contrib/llvm/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp

   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 lldb_private::ConstString
 211 SymbolFileDWARF::GetPluginNameStatic()
 212 {
 213     static ConstString g_name("dwarf");
 214     return g_name;
 215 }
 216
 217 const char *
 218 SymbolFileDWARF::GetPluginDescriptionStatic()
 219 {
 220     return "DWARF and DWARF3 debug symbol file reader.";
 221 }
 222
 223
 224 SymbolFile*
 225 SymbolFileDWARF::CreateInstance (ObjectFile* obj_file)
 226 {
 227     return new SymbolFileDWARF(obj_file);
 228 }
 229
 230 TypeList *
 231 SymbolFileDWARF::GetTypeList ()
 232 {
 233     if (GetDebugMapSymfile ())
 234         return m_debug_map_symfile->GetTypeList();
 235     return m_obj_file->GetModule()->GetTypeList();
 236
 237 }
 238 void
 239 SymbolFileDWARF::GetTypes (DWARFCompileUnit* cu,
 240                            const DWARFDebugInfoEntry *die,
 241                            dw_offset_t min_die_offset,
 242                            dw_offset_t max_die_offset,
 243                            uint32_t type_mask,
 244                            TypeSet &type_set)
 245 {
 246     if (cu)
 247     {
 248         if (die)
 249         {
 250             const dw_offset_t die_offset = die->GetOffset();
 251
 252             if (die_offset >= max_die_offset)
 253                 return;
 254
 255             if (die_offset >= min_die_offset)
 256             {
 257                 const dw_tag_t tag = die->Tag();
 258
 259                 bool add_type = false;
 260
 261                 switch (tag)
 262                 {
 263                     case DW_TAG_array_type:         add_type = (type_mask & eTypeClassArray         ) != 0; break;
 264                     case DW_TAG_unspecified_type:
 265                     case DW_TAG_base_type:          add_type = (type_mask & eTypeClassBuiltin       ) != 0; break;
 266                     case DW_TAG_class_type:         add_type = (type_mask & eTypeClassClass         ) != 0; break;
 267                     case DW_TAG_structure_type:     add_type = (type_mask & eTypeClassStruct        ) != 0; break;
 268                     case DW_TAG_union_type:         add_type = (type_mask & eTypeClassUnion         ) != 0; break;
 269                     case DW_TAG_enumeration_type:   add_type = (type_mask & eTypeClassEnumeration   ) != 0; break;
 270                     case DW_TAG_subroutine_type:
 271                     case DW_TAG_subprogram:
 272                     case DW_TAG_inlined_subroutine: add_type = (type_mask & eTypeClassFunction      ) != 0; break;
 273                     case DW_TAG_pointer_type:       add_type = (type_mask & eTypeClassPointer       ) != 0; break;
 274                     case DW_TAG_rvalue_reference_type:
 275                     case DW_TAG_reference_type:     add_type = (type_mask & eTypeClassReference     ) != 0; break;
 276                     case DW_TAG_typedef:            add_type = (type_mask & eTypeClassTypedef       ) != 0; break;
 277                     case DW_TAG_ptr_to_member_type: add_type = (type_mask & eTypeClassMemberPointer ) != 0; break;
 278                 }
 279
 280                 if (add_type)
 281                 {
 282                     const bool assert_not_being_parsed = true;
 283                     Type *type = ResolveTypeUID (cu, die, assert_not_being_parsed);
 284                     if (type)
 285                     {
 286                         if (type_set.find(type) == type_set.end())
 287                             type_set.insert(type);
 288                     }
 289                 }
 290             }
 291
 292             for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild();
 293                  child_die != NULL;
 294                  child_die = child_die->GetSibling())
 295             {
 296                 GetTypes (cu, child_die, min_die_offset, max_die_offset, type_mask, type_set);
 297             }
 298         }
 299     }
 300 }
 301
 302 size_t
 303 SymbolFileDWARF::GetTypes (SymbolContextScope *sc_scope,
 304                            uint32_t type_mask,
 305                            TypeList &type_list)
 306
 307 {
 308     TypeSet type_set;
 309
 310     CompileUnit *comp_unit = NULL;
 311     DWARFCompileUnit* dwarf_cu = NULL;
 312     if (sc_scope)
 313         comp_unit = sc_scope->CalculateSymbolContextCompileUnit();
 314
 315     if (comp_unit)
 316     {
 317         dwarf_cu = GetDWARFCompileUnit(comp_unit);
 318         if (dwarf_cu == 0)
 319             return 0;
 320         GetTypes (dwarf_cu,
 321                   dwarf_cu->DIE(),
 322                   dwarf_cu->GetOffset(),
 323                   dwarf_cu->GetNextCompileUnitOffset(),
 324                   type_mask,
 325                   type_set);
 326     }
 327     else
 328     {
 329         DWARFDebugInfo* info = DebugInfo();
 330         if (info)
 331         {
 332             const size_t num_cus = info->GetNumCompileUnits();
 333             for (size_t cu_idx=0; cu_idx<num_cus; ++cu_idx)
 334             {
 335                 dwarf_cu = info->GetCompileUnitAtIndex(cu_idx);
 336                 if (dwarf_cu)
 337                 {
 338                     GetTypes (dwarf_cu,
 339                               dwarf_cu->DIE(),
 340                               0,
 341                               UINT32_MAX,
 342                               type_mask,
 343                               type_set);
 344                 }
 345             }
 346         }
 347     }
 348 //    if (m_using_apple_tables)
 349 //    {
 350 //        DWARFMappedHash::MemoryTable *apple_types = m_apple_types_ap.get();
 351 //        if (apple_types)
 352 //        {
 353 //            apple_types->ForEach([this, &type_set, apple_types, type_mask](const DWARFMappedHash::DIEInfoArray &die_info_array) -> bool {
 354 //
 355 //                for (auto die_info: die_info_array)
 356 //                {
 357 //                    bool add_type = TagMatchesTypeMask (type_mask, 0);
 358 //                    if (!add_type)
 359 //                    {
 360 //                        dw_tag_t tag = die_info.tag;
 361 //                        if (tag == 0)
 362 //                        {
 363 //                            const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtr(die_info.offset, NULL);
 364 //                            tag = die->Tag();
 365 //                        }
 366 //                        add_type = TagMatchesTypeMask (type_mask, tag);
 367 //                    }
 368 //                    if (add_type)
 369 //                    {
 370 //                        Type *type = ResolveTypeUID(die_info.offset);
 371 //
 372 //                        if (type_set.find(type) == type_set.end())
 373 //                            type_set.insert(type);
 374 //                    }
 375 //                }
 376 //                return true; // Keep iterating
 377 //            });
 378 //        }
 379 //    }
 380 //    else
 381 //    {
 382 //        if (!m_indexed)
 383 //            Index ();
 384 //
 385 //        m_type_index.ForEach([this, &type_set, type_mask](const char *name, uint32_t die_offset) -> bool {
 386 //
 387 //            bool add_type = TagMatchesTypeMask (type_mask, 0);
 388 //
 389 //            if (!add_type)
 390 //            {
 391 //                const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtr(die_offset, NULL);
 392 //                if (die)
 393 //                {
 394 //                    const dw_tag_t tag = die->Tag();
 395 //                    add_type = TagMatchesTypeMask (type_mask, tag);
 396 //                }
 397 //            }
 398 //
 399 //            if (add_type)
 400 //            {
 401 //                Type *type = ResolveTypeUID(die_offset);
 402 //
 403 //                if (type_set.find(type) == type_set.end())
 404 //                    type_set.insert(type);
 405 //            }
 406 //            return true; // Keep iterating
 407 //        });
 408 //    }
 409
 410     std::set<ClangASTType> clang_type_set;
 411     size_t num_types_added = 0;
 412     for (Type *type : type_set)
 413     {
 414         ClangASTType clang_type = type->GetClangForwardType();
 415         if (clang_type_set.find(clang_type) == clang_type_set.end())
 416         {
 417             clang_type_set.insert(clang_type);
 418             type_list.Insert (type->shared_from_this());
 419             ++num_types_added;
 420         }
 421     }
 422     return num_types_added;
 423 }
 424
 425
 426 //----------------------------------------------------------------------
 427 // Gets the first parent that is a lexical block, function or inlined
 428 // subroutine, or compile unit.
 429 //----------------------------------------------------------------------
 430 static const DWARFDebugInfoEntry *
 431 GetParentSymbolContextDIE(const DWARFDebugInfoEntry *child_die)
 432 {
 433     const DWARFDebugInfoEntry *die;
 434     for (die = child_die->GetParent(); die != NULL; die = die->GetParent())
 435     {
 436         dw_tag_t tag = die->Tag();
 437
 438         switch (tag)
 439         {
 440         case DW_TAG_compile_unit:
 441         case DW_TAG_subprogram:
 442         case DW_TAG_inlined_subroutine:
 443         case DW_TAG_lexical_block:
 444             return die;
 445         }
 446     }
 447     return NULL;
 448 }
 449
 450
 451 SymbolFileDWARF::SymbolFileDWARF(ObjectFile* objfile) :
 452     SymbolFile (objfile),
 453     UserID (0),  // Used by SymbolFileDWARFDebugMap to when this class parses .o files to contain the .o file index/ID
 454     m_debug_map_module_wp (),
 455     m_debug_map_symfile (NULL),
 456     m_clang_tu_decl (NULL),
 457     m_flags(),
 458     m_data_debug_abbrev (),
 459     m_data_debug_aranges (),
 460     m_data_debug_frame (),
 461     m_data_debug_info (),
 462     m_data_debug_line (),
 463     m_data_debug_loc (),
 464     m_data_debug_ranges (),
 465     m_data_debug_str (),
 466     m_data_apple_names (),
 467     m_data_apple_types (),
 468     m_data_apple_namespaces (),
 469     m_abbr(),
 470     m_info(),
 471     m_line(),
 472     m_apple_names_ap (),
 473     m_apple_types_ap (),
 474     m_apple_namespaces_ap (),
 475     m_apple_objc_ap (),
 476     m_function_basename_index(),
 477     m_function_fullname_index(),
 478     m_function_method_index(),
 479     m_function_selector_index(),
 480     m_objc_class_selectors_index(),
 481     m_global_index(),
 482     m_type_index(),
 483     m_namespace_index(),
 484     m_indexed (false),
 485     m_is_external_ast_source (false),
 486     m_using_apple_tables (false),
 487     m_supports_DW_AT_APPLE_objc_complete_type (eLazyBoolCalculate),
 488     m_ranges(),
 489     m_unique_ast_type_map ()
 490 {
 491 }
 492
 493 SymbolFileDWARF::~SymbolFileDWARF()
 494 {
 495     if (m_is_external_ast_source)
 496     {
 497         ModuleSP module_sp (m_obj_file->GetModule());
 498         if (module_sp)
 499             module_sp->GetClangASTContext().RemoveExternalSource ();
 500     }
 501 }
 502
 503 static const ConstString &
 504 GetDWARFMachOSegmentName ()
 505 {
 506     static ConstString g_dwarf_section_name ("__DWARF");
 507     return g_dwarf_section_name;
 508 }
 509
 510 UniqueDWARFASTTypeMap &
 511 SymbolFileDWARF::GetUniqueDWARFASTTypeMap ()
 512 {
 513     if (GetDebugMapSymfile ())
 514         return m_debug_map_symfile->GetUniqueDWARFASTTypeMap ();
 515     return m_unique_ast_type_map;
 516 }
 517
 518 ClangASTContext &
 519 SymbolFileDWARF::GetClangASTContext ()
 520 {
 521     if (GetDebugMapSymfile ())
 522         return m_debug_map_symfile->GetClangASTContext ();
 523
 524     ClangASTContext &ast = m_obj_file->GetModule()->GetClangASTContext();
 525     if (!m_is_external_ast_source)
 526     {
 527         m_is_external_ast_source = true;
 528         llvm::OwningPtr<clang::ExternalASTSource> ast_source_ap (
 529             new ClangExternalASTSourceCallbacks (SymbolFileDWARF::CompleteTagDecl,
 530                                                  SymbolFileDWARF::CompleteObjCInterfaceDecl,
 531                                                  SymbolFileDWARF::FindExternalVisibleDeclsByName,
 532                                                  SymbolFileDWARF::LayoutRecordType,
 533                                                  this));
 534         ast.SetExternalSource (ast_source_ap);
 535     }
 536     return ast;
 537 }
 538
 539 void
 540 SymbolFileDWARF::InitializeObject()
 541 {
 542     // Install our external AST source callbacks so we can complete Clang types.
 543     ModuleSP module_sp (m_obj_file->GetModule());
 544     if (module_sp)
 545     {
 546         const SectionList *section_list = module_sp->GetSectionList();
 547
 548         const Section* section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get();
 549
 550         // Memory map the DWARF mach-o segment so we have everything mmap'ed
 551         // to keep our heap memory usage down.
 552         if (section)
 553             m_obj_file->MemoryMapSectionData(section, m_dwarf_data);
 554     }
 555     get_apple_names_data();
 556     if (m_data_apple_names.GetByteSize() > 0)
 557     {
 558         m_apple_names_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_names, get_debug_str_data(), ".apple_names"));
 559         if (m_apple_names_ap->IsValid())
 560             m_using_apple_tables = true;
 561         else
 562             m_apple_names_ap.reset();
 563     }
 564     get_apple_types_data();
 565     if (m_data_apple_types.GetByteSize() > 0)
 566     {
 567         m_apple_types_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_types, get_debug_str_data(), ".apple_types"));
 568         if (m_apple_types_ap->IsValid())
 569             m_using_apple_tables = true;
 570         else
 571             m_apple_types_ap.reset();
 572     }
 573
 574     get_apple_namespaces_data();
 575     if (m_data_apple_namespaces.GetByteSize() > 0)
 576     {
 577         m_apple_namespaces_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_namespaces, get_debug_str_data(), ".apple_namespaces"));
 578         if (m_apple_namespaces_ap->IsValid())
 579             m_using_apple_tables = true;
 580         else
 581             m_apple_namespaces_ap.reset();
 582     }
 583
 584     get_apple_objc_data();
 585     if (m_data_apple_objc.GetByteSize() > 0)
 586     {
 587         m_apple_objc_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_objc, get_debug_str_data(), ".apple_objc"));
 588         if (m_apple_objc_ap->IsValid())
 589             m_using_apple_tables = true;
 590         else
 591             m_apple_objc_ap.reset();
 592     }
 593 }
 594
 595 bool
 596 SymbolFileDWARF::SupportedVersion(uint16_t version)
 597 {
 598     return version == 2 || version == 3 || version == 4;
 599 }
 600
 601 uint32_t
 602 SymbolFileDWARF::CalculateAbilities ()
 603 {
 604     uint32_t abilities = 0;
 605     if (m_obj_file != NULL)
 606     {
 607         const Section* section = NULL;
 608         const SectionList *section_list = m_obj_file->GetSectionList();
 609         if (section_list == NULL)
 610             return 0;
 611
 612         uint64_t debug_abbrev_file_size = 0;
 613         uint64_t debug_info_file_size = 0;
 614         uint64_t debug_line_file_size = 0;
 615
 616         section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get();
 617
 618         if (section)
 619             section_list = &section->GetChildren ();
 620
 621         section = section_list->FindSectionByType (eSectionTypeDWARFDebugInfo, true).get();
 622         if (section != NULL)
 623         {
 624             debug_info_file_size = section->GetFileSize();
 625
 626             section = section_list->FindSectionByType (eSectionTypeDWARFDebugAbbrev, true).get();
 627             if (section)
 628                 debug_abbrev_file_size = section->GetFileSize();
 629             else
 630                 m_flags.Set (flagsGotDebugAbbrevData);
 631
 632             section = section_list->FindSectionByType (eSectionTypeDWARFDebugAranges, true).get();
 633             if (!section)
 634                 m_flags.Set (flagsGotDebugArangesData);
 635
 636             section = section_list->FindSectionByType (eSectionTypeDWARFDebugFrame, true).get();
 637             if (!section)
 638                 m_flags.Set (flagsGotDebugFrameData);
 639
 640             section = section_list->FindSectionByType (eSectionTypeDWARFDebugLine, true).get();
 641             if (section)
 642                 debug_line_file_size = section->GetFileSize();
 643             else
 644                 m_flags.Set (flagsGotDebugLineData);
 645
 646             section = section_list->FindSectionByType (eSectionTypeDWARFDebugLoc, true).get();
 647             if (!section)
 648                 m_flags.Set (flagsGotDebugLocData);
 649
 650             section = section_list->FindSectionByType (eSectionTypeDWARFDebugMacInfo, true).get();
 651             if (!section)
 652                 m_flags.Set (flagsGotDebugMacInfoData);
 653
 654             section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubNames, true).get();
 655             if (!section)
 656                 m_flags.Set (flagsGotDebugPubNamesData);
 657
 658             section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubTypes, true).get();
 659             if (!section)
 660                 m_flags.Set (flagsGotDebugPubTypesData);
 661
 662             section = section_list->FindSectionByType (eSectionTypeDWARFDebugRanges, true).get();
 663             if (!section)
 664                 m_flags.Set (flagsGotDebugRangesData);
 665
 666             section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get();
 667             if (!section)
 668                 m_flags.Set (flagsGotDebugStrData);
 669         }
 670         else
 671         {
 672             const char *symfile_dir_cstr = m_obj_file->GetFileSpec().GetDirectory().GetCString();
 673             if (symfile_dir_cstr)
 674             {
 675                 if (strcasestr(symfile_dir_cstr, ".dsym"))
 676                 {
 677                     if (m_obj_file->GetType() == ObjectFile::eTypeDebugInfo)
 678                     {
 679                         // We have a dSYM file that didn't have a any debug info.
 680                         // If the string table has a size of 1, then it was made from
 681                         // an executable with no debug info, or from an executable that
 682                         // was stripped.
 683                         section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get();
 684                         if (section && section->GetFileSize() == 1)
 685                         {
 686                             m_obj_file->GetModule()->ReportWarning ("empty dSYM file detected, dSYM was created with an executable with no debug info.");
 687                         }
 688                     }
 689                 }
 690             }
 691         }
 692
 693         if (debug_abbrev_file_size > 0 && debug_info_file_size > 0)
 694             abilities |= CompileUnits | Functions | Blocks | GlobalVariables | LocalVariables | VariableTypes;
 695
 696         if (debug_line_file_size > 0)
 697             abilities |= LineTables;
 698     }
 699     return abilities;
 700 }
 701
 702 const DataExtractor&
 703 SymbolFileDWARF::GetCachedSectionData (uint32_t got_flag, SectionType sect_type, DataExtractor &data)
 704 {
 705     if (m_flags.IsClear (got_flag))
 706     {
 707         ModuleSP module_sp (m_obj_file->GetModule());
 708         m_flags.Set (got_flag);
 709         const SectionList *section_list = module_sp->GetSectionList();
 710         if (section_list)
 711         {
 712             SectionSP section_sp (section_list->FindSectionByType(sect_type, true));
 713             if (section_sp)
 714             {
 715                 // See if we memory mapped the DWARF segment?
 716                 if (m_dwarf_data.GetByteSize())
 717                 {
 718                     data.SetData(m_dwarf_data, section_sp->GetOffset (), section_sp->GetFileSize());
 719                 }
 720                 else
 721                 {
 722                     if (m_obj_file->ReadSectionData (section_sp.get(), data) == 0)
 723                         data.Clear();
 724                 }
 725             }
 726         }
 727     }
 728     return data;
 729 }
 730
 731 const DataExtractor&
 732 SymbolFileDWARF::get_debug_abbrev_data()
 733 {
 734     return GetCachedSectionData (flagsGotDebugAbbrevData, eSectionTypeDWARFDebugAbbrev, m_data_debug_abbrev);
 735 }
 736
 737 const DataExtractor&
 738 SymbolFileDWARF::get_debug_aranges_data()
 739 {
 740     return GetCachedSectionData (flagsGotDebugArangesData, eSectionTypeDWARFDebugAranges, m_data_debug_aranges);
 741 }
 742
 743 const DataExtractor&
 744 SymbolFileDWARF::get_debug_frame_data()
 745 {
 746     return GetCachedSectionData (flagsGotDebugFrameData, eSectionTypeDWARFDebugFrame, m_data_debug_frame);
 747 }
 748
 749 const DataExtractor&
 750 SymbolFileDWARF::get_debug_info_data()
 751 {
 752     return GetCachedSectionData (flagsGotDebugInfoData, eSectionTypeDWARFDebugInfo, m_data_debug_info);
 753 }
 754
 755 const DataExtractor&
 756 SymbolFileDWARF::get_debug_line_data()
 757 {
 758     return GetCachedSectionData (flagsGotDebugLineData, eSectionTypeDWARFDebugLine, m_data_debug_line);
 759 }
 760
 761 const DataExtractor&
 762 SymbolFileDWARF::get_debug_loc_data()
 763 {
 764     return GetCachedSectionData (flagsGotDebugLocData, eSectionTypeDWARFDebugLoc, m_data_debug_loc);
 765 }
 766
 767 const DataExtractor&
 768 SymbolFileDWARF::get_debug_ranges_data()
 769 {
 770     return GetCachedSectionData (flagsGotDebugRangesData, eSectionTypeDWARFDebugRanges, m_data_debug_ranges);
 771 }
 772
 773 const DataExtractor&
 774 SymbolFileDWARF::get_debug_str_data()
 775 {
 776     return GetCachedSectionData (flagsGotDebugStrData, eSectionTypeDWARFDebugStr, m_data_debug_str);
 777 }
 778
 779 const DataExtractor&
 780 SymbolFileDWARF::get_apple_names_data()
 781 {
 782     return GetCachedSectionData (flagsGotAppleNamesData, eSectionTypeDWARFAppleNames, m_data_apple_names);
 783 }
 784
 785 const DataExtractor&
 786 SymbolFileDWARF::get_apple_types_data()
 787 {
 788     return GetCachedSectionData (flagsGotAppleTypesData, eSectionTypeDWARFAppleTypes, m_data_apple_types);
 789 }
 790
 791 const DataExtractor&
 792 SymbolFileDWARF::get_apple_namespaces_data()
 793 {
 794     return GetCachedSectionData (flagsGotAppleNamespacesData, eSectionTypeDWARFAppleNamespaces, m_data_apple_namespaces);
 795 }
 796
 797 const DataExtractor&
 798 SymbolFileDWARF::get_apple_objc_data()
 799 {
 800     return GetCachedSectionData (flagsGotAppleObjCData, eSectionTypeDWARFAppleObjC, m_data_apple_objc);
 801 }
 802
 803
 804 DWARFDebugAbbrev*
 805 SymbolFileDWARF::DebugAbbrev()
 806 {
 807     if (m_abbr.get() == NULL)
 808     {
 809         const DataExtractor &debug_abbrev_data = get_debug_abbrev_data();
 810         if (debug_abbrev_data.GetByteSize() > 0)
 811         {
 812             m_abbr.reset(new DWARFDebugAbbrev());
 813             if (m_abbr.get())
 814                 m_abbr->Parse(debug_abbrev_data);
 815         }
 816     }
 817     return m_abbr.get();
 818 }
 819
 820 const DWARFDebugAbbrev*
 821 SymbolFileDWARF::DebugAbbrev() const
 822 {
 823     return m_abbr.get();
 824 }
 825
 826
 827 DWARFDebugInfo*
 828 SymbolFileDWARF::DebugInfo()
 829 {
 830     if (m_info.get() == NULL)
 831     {
 832         Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this);
 833         if (get_debug_info_data().GetByteSize() > 0)
 834         {
 835             m_info.reset(new DWARFDebugInfo());
 836             if (m_info.get())
 837             {
 838                 m_info->SetDwarfData(this);
 839             }
 840         }
 841     }
 842     return m_info.get();
 843 }
 844
 845 const DWARFDebugInfo*
 846 SymbolFileDWARF::DebugInfo() const
 847 {
 848     return m_info.get();
 849 }
 850
 851 DWARFCompileUnit*
 852 SymbolFileDWARF::GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit)
 853 {
 854     DWARFDebugInfo* info = DebugInfo();
 855     if (info)
 856     {
 857         if (GetDebugMapSymfile ())
 858         {
 859             // The debug map symbol file made the compile units for this DWARF
 860             // file which is .o file with DWARF in it, and we should have
 861             // only 1 compile unit which is at offset zero in the DWARF.
 862             // TODO: modify to support LTO .o files where each .o file might
 863             // have multiple DW_TAG_compile_unit tags.
 864             return info->GetCompileUnit(0).get();
 865         }
 866         else
 867         {
 868             // Just a normal DWARF file whose user ID for the compile unit is
 869             // the DWARF offset itself
 870             return info->GetCompileUnit((dw_offset_t)comp_unit->GetID()).get();
 871         }
 872     }
 873     return NULL;
 874 }
 875
 876
 877 DWARFDebugRanges*
 878 SymbolFileDWARF::DebugRanges()
 879 {
 880     if (m_ranges.get() == NULL)
 881     {
 882         Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this);
 883         if (get_debug_ranges_data().GetByteSize() > 0)
 884         {
 885             m_ranges.reset(new DWARFDebugRanges());
 886             if (m_ranges.get())
 887                 m_ranges->Extract(this);
 888         }
 889     }
 890     return m_ranges.get();
 891 }
 892
 893 const DWARFDebugRanges*
 894 SymbolFileDWARF::DebugRanges() const
 895 {
 896     return m_ranges.get();
 897 }
 898
 899 lldb::CompUnitSP
 900 SymbolFileDWARF::ParseCompileUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx)
 901 {
 902     CompUnitSP cu_sp;
 903     if (dwarf_cu)
 904     {
 905         CompileUnit *comp_unit = (CompileUnit*)dwarf_cu->GetUserData();
 906         if (comp_unit)
 907         {
 908             // We already parsed this compile unit, had out a shared pointer to it
 909             cu_sp = comp_unit->shared_from_this();
 910         }
 911         else
 912         {
 913             if (GetDebugMapSymfile ())
 914             {
 915                 // Let the debug map create the compile unit
 916                 cu_sp = m_debug_map_symfile->GetCompileUnit(this);
 917                 dwarf_cu->SetUserData(cu_sp.get());
 918             }
 919             else
 920             {
 921                 ModuleSP module_sp (m_obj_file->GetModule());
 922                 if (module_sp)
 923                 {
 924                     const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly ();
 925                     if (cu_die)
 926                     {
 927                         const char * cu_die_name = cu_die->GetName(this, dwarf_cu);
 928                         const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL);
 929                         LanguageType cu_language = (LanguageType)cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0);
 930                         if (cu_die_name)
 931                         {
 932                             std::string ramapped_file;
 933                             FileSpec cu_file_spec;
 934
 935                             if (cu_die_name[0] == '/' || cu_comp_dir == NULL || cu_comp_dir[0] == '\0')
 936                             {
 937                                 // If we have a full path to the compile unit, we don't need to resolve
 938                                 // the file.  This can be expensive e.g. when the source files are NFS mounted.
 939                                 if (module_sp->RemapSourceFile(cu_die_name, ramapped_file))
 940                                     cu_file_spec.SetFile (ramapped_file.c_str(), false);
 941                                 else
 942                                     cu_file_spec.SetFile (cu_die_name, false);
 943                             }
 944                             else
 945                             {
 946                                 std::string fullpath(cu_comp_dir);
 947                                 if (*fullpath.rbegin() != '/')
 948                                     fullpath += '/';
 949                                 fullpath += cu_die_name;
 950                                 if (module_sp->RemapSourceFile (fullpath.c_str(), ramapped_file))
 951                                     cu_file_spec.SetFile (ramapped_file.c_str(), false);
 952                                 else
 953                                     cu_file_spec.SetFile (fullpath.c_str(), false);
 954                             }
 955
 956                             cu_sp.reset(new CompileUnit (module_sp,
 957                                                          dwarf_cu,
 958                                                          cu_file_spec,
 959                                                          MakeUserID(dwarf_cu->GetOffset()),
 960                                                          cu_language));
 961                             if (cu_sp)
 962                             {
 963                                 dwarf_cu->SetUserData(cu_sp.get());
 964
 965                                 // Figure out the compile unit index if we weren't given one
 966                                 if (cu_idx == UINT32_MAX)
 967                                     DebugInfo()->GetCompileUnit(dwarf_cu->GetOffset(), &cu_idx);
 968
 969                                 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp);
 970                             }
 971                         }
 972                     }
 973                 }
 974             }
 975         }
 976     }
 977     return cu_sp;
 978 }
 979
 980 uint32_t
 981 SymbolFileDWARF::GetNumCompileUnits()
 982 {
 983     DWARFDebugInfo* info = DebugInfo();
 984     if (info)
 985         return info->GetNumCompileUnits();
 986     return 0;
 987 }
 988
 989 CompUnitSP
 990 SymbolFileDWARF::ParseCompileUnitAtIndex(uint32_t cu_idx)
 991 {
 992     CompUnitSP cu_sp;
 993     DWARFDebugInfo* info = DebugInfo();
 994     if (info)
 995     {
 996         DWARFCompileUnit* dwarf_cu = info->GetCompileUnitAtIndex(cu_idx);
 997         if (dwarf_cu)
 998             cu_sp = ParseCompileUnit(dwarf_cu, cu_idx);
 999     }
1000     return cu_sp;
1001 }
1002
1003 static void
1004 AddRangesToBlock (Block& block,
1005                   DWARFDebugRanges::RangeList& ranges,
1006                   addr_t block_base_addr)
1007 {
1008     const size_t num_ranges = ranges.GetSize();
1009     for (size_t i = 0; i<num_ranges; ++i)
1010     {
1011         const DWARFDebugRanges::Range &range = ranges.GetEntryRef (i);
1012         const addr_t range_base = range.GetRangeBase();
1013         assert (range_base >= block_base_addr);
1014         block.AddRange(Block::Range (range_base - block_base_addr, range.GetByteSize()));;
1015     }
1016     block.FinalizeRanges ();
1017 }
1018
1019
1020 Function *
1021 SymbolFileDWARF::ParseCompileUnitFunction (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die)
1022 {
1023     DWARFDebugRanges::RangeList func_ranges;
1024     const char *name = NULL;
1025     const char *mangled = NULL;
1026     int decl_file = 0;
1027     int decl_line = 0;
1028     int decl_column = 0;
1029     int call_file = 0;
1030     int call_line = 0;
1031     int call_column = 0;
1032     DWARFExpression frame_base;
1033
1034     assert (die->Tag() == DW_TAG_subprogram);
1035
1036     if (die->Tag() != DW_TAG_subprogram)
1037         return NULL;
1038
1039     if (die->GetDIENamesAndRanges (this,
1040                                    dwarf_cu,
1041                                    name,
1042                                    mangled,
1043                                    func_ranges,
1044                                    decl_file,
1045                                    decl_line,
1046                                    decl_column,
1047                                    call_file,
1048                                    call_line,
1049                                    call_column,
1050                                    &frame_base))
1051     {
1052         // Union of all ranges in the function DIE (if the function is discontiguous)
1053         AddressRange func_range;
1054         lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase (0);
1055         lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd (0);
1056         if (lowest_func_addr != LLDB_INVALID_ADDRESS && lowest_func_addr <= highest_func_addr)
1057         {
1058             ModuleSP module_sp (m_obj_file->GetModule());
1059             func_range.GetBaseAddress().ResolveAddressUsingFileSections (lowest_func_addr, module_sp->GetSectionList());
1060             if (func_range.GetBaseAddress().IsValid())
1061                 func_range.SetByteSize(highest_func_addr - lowest_func_addr);
1062         }
1063
1064         if (func_range.GetBaseAddress().IsValid())
1065         {
1066             Mangled func_name;
1067             if (mangled)
1068                 func_name.SetValue(ConstString(mangled), true);
1069             else if (name)
1070                 func_name.SetValue(ConstString(name), false);
1071
1072             FunctionSP func_sp;
1073             std::unique_ptr<Declaration> decl_ap;
1074             if (decl_file != 0 || decl_line != 0 || decl_column != 0)
1075                 decl_ap.reset(new Declaration (sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file),
1076                                                decl_line,
1077                                                decl_column));
1078
1079             // Supply the type _only_ if it has already been parsed
1080             Type *func_type = m_die_to_type.lookup (die);
1081
1082             assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED);
1083
1084             if (FixupAddress (func_range.GetBaseAddress()))
1085             {
1086                 const user_id_t func_user_id = MakeUserID(die->GetOffset());
1087                 func_sp.reset(new Function (sc.comp_unit,
1088                                             MakeUserID(func_user_id),       // UserID is the DIE offset
1089                                             MakeUserID(func_user_id),
1090                                             func_name,
1091                                             func_type,
1092                                             func_range));           // first address range
1093
1094                 if (func_sp.get() != NULL)
1095                 {
1096                     if (frame_base.IsValid())
1097                         func_sp->GetFrameBaseExpression() = frame_base;
1098                     sc.comp_unit->AddFunction(func_sp);
1099                     return func_sp.get();
1100                 }
1101             }
1102         }
1103     }
1104     return NULL;
1105 }
1106
1107 bool
1108 SymbolFileDWARF::FixupAddress (Address &addr)
1109 {
1110     SymbolFileDWARFDebugMap * debug_map_symfile = GetDebugMapSymfile ();
1111     if (debug_map_symfile)
1112     {
1113         return debug_map_symfile->LinkOSOAddress(addr);
1114     }
1115     // This is a normal DWARF file, no address fixups need to happen
1116     return true;
1117 }
1118 lldb::LanguageType
1119 SymbolFileDWARF::ParseCompileUnitLanguage (const SymbolContext& sc)
1120 {
1121     assert (sc.comp_unit);
1122     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1123     if (dwarf_cu)
1124     {
1125         const DWARFDebugInfoEntry *die = dwarf_cu->GetCompileUnitDIEOnly();
1126         if (die)
1127         {
1128             const uint32_t language = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0);
1129             if (language)
1130                 return (lldb::LanguageType)language;
1131         }
1132     }
1133     return eLanguageTypeUnknown;
1134 }
1135
1136 size_t
1137 SymbolFileDWARF::ParseCompileUnitFunctions(const SymbolContext &sc)
1138 {
1139     assert (sc.comp_unit);
1140     size_t functions_added = 0;
1141     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1142     if (dwarf_cu)
1143     {
1144         DWARFDIECollection function_dies;
1145         const size_t num_functions = dwarf_cu->AppendDIEsWithTag (DW_TAG_subprogram, function_dies);
1146         size_t func_idx;
1147         for (func_idx = 0; func_idx < num_functions; ++func_idx)
1148         {
1149             const DWARFDebugInfoEntry *die = function_dies.GetDIEPtrAtIndex(func_idx);
1150             if (sc.comp_unit->FindFunctionByUID (MakeUserID(die->GetOffset())).get() == NULL)
1151             {
1152                 if (ParseCompileUnitFunction(sc, dwarf_cu, die))
1153                     ++functions_added;
1154             }
1155         }
1156         //FixupTypes();
1157     }
1158     return functions_added;
1159 }
1160
1161 bool
1162 SymbolFileDWARF::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList& support_files)
1163 {
1164     assert (sc.comp_unit);
1165     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1166     if (dwarf_cu)
1167     {
1168         const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly();
1169
1170         if (cu_die)
1171         {
1172             const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL);
1173             dw_offset_t stmt_list = cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET);
1174
1175             // All file indexes in DWARF are one based and a file of index zero is
1176             // supposed to be the compile unit itself.
1177             support_files.Append (*sc.comp_unit);
1178
1179             return DWARFDebugLine::ParseSupportFiles(sc.comp_unit->GetModule(), get_debug_line_data(), cu_comp_dir, stmt_list, support_files);
1180         }
1181     }
1182     return false;
1183 }
1184
1185 struct ParseDWARFLineTableCallbackInfo
1186 {
1187     LineTable* line_table;
1188     std::unique_ptr<LineSequence> sequence_ap;
1189 };
1190
1191 //----------------------------------------------------------------------
1192 // ParseStatementTableCallback
1193 //----------------------------------------------------------------------
1194 static void
1195 ParseDWARFLineTableCallback(dw_offset_t offset, const DWARFDebugLine::State& state, void* userData)
1196 {
1197     if (state.row == DWARFDebugLine::State::StartParsingLineTable)
1198     {
1199         // Just started parsing the line table
1200     }
1201     else if (state.row == DWARFDebugLine::State::DoneParsingLineTable)
1202     {
1203         // Done parsing line table, nothing to do for the cleanup
1204     }
1205     else
1206     {
1207         ParseDWARFLineTableCallbackInfo* info = (ParseDWARFLineTableCallbackInfo*)userData;
1208         LineTable* line_table = info->line_table;
1209
1210         // If this is our first time here, we need to create a
1211         // sequence container.
1212         if (!info->sequence_ap.get())
1213         {
1214             info->sequence_ap.reset(line_table->CreateLineSequenceContainer());
1215             assert(info->sequence_ap.get());
1216         }
1217         line_table->AppendLineEntryToSequence (info->sequence_ap.get(),
1218                                                state.address,
1219                                                state.line,
1220                                                state.column,
1221                                                state.file,
1222                                                state.is_stmt,
1223                                                state.basic_block,
1224                                                state.prologue_end,
1225                                                state.epilogue_begin,
1226                                                state.end_sequence);
1227         if (state.end_sequence)
1228         {
1229             // First, put the current sequence into the line table.
1230             line_table->InsertSequence(info->sequence_ap.get());
1231             // Then, empty it to prepare for the next sequence.
1232             info->sequence_ap->Clear();
1233         }
1234     }
1235 }
1236
1237 bool
1238 SymbolFileDWARF::ParseCompileUnitLineTable (const SymbolContext &sc)
1239 {
1240     assert (sc.comp_unit);
1241     if (sc.comp_unit->GetLineTable() != NULL)
1242         return true;
1243
1244     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1245     if (dwarf_cu)
1246     {
1247         const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->GetCompileUnitDIEOnly();
1248         if (dwarf_cu_die)
1249         {
1250             const dw_offset_t cu_line_offset = dwarf_cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET);
1251             if (cu_line_offset != DW_INVALID_OFFSET)
1252             {
1253                 std::unique_ptr<LineTable> line_table_ap(new LineTable(sc.comp_unit));
1254                 if (line_table_ap.get())
1255                 {
1256                     ParseDWARFLineTableCallbackInfo info;
1257                     info.line_table = line_table_ap.get();
1258                     lldb::offset_t offset = cu_line_offset;
1259                     DWARFDebugLine::ParseStatementTable(get_debug_line_data(), &offset, ParseDWARFLineTableCallback, &info);
1260                     if (m_debug_map_symfile)
1261                     {
1262                         // We have an object file that has a line table with addresses
1263                         // that are not linked. We need to link the line table and convert
1264                         // the addresses that are relative to the .o file into addresses
1265                         // for the main executable.
1266                         sc.comp_unit->SetLineTable (m_debug_map_symfile->LinkOSOLineTable (this, line_table_ap.get()));
1267                     }
1268                     else
1269                     {
1270                         sc.comp_unit->SetLineTable(line_table_ap.release());
1271                         return true;
1272                     }
1273                 }
1274             }
1275         }
1276     }
1277     return false;
1278 }
1279
1280 size_t
1281 SymbolFileDWARF::ParseFunctionBlocks
1282 (
1283     const SymbolContext& sc,
1284     Block *parent_block,
1285     DWARFCompileUnit* dwarf_cu,
1286     const DWARFDebugInfoEntry *die,
1287     addr_t subprogram_low_pc,
1288     uint32_t depth
1289 )
1290 {
1291     size_t blocks_added = 0;
1292     while (die != NULL)
1293     {
1294         dw_tag_t tag = die->Tag();
1295
1296         switch (tag)
1297         {
1298         case DW_TAG_inlined_subroutine:
1299         case DW_TAG_subprogram:
1300         case DW_TAG_lexical_block:
1301             {
1302                 Block *block = NULL;
1303                 if (tag == DW_TAG_subprogram)
1304                 {
1305                     // Skip any DW_TAG_subprogram DIEs that are inside
1306                     // of a normal or inlined functions. These will be
1307                     // parsed on their own as separate entities.
1308
1309                     if (depth > 0)
1310                         break;
1311
1312                     block = parent_block;
1313                 }
1314                 else
1315                 {
1316                     BlockSP block_sp(new Block (MakeUserID(die->GetOffset())));
1317                     parent_block->AddChild(block_sp);
1318                     block = block_sp.get();
1319                 }
1320                 DWARFDebugRanges::RangeList ranges;
1321                 const char *name = NULL;
1322                 const char *mangled_name = NULL;
1323
1324                 int decl_file = 0;
1325                 int decl_line = 0;
1326                 int decl_column = 0;
1327                 int call_file = 0;
1328                 int call_line = 0;
1329                 int call_column = 0;
1330                 if (die->GetDIENamesAndRanges (this,
1331                                                dwarf_cu,
1332                                                name,
1333                                                mangled_name,
1334                                                ranges,
1335                                                decl_file, decl_line, decl_column,
1336                                                call_file, call_line, call_column))
1337                 {
1338                     if (tag == DW_TAG_subprogram)
1339                     {
1340                         assert (subprogram_low_pc == LLDB_INVALID_ADDRESS);
1341                         subprogram_low_pc = ranges.GetMinRangeBase(0);
1342                     }
1343                     else if (tag == DW_TAG_inlined_subroutine)
1344                     {
1345                         // We get called here for inlined subroutines in two ways.
1346                         // The first time is when we are making the Function object
1347                         // for this inlined concrete instance.  Since we're creating a top level block at
1348                         // here, the subprogram_low_pc will be LLDB_INVALID_ADDRESS.  So we need to
1349                         // adjust the containing address.
1350                         // The second time is when we are parsing the blocks inside the function that contains
1351                         // the inlined concrete instance.  Since these will be blocks inside the containing "real"
1352                         // function the offset will be for that function.
1353                         if (subprogram_low_pc == LLDB_INVALID_ADDRESS)
1354                         {
1355                             subprogram_low_pc = ranges.GetMinRangeBase(0);
1356                         }
1357                     }
1358
1359                     AddRangesToBlock (*block, ranges, subprogram_low_pc);
1360
1361                     if (tag != DW_TAG_subprogram && (name != NULL || mangled_name != NULL))
1362                     {
1363                         std::unique_ptr<Declaration> decl_ap;
1364                         if (decl_file != 0 || decl_line != 0 || decl_column != 0)
1365                             decl_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file),
1366                                                           decl_line, decl_column));
1367
1368                         std::unique_ptr<Declaration> call_ap;
1369                         if (call_file != 0 || call_line != 0 || call_column != 0)
1370                             call_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(call_file),
1371                                                           call_line, call_column));
1372
1373                         block->SetInlinedFunctionInfo (name, mangled_name, decl_ap.get(), call_ap.get());
1374                     }
1375
1376                     ++blocks_added;
1377
1378                     if (die->HasChildren())
1379                     {
1380                         blocks_added += ParseFunctionBlocks (sc,
1381                                                              block,
1382                                                              dwarf_cu,
1383                                                              die->GetFirstChild(),
1384                                                              subprogram_low_pc,
1385                                                              depth + 1);
1386                     }
1387                 }
1388             }
1389             break;
1390         default:
1391             break;
1392         }
1393
1394         // Only parse siblings of the block if we are not at depth zero. A depth
1395         // of zero indicates we are currently parsing the top level
1396         // DW_TAG_subprogram DIE
1397
1398         if (depth == 0)
1399             die = NULL;
1400         else
1401             die = die->GetSibling();
1402     }
1403     return blocks_added;
1404 }
1405
1406 bool
1407 SymbolFileDWARF::ParseTemplateDIE (DWARFCompileUnit* dwarf_cu,
1408                                    const DWARFDebugInfoEntry *die,
1409                                    ClangASTContext::TemplateParameterInfos &template_param_infos)
1410 {
1411     const dw_tag_t tag = die->Tag();
1412
1413     switch (tag)
1414     {
1415     case DW_TAG_template_type_parameter:
1416     case DW_TAG_template_value_parameter:
1417         {
1418             const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
1419
1420             DWARFDebugInfoEntry::Attributes attributes;
1421             const size_t num_attributes = die->GetAttributes (this,
1422                                                               dwarf_cu,
1423                                                               fixed_form_sizes,
1424                                                               attributes);
1425             const char *name = NULL;
1426             Type *lldb_type = NULL;
1427             ClangASTType clang_type;
1428             uint64_t uval64 = 0;
1429             bool uval64_valid = false;
1430             if (num_attributes > 0)
1431             {
1432                 DWARFFormValue form_value;
1433                 for (size_t i=0; i<num_attributes; ++i)
1434                 {
1435                     const dw_attr_t attr = attributes.AttributeAtIndex(i);
1436
1437                     switch (attr)
1438                     {
1439                         case DW_AT_name:
1440                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1441                                 name = form_value.AsCString(&get_debug_str_data());
1442                             break;
1443
1444                         case DW_AT_type:
1445                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1446                             {
1447                                 const dw_offset_t type_die_offset = form_value.Reference(dwarf_cu);
1448                                 lldb_type = ResolveTypeUID(type_die_offset);
1449                                 if (lldb_type)
1450                                     clang_type = lldb_type->GetClangForwardType();
1451                             }
1452                             break;
1453
1454                         case DW_AT_const_value:
1455                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1456                             {
1457                                 uval64_valid = true;
1458                                 uval64 = form_value.Unsigned();
1459                             }
1460                             break;
1461                         default:
1462                             break;
1463                     }
1464                 }
1465
1466                 clang::ASTContext *ast = GetClangASTContext().getASTContext();
1467                 if (!clang_type)
1468                     clang_type = GetClangASTContext().GetBasicType(eBasicTypeVoid);
1469
1470                 if (clang_type)
1471                 {
1472                     bool is_signed = false;
1473                     if (name && name[0])
1474                         template_param_infos.names.push_back(name);
1475                     else
1476                         template_param_infos.names.push_back(NULL);
1477
1478                     if (tag == DW_TAG_template_value_parameter &&
1479                         lldb_type != NULL &&
1480                         clang_type.IsIntegerType (is_signed) &&
1481                         uval64_valid)
1482                     {
1483                         llvm::APInt apint (lldb_type->GetByteSize() * 8, uval64, is_signed);
1484                         template_param_infos.args.push_back (clang::TemplateArgument (*ast,
1485                                                                                       llvm::APSInt(apint),
1486                                                                                       clang_type.GetQualType()));
1487                     }
1488                     else
1489                     {
1490                         template_param_infos.args.push_back (clang::TemplateArgument (clang_type.GetQualType()));
1491                     }
1492                 }
1493                 else
1494                 {
1495                     return false;
1496                 }
1497
1498             }
1499         }
1500         return true;
1501
1502     default:
1503         break;
1504     }
1505     return false;
1506 }
1507
1508 bool
1509 SymbolFileDWARF::ParseTemplateParameterInfos (DWARFCompileUnit* dwarf_cu,
1510                                               const DWARFDebugInfoEntry *parent_die,
1511                                               ClangASTContext::TemplateParameterInfos &template_param_infos)
1512 {
1513
1514     if (parent_die == NULL)
1515         return false;
1516
1517     Args template_parameter_names;
1518     for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild();
1519          die != NULL;
1520          die = die->GetSibling())
1521     {
1522         const dw_tag_t tag = die->Tag();
1523
1524         switch (tag)
1525         {
1526             case DW_TAG_template_type_parameter:
1527             case DW_TAG_template_value_parameter:
1528                 ParseTemplateDIE (dwarf_cu, die, template_param_infos);
1529             break;
1530
1531         default:
1532             break;
1533         }
1534     }
1535     if (template_param_infos.args.empty())
1536         return false;
1537     return template_param_infos.args.size() == template_param_infos.names.size();
1538 }
1539
1540 clang::ClassTemplateDecl *
1541 SymbolFileDWARF::ParseClassTemplateDecl (clang::DeclContext *decl_ctx,
1542                                          lldb::AccessType access_type,
1543                                          const char *parent_name,
1544                                          int tag_decl_kind,
1545                                          const ClangASTContext::TemplateParameterInfos &template_param_infos)
1546 {
1547     if (template_param_infos.IsValid())
1548     {
1549         std::string template_basename(parent_name);
1550         template_basename.erase (template_basename.find('<'));
1551         ClangASTContext &ast = GetClangASTContext();
1552
1553         return ast.CreateClassTemplateDecl (decl_ctx,
1554                                             access_type,
1555                                             template_basename.c_str(),
1556                                             tag_decl_kind,
1557                                             template_param_infos);
1558     }
1559     return NULL;
1560 }
1561
1562 class SymbolFileDWARF::DelayedAddObjCClassProperty
1563 {
1564 public:
1565     DelayedAddObjCClassProperty
1566     (
1567         const ClangASTType     &class_opaque_type,
1568         const char             *property_name,
1569         const ClangASTType     &property_opaque_type,  // The property type is only required if you don't have an ivar decl
1570         clang::ObjCIvarDecl    *ivar_decl,
1571         const char             *property_setter_name,
1572         const char             *property_getter_name,
1573         uint32_t                property_attributes,
1574         const ClangASTMetadata *metadata
1575     ) :
1576         m_class_opaque_type     (class_opaque_type),
1577         m_property_name         (property_name),
1578         m_property_opaque_type  (property_opaque_type),
1579         m_ivar_decl             (ivar_decl),
1580         m_property_setter_name  (property_setter_name),
1581         m_property_getter_name  (property_getter_name),
1582         m_property_attributes   (property_attributes)
1583     {
1584         if (metadata != NULL)
1585         {
1586             m_metadata_ap.reset(new ClangASTMetadata());
1587             *m_metadata_ap = *metadata;
1588         }
1589     }
1590
1591     DelayedAddObjCClassProperty (const DelayedAddObjCClassProperty &rhs)
1592     {
1593         *this = rhs;
1594     }
1595
1596     DelayedAddObjCClassProperty& operator= (const DelayedAddObjCClassProperty &rhs)
1597     {
1598         m_class_opaque_type    = rhs.m_class_opaque_type;
1599         m_property_name        = rhs.m_property_name;
1600         m_property_opaque_type = rhs.m_property_opaque_type;
1601         m_ivar_decl            = rhs.m_ivar_decl;
1602         m_property_setter_name = rhs.m_property_setter_name;
1603         m_property_getter_name = rhs.m_property_getter_name;
1604         m_property_attributes  = rhs.m_property_attributes;
1605
1606         if (rhs.m_metadata_ap.get())
1607         {
1608             m_metadata_ap.reset (new ClangASTMetadata());
1609             *m_metadata_ap = *rhs.m_metadata_ap;
1610         }
1611         return *this;
1612     }
1613
1614     bool
1615     Finalize()
1616     {
1617         return m_class_opaque_type.AddObjCClassProperty (m_property_name,
1618                                                          m_property_opaque_type,
1619                                                          m_ivar_decl,
1620                                                          m_property_setter_name,
1621                                                          m_property_getter_name,
1622                                                          m_property_attributes,
1623                                                          m_metadata_ap.get());
1624     }
1625 private:
1626     ClangASTType            m_class_opaque_type;
1627     const char             *m_property_name;
1628     ClangASTType            m_property_opaque_type;
1629     clang::ObjCIvarDecl    *m_ivar_decl;
1630     const char             *m_property_setter_name;
1631     const char             *m_property_getter_name;
1632     uint32_t                m_property_attributes;
1633     std::unique_ptr<ClangASTMetadata> m_metadata_ap;
1634 };
1635
1636 struct BitfieldInfo
1637 {
1638     uint64_t bit_size;
1639     uint64_t bit_offset;
1640
1641     BitfieldInfo () :
1642         bit_size (LLDB_INVALID_ADDRESS),
1643         bit_offset (LLDB_INVALID_ADDRESS)
1644     {
1645     }
1646
1647     bool IsValid ()
1648     {
1649         return (bit_size != LLDB_INVALID_ADDRESS) &&
1650                (bit_offset != LLDB_INVALID_ADDRESS);
1651     }
1652 };
1653
1654
1655 bool
1656 SymbolFileDWARF::ClassOrStructIsVirtual (DWARFCompileUnit* dwarf_cu,
1657                                          const DWARFDebugInfoEntry *parent_die)
1658 {
1659     if (parent_die)
1660     {
1661         for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
1662         {
1663             dw_tag_t tag = die->Tag();
1664             bool check_virtuality = false;
1665             switch (tag)
1666             {
1667                 case DW_TAG_inheritance:
1668                 case DW_TAG_subprogram:
1669                     check_virtuality = true;
1670                     break;
1671                 default:
1672                     break;
1673             }
1674             if (check_virtuality)
1675             {
1676                 if (die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_virtuality, 0) != 0)
1677                     return true;
1678             }
1679         }
1680     }
1681     return false;
1682 }
1683
1684 size_t
1685 SymbolFileDWARF::ParseChildMembers
1686 (
1687     const SymbolContext& sc,
1688     DWARFCompileUnit* dwarf_cu,
1689     const DWARFDebugInfoEntry *parent_die,
1690     ClangASTType &class_clang_type,
1691     const LanguageType class_language,
1692     std::vector<clang::CXXBaseSpecifier *>& base_classes,
1693     std::vector<int>& member_accessibilities,
1694     DWARFDIECollection& member_function_dies,
1695     DelayedPropertyList& delayed_properties,
1696     AccessType& default_accessibility,
1697     bool &is_a_class,
1698     LayoutInfo &layout_info
1699 )
1700 {
1701     if (parent_die == NULL)
1702         return 0;
1703
1704     size_t count = 0;
1705     const DWARFDebugInfoEntry *die;
1706     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
1707     uint32_t member_idx = 0;
1708     BitfieldInfo last_field_info;
1709
1710     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
1711     {
1712         dw_tag_t tag = die->Tag();
1713
1714         switch (tag)
1715         {
1716         case DW_TAG_member:
1717         case DW_TAG_APPLE_property:
1718             {
1719                 DWARFDebugInfoEntry::Attributes attributes;
1720                 const size_t num_attributes = die->GetAttributes (this,
1721                                                                   dwarf_cu,
1722                                                                   fixed_form_sizes,
1723                                                                   attributes);
1724                 if (num_attributes > 0)
1725                 {
1726                     Declaration decl;
1727                     //DWARFExpression location;
1728                     const char *name = NULL;
1729                     const char *prop_name = NULL;
1730                     const char *prop_getter_name = NULL;
1731                     const char *prop_setter_name = NULL;
1732                     uint32_t prop_attributes = 0;
1733
1734
1735                     bool is_artificial = false;
1736                     lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
1737                     AccessType accessibility = eAccessNone;
1738                     uint32_t member_byte_offset = UINT32_MAX;
1739                     size_t byte_size = 0;
1740                     size_t bit_offset = 0;
1741                     size_t bit_size = 0;
1742                     bool is_external = false; // On DW_TAG_members, this means the member is static
1743                     uint32_t i;
1744                     for (i=0; i<num_attributes && !is_artificial; ++i)
1745                     {
1746                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
1747                         DWARFFormValue form_value;
1748                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1749                         {
1750                             switch (attr)
1751                             {
1752                             case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
1753                             case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
1754                             case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
1755                             case DW_AT_name:        name = form_value.AsCString(&get_debug_str_data()); break;
1756                             case DW_AT_type:        encoding_uid = form_value.Reference(dwarf_cu); break;
1757                             case DW_AT_bit_offset:  bit_offset = form_value.Unsigned(); break;
1758                             case DW_AT_bit_size:    bit_size = form_value.Unsigned(); break;
1759                             case DW_AT_byte_size:   byte_size = form_value.Unsigned(); break;
1760                             case DW_AT_data_member_location:
1761                                 if (form_value.BlockData())
1762                                 {
1763                                     Value initialValue(0);
1764                                     Value memberOffset(0);
1765                                     const DataExtractor& debug_info_data = get_debug_info_data();
1766                                     uint32_t block_length = form_value.Unsigned();
1767                                     uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
1768                                     if (DWARFExpression::Evaluate(NULL, // ExecutionContext *
1769                                                                   NULL, // ClangExpressionVariableList *
1770                                                                   NULL, // ClangExpressionDeclMap *
1771                                                                   NULL, // RegisterContext *
1772                                                                   debug_info_data,
1773                                                                   block_offset,
1774                                                                   block_length,
1775                                                                   eRegisterKindDWARF,
1776                                                                   &initialValue,
1777                                                                   memberOffset,
1778                                                                   NULL))
1779                                     {
1780                                         member_byte_offset = memberOffset.ResolveValue(NULL).UInt();
1781                                     }
1782                                 }
1783                                 else
1784                                 {
1785                                     // With DWARF 3 and later, if the value is an integer constant,
1786                                     // this form value is the offset in bytes from the beginning
1787                                     // of the containing entity.
1788                                     member_byte_offset = form_value.Unsigned();
1789                                 }
1790                                 break;
1791
1792                             case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType (form_value.Unsigned()); break;
1793                             case DW_AT_artificial: is_artificial = form_value.Boolean(); break;
1794                             case DW_AT_APPLE_property_name:      prop_name = form_value.AsCString(&get_debug_str_data()); break;
1795                             case DW_AT_APPLE_property_getter:    prop_getter_name = form_value.AsCString(&get_debug_str_data()); break;
1796                             case DW_AT_APPLE_property_setter:    prop_setter_name = form_value.AsCString(&get_debug_str_data()); break;
1797                             case DW_AT_APPLE_property_attribute: prop_attributes = form_value.Unsigned(); break;
1798                             case DW_AT_external:                 is_external = form_value.Boolean(); break;
1799
1800                             default:
1801                             case DW_AT_declaration:
1802                             case DW_AT_description:
1803                             case DW_AT_mutable:
1804                             case DW_AT_visibility:
1805                             case DW_AT_sibling:
1806                                 break;
1807                             }
1808                         }
1809                     }
1810
1811                     if (prop_name)
1812                     {
1813                         ConstString fixed_getter;
1814                         ConstString fixed_setter;
1815
1816                         // Check if the property getter/setter were provided as full
1817                         // names.  We want basenames, so we extract them.
1818
1819                         if (prop_getter_name && prop_getter_name[0] == '-')
1820                         {
1821                             ObjCLanguageRuntime::MethodName prop_getter_method(prop_getter_name, true);
1822                             prop_getter_name = prop_getter_method.GetSelector().GetCString();
1823                         }
1824
1825                         if (prop_setter_name && prop_setter_name[0] == '-')
1826                         {
1827                             ObjCLanguageRuntime::MethodName prop_setter_method(prop_setter_name, true);
1828                             prop_setter_name = prop_setter_method.GetSelector().GetCString();
1829                         }
1830
1831                         // If the names haven't been provided, they need to be
1832                         // filled in.
1833
1834                         if (!prop_getter_name)
1835                         {
1836                             prop_getter_name = prop_name;
1837                         }
1838                         if (!prop_setter_name && prop_name[0] && !(prop_attributes & DW_APPLE_PROPERTY_readonly))
1839                         {
1840                             StreamString ss;
1841
1842                             ss.Printf("set%c%s:",
1843                                       toupper(prop_name[0]),
1844                                       &prop_name[1]);
1845
1846                             fixed_setter.SetCString(ss.GetData());
1847                             prop_setter_name = fixed_setter.GetCString();
1848                         }
1849                     }
1850
1851                     // Clang has a DWARF generation bug where sometimes it
1852                     // represents fields that are references with bad byte size
1853                     // and bit size/offset information such as:
1854                     //
1855                     //  DW_AT_byte_size( 0x00 )
1856                     //  DW_AT_bit_size( 0x40 )
1857                     //  DW_AT_bit_offset( 0xffffffffffffffc0 )
1858                     //
1859                     // So check the bit offset to make sure it is sane, and if
1860                     // the values are not sane, remove them. If we don't do this
1861                     // then we will end up with a crash if we try to use this
1862                     // type in an expression when clang becomes unhappy with its
1863                     // recycled debug info.
1864
1865                     if (bit_offset > 128)
1866                     {
1867                         bit_size = 0;
1868                         bit_offset = 0;
1869                     }
1870
1871                     // FIXME: Make Clang ignore Objective-C accessibility for expressions
1872                     if (class_language == eLanguageTypeObjC ||
1873                         class_language == eLanguageTypeObjC_plus_plus)
1874                         accessibility = eAccessNone;
1875
1876                     if (member_idx == 0 && !is_artificial && name && (strstr (name, "_vptr$") == name))
1877                     {
1878                         // Not all compilers will mark the vtable pointer
1879                         // member as artificial (llvm-gcc). We can't have
1880                         // the virtual members in our classes otherwise it
1881                         // throws off all child offsets since we end up
1882                         // having and extra pointer sized member in our
1883                         // class layouts.
1884                         is_artificial = true;
1885                     }
1886
1887                     // Handle static members
1888                     if (is_external && member_byte_offset == UINT32_MAX)
1889                     {
1890                         Type *var_type = ResolveTypeUID(encoding_uid);
1891
1892                         if (var_type)
1893                         {
1894                             if (accessibility == eAccessNone)
1895                                 accessibility = eAccessPublic;
1896                             class_clang_type.AddVariableToRecordType (name,
1897                                                                       var_type->GetClangLayoutType(),
1898                                                                       accessibility);
1899                         }
1900                         break;
1901                     }
1902
1903                     if (is_artificial == false)
1904                     {
1905                         Type *member_type = ResolveTypeUID(encoding_uid);
1906
1907                         clang::FieldDecl *field_decl = NULL;
1908                         if (tag == DW_TAG_member)
1909                         {
1910                             if (member_type)
1911                             {
1912                                 if (accessibility == eAccessNone)
1913                                     accessibility = default_accessibility;
1914                                 member_accessibilities.push_back(accessibility);
1915
1916                                 BitfieldInfo this_field_info;
1917
1918                                 this_field_info.bit_size = bit_size;
1919
1920                                 if (member_byte_offset != UINT32_MAX || bit_size != 0)
1921                                 {
1922                                     /////////////////////////////////////////////////////////////
1923                                     // How to locate a field given the DWARF debug information
1924                                     //
1925                                     // AT_byte_size indicates the size of the word in which the
1926                                     // bit offset must be interpreted.
1927                                     //
1928                                     // AT_data_member_location indicates the byte offset of the
1929                                     // word from the base address of the structure.
1930                                     //
1931                                     // AT_bit_offset indicates how many bits into the word
1932                                     // (according to the host endianness) the low-order bit of
1933                                     // the field starts.  AT_bit_offset can be negative.
1934                                     //
1935                                     // AT_bit_size indicates the size of the field in bits.
1936                                     /////////////////////////////////////////////////////////////
1937
1938                                     this_field_info.bit_offset = 0;
1939
1940                                     this_field_info.bit_offset += (member_byte_offset == UINT32_MAX ? 0 : (member_byte_offset * 8));
1941
1942                                     if (GetObjectFile()->GetByteOrder() == eByteOrderLittle)
1943                                     {
1944                                         this_field_info.bit_offset += byte_size * 8;
1945                                         this_field_info.bit_offset -= (bit_offset + bit_size);
1946                                     }
1947                                     else
1948                                     {
1949                                         this_field_info.bit_offset += bit_offset;
1950                                     }
1951                                 }
1952
1953                                 // If the member to be emitted did not start on a character boundary and there is
1954                                 // empty space between the last field and this one, then we need to emit an
1955                                 // anonymous member filling up the space up to its start.  There are three cases
1956                                 // here:
1957                                 //
1958                                 // 1 If the previous member ended on a character boundary, then we can emit an
1959                                 //   anonymous member starting at the most recent character boundary.
1960                                 //
1961                                 // 2 If the previous member did not end on a character boundary and the distance
1962                                 //   from the end of the previous member to the current member is less than a
1963                                 //   word width, then we can emit an anonymous member starting right after the
1964                                 //   previous member and right before this member.
1965                                 //
1966                                 // 3 If the previous member did not end on a character boundary and the distance
1967                                 //   from the end of the previous member to the current member is greater than
1968                                 //   or equal a word width, then we act as in Case 1.
1969
1970                                 const uint64_t character_width = 8;
1971                                 const uint64_t word_width = 32;
1972
1973                                 if (this_field_info.IsValid())
1974                                 {
1975                                     // Objective-C has invalid DW_AT_bit_offset values in older versions
1976                                     // of clang, so we have to be careful and only insert unnammed bitfields
1977                                     // if we have a new enough clang.
1978                                     bool detect_unnamed_bitfields = true;
1979
1980                                     if (class_language == eLanguageTypeObjC || class_language == eLanguageTypeObjC_plus_plus)
1981                                         detect_unnamed_bitfields = dwarf_cu->Supports_unnamed_objc_bitfields ();
1982
1983                                     if (detect_unnamed_bitfields)
1984                                     {
1985                                         BitfieldInfo anon_field_info;
1986
1987                                         if ((this_field_info.bit_offset % character_width) != 0) // not char aligned
1988                                         {
1989                                             uint64_t last_field_end = 0;
1990
1991                                             if (last_field_info.IsValid())
1992                                                 last_field_end = last_field_info.bit_offset + last_field_info.bit_size;
1993
1994                                             if (this_field_info.bit_offset != last_field_end)
1995                                             {
1996                                                 if (((last_field_end % character_width) == 0) ||                    // case 1
1997                                                     (this_field_info.bit_offset - last_field_end >= word_width))    // case 3
1998                                                 {
1999                                                     anon_field_info.bit_size = this_field_info.bit_offset % character_width;
2000                                                     anon_field_info.bit_offset = this_field_info.bit_offset - anon_field_info.bit_size;
2001                                                 }
2002                                                 else                                                                // case 2
2003                                                 {
2004                                                     anon_field_info.bit_size = this_field_info.bit_offset - last_field_end;
2005                                                     anon_field_info.bit_offset = last_field_end;
2006                                                 }
2007                                             }
2008                                         }
2009
2010                                         if (anon_field_info.IsValid())
2011                                         {
2012                                             clang::FieldDecl *unnamed_bitfield_decl = class_clang_type.AddFieldToRecordType (NULL,
2013                                                                                                                              GetClangASTContext().GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, word_width),
2014                                                                                                                              accessibility,
2015                                                                                                                              anon_field_info.bit_size);
2016
2017                                             layout_info.field_offsets.insert(std::make_pair(unnamed_bitfield_decl, anon_field_info.bit_offset));
2018                                         }
2019                                     }
2020                                 }
2021
2022                                 ClangASTType member_clang_type = member_type->GetClangLayoutType();
2023
2024                                 {
2025                                     // Older versions of clang emit array[0] and array[1] in the same way (<rdar://problem/12566646>).
2026                                     // If the current field is at the end of the structure, then there is definitely no room for extra
2027                                     // elements and we override the type to array[0].
2028
2029                                     ClangASTType member_array_element_type;
2030                                     uint64_t member_array_size;
2031                                     bool member_array_is_incomplete;
2032
2033                                     if (member_clang_type.IsArrayType(&member_array_element_type,
2034                                                                       &member_array_size,
2035                                                                       &member_array_is_incomplete) &&
2036                                         !member_array_is_incomplete)
2037                                     {
2038                                         uint64_t parent_byte_size = parent_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, UINT64_MAX);
2039
2040                                         if (member_byte_offset >= parent_byte_size)
2041                                         {
2042                                             if (member_array_size != 1)
2043                                             {
2044                                                 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,
2045                                                                                            MakeUserID(die->GetOffset()),
2046                                                                                            name,
2047                                                                                            encoding_uid,
2048                                                                                            MakeUserID(parent_die->GetOffset()));
2049                                             }
2050
2051                                             member_clang_type = GetClangASTContext().CreateArrayType(member_array_element_type, 0, false);
2052                                         }
2053                                     }
2054                                 }
2055
2056                                 field_decl = class_clang_type.AddFieldToRecordType (name,
2057                                                                                     member_clang_type,
2058                                                                                     accessibility,
2059                                                                                     bit_size);
2060
2061                                 GetClangASTContext().SetMetadataAsUserID (field_decl, MakeUserID(die->GetOffset()));
2062
2063                                 if (this_field_info.IsValid())
2064                                 {
2065                                     layout_info.field_offsets.insert(std::make_pair(field_decl, this_field_info.bit_offset));
2066                                     last_field_info = this_field_info;
2067                                 }
2068                             }
2069                             else
2070                             {
2071                                 if (name)
2072                                     GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 " which was unable to be parsed",
2073                                                                                MakeUserID(die->GetOffset()),
2074                                                                                name,
2075                                                                                encoding_uid);
2076                                 else
2077                                     GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member refers to type 0x%8.8" PRIx64 " which was unable to be parsed",
2078                                                                                MakeUserID(die->GetOffset()),
2079                                                                                encoding_uid);
2080                             }
2081                         }
2082
2083                         if (prop_name != NULL)
2084                         {
2085                             clang::ObjCIvarDecl *ivar_decl = NULL;
2086
2087                             if (field_decl)
2088                             {
2089                                 ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl);
2090                                 assert (ivar_decl != NULL);
2091                             }
2092
2093                             ClangASTMetadata metadata;
2094                             metadata.SetUserID (MakeUserID(die->GetOffset()));
2095                             delayed_properties.push_back(DelayedAddObjCClassProperty(class_clang_type,
2096                                                                                      prop_name,
2097                                                                                      member_type->GetClangLayoutType(),
2098                                                                                      ivar_decl,
2099                                                                                      prop_setter_name,
2100                                                                                      prop_getter_name,
2101                                                                                      prop_attributes,
2102                                                                                      &metadata));
2103
2104                             if (ivar_decl)
2105                                 GetClangASTContext().SetMetadataAsUserID (ivar_decl, MakeUserID(die->GetOffset()));
2106                         }
2107                     }
2108                 }
2109                 ++member_idx;
2110             }
2111             break;
2112
2113         case DW_TAG_subprogram:
2114             // Let the type parsing code handle this one for us.
2115             member_function_dies.Append (die);
2116             break;
2117
2118         case DW_TAG_inheritance:
2119             {
2120                 is_a_class = true;
2121                 if (default_accessibility == eAccessNone)
2122                     default_accessibility = eAccessPrivate;
2123                 // TODO: implement DW_TAG_inheritance type parsing
2124                 DWARFDebugInfoEntry::Attributes attributes;
2125                 const size_t num_attributes = die->GetAttributes (this,
2126                                                                   dwarf_cu,
2127                                                                   fixed_form_sizes,
2128                                                                   attributes);
2129                 if (num_attributes > 0)
2130                 {
2131                     Declaration decl;
2132                     DWARFExpression location;
2133                     lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
2134                     AccessType accessibility = default_accessibility;
2135                     bool is_virtual = false;
2136                     bool is_base_of_class = true;
2137                     off_t member_byte_offset = 0;
2138                     uint32_t i;
2139                     for (i=0; i<num_attributes; ++i)
2140                     {
2141                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
2142                         DWARFFormValue form_value;
2143                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
2144                         {
2145                             switch (attr)
2146                             {
2147                             case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
2148                             case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
2149                             case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
2150                             case DW_AT_type:        encoding_uid = form_value.Reference(dwarf_cu); break;
2151                             case DW_AT_data_member_location:
2152                                 if (form_value.BlockData())
2153                                 {
2154                                     Value initialValue(0);
2155                                     Value memberOffset(0);
2156                                     const DataExtractor& debug_info_data = get_debug_info_data();
2157                                     uint32_t block_length = form_value.Unsigned();
2158                                     uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
2159                                     if (DWARFExpression::Evaluate (NULL,
2160                                                                    NULL,
2161                                                                    NULL,
2162                                                                    NULL,
2163                                                                    debug_info_data,
2164                                                                    block_offset,
2165                                                                    block_length,
2166                                                                    eRegisterKindDWARF,
2167                                                                    &initialValue,
2168                                                                    memberOffset,
2169                                                                    NULL))
2170                                     {
2171                                         member_byte_offset = memberOffset.ResolveValue(NULL).UInt();
2172                                     }
2173                                 }
2174                                 else
2175                                 {
2176                                     // With DWARF 3 and later, if the value is an integer constant,
2177                                     // this form value is the offset in bytes from the beginning
2178                                     // of the containing entity.
2179                                     member_byte_offset = form_value.Unsigned();
2180                                 }
2181                                 break;
2182
2183                             case DW_AT_accessibility:
2184                                 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
2185                                 break;
2186
2187                             case DW_AT_virtuality:
2188                                 is_virtual = form_value.Boolean();
2189                                 break;
2190
2191                             case DW_AT_sibling:
2192                                 break;
2193
2194                             default:
2195                                 break;
2196                             }
2197                         }
2198                     }
2199
2200                     Type *base_class_type = ResolveTypeUID(encoding_uid);
2201                     assert(base_class_type);
2202
2203                     ClangASTType base_class_clang_type = base_class_type->GetClangFullType();
2204                     assert (base_class_clang_type);
2205                     if (class_language == eLanguageTypeObjC)
2206                     {
2207                         class_clang_type.SetObjCSuperClass(base_class_clang_type);
2208                     }
2209                     else
2210                     {
2211                         base_classes.push_back (base_class_clang_type.CreateBaseClassSpecifier (accessibility,
2212                                                                                                is_virtual,
2213                                                                                                is_base_of_class));
2214
2215                         if (is_virtual)
2216                         {
2217                             layout_info.vbase_offsets.insert(std::make_pair(class_clang_type.GetAsCXXRecordDecl(),
2218                                                                             clang::CharUnits::fromQuantity(member_byte_offset)));
2219                         }
2220                         else
2221                         {
2222                             layout_info.base_offsets.insert(std::make_pair(class_clang_type.GetAsCXXRecordDecl(),
2223                                                                            clang::CharUnits::fromQuantity(member_byte_offset)));
2224                         }
2225                     }
2226                 }
2227             }
2228             break;
2229
2230         default:
2231             break;
2232         }
2233     }
2234
2235     return count;
2236 }
2237
2238
2239 clang::DeclContext*
2240 SymbolFileDWARF::GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid)
2241 {
2242     DWARFDebugInfo* debug_info = DebugInfo();
2243     if (debug_info && UserIDMatches(type_uid))
2244     {
2245         DWARFCompileUnitSP cu_sp;
2246         const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(type_uid, &cu_sp);
2247         if (die)
2248             return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL);
2249     }
2250     return NULL;
2251 }
2252
2253 clang::DeclContext*
2254 SymbolFileDWARF::GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid)
2255 {
2256     if (UserIDMatches(type_uid))
2257         return GetClangDeclContextForDIEOffset (sc, type_uid);
2258     return NULL;
2259 }
2260
2261 Type*
2262 SymbolFileDWARF::ResolveTypeUID (lldb::user_id_t type_uid)
2263 {
2264     if (UserIDMatches(type_uid))
2265     {
2266         DWARFDebugInfo* debug_info = DebugInfo();
2267         if (debug_info)
2268         {
2269             DWARFCompileUnitSP cu_sp;
2270             const DWARFDebugInfoEntry* type_die = debug_info->GetDIEPtr(type_uid, &cu_sp);
2271             const bool assert_not_being_parsed = true;
2272             return ResolveTypeUID (cu_sp.get(), type_die, assert_not_being_parsed);
2273         }
2274     }
2275     return NULL;
2276 }
2277
2278 Type*
2279 SymbolFileDWARF::ResolveTypeUID (DWARFCompileUnit* cu, const DWARFDebugInfoEntry* die, bool assert_not_being_parsed)
2280 {
2281     if (die != NULL)
2282     {
2283         Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
2284         if (log)
2285             GetObjectFile()->GetModule()->LogMessage (log,
2286                                                       "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s'",
2287                                                       die->GetOffset(),
2288                                                       DW_TAG_value_to_name(die->Tag()),
2289                                                       die->GetName(this, cu));
2290
2291         // We might be coming in in the middle of a type tree (a class
2292         // withing a class, an enum within a class), so parse any needed
2293         // parent DIEs before we get to this one...
2294         const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die);
2295         switch (decl_ctx_die->Tag())
2296         {
2297             case DW_TAG_structure_type:
2298             case DW_TAG_union_type:
2299             case DW_TAG_class_type:
2300             {
2301                 // Get the type, which could be a forward declaration
2302                 if (log)
2303                     GetObjectFile()->GetModule()->LogMessage (log,
2304                                                               "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent forward type for 0x%8.8x",
2305                                                               die->GetOffset(),
2306                                                               DW_TAG_value_to_name(die->Tag()),
2307                                                               die->GetName(this, cu),
2308                                                               decl_ctx_die->GetOffset());
2309 //
2310 //                Type *parent_type = ResolveTypeUID (cu, decl_ctx_die, assert_not_being_parsed);
2311 //                if (child_requires_parent_class_union_or_struct_to_be_completed(die->Tag()))
2312 //                {
2313 //                    if (log)
2314 //                        GetObjectFile()->GetModule()->LogMessage (log,
2315 //                                                                  "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent full type for 0x%8.8x since die is a function",
2316 //                                                                  die->GetOffset(),
2317 //                                                                  DW_TAG_value_to_name(die->Tag()),
2318 //                                                                  die->GetName(this, cu),
2319 //                                                                  decl_ctx_die->GetOffset());
2320 //                    // Ask the type to complete itself if it already hasn't since if we
2321 //                    // want a function (method or static) from a class, the class must
2322 //                    // create itself and add it's own methods and class functions.
2323 //                    if (parent_type)
2324 //                        parent_type->GetClangFullType();
2325 //                }
2326             }
2327             break;
2328
2329             default:
2330                 break;
2331         }
2332         return ResolveType (cu, die);
2333     }
2334     return NULL;
2335 }
2336
2337 // This function is used when SymbolFileDWARFDebugMap owns a bunch of
2338 // SymbolFileDWARF objects to detect if this DWARF file is the one that
2339 // can resolve a clang_type.
2340 bool
2341 SymbolFileDWARF::HasForwardDeclForClangType (const ClangASTType &clang_type)
2342 {
2343     ClangASTType clang_type_no_qualifiers = clang_type.RemoveFastQualifiers();
2344     const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers.GetOpaqueQualType());
2345     return die != NULL;
2346 }
2347
2348
2349 bool
2350 SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (ClangASTType &clang_type)
2351 {
2352     // We have a struct/union/class/enum that needs to be fully resolved.
2353     ClangASTType clang_type_no_qualifiers = clang_type.RemoveFastQualifiers();
2354     const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers.GetOpaqueQualType());
2355     if (die == NULL)
2356     {
2357         // We have already resolved this type...
2358         return true;
2359     }
2360     // Once we start resolving this type, remove it from the forward declaration
2361     // map in case anyone child members or other types require this type to get resolved.
2362     // The type will get resolved when all of the calls to SymbolFileDWARF::ResolveClangOpaqueTypeDefinition
2363     // are done.
2364     m_forward_decl_clang_type_to_die.erase (clang_type_no_qualifiers.GetOpaqueQualType());
2365
2366
2367     // Disable external storage for this type so we don't get anymore
2368     // clang::ExternalASTSource queries for this type.
2369     clang_type.SetHasExternalStorage (false);
2370
2371     DWARFDebugInfo* debug_info = DebugInfo();
2372
2373     DWARFCompileUnit *dwarf_cu = debug_info->GetCompileUnitContainingDIE (die->GetOffset()).get();
2374     Type *type = m_die_to_type.lookup (die);
2375
2376     const dw_tag_t tag = die->Tag();
2377
2378     Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION));
2379     if (log)
2380     {
2381         GetObjectFile()->GetModule()->LogMessageVerboseBacktrace (log,
2382                                                                   "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...",
2383                                                                   MakeUserID(die->GetOffset()),
2384                                                                   DW_TAG_value_to_name(tag),
2385                                                                   type->GetName().AsCString());
2386
2387     }
2388     assert (clang_type);
2389     DWARFDebugInfoEntry::Attributes attributes;
2390
2391     switch (tag)
2392     {
2393     case DW_TAG_structure_type:
2394     case DW_TAG_union_type:
2395     case DW_TAG_class_type:
2396         {
2397             LayoutInfo layout_info;
2398
2399             {
2400                 if (die->HasChildren())
2401                 {
2402
2403                     LanguageType class_language = eLanguageTypeUnknown;
2404                     if (clang_type.IsObjCObjectOrInterfaceType())
2405                     {
2406                         class_language = eLanguageTypeObjC;
2407                         // For objective C we don't start the definition when
2408                         // the class is created.
2409                         clang_type.StartTagDeclarationDefinition ();
2410                     }
2411
2412                     int tag_decl_kind = -1;
2413                     AccessType default_accessibility = eAccessNone;
2414                     if (tag == DW_TAG_structure_type)
2415                     {
2416                         tag_decl_kind = clang::TTK_Struct;
2417                         default_accessibility = eAccessPublic;
2418                     }
2419                     else if (tag == DW_TAG_union_type)
2420                     {
2421                         tag_decl_kind = clang::TTK_Union;
2422                         default_accessibility = eAccessPublic;
2423                     }
2424                     else if (tag == DW_TAG_class_type)
2425                     {
2426                         tag_decl_kind = clang::TTK_Class;
2427                         default_accessibility = eAccessPrivate;
2428                     }
2429
2430                     SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
2431                     std::vector<clang::CXXBaseSpecifier *> base_classes;
2432                     std::vector<int> member_accessibilities;
2433                     bool is_a_class = false;
2434                     // Parse members and base classes first
2435                     DWARFDIECollection member_function_dies;
2436
2437                     DelayedPropertyList delayed_properties;
2438                     ParseChildMembers (sc,
2439                                        dwarf_cu,
2440                                        die,
2441                                        clang_type,
2442                                        class_language,
2443                                        base_classes,
2444                                        member_accessibilities,
2445                                        member_function_dies,
2446                                        delayed_properties,
2447                                        default_accessibility,
2448                                        is_a_class,
2449                                        layout_info);
2450
2451                     // Now parse any methods if there were any...
2452                     size_t num_functions = member_function_dies.Size();
2453                     if (num_functions > 0)
2454                     {
2455                         for (size_t i=0; i<num_functions; ++i)
2456                         {
2457                             ResolveType(dwarf_cu, member_function_dies.GetDIEPtrAtIndex(i));
2458                         }
2459                     }
2460
2461                     if (class_language == eLanguageTypeObjC)
2462                     {
2463                         std::string class_str (clang_type.GetTypeName());
2464                         if (!class_str.empty())
2465                         {
2466
2467                             DIEArray method_die_offsets;
2468                             if (m_using_apple_tables)
2469                             {
2470                                 if (m_apple_objc_ap.get())
2471                                     m_apple_objc_ap->FindByName(class_str.c_str(), method_die_offsets);
2472                             }
2473                             else
2474                             {
2475                                 if (!m_indexed)
2476                                     Index ();
2477
2478                                 ConstString class_name (class_str.c_str());
2479                                 m_objc_class_selectors_index.Find (class_name, method_die_offsets);
2480                             }
2481
2482                             if (!method_die_offsets.empty())
2483                             {
2484                                 DWARFDebugInfo* debug_info = DebugInfo();
2485
2486                                 DWARFCompileUnit* method_cu = NULL;
2487                                 const size_t num_matches = method_die_offsets.size();
2488                                 for (size_t i=0; i<num_matches; ++i)
2489                                 {
2490                                     const dw_offset_t die_offset = method_die_offsets[i];
2491                                     DWARFDebugInfoEntry *method_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &method_cu);
2492
2493                                     if (method_die)
2494                                         ResolveType (method_cu, method_die);
2495                                     else
2496                                     {
2497                                         if (m_using_apple_tables)
2498                                         {
2499                                             GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_objc accelerator table had bad die 0x%8.8x for '%s')\n",
2500                                                                                                        die_offset, class_str.c_str());
2501                                         }
2502                                     }
2503                                 }
2504                             }
2505
2506                             for (DelayedPropertyList::iterator pi = delayed_properties.begin(), pe = delayed_properties.end();
2507                                  pi != pe;
2508                                  ++pi)
2509                                 pi->Finalize();
2510                         }
2511                     }
2512
2513                     // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we
2514                     // need to tell the clang type it is actually a class.
2515                     if (class_language != eLanguageTypeObjC)
2516                     {
2517                         if (is_a_class && tag_decl_kind != clang::TTK_Class)
2518                             clang_type.SetTagTypeKind (clang::TTK_Class);
2519                     }
2520
2521                     // Since DW_TAG_structure_type gets used for both classes
2522                     // and structures, we may need to set any DW_TAG_member
2523                     // fields to have a "private" access if none was specified.
2524                     // When we parsed the child members we tracked that actual
2525                     // accessibility value for each DW_TAG_member in the
2526                     // "member_accessibilities" array. If the value for the
2527                     // member is zero, then it was set to the "default_accessibility"
2528                     // which for structs was "public". Below we correct this
2529                     // by setting any fields to "private" that weren't correctly
2530                     // set.
2531                     if (is_a_class && !member_accessibilities.empty())
2532                     {
2533                         // This is a class and all members that didn't have
2534                         // their access specified are private.
2535                         clang_type.SetDefaultAccessForRecordFields (eAccessPrivate,
2536                                                                     &member_accessibilities.front(),
2537                                                                     member_accessibilities.size());
2538                     }
2539
2540                     if (!base_classes.empty())
2541                     {
2542                         clang_type.SetBaseClassesForClassType (&base_classes.front(),
2543                                                                base_classes.size());
2544
2545                         // Clang will copy each CXXBaseSpecifier in "base_classes"
2546                         // so we have to free them all.
2547                         ClangASTType::DeleteBaseClassSpecifiers (&base_classes.front(),
2548                                                                  base_classes.size());
2549                     }
2550                 }
2551             }
2552
2553             clang_type.BuildIndirectFields ();
2554             clang_type.CompleteTagDeclarationDefinition ();
2555
2556             if (!layout_info.field_offsets.empty() ||
2557                 !layout_info.base_offsets.empty()  ||
2558                 !layout_info.vbase_offsets.empty() )
2559             {
2560                 if (type)
2561                     layout_info.bit_size = type->GetByteSize() * 8;
2562                 if (layout_info.bit_size == 0)
2563                     layout_info.bit_size = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, 0) * 8;
2564
2565                 clang::CXXRecordDecl *record_decl = clang_type.GetAsCXXRecordDecl();
2566                 if (record_decl)
2567                 {
2568                     if (log)
2569                     {
2570                         GetObjectFile()->GetModule()->LogMessage (log,
2571                                                                   "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])",
2572                                                                   clang_type.GetOpaqueQualType(),
2573                                                                   record_decl,
2574                                                                   layout_info.bit_size,
2575                                                                   layout_info.alignment,
2576                                                                   (uint32_t)layout_info.field_offsets.size(),
2577                                                                   (uint32_t)layout_info.base_offsets.size(),
2578                                                                   (uint32_t)layout_info.vbase_offsets.size());
2579
2580                         uint32_t idx;
2581                         {
2582                         llvm::DenseMap <const clang::FieldDecl *, uint64_t>::const_iterator pos, end = layout_info.field_offsets.end();
2583                         for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; ++pos, ++idx)
2584                         {
2585                             GetObjectFile()->GetModule()->LogMessage (log,
2586                                                                       "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) field[%u] = { bit_offset=%u, name='%s' }",
2587                                                                       clang_type.GetOpaqueQualType(),
2588                                                                       idx,
2589                                                                       (uint32_t)pos->second,
2590                                                                       pos->first->getNameAsString().c_str());
2591                         }
2592                         }
2593
2594                         {
2595                         llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator base_pos, base_end = layout_info.base_offsets.end();
2596                         for (idx = 0, base_pos = layout_info.base_offsets.begin(); base_pos != base_end; ++base_pos, ++idx)
2597                         {
2598                             GetObjectFile()->GetModule()->LogMessage (log,
2599                                                                       "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) base[%u] = { byte_offset=%u, name='%s' }",
2600                                                                       clang_type.GetOpaqueQualType(),
2601                                                                       idx,
2602                                                                       (uint32_t)base_pos->second.getQuantity(),
2603                                                                       base_pos->first->getNameAsString().c_str());
2604                         }
2605                         }
2606                         {
2607                         llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator vbase_pos, vbase_end = layout_info.vbase_offsets.end();
2608                         for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); vbase_pos != vbase_end; ++vbase_pos, ++idx)
2609                         {
2610                             GetObjectFile()->GetModule()->LogMessage (log,
2611                                                                       "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) vbase[%u] = { byte_offset=%u, name='%s' }",
2612                                                                       clang_type.GetOpaqueQualType(),
2613                                                                       idx,
2614                                                                       (uint32_t)vbase_pos->second.getQuantity(),
2615                                                                       vbase_pos->first->getNameAsString().c_str());
2616                         }
2617                         }
2618                     }
2619                     m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info));
2620                 }
2621             }
2622         }
2623
2624         return clang_type;
2625
2626     case DW_TAG_enumeration_type:
2627         clang_type.StartTagDeclarationDefinition ();
2628         if (die->HasChildren())
2629         {
2630             SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
2631             bool is_signed = false;
2632             clang_type.IsIntegerType(is_signed);
2633             ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), dwarf_cu, die);
2634         }
2635         clang_type.CompleteTagDeclarationDefinition ();
2636         return clang_type;
2637
2638     default:
2639         assert(false && "not a forward clang type decl!");
2640         break;
2641     }
2642     return false;
2643 }
2644
2645 Type*
2646 SymbolFileDWARF::ResolveType (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* type_die, bool assert_not_being_parsed)
2647 {
2648     if (type_die != NULL)
2649     {
2650         Type *type = m_die_to_type.lookup (type_die);
2651
2652         if (type == NULL)
2653             type = GetTypeForDIE (dwarf_cu, type_die).get();
2654
2655         if (assert_not_being_parsed)
2656         {
2657             if (type != DIE_IS_BEING_PARSED)
2658                 return type;
2659
2660             GetObjectFile()->GetModule()->ReportError ("Parsing a die that is being parsed die: 0x%8.8x: %s %s",
2661                                                        type_die->GetOffset(),
2662                                                        DW_TAG_value_to_name(type_die->Tag()),
2663                                                        type_die->GetName(this, dwarf_cu));
2664
2665         }
2666         else
2667             return type;
2668     }
2669     return NULL;
2670 }
2671
2672 CompileUnit*
2673 SymbolFileDWARF::GetCompUnitForDWARFCompUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx)
2674 {
2675     // Check if the symbol vendor already knows about this compile unit?
2676     if (dwarf_cu->GetUserData() == NULL)
2677     {
2678         // The symbol vendor doesn't know about this compile unit, we
2679         // need to parse and add it to the symbol vendor object.
2680         return ParseCompileUnit(dwarf_cu, cu_idx).get();
2681     }
2682     return (CompileUnit*)dwarf_cu->GetUserData();
2683 }
2684
2685 bool
2686 SymbolFileDWARF::GetFunction (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* func_die, SymbolContext& sc)
2687 {
2688     sc.Clear(false);
2689     // Check if the symbol vendor already knows about this compile unit?
2690     sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
2691
2692     sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(func_die->GetOffset())).get();
2693     if (sc.function == NULL)
2694         sc.function = ParseCompileUnitFunction(sc, dwarf_cu, func_die);
2695
2696     if (sc.function)
2697     {
2698         sc.module_sp = sc.function->CalculateSymbolContextModule();
2699         return true;
2700     }
2701
2702     return false;
2703 }
2704
2705 uint32_t
2706 SymbolFileDWARF::ResolveSymbolContext (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc)
2707 {
2708     Timer scoped_timer(__PRETTY_FUNCTION__,
2709                        "SymbolFileDWARF::ResolveSymbolContext (so_addr = { section = %p, offset = 0x%" PRIx64 " }, resolve_scope = 0x%8.8x)",
2710                        so_addr.GetSection().get(),
2711                        so_addr.GetOffset(),
2712                        resolve_scope);
2713     uint32_t resolved = 0;
2714     if (resolve_scope & (   eSymbolContextCompUnit |
2715                             eSymbolContextFunction |
2716                             eSymbolContextBlock |
2717                             eSymbolContextLineEntry))
2718     {
2719         lldb::addr_t file_vm_addr = so_addr.GetFileAddress();
2720
2721         DWARFDebugInfo* debug_info = DebugInfo();
2722         if (debug_info)
2723         {
2724             const dw_offset_t cu_offset = debug_info->GetCompileUnitAranges().FindAddress(file_vm_addr);
2725             if (cu_offset != DW_INVALID_OFFSET)
2726             {
2727                 uint32_t cu_idx = DW_INVALID_INDEX;
2728                 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnit(cu_offset, &cu_idx).get();
2729                 if (dwarf_cu)
2730                 {
2731                     sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2732                     if (sc.comp_unit)
2733                     {
2734                         resolved |= eSymbolContextCompUnit;
2735
2736                         bool force_check_line_table = false;
2737                         if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock))
2738                         {
2739                             DWARFDebugInfoEntry *function_die = NULL;
2740                             DWARFDebugInfoEntry *block_die = NULL;
2741                             if (resolve_scope & eSymbolContextBlock)
2742                             {
2743                                 dwarf_cu->LookupAddress(file_vm_addr, &function_die, &block_die);
2744                             }
2745                             else
2746                             {
2747                                 dwarf_cu->LookupAddress(file_vm_addr, &function_die, NULL);
2748                             }
2749
2750                             if (function_die != NULL)
2751                             {
2752                                 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get();
2753                                 if (sc.function == NULL)
2754                                     sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die);
2755                             }
2756                             else
2757                             {
2758                                 // We might have had a compile unit that had discontiguous
2759                                 // address ranges where the gaps are symbols that don't have
2760                                 // any debug info. Discontiguous compile unit address ranges
2761                                 // should only happen when there aren't other functions from
2762                                 // other compile units in these gaps. This helps keep the size
2763                                 // of the aranges down.
2764                                 force_check_line_table = true;
2765                             }
2766
2767                             if (sc.function != NULL)
2768                             {
2769                                 resolved |= eSymbolContextFunction;
2770
2771                                 if (resolve_scope & eSymbolContextBlock)
2772                                 {
2773                                     Block& block = sc.function->GetBlock (true);
2774
2775                                     if (block_die != NULL)
2776                                         sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset()));
2777                                     else
2778                                         sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset()));
2779                                     if (sc.block)
2780                                         resolved |= eSymbolContextBlock;
2781                                 }
2782                             }
2783                         }
2784
2785                         if ((resolve_scope & eSymbolContextLineEntry) || force_check_line_table)
2786                         {
2787                             LineTable *line_table = sc.comp_unit->GetLineTable();
2788                             if (line_table != NULL)
2789                             {
2790                                 // And address that makes it into this function should be in terms
2791                                 // of this debug file if there is no debug map, or it will be an
2792                                 // address in the .o file which needs to be fixed up to be in terms
2793                                 // of the debug map executable. Either way, calling FixupAddress()
2794                                 // will work for us.
2795                                 Address exe_so_addr (so_addr);
2796                                 if (FixupAddress(exe_so_addr))
2797                                 {
2798                                     if (line_table->FindLineEntryByAddress (exe_so_addr, sc.line_entry))
2799                                     {
2800                                         resolved |= eSymbolContextLineEntry;
2801                                     }
2802                                 }
2803                             }
2804                         }
2805
2806                         if (force_check_line_table && !(resolved & eSymbolContextLineEntry))
2807                         {
2808                             // We might have had a compile unit that had discontiguous
2809                             // address ranges where the gaps are symbols that don't have
2810                             // any debug info. Discontiguous compile unit address ranges
2811                             // should only happen when there aren't other functions from
2812                             // other compile units in these gaps. This helps keep the size
2813                             // of the aranges down.
2814                             sc.comp_unit = NULL;
2815                             resolved &= ~eSymbolContextCompUnit;
2816                         }
2817                     }
2818                     else
2819                     {
2820                         GetObjectFile()->GetModule()->ReportWarning ("0x%8.8x: compile unit %u failed to create a valid lldb_private::CompileUnit class.",
2821                                                                      cu_offset,
2822                                                                      cu_idx);
2823                     }
2824                 }
2825             }
2826         }
2827     }
2828     return resolved;
2829 }
2830
2831
2832
2833 uint32_t
2834 SymbolFileDWARF::ResolveSymbolContext(const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list)
2835 {
2836     const uint32_t prev_size = sc_list.GetSize();
2837     if (resolve_scope & eSymbolContextCompUnit)
2838     {
2839         DWARFDebugInfo* debug_info = DebugInfo();
2840         if (debug_info)
2841         {
2842             uint32_t cu_idx;
2843             DWARFCompileUnit* dwarf_cu = NULL;
2844
2845             for (cu_idx = 0; (dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx)) != NULL; ++cu_idx)
2846             {
2847                 CompileUnit *dc_cu = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2848                 const bool full_match = file_spec.GetDirectory();
2849                 bool file_spec_matches_cu_file_spec = dc_cu != NULL && FileSpec::Equal(file_spec, *dc_cu, full_match);
2850                 if (check_inlines || file_spec_matches_cu_file_spec)
2851                 {
2852                     SymbolContext sc (m_obj_file->GetModule());
2853                     sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2854                     if (sc.comp_unit)
2855                     {
2856                         uint32_t file_idx = UINT32_MAX;
2857
2858                         // If we are looking for inline functions only and we don't
2859                         // find it in the support files, we are done.
2860                         if (check_inlines)
2861                         {
2862                             file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true);
2863                             if (file_idx == UINT32_MAX)
2864                                 continue;
2865                         }
2866
2867                         if (line != 0)
2868                         {
2869                             LineTable *line_table = sc.comp_unit->GetLineTable();
2870
2871                             if (line_table != NULL && line != 0)
2872                             {
2873                                 // We will have already looked up the file index if
2874                                 // we are searching for inline entries.
2875                                 if (!check_inlines)
2876                                     file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true);
2877
2878                                 if (file_idx != UINT32_MAX)
2879                                 {
2880                                     uint32_t found_line;
2881                                     uint32_t line_idx = line_table->FindLineEntryIndexByFileIndex (0, file_idx, line, false, &sc.line_entry);
2882                                     found_line = sc.line_entry.line;
2883
2884                                     while (line_idx != UINT32_MAX)
2885                                     {
2886                                         sc.function = NULL;
2887                                         sc.block = NULL;
2888                                         if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock))
2889                                         {
2890                                             const lldb::addr_t file_vm_addr = sc.line_entry.range.GetBaseAddress().GetFileAddress();
2891                                             if (file_vm_addr != LLDB_INVALID_ADDRESS)
2892                                             {
2893                                                 DWARFDebugInfoEntry *function_die = NULL;
2894                                                 DWARFDebugInfoEntry *block_die = NULL;
2895                                                 dwarf_cu->LookupAddress(file_vm_addr, &function_die, resolve_scope & eSymbolContextBlock ? &block_die : NULL);
2896
2897                                                 if (function_die != NULL)
2898                                                 {
2899                                                     sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get();
2900                                                     if (sc.function == NULL)
2901                                                         sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die);
2902                                                 }
2903
2904                                                 if (sc.function != NULL)
2905                                                 {
2906                                                     Block& block = sc.function->GetBlock (true);
2907
2908                                                     if (block_die != NULL)
2909                                                         sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset()));
2910                                                     else
2911                                                         sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset()));
2912                                                 }
2913                                             }
2914                                         }
2915
2916                                         sc_list.Append(sc);
2917                                         line_idx = line_table->FindLineEntryIndexByFileIndex (line_idx + 1, file_idx, found_line, true, &sc.line_entry);
2918                                     }
2919                                 }
2920                             }
2921                             else if (file_spec_matches_cu_file_spec && !check_inlines)
2922                             {
2923                                 // only append the context if we aren't looking for inline call sites
2924                                 // by file and line and if the file spec matches that of the compile unit
2925                                 sc_list.Append(sc);
2926                             }
2927                         }
2928                         else if (file_spec_matches_cu_file_spec && !check_inlines)
2929                         {
2930                             // only append the context if we aren't looking for inline call sites
2931                             // by file and line and if the file spec matches that of the compile unit
2932                             sc_list.Append(sc);
2933                         }
2934
2935                         if (!check_inlines)
2936                             break;
2937                     }
2938                 }
2939             }
2940         }
2941     }
2942     return sc_list.GetSize() - prev_size;
2943 }
2944
2945 void
2946 SymbolFileDWARF::Index ()
2947 {
2948     if (m_indexed)
2949         return;
2950     m_indexed = true;
2951     Timer scoped_timer (__PRETTY_FUNCTION__,
2952                         "SymbolFileDWARF::Index (%s)",
2953                         GetObjectFile()->GetFileSpec().GetFilename().AsCString());
2954
2955     DWARFDebugInfo* debug_info = DebugInfo();
2956     if (debug_info)
2957     {
2958         uint32_t cu_idx = 0;
2959         const uint32_t num_compile_units = GetNumCompileUnits();
2960         for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx)
2961         {
2962             DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx);
2963
2964             bool clear_dies = dwarf_cu->ExtractDIEsIfNeeded (false) > 1;
2965
2966             dwarf_cu->Index (cu_idx,
2967                              m_function_basename_index,
2968                              m_function_fullname_index,
2969                              m_function_method_index,
2970                              m_function_selector_index,
2971                              m_objc_class_selectors_index,
2972                              m_global_index,
2973                              m_type_index,
2974                              m_namespace_index);
2975
2976             // Keep memory down by clearing DIEs if this generate function
2977             // caused them to be parsed
2978             if (clear_dies)
2979                 dwarf_cu->ClearDIEs (true);
2980         }
2981
2982         m_function_basename_index.Finalize();
2983         m_function_fullname_index.Finalize();
2984         m_function_method_index.Finalize();
2985         m_function_selector_index.Finalize();
2986         m_objc_class_selectors_index.Finalize();
2987         m_global_index.Finalize();
2988         m_type_index.Finalize();
2989         m_namespace_index.Finalize();
2990
2991 #if defined (ENABLE_DEBUG_PRINTF)
2992         StreamFile s(stdout, false);
2993         s.Printf ("DWARF index for '%s':",
2994                   GetObjectFile()->GetFileSpec().GetPath().c_str());
2995         s.Printf("\nFunction basenames:\n");    m_function_basename_index.Dump (&s);
2996         s.Printf("\nFunction fullnames:\n");    m_function_fullname_index.Dump (&s);
2997         s.Printf("\nFunction methods:\n");      m_function_method_index.Dump (&s);
2998         s.Printf("\nFunction selectors:\n");    m_function_selector_index.Dump (&s);
2999         s.Printf("\nObjective C class selectors:\n");    m_objc_class_selectors_index.Dump (&s);
3000         s.Printf("\nGlobals and statics:\n");   m_global_index.Dump (&s);
3001         s.Printf("\nTypes:\n");                 m_type_index.Dump (&s);
3002         s.Printf("\nNamepaces:\n");             m_namespace_index.Dump (&s);
3003 #endif
3004     }
3005 }
3006
3007 bool
3008 SymbolFileDWARF::NamespaceDeclMatchesThisSymbolFile (const ClangNamespaceDecl *namespace_decl)
3009 {
3010     if (namespace_decl == NULL)
3011     {
3012         // Invalid namespace decl which means we aren't matching only things
3013         // in this symbol file, so return true to indicate it matches this
3014         // symbol file.
3015         return true;
3016     }
3017
3018     clang::ASTContext *namespace_ast = namespace_decl->GetASTContext();
3019
3020     if (namespace_ast == NULL)
3021         return true;    // No AST in the "namespace_decl", return true since it
3022                         // could then match any symbol file, including this one
3023
3024     if (namespace_ast == GetClangASTContext().getASTContext())
3025         return true;    // The ASTs match, return true
3026
3027     // The namespace AST was valid, and it does not match...
3028     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3029
3030     if (log)
3031         GetObjectFile()->GetModule()->LogMessage(log, "Valid namespace does not match symbol file");
3032
3033     return false;
3034 }
3035
3036 bool
3037 SymbolFileDWARF::DIEIsInNamespace (const ClangNamespaceDecl *namespace_decl,
3038                                    DWARFCompileUnit* cu,
3039                                    const DWARFDebugInfoEntry* die)
3040 {
3041     // No namespace specified, so the answesr i
3042     if (namespace_decl == NULL)
3043         return true;
3044
3045     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3046
3047     const DWARFDebugInfoEntry *decl_ctx_die = NULL;
3048     clang::DeclContext *die_clang_decl_ctx = GetClangDeclContextContainingDIE (cu, die, &decl_ctx_die);
3049     if (decl_ctx_die)
3050     {
3051         clang::NamespaceDecl *clang_namespace_decl = namespace_decl->GetNamespaceDecl();
3052
3053         if (clang_namespace_decl)
3054         {
3055             if (decl_ctx_die->Tag() != DW_TAG_namespace)
3056             {
3057                 if (log)
3058                     GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent is not a namespace");
3059                 return false;
3060             }
3061
3062             if (clang_namespace_decl == die_clang_decl_ctx)
3063                 return true;
3064             else
3065                 return false;
3066         }
3067         else
3068         {
3069             // We have a namespace_decl that was not NULL but it contained
3070             // a NULL "clang::NamespaceDecl", so this means the global namespace
3071             // So as long the the contained decl context DIE isn't a namespace
3072             // we should be ok.
3073             if (decl_ctx_die->Tag() != DW_TAG_namespace)
3074                 return true;
3075         }
3076     }
3077
3078     if (log)
3079         GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent doesn't exist");
3080
3081     return false;
3082 }
3083 uint32_t
3084 SymbolFileDWARF::FindGlobalVariables (const ConstString &name, const lldb_private::ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables)
3085 {
3086     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3087
3088     if (log)
3089     {
3090         GetObjectFile()->GetModule()->LogMessage (log,
3091                                                   "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables)",
3092                                                   name.GetCString(),
3093                                                   namespace_decl,
3094                                                   append,
3095                                                   max_matches);
3096     }
3097
3098     if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
3099                 return 0;
3100
3101     DWARFDebugInfo* info = DebugInfo();
3102     if (info == NULL)
3103         return 0;
3104
3105     // If we aren't appending the results to this list, then clear the list
3106     if (!append)
3107         variables.Clear();
3108
3109     // Remember how many variables are in the list before we search in case
3110     // we are appending the results to a variable list.
3111     const uint32_t original_size = variables.GetSize();
3112
3113     DIEArray die_offsets;
3114
3115     if (m_using_apple_tables)
3116     {
3117         if (m_apple_names_ap.get())
3118         {
3119             const char *name_cstr = name.GetCString();
3120             const char *base_name_start;
3121             const char *base_name_end = NULL;
3122
3123             if (!CPPLanguageRuntime::StripNamespacesFromVariableName(name_cstr, base_name_start, base_name_end))
3124                 base_name_start = name_cstr;
3125
3126             m_apple_names_ap->FindByName (base_name_start, die_offsets);
3127         }
3128     }
3129     else
3130     {
3131         // Index the DWARF if we haven't already
3132         if (!m_indexed)
3133             Index ();
3134
3135         m_global_index.Find (name, die_offsets);
3136     }
3137
3138     const size_t num_die_matches = die_offsets.size();
3139     if (num_die_matches)
3140     {
3141         SymbolContext sc;
3142         sc.module_sp = m_obj_file->GetModule();
3143         assert (sc.module_sp);
3144
3145         DWARFDebugInfo* debug_info = DebugInfo();
3146         DWARFCompileUnit* dwarf_cu = NULL;
3147         const DWARFDebugInfoEntry* die = NULL;
3148         bool done = false;
3149         for (size_t i=0; i<num_die_matches && !done; ++i)
3150         {
3151             const dw_offset_t die_offset = die_offsets[i];
3152             die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3153
3154             if (die)
3155             {
3156                 switch (die->Tag())
3157                 {
3158                     default:
3159                     case DW_TAG_subprogram:
3160                     case DW_TAG_inlined_subroutine:
3161                     case DW_TAG_try_block:
3162                     case DW_TAG_catch_block:
3163                         break;
3164
3165                     case DW_TAG_variable:
3166                         {
3167                             sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
3168
3169                             if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3170                                 continue;
3171
3172                             ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables);
3173
3174                             if (variables.GetSize() - original_size >= max_matches)
3175                                 done = true;
3176                         }
3177                         break;
3178                 }
3179             }
3180             else
3181             {
3182                 if (m_using_apple_tables)
3183                 {
3184                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')\n",
3185                                                                                die_offset, name.GetCString());
3186                 }
3187             }
3188         }
3189     }
3190
3191     // Return the number of variable that were appended to the list
3192     const uint32_t num_matches = variables.GetSize() - original_size;
3193     if (log && num_matches > 0)
3194     {
3195         GetObjectFile()->GetModule()->LogMessage (log,
3196                                                   "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables) => %u",
3197                                                   name.GetCString(),
3198                                                   namespace_decl,
3199                                                   append,
3200                                                   max_matches,
3201                                                   num_matches);
3202     }
3203     return num_matches;
3204 }
3205
3206 uint32_t
3207 SymbolFileDWARF::FindGlobalVariables(const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables)
3208 {
3209     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3210
3211     if (log)
3212     {
3213         GetObjectFile()->GetModule()->LogMessage (log,
3214                                                   "SymbolFileDWARF::FindGlobalVariables (regex=\"%s\", append=%u, max_matches=%u, variables)",
3215                                                   regex.GetText(),
3216                                                   append,
3217                                                   max_matches);
3218     }
3219
3220     DWARFDebugInfo* info = DebugInfo();
3221     if (info == NULL)
3222         return 0;
3223
3224     // If we aren't appending the results to this list, then clear the list
3225     if (!append)
3226         variables.Clear();
3227
3228     // Remember how many variables are in the list before we search in case
3229     // we are appending the results to a variable list.
3230     const uint32_t original_size = variables.GetSize();
3231
3232     DIEArray die_offsets;
3233
3234     if (m_using_apple_tables)
3235     {
3236         if (m_apple_names_ap.get())
3237         {
3238             DWARFMappedHash::DIEInfoArray hash_data_array;
3239             if (m_apple_names_ap->AppendAllDIEsThatMatchingRegex (regex, hash_data_array))
3240                 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
3241         }
3242     }
3243     else
3244     {
3245         // Index the DWARF if we haven't already
3246         if (!m_indexed)
3247             Index ();
3248
3249         m_global_index.Find (regex, die_offsets);
3250     }
3251
3252     SymbolContext sc;
3253     sc.module_sp = m_obj_file->GetModule();
3254     assert (sc.module_sp);
3255
3256     DWARFCompileUnit* dwarf_cu = NULL;
3257     const DWARFDebugInfoEntry* die = NULL;
3258     const size_t num_matches = die_offsets.size();
3259     if (num_matches)
3260     {
3261         DWARFDebugInfo* debug_info = DebugInfo();
3262         for (size_t i=0; i<num_matches; ++i)
3263         {
3264             const dw_offset_t die_offset = die_offsets[i];
3265             die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3266
3267             if (die)
3268             {
3269                 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
3270
3271                 ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables);
3272
3273                 if (variables.GetSize() - original_size >= max_matches)
3274                     break;
3275             }
3276             else
3277             {
3278                 if (m_using_apple_tables)
3279                 {
3280                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for regex '%s')\n",
3281                                                                                die_offset, regex.GetText());
3282                 }
3283             }
3284         }
3285     }
3286
3287     // Return the number of variable that were appended to the list
3288     return variables.GetSize() - original_size;
3289 }
3290
3291
3292 bool
3293 SymbolFileDWARF::ResolveFunction (dw_offset_t die_offset,
3294                                   DWARFCompileUnit *&dwarf_cu,
3295                                   SymbolContextList& sc_list)
3296 {
3297     const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3298     return ResolveFunction (dwarf_cu, die, sc_list);
3299 }
3300
3301
3302 bool
3303 SymbolFileDWARF::ResolveFunction (DWARFCompileUnit *cu,
3304                                   const DWARFDebugInfoEntry *die,
3305                                   SymbolContextList& sc_list)
3306 {
3307     SymbolContext sc;
3308
3309     if (die == NULL)
3310         return false;
3311
3312     // If we were passed a die that is not a function, just return false...
3313     if (die->Tag() != DW_TAG_subprogram && die->Tag() != DW_TAG_inlined_subroutine)
3314         return false;
3315
3316     const DWARFDebugInfoEntry* inlined_die = NULL;
3317     if (die->Tag() == DW_TAG_inlined_subroutine)
3318     {
3319         inlined_die = die;
3320
3321         while ((die = die->GetParent()) != NULL)
3322         {
3323             if (die->Tag() == DW_TAG_subprogram)
3324                 break;
3325         }
3326     }
3327     assert (die->Tag() == DW_TAG_subprogram);
3328     if (GetFunction (cu, die, sc))
3329     {
3330         Address addr;
3331         // Parse all blocks if needed
3332         if (inlined_die)
3333         {
3334             sc.block = sc.function->GetBlock (true).FindBlockByID (MakeUserID(inlined_die->GetOffset()));
3335             assert (sc.block != NULL);
3336             if (sc.block->GetStartAddress (addr) == false)
3337                 addr.Clear();
3338         }
3339         else
3340         {
3341             sc.block = NULL;
3342             addr = sc.function->GetAddressRange().GetBaseAddress();
3343         }
3344
3345         if (addr.IsValid())
3346         {
3347             sc_list.Append(sc);
3348             return true;
3349         }
3350     }
3351
3352     return false;
3353 }
3354
3355 void
3356 SymbolFileDWARF::FindFunctions (const ConstString &name,
3357                                 const NameToDIE &name_to_die,
3358                                 SymbolContextList& sc_list)
3359 {
3360     DIEArray die_offsets;
3361     if (name_to_die.Find (name, die_offsets))
3362     {
3363         ParseFunctions (die_offsets, sc_list);
3364     }
3365 }
3366
3367
3368 void
3369 SymbolFileDWARF::FindFunctions (const RegularExpression &regex,
3370                                 const NameToDIE &name_to_die,
3371                                 SymbolContextList& sc_list)
3372 {
3373     DIEArray die_offsets;
3374     if (name_to_die.Find (regex, die_offsets))
3375     {
3376         ParseFunctions (die_offsets, sc_list);
3377     }
3378 }
3379
3380
3381 void
3382 SymbolFileDWARF::FindFunctions (const RegularExpression &regex,
3383                                 const DWARFMappedHash::MemoryTable &memory_table,
3384                                 SymbolContextList& sc_list)
3385 {
3386     DIEArray die_offsets;
3387     DWARFMappedHash::DIEInfoArray hash_data_array;
3388     if (memory_table.AppendAllDIEsThatMatchingRegex (regex, hash_data_array))
3389     {
3390         DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
3391         ParseFunctions (die_offsets, sc_list);
3392     }
3393 }
3394
3395 void
3396 SymbolFileDWARF::ParseFunctions (const DIEArray &die_offsets,
3397                                  SymbolContextList& sc_list)
3398 {
3399     const size_t num_matches = die_offsets.size();
3400     if (num_matches)
3401     {
3402         SymbolContext sc;
3403
3404         DWARFCompileUnit* dwarf_cu = NULL;
3405         for (size_t i=0; i<num_matches; ++i)
3406         {
3407             const dw_offset_t die_offset = die_offsets[i];
3408             ResolveFunction (die_offset, dwarf_cu, sc_list);
3409         }
3410     }
3411 }
3412
3413 bool
3414 SymbolFileDWARF::FunctionDieMatchesPartialName (const DWARFDebugInfoEntry* die,
3415                                                 const DWARFCompileUnit *dwarf_cu,
3416                                                 uint32_t name_type_mask,
3417                                                 const char *partial_name,
3418                                                 const char *base_name_start,
3419                                                 const char *base_name_end)
3420 {
3421     // If we are looking only for methods, throw away all the ones that are or aren't in C++ classes:
3422     if (name_type_mask == eFunctionNameTypeMethod || name_type_mask == eFunctionNameTypeBase)
3423     {
3424         clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIEOffset(die->GetOffset());
3425         if (!containing_decl_ctx)
3426             return false;
3427
3428         bool is_cxx_method = DeclKindIsCXXClass(containing_decl_ctx->getDeclKind());
3429
3430         if (name_type_mask == eFunctionNameTypeMethod)
3431         {
3432             if (is_cxx_method == false)
3433                 return false;
3434         }
3435
3436         if (name_type_mask == eFunctionNameTypeBase)
3437         {
3438             if (is_cxx_method == true)
3439                 return false;
3440         }
3441     }
3442
3443     // Now we need to check whether the name we got back for this type matches the extra specifications
3444     // that were in the name we're looking up:
3445     if (base_name_start != partial_name || *base_name_end != '\0')
3446     {
3447         // First see if the stuff to the left matches the full name.  To do that let's see if
3448         // we can pull out the mips linkage name attribute:
3449
3450         Mangled best_name;
3451         DWARFDebugInfoEntry::Attributes attributes;
3452         DWARFFormValue form_value;
3453         die->GetAttributes(this, dwarf_cu, NULL, attributes);
3454         uint32_t idx = attributes.FindAttributeIndex(DW_AT_MIPS_linkage_name);
3455         if (idx == UINT32_MAX)
3456             idx = attributes.FindAttributeIndex(DW_AT_linkage_name);
3457         if (idx != UINT32_MAX)
3458         {
3459             if (attributes.ExtractFormValueAtIndex(this, idx, form_value))
3460             {
3461                 const char *mangled_name = form_value.AsCString(&get_debug_str_data());
3462                 if (mangled_name)
3463                     best_name.SetValue (ConstString(mangled_name), true);
3464             }
3465         }
3466
3467         if (!best_name)
3468         {
3469             idx = attributes.FindAttributeIndex(DW_AT_name);
3470             if (idx != UINT32_MAX && attributes.ExtractFormValueAtIndex(this, idx, form_value))
3471             {
3472                 const char *name = form_value.AsCString(&get_debug_str_data());
3473                 best_name.SetValue (ConstString(name), false);
3474             }
3475         }
3476
3477         if (best_name.GetDemangledName())
3478         {
3479             const char *demangled = best_name.GetDemangledName().GetCString();
3480             if (demangled)
3481             {
3482                 std::string name_no_parens(partial_name, base_name_end - partial_name);
3483                 const char *partial_in_demangled = strstr (demangled, name_no_parens.c_str());
3484                 if (partial_in_demangled == NULL)
3485                     return false;
3486                 else
3487                 {
3488                     // Sort out the case where our name is something like "Process::Destroy" and the match is
3489                     // "SBProcess::Destroy" - that shouldn't be a match.  We should really always match on
3490                     // namespace boundaries...
3491
3492                     if (partial_name[0] == ':'  && partial_name[1] == ':')
3493                     {
3494                         // The partial name was already on a namespace boundary so all matches are good.
3495                         return true;
3496                     }
3497                     else if (partial_in_demangled == demangled)
3498                     {
3499                         // They both start the same, so this is an good match.
3500                         return true;
3501                     }
3502                     else
3503                     {
3504                         if (partial_in_demangled - demangled == 1)
3505                         {
3506                             // Only one character difference, can't be a namespace boundary...
3507                             return false;
3508                         }
3509                         else if (*(partial_in_demangled - 1) == ':' && *(partial_in_demangled - 2) == ':')
3510                         {
3511                             // We are on a namespace boundary, so this is also good.
3512                             return true;
3513                         }
3514                         else
3515                             return false;
3516                     }
3517                 }
3518             }
3519         }
3520     }
3521
3522     return true;
3523 }
3524
3525 uint32_t
3526 SymbolFileDWARF::FindFunctions (const ConstString &name,
3527                                 const lldb_private::ClangNamespaceDecl *namespace_decl,
3528                                 uint32_t name_type_mask,
3529                                 bool include_inlines,
3530                                 bool append,
3531                                 SymbolContextList& sc_list)
3532 {
3533     Timer scoped_timer (__PRETTY_FUNCTION__,
3534                         "SymbolFileDWARF::FindFunctions (name = '%s')",
3535                         name.AsCString());
3536
3537     // eFunctionNameTypeAuto should be pre-resolved by a call to Module::PrepareForFunctionNameLookup()
3538     assert ((name_type_mask & eFunctionNameTypeAuto) == 0);
3539
3540     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3541
3542     if (log)
3543     {
3544         GetObjectFile()->GetModule()->LogMessage (log,
3545                                                   "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list)",
3546                                                   name.GetCString(),
3547                                                   name_type_mask,
3548                                                   append);
3549     }
3550
3551     // If we aren't appending the results to this list, then clear the list
3552     if (!append)
3553         sc_list.Clear();
3554
3555     if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
3556                 return 0;
3557
3558     // If name is empty then we won't find anything.
3559     if (name.IsEmpty())
3560         return 0;
3561
3562     // Remember how many sc_list are in the list before we search in case
3563     // we are appending the results to a variable list.
3564
3565     const char *name_cstr = name.GetCString();
3566
3567     const uint32_t original_size = sc_list.GetSize();
3568
3569     DWARFDebugInfo* info = DebugInfo();
3570     if (info == NULL)
3571         return 0;
3572
3573     DWARFCompileUnit *dwarf_cu = NULL;
3574     std::set<const DWARFDebugInfoEntry *> resolved_dies;
3575     if (m_using_apple_tables)
3576     {
3577         if (m_apple_names_ap.get())
3578         {
3579
3580             DIEArray die_offsets;
3581
3582             uint32_t num_matches = 0;
3583
3584             if (name_type_mask & eFunctionNameTypeFull)
3585             {
3586                 // If they asked for the full name, match what they typed.  At some point we may
3587                 // want to canonicalize this (strip double spaces, etc.  For now, we just add all the
3588                 // dies that we find by exact match.
3589                 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
3590                 for (uint32_t i = 0; i < num_matches; i++)
3591                 {
3592                     const dw_offset_t die_offset = die_offsets[i];
3593                     const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3594                     if (die)
3595                     {
3596                         if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3597                             continue;
3598
3599                         if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3600                             continue;
3601
3602                         if (resolved_dies.find(die) == resolved_dies.end())
3603                         {
3604                             if (ResolveFunction (dwarf_cu, die, sc_list))
3605                                 resolved_dies.insert(die);
3606                         }
3607                     }
3608                     else
3609                     {
3610                         GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3611                                                                                    die_offset, name_cstr);
3612                     }
3613                 }
3614             }
3615
3616             if (name_type_mask & eFunctionNameTypeSelector)
3617             {
3618                 if (namespace_decl && *namespace_decl)
3619                     return 0; // no selectors in namespaces
3620
3621                 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
3622                 // Now make sure these are actually ObjC methods.  In this case we can simply look up the name,
3623                 // and if it is an ObjC method name, we're good.
3624
3625                 for (uint32_t i = 0; i < num_matches; i++)
3626                 {
3627                     const dw_offset_t die_offset = die_offsets[i];
3628                     const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3629                     if (die)
3630                     {
3631                         const char *die_name = die->GetName(this, dwarf_cu);
3632                         if (ObjCLanguageRuntime::IsPossibleObjCMethodName(die_name))
3633                         {
3634                             if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3635                                 continue;
3636
3637                             if (resolved_dies.find(die) == resolved_dies.end())
3638                             {
3639                                 if (ResolveFunction (dwarf_cu, die, sc_list))
3640                                     resolved_dies.insert(die);
3641                             }
3642                         }
3643                     }
3644                     else
3645                     {
3646                         GetObjectFile()->GetModule()->ReportError ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3647                                                                    die_offset, name_cstr);
3648                     }
3649                 }
3650                 die_offsets.clear();
3651             }
3652
3653             if (((name_type_mask & eFunctionNameTypeMethod) && !namespace_decl) || name_type_mask & eFunctionNameTypeBase)
3654             {
3655                 // The apple_names table stores just the "base name" of C++ methods in the table.  So we have to
3656                 // extract the base name, look that up, and if there is any other information in the name we were
3657                 // passed in we have to post-filter based on that.
3658
3659                 // FIXME: Arrange the logic above so that we don't calculate the base name twice:
3660                 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
3661
3662                 for (uint32_t i = 0; i < num_matches; i++)
3663                 {
3664                     const dw_offset_t die_offset = die_offsets[i];
3665                     const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3666                     if (die)
3667                     {
3668                         if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3669                             continue;
3670
3671                         if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3672                             continue;
3673
3674                         // If we get to here, the die is good, and we should add it:
3675                         if (resolved_dies.find(die) == resolved_dies.end())
3676                         if (ResolveFunction (dwarf_cu, die, sc_list))
3677                         {
3678                             bool keep_die = true;
3679                             if ((name_type_mask & (eFunctionNameTypeBase|eFunctionNameTypeMethod)) != (eFunctionNameTypeBase|eFunctionNameTypeMethod))
3680                             {
3681                                 // We are looking for either basenames or methods, so we need to
3682                                 // trim out the ones we won't want by looking at the type
3683                                 SymbolContext sc;
3684                                 if (sc_list.GetLastContext(sc))
3685                                 {
3686                                     if (sc.block)
3687                                     {
3688                                         // We have an inlined function
3689                                     }
3690                                     else if (sc.function)
3691                                     {
3692                                         Type *type = sc.function->GetType();
3693
3694                                         clang::DeclContext* decl_ctx = GetClangDeclContextContainingTypeUID (type->GetID());
3695                                         if (decl_ctx->isRecord())
3696                                         {
3697                                             if (name_type_mask & eFunctionNameTypeBase)
3698                                             {
3699                                                 sc_list.RemoveContextAtIndex(sc_list.GetSize()-1);
3700                                                 keep_die = false;
3701                                             }
3702                                         }
3703                                         else
3704                                         {
3705                                             if (name_type_mask & eFunctionNameTypeMethod)
3706                                             {
3707                                                 sc_list.RemoveContextAtIndex(sc_list.GetSize()-1);
3708                                                 keep_die = false;
3709                                             }
3710                                         }
3711                                     }
3712                                 }
3713                             }
3714                             if (keep_die)
3715                                 resolved_dies.insert(die);
3716                         }
3717                     }
3718                     else
3719                     {
3720                         GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3721                                                                                    die_offset, name_cstr);
3722                     }
3723                 }
3724                 die_offsets.clear();
3725             }
3726         }
3727     }
3728     else
3729     {
3730
3731         // Index the DWARF if we haven't already
3732         if (!m_indexed)
3733             Index ();
3734
3735         if (name_type_mask & eFunctionNameTypeFull)
3736         {
3737             FindFunctions (name, m_function_fullname_index, sc_list);
3738
3739             // Temporary workaround for global/anonymous namespace functions on linux
3740 #if defined (__linux__)
3741             // If we didn't find any functions in the global namespace try
3742             // looking in the basename index but ignore any returned
3743             // functions that have a namespace (ie. mangled names starting with
3744             // '_ZN') but keep functions which have an anonymous namespace
3745             if (sc_list.GetSize() == 0)
3746             {
3747                 SymbolContextList temp_sc_list;
3748                 FindFunctions (name, m_function_basename_index, temp_sc_list);
3749                 if (!namespace_decl)
3750                 {
3751                     SymbolContext sc;
3752                     for (uint32_t i = 0; i < temp_sc_list.GetSize(); i++)
3753                     {
3754                         if (temp_sc_list.GetContextAtIndex(i, sc))
3755                         {
3756                             ConstString mangled_name = sc.GetFunctionName(Mangled::ePreferMangled);
3757                             ConstString demangled_name = sc.GetFunctionName(Mangled::ePreferDemangled);
3758                             if (strncmp(mangled_name.GetCString(), "_ZN", 3) ||
3759                                 !strncmp(demangled_name.GetCString(), "(anonymous namespace)", 21))
3760                             {
3761                                 sc_list.Append(sc);
3762                             }
3763                         }
3764                     }
3765                 }
3766             }
3767 #endif
3768         }
3769         DIEArray die_offsets;
3770         DWARFCompileUnit *dwarf_cu = NULL;
3771
3772         if (name_type_mask & eFunctionNameTypeBase)
3773         {
3774             uint32_t num_base = m_function_basename_index.Find(name, die_offsets);
3775             for (uint32_t i = 0; i < num_base; i++)
3776             {
3777                 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu);
3778                 if (die)
3779                 {
3780                     if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3781                         continue;
3782
3783                     if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3784                         continue;
3785
3786                     // If we get to here, the die is good, and we should add it:
3787                     if (resolved_dies.find(die) == resolved_dies.end())
3788                     {
3789                         if (ResolveFunction (dwarf_cu, die, sc_list))
3790                             resolved_dies.insert(die);
3791                     }
3792                 }
3793             }
3794             die_offsets.clear();
3795         }
3796
3797         if (name_type_mask & eFunctionNameTypeMethod)
3798         {
3799             if (namespace_decl && *namespace_decl)
3800                 return 0; // no methods in namespaces
3801
3802             uint32_t num_base = m_function_method_index.Find(name, die_offsets);
3803             {
3804                 for (uint32_t i = 0; i < num_base; i++)
3805                 {
3806                     const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu);
3807                     if (die)
3808                     {
3809                         if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3810                             continue;
3811
3812                         // If we get to here, the die is good, and we should add it:
3813                         if (resolved_dies.find(die) == resolved_dies.end())
3814                         {
3815                             if (ResolveFunction (dwarf_cu, die, sc_list))
3816                                 resolved_dies.insert(die);
3817                         }
3818                     }
3819                 }
3820             }
3821             die_offsets.clear();
3822         }
3823
3824         if ((name_type_mask & eFunctionNameTypeSelector) && (!namespace_decl || !*namespace_decl))
3825         {
3826             FindFunctions (name, m_function_selector_index, sc_list);
3827         }
3828
3829     }
3830
3831     // Return the number of variable that were appended to the list
3832     const uint32_t num_matches = sc_list.GetSize() - original_size;
3833
3834     if (log && num_matches > 0)
3835     {
3836         GetObjectFile()->GetModule()->LogMessage (log,
3837                                                   "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list) => %u",
3838                                                   name.GetCString(),
3839                                                   name_type_mask,
3840                                                   append,
3841                                                   num_matches);
3842     }
3843     return num_matches;
3844 }
3845
3846 uint32_t
3847 SymbolFileDWARF::FindFunctions(const RegularExpression& regex, bool include_inlines, bool append, SymbolContextList& sc_list)
3848 {
3849     Timer scoped_timer (__PRETTY_FUNCTION__,
3850                         "SymbolFileDWARF::FindFunctions (regex = '%s')",
3851                         regex.GetText());
3852
3853     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3854
3855     if (log)
3856     {
3857         GetObjectFile()->GetModule()->LogMessage (log,
3858                                                   "SymbolFileDWARF::FindFunctions (regex=\"%s\", append=%u, sc_list)",
3859                                                   regex.GetText(),
3860                                                   append);
3861     }
3862
3863
3864     // If we aren't appending the results to this list, then clear the list
3865     if (!append)
3866         sc_list.Clear();
3867
3868     // Remember how many sc_list are in the list before we search in case
3869     // we are appending the results to a variable list.
3870     uint32_t original_size = sc_list.GetSize();
3871
3872     if (m_using_apple_tables)
3873     {
3874         if (m_apple_names_ap.get())
3875             FindFunctions (regex, *m_apple_names_ap, sc_list);
3876     }
3877     else
3878     {
3879         // Index the DWARF if we haven't already
3880         if (!m_indexed)
3881             Index ();
3882
3883         FindFunctions (regex, m_function_basename_index, sc_list);
3884
3885         FindFunctions (regex, m_function_fullname_index, sc_list);
3886     }
3887
3888     // Return the number of variable that were appended to the list
3889     return sc_list.GetSize() - original_size;
3890 }
3891
3892 uint32_t
3893 SymbolFileDWARF::FindTypes (const SymbolContext& sc,
3894                             const ConstString &name,
3895                             const lldb_private::ClangNamespaceDecl *namespace_decl,
3896                             bool append,
3897                             uint32_t max_matches,
3898                             TypeList& types)
3899 {
3900     DWARFDebugInfo* info = DebugInfo();
3901     if (info == NULL)
3902         return 0;
3903
3904     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3905
3906     if (log)
3907     {
3908         if (namespace_decl)
3909         {
3910             GetObjectFile()->GetModule()->LogMessage (log,
3911                                                       "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list)",
3912                                                       name.GetCString(),
3913                                                       namespace_decl->GetNamespaceDecl(),
3914                                                       namespace_decl->GetQualifiedName().c_str(),
3915                                                       append,
3916                                                       max_matches);
3917         }
3918         else
3919         {
3920             GetObjectFile()->GetModule()->LogMessage (log,
3921                                                       "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list)",
3922                                                       name.GetCString(),
3923                                                       append,
3924                                                       max_matches);
3925         }
3926     }
3927
3928     // If we aren't appending the results to this list, then clear the list
3929     if (!append)
3930         types.Clear();
3931
3932     if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
3933                 return 0;
3934
3935     DIEArray die_offsets;
3936
3937     if (m_using_apple_tables)
3938     {
3939         if (m_apple_types_ap.get())
3940         {
3941             const char *name_cstr = name.GetCString();
3942             m_apple_types_ap->FindByName (name_cstr, die_offsets);
3943         }
3944     }
3945     else
3946     {
3947         if (!m_indexed)
3948             Index ();
3949
3950         m_type_index.Find (name, die_offsets);
3951     }
3952
3953     const size_t num_die_matches = die_offsets.size();
3954
3955     if (num_die_matches)
3956     {
3957         const uint32_t initial_types_size = types.GetSize();
3958         DWARFCompileUnit* dwarf_cu = NULL;
3959         const DWARFDebugInfoEntry* die = NULL;
3960         DWARFDebugInfo* debug_info = DebugInfo();
3961         for (size_t i=0; i<num_die_matches; ++i)
3962         {
3963             const dw_offset_t die_offset = die_offsets[i];
3964             die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3965
3966             if (die)
3967             {
3968                 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3969                     continue;
3970
3971                 Type *matching_type = ResolveType (dwarf_cu, die);
3972                 if (matching_type)
3973                 {
3974                     // We found a type pointer, now find the shared pointer form our type list
3975                     types.InsertUnique (matching_type->shared_from_this());
3976                     if (types.GetSize() >= max_matches)
3977                         break;
3978                 }
3979             }
3980             else
3981             {
3982                 if (m_using_apple_tables)
3983                 {
3984                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
3985                                                                                die_offset, name.GetCString());
3986                 }
3987             }
3988
3989         }
3990         const uint32_t num_matches = types.GetSize() - initial_types_size;
3991         if (log && num_matches)
3992         {
3993             if (namespace_decl)
3994             {
3995                 GetObjectFile()->GetModule()->LogMessage (log,
3996                                                           "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list) => %u",
3997                                                           name.GetCString(),
3998                                                           namespace_decl->GetNamespaceDecl(),
3999                                                           namespace_decl->GetQualifiedName().c_str(),
4000                                                           append,
4001                                                           max_matches,
4002                                                           num_matches);
4003             }
4004             else
4005             {
4006                 GetObjectFile()->GetModule()->LogMessage (log,
4007                                                           "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list) => %u",
4008                                                           name.GetCString(),
4009                                                           append,
4010                                                           max_matches,
4011                                                           num_matches);
4012             }
4013         }
4014         return num_matches;
4015     }
4016     return 0;
4017 }
4018
4019
4020 ClangNamespaceDecl
4021 SymbolFileDWARF::FindNamespace (const SymbolContext& sc,
4022                                 const ConstString &name,
4023                                 const lldb_private::ClangNamespaceDecl *parent_namespace_decl)
4024 {
4025     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
4026
4027     if (log)
4028     {
4029         GetObjectFile()->GetModule()->LogMessage (log,
4030                                                   "SymbolFileDWARF::FindNamespace (sc, name=\"%s\")",
4031                                                   name.GetCString());
4032     }
4033
4034     if (!NamespaceDeclMatchesThisSymbolFile(parent_namespace_decl))
4035                 return ClangNamespaceDecl();
4036
4037     ClangNamespaceDecl namespace_decl;
4038     DWARFDebugInfo* info = DebugInfo();
4039     if (info)
4040     {
4041         DIEArray die_offsets;
4042
4043         // Index if we already haven't to make sure the compile units
4044         // get indexed and make their global DIE index list
4045         if (m_using_apple_tables)
4046         {
4047             if (m_apple_namespaces_ap.get())
4048             {
4049                 const char *name_cstr = name.GetCString();
4050                 m_apple_namespaces_ap->FindByName (name_cstr, die_offsets);
4051             }
4052         }
4053         else
4054         {
4055             if (!m_indexed)
4056                 Index ();
4057
4058             m_namespace_index.Find (name, die_offsets);
4059         }
4060
4061         DWARFCompileUnit* dwarf_cu = NULL;
4062         const DWARFDebugInfoEntry* die = NULL;
4063         const size_t num_matches = die_offsets.size();
4064         if (num_matches)
4065         {
4066             DWARFDebugInfo* debug_info = DebugInfo();
4067             for (size_t i=0; i<num_matches; ++i)
4068             {
4069                 const dw_offset_t die_offset = die_offsets[i];
4070                 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
4071
4072                 if (die)
4073                 {
4074                     if (parent_namespace_decl && !DIEIsInNamespace (parent_namespace_decl, dwarf_cu, die))
4075                         continue;
4076
4077                     clang::NamespaceDecl *clang_namespace_decl = ResolveNamespaceDIE (dwarf_cu, die);
4078                     if (clang_namespace_decl)
4079                     {
4080                         namespace_decl.SetASTContext (GetClangASTContext().getASTContext());
4081                         namespace_decl.SetNamespaceDecl (clang_namespace_decl);
4082                         break;
4083                     }
4084                 }
4085                 else
4086                 {
4087                     if (m_using_apple_tables)
4088                     {
4089                         GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_namespaces accelerator table had bad die 0x%8.8x for '%s')\n",
4090                                                                    die_offset, name.GetCString());
4091                     }
4092                 }
4093
4094             }
4095         }
4096     }
4097     if (log && namespace_decl.GetNamespaceDecl())
4098     {
4099         GetObjectFile()->GetModule()->LogMessage (log,
4100                                                   "SymbolFileDWARF::FindNamespace (sc, name=\"%s\") => clang::NamespaceDecl(%p) \"%s\"",
4101                                                   name.GetCString(),
4102                                                   namespace_decl.GetNamespaceDecl(),
4103                                                   namespace_decl.GetQualifiedName().c_str());
4104     }
4105
4106     return namespace_decl;
4107 }
4108
4109 uint32_t
4110 SymbolFileDWARF::FindTypes(std::vector<dw_offset_t> die_offsets, uint32_t max_matches, TypeList& types)
4111 {
4112     // Remember how many sc_list are in the list before we search in case
4113     // we are appending the results to a variable list.
4114     uint32_t original_size = types.GetSize();
4115
4116     const uint32_t num_die_offsets = die_offsets.size();
4117     // Parse all of the types we found from the pubtypes matches
4118     uint32_t i;
4119     uint32_t num_matches = 0;
4120     for (i = 0; i < num_die_offsets; ++i)
4121     {
4122         Type *matching_type = ResolveTypeUID (die_offsets[i]);
4123         if (matching_type)
4124         {
4125             // We found a type pointer, now find the shared pointer form our type list
4126             types.InsertUnique (matching_type->shared_from_this());
4127             ++num_matches;
4128             if (num_matches >= max_matches)
4129                 break;
4130         }
4131     }
4132
4133     // Return the number of variable that were appended to the list
4134     return types.GetSize() - original_size;
4135 }
4136
4137
4138 size_t
4139 SymbolFileDWARF::ParseChildParameters (const SymbolContext& sc,
4140                                        clang::DeclContext *containing_decl_ctx,
4141                                        DWARFCompileUnit* dwarf_cu,
4142                                        const DWARFDebugInfoEntry *parent_die,
4143                                        bool skip_artificial,
4144                                        bool &is_static,
4145                                        TypeList* type_list,
4146                                        std::vector<ClangASTType>& function_param_types,
4147                                        std::vector<clang::ParmVarDecl*>& function_param_decls,
4148                                        unsigned &type_quals,
4149                                        ClangASTContext::TemplateParameterInfos &template_param_infos)
4150 {
4151     if (parent_die == NULL)
4152         return 0;
4153
4154     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
4155
4156     size_t arg_idx = 0;
4157     const DWARFDebugInfoEntry *die;
4158     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
4159     {
4160         dw_tag_t tag = die->Tag();
4161         switch (tag)
4162         {
4163         case DW_TAG_formal_parameter:
4164             {
4165                 DWARFDebugInfoEntry::Attributes attributes;
4166                 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
4167                 if (num_attributes > 0)
4168                 {
4169                     const char *name = NULL;
4170                     Declaration decl;
4171                     dw_offset_t param_type_die_offset = DW_INVALID_OFFSET;
4172                     bool is_artificial = false;
4173                     // one of None, Auto, Register, Extern, Static, PrivateExtern
4174
4175                     clang::StorageClass storage = clang::SC_None;
4176                     uint32_t i;
4177                     for (i=0; i<num_attributes; ++i)
4178                     {
4179                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
4180                         DWARFFormValue form_value;
4181                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
4182                         {
4183                             switch (attr)
4184                             {
4185                             case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
4186                             case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
4187                             case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
4188                             case DW_AT_name:        name = form_value.AsCString(&get_debug_str_data()); break;
4189                             case DW_AT_type:        param_type_die_offset = form_value.Reference(dwarf_cu); break;
4190                             case DW_AT_artificial:  is_artificial = form_value.Boolean(); break;
4191                             case DW_AT_location:
4192     //                          if (form_value.BlockData())
4193     //                          {
4194     //                              const DataExtractor& debug_info_data = debug_info();
4195     //                              uint32_t block_length = form_value.Unsigned();
4196     //                              DataExtractor location(debug_info_data, form_value.BlockData() - debug_info_data.GetDataStart(), block_length);
4197     //                          }
4198     //                          else
4199     //                          {
4200     //                          }
4201     //                          break;
4202                             case DW_AT_const_value:
4203                             case DW_AT_default_value:
4204                             case DW_AT_description:
4205                             case DW_AT_endianity:
4206                             case DW_AT_is_optional:
4207                             case DW_AT_segment:
4208                             case DW_AT_variable_parameter:
4209                             default:
4210                             case DW_AT_abstract_origin:
4211                             case DW_AT_sibling:
4212                                 break;
4213                             }
4214                         }
4215                     }
4216
4217                     bool skip = false;
4218                     if (skip_artificial)
4219                     {
4220                         if (is_artificial)
4221                         {
4222                             // In order to determine if a C++ member function is
4223                             // "const" we have to look at the const-ness of "this"...
4224                             // Ugly, but that
4225                             if (arg_idx == 0)
4226                             {
4227                                 if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind()))
4228                                 {
4229                                     // Often times compilers omit the "this" name for the
4230                                     // specification DIEs, so we can't rely upon the name
4231                                     // being in the formal parameter DIE...
4232                                     if (name == NULL || ::strcmp(name, "this")==0)
4233                                     {
4234                                         Type *this_type = ResolveTypeUID (param_type_die_offset);
4235                                         if (this_type)
4236                                         {
4237                                             uint32_t encoding_mask = this_type->GetEncodingMask();
4238                                             if (encoding_mask & Type::eEncodingIsPointerUID)
4239                                             {
4240                                                 is_static = false;
4241
4242                                                 if (encoding_mask & (1u << Type::eEncodingIsConstUID))
4243                                                     type_quals |= clang::Qualifiers::Const;
4244                                                 if (encoding_mask & (1u << Type::eEncodingIsVolatileUID))
4245                                                     type_quals |= clang::Qualifiers::Volatile;
4246                                             }
4247                                         }
4248                                     }
4249                                 }
4250                             }
4251                             skip = true;
4252                         }
4253                         else
4254                         {
4255
4256                             // HACK: Objective C formal parameters "self" and "_cmd"
4257                             // are not marked as artificial in the DWARF...
4258                             CompileUnit *comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
4259                             if (comp_unit)
4260                             {
4261                                 switch (comp_unit->GetLanguage())
4262                                 {
4263                                     case eLanguageTypeObjC:
4264                                     case eLanguageTypeObjC_plus_plus:
4265                                         if (name && name[0] && (strcmp (name, "self") == 0 || strcmp (name, "_cmd") == 0))
4266                                             skip = true;
4267                                         break;
4268                                     default:
4269                                         break;
4270                                 }
4271                             }
4272                         }
4273                     }
4274
4275                     if (!skip)
4276                     {
4277                         Type *type = ResolveTypeUID(param_type_die_offset);
4278                         if (type)
4279                         {
4280                             function_param_types.push_back (type->GetClangForwardType());
4281
4282                             clang::ParmVarDecl *param_var_decl = GetClangASTContext().CreateParameterDeclaration (name,
4283                                                                                                                   type->GetClangForwardType(),
4284                                                                                                                   storage);
4285                             assert(param_var_decl);
4286                             function_param_decls.push_back(param_var_decl);
4287
4288                             GetClangASTContext().SetMetadataAsUserID (param_var_decl, MakeUserID(die->GetOffset()));
4289                         }
4290                     }
4291                 }
4292                 arg_idx++;
4293             }
4294             break;
4295
4296         case DW_TAG_template_type_parameter:
4297         case DW_TAG_template_value_parameter:
4298             ParseTemplateDIE (dwarf_cu, die,template_param_infos);
4299             break;
4300
4301         default:
4302             break;
4303         }
4304     }
4305     return arg_idx;
4306 }
4307
4308 size_t
4309 SymbolFileDWARF::ParseChildEnumerators
4310 (
4311     const SymbolContext& sc,
4312     lldb_private::ClangASTType &clang_type,
4313     bool is_signed,
4314     uint32_t enumerator_byte_size,
4315     DWARFCompileUnit* dwarf_cu,
4316     const DWARFDebugInfoEntry *parent_die
4317 )
4318 {
4319     if (parent_die == NULL)
4320         return 0;
4321
4322     size_t enumerators_added = 0;
4323     const DWARFDebugInfoEntry *die;
4324     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
4325
4326     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
4327     {
4328         const dw_tag_t tag = die->Tag();
4329         if (tag == DW_TAG_enumerator)
4330         {
4331             DWARFDebugInfoEntry::Attributes attributes;
4332             const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
4333             if (num_child_attributes > 0)
4334             {
4335                 const char *name = NULL;
4336                 bool got_value = false;
4337                 int64_t enum_value = 0;
4338                 Declaration decl;
4339
4340                 uint32_t i;
4341                 for (i=0; i<num_child_attributes; ++i)
4342                 {
4343                     const dw_attr_t attr = attributes.AttributeAtIndex(i);
4344                     DWARFFormValue form_value;
4345                     if (attributes.ExtractFormValueAtIndex(this, i, form_value))
4346                     {
4347                         switch (attr)
4348                         {
4349                         case DW_AT_const_value:
4350                             got_value = true;
4351                             if (is_signed)
4352                                 enum_value = form_value.Signed();
4353                             else
4354                                 enum_value = form_value.Unsigned();
4355                             break;
4356
4357                         case DW_AT_name:
4358                             name = form_value.AsCString(&get_debug_str_data());
4359                             break;
4360
4361                         case DW_AT_description:
4362                         default:
4363                         case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
4364                         case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
4365                         case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
4366                         case DW_AT_sibling:
4367                             break;
4368                         }
4369                     }
4370                 }
4371
4372                 if (name && name[0] && got_value)
4373                 {
4374                     clang_type.AddEnumerationValueToEnumerationType (clang_type.GetEnumerationIntegerType(),
4375                                                                      decl,
4376                                                                      name,
4377                                                                      enum_value,
4378                                                                      enumerator_byte_size * 8);
4379                     ++enumerators_added;
4380                 }
4381             }
4382         }
4383     }
4384     return enumerators_added;
4385 }
4386
4387 void
4388 SymbolFileDWARF::ParseChildArrayInfo
4389 (
4390     const SymbolContext& sc,
4391     DWARFCompileUnit* dwarf_cu,
4392     const DWARFDebugInfoEntry *parent_die,
4393     int64_t& first_index,
4394     std::vector<uint64_t>& element_orders,
4395     uint32_t& byte_stride,
4396     uint32_t& bit_stride
4397 )
4398 {
4399     if (parent_die == NULL)
4400         return;
4401
4402     const DWARFDebugInfoEntry *die;
4403     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
4404     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
4405     {
4406         const dw_tag_t tag = die->Tag();
4407         switch (tag)
4408         {
4409         case DW_TAG_subrange_type:
4410             {
4411                 DWARFDebugInfoEntry::Attributes attributes;
4412                 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
4413                 if (num_child_attributes > 0)
4414                 {
4415                     uint64_t num_elements = 0;
4416                     uint64_t lower_bound = 0;
4417                     uint64_t upper_bound = 0;
4418                     bool upper_bound_valid = false;
4419                     uint32_t i;
4420                     for (i=0; i<num_child_attributes; ++i)
4421                     {
4422                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
4423                         DWARFFormValue form_value;
4424                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
4425                         {
4426                             switch (attr)
4427                             {
4428                             case DW_AT_name:
4429                                 break;
4430
4431                             case DW_AT_count:
4432                                 num_elements = form_value.Unsigned();
4433                                 break;
4434
4435                             case DW_AT_bit_stride:
4436                                 bit_stride = form_value.Unsigned();
4437                                 break;
4438
4439                             case DW_AT_byte_stride:
4440                                 byte_stride = form_value.Unsigned();
4441                                 break;
4442
4443                             case DW_AT_lower_bound:
4444                                 lower_bound = form_value.Unsigned();
4445                                 break;
4446
4447                             case DW_AT_upper_bound:
4448                                 upper_bound_valid = true;
4449                                 upper_bound = form_value.Unsigned();
4450                                 break;
4451
4452                             default:
4453                             case DW_AT_abstract_origin:
4454                             case DW_AT_accessibility:
4455                             case DW_AT_allocated:
4456                             case DW_AT_associated:
4457                             case DW_AT_data_location:
4458                             case DW_AT_declaration:
4459                             case DW_AT_description:
4460                             case DW_AT_sibling:
4461                             case DW_AT_threads_scaled:
4462                             case DW_AT_type:
4463                             case DW_AT_visibility:
4464                                 break;
4465                             }
4466                         }
4467                     }
4468
4469                     if (num_elements == 0)
4470                     {
4471                         if (upper_bound_valid && upper_bound >= lower_bound)
4472                             num_elements = upper_bound - lower_bound + 1;
4473                     }
4474
4475                     element_orders.push_back (num_elements);
4476                 }
4477             }
4478             break;
4479         }
4480     }
4481 }
4482
4483 TypeSP
4484 SymbolFileDWARF::GetTypeForDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry* die)
4485 {
4486     TypeSP type_sp;
4487     if (die != NULL)
4488     {
4489         assert(dwarf_cu != NULL);
4490         Type *type_ptr = m_die_to_type.lookup (die);
4491         if (type_ptr == NULL)
4492         {
4493             CompileUnit* lldb_cu = GetCompUnitForDWARFCompUnit(dwarf_cu);
4494             assert (lldb_cu);
4495             SymbolContext sc(lldb_cu);
4496             type_sp = ParseType(sc, dwarf_cu, die, NULL);
4497         }
4498         else if (type_ptr != DIE_IS_BEING_PARSED)
4499         {
4500             // Grab the existing type from the master types lists
4501             type_sp = type_ptr->shared_from_this();
4502         }
4503
4504     }
4505     return type_sp;
4506 }
4507
4508 clang::DeclContext *
4509 SymbolFileDWARF::GetClangDeclContextContainingDIEOffset (dw_offset_t die_offset)
4510 {
4511     if (die_offset != DW_INVALID_OFFSET)
4512     {
4513         DWARFCompileUnitSP cu_sp;
4514         const DWARFDebugInfoEntry* die = DebugInfo()->GetDIEPtr(die_offset, &cu_sp);
4515         return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL);
4516     }
4517     return NULL;
4518 }
4519
4520 clang::DeclContext *
4521 SymbolFileDWARF::GetClangDeclContextForDIEOffset (const SymbolContext &sc, dw_offset_t die_offset)
4522 {
4523     if (die_offset != DW_INVALID_OFFSET)
4524     {
4525         DWARFDebugInfo* debug_info = DebugInfo();
4526         if (debug_info)
4527         {
4528             DWARFCompileUnitSP cu_sp;
4529             const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(die_offset, &cu_sp);
4530             if (die)
4531                 return GetClangDeclContextForDIE (sc, cu_sp.get(), die);
4532         }
4533     }
4534     return NULL;
4535 }
4536
4537 clang::NamespaceDecl *
4538 SymbolFileDWARF::ResolveNamespaceDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry *die)
4539 {
4540     if (die && die->Tag() == DW_TAG_namespace)
4541     {
4542         // See if we already parsed this namespace DIE and associated it with a
4543         // uniqued namespace declaration
4544         clang::NamespaceDecl *namespace_decl = static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die]);
4545         if (namespace_decl)
4546             return namespace_decl;
4547         else
4548         {
4549             const char *namespace_name = die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL);
4550             clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, NULL);
4551             namespace_decl = GetClangASTContext().GetUniqueNamespaceDeclaration (namespace_name, containing_decl_ctx);
4552             Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
4553             if (log)
4554             {
4555                 if (namespace_name)
4556                 {
4557                     GetObjectFile()->GetModule()->LogMessage (log,
4558                                                               "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace with DW_AT_name(\"%s\") => clang::NamespaceDecl *%p (original = %p)",
4559                                                               GetClangASTContext().getASTContext(),
4560                                                               MakeUserID(die->GetOffset()),
4561                                                               namespace_name,
4562                                                               namespace_decl,
4563                                                               namespace_decl->getOriginalNamespace());
4564                 }
4565                 else
4566                 {
4567                     GetObjectFile()->GetModule()->LogMessage (log,
4568                                                               "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p (original = %p)",
4569                                                               GetClangASTContext().getASTContext(),
4570                                                               MakeUserID(die->GetOffset()),
4571                                                               namespace_decl,
4572                                                               namespace_decl->getOriginalNamespace());
4573                 }
4574             }
4575
4576             if (namespace_decl)
4577                 LinkDeclContextToDIE((clang::DeclContext*)namespace_decl, die);
4578             return namespace_decl;
4579         }
4580     }
4581     return NULL;
4582 }
4583
4584 clang::DeclContext *
4585 SymbolFileDWARF::GetClangDeclContextForDIE (const SymbolContext &sc, DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
4586 {
4587     clang::DeclContext *clang_decl_ctx = GetCachedClangDeclContextForDIE (die);
4588     if (clang_decl_ctx)
4589         return clang_decl_ctx;
4590     // If this DIE has a specification, or an abstract origin, then trace to those.
4591
4592     dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET);
4593     if (die_offset != DW_INVALID_OFFSET)
4594         return GetClangDeclContextForDIEOffset (sc, die_offset);
4595
4596     die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET);
4597     if (die_offset != DW_INVALID_OFFSET)
4598         return GetClangDeclContextForDIEOffset (sc, die_offset);
4599
4600     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
4601     if (log)
4602         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));
4603     // This is the DIE we want.  Parse it, then query our map.
4604     bool assert_not_being_parsed = true;
4605     ResolveTypeUID (cu, die, assert_not_being_parsed);
4606
4607     clang_decl_ctx = GetCachedClangDeclContextForDIE (die);
4608
4609     return clang_decl_ctx;
4610 }
4611
4612 clang::DeclContext *
4613 SymbolFileDWARF::GetClangDeclContextContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die, const DWARFDebugInfoEntry **decl_ctx_die_copy)
4614 {
4615     if (m_clang_tu_decl == NULL)
4616         m_clang_tu_decl = GetClangASTContext().getASTContext()->getTranslationUnitDecl();
4617
4618     const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die);
4619
4620     if (decl_ctx_die_copy)
4621         *decl_ctx_die_copy = decl_ctx_die;
4622
4623     if (decl_ctx_die)
4624     {
4625
4626         DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find (decl_ctx_die);
4627         if (pos != m_die_to_decl_ctx.end())
4628             return pos->second;
4629
4630         switch (decl_ctx_die->Tag())
4631         {
4632         case DW_TAG_compile_unit:
4633             return m_clang_tu_decl;
4634
4635         case DW_TAG_namespace:
4636             return ResolveNamespaceDIE (cu, decl_ctx_die);
4637             break;
4638
4639         case DW_TAG_structure_type:
4640         case DW_TAG_union_type:
4641         case DW_TAG_class_type:
4642             {
4643                 Type* type = ResolveType (cu, decl_ctx_die);
4644                 if (type)
4645                 {
4646                     clang::DeclContext *decl_ctx = type->GetClangForwardType().GetDeclContextForType ();
4647                     if (decl_ctx)
4648                     {
4649                         LinkDeclContextToDIE (decl_ctx, decl_ctx_die);
4650                         if (decl_ctx)
4651                             return decl_ctx;
4652                     }
4653                 }
4654             }
4655             break;
4656
4657         default:
4658             break;
4659         }
4660     }
4661     return m_clang_tu_decl;
4662 }
4663
4664
4665 const DWARFDebugInfoEntry *
4666 SymbolFileDWARF::GetDeclContextDIEContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
4667 {
4668     if (cu && die)
4669     {
4670         const DWARFDebugInfoEntry * const decl_die = die;
4671
4672         while (die != NULL)
4673         {
4674             // If this is the original DIE that we are searching for a declaration
4675             // for, then don't look in the cache as we don't want our own decl
4676             // context to be our decl context...
4677             if (decl_die != die)
4678             {
4679                 switch (die->Tag())
4680                 {
4681                     case DW_TAG_compile_unit:
4682                     case DW_TAG_namespace:
4683                     case DW_TAG_structure_type:
4684                     case DW_TAG_union_type:
4685                     case DW_TAG_class_type:
4686                         return die;
4687
4688                     default:
4689                         break;
4690                 }
4691             }
4692
4693             dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET);
4694             if (die_offset != DW_INVALID_OFFSET)
4695             {
4696                 DWARFCompileUnit *spec_cu = cu;
4697                 const DWARFDebugInfoEntry *spec_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &spec_cu);
4698                 const DWARFDebugInfoEntry *spec_die_decl_ctx_die = GetDeclContextDIEContainingDIE (spec_cu, spec_die);
4699                 if (spec_die_decl_ctx_die)
4700                     return spec_die_decl_ctx_die;
4701             }
4702
4703             die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET);
4704             if (die_offset != DW_INVALID_OFFSET)
4705             {
4706                 DWARFCompileUnit *abs_cu = cu;
4707                 const DWARFDebugInfoEntry *abs_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &abs_cu);
4708                 const DWARFDebugInfoEntry *abs_die_decl_ctx_die = GetDeclContextDIEContainingDIE (abs_cu, abs_die);
4709                 if (abs_die_decl_ctx_die)
4710                     return abs_die_decl_ctx_die;
4711             }
4712
4713             die = die->GetParent();
4714         }
4715     }
4716     return NULL;
4717 }
4718
4719
4720 Symbol *
4721 SymbolFileDWARF::GetObjCClassSymbol (const ConstString &objc_class_name)
4722 {
4723     Symbol *objc_class_symbol = NULL;
4724     if (m_obj_file)
4725     {
4726         Symtab *symtab = m_obj_file->GetSymtab ();
4727         if (symtab)
4728         {
4729             objc_class_symbol = symtab->FindFirstSymbolWithNameAndType (objc_class_name,
4730                                                                         eSymbolTypeObjCClass,
4731                                                                         Symtab::eDebugNo,
4732                                                                         Symtab::eVisibilityAny);
4733         }
4734     }
4735     return objc_class_symbol;
4736 }
4737
4738 // Some compilers don't emit the DW_AT_APPLE_objc_complete_type attribute. If they don't
4739 // then we can end up looking through all class types for a complete type and never find
4740 // the full definition. We need to know if this attribute is supported, so we determine
4741 // this here and cache th result. We also need to worry about the debug map DWARF file
4742 // if we are doing darwin DWARF in .o file debugging.
4743 bool
4744 SymbolFileDWARF::Supports_DW_AT_APPLE_objc_complete_type (DWARFCompileUnit *cu)
4745 {
4746     if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate)
4747     {
4748         m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo;
4749         if (cu && cu->Supports_DW_AT_APPLE_objc_complete_type())
4750             m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes;
4751         else
4752         {
4753             DWARFDebugInfo* debug_info = DebugInfo();
4754             const uint32_t num_compile_units = GetNumCompileUnits();
4755             for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx)
4756             {
4757                 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx);
4758                 if (dwarf_cu != cu && dwarf_cu->Supports_DW_AT_APPLE_objc_complete_type())
4759                 {
4760                     m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes;
4761                     break;
4762                 }
4763             }
4764         }
4765         if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolNo && GetDebugMapSymfile ())
4766             return m_debug_map_symfile->Supports_DW_AT_APPLE_objc_complete_type (this);
4767     }
4768     return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes;
4769 }
4770
4771 // This function can be used when a DIE is found that is a forward declaration
4772 // DIE and we want to try and find a type that has the complete definition.
4773 TypeSP
4774 SymbolFileDWARF::FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die,
4775                                                        const ConstString &type_name,
4776                                                        bool must_be_implementation)
4777 {
4778
4779     TypeSP type_sp;
4780
4781     if (!type_name || (must_be_implementation && !GetObjCClassSymbol (type_name)))
4782         return type_sp;
4783
4784     DIEArray die_offsets;
4785
4786     if (m_using_apple_tables)
4787     {
4788         if (m_apple_types_ap.get())
4789         {
4790             const char *name_cstr = type_name.GetCString();
4791             m_apple_types_ap->FindCompleteObjCClassByName (name_cstr, die_offsets, must_be_implementation);
4792         }
4793     }
4794     else
4795     {
4796         if (!m_indexed)
4797             Index ();
4798
4799         m_type_index.Find (type_name, die_offsets);
4800     }
4801
4802     const size_t num_matches = die_offsets.size();
4803
4804     DWARFCompileUnit* type_cu = NULL;
4805     const DWARFDebugInfoEntry* type_die = NULL;
4806     if (num_matches)
4807     {
4808         DWARFDebugInfo* debug_info = DebugInfo();
4809         for (size_t i=0; i<num_matches; ++i)
4810         {
4811             const dw_offset_t die_offset = die_offsets[i];
4812             type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
4813
4814             if (type_die)
4815             {
4816                 bool try_resolving_type = false;
4817
4818                 // Don't try and resolve the DIE we are looking for with the DIE itself!
4819                 if (type_die != die)
4820                 {
4821                     switch (type_die->Tag())
4822                     {
4823                         case DW_TAG_class_type:
4824                         case DW_TAG_structure_type:
4825                             try_resolving_type = true;
4826                             break;
4827                         default:
4828                             break;
4829                     }
4830                 }
4831
4832                 if (try_resolving_type)
4833                 {
4834                                         if (must_be_implementation && type_cu->Supports_DW_AT_APPLE_objc_complete_type())
4835                             try_resolving_type = type_die->GetAttributeValueAsUnsigned (this, type_cu, DW_AT_APPLE_objc_complete_type, 0);
4836
4837                     if (try_resolving_type)
4838                     {
4839                         Type *resolved_type = ResolveType (type_cu, type_die, false);
4840                         if (resolved_type && resolved_type != DIE_IS_BEING_PARSED)
4841                         {
4842                             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",
4843                                           MakeUserID(die->GetOffset()),
4844                                           MakeUserID(dwarf_cu->GetOffset()),
4845                                           m_obj_file->GetFileSpec().GetFilename().AsCString(),
4846                                           MakeUserID(type_die->GetOffset()),
4847                                           MakeUserID(type_cu->GetOffset()));
4848
4849                             if (die)
4850                                 m_die_to_type[die] = resolved_type;
4851                             type_sp = resolved_type->shared_from_this();
4852                             break;
4853                         }
4854                     }
4855                 }
4856             }
4857             else
4858             {
4859                 if (m_using_apple_tables)
4860                 {
4861                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
4862                                                                die_offset, type_name.GetCString());
4863                 }
4864             }
4865
4866         }
4867     }
4868     return type_sp;
4869 }
4870
4871
4872 //----------------------------------------------------------------------
4873 // This function helps to ensure that the declaration contexts match for
4874 // two different DIEs. Often times debug information will refer to a
4875 // forward declaration of a type (the equivalent of "struct my_struct;".
4876 // There will often be a declaration of that type elsewhere that has the
4877 // full definition. When we go looking for the full type "my_struct", we
4878 // will find one or more matches in the accelerator tables and we will
4879 // then need to make sure the type was in the same declaration context
4880 // as the original DIE. This function can efficiently compare two DIEs
4881 // and will return true when the declaration context matches, and false
4882 // when they don't.
4883 //----------------------------------------------------------------------
4884 bool
4885 SymbolFileDWARF::DIEDeclContextsMatch (DWARFCompileUnit* cu1, const DWARFDebugInfoEntry *die1,
4886                                        DWARFCompileUnit* cu2, const DWARFDebugInfoEntry *die2)
4887 {
4888     if (die1 == die2)
4889         return true;
4890
4891 #if defined (LLDB_CONFIGURATION_DEBUG)
4892     // You can't and shouldn't call this function with a compile unit from
4893     // two different SymbolFileDWARF instances.
4894     assert (DebugInfo()->ContainsCompileUnit (cu1));
4895     assert (DebugInfo()->ContainsCompileUnit (cu2));
4896 #endif
4897
4898     DWARFDIECollection decl_ctx_1;
4899     DWARFDIECollection decl_ctx_2;
4900     //The declaration DIE stack is a stack of the declaration context
4901     // DIEs all the way back to the compile unit. If a type "T" is
4902     // declared inside a class "B", and class "B" is declared inside
4903     // a class "A" and class "A" is in a namespace "lldb", and the
4904     // namespace is in a compile unit, there will be a stack of DIEs:
4905     //
4906     //   [0] DW_TAG_class_type for "B"
4907     //   [1] DW_TAG_class_type for "A"
4908     //   [2] DW_TAG_namespace  for "lldb"
4909     //   [3] DW_TAG_compile_unit for the source file.
4910     //
4911     // We grab both contexts and make sure that everything matches
4912     // all the way back to the compiler unit.
4913
4914     // First lets grab the decl contexts for both DIEs
4915     die1->GetDeclContextDIEs (this, cu1, decl_ctx_1);
4916     die2->GetDeclContextDIEs (this, cu2, decl_ctx_2);
4917     // Make sure the context arrays have the same size, otherwise
4918     // we are done
4919     const size_t count1 = decl_ctx_1.Size();
4920     const size_t count2 = decl_ctx_2.Size();
4921     if (count1 != count2)
4922         return false;
4923
4924     // Make sure the DW_TAG values match all the way back up the the
4925     // compile unit. If they don't, then we are done.
4926     const DWARFDebugInfoEntry *decl_ctx_die1;
4927     const DWARFDebugInfoEntry *decl_ctx_die2;
4928     size_t i;
4929     for (i=0; i<count1; i++)
4930     {
4931         decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i);
4932         decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i);
4933         if (decl_ctx_die1->Tag() != decl_ctx_die2->Tag())
4934             return false;
4935     }
4936 #if defined LLDB_CONFIGURATION_DEBUG
4937
4938     // Make sure the top item in the decl context die array is always
4939     // DW_TAG_compile_unit. If it isn't then something went wrong in
4940     // the DWARFDebugInfoEntry::GetDeclContextDIEs() function...
4941     assert (decl_ctx_1.GetDIEPtrAtIndex (count1 - 1)->Tag() == DW_TAG_compile_unit);
4942
4943 #endif
4944     // Always skip the compile unit when comparing by only iterating up to
4945     // "count - 1". Here we compare the names as we go.
4946     for (i=0; i<count1 - 1; i++)
4947     {
4948         decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i);
4949         decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i);
4950         const char *name1 = decl_ctx_die1->GetName(this, cu1);
4951         const char *name2 = decl_ctx_die2->GetName(this, cu2);
4952         // If the string was from a DW_FORM_strp, then the pointer will often
4953         // be the same!
4954         if (name1 == name2)
4955             continue;
4956
4957         // Name pointers are not equal, so only compare the strings
4958         // if both are not NULL.
4959         if (name1 && name2)
4960         {
4961             // If the strings don't compare, we are done...
4962             if (strcmp(name1, name2) != 0)
4963                 return false;
4964         }
4965         else
4966         {
4967             // One name was NULL while the other wasn't
4968             return false;
4969         }
4970     }
4971     // We made it through all of the checks and the declaration contexts
4972     // are equal.
4973     return true;
4974 }
4975
4976 // This function can be used when a DIE is found that is a forward declaration
4977 // DIE and we want to try and find a type that has the complete definition.
4978 // "cu" and "die" must be from this SymbolFileDWARF
4979 TypeSP
4980 SymbolFileDWARF::FindDefinitionTypeForDIE (DWARFCompileUnit* cu,
4981                                            const DWARFDebugInfoEntry *die,
4982                                            const ConstString &type_name)
4983 {
4984     TypeSP type_sp;
4985
4986 #if defined (LLDB_CONFIGURATION_DEBUG)
4987     // You can't and shouldn't call this function with a compile unit from
4988     // another SymbolFileDWARF instance.
4989     assert (DebugInfo()->ContainsCompileUnit (cu));
4990 #endif
4991
4992     if (cu == NULL || die == NULL || !type_name)
4993         return type_sp;
4994
4995     std::string qualified_name;
4996
4997     Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION|DWARF_LOG_LOOKUPS));
4998     if (log)
4999     {
5000         die->GetQualifiedName(this, cu, qualified_name);
5001         GetObjectFile()->GetModule()->LogMessage (log,
5002                                                   "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x (%s), name='%s')",
5003                                                   die->GetOffset(),
5004                                                   qualified_name.c_str(),
5005                                                   type_name.GetCString());
5006     }
5007
5008     DIEArray die_offsets;
5009
5010     if (m_using_apple_tables)
5011     {
5012         if (m_apple_types_ap.get())
5013         {
5014             const bool has_tag = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeTag);
5015             const bool has_qualified_name_hash = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeQualNameHash);
5016             if (has_tag && has_qualified_name_hash)
5017             {
5018                 if (qualified_name.empty())
5019                     die->GetQualifiedName(this, cu, qualified_name);
5020
5021                 const uint32_t qualified_name_hash = MappedHash::HashStringUsingDJB (qualified_name.c_str());
5022                 if (log)
5023                     GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTagAndQualifiedNameHash()");
5024                 m_apple_types_ap->FindByNameAndTagAndQualifiedNameHash (type_name.GetCString(), die->Tag(), qualified_name_hash, die_offsets);
5025             }
5026             else if (has_tag > 1)
5027             {
5028                 if (log)
5029                     GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTag()");
5030                 m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), die->Tag(), die_offsets);
5031             }
5032             else
5033             {
5034                 m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets);
5035             }
5036         }
5037     }
5038     else
5039     {
5040         if (!m_indexed)
5041             Index ();
5042
5043         m_type_index.Find (type_name, die_offsets);
5044     }
5045
5046     const size_t num_matches = die_offsets.size();
5047
5048     const dw_tag_t die_tag = die->Tag();
5049
5050     DWARFCompileUnit* type_cu = NULL;
5051     const DWARFDebugInfoEntry* type_die = NULL;
5052     if (num_matches)
5053     {
5054         DWARFDebugInfo* debug_info = DebugInfo();
5055         for (size_t i=0; i<num_matches; ++i)
5056         {
5057             const dw_offset_t die_offset = die_offsets[i];
5058             type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
5059
5060             if (type_die)
5061             {
5062                 bool try_resolving_type = false;
5063
5064                 // Don't try and resolve the DIE we are looking for with the DIE itself!
5065                 if (type_die != die)
5066                 {
5067                     const dw_tag_t type_die_tag = type_die->Tag();
5068                     // Make sure the tags match
5069                     if (type_die_tag == die_tag)
5070                     {
5071                         // The tags match, lets try resolving this type
5072                         try_resolving_type = true;
5073                     }
5074                     else
5075                     {
5076                         // The tags don't match, but we need to watch our for a
5077                         // forward declaration for a struct and ("struct foo")
5078                         // ends up being a class ("class foo { ... };") or
5079                         // vice versa.
5080                         switch (type_die_tag)
5081                         {
5082                         case DW_TAG_class_type:
5083                             // We had a "class foo", see if we ended up with a "struct foo { ... };"
5084                             try_resolving_type = (die_tag == DW_TAG_structure_type);
5085                             break;
5086                         case DW_TAG_structure_type:
5087                             // We had a "struct foo", see if we ended up with a "class foo { ... };"
5088                             try_resolving_type = (die_tag == DW_TAG_class_type);
5089                             break;
5090                         default:
5091                             // Tags don't match, don't event try to resolve
5092                             // using this type whose name matches....
5093                             break;
5094                         }
5095                     }
5096                 }
5097
5098                 if (try_resolving_type)
5099                 {
5100                     if (log)
5101                     {
5102                         std::string qualified_name;
5103                         type_die->GetQualifiedName(this, cu, qualified_name);
5104                         GetObjectFile()->GetModule()->LogMessage (log,
5105                                                                   "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x, name='%s') trying die=0x%8.8x (%s)",
5106                                                                   die->GetOffset(),
5107                                                                   type_name.GetCString(),
5108                                                                   type_die->GetOffset(),
5109                                                                   qualified_name.c_str());
5110                     }
5111
5112                     // Make sure the decl contexts match all the way up
5113                     if (DIEDeclContextsMatch(cu, die, type_cu, type_die))
5114                     {
5115                         Type *resolved_type = ResolveType (type_cu, type_die, false);
5116                         if (resolved_type && resolved_type != DIE_IS_BEING_PARSED)
5117                         {
5118                             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",
5119                                           MakeUserID(die->GetOffset()),
5120                                           MakeUserID(dwarf_cu->GetOffset()),
5121                                           m_obj_file->GetFileSpec().GetFilename().AsCString(),
5122                                           MakeUserID(type_die->GetOffset()),
5123                                           MakeUserID(type_cu->GetOffset()));
5124
5125                             m_die_to_type[die] = resolved_type;
5126                             type_sp = resolved_type->shared_from_this();
5127                             break;
5128                         }
5129                     }
5130                 }
5131                 else
5132                 {
5133                     if (log)
5134                     {
5135                         std::string qualified_name;
5136                         type_die->GetQualifiedName(this, cu, qualified_name);
5137                         GetObjectFile()->GetModule()->LogMessage (log,
5138                                                                   "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x, name='%s') ignoring die=0x%8.8x (%s)",
5139                                                                   die->GetOffset(),
5140                                                                   type_name.GetCString(),
5141                                                                   type_die->GetOffset(),
5142                                                                   qualified_name.c_str());
5143                     }
5144                 }
5145             }
5146             else
5147             {
5148                 if (m_using_apple_tables)
5149                 {
5150                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
5151                                                                                die_offset, type_name.GetCString());
5152                 }
5153             }
5154
5155         }
5156     }
5157     return type_sp;
5158 }
5159
5160 TypeSP
5161 SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &dwarf_decl_ctx)
5162 {
5163     TypeSP type_sp;
5164
5165     const uint32_t dwarf_decl_ctx_count = dwarf_decl_ctx.GetSize();
5166     if (dwarf_decl_ctx_count > 0)
5167     {
5168         const ConstString type_name(dwarf_decl_ctx[0].name);
5169         const dw_tag_t tag = dwarf_decl_ctx[0].tag;
5170
5171         if (type_name)
5172         {
5173             Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION|DWARF_LOG_LOOKUPS));
5174             if (log)
5175             {
5176                 GetObjectFile()->GetModule()->LogMessage (log,
5177                                                           "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s')",
5178                                                           DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
5179                                                           dwarf_decl_ctx.GetQualifiedName());
5180             }
5181
5182             DIEArray die_offsets;
5183
5184             if (m_using_apple_tables)
5185             {
5186                 if (m_apple_types_ap.get())
5187                 {
5188                     const bool has_tag = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeTag);
5189                     const bool has_qualified_name_hash = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeQualNameHash);
5190                     if (has_tag && has_qualified_name_hash)
5191                     {
5192                         const char *qualified_name = dwarf_decl_ctx.GetQualifiedName();
5193                         const uint32_t qualified_name_hash = MappedHash::HashStringUsingDJB (qualified_name);
5194                         if (log)
5195                             GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTagAndQualifiedNameHash()");
5196                         m_apple_types_ap->FindByNameAndTagAndQualifiedNameHash (type_name.GetCString(), tag, qualified_name_hash, die_offsets);
5197                     }
5198                     else if (has_tag)
5199                     {
5200                         if (log)
5201                             GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTag()");
5202                         m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), tag, die_offsets);
5203                     }
5204                     else
5205                     {
5206                         m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets);
5207                     }
5208                 }
5209             }
5210             else
5211             {
5212                 if (!m_indexed)
5213                     Index ();
5214
5215                 m_type_index.Find (type_name, die_offsets);
5216             }
5217
5218             const size_t num_matches = die_offsets.size();
5219
5220
5221             DWARFCompileUnit* type_cu = NULL;
5222             const DWARFDebugInfoEntry* type_die = NULL;
5223             if (num_matches)
5224             {
5225                 DWARFDebugInfo* debug_info = DebugInfo();
5226                 for (size_t i=0; i<num_matches; ++i)
5227                 {
5228                     const dw_offset_t die_offset = die_offsets[i];
5229                     type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
5230
5231                     if (type_die)
5232                     {
5233                         bool try_resolving_type = false;
5234
5235                         // Don't try and resolve the DIE we are looking for with the DIE itself!
5236                         const dw_tag_t type_tag = type_die->Tag();
5237                         // Make sure the tags match
5238                         if (type_tag == tag)
5239                         {
5240                             // The tags match, lets try resolving this type
5241                             try_resolving_type = true;
5242                         }
5243                         else
5244                         {
5245                             // The tags don't match, but we need to watch our for a
5246                             // forward declaration for a struct and ("struct foo")
5247                             // ends up being a class ("class foo { ... };") or
5248                             // vice versa.
5249                             switch (type_tag)
5250                             {
5251                                 case DW_TAG_class_type:
5252                                     // We had a "class foo", see if we ended up with a "struct foo { ... };"
5253                                     try_resolving_type = (tag == DW_TAG_structure_type);
5254                                     break;
5255                                 case DW_TAG_structure_type:
5256                                     // We had a "struct foo", see if we ended up with a "class foo { ... };"
5257                                     try_resolving_type = (tag == DW_TAG_class_type);
5258                                     break;
5259                                 default:
5260                                     // Tags don't match, don't event try to resolve
5261                                     // using this type whose name matches....
5262                                     break;
5263                             }
5264                         }
5265
5266                         if (try_resolving_type)
5267                         {
5268                             DWARFDeclContext type_dwarf_decl_ctx;
5269                             type_die->GetDWARFDeclContext (this, type_cu, type_dwarf_decl_ctx);
5270
5271                             if (log)
5272                             {
5273                                 GetObjectFile()->GetModule()->LogMessage (log,
5274                                                                           "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') trying die=0x%8.8x (%s)",
5275                                                                           DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
5276                                                                           dwarf_decl_ctx.GetQualifiedName(),
5277                                                                           type_die->GetOffset(),
5278                                                                           type_dwarf_decl_ctx.GetQualifiedName());
5279                             }
5280
5281                             // Make sure the decl contexts match all the way up
5282                             if (dwarf_decl_ctx == type_dwarf_decl_ctx)
5283                             {
5284                                 Type *resolved_type = ResolveType (type_cu, type_die, false);
5285                                 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED)
5286                                 {
5287                                     type_sp = resolved_type->shared_from_this();
5288                                     break;
5289                                 }
5290                             }
5291                         }
5292                         else
5293                         {
5294                             if (log)
5295                             {
5296                                 std::string qualified_name;
5297                                 type_die->GetQualifiedName(this, type_cu, qualified_name);
5298                                 GetObjectFile()->GetModule()->LogMessage (log,
5299                                                                           "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') ignoring die=0x%8.8x (%s)",
5300                                                                           DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
5301                                                                           dwarf_decl_ctx.GetQualifiedName(),
5302                                                                           type_die->GetOffset(),
5303                                                                           qualified_name.c_str());
5304                             }
5305                         }
5306                     }
5307                     else
5308                     {
5309                         if (m_using_apple_tables)
5310                         {
5311                             GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
5312                                                                                        die_offset, type_name.GetCString());
5313                         }
5314                     }
5315
5316                 }
5317             }
5318         }
5319     }
5320     return type_sp;
5321 }
5322
5323 bool
5324 SymbolFileDWARF::CopyUniqueClassMethodTypes (SymbolFileDWARF *src_symfile,
5325                                              Type *class_type,
5326                                              DWARFCompileUnit* src_cu,
5327                                              const DWARFDebugInfoEntry *src_class_die,
5328                                              DWARFCompileUnit* dst_cu,
5329                                              const DWARFDebugInfoEntry *dst_class_die,
5330                                              llvm::SmallVectorImpl <const DWARFDebugInfoEntry *> &failures)
5331 {
5332     if (!class_type || !src_cu || !src_class_die || !dst_cu || !dst_class_die)
5333         return false;
5334     if (src_class_die->Tag() != dst_class_die->Tag())
5335         return false;
5336
5337     // We need to complete the class type so we can get all of the method types
5338     // parsed so we can then unique those types to their equivalent counterparts
5339     // in "dst_cu" and "dst_class_die"
5340     class_type->GetClangFullType();
5341
5342     const DWARFDebugInfoEntry *src_die;
5343     const DWARFDebugInfoEntry *dst_die;
5344     UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die;
5345     UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die;
5346     UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die_artificial;
5347     UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die_artificial;
5348     for (src_die = src_class_die->GetFirstChild(); src_die != NULL; src_die = src_die->GetSibling())
5349     {
5350         if (src_die->Tag() == DW_TAG_subprogram)
5351         {
5352             // Make sure this is a declaration and not a concrete instance by looking
5353             // for DW_AT_declaration set to 1. Sometimes concrete function instances
5354             // are placed inside the class definitions and shouldn't be included in
5355             // the list of things are are tracking here.
5356             if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_declaration, 0) == 1)
5357             {
5358                 const char *src_name = src_die->GetMangledName (src_symfile, src_cu);
5359                 if (src_name)
5360                 {
5361                     ConstString src_const_name(src_name);
5362                     if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_artificial, 0))
5363                         src_name_to_die_artificial.Append(src_const_name.GetCString(), src_die);
5364                     else
5365                         src_name_to_die.Append(src_const_name.GetCString(), src_die);
5366                 }
5367             }
5368         }
5369     }
5370     for (dst_die = dst_class_die->GetFirstChild(); dst_die != NULL; dst_die = dst_die->GetSibling())
5371     {
5372         if (dst_die->Tag() == DW_TAG_subprogram)
5373         {
5374             // Make sure this is a declaration and not a concrete instance by looking
5375             // for DW_AT_declaration set to 1. Sometimes concrete function instances
5376             // are placed inside the class definitions and shouldn't be included in
5377             // the list of things are are tracking here.
5378             if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_declaration, 0) == 1)
5379             {
5380                 const char *dst_name = dst_die->GetMangledName (this, dst_cu);
5381                 if (dst_name)
5382                 {
5383                     ConstString dst_const_name(dst_name);
5384                     if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_artificial, 0))
5385                         dst_name_to_die_artificial.Append(dst_const_name.GetCString(), dst_die);
5386                     else
5387                         dst_name_to_die.Append(dst_const_name.GetCString(), dst_die);
5388                 }
5389             }
5390         }
5391     }
5392     const uint32_t src_size = src_name_to_die.GetSize ();
5393     const uint32_t dst_size = dst_name_to_die.GetSize ();
5394     Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | DWARF_LOG_TYPE_COMPLETION));
5395
5396     // Is everything kosher so we can go through the members at top speed?
5397     bool fast_path = true;
5398
5399     if (src_size != dst_size)
5400     {
5401         if (src_size != 0 && dst_size != 0)
5402         {
5403             if (log)
5404                 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)",
5405                             src_class_die->GetOffset(),
5406                             dst_class_die->GetOffset(),
5407                             src_size,
5408                             dst_size);
5409         }
5410
5411         fast_path = false;
5412     }
5413
5414     uint32_t idx;
5415
5416     if (fast_path)
5417     {
5418         for (idx = 0; idx < src_size; ++idx)
5419         {
5420             src_die = src_name_to_die.GetValueAtIndexUnchecked (idx);
5421             dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx);
5422
5423             if (src_die->Tag() != dst_die->Tag())
5424             {
5425                 if (log)
5426                     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)",
5427                                 src_class_die->GetOffset(),
5428                                 dst_class_die->GetOffset(),
5429                                 src_die->GetOffset(),
5430                                 DW_TAG_value_to_name(src_die->Tag()),
5431                                 dst_die->GetOffset(),
5432                                 DW_TAG_value_to_name(src_die->Tag()));
5433                 fast_path = false;
5434             }
5435
5436             const char *src_name = src_die->GetMangledName (src_symfile, src_cu);
5437             const char *dst_name = dst_die->GetMangledName (this, dst_cu);
5438
5439             // Make sure the names match
5440             if (src_name == dst_name || (strcmp (src_name, dst_name) == 0))
5441                 continue;
5442
5443             if (log)
5444                 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)",
5445                             src_class_die->GetOffset(),
5446                             dst_class_die->GetOffset(),
5447                             src_die->GetOffset(),
5448                             src_name,
5449                             dst_die->GetOffset(),
5450                             dst_name);
5451
5452             fast_path = false;
5453         }
5454     }
5455
5456     // Now do the work of linking the DeclContexts and Types.
5457     if (fast_path)
5458     {
5459         // We can do this quickly.  Just run across the tables index-for-index since
5460         // we know each node has matching names and tags.
5461         for (idx = 0; idx < src_size; ++idx)
5462         {
5463             src_die = src_name_to_die.GetValueAtIndexUnchecked (idx);
5464             dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx);
5465
5466             clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die];
5467             if (src_decl_ctx)
5468             {
5469                 if (log)
5470                     log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", src_decl_ctx, src_die->GetOffset(), dst_die->GetOffset());
5471                 LinkDeclContextToDIE (src_decl_ctx, dst_die);
5472             }
5473             else
5474             {
5475                 if (log)
5476                     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());
5477             }
5478
5479             Type *src_child_type = m_die_to_type[src_die];
5480             if (src_child_type)
5481             {
5482                 if (log)
5483                     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());
5484                 m_die_to_type[dst_die] = src_child_type;
5485             }
5486             else
5487             {
5488                 if (log)
5489                     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());
5490             }
5491         }
5492     }
5493     else
5494     {
5495         // We must do this slowly.  For each member of the destination, look
5496         // up a member in the source with the same name, check its tag, and
5497         // unique them if everything matches up.  Report failures.
5498
5499         if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty())
5500         {
5501             src_name_to_die.Sort();
5502
5503             for (idx = 0; idx < dst_size; ++idx)
5504             {
5505                 const char *dst_name = dst_name_to_die.GetCStringAtIndex(idx);
5506                 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
5507                 src_die = src_name_to_die.Find(dst_name, NULL);
5508
5509                 if (src_die && (src_die->Tag() == dst_die->Tag()))
5510                 {
5511                     clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die];
5512                     if (src_decl_ctx)
5513                     {
5514                         if (log)
5515                             log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", src_decl_ctx, src_die->GetOffset(), dst_die->GetOffset());
5516                         LinkDeclContextToDIE (src_decl_ctx, dst_die);
5517                     }
5518                     else
5519                     {
5520                         if (log)
5521                             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());
5522                     }
5523
5524                     Type *src_child_type = m_die_to_type[src_die];
5525                     if (src_child_type)
5526                     {
5527                         if (log)
5528                             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());
5529                         m_die_to_type[dst_die] = src_child_type;
5530                     }
5531                     else
5532                     {
5533                         if (log)
5534                             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());
5535                     }
5536                 }
5537                 else
5538                 {
5539                     if (log)
5540                         log->Printf ("warning: couldn't find a match for 0x%8.8x", dst_die->GetOffset());
5541
5542                     failures.push_back(dst_die);
5543                 }
5544             }
5545         }
5546     }
5547
5548     const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize ();
5549     const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize ();
5550
5551     UniqueCStringMap<const DWARFDebugInfoEntry *> name_to_die_artificial_not_in_src;
5552
5553     if (src_size_artificial && dst_size_artificial)
5554     {
5555         dst_name_to_die_artificial.Sort();
5556
5557         for (idx = 0; idx < src_size_artificial; ++idx)
5558         {
5559             const char *src_name_artificial = src_name_to_die_artificial.GetCStringAtIndex(idx);
5560             src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked (idx);
5561             dst_die = dst_name_to_die_artificial.Find(src_name_artificial, NULL);
5562
5563             if (dst_die)
5564             {
5565                 // Both classes have the artificial types, link them
5566                 clang::DeclContext *src_decl_ctx = m_die_to_decl_ctx[src_die];
5567                 if (src_decl_ctx)
5568                 {
5569                     if (log)
5570                         log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", src_decl_ctx, src_die->GetOffset(), dst_die->GetOffset());
5571                     LinkDeclContextToDIE (src_decl_ctx, dst_die);
5572                 }
5573                 else
5574                 {
5575                     if (log)
5576                         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());
5577                 }
5578
5579                 Type *src_child_type = m_die_to_type[src_die];
5580                 if (src_child_type)
5581                 {
5582                     if (log)
5583                         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());
5584                     m_die_to_type[dst_die] = src_child_type;
5585                 }
5586                 else
5587                 {
5588                     if (log)
5589                         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());
5590                 }
5591             }
5592         }
5593     }
5594
5595     if (dst_size_artificial)
5596     {
5597         for (idx = 0; idx < dst_size_artificial; ++idx)
5598         {
5599             const char *dst_name_artificial = dst_name_to_die_artificial.GetCStringAtIndex(idx);
5600             dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked (idx);
5601             if (log)
5602                 log->Printf ("warning: need to create artificial method for 0x%8.8x for method '%s'", dst_die->GetOffset(), dst_name_artificial);
5603
5604             failures.push_back(dst_die);
5605         }
5606     }
5607
5608     return (failures.size() != 0);
5609 }
5610
5611 TypeSP
5612 SymbolFileDWARF::ParseType (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die, bool *type_is_new_ptr)
5613 {
5614     TypeSP type_sp;
5615
5616     if (type_is_new_ptr)
5617         *type_is_new_ptr = false;
5618
5619 #if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE)
5620     static DIEStack g_die_stack;
5621     DIEStack::ScopedPopper scoped_die_logger(g_die_stack);
5622 #endif
5623
5624     AccessType accessibility = eAccessNone;
5625     if (die != NULL)
5626     {
5627         Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
5628         if (log)
5629         {
5630             const DWARFDebugInfoEntry *context_die;
5631             clang::DeclContext *context = GetClangDeclContextContainingDIE (dwarf_cu, die, &context_die);
5632
5633             GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')",
5634                         die->GetOffset(),
5635                         context,
5636                         context_die->GetOffset(),
5637                         DW_TAG_value_to_name(die->Tag()),
5638                         die->GetName(this, dwarf_cu));
5639
5640 #if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE)
5641             scoped_die_logger.Push (dwarf_cu, die);
5642             g_die_stack.LogDIEs(log, this);
5643 #endif
5644         }
5645 //
5646 //        Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
5647 //        if (log && dwarf_cu)
5648 //        {
5649 //            StreamString s;
5650 //            die->DumpLocation (this, dwarf_cu, s);
5651 //            GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData());
5652 //
5653 //        }
5654
5655         Type *type_ptr = m_die_to_type.lookup (die);
5656         TypeList* type_list = GetTypeList();
5657         if (type_ptr == NULL)
5658         {
5659             ClangASTContext &ast = GetClangASTContext();
5660             if (type_is_new_ptr)
5661                 *type_is_new_ptr = true;
5662
5663             const dw_tag_t tag = die->Tag();
5664
5665             bool is_forward_declaration = false;
5666             DWARFDebugInfoEntry::Attributes attributes;
5667             const char *type_name_cstr = NULL;
5668             ConstString type_name_const_str;
5669             Type::ResolveState resolve_state = Type::eResolveStateUnresolved;
5670             uint64_t byte_size = 0;
5671             Declaration decl;
5672
5673             Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID;
5674             ClangASTType clang_type;
5675
5676             dw_attr_t attr;
5677
5678             switch (tag)
5679             {
5680             case DW_TAG_base_type:
5681             case DW_TAG_pointer_type:
5682             case DW_TAG_reference_type:
5683             case DW_TAG_rvalue_reference_type:
5684             case DW_TAG_typedef:
5685             case DW_TAG_const_type:
5686             case DW_TAG_restrict_type:
5687             case DW_TAG_volatile_type:
5688             case DW_TAG_unspecified_type:
5689                 {
5690                     // Set a bit that lets us know that we are currently parsing this
5691                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
5692
5693                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
5694                     uint32_t encoding = 0;
5695                     lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
5696
5697                     if (num_attributes > 0)
5698                     {
5699                         uint32_t i;
5700                         for (i=0; i<num_attributes; ++i)
5701                         {
5702                             attr = attributes.AttributeAtIndex(i);
5703                             DWARFFormValue form_value;
5704                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
5705                             {
5706                                 switch (attr)
5707                                 {
5708                                 case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
5709                                 case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
5710                                 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
5711                                 case DW_AT_name:
5712
5713                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
5714                                     // Work around a bug in llvm-gcc where they give a name to a reference type which doesn't
5715                                     // include the "&"...
5716                                     if (tag == DW_TAG_reference_type)
5717                                     {
5718                                         if (strchr (type_name_cstr, '&') == NULL)
5719                                             type_name_cstr = NULL;
5720                                     }
5721                                     if (type_name_cstr)
5722                                         type_name_const_str.SetCString(type_name_cstr);
5723                                     break;
5724                                 case DW_AT_byte_size:   byte_size = form_value.Unsigned(); break;
5725                                 case DW_AT_encoding:    encoding = form_value.Unsigned(); break;
5726                                 case DW_AT_type:        encoding_uid = form_value.Reference(dwarf_cu); break;
5727                                 default:
5728                                 case DW_AT_sibling:
5729                                     break;
5730                                 }
5731                             }
5732                         }
5733                     }
5734
5735                     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);
5736
5737                     switch (tag)
5738                     {
5739                     default:
5740                         break;
5741
5742                     case DW_TAG_unspecified_type:
5743                         if (strcmp(type_name_cstr, "nullptr_t") == 0 ||
5744                             strcmp(type_name_cstr, "decltype(nullptr)") == 0 )
5745                         {
5746                             resolve_state = Type::eResolveStateFull;
5747                             clang_type = ast.GetBasicType(eBasicTypeNullPtr);
5748                             break;
5749                         }
5750                         // Fall through to base type below in case we can handle the type there...
5751
5752                     case DW_TAG_base_type:
5753                         resolve_state = Type::eResolveStateFull;
5754                         clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr,
5755                                                                                    encoding,
5756                                                                                    byte_size * 8);
5757                         break;
5758
5759                     case DW_TAG_pointer_type:           encoding_data_type = Type::eEncodingIsPointerUID;           break;
5760                     case DW_TAG_reference_type:         encoding_data_type = Type::eEncodingIsLValueReferenceUID;   break;
5761                     case DW_TAG_rvalue_reference_type:  encoding_data_type = Type::eEncodingIsRValueReferenceUID;   break;
5762                     case DW_TAG_typedef:                encoding_data_type = Type::eEncodingIsTypedefUID;           break;
5763                     case DW_TAG_const_type:             encoding_data_type = Type::eEncodingIsConstUID;             break;
5764                     case DW_TAG_restrict_type:          encoding_data_type = Type::eEncodingIsRestrictUID;          break;
5765                     case DW_TAG_volatile_type:          encoding_data_type = Type::eEncodingIsVolatileUID;          break;
5766                     }
5767
5768                     if (!clang_type && (encoding_data_type == Type::eEncodingIsPointerUID || encoding_data_type == Type::eEncodingIsTypedefUID) && sc.comp_unit != NULL)
5769                     {
5770                         bool translation_unit_is_objc = (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus);
5771
5772                         if (translation_unit_is_objc)
5773                         {
5774                             if (type_name_cstr != NULL)
5775                             {
5776                                 static ConstString g_objc_type_name_id("id");
5777                                 static ConstString g_objc_type_name_Class("Class");
5778                                 static ConstString g_objc_type_name_selector("SEL");
5779
5780                                 if (type_name_const_str == g_objc_type_name_id)
5781                                 {
5782                                     if (log)
5783                                         GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'id' built-in type.",
5784                                                                                   die->GetOffset(),
5785                                                                                   DW_TAG_value_to_name(die->Tag()),
5786                                                                                   die->GetName(this, dwarf_cu));
5787                                     clang_type = ast.GetBasicType(eBasicTypeObjCID);
5788                                     encoding_data_type = Type::eEncodingIsUID;
5789                                     encoding_uid = LLDB_INVALID_UID;
5790                                     resolve_state = Type::eResolveStateFull;
5791
5792                                 }
5793                                 else if (type_name_const_str == g_objc_type_name_Class)
5794                                 {
5795                                     if (log)
5796                                         GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'Class' built-in type.",
5797                                                                                   die->GetOffset(),
5798                                                                                   DW_TAG_value_to_name(die->Tag()),
5799                                                                                   die->GetName(this, dwarf_cu));
5800                                     clang_type = ast.GetBasicType(eBasicTypeObjCClass);
5801                                     encoding_data_type = Type::eEncodingIsUID;
5802                                     encoding_uid = LLDB_INVALID_UID;
5803                                     resolve_state = Type::eResolveStateFull;
5804                                 }
5805                                 else if (type_name_const_str == g_objc_type_name_selector)
5806                                 {
5807                                     if (log)
5808                                         GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'selector' built-in type.",
5809                                                                                   die->GetOffset(),
5810                                                                                   DW_TAG_value_to_name(die->Tag()),
5811                                                                                   die->GetName(this, dwarf_cu));
5812                                     clang_type = ast.GetBasicType(eBasicTypeObjCSel);
5813                                     encoding_data_type = Type::eEncodingIsUID;
5814                                     encoding_uid = LLDB_INVALID_UID;
5815                                     resolve_state = Type::eResolveStateFull;
5816                                 }
5817                             }
5818                             else if (encoding_data_type == Type::eEncodingIsPointerUID && encoding_uid != LLDB_INVALID_UID)
5819                             {
5820                                 // Clang sometimes erroneously emits id as objc_object*.  In that case we fix up the type to "id".
5821
5822                                 DWARFDebugInfoEntry* encoding_die = dwarf_cu->GetDIEPtr(encoding_uid);
5823
5824                                 if (encoding_die && encoding_die->Tag() == DW_TAG_structure_type)
5825                                 {
5826                                     if (const char *struct_name = encoding_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL))
5827                                     {
5828                                         if (!strcmp(struct_name, "objc_object"))
5829                                         {
5830                                             if (log)
5831                                                 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is 'objc_object*', which we overrode to 'id'.",
5832                                                                                           die->GetOffset(),
5833                                                                                           DW_TAG_value_to_name(die->Tag()),
5834                                                                                           die->GetName(this, dwarf_cu));
5835                                             clang_type = ast.GetBasicType(eBasicTypeObjCID);
5836                                             encoding_data_type = Type::eEncodingIsUID;
5837                                             encoding_uid = LLDB_INVALID_UID;
5838                                             resolve_state = Type::eResolveStateFull;
5839                                         }
5840                                     }
5841                                 }
5842                             }
5843                         }
5844                     }
5845
5846                     type_sp.reset( new Type (MakeUserID(die->GetOffset()),
5847                                              this,
5848                                              type_name_const_str,
5849                                              byte_size,
5850                                              NULL,
5851                                              encoding_uid,
5852                                              encoding_data_type,
5853                                              &decl,
5854                                              clang_type,
5855                                              resolve_state));
5856
5857                     m_die_to_type[die] = type_sp.get();
5858
5859 //                  Type* encoding_type = GetUniquedTypeForDIEOffset(encoding_uid, type_sp, NULL, 0, 0, false);
5860 //                  if (encoding_type != NULL)
5861 //                  {
5862 //                      if (encoding_type != DIE_IS_BEING_PARSED)
5863 //                          type_sp->SetEncodingType(encoding_type);
5864 //                      else
5865 //                          m_indirect_fixups.push_back(type_sp.get());
5866 //                  }
5867                 }
5868                 break;
5869
5870             case DW_TAG_structure_type:
5871             case DW_TAG_union_type:
5872             case DW_TAG_class_type:
5873                 {
5874                     // Set a bit that lets us know that we are currently parsing this
5875                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
5876                     bool byte_size_valid = false;
5877
5878                     LanguageType class_language = eLanguageTypeUnknown;
5879                     bool is_complete_objc_class = false;
5880                     //bool struct_is_class = false;
5881                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
5882                     if (num_attributes > 0)
5883                     {
5884                         uint32_t i;
5885                         for (i=0; i<num_attributes; ++i)
5886                         {
5887                             attr = attributes.AttributeAtIndex(i);
5888                             DWARFFormValue form_value;
5889                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
5890                             {
5891                                 switch (attr)
5892                                 {
5893                                 case DW_AT_decl_file:
5894                                     if (dwarf_cu->DW_AT_decl_file_attributes_are_invalid())
5895                                                                         {
5896                                                                                 // llvm-gcc outputs invalid DW_AT_decl_file attributes that always
5897                                                                                 // point to the compile unit file, so we clear this invalid value
5898                                                                                 // so that we can still unique types efficiently.
5899                                         decl.SetFile(FileSpec ("<invalid>", false));
5900                                                                         }
5901                                     else
5902                                         decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned()));
5903                                     break;
5904
5905                                 case DW_AT_decl_line:
5906                                     decl.SetLine(form_value.Unsigned());
5907                                     break;
5908
5909                                 case DW_AT_decl_column:
5910                                     decl.SetColumn(form_value.Unsigned());
5911                                     break;
5912
5913                                 case DW_AT_name:
5914                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
5915                                     type_name_const_str.SetCString(type_name_cstr);
5916                                     break;
5917
5918                                 case DW_AT_byte_size:
5919                                     byte_size = form_value.Unsigned();
5920                                     byte_size_valid = true;
5921                                     break;
5922
5923                                 case DW_AT_accessibility:
5924                                     accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
5925                                     break;
5926
5927                                 case DW_AT_declaration:
5928                                     is_forward_declaration = form_value.Boolean();
5929                                     break;
5930
5931                                 case DW_AT_APPLE_runtime_class:
5932                                     class_language = (LanguageType)form_value.Signed();
5933                                     break;
5934
5935                                 case DW_AT_APPLE_objc_complete_type:
5936                                     is_complete_objc_class = form_value.Signed();
5937                                     break;
5938
5939                                 case DW_AT_allocated:
5940                                 case DW_AT_associated:
5941                                 case DW_AT_data_location:
5942                                 case DW_AT_description:
5943                                 case DW_AT_start_scope:
5944                                 case DW_AT_visibility:
5945                                 default:
5946                                 case DW_AT_sibling:
5947                                     break;
5948                                 }
5949                             }
5950                         }
5951                     }
5952
5953                     UniqueDWARFASTType unique_ast_entry;
5954
5955                     // Only try and unique the type if it has a name.
5956                     if (type_name_const_str &&
5957                         GetUniqueDWARFASTTypeMap().Find (type_name_const_str,
5958                                                          this,
5959                                                          dwarf_cu,
5960                                                          die,
5961                                                          decl,
5962                                                          byte_size_valid ? byte_size : -1,
5963                                                          unique_ast_entry))
5964                     {
5965                         // We have already parsed this type or from another
5966                         // compile unit. GCC loves to use the "one definition
5967                         // rule" which can result in multiple definitions
5968                         // of the same class over and over in each compile
5969                         // unit.
5970                         type_sp = unique_ast_entry.m_type_sp;
5971                         if (type_sp)
5972                         {
5973                             m_die_to_type[die] = type_sp.get();
5974                             return type_sp;
5975                         }
5976                     }
5977
5978                     DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
5979
5980                     int tag_decl_kind = -1;
5981                     AccessType default_accessibility = eAccessNone;
5982                     if (tag == DW_TAG_structure_type)
5983                     {
5984                         tag_decl_kind = clang::TTK_Struct;
5985                         default_accessibility = eAccessPublic;
5986                     }
5987                     else if (tag == DW_TAG_union_type)
5988                     {
5989                         tag_decl_kind = clang::TTK_Union;
5990                         default_accessibility = eAccessPublic;
5991                     }
5992                     else if (tag == DW_TAG_class_type)
5993                     {
5994                         tag_decl_kind = clang::TTK_Class;
5995                         default_accessibility = eAccessPrivate;
5996                     }
5997
5998                     if (byte_size_valid && byte_size == 0 && type_name_cstr &&
5999                         die->HasChildren() == false &&
6000                         sc.comp_unit->GetLanguage() == eLanguageTypeObjC)
6001                     {
6002                         // Work around an issue with clang at the moment where
6003                         // forward declarations for objective C classes are emitted
6004                         // as:
6005                         //  DW_TAG_structure_type [2]
6006                         //  DW_AT_name( "ForwardObjcClass" )
6007                         //  DW_AT_byte_size( 0x00 )
6008                         //  DW_AT_decl_file( "..." )
6009                         //  DW_AT_decl_line( 1 )
6010                         //
6011                         // Note that there is no DW_AT_declaration and there are
6012                         // no children, and the byte size is zero.
6013                         is_forward_declaration = true;
6014                     }
6015
6016                     if (class_language == eLanguageTypeObjC ||
6017                         class_language == eLanguageTypeObjC_plus_plus)
6018                     {
6019                         if (!is_complete_objc_class && Supports_DW_AT_APPLE_objc_complete_type(dwarf_cu))
6020                         {
6021                             // We have a valid eSymbolTypeObjCClass class symbol whose
6022                             // name matches the current objective C class that we
6023                             // are trying to find and this DIE isn't the complete
6024                             // definition (we checked is_complete_objc_class above and
6025                             // know it is false), so the real definition is in here somewhere
6026                             type_sp = FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true);
6027
6028                             if (!type_sp && GetDebugMapSymfile ())
6029                             {
6030                                 // We weren't able to find a full declaration in
6031                                 // this DWARF, see if we have a declaration anywhere
6032                                 // else...
6033                                 type_sp = m_debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true);
6034                             }
6035
6036                             if (type_sp)
6037                             {
6038                                 if (log)
6039                                 {
6040                                     GetObjectFile()->GetModule()->LogMessage (log,
6041                                                                               "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an incomplete objc type, complete type is 0x%8.8" PRIx64,
6042                                                                               this,
6043                                                                               die->GetOffset(),
6044                                                                               DW_TAG_value_to_name(tag),
6045                                                                               type_name_cstr,
6046                                                                               type_sp->GetID());
6047                                 }
6048
6049                                 // We found a real definition for this type elsewhere
6050                                 // so lets use it and cache the fact that we found
6051                                 // a complete type for this die
6052                                 m_die_to_type[die] = type_sp.get();
6053                                 return type_sp;
6054                             }
6055                         }
6056                     }
6057
6058
6059                     if (is_forward_declaration)
6060                     {
6061                         // We have a forward declaration to a type and we need
6062                         // to try and find a full declaration. We look in the
6063                         // current type index just in case we have a forward
6064                         // declaration followed by an actual declarations in the
6065                         // DWARF. If this fails, we need to look elsewhere...
6066                         if (log)
6067                         {
6068                             GetObjectFile()->GetModule()->LogMessage (log,
6069                                                                       "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, trying to find complete type",
6070                                                                       this,
6071                                                                       die->GetOffset(),
6072                                                                       DW_TAG_value_to_name(tag),
6073                                                                       type_name_cstr);
6074                         }
6075
6076                         DWARFDeclContext die_decl_ctx;
6077                         die->GetDWARFDeclContext(this, dwarf_cu, die_decl_ctx);
6078
6079                         //type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str);
6080                         type_sp = FindDefinitionTypeForDWARFDeclContext (die_decl_ctx);
6081
6082                         if (!type_sp && GetDebugMapSymfile ())
6083                         {
6084                             // We weren't able to find a full declaration in
6085                             // this DWARF, see if we have a declaration anywhere
6086                             // else...
6087                             type_sp = m_debug_map_symfile->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx);
6088                         }
6089
6090                         if (type_sp)
6091                         {
6092                             if (log)
6093                             {
6094                                 GetObjectFile()->GetModule()->LogMessage (log,
6095                                                                           "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, complete type is 0x%8.8" PRIx64,
6096                                                                           this,
6097                                                                           die->GetOffset(),
6098                                                                           DW_TAG_value_to_name(tag),
6099                                                                           type_name_cstr,
6100                                                                           type_sp->GetID());
6101                             }
6102
6103                             // We found a real definition for this type elsewhere
6104                             // so lets use it and cache the fact that we found
6105                             // a complete type for this die
6106                             m_die_to_type[die] = type_sp.get();
6107                             return type_sp;
6108                         }
6109                     }
6110                     assert (tag_decl_kind != -1);
6111                     bool clang_type_was_created = false;
6112                     clang_type.SetClangType(ast.getASTContext(), m_forward_decl_die_to_clang_type.lookup (die));
6113                     if (!clang_type)
6114                     {
6115                         const DWARFDebugInfoEntry *decl_ctx_die;
6116
6117                         clang::DeclContext *decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die);
6118                         if (accessibility == eAccessNone && decl_ctx)
6119                         {
6120                             // Check the decl context that contains this class/struct/union.
6121                             // If it is a class we must give it an accessability.
6122                             const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind();
6123                             if (DeclKindIsCXXClass (containing_decl_kind))
6124                                 accessibility = default_accessibility;
6125                         }
6126
6127                         ClangASTMetadata metadata;
6128                         metadata.SetUserID(MakeUserID(die->GetOffset()));
6129                         metadata.SetIsDynamicCXXType(ClassOrStructIsVirtual (dwarf_cu, die));
6130
6131                         if (type_name_cstr && strchr (type_name_cstr, '<'))
6132                         {
6133                             ClangASTContext::TemplateParameterInfos template_param_infos;
6134                             if (ParseTemplateParameterInfos (dwarf_cu, die, template_param_infos))
6135                             {
6136                                 clang::ClassTemplateDecl *class_template_decl = ParseClassTemplateDecl (decl_ctx,
6137                                                                                                         accessibility,
6138                                                                                                         type_name_cstr,
6139                                                                                                         tag_decl_kind,
6140                                                                                                         template_param_infos);
6141
6142                                 clang::ClassTemplateSpecializationDecl *class_specialization_decl = ast.CreateClassTemplateSpecializationDecl (decl_ctx,
6143                                                                                                                                                class_template_decl,
6144                                                                                                                                                tag_decl_kind,
6145                                                                                                                                                template_param_infos);
6146                                 clang_type = ast.CreateClassTemplateSpecializationType (class_specialization_decl);
6147                                 clang_type_was_created = true;
6148
6149                                 GetClangASTContext().SetMetadata (class_template_decl, metadata);
6150                                 GetClangASTContext().SetMetadata (class_specialization_decl, metadata);
6151                             }
6152                         }
6153
6154                         if (!clang_type_was_created)
6155                         {
6156                             clang_type_was_created = true;
6157                             clang_type = ast.CreateRecordType (decl_ctx,
6158                                                                accessibility,
6159                                                                type_name_cstr,
6160                                                                tag_decl_kind,
6161                                                                class_language,
6162                                                                &metadata);
6163                         }
6164                     }
6165
6166                     // Store a forward declaration to this class type in case any
6167                     // parameters in any class methods need it for the clang
6168                     // types for function prototypes.
6169                     LinkDeclContextToDIE(clang_type.GetDeclContextForType(), die);
6170                     type_sp.reset (new Type (MakeUserID(die->GetOffset()),
6171                                              this,
6172                                              type_name_const_str,
6173                                              byte_size,
6174                                              NULL,
6175                                              LLDB_INVALID_UID,
6176                                              Type::eEncodingIsUID,
6177                                              &decl,
6178                                              clang_type,
6179                                              Type::eResolveStateForward));
6180
6181                     type_sp->SetIsCompleteObjCClass(is_complete_objc_class);
6182
6183
6184                     // Add our type to the unique type map so we don't
6185                     // end up creating many copies of the same type over
6186                     // and over in the ASTContext for our module
6187                     unique_ast_entry.m_type_sp = type_sp;
6188                     unique_ast_entry.m_symfile = this;
6189                     unique_ast_entry.m_cu = dwarf_cu;
6190                     unique_ast_entry.m_die = die;
6191                     unique_ast_entry.m_declaration = decl;
6192                     unique_ast_entry.m_byte_size = byte_size;
6193                     GetUniqueDWARFASTTypeMap().Insert (type_name_const_str,
6194                                                        unique_ast_entry);
6195
6196                     if (is_forward_declaration && die->HasChildren())
6197                     {
6198                         // Check to see if the DIE actually has a definition, some version of GCC will
6199                         // emit DIEs with DW_AT_declaration set to true, but yet still have subprogram,
6200                         // members, or inheritance, so we can't trust it
6201                         const DWARFDebugInfoEntry *child_die = die->GetFirstChild();
6202                         while (child_die)
6203                         {
6204                             switch (child_die->Tag())
6205                             {
6206                                 case DW_TAG_inheritance:
6207                                 case DW_TAG_subprogram:
6208                                 case DW_TAG_member:
6209                                 case DW_TAG_APPLE_property:
6210                                     child_die = NULL;
6211                                     is_forward_declaration = false;
6212                                     break;
6213                                 default:
6214                                     child_die = child_die->GetSibling();
6215                                     break;
6216                             }
6217                         }
6218                     }
6219
6220                     if (!is_forward_declaration)
6221                     {
6222                         // Always start the definition for a class type so that
6223                         // if the class has child classes or types that require
6224                         // the class to be created for use as their decl contexts
6225                         // the class will be ready to accept these child definitions.
6226                         if (die->HasChildren() == false)
6227                         {
6228                             // No children for this struct/union/class, lets finish it
6229                             clang_type.StartTagDeclarationDefinition ();
6230                             clang_type.CompleteTagDeclarationDefinition ();
6231
6232                             if (tag == DW_TAG_structure_type) // this only applies in C
6233                             {
6234                                 clang::RecordDecl *record_decl = clang_type.GetAsRecordDecl();
6235
6236                                 if (record_decl)
6237                                 {
6238                                     LayoutInfo layout_info;
6239
6240                                     layout_info.alignment = 0;
6241                                     layout_info.bit_size = 0;
6242
6243                                     m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info));
6244                                 }
6245                             }
6246                         }
6247                         else if (clang_type_was_created)
6248                         {
6249                             // Start the definition if the class is not objective C since
6250                             // the underlying decls respond to isCompleteDefinition(). Objective
6251                             // C decls dont' respond to isCompleteDefinition() so we can't
6252                             // start the declaration definition right away. For C++ classs/union/structs
6253                             // we want to start the definition in case the class is needed as the
6254                             // declaration context for a contained class or type without the need
6255                             // to complete that type..
6256
6257                             if (class_language != eLanguageTypeObjC &&
6258                                 class_language != eLanguageTypeObjC_plus_plus)
6259                                 clang_type.StartTagDeclarationDefinition ();
6260
6261                             // Leave this as a forward declaration until we need
6262                             // to know the details of the type. lldb_private::Type
6263                             // will automatically call the SymbolFile virtual function
6264                             // "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition(Type *)"
6265                             // When the definition needs to be defined.
6266                             m_forward_decl_die_to_clang_type[die] = clang_type.GetOpaqueQualType();
6267                             m_forward_decl_clang_type_to_die[clang_type.RemoveFastQualifiers().GetOpaqueQualType()] = die;
6268                             clang_type.SetHasExternalStorage (true);
6269                         }
6270                     }
6271
6272                 }
6273                 break;
6274
6275             case DW_TAG_enumeration_type:
6276                 {
6277                     // Set a bit that lets us know that we are currently parsing this
6278                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
6279
6280                     lldb::user_id_t encoding_uid = DW_INVALID_OFFSET;
6281
6282                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
6283                     if (num_attributes > 0)
6284                     {
6285                         uint32_t i;
6286
6287                         for (i=0; i<num_attributes; ++i)
6288                         {
6289                             attr = attributes.AttributeAtIndex(i);
6290                             DWARFFormValue form_value;
6291                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6292                             {
6293                                 switch (attr)
6294                                 {
6295                                 case DW_AT_decl_file:       decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6296                                 case DW_AT_decl_line:       decl.SetLine(form_value.Unsigned()); break;
6297                                 case DW_AT_decl_column:     decl.SetColumn(form_value.Unsigned()); break;
6298                                 case DW_AT_name:
6299                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
6300                                     type_name_const_str.SetCString(type_name_cstr);
6301                                     break;
6302                                 case DW_AT_type:            encoding_uid = form_value.Reference(dwarf_cu); break;
6303                                 case DW_AT_byte_size:       byte_size = form_value.Unsigned(); break;
6304                                 case DW_AT_accessibility:   break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6305                                 case DW_AT_declaration:     break; //is_forward_declaration = form_value.Boolean(); break;
6306                                 case DW_AT_allocated:
6307                                 case DW_AT_associated:
6308                                 case DW_AT_bit_stride:
6309                                 case DW_AT_byte_stride:
6310                                 case DW_AT_data_location:
6311                                 case DW_AT_description:
6312                                 case DW_AT_start_scope:
6313                                 case DW_AT_visibility:
6314                                 case DW_AT_specification:
6315                                 case DW_AT_abstract_origin:
6316                                 case DW_AT_sibling:
6317                                     break;
6318                                 }
6319                             }
6320                         }
6321
6322                         DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6323
6324                         ClangASTType enumerator_clang_type;
6325                         clang_type.SetClangType (ast.getASTContext(), m_forward_decl_die_to_clang_type.lookup (die));
6326                         if (!clang_type)
6327                         {
6328                             if (encoding_uid != DW_INVALID_OFFSET)
6329                             {
6330                                 Type *enumerator_type = ResolveTypeUID(encoding_uid);
6331                                 if (enumerator_type)
6332                                     enumerator_clang_type = enumerator_type->GetClangFullType();
6333                             }
6334
6335                             if (!enumerator_clang_type)
6336                                 enumerator_clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (NULL,
6337                                                                                                       DW_ATE_signed,
6338                                                                                                       byte_size * 8);
6339
6340                             clang_type = ast.CreateEnumerationType (type_name_cstr,
6341                                                                     GetClangDeclContextContainingDIE (dwarf_cu, die, NULL),
6342                                                                     decl,
6343                                                                     enumerator_clang_type);
6344                         }
6345                         else
6346                         {
6347                             enumerator_clang_type = clang_type.GetEnumerationIntegerType ();
6348                         }
6349
6350                         LinkDeclContextToDIE(clang_type.GetDeclContextForType(), die);
6351
6352                         type_sp.reset( new Type (MakeUserID(die->GetOffset()),
6353                                                  this,
6354                                                  type_name_const_str,
6355                                                  byte_size,
6356                                                  NULL,
6357                                                  encoding_uid,
6358                                                  Type::eEncodingIsUID,
6359                                                  &decl,
6360                                                  clang_type,
6361                                                  Type::eResolveStateForward));
6362
6363                         clang_type.StartTagDeclarationDefinition ();
6364                         if (die->HasChildren())
6365                         {
6366                             SymbolContext cu_sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
6367                             bool is_signed = false;
6368                             enumerator_clang_type.IsIntegerType(is_signed);
6369                             ParseChildEnumerators(cu_sc, clang_type, is_signed, type_sp->GetByteSize(), dwarf_cu, die);
6370                         }
6371                         clang_type.CompleteTagDeclarationDefinition ();
6372                     }
6373                 }
6374                 break;
6375
6376             case DW_TAG_inlined_subroutine:
6377             case DW_TAG_subprogram:
6378             case DW_TAG_subroutine_type:
6379                 {
6380                     // Set a bit that lets us know that we are currently parsing this
6381                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
6382
6383                     //const char *mangled = NULL;
6384                     dw_offset_t type_die_offset = DW_INVALID_OFFSET;
6385                     bool is_variadic = false;
6386                     bool is_inline = false;
6387                     bool is_static = false;
6388                     bool is_virtual = false;
6389                     bool is_explicit = false;
6390                     bool is_artificial = false;
6391                     dw_offset_t specification_die_offset = DW_INVALID_OFFSET;
6392                     dw_offset_t abstract_origin_die_offset = DW_INVALID_OFFSET;
6393                     dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET;
6394
6395                     unsigned type_quals = 0;
6396                     clang::StorageClass storage = clang::SC_None;//, Extern, Static, PrivateExtern
6397
6398
6399                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
6400                     if (num_attributes > 0)
6401                     {
6402                         uint32_t i;
6403                         for (i=0; i<num_attributes; ++i)
6404                         {
6405                             attr = attributes.AttributeAtIndex(i);
6406                             DWARFFormValue form_value;
6407                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6408                             {
6409                                 switch (attr)
6410                                 {
6411                                 case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6412                                 case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
6413                                 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
6414                                 case DW_AT_name:
6415                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
6416                                     type_name_const_str.SetCString(type_name_cstr);
6417                                     break;
6418
6419                                 case DW_AT_linkage_name:
6420                                 case DW_AT_MIPS_linkage_name:   break; // mangled = form_value.AsCString(&get_debug_str_data()); break;
6421                                 case DW_AT_type:                type_die_offset = form_value.Reference(dwarf_cu); break;
6422                                 case DW_AT_accessibility:       accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6423                                 case DW_AT_declaration:         break; // is_forward_declaration = form_value.Boolean(); break;
6424                                 case DW_AT_inline:              is_inline = form_value.Boolean(); break;
6425                                 case DW_AT_virtuality:          is_virtual = form_value.Boolean();  break;
6426                                 case DW_AT_explicit:            is_explicit = form_value.Boolean();  break;
6427                                 case DW_AT_artificial:          is_artificial = form_value.Boolean();  break;
6428
6429
6430                                 case DW_AT_external:
6431                                     if (form_value.Unsigned())
6432                                     {
6433                                         if (storage == clang::SC_None)
6434                                             storage = clang::SC_Extern;
6435                                         else
6436                                             storage = clang::SC_PrivateExtern;
6437                                     }
6438                                     break;
6439
6440                                 case DW_AT_specification:
6441                                     specification_die_offset = form_value.Reference(dwarf_cu);
6442                                     break;
6443
6444                                 case DW_AT_abstract_origin:
6445                                     abstract_origin_die_offset = form_value.Reference(dwarf_cu);
6446                                     break;
6447
6448                                 case DW_AT_object_pointer:
6449                                     object_pointer_die_offset = form_value.Reference(dwarf_cu);
6450                                     break;
6451
6452                                 case DW_AT_allocated:
6453                                 case DW_AT_associated:
6454                                 case DW_AT_address_class:
6455                                 case DW_AT_calling_convention:
6456                                 case DW_AT_data_location:
6457                                 case DW_AT_elemental:
6458                                 case DW_AT_entry_pc:
6459                                 case DW_AT_frame_base:
6460                                 case DW_AT_high_pc:
6461                                 case DW_AT_low_pc:
6462                                 case DW_AT_prototyped:
6463                                 case DW_AT_pure:
6464                                 case DW_AT_ranges:
6465                                 case DW_AT_recursive:
6466                                 case DW_AT_return_addr:
6467                                 case DW_AT_segment:
6468                                 case DW_AT_start_scope:
6469                                 case DW_AT_static_link:
6470                                 case DW_AT_trampoline:
6471                                 case DW_AT_visibility:
6472                                 case DW_AT_vtable_elem_location:
6473                                 case DW_AT_description:
6474                                 case DW_AT_sibling:
6475                                     break;
6476                                 }
6477                             }
6478                         }
6479                     }
6480
6481                     std::string object_pointer_name;
6482                     if (object_pointer_die_offset != DW_INVALID_OFFSET)
6483                     {
6484                         // Get the name from the object pointer die
6485                         StreamString s;
6486                         if (DWARFDebugInfoEntry::GetName (this, dwarf_cu, object_pointer_die_offset, s))
6487                         {
6488                             object_pointer_name.assign(s.GetData());
6489                         }
6490                     }
6491
6492                     DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6493
6494                     ClangASTType return_clang_type;
6495                     Type *func_type = NULL;
6496
6497                     if (type_die_offset != DW_INVALID_OFFSET)
6498                         func_type = ResolveTypeUID(type_die_offset);
6499
6500                     if (func_type)
6501                         return_clang_type = func_type->GetClangForwardType();
6502                     else
6503                         return_clang_type = ast.GetBasicType(eBasicTypeVoid);
6504
6505
6506                     std::vector<ClangASTType> function_param_types;
6507                     std::vector<clang::ParmVarDecl*> function_param_decls;
6508
6509                     // Parse the function children for the parameters
6510
6511                     const DWARFDebugInfoEntry *decl_ctx_die = NULL;
6512                     clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die);
6513                     const clang::Decl::Kind containing_decl_kind = containing_decl_ctx->getDeclKind();
6514
6515                     const bool is_cxx_method = DeclKindIsCXXClass (containing_decl_kind);
6516                     // Start off static. This will be set to false in ParseChildParameters(...)
6517                     // if we find a "this" paramters as the first parameter
6518                     if (is_cxx_method)
6519                         is_static = true;
6520                     ClangASTContext::TemplateParameterInfos template_param_infos;
6521
6522                     if (die->HasChildren())
6523                     {
6524                         bool skip_artificial = true;
6525                         ParseChildParameters (sc,
6526                                               containing_decl_ctx,
6527                                               dwarf_cu,
6528                                               die,
6529                                               skip_artificial,
6530                                               is_static,
6531                                               type_list,
6532                                               function_param_types,
6533                                               function_param_decls,
6534                                               type_quals,
6535                                               template_param_infos);
6536                     }
6537
6538                     // clang_type will get the function prototype clang type after this call
6539                     clang_type = ast.CreateFunctionType (return_clang_type,
6540                                                          function_param_types.data(),
6541                                                          function_param_types.size(),
6542                                                          is_variadic,
6543                                                          type_quals);
6544
6545                     bool ignore_containing_context = false;
6546
6547                     if (type_name_cstr)
6548                     {
6549                         bool type_handled = false;
6550                         if (tag == DW_TAG_subprogram)
6551                         {
6552                             ObjCLanguageRuntime::MethodName objc_method (type_name_cstr, true);
6553                             if (objc_method.IsValid(true))
6554                             {
6555                                 SymbolContext empty_sc;
6556                                 ClangASTType class_opaque_type;
6557                                 ConstString class_name(objc_method.GetClassName());
6558                                 if (class_name)
6559                                 {
6560                                     TypeList types;
6561                                     TypeSP complete_objc_class_type_sp (FindCompleteObjCDefinitionTypeForDIE (NULL, class_name, false));
6562
6563                                     if (complete_objc_class_type_sp)
6564                                     {
6565                                         ClangASTType type_clang_forward_type = complete_objc_class_type_sp->GetClangForwardType();
6566                                         if (type_clang_forward_type.IsObjCObjectOrInterfaceType ())
6567                                             class_opaque_type = type_clang_forward_type;
6568                                     }
6569                                 }
6570
6571                                 if (class_opaque_type)
6572                                 {
6573                                     // If accessibility isn't set to anything valid, assume public for
6574                                     // now...
6575                                     if (accessibility == eAccessNone)
6576                                         accessibility = eAccessPublic;
6577
6578                                     clang::ObjCMethodDecl *objc_method_decl = class_opaque_type.AddMethodToObjCObjectType (type_name_cstr,
6579                                                                                                                            clang_type,
6580                                                                                                                            accessibility,
6581                                                                                                                            is_artificial);
6582                                     type_handled = objc_method_decl != NULL;
6583                                     if (type_handled)
6584                                     {
6585                                         LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(objc_method_decl), die);
6586                                         GetClangASTContext().SetMetadataAsUserID (objc_method_decl, MakeUserID(die->GetOffset()));
6587                                     }
6588                                     else
6589                                     {
6590                                         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",
6591                                                                                    die->GetOffset(),
6592                                                                                    tag,
6593                                                                                    DW_TAG_value_to_name(tag));
6594                                     }
6595                                 }
6596                             }
6597                             else if (is_cxx_method)
6598                             {
6599                                 // Look at the parent of this DIE and see if is is
6600                                 // a class or struct and see if this is actually a
6601                                 // C++ method
6602                                 Type *class_type = ResolveType (dwarf_cu, decl_ctx_die);
6603                                 if (class_type)
6604                                 {
6605                                     if (class_type->GetID() != MakeUserID(decl_ctx_die->GetOffset()))
6606                                     {
6607                                         // We uniqued the parent class of this function to another class
6608                                         // so we now need to associate all dies under "decl_ctx_die" to
6609                                         // DIEs in the DIE for "class_type"...
6610                                         SymbolFileDWARF *class_symfile = NULL;
6611                                         DWARFCompileUnitSP class_type_cu_sp;
6612                                         const DWARFDebugInfoEntry *class_type_die = NULL;
6613
6614                                         SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile();
6615                                         if (debug_map_symfile)
6616                                         {
6617                                             class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex(SymbolFileDWARFDebugMap::GetOSOIndexFromUserID(class_type->GetID()));
6618                                             class_type_die = class_symfile->DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp);
6619                                         }
6620                                         else
6621                                         {
6622                                             class_symfile = this;
6623                                             class_type_die = DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp);
6624                                         }
6625                                         if (class_type_die)
6626                                         {
6627                                             llvm::SmallVector<const DWARFDebugInfoEntry *, 0> failures;
6628
6629                                             CopyUniqueClassMethodTypes (class_symfile,
6630                                                                         class_type,
6631                                                                         class_type_cu_sp.get(),
6632                                                                         class_type_die,
6633                                                                         dwarf_cu,
6634                                                                         decl_ctx_die,
6635                                                                         failures);
6636
6637                                             // FIXME do something with these failures that's smarter than
6638                                             // just dropping them on the ground.  Unfortunately classes don't
6639                                             // like having stuff added to them after their definitions are
6640                                             // complete...
6641
6642                                             type_ptr = m_die_to_type[die];
6643                                             if (type_ptr && type_ptr != DIE_IS_BEING_PARSED)
6644                                             {
6645                                                 type_sp = type_ptr->shared_from_this();
6646                                                 break;
6647                                             }
6648                                         }
6649                                     }
6650
6651                                     if (specification_die_offset != DW_INVALID_OFFSET)
6652                                     {
6653                                         // We have a specification which we are going to base our function
6654                                         // prototype off of, so we need this type to be completed so that the
6655                                         // m_die_to_decl_ctx for the method in the specification has a valid
6656                                         // clang decl context.
6657                                         class_type->GetClangForwardType();
6658                                         // If we have a specification, then the function type should have been
6659                                         // made with the specification and not with this die.
6660                                         DWARFCompileUnitSP spec_cu_sp;
6661                                         const DWARFDebugInfoEntry* spec_die = DebugInfo()->GetDIEPtr(specification_die_offset, &spec_cu_sp);
6662                                         clang::DeclContext *spec_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, spec_die);
6663                                         if (spec_clang_decl_ctx)
6664                                         {
6665                                             LinkDeclContextToDIE(spec_clang_decl_ctx, die);
6666                                         }
6667                                         else
6668                                         {
6669                                             GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_specification(0x%8.8x) has no decl\n",
6670                                                                                          MakeUserID(die->GetOffset()),
6671                                                                                          specification_die_offset);
6672                                         }
6673                                         type_handled = true;
6674                                     }
6675                                     else if (abstract_origin_die_offset != DW_INVALID_OFFSET)
6676                                     {
6677                                         // We have a specification which we are going to base our function
6678                                         // prototype off of, so we need this type to be completed so that the
6679                                         // m_die_to_decl_ctx for the method in the abstract origin has a valid
6680                                         // clang decl context.
6681                                         class_type->GetClangForwardType();
6682
6683                                         DWARFCompileUnitSP abs_cu_sp;
6684                                         const DWARFDebugInfoEntry* abs_die = DebugInfo()->GetDIEPtr(abstract_origin_die_offset, &abs_cu_sp);
6685                                         clang::DeclContext *abs_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, abs_die);
6686                                         if (abs_clang_decl_ctx)
6687                                         {
6688                                             LinkDeclContextToDIE (abs_clang_decl_ctx, die);
6689                                         }
6690                                         else
6691                                         {
6692                                             GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_abstract_origin(0x%8.8x) has no decl\n",
6693                                                                                          MakeUserID(die->GetOffset()),
6694                                                                                          abstract_origin_die_offset);
6695                                         }
6696                                         type_handled = true;
6697                                     }
6698                                     else
6699                                     {
6700                                         ClangASTType class_opaque_type = class_type->GetClangForwardType();
6701                                         if (class_opaque_type.IsCXXClassType ())
6702                                         {
6703                                             if (class_opaque_type.IsBeingDefined ())
6704                                             {
6705                                                 // Neither GCC 4.2 nor clang++ currently set a valid accessibility
6706                                                 // in the DWARF for C++ methods... Default to public for now...
6707                                                 if (accessibility == eAccessNone)
6708                                                     accessibility = eAccessPublic;
6709
6710                                                 if (!is_static && !die->HasChildren())
6711                                                 {
6712                                                     // We have a C++ member function with no children (this pointer!)
6713                                                     // and clang will get mad if we try and make a function that isn't
6714                                                     // well formed in the DWARF, so we will just skip it...
6715                                                     type_handled = true;
6716                                                 }
6717                                                 else
6718                                                 {
6719                                                     clang::CXXMethodDecl *cxx_method_decl;
6720                                                     // REMOVE THE CRASH DESCRIPTION BELOW
6721                                                     Host::SetCrashDescriptionWithFormat ("SymbolFileDWARF::ParseType() is adding a method %s to class %s in DIE 0x%8.8" PRIx64 " from %s",
6722                                                                                          type_name_cstr,
6723                                                                                          class_type->GetName().GetCString(),
6724                                                                                          MakeUserID(die->GetOffset()),
6725                                                                                          m_obj_file->GetFileSpec().GetPath().c_str());
6726
6727                                                     const bool is_attr_used = false;
6728
6729                                                     cxx_method_decl = class_opaque_type.AddMethodToCXXRecordType (type_name_cstr,
6730                                                                                                                   clang_type,
6731                                                                                                                   accessibility,
6732                                                                                                                   is_virtual,
6733                                                                                                                   is_static,
6734                                                                                                                   is_inline,
6735                                                                                                                   is_explicit,
6736                                                                                                                   is_attr_used,
6737                                                                                                                   is_artificial);
6738
6739                                                     type_handled = cxx_method_decl != NULL;
6740
6741                                                     if (type_handled)
6742                                                     {
6743                                                         LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(cxx_method_decl), die);
6744
6745                                                         Host::SetCrashDescription (NULL);
6746
6747
6748                                                         ClangASTMetadata metadata;
6749                                                         metadata.SetUserID(MakeUserID(die->GetOffset()));
6750
6751                                                         if (!object_pointer_name.empty())
6752                                                         {
6753                                                             metadata.SetObjectPtrName(object_pointer_name.c_str());
6754                                                             if (log)
6755                                                                 log->Printf ("Setting object pointer name: %s on method object %p.\n",
6756                                                                              object_pointer_name.c_str(),
6757                                                                              cxx_method_decl);
6758                                                         }
6759                                                         GetClangASTContext().SetMetadata (cxx_method_decl, metadata);
6760                                                     }
6761                                                     else
6762                                                     {
6763                                                         ignore_containing_context = true;
6764                                                     }
6765                                                 }
6766                                             }
6767                                             else
6768                                             {
6769                                                 // We were asked to parse the type for a method in a class, yet the
6770                                                 // class hasn't been asked to complete itself through the
6771                                                 // clang::ExternalASTSource protocol, so we need to just have the
6772                                                 // class complete itself and do things the right way, then our
6773                                                 // DIE should then have an entry in the m_die_to_type map. First
6774                                                 // we need to modify the m_die_to_type so it doesn't think we are
6775                                                 // trying to parse this DIE anymore...
6776                                                 m_die_to_type[die] = NULL;
6777
6778                                                 // Now we get the full type to force our class type to complete itself
6779                                                 // using the clang::ExternalASTSource protocol which will parse all
6780                                                 // base classes and all methods (including the method for this DIE).
6781                                                 class_type->GetClangFullType();
6782
6783                                                 // The type for this DIE should have been filled in the function call above
6784                                                 type_ptr = m_die_to_type[die];
6785                                                 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED)
6786                                                 {
6787                                                     type_sp = type_ptr->shared_from_this();
6788                                                     break;
6789                                                 }
6790
6791                                                 // FIXME This is fixing some even uglier behavior but we really need to
6792                                                 // uniq the methods of each class as well as the class itself.
6793                                                 // <rdar://problem/11240464>
6794                                                 type_handled = true;
6795                                             }
6796                                         }
6797                                     }
6798                                 }
6799                             }
6800                         }
6801
6802                         if (!type_handled)
6803                         {
6804                             // We just have a function that isn't part of a class
6805                             clang::FunctionDecl *function_decl = ast.CreateFunctionDeclaration (ignore_containing_context ? GetClangASTContext().GetTranslationUnitDecl() : containing_decl_ctx,
6806                                                                                                 type_name_cstr,
6807                                                                                                 clang_type,
6808                                                                                                 storage,
6809                                                                                                 is_inline);
6810
6811 //                            if (template_param_infos.GetSize() > 0)
6812 //                            {
6813 //                                clang::FunctionTemplateDecl *func_template_decl = ast.CreateFunctionTemplateDecl (containing_decl_ctx,
6814 //                                                                                                                  function_decl,
6815 //                                                                                                                  type_name_cstr,
6816 //                                                                                                                  template_param_infos);
6817 //
6818 //                                ast.CreateFunctionTemplateSpecializationInfo (function_decl,
6819 //                                                                              func_template_decl,
6820 //                                                                              template_param_infos);
6821 //                            }
6822                             // Add the decl to our DIE to decl context map
6823                             assert (function_decl);
6824                             LinkDeclContextToDIE(function_decl, die);
6825                             if (!function_param_decls.empty())
6826                                 ast.SetFunctionParameters (function_decl,
6827                                                            &function_param_decls.front(),
6828                                                            function_param_decls.size());
6829
6830                             ClangASTMetadata metadata;
6831                             metadata.SetUserID(MakeUserID(die->GetOffset()));
6832
6833                             if (!object_pointer_name.empty())
6834                             {
6835                                 metadata.SetObjectPtrName(object_pointer_name.c_str());
6836                                 if (log)
6837                                     log->Printf ("Setting object pointer name: %s on function object %p.",
6838                                                  object_pointer_name.c_str(),
6839                                                 function_decl);
6840                             }
6841                             GetClangASTContext().SetMetadata (function_decl, metadata);
6842                         }
6843                     }
6844                     type_sp.reset( new Type (MakeUserID(die->GetOffset()),
6845                                              this,
6846                                              type_name_const_str,
6847                                              0,
6848                                              NULL,
6849                                              LLDB_INVALID_UID,
6850                                              Type::eEncodingIsUID,
6851                                              &decl,
6852                                              clang_type,
6853                                              Type::eResolveStateFull));
6854                     assert(type_sp.get());
6855                 }
6856                 break;
6857
6858             case DW_TAG_array_type:
6859                 {
6860                     // Set a bit that lets us know that we are currently parsing this
6861                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
6862
6863                     lldb::user_id_t type_die_offset = DW_INVALID_OFFSET;
6864                     int64_t first_index = 0;
6865                     uint32_t byte_stride = 0;
6866                     uint32_t bit_stride = 0;
6867                     bool is_vector = false;
6868                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
6869
6870                     if (num_attributes > 0)
6871                     {
6872                         uint32_t i;
6873                         for (i=0; i<num_attributes; ++i)
6874                         {
6875                             attr = attributes.AttributeAtIndex(i);
6876                             DWARFFormValue form_value;
6877                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6878                             {
6879                                 switch (attr)
6880                                 {
6881                                 case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6882                                 case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
6883                                 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
6884                                 case DW_AT_name:
6885                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
6886                                     type_name_const_str.SetCString(type_name_cstr);
6887                                     break;
6888
6889                                 case DW_AT_type:            type_die_offset = form_value.Reference(dwarf_cu); break;
6890                                 case DW_AT_byte_size:       break; // byte_size = form_value.Unsigned(); break;
6891                                 case DW_AT_byte_stride:     byte_stride = form_value.Unsigned(); break;
6892                                 case DW_AT_bit_stride:      bit_stride = form_value.Unsigned(); break;
6893                                 case DW_AT_GNU_vector:      is_vector = form_value.Boolean(); break;
6894                                 case DW_AT_accessibility:   break; // accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6895                                 case DW_AT_declaration:     break; // is_forward_declaration = form_value.Boolean(); break;
6896                                 case DW_AT_allocated:
6897                                 case DW_AT_associated:
6898                                 case DW_AT_data_location:
6899                                 case DW_AT_description:
6900                                 case DW_AT_ordering:
6901                                 case DW_AT_start_scope:
6902                                 case DW_AT_visibility:
6903                                 case DW_AT_specification:
6904                                 case DW_AT_abstract_origin:
6905                                 case DW_AT_sibling:
6906                                     break;
6907                                 }
6908                             }
6909                         }
6910
6911                         DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6912
6913                         Type *element_type = ResolveTypeUID(type_die_offset);
6914
6915                         if (element_type)
6916                         {
6917                             std::vector<uint64_t> element_orders;
6918                             ParseChildArrayInfo(sc, dwarf_cu, die, first_index, element_orders, byte_stride, bit_stride);
6919                             if (byte_stride == 0 && bit_stride == 0)
6920                                 byte_stride = element_type->GetByteSize();
6921                             ClangASTType array_element_type = element_type->GetClangForwardType();
6922                             uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride;
6923                             uint64_t num_elements = 0;
6924                             std::vector<uint64_t>::const_reverse_iterator pos;
6925                             std::vector<uint64_t>::const_reverse_iterator end = element_orders.rend();
6926                             for (pos = element_orders.rbegin(); pos != end; ++pos)
6927                             {
6928                                 num_elements = *pos;
6929                                 clang_type = ast.CreateArrayType (array_element_type,
6930                                                                   num_elements,
6931                                                                   is_vector);
6932                                 array_element_type = clang_type;
6933                                 array_element_bit_stride = num_elements ? array_element_bit_stride * num_elements : array_element_bit_stride;
6934                             }
6935                             ConstString empty_name;
6936                             type_sp.reset( new Type (MakeUserID(die->GetOffset()),
6937                                                      this,
6938                                                      empty_name,
6939                                                      array_element_bit_stride / 8,
6940                                                      NULL,
6941                                                      type_die_offset,
6942                                                      Type::eEncodingIsUID,
6943                                                      &decl,
6944                                                      clang_type,
6945                                                      Type::eResolveStateFull));
6946                             type_sp->SetEncodingType (element_type);
6947                         }
6948                     }
6949                 }
6950                 break;
6951
6952             case DW_TAG_ptr_to_member_type:
6953                 {
6954                     dw_offset_t type_die_offset = DW_INVALID_OFFSET;
6955                     dw_offset_t containing_type_die_offset = DW_INVALID_OFFSET;
6956
6957                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
6958
6959                     if (num_attributes > 0) {
6960                         uint32_t i;
6961                         for (i=0; i<num_attributes; ++i)
6962                         {
6963                             attr = attributes.AttributeAtIndex(i);
6964                             DWARFFormValue form_value;
6965                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6966                             {
6967                                 switch (attr)
6968                                 {
6969                                     case DW_AT_type:
6970                                         type_die_offset = form_value.Reference(dwarf_cu); break;
6971                                     case DW_AT_containing_type:
6972                                         containing_type_die_offset = form_value.Reference(dwarf_cu); break;
6973                                 }
6974                             }
6975                         }
6976
6977                         Type *pointee_type = ResolveTypeUID(type_die_offset);
6978                         Type *class_type = ResolveTypeUID(containing_type_die_offset);
6979
6980                         ClangASTType pointee_clang_type = pointee_type->GetClangForwardType();
6981                         ClangASTType class_clang_type = class_type->GetClangLayoutType();
6982
6983                         clang_type = pointee_clang_type.CreateMemberPointerType(class_clang_type);
6984
6985                         byte_size = clang_type.GetByteSize();
6986
6987                         type_sp.reset( new Type (MakeUserID(die->GetOffset()),
6988                                                  this,
6989                                                  type_name_const_str,
6990                                                  byte_size,
6991                                                  NULL,
6992                                                  LLDB_INVALID_UID,
6993                                                  Type::eEncodingIsUID,
6994                                                  NULL,
6995                                                  clang_type,
6996                                                  Type::eResolveStateForward));
6997                     }
6998
6999                     break;
7000                 }
7001             default:
7002                 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",
7003                                                            die->GetOffset(),
7004                                                            tag,
7005                                                            DW_TAG_value_to_name(tag));
7006                 break;
7007             }
7008
7009             if (type_sp.get())
7010             {
7011                 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die);
7012                 dw_tag_t sc_parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
7013
7014                 SymbolContextScope * symbol_context_scope = NULL;
7015                 if (sc_parent_tag == DW_TAG_compile_unit)
7016                 {
7017                     symbol_context_scope = sc.comp_unit;
7018                 }
7019                 else if (sc.function != NULL)
7020                 {
7021                     symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
7022                     if (symbol_context_scope == NULL)
7023                         symbol_context_scope = sc.function;
7024                 }
7025
7026                 if (symbol_context_scope != NULL)
7027                 {
7028                     type_sp->SetSymbolContextScope(symbol_context_scope);
7029                 }
7030
7031                 // We are ready to put this type into the uniqued list up at the module level
7032                 type_list->Insert (type_sp);
7033
7034                 m_die_to_type[die] = type_sp.get();
7035             }
7036         }
7037         else if (type_ptr != DIE_IS_BEING_PARSED)
7038         {
7039             type_sp = type_ptr->shared_from_this();
7040         }
7041     }
7042     return type_sp;
7043 }
7044
7045 size_t
7046 SymbolFileDWARF::ParseTypes
7047 (
7048     const SymbolContext& sc,
7049     DWARFCompileUnit* dwarf_cu,
7050     const DWARFDebugInfoEntry *die,
7051     bool parse_siblings,
7052     bool parse_children
7053 )
7054 {
7055     size_t types_added = 0;
7056     while (die != NULL)
7057     {
7058         bool type_is_new = false;
7059         if (ParseType(sc, dwarf_cu, die, &type_is_new).get())
7060         {
7061             if (type_is_new)
7062                 ++types_added;
7063         }
7064
7065         if (parse_children && die->HasChildren())
7066         {
7067             if (die->Tag() == DW_TAG_subprogram)
7068             {
7069                 SymbolContext child_sc(sc);
7070                 child_sc.function = sc.comp_unit->FindFunctionByUID(MakeUserID(die->GetOffset())).get();
7071                 types_added += ParseTypes(child_sc, dwarf_cu, die->GetFirstChild(), true, true);
7072             }
7073             else
7074                 types_added += ParseTypes(sc, dwarf_cu, die->GetFirstChild(), true, true);
7075         }
7076
7077         if (parse_siblings)
7078             die = die->GetSibling();
7079         else
7080             die = NULL;
7081     }
7082     return types_added;
7083 }
7084
7085
7086 size_t
7087 SymbolFileDWARF::ParseFunctionBlocks (const SymbolContext &sc)
7088 {
7089     assert(sc.comp_unit && sc.function);
7090     size_t functions_added = 0;
7091     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
7092     if (dwarf_cu)
7093     {
7094         dw_offset_t function_die_offset = sc.function->GetID();
7095         const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(function_die_offset);
7096         if (function_die)
7097         {
7098             ParseFunctionBlocks(sc, &sc.function->GetBlock (false), dwarf_cu, function_die, LLDB_INVALID_ADDRESS, 0);
7099         }
7100     }
7101
7102     return functions_added;
7103 }
7104
7105
7106 size_t
7107 SymbolFileDWARF::ParseTypes (const SymbolContext &sc)
7108 {
7109     // At least a compile unit must be valid
7110     assert(sc.comp_unit);
7111     size_t types_added = 0;
7112     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
7113     if (dwarf_cu)
7114     {
7115         if (sc.function)
7116         {
7117             dw_offset_t function_die_offset = sc.function->GetID();
7118             const DWARFDebugInfoEntry *func_die = dwarf_cu->GetDIEPtr(function_die_offset);
7119             if (func_die && func_die->HasChildren())
7120             {
7121                 types_added = ParseTypes(sc, dwarf_cu, func_die->GetFirstChild(), true, true);
7122             }
7123         }
7124         else
7125         {
7126             const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->DIE();
7127             if (dwarf_cu_die && dwarf_cu_die->HasChildren())
7128             {
7129                 types_added = ParseTypes(sc, dwarf_cu, dwarf_cu_die->GetFirstChild(), true, true);
7130             }
7131         }
7132     }
7133
7134     return types_added;
7135 }
7136
7137 size_t
7138 SymbolFileDWARF::ParseVariablesForContext (const SymbolContext& sc)
7139 {
7140     if (sc.comp_unit != NULL)
7141     {
7142         DWARFDebugInfo* info = DebugInfo();
7143         if (info == NULL)
7144             return 0;
7145
7146         if (sc.function)
7147         {
7148             DWARFCompileUnit* dwarf_cu = info->GetCompileUnitContainingDIE(sc.function->GetID()).get();
7149
7150             if (dwarf_cu == NULL)
7151                 return 0;
7152
7153             const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(sc.function->GetID());
7154
7155             dw_addr_t func_lo_pc = function_die->GetAttributeValueAsUnsigned (this, dwarf_cu, DW_AT_low_pc, LLDB_INVALID_ADDRESS);
7156             if (func_lo_pc != LLDB_INVALID_ADDRESS)
7157             {
7158                 const size_t num_variables = ParseVariables(sc, dwarf_cu, func_lo_pc, function_die->GetFirstChild(), true, true);
7159
7160                 // Let all blocks know they have parse all their variables
7161                 sc.function->GetBlock (false).SetDidParseVariables (true, true);
7162                 return num_variables;
7163             }
7164         }
7165         else if (sc.comp_unit)
7166         {
7167             DWARFCompileUnit* dwarf_cu = info->GetCompileUnit(sc.comp_unit->GetID()).get();
7168
7169             if (dwarf_cu == NULL)
7170                 return 0;
7171
7172             uint32_t vars_added = 0;
7173             VariableListSP variables (sc.comp_unit->GetVariableList(false));
7174
7175             if (variables.get() == NULL)
7176             {
7177                 variables.reset(new VariableList());
7178                 sc.comp_unit->SetVariableList(variables);
7179
7180                 DWARFCompileUnit* match_dwarf_cu = NULL;
7181                 const DWARFDebugInfoEntry* die = NULL;
7182                 DIEArray die_offsets;
7183                 if (m_using_apple_tables)
7184                 {
7185                     if (m_apple_names_ap.get())
7186                     {
7187                         DWARFMappedHash::DIEInfoArray hash_data_array;
7188                         if (m_apple_names_ap->AppendAllDIEsInRange (dwarf_cu->GetOffset(),
7189                                                                     dwarf_cu->GetNextCompileUnitOffset(),
7190                                                                     hash_data_array))
7191                         {
7192                             DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
7193                         }
7194                     }
7195                 }
7196                 else
7197                 {
7198                     // Index if we already haven't to make sure the compile units
7199                     // get indexed and make their global DIE index list
7200                     if (!m_indexed)
7201                         Index ();
7202
7203                     m_global_index.FindAllEntriesForCompileUnit (dwarf_cu->GetOffset(),
7204                                                                  dwarf_cu->GetNextCompileUnitOffset(),
7205                                                                  die_offsets);
7206                 }
7207
7208                 const size_t num_matches = die_offsets.size();
7209                 if (num_matches)
7210                 {
7211                     DWARFDebugInfo* debug_info = DebugInfo();
7212                     for (size_t i=0; i<num_matches; ++i)
7213                     {
7214                         const dw_offset_t die_offset = die_offsets[i];
7215                         die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &match_dwarf_cu);
7216                         if (die)
7217                         {
7218                             VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, LLDB_INVALID_ADDRESS));
7219                             if (var_sp)
7220                             {
7221                                 variables->AddVariableIfUnique (var_sp);
7222                                 ++vars_added;
7223                             }
7224                         }
7225                         else
7226                         {
7227                             if (m_using_apple_tables)
7228                             {
7229                                 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x)\n", die_offset);
7230                             }
7231                         }
7232
7233                     }
7234                 }
7235             }
7236             return vars_added;
7237         }
7238     }
7239     return 0;
7240 }
7241
7242
7243 VariableSP
7244 SymbolFileDWARF::ParseVariableDIE
7245 (
7246     const SymbolContext& sc,
7247     DWARFCompileUnit* dwarf_cu,
7248     const DWARFDebugInfoEntry *die,
7249     const lldb::addr_t func_low_pc
7250 )
7251 {
7252
7253     VariableSP var_sp (m_die_to_variable_sp[die]);
7254     if (var_sp)
7255         return var_sp;  // Already been parsed!
7256
7257     const dw_tag_t tag = die->Tag();
7258
7259     if ((tag == DW_TAG_variable) ||
7260         (tag == DW_TAG_constant) ||
7261         (tag == DW_TAG_formal_parameter && sc.function))
7262     {
7263         DWARFDebugInfoEntry::Attributes attributes;
7264         const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
7265         if (num_attributes > 0)
7266         {
7267             const char *name = NULL;
7268             const char *mangled = NULL;
7269             Declaration decl;
7270             uint32_t i;
7271             lldb::user_id_t type_uid = LLDB_INVALID_UID;
7272             DWARFExpression location;
7273             bool is_external = false;
7274             bool is_artificial = false;
7275             bool location_is_const_value_data = false;
7276             bool has_explicit_location = false;
7277             //AccessType accessibility = eAccessNone;
7278
7279             for (i=0; i<num_attributes; ++i)
7280             {
7281                 dw_attr_t attr = attributes.AttributeAtIndex(i);
7282                 DWARFFormValue form_value;
7283                 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
7284                 {
7285                     switch (attr)
7286                     {
7287                     case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
7288                     case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
7289                     case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
7290                     case DW_AT_name:        name = form_value.AsCString(&get_debug_str_data()); break;
7291                     case DW_AT_linkage_name:
7292                     case DW_AT_MIPS_linkage_name: mangled = form_value.AsCString(&get_debug_str_data()); break;
7293                     case DW_AT_type:        type_uid = form_value.Reference(dwarf_cu); break;
7294                     case DW_AT_external:    is_external = form_value.Boolean(); break;
7295                     case DW_AT_const_value:
7296                         // If we have already found a DW_AT_location attribute, ignore this attribute.
7297                         if (!has_explicit_location)
7298                         {
7299                             location_is_const_value_data = true;
7300                             // The constant value will be either a block, a data value or a string.
7301                             const DataExtractor& debug_info_data = get_debug_info_data();
7302                             if (DWARFFormValue::IsBlockForm(form_value.Form()))
7303                             {
7304                                 // Retrieve the value as a block expression.
7305                                 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
7306                                 uint32_t block_length = form_value.Unsigned();
7307                                 location.CopyOpcodeData(debug_info_data, block_offset, block_length);
7308                             }
7309                             else if (DWARFFormValue::IsDataForm(form_value.Form()))
7310                             {
7311                                 // Retrieve the value as a data expression.
7312                                 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
7313                                 uint32_t data_offset = attributes.DIEOffsetAtIndex(i);
7314                                 uint32_t data_length = fixed_form_sizes[form_value.Form()];
7315                                 location.CopyOpcodeData(debug_info_data, data_offset, data_length);
7316                             }
7317                             else
7318                             {
7319                                 // Retrieve the value as a string expression.
7320                                 if (form_value.Form() == DW_FORM_strp)
7321                                 {
7322                                     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
7323                                     uint32_t data_offset = attributes.DIEOffsetAtIndex(i);
7324                                     uint32_t data_length = fixed_form_sizes[form_value.Form()];
7325                                     location.CopyOpcodeData(debug_info_data, data_offset, data_length);
7326                                 }
7327                                 else
7328                                 {
7329                                     const char *str = form_value.AsCString(&debug_info_data);
7330                                     uint32_t string_offset = str - (const char *)debug_info_data.GetDataStart();
7331                                     uint32_t string_length = strlen(str) + 1;
7332                                     location.CopyOpcodeData(debug_info_data, string_offset, string_length);
7333                                 }
7334                             }
7335                         }
7336                         break;
7337                     case DW_AT_location:
7338                         {
7339                             location_is_const_value_data = false;
7340                             has_explicit_location = true;
7341                             if (form_value.BlockData())
7342                             {
7343                                 const DataExtractor& debug_info_data = get_debug_info_data();
7344
7345                                 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
7346                                 uint32_t block_length = form_value.Unsigned();
7347                                 location.CopyOpcodeData(get_debug_info_data(), block_offset, block_length);
7348                             }
7349                             else
7350                             {
7351                                 const DataExtractor&    debug_loc_data = get_debug_loc_data();
7352                                 const dw_offset_t debug_loc_offset = form_value.Unsigned();
7353
7354                                 size_t loc_list_length = DWARFLocationList::Size(debug_loc_data, debug_loc_offset);
7355                                 if (loc_list_length > 0)
7356                                 {
7357                                     location.CopyOpcodeData(debug_loc_data, debug_loc_offset, loc_list_length);
7358                                     assert (func_low_pc != LLDB_INVALID_ADDRESS);
7359                                     location.SetLocationListSlide (func_low_pc - dwarf_cu->GetBaseAddress());
7360                                 }
7361                             }
7362                         }
7363                         break;
7364
7365                     case DW_AT_artificial:      is_artificial = form_value.Boolean(); break;
7366                     case DW_AT_accessibility:   break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
7367                     case DW_AT_declaration:
7368                     case DW_AT_description:
7369                     case DW_AT_endianity:
7370                     case DW_AT_segment:
7371                     case DW_AT_start_scope:
7372                     case DW_AT_visibility:
7373                     default:
7374                     case DW_AT_abstract_origin:
7375                     case DW_AT_sibling:
7376                     case DW_AT_specification:
7377                         break;
7378                     }
7379                 }
7380             }
7381
7382             ValueType scope = eValueTypeInvalid;
7383
7384             const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die);
7385             dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
7386             SymbolContextScope * symbol_context_scope = NULL;
7387
7388             // DWARF doesn't specify if a DW_TAG_variable is a local, global
7389             // or static variable, so we have to do a little digging by
7390             // looking at the location of a varaible to see if it contains
7391             // a DW_OP_addr opcode _somewhere_ in the definition. I say
7392             // somewhere because clang likes to combine small global variables
7393             // into the same symbol and have locations like:
7394             // DW_OP_addr(0x1000), DW_OP_constu(2), DW_OP_plus
7395             // So if we don't have a DW_TAG_formal_parameter, we can look at
7396             // the location to see if it contains a DW_OP_addr opcode, and
7397             // then we can correctly classify  our variables.
7398             if (tag == DW_TAG_formal_parameter)
7399                 scope = eValueTypeVariableArgument;
7400             else
7401             {
7402                 bool op_error = false;
7403                 // Check if the location has a DW_OP_addr with any address value...
7404                 lldb::addr_t location_DW_OP_addr = LLDB_INVALID_ADDRESS;
7405                 if (!location_is_const_value_data)
7406                 {
7407                     location_DW_OP_addr = location.GetLocation_DW_OP_addr (0, op_error);
7408                     if (op_error)
7409                     {
7410                         StreamString strm;
7411                         location.DumpLocationForAddress (&strm, eDescriptionLevelFull, 0, 0, NULL);
7412                         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());
7413                     }
7414                 }
7415
7416                 if (location_DW_OP_addr != LLDB_INVALID_ADDRESS)
7417                 {
7418                     if (is_external)
7419                         scope = eValueTypeVariableGlobal;
7420                     else
7421                         scope = eValueTypeVariableStatic;
7422
7423
7424                     SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile ();
7425
7426                     if (debug_map_symfile)
7427                     {
7428                         // When leaving the DWARF in the .o files on darwin,
7429                         // when we have a global variable that wasn't initialized,
7430                         // the .o file might not have allocated a virtual
7431                         // address for the global variable. In this case it will
7432                         // have created a symbol for the global variable
7433                         // that is undefined/data and external and the value will
7434                         // be the byte size of the variable. When we do the
7435                         // address map in SymbolFileDWARFDebugMap we rely on
7436                         // having an address, we need to do some magic here
7437                         // so we can get the correct address for our global
7438                         // variable. The address for all of these entries
7439                         // will be zero, and there will be an undefined symbol
7440                         // in this object file, and the executable will have
7441                         // a matching symbol with a good address. So here we
7442                         // dig up the correct address and replace it in the
7443                         // location for the variable, and set the variable's
7444                         // symbol context scope to be that of the main executable
7445                         // so the file address will resolve correctly.
7446                         bool linked_oso_file_addr = false;
7447                         if (is_external && location_DW_OP_addr == 0)
7448                         {
7449                             // we have a possible uninitialized extern global
7450                             ConstString const_name(mangled ? mangled : name);
7451                             ObjectFile *debug_map_objfile = debug_map_symfile->GetObjectFile();
7452                             if (debug_map_objfile)
7453                             {
7454                                 Symtab *debug_map_symtab = debug_map_objfile->GetSymtab();
7455                                 if (debug_map_symtab)
7456                                 {
7457                                     Symbol *exe_symbol = debug_map_symtab->FindFirstSymbolWithNameAndType (const_name,
7458                                                                                                            eSymbolTypeData,
7459                                                                                                            Symtab::eDebugYes,
7460                                                                                                            Symtab::eVisibilityExtern);
7461                                     if (exe_symbol)
7462                                     {
7463                                         if (exe_symbol->ValueIsAddress())
7464                                         {
7465                                             const addr_t exe_file_addr = exe_symbol->GetAddress().GetFileAddress();
7466                                             if (exe_file_addr != LLDB_INVALID_ADDRESS)
7467                                             {
7468                                                 if (location.Update_DW_OP_addr (exe_file_addr))
7469                                                 {
7470                                                     linked_oso_file_addr = true;
7471                                                     symbol_context_scope = exe_symbol;
7472                                                 }
7473                                             }
7474                                         }
7475                                     }
7476                                 }
7477                             }
7478                         }
7479
7480                         if (!linked_oso_file_addr)
7481                         {
7482                             // The DW_OP_addr is not zero, but it contains a .o file address which
7483                             // needs to be linked up correctly.
7484                             const lldb::addr_t exe_file_addr = debug_map_symfile->LinkOSOFileAddress(this, location_DW_OP_addr);
7485                             if (exe_file_addr != LLDB_INVALID_ADDRESS)
7486                             {
7487                                 // Update the file address for this variable
7488                                 location.Update_DW_OP_addr (exe_file_addr);
7489                             }
7490                             else
7491                             {
7492                                 // Variable didn't make it into the final executable
7493                                 return var_sp;
7494                             }
7495                         }
7496                     }
7497                 }
7498                 else
7499                 {
7500                     scope = eValueTypeVariableLocal;
7501                 }
7502             }
7503
7504             if (symbol_context_scope == NULL)
7505             {
7506                 switch (parent_tag)
7507                 {
7508                 case DW_TAG_subprogram:
7509                 case DW_TAG_inlined_subroutine:
7510                 case DW_TAG_lexical_block:
7511                     if (sc.function)
7512                     {
7513                         symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
7514                         if (symbol_context_scope == NULL)
7515                             symbol_context_scope = sc.function;
7516                     }
7517                     break;
7518
7519                 default:
7520                     symbol_context_scope = sc.comp_unit;
7521                     break;
7522                 }
7523             }
7524
7525             if (symbol_context_scope)
7526             {
7527                 var_sp.reset (new Variable (MakeUserID(die->GetOffset()),
7528                                             name,
7529                                             mangled,
7530                                             SymbolFileTypeSP (new SymbolFileType(*this, type_uid)),
7531                                             scope,
7532                                             symbol_context_scope,
7533                                             &decl,
7534                                             location,
7535                                             is_external,
7536                                             is_artificial));
7537
7538                 var_sp->SetLocationIsConstantValueData (location_is_const_value_data);
7539             }
7540             else
7541             {
7542                 // Not ready to parse this variable yet. It might be a global
7543                 // or static variable that is in a function scope and the function
7544                 // in the symbol context wasn't filled in yet
7545                 return var_sp;
7546             }
7547         }
7548         // Cache var_sp even if NULL (the variable was just a specification or
7549         // was missing vital information to be able to be displayed in the debugger
7550         // (missing location due to optimization, etc)) so we don't re-parse
7551         // this DIE over and over later...
7552         m_die_to_variable_sp[die] = var_sp;
7553     }
7554     return var_sp;
7555 }
7556
7557
7558 const DWARFDebugInfoEntry *
7559 SymbolFileDWARF::FindBlockContainingSpecification (dw_offset_t func_die_offset,
7560                                                    dw_offset_t spec_block_die_offset,
7561                                                    DWARFCompileUnit **result_die_cu_handle)
7562 {
7563     // Give the concrete function die specified by "func_die_offset", find the
7564     // concrete block whose DW_AT_specification or DW_AT_abstract_origin points
7565     // to "spec_block_die_offset"
7566     DWARFDebugInfo* info = DebugInfo();
7567
7568     const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint(func_die_offset, result_die_cu_handle);
7569     if (die)
7570     {
7571         assert (*result_die_cu_handle);
7572         return FindBlockContainingSpecification (*result_die_cu_handle, die, spec_block_die_offset, result_die_cu_handle);
7573     }
7574     return NULL;
7575 }
7576
7577
7578 const DWARFDebugInfoEntry *
7579 SymbolFileDWARF::FindBlockContainingSpecification(DWARFCompileUnit* dwarf_cu,
7580                                                   const DWARFDebugInfoEntry *die,
7581                                                   dw_offset_t spec_block_die_offset,
7582                                                   DWARFCompileUnit **result_die_cu_handle)
7583 {
7584     if (die)
7585     {
7586         switch (die->Tag())
7587         {
7588         case DW_TAG_subprogram:
7589         case DW_TAG_inlined_subroutine:
7590         case DW_TAG_lexical_block:
7591             {
7592                 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_specification, DW_INVALID_OFFSET) == spec_block_die_offset)
7593                 {
7594                     *result_die_cu_handle = dwarf_cu;
7595                     return die;
7596                 }
7597
7598                 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_abstract_origin, DW_INVALID_OFFSET) == spec_block_die_offset)
7599                 {
7600                     *result_die_cu_handle = dwarf_cu;
7601                     return die;
7602                 }
7603             }
7604             break;
7605         }
7606
7607         // Give the concrete function die specified by "func_die_offset", find the
7608         // concrete block whose DW_AT_specification or DW_AT_abstract_origin points
7609         // to "spec_block_die_offset"
7610         for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); child_die != NULL; child_die = child_die->GetSibling())
7611         {
7612             const DWARFDebugInfoEntry *result_die = FindBlockContainingSpecification (dwarf_cu,
7613                                                                                       child_die,
7614                                                                                       spec_block_die_offset,
7615                                                                                       result_die_cu_handle);
7616             if (result_die)
7617                 return result_die;
7618         }
7619     }
7620
7621     *result_die_cu_handle = NULL;
7622     return NULL;
7623 }
7624
7625 size_t
7626 SymbolFileDWARF::ParseVariables
7627 (
7628     const SymbolContext& sc,
7629     DWARFCompileUnit* dwarf_cu,
7630     const lldb::addr_t func_low_pc,
7631     const DWARFDebugInfoEntry *orig_die,
7632     bool parse_siblings,
7633     bool parse_children,
7634     VariableList* cc_variable_list
7635 )
7636 {
7637     if (orig_die == NULL)
7638         return 0;
7639
7640     VariableListSP variable_list_sp;
7641
7642     size_t vars_added = 0;
7643     const DWARFDebugInfoEntry *die = orig_die;
7644     while (die != NULL)
7645     {
7646         dw_tag_t tag = die->Tag();
7647
7648         // Check to see if we have already parsed this variable or constant?
7649         if (m_die_to_variable_sp[die])
7650         {
7651             if (cc_variable_list)
7652                 cc_variable_list->AddVariableIfUnique (m_die_to_variable_sp[die]);
7653         }
7654         else
7655         {
7656             // We haven't already parsed it, lets do that now.
7657             if ((tag == DW_TAG_variable) ||
7658                 (tag == DW_TAG_constant) ||
7659                 (tag == DW_TAG_formal_parameter && sc.function))
7660             {
7661                 if (variable_list_sp.get() == NULL)
7662                 {
7663                     const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(orig_die);
7664                     dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
7665                     switch (parent_tag)
7666                     {
7667                         case DW_TAG_compile_unit:
7668                             if (sc.comp_unit != NULL)
7669                             {
7670                                 variable_list_sp = sc.comp_unit->GetVariableList(false);
7671                                 if (variable_list_sp.get() == NULL)
7672                                 {
7673                                     variable_list_sp.reset(new VariableList());
7674                                     sc.comp_unit->SetVariableList(variable_list_sp);
7675                                 }
7676                             }
7677                             else
7678                             {
7679                                 GetObjectFile()->GetModule()->ReportError ("parent 0x%8.8" PRIx64 " %s with no valid compile unit in symbol context for 0x%8.8" PRIx64 " %s.\n",
7680                                                                            MakeUserID(sc_parent_die->GetOffset()),
7681                                                                            DW_TAG_value_to_name (parent_tag),
7682                                                                            MakeUserID(orig_die->GetOffset()),
7683                                                                            DW_TAG_value_to_name (orig_die->Tag()));
7684                             }
7685                             break;
7686
7687                         case DW_TAG_subprogram:
7688                         case DW_TAG_inlined_subroutine:
7689                         case DW_TAG_lexical_block:
7690                             if (sc.function != NULL)
7691                             {
7692                                 // Check to see if we already have parsed the variables for the given scope
7693
7694                                 Block *block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
7695                                 if (block == NULL)
7696                                 {
7697                                     // This must be a specification or abstract origin with
7698                                     // a concrete block couterpart in the current function. We need
7699                                     // to find the concrete block so we can correctly add the
7700                                     // variable to it
7701                                     DWARFCompileUnit *concrete_block_die_cu = dwarf_cu;
7702                                     const DWARFDebugInfoEntry *concrete_block_die = FindBlockContainingSpecification (sc.function->GetID(),
7703                                                                                                                       sc_parent_die->GetOffset(),
7704                                                                                                                       &concrete_block_die_cu);
7705                                     if (concrete_block_die)
7706                                         block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(concrete_block_die->GetOffset()));
7707                                 }
7708
7709                                 if (block != NULL)
7710                                 {
7711                                     const bool can_create = false;
7712                                     variable_list_sp = block->GetBlockVariableList (can_create);
7713                                     if (variable_list_sp.get() == NULL)
7714                                     {
7715                                         variable_list_sp.reset(new VariableList());
7716                                         block->SetVariableList(variable_list_sp);
7717                                     }
7718                                 }
7719                             }
7720                             break;
7721
7722                         default:
7723                              GetObjectFile()->GetModule()->ReportError ("didn't find appropriate parent DIE for variable list for 0x%8.8" PRIx64 " %s.\n",
7724                                                                         MakeUserID(orig_die->GetOffset()),
7725                                                                         DW_TAG_value_to_name (orig_die->Tag()));
7726                             break;
7727                     }
7728                 }
7729
7730                 if (variable_list_sp)
7731                 {
7732                     VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, func_low_pc));
7733                     if (var_sp)
7734                     {
7735                         variable_list_sp->AddVariableIfUnique (var_sp);
7736                         if (cc_variable_list)
7737                             cc_variable_list->AddVariableIfUnique (var_sp);
7738                         ++vars_added;
7739                     }
7740                 }
7741             }
7742         }
7743
7744         bool skip_children = (sc.function == NULL && tag == DW_TAG_subprogram);
7745
7746         if (!skip_children && parse_children && die->HasChildren())
7747         {
7748             vars_added += ParseVariables(sc, dwarf_cu, func_low_pc, die->GetFirstChild(), true, true, cc_variable_list);
7749         }
7750
7751         if (parse_siblings)
7752             die = die->GetSibling();
7753         else
7754             die = NULL;
7755     }
7756     return vars_added;
7757 }
7758
7759 //------------------------------------------------------------------
7760 // PluginInterface protocol
7761 //------------------------------------------------------------------
7762 ConstString
7763 SymbolFileDWARF::GetPluginName()
7764 {
7765     return GetPluginNameStatic();
7766 }
7767
7768 uint32_t
7769 SymbolFileDWARF::GetPluginVersion()
7770 {
7771     return 1;
7772 }
7773
7774 void
7775 SymbolFileDWARF::CompleteTagDecl (void *baton, clang::TagDecl *decl)
7776 {
7777     SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7778     ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl);
7779     if (clang_type)
7780         symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type);
7781 }
7782
7783 void
7784 SymbolFileDWARF::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *decl)
7785 {
7786     SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7787     ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl);
7788     if (clang_type)
7789         symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type);
7790 }
7791
7792 void
7793 SymbolFileDWARF::DumpIndexes ()
7794 {
7795     StreamFile s(stdout, false);
7796
7797     s.Printf ("DWARF index for (%s) '%s':",
7798               GetObjectFile()->GetModule()->GetArchitecture().GetArchitectureName(),
7799               GetObjectFile()->GetFileSpec().GetPath().c_str());
7800     s.Printf("\nFunction basenames:\n");    m_function_basename_index.Dump (&s);
7801     s.Printf("\nFunction fullnames:\n");    m_function_fullname_index.Dump (&s);
7802     s.Printf("\nFunction methods:\n");      m_function_method_index.Dump (&s);
7803     s.Printf("\nFunction selectors:\n");    m_function_selector_index.Dump (&s);
7804     s.Printf("\nObjective C class selectors:\n");    m_objc_class_selectors_index.Dump (&s);
7805     s.Printf("\nGlobals and statics:\n");   m_global_index.Dump (&s);
7806     s.Printf("\nTypes:\n");                 m_type_index.Dump (&s);
7807     s.Printf("\nNamepaces:\n");             m_namespace_index.Dump (&s);
7808 }
7809
7810 void
7811 SymbolFileDWARF::SearchDeclContext (const clang::DeclContext *decl_context,
7812                                     const char *name,
7813                                     llvm::SmallVectorImpl <clang::NamedDecl *> *results)
7814 {
7815     DeclContextToDIEMap::iterator iter = m_decl_ctx_to_die.find(decl_context);
7816
7817     if (iter == m_decl_ctx_to_die.end())
7818         return;
7819
7820     for (DIEPointerSet::iterator pos = iter->second.begin(), end = iter->second.end(); pos != end; ++pos)
7821     {
7822         const DWARFDebugInfoEntry *context_die = *pos;
7823
7824         if (!results)
7825             return;
7826
7827         DWARFDebugInfo* info = DebugInfo();
7828
7829         DIEArray die_offsets;
7830
7831         DWARFCompileUnit* dwarf_cu = NULL;
7832         const DWARFDebugInfoEntry* die = NULL;
7833
7834         if (m_using_apple_tables)
7835         {
7836             if (m_apple_types_ap.get())
7837                 m_apple_types_ap->FindByName (name, die_offsets);
7838         }
7839         else
7840         {
7841             if (!m_indexed)
7842                 Index ();
7843
7844             m_type_index.Find (ConstString(name), die_offsets);
7845         }
7846
7847         const size_t num_matches = die_offsets.size();
7848
7849         if (num_matches)
7850         {
7851             for (size_t i = 0; i < num_matches; ++i)
7852             {
7853                 const dw_offset_t die_offset = die_offsets[i];
7854                 die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
7855
7856                 if (die->GetParent() != context_die)
7857                     continue;
7858
7859                 Type *matching_type = ResolveType (dwarf_cu, die);
7860
7861                 clang::QualType qual_type = matching_type->GetClangForwardType().GetQualType();
7862
7863                 if (const clang::TagType *tag_type = llvm::dyn_cast<clang::TagType>(qual_type.getTypePtr()))
7864                 {
7865                     clang::TagDecl *tag_decl = tag_type->getDecl();
7866                     results->push_back(tag_decl);
7867                 }
7868                 else if (const clang::TypedefType *typedef_type = llvm::dyn_cast<clang::TypedefType>(qual_type.getTypePtr()))
7869                 {
7870                     clang::TypedefNameDecl *typedef_decl = typedef_type->getDecl();
7871                     results->push_back(typedef_decl);
7872                 }
7873             }
7874         }
7875     }
7876 }
7877
7878 void
7879 SymbolFileDWARF::FindExternalVisibleDeclsByName (void *baton,
7880                                                  const clang::DeclContext *decl_context,
7881                                                  clang::DeclarationName decl_name,
7882                                                  llvm::SmallVectorImpl <clang::NamedDecl *> *results)
7883 {
7884
7885     switch (decl_context->getDeclKind())
7886     {
7887     case clang::Decl::Namespace:
7888     case clang::Decl::TranslationUnit:
7889         {
7890             SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7891             symbol_file_dwarf->SearchDeclContext (decl_context, decl_name.getAsString().c_str(), results);
7892         }
7893         break;
7894     default:
7895         break;
7896     }
7897 }
7898
7899 bool
7900 SymbolFileDWARF::LayoutRecordType (void *baton,
7901                                    const clang::RecordDecl *record_decl,
7902                                    uint64_t &size,
7903                                    uint64_t &alignment,
7904                                    llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets,
7905                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
7906                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets)
7907 {
7908     SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7909     return symbol_file_dwarf->LayoutRecordType (record_decl, size, alignment, field_offsets, base_offsets, vbase_offsets);
7910 }
7911
7912
7913 bool
7914 SymbolFileDWARF::LayoutRecordType (const clang::RecordDecl *record_decl,
7915                                    uint64_t &bit_size,
7916                                    uint64_t &alignment,
7917                                    llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets,
7918                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
7919                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets)
7920 {
7921     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
7922     RecordDeclToLayoutMap::iterator pos = m_record_decl_to_layout_map.find (record_decl);
7923     bool success = false;
7924     base_offsets.clear();
7925     vbase_offsets.clear();
7926     if (pos != m_record_decl_to_layout_map.end())
7927     {
7928         bit_size = pos->second.bit_size;
7929         alignment = pos->second.alignment;
7930         field_offsets.swap(pos->second.field_offsets);
7931         base_offsets.swap (pos->second.base_offsets);
7932         vbase_offsets.swap (pos->second.vbase_offsets);
7933         m_record_decl_to_layout_map.erase(pos);
7934         success = true;
7935     }
7936     else
7937     {
7938         bit_size = 0;
7939         alignment = 0;
7940         field_offsets.clear();
7941     }
7942
7943     if (log)
7944         GetObjectFile()->GetModule()->LogMessage (log,
7945                                                   "SymbolFileDWARF::LayoutRecordType (record_decl = %p, bit_size = %" PRIu64 ", alignment = %" PRIu64 ", field_offsets[%u],base_offsets[%u], vbase_offsets[%u]) success = %i",
7946                                                   record_decl,
7947                                                   bit_size,
7948                                                   alignment,
7949                                                   (uint32_t)field_offsets.size(),
7950                                                   (uint32_t)base_offsets.size(),
7951                                                   (uint32_t)vbase_offsets.size(),
7952                                                   success);
7953     return success;
7954 }
7955
7956
7957 SymbolFileDWARFDebugMap *
7958 SymbolFileDWARF::GetDebugMapSymfile ()
7959 {
7960     if (m_debug_map_symfile == NULL && !m_debug_map_module_wp.expired())
7961     {
7962         lldb::ModuleSP module_sp (m_debug_map_module_wp.lock());
7963         if (module_sp)
7964         {
7965             SymbolVendor *sym_vendor = module_sp->GetSymbolVendor();
7966             if (sym_vendor)
7967                 m_debug_map_symfile = (SymbolFileDWARFDebugMap *)sym_vendor->GetSymbolFile();
7968         }
7969     }
7970     return m_debug_map_symfile;
7971 }
7972
7973