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 #include <ctype.h>
  70 #include <string.h>
  71
  72 //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN
  73
  74 #ifdef ENABLE_DEBUG_PRINTF
  75 #include <stdio.h>
  76 #define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__)
  77 #else
  78 #define DEBUG_PRINTF(fmt, ...)
  79 #endif
  80
  81 #define DIE_IS_BEING_PARSED ((lldb_private::Type*)1)
  82
  83 using namespace lldb;
  84 using namespace lldb_private;
  85
  86 //static inline bool
  87 //child_requires_parent_class_union_or_struct_to_be_completed (dw_tag_t tag)
  88 //{
  89 //    switch (tag)
  90 //    {
  91 //    default:
  92 //        break;
  93 //    case DW_TAG_subprogram:
  94 //    case DW_TAG_inlined_subroutine:
  95 //    case DW_TAG_class_type:
  96 //    case DW_TAG_structure_type:
  97 //    case DW_TAG_union_type:
  98 //        return true;
  99 //    }
 100 //    return false;
 101 //}
 102 //
 103 static AccessType
 104 DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility)
 105 {
 106     switch (dwarf_accessibility)
 107     {
 108         case DW_ACCESS_public:      return eAccessPublic;
 109         case DW_ACCESS_private:     return eAccessPrivate;
 110         case DW_ACCESS_protected:   return eAccessProtected;
 111         default:                    break;
 112     }
 113     return eAccessNone;
 114 }
 115
 116 static const char*
 117 removeHostnameFromPathname(const char* path_from_dwarf)
 118 {
 119     if (!path_from_dwarf || !path_from_dwarf[0])
 120     {
 121         return path_from_dwarf;
 122     }
 123
 124     const char *colon_pos = strchr(path_from_dwarf, ':');
 125     if (!colon_pos)
 126     {
 127         return path_from_dwarf;
 128     }
 129
 130     // check whether we have a windows path, and so the first character
 131     // is a drive-letter not a hostname.
 132     if (
 133         colon_pos == path_from_dwarf + 1 &&
 134         isalpha(*path_from_dwarf) &&
 135         strlen(path_from_dwarf) > 2 &&
 136         '\\' == path_from_dwarf[2])
 137     {
 138         return path_from_dwarf;
 139     }
 140
 141     return colon_pos + 1;
 142 }
 143
 144 #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE)
 145
 146 class DIEStack
 147 {
 148 public:
 149
 150     void Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
 151     {
 152         m_dies.push_back (DIEInfo(cu, die));
 153     }
 154
 155
 156     void LogDIEs (Log *log, SymbolFileDWARF *dwarf)
 157     {
 158         StreamString log_strm;
 159         const size_t n = m_dies.size();
 160         log_strm.Printf("DIEStack[%" PRIu64 "]:\n", (uint64_t)n);
 161         for (size_t i=0; i<n; i++)
 162         {
 163             DWARFCompileUnit *cu = m_dies[i].cu;
 164             const DWARFDebugInfoEntry *die = m_dies[i].die;
 165             std::string qualified_name;
 166             die->GetQualifiedName(dwarf, cu, qualified_name);
 167             log_strm.Printf ("[%" PRIu64 "] 0x%8.8x: %s name='%s'\n",
 168                              (uint64_t)i,
 169                              die->GetOffset(),
 170                              DW_TAG_value_to_name(die->Tag()),
 171                              qualified_name.c_str());
 172         }
 173         log->PutCString(log_strm.GetData());
 174     }
 175     void Pop ()
 176     {
 177         m_dies.pop_back();
 178     }
 179
 180     class ScopedPopper
 181     {
 182     public:
 183         ScopedPopper (DIEStack &die_stack) :
 184             m_die_stack (die_stack),
 185             m_valid (false)
 186         {
 187         }
 188
 189         void
 190         Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
 191         {
 192             m_valid = true;
 193             m_die_stack.Push (cu, die);
 194         }
 195
 196         ~ScopedPopper ()
 197         {
 198             if (m_valid)
 199                 m_die_stack.Pop();
 200         }
 201
 202
 203
 204     protected:
 205         DIEStack &m_die_stack;
 206         bool m_valid;
 207     };
 208
 209 protected:
 210     struct DIEInfo {
 211         DIEInfo (DWARFCompileUnit *c, const DWARFDebugInfoEntry *d) :
 212             cu(c),
 213             die(d)
 214         {
 215         }
 216         DWARFCompileUnit *cu;
 217         const DWARFDebugInfoEntry *die;
 218     };
 219     typedef std::vector<DIEInfo> Stack;
 220     Stack m_dies;
 221 };
 222 #endif
 223
 224 void
 225 SymbolFileDWARF::Initialize()
 226 {
 227     LogChannelDWARF::Initialize();
 228     PluginManager::RegisterPlugin (GetPluginNameStatic(),
 229                                    GetPluginDescriptionStatic(),
 230                                    CreateInstance);
 231 }
 232
 233 void
 234 SymbolFileDWARF::Terminate()
 235 {
 236     PluginManager::UnregisterPlugin (CreateInstance);
 237     LogChannelDWARF::Initialize();
 238 }
 239
 240
 241 lldb_private::ConstString
 242 SymbolFileDWARF::GetPluginNameStatic()
 243 {
 244     static ConstString g_name("dwarf");
 245     return g_name;
 246 }
 247
 248 const char *
 249 SymbolFileDWARF::GetPluginDescriptionStatic()
 250 {
 251     return "DWARF and DWARF3 debug symbol file reader.";
 252 }
 253
 254
 255 SymbolFile*
 256 SymbolFileDWARF::CreateInstance (ObjectFile* obj_file)
 257 {
 258     return new SymbolFileDWARF(obj_file);
 259 }
 260
 261 TypeList *
 262 SymbolFileDWARF::GetTypeList ()
 263 {
 264     if (GetDebugMapSymfile ())
 265         return m_debug_map_symfile->GetTypeList();
 266     return m_obj_file->GetModule()->GetTypeList();
 267
 268 }
 269 void
 270 SymbolFileDWARF::GetTypes (DWARFCompileUnit* cu,
 271                            const DWARFDebugInfoEntry *die,
 272                            dw_offset_t min_die_offset,
 273                            dw_offset_t max_die_offset,
 274                            uint32_t type_mask,
 275                            TypeSet &type_set)
 276 {
 277     if (cu)
 278     {
 279         if (die)
 280         {
 281             const dw_offset_t die_offset = die->GetOffset();
 282
 283             if (die_offset >= max_die_offset)
 284                 return;
 285
 286             if (die_offset >= min_die_offset)
 287             {
 288                 const dw_tag_t tag = die->Tag();
 289
 290                 bool add_type = false;
 291
 292                 switch (tag)
 293                 {
 294                     case DW_TAG_array_type:         add_type = (type_mask & eTypeClassArray         ) != 0; break;
 295                     case DW_TAG_unspecified_type:
 296                     case DW_TAG_base_type:          add_type = (type_mask & eTypeClassBuiltin       ) != 0; break;
 297                     case DW_TAG_class_type:         add_type = (type_mask & eTypeClassClass         ) != 0; break;
 298                     case DW_TAG_structure_type:     add_type = (type_mask & eTypeClassStruct        ) != 0; break;
 299                     case DW_TAG_union_type:         add_type = (type_mask & eTypeClassUnion         ) != 0; break;
 300                     case DW_TAG_enumeration_type:   add_type = (type_mask & eTypeClassEnumeration   ) != 0; break;
 301                     case DW_TAG_subroutine_type:
 302                     case DW_TAG_subprogram:
 303                     case DW_TAG_inlined_subroutine: add_type = (type_mask & eTypeClassFunction      ) != 0; break;
 304                     case DW_TAG_pointer_type:       add_type = (type_mask & eTypeClassPointer       ) != 0; break;
 305                     case DW_TAG_rvalue_reference_type:
 306                     case DW_TAG_reference_type:     add_type = (type_mask & eTypeClassReference     ) != 0; break;
 307                     case DW_TAG_typedef:            add_type = (type_mask & eTypeClassTypedef       ) != 0; break;
 308                     case DW_TAG_ptr_to_member_type: add_type = (type_mask & eTypeClassMemberPointer ) != 0; break;
 309                 }
 310
 311                 if (add_type)
 312                 {
 313                     const bool assert_not_being_parsed = true;
 314                     Type *type = ResolveTypeUID (cu, die, assert_not_being_parsed);
 315                     if (type)
 316                     {
 317                         if (type_set.find(type) == type_set.end())
 318                             type_set.insert(type);
 319                     }
 320                 }
 321             }
 322
 323             for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild();
 324                  child_die != NULL;
 325                  child_die = child_die->GetSibling())
 326             {
 327                 GetTypes (cu, child_die, min_die_offset, max_die_offset, type_mask, type_set);
 328             }
 329         }
 330     }
 331 }
 332
 333 size_t
 334 SymbolFileDWARF::GetTypes (SymbolContextScope *sc_scope,
 335                            uint32_t type_mask,
 336                            TypeList &type_list)
 337
 338 {
 339     TypeSet type_set;
 340
 341     CompileUnit *comp_unit = NULL;
 342     DWARFCompileUnit* dwarf_cu = NULL;
 343     if (sc_scope)
 344         comp_unit = sc_scope->CalculateSymbolContextCompileUnit();
 345
 346     if (comp_unit)
 347     {
 348         dwarf_cu = GetDWARFCompileUnit(comp_unit);
 349         if (dwarf_cu == 0)
 350             return 0;
 351         GetTypes (dwarf_cu,
 352                   dwarf_cu->DIE(),
 353                   dwarf_cu->GetOffset(),
 354                   dwarf_cu->GetNextCompileUnitOffset(),
 355                   type_mask,
 356                   type_set);
 357     }
 358     else
 359     {
 360         DWARFDebugInfo* info = DebugInfo();
 361         if (info)
 362         {
 363             const size_t num_cus = info->GetNumCompileUnits();
 364             for (size_t cu_idx=0; cu_idx<num_cus; ++cu_idx)
 365             {
 366                 dwarf_cu = info->GetCompileUnitAtIndex(cu_idx);
 367                 if (dwarf_cu)
 368                 {
 369                     GetTypes (dwarf_cu,
 370                               dwarf_cu->DIE(),
 371                               0,
 372                               UINT32_MAX,
 373                               type_mask,
 374                               type_set);
 375                 }
 376             }
 377         }
 378     }
 379 //    if (m_using_apple_tables)
 380 //    {
 381 //        DWARFMappedHash::MemoryTable *apple_types = m_apple_types_ap.get();
 382 //        if (apple_types)
 383 //        {
 384 //            apple_types->ForEach([this, &type_set, apple_types, type_mask](const DWARFMappedHash::DIEInfoArray &die_info_array) -> bool {
 385 //
 386 //                for (auto die_info: die_info_array)
 387 //                {
 388 //                    bool add_type = TagMatchesTypeMask (type_mask, 0);
 389 //                    if (!add_type)
 390 //                    {
 391 //                        dw_tag_t tag = die_info.tag;
 392 //                        if (tag == 0)
 393 //                        {
 394 //                            const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtr(die_info.offset, NULL);
 395 //                            tag = die->Tag();
 396 //                        }
 397 //                        add_type = TagMatchesTypeMask (type_mask, tag);
 398 //                    }
 399 //                    if (add_type)
 400 //                    {
 401 //                        Type *type = ResolveTypeUID(die_info.offset);
 402 //
 403 //                        if (type_set.find(type) == type_set.end())
 404 //                            type_set.insert(type);
 405 //                    }
 406 //                }
 407 //                return true; // Keep iterating
 408 //            });
 409 //        }
 410 //    }
 411 //    else
 412 //    {
 413 //        if (!m_indexed)
 414 //            Index ();
 415 //
 416 //        m_type_index.ForEach([this, &type_set, type_mask](const char *name, uint32_t die_offset) -> bool {
 417 //
 418 //            bool add_type = TagMatchesTypeMask (type_mask, 0);
 419 //
 420 //            if (!add_type)
 421 //            {
 422 //                const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtr(die_offset, NULL);
 423 //                if (die)
 424 //                {
 425 //                    const dw_tag_t tag = die->Tag();
 426 //                    add_type = TagMatchesTypeMask (type_mask, tag);
 427 //                }
 428 //            }
 429 //
 430 //            if (add_type)
 431 //            {
 432 //                Type *type = ResolveTypeUID(die_offset);
 433 //
 434 //                if (type_set.find(type) == type_set.end())
 435 //                    type_set.insert(type);
 436 //            }
 437 //            return true; // Keep iterating
 438 //        });
 439 //    }
 440
 441     std::set<ClangASTType> clang_type_set;
 442     size_t num_types_added = 0;
 443     for (Type *type : type_set)
 444     {
 445         ClangASTType clang_type = type->GetClangForwardType();
 446         if (clang_type_set.find(clang_type) == clang_type_set.end())
 447         {
 448             clang_type_set.insert(clang_type);
 449             type_list.Insert (type->shared_from_this());
 450             ++num_types_added;
 451         }
 452     }
 453     return num_types_added;
 454 }
 455
 456
 457 //----------------------------------------------------------------------
 458 // Gets the first parent that is a lexical block, function or inlined
 459 // subroutine, or compile unit.
 460 //----------------------------------------------------------------------
 461 static const DWARFDebugInfoEntry *
 462 GetParentSymbolContextDIE(const DWARFDebugInfoEntry *child_die)
 463 {
 464     const DWARFDebugInfoEntry *die;
 465     for (die = child_die->GetParent(); die != NULL; die = die->GetParent())
 466     {
 467         dw_tag_t tag = die->Tag();
 468
 469         switch (tag)
 470         {
 471         case DW_TAG_compile_unit:
 472         case DW_TAG_subprogram:
 473         case DW_TAG_inlined_subroutine:
 474         case DW_TAG_lexical_block:
 475             return die;
 476         }
 477     }
 478     return NULL;
 479 }
 480
 481
 482 SymbolFileDWARF::SymbolFileDWARF(ObjectFile* objfile) :
 483     SymbolFile (objfile),
 484     UserID (0),  // Used by SymbolFileDWARFDebugMap to when this class parses .o files to contain the .o file index/ID
 485     m_debug_map_module_wp (),
 486     m_debug_map_symfile (NULL),
 487     m_clang_tu_decl (NULL),
 488     m_flags(),
 489     m_data_debug_abbrev (),
 490     m_data_debug_aranges (),
 491     m_data_debug_frame (),
 492     m_data_debug_info (),
 493     m_data_debug_line (),
 494     m_data_debug_loc (),
 495     m_data_debug_ranges (),
 496     m_data_debug_str (),
 497     m_data_apple_names (),
 498     m_data_apple_types (),
 499     m_data_apple_namespaces (),
 500     m_abbr(),
 501     m_info(),
 502     m_line(),
 503     m_apple_names_ap (),
 504     m_apple_types_ap (),
 505     m_apple_namespaces_ap (),
 506     m_apple_objc_ap (),
 507     m_function_basename_index(),
 508     m_function_fullname_index(),
 509     m_function_method_index(),
 510     m_function_selector_index(),
 511     m_objc_class_selectors_index(),
 512     m_global_index(),
 513     m_type_index(),
 514     m_namespace_index(),
 515     m_indexed (false),
 516     m_is_external_ast_source (false),
 517     m_using_apple_tables (false),
 518     m_supports_DW_AT_APPLE_objc_complete_type (eLazyBoolCalculate),
 519     m_ranges(),
 520     m_unique_ast_type_map ()
 521 {
 522 }
 523
 524 SymbolFileDWARF::~SymbolFileDWARF()
 525 {
 526     if (m_is_external_ast_source)
 527     {
 528         ModuleSP module_sp (m_obj_file->GetModule());
 529         if (module_sp)
 530             module_sp->GetClangASTContext().RemoveExternalSource ();
 531     }
 532 }
 533
 534 static const ConstString &
 535 GetDWARFMachOSegmentName ()
 536 {
 537     static ConstString g_dwarf_section_name ("__DWARF");
 538     return g_dwarf_section_name;
 539 }
 540
 541 UniqueDWARFASTTypeMap &
 542 SymbolFileDWARF::GetUniqueDWARFASTTypeMap ()
 543 {
 544     if (GetDebugMapSymfile ())
 545         return m_debug_map_symfile->GetUniqueDWARFASTTypeMap ();
 546     return m_unique_ast_type_map;
 547 }
 548
 549 ClangASTContext &
 550 SymbolFileDWARF::GetClangASTContext ()
 551 {
 552     if (GetDebugMapSymfile ())
 553         return m_debug_map_symfile->GetClangASTContext ();
 554
 555     ClangASTContext &ast = m_obj_file->GetModule()->GetClangASTContext();
 556     if (!m_is_external_ast_source)
 557     {
 558         m_is_external_ast_source = true;
 559         llvm::IntrusiveRefCntPtr<clang::ExternalASTSource> ast_source_ap (
 560             new ClangExternalASTSourceCallbacks (SymbolFileDWARF::CompleteTagDecl,
 561                                                  SymbolFileDWARF::CompleteObjCInterfaceDecl,
 562                                                  SymbolFileDWARF::FindExternalVisibleDeclsByName,
 563                                                  SymbolFileDWARF::LayoutRecordType,
 564                                                  this));
 565         ast.SetExternalSource (ast_source_ap);
 566     }
 567     return ast;
 568 }
 569
 570 void
 571 SymbolFileDWARF::InitializeObject()
 572 {
 573     // Install our external AST source callbacks so we can complete Clang types.
 574     ModuleSP module_sp (m_obj_file->GetModule());
 575     if (module_sp)
 576     {
 577         const SectionList *section_list = module_sp->GetSectionList();
 578
 579         const Section* section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get();
 580
 581         // Memory map the DWARF mach-o segment so we have everything mmap'ed
 582         // to keep our heap memory usage down.
 583         if (section)
 584             m_obj_file->MemoryMapSectionData(section, m_dwarf_data);
 585     }
 586     get_apple_names_data();
 587     if (m_data_apple_names.GetByteSize() > 0)
 588     {
 589         m_apple_names_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_names, get_debug_str_data(), ".apple_names"));
 590         if (m_apple_names_ap->IsValid())
 591             m_using_apple_tables = true;
 592         else
 593             m_apple_names_ap.reset();
 594     }
 595     get_apple_types_data();
 596     if (m_data_apple_types.GetByteSize() > 0)
 597     {
 598         m_apple_types_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_types, get_debug_str_data(), ".apple_types"));
 599         if (m_apple_types_ap->IsValid())
 600             m_using_apple_tables = true;
 601         else
 602             m_apple_types_ap.reset();
 603     }
 604
 605     get_apple_namespaces_data();
 606     if (m_data_apple_namespaces.GetByteSize() > 0)
 607     {
 608         m_apple_namespaces_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_namespaces, get_debug_str_data(), ".apple_namespaces"));
 609         if (m_apple_namespaces_ap->IsValid())
 610             m_using_apple_tables = true;
 611         else
 612             m_apple_namespaces_ap.reset();
 613     }
 614
 615     get_apple_objc_data();
 616     if (m_data_apple_objc.GetByteSize() > 0)
 617     {
 618         m_apple_objc_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_objc, get_debug_str_data(), ".apple_objc"));
 619         if (m_apple_objc_ap->IsValid())
 620             m_using_apple_tables = true;
 621         else
 622             m_apple_objc_ap.reset();
 623     }
 624 }
 625
 626 bool
 627 SymbolFileDWARF::SupportedVersion(uint16_t version)
 628 {
 629     return version == 2 || version == 3 || version == 4;
 630 }
 631
 632 uint32_t
 633 SymbolFileDWARF::CalculateAbilities ()
 634 {
 635     uint32_t abilities = 0;
 636     if (m_obj_file != NULL)
 637     {
 638         const Section* section = NULL;
 639         const SectionList *section_list = m_obj_file->GetSectionList();
 640         if (section_list == NULL)
 641             return 0;
 642
 643         uint64_t debug_abbrev_file_size = 0;
 644         uint64_t debug_info_file_size = 0;
 645         uint64_t debug_line_file_size = 0;
 646
 647         section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get();
 648
 649         if (section)
 650             section_list = &section->GetChildren ();
 651
 652         section = section_list->FindSectionByType (eSectionTypeDWARFDebugInfo, true).get();
 653         if (section != NULL)
 654         {
 655             debug_info_file_size = section->GetFileSize();
 656
 657             section = section_list->FindSectionByType (eSectionTypeDWARFDebugAbbrev, true).get();
 658             if (section)
 659                 debug_abbrev_file_size = section->GetFileSize();
 660             else
 661                 m_flags.Set (flagsGotDebugAbbrevData);
 662
 663             section = section_list->FindSectionByType (eSectionTypeDWARFDebugAranges, true).get();
 664             if (!section)
 665                 m_flags.Set (flagsGotDebugArangesData);
 666
 667             section = section_list->FindSectionByType (eSectionTypeDWARFDebugFrame, true).get();
 668             if (!section)
 669                 m_flags.Set (flagsGotDebugFrameData);
 670
 671             section = section_list->FindSectionByType (eSectionTypeDWARFDebugLine, true).get();
 672             if (section)
 673                 debug_line_file_size = section->GetFileSize();
 674             else
 675                 m_flags.Set (flagsGotDebugLineData);
 676
 677             section = section_list->FindSectionByType (eSectionTypeDWARFDebugLoc, true).get();
 678             if (!section)
 679                 m_flags.Set (flagsGotDebugLocData);
 680
 681             section = section_list->FindSectionByType (eSectionTypeDWARFDebugMacInfo, true).get();
 682             if (!section)
 683                 m_flags.Set (flagsGotDebugMacInfoData);
 684
 685             section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubNames, true).get();
 686             if (!section)
 687                 m_flags.Set (flagsGotDebugPubNamesData);
 688
 689             section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubTypes, true).get();
 690             if (!section)
 691                 m_flags.Set (flagsGotDebugPubTypesData);
 692
 693             section = section_list->FindSectionByType (eSectionTypeDWARFDebugRanges, true).get();
 694             if (!section)
 695                 m_flags.Set (flagsGotDebugRangesData);
 696
 697             section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get();
 698             if (!section)
 699                 m_flags.Set (flagsGotDebugStrData);
 700         }
 701         else
 702         {
 703             const char *symfile_dir_cstr = m_obj_file->GetFileSpec().GetDirectory().GetCString();
 704             if (symfile_dir_cstr)
 705             {
 706                 if (strcasestr(symfile_dir_cstr, ".dsym"))
 707                 {
 708                     if (m_obj_file->GetType() == ObjectFile::eTypeDebugInfo)
 709                     {
 710                         // We have a dSYM file that didn't have a any debug info.
 711                         // If the string table has a size of 1, then it was made from
 712                         // an executable with no debug info, or from an executable that
 713                         // was stripped.
 714                         section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get();
 715                         if (section && section->GetFileSize() == 1)
 716                         {
 717                             m_obj_file->GetModule()->ReportWarning ("empty dSYM file detected, dSYM was created with an executable with no debug info.");
 718                         }
 719                     }
 720                 }
 721             }
 722         }
 723
 724         if (debug_abbrev_file_size > 0 && debug_info_file_size > 0)
 725             abilities |= CompileUnits | Functions | Blocks | GlobalVariables | LocalVariables | VariableTypes;
 726
 727         if (debug_line_file_size > 0)
 728             abilities |= LineTables;
 729     }
 730     return abilities;
 731 }
 732
 733 const DWARFDataExtractor&
 734 SymbolFileDWARF::GetCachedSectionData (uint32_t got_flag, SectionType sect_type, DWARFDataExtractor &data)
 735 {
 736     if (m_flags.IsClear (got_flag))
 737     {
 738         ModuleSP module_sp (m_obj_file->GetModule());
 739         m_flags.Set (got_flag);
 740         const SectionList *section_list = module_sp->GetSectionList();
 741         if (section_list)
 742         {
 743             SectionSP section_sp (section_list->FindSectionByType(sect_type, true));
 744             if (section_sp)
 745             {
 746                 // See if we memory mapped the DWARF segment?
 747                 if (m_dwarf_data.GetByteSize())
 748                 {
 749                     data.SetData(m_dwarf_data, section_sp->GetOffset (), section_sp->GetFileSize());
 750                 }
 751                 else
 752                 {
 753                     if (m_obj_file->ReadSectionData (section_sp.get(), data) == 0)
 754                         data.Clear();
 755                 }
 756             }
 757         }
 758     }
 759     return data;
 760 }
 761
 762 const DWARFDataExtractor&
 763 SymbolFileDWARF::get_debug_abbrev_data()
 764 {
 765     return GetCachedSectionData (flagsGotDebugAbbrevData, eSectionTypeDWARFDebugAbbrev, m_data_debug_abbrev);
 766 }
 767
 768 const DWARFDataExtractor&
 769 SymbolFileDWARF::get_debug_aranges_data()
 770 {
 771     return GetCachedSectionData (flagsGotDebugArangesData, eSectionTypeDWARFDebugAranges, m_data_debug_aranges);
 772 }
 773
 774 const DWARFDataExtractor&
 775 SymbolFileDWARF::get_debug_frame_data()
 776 {
 777     return GetCachedSectionData (flagsGotDebugFrameData, eSectionTypeDWARFDebugFrame, m_data_debug_frame);
 778 }
 779
 780 const DWARFDataExtractor&
 781 SymbolFileDWARF::get_debug_info_data()
 782 {
 783     return GetCachedSectionData (flagsGotDebugInfoData, eSectionTypeDWARFDebugInfo, m_data_debug_info);
 784 }
 785
 786 const DWARFDataExtractor&
 787 SymbolFileDWARF::get_debug_line_data()
 788 {
 789     return GetCachedSectionData (flagsGotDebugLineData, eSectionTypeDWARFDebugLine, m_data_debug_line);
 790 }
 791
 792 const DWARFDataExtractor&
 793 SymbolFileDWARF::get_debug_loc_data()
 794 {
 795     return GetCachedSectionData (flagsGotDebugLocData, eSectionTypeDWARFDebugLoc, m_data_debug_loc);
 796 }
 797
 798 const DWARFDataExtractor&
 799 SymbolFileDWARF::get_debug_ranges_data()
 800 {
 801     return GetCachedSectionData (flagsGotDebugRangesData, eSectionTypeDWARFDebugRanges, m_data_debug_ranges);
 802 }
 803
 804 const DWARFDataExtractor&
 805 SymbolFileDWARF::get_debug_str_data()
 806 {
 807     return GetCachedSectionData (flagsGotDebugStrData, eSectionTypeDWARFDebugStr, m_data_debug_str);
 808 }
 809
 810 const DWARFDataExtractor&
 811 SymbolFileDWARF::get_apple_names_data()
 812 {
 813     return GetCachedSectionData (flagsGotAppleNamesData, eSectionTypeDWARFAppleNames, m_data_apple_names);
 814 }
 815
 816 const DWARFDataExtractor&
 817 SymbolFileDWARF::get_apple_types_data()
 818 {
 819     return GetCachedSectionData (flagsGotAppleTypesData, eSectionTypeDWARFAppleTypes, m_data_apple_types);
 820 }
 821
 822 const DWARFDataExtractor&
 823 SymbolFileDWARF::get_apple_namespaces_data()
 824 {
 825     return GetCachedSectionData (flagsGotAppleNamespacesData, eSectionTypeDWARFAppleNamespaces, m_data_apple_namespaces);
 826 }
 827
 828 const DWARFDataExtractor&
 829 SymbolFileDWARF::get_apple_objc_data()
 830 {
 831     return GetCachedSectionData (flagsGotAppleObjCData, eSectionTypeDWARFAppleObjC, m_data_apple_objc);
 832 }
 833
 834
 835 DWARFDebugAbbrev*
 836 SymbolFileDWARF::DebugAbbrev()
 837 {
 838     if (m_abbr.get() == NULL)
 839     {
 840         const DWARFDataExtractor &debug_abbrev_data = get_debug_abbrev_data();
 841         if (debug_abbrev_data.GetByteSize() > 0)
 842         {
 843             m_abbr.reset(new DWARFDebugAbbrev());
 844             if (m_abbr.get())
 845                 m_abbr->Parse(debug_abbrev_data);
 846         }
 847     }
 848     return m_abbr.get();
 849 }
 850
 851 const DWARFDebugAbbrev*
 852 SymbolFileDWARF::DebugAbbrev() const
 853 {
 854     return m_abbr.get();
 855 }
 856
 857
 858 DWARFDebugInfo*
 859 SymbolFileDWARF::DebugInfo()
 860 {
 861     if (m_info.get() == NULL)
 862     {
 863         Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p",
 864                            __PRETTY_FUNCTION__, static_cast<void*>(this));
 865         if (get_debug_info_data().GetByteSize() > 0)
 866         {
 867             m_info.reset(new DWARFDebugInfo());
 868             if (m_info.get())
 869             {
 870                 m_info->SetDwarfData(this);
 871             }
 872         }
 873     }
 874     return m_info.get();
 875 }
 876
 877 const DWARFDebugInfo*
 878 SymbolFileDWARF::DebugInfo() const
 879 {
 880     return m_info.get();
 881 }
 882
 883 DWARFCompileUnit*
 884 SymbolFileDWARF::GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit)
 885 {
 886     DWARFDebugInfo* info = DebugInfo();
 887     if (info)
 888     {
 889         if (GetDebugMapSymfile ())
 890         {
 891             // The debug map symbol file made the compile units for this DWARF
 892             // file which is .o file with DWARF in it, and we should have
 893             // only 1 compile unit which is at offset zero in the DWARF.
 894             // TODO: modify to support LTO .o files where each .o file might
 895             // have multiple DW_TAG_compile_unit tags.
 896             return info->GetCompileUnit(0).get();
 897         }
 898         else
 899         {
 900             // Just a normal DWARF file whose user ID for the compile unit is
 901             // the DWARF offset itself
 902             return info->GetCompileUnit((dw_offset_t)comp_unit->GetID()).get();
 903         }
 904     }
 905     return NULL;
 906 }
 907
 908
 909 DWARFDebugRanges*
 910 SymbolFileDWARF::DebugRanges()
 911 {
 912     if (m_ranges.get() == NULL)
 913     {
 914         Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p",
 915                            __PRETTY_FUNCTION__, static_cast<void*>(this));
 916         if (get_debug_ranges_data().GetByteSize() > 0)
 917         {
 918             m_ranges.reset(new DWARFDebugRanges());
 919             if (m_ranges.get())
 920                 m_ranges->Extract(this);
 921         }
 922     }
 923     return m_ranges.get();
 924 }
 925
 926 const DWARFDebugRanges*
 927 SymbolFileDWARF::DebugRanges() const
 928 {
 929     return m_ranges.get();
 930 }
 931
 932 lldb::CompUnitSP
 933 SymbolFileDWARF::ParseCompileUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx)
 934 {
 935     CompUnitSP cu_sp;
 936     if (dwarf_cu)
 937     {
 938         CompileUnit *comp_unit = (CompileUnit*)dwarf_cu->GetUserData();
 939         if (comp_unit)
 940         {
 941             // We already parsed this compile unit, had out a shared pointer to it
 942             cu_sp = comp_unit->shared_from_this();
 943         }
 944         else
 945         {
 946             if (GetDebugMapSymfile ())
 947             {
 948                 // Let the debug map create the compile unit
 949                 cu_sp = m_debug_map_symfile->GetCompileUnit(this);
 950                 dwarf_cu->SetUserData(cu_sp.get());
 951             }
 952             else
 953             {
 954                 ModuleSP module_sp (m_obj_file->GetModule());
 955                 if (module_sp)
 956                 {
 957                     const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly ();
 958                     if (cu_die)
 959                     {
 960                         const char * cu_die_name = cu_die->GetName(this, dwarf_cu);
 961                         const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL);
 962                         LanguageType cu_language = (LanguageType)cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0);
 963                         if (cu_die_name)
 964                         {
 965                             std::string ramapped_file;
 966                             FileSpec cu_file_spec;
 967
 968                             if (cu_die_name[0] == '/' || cu_comp_dir == NULL || cu_comp_dir[0] == '\0')
 969                             {
 970                                 // If we have a full path to the compile unit, we don't need to resolve
 971                                 // the file.  This can be expensive e.g. when the source files are NFS mounted.
 972                                 if (module_sp->RemapSourceFile(cu_die_name, ramapped_file))
 973                                     cu_file_spec.SetFile (ramapped_file.c_str(), false);
 974                                 else
 975                                     cu_file_spec.SetFile (cu_die_name, false);
 976                             }
 977                             else
 978                             {
 979                                 // DWARF2/3 suggests the form hostname:pathname for compilation directory.
 980                                 // Remove the host part if present.
 981                                 cu_comp_dir = removeHostnameFromPathname(cu_comp_dir);
 982                                 std::string fullpath(cu_comp_dir);
 983
 984                                 if (*fullpath.rbegin() != '/')
 985                                     fullpath += '/';
 986                                 fullpath += cu_die_name;
 987                                 if (module_sp->RemapSourceFile (fullpath.c_str(), ramapped_file))
 988                                     cu_file_spec.SetFile (ramapped_file.c_str(), false);
 989                                 else
 990                                     cu_file_spec.SetFile (fullpath.c_str(), false);
 991                             }
 992
 993                             cu_sp.reset(new CompileUnit (module_sp,
 994                                                          dwarf_cu,
 995                                                          cu_file_spec,
 996                                                          MakeUserID(dwarf_cu->GetOffset()),
 997                                                          cu_language));
 998                             if (cu_sp)
 999                             {
1000                                 dwarf_cu->SetUserData(cu_sp.get());
1001
1002                                 // Figure out the compile unit index if we weren't given one
1003                                 if (cu_idx == UINT32_MAX)
1004                                     DebugInfo()->GetCompileUnit(dwarf_cu->GetOffset(), &cu_idx);
1005
1006                                 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp);
1007                             }
1008                         }
1009                     }
1010                 }
1011             }
1012         }
1013     }
1014     return cu_sp;
1015 }
1016
1017 uint32_t
1018 SymbolFileDWARF::GetNumCompileUnits()
1019 {
1020     DWARFDebugInfo* info = DebugInfo();
1021     if (info)
1022         return info->GetNumCompileUnits();
1023     return 0;
1024 }
1025
1026 CompUnitSP
1027 SymbolFileDWARF::ParseCompileUnitAtIndex(uint32_t cu_idx)
1028 {
1029     CompUnitSP cu_sp;
1030     DWARFDebugInfo* info = DebugInfo();
1031     if (info)
1032     {
1033         DWARFCompileUnit* dwarf_cu = info->GetCompileUnitAtIndex(cu_idx);
1034         if (dwarf_cu)
1035             cu_sp = ParseCompileUnit(dwarf_cu, cu_idx);
1036     }
1037     return cu_sp;
1038 }
1039
1040 static void
1041 AddRangesToBlock (Block& block,
1042                   DWARFDebugRanges::RangeList& ranges,
1043                   addr_t block_base_addr)
1044 {
1045     const size_t num_ranges = ranges.GetSize();
1046     for (size_t i = 0; i<num_ranges; ++i)
1047     {
1048         const DWARFDebugRanges::Range &range = ranges.GetEntryRef (i);
1049         const addr_t range_base = range.GetRangeBase();
1050         assert (range_base >= block_base_addr);
1051         block.AddRange(Block::Range (range_base - block_base_addr, range.GetByteSize()));;
1052     }
1053     block.FinalizeRanges ();
1054 }
1055
1056
1057 Function *
1058 SymbolFileDWARF::ParseCompileUnitFunction (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die)
1059 {
1060     DWARFDebugRanges::RangeList func_ranges;
1061     const char *name = NULL;
1062     const char *mangled = NULL;
1063     int decl_file = 0;
1064     int decl_line = 0;
1065     int decl_column = 0;
1066     int call_file = 0;
1067     int call_line = 0;
1068     int call_column = 0;
1069     DWARFExpression frame_base;
1070
1071     assert (die->Tag() == DW_TAG_subprogram);
1072
1073     if (die->Tag() != DW_TAG_subprogram)
1074         return NULL;
1075
1076     if (die->GetDIENamesAndRanges (this,
1077                                    dwarf_cu,
1078                                    name,
1079                                    mangled,
1080                                    func_ranges,
1081                                    decl_file,
1082                                    decl_line,
1083                                    decl_column,
1084                                    call_file,
1085                                    call_line,
1086                                    call_column,
1087                                    &frame_base))
1088     {
1089         // Union of all ranges in the function DIE (if the function is discontiguous)
1090         AddressRange func_range;
1091         lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase (0);
1092         lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd (0);
1093         if (lowest_func_addr != LLDB_INVALID_ADDRESS && lowest_func_addr <= highest_func_addr)
1094         {
1095             ModuleSP module_sp (m_obj_file->GetModule());
1096             func_range.GetBaseAddress().ResolveAddressUsingFileSections (lowest_func_addr, module_sp->GetSectionList());
1097             if (func_range.GetBaseAddress().IsValid())
1098                 func_range.SetByteSize(highest_func_addr - lowest_func_addr);
1099         }
1100
1101         if (func_range.GetBaseAddress().IsValid())
1102         {
1103             Mangled func_name;
1104             if (mangled)
1105                 func_name.SetValue(ConstString(mangled), true);
1106             else if (name)
1107                 func_name.SetValue(ConstString(name), false);
1108
1109             FunctionSP func_sp;
1110             std::unique_ptr<Declaration> decl_ap;
1111             if (decl_file != 0 || decl_line != 0 || decl_column != 0)
1112                 decl_ap.reset(new Declaration (sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file),
1113                                                decl_line,
1114                                                decl_column));
1115
1116             // Supply the type _only_ if it has already been parsed
1117             Type *func_type = m_die_to_type.lookup (die);
1118
1119             assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED);
1120
1121             if (FixupAddress (func_range.GetBaseAddress()))
1122             {
1123                 const user_id_t func_user_id = MakeUserID(die->GetOffset());
1124                 func_sp.reset(new Function (sc.comp_unit,
1125                                             MakeUserID(func_user_id),       // UserID is the DIE offset
1126                                             MakeUserID(func_user_id),
1127                                             func_name,
1128                                             func_type,
1129                                             func_range));           // first address range
1130
1131                 if (func_sp.get() != NULL)
1132                 {
1133                     if (frame_base.IsValid())
1134                         func_sp->GetFrameBaseExpression() = frame_base;
1135                     sc.comp_unit->AddFunction(func_sp);
1136                     return func_sp.get();
1137                 }
1138             }
1139         }
1140     }
1141     return NULL;
1142 }
1143
1144 bool
1145 SymbolFileDWARF::FixupAddress (Address &addr)
1146 {
1147     SymbolFileDWARFDebugMap * debug_map_symfile = GetDebugMapSymfile ();
1148     if (debug_map_symfile)
1149     {
1150         return debug_map_symfile->LinkOSOAddress(addr);
1151     }
1152     // This is a normal DWARF file, no address fixups need to happen
1153     return true;
1154 }
1155 lldb::LanguageType
1156 SymbolFileDWARF::ParseCompileUnitLanguage (const SymbolContext& sc)
1157 {
1158     assert (sc.comp_unit);
1159     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1160     if (dwarf_cu)
1161     {
1162         const DWARFDebugInfoEntry *die = dwarf_cu->GetCompileUnitDIEOnly();
1163         if (die)
1164         {
1165             const uint32_t language = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0);
1166             if (language)
1167                 return (lldb::LanguageType)language;
1168         }
1169     }
1170     return eLanguageTypeUnknown;
1171 }
1172
1173 size_t
1174 SymbolFileDWARF::ParseCompileUnitFunctions(const SymbolContext &sc)
1175 {
1176     assert (sc.comp_unit);
1177     size_t functions_added = 0;
1178     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1179     if (dwarf_cu)
1180     {
1181         DWARFDIECollection function_dies;
1182         const size_t num_functions = dwarf_cu->AppendDIEsWithTag (DW_TAG_subprogram, function_dies);
1183         size_t func_idx;
1184         for (func_idx = 0; func_idx < num_functions; ++func_idx)
1185         {
1186             const DWARFDebugInfoEntry *die = function_dies.GetDIEPtrAtIndex(func_idx);
1187             if (sc.comp_unit->FindFunctionByUID (MakeUserID(die->GetOffset())).get() == NULL)
1188             {
1189                 if (ParseCompileUnitFunction(sc, dwarf_cu, die))
1190                     ++functions_added;
1191             }
1192         }
1193         //FixupTypes();
1194     }
1195     return functions_added;
1196 }
1197
1198 bool
1199 SymbolFileDWARF::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList& support_files)
1200 {
1201     assert (sc.comp_unit);
1202     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1203     if (dwarf_cu)
1204     {
1205         const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly();
1206
1207         if (cu_die)
1208         {
1209             const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL);
1210
1211             // DWARF2/3 suggests the form hostname:pathname for compilation directory.
1212             // Remove the host part if present.
1213             cu_comp_dir = removeHostnameFromPathname(cu_comp_dir);
1214
1215             dw_offset_t stmt_list = cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET);
1216
1217             // All file indexes in DWARF are one based and a file of index zero is
1218             // supposed to be the compile unit itself.
1219             support_files.Append (*sc.comp_unit);
1220
1221             return DWARFDebugLine::ParseSupportFiles(sc.comp_unit->GetModule(), get_debug_line_data(), cu_comp_dir, stmt_list, support_files);
1222         }
1223     }
1224     return false;
1225 }
1226
1227 struct ParseDWARFLineTableCallbackInfo
1228 {
1229     LineTable* line_table;
1230     std::unique_ptr<LineSequence> sequence_ap;
1231 };
1232
1233 //----------------------------------------------------------------------
1234 // ParseStatementTableCallback
1235 //----------------------------------------------------------------------
1236 static void
1237 ParseDWARFLineTableCallback(dw_offset_t offset, const DWARFDebugLine::State& state, void* userData)
1238 {
1239     if (state.row == DWARFDebugLine::State::StartParsingLineTable)
1240     {
1241         // Just started parsing the line table
1242     }
1243     else if (state.row == DWARFDebugLine::State::DoneParsingLineTable)
1244     {
1245         // Done parsing line table, nothing to do for the cleanup
1246     }
1247     else
1248     {
1249         ParseDWARFLineTableCallbackInfo* info = (ParseDWARFLineTableCallbackInfo*)userData;
1250         LineTable* line_table = info->line_table;
1251
1252         // If this is our first time here, we need to create a
1253         // sequence container.
1254         if (!info->sequence_ap.get())
1255         {
1256             info->sequence_ap.reset(line_table->CreateLineSequenceContainer());
1257             assert(info->sequence_ap.get());
1258         }
1259         line_table->AppendLineEntryToSequence (info->sequence_ap.get(),
1260                                                state.address,
1261                                                state.line,
1262                                                state.column,
1263                                                state.file,
1264                                                state.is_stmt,
1265                                                state.basic_block,
1266                                                state.prologue_end,
1267                                                state.epilogue_begin,
1268                                                state.end_sequence);
1269         if (state.end_sequence)
1270         {
1271             // First, put the current sequence into the line table.
1272             line_table->InsertSequence(info->sequence_ap.get());
1273             // Then, empty it to prepare for the next sequence.
1274             info->sequence_ap->Clear();
1275         }
1276     }
1277 }
1278
1279 bool
1280 SymbolFileDWARF::ParseCompileUnitLineTable (const SymbolContext &sc)
1281 {
1282     assert (sc.comp_unit);
1283     if (sc.comp_unit->GetLineTable() != NULL)
1284         return true;
1285
1286     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1287     if (dwarf_cu)
1288     {
1289         const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->GetCompileUnitDIEOnly();
1290         if (dwarf_cu_die)
1291         {
1292             const dw_offset_t cu_line_offset = dwarf_cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET);
1293             if (cu_line_offset != DW_INVALID_OFFSET)
1294             {
1295                 std::unique_ptr<LineTable> line_table_ap(new LineTable(sc.comp_unit));
1296                 if (line_table_ap.get())
1297                 {
1298                     ParseDWARFLineTableCallbackInfo info;
1299                     info.line_table = line_table_ap.get();
1300                     lldb::offset_t offset = cu_line_offset;
1301                     DWARFDebugLine::ParseStatementTable(get_debug_line_data(), &offset, ParseDWARFLineTableCallback, &info);
1302                     if (m_debug_map_symfile)
1303                     {
1304                         // We have an object file that has a line table with addresses
1305                         // that are not linked. We need to link the line table and convert
1306                         // the addresses that are relative to the .o file into addresses
1307                         // for the main executable.
1308                         sc.comp_unit->SetLineTable (m_debug_map_symfile->LinkOSOLineTable (this, line_table_ap.get()));
1309                     }
1310                     else
1311                     {
1312                         sc.comp_unit->SetLineTable(line_table_ap.release());
1313                         return true;
1314                     }
1315                 }
1316             }
1317         }
1318     }
1319     return false;
1320 }
1321
1322 size_t
1323 SymbolFileDWARF::ParseFunctionBlocks
1324 (
1325     const SymbolContext& sc,
1326     Block *parent_block,
1327     DWARFCompileUnit* dwarf_cu,
1328     const DWARFDebugInfoEntry *die,
1329     addr_t subprogram_low_pc,
1330     uint32_t depth
1331 )
1332 {
1333     size_t blocks_added = 0;
1334     while (die != NULL)
1335     {
1336         dw_tag_t tag = die->Tag();
1337
1338         switch (tag)
1339         {
1340         case DW_TAG_inlined_subroutine:
1341         case DW_TAG_subprogram:
1342         case DW_TAG_lexical_block:
1343             {
1344                 Block *block = NULL;
1345                 if (tag == DW_TAG_subprogram)
1346                 {
1347                     // Skip any DW_TAG_subprogram DIEs that are inside
1348                     // of a normal or inlined functions. These will be
1349                     // parsed on their own as separate entities.
1350
1351                     if (depth > 0)
1352                         break;
1353
1354                     block = parent_block;
1355                 }
1356                 else
1357                 {
1358                     BlockSP block_sp(new Block (MakeUserID(die->GetOffset())));
1359                     parent_block->AddChild(block_sp);
1360                     block = block_sp.get();
1361                 }
1362                 DWARFDebugRanges::RangeList ranges;
1363                 const char *name = NULL;
1364                 const char *mangled_name = NULL;
1365
1366                 int decl_file = 0;
1367                 int decl_line = 0;
1368                 int decl_column = 0;
1369                 int call_file = 0;
1370                 int call_line = 0;
1371                 int call_column = 0;
1372                 if (die->GetDIENamesAndRanges (this,
1373                                                dwarf_cu,
1374                                                name,
1375                                                mangled_name,
1376                                                ranges,
1377                                                decl_file, decl_line, decl_column,
1378                                                call_file, call_line, call_column))
1379                 {
1380                     if (tag == DW_TAG_subprogram)
1381                     {
1382                         assert (subprogram_low_pc == LLDB_INVALID_ADDRESS);
1383                         subprogram_low_pc = ranges.GetMinRangeBase(0);
1384                     }
1385                     else if (tag == DW_TAG_inlined_subroutine)
1386                     {
1387                         // We get called here for inlined subroutines in two ways.
1388                         // The first time is when we are making the Function object
1389                         // for this inlined concrete instance.  Since we're creating a top level block at
1390                         // here, the subprogram_low_pc will be LLDB_INVALID_ADDRESS.  So we need to
1391                         // adjust the containing address.
1392                         // The second time is when we are parsing the blocks inside the function that contains
1393                         // the inlined concrete instance.  Since these will be blocks inside the containing "real"
1394                         // function the offset will be for that function.
1395                         if (subprogram_low_pc == LLDB_INVALID_ADDRESS)
1396                         {
1397                             subprogram_low_pc = ranges.GetMinRangeBase(0);
1398                         }
1399                     }
1400
1401                     AddRangesToBlock (*block, ranges, subprogram_low_pc);
1402
1403                     if (tag != DW_TAG_subprogram && (name != NULL || mangled_name != NULL))
1404                     {
1405                         std::unique_ptr<Declaration> decl_ap;
1406                         if (decl_file != 0 || decl_line != 0 || decl_column != 0)
1407                             decl_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file),
1408                                                           decl_line, decl_column));
1409
1410                         std::unique_ptr<Declaration> call_ap;
1411                         if (call_file != 0 || call_line != 0 || call_column != 0)
1412                             call_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(call_file),
1413                                                           call_line, call_column));
1414
1415                         block->SetInlinedFunctionInfo (name, mangled_name, decl_ap.get(), call_ap.get());
1416                     }
1417
1418                     ++blocks_added;
1419
1420                     if (die->HasChildren())
1421                     {
1422                         blocks_added += ParseFunctionBlocks (sc,
1423                                                              block,
1424                                                              dwarf_cu,
1425                                                              die->GetFirstChild(),
1426                                                              subprogram_low_pc,
1427                                                              depth + 1);
1428                     }
1429                 }
1430             }
1431             break;
1432         default:
1433             break;
1434         }
1435
1436         // Only parse siblings of the block if we are not at depth zero. A depth
1437         // of zero indicates we are currently parsing the top level
1438         // DW_TAG_subprogram DIE
1439
1440         if (depth == 0)
1441             die = NULL;
1442         else
1443             die = die->GetSibling();
1444     }
1445     return blocks_added;
1446 }
1447
1448 bool
1449 SymbolFileDWARF::ParseTemplateDIE (DWARFCompileUnit* dwarf_cu,
1450                                    const DWARFDebugInfoEntry *die,
1451                                    ClangASTContext::TemplateParameterInfos &template_param_infos)
1452 {
1453     const dw_tag_t tag = die->Tag();
1454
1455     switch (tag)
1456     {
1457     case DW_TAG_template_type_parameter:
1458     case DW_TAG_template_value_parameter:
1459         {
1460             const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
1461
1462             DWARFDebugInfoEntry::Attributes attributes;
1463             const size_t num_attributes = die->GetAttributes (this,
1464                                                               dwarf_cu,
1465                                                               fixed_form_sizes,
1466                                                               attributes);
1467             const char *name = NULL;
1468             Type *lldb_type = NULL;
1469             ClangASTType clang_type;
1470             uint64_t uval64 = 0;
1471             bool uval64_valid = false;
1472             if (num_attributes > 0)
1473             {
1474                 DWARFFormValue form_value;
1475                 for (size_t i=0; i<num_attributes; ++i)
1476                 {
1477                     const dw_attr_t attr = attributes.AttributeAtIndex(i);
1478
1479                     switch (attr)
1480                     {
1481                         case DW_AT_name:
1482                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1483                                 name = form_value.AsCString(&get_debug_str_data());
1484                             break;
1485
1486                         case DW_AT_type:
1487                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1488                             {
1489                                 const dw_offset_t type_die_offset = form_value.Reference(dwarf_cu);
1490                                 lldb_type = ResolveTypeUID(type_die_offset);
1491                                 if (lldb_type)
1492                                     clang_type = lldb_type->GetClangForwardType();
1493                             }
1494                             break;
1495
1496                         case DW_AT_const_value:
1497                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1498                             {
1499                                 uval64_valid = true;
1500                                 uval64 = form_value.Unsigned();
1501                             }
1502                             break;
1503                         default:
1504                             break;
1505                     }
1506                 }
1507
1508                 clang::ASTContext *ast = GetClangASTContext().getASTContext();
1509                 if (!clang_type)
1510                     clang_type = GetClangASTContext().GetBasicType(eBasicTypeVoid);
1511
1512                 if (clang_type)
1513                 {
1514                     bool is_signed = false;
1515                     if (name && name[0])
1516                         template_param_infos.names.push_back(name);
1517                     else
1518                         template_param_infos.names.push_back(NULL);
1519
1520                     if (tag == DW_TAG_template_value_parameter &&
1521                         lldb_type != NULL &&
1522                         clang_type.IsIntegerType (is_signed) &&
1523                         uval64_valid)
1524                     {
1525                         llvm::APInt apint (lldb_type->GetByteSize() * 8, uval64, is_signed);
1526                         template_param_infos.args.push_back (clang::TemplateArgument (*ast,
1527                                                                                       llvm::APSInt(apint),
1528                                                                                       clang_type.GetQualType()));
1529                     }
1530                     else
1531                     {
1532                         template_param_infos.args.push_back (clang::TemplateArgument (clang_type.GetQualType()));
1533                     }
1534                 }
1535                 else
1536                 {
1537                     return false;
1538                 }
1539
1540             }
1541         }
1542         return true;
1543
1544     default:
1545         break;
1546     }
1547     return false;
1548 }
1549
1550 bool
1551 SymbolFileDWARF::ParseTemplateParameterInfos (DWARFCompileUnit* dwarf_cu,
1552                                               const DWARFDebugInfoEntry *parent_die,
1553                                               ClangASTContext::TemplateParameterInfos &template_param_infos)
1554 {
1555
1556     if (parent_die == NULL)
1557         return false;
1558
1559     Args template_parameter_names;
1560     for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild();
1561          die != NULL;
1562          die = die->GetSibling())
1563     {
1564         const dw_tag_t tag = die->Tag();
1565
1566         switch (tag)
1567         {
1568             case DW_TAG_template_type_parameter:
1569             case DW_TAG_template_value_parameter:
1570                 ParseTemplateDIE (dwarf_cu, die, template_param_infos);
1571             break;
1572
1573         default:
1574             break;
1575         }
1576     }
1577     if (template_param_infos.args.empty())
1578         return false;
1579     return template_param_infos.args.size() == template_param_infos.names.size();
1580 }
1581
1582 clang::ClassTemplateDecl *
1583 SymbolFileDWARF::ParseClassTemplateDecl (clang::DeclContext *decl_ctx,
1584                                          lldb::AccessType access_type,
1585                                          const char *parent_name,
1586                                          int tag_decl_kind,
1587                                          const ClangASTContext::TemplateParameterInfos &template_param_infos)
1588 {
1589     if (template_param_infos.IsValid())
1590     {
1591         std::string template_basename(parent_name);
1592         template_basename.erase (template_basename.find('<'));
1593         ClangASTContext &ast = GetClangASTContext();
1594
1595         return ast.CreateClassTemplateDecl (decl_ctx,
1596                                             access_type,
1597                                             template_basename.c_str(),
1598                                             tag_decl_kind,
1599                                             template_param_infos);
1600     }
1601     return NULL;
1602 }
1603
1604 class SymbolFileDWARF::DelayedAddObjCClassProperty
1605 {
1606 public:
1607     DelayedAddObjCClassProperty
1608     (
1609         const ClangASTType     &class_opaque_type,
1610         const char             *property_name,
1611         const ClangASTType     &property_opaque_type,  // The property type is only required if you don't have an ivar decl
1612         clang::ObjCIvarDecl    *ivar_decl,
1613         const char             *property_setter_name,
1614         const char             *property_getter_name,
1615         uint32_t                property_attributes,
1616         const ClangASTMetadata *metadata
1617     ) :
1618         m_class_opaque_type     (class_opaque_type),
1619         m_property_name         (property_name),
1620         m_property_opaque_type  (property_opaque_type),
1621         m_ivar_decl             (ivar_decl),
1622         m_property_setter_name  (property_setter_name),
1623         m_property_getter_name  (property_getter_name),
1624         m_property_attributes   (property_attributes)
1625     {
1626         if (metadata != NULL)
1627         {
1628             m_metadata_ap.reset(new ClangASTMetadata());
1629             *m_metadata_ap = *metadata;
1630         }
1631     }
1632
1633     DelayedAddObjCClassProperty (const DelayedAddObjCClassProperty &rhs)
1634     {
1635         *this = rhs;
1636     }
1637
1638     DelayedAddObjCClassProperty& operator= (const DelayedAddObjCClassProperty &rhs)
1639     {
1640         m_class_opaque_type    = rhs.m_class_opaque_type;
1641         m_property_name        = rhs.m_property_name;
1642         m_property_opaque_type = rhs.m_property_opaque_type;
1643         m_ivar_decl            = rhs.m_ivar_decl;
1644         m_property_setter_name = rhs.m_property_setter_name;
1645         m_property_getter_name = rhs.m_property_getter_name;
1646         m_property_attributes  = rhs.m_property_attributes;
1647
1648         if (rhs.m_metadata_ap.get())
1649         {
1650             m_metadata_ap.reset (new ClangASTMetadata());
1651             *m_metadata_ap = *rhs.m_metadata_ap;
1652         }
1653         return *this;
1654     }
1655
1656     bool
1657     Finalize()
1658     {
1659         return m_class_opaque_type.AddObjCClassProperty (m_property_name,
1660                                                          m_property_opaque_type,
1661                                                          m_ivar_decl,
1662                                                          m_property_setter_name,
1663                                                          m_property_getter_name,
1664                                                          m_property_attributes,
1665                                                          m_metadata_ap.get());
1666     }
1667 private:
1668     ClangASTType            m_class_opaque_type;
1669     const char             *m_property_name;
1670     ClangASTType            m_property_opaque_type;
1671     clang::ObjCIvarDecl    *m_ivar_decl;
1672     const char             *m_property_setter_name;
1673     const char             *m_property_getter_name;
1674     uint32_t                m_property_attributes;
1675     std::unique_ptr<ClangASTMetadata> m_metadata_ap;
1676 };
1677
1678 struct BitfieldInfo
1679 {
1680     uint64_t bit_size;
1681     uint64_t bit_offset;
1682
1683     BitfieldInfo () :
1684         bit_size (LLDB_INVALID_ADDRESS),
1685         bit_offset (LLDB_INVALID_ADDRESS)
1686     {
1687     }
1688
1689     void
1690     Clear()
1691     {
1692         bit_size = LLDB_INVALID_ADDRESS;
1693         bit_offset = LLDB_INVALID_ADDRESS;
1694     }
1695
1696     bool IsValid ()
1697     {
1698         return (bit_size != LLDB_INVALID_ADDRESS) &&
1699                (bit_offset != LLDB_INVALID_ADDRESS);
1700     }
1701 };
1702
1703
1704 bool
1705 SymbolFileDWARF::ClassOrStructIsVirtual (DWARFCompileUnit* dwarf_cu,
1706                                          const DWARFDebugInfoEntry *parent_die)
1707 {
1708     if (parent_die)
1709     {
1710         for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
1711         {
1712             dw_tag_t tag = die->Tag();
1713             bool check_virtuality = false;
1714             switch (tag)
1715             {
1716                 case DW_TAG_inheritance:
1717                 case DW_TAG_subprogram:
1718                     check_virtuality = true;
1719                     break;
1720                 default:
1721                     break;
1722             }
1723             if (check_virtuality)
1724             {
1725                 if (die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_virtuality, 0) != 0)
1726                     return true;
1727             }
1728         }
1729     }
1730     return false;
1731 }
1732
1733 size_t
1734 SymbolFileDWARF::ParseChildMembers
1735 (
1736     const SymbolContext& sc,
1737     DWARFCompileUnit* dwarf_cu,
1738     const DWARFDebugInfoEntry *parent_die,
1739     ClangASTType &class_clang_type,
1740     const LanguageType class_language,
1741     std::vector<clang::CXXBaseSpecifier *>& base_classes,
1742     std::vector<int>& member_accessibilities,
1743     DWARFDIECollection& member_function_dies,
1744     DelayedPropertyList& delayed_properties,
1745     AccessType& default_accessibility,
1746     bool &is_a_class,
1747     LayoutInfo &layout_info
1748 )
1749 {
1750     if (parent_die == NULL)
1751         return 0;
1752
1753     size_t count = 0;
1754     const DWARFDebugInfoEntry *die;
1755     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
1756     uint32_t member_idx = 0;
1757     BitfieldInfo last_field_info;
1758     ModuleSP module = GetObjectFile()->GetModule();
1759
1760     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
1761     {
1762         dw_tag_t tag = die->Tag();
1763
1764         switch (tag)
1765         {
1766         case DW_TAG_member:
1767         case DW_TAG_APPLE_property:
1768             {
1769                 DWARFDebugInfoEntry::Attributes attributes;
1770                 const size_t num_attributes = die->GetAttributes (this,
1771                                                                   dwarf_cu,
1772                                                                   fixed_form_sizes,
1773                                                                   attributes);
1774                 if (num_attributes > 0)
1775                 {
1776                     Declaration decl;
1777                     //DWARFExpression location;
1778                     const char *name = NULL;
1779                     const char *prop_name = NULL;
1780                     const char *prop_getter_name = NULL;
1781                     const char *prop_setter_name = NULL;
1782                     uint32_t prop_attributes = 0;
1783
1784
1785                     bool is_artificial = false;
1786                     lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
1787                     AccessType accessibility = eAccessNone;
1788                     uint32_t member_byte_offset = UINT32_MAX;
1789                     size_t byte_size = 0;
1790                     size_t bit_offset = 0;
1791                     size_t bit_size = 0;
1792                     bool is_external = false; // On DW_TAG_members, this means the member is static
1793                     uint32_t i;
1794                     for (i=0; i<num_attributes && !is_artificial; ++i)
1795                     {
1796                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
1797                         DWARFFormValue form_value;
1798                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1799                         {
1800                             switch (attr)
1801                             {
1802                             case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
1803                             case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
1804                             case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
1805                             case DW_AT_name:        name = form_value.AsCString(&get_debug_str_data()); break;
1806                             case DW_AT_type:        encoding_uid = form_value.Reference(dwarf_cu); break;
1807                             case DW_AT_bit_offset:  bit_offset = form_value.Unsigned(); break;
1808                             case DW_AT_bit_size:    bit_size = form_value.Unsigned(); break;
1809                             case DW_AT_byte_size:   byte_size = form_value.Unsigned(); break;
1810                             case DW_AT_data_member_location:
1811                                 if (form_value.BlockData())
1812                                 {
1813                                     Value initialValue(0);
1814                                     Value memberOffset(0);
1815                                     const DWARFDataExtractor& debug_info_data = get_debug_info_data();
1816                                     uint32_t block_length = form_value.Unsigned();
1817                                     uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
1818                                     if (DWARFExpression::Evaluate(NULL, // ExecutionContext *
1819                                                                   NULL, // ClangExpressionVariableList *
1820                                                                   NULL, // ClangExpressionDeclMap *
1821                                                                   NULL, // RegisterContext *
1822                                                                   module,
1823                                                                   debug_info_data,
1824                                                                   block_offset,
1825                                                                   block_length,
1826                                                                   eRegisterKindDWARF,
1827                                                                   &initialValue,
1828                                                                   memberOffset,
1829                                                                   NULL))
1830                                     {
1831                                         member_byte_offset = memberOffset.ResolveValue(NULL).UInt();
1832                                     }
1833                                 }
1834                                 else
1835                                 {
1836                                     // With DWARF 3 and later, if the value is an integer constant,
1837                                     // this form value is the offset in bytes from the beginning
1838                                     // of the containing entity.
1839                                     member_byte_offset = form_value.Unsigned();
1840                                 }
1841                                 break;
1842
1843                             case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType (form_value.Unsigned()); break;
1844                             case DW_AT_artificial: is_artificial = form_value.Boolean(); break;
1845                             case DW_AT_APPLE_property_name:      prop_name = form_value.AsCString(&get_debug_str_data()); break;
1846                             case DW_AT_APPLE_property_getter:    prop_getter_name = form_value.AsCString(&get_debug_str_data()); break;
1847                             case DW_AT_APPLE_property_setter:    prop_setter_name = form_value.AsCString(&get_debug_str_data()); break;
1848                             case DW_AT_APPLE_property_attribute: prop_attributes = form_value.Unsigned(); break;
1849                             case DW_AT_external:                 is_external = form_value.Boolean(); break;
1850
1851                             default:
1852                             case DW_AT_declaration:
1853                             case DW_AT_description:
1854                             case DW_AT_mutable:
1855                             case DW_AT_visibility:
1856                             case DW_AT_sibling:
1857                                 break;
1858                             }
1859                         }
1860                     }
1861
1862                     if (prop_name)
1863                     {
1864                         ConstString fixed_getter;
1865                         ConstString fixed_setter;
1866
1867                         // Check if the property getter/setter were provided as full
1868                         // names.  We want basenames, so we extract them.
1869
1870                         if (prop_getter_name && prop_getter_name[0] == '-')
1871                         {
1872                             ObjCLanguageRuntime::MethodName prop_getter_method(prop_getter_name, true);
1873                             prop_getter_name = prop_getter_method.GetSelector().GetCString();
1874                         }
1875
1876                         if (prop_setter_name && prop_setter_name[0] == '-')
1877                         {
1878                             ObjCLanguageRuntime::MethodName prop_setter_method(prop_setter_name, true);
1879                             prop_setter_name = prop_setter_method.GetSelector().GetCString();
1880                         }
1881
1882                         // If the names haven't been provided, they need to be
1883                         // filled in.
1884
1885                         if (!prop_getter_name)
1886                         {
1887                             prop_getter_name = prop_name;
1888                         }
1889                         if (!prop_setter_name && prop_name[0] && !(prop_attributes & DW_APPLE_PROPERTY_readonly))
1890                         {
1891                             StreamString ss;
1892
1893                             ss.Printf("set%c%s:",
1894                                       toupper(prop_name[0]),
1895                                       &prop_name[1]);
1896
1897                             fixed_setter.SetCString(ss.GetData());
1898                             prop_setter_name = fixed_setter.GetCString();
1899                         }
1900                     }
1901
1902                     // Clang has a DWARF generation bug where sometimes it
1903                     // represents fields that are references with bad byte size
1904                     // and bit size/offset information such as:
1905                     //
1906                     //  DW_AT_byte_size( 0x00 )
1907                     //  DW_AT_bit_size( 0x40 )
1908                     //  DW_AT_bit_offset( 0xffffffffffffffc0 )
1909                     //
1910                     // So check the bit offset to make sure it is sane, and if
1911                     // the values are not sane, remove them. If we don't do this
1912                     // then we will end up with a crash if we try to use this
1913                     // type in an expression when clang becomes unhappy with its
1914                     // recycled debug info.
1915
1916                     if (bit_offset > 128)
1917                     {
1918                         bit_size = 0;
1919                         bit_offset = 0;
1920                     }
1921
1922                     // FIXME: Make Clang ignore Objective-C accessibility for expressions
1923                     if (class_language == eLanguageTypeObjC ||
1924                         class_language == eLanguageTypeObjC_plus_plus)
1925                         accessibility = eAccessNone;
1926
1927                     if (member_idx == 0 && !is_artificial && name && (strstr (name, "_vptr$") == name))
1928                     {
1929                         // Not all compilers will mark the vtable pointer
1930                         // member as artificial (llvm-gcc). We can't have
1931                         // the virtual members in our classes otherwise it
1932                         // throws off all child offsets since we end up
1933                         // having and extra pointer sized member in our
1934                         // class layouts.
1935                         is_artificial = true;
1936                     }
1937
1938                     // Handle static members
1939                     if (is_external && member_byte_offset == UINT32_MAX)
1940                     {
1941                         Type *var_type = ResolveTypeUID(encoding_uid);
1942
1943                         if (var_type)
1944                         {
1945                             if (accessibility == eAccessNone)
1946                                 accessibility = eAccessPublic;
1947                             class_clang_type.AddVariableToRecordType (name,
1948                                                                       var_type->GetClangLayoutType(),
1949                                                                       accessibility);
1950                         }
1951                         break;
1952                     }
1953
1954                     if (is_artificial == false)
1955                     {
1956                         Type *member_type = ResolveTypeUID(encoding_uid);
1957
1958                         clang::FieldDecl *field_decl = NULL;
1959                         if (tag == DW_TAG_member)
1960                         {
1961                             if (member_type)
1962                             {
1963                                 if (accessibility == eAccessNone)
1964                                     accessibility = default_accessibility;
1965                                 member_accessibilities.push_back(accessibility);
1966
1967                                 uint64_t field_bit_offset = (member_byte_offset == UINT32_MAX ? 0 : (member_byte_offset * 8));
1968                                 if (bit_size > 0)
1969                                 {
1970
1971                                     BitfieldInfo this_field_info;
1972                                     this_field_info.bit_offset = field_bit_offset;
1973                                     this_field_info.bit_size = bit_size;
1974
1975                                     /////////////////////////////////////////////////////////////
1976                                     // How to locate a field given the DWARF debug information
1977                                     //
1978                                     // AT_byte_size indicates the size of the word in which the
1979                                     // bit offset must be interpreted.
1980                                     //
1981                                     // AT_data_member_location indicates the byte offset of the
1982                                     // word from the base address of the structure.
1983                                     //
1984                                     // AT_bit_offset indicates how many bits into the word
1985                                     // (according to the host endianness) the low-order bit of
1986                                     // the field starts.  AT_bit_offset can be negative.
1987                                     //
1988                                     // AT_bit_size indicates the size of the field in bits.
1989                                     /////////////////////////////////////////////////////////////
1990
1991                                     if (byte_size == 0)
1992                                         byte_size = member_type->GetByteSize();
1993
1994                                     if (GetObjectFile()->GetByteOrder() == eByteOrderLittle)
1995                                     {
1996                                         this_field_info.bit_offset += byte_size * 8;
1997                                         this_field_info.bit_offset -= (bit_offset + bit_size);
1998                                     }
1999                                     else
2000                                     {
2001                                         this_field_info.bit_offset += bit_offset;
2002                                     }
2003
2004                                     // Update the field bit offset we will report for layout
2005                                     field_bit_offset = this_field_info.bit_offset;
2006
2007                                     // If the member to be emitted did not start on a character boundary and there is
2008                                     // empty space between the last field and this one, then we need to emit an
2009                                     // anonymous member filling up the space up to its start.  There are three cases
2010                                     // here:
2011                                     //
2012                                     // 1 If the previous member ended on a character boundary, then we can emit an
2013                                     //   anonymous member starting at the most recent character boundary.
2014                                     //
2015                                     // 2 If the previous member did not end on a character boundary and the distance
2016                                     //   from the end of the previous member to the current member is less than a
2017                                     //   word width, then we can emit an anonymous member starting right after the
2018                                     //   previous member and right before this member.
2019                                     //
2020                                     // 3 If the previous member did not end on a character boundary and the distance
2021                                     //   from the end of the previous member to the current member is greater than
2022                                     //   or equal a word width, then we act as in Case 1.
2023
2024                                     const uint64_t character_width = 8;
2025                                     const uint64_t word_width = 32;
2026
2027                                     // Objective-C has invalid DW_AT_bit_offset values in older versions
2028                                     // of clang, so we have to be careful and only insert unnamed bitfields
2029                                     // if we have a new enough clang.
2030                                     bool detect_unnamed_bitfields = true;
2031
2032                                     if (class_language == eLanguageTypeObjC || class_language == eLanguageTypeObjC_plus_plus)
2033                                         detect_unnamed_bitfields = dwarf_cu->Supports_unnamed_objc_bitfields ();
2034
2035                                     if (detect_unnamed_bitfields)
2036                                     {
2037                                         BitfieldInfo anon_field_info;
2038
2039                                         if ((this_field_info.bit_offset % character_width) != 0) // not char aligned
2040                                         {
2041                                             uint64_t last_field_end = 0;
2042
2043                                             if (last_field_info.IsValid())
2044                                                 last_field_end = last_field_info.bit_offset + last_field_info.bit_size;
2045
2046                                             if (this_field_info.bit_offset != last_field_end)
2047                                             {
2048                                                 if (((last_field_end % character_width) == 0) ||                    // case 1
2049                                                     (this_field_info.bit_offset - last_field_end >= word_width))    // case 3
2050                                                 {
2051                                                     anon_field_info.bit_size = this_field_info.bit_offset % character_width;
2052                                                     anon_field_info.bit_offset = this_field_info.bit_offset - anon_field_info.bit_size;
2053                                                 }
2054                                                 else                                                                // case 2
2055                                                 {
2056                                                     anon_field_info.bit_size = this_field_info.bit_offset - last_field_end;
2057                                                     anon_field_info.bit_offset = last_field_end;
2058                                                 }
2059                                             }
2060                                         }
2061
2062                                         if (anon_field_info.IsValid())
2063                                         {
2064                                             clang::FieldDecl *unnamed_bitfield_decl = class_clang_type.AddFieldToRecordType (NULL,
2065                                                                                                                              GetClangASTContext().GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, word_width),
2066                                                                                                                              accessibility,
2067                                                                                                                              anon_field_info.bit_size);
2068
2069                                             layout_info.field_offsets.insert(std::make_pair(unnamed_bitfield_decl, anon_field_info.bit_offset));
2070                                         }
2071                                     }
2072                                     last_field_info = this_field_info;
2073                                 }
2074                                 else
2075                                 {
2076                                     last_field_info.Clear();
2077                                 }
2078
2079                                 ClangASTType member_clang_type = member_type->GetClangLayoutType();
2080
2081                                 {
2082                                     // Older versions of clang emit array[0] and array[1] in the same way (<rdar://problem/12566646>).
2083                                     // If the current field is at the end of the structure, then there is definitely no room for extra
2084                                     // elements and we override the type to array[0].
2085
2086                                     ClangASTType member_array_element_type;
2087                                     uint64_t member_array_size;
2088                                     bool member_array_is_incomplete;
2089
2090                                     if (member_clang_type.IsArrayType(&member_array_element_type,
2091                                                                       &member_array_size,
2092                                                                       &member_array_is_incomplete) &&
2093                                         !member_array_is_incomplete)
2094                                     {
2095                                         uint64_t parent_byte_size = parent_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, UINT64_MAX);
2096
2097                                         if (member_byte_offset >= parent_byte_size)
2098                                         {
2099                                             if (member_array_size != 1)
2100                                             {
2101                                                 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,
2102                                                                                            MakeUserID(die->GetOffset()),
2103                                                                                            name,
2104                                                                                            encoding_uid,
2105                                                                                            MakeUserID(parent_die->GetOffset()));
2106                                             }
2107
2108                                             member_clang_type = GetClangASTContext().CreateArrayType(member_array_element_type, 0, false);
2109                                         }
2110                                     }
2111                                 }
2112
2113                                 field_decl = class_clang_type.AddFieldToRecordType (name,
2114                                                                                     member_clang_type,
2115                                                                                     accessibility,
2116                                                                                     bit_size);
2117
2118                                 GetClangASTContext().SetMetadataAsUserID (field_decl, MakeUserID(die->GetOffset()));
2119
2120                                 layout_info.field_offsets.insert(std::make_pair(field_decl, field_bit_offset));
2121
2122                             }
2123                             else
2124                             {
2125                                 if (name)
2126                                     GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 " which was unable to be parsed",
2127                                                                                MakeUserID(die->GetOffset()),
2128                                                                                name,
2129                                                                                encoding_uid);
2130                                 else
2131                                     GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member refers to type 0x%8.8" PRIx64 " which was unable to be parsed",
2132                                                                                MakeUserID(die->GetOffset()),
2133                                                                                encoding_uid);
2134                             }
2135                         }
2136
2137                         if (prop_name != NULL)
2138                         {
2139                             clang::ObjCIvarDecl *ivar_decl = NULL;
2140
2141                             if (field_decl)
2142                             {
2143                                 ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl);
2144                                 assert (ivar_decl != NULL);
2145                             }
2146
2147                             ClangASTMetadata metadata;
2148                             metadata.SetUserID (MakeUserID(die->GetOffset()));
2149                             delayed_properties.push_back(DelayedAddObjCClassProperty(class_clang_type,
2150                                                                                      prop_name,
2151                                                                                      member_type->GetClangLayoutType(),
2152                                                                                      ivar_decl,
2153                                                                                      prop_setter_name,
2154                                                                                      prop_getter_name,
2155                                                                                      prop_attributes,
2156                                                                                      &metadata));
2157
2158                             if (ivar_decl)
2159                                 GetClangASTContext().SetMetadataAsUserID (ivar_decl, MakeUserID(die->GetOffset()));
2160                         }
2161                     }
2162                 }
2163                 ++member_idx;
2164             }
2165             break;
2166
2167         case DW_TAG_subprogram:
2168             // Let the type parsing code handle this one for us.
2169             member_function_dies.Append (die);
2170             break;
2171
2172         case DW_TAG_inheritance:
2173             {
2174                 is_a_class = true;
2175                 if (default_accessibility == eAccessNone)
2176                     default_accessibility = eAccessPrivate;
2177                 // TODO: implement DW_TAG_inheritance type parsing
2178                 DWARFDebugInfoEntry::Attributes attributes;
2179                 const size_t num_attributes = die->GetAttributes (this,
2180                                                                   dwarf_cu,
2181                                                                   fixed_form_sizes,
2182                                                                   attributes);
2183                 if (num_attributes > 0)
2184                 {
2185                     Declaration decl;
2186                     DWARFExpression location;
2187                     lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
2188                     AccessType accessibility = default_accessibility;
2189                     bool is_virtual = false;
2190                     bool is_base_of_class = true;
2191                     off_t member_byte_offset = 0;
2192                     uint32_t i;
2193                     for (i=0; i<num_attributes; ++i)
2194                     {
2195                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
2196                         DWARFFormValue form_value;
2197                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
2198                         {
2199                             switch (attr)
2200                             {
2201                             case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
2202                             case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
2203                             case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
2204                             case DW_AT_type:        encoding_uid = form_value.Reference(dwarf_cu); break;
2205                             case DW_AT_data_member_location:
2206                                 if (form_value.BlockData())
2207                                 {
2208                                     Value initialValue(0);
2209                                     Value memberOffset(0);
2210                                     const DWARFDataExtractor& debug_info_data = get_debug_info_data();
2211                                     uint32_t block_length = form_value.Unsigned();
2212                                     uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
2213                                     if (DWARFExpression::Evaluate (NULL,
2214                                                                    NULL,
2215                                                                    NULL,
2216                                                                    NULL,
2217                                                                    module,
2218                                                                    debug_info_data,
2219                                                                    block_offset,
2220                                                                    block_length,
2221                                                                    eRegisterKindDWARF,
2222                                                                    &initialValue,
2223                                                                    memberOffset,
2224                                                                    NULL))
2225                                     {
2226                                         member_byte_offset = memberOffset.ResolveValue(NULL).UInt();
2227                                     }
2228                                 }
2229                                 else
2230                                 {
2231                                     // With DWARF 3 and later, if the value is an integer constant,
2232                                     // this form value is the offset in bytes from the beginning
2233                                     // of the containing entity.
2234                                     member_byte_offset = form_value.Unsigned();
2235                                 }
2236                                 break;
2237
2238                             case DW_AT_accessibility:
2239                                 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
2240                                 break;
2241
2242                             case DW_AT_virtuality:
2243                                 is_virtual = form_value.Boolean();
2244                                 break;
2245
2246                             case DW_AT_sibling:
2247                                 break;
2248
2249                             default:
2250                                 break;
2251                             }
2252                         }
2253                     }
2254
2255                     Type *base_class_type = ResolveTypeUID(encoding_uid);
2256                     assert(base_class_type);
2257
2258                     ClangASTType base_class_clang_type = base_class_type->GetClangFullType();
2259                     assert (base_class_clang_type);
2260                     if (class_language == eLanguageTypeObjC)
2261                     {
2262                         class_clang_type.SetObjCSuperClass(base_class_clang_type);
2263                     }
2264                     else
2265                     {
2266                         base_classes.push_back (base_class_clang_type.CreateBaseClassSpecifier (accessibility,
2267                                                                                                is_virtual,
2268                                                                                                is_base_of_class));
2269
2270                         if (is_virtual)
2271                         {
2272                             // Do not specify any offset for virtual inheritance. The DWARF produced by clang doesn't
2273                             // give us a constant offset, but gives us a DWARF expressions that requires an actual object
2274                             // in memory. the DW_AT_data_member_location for a virtual base class looks like:
2275                             //      DW_AT_data_member_location( DW_OP_dup, DW_OP_deref, DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref, DW_OP_plus )
2276                             // Given this, there is really no valid response we can give to clang for virtual base
2277                             // class offsets, and this should eventually be removed from LayoutRecordType() in the external
2278                             // AST source in clang.
2279                         }
2280                         else
2281                         {
2282                             layout_info.base_offsets.insert(std::make_pair(base_class_clang_type.GetAsCXXRecordDecl(),
2283                                                                            clang::CharUnits::fromQuantity(member_byte_offset)));
2284                         }
2285                     }
2286                 }
2287             }
2288             break;
2289
2290         default:
2291             break;
2292         }
2293     }
2294
2295     return count;
2296 }
2297
2298
2299 clang::DeclContext*
2300 SymbolFileDWARF::GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid)
2301 {
2302     DWARFDebugInfo* debug_info = DebugInfo();
2303     if (debug_info && UserIDMatches(type_uid))
2304     {
2305         DWARFCompileUnitSP cu_sp;
2306         const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(type_uid, &cu_sp);
2307         if (die)
2308             return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL);
2309     }
2310     return NULL;
2311 }
2312
2313 clang::DeclContext*
2314 SymbolFileDWARF::GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid)
2315 {
2316     if (UserIDMatches(type_uid))
2317         return GetClangDeclContextForDIEOffset (sc, type_uid);
2318     return NULL;
2319 }
2320
2321 Type*
2322 SymbolFileDWARF::ResolveTypeUID (lldb::user_id_t type_uid)
2323 {
2324     if (UserIDMatches(type_uid))
2325     {
2326         DWARFDebugInfo* debug_info = DebugInfo();
2327         if (debug_info)
2328         {
2329             DWARFCompileUnitSP cu_sp;
2330             const DWARFDebugInfoEntry* type_die = debug_info->GetDIEPtr(type_uid, &cu_sp);
2331             const bool assert_not_being_parsed = true;
2332             return ResolveTypeUID (cu_sp.get(), type_die, assert_not_being_parsed);
2333         }
2334     }
2335     return NULL;
2336 }
2337
2338 Type*
2339 SymbolFileDWARF::ResolveTypeUID (DWARFCompileUnit* cu, const DWARFDebugInfoEntry* die, bool assert_not_being_parsed)
2340 {
2341     if (die != NULL)
2342     {
2343         Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
2344         if (log)
2345             GetObjectFile()->GetModule()->LogMessage (log,
2346                                                       "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s'",
2347                                                       die->GetOffset(),
2348                                                       DW_TAG_value_to_name(die->Tag()),
2349                                                       die->GetName(this, cu));
2350
2351         // We might be coming in in the middle of a type tree (a class
2352         // withing a class, an enum within a class), so parse any needed
2353         // parent DIEs before we get to this one...
2354         const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die);
2355         switch (decl_ctx_die->Tag())
2356         {
2357             case DW_TAG_structure_type:
2358             case DW_TAG_union_type:
2359             case DW_TAG_class_type:
2360             {
2361                 // Get the type, which could be a forward declaration
2362                 if (log)
2363                     GetObjectFile()->GetModule()->LogMessage (log,
2364                                                               "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent forward type for 0x%8.8x",
2365                                                               die->GetOffset(),
2366                                                               DW_TAG_value_to_name(die->Tag()),
2367                                                               die->GetName(this, cu),
2368                                                               decl_ctx_die->GetOffset());
2369 //
2370 //                Type *parent_type = ResolveTypeUID (cu, decl_ctx_die, assert_not_being_parsed);
2371 //                if (child_requires_parent_class_union_or_struct_to_be_completed(die->Tag()))
2372 //                {
2373 //                    if (log)
2374 //                        GetObjectFile()->GetModule()->LogMessage (log,
2375 //                                                                  "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent full type for 0x%8.8x since die is a function",
2376 //                                                                  die->GetOffset(),
2377 //                                                                  DW_TAG_value_to_name(die->Tag()),
2378 //                                                                  die->GetName(this, cu),
2379 //                                                                  decl_ctx_die->GetOffset());
2380 //                    // Ask the type to complete itself if it already hasn't since if we
2381 //                    // want a function (method or static) from a class, the class must
2382 //                    // create itself and add it's own methods and class functions.
2383 //                    if (parent_type)
2384 //                        parent_type->GetClangFullType();
2385 //                }
2386             }
2387             break;
2388
2389             default:
2390                 break;
2391         }
2392         return ResolveType (cu, die);
2393     }
2394     return NULL;
2395 }
2396
2397 // This function is used when SymbolFileDWARFDebugMap owns a bunch of
2398 // SymbolFileDWARF objects to detect if this DWARF file is the one that
2399 // can resolve a clang_type.
2400 bool
2401 SymbolFileDWARF::HasForwardDeclForClangType (const ClangASTType &clang_type)
2402 {
2403     ClangASTType clang_type_no_qualifiers = clang_type.RemoveFastQualifiers();
2404     const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers.GetOpaqueQualType());
2405     return die != NULL;
2406 }
2407
2408
2409 bool
2410 SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (ClangASTType &clang_type)
2411 {
2412     // We have a struct/union/class/enum that needs to be fully resolved.
2413     ClangASTType clang_type_no_qualifiers = clang_type.RemoveFastQualifiers();
2414     const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers.GetOpaqueQualType());
2415     if (die == NULL)
2416     {
2417         // We have already resolved this type...
2418         return true;
2419     }
2420     // Once we start resolving this type, remove it from the forward declaration
2421     // map in case anyone child members or other types require this type to get resolved.
2422     // The type will get resolved when all of the calls to SymbolFileDWARF::ResolveClangOpaqueTypeDefinition
2423     // are done.
2424     m_forward_decl_clang_type_to_die.erase (clang_type_no_qualifiers.GetOpaqueQualType());
2425
2426     // Disable external storage for this type so we don't get anymore
2427     // clang::ExternalASTSource queries for this type.
2428     clang_type.SetHasExternalStorage (false);
2429
2430     DWARFDebugInfo* debug_info = DebugInfo();
2431
2432     DWARFCompileUnit *dwarf_cu = debug_info->GetCompileUnitContainingDIE (die->GetOffset()).get();
2433     Type *type = m_die_to_type.lookup (die);
2434
2435     const dw_tag_t tag = die->Tag();
2436
2437     Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION));
2438     if (log)
2439         GetObjectFile()->GetModule()->LogMessageVerboseBacktrace (log,
2440                                                                   "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...",
2441                                                                   MakeUserID(die->GetOffset()),
2442                                                                   DW_TAG_value_to_name(tag),
2443                                                                   type->GetName().AsCString());
2444     assert (clang_type);
2445     DWARFDebugInfoEntry::Attributes attributes;
2446
2447     switch (tag)
2448     {
2449     case DW_TAG_structure_type:
2450     case DW_TAG_union_type:
2451     case DW_TAG_class_type:
2452         {
2453             LayoutInfo layout_info;
2454
2455             {
2456                 if (die->HasChildren())
2457                 {
2458                     LanguageType class_language = eLanguageTypeUnknown;
2459                     if (clang_type.IsObjCObjectOrInterfaceType())
2460                     {
2461                         class_language = eLanguageTypeObjC;
2462                         // For objective C we don't start the definition when
2463                         // the class is created.
2464                         clang_type.StartTagDeclarationDefinition ();
2465                     }
2466
2467                     int tag_decl_kind = -1;
2468                     AccessType default_accessibility = eAccessNone;
2469                     if (tag == DW_TAG_structure_type)
2470                     {
2471                         tag_decl_kind = clang::TTK_Struct;
2472                         default_accessibility = eAccessPublic;
2473                     }
2474                     else if (tag == DW_TAG_union_type)
2475                     {
2476                         tag_decl_kind = clang::TTK_Union;
2477                         default_accessibility = eAccessPublic;
2478                     }
2479                     else if (tag == DW_TAG_class_type)
2480                     {
2481                         tag_decl_kind = clang::TTK_Class;
2482                         default_accessibility = eAccessPrivate;
2483                     }
2484
2485                     SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
2486                     std::vector<clang::CXXBaseSpecifier *> base_classes;
2487                     std::vector<int> member_accessibilities;
2488                     bool is_a_class = false;
2489                     // Parse members and base classes first
2490                     DWARFDIECollection member_function_dies;
2491
2492                     DelayedPropertyList delayed_properties;
2493                     ParseChildMembers (sc,
2494                                        dwarf_cu,
2495                                        die,
2496                                        clang_type,
2497                                        class_language,
2498                                        base_classes,
2499                                        member_accessibilities,
2500                                        member_function_dies,
2501                                        delayed_properties,
2502                                        default_accessibility,
2503                                        is_a_class,
2504                                        layout_info);
2505
2506                     // Now parse any methods if there were any...
2507                     size_t num_functions = member_function_dies.Size();
2508                     if (num_functions > 0)
2509                     {
2510                         for (size_t i=0; i<num_functions; ++i)
2511                         {
2512                             ResolveType(dwarf_cu, member_function_dies.GetDIEPtrAtIndex(i));
2513                         }
2514                     }
2515
2516                     if (class_language == eLanguageTypeObjC)
2517                     {
2518                         ConstString class_name (clang_type.GetTypeName());
2519                         if (class_name)
2520                         {
2521                             DIEArray method_die_offsets;
2522                             if (m_using_apple_tables)
2523                             {
2524                                 if (m_apple_objc_ap.get())
2525                                     m_apple_objc_ap->FindByName(class_name.GetCString(), method_die_offsets);
2526                             }
2527                             else
2528                             {
2529                                 if (!m_indexed)
2530                                     Index ();
2531
2532                                 m_objc_class_selectors_index.Find (class_name, method_die_offsets);
2533                             }
2534
2535                             if (!method_die_offsets.empty())
2536                             {
2537                                 DWARFDebugInfo* debug_info = DebugInfo();
2538
2539                                 DWARFCompileUnit* method_cu = NULL;
2540                                 const size_t num_matches = method_die_offsets.size();
2541                                 for (size_t i=0; i<num_matches; ++i)
2542                                 {
2543                                     const dw_offset_t die_offset = method_die_offsets[i];
2544                                     DWARFDebugInfoEntry *method_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &method_cu);
2545
2546                                     if (method_die)
2547                                         ResolveType (method_cu, method_die);
2548                                     else
2549                                     {
2550                                         if (m_using_apple_tables)
2551                                         {
2552                                             GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_objc accelerator table had bad die 0x%8.8x for '%s')\n",
2553                                                                                                        die_offset, class_name.GetCString());
2554                                         }
2555                                     }
2556                                 }
2557                             }
2558
2559                             for (DelayedPropertyList::iterator pi = delayed_properties.begin(), pe = delayed_properties.end();
2560                                  pi != pe;
2561                                  ++pi)
2562                                 pi->Finalize();
2563                         }
2564                     }
2565
2566                     // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we
2567                     // need to tell the clang type it is actually a class.
2568                     if (class_language != eLanguageTypeObjC)
2569                     {
2570                         if (is_a_class && tag_decl_kind != clang::TTK_Class)
2571                             clang_type.SetTagTypeKind (clang::TTK_Class);
2572                     }
2573
2574                     // Since DW_TAG_structure_type gets used for both classes
2575                     // and structures, we may need to set any DW_TAG_member
2576                     // fields to have a "private" access if none was specified.
2577                     // When we parsed the child members we tracked that actual
2578                     // accessibility value for each DW_TAG_member in the
2579                     // "member_accessibilities" array. If the value for the
2580                     // member is zero, then it was set to the "default_accessibility"
2581                     // which for structs was "public". Below we correct this
2582                     // by setting any fields to "private" that weren't correctly
2583                     // set.
2584                     if (is_a_class && !member_accessibilities.empty())
2585                     {
2586                         // This is a class and all members that didn't have
2587                         // their access specified are private.
2588                         clang_type.SetDefaultAccessForRecordFields (eAccessPrivate,
2589                                                                     &member_accessibilities.front(),
2590                                                                     member_accessibilities.size());
2591                     }
2592
2593                     if (!base_classes.empty())
2594                     {
2595                         // Make sure all base classes refer to complete types and not
2596                         // forward declarations. If we don't do this, clang will crash
2597                         // with an assertion in the call to clang_type.SetBaseClassesForClassType()
2598                         bool base_class_error = false;
2599                         for (auto &base_class : base_classes)
2600                         {
2601                             clang::TypeSourceInfo *type_source_info = base_class->getTypeSourceInfo();
2602                             if (type_source_info)
2603                             {
2604                                 ClangASTType base_class_type (GetClangASTContext().getASTContext(), type_source_info->getType());
2605                                 if (base_class_type.GetCompleteType() == false)
2606                                 {
2607                                     if (!base_class_error)
2608                                     {
2609                                         GetObjectFile()->GetModule()->ReportError ("DWARF DIE at 0x%8.8x for class '%s' has a base class '%s' that is a forward declaration, not a complete definition.\nPlease file a bug against the compiler and include the preprocessed output for %s",
2610                                                                                    die->GetOffset(),
2611                                                                                    die->GetName(this, dwarf_cu),
2612                                                                                    base_class_type.GetTypeName().GetCString(),
2613                                                                                    sc.comp_unit ? sc.comp_unit->GetPath().c_str() : "the source file");
2614                                     }
2615                                     // We have no choice other than to pretend that the base class
2616                                     // is complete. If we don't do this, clang will crash when we
2617                                     // call setBases() inside of "clang_type.SetBaseClassesForClassType()"
2618                                     // below. Since we provide layout assistance, all ivars in this
2619                                     // class and other classes will be fine, this is the best we can do
2620                                     // short of crashing.
2621                                     base_class_type.StartTagDeclarationDefinition ();
2622                                     base_class_type.CompleteTagDeclarationDefinition ();
2623                                 }
2624                             }
2625                         }
2626                         clang_type.SetBaseClassesForClassType (&base_classes.front(),
2627                                                                base_classes.size());
2628
2629                         // Clang will copy each CXXBaseSpecifier in "base_classes"
2630                         // so we have to free them all.
2631                         ClangASTType::DeleteBaseClassSpecifiers (&base_classes.front(),
2632                                                                  base_classes.size());
2633                     }
2634                 }
2635             }
2636
2637             clang_type.BuildIndirectFields ();
2638             clang_type.CompleteTagDeclarationDefinition ();
2639
2640             if (!layout_info.field_offsets.empty() ||
2641                 !layout_info.base_offsets.empty()  ||
2642                 !layout_info.vbase_offsets.empty() )
2643             {
2644                 if (type)
2645                     layout_info.bit_size = type->GetByteSize() * 8;
2646                 if (layout_info.bit_size == 0)
2647                     layout_info.bit_size = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, 0) * 8;
2648
2649                 clang::CXXRecordDecl *record_decl = clang_type.GetAsCXXRecordDecl();
2650                 if (record_decl)
2651                 {
2652                     if (log)
2653                     {
2654                         GetObjectFile()->GetModule()->LogMessage (log,
2655                                                                   "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])",
2656                                                                   static_cast<void*>(clang_type.GetOpaqueQualType()),
2657                                                                   static_cast<void*>(record_decl),
2658                                                                   layout_info.bit_size,
2659                                                                   layout_info.alignment,
2660                                                                   static_cast<uint32_t>(layout_info.field_offsets.size()),
2661                                                                   static_cast<uint32_t>(layout_info.base_offsets.size()),
2662                                                                   static_cast<uint32_t>(layout_info.vbase_offsets.size()));
2663
2664                         uint32_t idx;
2665                         {
2666                         llvm::DenseMap <const clang::FieldDecl *, uint64_t>::const_iterator pos, end = layout_info.field_offsets.end();
2667                         for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; ++pos, ++idx)
2668                         {
2669                             GetObjectFile()->GetModule()->LogMessage (log,
2670                                                                       "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) field[%u] = { bit_offset=%u, name='%s' }",
2671                                                                       static_cast<void*>(clang_type.GetOpaqueQualType()),
2672                                                                       idx,
2673                                                                       static_cast<uint32_t>(pos->second),
2674                                                                       pos->first->getNameAsString().c_str());
2675                         }
2676                         }
2677
2678                         {
2679                         llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator base_pos, base_end = layout_info.base_offsets.end();
2680                         for (idx = 0, base_pos = layout_info.base_offsets.begin(); base_pos != base_end; ++base_pos, ++idx)
2681                         {
2682                             GetObjectFile()->GetModule()->LogMessage (log,
2683                                                                       "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) base[%u] = { byte_offset=%u, name='%s' }",
2684                                                                       clang_type.GetOpaqueQualType(),
2685                                                                       idx,
2686                                                                       (uint32_t)base_pos->second.getQuantity(),
2687                                                                       base_pos->first->getNameAsString().c_str());
2688                         }
2689                         }
2690                         {
2691                         llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator vbase_pos, vbase_end = layout_info.vbase_offsets.end();
2692                         for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); vbase_pos != vbase_end; ++vbase_pos, ++idx)
2693                         {
2694                             GetObjectFile()->GetModule()->LogMessage (log,
2695                                                                       "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) vbase[%u] = { byte_offset=%u, name='%s' }",
2696                                                                       static_cast<void*>(clang_type.GetOpaqueQualType()),
2697                                                                       idx,
2698                                                                       static_cast<uint32_t>(vbase_pos->second.getQuantity()),
2699                                                                       vbase_pos->first->getNameAsString().c_str());
2700                         }
2701                         }
2702                     }
2703                     m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info));
2704                 }
2705             }
2706         }
2707
2708         return (bool)clang_type;
2709
2710     case DW_TAG_enumeration_type:
2711         clang_type.StartTagDeclarationDefinition ();
2712         if (die->HasChildren())
2713         {
2714             SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
2715             bool is_signed = false;
2716             clang_type.IsIntegerType(is_signed);
2717             ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), dwarf_cu, die);
2718         }
2719         clang_type.CompleteTagDeclarationDefinition ();
2720         return (bool)clang_type;
2721
2722     default:
2723         assert(false && "not a forward clang type decl!");
2724         break;
2725     }
2726     return false;
2727 }
2728
2729 Type*
2730 SymbolFileDWARF::ResolveType (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* type_die, bool assert_not_being_parsed)
2731 {
2732     if (type_die != NULL)
2733     {
2734         Type *type = m_die_to_type.lookup (type_die);
2735
2736         if (type == NULL)
2737             type = GetTypeForDIE (dwarf_cu, type_die).get();
2738
2739         if (assert_not_being_parsed)
2740         {
2741             if (type != DIE_IS_BEING_PARSED)
2742                 return type;
2743
2744             GetObjectFile()->GetModule()->ReportError ("Parsing a die that is being parsed die: 0x%8.8x: %s %s",
2745                                                        type_die->GetOffset(),
2746                                                        DW_TAG_value_to_name(type_die->Tag()),
2747                                                        type_die->GetName(this, dwarf_cu));
2748
2749         }
2750         else
2751             return type;
2752     }
2753     return NULL;
2754 }
2755
2756 CompileUnit*
2757 SymbolFileDWARF::GetCompUnitForDWARFCompUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx)
2758 {
2759     // Check if the symbol vendor already knows about this compile unit?
2760     if (dwarf_cu->GetUserData() == NULL)
2761     {
2762         // The symbol vendor doesn't know about this compile unit, we
2763         // need to parse and add it to the symbol vendor object.
2764         return ParseCompileUnit(dwarf_cu, cu_idx).get();
2765     }
2766     return (CompileUnit*)dwarf_cu->GetUserData();
2767 }
2768
2769 bool
2770 SymbolFileDWARF::GetFunction (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* func_die, SymbolContext& sc)
2771 {
2772     sc.Clear(false);
2773     // Check if the symbol vendor already knows about this compile unit?
2774     sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
2775
2776     sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(func_die->GetOffset())).get();
2777     if (sc.function == NULL)
2778         sc.function = ParseCompileUnitFunction(sc, dwarf_cu, func_die);
2779
2780     if (sc.function)
2781     {
2782         sc.module_sp = sc.function->CalculateSymbolContextModule();
2783         return true;
2784     }
2785
2786     return false;
2787 }
2788
2789 uint32_t
2790 SymbolFileDWARF::ResolveSymbolContext (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc)
2791 {
2792     Timer scoped_timer(__PRETTY_FUNCTION__,
2793                        "SymbolFileDWARF::ResolveSymbolContext (so_addr = { section = %p, offset = 0x%" PRIx64 " }, resolve_scope = 0x%8.8x)",
2794                        static_cast<void*>(so_addr.GetSection().get()),
2795                        so_addr.GetOffset(), resolve_scope);
2796     uint32_t resolved = 0;
2797     if (resolve_scope & (   eSymbolContextCompUnit |
2798                             eSymbolContextFunction |
2799                             eSymbolContextBlock |
2800                             eSymbolContextLineEntry))
2801     {
2802         lldb::addr_t file_vm_addr = so_addr.GetFileAddress();
2803
2804         DWARFDebugInfo* debug_info = DebugInfo();
2805         if (debug_info)
2806         {
2807             const dw_offset_t cu_offset = debug_info->GetCompileUnitAranges().FindAddress(file_vm_addr);
2808             if (cu_offset != DW_INVALID_OFFSET)
2809             {
2810                 uint32_t cu_idx = DW_INVALID_INDEX;
2811                 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnit(cu_offset, &cu_idx).get();
2812                 if (dwarf_cu)
2813                 {
2814                     sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2815                     if (sc.comp_unit)
2816                     {
2817                         resolved |= eSymbolContextCompUnit;
2818
2819                         bool force_check_line_table = false;
2820                         if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock))
2821                         {
2822                             DWARFDebugInfoEntry *function_die = NULL;
2823                             DWARFDebugInfoEntry *block_die = NULL;
2824                             if (resolve_scope & eSymbolContextBlock)
2825                             {
2826                                 dwarf_cu->LookupAddress(file_vm_addr, &function_die, &block_die);
2827                             }
2828                             else
2829                             {
2830                                 dwarf_cu->LookupAddress(file_vm_addr, &function_die, NULL);
2831                             }
2832
2833                             if (function_die != NULL)
2834                             {
2835                                 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get();
2836                                 if (sc.function == NULL)
2837                                     sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die);
2838                             }
2839                             else
2840                             {
2841                                 // We might have had a compile unit that had discontiguous
2842                                 // address ranges where the gaps are symbols that don't have
2843                                 // any debug info. Discontiguous compile unit address ranges
2844                                 // should only happen when there aren't other functions from
2845                                 // other compile units in these gaps. This helps keep the size
2846                                 // of the aranges down.
2847                                 force_check_line_table = true;
2848                             }
2849
2850                             if (sc.function != NULL)
2851                             {
2852                                 resolved |= eSymbolContextFunction;
2853
2854                                 if (resolve_scope & eSymbolContextBlock)
2855                                 {
2856                                     Block& block = sc.function->GetBlock (true);
2857
2858                                     if (block_die != NULL)
2859                                         sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset()));
2860                                     else
2861                                         sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset()));
2862                                     if (sc.block)
2863                                         resolved |= eSymbolContextBlock;
2864                                 }
2865                             }
2866                         }
2867
2868                         if ((resolve_scope & eSymbolContextLineEntry) || force_check_line_table)
2869                         {
2870                             LineTable *line_table = sc.comp_unit->GetLineTable();
2871                             if (line_table != NULL)
2872                             {
2873                                 // And address that makes it into this function should be in terms
2874                                 // of this debug file if there is no debug map, or it will be an
2875                                 // address in the .o file which needs to be fixed up to be in terms
2876                                 // of the debug map executable. Either way, calling FixupAddress()
2877                                 // will work for us.
2878                                 Address exe_so_addr (so_addr);
2879                                 if (FixupAddress(exe_so_addr))
2880                                 {
2881                                     if (line_table->FindLineEntryByAddress (exe_so_addr, sc.line_entry))
2882                                     {
2883                                         resolved |= eSymbolContextLineEntry;
2884                                     }
2885                                 }
2886                             }
2887                         }
2888
2889                         if (force_check_line_table && !(resolved & eSymbolContextLineEntry))
2890                         {
2891                             // We might have had a compile unit that had discontiguous
2892                             // address ranges where the gaps are symbols that don't have
2893                             // any debug info. Discontiguous compile unit address ranges
2894                             // should only happen when there aren't other functions from
2895                             // other compile units in these gaps. This helps keep the size
2896                             // of the aranges down.
2897                             sc.comp_unit = NULL;
2898                             resolved &= ~eSymbolContextCompUnit;
2899                         }
2900                     }
2901                     else
2902                     {
2903                         GetObjectFile()->GetModule()->ReportWarning ("0x%8.8x: compile unit %u failed to create a valid lldb_private::CompileUnit class.",
2904                                                                      cu_offset,
2905                                                                      cu_idx);
2906                     }
2907                 }
2908             }
2909         }
2910     }
2911     return resolved;
2912 }
2913
2914
2915
2916 uint32_t
2917 SymbolFileDWARF::ResolveSymbolContext(const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list)
2918 {
2919     const uint32_t prev_size = sc_list.GetSize();
2920     if (resolve_scope & eSymbolContextCompUnit)
2921     {
2922         DWARFDebugInfo* debug_info = DebugInfo();
2923         if (debug_info)
2924         {
2925             uint32_t cu_idx;
2926             DWARFCompileUnit* dwarf_cu = NULL;
2927
2928             for (cu_idx = 0; (dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx)) != NULL; ++cu_idx)
2929             {
2930                 CompileUnit *dc_cu = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2931                 const bool full_match = (bool)file_spec.GetDirectory();
2932                 bool file_spec_matches_cu_file_spec = dc_cu != NULL && FileSpec::Equal(file_spec, *dc_cu, full_match);
2933                 if (check_inlines || file_spec_matches_cu_file_spec)
2934                 {
2935                     SymbolContext sc (m_obj_file->GetModule());
2936                     sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2937                     if (sc.comp_unit)
2938                     {
2939                         uint32_t file_idx = UINT32_MAX;
2940
2941                         // If we are looking for inline functions only and we don't
2942                         // find it in the support files, we are done.
2943                         if (check_inlines)
2944                         {
2945                             file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true);
2946                             if (file_idx == UINT32_MAX)
2947                                 continue;
2948                         }
2949
2950                         if (line != 0)
2951                         {
2952                             LineTable *line_table = sc.comp_unit->GetLineTable();
2953
2954                             if (line_table != NULL && line != 0)
2955                             {
2956                                 // We will have already looked up the file index if
2957                                 // we are searching for inline entries.
2958                                 if (!check_inlines)
2959                                     file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true);
2960
2961                                 if (file_idx != UINT32_MAX)
2962                                 {
2963                                     uint32_t found_line;
2964                                     uint32_t line_idx = line_table->FindLineEntryIndexByFileIndex (0, file_idx, line, false, &sc.line_entry);
2965                                     found_line = sc.line_entry.line;
2966
2967                                     while (line_idx != UINT32_MAX)
2968                                     {
2969                                         sc.function = NULL;
2970                                         sc.block = NULL;
2971                                         if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock))
2972                                         {
2973                                             const lldb::addr_t file_vm_addr = sc.line_entry.range.GetBaseAddress().GetFileAddress();
2974                                             if (file_vm_addr != LLDB_INVALID_ADDRESS)
2975                                             {
2976                                                 DWARFDebugInfoEntry *function_die = NULL;
2977                                                 DWARFDebugInfoEntry *block_die = NULL;
2978                                                 dwarf_cu->LookupAddress(file_vm_addr, &function_die, resolve_scope & eSymbolContextBlock ? &block_die : NULL);
2979
2980                                                 if (function_die != NULL)
2981                                                 {
2982                                                     sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get();
2983                                                     if (sc.function == NULL)
2984                                                         sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die);
2985                                                 }
2986
2987                                                 if (sc.function != NULL)
2988                                                 {
2989                                                     Block& block = sc.function->GetBlock (true);
2990
2991                                                     if (block_die != NULL)
2992                                                         sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset()));
2993                                                     else
2994                                                         sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset()));
2995                                                 }
2996                                             }
2997                                         }
2998
2999                                         sc_list.Append(sc);
3000                                         line_idx = line_table->FindLineEntryIndexByFileIndex (line_idx + 1, file_idx, found_line, true, &sc.line_entry);
3001                                     }
3002                                 }
3003                             }
3004                             else if (file_spec_matches_cu_file_spec && !check_inlines)
3005                             {
3006                                 // only append the context if we aren't looking for inline call sites
3007                                 // by file and line and if the file spec matches that of the compile unit
3008                                 sc_list.Append(sc);
3009                             }
3010                         }
3011                         else if (file_spec_matches_cu_file_spec && !check_inlines)
3012                         {
3013                             // only append the context if we aren't looking for inline call sites
3014                             // by file and line and if the file spec matches that of the compile unit
3015                             sc_list.Append(sc);
3016                         }
3017
3018                         if (!check_inlines)
3019                             break;
3020                     }
3021                 }
3022             }
3023         }
3024     }
3025     return sc_list.GetSize() - prev_size;
3026 }
3027
3028 void
3029 SymbolFileDWARF::Index ()
3030 {
3031     if (m_indexed)
3032         return;
3033     m_indexed = true;
3034     Timer scoped_timer (__PRETTY_FUNCTION__,
3035                         "SymbolFileDWARF::Index (%s)",
3036                         GetObjectFile()->GetFileSpec().GetFilename().AsCString());
3037
3038     DWARFDebugInfo* debug_info = DebugInfo();
3039     if (debug_info)
3040     {
3041         uint32_t cu_idx = 0;
3042         const uint32_t num_compile_units = GetNumCompileUnits();
3043         for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx)
3044         {
3045             DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx);
3046
3047             bool clear_dies = dwarf_cu->ExtractDIEsIfNeeded (false) > 1;
3048
3049             dwarf_cu->Index (cu_idx,
3050                              m_function_basename_index,
3051                              m_function_fullname_index,
3052                              m_function_method_index,
3053                              m_function_selector_index,
3054                              m_objc_class_selectors_index,
3055                              m_global_index,
3056                              m_type_index,
3057                              m_namespace_index);
3058
3059             // Keep memory down by clearing DIEs if this generate function
3060             // caused them to be parsed
3061             if (clear_dies)
3062                 dwarf_cu->ClearDIEs (true);
3063         }
3064
3065         m_function_basename_index.Finalize();
3066         m_function_fullname_index.Finalize();
3067         m_function_method_index.Finalize();
3068         m_function_selector_index.Finalize();
3069         m_objc_class_selectors_index.Finalize();
3070         m_global_index.Finalize();
3071         m_type_index.Finalize();
3072         m_namespace_index.Finalize();
3073
3074 #if defined (ENABLE_DEBUG_PRINTF)
3075         StreamFile s(stdout, false);
3076         s.Printf ("DWARF index for '%s':",
3077                   GetObjectFile()->GetFileSpec().GetPath().c_str());
3078         s.Printf("\nFunction basenames:\n");    m_function_basename_index.Dump (&s);
3079         s.Printf("\nFunction fullnames:\n");    m_function_fullname_index.Dump (&s);
3080         s.Printf("\nFunction methods:\n");      m_function_method_index.Dump (&s);
3081         s.Printf("\nFunction selectors:\n");    m_function_selector_index.Dump (&s);
3082         s.Printf("\nObjective C class selectors:\n");    m_objc_class_selectors_index.Dump (&s);
3083         s.Printf("\nGlobals and statics:\n");   m_global_index.Dump (&s);
3084         s.Printf("\nTypes:\n");                 m_type_index.Dump (&s);
3085         s.Printf("\nNamepaces:\n");             m_namespace_index.Dump (&s);
3086 #endif
3087     }
3088 }
3089
3090 bool
3091 SymbolFileDWARF::NamespaceDeclMatchesThisSymbolFile (const ClangNamespaceDecl *namespace_decl)
3092 {
3093     if (namespace_decl == NULL)
3094     {
3095         // Invalid namespace decl which means we aren't matching only things
3096         // in this symbol file, so return true to indicate it matches this
3097         // symbol file.
3098         return true;
3099     }
3100
3101     clang::ASTContext *namespace_ast = namespace_decl->GetASTContext();
3102
3103     if (namespace_ast == NULL)
3104         return true;    // No AST in the "namespace_decl", return true since it
3105                         // could then match any symbol file, including this one
3106
3107     if (namespace_ast == GetClangASTContext().getASTContext())
3108         return true;    // The ASTs match, return true
3109
3110     // The namespace AST was valid, and it does not match...
3111     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3112
3113     if (log)
3114         GetObjectFile()->GetModule()->LogMessage(log, "Valid namespace does not match symbol file");
3115
3116     return false;
3117 }
3118
3119 bool
3120 SymbolFileDWARF::DIEIsInNamespace (const ClangNamespaceDecl *namespace_decl,
3121                                    DWARFCompileUnit* cu,
3122                                    const DWARFDebugInfoEntry* die)
3123 {
3124     // No namespace specified, so the answer is
3125     if (namespace_decl == NULL)
3126         return true;
3127
3128     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3129
3130     const DWARFDebugInfoEntry *decl_ctx_die = NULL;
3131     clang::DeclContext *die_clang_decl_ctx = GetClangDeclContextContainingDIE (cu, die, &decl_ctx_die);
3132     if (decl_ctx_die)
3133     {
3134         clang::NamespaceDecl *clang_namespace_decl = namespace_decl->GetNamespaceDecl();
3135
3136         if (clang_namespace_decl)
3137         {
3138             if (decl_ctx_die->Tag() != DW_TAG_namespace)
3139             {
3140                 if (log)
3141                     GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent is not a namespace");
3142                 return false;
3143             }
3144
3145             if (clang_namespace_decl == die_clang_decl_ctx)
3146                 return true;
3147             else
3148                 return false;
3149         }
3150         else
3151         {
3152             // We have a namespace_decl that was not NULL but it contained
3153             // a NULL "clang::NamespaceDecl", so this means the global namespace
3154             // So as long the contained decl context DIE isn't a namespace
3155             // we should be ok.
3156             if (decl_ctx_die->Tag() != DW_TAG_namespace)
3157                 return true;
3158         }
3159     }
3160
3161     if (log)
3162         GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent doesn't exist");
3163
3164     return false;
3165 }
3166 uint32_t
3167 SymbolFileDWARF::FindGlobalVariables (const ConstString &name, const lldb_private::ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables)
3168 {
3169     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3170
3171     if (log)
3172         GetObjectFile()->GetModule()->LogMessage (log,
3173                                                   "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables)",
3174                                                   name.GetCString(),
3175                                                   static_cast<const void*>(namespace_decl),
3176                                                   append, max_matches);
3177
3178     if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
3179         return 0;
3180
3181     DWARFDebugInfo* info = DebugInfo();
3182     if (info == NULL)
3183         return 0;
3184
3185     // If we aren't appending the results to this list, then clear the list
3186     if (!append)
3187         variables.Clear();
3188
3189     // Remember how many variables are in the list before we search in case
3190     // we are appending the results to a variable list.
3191     const uint32_t original_size = variables.GetSize();
3192
3193     DIEArray die_offsets;
3194
3195     if (m_using_apple_tables)
3196     {
3197         if (m_apple_names_ap.get())
3198         {
3199             const char *name_cstr = name.GetCString();
3200             const char *base_name_start;
3201             const char *base_name_end = NULL;
3202
3203             if (!CPPLanguageRuntime::StripNamespacesFromVariableName(name_cstr, base_name_start, base_name_end))
3204                 base_name_start = name_cstr;
3205
3206             m_apple_names_ap->FindByName (base_name_start, die_offsets);
3207         }
3208     }
3209     else
3210     {
3211         // Index the DWARF if we haven't already
3212         if (!m_indexed)
3213             Index ();
3214
3215         m_global_index.Find (name, die_offsets);
3216     }
3217
3218     const size_t num_die_matches = die_offsets.size();
3219     if (num_die_matches)
3220     {
3221         SymbolContext sc;
3222         sc.module_sp = m_obj_file->GetModule();
3223         assert (sc.module_sp);
3224
3225         DWARFDebugInfo* debug_info = DebugInfo();
3226         DWARFCompileUnit* dwarf_cu = NULL;
3227         const DWARFDebugInfoEntry* die = NULL;
3228         bool done = false;
3229         for (size_t i=0; i<num_die_matches && !done; ++i)
3230         {
3231             const dw_offset_t die_offset = die_offsets[i];
3232             die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3233
3234             if (die)
3235             {
3236                 switch (die->Tag())
3237                 {
3238                     default:
3239                     case DW_TAG_subprogram:
3240                     case DW_TAG_inlined_subroutine:
3241                     case DW_TAG_try_block:
3242                     case DW_TAG_catch_block:
3243                         break;
3244
3245                     case DW_TAG_variable:
3246                         {
3247                             sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
3248
3249                             if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3250                                 continue;
3251
3252                             ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables);
3253
3254                             if (variables.GetSize() - original_size >= max_matches)
3255                                 done = true;
3256                         }
3257                         break;
3258                 }
3259             }
3260             else
3261             {
3262                 if (m_using_apple_tables)
3263                 {
3264                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')\n",
3265                                                                                die_offset, name.GetCString());
3266                 }
3267             }
3268         }
3269     }
3270
3271     // Return the number of variable that were appended to the list
3272     const uint32_t num_matches = variables.GetSize() - original_size;
3273     if (log && num_matches > 0)
3274     {
3275         GetObjectFile()->GetModule()->LogMessage (log,
3276                                                   "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables) => %u",
3277                                                   name.GetCString(),
3278                                                   static_cast<const void*>(namespace_decl),
3279                                                   append, max_matches,
3280                                                   num_matches);
3281     }
3282     return num_matches;
3283 }
3284
3285 uint32_t
3286 SymbolFileDWARF::FindGlobalVariables(const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables)
3287 {
3288     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3289
3290     if (log)
3291     {
3292         GetObjectFile()->GetModule()->LogMessage (log,
3293                                                   "SymbolFileDWARF::FindGlobalVariables (regex=\"%s\", append=%u, max_matches=%u, variables)",
3294                                                   regex.GetText(), append,
3295                                                   max_matches);
3296     }
3297
3298     DWARFDebugInfo* info = DebugInfo();
3299     if (info == NULL)
3300         return 0;
3301
3302     // If we aren't appending the results to this list, then clear the list
3303     if (!append)
3304         variables.Clear();
3305
3306     // Remember how many variables are in the list before we search in case
3307     // we are appending the results to a variable list.
3308     const uint32_t original_size = variables.GetSize();
3309
3310     DIEArray die_offsets;
3311
3312     if (m_using_apple_tables)
3313     {
3314         if (m_apple_names_ap.get())
3315         {
3316             DWARFMappedHash::DIEInfoArray hash_data_array;
3317             if (m_apple_names_ap->AppendAllDIEsThatMatchingRegex (regex, hash_data_array))
3318                 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
3319         }
3320     }
3321     else
3322     {
3323         // Index the DWARF if we haven't already
3324         if (!m_indexed)
3325             Index ();
3326
3327         m_global_index.Find (regex, die_offsets);
3328     }
3329
3330     SymbolContext sc;
3331     sc.module_sp = m_obj_file->GetModule();
3332     assert (sc.module_sp);
3333
3334     DWARFCompileUnit* dwarf_cu = NULL;
3335     const DWARFDebugInfoEntry* die = NULL;
3336     const size_t num_matches = die_offsets.size();
3337     if (num_matches)
3338     {
3339         DWARFDebugInfo* debug_info = DebugInfo();
3340         for (size_t i=0; i<num_matches; ++i)
3341         {
3342             const dw_offset_t die_offset = die_offsets[i];
3343             die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3344
3345             if (die)
3346             {
3347                 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
3348
3349                 ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables);
3350
3351                 if (variables.GetSize() - original_size >= max_matches)
3352                     break;
3353             }
3354             else
3355             {
3356                 if (m_using_apple_tables)
3357                 {
3358                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for regex '%s')\n",
3359                                                                                die_offset, regex.GetText());
3360                 }
3361             }
3362         }
3363     }
3364
3365     // Return the number of variable that were appended to the list
3366     return variables.GetSize() - original_size;
3367 }
3368
3369
3370 bool
3371 SymbolFileDWARF::ResolveFunction (dw_offset_t die_offset,
3372                                   DWARFCompileUnit *&dwarf_cu,
3373                                   SymbolContextList& sc_list)
3374 {
3375     const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3376     return ResolveFunction (dwarf_cu, die, sc_list);
3377 }
3378
3379
3380 bool
3381 SymbolFileDWARF::ResolveFunction (DWARFCompileUnit *cu,
3382                                   const DWARFDebugInfoEntry *die,
3383                                   SymbolContextList& sc_list)
3384 {
3385     SymbolContext sc;
3386
3387     if (die == NULL)
3388         return false;
3389
3390     // If we were passed a die that is not a function, just return false...
3391     if (die->Tag() != DW_TAG_subprogram && die->Tag() != DW_TAG_inlined_subroutine)
3392         return false;
3393
3394     const DWARFDebugInfoEntry* inlined_die = NULL;
3395     if (die->Tag() == DW_TAG_inlined_subroutine)
3396     {
3397         inlined_die = die;
3398
3399         while ((die = die->GetParent()) != NULL)
3400         {
3401             if (die->Tag() == DW_TAG_subprogram)
3402                 break;
3403         }
3404     }
3405     assert (die->Tag() == DW_TAG_subprogram);
3406     if (GetFunction (cu, die, sc))
3407     {
3408         Address addr;
3409         // Parse all blocks if needed
3410         if (inlined_die)
3411         {
3412             sc.block = sc.function->GetBlock (true).FindBlockByID (MakeUserID(inlined_die->GetOffset()));
3413             assert (sc.block != NULL);
3414             if (sc.block->GetStartAddress (addr) == false)
3415                 addr.Clear();
3416         }
3417         else
3418         {
3419             sc.block = NULL;
3420             addr = sc.function->GetAddressRange().GetBaseAddress();
3421         }
3422
3423         if (addr.IsValid())
3424         {
3425             sc_list.Append(sc);
3426             return true;
3427         }
3428     }
3429
3430     return false;
3431 }
3432
3433 void
3434 SymbolFileDWARF::FindFunctions (const ConstString &name,
3435                                 const NameToDIE &name_to_die,
3436                                 SymbolContextList& sc_list)
3437 {
3438     DIEArray die_offsets;
3439     if (name_to_die.Find (name, die_offsets))
3440     {
3441         ParseFunctions (die_offsets, sc_list);
3442     }
3443 }
3444
3445
3446 void
3447 SymbolFileDWARF::FindFunctions (const RegularExpression &regex,
3448                                 const NameToDIE &name_to_die,
3449                                 SymbolContextList& sc_list)
3450 {
3451     DIEArray die_offsets;
3452     if (name_to_die.Find (regex, die_offsets))
3453     {
3454         ParseFunctions (die_offsets, sc_list);
3455     }
3456 }
3457
3458
3459 void
3460 SymbolFileDWARF::FindFunctions (const RegularExpression &regex,
3461                                 const DWARFMappedHash::MemoryTable &memory_table,
3462                                 SymbolContextList& sc_list)
3463 {
3464     DIEArray die_offsets;
3465     DWARFMappedHash::DIEInfoArray hash_data_array;
3466     if (memory_table.AppendAllDIEsThatMatchingRegex (regex, hash_data_array))
3467     {
3468         DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
3469         ParseFunctions (die_offsets, sc_list);
3470     }
3471 }
3472
3473 void
3474 SymbolFileDWARF::ParseFunctions (const DIEArray &die_offsets,
3475                                  SymbolContextList& sc_list)
3476 {
3477     const size_t num_matches = die_offsets.size();
3478     if (num_matches)
3479     {
3480         SymbolContext sc;
3481
3482         DWARFCompileUnit* dwarf_cu = NULL;
3483         for (size_t i=0; i<num_matches; ++i)
3484         {
3485             const dw_offset_t die_offset = die_offsets[i];
3486             ResolveFunction (die_offset, dwarf_cu, sc_list);
3487         }
3488     }
3489 }
3490
3491 bool
3492 SymbolFileDWARF::FunctionDieMatchesPartialName (const DWARFDebugInfoEntry* die,
3493                                                 const DWARFCompileUnit *dwarf_cu,
3494                                                 uint32_t name_type_mask,
3495                                                 const char *partial_name,
3496                                                 const char *base_name_start,
3497                                                 const char *base_name_end)
3498 {
3499     // If we are looking only for methods, throw away all the ones that are or aren't in C++ classes:
3500     if (name_type_mask == eFunctionNameTypeMethod || name_type_mask == eFunctionNameTypeBase)
3501     {
3502         clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIEOffset(die->GetOffset());
3503         if (!containing_decl_ctx)
3504             return false;
3505
3506         bool is_cxx_method = DeclKindIsCXXClass(containing_decl_ctx->getDeclKind());
3507
3508         if (name_type_mask == eFunctionNameTypeMethod)
3509         {
3510             if (is_cxx_method == false)
3511                 return false;
3512         }
3513
3514         if (name_type_mask == eFunctionNameTypeBase)
3515         {
3516             if (is_cxx_method == true)
3517                 return false;
3518         }
3519     }
3520
3521     // Now we need to check whether the name we got back for this type matches the extra specifications
3522     // that were in the name we're looking up:
3523     if (base_name_start != partial_name || *base_name_end != '\0')
3524     {
3525         // First see if the stuff to the left matches the full name.  To do that let's see if
3526         // we can pull out the mips linkage name attribute:
3527
3528         Mangled best_name;
3529         DWARFDebugInfoEntry::Attributes attributes;
3530         DWARFFormValue form_value;
3531         die->GetAttributes(this, dwarf_cu, NULL, attributes);
3532         uint32_t idx = attributes.FindAttributeIndex(DW_AT_MIPS_linkage_name);
3533         if (idx == UINT32_MAX)
3534             idx = attributes.FindAttributeIndex(DW_AT_linkage_name);
3535         if (idx != UINT32_MAX)
3536         {
3537             if (attributes.ExtractFormValueAtIndex(this, idx, form_value))
3538             {
3539                 const char *mangled_name = form_value.AsCString(&get_debug_str_data());
3540                 if (mangled_name)
3541                     best_name.SetValue (ConstString(mangled_name), true);
3542             }
3543         }
3544
3545         if (!best_name)
3546         {
3547             idx = attributes.FindAttributeIndex(DW_AT_name);
3548             if (idx != UINT32_MAX && attributes.ExtractFormValueAtIndex(this, idx, form_value))
3549             {
3550                 const char *name = form_value.AsCString(&get_debug_str_data());
3551                 best_name.SetValue (ConstString(name), false);
3552             }
3553         }
3554
3555         if (best_name.GetDemangledName())
3556         {
3557             const char *demangled = best_name.GetDemangledName().GetCString();
3558             if (demangled)
3559             {
3560                 std::string name_no_parens(partial_name, base_name_end - partial_name);
3561                 const char *partial_in_demangled = strstr (demangled, name_no_parens.c_str());
3562                 if (partial_in_demangled == NULL)
3563                     return false;
3564                 else
3565                 {
3566                     // Sort out the case where our name is something like "Process::Destroy" and the match is
3567                     // "SBProcess::Destroy" - that shouldn't be a match.  We should really always match on
3568                     // namespace boundaries...
3569
3570                     if (partial_name[0] == ':'  && partial_name[1] == ':')
3571                     {
3572                         // The partial name was already on a namespace boundary so all matches are good.
3573                         return true;
3574                     }
3575                     else if (partial_in_demangled == demangled)
3576                     {
3577                         // They both start the same, so this is an good match.
3578                         return true;
3579                     }
3580                     else
3581                     {
3582                         if (partial_in_demangled - demangled == 1)
3583                         {
3584                             // Only one character difference, can't be a namespace boundary...
3585                             return false;
3586                         }
3587                         else if (*(partial_in_demangled - 1) == ':' && *(partial_in_demangled - 2) == ':')
3588                         {
3589                             // We are on a namespace boundary, so this is also good.
3590                             return true;
3591                         }
3592                         else
3593                             return false;
3594                     }
3595                 }
3596             }
3597         }
3598     }
3599
3600     return true;
3601 }
3602
3603 uint32_t
3604 SymbolFileDWARF::FindFunctions (const ConstString &name,
3605                                 const lldb_private::ClangNamespaceDecl *namespace_decl,
3606                                 uint32_t name_type_mask,
3607                                 bool include_inlines,
3608                                 bool append,
3609                                 SymbolContextList& sc_list)
3610 {
3611     Timer scoped_timer (__PRETTY_FUNCTION__,
3612                         "SymbolFileDWARF::FindFunctions (name = '%s')",
3613                         name.AsCString());
3614
3615     // eFunctionNameTypeAuto should be pre-resolved by a call to Module::PrepareForFunctionNameLookup()
3616     assert ((name_type_mask & eFunctionNameTypeAuto) == 0);
3617
3618     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3619
3620     if (log)
3621     {
3622         GetObjectFile()->GetModule()->LogMessage (log,
3623                                                   "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list)",
3624                                                   name.GetCString(),
3625                                                   name_type_mask,
3626                                                   append);
3627     }
3628
3629     // If we aren't appending the results to this list, then clear the list
3630     if (!append)
3631         sc_list.Clear();
3632
3633     if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
3634         return 0;
3635
3636     // If name is empty then we won't find anything.
3637     if (name.IsEmpty())
3638         return 0;
3639
3640     // Remember how many sc_list are in the list before we search in case
3641     // we are appending the results to a variable list.
3642
3643     const char *name_cstr = name.GetCString();
3644
3645     const uint32_t original_size = sc_list.GetSize();
3646
3647     DWARFDebugInfo* info = DebugInfo();
3648     if (info == NULL)
3649         return 0;
3650
3651     DWARFCompileUnit *dwarf_cu = NULL;
3652     std::set<const DWARFDebugInfoEntry *> resolved_dies;
3653     if (m_using_apple_tables)
3654     {
3655         if (m_apple_names_ap.get())
3656         {
3657
3658             DIEArray die_offsets;
3659
3660             uint32_t num_matches = 0;
3661
3662             if (name_type_mask & eFunctionNameTypeFull)
3663             {
3664                 // If they asked for the full name, match what they typed.  At some point we may
3665                 // want to canonicalize this (strip double spaces, etc.  For now, we just add all the
3666                 // dies that we find by exact match.
3667                 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
3668                 for (uint32_t i = 0; i < num_matches; i++)
3669                 {
3670                     const dw_offset_t die_offset = die_offsets[i];
3671                     const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3672                     if (die)
3673                     {
3674                         if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3675                             continue;
3676
3677                         if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3678                             continue;
3679
3680                         if (resolved_dies.find(die) == resolved_dies.end())
3681                         {
3682                             if (ResolveFunction (dwarf_cu, die, sc_list))
3683                                 resolved_dies.insert(die);
3684                         }
3685                     }
3686                     else
3687                     {
3688                         GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3689                                                                                    die_offset, name_cstr);
3690                     }
3691                 }
3692             }
3693
3694             if (name_type_mask & eFunctionNameTypeSelector)
3695             {
3696                 if (namespace_decl && *namespace_decl)
3697                     return 0; // no selectors in namespaces
3698
3699                 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
3700                 // Now make sure these are actually ObjC methods.  In this case we can simply look up the name,
3701                 // and if it is an ObjC method name, we're good.
3702
3703                 for (uint32_t i = 0; i < num_matches; i++)
3704                 {
3705                     const dw_offset_t die_offset = die_offsets[i];
3706                     const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3707                     if (die)
3708                     {
3709                         const char *die_name = die->GetName(this, dwarf_cu);
3710                         if (ObjCLanguageRuntime::IsPossibleObjCMethodName(die_name))
3711                         {
3712                             if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3713                                 continue;
3714
3715                             if (resolved_dies.find(die) == resolved_dies.end())
3716                             {
3717                                 if (ResolveFunction (dwarf_cu, die, sc_list))
3718                                     resolved_dies.insert(die);
3719                             }
3720                         }
3721                     }
3722                     else
3723                     {
3724                         GetObjectFile()->GetModule()->ReportError ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3725                                                                    die_offset, name_cstr);
3726                     }
3727                 }
3728                 die_offsets.clear();
3729             }
3730
3731             if (((name_type_mask & eFunctionNameTypeMethod) && !namespace_decl) || name_type_mask & eFunctionNameTypeBase)
3732             {
3733                 // The apple_names table stores just the "base name" of C++ methods in the table.  So we have to
3734                 // extract the base name, look that up, and if there is any other information in the name we were
3735                 // passed in we have to post-filter based on that.
3736
3737                 // FIXME: Arrange the logic above so that we don't calculate the base name twice:
3738                 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
3739
3740                 for (uint32_t i = 0; i < num_matches; i++)
3741                 {
3742                     const dw_offset_t die_offset = die_offsets[i];
3743                     const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3744                     if (die)
3745                     {
3746                         if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3747                             continue;
3748
3749                         if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3750                             continue;
3751
3752                         // If we get to here, the die is good, and we should add it:
3753                         if (resolved_dies.find(die) == resolved_dies.end())
3754                         if (ResolveFunction (dwarf_cu, die, sc_list))
3755                         {
3756                             bool keep_die = true;
3757                             if ((name_type_mask & (eFunctionNameTypeBase|eFunctionNameTypeMethod)) != (eFunctionNameTypeBase|eFunctionNameTypeMethod))
3758                             {
3759                                 // We are looking for either basenames or methods, so we need to
3760                                 // trim out the ones we won't want by looking at the type
3761                                 SymbolContext sc;
3762                                 if (sc_list.GetLastContext(sc))
3763                                 {
3764                                     if (sc.block)
3765                                     {
3766                                         // We have an inlined function
3767                                     }
3768                                     else if (sc.function)
3769                                     {
3770                                         Type *type = sc.function->GetType();
3771
3772                                         if (type)
3773                                         {
3774                                             clang::DeclContext* decl_ctx = GetClangDeclContextContainingTypeUID (type->GetID());
3775                                             if (decl_ctx->isRecord())
3776                                             {
3777                                                 if (name_type_mask & eFunctionNameTypeBase)
3778                                                 {
3779                                                     sc_list.RemoveContextAtIndex(sc_list.GetSize()-1);
3780                                                     keep_die = false;
3781                                                 }
3782                                             }
3783                                             else
3784                                             {
3785                                                 if (name_type_mask & eFunctionNameTypeMethod)
3786                                                 {
3787                                                     sc_list.RemoveContextAtIndex(sc_list.GetSize()-1);
3788                                                     keep_die = false;
3789                                                 }
3790                                             }
3791                                         }
3792                                         else
3793                                         {
3794                                             GetObjectFile()->GetModule()->ReportWarning ("function at die offset 0x%8.8x had no function type",
3795                                                                                          die_offset);
3796                                         }
3797                                     }
3798                                 }
3799                             }
3800                             if (keep_die)
3801                                 resolved_dies.insert(die);
3802                         }
3803                     }
3804                     else
3805                     {
3806                         GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3807                                                                                    die_offset, name_cstr);
3808                     }
3809                 }
3810                 die_offsets.clear();
3811             }
3812         }
3813     }
3814     else
3815     {
3816
3817         // Index the DWARF if we haven't already
3818         if (!m_indexed)
3819             Index ();
3820
3821         if (name_type_mask & eFunctionNameTypeFull)
3822         {
3823             FindFunctions (name, m_function_fullname_index, sc_list);
3824
3825             // FIXME Temporary workaround for global/anonymous namespace
3826             // functions on FreeBSD and Linux
3827 #if defined (__FreeBSD__) || defined (__linux__)
3828             // If we didn't find any functions in the global namespace try
3829             // looking in the basename index but ignore any returned
3830             // functions that have a namespace (ie. mangled names starting with
3831             // '_ZN') but keep functions which have an anonymous namespace
3832             if (sc_list.GetSize() == 0)
3833             {
3834                 SymbolContextList temp_sc_list;
3835                 FindFunctions (name, m_function_basename_index, temp_sc_list);
3836                 if (!namespace_decl)
3837                 {
3838                     SymbolContext sc;
3839                     for (uint32_t i = 0; i < temp_sc_list.GetSize(); i++)
3840                     {
3841                         if (temp_sc_list.GetContextAtIndex(i, sc))
3842                         {
3843                             ConstString mangled_name = sc.GetFunctionName(Mangled::ePreferMangled);
3844                             ConstString demangled_name = sc.GetFunctionName(Mangled::ePreferDemangled);
3845                             if (strncmp(mangled_name.GetCString(), "_ZN", 3) ||
3846                                 !strncmp(demangled_name.GetCString(), "(anonymous namespace)", 21))
3847                             {
3848                                 sc_list.Append(sc);
3849                             }
3850                         }
3851                     }
3852                 }
3853             }
3854 #endif
3855         }
3856         DIEArray die_offsets;
3857         DWARFCompileUnit *dwarf_cu = NULL;
3858
3859         if (name_type_mask & eFunctionNameTypeBase)
3860         {
3861             uint32_t num_base = m_function_basename_index.Find(name, die_offsets);
3862             for (uint32_t i = 0; i < num_base; i++)
3863             {
3864                 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu);
3865                 if (die)
3866                 {
3867                     if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3868                         continue;
3869
3870                     if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3871                         continue;
3872
3873                     // If we get to here, the die is good, and we should add it:
3874                     if (resolved_dies.find(die) == resolved_dies.end())
3875                     {
3876                         if (ResolveFunction (dwarf_cu, die, sc_list))
3877                             resolved_dies.insert(die);
3878                     }
3879                 }
3880             }
3881             die_offsets.clear();
3882         }
3883
3884         if (name_type_mask & eFunctionNameTypeMethod)
3885         {
3886             if (namespace_decl && *namespace_decl)
3887                 return 0; // no methods in namespaces
3888
3889             uint32_t num_base = m_function_method_index.Find(name, die_offsets);
3890             {
3891                 for (uint32_t i = 0; i < num_base; i++)
3892                 {
3893                     const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu);
3894                     if (die)
3895                     {
3896                         if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3897                             continue;
3898
3899                         // If we get to here, the die is good, and we should add it:
3900                         if (resolved_dies.find(die) == resolved_dies.end())
3901                         {
3902                             if (ResolveFunction (dwarf_cu, die, sc_list))
3903                                 resolved_dies.insert(die);
3904                         }
3905                     }
3906                 }
3907             }
3908             die_offsets.clear();
3909         }
3910
3911         if ((name_type_mask & eFunctionNameTypeSelector) && (!namespace_decl || !*namespace_decl))
3912         {
3913             FindFunctions (name, m_function_selector_index, sc_list);
3914         }
3915
3916     }
3917
3918     // Return the number of variable that were appended to the list
3919     const uint32_t num_matches = sc_list.GetSize() - original_size;
3920
3921     if (log && num_matches > 0)
3922     {
3923         GetObjectFile()->GetModule()->LogMessage (log,
3924                                                   "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list) => %u",
3925                                                   name.GetCString(),
3926                                                   name_type_mask,
3927                                                   append,
3928                                                   num_matches);
3929     }
3930     return num_matches;
3931 }
3932
3933 uint32_t
3934 SymbolFileDWARF::FindFunctions(const RegularExpression& regex, bool include_inlines, bool append, SymbolContextList& sc_list)
3935 {
3936     Timer scoped_timer (__PRETTY_FUNCTION__,
3937                         "SymbolFileDWARF::FindFunctions (regex = '%s')",
3938                         regex.GetText());
3939
3940     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3941
3942     if (log)
3943     {
3944         GetObjectFile()->GetModule()->LogMessage (log,
3945                                                   "SymbolFileDWARF::FindFunctions (regex=\"%s\", append=%u, sc_list)",
3946                                                   regex.GetText(),
3947                                                   append);
3948     }
3949
3950
3951     // If we aren't appending the results to this list, then clear the list
3952     if (!append)
3953         sc_list.Clear();
3954
3955     // Remember how many sc_list are in the list before we search in case
3956     // we are appending the results to a variable list.
3957     uint32_t original_size = sc_list.GetSize();
3958
3959     if (m_using_apple_tables)
3960     {
3961         if (m_apple_names_ap.get())
3962             FindFunctions (regex, *m_apple_names_ap, sc_list);
3963     }
3964     else
3965     {
3966         // Index the DWARF if we haven't already
3967         if (!m_indexed)
3968             Index ();
3969
3970         FindFunctions (regex, m_function_basename_index, sc_list);
3971
3972         FindFunctions (regex, m_function_fullname_index, sc_list);
3973     }
3974
3975     // Return the number of variable that were appended to the list
3976     return sc_list.GetSize() - original_size;
3977 }
3978
3979 uint32_t
3980 SymbolFileDWARF::FindTypes (const SymbolContext& sc,
3981                             const ConstString &name,
3982                             const lldb_private::ClangNamespaceDecl *namespace_decl,
3983                             bool append,
3984                             uint32_t max_matches,
3985                             TypeList& types)
3986 {
3987     DWARFDebugInfo* info = DebugInfo();
3988     if (info == NULL)
3989         return 0;
3990
3991     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3992
3993     if (log)
3994     {
3995         if (namespace_decl)
3996             GetObjectFile()->GetModule()->LogMessage (log,
3997                                                       "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list)",
3998                                                       name.GetCString(),
3999                                                       static_cast<void*>(namespace_decl->GetNamespaceDecl()),
4000                                                       namespace_decl->GetQualifiedName().c_str(),
4001                                                       append, max_matches);
4002         else
4003             GetObjectFile()->GetModule()->LogMessage (log,
4004                                                       "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list)",
4005                                                       name.GetCString(), append,
4006                                                       max_matches);
4007     }
4008
4009     // If we aren't appending the results to this list, then clear the list
4010     if (!append)
4011         types.Clear();
4012
4013     if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
4014         return 0;
4015
4016     DIEArray die_offsets;
4017
4018     if (m_using_apple_tables)
4019     {
4020         if (m_apple_types_ap.get())
4021         {
4022             const char *name_cstr = name.GetCString();
4023             m_apple_types_ap->FindByName (name_cstr, die_offsets);
4024         }
4025     }
4026     else
4027     {
4028         if (!m_indexed)
4029             Index ();
4030
4031         m_type_index.Find (name, die_offsets);
4032     }
4033
4034     const size_t num_die_matches = die_offsets.size();
4035
4036     if (num_die_matches)
4037     {
4038         const uint32_t initial_types_size = types.GetSize();
4039         DWARFCompileUnit* dwarf_cu = NULL;
4040         const DWARFDebugInfoEntry* die = NULL;
4041         DWARFDebugInfo* debug_info = DebugInfo();
4042         for (size_t i=0; i<num_die_matches; ++i)
4043         {
4044             const dw_offset_t die_offset = die_offsets[i];
4045             die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
4046
4047             if (die)
4048             {
4049                 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
4050                     continue;
4051
4052                 Type *matching_type = ResolveType (dwarf_cu, die);
4053                 if (matching_type)
4054                 {
4055                     // We found a type pointer, now find the shared pointer form our type list
4056                     types.InsertUnique (matching_type->shared_from_this());
4057                     if (types.GetSize() >= max_matches)
4058                         break;
4059                 }
4060             }
4061             else
4062             {
4063                 if (m_using_apple_tables)
4064                 {
4065                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
4066                                                                                die_offset, name.GetCString());
4067                 }
4068             }
4069
4070         }
4071         const uint32_t num_matches = types.GetSize() - initial_types_size;
4072         if (log && num_matches)
4073         {
4074             if (namespace_decl)
4075             {
4076                 GetObjectFile()->GetModule()->LogMessage (log,
4077                                                           "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list) => %u",
4078                                                           name.GetCString(),
4079                                                           static_cast<void*>(namespace_decl->GetNamespaceDecl()),
4080                                                           namespace_decl->GetQualifiedName().c_str(),
4081                                                           append, max_matches,
4082                                                           num_matches);
4083             }
4084             else
4085             {
4086                 GetObjectFile()->GetModule()->LogMessage (log,
4087                                                           "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list) => %u",
4088                                                           name.GetCString(),
4089                                                           append, max_matches,
4090                                                           num_matches);
4091             }
4092         }
4093         return num_matches;
4094     }
4095     return 0;
4096 }
4097
4098
4099 ClangNamespaceDecl
4100 SymbolFileDWARF::FindNamespace (const SymbolContext& sc,
4101                                 const ConstString &name,
4102                                 const lldb_private::ClangNamespaceDecl *parent_namespace_decl)
4103 {
4104     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
4105
4106     if (log)
4107     {
4108         GetObjectFile()->GetModule()->LogMessage (log,
4109                                                   "SymbolFileDWARF::FindNamespace (sc, name=\"%s\")",
4110                                                   name.GetCString());
4111     }
4112
4113     if (!NamespaceDeclMatchesThisSymbolFile(parent_namespace_decl))
4114         return ClangNamespaceDecl();
4115
4116     ClangNamespaceDecl namespace_decl;
4117     DWARFDebugInfo* info = DebugInfo();
4118     if (info)
4119     {
4120         DIEArray die_offsets;
4121
4122         // Index if we already haven't to make sure the compile units
4123         // get indexed and make their global DIE index list
4124         if (m_using_apple_tables)
4125         {
4126             if (m_apple_namespaces_ap.get())
4127             {
4128                 const char *name_cstr = name.GetCString();
4129                 m_apple_namespaces_ap->FindByName (name_cstr, die_offsets);
4130             }
4131         }
4132         else
4133         {
4134             if (!m_indexed)
4135                 Index ();
4136
4137             m_namespace_index.Find (name, die_offsets);
4138         }
4139
4140         DWARFCompileUnit* dwarf_cu = NULL;
4141         const DWARFDebugInfoEntry* die = NULL;
4142         const size_t num_matches = die_offsets.size();
4143         if (num_matches)
4144         {
4145             DWARFDebugInfo* debug_info = DebugInfo();
4146             for (size_t i=0; i<num_matches; ++i)
4147             {
4148                 const dw_offset_t die_offset = die_offsets[i];
4149                 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
4150
4151                 if (die)
4152                 {
4153                     if (parent_namespace_decl && !DIEIsInNamespace (parent_namespace_decl, dwarf_cu, die))
4154                         continue;
4155
4156                     clang::NamespaceDecl *clang_namespace_decl = ResolveNamespaceDIE (dwarf_cu, die);
4157                     if (clang_namespace_decl)
4158                     {
4159                         namespace_decl.SetASTContext (GetClangASTContext().getASTContext());
4160                         namespace_decl.SetNamespaceDecl (clang_namespace_decl);
4161                         break;
4162                     }
4163                 }
4164                 else
4165                 {
4166                     if (m_using_apple_tables)
4167                     {
4168                         GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_namespaces accelerator table had bad die 0x%8.8x for '%s')\n",
4169                                                                    die_offset, name.GetCString());
4170                     }
4171                 }
4172
4173             }
4174         }
4175     }
4176     if (log && namespace_decl.GetNamespaceDecl())
4177     {
4178         GetObjectFile()->GetModule()->LogMessage (log,
4179                                                   "SymbolFileDWARF::FindNamespace (sc, name=\"%s\") => clang::NamespaceDecl(%p) \"%s\"",
4180                                                   name.GetCString(),
4181                                                   static_cast<const void*>(namespace_decl.GetNamespaceDecl()),
4182                                                   namespace_decl.GetQualifiedName().c_str());
4183     }
4184
4185     return namespace_decl;
4186 }
4187
4188 uint32_t
4189 SymbolFileDWARF::FindTypes(std::vector<dw_offset_t> die_offsets, uint32_t max_matches, TypeList& types)
4190 {
4191     // Remember how many sc_list are in the list before we search in case
4192     // we are appending the results to a variable list.
4193     uint32_t original_size = types.GetSize();
4194
4195     const uint32_t num_die_offsets = die_offsets.size();
4196     // Parse all of the types we found from the pubtypes matches
4197     uint32_t i;
4198     uint32_t num_matches = 0;
4199     for (i = 0; i < num_die_offsets; ++i)
4200     {
4201         Type *matching_type = ResolveTypeUID (die_offsets[i]);
4202         if (matching_type)
4203         {
4204             // We found a type pointer, now find the shared pointer form our type list
4205             types.InsertUnique (matching_type->shared_from_this());
4206             ++num_matches;
4207             if (num_matches >= max_matches)
4208                 break;
4209         }
4210     }
4211
4212     // Return the number of variable that were appended to the list
4213     return types.GetSize() - original_size;
4214 }
4215
4216
4217 size_t
4218 SymbolFileDWARF::ParseChildParameters (const SymbolContext& sc,
4219                                        clang::DeclContext *containing_decl_ctx,
4220                                        DWARFCompileUnit* dwarf_cu,
4221                                        const DWARFDebugInfoEntry *parent_die,
4222                                        bool skip_artificial,
4223                                        bool &is_static,
4224                                        bool &is_variadic,
4225                                        TypeList* type_list,
4226                                        std::vector<ClangASTType>& function_param_types,
4227                                        std::vector<clang::ParmVarDecl*>& function_param_decls,
4228                                        unsigned &type_quals) // ,
4229                                        // ClangASTContext::TemplateParameterInfos &template_param_infos))
4230 {
4231     if (parent_die == NULL)
4232         return 0;
4233
4234     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
4235
4236     size_t arg_idx = 0;
4237     const DWARFDebugInfoEntry *die;
4238     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
4239     {
4240         dw_tag_t tag = die->Tag();
4241         switch (tag)
4242         {
4243         case DW_TAG_formal_parameter:
4244             {
4245                 DWARFDebugInfoEntry::Attributes attributes;
4246                 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
4247                 if (num_attributes > 0)
4248                 {
4249                     const char *name = NULL;
4250                     Declaration decl;
4251                     dw_offset_t param_type_die_offset = DW_INVALID_OFFSET;
4252                     bool is_artificial = false;
4253                     // one of None, Auto, Register, Extern, Static, PrivateExtern
4254
4255                     clang::StorageClass storage = clang::SC_None;
4256                     uint32_t i;
4257                     for (i=0; i<num_attributes; ++i)
4258                     {
4259                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
4260                         DWARFFormValue form_value;
4261                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
4262                         {
4263                             switch (attr)
4264                             {
4265                             case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
4266                             case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
4267                             case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
4268                             case DW_AT_name:        name = form_value.AsCString(&get_debug_str_data()); break;
4269                             case DW_AT_type:        param_type_die_offset = form_value.Reference(dwarf_cu); break;
4270                             case DW_AT_artificial:  is_artificial = form_value.Boolean(); break;
4271                             case DW_AT_location:
4272     //                          if (form_value.BlockData())
4273     //                          {
4274     //                              const DWARFDataExtractor& debug_info_data = debug_info();
4275     //                              uint32_t block_length = form_value.Unsigned();
4276     //                              DWARFDataExtractor location(debug_info_data, form_value.BlockData() - debug_info_data.GetDataStart(), block_length);
4277     //                          }
4278     //                          else
4279     //                          {
4280     //                          }
4281     //                          break;
4282                             case DW_AT_const_value:
4283                             case DW_AT_default_value:
4284                             case DW_AT_description:
4285                             case DW_AT_endianity:
4286                             case DW_AT_is_optional:
4287                             case DW_AT_segment:
4288                             case DW_AT_variable_parameter:
4289                             default:
4290                             case DW_AT_abstract_origin:
4291                             case DW_AT_sibling:
4292                                 break;
4293                             }
4294                         }
4295                     }
4296
4297                     bool skip = false;
4298                     if (skip_artificial)
4299                     {
4300                         if (is_artificial)
4301                         {
4302                             // In order to determine if a C++ member function is
4303                             // "const" we have to look at the const-ness of "this"...
4304                             // Ugly, but that
4305                             if (arg_idx == 0)
4306                             {
4307                                 if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind()))
4308                                 {
4309                                     // Often times compilers omit the "this" name for the
4310                                     // specification DIEs, so we can't rely upon the name
4311                                     // being in the formal parameter DIE...
4312                                     if (name == NULL || ::strcmp(name, "this")==0)
4313                                     {
4314                                         Type *this_type = ResolveTypeUID (param_type_die_offset);
4315                                         if (this_type)
4316                                         {
4317                                             uint32_t encoding_mask = this_type->GetEncodingMask();
4318                                             if (encoding_mask & Type::eEncodingIsPointerUID)
4319                                             {
4320                                                 is_static = false;
4321
4322                                                 if (encoding_mask & (1u << Type::eEncodingIsConstUID))
4323                                                     type_quals |= clang::Qualifiers::Const;
4324                                                 if (encoding_mask & (1u << Type::eEncodingIsVolatileUID))
4325                                                     type_quals |= clang::Qualifiers::Volatile;
4326                                             }
4327                                         }
4328                                     }
4329                                 }
4330                             }
4331                             skip = true;
4332                         }
4333                         else
4334                         {
4335
4336                             // HACK: Objective C formal parameters "self" and "_cmd"
4337                             // are not marked as artificial in the DWARF...
4338                             CompileUnit *comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
4339                             if (comp_unit)
4340                             {
4341                                 switch (comp_unit->GetLanguage())
4342                                 {
4343                                     case eLanguageTypeObjC:
4344                                     case eLanguageTypeObjC_plus_plus:
4345                                         if (name && name[0] && (strcmp (name, "self") == 0 || strcmp (name, "_cmd") == 0))
4346                                             skip = true;
4347                                         break;
4348                                     default:
4349                                         break;
4350                                 }
4351                             }
4352                         }
4353                     }
4354
4355                     if (!skip)
4356                     {
4357                         Type *type = ResolveTypeUID(param_type_die_offset);
4358                         if (type)
4359                         {
4360                             function_param_types.push_back (type->GetClangForwardType());
4361
4362                             clang::ParmVarDecl *param_var_decl = GetClangASTContext().CreateParameterDeclaration (name,
4363                                                                                                                   type->GetClangForwardType(),
4364                                                                                                                   storage);
4365                             assert(param_var_decl);
4366                             function_param_decls.push_back(param_var_decl);
4367
4368                             GetClangASTContext().SetMetadataAsUserID (param_var_decl, MakeUserID(die->GetOffset()));
4369                         }
4370                     }
4371                 }
4372                 arg_idx++;
4373             }
4374             break;
4375
4376         case DW_TAG_unspecified_parameters:
4377             is_variadic = true;
4378             break;
4379
4380         case DW_TAG_template_type_parameter:
4381         case DW_TAG_template_value_parameter:
4382             // The one caller of this was never using the template_param_infos,
4383             // and the local variable was taking up a large amount of stack space
4384             // in SymbolFileDWARF::ParseType() so this was removed. If we ever need
4385             // the template params back, we can add them back.
4386             // ParseTemplateDIE (dwarf_cu, die, template_param_infos);
4387             break;
4388
4389         default:
4390             break;
4391         }
4392     }
4393     return arg_idx;
4394 }
4395
4396 size_t
4397 SymbolFileDWARF::ParseChildEnumerators
4398 (
4399     const SymbolContext& sc,
4400     lldb_private::ClangASTType &clang_type,
4401     bool is_signed,
4402     uint32_t enumerator_byte_size,
4403     DWARFCompileUnit* dwarf_cu,
4404     const DWARFDebugInfoEntry *parent_die
4405 )
4406 {
4407     if (parent_die == NULL)
4408         return 0;
4409
4410     size_t enumerators_added = 0;
4411     const DWARFDebugInfoEntry *die;
4412     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
4413
4414     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
4415     {
4416         const dw_tag_t tag = die->Tag();
4417         if (tag == DW_TAG_enumerator)
4418         {
4419             DWARFDebugInfoEntry::Attributes attributes;
4420             const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
4421             if (num_child_attributes > 0)
4422             {
4423                 const char *name = NULL;
4424                 bool got_value = false;
4425                 int64_t enum_value = 0;
4426                 Declaration decl;
4427
4428                 uint32_t i;
4429                 for (i=0; i<num_child_attributes; ++i)
4430                 {
4431                     const dw_attr_t attr = attributes.AttributeAtIndex(i);
4432                     DWARFFormValue form_value;
4433                     if (attributes.ExtractFormValueAtIndex(this, i, form_value))
4434                     {
4435                         switch (attr)
4436                         {
4437                         case DW_AT_const_value:
4438                             got_value = true;
4439                             if (is_signed)
4440                                 enum_value = form_value.Signed();
4441                             else
4442                                 enum_value = form_value.Unsigned();
4443                             break;
4444
4445                         case DW_AT_name:
4446                             name = form_value.AsCString(&get_debug_str_data());
4447                             break;
4448
4449                         case DW_AT_description:
4450                         default:
4451                         case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
4452                         case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
4453                         case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
4454                         case DW_AT_sibling:
4455                             break;
4456                         }
4457                     }
4458                 }
4459
4460                 if (name && name[0] && got_value)
4461                 {
4462                     clang_type.AddEnumerationValueToEnumerationType (clang_type.GetEnumerationIntegerType(),
4463                                                                      decl,
4464                                                                      name,
4465                                                                      enum_value,
4466                                                                      enumerator_byte_size * 8);
4467                     ++enumerators_added;
4468                 }
4469             }
4470         }
4471     }
4472     return enumerators_added;
4473 }
4474
4475 void
4476 SymbolFileDWARF::ParseChildArrayInfo
4477 (
4478     const SymbolContext& sc,
4479     DWARFCompileUnit* dwarf_cu,
4480     const DWARFDebugInfoEntry *parent_die,
4481     int64_t& first_index,
4482     std::vector<uint64_t>& element_orders,
4483     uint32_t& byte_stride,
4484     uint32_t& bit_stride
4485 )
4486 {
4487     if (parent_die == NULL)
4488         return;
4489
4490     const DWARFDebugInfoEntry *die;
4491     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
4492     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
4493     {
4494         const dw_tag_t tag = die->Tag();
4495         switch (tag)
4496         {
4497         case DW_TAG_subrange_type:
4498             {
4499                 DWARFDebugInfoEntry::Attributes attributes;
4500                 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
4501                 if (num_child_attributes > 0)
4502                 {
4503                     uint64_t num_elements = 0;
4504                     uint64_t lower_bound = 0;
4505                     uint64_t upper_bound = 0;
4506                     bool upper_bound_valid = false;
4507                     uint32_t i;
4508                     for (i=0; i<num_child_attributes; ++i)
4509                     {
4510                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
4511                         DWARFFormValue form_value;
4512                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
4513                         {
4514                             switch (attr)
4515                             {
4516                             case DW_AT_name:
4517                                 break;
4518
4519                             case DW_AT_count:
4520                                 num_elements = form_value.Unsigned();
4521                                 break;
4522
4523                             case DW_AT_bit_stride:
4524                                 bit_stride = form_value.Unsigned();
4525                                 break;
4526
4527                             case DW_AT_byte_stride:
4528                                 byte_stride = form_value.Unsigned();
4529                                 break;
4530
4531                             case DW_AT_lower_bound:
4532                                 lower_bound = form_value.Unsigned();
4533                                 break;
4534
4535                             case DW_AT_upper_bound:
4536                                 upper_bound_valid = true;
4537                                 upper_bound = form_value.Unsigned();
4538                                 break;
4539
4540                             default:
4541                             case DW_AT_abstract_origin:
4542                             case DW_AT_accessibility:
4543                             case DW_AT_allocated:
4544                             case DW_AT_associated:
4545                             case DW_AT_data_location:
4546                             case DW_AT_declaration:
4547                             case DW_AT_description:
4548                             case DW_AT_sibling:
4549                             case DW_AT_threads_scaled:
4550                             case DW_AT_type:
4551                             case DW_AT_visibility:
4552                                 break;
4553                             }
4554                         }
4555                     }
4556
4557                     if (num_elements == 0)
4558                     {
4559                         if (upper_bound_valid && upper_bound >= lower_bound)
4560                             num_elements = upper_bound - lower_bound + 1;
4561                     }
4562
4563                     element_orders.push_back (num_elements);
4564                 }
4565             }
4566             break;
4567         }
4568     }
4569 }
4570
4571 TypeSP
4572 SymbolFileDWARF::GetTypeForDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry* die)
4573 {
4574     TypeSP type_sp;
4575     if (die != NULL)
4576     {
4577         assert(dwarf_cu != NULL);
4578         Type *type_ptr = m_die_to_type.lookup (die);
4579         if (type_ptr == NULL)
4580         {
4581             CompileUnit* lldb_cu = GetCompUnitForDWARFCompUnit(dwarf_cu);
4582             assert (lldb_cu);
4583             SymbolContext sc(lldb_cu);
4584             type_sp = ParseType(sc, dwarf_cu, die, NULL);
4585         }
4586         else if (type_ptr != DIE_IS_BEING_PARSED)
4587         {
4588             // Grab the existing type from the master types lists
4589             type_sp = type_ptr->shared_from_this();
4590         }
4591
4592     }
4593     return type_sp;
4594 }
4595
4596 clang::DeclContext *
4597 SymbolFileDWARF::GetClangDeclContextContainingDIEOffset (dw_offset_t die_offset)
4598 {
4599     if (die_offset != DW_INVALID_OFFSET)
4600     {
4601         DWARFCompileUnitSP cu_sp;
4602         const DWARFDebugInfoEntry* die = DebugInfo()->GetDIEPtr(die_offset, &cu_sp);
4603         return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL);
4604     }
4605     return NULL;
4606 }
4607
4608 clang::DeclContext *
4609 SymbolFileDWARF::GetClangDeclContextForDIEOffset (const SymbolContext &sc, dw_offset_t die_offset)
4610 {
4611     if (die_offset != DW_INVALID_OFFSET)
4612     {
4613         DWARFDebugInfo* debug_info = DebugInfo();
4614         if (debug_info)
4615         {
4616             DWARFCompileUnitSP cu_sp;
4617             const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(die_offset, &cu_sp);
4618             if (die)
4619                 return GetClangDeclContextForDIE (sc, cu_sp.get(), die);
4620         }
4621     }
4622     return NULL;
4623 }
4624
4625 clang::NamespaceDecl *
4626 SymbolFileDWARF::ResolveNamespaceDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry *die)
4627 {
4628     if (die && die->Tag() == DW_TAG_namespace)
4629     {
4630         // See if we already parsed this namespace DIE and associated it with a
4631         // uniqued namespace declaration
4632         clang::NamespaceDecl *namespace_decl = static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die]);
4633         if (namespace_decl)
4634             return namespace_decl;
4635         else
4636         {
4637             const char *namespace_name = die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL);
4638             clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, NULL);
4639             namespace_decl = GetClangASTContext().GetUniqueNamespaceDeclaration (namespace_name, containing_decl_ctx);
4640             Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
4641             if (log)
4642             {
4643                 if (namespace_name)
4644                 {
4645                     GetObjectFile()->GetModule()->LogMessage (log,
4646                                                               "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace with DW_AT_name(\"%s\") => clang::NamespaceDecl *%p (original = %p)",
4647                                                               static_cast<void*>(GetClangASTContext().getASTContext()),
4648                                                               MakeUserID(die->GetOffset()),
4649                                                               namespace_name,
4650                                                               static_cast<void*>(namespace_decl),
4651                                                               static_cast<void*>(namespace_decl->getOriginalNamespace()));
4652                 }
4653                 else
4654                 {
4655                     GetObjectFile()->GetModule()->LogMessage (log,
4656                                                               "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p (original = %p)",
4657                                                               static_cast<void*>(GetClangASTContext().getASTContext()),
4658                                                               MakeUserID(die->GetOffset()),
4659                                                               static_cast<void*>(namespace_decl),
4660                                                               static_cast<void*>(namespace_decl->getOriginalNamespace()));
4661                 }
4662             }
4663
4664             if (namespace_decl)
4665                 LinkDeclContextToDIE((clang::DeclContext*)namespace_decl, die);
4666             return namespace_decl;
4667         }
4668     }
4669     return NULL;
4670 }
4671
4672 clang::DeclContext *
4673 SymbolFileDWARF::GetClangDeclContextForDIE (const SymbolContext &sc, DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
4674 {
4675     clang::DeclContext *clang_decl_ctx = GetCachedClangDeclContextForDIE (die);
4676     if (clang_decl_ctx)
4677         return clang_decl_ctx;
4678     // If this DIE has a specification, or an abstract origin, then trace to those.
4679
4680     dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET);
4681     if (die_offset != DW_INVALID_OFFSET)
4682         return GetClangDeclContextForDIEOffset (sc, die_offset);
4683
4684     die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET);
4685     if (die_offset != DW_INVALID_OFFSET)
4686         return GetClangDeclContextForDIEOffset (sc, die_offset);
4687
4688     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
4689     if (log)
4690         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));
4691     // This is the DIE we want.  Parse it, then query our map.
4692     bool assert_not_being_parsed = true;
4693     ResolveTypeUID (cu, die, assert_not_being_parsed);
4694
4695     clang_decl_ctx = GetCachedClangDeclContextForDIE (die);
4696
4697     return clang_decl_ctx;
4698 }
4699
4700 clang::DeclContext *
4701 SymbolFileDWARF::GetClangDeclContextContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die, const DWARFDebugInfoEntry **decl_ctx_die_copy)
4702 {
4703     if (m_clang_tu_decl == NULL)
4704         m_clang_tu_decl = GetClangASTContext().getASTContext()->getTranslationUnitDecl();
4705
4706     const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die);
4707
4708     if (decl_ctx_die_copy)
4709         *decl_ctx_die_copy = decl_ctx_die;
4710
4711     if (decl_ctx_die)
4712     {
4713
4714         DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find (decl_ctx_die);
4715         if (pos != m_die_to_decl_ctx.end())
4716             return pos->second;
4717
4718         switch (decl_ctx_die->Tag())
4719         {
4720         case DW_TAG_compile_unit:
4721             return m_clang_tu_decl;
4722
4723         case DW_TAG_namespace:
4724             return ResolveNamespaceDIE (cu, decl_ctx_die);
4725             break;
4726
4727         case DW_TAG_structure_type:
4728         case DW_TAG_union_type:
4729         case DW_TAG_class_type:
4730             {
4731                 Type* type = ResolveType (cu, decl_ctx_die);
4732                 if (type)
4733                 {
4734                     clang::DeclContext *decl_ctx = type->GetClangForwardType().GetDeclContextForType ();
4735                     if (decl_ctx)
4736                     {
4737                         LinkDeclContextToDIE (decl_ctx, decl_ctx_die);
4738                         if (decl_ctx)
4739                             return decl_ctx;
4740                     }
4741                 }
4742             }
4743             break;
4744
4745         default:
4746             break;
4747         }
4748     }
4749     return m_clang_tu_decl;
4750 }
4751
4752
4753 const DWARFDebugInfoEntry *
4754 SymbolFileDWARF::GetDeclContextDIEContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
4755 {
4756     if (cu && die)
4757     {
4758         const DWARFDebugInfoEntry * const decl_die = die;
4759
4760         while (die != NULL)
4761         {
4762             // If this is the original DIE that we are searching for a declaration
4763             // for, then don't look in the cache as we don't want our own decl
4764             // context to be our decl context...
4765             if (decl_die != die)
4766             {
4767                 switch (die->Tag())
4768                 {
4769                     case DW_TAG_compile_unit:
4770                     case DW_TAG_namespace:
4771                     case DW_TAG_structure_type:
4772                     case DW_TAG_union_type:
4773                     case DW_TAG_class_type:
4774                         return die;
4775
4776                     default:
4777                         break;
4778                 }
4779             }
4780
4781             dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET);
4782             if (die_offset != DW_INVALID_OFFSET)
4783             {
4784                 DWARFCompileUnit *spec_cu = cu;
4785                 const DWARFDebugInfoEntry *spec_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &spec_cu);
4786                 const DWARFDebugInfoEntry *spec_die_decl_ctx_die = GetDeclContextDIEContainingDIE (spec_cu, spec_die);
4787                 if (spec_die_decl_ctx_die)
4788                     return spec_die_decl_ctx_die;
4789             }
4790
4791             die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET);
4792             if (die_offset != DW_INVALID_OFFSET)
4793             {
4794                 DWARFCompileUnit *abs_cu = cu;
4795                 const DWARFDebugInfoEntry *abs_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &abs_cu);
4796                 const DWARFDebugInfoEntry *abs_die_decl_ctx_die = GetDeclContextDIEContainingDIE (abs_cu, abs_die);
4797                 if (abs_die_decl_ctx_die)
4798                     return abs_die_decl_ctx_die;
4799             }
4800
4801             die = die->GetParent();
4802         }
4803     }
4804     return NULL;
4805 }
4806
4807
4808 Symbol *
4809 SymbolFileDWARF::GetObjCClassSymbol (const ConstString &objc_class_name)
4810 {
4811     Symbol *objc_class_symbol = NULL;
4812     if (m_obj_file)
4813     {
4814         Symtab *symtab = m_obj_file->GetSymtab ();
4815         if (symtab)
4816         {
4817             objc_class_symbol = symtab->FindFirstSymbolWithNameAndType (objc_class_name,
4818                                                                         eSymbolTypeObjCClass,
4819                                                                         Symtab::eDebugNo,
4820                                                                         Symtab::eVisibilityAny);
4821         }
4822     }
4823     return objc_class_symbol;
4824 }
4825
4826 // Some compilers don't emit the DW_AT_APPLE_objc_complete_type attribute. If they don't
4827 // then we can end up looking through all class types for a complete type and never find
4828 // the full definition. We need to know if this attribute is supported, so we determine
4829 // this here and cache th result. We also need to worry about the debug map DWARF file
4830 // if we are doing darwin DWARF in .o file debugging.
4831 bool
4832 SymbolFileDWARF::Supports_DW_AT_APPLE_objc_complete_type (DWARFCompileUnit *cu)
4833 {
4834     if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate)
4835     {
4836         m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo;
4837         if (cu && cu->Supports_DW_AT_APPLE_objc_complete_type())
4838             m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes;
4839         else
4840         {
4841             DWARFDebugInfo* debug_info = DebugInfo();
4842             const uint32_t num_compile_units = GetNumCompileUnits();
4843             for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx)
4844             {
4845                 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx);
4846                 if (dwarf_cu != cu && dwarf_cu->Supports_DW_AT_APPLE_objc_complete_type())
4847                 {
4848                     m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes;
4849                     break;
4850                 }
4851             }
4852         }
4853         if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolNo && GetDebugMapSymfile ())
4854             return m_debug_map_symfile->Supports_DW_AT_APPLE_objc_complete_type (this);
4855     }
4856     return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes;
4857 }
4858
4859 // This function can be used when a DIE is found that is a forward declaration
4860 // DIE and we want to try and find a type that has the complete definition.
4861 TypeSP
4862 SymbolFileDWARF::FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die,
4863                                                        const ConstString &type_name,
4864                                                        bool must_be_implementation)
4865 {
4866
4867     TypeSP type_sp;
4868
4869     if (!type_name || (must_be_implementation && !GetObjCClassSymbol (type_name)))
4870         return type_sp;
4871
4872     DIEArray die_offsets;
4873
4874     if (m_using_apple_tables)
4875     {
4876         if (m_apple_types_ap.get())
4877         {
4878             const char *name_cstr = type_name.GetCString();
4879             m_apple_types_ap->FindCompleteObjCClassByName (name_cstr, die_offsets, must_be_implementation);
4880         }
4881     }
4882     else
4883     {
4884         if (!m_indexed)
4885             Index ();
4886
4887         m_type_index.Find (type_name, die_offsets);
4888     }
4889
4890     const size_t num_matches = die_offsets.size();
4891
4892     DWARFCompileUnit* type_cu = NULL;
4893     const DWARFDebugInfoEntry* type_die = NULL;
4894     if (num_matches)
4895     {
4896         DWARFDebugInfo* debug_info = DebugInfo();
4897         for (size_t i=0; i<num_matches; ++i)
4898         {
4899             const dw_offset_t die_offset = die_offsets[i];
4900             type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
4901
4902             if (type_die)
4903             {
4904                 bool try_resolving_type = false;
4905
4906                 // Don't try and resolve the DIE we are looking for with the DIE itself!
4907                 if (type_die != die)
4908                 {
4909                     switch (type_die->Tag())
4910                     {
4911                         case DW_TAG_class_type:
4912                         case DW_TAG_structure_type:
4913                             try_resolving_type = true;
4914                             break;
4915                         default:
4916                             break;
4917                     }
4918                 }
4919
4920                 if (try_resolving_type)
4921                 {
4922                     if (must_be_implementation && type_cu->Supports_DW_AT_APPLE_objc_complete_type())
4923                         try_resolving_type = type_die->GetAttributeValueAsUnsigned (this, type_cu, DW_AT_APPLE_objc_complete_type, 0);
4924
4925                     if (try_resolving_type)
4926                     {
4927                         Type *resolved_type = ResolveType (type_cu, type_die, false);
4928                         if (resolved_type && resolved_type != DIE_IS_BEING_PARSED)
4929                         {
4930                             DEBUG_PRINTF ("resolved 0x%8.8" PRIx64 " from %s to 0x%8.8" PRIx64 " (cu 0x%8.8" PRIx64 ")\n",
4931                                           MakeUserID(die->GetOffset()),
4932                                           m_obj_file->GetFileSpec().GetFilename().AsCString(),
4933                                           MakeUserID(type_die->GetOffset()),
4934                                           MakeUserID(type_cu->GetOffset()));
4935
4936                             if (die)
4937                                 m_die_to_type[die] = resolved_type;
4938                             type_sp = resolved_type->shared_from_this();
4939                             break;
4940                         }
4941                     }
4942                 }
4943             }
4944             else
4945             {
4946                 if (m_using_apple_tables)
4947                 {
4948                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
4949                                                                die_offset, type_name.GetCString());
4950                 }
4951             }
4952
4953         }
4954     }
4955     return type_sp;
4956 }
4957
4958
4959 //----------------------------------------------------------------------
4960 // This function helps to ensure that the declaration contexts match for
4961 // two different DIEs. Often times debug information will refer to a
4962 // forward declaration of a type (the equivalent of "struct my_struct;".
4963 // There will often be a declaration of that type elsewhere that has the
4964 // full definition. When we go looking for the full type "my_struct", we
4965 // will find one or more matches in the accelerator tables and we will
4966 // then need to make sure the type was in the same declaration context
4967 // as the original DIE. This function can efficiently compare two DIEs
4968 // and will return true when the declaration context matches, and false
4969 // when they don't.
4970 //----------------------------------------------------------------------
4971 bool
4972 SymbolFileDWARF::DIEDeclContextsMatch (DWARFCompileUnit* cu1, const DWARFDebugInfoEntry *die1,
4973                                        DWARFCompileUnit* cu2, const DWARFDebugInfoEntry *die2)
4974 {
4975     if (die1 == die2)
4976         return true;
4977
4978 #if defined (LLDB_CONFIGURATION_DEBUG)
4979     // You can't and shouldn't call this function with a compile unit from
4980     // two different SymbolFileDWARF instances.
4981     assert (DebugInfo()->ContainsCompileUnit (cu1));
4982     assert (DebugInfo()->ContainsCompileUnit (cu2));
4983 #endif
4984
4985     DWARFDIECollection decl_ctx_1;
4986     DWARFDIECollection decl_ctx_2;
4987     //The declaration DIE stack is a stack of the declaration context
4988     // DIEs all the way back to the compile unit. If a type "T" is
4989     // declared inside a class "B", and class "B" is declared inside
4990     // a class "A" and class "A" is in a namespace "lldb", and the
4991     // namespace is in a compile unit, there will be a stack of DIEs:
4992     //
4993     //   [0] DW_TAG_class_type for "B"
4994     //   [1] DW_TAG_class_type for "A"
4995     //   [2] DW_TAG_namespace  for "lldb"
4996     //   [3] DW_TAG_compile_unit for the source file.
4997     //
4998     // We grab both contexts and make sure that everything matches
4999     // all the way back to the compiler unit.
5000
5001     // First lets grab the decl contexts for both DIEs
5002     die1->GetDeclContextDIEs (this, cu1, decl_ctx_1);
5003     die2->GetDeclContextDIEs (this, cu2, decl_ctx_2);
5004     // Make sure the context arrays have the same size, otherwise
5005     // we are done
5006     const size_t count1 = decl_ctx_1.Size();
5007     const size_t count2 = decl_ctx_2.Size();
5008     if (count1 != count2)
5009         return false;
5010
5011     // Make sure the DW_TAG values match all the way back up the
5012     // compile unit. If they don't, then we are done.
5013     const DWARFDebugInfoEntry *decl_ctx_die1;
5014     const DWARFDebugInfoEntry *decl_ctx_die2;
5015     size_t i;
5016     for (i=0; i<count1; i++)
5017     {
5018         decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i);
5019         decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i);
5020         if (decl_ctx_die1->Tag() != decl_ctx_die2->Tag())
5021             return false;
5022     }
5023 #if defined LLDB_CONFIGURATION_DEBUG
5024
5025     // Make sure the top item in the decl context die array is always
5026     // DW_TAG_compile_unit. If it isn't then something went wrong in
5027     // the DWARFDebugInfoEntry::GetDeclContextDIEs() function...
5028     assert (decl_ctx_1.GetDIEPtrAtIndex (count1 - 1)->Tag() == DW_TAG_compile_unit);
5029
5030 #endif
5031     // Always skip the compile unit when comparing by only iterating up to
5032     // "count - 1". Here we compare the names as we go.
5033     for (i=0; i<count1 - 1; i++)
5034     {
5035         decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i);
5036         decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i);
5037         const char *name1 = decl_ctx_die1->GetName(this, cu1);
5038         const char *name2 = decl_ctx_die2->GetName(this, cu2);
5039         // If the string was from a DW_FORM_strp, then the pointer will often
5040         // be the same!
5041         if (name1 == name2)
5042             continue;
5043
5044         // Name pointers are not equal, so only compare the strings
5045         // if both are not NULL.
5046         if (name1 && name2)
5047         {
5048             // If the strings don't compare, we are done...
5049             if (strcmp(name1, name2) != 0)
5050                 return false;
5051         }
5052         else
5053         {
5054             // One name was NULL while the other wasn't
5055             return false;
5056         }
5057     }
5058     // We made it through all of the checks and the declaration contexts
5059     // are equal.
5060     return true;
5061 }
5062
5063 // This function can be used when a DIE is found that is a forward declaration
5064 // DIE and we want to try and find a type that has the complete definition.
5065 // "cu" and "die" must be from this SymbolFileDWARF
5066 TypeSP
5067 SymbolFileDWARF::FindDefinitionTypeForDIE (DWARFCompileUnit* cu,
5068                                            const DWARFDebugInfoEntry *die,
5069                                            const ConstString &type_name)
5070 {
5071     TypeSP type_sp;
5072
5073 #if defined (LLDB_CONFIGURATION_DEBUG)
5074     // You can't and shouldn't call this function with a compile unit from
5075     // another SymbolFileDWARF instance.
5076     assert (DebugInfo()->ContainsCompileUnit (cu));
5077 #endif
5078
5079     if (cu == NULL || die == NULL || !type_name)
5080         return type_sp;
5081
5082     std::string qualified_name;
5083
5084     Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION|DWARF_LOG_LOOKUPS));
5085     if (log)
5086     {
5087         die->GetQualifiedName(this, cu, qualified_name);
5088         GetObjectFile()->GetModule()->LogMessage (log,
5089                                                   "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x (%s), name='%s')",
5090                                                   die->GetOffset(),
5091                                                   qualified_name.c_str(),
5092                                                   type_name.GetCString());
5093     }
5094
5095     DIEArray die_offsets;
5096
5097     if (m_using_apple_tables)
5098     {
5099         if (m_apple_types_ap.get())
5100         {
5101             const bool has_tag = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeTag);
5102             const bool has_qualified_name_hash = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeQualNameHash);
5103             if (has_tag && has_qualified_name_hash)
5104             {
5105                 if (qualified_name.empty())
5106                     die->GetQualifiedName(this, cu, qualified_name);
5107
5108                 const uint32_t qualified_name_hash = MappedHash::HashStringUsingDJB (qualified_name.c_str());
5109                 if (log)
5110                     GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTagAndQualifiedNameHash()");
5111                 m_apple_types_ap->FindByNameAndTagAndQualifiedNameHash (type_name.GetCString(), die->Tag(), qualified_name_hash, die_offsets);
5112             }
5113             else if (has_tag)
5114             {
5115                 if (log)
5116                     GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTag()");
5117                 m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), die->Tag(), die_offsets);
5118             }
5119             else
5120             {
5121                 m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets);
5122             }
5123         }
5124     }
5125     else
5126     {
5127         if (!m_indexed)
5128             Index ();
5129
5130         m_type_index.Find (type_name, die_offsets);
5131     }
5132
5133     const size_t num_matches = die_offsets.size();
5134
5135     const dw_tag_t die_tag = die->Tag();
5136
5137     DWARFCompileUnit* type_cu = NULL;
5138     const DWARFDebugInfoEntry* type_die = NULL;
5139     if (num_matches)
5140     {
5141         DWARFDebugInfo* debug_info = DebugInfo();
5142         for (size_t i=0; i<num_matches; ++i)
5143         {
5144             const dw_offset_t die_offset = die_offsets[i];
5145             type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
5146
5147             if (type_die)
5148             {
5149                 bool try_resolving_type = false;
5150
5151                 // Don't try and resolve the DIE we are looking for with the DIE itself!
5152                 if (type_die != die)
5153                 {
5154                     const dw_tag_t type_die_tag = type_die->Tag();
5155                     // Make sure the tags match
5156                     if (type_die_tag == die_tag)
5157                     {
5158                         // The tags match, lets try resolving this type
5159                         try_resolving_type = true;
5160                     }
5161                     else
5162                     {
5163                         // The tags don't match, but we need to watch our for a
5164                         // forward declaration for a struct and ("struct foo")
5165                         // ends up being a class ("class foo { ... };") or
5166                         // vice versa.
5167                         switch (type_die_tag)
5168                         {
5169                         case DW_TAG_class_type:
5170                             // We had a "class foo", see if we ended up with a "struct foo { ... };"
5171                             try_resolving_type = (die_tag == DW_TAG_structure_type);
5172                             break;
5173                         case DW_TAG_structure_type:
5174                             // We had a "struct foo", see if we ended up with a "class foo { ... };"
5175                             try_resolving_type = (die_tag == DW_TAG_class_type);
5176                             break;
5177                         default:
5178                             // Tags don't match, don't event try to resolve
5179                             // using this type whose name matches....
5180                             break;
5181                         }
5182                     }
5183                 }
5184
5185                 if (try_resolving_type)
5186                 {
5187                     if (log)
5188                     {
5189                         std::string qualified_name;
5190                         type_die->GetQualifiedName(this, cu, qualified_name);
5191                         GetObjectFile()->GetModule()->LogMessage (log,
5192                                                                   "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x, name='%s') trying die=0x%8.8x (%s)",
5193                                                                   die->GetOffset(),
5194                                                                   type_name.GetCString(),
5195                                                                   type_die->GetOffset(),
5196                                                                   qualified_name.c_str());
5197                     }
5198
5199                     // Make sure the decl contexts match all the way up
5200                     if (DIEDeclContextsMatch(cu, die, type_cu, type_die))
5201                     {
5202                         Type *resolved_type = ResolveType (type_cu, type_die, false);
5203                         if (resolved_type && resolved_type != DIE_IS_BEING_PARSED)
5204                         {
5205                             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",
5206                                           MakeUserID(die->GetOffset()),
5207                                           MakeUserID(cu->GetOffset()),
5208                                           m_obj_file->GetFileSpec().GetFilename().AsCString(),
5209                                           MakeUserID(type_die->GetOffset()),
5210                                           MakeUserID(type_cu->GetOffset()));
5211
5212                             m_die_to_type[die] = resolved_type;
5213                             type_sp = resolved_type->shared_from_this();
5214                             break;
5215                         }
5216                     }
5217                 }
5218                 else
5219                 {
5220                     if (log)
5221                     {
5222                         std::string qualified_name;
5223                         type_die->GetQualifiedName(this, cu, qualified_name);
5224                         GetObjectFile()->GetModule()->LogMessage (log,
5225                                                                   "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x, name='%s') ignoring die=0x%8.8x (%s)",
5226                                                                   die->GetOffset(),
5227                                                                   type_name.GetCString(),
5228                                                                   type_die->GetOffset(),
5229                                                                   qualified_name.c_str());
5230                     }
5231                 }
5232             }
5233             else
5234             {
5235                 if (m_using_apple_tables)
5236                 {
5237                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
5238                                                                                die_offset, type_name.GetCString());
5239                 }
5240             }
5241
5242         }
5243     }
5244     return type_sp;
5245 }
5246
5247 TypeSP
5248 SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &dwarf_decl_ctx)
5249 {
5250     TypeSP type_sp;
5251
5252     const uint32_t dwarf_decl_ctx_count = dwarf_decl_ctx.GetSize();
5253     if (dwarf_decl_ctx_count > 0)
5254     {
5255         const ConstString type_name(dwarf_decl_ctx[0].name);
5256         const dw_tag_t tag = dwarf_decl_ctx[0].tag;
5257
5258         if (type_name)
5259         {
5260             Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION|DWARF_LOG_LOOKUPS));
5261             if (log)
5262             {
5263                 GetObjectFile()->GetModule()->LogMessage (log,
5264                                                           "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s')",
5265                                                           DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
5266                                                           dwarf_decl_ctx.GetQualifiedName());
5267             }
5268
5269             DIEArray die_offsets;
5270
5271             if (m_using_apple_tables)
5272             {
5273                 if (m_apple_types_ap.get())
5274                 {
5275                     const bool has_tag = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeTag);
5276                     const bool has_qualified_name_hash = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeQualNameHash);
5277                     if (has_tag && has_qualified_name_hash)
5278                     {
5279                         const char *qualified_name = dwarf_decl_ctx.GetQualifiedName();
5280                         const uint32_t qualified_name_hash = MappedHash::HashStringUsingDJB (qualified_name);
5281                         if (log)
5282                             GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTagAndQualifiedNameHash()");
5283                         m_apple_types_ap->FindByNameAndTagAndQualifiedNameHash (type_name.GetCString(), tag, qualified_name_hash, die_offsets);
5284                     }
5285                     else if (has_tag)
5286                     {
5287                         if (log)
5288                             GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTag()");
5289                         m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), tag, die_offsets);
5290                     }
5291                     else
5292                     {
5293                         m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets);
5294                     }
5295                 }
5296             }
5297             else
5298             {
5299                 if (!m_indexed)
5300                     Index ();
5301
5302                 m_type_index.Find (type_name, die_offsets);
5303             }
5304
5305             const size_t num_matches = die_offsets.size();
5306
5307
5308             DWARFCompileUnit* type_cu = NULL;
5309             const DWARFDebugInfoEntry* type_die = NULL;
5310             if (num_matches)
5311             {
5312                 DWARFDebugInfo* debug_info = DebugInfo();
5313                 for (size_t i=0; i<num_matches; ++i)
5314                 {
5315                     const dw_offset_t die_offset = die_offsets[i];
5316                     type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
5317
5318                     if (type_die)
5319                     {
5320                         bool try_resolving_type = false;
5321
5322                         // Don't try and resolve the DIE we are looking for with the DIE itself!
5323                         const dw_tag_t type_tag = type_die->Tag();
5324                         // Make sure the tags match
5325                         if (type_tag == tag)
5326                         {
5327                             // The tags match, lets try resolving this type
5328                             try_resolving_type = true;
5329                         }
5330                         else
5331                         {
5332                             // The tags don't match, but we need to watch our for a
5333                             // forward declaration for a struct and ("struct foo")
5334                             // ends up being a class ("class foo { ... };") or
5335                             // vice versa.
5336                             switch (type_tag)
5337                             {
5338                                 case DW_TAG_class_type:
5339                                     // We had a "class foo", see if we ended up with a "struct foo { ... };"
5340                                     try_resolving_type = (tag == DW_TAG_structure_type);
5341                                     break;
5342                                 case DW_TAG_structure_type:
5343                                     // We had a "struct foo", see if we ended up with a "class foo { ... };"
5344                                     try_resolving_type = (tag == DW_TAG_class_type);
5345                                     break;
5346                                 default:
5347                                     // Tags don't match, don't event try to resolve
5348                                     // using this type whose name matches....
5349                                     break;
5350                             }
5351                         }
5352
5353                         if (try_resolving_type)
5354                         {
5355                             DWARFDeclContext type_dwarf_decl_ctx;
5356                             type_die->GetDWARFDeclContext (this, type_cu, type_dwarf_decl_ctx);
5357
5358                             if (log)
5359                             {
5360                                 GetObjectFile()->GetModule()->LogMessage (log,
5361                                                                           "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') trying die=0x%8.8x (%s)",
5362                                                                           DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
5363                                                                           dwarf_decl_ctx.GetQualifiedName(),
5364                                                                           type_die->GetOffset(),
5365                                                                           type_dwarf_decl_ctx.GetQualifiedName());
5366                             }
5367
5368                             // Make sure the decl contexts match all the way up
5369                             if (dwarf_decl_ctx == type_dwarf_decl_ctx)
5370                             {
5371                                 Type *resolved_type = ResolveType (type_cu, type_die, false);
5372                                 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED)
5373                                 {
5374                                     type_sp = resolved_type->shared_from_this();
5375                                     break;
5376                                 }
5377                             }
5378                         }
5379                         else
5380                         {
5381                             if (log)
5382                             {
5383                                 std::string qualified_name;
5384                                 type_die->GetQualifiedName(this, type_cu, qualified_name);
5385                                 GetObjectFile()->GetModule()->LogMessage (log,
5386                                                                           "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') ignoring die=0x%8.8x (%s)",
5387                                                                           DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
5388                                                                           dwarf_decl_ctx.GetQualifiedName(),
5389                                                                           type_die->GetOffset(),
5390                                                                           qualified_name.c_str());
5391                             }
5392                         }
5393                     }
5394                     else
5395                     {
5396                         if (m_using_apple_tables)
5397                         {
5398                             GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
5399                                                                                        die_offset, type_name.GetCString());
5400                         }
5401                     }
5402
5403                 }
5404             }
5405         }
5406     }
5407     return type_sp;
5408 }
5409
5410 bool
5411 SymbolFileDWARF::CopyUniqueClassMethodTypes (SymbolFileDWARF *src_symfile,
5412                                              Type *class_type,
5413                                              DWARFCompileUnit* src_cu,
5414                                              const DWARFDebugInfoEntry *src_class_die,
5415                                              DWARFCompileUnit* dst_cu,
5416                                              const DWARFDebugInfoEntry *dst_class_die,
5417                                              DWARFDIECollection &failures)
5418 {
5419     if (!class_type || !src_cu || !src_class_die || !dst_cu || !dst_class_die)
5420         return false;
5421     if (src_class_die->Tag() != dst_class_die->Tag())
5422         return false;
5423
5424     // We need to complete the class type so we can get all of the method types
5425     // parsed so we can then unique those types to their equivalent counterparts
5426     // in "dst_cu" and "dst_class_die"
5427     class_type->GetClangFullType();
5428
5429     const DWARFDebugInfoEntry *src_die;
5430     const DWARFDebugInfoEntry *dst_die;
5431     UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die;
5432     UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die;
5433     UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die_artificial;
5434     UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die_artificial;
5435     for (src_die = src_class_die->GetFirstChild(); src_die != NULL; src_die = src_die->GetSibling())
5436     {
5437         if (src_die->Tag() == DW_TAG_subprogram)
5438         {
5439             // Make sure this is a declaration and not a concrete instance by looking
5440             // for DW_AT_declaration set to 1. Sometimes concrete function instances
5441             // are placed inside the class definitions and shouldn't be included in
5442             // the list of things are are tracking here.
5443             if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_declaration, 0) == 1)
5444             {
5445                 const char *src_name = src_die->GetMangledName (src_symfile, src_cu);
5446                 if (src_name)
5447                 {
5448                     ConstString src_const_name(src_name);
5449                     if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_artificial, 0))
5450                         src_name_to_die_artificial.Append(src_const_name.GetCString(), src_die);
5451                     else
5452                         src_name_to_die.Append(src_const_name.GetCString(), src_die);
5453                 }
5454             }
5455         }
5456     }
5457     for (dst_die = dst_class_die->GetFirstChild(); dst_die != NULL; dst_die = dst_die->GetSibling())
5458     {
5459         if (dst_die->Tag() == DW_TAG_subprogram)
5460         {
5461             // Make sure this is a declaration and not a concrete instance by looking
5462             // for DW_AT_declaration set to 1. Sometimes concrete function instances
5463             // are placed inside the class definitions and shouldn't be included in
5464             // the list of things are are tracking here.
5465             if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_declaration, 0) == 1)
5466             {
5467                 const char *dst_name = dst_die->GetMangledName (this, dst_cu);
5468                 if (dst_name)
5469                 {
5470                     ConstString dst_const_name(dst_name);
5471                     if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_artificial, 0))
5472                         dst_name_to_die_artificial.Append(dst_const_name.GetCString(), dst_die);
5473                     else
5474                         dst_name_to_die.Append(dst_const_name.GetCString(), dst_die);
5475                 }
5476             }
5477         }
5478     }
5479     const uint32_t src_size = src_name_to_die.GetSize ();
5480     const uint32_t dst_size = dst_name_to_die.GetSize ();
5481     Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | DWARF_LOG_TYPE_COMPLETION));
5482
5483     // Is everything kosher so we can go through the members at top speed?
5484     bool fast_path = true;
5485
5486     if (src_size != dst_size)
5487     {
5488         if (src_size != 0 && dst_size != 0)
5489         {
5490             if (log)
5491                 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)",
5492                             src_class_die->GetOffset(),
5493                             dst_class_die->GetOffset(),
5494                             src_size,
5495                             dst_size);
5496         }
5497
5498         fast_path = false;
5499     }
5500
5501     uint32_t idx;
5502
5503     if (fast_path)
5504     {
5505         for (idx = 0; idx < src_size; ++idx)
5506         {
5507             src_die = src_name_to_die.GetValueAtIndexUnchecked (idx);
5508             dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx);
5509
5510             if (src_die->Tag() != dst_die->Tag())
5511             {
5512                 if (log)
5513                     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)",
5514                                 src_class_die->GetOffset(),
5515                                 dst_class_die->GetOffset(),
5516                                 src_die->GetOffset(),
5517                                 DW_TAG_value_to_name(src_die->Tag()),
5518                                 dst_die->GetOffset(),
5519                                 DW_TAG_value_to_name(src_die->Tag()));
5520                 fast_path = false;
5521             }
5522
5523             const char *src_name = src_die->GetMangledName (src_symfile, src_cu);
5524             const char *dst_name = dst_die->GetMangledName (this, dst_cu);
5525
5526             // Make sure the names match
5527             if (src_name == dst_name || (strcmp (src_name, dst_name) == 0))
5528                 continue;
5529
5530             if (log)
5531                 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)",
5532                             src_class_die->GetOffset(),
5533                             dst_class_die->GetOffset(),
5534                             src_die->GetOffset(),
5535                             src_name,
5536                             dst_die->GetOffset(),
5537                             dst_name);
5538
5539             fast_path = false;
5540         }
5541     }
5542
5543     // Now do the work of linking the DeclContexts and Types.
5544     if (fast_path)
5545     {
5546         // We can do this quickly.  Just run across the tables index-for-index since
5547         // we know each node has matching names and tags.
5548         for (idx = 0; idx < src_size; ++idx)
5549         {
5550             src_die = src_name_to_die.GetValueAtIndexUnchecked (idx);
5551             dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx);
5552
5553             clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die];
5554             if (src_decl_ctx)
5555             {
5556                 if (log)
5557                     log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x",
5558                                  static_cast<void*>(src_decl_ctx),
5559                                  src_die->GetOffset(), dst_die->GetOffset());
5560                 LinkDeclContextToDIE (src_decl_ctx, dst_die);
5561             }
5562             else
5563             {
5564                 if (log)
5565                     log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found",
5566                                  src_die->GetOffset(), dst_die->GetOffset());
5567             }
5568
5569             Type *src_child_type = m_die_to_type[src_die];
5570             if (src_child_type)
5571             {
5572                 if (log)
5573                     log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x",
5574                                  static_cast<void*>(src_child_type),
5575                                  src_child_type->GetID(),
5576                                  src_die->GetOffset(), dst_die->GetOffset());
5577                 m_die_to_type[dst_die] = src_child_type;
5578             }
5579             else
5580             {
5581                 if (log)
5582                     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());
5583             }
5584         }
5585     }
5586     else
5587     {
5588         // We must do this slowly.  For each member of the destination, look
5589         // up a member in the source with the same name, check its tag, and
5590         // unique them if everything matches up.  Report failures.
5591
5592         if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty())
5593         {
5594             src_name_to_die.Sort();
5595
5596             for (idx = 0; idx < dst_size; ++idx)
5597             {
5598                 const char *dst_name = dst_name_to_die.GetCStringAtIndex(idx);
5599                 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
5600                 src_die = src_name_to_die.Find(dst_name, NULL);
5601
5602                 if (src_die && (src_die->Tag() == dst_die->Tag()))
5603                 {
5604                     clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die];
5605                     if (src_decl_ctx)
5606                     {
5607                         if (log)
5608                             log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x",
5609                                          static_cast<void*>(src_decl_ctx),
5610                                          src_die->GetOffset(),
5611                                          dst_die->GetOffset());
5612                         LinkDeclContextToDIE (src_decl_ctx, dst_die);
5613                     }
5614                     else
5615                     {
5616                         if (log)
5617                             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());
5618                     }
5619
5620                     Type *src_child_type = m_die_to_type[src_die];
5621                     if (src_child_type)
5622                     {
5623                         if (log)
5624                             log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x",
5625                                          static_cast<void*>(src_child_type),
5626                                          src_child_type->GetID(),
5627                                          src_die->GetOffset(),
5628                                          dst_die->GetOffset());
5629                         m_die_to_type[dst_die] = src_child_type;
5630                     }
5631                     else
5632                     {
5633                         if (log)
5634                             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());
5635                     }
5636                 }
5637                 else
5638                 {
5639                     if (log)
5640                         log->Printf ("warning: couldn't find a match for 0x%8.8x", dst_die->GetOffset());
5641
5642                     failures.Append(dst_die);
5643                 }
5644             }
5645         }
5646     }
5647
5648     const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize ();
5649     const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize ();
5650
5651     UniqueCStringMap<const DWARFDebugInfoEntry *> name_to_die_artificial_not_in_src;
5652
5653     if (src_size_artificial && dst_size_artificial)
5654     {
5655         dst_name_to_die_artificial.Sort();
5656
5657         for (idx = 0; idx < src_size_artificial; ++idx)
5658         {
5659             const char *src_name_artificial = src_name_to_die_artificial.GetCStringAtIndex(idx);
5660             src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked (idx);
5661             dst_die = dst_name_to_die_artificial.Find(src_name_artificial, NULL);
5662
5663             if (dst_die)
5664             {
5665                 // Both classes have the artificial types, link them
5666                 clang::DeclContext *src_decl_ctx = m_die_to_decl_ctx[src_die];
5667                 if (src_decl_ctx)
5668                 {
5669                     if (log)
5670                         log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x",
5671                                      static_cast<void*>(src_decl_ctx),
5672                                      src_die->GetOffset(), dst_die->GetOffset());
5673                     LinkDeclContextToDIE (src_decl_ctx, dst_die);
5674                 }
5675                 else
5676                 {
5677                     if (log)
5678                         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());
5679                 }
5680
5681                 Type *src_child_type = m_die_to_type[src_die];
5682                 if (src_child_type)
5683                 {
5684                     if (log)
5685                         log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x",
5686                                      static_cast<void*>(src_child_type),
5687                                      src_child_type->GetID(),
5688                                      src_die->GetOffset(), dst_die->GetOffset());
5689                     m_die_to_type[dst_die] = src_child_type;
5690                 }
5691                 else
5692                 {
5693                     if (log)
5694                         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());
5695                 }
5696             }
5697         }
5698     }
5699
5700     if (dst_size_artificial)
5701     {
5702         for (idx = 0; idx < dst_size_artificial; ++idx)
5703         {
5704             const char *dst_name_artificial = dst_name_to_die_artificial.GetCStringAtIndex(idx);
5705             dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked (idx);
5706             if (log)
5707                 log->Printf ("warning: need to create artificial method for 0x%8.8x for method '%s'", dst_die->GetOffset(), dst_name_artificial);
5708
5709             failures.Append(dst_die);
5710         }
5711     }
5712
5713     return (failures.Size() != 0);
5714 }
5715
5716 TypeSP
5717 SymbolFileDWARF::ParseType (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die, bool *type_is_new_ptr)
5718 {
5719     TypeSP type_sp;
5720
5721     if (type_is_new_ptr)
5722         *type_is_new_ptr = false;
5723
5724 #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE)
5725     static DIEStack g_die_stack;
5726     DIEStack::ScopedPopper scoped_die_logger(g_die_stack);
5727 #endif
5728
5729     AccessType accessibility = eAccessNone;
5730     if (die != NULL)
5731     {
5732         Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
5733         if (log)
5734         {
5735             const DWARFDebugInfoEntry *context_die;
5736             clang::DeclContext *context = GetClangDeclContextContainingDIE (dwarf_cu, die, &context_die);
5737
5738             GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')",
5739                                                       die->GetOffset(),
5740                                                       static_cast<void*>(context),
5741                                                       context_die->GetOffset(),
5742                                                       DW_TAG_value_to_name(die->Tag()),
5743                                                       die->GetName(this, dwarf_cu));
5744
5745 #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE)
5746             scoped_die_logger.Push (dwarf_cu, die);
5747             g_die_stack.LogDIEs(log, this);
5748 #endif
5749         }
5750 //
5751 //        Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
5752 //        if (log && dwarf_cu)
5753 //        {
5754 //            StreamString s;
5755 //            die->DumpLocation (this, dwarf_cu, s);
5756 //            GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData());
5757 //
5758 //        }
5759
5760         Type *type_ptr = m_die_to_type.lookup (die);
5761         TypeList* type_list = GetTypeList();
5762         if (type_ptr == NULL)
5763         {
5764             ClangASTContext &ast = GetClangASTContext();
5765             if (type_is_new_ptr)
5766                 *type_is_new_ptr = true;
5767
5768             const dw_tag_t tag = die->Tag();
5769
5770             bool is_forward_declaration = false;
5771             DWARFDebugInfoEntry::Attributes attributes;
5772             const char *type_name_cstr = NULL;
5773             ConstString type_name_const_str;
5774             Type::ResolveState resolve_state = Type::eResolveStateUnresolved;
5775             uint64_t byte_size = 0;
5776             Declaration decl;
5777
5778             Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID;
5779             ClangASTType clang_type;
5780             DWARFFormValue form_value;
5781
5782             dw_attr_t attr;
5783
5784             switch (tag)
5785             {
5786             case DW_TAG_base_type:
5787             case DW_TAG_pointer_type:
5788             case DW_TAG_reference_type:
5789             case DW_TAG_rvalue_reference_type:
5790             case DW_TAG_typedef:
5791             case DW_TAG_const_type:
5792             case DW_TAG_restrict_type:
5793             case DW_TAG_volatile_type:
5794             case DW_TAG_unspecified_type:
5795                 {
5796                     // Set a bit that lets us know that we are currently parsing this
5797                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
5798
5799                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
5800                     uint32_t encoding = 0;
5801                     lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
5802
5803                     if (num_attributes > 0)
5804                     {
5805                         uint32_t i;
5806                         for (i=0; i<num_attributes; ++i)
5807                         {
5808                             attr = attributes.AttributeAtIndex(i);
5809                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
5810                             {
5811                                 switch (attr)
5812                                 {
5813                                 case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
5814                                 case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
5815                                 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
5816                                 case DW_AT_name:
5817
5818                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
5819                                     // Work around a bug in llvm-gcc where they give a name to a reference type which doesn't
5820                                     // include the "&"...
5821                                     if (tag == DW_TAG_reference_type)
5822                                     {
5823                                         if (strchr (type_name_cstr, '&') == NULL)
5824                                             type_name_cstr = NULL;
5825                                     }
5826                                     if (type_name_cstr)
5827                                         type_name_const_str.SetCString(type_name_cstr);
5828                                     break;
5829                                 case DW_AT_byte_size:   byte_size = form_value.Unsigned(); break;
5830                                 case DW_AT_encoding:    encoding = form_value.Unsigned(); break;
5831                                 case DW_AT_type:        encoding_uid = form_value.Reference(dwarf_cu); break;
5832                                 default:
5833                                 case DW_AT_sibling:
5834                                     break;
5835                                 }
5836                             }
5837                         }
5838                     }
5839
5840                     DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\") type => 0x%8.8lx\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr, encoding_uid);
5841
5842                     switch (tag)
5843                     {
5844                     default:
5845                         break;
5846
5847                     case DW_TAG_unspecified_type:
5848                         if (strcmp(type_name_cstr, "nullptr_t") == 0 ||
5849                             strcmp(type_name_cstr, "decltype(nullptr)") == 0 )
5850                         {
5851                             resolve_state = Type::eResolveStateFull;
5852                             clang_type = ast.GetBasicType(eBasicTypeNullPtr);
5853                             break;
5854                         }
5855                         // Fall through to base type below in case we can handle the type there...
5856
5857                     case DW_TAG_base_type:
5858                         resolve_state = Type::eResolveStateFull;
5859                         clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr,
5860                                                                                    encoding,
5861                                                                                    byte_size * 8);
5862                         break;
5863
5864                     case DW_TAG_pointer_type:           encoding_data_type = Type::eEncodingIsPointerUID;           break;
5865                     case DW_TAG_reference_type:         encoding_data_type = Type::eEncodingIsLValueReferenceUID;   break;
5866                     case DW_TAG_rvalue_reference_type:  encoding_data_type = Type::eEncodingIsRValueReferenceUID;   break;
5867                     case DW_TAG_typedef:                encoding_data_type = Type::eEncodingIsTypedefUID;           break;
5868                     case DW_TAG_const_type:             encoding_data_type = Type::eEncodingIsConstUID;             break;
5869                     case DW_TAG_restrict_type:          encoding_data_type = Type::eEncodingIsRestrictUID;          break;
5870                     case DW_TAG_volatile_type:          encoding_data_type = Type::eEncodingIsVolatileUID;          break;
5871                     }
5872
5873                     if (!clang_type && (encoding_data_type == Type::eEncodingIsPointerUID || encoding_data_type == Type::eEncodingIsTypedefUID) && sc.comp_unit != NULL)
5874                     {
5875                         bool translation_unit_is_objc = (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus);
5876
5877                         if (translation_unit_is_objc)
5878                         {
5879                             if (type_name_cstr != NULL)
5880                             {
5881                                 static ConstString g_objc_type_name_id("id");
5882                                 static ConstString g_objc_type_name_Class("Class");
5883                                 static ConstString g_objc_type_name_selector("SEL");
5884
5885                                 if (type_name_const_str == g_objc_type_name_id)
5886                                 {
5887                                     if (log)
5888                                         GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'id' built-in type.",
5889                                                                                   die->GetOffset(),
5890                                                                                   DW_TAG_value_to_name(die->Tag()),
5891                                                                                   die->GetName(this, dwarf_cu));
5892                                     clang_type = ast.GetBasicType(eBasicTypeObjCID);
5893                                     encoding_data_type = Type::eEncodingIsUID;
5894                                     encoding_uid = LLDB_INVALID_UID;
5895                                     resolve_state = Type::eResolveStateFull;
5896
5897                                 }
5898                                 else if (type_name_const_str == g_objc_type_name_Class)
5899                                 {
5900                                     if (log)
5901                                         GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'Class' built-in type.",
5902                                                                                   die->GetOffset(),
5903                                                                                   DW_TAG_value_to_name(die->Tag()),
5904                                                                                   die->GetName(this, dwarf_cu));
5905                                     clang_type = ast.GetBasicType(eBasicTypeObjCClass);
5906                                     encoding_data_type = Type::eEncodingIsUID;
5907                                     encoding_uid = LLDB_INVALID_UID;
5908                                     resolve_state = Type::eResolveStateFull;
5909                                 }
5910                                 else if (type_name_const_str == g_objc_type_name_selector)
5911                                 {
5912                                     if (log)
5913                                         GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'selector' built-in type.",
5914                                                                                   die->GetOffset(),
5915                                                                                   DW_TAG_value_to_name(die->Tag()),
5916                                                                                   die->GetName(this, dwarf_cu));
5917                                     clang_type = ast.GetBasicType(eBasicTypeObjCSel);
5918                                     encoding_data_type = Type::eEncodingIsUID;
5919                                     encoding_uid = LLDB_INVALID_UID;
5920                                     resolve_state = Type::eResolveStateFull;
5921                                 }
5922                             }
5923                             else if (encoding_data_type == Type::eEncodingIsPointerUID && encoding_uid != LLDB_INVALID_UID)
5924                             {
5925                                 // Clang sometimes erroneously emits id as objc_object*.  In that case we fix up the type to "id".
5926
5927                                 DWARFDebugInfoEntry* encoding_die = dwarf_cu->GetDIEPtr(encoding_uid);
5928
5929                                 if (encoding_die && encoding_die->Tag() == DW_TAG_structure_type)
5930                                 {
5931                                     if (const char *struct_name = encoding_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL))
5932                                     {
5933                                         if (!strcmp(struct_name, "objc_object"))
5934                                         {
5935                                             if (log)
5936                                                 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is 'objc_object*', which we overrode to 'id'.",
5937                                                                                           die->GetOffset(),
5938                                                                                           DW_TAG_value_to_name(die->Tag()),
5939                                                                                           die->GetName(this, dwarf_cu));
5940                                             clang_type = ast.GetBasicType(eBasicTypeObjCID);
5941                                             encoding_data_type = Type::eEncodingIsUID;
5942                                             encoding_uid = LLDB_INVALID_UID;
5943                                             resolve_state = Type::eResolveStateFull;
5944                                         }
5945                                     }
5946                                 }
5947                             }
5948                         }
5949                     }
5950
5951                     type_sp.reset( new Type (MakeUserID(die->GetOffset()),
5952                                              this,
5953                                              type_name_const_str,
5954                                              byte_size,
5955                                              NULL,
5956                                              encoding_uid,
5957                                              encoding_data_type,
5958                                              &decl,
5959                                              clang_type,
5960                                              resolve_state));
5961
5962                     m_die_to_type[die] = type_sp.get();
5963
5964 //                  Type* encoding_type = GetUniquedTypeForDIEOffset(encoding_uid, type_sp, NULL, 0, 0, false);
5965 //                  if (encoding_type != NULL)
5966 //                  {
5967 //                      if (encoding_type != DIE_IS_BEING_PARSED)
5968 //                          type_sp->SetEncodingType(encoding_type);
5969 //                      else
5970 //                          m_indirect_fixups.push_back(type_sp.get());
5971 //                  }
5972                 }
5973                 break;
5974
5975             case DW_TAG_structure_type:
5976             case DW_TAG_union_type:
5977             case DW_TAG_class_type:
5978                 {
5979                     // Set a bit that lets us know that we are currently parsing this
5980                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
5981                     bool byte_size_valid = false;
5982
5983                     LanguageType class_language = eLanguageTypeUnknown;
5984                     bool is_complete_objc_class = false;
5985                     //bool struct_is_class = false;
5986                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
5987                     if (num_attributes > 0)
5988                     {
5989                         uint32_t i;
5990                         for (i=0; i<num_attributes; ++i)
5991                         {
5992                             attr = attributes.AttributeAtIndex(i);
5993                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
5994                             {
5995                                 switch (attr)
5996                                 {
5997                                 case DW_AT_decl_file:
5998                                     if (dwarf_cu->DW_AT_decl_file_attributes_are_invalid())
5999                                     {
6000                                         // llvm-gcc outputs invalid DW_AT_decl_file attributes that always
6001                                         // point to the compile unit file, so we clear this invalid value
6002                                         // so that we can still unique types efficiently.
6003                                         decl.SetFile(FileSpec ("<invalid>", false));
6004                                     }
6005                                     else
6006                                         decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned()));
6007                                     break;
6008
6009                                 case DW_AT_decl_line:
6010                                     decl.SetLine(form_value.Unsigned());
6011                                     break;
6012
6013                                 case DW_AT_decl_column:
6014                                     decl.SetColumn(form_value.Unsigned());
6015                                     break;
6016
6017                                 case DW_AT_name:
6018                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
6019                                     type_name_const_str.SetCString(type_name_cstr);
6020                                     break;
6021
6022                                 case DW_AT_byte_size:
6023                                     byte_size = form_value.Unsigned();
6024                                     byte_size_valid = true;
6025                                     break;
6026
6027                                 case DW_AT_accessibility:
6028                                     accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
6029                                     break;
6030
6031                                 case DW_AT_declaration:
6032                                     is_forward_declaration = form_value.Boolean();
6033                                     break;
6034
6035                                 case DW_AT_APPLE_runtime_class:
6036                                     class_language = (LanguageType)form_value.Signed();
6037                                     break;
6038
6039                                 case DW_AT_APPLE_objc_complete_type:
6040                                     is_complete_objc_class = form_value.Signed();
6041                                     break;
6042
6043                                 case DW_AT_allocated:
6044                                 case DW_AT_associated:
6045                                 case DW_AT_data_location:
6046                                 case DW_AT_description:
6047                                 case DW_AT_start_scope:
6048                                 case DW_AT_visibility:
6049                                 default:
6050                                 case DW_AT_sibling:
6051                                     break;
6052                                 }
6053                             }
6054                         }
6055                     }
6056
6057                     // UniqueDWARFASTType is large, so don't create a local variables on the
6058                     // stack, put it on the heap. This function is often called recursively
6059                     // and clang isn't good and sharing the stack space for variables in different blocks.
6060                     std::unique_ptr<UniqueDWARFASTType> unique_ast_entry_ap(new UniqueDWARFASTType());
6061
6062                     // Only try and unique the type if it has a name.
6063                     if (type_name_const_str &&
6064                         GetUniqueDWARFASTTypeMap().Find (type_name_const_str,
6065                                                          this,
6066                                                          dwarf_cu,
6067                                                          die,
6068                                                          decl,
6069                                                          byte_size_valid ? byte_size : -1,
6070                                                          *unique_ast_entry_ap))
6071                     {
6072                         // We have already parsed this type or from another
6073                         // compile unit. GCC loves to use the "one definition
6074                         // rule" which can result in multiple definitions
6075                         // of the same class over and over in each compile
6076                         // unit.
6077                         type_sp = unique_ast_entry_ap->m_type_sp;
6078                         if (type_sp)
6079                         {
6080                             m_die_to_type[die] = type_sp.get();
6081                             return type_sp;
6082                         }
6083                     }
6084
6085                     DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6086
6087                     int tag_decl_kind = -1;
6088                     AccessType default_accessibility = eAccessNone;
6089                     if (tag == DW_TAG_structure_type)
6090                     {
6091                         tag_decl_kind = clang::TTK_Struct;
6092                         default_accessibility = eAccessPublic;
6093                     }
6094                     else if (tag == DW_TAG_union_type)
6095                     {
6096                         tag_decl_kind = clang::TTK_Union;
6097                         default_accessibility = eAccessPublic;
6098                     }
6099                     else if (tag == DW_TAG_class_type)
6100                     {
6101                         tag_decl_kind = clang::TTK_Class;
6102                         default_accessibility = eAccessPrivate;
6103                     }
6104
6105                     if (byte_size_valid && byte_size == 0 && type_name_cstr &&
6106                         die->HasChildren() == false &&
6107                         sc.comp_unit->GetLanguage() == eLanguageTypeObjC)
6108                     {
6109                         // Work around an issue with clang at the moment where
6110                         // forward declarations for objective C classes are emitted
6111                         // as:
6112                         //  DW_TAG_structure_type [2]
6113                         //  DW_AT_name( "ForwardObjcClass" )
6114                         //  DW_AT_byte_size( 0x00 )
6115                         //  DW_AT_decl_file( "..." )
6116                         //  DW_AT_decl_line( 1 )
6117                         //
6118                         // Note that there is no DW_AT_declaration and there are
6119                         // no children, and the byte size is zero.
6120                         is_forward_declaration = true;
6121                     }
6122
6123                     if (class_language == eLanguageTypeObjC ||
6124                         class_language == eLanguageTypeObjC_plus_plus)
6125                     {
6126                         if (!is_complete_objc_class && Supports_DW_AT_APPLE_objc_complete_type(dwarf_cu))
6127                         {
6128                             // We have a valid eSymbolTypeObjCClass class symbol whose
6129                             // name matches the current objective C class that we
6130                             // are trying to find and this DIE isn't the complete
6131                             // definition (we checked is_complete_objc_class above and
6132                             // know it is false), so the real definition is in here somewhere
6133                             type_sp = FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true);
6134
6135                             if (!type_sp && GetDebugMapSymfile ())
6136                             {
6137                                 // We weren't able to find a full declaration in
6138                                 // this DWARF, see if we have a declaration anywhere
6139                                 // else...
6140                                 type_sp = m_debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true);
6141                             }
6142
6143                             if (type_sp)
6144                             {
6145                                 if (log)
6146                                 {
6147                                     GetObjectFile()->GetModule()->LogMessage (log,
6148                                                                               "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an incomplete objc type, complete type is 0x%8.8" PRIx64,
6149                                                                               static_cast<void*>(this),
6150                                                                               die->GetOffset(),
6151                                                                               DW_TAG_value_to_name(tag),
6152                                                                               type_name_cstr,
6153                                                                               type_sp->GetID());
6154                                 }
6155
6156                                 // We found a real definition for this type elsewhere
6157                                 // so lets use it and cache the fact that we found
6158                                 // a complete type for this die
6159                                 m_die_to_type[die] = type_sp.get();
6160                                 return type_sp;
6161                             }
6162                         }
6163                     }
6164
6165
6166                     if (is_forward_declaration)
6167                     {
6168                         // We have a forward declaration to a type and we need
6169                         // to try and find a full declaration. We look in the
6170                         // current type index just in case we have a forward
6171                         // declaration followed by an actual declarations in the
6172                         // DWARF. If this fails, we need to look elsewhere...
6173                         if (log)
6174                         {
6175                             GetObjectFile()->GetModule()->LogMessage (log,
6176                                                                       "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, trying to find complete type",
6177                                                                       static_cast<void*>(this),
6178                                                                       die->GetOffset(),
6179                                                                       DW_TAG_value_to_name(tag),
6180                                                                       type_name_cstr);
6181                         }
6182
6183                         DWARFDeclContext die_decl_ctx;
6184                         die->GetDWARFDeclContext(this, dwarf_cu, die_decl_ctx);
6185
6186                         //type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str);
6187                         type_sp = FindDefinitionTypeForDWARFDeclContext (die_decl_ctx);
6188
6189                         if (!type_sp && GetDebugMapSymfile ())
6190                         {
6191                             // We weren't able to find a full declaration in
6192                             // this DWARF, see if we have a declaration anywhere
6193                             // else...
6194                             type_sp = m_debug_map_symfile->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx);
6195                         }
6196
6197                         if (type_sp)
6198                         {
6199                             if (log)
6200                             {
6201                                 GetObjectFile()->GetModule()->LogMessage (log,
6202                                                                           "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, complete type is 0x%8.8" PRIx64,
6203                                                                           static_cast<void*>(this),
6204                                                                           die->GetOffset(),
6205                                                                           DW_TAG_value_to_name(tag),
6206                                                                           type_name_cstr,
6207                                                                           type_sp->GetID());
6208                             }
6209
6210                             // We found a real definition for this type elsewhere
6211                             // so lets use it and cache the fact that we found
6212                             // a complete type for this die
6213                             m_die_to_type[die] = type_sp.get();
6214                             return type_sp;
6215                         }
6216                     }
6217                     assert (tag_decl_kind != -1);
6218                     bool clang_type_was_created = false;
6219                     clang_type.SetClangType(ast.getASTContext(), m_forward_decl_die_to_clang_type.lookup (die));
6220                     if (!clang_type)
6221                     {
6222                         const DWARFDebugInfoEntry *decl_ctx_die;
6223
6224                         clang::DeclContext *decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die);
6225                         if (accessibility == eAccessNone && decl_ctx)
6226                         {
6227                             // Check the decl context that contains this class/struct/union.
6228                             // If it is a class we must give it an accessibility.
6229                             const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind();
6230                             if (DeclKindIsCXXClass (containing_decl_kind))
6231                                 accessibility = default_accessibility;
6232                         }
6233
6234                         ClangASTMetadata metadata;
6235                         metadata.SetUserID(MakeUserID(die->GetOffset()));
6236                         metadata.SetIsDynamicCXXType(ClassOrStructIsVirtual (dwarf_cu, die));
6237
6238                         if (type_name_cstr && strchr (type_name_cstr, '<'))
6239                         {
6240                             ClangASTContext::TemplateParameterInfos template_param_infos;
6241                             if (ParseTemplateParameterInfos (dwarf_cu, die, template_param_infos))
6242                             {
6243                                 clang::ClassTemplateDecl *class_template_decl = ParseClassTemplateDecl (decl_ctx,
6244                                                                                                         accessibility,
6245                                                                                                         type_name_cstr,
6246                                                                                                         tag_decl_kind,
6247                                                                                                         template_param_infos);
6248
6249                                 clang::ClassTemplateSpecializationDecl *class_specialization_decl = ast.CreateClassTemplateSpecializationDecl (decl_ctx,
6250                                                                                                                                                class_template_decl,
6251                                                                                                                                                tag_decl_kind,
6252                                                                                                                                                template_param_infos);
6253                                 clang_type = ast.CreateClassTemplateSpecializationType (class_specialization_decl);
6254                                 clang_type_was_created = true;
6255
6256                                 GetClangASTContext().SetMetadata (class_template_decl, metadata);
6257                                 GetClangASTContext().SetMetadata (class_specialization_decl, metadata);
6258                             }
6259                         }
6260
6261                         if (!clang_type_was_created)
6262                         {
6263                             clang_type_was_created = true;
6264                             clang_type = ast.CreateRecordType (decl_ctx,
6265                                                                accessibility,
6266                                                                type_name_cstr,
6267                                                                tag_decl_kind,
6268                                                                class_language,
6269                                                                &metadata);
6270                         }
6271                     }
6272
6273                     // Store a forward declaration to this class type in case any
6274                     // parameters in any class methods need it for the clang
6275                     // types for function prototypes.
6276                     LinkDeclContextToDIE(clang_type.GetDeclContextForType(), die);
6277                     type_sp.reset (new Type (MakeUserID(die->GetOffset()),
6278                                              this,
6279                                              type_name_const_str,
6280                                              byte_size,
6281                                              NULL,
6282                                              LLDB_INVALID_UID,
6283                                              Type::eEncodingIsUID,
6284                                              &decl,
6285                                              clang_type,
6286                                              Type::eResolveStateForward));
6287
6288                     type_sp->SetIsCompleteObjCClass(is_complete_objc_class);
6289
6290
6291                     // Add our type to the unique type map so we don't
6292                     // end up creating many copies of the same type over
6293                     // and over in the ASTContext for our module
6294                     unique_ast_entry_ap->m_type_sp = type_sp;
6295                     unique_ast_entry_ap->m_symfile = this;
6296                     unique_ast_entry_ap->m_cu = dwarf_cu;
6297                     unique_ast_entry_ap->m_die = die;
6298                     unique_ast_entry_ap->m_declaration = decl;
6299                     unique_ast_entry_ap->m_byte_size = byte_size;
6300                     GetUniqueDWARFASTTypeMap().Insert (type_name_const_str,
6301                                                        *unique_ast_entry_ap);
6302
6303                     if (is_forward_declaration && die->HasChildren())
6304                     {
6305                         // Check to see if the DIE actually has a definition, some version of GCC will
6306                         // emit DIEs with DW_AT_declaration set to true, but yet still have subprogram,
6307                         // members, or inheritance, so we can't trust it
6308                         const DWARFDebugInfoEntry *child_die = die->GetFirstChild();
6309                         while (child_die)
6310                         {
6311                             switch (child_die->Tag())
6312                             {
6313                                 case DW_TAG_inheritance:
6314                                 case DW_TAG_subprogram:
6315                                 case DW_TAG_member:
6316                                 case DW_TAG_APPLE_property:
6317                                 case DW_TAG_class_type:
6318                                 case DW_TAG_structure_type:
6319                                 case DW_TAG_enumeration_type:
6320                                 case DW_TAG_typedef:
6321                                 case DW_TAG_union_type:
6322                                     child_die = NULL;
6323                                     is_forward_declaration = false;
6324                                     break;
6325                                 default:
6326                                     child_die = child_die->GetSibling();
6327                                     break;
6328                             }
6329                         }
6330                     }
6331
6332                     if (!is_forward_declaration)
6333                     {
6334                         // Always start the definition for a class type so that
6335                         // if the class has child classes or types that require
6336                         // the class to be created for use as their decl contexts
6337                         // the class will be ready to accept these child definitions.
6338                         if (die->HasChildren() == false)
6339                         {
6340                             // No children for this struct/union/class, lets finish it
6341                             clang_type.StartTagDeclarationDefinition ();
6342                             clang_type.CompleteTagDeclarationDefinition ();
6343
6344                             if (tag == DW_TAG_structure_type) // this only applies in C
6345                             {
6346                                 clang::RecordDecl *record_decl = clang_type.GetAsRecordDecl();
6347
6348                                 if (record_decl)
6349                                     m_record_decl_to_layout_map.insert(std::make_pair(record_decl, LayoutInfo()));
6350                             }
6351                         }
6352                         else if (clang_type_was_created)
6353                         {
6354                             // Start the definition if the class is not objective C since
6355                             // the underlying decls respond to isCompleteDefinition(). Objective
6356                             // C decls don't respond to isCompleteDefinition() so we can't
6357                             // start the declaration definition right away. For C++ class/union/structs
6358                             // we want to start the definition in case the class is needed as the
6359                             // declaration context for a contained class or type without the need
6360                             // to complete that type..
6361
6362                             if (class_language != eLanguageTypeObjC &&
6363                                 class_language != eLanguageTypeObjC_plus_plus)
6364                                 clang_type.StartTagDeclarationDefinition ();
6365
6366                             // Leave this as a forward declaration until we need
6367                             // to know the details of the type. lldb_private::Type
6368                             // will automatically call the SymbolFile virtual function
6369                             // "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition(Type *)"
6370                             // When the definition needs to be defined.
6371                             m_forward_decl_die_to_clang_type[die] = clang_type.GetOpaqueQualType();
6372                             m_forward_decl_clang_type_to_die[clang_type.RemoveFastQualifiers().GetOpaqueQualType()] = die;
6373                             clang_type.SetHasExternalStorage (true);
6374                         }
6375                     }
6376
6377                 }
6378                 break;
6379
6380             case DW_TAG_enumeration_type:
6381                 {
6382                     // Set a bit that lets us know that we are currently parsing this
6383                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
6384
6385                     lldb::user_id_t encoding_uid = DW_INVALID_OFFSET;
6386
6387                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
6388                     if (num_attributes > 0)
6389                     {
6390                         uint32_t i;
6391
6392                         for (i=0; i<num_attributes; ++i)
6393                         {
6394                             attr = attributes.AttributeAtIndex(i);
6395                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6396                             {
6397                                 switch (attr)
6398                                 {
6399                                 case DW_AT_decl_file:       decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6400                                 case DW_AT_decl_line:       decl.SetLine(form_value.Unsigned()); break;
6401                                 case DW_AT_decl_column:     decl.SetColumn(form_value.Unsigned()); break;
6402                                 case DW_AT_name:
6403                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
6404                                     type_name_const_str.SetCString(type_name_cstr);
6405                                     break;
6406                                 case DW_AT_type:            encoding_uid = form_value.Reference(dwarf_cu); break;
6407                                 case DW_AT_byte_size:       byte_size = form_value.Unsigned(); break;
6408                                 case DW_AT_accessibility:   break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6409                                 case DW_AT_declaration:     break; //is_forward_declaration = form_value.Boolean(); break;
6410                                 case DW_AT_allocated:
6411                                 case DW_AT_associated:
6412                                 case DW_AT_bit_stride:
6413                                 case DW_AT_byte_stride:
6414                                 case DW_AT_data_location:
6415                                 case DW_AT_description:
6416                                 case DW_AT_start_scope:
6417                                 case DW_AT_visibility:
6418                                 case DW_AT_specification:
6419                                 case DW_AT_abstract_origin:
6420                                 case DW_AT_sibling:
6421                                     break;
6422                                 }
6423                             }
6424                         }
6425
6426                         DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6427
6428                         ClangASTType enumerator_clang_type;
6429                         clang_type.SetClangType (ast.getASTContext(), m_forward_decl_die_to_clang_type.lookup (die));
6430                         if (!clang_type)
6431                         {
6432                             if (encoding_uid != DW_INVALID_OFFSET)
6433                             {
6434                                 Type *enumerator_type = ResolveTypeUID(encoding_uid);
6435                                 if (enumerator_type)
6436                                     enumerator_clang_type = enumerator_type->GetClangFullType();
6437                             }
6438
6439                             if (!enumerator_clang_type)
6440                                 enumerator_clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (NULL,
6441                                                                                                       DW_ATE_signed,
6442                                                                                                       byte_size * 8);
6443
6444                             clang_type = ast.CreateEnumerationType (type_name_cstr,
6445                                                                     GetClangDeclContextContainingDIE (dwarf_cu, die, NULL),
6446                                                                     decl,
6447                                                                     enumerator_clang_type);
6448                         }
6449                         else
6450                         {
6451                             enumerator_clang_type = clang_type.GetEnumerationIntegerType ();
6452                         }
6453
6454                         LinkDeclContextToDIE(clang_type.GetDeclContextForType(), die);
6455
6456                         type_sp.reset( new Type (MakeUserID(die->GetOffset()),
6457                                                  this,
6458                                                  type_name_const_str,
6459                                                  byte_size,
6460                                                  NULL,
6461                                                  encoding_uid,
6462                                                  Type::eEncodingIsUID,
6463                                                  &decl,
6464                                                  clang_type,
6465                                                  Type::eResolveStateForward));
6466
6467                         clang_type.StartTagDeclarationDefinition ();
6468                         if (die->HasChildren())
6469                         {
6470                             SymbolContext cu_sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
6471                             bool is_signed = false;
6472                             enumerator_clang_type.IsIntegerType(is_signed);
6473                             ParseChildEnumerators(cu_sc, clang_type, is_signed, type_sp->GetByteSize(), dwarf_cu, die);
6474                         }
6475                         clang_type.CompleteTagDeclarationDefinition ();
6476                     }
6477                 }
6478                 break;
6479
6480             case DW_TAG_inlined_subroutine:
6481             case DW_TAG_subprogram:
6482             case DW_TAG_subroutine_type:
6483                 {
6484                     // Set a bit that lets us know that we are currently parsing this
6485                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
6486
6487                     //const char *mangled = NULL;
6488                     dw_offset_t type_die_offset = DW_INVALID_OFFSET;
6489                     bool is_variadic = false;
6490                     bool is_inline = false;
6491                     bool is_static = false;
6492                     bool is_virtual = false;
6493                     bool is_explicit = false;
6494                     bool is_artificial = false;
6495                     dw_offset_t specification_die_offset = DW_INVALID_OFFSET;
6496                     dw_offset_t abstract_origin_die_offset = DW_INVALID_OFFSET;
6497                     dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET;
6498
6499                     unsigned type_quals = 0;
6500                     clang::StorageClass storage = clang::SC_None;//, Extern, Static, PrivateExtern
6501
6502
6503                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
6504                     if (num_attributes > 0)
6505                     {
6506                         uint32_t i;
6507                         for (i=0; i<num_attributes; ++i)
6508                         {
6509                             attr = attributes.AttributeAtIndex(i);
6510                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6511                             {
6512                                 switch (attr)
6513                                 {
6514                                 case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6515                                 case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
6516                                 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
6517                                 case DW_AT_name:
6518                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
6519                                     type_name_const_str.SetCString(type_name_cstr);
6520                                     break;
6521
6522                                 case DW_AT_linkage_name:
6523                                 case DW_AT_MIPS_linkage_name:   break; // mangled = form_value.AsCString(&get_debug_str_data()); break;
6524                                 case DW_AT_type:                type_die_offset = form_value.Reference(dwarf_cu); break;
6525                                 case DW_AT_accessibility:       accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6526                                 case DW_AT_declaration:         break; // is_forward_declaration = form_value.Boolean(); break;
6527                                 case DW_AT_inline:              is_inline = form_value.Boolean(); break;
6528                                 case DW_AT_virtuality:          is_virtual = form_value.Boolean();  break;
6529                                 case DW_AT_explicit:            is_explicit = form_value.Boolean();  break;
6530                                 case DW_AT_artificial:          is_artificial = form_value.Boolean();  break;
6531
6532
6533                                 case DW_AT_external:
6534                                     if (form_value.Unsigned())
6535                                     {
6536                                         if (storage == clang::SC_None)
6537                                             storage = clang::SC_Extern;
6538                                         else
6539                                             storage = clang::SC_PrivateExtern;
6540                                     }
6541                                     break;
6542
6543                                 case DW_AT_specification:
6544                                     specification_die_offset = form_value.Reference(dwarf_cu);
6545                                     break;
6546
6547                                 case DW_AT_abstract_origin:
6548                                     abstract_origin_die_offset = form_value.Reference(dwarf_cu);
6549                                     break;
6550
6551                                 case DW_AT_object_pointer:
6552                                     object_pointer_die_offset = form_value.Reference(dwarf_cu);
6553                                     break;
6554
6555                                 case DW_AT_allocated:
6556                                 case DW_AT_associated:
6557                                 case DW_AT_address_class:
6558                                 case DW_AT_calling_convention:
6559                                 case DW_AT_data_location:
6560                                 case DW_AT_elemental:
6561                                 case DW_AT_entry_pc:
6562                                 case DW_AT_frame_base:
6563                                 case DW_AT_high_pc:
6564                                 case DW_AT_low_pc:
6565                                 case DW_AT_prototyped:
6566                                 case DW_AT_pure:
6567                                 case DW_AT_ranges:
6568                                 case DW_AT_recursive:
6569                                 case DW_AT_return_addr:
6570                                 case DW_AT_segment:
6571                                 case DW_AT_start_scope:
6572                                 case DW_AT_static_link:
6573                                 case DW_AT_trampoline:
6574                                 case DW_AT_visibility:
6575                                 case DW_AT_vtable_elem_location:
6576                                 case DW_AT_description:
6577                                 case DW_AT_sibling:
6578                                     break;
6579                                 }
6580                             }
6581                         }
6582                     }
6583
6584                     std::string object_pointer_name;
6585                     if (object_pointer_die_offset != DW_INVALID_OFFSET)
6586                     {
6587                         // Get the name from the object pointer die
6588                         StreamString s;
6589                         if (DWARFDebugInfoEntry::GetName (this, dwarf_cu, object_pointer_die_offset, s))
6590                         {
6591                             object_pointer_name.assign(s.GetData());
6592                         }
6593                     }
6594
6595                     DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6596
6597                     ClangASTType return_clang_type;
6598                     Type *func_type = NULL;
6599
6600                     if (type_die_offset != DW_INVALID_OFFSET)
6601                         func_type = ResolveTypeUID(type_die_offset);
6602
6603                     if (func_type)
6604                         return_clang_type = func_type->GetClangForwardType();
6605                     else
6606                         return_clang_type = ast.GetBasicType(eBasicTypeVoid);
6607
6608
6609                     std::vector<ClangASTType> function_param_types;
6610                     std::vector<clang::ParmVarDecl*> function_param_decls;
6611
6612                     // Parse the function children for the parameters
6613
6614                     const DWARFDebugInfoEntry *decl_ctx_die = NULL;
6615                     clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die);
6616                     const clang::Decl::Kind containing_decl_kind = containing_decl_ctx->getDeclKind();
6617
6618                     const bool is_cxx_method = DeclKindIsCXXClass (containing_decl_kind);
6619                     // Start off static. This will be set to false in ParseChildParameters(...)
6620                     // if we find a "this" parameters as the first parameter
6621                     if (is_cxx_method)
6622                         is_static = true;
6623
6624                     if (die->HasChildren())
6625                     {
6626                         bool skip_artificial = true;
6627                         ParseChildParameters (sc,
6628                                               containing_decl_ctx,
6629                                               dwarf_cu,
6630                                               die,
6631                                               skip_artificial,
6632                                               is_static,
6633                                               is_variadic,
6634                                               type_list,
6635                                               function_param_types,
6636                                               function_param_decls,
6637                                               type_quals);
6638                     }
6639
6640                     // clang_type will get the function prototype clang type after this call
6641                     clang_type = ast.CreateFunctionType (return_clang_type,
6642                                                          function_param_types.data(),
6643                                                          function_param_types.size(),
6644                                                          is_variadic,
6645                                                          type_quals);
6646
6647                     bool ignore_containing_context = false;
6648
6649                     if (type_name_cstr)
6650                     {
6651                         bool type_handled = false;
6652                         if (tag == DW_TAG_subprogram)
6653                         {
6654                             ObjCLanguageRuntime::MethodName objc_method (type_name_cstr, true);
6655                             if (objc_method.IsValid(true))
6656                             {
6657                                 ClangASTType class_opaque_type;
6658                                 ConstString class_name(objc_method.GetClassName());
6659                                 if (class_name)
6660                                 {
6661                                     TypeSP complete_objc_class_type_sp (FindCompleteObjCDefinitionTypeForDIE (NULL, class_name, false));
6662
6663                                     if (complete_objc_class_type_sp)
6664                                     {
6665                                         ClangASTType type_clang_forward_type = complete_objc_class_type_sp->GetClangForwardType();
6666                                         if (type_clang_forward_type.IsObjCObjectOrInterfaceType ())
6667                                             class_opaque_type = type_clang_forward_type;
6668                                     }
6669                                 }
6670
6671                                 if (class_opaque_type)
6672                                 {
6673                                     // If accessibility isn't set to anything valid, assume public for
6674                                     // now...
6675                                     if (accessibility == eAccessNone)
6676                                         accessibility = eAccessPublic;
6677
6678                                     clang::ObjCMethodDecl *objc_method_decl = class_opaque_type.AddMethodToObjCObjectType (type_name_cstr,
6679                                                                                                                            clang_type,
6680                                                                                                                            accessibility,
6681                                                                                                                            is_artificial);
6682                                     type_handled = objc_method_decl != NULL;
6683                                     if (type_handled)
6684                                     {
6685                                         LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(objc_method_decl), die);
6686                                         GetClangASTContext().SetMetadataAsUserID (objc_method_decl, MakeUserID(die->GetOffset()));
6687                                     }
6688                                     else
6689                                     {
6690                                         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",
6691                                                                                    die->GetOffset(),
6692                                                                                    tag,
6693                                                                                    DW_TAG_value_to_name(tag));
6694                                     }
6695                                 }
6696                             }
6697                             else if (is_cxx_method)
6698                             {
6699                                 // Look at the parent of this DIE and see if is is
6700                                 // a class or struct and see if this is actually a
6701                                 // C++ method
6702                                 Type *class_type = ResolveType (dwarf_cu, decl_ctx_die);
6703                                 if (class_type)
6704                                 {
6705                                     if (class_type->GetID() != MakeUserID(decl_ctx_die->GetOffset()))
6706                                     {
6707                                         // We uniqued the parent class of this function to another class
6708                                         // so we now need to associate all dies under "decl_ctx_die" to
6709                                         // DIEs in the DIE for "class_type"...
6710                                         SymbolFileDWARF *class_symfile = NULL;
6711                                         DWARFCompileUnitSP class_type_cu_sp;
6712                                         const DWARFDebugInfoEntry *class_type_die = NULL;
6713
6714                                         SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile();
6715                                         if (debug_map_symfile)
6716                                         {
6717                                             class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex(SymbolFileDWARFDebugMap::GetOSOIndexFromUserID(class_type->GetID()));
6718                                             class_type_die = class_symfile->DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp);
6719                                         }
6720                                         else
6721                                         {
6722                                             class_symfile = this;
6723                                             class_type_die = DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp);
6724                                         }
6725                                         if (class_type_die)
6726                                         {
6727                                             DWARFDIECollection failures;
6728
6729                                             CopyUniqueClassMethodTypes (class_symfile,
6730                                                                         class_type,
6731                                                                         class_type_cu_sp.get(),
6732                                                                         class_type_die,
6733                                                                         dwarf_cu,
6734                                                                         decl_ctx_die,
6735                                                                         failures);
6736
6737                                             // FIXME do something with these failures that's smarter than
6738                                             // just dropping them on the ground.  Unfortunately classes don't
6739                                             // like having stuff added to them after their definitions are
6740                                             // complete...
6741
6742                                             type_ptr = m_die_to_type[die];
6743                                             if (type_ptr && type_ptr != DIE_IS_BEING_PARSED)
6744                                             {
6745                                                 type_sp = type_ptr->shared_from_this();
6746                                                 break;
6747                                             }
6748                                         }
6749                                     }
6750
6751                                     if (specification_die_offset != DW_INVALID_OFFSET)
6752                                     {
6753                                         // We have a specification which we are going to base our function
6754                                         // prototype off of, so we need this type to be completed so that the
6755                                         // m_die_to_decl_ctx for the method in the specification has a valid
6756                                         // clang decl context.
6757                                         class_type->GetClangForwardType();
6758                                         // If we have a specification, then the function type should have been
6759                                         // made with the specification and not with this die.
6760                                         DWARFCompileUnitSP spec_cu_sp;
6761                                         const DWARFDebugInfoEntry* spec_die = DebugInfo()->GetDIEPtr(specification_die_offset, &spec_cu_sp);
6762                                         clang::DeclContext *spec_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, spec_die);
6763                                         if (spec_clang_decl_ctx)
6764                                         {
6765                                             LinkDeclContextToDIE(spec_clang_decl_ctx, die);
6766                                         }
6767                                         else
6768                                         {
6769                                             GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_specification(0x%8.8x) has no decl\n",
6770                                                                                          MakeUserID(die->GetOffset()),
6771                                                                                          specification_die_offset);
6772                                         }
6773                                         type_handled = true;
6774                                     }
6775                                     else if (abstract_origin_die_offset != DW_INVALID_OFFSET)
6776                                     {
6777                                         // We have a specification which we are going to base our function
6778                                         // prototype off of, so we need this type to be completed so that the
6779                                         // m_die_to_decl_ctx for the method in the abstract origin has a valid
6780                                         // clang decl context.
6781                                         class_type->GetClangForwardType();
6782
6783                                         DWARFCompileUnitSP abs_cu_sp;
6784                                         const DWARFDebugInfoEntry* abs_die = DebugInfo()->GetDIEPtr(abstract_origin_die_offset, &abs_cu_sp);
6785                                         clang::DeclContext *abs_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, abs_die);
6786                                         if (abs_clang_decl_ctx)
6787                                         {
6788                                             LinkDeclContextToDIE (abs_clang_decl_ctx, die);
6789                                         }
6790                                         else
6791                                         {
6792                                             GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_abstract_origin(0x%8.8x) has no decl\n",
6793                                                                                          MakeUserID(die->GetOffset()),
6794                                                                                          abstract_origin_die_offset);
6795                                         }
6796                                         type_handled = true;
6797                                     }
6798                                     else
6799                                     {
6800                                         ClangASTType class_opaque_type = class_type->GetClangForwardType();
6801                                         if (class_opaque_type.IsCXXClassType ())
6802                                         {
6803                                             if (class_opaque_type.IsBeingDefined ())
6804                                             {
6805                                                 // Neither GCC 4.2 nor clang++ currently set a valid accessibility
6806                                                 // in the DWARF for C++ methods... Default to public for now...
6807                                                 if (accessibility == eAccessNone)
6808                                                     accessibility = eAccessPublic;
6809
6810                                                 if (!is_static && !die->HasChildren())
6811                                                 {
6812                                                     // We have a C++ member function with no children (this pointer!)
6813                                                     // and clang will get mad if we try and make a function that isn't
6814                                                     // well formed in the DWARF, so we will just skip it...
6815                                                     type_handled = true;
6816                                                 }
6817                                                 else
6818                                                 {
6819                                                     clang::CXXMethodDecl *cxx_method_decl;
6820                                                     // REMOVE THE CRASH DESCRIPTION BELOW
6821                                                     Host::SetCrashDescriptionWithFormat ("SymbolFileDWARF::ParseType() is adding a method %s to class %s in DIE 0x%8.8" PRIx64 " from %s",
6822                                                                                          type_name_cstr,
6823                                                                                          class_type->GetName().GetCString(),
6824                                                                                          MakeUserID(die->GetOffset()),
6825                                                                                          m_obj_file->GetFileSpec().GetPath().c_str());
6826
6827                                                     const bool is_attr_used = false;
6828
6829                                                     cxx_method_decl = class_opaque_type.AddMethodToCXXRecordType (type_name_cstr,
6830                                                                                                                   clang_type,
6831                                                                                                                   accessibility,
6832                                                                                                                   is_virtual,
6833                                                                                                                   is_static,
6834                                                                                                                   is_inline,
6835                                                                                                                   is_explicit,
6836                                                                                                                   is_attr_used,
6837                                                                                                                   is_artificial);
6838
6839                                                     type_handled = cxx_method_decl != NULL;
6840
6841                                                     if (type_handled)
6842                                                     {
6843                                                         LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(cxx_method_decl), die);
6844
6845                                                         Host::SetCrashDescription (NULL);
6846
6847
6848                                                         ClangASTMetadata metadata;
6849                                                         metadata.SetUserID(MakeUserID(die->GetOffset()));
6850
6851                                                         if (!object_pointer_name.empty())
6852                                                         {
6853                                                             metadata.SetObjectPtrName(object_pointer_name.c_str());
6854                                                             if (log)
6855                                                                 log->Printf ("Setting object pointer name: %s on method object %p.\n",
6856                                                                              object_pointer_name.c_str(),
6857                                                                              static_cast<void*>(cxx_method_decl));
6858                                                         }
6859                                                         GetClangASTContext().SetMetadata (cxx_method_decl, metadata);
6860                                                     }
6861                                                     else
6862                                                     {
6863                                                         ignore_containing_context = true;
6864                                                     }
6865                                                 }
6866                                             }
6867                                             else
6868                                             {
6869                                                 // We were asked to parse the type for a method in a class, yet the
6870                                                 // class hasn't been asked to complete itself through the
6871                                                 // clang::ExternalASTSource protocol, so we need to just have the
6872                                                 // class complete itself and do things the right way, then our
6873                                                 // DIE should then have an entry in the m_die_to_type map. First
6874                                                 // we need to modify the m_die_to_type so it doesn't think we are
6875                                                 // trying to parse this DIE anymore...
6876                                                 m_die_to_type[die] = NULL;
6877
6878                                                 // Now we get the full type to force our class type to complete itself
6879                                                 // using the clang::ExternalASTSource protocol which will parse all
6880                                                 // base classes and all methods (including the method for this DIE).
6881                                                 class_type->GetClangFullType();
6882
6883                                                 // The type for this DIE should have been filled in the function call above
6884                                                 type_ptr = m_die_to_type[die];
6885                                                 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED)
6886                                                 {
6887                                                     type_sp = type_ptr->shared_from_this();
6888                                                     break;
6889                                                 }
6890
6891                                                 // FIXME This is fixing some even uglier behavior but we really need to
6892                                                 // uniq the methods of each class as well as the class itself.
6893                                                 // <rdar://problem/11240464>
6894                                                 type_handled = true;
6895                                             }
6896                                         }
6897                                     }
6898                                 }
6899                             }
6900                         }
6901
6902                         if (!type_handled)
6903                         {
6904                             // We just have a function that isn't part of a class
6905                             clang::FunctionDecl *function_decl = ast.CreateFunctionDeclaration (ignore_containing_context ? GetClangASTContext().GetTranslationUnitDecl() : containing_decl_ctx,
6906                                                                                                 type_name_cstr,
6907                                                                                                 clang_type,
6908                                                                                                 storage,
6909                                                                                                 is_inline);
6910
6911 //                            if (template_param_infos.GetSize() > 0)
6912 //                            {
6913 //                                clang::FunctionTemplateDecl *func_template_decl = ast.CreateFunctionTemplateDecl (containing_decl_ctx,
6914 //                                                                                                                  function_decl,
6915 //                                                                                                                  type_name_cstr,
6916 //                                                                                                                  template_param_infos);
6917 //
6918 //                                ast.CreateFunctionTemplateSpecializationInfo (function_decl,
6919 //                                                                              func_template_decl,
6920 //                                                                              template_param_infos);
6921 //                            }
6922                             // Add the decl to our DIE to decl context map
6923                             assert (function_decl);
6924                             LinkDeclContextToDIE(function_decl, die);
6925                             if (!function_param_decls.empty())
6926                                 ast.SetFunctionParameters (function_decl,
6927                                                            &function_param_decls.front(),
6928                                                            function_param_decls.size());
6929
6930                             ClangASTMetadata metadata;
6931                             metadata.SetUserID(MakeUserID(die->GetOffset()));
6932
6933                             if (!object_pointer_name.empty())
6934                             {
6935                                 metadata.SetObjectPtrName(object_pointer_name.c_str());
6936                                 if (log)
6937                                     log->Printf ("Setting object pointer name: %s on function object %p.",
6938                                                  object_pointer_name.c_str(),
6939                                                  static_cast<void*>(function_decl));
6940                             }
6941                             GetClangASTContext().SetMetadata (function_decl, metadata);
6942                         }
6943                     }
6944                     type_sp.reset( new Type (MakeUserID(die->GetOffset()),
6945                                              this,
6946                                              type_name_const_str,
6947                                              0,
6948                                              NULL,
6949                                              LLDB_INVALID_UID,
6950                                              Type::eEncodingIsUID,
6951                                              &decl,
6952                                              clang_type,
6953                                              Type::eResolveStateFull));
6954                     assert(type_sp.get());
6955                 }
6956                 break;
6957
6958             case DW_TAG_array_type:
6959                 {
6960                     // Set a bit that lets us know that we are currently parsing this
6961                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
6962
6963                     lldb::user_id_t type_die_offset = DW_INVALID_OFFSET;
6964                     int64_t first_index = 0;
6965                     uint32_t byte_stride = 0;
6966                     uint32_t bit_stride = 0;
6967                     bool is_vector = false;
6968                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
6969
6970                     if (num_attributes > 0)
6971                     {
6972                         uint32_t i;
6973                         for (i=0; i<num_attributes; ++i)
6974                         {
6975                             attr = attributes.AttributeAtIndex(i);
6976                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6977                             {
6978                                 switch (attr)
6979                                 {
6980                                 case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6981                                 case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
6982                                 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
6983                                 case DW_AT_name:
6984                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
6985                                     type_name_const_str.SetCString(type_name_cstr);
6986                                     break;
6987
6988                                 case DW_AT_type:            type_die_offset = form_value.Reference(dwarf_cu); break;
6989                                 case DW_AT_byte_size:       break; // byte_size = form_value.Unsigned(); break;
6990                                 case DW_AT_byte_stride:     byte_stride = form_value.Unsigned(); break;
6991                                 case DW_AT_bit_stride:      bit_stride = form_value.Unsigned(); break;
6992                                 case DW_AT_GNU_vector:      is_vector = form_value.Boolean(); break;
6993                                 case DW_AT_accessibility:   break; // accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6994                                 case DW_AT_declaration:     break; // is_forward_declaration = form_value.Boolean(); break;
6995                                 case DW_AT_allocated:
6996                                 case DW_AT_associated:
6997                                 case DW_AT_data_location:
6998                                 case DW_AT_description:
6999                                 case DW_AT_ordering:
7000                                 case DW_AT_start_scope:
7001                                 case DW_AT_visibility:
7002                                 case DW_AT_specification:
7003                                 case DW_AT_abstract_origin:
7004                                 case DW_AT_sibling:
7005                                     break;
7006                                 }
7007                             }
7008                         }
7009
7010                         DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
7011
7012                         Type *element_type = ResolveTypeUID(type_die_offset);
7013
7014                         if (element_type)
7015                         {
7016                             std::vector<uint64_t> element_orders;
7017                             ParseChildArrayInfo(sc, dwarf_cu, die, first_index, element_orders, byte_stride, bit_stride);
7018                             if (byte_stride == 0 && bit_stride == 0)
7019                                 byte_stride = element_type->GetByteSize();
7020                             ClangASTType array_element_type = element_type->GetClangForwardType();
7021                             uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride;
7022                             uint64_t num_elements = 0;
7023                             std::vector<uint64_t>::const_reverse_iterator pos;
7024                             std::vector<uint64_t>::const_reverse_iterator end = element_orders.rend();
7025                             for (pos = element_orders.rbegin(); pos != end; ++pos)
7026                             {
7027                                 num_elements = *pos;
7028                                 clang_type = ast.CreateArrayType (array_element_type,
7029                                                                   num_elements,
7030                                                                   is_vector);
7031                                 array_element_type = clang_type;
7032                                 array_element_bit_stride = num_elements ? array_element_bit_stride * num_elements : array_element_bit_stride;
7033                             }
7034                             ConstString empty_name;
7035                             type_sp.reset( new Type (MakeUserID(die->GetOffset()),
7036                                                      this,
7037                                                      empty_name,
7038                                                      array_element_bit_stride / 8,
7039                                                      NULL,
7040                                                      type_die_offset,
7041                                                      Type::eEncodingIsUID,
7042                                                      &decl,
7043                                                      clang_type,
7044                                                      Type::eResolveStateFull));
7045                             type_sp->SetEncodingType (element_type);
7046                         }
7047                     }
7048                 }
7049                 break;
7050
7051             case DW_TAG_ptr_to_member_type:
7052                 {
7053                     dw_offset_t type_die_offset = DW_INVALID_OFFSET;
7054                     dw_offset_t containing_type_die_offset = DW_INVALID_OFFSET;
7055
7056                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
7057
7058                     if (num_attributes > 0) {
7059                         uint32_t i;
7060                         for (i=0; i<num_attributes; ++i)
7061                         {
7062                             attr = attributes.AttributeAtIndex(i);
7063                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
7064                             {
7065                                 switch (attr)
7066                                 {
7067                                     case DW_AT_type:
7068                                         type_die_offset = form_value.Reference(dwarf_cu); break;
7069                                     case DW_AT_containing_type:
7070                                         containing_type_die_offset = form_value.Reference(dwarf_cu); break;
7071                                 }
7072                             }
7073                         }
7074
7075                         Type *pointee_type = ResolveTypeUID(type_die_offset);
7076                         Type *class_type = ResolveTypeUID(containing_type_die_offset);
7077
7078                         ClangASTType pointee_clang_type = pointee_type->GetClangForwardType();
7079                         ClangASTType class_clang_type = class_type->GetClangLayoutType();
7080
7081                         clang_type = pointee_clang_type.CreateMemberPointerType(class_clang_type);
7082
7083                         byte_size = clang_type.GetByteSize();
7084
7085                         type_sp.reset( new Type (MakeUserID(die->GetOffset()),
7086                                                  this,
7087                                                  type_name_const_str,
7088                                                  byte_size,
7089                                                  NULL,
7090                                                  LLDB_INVALID_UID,
7091                                                  Type::eEncodingIsUID,
7092                                                  NULL,
7093                                                  clang_type,
7094                                                  Type::eResolveStateForward));
7095                     }
7096
7097                     break;
7098                 }
7099             default:
7100                 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",
7101                                                            die->GetOffset(),
7102                                                            tag,
7103                                                            DW_TAG_value_to_name(tag));
7104                 break;
7105             }
7106
7107             if (type_sp.get())
7108             {
7109                 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die);
7110                 dw_tag_t sc_parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
7111
7112                 SymbolContextScope * symbol_context_scope = NULL;
7113                 if (sc_parent_tag == DW_TAG_compile_unit)
7114                 {
7115                     symbol_context_scope = sc.comp_unit;
7116                 }
7117                 else if (sc.function != NULL)
7118                 {
7119                     symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
7120                     if (symbol_context_scope == NULL)
7121                         symbol_context_scope = sc.function;
7122                 }
7123
7124                 if (symbol_context_scope != NULL)
7125                 {
7126                     type_sp->SetSymbolContextScope(symbol_context_scope);
7127                 }
7128
7129                 // We are ready to put this type into the uniqued list up at the module level
7130                 type_list->Insert (type_sp);
7131
7132                 m_die_to_type[die] = type_sp.get();
7133             }
7134         }
7135         else if (type_ptr != DIE_IS_BEING_PARSED)
7136         {
7137             type_sp = type_ptr->shared_from_this();
7138         }
7139     }
7140     return type_sp;
7141 }
7142
7143 size_t
7144 SymbolFileDWARF::ParseTypes
7145 (
7146     const SymbolContext& sc,
7147     DWARFCompileUnit* dwarf_cu,
7148     const DWARFDebugInfoEntry *die,
7149     bool parse_siblings,
7150     bool parse_children
7151 )
7152 {
7153     size_t types_added = 0;
7154     while (die != NULL)
7155     {
7156         bool type_is_new = false;
7157         if (ParseType(sc, dwarf_cu, die, &type_is_new).get())
7158         {
7159             if (type_is_new)
7160                 ++types_added;
7161         }
7162
7163         if (parse_children && die->HasChildren())
7164         {
7165             if (die->Tag() == DW_TAG_subprogram)
7166             {
7167                 SymbolContext child_sc(sc);
7168                 child_sc.function = sc.comp_unit->FindFunctionByUID(MakeUserID(die->GetOffset())).get();
7169                 types_added += ParseTypes(child_sc, dwarf_cu, die->GetFirstChild(), true, true);
7170             }
7171             else
7172                 types_added += ParseTypes(sc, dwarf_cu, die->GetFirstChild(), true, true);
7173         }
7174
7175         if (parse_siblings)
7176             die = die->GetSibling();
7177         else
7178             die = NULL;
7179     }
7180     return types_added;
7181 }
7182
7183
7184 size_t
7185 SymbolFileDWARF::ParseFunctionBlocks (const SymbolContext &sc)
7186 {
7187     assert(sc.comp_unit && sc.function);
7188     size_t functions_added = 0;
7189     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
7190     if (dwarf_cu)
7191     {
7192         dw_offset_t function_die_offset = sc.function->GetID();
7193         const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(function_die_offset);
7194         if (function_die)
7195         {
7196             ParseFunctionBlocks(sc, &sc.function->GetBlock (false), dwarf_cu, function_die, LLDB_INVALID_ADDRESS, 0);
7197         }
7198     }
7199
7200     return functions_added;
7201 }
7202
7203
7204 size_t
7205 SymbolFileDWARF::ParseTypes (const SymbolContext &sc)
7206 {
7207     // At least a compile unit must be valid
7208     assert(sc.comp_unit);
7209     size_t types_added = 0;
7210     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
7211     if (dwarf_cu)
7212     {
7213         if (sc.function)
7214         {
7215             dw_offset_t function_die_offset = sc.function->GetID();
7216             const DWARFDebugInfoEntry *func_die = dwarf_cu->GetDIEPtr(function_die_offset);
7217             if (func_die && func_die->HasChildren())
7218             {
7219                 types_added = ParseTypes(sc, dwarf_cu, func_die->GetFirstChild(), true, true);
7220             }
7221         }
7222         else
7223         {
7224             const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->DIE();
7225             if (dwarf_cu_die && dwarf_cu_die->HasChildren())
7226             {
7227                 types_added = ParseTypes(sc, dwarf_cu, dwarf_cu_die->GetFirstChild(), true, true);
7228             }
7229         }
7230     }
7231
7232     return types_added;
7233 }
7234
7235 size_t
7236 SymbolFileDWARF::ParseVariablesForContext (const SymbolContext& sc)
7237 {
7238     if (sc.comp_unit != NULL)
7239     {
7240         DWARFDebugInfo* info = DebugInfo();
7241         if (info == NULL)
7242             return 0;
7243
7244         if (sc.function)
7245         {
7246             DWARFCompileUnit* dwarf_cu = info->GetCompileUnitContainingDIE(sc.function->GetID()).get();
7247
7248             if (dwarf_cu == NULL)
7249                 return 0;
7250
7251             const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(sc.function->GetID());
7252
7253             dw_addr_t func_lo_pc = function_die->GetAttributeValueAsUnsigned (this, dwarf_cu, DW_AT_low_pc, LLDB_INVALID_ADDRESS);
7254             if (func_lo_pc != LLDB_INVALID_ADDRESS)
7255             {
7256                 const size_t num_variables = ParseVariables(sc, dwarf_cu, func_lo_pc, function_die->GetFirstChild(), true, true);
7257
7258                 // Let all blocks know they have parse all their variables
7259                 sc.function->GetBlock (false).SetDidParseVariables (true, true);
7260                 return num_variables;
7261             }
7262         }
7263         else if (sc.comp_unit)
7264         {
7265             DWARFCompileUnit* dwarf_cu = info->GetCompileUnit(sc.comp_unit->GetID()).get();
7266
7267             if (dwarf_cu == NULL)
7268                 return 0;
7269
7270             uint32_t vars_added = 0;
7271             VariableListSP variables (sc.comp_unit->GetVariableList(false));
7272
7273             if (variables.get() == NULL)
7274             {
7275                 variables.reset(new VariableList());
7276                 sc.comp_unit->SetVariableList(variables);
7277
7278                 DWARFCompileUnit* match_dwarf_cu = NULL;
7279                 const DWARFDebugInfoEntry* die = NULL;
7280                 DIEArray die_offsets;
7281                 if (m_using_apple_tables)
7282                 {
7283                     if (m_apple_names_ap.get())
7284                     {
7285                         DWARFMappedHash::DIEInfoArray hash_data_array;
7286                         if (m_apple_names_ap->AppendAllDIEsInRange (dwarf_cu->GetOffset(),
7287                                                                     dwarf_cu->GetNextCompileUnitOffset(),
7288                                                                     hash_data_array))
7289                         {
7290                             DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
7291                         }
7292                     }
7293                 }
7294                 else
7295                 {
7296                     // Index if we already haven't to make sure the compile units
7297                     // get indexed and make their global DIE index list
7298                     if (!m_indexed)
7299                         Index ();
7300
7301                     m_global_index.FindAllEntriesForCompileUnit (dwarf_cu->GetOffset(),
7302                                                                  dwarf_cu->GetNextCompileUnitOffset(),
7303                                                                  die_offsets);
7304                 }
7305
7306                 const size_t num_matches = die_offsets.size();
7307                 if (num_matches)
7308                 {
7309                     DWARFDebugInfo* debug_info = DebugInfo();
7310                     for (size_t i=0; i<num_matches; ++i)
7311                     {
7312                         const dw_offset_t die_offset = die_offsets[i];
7313                         die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &match_dwarf_cu);
7314                         if (die)
7315                         {
7316                             VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, LLDB_INVALID_ADDRESS));
7317                             if (var_sp)
7318                             {
7319                                 variables->AddVariableIfUnique (var_sp);
7320                                 ++vars_added;
7321                             }
7322                         }
7323                         else
7324                         {
7325                             if (m_using_apple_tables)
7326                             {
7327                                 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x)\n", die_offset);
7328                             }
7329                         }
7330
7331                     }
7332                 }
7333             }
7334             return vars_added;
7335         }
7336     }
7337     return 0;
7338 }
7339
7340
7341 VariableSP
7342 SymbolFileDWARF::ParseVariableDIE
7343 (
7344     const SymbolContext& sc,
7345     DWARFCompileUnit* dwarf_cu,
7346     const DWARFDebugInfoEntry *die,
7347     const lldb::addr_t func_low_pc
7348 )
7349 {
7350
7351     VariableSP var_sp (m_die_to_variable_sp[die]);
7352     if (var_sp)
7353         return var_sp;  // Already been parsed!
7354
7355     const dw_tag_t tag = die->Tag();
7356     ModuleSP module = GetObjectFile()->GetModule();
7357
7358     if ((tag == DW_TAG_variable) ||
7359         (tag == DW_TAG_constant) ||
7360         (tag == DW_TAG_formal_parameter && sc.function))
7361     {
7362         DWARFDebugInfoEntry::Attributes attributes;
7363         const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
7364         if (num_attributes > 0)
7365         {
7366             const char *name = NULL;
7367             const char *mangled = NULL;
7368             Declaration decl;
7369             uint32_t i;
7370             lldb::user_id_t type_uid = LLDB_INVALID_UID;
7371             DWARFExpression location;
7372             bool is_external = false;
7373             bool is_artificial = false;
7374             bool location_is_const_value_data = false;
7375             bool has_explicit_location = false;
7376             DWARFFormValue const_value;
7377             //AccessType accessibility = eAccessNone;
7378
7379             for (i=0; i<num_attributes; ++i)
7380             {
7381                 dw_attr_t attr = attributes.AttributeAtIndex(i);
7382                 DWARFFormValue form_value;
7383                 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
7384                 {
7385                     switch (attr)
7386                     {
7387                     case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
7388                     case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
7389                     case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
7390                     case DW_AT_name:        name = form_value.AsCString(&get_debug_str_data()); break;
7391                     case DW_AT_linkage_name:
7392                     case DW_AT_MIPS_linkage_name: mangled = form_value.AsCString(&get_debug_str_data()); break;
7393                     case DW_AT_type:        type_uid = form_value.Reference(dwarf_cu); break;
7394                     case DW_AT_external:    is_external = form_value.Boolean(); break;
7395                     case DW_AT_const_value:
7396                         // If we have already found a DW_AT_location attribute, ignore this attribute.
7397                         if (!has_explicit_location)
7398                         {
7399                             location_is_const_value_data = true;
7400                             // The constant value will be either a block, a data value or a string.
7401                             const DWARFDataExtractor& debug_info_data = get_debug_info_data();
7402                             if (DWARFFormValue::IsBlockForm(form_value.Form()))
7403                             {
7404                                 // Retrieve the value as a block expression.
7405                                 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
7406                                 uint32_t block_length = form_value.Unsigned();
7407                                 location.CopyOpcodeData(module, debug_info_data, block_offset, block_length);
7408                             }
7409                             else if (DWARFFormValue::IsDataForm(form_value.Form()))
7410                             {
7411                                 // Retrieve the value as a data expression.
7412                                 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
7413                                 uint32_t data_offset = attributes.DIEOffsetAtIndex(i);
7414                                 uint32_t data_length = fixed_form_sizes[form_value.Form()];
7415                                 if (data_length == 0)
7416                                 {
7417                                     const uint8_t *data_pointer = form_value.BlockData();
7418                                     if (data_pointer)
7419                                     {
7420                                         data_length = form_value.Unsigned();
7421                                     }
7422                                     else if (DWARFFormValue::IsDataForm(form_value.Form()))
7423                                     {
7424                                         // we need to get the byte size of the type later after we create the variable
7425                                         const_value = form_value;
7426                                     }
7427                                 }
7428                                 else
7429                                     location.CopyOpcodeData(module, debug_info_data, data_offset, data_length);
7430                             }
7431                             else
7432                             {
7433                                 // Retrieve the value as a string expression.
7434                                 if (form_value.Form() == DW_FORM_strp)
7435                                 {
7436                                     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
7437                                     uint32_t data_offset = attributes.DIEOffsetAtIndex(i);
7438                                     uint32_t data_length = fixed_form_sizes[form_value.Form()];
7439                                     location.CopyOpcodeData(module, debug_info_data, data_offset, data_length);
7440                                 }
7441                                 else
7442                                 {
7443                                     const char *str = form_value.AsCString(&debug_info_data);
7444                                     uint32_t string_offset = str - (const char *)debug_info_data.GetDataStart();
7445                                     uint32_t string_length = strlen(str) + 1;
7446                                     location.CopyOpcodeData(module, debug_info_data, string_offset, string_length);
7447                                 }
7448                             }
7449                         }
7450                         break;
7451                     case DW_AT_location:
7452                         {
7453                             location_is_const_value_data = false;
7454                             has_explicit_location = true;
7455                             if (form_value.BlockData())
7456                             {
7457                                 const DWARFDataExtractor& debug_info_data = get_debug_info_data();
7458
7459                                 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
7460                                 uint32_t block_length = form_value.Unsigned();
7461                                 location.CopyOpcodeData(module, get_debug_info_data(), block_offset, block_length);
7462                             }
7463                             else
7464                             {
7465                                 const DWARFDataExtractor&    debug_loc_data = get_debug_loc_data();
7466                                 const dw_offset_t debug_loc_offset = form_value.Unsigned();
7467
7468                                 size_t loc_list_length = DWARFLocationList::Size(debug_loc_data, debug_loc_offset);
7469                                 if (loc_list_length > 0)
7470                                 {
7471                                     location.CopyOpcodeData(module, debug_loc_data, debug_loc_offset, loc_list_length);
7472                                     assert (func_low_pc != LLDB_INVALID_ADDRESS);
7473                                     location.SetLocationListSlide (func_low_pc - dwarf_cu->GetBaseAddress());
7474                                 }
7475                             }
7476                         }
7477                         break;
7478
7479                     case DW_AT_artificial:      is_artificial = form_value.Boolean(); break;
7480                     case DW_AT_accessibility:   break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
7481                     case DW_AT_declaration:
7482                     case DW_AT_description:
7483                     case DW_AT_endianity:
7484                     case DW_AT_segment:
7485                     case DW_AT_start_scope:
7486                     case DW_AT_visibility:
7487                     default:
7488                     case DW_AT_abstract_origin:
7489                     case DW_AT_sibling:
7490                     case DW_AT_specification:
7491                         break;
7492                     }
7493                 }
7494             }
7495
7496             ValueType scope = eValueTypeInvalid;
7497
7498             const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die);
7499             dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
7500             SymbolContextScope * symbol_context_scope = NULL;
7501
7502             // DWARF doesn't specify if a DW_TAG_variable is a local, global
7503             // or static variable, so we have to do a little digging by
7504             // looking at the location of a variable to see if it contains
7505             // a DW_OP_addr opcode _somewhere_ in the definition. I say
7506             // somewhere because clang likes to combine small global variables
7507             // into the same symbol and have locations like:
7508             // DW_OP_addr(0x1000), DW_OP_constu(2), DW_OP_plus
7509             // So if we don't have a DW_TAG_formal_parameter, we can look at
7510             // the location to see if it contains a DW_OP_addr opcode, and
7511             // then we can correctly classify  our variables.
7512             if (tag == DW_TAG_formal_parameter)
7513                 scope = eValueTypeVariableArgument;
7514             else
7515             {
7516                 bool op_error = false;
7517                 // Check if the location has a DW_OP_addr with any address value...
7518                 lldb::addr_t location_DW_OP_addr = LLDB_INVALID_ADDRESS;
7519                 if (!location_is_const_value_data)
7520                 {
7521                     location_DW_OP_addr = location.GetLocation_DW_OP_addr (0, op_error);
7522                     if (op_error)
7523                     {
7524                         StreamString strm;
7525                         location.DumpLocationForAddress (&strm, eDescriptionLevelFull, 0, 0, NULL);
7526                         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());
7527                     }
7528                 }
7529
7530                 if (location_DW_OP_addr != LLDB_INVALID_ADDRESS)
7531                 {
7532                     if (is_external)
7533                         scope = eValueTypeVariableGlobal;
7534                     else
7535                         scope = eValueTypeVariableStatic;
7536
7537
7538                     SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile ();
7539
7540                     if (debug_map_symfile)
7541                     {
7542                         // When leaving the DWARF in the .o files on darwin,
7543                         // when we have a global variable that wasn't initialized,
7544                         // the .o file might not have allocated a virtual
7545                         // address for the global variable. In this case it will
7546                         // have created a symbol for the global variable
7547                         // that is undefined/data and external and the value will
7548                         // be the byte size of the variable. When we do the
7549                         // address map in SymbolFileDWARFDebugMap we rely on
7550                         // having an address, we need to do some magic here
7551                         // so we can get the correct address for our global
7552                         // variable. The address for all of these entries
7553                         // will be zero, and there will be an undefined symbol
7554                         // in this object file, and the executable will have
7555                         // a matching symbol with a good address. So here we
7556                         // dig up the correct address and replace it in the
7557                         // location for the variable, and set the variable's
7558                         // symbol context scope to be that of the main executable
7559                         // so the file address will resolve correctly.
7560                         bool linked_oso_file_addr = false;
7561                         if (is_external && location_DW_OP_addr == 0)
7562                         {
7563                             // we have a possible uninitialized extern global
7564                             ConstString const_name(mangled ? mangled : name);
7565                             ObjectFile *debug_map_objfile = debug_map_symfile->GetObjectFile();
7566                             if (debug_map_objfile)
7567                             {
7568                                 Symtab *debug_map_symtab = debug_map_objfile->GetSymtab();
7569                                 if (debug_map_symtab)
7570                                 {
7571                                     Symbol *exe_symbol = debug_map_symtab->FindFirstSymbolWithNameAndType (const_name,
7572                                                                                                            eSymbolTypeData,
7573                                                                                                            Symtab::eDebugYes,
7574                                                                                                            Symtab::eVisibilityExtern);
7575                                     if (exe_symbol)
7576                                     {
7577                                         if (exe_symbol->ValueIsAddress())
7578                                         {
7579                                             const addr_t exe_file_addr = exe_symbol->GetAddress().GetFileAddress();
7580                                             if (exe_file_addr != LLDB_INVALID_ADDRESS)
7581                                             {
7582                                                 if (location.Update_DW_OP_addr (exe_file_addr))
7583                                                 {
7584                                                     linked_oso_file_addr = true;
7585                                                     symbol_context_scope = exe_symbol;
7586                                                 }
7587                                             }
7588                                         }
7589                                     }
7590                                 }
7591                             }
7592                         }
7593
7594                         if (!linked_oso_file_addr)
7595                         {
7596                             // The DW_OP_addr is not zero, but it contains a .o file address which
7597                             // needs to be linked up correctly.
7598                             const lldb::addr_t exe_file_addr = debug_map_symfile->LinkOSOFileAddress(this, location_DW_OP_addr);
7599                             if (exe_file_addr != LLDB_INVALID_ADDRESS)
7600                             {
7601                                 // Update the file address for this variable
7602                                 location.Update_DW_OP_addr (exe_file_addr);
7603                             }
7604                             else
7605                             {
7606                                 // Variable didn't make it into the final executable
7607                                 return var_sp;
7608                             }
7609                         }
7610                     }
7611                 }
7612                 else
7613                 {
7614                     scope = eValueTypeVariableLocal;
7615                 }
7616             }
7617
7618             if (symbol_context_scope == NULL)
7619             {
7620                 switch (parent_tag)
7621                 {
7622                 case DW_TAG_subprogram:
7623                 case DW_TAG_inlined_subroutine:
7624                 case DW_TAG_lexical_block:
7625                     if (sc.function)
7626                     {
7627                         symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
7628                         if (symbol_context_scope == NULL)
7629                             symbol_context_scope = sc.function;
7630                     }
7631                     break;
7632
7633                 default:
7634                     symbol_context_scope = sc.comp_unit;
7635                     break;
7636                 }
7637             }
7638
7639             if (symbol_context_scope)
7640             {
7641                 SymbolFileTypeSP type_sp(new SymbolFileType(*this, type_uid));
7642
7643                 if (const_value.Form() && type_sp && type_sp->GetType())
7644                     location.CopyOpcodeData(const_value.Unsigned(), type_sp->GetType()->GetByteSize(), dwarf_cu->GetAddressByteSize());
7645
7646                 var_sp.reset (new Variable (MakeUserID(die->GetOffset()),
7647                                             name,
7648                                             mangled,
7649                                             type_sp,
7650                                             scope,
7651                                             symbol_context_scope,
7652                                             &decl,
7653                                             location,
7654                                             is_external,
7655                                             is_artificial));
7656
7657                 var_sp->SetLocationIsConstantValueData (location_is_const_value_data);
7658             }
7659             else
7660             {
7661                 // Not ready to parse this variable yet. It might be a global
7662                 // or static variable that is in a function scope and the function
7663                 // in the symbol context wasn't filled in yet
7664                 return var_sp;
7665             }
7666         }
7667         // Cache var_sp even if NULL (the variable was just a specification or
7668         // was missing vital information to be able to be displayed in the debugger
7669         // (missing location due to optimization, etc)) so we don't re-parse
7670         // this DIE over and over later...
7671         m_die_to_variable_sp[die] = var_sp;
7672     }
7673     return var_sp;
7674 }
7675
7676
7677 const DWARFDebugInfoEntry *
7678 SymbolFileDWARF::FindBlockContainingSpecification (dw_offset_t func_die_offset,
7679                                                    dw_offset_t spec_block_die_offset,
7680                                                    DWARFCompileUnit **result_die_cu_handle)
7681 {
7682     // Give the concrete function die specified by "func_die_offset", find the
7683     // concrete block whose DW_AT_specification or DW_AT_abstract_origin points
7684     // to "spec_block_die_offset"
7685     DWARFDebugInfo* info = DebugInfo();
7686
7687     const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint(func_die_offset, result_die_cu_handle);
7688     if (die)
7689     {
7690         assert (*result_die_cu_handle);
7691         return FindBlockContainingSpecification (*result_die_cu_handle, die, spec_block_die_offset, result_die_cu_handle);
7692     }
7693     return NULL;
7694 }
7695
7696
7697 const DWARFDebugInfoEntry *
7698 SymbolFileDWARF::FindBlockContainingSpecification(DWARFCompileUnit* dwarf_cu,
7699                                                   const DWARFDebugInfoEntry *die,
7700                                                   dw_offset_t spec_block_die_offset,
7701                                                   DWARFCompileUnit **result_die_cu_handle)
7702 {
7703     if (die)
7704     {
7705         switch (die->Tag())
7706         {
7707         case DW_TAG_subprogram:
7708         case DW_TAG_inlined_subroutine:
7709         case DW_TAG_lexical_block:
7710             {
7711                 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_specification, DW_INVALID_OFFSET) == spec_block_die_offset)
7712                 {
7713                     *result_die_cu_handle = dwarf_cu;
7714                     return die;
7715                 }
7716
7717                 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_abstract_origin, DW_INVALID_OFFSET) == spec_block_die_offset)
7718                 {
7719                     *result_die_cu_handle = dwarf_cu;
7720                     return die;
7721                 }
7722             }
7723             break;
7724         }
7725
7726         // Give the concrete function die specified by "func_die_offset", find the
7727         // concrete block whose DW_AT_specification or DW_AT_abstract_origin points
7728         // to "spec_block_die_offset"
7729         for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); child_die != NULL; child_die = child_die->GetSibling())
7730         {
7731             const DWARFDebugInfoEntry *result_die = FindBlockContainingSpecification (dwarf_cu,
7732                                                                                       child_die,
7733                                                                                       spec_block_die_offset,
7734                                                                                       result_die_cu_handle);
7735             if (result_die)
7736                 return result_die;
7737         }
7738     }
7739
7740     *result_die_cu_handle = NULL;
7741     return NULL;
7742 }
7743
7744 size_t
7745 SymbolFileDWARF::ParseVariables
7746 (
7747     const SymbolContext& sc,
7748     DWARFCompileUnit* dwarf_cu,
7749     const lldb::addr_t func_low_pc,
7750     const DWARFDebugInfoEntry *orig_die,
7751     bool parse_siblings,
7752     bool parse_children,
7753     VariableList* cc_variable_list
7754 )
7755 {
7756     if (orig_die == NULL)
7757         return 0;
7758
7759     VariableListSP variable_list_sp;
7760
7761     size_t vars_added = 0;
7762     const DWARFDebugInfoEntry *die = orig_die;
7763     while (die != NULL)
7764     {
7765         dw_tag_t tag = die->Tag();
7766
7767         // Check to see if we have already parsed this variable or constant?
7768         if (m_die_to_variable_sp[die])
7769         {
7770             if (cc_variable_list)
7771                 cc_variable_list->AddVariableIfUnique (m_die_to_variable_sp[die]);
7772         }
7773         else
7774         {
7775             // We haven't already parsed it, lets do that now.
7776             if ((tag == DW_TAG_variable) ||
7777                 (tag == DW_TAG_constant) ||
7778                 (tag == DW_TAG_formal_parameter && sc.function))
7779             {
7780                 if (variable_list_sp.get() == NULL)
7781                 {
7782                     const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(orig_die);
7783                     dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
7784                     switch (parent_tag)
7785                     {
7786                         case DW_TAG_compile_unit:
7787                             if (sc.comp_unit != NULL)
7788                             {
7789                                 variable_list_sp = sc.comp_unit->GetVariableList(false);
7790                                 if (variable_list_sp.get() == NULL)
7791                                 {
7792                                     variable_list_sp.reset(new VariableList());
7793                                     sc.comp_unit->SetVariableList(variable_list_sp);
7794                                 }
7795                             }
7796                             else
7797                             {
7798                                 GetObjectFile()->GetModule()->ReportError ("parent 0x%8.8" PRIx64 " %s with no valid compile unit in symbol context for 0x%8.8" PRIx64 " %s.\n",
7799                                                                            MakeUserID(sc_parent_die->GetOffset()),
7800                                                                            DW_TAG_value_to_name (parent_tag),
7801                                                                            MakeUserID(orig_die->GetOffset()),
7802                                                                            DW_TAG_value_to_name (orig_die->Tag()));
7803                             }
7804                             break;
7805
7806                         case DW_TAG_subprogram:
7807                         case DW_TAG_inlined_subroutine:
7808                         case DW_TAG_lexical_block:
7809                             if (sc.function != NULL)
7810                             {
7811                                 // Check to see if we already have parsed the variables for the given scope
7812
7813                                 Block *block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
7814                                 if (block == NULL)
7815                                 {
7816                                     // This must be a specification or abstract origin with
7817                                     // a concrete block counterpart in the current function. We need
7818                                     // to find the concrete block so we can correctly add the
7819                                     // variable to it
7820                                     DWARFCompileUnit *concrete_block_die_cu = dwarf_cu;
7821                                     const DWARFDebugInfoEntry *concrete_block_die = FindBlockContainingSpecification (sc.function->GetID(),
7822                                                                                                                       sc_parent_die->GetOffset(),
7823                                                                                                                       &concrete_block_die_cu);
7824                                     if (concrete_block_die)
7825                                         block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(concrete_block_die->GetOffset()));
7826                                 }
7827
7828                                 if (block != NULL)
7829                                 {
7830                                     const bool can_create = false;
7831                                     variable_list_sp = block->GetBlockVariableList (can_create);
7832                                     if (variable_list_sp.get() == NULL)
7833                                     {
7834                                         variable_list_sp.reset(new VariableList());
7835                                         block->SetVariableList(variable_list_sp);
7836                                     }
7837                                 }
7838                             }
7839                             break;
7840
7841                         default:
7842                              GetObjectFile()->GetModule()->ReportError ("didn't find appropriate parent DIE for variable list for 0x%8.8" PRIx64 " %s.\n",
7843                                                                         MakeUserID(orig_die->GetOffset()),
7844                                                                         DW_TAG_value_to_name (orig_die->Tag()));
7845                             break;
7846                     }
7847                 }
7848
7849                 if (variable_list_sp)
7850                 {
7851                     VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, func_low_pc));
7852                     if (var_sp)
7853                     {
7854                         variable_list_sp->AddVariableIfUnique (var_sp);
7855                         if (cc_variable_list)
7856                             cc_variable_list->AddVariableIfUnique (var_sp);
7857                         ++vars_added;
7858                     }
7859                 }
7860             }
7861         }
7862
7863         bool skip_children = (sc.function == NULL && tag == DW_TAG_subprogram);
7864
7865         if (!skip_children && parse_children && die->HasChildren())
7866         {
7867             vars_added += ParseVariables(sc, dwarf_cu, func_low_pc, die->GetFirstChild(), true, true, cc_variable_list);
7868         }
7869
7870         if (parse_siblings)
7871             die = die->GetSibling();
7872         else
7873             die = NULL;
7874     }
7875     return vars_added;
7876 }
7877
7878 //------------------------------------------------------------------
7879 // PluginInterface protocol
7880 //------------------------------------------------------------------
7881 ConstString
7882 SymbolFileDWARF::GetPluginName()
7883 {
7884     return GetPluginNameStatic();
7885 }
7886
7887 uint32_t
7888 SymbolFileDWARF::GetPluginVersion()
7889 {
7890     return 1;
7891 }
7892
7893 void
7894 SymbolFileDWARF::CompleteTagDecl (void *baton, clang::TagDecl *decl)
7895 {
7896     SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7897     ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl);
7898     if (clang_type)
7899         symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type);
7900 }
7901
7902 void
7903 SymbolFileDWARF::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *decl)
7904 {
7905     SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7906     ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl);
7907     if (clang_type)
7908         symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type);
7909 }
7910
7911 void
7912 SymbolFileDWARF::DumpIndexes ()
7913 {
7914     StreamFile s(stdout, false);
7915
7916     s.Printf ("DWARF index for (%s) '%s':",
7917               GetObjectFile()->GetModule()->GetArchitecture().GetArchitectureName(),
7918               GetObjectFile()->GetFileSpec().GetPath().c_str());
7919     s.Printf("\nFunction basenames:\n");    m_function_basename_index.Dump (&s);
7920     s.Printf("\nFunction fullnames:\n");    m_function_fullname_index.Dump (&s);
7921     s.Printf("\nFunction methods:\n");      m_function_method_index.Dump (&s);
7922     s.Printf("\nFunction selectors:\n");    m_function_selector_index.Dump (&s);
7923     s.Printf("\nObjective C class selectors:\n");    m_objc_class_selectors_index.Dump (&s);
7924     s.Printf("\nGlobals and statics:\n");   m_global_index.Dump (&s);
7925     s.Printf("\nTypes:\n");                 m_type_index.Dump (&s);
7926     s.Printf("\nNamepaces:\n");             m_namespace_index.Dump (&s);
7927 }
7928
7929 void
7930 SymbolFileDWARF::SearchDeclContext (const clang::DeclContext *decl_context,
7931                                     const char *name,
7932                                     llvm::SmallVectorImpl <clang::NamedDecl *> *results)
7933 {
7934     DeclContextToDIEMap::iterator iter = m_decl_ctx_to_die.find(decl_context);
7935
7936     if (iter == m_decl_ctx_to_die.end())
7937         return;
7938
7939     for (DIEPointerSet::iterator pos = iter->second.begin(), end = iter->second.end(); pos != end; ++pos)
7940     {
7941         const DWARFDebugInfoEntry *context_die = *pos;
7942
7943         if (!results)
7944             return;
7945
7946         DWARFDebugInfo* info = DebugInfo();
7947
7948         DIEArray die_offsets;
7949
7950         DWARFCompileUnit* dwarf_cu = NULL;
7951         const DWARFDebugInfoEntry* die = NULL;
7952
7953         if (m_using_apple_tables)
7954         {
7955             if (m_apple_types_ap.get())
7956                 m_apple_types_ap->FindByName (name, die_offsets);
7957         }
7958         else
7959         {
7960             if (!m_indexed)
7961                 Index ();
7962
7963             m_type_index.Find (ConstString(name), die_offsets);
7964         }
7965
7966         const size_t num_matches = die_offsets.size();
7967
7968         if (num_matches)
7969         {
7970             for (size_t i = 0; i < num_matches; ++i)
7971             {
7972                 const dw_offset_t die_offset = die_offsets[i];
7973                 die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
7974
7975                 if (die->GetParent() != context_die)
7976                     continue;
7977
7978                 Type *matching_type = ResolveType (dwarf_cu, die);
7979
7980                 clang::QualType qual_type = matching_type->GetClangForwardType().GetQualType();
7981
7982                 if (const clang::TagType *tag_type = llvm::dyn_cast<clang::TagType>(qual_type.getTypePtr()))
7983                 {
7984                     clang::TagDecl *tag_decl = tag_type->getDecl();
7985                     results->push_back(tag_decl);
7986                 }
7987                 else if (const clang::TypedefType *typedef_type = llvm::dyn_cast<clang::TypedefType>(qual_type.getTypePtr()))
7988                 {
7989                     clang::TypedefNameDecl *typedef_decl = typedef_type->getDecl();
7990                     results->push_back(typedef_decl);
7991                 }
7992             }
7993         }
7994     }
7995 }
7996
7997 void
7998 SymbolFileDWARF::FindExternalVisibleDeclsByName (void *baton,
7999                                                  const clang::DeclContext *decl_context,
8000                                                  clang::DeclarationName decl_name,
8001                                                  llvm::SmallVectorImpl <clang::NamedDecl *> *results)
8002 {
8003
8004     switch (decl_context->getDeclKind())
8005     {
8006     case clang::Decl::Namespace:
8007     case clang::Decl::TranslationUnit:
8008         {
8009             SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
8010             symbol_file_dwarf->SearchDeclContext (decl_context, decl_name.getAsString().c_str(), results);
8011         }
8012         break;
8013     default:
8014         break;
8015     }
8016 }
8017
8018 bool
8019 SymbolFileDWARF::LayoutRecordType (void *baton,
8020                                    const clang::RecordDecl *record_decl,
8021                                    uint64_t &size,
8022                                    uint64_t &alignment,
8023                                    llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets,
8024                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
8025                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets)
8026 {
8027     SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
8028     return symbol_file_dwarf->LayoutRecordType (record_decl, size, alignment, field_offsets, base_offsets, vbase_offsets);
8029 }
8030
8031
8032 bool
8033 SymbolFileDWARF::LayoutRecordType (const clang::RecordDecl *record_decl,
8034                                    uint64_t &bit_size,
8035                                    uint64_t &alignment,
8036                                    llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets,
8037                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
8038                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets)
8039 {
8040     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
8041     RecordDeclToLayoutMap::iterator pos = m_record_decl_to_layout_map.find (record_decl);
8042     bool success = false;
8043     base_offsets.clear();
8044     vbase_offsets.clear();
8045     if (pos != m_record_decl_to_layout_map.end())
8046     {
8047         bit_size = pos->second.bit_size;
8048         alignment = pos->second.alignment;
8049         field_offsets.swap(pos->second.field_offsets);
8050         base_offsets.swap (pos->second.base_offsets);
8051         vbase_offsets.swap (pos->second.vbase_offsets);
8052         m_record_decl_to_layout_map.erase(pos);
8053         success = true;
8054     }
8055     else
8056     {
8057         bit_size = 0;
8058         alignment = 0;
8059         field_offsets.clear();
8060     }
8061
8062     if (log)
8063         GetObjectFile()->GetModule()->LogMessage (log,
8064                                                   "SymbolFileDWARF::LayoutRecordType (record_decl = %p, bit_size = %" PRIu64 ", alignment = %" PRIu64 ", field_offsets[%u],base_offsets[%u], vbase_offsets[%u]) success = %i",
8065                                                   static_cast<const void*>(record_decl),
8066                                                   bit_size, alignment,
8067                                                   static_cast<uint32_t>(field_offsets.size()),
8068                                                   static_cast<uint32_t>(base_offsets.size()),
8069                                                   static_cast<uint32_t>(vbase_offsets.size()),
8070                                                   success);
8071     return success;
8072 }
8073
8074
8075 SymbolFileDWARFDebugMap *
8076 SymbolFileDWARF::GetDebugMapSymfile ()
8077 {
8078     if (m_debug_map_symfile == NULL && !m_debug_map_module_wp.expired())
8079     {
8080         lldb::ModuleSP module_sp (m_debug_map_module_wp.lock());
8081         if (module_sp)
8082         {
8083             SymbolVendor *sym_vendor = module_sp->GetSymbolVendor();
8084             if (sym_vendor)
8085                 m_debug_map_symfile = (SymbolFileDWARFDebugMap *)sym_vendor->GetSymbolFile();
8086         }
8087     }
8088     return m_debug_map_symfile;
8089 }
8090
8091