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

   1 //===-- SymbolFileDWARF.cpp ------------------------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "SymbolFileDWARF.h"
  11
  12 // Other libraries and framework includes
  13 #include "clang/AST/ASTConsumer.h"
  14 #include "clang/AST/ASTContext.h"
  15 #include "clang/AST/Decl.h"
  16 #include "clang/AST/DeclGroup.h"
  17 #include "clang/AST/DeclObjC.h"
  18 #include "clang/AST/DeclTemplate.h"
  19 #include "clang/Basic/Builtins.h"
  20 #include "clang/Basic/IdentifierTable.h"
  21 #include "clang/Basic/LangOptions.h"
  22 #include "clang/Basic/SourceManager.h"
  23 #include "clang/Basic/TargetInfo.h"
  24 #include "clang/Basic/Specifiers.h"
  25 #include "clang/Sema/DeclSpec.h"
  26
  27 #include "llvm/Support/Casting.h"
  28
  29 #include "lldb/Core/Module.h"
  30 #include "lldb/Core/PluginManager.h"
  31 #include "lldb/Core/RegularExpression.h"
  32 #include "lldb/Core/Scalar.h"
  33 #include "lldb/Core/Section.h"
  34 #include "lldb/Core/StreamFile.h"
  35 #include "lldb/Core/StreamString.h"
  36 #include "lldb/Core/Timer.h"
  37 #include "lldb/Core/Value.h"
  38
  39 #include "lldb/Host/Host.h"
  40
  41 #include "lldb/Symbol/Block.h"
  42 #include "lldb/Symbol/ClangExternalASTSourceCallbacks.h"
  43 #include "lldb/Symbol/CompileUnit.h"
  44 #include "lldb/Symbol/LineTable.h"
  45 #include "lldb/Symbol/ObjectFile.h"
  46 #include "lldb/Symbol/SymbolVendor.h"
  47 #include "lldb/Symbol/VariableList.h"
  48
  49 #include "lldb/Target/ObjCLanguageRuntime.h"
  50 #include "lldb/Target/CPPLanguageRuntime.h"
  51
  52 #include "DWARFCompileUnit.h"
  53 #include "DWARFDebugAbbrev.h"
  54 #include "DWARFDebugAranges.h"
  55 #include "DWARFDebugInfo.h"
  56 #include "DWARFDebugInfoEntry.h"
  57 #include "DWARFDebugLine.h"
  58 #include "DWARFDebugPubnames.h"
  59 #include "DWARFDebugRanges.h"
  60 #include "DWARFDeclContext.h"
  61 #include "DWARFDIECollection.h"
  62 #include "DWARFFormValue.h"
  63 #include "DWARFLocationList.h"
  64 #include "LogChannelDWARF.h"
  65 #include "SymbolFileDWARFDebugMap.h"
  66
  67 #include <map>
  68
  69 //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN
  70
  71 #ifdef ENABLE_DEBUG_PRINTF
  72 #include <stdio.h>
  73 #define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__)
  74 #else
  75 #define DEBUG_PRINTF(fmt, ...)
  76 #endif
  77
  78 #define DIE_IS_BEING_PARSED ((lldb_private::Type*)1)
  79
  80 using namespace lldb;
  81 using namespace lldb_private;
  82
  83 //static inline bool
  84 //child_requires_parent_class_union_or_struct_to_be_completed (dw_tag_t tag)
  85 //{
  86 //    switch (tag)
  87 //    {
  88 //    default:
  89 //        break;
  90 //    case DW_TAG_subprogram:
  91 //    case DW_TAG_inlined_subroutine:
  92 //    case DW_TAG_class_type:
  93 //    case DW_TAG_structure_type:
  94 //    case DW_TAG_union_type:
  95 //        return true;
  96 //    }
  97 //    return false;
  98 //}
  99 //
 100 static AccessType
 101 DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility)
 102 {
 103     switch (dwarf_accessibility)
 104     {
 105         case DW_ACCESS_public:      return eAccessPublic;
 106         case DW_ACCESS_private:     return eAccessPrivate;
 107         case DW_ACCESS_protected:   return eAccessProtected;
 108         default:                    break;
 109     }
 110     return eAccessNone;
 111 }
 112
 113 #if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE)
 114
 115 class DIEStack
 116 {
 117 public:
 118
 119     void Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
 120     {
 121         m_dies.push_back (DIEInfo(cu, die));
 122     }
 123
 124
 125     void LogDIEs (Log *log, SymbolFileDWARF *dwarf)
 126     {
 127         StreamString log_strm;
 128         const size_t n = m_dies.size();
 129         log_strm.Printf("DIEStack[%" PRIu64 "]:\n", (uint64_t)n);
 130         for (size_t i=0; i<n; i++)
 131         {
 132             DWARFCompileUnit *cu = m_dies[i].cu;
 133             const DWARFDebugInfoEntry *die = m_dies[i].die;
 134             std::string qualified_name;
 135             die->GetQualifiedName(dwarf, cu, qualified_name);
 136             log_strm.Printf ("[%" PRIu64 "] 0x%8.8x: %s name='%s'\n",
 137                              (uint64_t)i,
 138                              die->GetOffset(),
 139                              DW_TAG_value_to_name(die->Tag()),
 140                              qualified_name.c_str());
 141         }
 142         log->PutCString(log_strm.GetData());
 143     }
 144     void Pop ()
 145     {
 146         m_dies.pop_back();
 147     }
 148
 149     class ScopedPopper
 150     {
 151     public:
 152         ScopedPopper (DIEStack &die_stack) :
 153             m_die_stack (die_stack),
 154             m_valid (false)
 155         {
 156         }
 157
 158         void
 159         Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
 160         {
 161             m_valid = true;
 162             m_die_stack.Push (cu, die);
 163         }
 164
 165         ~ScopedPopper ()
 166         {
 167             if (m_valid)
 168                 m_die_stack.Pop();
 169         }
 170
 171
 172
 173     protected:
 174         DIEStack &m_die_stack;
 175         bool m_valid;
 176     };
 177
 178 protected:
 179     struct DIEInfo {
 180         DIEInfo (DWARFCompileUnit *c, const DWARFDebugInfoEntry *d) :
 181             cu(c),
 182             die(d)
 183         {
 184         }
 185         DWARFCompileUnit *cu;
 186         const DWARFDebugInfoEntry *die;
 187     };
 188     typedef std::vector<DIEInfo> Stack;
 189     Stack m_dies;
 190 };
 191 #endif
 192
 193 void
 194 SymbolFileDWARF::Initialize()
 195 {
 196     LogChannelDWARF::Initialize();
 197     PluginManager::RegisterPlugin (GetPluginNameStatic(),
 198                                    GetPluginDescriptionStatic(),
 199                                    CreateInstance);
 200 }
 201
 202 void
 203 SymbolFileDWARF::Terminate()
 204 {
 205     PluginManager::UnregisterPlugin (CreateInstance);
 206     LogChannelDWARF::Initialize();
 207 }
 208
 209
 210 lldb_private::ConstString
 211 SymbolFileDWARF::GetPluginNameStatic()
 212 {
 213     static ConstString g_name("dwarf");
 214     return g_name;
 215 }
 216
 217 const char *
 218 SymbolFileDWARF::GetPluginDescriptionStatic()
 219 {
 220     return "DWARF and DWARF3 debug symbol file reader.";
 221 }
 222
 223
 224 SymbolFile*
 225 SymbolFileDWARF::CreateInstance (ObjectFile* obj_file)
 226 {
 227     return new SymbolFileDWARF(obj_file);
 228 }
 229
 230 TypeList *
 231 SymbolFileDWARF::GetTypeList ()
 232 {
 233     if (GetDebugMapSymfile ())
 234         return m_debug_map_symfile->GetTypeList();
 235     return m_obj_file->GetModule()->GetTypeList();
 236
 237 }
 238 void
 239 SymbolFileDWARF::GetTypes (DWARFCompileUnit* cu,
 240                            const DWARFDebugInfoEntry *die,
 241                            dw_offset_t min_die_offset,
 242                            dw_offset_t max_die_offset,
 243                            uint32_t type_mask,
 244                            TypeSet &type_set)
 245 {
 246     if (cu)
 247     {
 248         if (die)
 249         {
 250             const dw_offset_t die_offset = die->GetOffset();
 251
 252             if (die_offset >= max_die_offset)
 253                 return;
 254
 255             if (die_offset >= min_die_offset)
 256             {
 257                 const dw_tag_t tag = die->Tag();
 258
 259                 bool add_type = false;
 260
 261                 switch (tag)
 262                 {
 263                     case DW_TAG_array_type:         add_type = (type_mask & eTypeClassArray         ) != 0; break;
 264                     case DW_TAG_unspecified_type:
 265                     case DW_TAG_base_type:          add_type = (type_mask & eTypeClassBuiltin       ) != 0; break;
 266                     case DW_TAG_class_type:         add_type = (type_mask & eTypeClassClass         ) != 0; break;
 267                     case DW_TAG_structure_type:     add_type = (type_mask & eTypeClassStruct        ) != 0; break;
 268                     case DW_TAG_union_type:         add_type = (type_mask & eTypeClassUnion         ) != 0; break;
 269                     case DW_TAG_enumeration_type:   add_type = (type_mask & eTypeClassEnumeration   ) != 0; break;
 270                     case DW_TAG_subroutine_type:
 271                     case DW_TAG_subprogram:
 272                     case DW_TAG_inlined_subroutine: add_type = (type_mask & eTypeClassFunction      ) != 0; break;
 273                     case DW_TAG_pointer_type:       add_type = (type_mask & eTypeClassPointer       ) != 0; break;
 274                     case DW_TAG_rvalue_reference_type:
 275                     case DW_TAG_reference_type:     add_type = (type_mask & eTypeClassReference     ) != 0; break;
 276                     case DW_TAG_typedef:            add_type = (type_mask & eTypeClassTypedef       ) != 0; break;
 277                     case DW_TAG_ptr_to_member_type: add_type = (type_mask & eTypeClassMemberPointer ) != 0; break;
 278                 }
 279
 280                 if (add_type)
 281                 {
 282                     const bool assert_not_being_parsed = true;
 283                     Type *type = ResolveTypeUID (cu, die, assert_not_being_parsed);
 284                     if (type)
 285                     {
 286                         if (type_set.find(type) == type_set.end())
 287                             type_set.insert(type);
 288                     }
 289                 }
 290             }
 291
 292             for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild();
 293                  child_die != NULL;
 294                  child_die = child_die->GetSibling())
 295             {
 296                 GetTypes (cu, child_die, min_die_offset, max_die_offset, type_mask, type_set);
 297             }
 298         }
 299     }
 300 }
 301
 302 size_t
 303 SymbolFileDWARF::GetTypes (SymbolContextScope *sc_scope,
 304                            uint32_t type_mask,
 305                            TypeList &type_list)
 306
 307 {
 308     TypeSet type_set;
 309
 310     CompileUnit *comp_unit = NULL;
 311     DWARFCompileUnit* dwarf_cu = NULL;
 312     if (sc_scope)
 313         comp_unit = sc_scope->CalculateSymbolContextCompileUnit();
 314
 315     if (comp_unit)
 316     {
 317         dwarf_cu = GetDWARFCompileUnit(comp_unit);
 318         if (dwarf_cu == 0)
 319             return 0;
 320         GetTypes (dwarf_cu,
 321                   dwarf_cu->DIE(),
 322                   dwarf_cu->GetOffset(),
 323                   dwarf_cu->GetNextCompileUnitOffset(),
 324                   type_mask,
 325                   type_set);
 326     }
 327     else
 328     {
 329         DWARFDebugInfo* info = DebugInfo();
 330         if (info)
 331         {
 332             const size_t num_cus = info->GetNumCompileUnits();
 333             for (size_t cu_idx=0; cu_idx<num_cus; ++cu_idx)
 334             {
 335                 dwarf_cu = info->GetCompileUnitAtIndex(cu_idx);
 336                 if (dwarf_cu)
 337                 {
 338                     GetTypes (dwarf_cu,
 339                               dwarf_cu->DIE(),
 340                               0,
 341                               UINT32_MAX,
 342                               type_mask,
 343                               type_set);
 344                 }
 345             }
 346         }
 347     }
 348 //    if (m_using_apple_tables)
 349 //    {
 350 //        DWARFMappedHash::MemoryTable *apple_types = m_apple_types_ap.get();
 351 //        if (apple_types)
 352 //        {
 353 //            apple_types->ForEach([this, &type_set, apple_types, type_mask](const DWARFMappedHash::DIEInfoArray &die_info_array) -> bool {
 354 //
 355 //                for (auto die_info: die_info_array)
 356 //                {
 357 //                    bool add_type = TagMatchesTypeMask (type_mask, 0);
 358 //                    if (!add_type)
 359 //                    {
 360 //                        dw_tag_t tag = die_info.tag;
 361 //                        if (tag == 0)
 362 //                        {
 363 //                            const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtr(die_info.offset, NULL);
 364 //                            tag = die->Tag();
 365 //                        }
 366 //                        add_type = TagMatchesTypeMask (type_mask, tag);
 367 //                    }
 368 //                    if (add_type)
 369 //                    {
 370 //                        Type *type = ResolveTypeUID(die_info.offset);
 371 //
 372 //                        if (type_set.find(type) == type_set.end())
 373 //                            type_set.insert(type);
 374 //                    }
 375 //                }
 376 //                return true; // Keep iterating
 377 //            });
 378 //        }
 379 //    }
 380 //    else
 381 //    {
 382 //        if (!m_indexed)
 383 //            Index ();
 384 //
 385 //        m_type_index.ForEach([this, &type_set, type_mask](const char *name, uint32_t die_offset) -> bool {
 386 //
 387 //            bool add_type = TagMatchesTypeMask (type_mask, 0);
 388 //
 389 //            if (!add_type)
 390 //            {
 391 //                const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtr(die_offset, NULL);
 392 //                if (die)
 393 //                {
 394 //                    const dw_tag_t tag = die->Tag();
 395 //                    add_type = TagMatchesTypeMask (type_mask, tag);
 396 //                }
 397 //            }
 398 //
 399 //            if (add_type)
 400 //            {
 401 //                Type *type = ResolveTypeUID(die_offset);
 402 //
 403 //                if (type_set.find(type) == type_set.end())
 404 //                    type_set.insert(type);
 405 //            }
 406 //            return true; // Keep iterating
 407 //        });
 408 //    }
 409
 410     std::set<ClangASTType> clang_type_set;
 411     size_t num_types_added = 0;
 412     for (Type *type : type_set)
 413     {
 414         ClangASTType clang_type = type->GetClangForwardType();
 415         if (clang_type_set.find(clang_type) == clang_type_set.end())
 416         {
 417             clang_type_set.insert(clang_type);
 418             type_list.Insert (type->shared_from_this());
 419             ++num_types_added;
 420         }
 421     }
 422     return num_types_added;
 423 }
 424
 425
 426 //----------------------------------------------------------------------
 427 // Gets the first parent that is a lexical block, function or inlined
 428 // subroutine, or compile unit.
 429 //----------------------------------------------------------------------
 430 static const DWARFDebugInfoEntry *
 431 GetParentSymbolContextDIE(const DWARFDebugInfoEntry *child_die)
 432 {
 433     const DWARFDebugInfoEntry *die;
 434     for (die = child_die->GetParent(); die != NULL; die = die->GetParent())
 435     {
 436         dw_tag_t tag = die->Tag();
 437
 438         switch (tag)
 439         {
 440         case DW_TAG_compile_unit:
 441         case DW_TAG_subprogram:
 442         case DW_TAG_inlined_subroutine:
 443         case DW_TAG_lexical_block:
 444             return die;
 445         }
 446     }
 447     return NULL;
 448 }
 449
 450
 451 SymbolFileDWARF::SymbolFileDWARF(ObjectFile* objfile) :
 452     SymbolFile (objfile),
 453     UserID (0),  // Used by SymbolFileDWARFDebugMap to when this class parses .o files to contain the .o file index/ID
 454     m_debug_map_module_wp (),
 455     m_debug_map_symfile (NULL),
 456     m_clang_tu_decl (NULL),
 457     m_flags(),
 458     m_data_debug_abbrev (),
 459     m_data_debug_aranges (),
 460     m_data_debug_frame (),
 461     m_data_debug_info (),
 462     m_data_debug_line (),
 463     m_data_debug_loc (),
 464     m_data_debug_ranges (),
 465     m_data_debug_str (),
 466     m_data_apple_names (),
 467     m_data_apple_types (),
 468     m_data_apple_namespaces (),
 469     m_abbr(),
 470     m_info(),
 471     m_line(),
 472     m_apple_names_ap (),
 473     m_apple_types_ap (),
 474     m_apple_namespaces_ap (),
 475     m_apple_objc_ap (),
 476     m_function_basename_index(),
 477     m_function_fullname_index(),
 478     m_function_method_index(),
 479     m_function_selector_index(),
 480     m_objc_class_selectors_index(),
 481     m_global_index(),
 482     m_type_index(),
 483     m_namespace_index(),
 484     m_indexed (false),
 485     m_is_external_ast_source (false),
 486     m_using_apple_tables (false),
 487     m_supports_DW_AT_APPLE_objc_complete_type (eLazyBoolCalculate),
 488     m_ranges(),
 489     m_unique_ast_type_map ()
 490 {
 491 }
 492
 493 SymbolFileDWARF::~SymbolFileDWARF()
 494 {
 495     if (m_is_external_ast_source)
 496     {
 497         ModuleSP module_sp (m_obj_file->GetModule());
 498         if (module_sp)
 499             module_sp->GetClangASTContext().RemoveExternalSource ();
 500     }
 501 }
 502
 503 static const ConstString &
 504 GetDWARFMachOSegmentName ()
 505 {
 506     static ConstString g_dwarf_section_name ("__DWARF");
 507     return g_dwarf_section_name;
 508 }
 509
 510 UniqueDWARFASTTypeMap &
 511 SymbolFileDWARF::GetUniqueDWARFASTTypeMap ()
 512 {
 513     if (GetDebugMapSymfile ())
 514         return m_debug_map_symfile->GetUniqueDWARFASTTypeMap ();
 515     return m_unique_ast_type_map;
 516 }
 517
 518 ClangASTContext &
 519 SymbolFileDWARF::GetClangASTContext ()
 520 {
 521     if (GetDebugMapSymfile ())
 522         return m_debug_map_symfile->GetClangASTContext ();
 523
 524     ClangASTContext &ast = m_obj_file->GetModule()->GetClangASTContext();
 525     if (!m_is_external_ast_source)
 526     {
 527         m_is_external_ast_source = true;
 528         llvm::OwningPtr<clang::ExternalASTSource> ast_source_ap (
 529             new ClangExternalASTSourceCallbacks (SymbolFileDWARF::CompleteTagDecl,
 530                                                  SymbolFileDWARF::CompleteObjCInterfaceDecl,
 531                                                  SymbolFileDWARF::FindExternalVisibleDeclsByName,
 532                                                  SymbolFileDWARF::LayoutRecordType,
 533                                                  this));
 534         ast.SetExternalSource (ast_source_ap);
 535     }
 536     return ast;
 537 }
 538
 539 void
 540 SymbolFileDWARF::InitializeObject()
 541 {
 542     // Install our external AST source callbacks so we can complete Clang types.
 543     ModuleSP module_sp (m_obj_file->GetModule());
 544     if (module_sp)
 545     {
 546         const SectionList *section_list = module_sp->GetSectionList();
 547
 548         const Section* section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get();
 549
 550         // Memory map the DWARF mach-o segment so we have everything mmap'ed
 551         // to keep our heap memory usage down.
 552         if (section)
 553             m_obj_file->MemoryMapSectionData(section, m_dwarf_data);
 554     }
 555     get_apple_names_data();
 556     if (m_data_apple_names.GetByteSize() > 0)
 557     {
 558         m_apple_names_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_names, get_debug_str_data(), ".apple_names"));
 559         if (m_apple_names_ap->IsValid())
 560             m_using_apple_tables = true;
 561         else
 562             m_apple_names_ap.reset();
 563     }
 564     get_apple_types_data();
 565     if (m_data_apple_types.GetByteSize() > 0)
 566     {
 567         m_apple_types_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_types, get_debug_str_data(), ".apple_types"));
 568         if (m_apple_types_ap->IsValid())
 569             m_using_apple_tables = true;
 570         else
 571             m_apple_types_ap.reset();
 572     }
 573
 574     get_apple_namespaces_data();
 575     if (m_data_apple_namespaces.GetByteSize() > 0)
 576     {
 577         m_apple_namespaces_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_namespaces, get_debug_str_data(), ".apple_namespaces"));
 578         if (m_apple_namespaces_ap->IsValid())
 579             m_using_apple_tables = true;
 580         else
 581             m_apple_namespaces_ap.reset();
 582     }
 583
 584     get_apple_objc_data();
 585     if (m_data_apple_objc.GetByteSize() > 0)
 586     {
 587         m_apple_objc_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_objc, get_debug_str_data(), ".apple_objc"));
 588         if (m_apple_objc_ap->IsValid())
 589             m_using_apple_tables = true;
 590         else
 591             m_apple_objc_ap.reset();
 592     }
 593 }
 594
 595 bool
 596 SymbolFileDWARF::SupportedVersion(uint16_t version)
 597 {
 598     return version == 2 || version == 3 || version == 4;
 599 }
 600
 601 uint32_t
 602 SymbolFileDWARF::CalculateAbilities ()
 603 {
 604     uint32_t abilities = 0;
 605     if (m_obj_file != NULL)
 606     {
 607         const Section* section = NULL;
 608         const SectionList *section_list = m_obj_file->GetSectionList();
 609         if (section_list == NULL)
 610             return 0;
 611
 612         uint64_t debug_abbrev_file_size = 0;
 613         uint64_t debug_info_file_size = 0;
 614         uint64_t debug_line_file_size = 0;
 615
 616         section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get();
 617
 618         if (section)
 619             section_list = &section->GetChildren ();
 620
 621         section = section_list->FindSectionByType (eSectionTypeDWARFDebugInfo, true).get();
 622         if (section != NULL)
 623         {
 624             debug_info_file_size = section->GetFileSize();
 625
 626             section = section_list->FindSectionByType (eSectionTypeDWARFDebugAbbrev, true).get();
 627             if (section)
 628                 debug_abbrev_file_size = section->GetFileSize();
 629             else
 630                 m_flags.Set (flagsGotDebugAbbrevData);
 631
 632             section = section_list->FindSectionByType (eSectionTypeDWARFDebugAranges, true).get();
 633             if (!section)
 634                 m_flags.Set (flagsGotDebugArangesData);
 635
 636             section = section_list->FindSectionByType (eSectionTypeDWARFDebugFrame, true).get();
 637             if (!section)
 638                 m_flags.Set (flagsGotDebugFrameData);
 639
 640             section = section_list->FindSectionByType (eSectionTypeDWARFDebugLine, true).get();
 641             if (section)
 642                 debug_line_file_size = section->GetFileSize();
 643             else
 644                 m_flags.Set (flagsGotDebugLineData);
 645
 646             section = section_list->FindSectionByType (eSectionTypeDWARFDebugLoc, true).get();
 647             if (!section)
 648                 m_flags.Set (flagsGotDebugLocData);
 649
 650             section = section_list->FindSectionByType (eSectionTypeDWARFDebugMacInfo, true).get();
 651             if (!section)
 652                 m_flags.Set (flagsGotDebugMacInfoData);
 653
 654             section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubNames, true).get();
 655             if (!section)
 656                 m_flags.Set (flagsGotDebugPubNamesData);
 657
 658             section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubTypes, true).get();
 659             if (!section)
 660                 m_flags.Set (flagsGotDebugPubTypesData);
 661
 662             section = section_list->FindSectionByType (eSectionTypeDWARFDebugRanges, true).get();
 663             if (!section)
 664                 m_flags.Set (flagsGotDebugRangesData);
 665
 666             section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get();
 667             if (!section)
 668                 m_flags.Set (flagsGotDebugStrData);
 669         }
 670         else
 671         {
 672             const char *symfile_dir_cstr = m_obj_file->GetFileSpec().GetDirectory().GetCString();
 673             if (symfile_dir_cstr)
 674             {
 675                 if (strcasestr(symfile_dir_cstr, ".dsym"))
 676                 {
 677                     if (m_obj_file->GetType() == ObjectFile::eTypeDebugInfo)
 678                     {
 679                         // We have a dSYM file that didn't have a any debug info.
 680                         // If the string table has a size of 1, then it was made from
 681                         // an executable with no debug info, or from an executable that
 682                         // was stripped.
 683                         section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get();
 684                         if (section && section->GetFileSize() == 1)
 685                         {
 686                             m_obj_file->GetModule()->ReportWarning ("empty dSYM file detected, dSYM was created with an executable with no debug info.");
 687                         }
 688                     }
 689                 }
 690             }
 691         }
 692
 693         if (debug_abbrev_file_size > 0 && debug_info_file_size > 0)
 694             abilities |= CompileUnits | Functions | Blocks | GlobalVariables | LocalVariables | VariableTypes;
 695
 696         if (debug_line_file_size > 0)
 697             abilities |= LineTables;
 698     }
 699     return abilities;
 700 }
 701
 702 const DWARFDataExtractor&
 703 SymbolFileDWARF::GetCachedSectionData (uint32_t got_flag, SectionType sect_type, DWARFDataExtractor &data)
 704 {
 705     if (m_flags.IsClear (got_flag))
 706     {
 707         ModuleSP module_sp (m_obj_file->GetModule());
 708         m_flags.Set (got_flag);
 709         const SectionList *section_list = module_sp->GetSectionList();
 710         if (section_list)
 711         {
 712             SectionSP section_sp (section_list->FindSectionByType(sect_type, true));
 713             if (section_sp)
 714             {
 715                 // See if we memory mapped the DWARF segment?
 716                 if (m_dwarf_data.GetByteSize())
 717                 {
 718                     data.SetData(m_dwarf_data, section_sp->GetOffset (), section_sp->GetFileSize());
 719                 }
 720                 else
 721                 {
 722                     if (m_obj_file->ReadSectionData (section_sp.get(), data) == 0)
 723                         data.Clear();
 724                 }
 725             }
 726         }
 727     }
 728     return data;
 729 }
 730
 731 const DWARFDataExtractor&
 732 SymbolFileDWARF::get_debug_abbrev_data()
 733 {
 734     return GetCachedSectionData (flagsGotDebugAbbrevData, eSectionTypeDWARFDebugAbbrev, m_data_debug_abbrev);
 735 }
 736
 737 const DWARFDataExtractor&
 738 SymbolFileDWARF::get_debug_aranges_data()
 739 {
 740     return GetCachedSectionData (flagsGotDebugArangesData, eSectionTypeDWARFDebugAranges, m_data_debug_aranges);
 741 }
 742
 743 const DWARFDataExtractor&
 744 SymbolFileDWARF::get_debug_frame_data()
 745 {
 746     return GetCachedSectionData (flagsGotDebugFrameData, eSectionTypeDWARFDebugFrame, m_data_debug_frame);
 747 }
 748
 749 const DWARFDataExtractor&
 750 SymbolFileDWARF::get_debug_info_data()
 751 {
 752     return GetCachedSectionData (flagsGotDebugInfoData, eSectionTypeDWARFDebugInfo, m_data_debug_info);
 753 }
 754
 755 const DWARFDataExtractor&
 756 SymbolFileDWARF::get_debug_line_data()
 757 {
 758     return GetCachedSectionData (flagsGotDebugLineData, eSectionTypeDWARFDebugLine, m_data_debug_line);
 759 }
 760
 761 const DWARFDataExtractor&
 762 SymbolFileDWARF::get_debug_loc_data()
 763 {
 764     return GetCachedSectionData (flagsGotDebugLocData, eSectionTypeDWARFDebugLoc, m_data_debug_loc);
 765 }
 766
 767 const DWARFDataExtractor&
 768 SymbolFileDWARF::get_debug_ranges_data()
 769 {
 770     return GetCachedSectionData (flagsGotDebugRangesData, eSectionTypeDWARFDebugRanges, m_data_debug_ranges);
 771 }
 772
 773 const DWARFDataExtractor&
 774 SymbolFileDWARF::get_debug_str_data()
 775 {
 776     return GetCachedSectionData (flagsGotDebugStrData, eSectionTypeDWARFDebugStr, m_data_debug_str);
 777 }
 778
 779 const DWARFDataExtractor&
 780 SymbolFileDWARF::get_apple_names_data()
 781 {
 782     return GetCachedSectionData (flagsGotAppleNamesData, eSectionTypeDWARFAppleNames, m_data_apple_names);
 783 }
 784
 785 const DWARFDataExtractor&
 786 SymbolFileDWARF::get_apple_types_data()
 787 {
 788     return GetCachedSectionData (flagsGotAppleTypesData, eSectionTypeDWARFAppleTypes, m_data_apple_types);
 789 }
 790
 791 const DWARFDataExtractor&
 792 SymbolFileDWARF::get_apple_namespaces_data()
 793 {
 794     return GetCachedSectionData (flagsGotAppleNamespacesData, eSectionTypeDWARFAppleNamespaces, m_data_apple_namespaces);
 795 }
 796
 797 const DWARFDataExtractor&
 798 SymbolFileDWARF::get_apple_objc_data()
 799 {
 800     return GetCachedSectionData (flagsGotAppleObjCData, eSectionTypeDWARFAppleObjC, m_data_apple_objc);
 801 }
 802
 803
 804 DWARFDebugAbbrev*
 805 SymbolFileDWARF::DebugAbbrev()
 806 {
 807     if (m_abbr.get() == NULL)
 808     {
 809         const DWARFDataExtractor &debug_abbrev_data = get_debug_abbrev_data();
 810         if (debug_abbrev_data.GetByteSize() > 0)
 811         {
 812             m_abbr.reset(new DWARFDebugAbbrev());
 813             if (m_abbr.get())
 814                 m_abbr->Parse(debug_abbrev_data);
 815         }
 816     }
 817     return m_abbr.get();
 818 }
 819
 820 const DWARFDebugAbbrev*
 821 SymbolFileDWARF::DebugAbbrev() const
 822 {
 823     return m_abbr.get();
 824 }
 825
 826
 827 DWARFDebugInfo*
 828 SymbolFileDWARF::DebugInfo()
 829 {
 830     if (m_info.get() == NULL)
 831     {
 832         Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this);
 833         if (get_debug_info_data().GetByteSize() > 0)
 834         {
 835             m_info.reset(new DWARFDebugInfo());
 836             if (m_info.get())
 837             {
 838                 m_info->SetDwarfData(this);
 839             }
 840         }
 841     }
 842     return m_info.get();
 843 }
 844
 845 const DWARFDebugInfo*
 846 SymbolFileDWARF::DebugInfo() const
 847 {
 848     return m_info.get();
 849 }
 850
 851 DWARFCompileUnit*
 852 SymbolFileDWARF::GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit)
 853 {
 854     DWARFDebugInfo* info = DebugInfo();
 855     if (info)
 856     {
 857         if (GetDebugMapSymfile ())
 858         {
 859             // The debug map symbol file made the compile units for this DWARF
 860             // file which is .o file with DWARF in it, and we should have
 861             // only 1 compile unit which is at offset zero in the DWARF.
 862             // TODO: modify to support LTO .o files where each .o file might
 863             // have multiple DW_TAG_compile_unit tags.
 864             return info->GetCompileUnit(0).get();
 865         }
 866         else
 867         {
 868             // Just a normal DWARF file whose user ID for the compile unit is
 869             // the DWARF offset itself
 870             return info->GetCompileUnit((dw_offset_t)comp_unit->GetID()).get();
 871         }
 872     }
 873     return NULL;
 874 }
 875
 876
 877 DWARFDebugRanges*
 878 SymbolFileDWARF::DebugRanges()
 879 {
 880     if (m_ranges.get() == NULL)
 881     {
 882         Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this);
 883         if (get_debug_ranges_data().GetByteSize() > 0)
 884         {
 885             m_ranges.reset(new DWARFDebugRanges());
 886             if (m_ranges.get())
 887                 m_ranges->Extract(this);
 888         }
 889     }
 890     return m_ranges.get();
 891 }
 892
 893 const DWARFDebugRanges*
 894 SymbolFileDWARF::DebugRanges() const
 895 {
 896     return m_ranges.get();
 897 }
 898
 899 lldb::CompUnitSP
 900 SymbolFileDWARF::ParseCompileUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx)
 901 {
 902     CompUnitSP cu_sp;
 903     if (dwarf_cu)
 904     {
 905         CompileUnit *comp_unit = (CompileUnit*)dwarf_cu->GetUserData();
 906         if (comp_unit)
 907         {
 908             // We already parsed this compile unit, had out a shared pointer to it
 909             cu_sp = comp_unit->shared_from_this();
 910         }
 911         else
 912         {
 913             if (GetDebugMapSymfile ())
 914             {
 915                 // Let the debug map create the compile unit
 916                 cu_sp = m_debug_map_symfile->GetCompileUnit(this);
 917                 dwarf_cu->SetUserData(cu_sp.get());
 918             }
 919             else
 920             {
 921                 ModuleSP module_sp (m_obj_file->GetModule());
 922                 if (module_sp)
 923                 {
 924                     const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly ();
 925                     if (cu_die)
 926                     {
 927                         const char * cu_die_name = cu_die->GetName(this, dwarf_cu);
 928                         const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL);
 929                         LanguageType cu_language = (LanguageType)cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0);
 930                         if (cu_die_name)
 931                         {
 932                             std::string ramapped_file;
 933                             FileSpec cu_file_spec;
 934
 935                             if (cu_die_name[0] == '/' || cu_comp_dir == NULL || cu_comp_dir[0] == '\0')
 936                             {
 937                                 // If we have a full path to the compile unit, we don't need to resolve
 938                                 // the file.  This can be expensive e.g. when the source files are NFS mounted.
 939                                 if (module_sp->RemapSourceFile(cu_die_name, ramapped_file))
 940                                     cu_file_spec.SetFile (ramapped_file.c_str(), false);
 941                                 else
 942                                     cu_file_spec.SetFile (cu_die_name, false);
 943                             }
 944                             else
 945                             {
 946                                 std::string fullpath(cu_comp_dir);
 947                                 if (*fullpath.rbegin() != '/')
 948                                     fullpath += '/';
 949                                 fullpath += cu_die_name;
 950                                 if (module_sp->RemapSourceFile (fullpath.c_str(), ramapped_file))
 951                                     cu_file_spec.SetFile (ramapped_file.c_str(), false);
 952                                 else
 953                                     cu_file_spec.SetFile (fullpath.c_str(), false);
 954                             }
 955
 956                             cu_sp.reset(new CompileUnit (module_sp,
 957                                                          dwarf_cu,
 958                                                          cu_file_spec,
 959                                                          MakeUserID(dwarf_cu->GetOffset()),
 960                                                          cu_language));
 961                             if (cu_sp)
 962                             {
 963                                 dwarf_cu->SetUserData(cu_sp.get());
 964
 965                                 // Figure out the compile unit index if we weren't given one
 966                                 if (cu_idx == UINT32_MAX)
 967                                     DebugInfo()->GetCompileUnit(dwarf_cu->GetOffset(), &cu_idx);
 968
 969                                 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp);
 970                             }
 971                         }
 972                     }
 973                 }
 974             }
 975         }
 976     }
 977     return cu_sp;
 978 }
 979
 980 uint32_t
 981 SymbolFileDWARF::GetNumCompileUnits()
 982 {
 983     DWARFDebugInfo* info = DebugInfo();
 984     if (info)
 985         return info->GetNumCompileUnits();
 986     return 0;
 987 }
 988
 989 CompUnitSP
 990 SymbolFileDWARF::ParseCompileUnitAtIndex(uint32_t cu_idx)
 991 {
 992     CompUnitSP cu_sp;
 993     DWARFDebugInfo* info = DebugInfo();
 994     if (info)
 995     {
 996         DWARFCompileUnit* dwarf_cu = info->GetCompileUnitAtIndex(cu_idx);
 997         if (dwarf_cu)
 998             cu_sp = ParseCompileUnit(dwarf_cu, cu_idx);
 999     }
1000     return cu_sp;
1001 }
1002
1003 static void
1004 AddRangesToBlock (Block& block,
1005                   DWARFDebugRanges::RangeList& ranges,
1006                   addr_t block_base_addr)
1007 {
1008     const size_t num_ranges = ranges.GetSize();
1009     for (size_t i = 0; i<num_ranges; ++i)
1010     {
1011         const DWARFDebugRanges::Range &range = ranges.GetEntryRef (i);
1012         const addr_t range_base = range.GetRangeBase();
1013         assert (range_base >= block_base_addr);
1014         block.AddRange(Block::Range (range_base - block_base_addr, range.GetByteSize()));;
1015     }
1016     block.FinalizeRanges ();
1017 }
1018
1019
1020 Function *
1021 SymbolFileDWARF::ParseCompileUnitFunction (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die)
1022 {
1023     DWARFDebugRanges::RangeList func_ranges;
1024     const char *name = NULL;
1025     const char *mangled = NULL;
1026     int decl_file = 0;
1027     int decl_line = 0;
1028     int decl_column = 0;
1029     int call_file = 0;
1030     int call_line = 0;
1031     int call_column = 0;
1032     DWARFExpression frame_base;
1033
1034     assert (die->Tag() == DW_TAG_subprogram);
1035
1036     if (die->Tag() != DW_TAG_subprogram)
1037         return NULL;
1038
1039     if (die->GetDIENamesAndRanges (this,
1040                                    dwarf_cu,
1041                                    name,
1042                                    mangled,
1043                                    func_ranges,
1044                                    decl_file,
1045                                    decl_line,
1046                                    decl_column,
1047                                    call_file,
1048                                    call_line,
1049                                    call_column,
1050                                    &frame_base))
1051     {
1052         // Union of all ranges in the function DIE (if the function is discontiguous)
1053         AddressRange func_range;
1054         lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase (0);
1055         lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd (0);
1056         if (lowest_func_addr != LLDB_INVALID_ADDRESS && lowest_func_addr <= highest_func_addr)
1057         {
1058             ModuleSP module_sp (m_obj_file->GetModule());
1059             func_range.GetBaseAddress().ResolveAddressUsingFileSections (lowest_func_addr, module_sp->GetSectionList());
1060             if (func_range.GetBaseAddress().IsValid())
1061                 func_range.SetByteSize(highest_func_addr - lowest_func_addr);
1062         }
1063
1064         if (func_range.GetBaseAddress().IsValid())
1065         {
1066             Mangled func_name;
1067             if (mangled)
1068                 func_name.SetValue(ConstString(mangled), true);
1069             else if (name)
1070                 func_name.SetValue(ConstString(name), false);
1071
1072             FunctionSP func_sp;
1073             std::unique_ptr<Declaration> decl_ap;
1074             if (decl_file != 0 || decl_line != 0 || decl_column != 0)
1075                 decl_ap.reset(new Declaration (sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file),
1076                                                decl_line,
1077                                                decl_column));
1078
1079             // Supply the type _only_ if it has already been parsed
1080             Type *func_type = m_die_to_type.lookup (die);
1081
1082             assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED);
1083
1084             if (FixupAddress (func_range.GetBaseAddress()))
1085             {
1086                 const user_id_t func_user_id = MakeUserID(die->GetOffset());
1087                 func_sp.reset(new Function (sc.comp_unit,
1088                                             MakeUserID(func_user_id),       // UserID is the DIE offset
1089                                             MakeUserID(func_user_id),
1090                                             func_name,
1091                                             func_type,
1092                                             func_range));           // first address range
1093
1094                 if (func_sp.get() != NULL)
1095                 {
1096                     if (frame_base.IsValid())
1097                         func_sp->GetFrameBaseExpression() = frame_base;
1098                     sc.comp_unit->AddFunction(func_sp);
1099                     return func_sp.get();
1100                 }
1101             }
1102         }
1103     }
1104     return NULL;
1105 }
1106
1107 bool
1108 SymbolFileDWARF::FixupAddress (Address &addr)
1109 {
1110     SymbolFileDWARFDebugMap * debug_map_symfile = GetDebugMapSymfile ();
1111     if (debug_map_symfile)
1112     {
1113         return debug_map_symfile->LinkOSOAddress(addr);
1114     }
1115     // This is a normal DWARF file, no address fixups need to happen
1116     return true;
1117 }
1118 lldb::LanguageType
1119 SymbolFileDWARF::ParseCompileUnitLanguage (const SymbolContext& sc)
1120 {
1121     assert (sc.comp_unit);
1122     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1123     if (dwarf_cu)
1124     {
1125         const DWARFDebugInfoEntry *die = dwarf_cu->GetCompileUnitDIEOnly();
1126         if (die)
1127         {
1128             const uint32_t language = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0);
1129             if (language)
1130                 return (lldb::LanguageType)language;
1131         }
1132     }
1133     return eLanguageTypeUnknown;
1134 }
1135
1136 size_t
1137 SymbolFileDWARF::ParseCompileUnitFunctions(const SymbolContext &sc)
1138 {
1139     assert (sc.comp_unit);
1140     size_t functions_added = 0;
1141     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1142     if (dwarf_cu)
1143     {
1144         DWARFDIECollection function_dies;
1145         const size_t num_functions = dwarf_cu->AppendDIEsWithTag (DW_TAG_subprogram, function_dies);
1146         size_t func_idx;
1147         for (func_idx = 0; func_idx < num_functions; ++func_idx)
1148         {
1149             const DWARFDebugInfoEntry *die = function_dies.GetDIEPtrAtIndex(func_idx);
1150             if (sc.comp_unit->FindFunctionByUID (MakeUserID(die->GetOffset())).get() == NULL)
1151             {
1152                 if (ParseCompileUnitFunction(sc, dwarf_cu, die))
1153                     ++functions_added;
1154             }
1155         }
1156         //FixupTypes();
1157     }
1158     return functions_added;
1159 }
1160
1161 bool
1162 SymbolFileDWARF::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList& support_files)
1163 {
1164     assert (sc.comp_unit);
1165     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1166     if (dwarf_cu)
1167     {
1168         const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly();
1169
1170         if (cu_die)
1171         {
1172             const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL);
1173             dw_offset_t stmt_list = cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET);
1174
1175             // All file indexes in DWARF are one based and a file of index zero is
1176             // supposed to be the compile unit itself.
1177             support_files.Append (*sc.comp_unit);
1178
1179             return DWARFDebugLine::ParseSupportFiles(sc.comp_unit->GetModule(), get_debug_line_data(), cu_comp_dir, stmt_list, support_files);
1180         }
1181     }
1182     return false;
1183 }
1184
1185 struct ParseDWARFLineTableCallbackInfo
1186 {
1187     LineTable* line_table;
1188     std::unique_ptr<LineSequence> sequence_ap;
1189 };
1190
1191 //----------------------------------------------------------------------
1192 // ParseStatementTableCallback
1193 //----------------------------------------------------------------------
1194 static void
1195 ParseDWARFLineTableCallback(dw_offset_t offset, const DWARFDebugLine::State& state, void* userData)
1196 {
1197     if (state.row == DWARFDebugLine::State::StartParsingLineTable)
1198     {
1199         // Just started parsing the line table
1200     }
1201     else if (state.row == DWARFDebugLine::State::DoneParsingLineTable)
1202     {
1203         // Done parsing line table, nothing to do for the cleanup
1204     }
1205     else
1206     {
1207         ParseDWARFLineTableCallbackInfo* info = (ParseDWARFLineTableCallbackInfo*)userData;
1208         LineTable* line_table = info->line_table;
1209
1210         // If this is our first time here, we need to create a
1211         // sequence container.
1212         if (!info->sequence_ap.get())
1213         {
1214             info->sequence_ap.reset(line_table->CreateLineSequenceContainer());
1215             assert(info->sequence_ap.get());
1216         }
1217         line_table->AppendLineEntryToSequence (info->sequence_ap.get(),
1218                                                state.address,
1219                                                state.line,
1220                                                state.column,
1221                                                state.file,
1222                                                state.is_stmt,
1223                                                state.basic_block,
1224                                                state.prologue_end,
1225                                                state.epilogue_begin,
1226                                                state.end_sequence);
1227         if (state.end_sequence)
1228         {
1229             // First, put the current sequence into the line table.
1230             line_table->InsertSequence(info->sequence_ap.get());
1231             // Then, empty it to prepare for the next sequence.
1232             info->sequence_ap->Clear();
1233         }
1234     }
1235 }
1236
1237 bool
1238 SymbolFileDWARF::ParseCompileUnitLineTable (const SymbolContext &sc)
1239 {
1240     assert (sc.comp_unit);
1241     if (sc.comp_unit->GetLineTable() != NULL)
1242         return true;
1243
1244     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1245     if (dwarf_cu)
1246     {
1247         const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->GetCompileUnitDIEOnly();
1248         if (dwarf_cu_die)
1249         {
1250             const dw_offset_t cu_line_offset = dwarf_cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET);
1251             if (cu_line_offset != DW_INVALID_OFFSET)
1252             {
1253                 std::unique_ptr<LineTable> line_table_ap(new LineTable(sc.comp_unit));
1254                 if (line_table_ap.get())
1255                 {
1256                     ParseDWARFLineTableCallbackInfo info;
1257                     info.line_table = line_table_ap.get();
1258                     lldb::offset_t offset = cu_line_offset;
1259                     DWARFDebugLine::ParseStatementTable(get_debug_line_data(), &offset, ParseDWARFLineTableCallback, &info);
1260                     if (m_debug_map_symfile)
1261                     {
1262                         // We have an object file that has a line table with addresses
1263                         // that are not linked. We need to link the line table and convert
1264                         // the addresses that are relative to the .o file into addresses
1265                         // for the main executable.
1266                         sc.comp_unit->SetLineTable (m_debug_map_symfile->LinkOSOLineTable (this, line_table_ap.get()));
1267                     }
1268                     else
1269                     {
1270                         sc.comp_unit->SetLineTable(line_table_ap.release());
1271                         return true;
1272                     }
1273                 }
1274             }
1275         }
1276     }
1277     return false;
1278 }
1279
1280 size_t
1281 SymbolFileDWARF::ParseFunctionBlocks
1282 (
1283     const SymbolContext& sc,
1284     Block *parent_block,
1285     DWARFCompileUnit* dwarf_cu,
1286     const DWARFDebugInfoEntry *die,
1287     addr_t subprogram_low_pc,
1288     uint32_t depth
1289 )
1290 {
1291     size_t blocks_added = 0;
1292     while (die != NULL)
1293     {
1294         dw_tag_t tag = die->Tag();
1295
1296         switch (tag)
1297         {
1298         case DW_TAG_inlined_subroutine:
1299         case DW_TAG_subprogram:
1300         case DW_TAG_lexical_block:
1301             {
1302                 Block *block = NULL;
1303                 if (tag == DW_TAG_subprogram)
1304                 {
1305                     // Skip any DW_TAG_subprogram DIEs that are inside
1306                     // of a normal or inlined functions. These will be
1307                     // parsed on their own as separate entities.
1308
1309                     if (depth > 0)
1310                         break;
1311
1312                     block = parent_block;
1313                 }
1314                 else
1315                 {
1316                     BlockSP block_sp(new Block (MakeUserID(die->GetOffset())));
1317                     parent_block->AddChild(block_sp);
1318                     block = block_sp.get();
1319                 }
1320                 DWARFDebugRanges::RangeList ranges;
1321                 const char *name = NULL;
1322                 const char *mangled_name = NULL;
1323
1324                 int decl_file = 0;
1325                 int decl_line = 0;
1326                 int decl_column = 0;
1327                 int call_file = 0;
1328                 int call_line = 0;
1329                 int call_column = 0;
1330                 if (die->GetDIENamesAndRanges (this,
1331                                                dwarf_cu,
1332                                                name,
1333                                                mangled_name,
1334                                                ranges,
1335                                                decl_file, decl_line, decl_column,
1336                                                call_file, call_line, call_column))
1337                 {
1338                     if (tag == DW_TAG_subprogram)
1339                     {
1340                         assert (subprogram_low_pc == LLDB_INVALID_ADDRESS);
1341                         subprogram_low_pc = ranges.GetMinRangeBase(0);
1342                     }
1343                     else if (tag == DW_TAG_inlined_subroutine)
1344                     {
1345                         // We get called here for inlined subroutines in two ways.
1346                         // The first time is when we are making the Function object
1347                         // for this inlined concrete instance.  Since we're creating a top level block at
1348                         // here, the subprogram_low_pc will be LLDB_INVALID_ADDRESS.  So we need to
1349                         // adjust the containing address.
1350                         // The second time is when we are parsing the blocks inside the function that contains
1351                         // the inlined concrete instance.  Since these will be blocks inside the containing "real"
1352                         // function the offset will be for that function.
1353                         if (subprogram_low_pc == LLDB_INVALID_ADDRESS)
1354                         {
1355                             subprogram_low_pc = ranges.GetMinRangeBase(0);
1356                         }
1357                     }
1358
1359                     AddRangesToBlock (*block, ranges, subprogram_low_pc);
1360
1361                     if (tag != DW_TAG_subprogram && (name != NULL || mangled_name != NULL))
1362                     {
1363                         std::unique_ptr<Declaration> decl_ap;
1364                         if (decl_file != 0 || decl_line != 0 || decl_column != 0)
1365                             decl_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file),
1366                                                           decl_line, decl_column));
1367
1368                         std::unique_ptr<Declaration> call_ap;
1369                         if (call_file != 0 || call_line != 0 || call_column != 0)
1370                             call_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(call_file),
1371                                                           call_line, call_column));
1372
1373                         block->SetInlinedFunctionInfo (name, mangled_name, decl_ap.get(), call_ap.get());
1374                     }
1375
1376                     ++blocks_added;
1377
1378                     if (die->HasChildren())
1379                     {
1380                         blocks_added += ParseFunctionBlocks (sc,
1381                                                              block,
1382                                                              dwarf_cu,
1383                                                              die->GetFirstChild(),
1384                                                              subprogram_low_pc,
1385                                                              depth + 1);
1386                     }
1387                 }
1388             }
1389             break;
1390         default:
1391             break;
1392         }
1393
1394         // Only parse siblings of the block if we are not at depth zero. A depth
1395         // of zero indicates we are currently parsing the top level
1396         // DW_TAG_subprogram DIE
1397
1398         if (depth == 0)
1399             die = NULL;
1400         else
1401             die = die->GetSibling();
1402     }
1403     return blocks_added;
1404 }
1405
1406 bool
1407 SymbolFileDWARF::ParseTemplateDIE (DWARFCompileUnit* dwarf_cu,
1408                                    const DWARFDebugInfoEntry *die,
1409                                    ClangASTContext::TemplateParameterInfos &template_param_infos)
1410 {
1411     const dw_tag_t tag = die->Tag();
1412
1413     switch (tag)
1414     {
1415     case DW_TAG_template_type_parameter:
1416     case DW_TAG_template_value_parameter:
1417         {
1418             const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
1419
1420             DWARFDebugInfoEntry::Attributes attributes;
1421             const size_t num_attributes = die->GetAttributes (this,
1422                                                               dwarf_cu,
1423                                                               fixed_form_sizes,
1424                                                               attributes);
1425             const char *name = NULL;
1426             Type *lldb_type = NULL;
1427             ClangASTType clang_type;
1428             uint64_t uval64 = 0;
1429             bool uval64_valid = false;
1430             if (num_attributes > 0)
1431             {
1432                 DWARFFormValue form_value;
1433                 for (size_t i=0; i<num_attributes; ++i)
1434                 {
1435                     const dw_attr_t attr = attributes.AttributeAtIndex(i);
1436
1437                     switch (attr)
1438                     {
1439                         case DW_AT_name:
1440                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1441                                 name = form_value.AsCString(&get_debug_str_data());
1442                             break;
1443
1444                         case DW_AT_type:
1445                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1446                             {
1447                                 const dw_offset_t type_die_offset = form_value.Reference(dwarf_cu);
1448                                 lldb_type = ResolveTypeUID(type_die_offset);
1449                                 if (lldb_type)
1450                                     clang_type = lldb_type->GetClangForwardType();
1451                             }
1452                             break;
1453
1454                         case DW_AT_const_value:
1455                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1456                             {
1457                                 uval64_valid = true;
1458                                 uval64 = form_value.Unsigned();
1459                             }
1460                             break;
1461                         default:
1462                             break;
1463                     }
1464                 }
1465
1466                 clang::ASTContext *ast = GetClangASTContext().getASTContext();
1467                 if (!clang_type)
1468                     clang_type = GetClangASTContext().GetBasicType(eBasicTypeVoid);
1469
1470                 if (clang_type)
1471                 {
1472                     bool is_signed = false;
1473                     if (name && name[0])
1474                         template_param_infos.names.push_back(name);
1475                     else
1476                         template_param_infos.names.push_back(NULL);
1477
1478                     if (tag == DW_TAG_template_value_parameter &&
1479                         lldb_type != NULL &&
1480                         clang_type.IsIntegerType (is_signed) &&
1481                         uval64_valid)
1482                     {
1483                         llvm::APInt apint (lldb_type->GetByteSize() * 8, uval64, is_signed);
1484                         template_param_infos.args.push_back (clang::TemplateArgument (*ast,
1485                                                                                       llvm::APSInt(apint),
1486                                                                                       clang_type.GetQualType()));
1487                     }
1488                     else
1489                     {
1490                         template_param_infos.args.push_back (clang::TemplateArgument (clang_type.GetQualType()));
1491                     }
1492                 }
1493                 else
1494                 {
1495                     return false;
1496                 }
1497
1498             }
1499         }
1500         return true;
1501
1502     default:
1503         break;
1504     }
1505     return false;
1506 }
1507
1508 bool
1509 SymbolFileDWARF::ParseTemplateParameterInfos (DWARFCompileUnit* dwarf_cu,
1510                                               const DWARFDebugInfoEntry *parent_die,
1511                                               ClangASTContext::TemplateParameterInfos &template_param_infos)
1512 {
1513
1514     if (parent_die == NULL)
1515         return false;
1516
1517     Args template_parameter_names;
1518     for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild();
1519          die != NULL;
1520          die = die->GetSibling())
1521     {
1522         const dw_tag_t tag = die->Tag();
1523
1524         switch (tag)
1525         {
1526             case DW_TAG_template_type_parameter:
1527             case DW_TAG_template_value_parameter:
1528                 ParseTemplateDIE (dwarf_cu, die, template_param_infos);
1529             break;
1530
1531         default:
1532             break;
1533         }
1534     }
1535     if (template_param_infos.args.empty())
1536         return false;
1537     return template_param_infos.args.size() == template_param_infos.names.size();
1538 }
1539
1540 clang::ClassTemplateDecl *
1541 SymbolFileDWARF::ParseClassTemplateDecl (clang::DeclContext *decl_ctx,
1542                                          lldb::AccessType access_type,
1543                                          const char *parent_name,
1544                                          int tag_decl_kind,
1545                                          const ClangASTContext::TemplateParameterInfos &template_param_infos)
1546 {
1547     if (template_param_infos.IsValid())
1548     {
1549         std::string template_basename(parent_name);
1550         template_basename.erase (template_basename.find('<'));
1551         ClangASTContext &ast = GetClangASTContext();
1552
1553         return ast.CreateClassTemplateDecl (decl_ctx,
1554                                             access_type,
1555                                             template_basename.c_str(),
1556                                             tag_decl_kind,
1557                                             template_param_infos);
1558     }
1559     return NULL;
1560 }
1561
1562 class SymbolFileDWARF::DelayedAddObjCClassProperty
1563 {
1564 public:
1565     DelayedAddObjCClassProperty
1566     (
1567         const ClangASTType     &class_opaque_type,
1568         const char             *property_name,
1569         const ClangASTType     &property_opaque_type,  // The property type is only required if you don't have an ivar decl
1570         clang::ObjCIvarDecl    *ivar_decl,
1571         const char             *property_setter_name,
1572         const char             *property_getter_name,
1573         uint32_t                property_attributes,
1574         const ClangASTMetadata *metadata
1575     ) :
1576         m_class_opaque_type     (class_opaque_type),
1577         m_property_name         (property_name),
1578         m_property_opaque_type  (property_opaque_type),
1579         m_ivar_decl             (ivar_decl),
1580         m_property_setter_name  (property_setter_name),
1581         m_property_getter_name  (property_getter_name),
1582         m_property_attributes   (property_attributes)
1583     {
1584         if (metadata != NULL)
1585         {
1586             m_metadata_ap.reset(new ClangASTMetadata());
1587             *m_metadata_ap = *metadata;
1588         }
1589     }
1590
1591     DelayedAddObjCClassProperty (const DelayedAddObjCClassProperty &rhs)
1592     {
1593         *this = rhs;
1594     }
1595
1596     DelayedAddObjCClassProperty& operator= (const DelayedAddObjCClassProperty &rhs)
1597     {
1598         m_class_opaque_type    = rhs.m_class_opaque_type;
1599         m_property_name        = rhs.m_property_name;
1600         m_property_opaque_type = rhs.m_property_opaque_type;
1601         m_ivar_decl            = rhs.m_ivar_decl;
1602         m_property_setter_name = rhs.m_property_setter_name;
1603         m_property_getter_name = rhs.m_property_getter_name;
1604         m_property_attributes  = rhs.m_property_attributes;
1605
1606         if (rhs.m_metadata_ap.get())
1607         {
1608             m_metadata_ap.reset (new ClangASTMetadata());
1609             *m_metadata_ap = *rhs.m_metadata_ap;
1610         }
1611         return *this;
1612     }
1613
1614     bool
1615     Finalize()
1616     {
1617         return m_class_opaque_type.AddObjCClassProperty (m_property_name,
1618                                                          m_property_opaque_type,
1619                                                          m_ivar_decl,
1620                                                          m_property_setter_name,
1621                                                          m_property_getter_name,
1622                                                          m_property_attributes,
1623                                                          m_metadata_ap.get());
1624     }
1625 private:
1626     ClangASTType            m_class_opaque_type;
1627     const char             *m_property_name;
1628     ClangASTType            m_property_opaque_type;
1629     clang::ObjCIvarDecl    *m_ivar_decl;
1630     const char             *m_property_setter_name;
1631     const char             *m_property_getter_name;
1632     uint32_t                m_property_attributes;
1633     std::unique_ptr<ClangASTMetadata> m_metadata_ap;
1634 };
1635
1636 struct BitfieldInfo
1637 {
1638     uint64_t bit_size;
1639     uint64_t bit_offset;
1640
1641     BitfieldInfo () :
1642         bit_size (LLDB_INVALID_ADDRESS),
1643         bit_offset (LLDB_INVALID_ADDRESS)
1644     {
1645     }
1646
1647     void
1648     Clear()
1649     {
1650         bit_size = LLDB_INVALID_ADDRESS;
1651         bit_offset = LLDB_INVALID_ADDRESS;
1652     }
1653
1654     bool IsValid ()
1655     {
1656         return (bit_size != LLDB_INVALID_ADDRESS) &&
1657                (bit_offset != LLDB_INVALID_ADDRESS);
1658     }
1659 };
1660
1661
1662 bool
1663 SymbolFileDWARF::ClassOrStructIsVirtual (DWARFCompileUnit* dwarf_cu,
1664                                          const DWARFDebugInfoEntry *parent_die)
1665 {
1666     if (parent_die)
1667     {
1668         for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
1669         {
1670             dw_tag_t tag = die->Tag();
1671             bool check_virtuality = false;
1672             switch (tag)
1673             {
1674                 case DW_TAG_inheritance:
1675                 case DW_TAG_subprogram:
1676                     check_virtuality = true;
1677                     break;
1678                 default:
1679                     break;
1680             }
1681             if (check_virtuality)
1682             {
1683                 if (die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_virtuality, 0) != 0)
1684                     return true;
1685             }
1686         }
1687     }
1688     return false;
1689 }
1690
1691 size_t
1692 SymbolFileDWARF::ParseChildMembers
1693 (
1694     const SymbolContext& sc,
1695     DWARFCompileUnit* dwarf_cu,
1696     const DWARFDebugInfoEntry *parent_die,
1697     ClangASTType &class_clang_type,
1698     const LanguageType class_language,
1699     std::vector<clang::CXXBaseSpecifier *>& base_classes,
1700     std::vector<int>& member_accessibilities,
1701     DWARFDIECollection& member_function_dies,
1702     DelayedPropertyList& delayed_properties,
1703     AccessType& default_accessibility,
1704     bool &is_a_class,
1705     LayoutInfo &layout_info
1706 )
1707 {
1708     if (parent_die == NULL)
1709         return 0;
1710
1711     size_t count = 0;
1712     const DWARFDebugInfoEntry *die;
1713     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
1714     uint32_t member_idx = 0;
1715     BitfieldInfo last_field_info;
1716     ModuleSP module = GetObjectFile()->GetModule();
1717
1718     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
1719     {
1720         dw_tag_t tag = die->Tag();
1721
1722         switch (tag)
1723         {
1724         case DW_TAG_member:
1725         case DW_TAG_APPLE_property:
1726             {
1727                 DWARFDebugInfoEntry::Attributes attributes;
1728                 const size_t num_attributes = die->GetAttributes (this,
1729                                                                   dwarf_cu,
1730                                                                   fixed_form_sizes,
1731                                                                   attributes);
1732                 if (num_attributes > 0)
1733                 {
1734                     Declaration decl;
1735                     //DWARFExpression location;
1736                     const char *name = NULL;
1737                     const char *prop_name = NULL;
1738                     const char *prop_getter_name = NULL;
1739                     const char *prop_setter_name = NULL;
1740                     uint32_t prop_attributes = 0;
1741
1742
1743                     bool is_artificial = false;
1744                     lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
1745                     AccessType accessibility = eAccessNone;
1746                     uint32_t member_byte_offset = UINT32_MAX;
1747                     size_t byte_size = 0;
1748                     size_t bit_offset = 0;
1749                     size_t bit_size = 0;
1750                     bool is_external = false; // On DW_TAG_members, this means the member is static
1751                     uint32_t i;
1752                     for (i=0; i<num_attributes && !is_artificial; ++i)
1753                     {
1754                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
1755                         DWARFFormValue form_value;
1756                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1757                         {
1758                             switch (attr)
1759                             {
1760                             case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
1761                             case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
1762                             case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
1763                             case DW_AT_name:        name = form_value.AsCString(&get_debug_str_data()); break;
1764                             case DW_AT_type:        encoding_uid = form_value.Reference(dwarf_cu); break;
1765                             case DW_AT_bit_offset:  bit_offset = form_value.Unsigned(); break;
1766                             case DW_AT_bit_size:    bit_size = form_value.Unsigned(); break;
1767                             case DW_AT_byte_size:   byte_size = form_value.Unsigned(); break;
1768                             case DW_AT_data_member_location:
1769                                 if (form_value.BlockData())
1770                                 {
1771                                     Value initialValue(0);
1772                                     Value memberOffset(0);
1773                                     const DWARFDataExtractor& debug_info_data = get_debug_info_data();
1774                                     uint32_t block_length = form_value.Unsigned();
1775                                     uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
1776                                     if (DWARFExpression::Evaluate(NULL, // ExecutionContext *
1777                                                                   NULL, // ClangExpressionVariableList *
1778                                                                   NULL, // ClangExpressionDeclMap *
1779                                                                   NULL, // RegisterContext *
1780                                                                   module,
1781                                                                   debug_info_data,
1782                                                                   block_offset,
1783                                                                   block_length,
1784                                                                   eRegisterKindDWARF,
1785                                                                   &initialValue,
1786                                                                   memberOffset,
1787                                                                   NULL))
1788                                     {
1789                                         member_byte_offset = memberOffset.ResolveValue(NULL).UInt();
1790                                     }
1791                                 }
1792                                 else
1793                                 {
1794                                     // With DWARF 3 and later, if the value is an integer constant,
1795                                     // this form value is the offset in bytes from the beginning
1796                                     // of the containing entity.
1797                                     member_byte_offset = form_value.Unsigned();
1798                                 }
1799                                 break;
1800
1801                             case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType (form_value.Unsigned()); break;
1802                             case DW_AT_artificial: is_artificial = form_value.Boolean(); break;
1803                             case DW_AT_APPLE_property_name:      prop_name = form_value.AsCString(&get_debug_str_data()); break;
1804                             case DW_AT_APPLE_property_getter:    prop_getter_name = form_value.AsCString(&get_debug_str_data()); break;
1805                             case DW_AT_APPLE_property_setter:    prop_setter_name = form_value.AsCString(&get_debug_str_data()); break;
1806                             case DW_AT_APPLE_property_attribute: prop_attributes = form_value.Unsigned(); break;
1807                             case DW_AT_external:                 is_external = form_value.Boolean(); break;
1808
1809                             default:
1810                             case DW_AT_declaration:
1811                             case DW_AT_description:
1812                             case DW_AT_mutable:
1813                             case DW_AT_visibility:
1814                             case DW_AT_sibling:
1815                                 break;
1816                             }
1817                         }
1818                     }
1819
1820                     if (prop_name)
1821                     {
1822                         ConstString fixed_getter;
1823                         ConstString fixed_setter;
1824
1825                         // Check if the property getter/setter were provided as full
1826                         // names.  We want basenames, so we extract them.
1827
1828                         if (prop_getter_name && prop_getter_name[0] == '-')
1829                         {
1830                             ObjCLanguageRuntime::MethodName prop_getter_method(prop_getter_name, true);
1831                             prop_getter_name = prop_getter_method.GetSelector().GetCString();
1832                         }
1833
1834                         if (prop_setter_name && prop_setter_name[0] == '-')
1835                         {
1836                             ObjCLanguageRuntime::MethodName prop_setter_method(prop_setter_name, true);
1837                             prop_setter_name = prop_setter_method.GetSelector().GetCString();
1838                         }
1839
1840                         // If the names haven't been provided, they need to be
1841                         // filled in.
1842
1843                         if (!prop_getter_name)
1844                         {
1845                             prop_getter_name = prop_name;
1846                         }
1847                         if (!prop_setter_name && prop_name[0] && !(prop_attributes & DW_APPLE_PROPERTY_readonly))
1848                         {
1849                             StreamString ss;
1850
1851                             ss.Printf("set%c%s:",
1852                                       toupper(prop_name[0]),
1853                                       &prop_name[1]);
1854
1855                             fixed_setter.SetCString(ss.GetData());
1856                             prop_setter_name = fixed_setter.GetCString();
1857                         }
1858                     }
1859
1860                     // Clang has a DWARF generation bug where sometimes it
1861                     // represents fields that are references with bad byte size
1862                     // and bit size/offset information such as:
1863                     //
1864                     //  DW_AT_byte_size( 0x00 )
1865                     //  DW_AT_bit_size( 0x40 )
1866                     //  DW_AT_bit_offset( 0xffffffffffffffc0 )
1867                     //
1868                     // So check the bit offset to make sure it is sane, and if
1869                     // the values are not sane, remove them. If we don't do this
1870                     // then we will end up with a crash if we try to use this
1871                     // type in an expression when clang becomes unhappy with its
1872                     // recycled debug info.
1873
1874                     if (bit_offset > 128)
1875                     {
1876                         bit_size = 0;
1877                         bit_offset = 0;
1878                     }
1879
1880                     // FIXME: Make Clang ignore Objective-C accessibility for expressions
1881                     if (class_language == eLanguageTypeObjC ||
1882                         class_language == eLanguageTypeObjC_plus_plus)
1883                         accessibility = eAccessNone;
1884
1885                     if (member_idx == 0 && !is_artificial && name && (strstr (name, "_vptr$") == name))
1886                     {
1887                         // Not all compilers will mark the vtable pointer
1888                         // member as artificial (llvm-gcc). We can't have
1889                         // the virtual members in our classes otherwise it
1890                         // throws off all child offsets since we end up
1891                         // having and extra pointer sized member in our
1892                         // class layouts.
1893                         is_artificial = true;
1894                     }
1895
1896                     // Handle static members
1897                     if (is_external && member_byte_offset == UINT32_MAX)
1898                     {
1899                         Type *var_type = ResolveTypeUID(encoding_uid);
1900
1901                         if (var_type)
1902                         {
1903                             if (accessibility == eAccessNone)
1904                                 accessibility = eAccessPublic;
1905                             class_clang_type.AddVariableToRecordType (name,
1906                                                                       var_type->GetClangLayoutType(),
1907                                                                       accessibility);
1908                         }
1909                         break;
1910                     }
1911
1912                     if (is_artificial == false)
1913                     {
1914                         Type *member_type = ResolveTypeUID(encoding_uid);
1915
1916                         clang::FieldDecl *field_decl = NULL;
1917                         if (tag == DW_TAG_member)
1918                         {
1919                             if (member_type)
1920                             {
1921                                 if (accessibility == eAccessNone)
1922                                     accessibility = default_accessibility;
1923                                 member_accessibilities.push_back(accessibility);
1924
1925                                 uint64_t field_bit_offset = (member_byte_offset == UINT32_MAX ? 0 : (member_byte_offset * 8));
1926                                 if (bit_size > 0)
1927                                 {
1928
1929                                     BitfieldInfo this_field_info;
1930                                     this_field_info.bit_offset = field_bit_offset;
1931                                     this_field_info.bit_size = bit_size;
1932
1933                                     /////////////////////////////////////////////////////////////
1934                                     // How to locate a field given the DWARF debug information
1935                                     //
1936                                     // AT_byte_size indicates the size of the word in which the
1937                                     // bit offset must be interpreted.
1938                                     //
1939                                     // AT_data_member_location indicates the byte offset of the
1940                                     // word from the base address of the structure.
1941                                     //
1942                                     // AT_bit_offset indicates how many bits into the word
1943                                     // (according to the host endianness) the low-order bit of
1944                                     // the field starts.  AT_bit_offset can be negative.
1945                                     //
1946                                     // AT_bit_size indicates the size of the field in bits.
1947                                     /////////////////////////////////////////////////////////////
1948
1949                                     if (byte_size == 0)
1950                                         byte_size = member_type->GetByteSize();
1951
1952                                     if (GetObjectFile()->GetByteOrder() == eByteOrderLittle)
1953                                     {
1954                                         this_field_info.bit_offset += byte_size * 8;
1955                                         this_field_info.bit_offset -= (bit_offset + bit_size);
1956                                     }
1957                                     else
1958                                     {
1959                                         this_field_info.bit_offset += bit_offset;
1960                                     }
1961
1962                                     // Update the field bit offset we will report for layout
1963                                     field_bit_offset = this_field_info.bit_offset;
1964
1965                                     // If the member to be emitted did not start on a character boundary and there is
1966                                     // empty space between the last field and this one, then we need to emit an
1967                                     // anonymous member filling up the space up to its start.  There are three cases
1968                                     // here:
1969                                     //
1970                                     // 1 If the previous member ended on a character boundary, then we can emit an
1971                                     //   anonymous member starting at the most recent character boundary.
1972                                     //
1973                                     // 2 If the previous member did not end on a character boundary and the distance
1974                                     //   from the end of the previous member to the current member is less than a
1975                                     //   word width, then we can emit an anonymous member starting right after the
1976                                     //   previous member and right before this member.
1977                                     //
1978                                     // 3 If the previous member did not end on a character boundary and the distance
1979                                     //   from the end of the previous member to the current member is greater than
1980                                     //   or equal a word width, then we act as in Case 1.
1981
1982                                     const uint64_t character_width = 8;
1983                                     const uint64_t word_width = 32;
1984
1985                                     // Objective-C has invalid DW_AT_bit_offset values in older versions
1986                                     // of clang, so we have to be careful and only insert unnammed bitfields
1987                                     // if we have a new enough clang.
1988                                     bool detect_unnamed_bitfields = true;
1989
1990                                     if (class_language == eLanguageTypeObjC || class_language == eLanguageTypeObjC_plus_plus)
1991                                         detect_unnamed_bitfields = dwarf_cu->Supports_unnamed_objc_bitfields ();
1992
1993                                     if (detect_unnamed_bitfields)
1994                                     {
1995                                         BitfieldInfo anon_field_info;
1996
1997                                         if ((this_field_info.bit_offset % character_width) != 0) // not char aligned
1998                                         {
1999                                             uint64_t last_field_end = 0;
2000
2001                                             if (last_field_info.IsValid())
2002                                                 last_field_end = last_field_info.bit_offset + last_field_info.bit_size;
2003
2004                                             if (this_field_info.bit_offset != last_field_end)
2005                                             {
2006                                                 if (((last_field_end % character_width) == 0) ||                    // case 1
2007                                                     (this_field_info.bit_offset - last_field_end >= word_width))    // case 3
2008                                                 {
2009                                                     anon_field_info.bit_size = this_field_info.bit_offset % character_width;
2010                                                     anon_field_info.bit_offset = this_field_info.bit_offset - anon_field_info.bit_size;
2011                                                 }
2012                                                 else                                                                // case 2
2013                                                 {
2014                                                     anon_field_info.bit_size = this_field_info.bit_offset - last_field_end;
2015                                                     anon_field_info.bit_offset = last_field_end;
2016                                                 }
2017                                             }
2018                                         }
2019
2020                                         if (anon_field_info.IsValid())
2021                                         {
2022                                             clang::FieldDecl *unnamed_bitfield_decl = class_clang_type.AddFieldToRecordType (NULL,
2023                                                                                                                              GetClangASTContext().GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, word_width),
2024                                                                                                                              accessibility,
2025                                                                                                                              anon_field_info.bit_size);
2026
2027                                             layout_info.field_offsets.insert(std::make_pair(unnamed_bitfield_decl, anon_field_info.bit_offset));
2028                                         }
2029                                     }
2030                                     last_field_info = this_field_info;
2031                                 }
2032                                 else
2033                                 {
2034                                     last_field_info.Clear();
2035                                 }
2036
2037                                 ClangASTType member_clang_type = member_type->GetClangLayoutType();
2038
2039                                 {
2040                                     // Older versions of clang emit array[0] and array[1] in the same way (<rdar://problem/12566646>).
2041                                     // If the current field is at the end of the structure, then there is definitely no room for extra
2042                                     // elements and we override the type to array[0].
2043
2044                                     ClangASTType member_array_element_type;
2045                                     uint64_t member_array_size;
2046                                     bool member_array_is_incomplete;
2047
2048                                     if (member_clang_type.IsArrayType(&member_array_element_type,
2049                                                                       &member_array_size,
2050                                                                       &member_array_is_incomplete) &&
2051                                         !member_array_is_incomplete)
2052                                     {
2053                                         uint64_t parent_byte_size = parent_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, UINT64_MAX);
2054
2055                                         if (member_byte_offset >= parent_byte_size)
2056                                         {
2057                                             if (member_array_size != 1)
2058                                             {
2059                                                 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,
2060                                                                                            MakeUserID(die->GetOffset()),
2061                                                                                            name,
2062                                                                                            encoding_uid,
2063                                                                                            MakeUserID(parent_die->GetOffset()));
2064                                             }
2065
2066                                             member_clang_type = GetClangASTContext().CreateArrayType(member_array_element_type, 0, false);
2067                                         }
2068                                     }
2069                                 }
2070
2071                                 field_decl = class_clang_type.AddFieldToRecordType (name,
2072                                                                                     member_clang_type,
2073                                                                                     accessibility,
2074                                                                                     bit_size);
2075
2076                                 GetClangASTContext().SetMetadataAsUserID (field_decl, MakeUserID(die->GetOffset()));
2077
2078                                 layout_info.field_offsets.insert(std::make_pair(field_decl, field_bit_offset));
2079
2080                             }
2081                             else
2082                             {
2083                                 if (name)
2084                                     GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 " which was unable to be parsed",
2085                                                                                MakeUserID(die->GetOffset()),
2086                                                                                name,
2087                                                                                encoding_uid);
2088                                 else
2089                                     GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member refers to type 0x%8.8" PRIx64 " which was unable to be parsed",
2090                                                                                MakeUserID(die->GetOffset()),
2091                                                                                encoding_uid);
2092                             }
2093                         }
2094
2095                         if (prop_name != NULL)
2096                         {
2097                             clang::ObjCIvarDecl *ivar_decl = NULL;
2098
2099                             if (field_decl)
2100                             {
2101                                 ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl);
2102                                 assert (ivar_decl != NULL);
2103                             }
2104
2105                             ClangASTMetadata metadata;
2106                             metadata.SetUserID (MakeUserID(die->GetOffset()));
2107                             delayed_properties.push_back(DelayedAddObjCClassProperty(class_clang_type,
2108                                                                                      prop_name,
2109                                                                                      member_type->GetClangLayoutType(),
2110                                                                                      ivar_decl,
2111                                                                                      prop_setter_name,
2112                                                                                      prop_getter_name,
2113                                                                                      prop_attributes,
2114                                                                                      &metadata));
2115
2116                             if (ivar_decl)
2117                                 GetClangASTContext().SetMetadataAsUserID (ivar_decl, MakeUserID(die->GetOffset()));
2118                         }
2119                     }
2120                 }
2121                 ++member_idx;
2122             }
2123             break;
2124
2125         case DW_TAG_subprogram:
2126             // Let the type parsing code handle this one for us.
2127             member_function_dies.Append (die);
2128             break;
2129
2130         case DW_TAG_inheritance:
2131             {
2132                 is_a_class = true;
2133                 if (default_accessibility == eAccessNone)
2134                     default_accessibility = eAccessPrivate;
2135                 // TODO: implement DW_TAG_inheritance type parsing
2136                 DWARFDebugInfoEntry::Attributes attributes;
2137                 const size_t num_attributes = die->GetAttributes (this,
2138                                                                   dwarf_cu,
2139                                                                   fixed_form_sizes,
2140                                                                   attributes);
2141                 if (num_attributes > 0)
2142                 {
2143                     Declaration decl;
2144                     DWARFExpression location;
2145                     lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
2146                     AccessType accessibility = default_accessibility;
2147                     bool is_virtual = false;
2148                     bool is_base_of_class = true;
2149                     off_t member_byte_offset = 0;
2150                     uint32_t i;
2151                     for (i=0; i<num_attributes; ++i)
2152                     {
2153                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
2154                         DWARFFormValue form_value;
2155                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
2156                         {
2157                             switch (attr)
2158                             {
2159                             case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
2160                             case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
2161                             case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
2162                             case DW_AT_type:        encoding_uid = form_value.Reference(dwarf_cu); break;
2163                             case DW_AT_data_member_location:
2164                                 if (form_value.BlockData())
2165                                 {
2166                                     Value initialValue(0);
2167                                     Value memberOffset(0);
2168                                     const DWARFDataExtractor& debug_info_data = get_debug_info_data();
2169                                     uint32_t block_length = form_value.Unsigned();
2170                                     uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
2171                                     if (DWARFExpression::Evaluate (NULL,
2172                                                                    NULL,
2173                                                                    NULL,
2174                                                                    NULL,
2175                                                                    module,
2176                                                                    debug_info_data,
2177                                                                    block_offset,
2178                                                                    block_length,
2179                                                                    eRegisterKindDWARF,
2180                                                                    &initialValue,
2181                                                                    memberOffset,
2182                                                                    NULL))
2183                                     {
2184                                         member_byte_offset = memberOffset.ResolveValue(NULL).UInt();
2185                                     }
2186                                 }
2187                                 else
2188                                 {
2189                                     // With DWARF 3 and later, if the value is an integer constant,
2190                                     // this form value is the offset in bytes from the beginning
2191                                     // of the containing entity.
2192                                     member_byte_offset = form_value.Unsigned();
2193                                 }
2194                                 break;
2195
2196                             case DW_AT_accessibility:
2197                                 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
2198                                 break;
2199
2200                             case DW_AT_virtuality:
2201                                 is_virtual = form_value.Boolean();
2202                                 break;
2203
2204                             case DW_AT_sibling:
2205                                 break;
2206
2207                             default:
2208                                 break;
2209                             }
2210                         }
2211                     }
2212
2213                     Type *base_class_type = ResolveTypeUID(encoding_uid);
2214                     assert(base_class_type);
2215
2216                     ClangASTType base_class_clang_type = base_class_type->GetClangFullType();
2217                     assert (base_class_clang_type);
2218                     if (class_language == eLanguageTypeObjC)
2219                     {
2220                         class_clang_type.SetObjCSuperClass(base_class_clang_type);
2221                     }
2222                     else
2223                     {
2224                         base_classes.push_back (base_class_clang_type.CreateBaseClassSpecifier (accessibility,
2225                                                                                                is_virtual,
2226                                                                                                is_base_of_class));
2227
2228                         if (is_virtual)
2229                         {
2230                             // Do not specify any offset for virtual inheritance. The DWARF produced by clang doesn't
2231                             // give us a constant offset, but gives us a DWARF expressions that requires an actual object
2232                             // in memory. the DW_AT_data_member_location for a virtual base class looks like:
2233                             //      DW_AT_data_member_location( DW_OP_dup, DW_OP_deref, DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref, DW_OP_plus )
2234                             // Given this, there is really no valid response we can give to clang for virtual base
2235                             // class offsets, and this should eventually be removed from LayoutRecordType() in the external
2236                             // AST source in clang.
2237                         }
2238                         else
2239                         {
2240                             layout_info.base_offsets.insert(std::make_pair(base_class_clang_type.GetAsCXXRecordDecl(),
2241                                                                            clang::CharUnits::fromQuantity(member_byte_offset)));
2242                         }
2243                     }
2244                 }
2245             }
2246             break;
2247
2248         default:
2249             break;
2250         }
2251     }
2252
2253     return count;
2254 }
2255
2256
2257 clang::DeclContext*
2258 SymbolFileDWARF::GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid)
2259 {
2260     DWARFDebugInfo* debug_info = DebugInfo();
2261     if (debug_info && UserIDMatches(type_uid))
2262     {
2263         DWARFCompileUnitSP cu_sp;
2264         const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(type_uid, &cu_sp);
2265         if (die)
2266             return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL);
2267     }
2268     return NULL;
2269 }
2270
2271 clang::DeclContext*
2272 SymbolFileDWARF::GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid)
2273 {
2274     if (UserIDMatches(type_uid))
2275         return GetClangDeclContextForDIEOffset (sc, type_uid);
2276     return NULL;
2277 }
2278
2279 Type*
2280 SymbolFileDWARF::ResolveTypeUID (lldb::user_id_t type_uid)
2281 {
2282     if (UserIDMatches(type_uid))
2283     {
2284         DWARFDebugInfo* debug_info = DebugInfo();
2285         if (debug_info)
2286         {
2287             DWARFCompileUnitSP cu_sp;
2288             const DWARFDebugInfoEntry* type_die = debug_info->GetDIEPtr(type_uid, &cu_sp);
2289             const bool assert_not_being_parsed = true;
2290             return ResolveTypeUID (cu_sp.get(), type_die, assert_not_being_parsed);
2291         }
2292     }
2293     return NULL;
2294 }
2295
2296 Type*
2297 SymbolFileDWARF::ResolveTypeUID (DWARFCompileUnit* cu, const DWARFDebugInfoEntry* die, bool assert_not_being_parsed)
2298 {
2299     if (die != NULL)
2300     {
2301         Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
2302         if (log)
2303             GetObjectFile()->GetModule()->LogMessage (log,
2304                                                       "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s'",
2305                                                       die->GetOffset(),
2306                                                       DW_TAG_value_to_name(die->Tag()),
2307                                                       die->GetName(this, cu));
2308
2309         // We might be coming in in the middle of a type tree (a class
2310         // withing a class, an enum within a class), so parse any needed
2311         // parent DIEs before we get to this one...
2312         const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die);
2313         switch (decl_ctx_die->Tag())
2314         {
2315             case DW_TAG_structure_type:
2316             case DW_TAG_union_type:
2317             case DW_TAG_class_type:
2318             {
2319                 // Get the type, which could be a forward declaration
2320                 if (log)
2321                     GetObjectFile()->GetModule()->LogMessage (log,
2322                                                               "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent forward type for 0x%8.8x",
2323                                                               die->GetOffset(),
2324                                                               DW_TAG_value_to_name(die->Tag()),
2325                                                               die->GetName(this, cu),
2326                                                               decl_ctx_die->GetOffset());
2327 //
2328 //                Type *parent_type = ResolveTypeUID (cu, decl_ctx_die, assert_not_being_parsed);
2329 //                if (child_requires_parent_class_union_or_struct_to_be_completed(die->Tag()))
2330 //                {
2331 //                    if (log)
2332 //                        GetObjectFile()->GetModule()->LogMessage (log,
2333 //                                                                  "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent full type for 0x%8.8x since die is a function",
2334 //                                                                  die->GetOffset(),
2335 //                                                                  DW_TAG_value_to_name(die->Tag()),
2336 //                                                                  die->GetName(this, cu),
2337 //                                                                  decl_ctx_die->GetOffset());
2338 //                    // Ask the type to complete itself if it already hasn't since if we
2339 //                    // want a function (method or static) from a class, the class must
2340 //                    // create itself and add it's own methods and class functions.
2341 //                    if (parent_type)
2342 //                        parent_type->GetClangFullType();
2343 //                }
2344             }
2345             break;
2346
2347             default:
2348                 break;
2349         }
2350         return ResolveType (cu, die);
2351     }
2352     return NULL;
2353 }
2354
2355 // This function is used when SymbolFileDWARFDebugMap owns a bunch of
2356 // SymbolFileDWARF objects to detect if this DWARF file is the one that
2357 // can resolve a clang_type.
2358 bool
2359 SymbolFileDWARF::HasForwardDeclForClangType (const ClangASTType &clang_type)
2360 {
2361     ClangASTType clang_type_no_qualifiers = clang_type.RemoveFastQualifiers();
2362     const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers.GetOpaqueQualType());
2363     return die != NULL;
2364 }
2365
2366
2367 bool
2368 SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (ClangASTType &clang_type)
2369 {
2370     // We have a struct/union/class/enum that needs to be fully resolved.
2371     ClangASTType clang_type_no_qualifiers = clang_type.RemoveFastQualifiers();
2372     const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers.GetOpaqueQualType());
2373     if (die == NULL)
2374     {
2375         // We have already resolved this type...
2376         return true;
2377     }
2378     // Once we start resolving this type, remove it from the forward declaration
2379     // map in case anyone child members or other types require this type to get resolved.
2380     // The type will get resolved when all of the calls to SymbolFileDWARF::ResolveClangOpaqueTypeDefinition
2381     // are done.
2382     m_forward_decl_clang_type_to_die.erase (clang_type_no_qualifiers.GetOpaqueQualType());
2383
2384
2385     // Disable external storage for this type so we don't get anymore
2386     // clang::ExternalASTSource queries for this type.
2387     clang_type.SetHasExternalStorage (false);
2388
2389     DWARFDebugInfo* debug_info = DebugInfo();
2390
2391     DWARFCompileUnit *dwarf_cu = debug_info->GetCompileUnitContainingDIE (die->GetOffset()).get();
2392     Type *type = m_die_to_type.lookup (die);
2393
2394     const dw_tag_t tag = die->Tag();
2395
2396     Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION));
2397     if (log)
2398     {
2399         GetObjectFile()->GetModule()->LogMessageVerboseBacktrace (log,
2400                                                                   "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...",
2401                                                                   MakeUserID(die->GetOffset()),
2402                                                                   DW_TAG_value_to_name(tag),
2403                                                                   type->GetName().AsCString());
2404
2405     }
2406     assert (clang_type);
2407     DWARFDebugInfoEntry::Attributes attributes;
2408
2409     switch (tag)
2410     {
2411     case DW_TAG_structure_type:
2412     case DW_TAG_union_type:
2413     case DW_TAG_class_type:
2414         {
2415             LayoutInfo layout_info;
2416
2417             {
2418                 if (die->HasChildren())
2419                 {
2420
2421                     LanguageType class_language = eLanguageTypeUnknown;
2422                     if (clang_type.IsObjCObjectOrInterfaceType())
2423                     {
2424                         class_language = eLanguageTypeObjC;
2425                         // For objective C we don't start the definition when
2426                         // the class is created.
2427                         clang_type.StartTagDeclarationDefinition ();
2428                     }
2429
2430                     int tag_decl_kind = -1;
2431                     AccessType default_accessibility = eAccessNone;
2432                     if (tag == DW_TAG_structure_type)
2433                     {
2434                         tag_decl_kind = clang::TTK_Struct;
2435                         default_accessibility = eAccessPublic;
2436                     }
2437                     else if (tag == DW_TAG_union_type)
2438                     {
2439                         tag_decl_kind = clang::TTK_Union;
2440                         default_accessibility = eAccessPublic;
2441                     }
2442                     else if (tag == DW_TAG_class_type)
2443                     {
2444                         tag_decl_kind = clang::TTK_Class;
2445                         default_accessibility = eAccessPrivate;
2446                     }
2447
2448                     SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
2449                     std::vector<clang::CXXBaseSpecifier *> base_classes;
2450                     std::vector<int> member_accessibilities;
2451                     bool is_a_class = false;
2452                     // Parse members and base classes first
2453                     DWARFDIECollection member_function_dies;
2454
2455                     DelayedPropertyList delayed_properties;
2456                     ParseChildMembers (sc,
2457                                        dwarf_cu,
2458                                        die,
2459                                        clang_type,
2460                                        class_language,
2461                                        base_classes,
2462                                        member_accessibilities,
2463                                        member_function_dies,
2464                                        delayed_properties,
2465                                        default_accessibility,
2466                                        is_a_class,
2467                                        layout_info);
2468
2469                     // Now parse any methods if there were any...
2470                     size_t num_functions = member_function_dies.Size();
2471                     if (num_functions > 0)
2472                     {
2473                         for (size_t i=0; i<num_functions; ++i)
2474                         {
2475                             ResolveType(dwarf_cu, member_function_dies.GetDIEPtrAtIndex(i));
2476                         }
2477                     }
2478
2479                     if (class_language == eLanguageTypeObjC)
2480                     {
2481                         ConstString class_name (clang_type.GetTypeName());
2482                         if (class_name)
2483                         {
2484
2485                             DIEArray method_die_offsets;
2486                             if (m_using_apple_tables)
2487                             {
2488                                 if (m_apple_objc_ap.get())
2489                                     m_apple_objc_ap->FindByName(class_name.GetCString(), method_die_offsets);
2490                             }
2491                             else
2492                             {
2493                                 if (!m_indexed)
2494                                     Index ();
2495
2496                                 m_objc_class_selectors_index.Find (class_name, method_die_offsets);
2497                             }
2498
2499                             if (!method_die_offsets.empty())
2500                             {
2501                                 DWARFDebugInfo* debug_info = DebugInfo();
2502
2503                                 DWARFCompileUnit* method_cu = NULL;
2504                                 const size_t num_matches = method_die_offsets.size();
2505                                 for (size_t i=0; i<num_matches; ++i)
2506                                 {
2507                                     const dw_offset_t die_offset = method_die_offsets[i];
2508                                     DWARFDebugInfoEntry *method_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &method_cu);
2509
2510                                     if (method_die)
2511                                         ResolveType (method_cu, method_die);
2512                                     else
2513                                     {
2514                                         if (m_using_apple_tables)
2515                                         {
2516                                             GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_objc accelerator table had bad die 0x%8.8x for '%s')\n",
2517                                                                                                        die_offset, class_name.GetCString());
2518                                         }
2519                                     }
2520                                 }
2521                             }
2522
2523                             for (DelayedPropertyList::iterator pi = delayed_properties.begin(), pe = delayed_properties.end();
2524                                  pi != pe;
2525                                  ++pi)
2526                                 pi->Finalize();
2527                         }
2528                     }
2529
2530                     // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we
2531                     // need to tell the clang type it is actually a class.
2532                     if (class_language != eLanguageTypeObjC)
2533                     {
2534                         if (is_a_class && tag_decl_kind != clang::TTK_Class)
2535                             clang_type.SetTagTypeKind (clang::TTK_Class);
2536                     }
2537
2538                     // Since DW_TAG_structure_type gets used for both classes
2539                     // and structures, we may need to set any DW_TAG_member
2540                     // fields to have a "private" access if none was specified.
2541                     // When we parsed the child members we tracked that actual
2542                     // accessibility value for each DW_TAG_member in the
2543                     // "member_accessibilities" array. If the value for the
2544                     // member is zero, then it was set to the "default_accessibility"
2545                     // which for structs was "public". Below we correct this
2546                     // by setting any fields to "private" that weren't correctly
2547                     // set.
2548                     if (is_a_class && !member_accessibilities.empty())
2549                     {
2550                         // This is a class and all members that didn't have
2551                         // their access specified are private.
2552                         clang_type.SetDefaultAccessForRecordFields (eAccessPrivate,
2553                                                                     &member_accessibilities.front(),
2554                                                                     member_accessibilities.size());
2555                     }
2556
2557                     if (!base_classes.empty())
2558                     {
2559                         // Make sure all base classes refer to complete types and not
2560                         // forward declarations. If we don't do this, clang will crash
2561                         // with an assertion in the call to clang_type.SetBaseClassesForClassType()
2562                         bool base_class_error = false;
2563                         for (auto &base_class : base_classes)
2564                         {
2565                             clang::TypeSourceInfo *type_source_info = base_class->getTypeSourceInfo();
2566                             if (type_source_info)
2567                             {
2568                                 ClangASTType base_class_type (GetClangASTContext().getASTContext(), type_source_info->getType());
2569                                 if (base_class_type.GetCompleteType() == false)
2570                                 {
2571                                     if (!base_class_error)
2572                                     {
2573                                         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",
2574                                                                                    die->GetOffset(),
2575                                                                                    die->GetName(this, dwarf_cu),
2576                                                                                    base_class_type.GetTypeName().GetCString(),
2577                                                                                    sc.comp_unit ? sc.comp_unit->GetPath().c_str() : "the source file");
2578                                     }
2579                                     // We have no choice other than to pretend that the base class
2580                                     // is complete. If we don't do this, clang will crash when we
2581                                     // call setBases() inside of "clang_type.SetBaseClassesForClassType()"
2582                                     // below. Since we provide layout assistance, all ivars in this
2583                                     // class and other classe will be fine, this is the best we can do
2584                                     // short of crashing.
2585                                     base_class_type.StartTagDeclarationDefinition ();
2586                                     base_class_type.CompleteTagDeclarationDefinition ();
2587                                 }
2588                             }
2589                         }
2590                         clang_type.SetBaseClassesForClassType (&base_classes.front(),
2591                                                                base_classes.size());
2592
2593                         // Clang will copy each CXXBaseSpecifier in "base_classes"
2594                         // so we have to free them all.
2595                         ClangASTType::DeleteBaseClassSpecifiers (&base_classes.front(),
2596                                                                  base_classes.size());
2597                     }
2598                 }
2599             }
2600
2601             clang_type.BuildIndirectFields ();
2602             clang_type.CompleteTagDeclarationDefinition ();
2603
2604             if (!layout_info.field_offsets.empty() ||
2605                 !layout_info.base_offsets.empty()  ||
2606                 !layout_info.vbase_offsets.empty() )
2607             {
2608                 if (type)
2609                     layout_info.bit_size = type->GetByteSize() * 8;
2610                 if (layout_info.bit_size == 0)
2611                     layout_info.bit_size = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, 0) * 8;
2612
2613                 clang::CXXRecordDecl *record_decl = clang_type.GetAsCXXRecordDecl();
2614                 if (record_decl)
2615                 {
2616                     if (log)
2617                     {
2618                         GetObjectFile()->GetModule()->LogMessage (log,
2619                                                                   "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])",
2620                                                                   clang_type.GetOpaqueQualType(),
2621                                                                   record_decl,
2622                                                                   layout_info.bit_size,
2623                                                                   layout_info.alignment,
2624                                                                   (uint32_t)layout_info.field_offsets.size(),
2625                                                                   (uint32_t)layout_info.base_offsets.size(),
2626                                                                   (uint32_t)layout_info.vbase_offsets.size());
2627
2628                         uint32_t idx;
2629                         {
2630                         llvm::DenseMap <const clang::FieldDecl *, uint64_t>::const_iterator pos, end = layout_info.field_offsets.end();
2631                         for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; ++pos, ++idx)
2632                         {
2633                             GetObjectFile()->GetModule()->LogMessage (log,
2634                                                                       "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) field[%u] = { bit_offset=%u, name='%s' }",
2635                                                                       clang_type.GetOpaqueQualType(),
2636                                                                       idx,
2637                                                                       (uint32_t)pos->second,
2638                                                                       pos->first->getNameAsString().c_str());
2639                         }
2640                         }
2641
2642                         {
2643                         llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator base_pos, base_end = layout_info.base_offsets.end();
2644                         for (idx = 0, base_pos = layout_info.base_offsets.begin(); base_pos != base_end; ++base_pos, ++idx)
2645                         {
2646                             GetObjectFile()->GetModule()->LogMessage (log,
2647                                                                       "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) base[%u] = { byte_offset=%u, name='%s' }",
2648                                                                       clang_type.GetOpaqueQualType(),
2649                                                                       idx,
2650                                                                       (uint32_t)base_pos->second.getQuantity(),
2651                                                                       base_pos->first->getNameAsString().c_str());
2652                         }
2653                         }
2654                         {
2655                         llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator vbase_pos, vbase_end = layout_info.vbase_offsets.end();
2656                         for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); vbase_pos != vbase_end; ++vbase_pos, ++idx)
2657                         {
2658                             GetObjectFile()->GetModule()->LogMessage (log,
2659                                                                       "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) vbase[%u] = { byte_offset=%u, name='%s' }",
2660                                                                       clang_type.GetOpaqueQualType(),
2661                                                                       idx,
2662                                                                       (uint32_t)vbase_pos->second.getQuantity(),
2663                                                                       vbase_pos->first->getNameAsString().c_str());
2664                         }
2665                         }
2666                     }
2667                     m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info));
2668                 }
2669             }
2670         }
2671
2672         return (bool)clang_type;
2673
2674     case DW_TAG_enumeration_type:
2675         clang_type.StartTagDeclarationDefinition ();
2676         if (die->HasChildren())
2677         {
2678             SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
2679             bool is_signed = false;
2680             clang_type.IsIntegerType(is_signed);
2681             ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), dwarf_cu, die);
2682         }
2683         clang_type.CompleteTagDeclarationDefinition ();
2684         return (bool)clang_type;
2685
2686     default:
2687         assert(false && "not a forward clang type decl!");
2688         break;
2689     }
2690     return false;
2691 }
2692
2693 Type*
2694 SymbolFileDWARF::ResolveType (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* type_die, bool assert_not_being_parsed)
2695 {
2696     if (type_die != NULL)
2697     {
2698         Type *type = m_die_to_type.lookup (type_die);
2699
2700         if (type == NULL)
2701             type = GetTypeForDIE (dwarf_cu, type_die).get();
2702
2703         if (assert_not_being_parsed)
2704         {
2705             if (type != DIE_IS_BEING_PARSED)
2706                 return type;
2707
2708             GetObjectFile()->GetModule()->ReportError ("Parsing a die that is being parsed die: 0x%8.8x: %s %s",
2709                                                        type_die->GetOffset(),
2710                                                        DW_TAG_value_to_name(type_die->Tag()),
2711                                                        type_die->GetName(this, dwarf_cu));
2712
2713         }
2714         else
2715             return type;
2716     }
2717     return NULL;
2718 }
2719
2720 CompileUnit*
2721 SymbolFileDWARF::GetCompUnitForDWARFCompUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx)
2722 {
2723     // Check if the symbol vendor already knows about this compile unit?
2724     if (dwarf_cu->GetUserData() == NULL)
2725     {
2726         // The symbol vendor doesn't know about this compile unit, we
2727         // need to parse and add it to the symbol vendor object.
2728         return ParseCompileUnit(dwarf_cu, cu_idx).get();
2729     }
2730     return (CompileUnit*)dwarf_cu->GetUserData();
2731 }
2732
2733 bool
2734 SymbolFileDWARF::GetFunction (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* func_die, SymbolContext& sc)
2735 {
2736     sc.Clear(false);
2737     // Check if the symbol vendor already knows about this compile unit?
2738     sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
2739
2740     sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(func_die->GetOffset())).get();
2741     if (sc.function == NULL)
2742         sc.function = ParseCompileUnitFunction(sc, dwarf_cu, func_die);
2743
2744     if (sc.function)
2745     {
2746         sc.module_sp = sc.function->CalculateSymbolContextModule();
2747         return true;
2748     }
2749
2750     return false;
2751 }
2752
2753 uint32_t
2754 SymbolFileDWARF::ResolveSymbolContext (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc)
2755 {
2756     Timer scoped_timer(__PRETTY_FUNCTION__,
2757                        "SymbolFileDWARF::ResolveSymbolContext (so_addr = { section = %p, offset = 0x%" PRIx64 " }, resolve_scope = 0x%8.8x)",
2758                        so_addr.GetSection().get(),
2759                        so_addr.GetOffset(),
2760                        resolve_scope);
2761     uint32_t resolved = 0;
2762     if (resolve_scope & (   eSymbolContextCompUnit |
2763                             eSymbolContextFunction |
2764                             eSymbolContextBlock |
2765                             eSymbolContextLineEntry))
2766     {
2767         lldb::addr_t file_vm_addr = so_addr.GetFileAddress();
2768
2769         DWARFDebugInfo* debug_info = DebugInfo();
2770         if (debug_info)
2771         {
2772             const dw_offset_t cu_offset = debug_info->GetCompileUnitAranges().FindAddress(file_vm_addr);
2773             if (cu_offset != DW_INVALID_OFFSET)
2774             {
2775                 uint32_t cu_idx = DW_INVALID_INDEX;
2776                 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnit(cu_offset, &cu_idx).get();
2777                 if (dwarf_cu)
2778                 {
2779                     sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2780                     if (sc.comp_unit)
2781                     {
2782                         resolved |= eSymbolContextCompUnit;
2783
2784                         bool force_check_line_table = false;
2785                         if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock))
2786                         {
2787                             DWARFDebugInfoEntry *function_die = NULL;
2788                             DWARFDebugInfoEntry *block_die = NULL;
2789                             if (resolve_scope & eSymbolContextBlock)
2790                             {
2791                                 dwarf_cu->LookupAddress(file_vm_addr, &function_die, &block_die);
2792                             }
2793                             else
2794                             {
2795                                 dwarf_cu->LookupAddress(file_vm_addr, &function_die, NULL);
2796                             }
2797
2798                             if (function_die != NULL)
2799                             {
2800                                 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get();
2801                                 if (sc.function == NULL)
2802                                     sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die);
2803                             }
2804                             else
2805                             {
2806                                 // We might have had a compile unit that had discontiguous
2807                                 // address ranges where the gaps are symbols that don't have
2808                                 // any debug info. Discontiguous compile unit address ranges
2809                                 // should only happen when there aren't other functions from
2810                                 // other compile units in these gaps. This helps keep the size
2811                                 // of the aranges down.
2812                                 force_check_line_table = true;
2813                             }
2814
2815                             if (sc.function != NULL)
2816                             {
2817                                 resolved |= eSymbolContextFunction;
2818
2819                                 if (resolve_scope & eSymbolContextBlock)
2820                                 {
2821                                     Block& block = sc.function->GetBlock (true);
2822
2823                                     if (block_die != NULL)
2824                                         sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset()));
2825                                     else
2826                                         sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset()));
2827                                     if (sc.block)
2828                                         resolved |= eSymbolContextBlock;
2829                                 }
2830                             }
2831                         }
2832
2833                         if ((resolve_scope & eSymbolContextLineEntry) || force_check_line_table)
2834                         {
2835                             LineTable *line_table = sc.comp_unit->GetLineTable();
2836                             if (line_table != NULL)
2837                             {
2838                                 // And address that makes it into this function should be in terms
2839                                 // of this debug file if there is no debug map, or it will be an
2840                                 // address in the .o file which needs to be fixed up to be in terms
2841                                 // of the debug map executable. Either way, calling FixupAddress()
2842                                 // will work for us.
2843                                 Address exe_so_addr (so_addr);
2844                                 if (FixupAddress(exe_so_addr))
2845                                 {
2846                                     if (line_table->FindLineEntryByAddress (exe_so_addr, sc.line_entry))
2847                                     {
2848                                         resolved |= eSymbolContextLineEntry;
2849                                     }
2850                                 }
2851                             }
2852                         }
2853
2854                         if (force_check_line_table && !(resolved & eSymbolContextLineEntry))
2855                         {
2856                             // We might have had a compile unit that had discontiguous
2857                             // address ranges where the gaps are symbols that don't have
2858                             // any debug info. Discontiguous compile unit address ranges
2859                             // should only happen when there aren't other functions from
2860                             // other compile units in these gaps. This helps keep the size
2861                             // of the aranges down.
2862                             sc.comp_unit = NULL;
2863                             resolved &= ~eSymbolContextCompUnit;
2864                         }
2865                     }
2866                     else
2867                     {
2868                         GetObjectFile()->GetModule()->ReportWarning ("0x%8.8x: compile unit %u failed to create a valid lldb_private::CompileUnit class.",
2869                                                                      cu_offset,
2870                                                                      cu_idx);
2871                     }
2872                 }
2873             }
2874         }
2875     }
2876     return resolved;
2877 }
2878
2879
2880
2881 uint32_t
2882 SymbolFileDWARF::ResolveSymbolContext(const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list)
2883 {
2884     const uint32_t prev_size = sc_list.GetSize();
2885     if (resolve_scope & eSymbolContextCompUnit)
2886     {
2887         DWARFDebugInfo* debug_info = DebugInfo();
2888         if (debug_info)
2889         {
2890             uint32_t cu_idx;
2891             DWARFCompileUnit* dwarf_cu = NULL;
2892
2893             for (cu_idx = 0; (dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx)) != NULL; ++cu_idx)
2894             {
2895                 CompileUnit *dc_cu = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2896                 const bool full_match = (bool)file_spec.GetDirectory();
2897                 bool file_spec_matches_cu_file_spec = dc_cu != NULL && FileSpec::Equal(file_spec, *dc_cu, full_match);
2898                 if (check_inlines || file_spec_matches_cu_file_spec)
2899                 {
2900                     SymbolContext sc (m_obj_file->GetModule());
2901                     sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2902                     if (sc.comp_unit)
2903                     {
2904                         uint32_t file_idx = UINT32_MAX;
2905
2906                         // If we are looking for inline functions only and we don't
2907                         // find it in the support files, we are done.
2908                         if (check_inlines)
2909                         {
2910                             file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true);
2911                             if (file_idx == UINT32_MAX)
2912                                 continue;
2913                         }
2914
2915                         if (line != 0)
2916                         {
2917                             LineTable *line_table = sc.comp_unit->GetLineTable();
2918
2919                             if (line_table != NULL && line != 0)
2920                             {
2921                                 // We will have already looked up the file index if
2922                                 // we are searching for inline entries.
2923                                 if (!check_inlines)
2924                                     file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true);
2925
2926                                 if (file_idx != UINT32_MAX)
2927                                 {
2928                                     uint32_t found_line;
2929                                     uint32_t line_idx = line_table->FindLineEntryIndexByFileIndex (0, file_idx, line, false, &sc.line_entry);
2930                                     found_line = sc.line_entry.line;
2931
2932                                     while (line_idx != UINT32_MAX)
2933                                     {
2934                                         sc.function = NULL;
2935                                         sc.block = NULL;
2936                                         if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock))
2937                                         {
2938                                             const lldb::addr_t file_vm_addr = sc.line_entry.range.GetBaseAddress().GetFileAddress();
2939                                             if (file_vm_addr != LLDB_INVALID_ADDRESS)
2940                                             {
2941                                                 DWARFDebugInfoEntry *function_die = NULL;
2942                                                 DWARFDebugInfoEntry *block_die = NULL;
2943                                                 dwarf_cu->LookupAddress(file_vm_addr, &function_die, resolve_scope & eSymbolContextBlock ? &block_die : NULL);
2944
2945                                                 if (function_die != NULL)
2946                                                 {
2947                                                     sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get();
2948                                                     if (sc.function == NULL)
2949                                                         sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die);
2950                                                 }
2951
2952                                                 if (sc.function != NULL)
2953                                                 {
2954                                                     Block& block = sc.function->GetBlock (true);
2955
2956                                                     if (block_die != NULL)
2957                                                         sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset()));
2958                                                     else
2959                                                         sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset()));
2960                                                 }
2961                                             }
2962                                         }
2963
2964                                         sc_list.Append(sc);
2965                                         line_idx = line_table->FindLineEntryIndexByFileIndex (line_idx + 1, file_idx, found_line, true, &sc.line_entry);
2966                                     }
2967                                 }
2968                             }
2969                             else if (file_spec_matches_cu_file_spec && !check_inlines)
2970                             {
2971                                 // only append the context if we aren't looking for inline call sites
2972                                 // by file and line and if the file spec matches that of the compile unit
2973                                 sc_list.Append(sc);
2974                             }
2975                         }
2976                         else if (file_spec_matches_cu_file_spec && !check_inlines)
2977                         {
2978                             // only append the context if we aren't looking for inline call sites
2979                             // by file and line and if the file spec matches that of the compile unit
2980                             sc_list.Append(sc);
2981                         }
2982
2983                         if (!check_inlines)
2984                             break;
2985                     }
2986                 }
2987             }
2988         }
2989     }
2990     return sc_list.GetSize() - prev_size;
2991 }
2992
2993 void
2994 SymbolFileDWARF::Index ()
2995 {
2996     if (m_indexed)
2997         return;
2998     m_indexed = true;
2999     Timer scoped_timer (__PRETTY_FUNCTION__,
3000                         "SymbolFileDWARF::Index (%s)",
3001                         GetObjectFile()->GetFileSpec().GetFilename().AsCString());
3002
3003     DWARFDebugInfo* debug_info = DebugInfo();
3004     if (debug_info)
3005     {
3006         uint32_t cu_idx = 0;
3007         const uint32_t num_compile_units = GetNumCompileUnits();
3008         for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx)
3009         {
3010             DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx);
3011
3012             bool clear_dies = dwarf_cu->ExtractDIEsIfNeeded (false) > 1;
3013
3014             dwarf_cu->Index (cu_idx,
3015                              m_function_basename_index,
3016                              m_function_fullname_index,
3017                              m_function_method_index,
3018                              m_function_selector_index,
3019                              m_objc_class_selectors_index,
3020                              m_global_index,
3021                              m_type_index,
3022                              m_namespace_index);
3023
3024             // Keep memory down by clearing DIEs if this generate function
3025             // caused them to be parsed
3026             if (clear_dies)
3027                 dwarf_cu->ClearDIEs (true);
3028         }
3029
3030         m_function_basename_index.Finalize();
3031         m_function_fullname_index.Finalize();
3032         m_function_method_index.Finalize();
3033         m_function_selector_index.Finalize();
3034         m_objc_class_selectors_index.Finalize();
3035         m_global_index.Finalize();
3036         m_type_index.Finalize();
3037         m_namespace_index.Finalize();
3038
3039 #if defined (ENABLE_DEBUG_PRINTF)
3040         StreamFile s(stdout, false);
3041         s.Printf ("DWARF index for '%s':",
3042                   GetObjectFile()->GetFileSpec().GetPath().c_str());
3043         s.Printf("\nFunction basenames:\n");    m_function_basename_index.Dump (&s);
3044         s.Printf("\nFunction fullnames:\n");    m_function_fullname_index.Dump (&s);
3045         s.Printf("\nFunction methods:\n");      m_function_method_index.Dump (&s);
3046         s.Printf("\nFunction selectors:\n");    m_function_selector_index.Dump (&s);
3047         s.Printf("\nObjective C class selectors:\n");    m_objc_class_selectors_index.Dump (&s);
3048         s.Printf("\nGlobals and statics:\n");   m_global_index.Dump (&s);
3049         s.Printf("\nTypes:\n");                 m_type_index.Dump (&s);
3050         s.Printf("\nNamepaces:\n");             m_namespace_index.Dump (&s);
3051 #endif
3052     }
3053 }
3054
3055 bool
3056 SymbolFileDWARF::NamespaceDeclMatchesThisSymbolFile (const ClangNamespaceDecl *namespace_decl)
3057 {
3058     if (namespace_decl == NULL)
3059     {
3060         // Invalid namespace decl which means we aren't matching only things
3061         // in this symbol file, so return true to indicate it matches this
3062         // symbol file.
3063         return true;
3064     }
3065
3066     clang::ASTContext *namespace_ast = namespace_decl->GetASTContext();
3067
3068     if (namespace_ast == NULL)
3069         return true;    // No AST in the "namespace_decl", return true since it
3070                         // could then match any symbol file, including this one
3071
3072     if (namespace_ast == GetClangASTContext().getASTContext())
3073         return true;    // The ASTs match, return true
3074
3075     // The namespace AST was valid, and it does not match...
3076     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3077
3078     if (log)
3079         GetObjectFile()->GetModule()->LogMessage(log, "Valid namespace does not match symbol file");
3080
3081     return false;
3082 }
3083
3084 bool
3085 SymbolFileDWARF::DIEIsInNamespace (const ClangNamespaceDecl *namespace_decl,
3086                                    DWARFCompileUnit* cu,
3087                                    const DWARFDebugInfoEntry* die)
3088 {
3089     // No namespace specified, so the answesr i
3090     if (namespace_decl == NULL)
3091         return true;
3092
3093     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3094
3095     const DWARFDebugInfoEntry *decl_ctx_die = NULL;
3096     clang::DeclContext *die_clang_decl_ctx = GetClangDeclContextContainingDIE (cu, die, &decl_ctx_die);
3097     if (decl_ctx_die)
3098     {
3099         clang::NamespaceDecl *clang_namespace_decl = namespace_decl->GetNamespaceDecl();
3100
3101         if (clang_namespace_decl)
3102         {
3103             if (decl_ctx_die->Tag() != DW_TAG_namespace)
3104             {
3105                 if (log)
3106                     GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent is not a namespace");
3107                 return false;
3108             }
3109
3110             if (clang_namespace_decl == die_clang_decl_ctx)
3111                 return true;
3112             else
3113                 return false;
3114         }
3115         else
3116         {
3117             // We have a namespace_decl that was not NULL but it contained
3118             // a NULL "clang::NamespaceDecl", so this means the global namespace
3119             // So as long the the contained decl context DIE isn't a namespace
3120             // we should be ok.
3121             if (decl_ctx_die->Tag() != DW_TAG_namespace)
3122                 return true;
3123         }
3124     }
3125
3126     if (log)
3127         GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent doesn't exist");
3128
3129     return false;
3130 }
3131 uint32_t
3132 SymbolFileDWARF::FindGlobalVariables (const ConstString &name, const lldb_private::ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables)
3133 {
3134     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3135
3136     if (log)
3137     {
3138         GetObjectFile()->GetModule()->LogMessage (log,
3139                                                   "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables)",
3140                                                   name.GetCString(),
3141                                                   namespace_decl,
3142                                                   append,
3143                                                   max_matches);
3144     }
3145
3146     if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
3147         return 0;
3148
3149     DWARFDebugInfo* info = DebugInfo();
3150     if (info == NULL)
3151         return 0;
3152
3153     // If we aren't appending the results to this list, then clear the list
3154     if (!append)
3155         variables.Clear();
3156
3157     // Remember how many variables are in the list before we search in case
3158     // we are appending the results to a variable list.
3159     const uint32_t original_size = variables.GetSize();
3160
3161     DIEArray die_offsets;
3162
3163     if (m_using_apple_tables)
3164     {
3165         if (m_apple_names_ap.get())
3166         {
3167             const char *name_cstr = name.GetCString();
3168             const char *base_name_start;
3169             const char *base_name_end = NULL;
3170
3171             if (!CPPLanguageRuntime::StripNamespacesFromVariableName(name_cstr, base_name_start, base_name_end))
3172                 base_name_start = name_cstr;
3173
3174             m_apple_names_ap->FindByName (base_name_start, die_offsets);
3175         }
3176     }
3177     else
3178     {
3179         // Index the DWARF if we haven't already
3180         if (!m_indexed)
3181             Index ();
3182
3183         m_global_index.Find (name, die_offsets);
3184     }
3185
3186     const size_t num_die_matches = die_offsets.size();
3187     if (num_die_matches)
3188     {
3189         SymbolContext sc;
3190         sc.module_sp = m_obj_file->GetModule();
3191         assert (sc.module_sp);
3192
3193         DWARFDebugInfo* debug_info = DebugInfo();
3194         DWARFCompileUnit* dwarf_cu = NULL;
3195         const DWARFDebugInfoEntry* die = NULL;
3196         bool done = false;
3197         for (size_t i=0; i<num_die_matches && !done; ++i)
3198         {
3199             const dw_offset_t die_offset = die_offsets[i];
3200             die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3201
3202             if (die)
3203             {
3204                 switch (die->Tag())
3205                 {
3206                     default:
3207                     case DW_TAG_subprogram:
3208                     case DW_TAG_inlined_subroutine:
3209                     case DW_TAG_try_block:
3210                     case DW_TAG_catch_block:
3211                         break;
3212
3213                     case DW_TAG_variable:
3214                         {
3215                             sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
3216
3217                             if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3218                                 continue;
3219
3220                             ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables);
3221
3222                             if (variables.GetSize() - original_size >= max_matches)
3223                                 done = true;
3224                         }
3225                         break;
3226                 }
3227             }
3228             else
3229             {
3230                 if (m_using_apple_tables)
3231                 {
3232                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')\n",
3233                                                                                die_offset, name.GetCString());
3234                 }
3235             }
3236         }
3237     }
3238
3239     // Return the number of variable that were appended to the list
3240     const uint32_t num_matches = variables.GetSize() - original_size;
3241     if (log && num_matches > 0)
3242     {
3243         GetObjectFile()->GetModule()->LogMessage (log,
3244                                                   "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables) => %u",
3245                                                   name.GetCString(),
3246                                                   namespace_decl,
3247                                                   append,
3248                                                   max_matches,
3249                                                   num_matches);
3250     }
3251     return num_matches;
3252 }
3253
3254 uint32_t
3255 SymbolFileDWARF::FindGlobalVariables(const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables)
3256 {
3257     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3258
3259     if (log)
3260     {
3261         GetObjectFile()->GetModule()->LogMessage (log,
3262                                                   "SymbolFileDWARF::FindGlobalVariables (regex=\"%s\", append=%u, max_matches=%u, variables)",
3263                                                   regex.GetText(),
3264                                                   append,
3265                                                   max_matches);
3266     }
3267
3268     DWARFDebugInfo* info = DebugInfo();
3269     if (info == NULL)
3270         return 0;
3271
3272     // If we aren't appending the results to this list, then clear the list
3273     if (!append)
3274         variables.Clear();
3275
3276     // Remember how many variables are in the list before we search in case
3277     // we are appending the results to a variable list.
3278     const uint32_t original_size = variables.GetSize();
3279
3280     DIEArray die_offsets;
3281
3282     if (m_using_apple_tables)
3283     {
3284         if (m_apple_names_ap.get())
3285         {
3286             DWARFMappedHash::DIEInfoArray hash_data_array;
3287             if (m_apple_names_ap->AppendAllDIEsThatMatchingRegex (regex, hash_data_array))
3288                 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
3289         }
3290     }
3291     else
3292     {
3293         // Index the DWARF if we haven't already
3294         if (!m_indexed)
3295             Index ();
3296
3297         m_global_index.Find (regex, die_offsets);
3298     }
3299
3300     SymbolContext sc;
3301     sc.module_sp = m_obj_file->GetModule();
3302     assert (sc.module_sp);
3303
3304     DWARFCompileUnit* dwarf_cu = NULL;
3305     const DWARFDebugInfoEntry* die = NULL;
3306     const size_t num_matches = die_offsets.size();
3307     if (num_matches)
3308     {
3309         DWARFDebugInfo* debug_info = DebugInfo();
3310         for (size_t i=0; i<num_matches; ++i)
3311         {
3312             const dw_offset_t die_offset = die_offsets[i];
3313             die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3314
3315             if (die)
3316             {
3317                 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
3318
3319                 ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables);
3320
3321                 if (variables.GetSize() - original_size >= max_matches)
3322                     break;
3323             }
3324             else
3325             {
3326                 if (m_using_apple_tables)
3327                 {
3328                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for regex '%s')\n",
3329                                                                                die_offset, regex.GetText());
3330                 }
3331             }
3332         }
3333     }
3334
3335     // Return the number of variable that were appended to the list
3336     return variables.GetSize() - original_size;
3337 }
3338
3339
3340 bool
3341 SymbolFileDWARF::ResolveFunction (dw_offset_t die_offset,
3342                                   DWARFCompileUnit *&dwarf_cu,
3343                                   SymbolContextList& sc_list)
3344 {
3345     const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3346     return ResolveFunction (dwarf_cu, die, sc_list);
3347 }
3348
3349
3350 bool
3351 SymbolFileDWARF::ResolveFunction (DWARFCompileUnit *cu,
3352                                   const DWARFDebugInfoEntry *die,
3353                                   SymbolContextList& sc_list)
3354 {
3355     SymbolContext sc;
3356
3357     if (die == NULL)
3358         return false;
3359
3360     // If we were passed a die that is not a function, just return false...
3361     if (die->Tag() != DW_TAG_subprogram && die->Tag() != DW_TAG_inlined_subroutine)
3362         return false;
3363
3364     const DWARFDebugInfoEntry* inlined_die = NULL;
3365     if (die->Tag() == DW_TAG_inlined_subroutine)
3366     {
3367         inlined_die = die;
3368
3369         while ((die = die->GetParent()) != NULL)
3370         {
3371             if (die->Tag() == DW_TAG_subprogram)
3372                 break;
3373         }
3374     }
3375     assert (die->Tag() == DW_TAG_subprogram);
3376     if (GetFunction (cu, die, sc))
3377     {
3378         Address addr;
3379         // Parse all blocks if needed
3380         if (inlined_die)
3381         {
3382             sc.block = sc.function->GetBlock (true).FindBlockByID (MakeUserID(inlined_die->GetOffset()));
3383             assert (sc.block != NULL);
3384             if (sc.block->GetStartAddress (addr) == false)
3385                 addr.Clear();
3386         }
3387         else
3388         {
3389             sc.block = NULL;
3390             addr = sc.function->GetAddressRange().GetBaseAddress();
3391         }
3392
3393         if (addr.IsValid())
3394         {
3395             sc_list.Append(sc);
3396             return true;
3397         }
3398     }
3399
3400     return false;
3401 }
3402
3403 void
3404 SymbolFileDWARF::FindFunctions (const ConstString &name,
3405                                 const NameToDIE &name_to_die,
3406                                 SymbolContextList& sc_list)
3407 {
3408     DIEArray die_offsets;
3409     if (name_to_die.Find (name, die_offsets))
3410     {
3411         ParseFunctions (die_offsets, sc_list);
3412     }
3413 }
3414
3415
3416 void
3417 SymbolFileDWARF::FindFunctions (const RegularExpression &regex,
3418                                 const NameToDIE &name_to_die,
3419                                 SymbolContextList& sc_list)
3420 {
3421     DIEArray die_offsets;
3422     if (name_to_die.Find (regex, die_offsets))
3423     {
3424         ParseFunctions (die_offsets, sc_list);
3425     }
3426 }
3427
3428
3429 void
3430 SymbolFileDWARF::FindFunctions (const RegularExpression &regex,
3431                                 const DWARFMappedHash::MemoryTable &memory_table,
3432                                 SymbolContextList& sc_list)
3433 {
3434     DIEArray die_offsets;
3435     DWARFMappedHash::DIEInfoArray hash_data_array;
3436     if (memory_table.AppendAllDIEsThatMatchingRegex (regex, hash_data_array))
3437     {
3438         DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
3439         ParseFunctions (die_offsets, sc_list);
3440     }
3441 }
3442
3443 void
3444 SymbolFileDWARF::ParseFunctions (const DIEArray &die_offsets,
3445                                  SymbolContextList& sc_list)
3446 {
3447     const size_t num_matches = die_offsets.size();
3448     if (num_matches)
3449     {
3450         SymbolContext sc;
3451
3452         DWARFCompileUnit* dwarf_cu = NULL;
3453         for (size_t i=0; i<num_matches; ++i)
3454         {
3455             const dw_offset_t die_offset = die_offsets[i];
3456             ResolveFunction (die_offset, dwarf_cu, sc_list);
3457         }
3458     }
3459 }
3460
3461 bool
3462 SymbolFileDWARF::FunctionDieMatchesPartialName (const DWARFDebugInfoEntry* die,
3463                                                 const DWARFCompileUnit *dwarf_cu,
3464                                                 uint32_t name_type_mask,
3465                                                 const char *partial_name,
3466                                                 const char *base_name_start,
3467                                                 const char *base_name_end)
3468 {
3469     // If we are looking only for methods, throw away all the ones that are or aren't in C++ classes:
3470     if (name_type_mask == eFunctionNameTypeMethod || name_type_mask == eFunctionNameTypeBase)
3471     {
3472         clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIEOffset(die->GetOffset());
3473         if (!containing_decl_ctx)
3474             return false;
3475
3476         bool is_cxx_method = DeclKindIsCXXClass(containing_decl_ctx->getDeclKind());
3477
3478         if (name_type_mask == eFunctionNameTypeMethod)
3479         {
3480             if (is_cxx_method == false)
3481                 return false;
3482         }
3483
3484         if (name_type_mask == eFunctionNameTypeBase)
3485         {
3486             if (is_cxx_method == true)
3487                 return false;
3488         }
3489     }
3490
3491     // Now we need to check whether the name we got back for this type matches the extra specifications
3492     // that were in the name we're looking up:
3493     if (base_name_start != partial_name || *base_name_end != '\0')
3494     {
3495         // First see if the stuff to the left matches the full name.  To do that let's see if
3496         // we can pull out the mips linkage name attribute:
3497
3498         Mangled best_name;
3499         DWARFDebugInfoEntry::Attributes attributes;
3500         DWARFFormValue form_value;
3501         die->GetAttributes(this, dwarf_cu, NULL, attributes);
3502         uint32_t idx = attributes.FindAttributeIndex(DW_AT_MIPS_linkage_name);
3503         if (idx == UINT32_MAX)
3504             idx = attributes.FindAttributeIndex(DW_AT_linkage_name);
3505         if (idx != UINT32_MAX)
3506         {
3507             if (attributes.ExtractFormValueAtIndex(this, idx, form_value))
3508             {
3509                 const char *mangled_name = form_value.AsCString(&get_debug_str_data());
3510                 if (mangled_name)
3511                     best_name.SetValue (ConstString(mangled_name), true);
3512             }
3513         }
3514
3515         if (!best_name)
3516         {
3517             idx = attributes.FindAttributeIndex(DW_AT_name);
3518             if (idx != UINT32_MAX && attributes.ExtractFormValueAtIndex(this, idx, form_value))
3519             {
3520                 const char *name = form_value.AsCString(&get_debug_str_data());
3521                 best_name.SetValue (ConstString(name), false);
3522             }
3523         }
3524
3525         if (best_name.GetDemangledName())
3526         {
3527             const char *demangled = best_name.GetDemangledName().GetCString();
3528             if (demangled)
3529             {
3530                 std::string name_no_parens(partial_name, base_name_end - partial_name);
3531                 const char *partial_in_demangled = strstr (demangled, name_no_parens.c_str());
3532                 if (partial_in_demangled == NULL)
3533                     return false;
3534                 else
3535                 {
3536                     // Sort out the case where our name is something like "Process::Destroy" and the match is
3537                     // "SBProcess::Destroy" - that shouldn't be a match.  We should really always match on
3538                     // namespace boundaries...
3539
3540                     if (partial_name[0] == ':'  && partial_name[1] == ':')
3541                     {
3542                         // The partial name was already on a namespace boundary so all matches are good.
3543                         return true;
3544                     }
3545                     else if (partial_in_demangled == demangled)
3546                     {
3547                         // They both start the same, so this is an good match.
3548                         return true;
3549                     }
3550                     else
3551                     {
3552                         if (partial_in_demangled - demangled == 1)
3553                         {
3554                             // Only one character difference, can't be a namespace boundary...
3555                             return false;
3556                         }
3557                         else if (*(partial_in_demangled - 1) == ':' && *(partial_in_demangled - 2) == ':')
3558                         {
3559                             // We are on a namespace boundary, so this is also good.
3560                             return true;
3561                         }
3562                         else
3563                             return false;
3564                     }
3565                 }
3566             }
3567         }
3568     }
3569
3570     return true;
3571 }
3572
3573 uint32_t
3574 SymbolFileDWARF::FindFunctions (const ConstString &name,
3575                                 const lldb_private::ClangNamespaceDecl *namespace_decl,
3576                                 uint32_t name_type_mask,
3577                                 bool include_inlines,
3578                                 bool append,
3579                                 SymbolContextList& sc_list)
3580 {
3581     Timer scoped_timer (__PRETTY_FUNCTION__,
3582                         "SymbolFileDWARF::FindFunctions (name = '%s')",
3583                         name.AsCString());
3584
3585     // eFunctionNameTypeAuto should be pre-resolved by a call to Module::PrepareForFunctionNameLookup()
3586     assert ((name_type_mask & eFunctionNameTypeAuto) == 0);
3587
3588     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3589
3590     if (log)
3591     {
3592         GetObjectFile()->GetModule()->LogMessage (log,
3593                                                   "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list)",
3594                                                   name.GetCString(),
3595                                                   name_type_mask,
3596                                                   append);
3597     }
3598
3599     // If we aren't appending the results to this list, then clear the list
3600     if (!append)
3601         sc_list.Clear();
3602
3603     if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
3604         return 0;
3605
3606     // If name is empty then we won't find anything.
3607     if (name.IsEmpty())
3608         return 0;
3609
3610     // Remember how many sc_list are in the list before we search in case
3611     // we are appending the results to a variable list.
3612
3613     const char *name_cstr = name.GetCString();
3614
3615     const uint32_t original_size = sc_list.GetSize();
3616
3617     DWARFDebugInfo* info = DebugInfo();
3618     if (info == NULL)
3619         return 0;
3620
3621     DWARFCompileUnit *dwarf_cu = NULL;
3622     std::set<const DWARFDebugInfoEntry *> resolved_dies;
3623     if (m_using_apple_tables)
3624     {
3625         if (m_apple_names_ap.get())
3626         {
3627
3628             DIEArray die_offsets;
3629
3630             uint32_t num_matches = 0;
3631
3632             if (name_type_mask & eFunctionNameTypeFull)
3633             {
3634                 // If they asked for the full name, match what they typed.  At some point we may
3635                 // want to canonicalize this (strip double spaces, etc.  For now, we just add all the
3636                 // dies that we find by exact match.
3637                 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
3638                 for (uint32_t i = 0; i < num_matches; i++)
3639                 {
3640                     const dw_offset_t die_offset = die_offsets[i];
3641                     const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3642                     if (die)
3643                     {
3644                         if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3645                             continue;
3646
3647                         if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3648                             continue;
3649
3650                         if (resolved_dies.find(die) == resolved_dies.end())
3651                         {
3652                             if (ResolveFunction (dwarf_cu, die, sc_list))
3653                                 resolved_dies.insert(die);
3654                         }
3655                     }
3656                     else
3657                     {
3658                         GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3659                                                                                    die_offset, name_cstr);
3660                     }
3661                 }
3662             }
3663
3664             if (name_type_mask & eFunctionNameTypeSelector)
3665             {
3666                 if (namespace_decl && *namespace_decl)
3667                     return 0; // no selectors in namespaces
3668
3669                 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
3670                 // Now make sure these are actually ObjC methods.  In this case we can simply look up the name,
3671                 // and if it is an ObjC method name, we're good.
3672
3673                 for (uint32_t i = 0; i < num_matches; i++)
3674                 {
3675                     const dw_offset_t die_offset = die_offsets[i];
3676                     const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3677                     if (die)
3678                     {
3679                         const char *die_name = die->GetName(this, dwarf_cu);
3680                         if (ObjCLanguageRuntime::IsPossibleObjCMethodName(die_name))
3681                         {
3682                             if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3683                                 continue;
3684
3685                             if (resolved_dies.find(die) == resolved_dies.end())
3686                             {
3687                                 if (ResolveFunction (dwarf_cu, die, sc_list))
3688                                     resolved_dies.insert(die);
3689                             }
3690                         }
3691                     }
3692                     else
3693                     {
3694                         GetObjectFile()->GetModule()->ReportError ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3695                                                                    die_offset, name_cstr);
3696                     }
3697                 }
3698                 die_offsets.clear();
3699             }
3700
3701             if (((name_type_mask & eFunctionNameTypeMethod) && !namespace_decl) || name_type_mask & eFunctionNameTypeBase)
3702             {
3703                 // The apple_names table stores just the "base name" of C++ methods in the table.  So we have to
3704                 // extract the base name, look that up, and if there is any other information in the name we were
3705                 // passed in we have to post-filter based on that.
3706
3707                 // FIXME: Arrange the logic above so that we don't calculate the base name twice:
3708                 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
3709
3710                 for (uint32_t i = 0; i < num_matches; i++)
3711                 {
3712                     const dw_offset_t die_offset = die_offsets[i];
3713                     const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3714                     if (die)
3715                     {
3716                         if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3717                             continue;
3718
3719                         if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3720                             continue;
3721
3722                         // If we get to here, the die is good, and we should add it:
3723                         if (resolved_dies.find(die) == resolved_dies.end())
3724                         if (ResolveFunction (dwarf_cu, die, sc_list))
3725                         {
3726                             bool keep_die = true;
3727                             if ((name_type_mask & (eFunctionNameTypeBase|eFunctionNameTypeMethod)) != (eFunctionNameTypeBase|eFunctionNameTypeMethod))
3728                             {
3729                                 // We are looking for either basenames or methods, so we need to
3730                                 // trim out the ones we won't want by looking at the type
3731                                 SymbolContext sc;
3732                                 if (sc_list.GetLastContext(sc))
3733                                 {
3734                                     if (sc.block)
3735                                     {
3736                                         // We have an inlined function
3737                                     }
3738                                     else if (sc.function)
3739                                     {
3740                                         Type *type = sc.function->GetType();
3741
3742                                         if (type)
3743                                         {
3744                                             clang::DeclContext* decl_ctx = GetClangDeclContextContainingTypeUID (type->GetID());
3745                                             if (decl_ctx->isRecord())
3746                                             {
3747                                                 if (name_type_mask & eFunctionNameTypeBase)
3748                                                 {
3749                                                     sc_list.RemoveContextAtIndex(sc_list.GetSize()-1);
3750                                                     keep_die = false;
3751                                                 }
3752                                             }
3753                                             else
3754                                             {
3755                                                 if (name_type_mask & eFunctionNameTypeMethod)
3756                                                 {
3757                                                     sc_list.RemoveContextAtIndex(sc_list.GetSize()-1);
3758                                                     keep_die = false;
3759                                                 }
3760                                             }
3761                                         }
3762                                         else
3763                                         {
3764                                             GetObjectFile()->GetModule()->ReportWarning ("function at die offset 0x%8.8x had no function type",
3765                                                                                          die_offset);
3766                                         }
3767                                     }
3768                                 }
3769                             }
3770                             if (keep_die)
3771                                 resolved_dies.insert(die);
3772                         }
3773                     }
3774                     else
3775                     {
3776                         GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3777                                                                                    die_offset, name_cstr);
3778                     }
3779                 }
3780                 die_offsets.clear();
3781             }
3782         }
3783     }
3784     else
3785     {
3786
3787         // Index the DWARF if we haven't already
3788         if (!m_indexed)
3789             Index ();
3790
3791         if (name_type_mask & eFunctionNameTypeFull)
3792         {
3793             FindFunctions (name, m_function_fullname_index, sc_list);
3794
3795             // FIXME Temporary workaround for global/anonymous namespace
3796             // functions on FreeBSD and Linux
3797 #if defined (__FreeBSD__) || defined (__linux__)
3798             // If we didn't find any functions in the global namespace try
3799             // looking in the basename index but ignore any returned
3800             // functions that have a namespace (ie. mangled names starting with
3801             // '_ZN') but keep functions which have an anonymous namespace
3802             if (sc_list.GetSize() == 0)
3803             {
3804                 SymbolContextList temp_sc_list;
3805                 FindFunctions (name, m_function_basename_index, temp_sc_list);
3806                 if (!namespace_decl)
3807                 {
3808                     SymbolContext sc;
3809                     for (uint32_t i = 0; i < temp_sc_list.GetSize(); i++)
3810                     {
3811                         if (temp_sc_list.GetContextAtIndex(i, sc))
3812                         {
3813                             ConstString mangled_name = sc.GetFunctionName(Mangled::ePreferMangled);
3814                             ConstString demangled_name = sc.GetFunctionName(Mangled::ePreferDemangled);
3815                             if (strncmp(mangled_name.GetCString(), "_ZN", 3) ||
3816                                 !strncmp(demangled_name.GetCString(), "(anonymous namespace)", 21))
3817                             {
3818                                 sc_list.Append(sc);
3819                             }
3820                         }
3821                     }
3822                 }
3823             }
3824 #endif
3825         }
3826         DIEArray die_offsets;
3827         DWARFCompileUnit *dwarf_cu = NULL;
3828
3829         if (name_type_mask & eFunctionNameTypeBase)
3830         {
3831             uint32_t num_base = m_function_basename_index.Find(name, die_offsets);
3832             for (uint32_t i = 0; i < num_base; i++)
3833             {
3834                 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu);
3835                 if (die)
3836                 {
3837                     if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3838                         continue;
3839
3840                     if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3841                         continue;
3842
3843                     // If we get to here, the die is good, and we should add it:
3844                     if (resolved_dies.find(die) == resolved_dies.end())
3845                     {
3846                         if (ResolveFunction (dwarf_cu, die, sc_list))
3847                             resolved_dies.insert(die);
3848                     }
3849                 }
3850             }
3851             die_offsets.clear();
3852         }
3853
3854         if (name_type_mask & eFunctionNameTypeMethod)
3855         {
3856             if (namespace_decl && *namespace_decl)
3857                 return 0; // no methods in namespaces
3858
3859             uint32_t num_base = m_function_method_index.Find(name, die_offsets);
3860             {
3861                 for (uint32_t i = 0; i < num_base; i++)
3862                 {
3863                     const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu);
3864                     if (die)
3865                     {
3866                         if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3867                             continue;
3868
3869                         // If we get to here, the die is good, and we should add it:
3870                         if (resolved_dies.find(die) == resolved_dies.end())
3871                         {
3872                             if (ResolveFunction (dwarf_cu, die, sc_list))
3873                                 resolved_dies.insert(die);
3874                         }
3875                     }
3876                 }
3877             }
3878             die_offsets.clear();
3879         }
3880
3881         if ((name_type_mask & eFunctionNameTypeSelector) && (!namespace_decl || !*namespace_decl))
3882         {
3883             FindFunctions (name, m_function_selector_index, sc_list);
3884         }
3885
3886     }
3887
3888     // Return the number of variable that were appended to the list
3889     const uint32_t num_matches = sc_list.GetSize() - original_size;
3890
3891     if (log && num_matches > 0)
3892     {
3893         GetObjectFile()->GetModule()->LogMessage (log,
3894                                                   "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list) => %u",
3895                                                   name.GetCString(),
3896                                                   name_type_mask,
3897                                                   append,
3898                                                   num_matches);
3899     }
3900     return num_matches;
3901 }
3902
3903 uint32_t
3904 SymbolFileDWARF::FindFunctions(const RegularExpression& regex, bool include_inlines, bool append, SymbolContextList& sc_list)
3905 {
3906     Timer scoped_timer (__PRETTY_FUNCTION__,
3907                         "SymbolFileDWARF::FindFunctions (regex = '%s')",
3908                         regex.GetText());
3909
3910     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3911
3912     if (log)
3913     {
3914         GetObjectFile()->GetModule()->LogMessage (log,
3915                                                   "SymbolFileDWARF::FindFunctions (regex=\"%s\", append=%u, sc_list)",
3916                                                   regex.GetText(),
3917                                                   append);
3918     }
3919
3920
3921     // If we aren't appending the results to this list, then clear the list
3922     if (!append)
3923         sc_list.Clear();
3924
3925     // Remember how many sc_list are in the list before we search in case
3926     // we are appending the results to a variable list.
3927     uint32_t original_size = sc_list.GetSize();
3928
3929     if (m_using_apple_tables)
3930     {
3931         if (m_apple_names_ap.get())
3932             FindFunctions (regex, *m_apple_names_ap, sc_list);
3933     }
3934     else
3935     {
3936         // Index the DWARF if we haven't already
3937         if (!m_indexed)
3938             Index ();
3939
3940         FindFunctions (regex, m_function_basename_index, sc_list);
3941
3942         FindFunctions (regex, m_function_fullname_index, sc_list);
3943     }
3944
3945     // Return the number of variable that were appended to the list
3946     return sc_list.GetSize() - original_size;
3947 }
3948
3949 uint32_t
3950 SymbolFileDWARF::FindTypes (const SymbolContext& sc,
3951                             const ConstString &name,
3952                             const lldb_private::ClangNamespaceDecl *namespace_decl,
3953                             bool append,
3954                             uint32_t max_matches,
3955                             TypeList& types)
3956 {
3957     DWARFDebugInfo* info = DebugInfo();
3958     if (info == NULL)
3959         return 0;
3960
3961     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
3962
3963     if (log)
3964     {
3965         if (namespace_decl)
3966         {
3967             GetObjectFile()->GetModule()->LogMessage (log,
3968                                                       "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list)",
3969                                                       name.GetCString(),
3970                                                       namespace_decl->GetNamespaceDecl(),
3971                                                       namespace_decl->GetQualifiedName().c_str(),
3972                                                       append,
3973                                                       max_matches);
3974         }
3975         else
3976         {
3977             GetObjectFile()->GetModule()->LogMessage (log,
3978                                                       "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list)",
3979                                                       name.GetCString(),
3980                                                       append,
3981                                                       max_matches);
3982         }
3983     }
3984
3985     // If we aren't appending the results to this list, then clear the list
3986     if (!append)
3987         types.Clear();
3988
3989     if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
3990         return 0;
3991
3992     DIEArray die_offsets;
3993
3994     if (m_using_apple_tables)
3995     {
3996         if (m_apple_types_ap.get())
3997         {
3998             const char *name_cstr = name.GetCString();
3999             m_apple_types_ap->FindByName (name_cstr, die_offsets);
4000         }
4001     }
4002     else
4003     {
4004         if (!m_indexed)
4005             Index ();
4006
4007         m_type_index.Find (name, die_offsets);
4008     }
4009
4010     const size_t num_die_matches = die_offsets.size();
4011
4012     if (num_die_matches)
4013     {
4014         const uint32_t initial_types_size = types.GetSize();
4015         DWARFCompileUnit* dwarf_cu = NULL;
4016         const DWARFDebugInfoEntry* die = NULL;
4017         DWARFDebugInfo* debug_info = DebugInfo();
4018         for (size_t i=0; i<num_die_matches; ++i)
4019         {
4020             const dw_offset_t die_offset = die_offsets[i];
4021             die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
4022
4023             if (die)
4024             {
4025                 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
4026                     continue;
4027
4028                 Type *matching_type = ResolveType (dwarf_cu, die);
4029                 if (matching_type)
4030                 {
4031                     // We found a type pointer, now find the shared pointer form our type list
4032                     types.InsertUnique (matching_type->shared_from_this());
4033                     if (types.GetSize() >= max_matches)
4034                         break;
4035                 }
4036             }
4037             else
4038             {
4039                 if (m_using_apple_tables)
4040                 {
4041                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
4042                                                                                die_offset, name.GetCString());
4043                 }
4044             }
4045
4046         }
4047         const uint32_t num_matches = types.GetSize() - initial_types_size;
4048         if (log && num_matches)
4049         {
4050             if (namespace_decl)
4051             {
4052                 GetObjectFile()->GetModule()->LogMessage (log,
4053                                                           "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list) => %u",
4054                                                           name.GetCString(),
4055                                                           namespace_decl->GetNamespaceDecl(),
4056                                                           namespace_decl->GetQualifiedName().c_str(),
4057                                                           append,
4058                                                           max_matches,
4059                                                           num_matches);
4060             }
4061             else
4062             {
4063                 GetObjectFile()->GetModule()->LogMessage (log,
4064                                                           "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list) => %u",
4065                                                           name.GetCString(),
4066                                                           append,
4067                                                           max_matches,
4068                                                           num_matches);
4069             }
4070         }
4071         return num_matches;
4072     }
4073     return 0;
4074 }
4075
4076
4077 ClangNamespaceDecl
4078 SymbolFileDWARF::FindNamespace (const SymbolContext& sc,
4079                                 const ConstString &name,
4080                                 const lldb_private::ClangNamespaceDecl *parent_namespace_decl)
4081 {
4082     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
4083
4084     if (log)
4085     {
4086         GetObjectFile()->GetModule()->LogMessage (log,
4087                                                   "SymbolFileDWARF::FindNamespace (sc, name=\"%s\")",
4088                                                   name.GetCString());
4089     }
4090
4091     if (!NamespaceDeclMatchesThisSymbolFile(parent_namespace_decl))
4092         return ClangNamespaceDecl();
4093
4094     ClangNamespaceDecl namespace_decl;
4095     DWARFDebugInfo* info = DebugInfo();
4096     if (info)
4097     {
4098         DIEArray die_offsets;
4099
4100         // Index if we already haven't to make sure the compile units
4101         // get indexed and make their global DIE index list
4102         if (m_using_apple_tables)
4103         {
4104             if (m_apple_namespaces_ap.get())
4105             {
4106                 const char *name_cstr = name.GetCString();
4107                 m_apple_namespaces_ap->FindByName (name_cstr, die_offsets);
4108             }
4109         }
4110         else
4111         {
4112             if (!m_indexed)
4113                 Index ();
4114
4115             m_namespace_index.Find (name, die_offsets);
4116         }
4117
4118         DWARFCompileUnit* dwarf_cu = NULL;
4119         const DWARFDebugInfoEntry* die = NULL;
4120         const size_t num_matches = die_offsets.size();
4121         if (num_matches)
4122         {
4123             DWARFDebugInfo* debug_info = DebugInfo();
4124             for (size_t i=0; i<num_matches; ++i)
4125             {
4126                 const dw_offset_t die_offset = die_offsets[i];
4127                 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
4128
4129                 if (die)
4130                 {
4131                     if (parent_namespace_decl && !DIEIsInNamespace (parent_namespace_decl, dwarf_cu, die))
4132                         continue;
4133
4134                     clang::NamespaceDecl *clang_namespace_decl = ResolveNamespaceDIE (dwarf_cu, die);
4135                     if (clang_namespace_decl)
4136                     {
4137                         namespace_decl.SetASTContext (GetClangASTContext().getASTContext());
4138                         namespace_decl.SetNamespaceDecl (clang_namespace_decl);
4139                         break;
4140                     }
4141                 }
4142                 else
4143                 {
4144                     if (m_using_apple_tables)
4145                     {
4146                         GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_namespaces accelerator table had bad die 0x%8.8x for '%s')\n",
4147                                                                    die_offset, name.GetCString());
4148                     }
4149                 }
4150
4151             }
4152         }
4153     }
4154     if (log && namespace_decl.GetNamespaceDecl())
4155     {
4156         GetObjectFile()->GetModule()->LogMessage (log,
4157                                                   "SymbolFileDWARF::FindNamespace (sc, name=\"%s\") => clang::NamespaceDecl(%p) \"%s\"",
4158                                                   name.GetCString(),
4159                                                   namespace_decl.GetNamespaceDecl(),
4160                                                   namespace_decl.GetQualifiedName().c_str());
4161     }
4162
4163     return namespace_decl;
4164 }
4165
4166 uint32_t
4167 SymbolFileDWARF::FindTypes(std::vector<dw_offset_t> die_offsets, uint32_t max_matches, TypeList& types)
4168 {
4169     // Remember how many sc_list are in the list before we search in case
4170     // we are appending the results to a variable list.
4171     uint32_t original_size = types.GetSize();
4172
4173     const uint32_t num_die_offsets = die_offsets.size();
4174     // Parse all of the types we found from the pubtypes matches
4175     uint32_t i;
4176     uint32_t num_matches = 0;
4177     for (i = 0; i < num_die_offsets; ++i)
4178     {
4179         Type *matching_type = ResolveTypeUID (die_offsets[i]);
4180         if (matching_type)
4181         {
4182             // We found a type pointer, now find the shared pointer form our type list
4183             types.InsertUnique (matching_type->shared_from_this());
4184             ++num_matches;
4185             if (num_matches >= max_matches)
4186                 break;
4187         }
4188     }
4189
4190     // Return the number of variable that were appended to the list
4191     return types.GetSize() - original_size;
4192 }
4193
4194
4195 size_t
4196 SymbolFileDWARF::ParseChildParameters (const SymbolContext& sc,
4197                                        clang::DeclContext *containing_decl_ctx,
4198                                        DWARFCompileUnit* dwarf_cu,
4199                                        const DWARFDebugInfoEntry *parent_die,
4200                                        bool skip_artificial,
4201                                        bool &is_static,
4202                                        bool &is_variadic,
4203                                        TypeList* type_list,
4204                                        std::vector<ClangASTType>& function_param_types,
4205                                        std::vector<clang::ParmVarDecl*>& function_param_decls,
4206                                        unsigned &type_quals,
4207                                        ClangASTContext::TemplateParameterInfos &template_param_infos)
4208 {
4209     if (parent_die == NULL)
4210         return 0;
4211
4212     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
4213
4214     size_t arg_idx = 0;
4215     const DWARFDebugInfoEntry *die;
4216     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
4217     {
4218         dw_tag_t tag = die->Tag();
4219         switch (tag)
4220         {
4221         case DW_TAG_formal_parameter:
4222             {
4223                 DWARFDebugInfoEntry::Attributes attributes;
4224                 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
4225                 if (num_attributes > 0)
4226                 {
4227                     const char *name = NULL;
4228                     Declaration decl;
4229                     dw_offset_t param_type_die_offset = DW_INVALID_OFFSET;
4230                     bool is_artificial = false;
4231                     // one of None, Auto, Register, Extern, Static, PrivateExtern
4232
4233                     clang::StorageClass storage = clang::SC_None;
4234                     uint32_t i;
4235                     for (i=0; i<num_attributes; ++i)
4236                     {
4237                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
4238                         DWARFFormValue form_value;
4239                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
4240                         {
4241                             switch (attr)
4242                             {
4243                             case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
4244                             case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
4245                             case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
4246                             case DW_AT_name:        name = form_value.AsCString(&get_debug_str_data()); break;
4247                             case DW_AT_type:        param_type_die_offset = form_value.Reference(dwarf_cu); break;
4248                             case DW_AT_artificial:  is_artificial = form_value.Boolean(); break;
4249                             case DW_AT_location:
4250     //                          if (form_value.BlockData())
4251     //                          {
4252     //                              const DWARFDataExtractor& debug_info_data = debug_info();
4253     //                              uint32_t block_length = form_value.Unsigned();
4254     //                              DWARFDataExtractor location(debug_info_data, form_value.BlockData() - debug_info_data.GetDataStart(), block_length);
4255     //                          }
4256     //                          else
4257     //                          {
4258     //                          }
4259     //                          break;
4260                             case DW_AT_const_value:
4261                             case DW_AT_default_value:
4262                             case DW_AT_description:
4263                             case DW_AT_endianity:
4264                             case DW_AT_is_optional:
4265                             case DW_AT_segment:
4266                             case DW_AT_variable_parameter:
4267                             default:
4268                             case DW_AT_abstract_origin:
4269                             case DW_AT_sibling:
4270                                 break;
4271                             }
4272                         }
4273                     }
4274
4275                     bool skip = false;
4276                     if (skip_artificial)
4277                     {
4278                         if (is_artificial)
4279                         {
4280                             // In order to determine if a C++ member function is
4281                             // "const" we have to look at the const-ness of "this"...
4282                             // Ugly, but that
4283                             if (arg_idx == 0)
4284                             {
4285                                 if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind()))
4286                                 {
4287                                     // Often times compilers omit the "this" name for the
4288                                     // specification DIEs, so we can't rely upon the name
4289                                     // being in the formal parameter DIE...
4290                                     if (name == NULL || ::strcmp(name, "this")==0)
4291                                     {
4292                                         Type *this_type = ResolveTypeUID (param_type_die_offset);
4293                                         if (this_type)
4294                                         {
4295                                             uint32_t encoding_mask = this_type->GetEncodingMask();
4296                                             if (encoding_mask & Type::eEncodingIsPointerUID)
4297                                             {
4298                                                 is_static = false;
4299
4300                                                 if (encoding_mask & (1u << Type::eEncodingIsConstUID))
4301                                                     type_quals |= clang::Qualifiers::Const;
4302                                                 if (encoding_mask & (1u << Type::eEncodingIsVolatileUID))
4303                                                     type_quals |= clang::Qualifiers::Volatile;
4304                                             }
4305                                         }
4306                                     }
4307                                 }
4308                             }
4309                             skip = true;
4310                         }
4311                         else
4312                         {
4313
4314                             // HACK: Objective C formal parameters "self" and "_cmd"
4315                             // are not marked as artificial in the DWARF...
4316                             CompileUnit *comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
4317                             if (comp_unit)
4318                             {
4319                                 switch (comp_unit->GetLanguage())
4320                                 {
4321                                     case eLanguageTypeObjC:
4322                                     case eLanguageTypeObjC_plus_plus:
4323                                         if (name && name[0] && (strcmp (name, "self") == 0 || strcmp (name, "_cmd") == 0))
4324                                             skip = true;
4325                                         break;
4326                                     default:
4327                                         break;
4328                                 }
4329                             }
4330                         }
4331                     }
4332
4333                     if (!skip)
4334                     {
4335                         Type *type = ResolveTypeUID(param_type_die_offset);
4336                         if (type)
4337                         {
4338                             function_param_types.push_back (type->GetClangForwardType());
4339
4340                             clang::ParmVarDecl *param_var_decl = GetClangASTContext().CreateParameterDeclaration (name,
4341                                                                                                                   type->GetClangForwardType(),
4342                                                                                                                   storage);
4343                             assert(param_var_decl);
4344                             function_param_decls.push_back(param_var_decl);
4345
4346                             GetClangASTContext().SetMetadataAsUserID (param_var_decl, MakeUserID(die->GetOffset()));
4347                         }
4348                     }
4349                 }
4350                 arg_idx++;
4351             }
4352             break;
4353
4354         case DW_TAG_unspecified_parameters:
4355             is_variadic = true;
4356             break;
4357
4358         case DW_TAG_template_type_parameter:
4359         case DW_TAG_template_value_parameter:
4360             ParseTemplateDIE (dwarf_cu, die,template_param_infos);
4361             break;
4362
4363         default:
4364             break;
4365         }
4366     }
4367     return arg_idx;
4368 }
4369
4370 size_t
4371 SymbolFileDWARF::ParseChildEnumerators
4372 (
4373     const SymbolContext& sc,
4374     lldb_private::ClangASTType &clang_type,
4375     bool is_signed,
4376     uint32_t enumerator_byte_size,
4377     DWARFCompileUnit* dwarf_cu,
4378     const DWARFDebugInfoEntry *parent_die
4379 )
4380 {
4381     if (parent_die == NULL)
4382         return 0;
4383
4384     size_t enumerators_added = 0;
4385     const DWARFDebugInfoEntry *die;
4386     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
4387
4388     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
4389     {
4390         const dw_tag_t tag = die->Tag();
4391         if (tag == DW_TAG_enumerator)
4392         {
4393             DWARFDebugInfoEntry::Attributes attributes;
4394             const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
4395             if (num_child_attributes > 0)
4396             {
4397                 const char *name = NULL;
4398                 bool got_value = false;
4399                 int64_t enum_value = 0;
4400                 Declaration decl;
4401
4402                 uint32_t i;
4403                 for (i=0; i<num_child_attributes; ++i)
4404                 {
4405                     const dw_attr_t attr = attributes.AttributeAtIndex(i);
4406                     DWARFFormValue form_value;
4407                     if (attributes.ExtractFormValueAtIndex(this, i, form_value))
4408                     {
4409                         switch (attr)
4410                         {
4411                         case DW_AT_const_value:
4412                             got_value = true;
4413                             if (is_signed)
4414                                 enum_value = form_value.Signed();
4415                             else
4416                                 enum_value = form_value.Unsigned();
4417                             break;
4418
4419                         case DW_AT_name:
4420                             name = form_value.AsCString(&get_debug_str_data());
4421                             break;
4422
4423                         case DW_AT_description:
4424                         default:
4425                         case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
4426                         case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
4427                         case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
4428                         case DW_AT_sibling:
4429                             break;
4430                         }
4431                     }
4432                 }
4433
4434                 if (name && name[0] && got_value)
4435                 {
4436                     clang_type.AddEnumerationValueToEnumerationType (clang_type.GetEnumerationIntegerType(),
4437                                                                      decl,
4438                                                                      name,
4439                                                                      enum_value,
4440                                                                      enumerator_byte_size * 8);
4441                     ++enumerators_added;
4442                 }
4443             }
4444         }
4445     }
4446     return enumerators_added;
4447 }
4448
4449 void
4450 SymbolFileDWARF::ParseChildArrayInfo
4451 (
4452     const SymbolContext& sc,
4453     DWARFCompileUnit* dwarf_cu,
4454     const DWARFDebugInfoEntry *parent_die,
4455     int64_t& first_index,
4456     std::vector<uint64_t>& element_orders,
4457     uint32_t& byte_stride,
4458     uint32_t& bit_stride
4459 )
4460 {
4461     if (parent_die == NULL)
4462         return;
4463
4464     const DWARFDebugInfoEntry *die;
4465     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
4466     for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
4467     {
4468         const dw_tag_t tag = die->Tag();
4469         switch (tag)
4470         {
4471         case DW_TAG_subrange_type:
4472             {
4473                 DWARFDebugInfoEntry::Attributes attributes;
4474                 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
4475                 if (num_child_attributes > 0)
4476                 {
4477                     uint64_t num_elements = 0;
4478                     uint64_t lower_bound = 0;
4479                     uint64_t upper_bound = 0;
4480                     bool upper_bound_valid = false;
4481                     uint32_t i;
4482                     for (i=0; i<num_child_attributes; ++i)
4483                     {
4484                         const dw_attr_t attr = attributes.AttributeAtIndex(i);
4485                         DWARFFormValue form_value;
4486                         if (attributes.ExtractFormValueAtIndex(this, i, form_value))
4487                         {
4488                             switch (attr)
4489                             {
4490                             case DW_AT_name:
4491                                 break;
4492
4493                             case DW_AT_count:
4494                                 num_elements = form_value.Unsigned();
4495                                 break;
4496
4497                             case DW_AT_bit_stride:
4498                                 bit_stride = form_value.Unsigned();
4499                                 break;
4500
4501                             case DW_AT_byte_stride:
4502                                 byte_stride = form_value.Unsigned();
4503                                 break;
4504
4505                             case DW_AT_lower_bound:
4506                                 lower_bound = form_value.Unsigned();
4507                                 break;
4508
4509                             case DW_AT_upper_bound:
4510                                 upper_bound_valid = true;
4511                                 upper_bound = form_value.Unsigned();
4512                                 break;
4513
4514                             default:
4515                             case DW_AT_abstract_origin:
4516                             case DW_AT_accessibility:
4517                             case DW_AT_allocated:
4518                             case DW_AT_associated:
4519                             case DW_AT_data_location:
4520                             case DW_AT_declaration:
4521                             case DW_AT_description:
4522                             case DW_AT_sibling:
4523                             case DW_AT_threads_scaled:
4524                             case DW_AT_type:
4525                             case DW_AT_visibility:
4526                                 break;
4527                             }
4528                         }
4529                     }
4530
4531                     if (num_elements == 0)
4532                     {
4533                         if (upper_bound_valid && upper_bound >= lower_bound)
4534                             num_elements = upper_bound - lower_bound + 1;
4535                     }
4536
4537                     element_orders.push_back (num_elements);
4538                 }
4539             }
4540             break;
4541         }
4542     }
4543 }
4544
4545 TypeSP
4546 SymbolFileDWARF::GetTypeForDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry* die)
4547 {
4548     TypeSP type_sp;
4549     if (die != NULL)
4550     {
4551         assert(dwarf_cu != NULL);
4552         Type *type_ptr = m_die_to_type.lookup (die);
4553         if (type_ptr == NULL)
4554         {
4555             CompileUnit* lldb_cu = GetCompUnitForDWARFCompUnit(dwarf_cu);
4556             assert (lldb_cu);
4557             SymbolContext sc(lldb_cu);
4558             type_sp = ParseType(sc, dwarf_cu, die, NULL);
4559         }
4560         else if (type_ptr != DIE_IS_BEING_PARSED)
4561         {
4562             // Grab the existing type from the master types lists
4563             type_sp = type_ptr->shared_from_this();
4564         }
4565
4566     }
4567     return type_sp;
4568 }
4569
4570 clang::DeclContext *
4571 SymbolFileDWARF::GetClangDeclContextContainingDIEOffset (dw_offset_t die_offset)
4572 {
4573     if (die_offset != DW_INVALID_OFFSET)
4574     {
4575         DWARFCompileUnitSP cu_sp;
4576         const DWARFDebugInfoEntry* die = DebugInfo()->GetDIEPtr(die_offset, &cu_sp);
4577         return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL);
4578     }
4579     return NULL;
4580 }
4581
4582 clang::DeclContext *
4583 SymbolFileDWARF::GetClangDeclContextForDIEOffset (const SymbolContext &sc, dw_offset_t die_offset)
4584 {
4585     if (die_offset != DW_INVALID_OFFSET)
4586     {
4587         DWARFDebugInfo* debug_info = DebugInfo();
4588         if (debug_info)
4589         {
4590             DWARFCompileUnitSP cu_sp;
4591             const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(die_offset, &cu_sp);
4592             if (die)
4593                 return GetClangDeclContextForDIE (sc, cu_sp.get(), die);
4594         }
4595     }
4596     return NULL;
4597 }
4598
4599 clang::NamespaceDecl *
4600 SymbolFileDWARF::ResolveNamespaceDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry *die)
4601 {
4602     if (die && die->Tag() == DW_TAG_namespace)
4603     {
4604         // See if we already parsed this namespace DIE and associated it with a
4605         // uniqued namespace declaration
4606         clang::NamespaceDecl *namespace_decl = static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die]);
4607         if (namespace_decl)
4608             return namespace_decl;
4609         else
4610         {
4611             const char *namespace_name = die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL);
4612             clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, NULL);
4613             namespace_decl = GetClangASTContext().GetUniqueNamespaceDeclaration (namespace_name, containing_decl_ctx);
4614             Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
4615             if (log)
4616             {
4617                 if (namespace_name)
4618                 {
4619                     GetObjectFile()->GetModule()->LogMessage (log,
4620                                                               "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace with DW_AT_name(\"%s\") => clang::NamespaceDecl *%p (original = %p)",
4621                                                               GetClangASTContext().getASTContext(),
4622                                                               MakeUserID(die->GetOffset()),
4623                                                               namespace_name,
4624                                                               namespace_decl,
4625                                                               namespace_decl->getOriginalNamespace());
4626                 }
4627                 else
4628                 {
4629                     GetObjectFile()->GetModule()->LogMessage (log,
4630                                                               "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p (original = %p)",
4631                                                               GetClangASTContext().getASTContext(),
4632                                                               MakeUserID(die->GetOffset()),
4633                                                               namespace_decl,
4634                                                               namespace_decl->getOriginalNamespace());
4635                 }
4636             }
4637
4638             if (namespace_decl)
4639                 LinkDeclContextToDIE((clang::DeclContext*)namespace_decl, die);
4640             return namespace_decl;
4641         }
4642     }
4643     return NULL;
4644 }
4645
4646 clang::DeclContext *
4647 SymbolFileDWARF::GetClangDeclContextForDIE (const SymbolContext &sc, DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
4648 {
4649     clang::DeclContext *clang_decl_ctx = GetCachedClangDeclContextForDIE (die);
4650     if (clang_decl_ctx)
4651         return clang_decl_ctx;
4652     // If this DIE has a specification, or an abstract origin, then trace to those.
4653
4654     dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET);
4655     if (die_offset != DW_INVALID_OFFSET)
4656         return GetClangDeclContextForDIEOffset (sc, die_offset);
4657
4658     die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET);
4659     if (die_offset != DW_INVALID_OFFSET)
4660         return GetClangDeclContextForDIEOffset (sc, die_offset);
4661
4662     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
4663     if (log)
4664         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));
4665     // This is the DIE we want.  Parse it, then query our map.
4666     bool assert_not_being_parsed = true;
4667     ResolveTypeUID (cu, die, assert_not_being_parsed);
4668
4669     clang_decl_ctx = GetCachedClangDeclContextForDIE (die);
4670
4671     return clang_decl_ctx;
4672 }
4673
4674 clang::DeclContext *
4675 SymbolFileDWARF::GetClangDeclContextContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die, const DWARFDebugInfoEntry **decl_ctx_die_copy)
4676 {
4677     if (m_clang_tu_decl == NULL)
4678         m_clang_tu_decl = GetClangASTContext().getASTContext()->getTranslationUnitDecl();
4679
4680     const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die);
4681
4682     if (decl_ctx_die_copy)
4683         *decl_ctx_die_copy = decl_ctx_die;
4684
4685     if (decl_ctx_die)
4686     {
4687
4688         DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find (decl_ctx_die);
4689         if (pos != m_die_to_decl_ctx.end())
4690             return pos->second;
4691
4692         switch (decl_ctx_die->Tag())
4693         {
4694         case DW_TAG_compile_unit:
4695             return m_clang_tu_decl;
4696
4697         case DW_TAG_namespace:
4698             return ResolveNamespaceDIE (cu, decl_ctx_die);
4699             break;
4700
4701         case DW_TAG_structure_type:
4702         case DW_TAG_union_type:
4703         case DW_TAG_class_type:
4704             {
4705                 Type* type = ResolveType (cu, decl_ctx_die);
4706                 if (type)
4707                 {
4708                     clang::DeclContext *decl_ctx = type->GetClangForwardType().GetDeclContextForType ();
4709                     if (decl_ctx)
4710                     {
4711                         LinkDeclContextToDIE (decl_ctx, decl_ctx_die);
4712                         if (decl_ctx)
4713                             return decl_ctx;
4714                     }
4715                 }
4716             }
4717             break;
4718
4719         default:
4720             break;
4721         }
4722     }
4723     return m_clang_tu_decl;
4724 }
4725
4726
4727 const DWARFDebugInfoEntry *
4728 SymbolFileDWARF::GetDeclContextDIEContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
4729 {
4730     if (cu && die)
4731     {
4732         const DWARFDebugInfoEntry * const decl_die = die;
4733
4734         while (die != NULL)
4735         {
4736             // If this is the original DIE that we are searching for a declaration
4737             // for, then don't look in the cache as we don't want our own decl
4738             // context to be our decl context...
4739             if (decl_die != die)
4740             {
4741                 switch (die->Tag())
4742                 {
4743                     case DW_TAG_compile_unit:
4744                     case DW_TAG_namespace:
4745                     case DW_TAG_structure_type:
4746                     case DW_TAG_union_type:
4747                     case DW_TAG_class_type:
4748                         return die;
4749
4750                     default:
4751                         break;
4752                 }
4753             }
4754
4755             dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET);
4756             if (die_offset != DW_INVALID_OFFSET)
4757             {
4758                 DWARFCompileUnit *spec_cu = cu;
4759                 const DWARFDebugInfoEntry *spec_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &spec_cu);
4760                 const DWARFDebugInfoEntry *spec_die_decl_ctx_die = GetDeclContextDIEContainingDIE (spec_cu, spec_die);
4761                 if (spec_die_decl_ctx_die)
4762                     return spec_die_decl_ctx_die;
4763             }
4764
4765             die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET);
4766             if (die_offset != DW_INVALID_OFFSET)
4767             {
4768                 DWARFCompileUnit *abs_cu = cu;
4769                 const DWARFDebugInfoEntry *abs_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &abs_cu);
4770                 const DWARFDebugInfoEntry *abs_die_decl_ctx_die = GetDeclContextDIEContainingDIE (abs_cu, abs_die);
4771                 if (abs_die_decl_ctx_die)
4772                     return abs_die_decl_ctx_die;
4773             }
4774
4775             die = die->GetParent();
4776         }
4777     }
4778     return NULL;
4779 }
4780
4781
4782 Symbol *
4783 SymbolFileDWARF::GetObjCClassSymbol (const ConstString &objc_class_name)
4784 {
4785     Symbol *objc_class_symbol = NULL;
4786     if (m_obj_file)
4787     {
4788         Symtab *symtab = m_obj_file->GetSymtab ();
4789         if (symtab)
4790         {
4791             objc_class_symbol = symtab->FindFirstSymbolWithNameAndType (objc_class_name,
4792                                                                         eSymbolTypeObjCClass,
4793                                                                         Symtab::eDebugNo,
4794                                                                         Symtab::eVisibilityAny);
4795         }
4796     }
4797     return objc_class_symbol;
4798 }
4799
4800 // Some compilers don't emit the DW_AT_APPLE_objc_complete_type attribute. If they don't
4801 // then we can end up looking through all class types for a complete type and never find
4802 // the full definition. We need to know if this attribute is supported, so we determine
4803 // this here and cache th result. We also need to worry about the debug map DWARF file
4804 // if we are doing darwin DWARF in .o file debugging.
4805 bool
4806 SymbolFileDWARF::Supports_DW_AT_APPLE_objc_complete_type (DWARFCompileUnit *cu)
4807 {
4808     if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate)
4809     {
4810         m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo;
4811         if (cu && cu->Supports_DW_AT_APPLE_objc_complete_type())
4812             m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes;
4813         else
4814         {
4815             DWARFDebugInfo* debug_info = DebugInfo();
4816             const uint32_t num_compile_units = GetNumCompileUnits();
4817             for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx)
4818             {
4819                 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx);
4820                 if (dwarf_cu != cu && dwarf_cu->Supports_DW_AT_APPLE_objc_complete_type())
4821                 {
4822                     m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes;
4823                     break;
4824                 }
4825             }
4826         }
4827         if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolNo && GetDebugMapSymfile ())
4828             return m_debug_map_symfile->Supports_DW_AT_APPLE_objc_complete_type (this);
4829     }
4830     return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes;
4831 }
4832
4833 // This function can be used when a DIE is found that is a forward declaration
4834 // DIE and we want to try and find a type that has the complete definition.
4835 TypeSP
4836 SymbolFileDWARF::FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die,
4837                                                        const ConstString &type_name,
4838                                                        bool must_be_implementation)
4839 {
4840
4841     TypeSP type_sp;
4842
4843     if (!type_name || (must_be_implementation && !GetObjCClassSymbol (type_name)))
4844         return type_sp;
4845
4846     DIEArray die_offsets;
4847
4848     if (m_using_apple_tables)
4849     {
4850         if (m_apple_types_ap.get())
4851         {
4852             const char *name_cstr = type_name.GetCString();
4853             m_apple_types_ap->FindCompleteObjCClassByName (name_cstr, die_offsets, must_be_implementation);
4854         }
4855     }
4856     else
4857     {
4858         if (!m_indexed)
4859             Index ();
4860
4861         m_type_index.Find (type_name, die_offsets);
4862     }
4863
4864     const size_t num_matches = die_offsets.size();
4865
4866     DWARFCompileUnit* type_cu = NULL;
4867     const DWARFDebugInfoEntry* type_die = NULL;
4868     if (num_matches)
4869     {
4870         DWARFDebugInfo* debug_info = DebugInfo();
4871         for (size_t i=0; i<num_matches; ++i)
4872         {
4873             const dw_offset_t die_offset = die_offsets[i];
4874             type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
4875
4876             if (type_die)
4877             {
4878                 bool try_resolving_type = false;
4879
4880                 // Don't try and resolve the DIE we are looking for with the DIE itself!
4881                 if (type_die != die)
4882                 {
4883                     switch (type_die->Tag())
4884                     {
4885                         case DW_TAG_class_type:
4886                         case DW_TAG_structure_type:
4887                             try_resolving_type = true;
4888                             break;
4889                         default:
4890                             break;
4891                     }
4892                 }
4893
4894                 if (try_resolving_type)
4895                 {
4896                     if (must_be_implementation && type_cu->Supports_DW_AT_APPLE_objc_complete_type())
4897                         try_resolving_type = type_die->GetAttributeValueAsUnsigned (this, type_cu, DW_AT_APPLE_objc_complete_type, 0);
4898
4899                     if (try_resolving_type)
4900                     {
4901                         Type *resolved_type = ResolveType (type_cu, type_die, false);
4902                         if (resolved_type && resolved_type != DIE_IS_BEING_PARSED)
4903                         {
4904                             DEBUG_PRINTF ("resolved 0x%8.8" PRIx64 " from %s to 0x%8.8" PRIx64 " (cu 0x%8.8" PRIx64 ")\n",
4905                                           MakeUserID(die->GetOffset()),
4906                                           m_obj_file->GetFileSpec().GetFilename().AsCString(),
4907                                           MakeUserID(type_die->GetOffset()),
4908                                           MakeUserID(type_cu->GetOffset()));
4909
4910                             if (die)
4911                                 m_die_to_type[die] = resolved_type;
4912                             type_sp = resolved_type->shared_from_this();
4913                             break;
4914                         }
4915                     }
4916                 }
4917             }
4918             else
4919             {
4920                 if (m_using_apple_tables)
4921                 {
4922                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
4923                                                                die_offset, type_name.GetCString());
4924                 }
4925             }
4926
4927         }
4928     }
4929     return type_sp;
4930 }
4931
4932
4933 //----------------------------------------------------------------------
4934 // This function helps to ensure that the declaration contexts match for
4935 // two different DIEs. Often times debug information will refer to a
4936 // forward declaration of a type (the equivalent of "struct my_struct;".
4937 // There will often be a declaration of that type elsewhere that has the
4938 // full definition. When we go looking for the full type "my_struct", we
4939 // will find one or more matches in the accelerator tables and we will
4940 // then need to make sure the type was in the same declaration context
4941 // as the original DIE. This function can efficiently compare two DIEs
4942 // and will return true when the declaration context matches, and false
4943 // when they don't.
4944 //----------------------------------------------------------------------
4945 bool
4946 SymbolFileDWARF::DIEDeclContextsMatch (DWARFCompileUnit* cu1, const DWARFDebugInfoEntry *die1,
4947                                        DWARFCompileUnit* cu2, const DWARFDebugInfoEntry *die2)
4948 {
4949     if (die1 == die2)
4950         return true;
4951
4952 #if defined (LLDB_CONFIGURATION_DEBUG)
4953     // You can't and shouldn't call this function with a compile unit from
4954     // two different SymbolFileDWARF instances.
4955     assert (DebugInfo()->ContainsCompileUnit (cu1));
4956     assert (DebugInfo()->ContainsCompileUnit (cu2));
4957 #endif
4958
4959     DWARFDIECollection decl_ctx_1;
4960     DWARFDIECollection decl_ctx_2;
4961     //The declaration DIE stack is a stack of the declaration context
4962     // DIEs all the way back to the compile unit. If a type "T" is
4963     // declared inside a class "B", and class "B" is declared inside
4964     // a class "A" and class "A" is in a namespace "lldb", and the
4965     // namespace is in a compile unit, there will be a stack of DIEs:
4966     //
4967     //   [0] DW_TAG_class_type for "B"
4968     //   [1] DW_TAG_class_type for "A"
4969     //   [2] DW_TAG_namespace  for "lldb"
4970     //   [3] DW_TAG_compile_unit for the source file.
4971     //
4972     // We grab both contexts and make sure that everything matches
4973     // all the way back to the compiler unit.
4974
4975     // First lets grab the decl contexts for both DIEs
4976     die1->GetDeclContextDIEs (this, cu1, decl_ctx_1);
4977     die2->GetDeclContextDIEs (this, cu2, decl_ctx_2);
4978     // Make sure the context arrays have the same size, otherwise
4979     // we are done
4980     const size_t count1 = decl_ctx_1.Size();
4981     const size_t count2 = decl_ctx_2.Size();
4982     if (count1 != count2)
4983         return false;
4984
4985     // Make sure the DW_TAG values match all the way back up the the
4986     // compile unit. If they don't, then we are done.
4987     const DWARFDebugInfoEntry *decl_ctx_die1;
4988     const DWARFDebugInfoEntry *decl_ctx_die2;
4989     size_t i;
4990     for (i=0; i<count1; i++)
4991     {
4992         decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i);
4993         decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i);
4994         if (decl_ctx_die1->Tag() != decl_ctx_die2->Tag())
4995             return false;
4996     }
4997 #if defined LLDB_CONFIGURATION_DEBUG
4998
4999     // Make sure the top item in the decl context die array is always
5000     // DW_TAG_compile_unit. If it isn't then something went wrong in
5001     // the DWARFDebugInfoEntry::GetDeclContextDIEs() function...
5002     assert (decl_ctx_1.GetDIEPtrAtIndex (count1 - 1)->Tag() == DW_TAG_compile_unit);
5003
5004 #endif
5005     // Always skip the compile unit when comparing by only iterating up to
5006     // "count - 1". Here we compare the names as we go.
5007     for (i=0; i<count1 - 1; i++)
5008     {
5009         decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i);
5010         decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i);
5011         const char *name1 = decl_ctx_die1->GetName(this, cu1);
5012         const char *name2 = decl_ctx_die2->GetName(this, cu2);
5013         // If the string was from a DW_FORM_strp, then the pointer will often
5014         // be the same!
5015         if (name1 == name2)
5016             continue;
5017
5018         // Name pointers are not equal, so only compare the strings
5019         // if both are not NULL.
5020         if (name1 && name2)
5021         {
5022             // If the strings don't compare, we are done...
5023             if (strcmp(name1, name2) != 0)
5024                 return false;
5025         }
5026         else
5027         {
5028             // One name was NULL while the other wasn't
5029             return false;
5030         }
5031     }
5032     // We made it through all of the checks and the declaration contexts
5033     // are equal.
5034     return true;
5035 }
5036
5037 // This function can be used when a DIE is found that is a forward declaration
5038 // DIE and we want to try and find a type that has the complete definition.
5039 // "cu" and "die" must be from this SymbolFileDWARF
5040 TypeSP
5041 SymbolFileDWARF::FindDefinitionTypeForDIE (DWARFCompileUnit* cu,
5042                                            const DWARFDebugInfoEntry *die,
5043                                            const ConstString &type_name)
5044 {
5045     TypeSP type_sp;
5046
5047 #if defined (LLDB_CONFIGURATION_DEBUG)
5048     // You can't and shouldn't call this function with a compile unit from
5049     // another SymbolFileDWARF instance.
5050     assert (DebugInfo()->ContainsCompileUnit (cu));
5051 #endif
5052
5053     if (cu == NULL || die == NULL || !type_name)
5054         return type_sp;
5055
5056     std::string qualified_name;
5057
5058     Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION|DWARF_LOG_LOOKUPS));
5059     if (log)
5060     {
5061         die->GetQualifiedName(this, cu, qualified_name);
5062         GetObjectFile()->GetModule()->LogMessage (log,
5063                                                   "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x (%s), name='%s')",
5064                                                   die->GetOffset(),
5065                                                   qualified_name.c_str(),
5066                                                   type_name.GetCString());
5067     }
5068
5069     DIEArray die_offsets;
5070
5071     if (m_using_apple_tables)
5072     {
5073         if (m_apple_types_ap.get())
5074         {
5075             const bool has_tag = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeTag);
5076             const bool has_qualified_name_hash = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeQualNameHash);
5077             if (has_tag && has_qualified_name_hash)
5078             {
5079                 if (qualified_name.empty())
5080                     die->GetQualifiedName(this, cu, qualified_name);
5081
5082                 const uint32_t qualified_name_hash = MappedHash::HashStringUsingDJB (qualified_name.c_str());
5083                 if (log)
5084                     GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTagAndQualifiedNameHash()");
5085                 m_apple_types_ap->FindByNameAndTagAndQualifiedNameHash (type_name.GetCString(), die->Tag(), qualified_name_hash, die_offsets);
5086             }
5087             else if (has_tag > 1)
5088             {
5089                 if (log)
5090                     GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTag()");
5091                 m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), die->Tag(), die_offsets);
5092             }
5093             else
5094             {
5095                 m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets);
5096             }
5097         }
5098     }
5099     else
5100     {
5101         if (!m_indexed)
5102             Index ();
5103
5104         m_type_index.Find (type_name, die_offsets);
5105     }
5106
5107     const size_t num_matches = die_offsets.size();
5108
5109     const dw_tag_t die_tag = die->Tag();
5110
5111     DWARFCompileUnit* type_cu = NULL;
5112     const DWARFDebugInfoEntry* type_die = NULL;
5113     if (num_matches)
5114     {
5115         DWARFDebugInfo* debug_info = DebugInfo();
5116         for (size_t i=0; i<num_matches; ++i)
5117         {
5118             const dw_offset_t die_offset = die_offsets[i];
5119             type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
5120
5121             if (type_die)
5122             {
5123                 bool try_resolving_type = false;
5124
5125                 // Don't try and resolve the DIE we are looking for with the DIE itself!
5126                 if (type_die != die)
5127                 {
5128                     const dw_tag_t type_die_tag = type_die->Tag();
5129                     // Make sure the tags match
5130                     if (type_die_tag == die_tag)
5131                     {
5132                         // The tags match, lets try resolving this type
5133                         try_resolving_type = true;
5134                     }
5135                     else
5136                     {
5137                         // The tags don't match, but we need to watch our for a
5138                         // forward declaration for a struct and ("struct foo")
5139                         // ends up being a class ("class foo { ... };") or
5140                         // vice versa.
5141                         switch (type_die_tag)
5142                         {
5143                         case DW_TAG_class_type:
5144                             // We had a "class foo", see if we ended up with a "struct foo { ... };"
5145                             try_resolving_type = (die_tag == DW_TAG_structure_type);
5146                             break;
5147                         case DW_TAG_structure_type:
5148                             // We had a "struct foo", see if we ended up with a "class foo { ... };"
5149                             try_resolving_type = (die_tag == DW_TAG_class_type);
5150                             break;
5151                         default:
5152                             // Tags don't match, don't event try to resolve
5153                             // using this type whose name matches....
5154                             break;
5155                         }
5156                     }
5157                 }
5158
5159                 if (try_resolving_type)
5160                 {
5161                     if (log)
5162                     {
5163                         std::string qualified_name;
5164                         type_die->GetQualifiedName(this, cu, qualified_name);
5165                         GetObjectFile()->GetModule()->LogMessage (log,
5166                                                                   "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x, name='%s') trying die=0x%8.8x (%s)",
5167                                                                   die->GetOffset(),
5168                                                                   type_name.GetCString(),
5169                                                                   type_die->GetOffset(),
5170                                                                   qualified_name.c_str());
5171                     }
5172
5173                     // Make sure the decl contexts match all the way up
5174                     if (DIEDeclContextsMatch(cu, die, type_cu, type_die))
5175                     {
5176                         Type *resolved_type = ResolveType (type_cu, type_die, false);
5177                         if (resolved_type && resolved_type != DIE_IS_BEING_PARSED)
5178                         {
5179                             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",
5180                                           MakeUserID(die->GetOffset()),
5181                                           MakeUserID(cu->GetOffset()),
5182                                           m_obj_file->GetFileSpec().GetFilename().AsCString(),
5183                                           MakeUserID(type_die->GetOffset()),
5184                                           MakeUserID(type_cu->GetOffset()));
5185
5186                             m_die_to_type[die] = resolved_type;
5187                             type_sp = resolved_type->shared_from_this();
5188                             break;
5189                         }
5190                     }
5191                 }
5192                 else
5193                 {
5194                     if (log)
5195                     {
5196                         std::string qualified_name;
5197                         type_die->GetQualifiedName(this, cu, qualified_name);
5198                         GetObjectFile()->GetModule()->LogMessage (log,
5199                                                                   "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x, name='%s') ignoring die=0x%8.8x (%s)",
5200                                                                   die->GetOffset(),
5201                                                                   type_name.GetCString(),
5202                                                                   type_die->GetOffset(),
5203                                                                   qualified_name.c_str());
5204                     }
5205                 }
5206             }
5207             else
5208             {
5209                 if (m_using_apple_tables)
5210                 {
5211                     GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
5212                                                                                die_offset, type_name.GetCString());
5213                 }
5214             }
5215
5216         }
5217     }
5218     return type_sp;
5219 }
5220
5221 TypeSP
5222 SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &dwarf_decl_ctx)
5223 {
5224     TypeSP type_sp;
5225
5226     const uint32_t dwarf_decl_ctx_count = dwarf_decl_ctx.GetSize();
5227     if (dwarf_decl_ctx_count > 0)
5228     {
5229         const ConstString type_name(dwarf_decl_ctx[0].name);
5230         const dw_tag_t tag = dwarf_decl_ctx[0].tag;
5231
5232         if (type_name)
5233         {
5234             Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION|DWARF_LOG_LOOKUPS));
5235             if (log)
5236             {
5237                 GetObjectFile()->GetModule()->LogMessage (log,
5238                                                           "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s')",
5239                                                           DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
5240                                                           dwarf_decl_ctx.GetQualifiedName());
5241             }
5242
5243             DIEArray die_offsets;
5244
5245             if (m_using_apple_tables)
5246             {
5247                 if (m_apple_types_ap.get())
5248                 {
5249                     const bool has_tag = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeTag);
5250                     const bool has_qualified_name_hash = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeQualNameHash);
5251                     if (has_tag && has_qualified_name_hash)
5252                     {
5253                         const char *qualified_name = dwarf_decl_ctx.GetQualifiedName();
5254                         const uint32_t qualified_name_hash = MappedHash::HashStringUsingDJB (qualified_name);
5255                         if (log)
5256                             GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTagAndQualifiedNameHash()");
5257                         m_apple_types_ap->FindByNameAndTagAndQualifiedNameHash (type_name.GetCString(), tag, qualified_name_hash, die_offsets);
5258                     }
5259                     else if (has_tag)
5260                     {
5261                         if (log)
5262                             GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTag()");
5263                         m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), tag, die_offsets);
5264                     }
5265                     else
5266                     {
5267                         m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets);
5268                     }
5269                 }
5270             }
5271             else
5272             {
5273                 if (!m_indexed)
5274                     Index ();
5275
5276                 m_type_index.Find (type_name, die_offsets);
5277             }
5278
5279             const size_t num_matches = die_offsets.size();
5280
5281
5282             DWARFCompileUnit* type_cu = NULL;
5283             const DWARFDebugInfoEntry* type_die = NULL;
5284             if (num_matches)
5285             {
5286                 DWARFDebugInfo* debug_info = DebugInfo();
5287                 for (size_t i=0; i<num_matches; ++i)
5288                 {
5289                     const dw_offset_t die_offset = die_offsets[i];
5290                     type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
5291
5292                     if (type_die)
5293                     {
5294                         bool try_resolving_type = false;
5295
5296                         // Don't try and resolve the DIE we are looking for with the DIE itself!
5297                         const dw_tag_t type_tag = type_die->Tag();
5298                         // Make sure the tags match
5299                         if (type_tag == tag)
5300                         {
5301                             // The tags match, lets try resolving this type
5302                             try_resolving_type = true;
5303                         }
5304                         else
5305                         {
5306                             // The tags don't match, but we need to watch our for a
5307                             // forward declaration for a struct and ("struct foo")
5308                             // ends up being a class ("class foo { ... };") or
5309                             // vice versa.
5310                             switch (type_tag)
5311                             {
5312                                 case DW_TAG_class_type:
5313                                     // We had a "class foo", see if we ended up with a "struct foo { ... };"
5314                                     try_resolving_type = (tag == DW_TAG_structure_type);
5315                                     break;
5316                                 case DW_TAG_structure_type:
5317                                     // We had a "struct foo", see if we ended up with a "class foo { ... };"
5318                                     try_resolving_type = (tag == DW_TAG_class_type);
5319                                     break;
5320                                 default:
5321                                     // Tags don't match, don't event try to resolve
5322                                     // using this type whose name matches....
5323                                     break;
5324                             }
5325                         }
5326
5327                         if (try_resolving_type)
5328                         {
5329                             DWARFDeclContext type_dwarf_decl_ctx;
5330                             type_die->GetDWARFDeclContext (this, type_cu, type_dwarf_decl_ctx);
5331
5332                             if (log)
5333                             {
5334                                 GetObjectFile()->GetModule()->LogMessage (log,
5335                                                                           "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') trying die=0x%8.8x (%s)",
5336                                                                           DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
5337                                                                           dwarf_decl_ctx.GetQualifiedName(),
5338                                                                           type_die->GetOffset(),
5339                                                                           type_dwarf_decl_ctx.GetQualifiedName());
5340                             }
5341
5342                             // Make sure the decl contexts match all the way up
5343                             if (dwarf_decl_ctx == type_dwarf_decl_ctx)
5344                             {
5345                                 Type *resolved_type = ResolveType (type_cu, type_die, false);
5346                                 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED)
5347                                 {
5348                                     type_sp = resolved_type->shared_from_this();
5349                                     break;
5350                                 }
5351                             }
5352                         }
5353                         else
5354                         {
5355                             if (log)
5356                             {
5357                                 std::string qualified_name;
5358                                 type_die->GetQualifiedName(this, type_cu, qualified_name);
5359                                 GetObjectFile()->GetModule()->LogMessage (log,
5360                                                                           "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') ignoring die=0x%8.8x (%s)",
5361                                                                           DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
5362                                                                           dwarf_decl_ctx.GetQualifiedName(),
5363                                                                           type_die->GetOffset(),
5364                                                                           qualified_name.c_str());
5365                             }
5366                         }
5367                     }
5368                     else
5369                     {
5370                         if (m_using_apple_tables)
5371                         {
5372                             GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
5373                                                                                        die_offset, type_name.GetCString());
5374                         }
5375                     }
5376
5377                 }
5378             }
5379         }
5380     }
5381     return type_sp;
5382 }
5383
5384 bool
5385 SymbolFileDWARF::CopyUniqueClassMethodTypes (SymbolFileDWARF *src_symfile,
5386                                              Type *class_type,
5387                                              DWARFCompileUnit* src_cu,
5388                                              const DWARFDebugInfoEntry *src_class_die,
5389                                              DWARFCompileUnit* dst_cu,
5390                                              const DWARFDebugInfoEntry *dst_class_die,
5391                                              llvm::SmallVectorImpl <const DWARFDebugInfoEntry *> &failures)
5392 {
5393     if (!class_type || !src_cu || !src_class_die || !dst_cu || !dst_class_die)
5394         return false;
5395     if (src_class_die->Tag() != dst_class_die->Tag())
5396         return false;
5397
5398     // We need to complete the class type so we can get all of the method types
5399     // parsed so we can then unique those types to their equivalent counterparts
5400     // in "dst_cu" and "dst_class_die"
5401     class_type->GetClangFullType();
5402
5403     const DWARFDebugInfoEntry *src_die;
5404     const DWARFDebugInfoEntry *dst_die;
5405     UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die;
5406     UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die;
5407     UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die_artificial;
5408     UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die_artificial;
5409     for (src_die = src_class_die->GetFirstChild(); src_die != NULL; src_die = src_die->GetSibling())
5410     {
5411         if (src_die->Tag() == DW_TAG_subprogram)
5412         {
5413             // Make sure this is a declaration and not a concrete instance by looking
5414             // for DW_AT_declaration set to 1. Sometimes concrete function instances
5415             // are placed inside the class definitions and shouldn't be included in
5416             // the list of things are are tracking here.
5417             if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_declaration, 0) == 1)
5418             {
5419                 const char *src_name = src_die->GetMangledName (src_symfile, src_cu);
5420                 if (src_name)
5421                 {
5422                     ConstString src_const_name(src_name);
5423                     if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_artificial, 0))
5424                         src_name_to_die_artificial.Append(src_const_name.GetCString(), src_die);
5425                     else
5426                         src_name_to_die.Append(src_const_name.GetCString(), src_die);
5427                 }
5428             }
5429         }
5430     }
5431     for (dst_die = dst_class_die->GetFirstChild(); dst_die != NULL; dst_die = dst_die->GetSibling())
5432     {
5433         if (dst_die->Tag() == DW_TAG_subprogram)
5434         {
5435             // Make sure this is a declaration and not a concrete instance by looking
5436             // for DW_AT_declaration set to 1. Sometimes concrete function instances
5437             // are placed inside the class definitions and shouldn't be included in
5438             // the list of things are are tracking here.
5439             if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_declaration, 0) == 1)
5440             {
5441                 const char *dst_name = dst_die->GetMangledName (this, dst_cu);
5442                 if (dst_name)
5443                 {
5444                     ConstString dst_const_name(dst_name);
5445                     if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_artificial, 0))
5446                         dst_name_to_die_artificial.Append(dst_const_name.GetCString(), dst_die);
5447                     else
5448                         dst_name_to_die.Append(dst_const_name.GetCString(), dst_die);
5449                 }
5450             }
5451         }
5452     }
5453     const uint32_t src_size = src_name_to_die.GetSize ();
5454     const uint32_t dst_size = dst_name_to_die.GetSize ();
5455     Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | DWARF_LOG_TYPE_COMPLETION));
5456
5457     // Is everything kosher so we can go through the members at top speed?
5458     bool fast_path = true;
5459
5460     if (src_size != dst_size)
5461     {
5462         if (src_size != 0 && dst_size != 0)
5463         {
5464             if (log)
5465                 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)",
5466                             src_class_die->GetOffset(),
5467                             dst_class_die->GetOffset(),
5468                             src_size,
5469                             dst_size);
5470         }
5471
5472         fast_path = false;
5473     }
5474
5475     uint32_t idx;
5476
5477     if (fast_path)
5478     {
5479         for (idx = 0; idx < src_size; ++idx)
5480         {
5481             src_die = src_name_to_die.GetValueAtIndexUnchecked (idx);
5482             dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx);
5483
5484             if (src_die->Tag() != dst_die->Tag())
5485             {
5486                 if (log)
5487                     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)",
5488                                 src_class_die->GetOffset(),
5489                                 dst_class_die->GetOffset(),
5490                                 src_die->GetOffset(),
5491                                 DW_TAG_value_to_name(src_die->Tag()),
5492                                 dst_die->GetOffset(),
5493                                 DW_TAG_value_to_name(src_die->Tag()));
5494                 fast_path = false;
5495             }
5496
5497             const char *src_name = src_die->GetMangledName (src_symfile, src_cu);
5498             const char *dst_name = dst_die->GetMangledName (this, dst_cu);
5499
5500             // Make sure the names match
5501             if (src_name == dst_name || (strcmp (src_name, dst_name) == 0))
5502                 continue;
5503
5504             if (log)
5505                 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)",
5506                             src_class_die->GetOffset(),
5507                             dst_class_die->GetOffset(),
5508                             src_die->GetOffset(),
5509                             src_name,
5510                             dst_die->GetOffset(),
5511                             dst_name);
5512
5513             fast_path = false;
5514         }
5515     }
5516
5517     // Now do the work of linking the DeclContexts and Types.
5518     if (fast_path)
5519     {
5520         // We can do this quickly.  Just run across the tables index-for-index since
5521         // we know each node has matching names and tags.
5522         for (idx = 0; idx < src_size; ++idx)
5523         {
5524             src_die = src_name_to_die.GetValueAtIndexUnchecked (idx);
5525             dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx);
5526
5527             clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die];
5528             if (src_decl_ctx)
5529             {
5530                 if (log)
5531                     log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", src_decl_ctx, src_die->GetOffset(), dst_die->GetOffset());
5532                 LinkDeclContextToDIE (src_decl_ctx, dst_die);
5533             }
5534             else
5535             {
5536                 if (log)
5537                     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());
5538             }
5539
5540             Type *src_child_type = m_die_to_type[src_die];
5541             if (src_child_type)
5542             {
5543                 if (log)
5544                     log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", src_child_type, src_child_type->GetID(), src_die->GetOffset(), dst_die->GetOffset());
5545                 m_die_to_type[dst_die] = src_child_type;
5546             }
5547             else
5548             {
5549                 if (log)
5550                     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());
5551             }
5552         }
5553     }
5554     else
5555     {
5556         // We must do this slowly.  For each member of the destination, look
5557         // up a member in the source with the same name, check its tag, and
5558         // unique them if everything matches up.  Report failures.
5559
5560         if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty())
5561         {
5562             src_name_to_die.Sort();
5563
5564             for (idx = 0; idx < dst_size; ++idx)
5565             {
5566                 const char *dst_name = dst_name_to_die.GetCStringAtIndex(idx);
5567                 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
5568                 src_die = src_name_to_die.Find(dst_name, NULL);
5569
5570                 if (src_die && (src_die->Tag() == dst_die->Tag()))
5571                 {
5572                     clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die];
5573                     if (src_decl_ctx)
5574                     {
5575                         if (log)
5576                             log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", src_decl_ctx, src_die->GetOffset(), dst_die->GetOffset());
5577                         LinkDeclContextToDIE (src_decl_ctx, dst_die);
5578                     }
5579                     else
5580                     {
5581                         if (log)
5582                             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());
5583                     }
5584
5585                     Type *src_child_type = m_die_to_type[src_die];
5586                     if (src_child_type)
5587                     {
5588                         if (log)
5589                             log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", src_child_type, src_child_type->GetID(), src_die->GetOffset(), dst_die->GetOffset());
5590                         m_die_to_type[dst_die] = src_child_type;
5591                     }
5592                     else
5593                     {
5594                         if (log)
5595                             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());
5596                     }
5597                 }
5598                 else
5599                 {
5600                     if (log)
5601                         log->Printf ("warning: couldn't find a match for 0x%8.8x", dst_die->GetOffset());
5602
5603                     failures.push_back(dst_die);
5604                 }
5605             }
5606         }
5607     }
5608
5609     const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize ();
5610     const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize ();
5611
5612     UniqueCStringMap<const DWARFDebugInfoEntry *> name_to_die_artificial_not_in_src;
5613
5614     if (src_size_artificial && dst_size_artificial)
5615     {
5616         dst_name_to_die_artificial.Sort();
5617
5618         for (idx = 0; idx < src_size_artificial; ++idx)
5619         {
5620             const char *src_name_artificial = src_name_to_die_artificial.GetCStringAtIndex(idx);
5621             src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked (idx);
5622             dst_die = dst_name_to_die_artificial.Find(src_name_artificial, NULL);
5623
5624             if (dst_die)
5625             {
5626                 // Both classes have the artificial types, link them
5627                 clang::DeclContext *src_decl_ctx = m_die_to_decl_ctx[src_die];
5628                 if (src_decl_ctx)
5629                 {
5630                     if (log)
5631                         log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", src_decl_ctx, src_die->GetOffset(), dst_die->GetOffset());
5632                     LinkDeclContextToDIE (src_decl_ctx, dst_die);
5633                 }
5634                 else
5635                 {
5636                     if (log)
5637                         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());
5638                 }
5639
5640                 Type *src_child_type = m_die_to_type[src_die];
5641                 if (src_child_type)
5642                 {
5643                     if (log)
5644                         log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", src_child_type, src_child_type->GetID(), src_die->GetOffset(), dst_die->GetOffset());
5645                     m_die_to_type[dst_die] = src_child_type;
5646                 }
5647                 else
5648                 {
5649                     if (log)
5650                         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());
5651                 }
5652             }
5653         }
5654     }
5655
5656     if (dst_size_artificial)
5657     {
5658         for (idx = 0; idx < dst_size_artificial; ++idx)
5659         {
5660             const char *dst_name_artificial = dst_name_to_die_artificial.GetCStringAtIndex(idx);
5661             dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked (idx);
5662             if (log)
5663                 log->Printf ("warning: need to create artificial method for 0x%8.8x for method '%s'", dst_die->GetOffset(), dst_name_artificial);
5664
5665             failures.push_back(dst_die);
5666         }
5667     }
5668
5669     return (failures.size() != 0);
5670 }
5671
5672 TypeSP
5673 SymbolFileDWARF::ParseType (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die, bool *type_is_new_ptr)
5674 {
5675     TypeSP type_sp;
5676
5677     if (type_is_new_ptr)
5678         *type_is_new_ptr = false;
5679
5680 #if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE)
5681     static DIEStack g_die_stack;
5682     DIEStack::ScopedPopper scoped_die_logger(g_die_stack);
5683 #endif
5684
5685     AccessType accessibility = eAccessNone;
5686     if (die != NULL)
5687     {
5688         Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
5689         if (log)
5690         {
5691             const DWARFDebugInfoEntry *context_die;
5692             clang::DeclContext *context = GetClangDeclContextContainingDIE (dwarf_cu, die, &context_die);
5693
5694             GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')",
5695                         die->GetOffset(),
5696                         context,
5697                         context_die->GetOffset(),
5698                         DW_TAG_value_to_name(die->Tag()),
5699                         die->GetName(this, dwarf_cu));
5700
5701 #if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE)
5702             scoped_die_logger.Push (dwarf_cu, die);
5703             g_die_stack.LogDIEs(log, this);
5704 #endif
5705         }
5706 //
5707 //        Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
5708 //        if (log && dwarf_cu)
5709 //        {
5710 //            StreamString s;
5711 //            die->DumpLocation (this, dwarf_cu, s);
5712 //            GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData());
5713 //
5714 //        }
5715
5716         Type *type_ptr = m_die_to_type.lookup (die);
5717         TypeList* type_list = GetTypeList();
5718         if (type_ptr == NULL)
5719         {
5720             ClangASTContext &ast = GetClangASTContext();
5721             if (type_is_new_ptr)
5722                 *type_is_new_ptr = true;
5723
5724             const dw_tag_t tag = die->Tag();
5725
5726             bool is_forward_declaration = false;
5727             DWARFDebugInfoEntry::Attributes attributes;
5728             const char *type_name_cstr = NULL;
5729             ConstString type_name_const_str;
5730             Type::ResolveState resolve_state = Type::eResolveStateUnresolved;
5731             uint64_t byte_size = 0;
5732             Declaration decl;
5733
5734             Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID;
5735             ClangASTType clang_type;
5736
5737             dw_attr_t attr;
5738
5739             switch (tag)
5740             {
5741             case DW_TAG_base_type:
5742             case DW_TAG_pointer_type:
5743             case DW_TAG_reference_type:
5744             case DW_TAG_rvalue_reference_type:
5745             case DW_TAG_typedef:
5746             case DW_TAG_const_type:
5747             case DW_TAG_restrict_type:
5748             case DW_TAG_volatile_type:
5749             case DW_TAG_unspecified_type:
5750                 {
5751                     // Set a bit that lets us know that we are currently parsing this
5752                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
5753
5754                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
5755                     uint32_t encoding = 0;
5756                     lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
5757
5758                     if (num_attributes > 0)
5759                     {
5760                         uint32_t i;
5761                         for (i=0; i<num_attributes; ++i)
5762                         {
5763                             attr = attributes.AttributeAtIndex(i);
5764                             DWARFFormValue form_value;
5765                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
5766                             {
5767                                 switch (attr)
5768                                 {
5769                                 case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
5770                                 case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
5771                                 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
5772                                 case DW_AT_name:
5773
5774                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
5775                                     // Work around a bug in llvm-gcc where they give a name to a reference type which doesn't
5776                                     // include the "&"...
5777                                     if (tag == DW_TAG_reference_type)
5778                                     {
5779                                         if (strchr (type_name_cstr, '&') == NULL)
5780                                             type_name_cstr = NULL;
5781                                     }
5782                                     if (type_name_cstr)
5783                                         type_name_const_str.SetCString(type_name_cstr);
5784                                     break;
5785                                 case DW_AT_byte_size:   byte_size = form_value.Unsigned(); break;
5786                                 case DW_AT_encoding:    encoding = form_value.Unsigned(); break;
5787                                 case DW_AT_type:        encoding_uid = form_value.Reference(dwarf_cu); break;
5788                                 default:
5789                                 case DW_AT_sibling:
5790                                     break;
5791                                 }
5792                             }
5793                         }
5794                     }
5795
5796                     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);
5797
5798                     switch (tag)
5799                     {
5800                     default:
5801                         break;
5802
5803                     case DW_TAG_unspecified_type:
5804                         if (strcmp(type_name_cstr, "nullptr_t") == 0 ||
5805                             strcmp(type_name_cstr, "decltype(nullptr)") == 0 )
5806                         {
5807                             resolve_state = Type::eResolveStateFull;
5808                             clang_type = ast.GetBasicType(eBasicTypeNullPtr);
5809                             break;
5810                         }
5811                         // Fall through to base type below in case we can handle the type there...
5812
5813                     case DW_TAG_base_type:
5814                         resolve_state = Type::eResolveStateFull;
5815                         clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr,
5816                                                                                    encoding,
5817                                                                                    byte_size * 8);
5818                         break;
5819
5820                     case DW_TAG_pointer_type:           encoding_data_type = Type::eEncodingIsPointerUID;           break;
5821                     case DW_TAG_reference_type:         encoding_data_type = Type::eEncodingIsLValueReferenceUID;   break;
5822                     case DW_TAG_rvalue_reference_type:  encoding_data_type = Type::eEncodingIsRValueReferenceUID;   break;
5823                     case DW_TAG_typedef:                encoding_data_type = Type::eEncodingIsTypedefUID;           break;
5824                     case DW_TAG_const_type:             encoding_data_type = Type::eEncodingIsConstUID;             break;
5825                     case DW_TAG_restrict_type:          encoding_data_type = Type::eEncodingIsRestrictUID;          break;
5826                     case DW_TAG_volatile_type:          encoding_data_type = Type::eEncodingIsVolatileUID;          break;
5827                     }
5828
5829                     if (!clang_type && (encoding_data_type == Type::eEncodingIsPointerUID || encoding_data_type == Type::eEncodingIsTypedefUID) && sc.comp_unit != NULL)
5830                     {
5831                         bool translation_unit_is_objc = (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus);
5832
5833                         if (translation_unit_is_objc)
5834                         {
5835                             if (type_name_cstr != NULL)
5836                             {
5837                                 static ConstString g_objc_type_name_id("id");
5838                                 static ConstString g_objc_type_name_Class("Class");
5839                                 static ConstString g_objc_type_name_selector("SEL");
5840
5841                                 if (type_name_const_str == g_objc_type_name_id)
5842                                 {
5843                                     if (log)
5844                                         GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'id' built-in type.",
5845                                                                                   die->GetOffset(),
5846                                                                                   DW_TAG_value_to_name(die->Tag()),
5847                                                                                   die->GetName(this, dwarf_cu));
5848                                     clang_type = ast.GetBasicType(eBasicTypeObjCID);
5849                                     encoding_data_type = Type::eEncodingIsUID;
5850                                     encoding_uid = LLDB_INVALID_UID;
5851                                     resolve_state = Type::eResolveStateFull;
5852
5853                                 }
5854                                 else if (type_name_const_str == g_objc_type_name_Class)
5855                                 {
5856                                     if (log)
5857                                         GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'Class' built-in type.",
5858                                                                                   die->GetOffset(),
5859                                                                                   DW_TAG_value_to_name(die->Tag()),
5860                                                                                   die->GetName(this, dwarf_cu));
5861                                     clang_type = ast.GetBasicType(eBasicTypeObjCClass);
5862                                     encoding_data_type = Type::eEncodingIsUID;
5863                                     encoding_uid = LLDB_INVALID_UID;
5864                                     resolve_state = Type::eResolveStateFull;
5865                                 }
5866                                 else if (type_name_const_str == g_objc_type_name_selector)
5867                                 {
5868                                     if (log)
5869                                         GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'selector' built-in type.",
5870                                                                                   die->GetOffset(),
5871                                                                                   DW_TAG_value_to_name(die->Tag()),
5872                                                                                   die->GetName(this, dwarf_cu));
5873                                     clang_type = ast.GetBasicType(eBasicTypeObjCSel);
5874                                     encoding_data_type = Type::eEncodingIsUID;
5875                                     encoding_uid = LLDB_INVALID_UID;
5876                                     resolve_state = Type::eResolveStateFull;
5877                                 }
5878                             }
5879                             else if (encoding_data_type == Type::eEncodingIsPointerUID && encoding_uid != LLDB_INVALID_UID)
5880                             {
5881                                 // Clang sometimes erroneously emits id as objc_object*.  In that case we fix up the type to "id".
5882
5883                                 DWARFDebugInfoEntry* encoding_die = dwarf_cu->GetDIEPtr(encoding_uid);
5884
5885                                 if (encoding_die && encoding_die->Tag() == DW_TAG_structure_type)
5886                                 {
5887                                     if (const char *struct_name = encoding_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL))
5888                                     {
5889                                         if (!strcmp(struct_name, "objc_object"))
5890                                         {
5891                                             if (log)
5892                                                 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is 'objc_object*', which we overrode to 'id'.",
5893                                                                                           die->GetOffset(),
5894                                                                                           DW_TAG_value_to_name(die->Tag()),
5895                                                                                           die->GetName(this, dwarf_cu));
5896                                             clang_type = ast.GetBasicType(eBasicTypeObjCID);
5897                                             encoding_data_type = Type::eEncodingIsUID;
5898                                             encoding_uid = LLDB_INVALID_UID;
5899                                             resolve_state = Type::eResolveStateFull;
5900                                         }
5901                                     }
5902                                 }
5903                             }
5904                         }
5905                     }
5906
5907                     type_sp.reset( new Type (MakeUserID(die->GetOffset()),
5908                                              this,
5909                                              type_name_const_str,
5910                                              byte_size,
5911                                              NULL,
5912                                              encoding_uid,
5913                                              encoding_data_type,
5914                                              &decl,
5915                                              clang_type,
5916                                              resolve_state));
5917
5918                     m_die_to_type[die] = type_sp.get();
5919
5920 //                  Type* encoding_type = GetUniquedTypeForDIEOffset(encoding_uid, type_sp, NULL, 0, 0, false);
5921 //                  if (encoding_type != NULL)
5922 //                  {
5923 //                      if (encoding_type != DIE_IS_BEING_PARSED)
5924 //                          type_sp->SetEncodingType(encoding_type);
5925 //                      else
5926 //                          m_indirect_fixups.push_back(type_sp.get());
5927 //                  }
5928                 }
5929                 break;
5930
5931             case DW_TAG_structure_type:
5932             case DW_TAG_union_type:
5933             case DW_TAG_class_type:
5934                 {
5935                     // Set a bit that lets us know that we are currently parsing this
5936                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
5937                     bool byte_size_valid = false;
5938
5939                     LanguageType class_language = eLanguageTypeUnknown;
5940                     bool is_complete_objc_class = false;
5941                     //bool struct_is_class = false;
5942                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
5943                     if (num_attributes > 0)
5944                     {
5945                         uint32_t i;
5946                         for (i=0; i<num_attributes; ++i)
5947                         {
5948                             attr = attributes.AttributeAtIndex(i);
5949                             DWARFFormValue form_value;
5950                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
5951                             {
5952                                 switch (attr)
5953                                 {
5954                                 case DW_AT_decl_file:
5955                                     if (dwarf_cu->DW_AT_decl_file_attributes_are_invalid())
5956                                     {
5957                                         // llvm-gcc outputs invalid DW_AT_decl_file attributes that always
5958                                         // point to the compile unit file, so we clear this invalid value
5959                                         // so that we can still unique types efficiently.
5960                                         decl.SetFile(FileSpec ("<invalid>", false));
5961                                     }
5962                                     else
5963                                         decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned()));
5964                                     break;
5965
5966                                 case DW_AT_decl_line:
5967                                     decl.SetLine(form_value.Unsigned());
5968                                     break;
5969
5970                                 case DW_AT_decl_column:
5971                                     decl.SetColumn(form_value.Unsigned());
5972                                     break;
5973
5974                                 case DW_AT_name:
5975                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
5976                                     type_name_const_str.SetCString(type_name_cstr);
5977                                     break;
5978
5979                                 case DW_AT_byte_size:
5980                                     byte_size = form_value.Unsigned();
5981                                     byte_size_valid = true;
5982                                     break;
5983
5984                                 case DW_AT_accessibility:
5985                                     accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
5986                                     break;
5987
5988                                 case DW_AT_declaration:
5989                                     is_forward_declaration = form_value.Boolean();
5990                                     break;
5991
5992                                 case DW_AT_APPLE_runtime_class:
5993                                     class_language = (LanguageType)form_value.Signed();
5994                                     break;
5995
5996                                 case DW_AT_APPLE_objc_complete_type:
5997                                     is_complete_objc_class = form_value.Signed();
5998                                     break;
5999
6000                                 case DW_AT_allocated:
6001                                 case DW_AT_associated:
6002                                 case DW_AT_data_location:
6003                                 case DW_AT_description:
6004                                 case DW_AT_start_scope:
6005                                 case DW_AT_visibility:
6006                                 default:
6007                                 case DW_AT_sibling:
6008                                     break;
6009                                 }
6010                             }
6011                         }
6012                     }
6013
6014                     UniqueDWARFASTType unique_ast_entry;
6015
6016                     // Only try and unique the type if it has a name.
6017                     if (type_name_const_str &&
6018                         GetUniqueDWARFASTTypeMap().Find (type_name_const_str,
6019                                                          this,
6020                                                          dwarf_cu,
6021                                                          die,
6022                                                          decl,
6023                                                          byte_size_valid ? byte_size : -1,
6024                                                          unique_ast_entry))
6025                     {
6026                         // We have already parsed this type or from another
6027                         // compile unit. GCC loves to use the "one definition
6028                         // rule" which can result in multiple definitions
6029                         // of the same class over and over in each compile
6030                         // unit.
6031                         type_sp = unique_ast_entry.m_type_sp;
6032                         if (type_sp)
6033                         {
6034                             m_die_to_type[die] = type_sp.get();
6035                             return type_sp;
6036                         }
6037                     }
6038
6039                     DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6040
6041                     int tag_decl_kind = -1;
6042                     AccessType default_accessibility = eAccessNone;
6043                     if (tag == DW_TAG_structure_type)
6044                     {
6045                         tag_decl_kind = clang::TTK_Struct;
6046                         default_accessibility = eAccessPublic;
6047                     }
6048                     else if (tag == DW_TAG_union_type)
6049                     {
6050                         tag_decl_kind = clang::TTK_Union;
6051                         default_accessibility = eAccessPublic;
6052                     }
6053                     else if (tag == DW_TAG_class_type)
6054                     {
6055                         tag_decl_kind = clang::TTK_Class;
6056                         default_accessibility = eAccessPrivate;
6057                     }
6058
6059                     if (byte_size_valid && byte_size == 0 && type_name_cstr &&
6060                         die->HasChildren() == false &&
6061                         sc.comp_unit->GetLanguage() == eLanguageTypeObjC)
6062                     {
6063                         // Work around an issue with clang at the moment where
6064                         // forward declarations for objective C classes are emitted
6065                         // as:
6066                         //  DW_TAG_structure_type [2]
6067                         //  DW_AT_name( "ForwardObjcClass" )
6068                         //  DW_AT_byte_size( 0x00 )
6069                         //  DW_AT_decl_file( "..." )
6070                         //  DW_AT_decl_line( 1 )
6071                         //
6072                         // Note that there is no DW_AT_declaration and there are
6073                         // no children, and the byte size is zero.
6074                         is_forward_declaration = true;
6075                     }
6076
6077                     if (class_language == eLanguageTypeObjC ||
6078                         class_language == eLanguageTypeObjC_plus_plus)
6079                     {
6080                         if (!is_complete_objc_class && Supports_DW_AT_APPLE_objc_complete_type(dwarf_cu))
6081                         {
6082                             // We have a valid eSymbolTypeObjCClass class symbol whose
6083                             // name matches the current objective C class that we
6084                             // are trying to find and this DIE isn't the complete
6085                             // definition (we checked is_complete_objc_class above and
6086                             // know it is false), so the real definition is in here somewhere
6087                             type_sp = FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true);
6088
6089                             if (!type_sp && GetDebugMapSymfile ())
6090                             {
6091                                 // We weren't able to find a full declaration in
6092                                 // this DWARF, see if we have a declaration anywhere
6093                                 // else...
6094                                 type_sp = m_debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true);
6095                             }
6096
6097                             if (type_sp)
6098                             {
6099                                 if (log)
6100                                 {
6101                                     GetObjectFile()->GetModule()->LogMessage (log,
6102                                                                               "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an incomplete objc type, complete type is 0x%8.8" PRIx64,
6103                                                                               this,
6104                                                                               die->GetOffset(),
6105                                                                               DW_TAG_value_to_name(tag),
6106                                                                               type_name_cstr,
6107                                                                               type_sp->GetID());
6108                                 }
6109
6110                                 // We found a real definition for this type elsewhere
6111                                 // so lets use it and cache the fact that we found
6112                                 // a complete type for this die
6113                                 m_die_to_type[die] = type_sp.get();
6114                                 return type_sp;
6115                             }
6116                         }
6117                     }
6118
6119
6120                     if (is_forward_declaration)
6121                     {
6122                         // We have a forward declaration to a type and we need
6123                         // to try and find a full declaration. We look in the
6124                         // current type index just in case we have a forward
6125                         // declaration followed by an actual declarations in the
6126                         // DWARF. If this fails, we need to look elsewhere...
6127                         if (log)
6128                         {
6129                             GetObjectFile()->GetModule()->LogMessage (log,
6130                                                                       "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, trying to find complete type",
6131                                                                       this,
6132                                                                       die->GetOffset(),
6133                                                                       DW_TAG_value_to_name(tag),
6134                                                                       type_name_cstr);
6135                         }
6136
6137                         DWARFDeclContext die_decl_ctx;
6138                         die->GetDWARFDeclContext(this, dwarf_cu, die_decl_ctx);
6139
6140                         //type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str);
6141                         type_sp = FindDefinitionTypeForDWARFDeclContext (die_decl_ctx);
6142
6143                         if (!type_sp && GetDebugMapSymfile ())
6144                         {
6145                             // We weren't able to find a full declaration in
6146                             // this DWARF, see if we have a declaration anywhere
6147                             // else...
6148                             type_sp = m_debug_map_symfile->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx);
6149                         }
6150
6151                         if (type_sp)
6152                         {
6153                             if (log)
6154                             {
6155                                 GetObjectFile()->GetModule()->LogMessage (log,
6156                                                                           "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, complete type is 0x%8.8" PRIx64,
6157                                                                           this,
6158                                                                           die->GetOffset(),
6159                                                                           DW_TAG_value_to_name(tag),
6160                                                                           type_name_cstr,
6161                                                                           type_sp->GetID());
6162                             }
6163
6164                             // We found a real definition for this type elsewhere
6165                             // so lets use it and cache the fact that we found
6166                             // a complete type for this die
6167                             m_die_to_type[die] = type_sp.get();
6168                             return type_sp;
6169                         }
6170                     }
6171                     assert (tag_decl_kind != -1);
6172                     bool clang_type_was_created = false;
6173                     clang_type.SetClangType(ast.getASTContext(), m_forward_decl_die_to_clang_type.lookup (die));
6174                     if (!clang_type)
6175                     {
6176                         const DWARFDebugInfoEntry *decl_ctx_die;
6177
6178                         clang::DeclContext *decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die);
6179                         if (accessibility == eAccessNone && decl_ctx)
6180                         {
6181                             // Check the decl context that contains this class/struct/union.
6182                             // If it is a class we must give it an accessability.
6183                             const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind();
6184                             if (DeclKindIsCXXClass (containing_decl_kind))
6185                                 accessibility = default_accessibility;
6186                         }
6187
6188                         ClangASTMetadata metadata;
6189                         metadata.SetUserID(MakeUserID(die->GetOffset()));
6190                         metadata.SetIsDynamicCXXType(ClassOrStructIsVirtual (dwarf_cu, die));
6191
6192                         if (type_name_cstr && strchr (type_name_cstr, '<'))
6193                         {
6194                             ClangASTContext::TemplateParameterInfos template_param_infos;
6195                             if (ParseTemplateParameterInfos (dwarf_cu, die, template_param_infos))
6196                             {
6197                                 clang::ClassTemplateDecl *class_template_decl = ParseClassTemplateDecl (decl_ctx,
6198                                                                                                         accessibility,
6199                                                                                                         type_name_cstr,
6200                                                                                                         tag_decl_kind,
6201                                                                                                         template_param_infos);
6202
6203                                 clang::ClassTemplateSpecializationDecl *class_specialization_decl = ast.CreateClassTemplateSpecializationDecl (decl_ctx,
6204                                                                                                                                                class_template_decl,
6205                                                                                                                                                tag_decl_kind,
6206                                                                                                                                                template_param_infos);
6207                                 clang_type = ast.CreateClassTemplateSpecializationType (class_specialization_decl);
6208                                 clang_type_was_created = true;
6209
6210                                 GetClangASTContext().SetMetadata (class_template_decl, metadata);
6211                                 GetClangASTContext().SetMetadata (class_specialization_decl, metadata);
6212                             }
6213                         }
6214
6215                         if (!clang_type_was_created)
6216                         {
6217                             clang_type_was_created = true;
6218                             clang_type = ast.CreateRecordType (decl_ctx,
6219                                                                accessibility,
6220                                                                type_name_cstr,
6221                                                                tag_decl_kind,
6222                                                                class_language,
6223                                                                &metadata);
6224                         }
6225                     }
6226
6227                     // Store a forward declaration to this class type in case any
6228                     // parameters in any class methods need it for the clang
6229                     // types for function prototypes.
6230                     LinkDeclContextToDIE(clang_type.GetDeclContextForType(), die);
6231                     type_sp.reset (new Type (MakeUserID(die->GetOffset()),
6232                                              this,
6233                                              type_name_const_str,
6234                                              byte_size,
6235                                              NULL,
6236                                              LLDB_INVALID_UID,
6237                                              Type::eEncodingIsUID,
6238                                              &decl,
6239                                              clang_type,
6240                                              Type::eResolveStateForward));
6241
6242                     type_sp->SetIsCompleteObjCClass(is_complete_objc_class);
6243
6244
6245                     // Add our type to the unique type map so we don't
6246                     // end up creating many copies of the same type over
6247                     // and over in the ASTContext for our module
6248                     unique_ast_entry.m_type_sp = type_sp;
6249                     unique_ast_entry.m_symfile = this;
6250                     unique_ast_entry.m_cu = dwarf_cu;
6251                     unique_ast_entry.m_die = die;
6252                     unique_ast_entry.m_declaration = decl;
6253                     unique_ast_entry.m_byte_size = byte_size;
6254                     GetUniqueDWARFASTTypeMap().Insert (type_name_const_str,
6255                                                        unique_ast_entry);
6256
6257                     if (is_forward_declaration && die->HasChildren())
6258                     {
6259                         // Check to see if the DIE actually has a definition, some version of GCC will
6260                         // emit DIEs with DW_AT_declaration set to true, but yet still have subprogram,
6261                         // members, or inheritance, so we can't trust it
6262                         const DWARFDebugInfoEntry *child_die = die->GetFirstChild();
6263                         while (child_die)
6264                         {
6265                             switch (child_die->Tag())
6266                             {
6267                                 case DW_TAG_inheritance:
6268                                 case DW_TAG_subprogram:
6269                                 case DW_TAG_member:
6270                                 case DW_TAG_APPLE_property:
6271                                 case DW_TAG_class_type:
6272                                 case DW_TAG_structure_type:
6273                                 case DW_TAG_enumeration_type:
6274                                 case DW_TAG_typedef:
6275                                 case DW_TAG_union_type:
6276                                     child_die = NULL;
6277                                     is_forward_declaration = false;
6278                                     break;
6279                                 default:
6280                                     child_die = child_die->GetSibling();
6281                                     break;
6282                             }
6283                         }
6284                     }
6285
6286                     if (!is_forward_declaration)
6287                     {
6288                         // Always start the definition for a class type so that
6289                         // if the class has child classes or types that require
6290                         // the class to be created for use as their decl contexts
6291                         // the class will be ready to accept these child definitions.
6292                         if (die->HasChildren() == false)
6293                         {
6294                             // No children for this struct/union/class, lets finish it
6295                             clang_type.StartTagDeclarationDefinition ();
6296                             clang_type.CompleteTagDeclarationDefinition ();
6297
6298                             if (tag == DW_TAG_structure_type) // this only applies in C
6299                             {
6300                                 clang::RecordDecl *record_decl = clang_type.GetAsRecordDecl();
6301
6302                                 if (record_decl)
6303                                 {
6304                                     LayoutInfo layout_info;
6305
6306                                     layout_info.alignment = 0;
6307                                     layout_info.bit_size = 0;
6308
6309                                     m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info));
6310                                 }
6311                             }
6312                         }
6313                         else if (clang_type_was_created)
6314                         {
6315                             // Start the definition if the class is not objective C since
6316                             // the underlying decls respond to isCompleteDefinition(). Objective
6317                             // C decls dont' respond to isCompleteDefinition() so we can't
6318                             // start the declaration definition right away. For C++ classs/union/structs
6319                             // we want to start the definition in case the class is needed as the
6320                             // declaration context for a contained class or type without the need
6321                             // to complete that type..
6322
6323                             if (class_language != eLanguageTypeObjC &&
6324                                 class_language != eLanguageTypeObjC_plus_plus)
6325                                 clang_type.StartTagDeclarationDefinition ();
6326
6327                             // Leave this as a forward declaration until we need
6328                             // to know the details of the type. lldb_private::Type
6329                             // will automatically call the SymbolFile virtual function
6330                             // "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition(Type *)"
6331                             // When the definition needs to be defined.
6332                             m_forward_decl_die_to_clang_type[die] = clang_type.GetOpaqueQualType();
6333                             m_forward_decl_clang_type_to_die[clang_type.RemoveFastQualifiers().GetOpaqueQualType()] = die;
6334                             clang_type.SetHasExternalStorage (true);
6335                         }
6336                     }
6337
6338                 }
6339                 break;
6340
6341             case DW_TAG_enumeration_type:
6342                 {
6343                     // Set a bit that lets us know that we are currently parsing this
6344                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
6345
6346                     lldb::user_id_t encoding_uid = DW_INVALID_OFFSET;
6347
6348                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
6349                     if (num_attributes > 0)
6350                     {
6351                         uint32_t i;
6352
6353                         for (i=0; i<num_attributes; ++i)
6354                         {
6355                             attr = attributes.AttributeAtIndex(i);
6356                             DWARFFormValue form_value;
6357                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6358                             {
6359                                 switch (attr)
6360                                 {
6361                                 case DW_AT_decl_file:       decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6362                                 case DW_AT_decl_line:       decl.SetLine(form_value.Unsigned()); break;
6363                                 case DW_AT_decl_column:     decl.SetColumn(form_value.Unsigned()); break;
6364                                 case DW_AT_name:
6365                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
6366                                     type_name_const_str.SetCString(type_name_cstr);
6367                                     break;
6368                                 case DW_AT_type:            encoding_uid = form_value.Reference(dwarf_cu); break;
6369                                 case DW_AT_byte_size:       byte_size = form_value.Unsigned(); break;
6370                                 case DW_AT_accessibility:   break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6371                                 case DW_AT_declaration:     break; //is_forward_declaration = form_value.Boolean(); break;
6372                                 case DW_AT_allocated:
6373                                 case DW_AT_associated:
6374                                 case DW_AT_bit_stride:
6375                                 case DW_AT_byte_stride:
6376                                 case DW_AT_data_location:
6377                                 case DW_AT_description:
6378                                 case DW_AT_start_scope:
6379                                 case DW_AT_visibility:
6380                                 case DW_AT_specification:
6381                                 case DW_AT_abstract_origin:
6382                                 case DW_AT_sibling:
6383                                     break;
6384                                 }
6385                             }
6386                         }
6387
6388                         DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6389
6390                         ClangASTType enumerator_clang_type;
6391                         clang_type.SetClangType (ast.getASTContext(), m_forward_decl_die_to_clang_type.lookup (die));
6392                         if (!clang_type)
6393                         {
6394                             if (encoding_uid != DW_INVALID_OFFSET)
6395                             {
6396                                 Type *enumerator_type = ResolveTypeUID(encoding_uid);
6397                                 if (enumerator_type)
6398                                     enumerator_clang_type = enumerator_type->GetClangFullType();
6399                             }
6400
6401                             if (!enumerator_clang_type)
6402                                 enumerator_clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (NULL,
6403                                                                                                       DW_ATE_signed,
6404                                                                                                       byte_size * 8);
6405
6406                             clang_type = ast.CreateEnumerationType (type_name_cstr,
6407                                                                     GetClangDeclContextContainingDIE (dwarf_cu, die, NULL),
6408                                                                     decl,
6409                                                                     enumerator_clang_type);
6410                         }
6411                         else
6412                         {
6413                             enumerator_clang_type = clang_type.GetEnumerationIntegerType ();
6414                         }
6415
6416                         LinkDeclContextToDIE(clang_type.GetDeclContextForType(), die);
6417
6418                         type_sp.reset( new Type (MakeUserID(die->GetOffset()),
6419                                                  this,
6420                                                  type_name_const_str,
6421                                                  byte_size,
6422                                                  NULL,
6423                                                  encoding_uid,
6424                                                  Type::eEncodingIsUID,
6425                                                  &decl,
6426                                                  clang_type,
6427                                                  Type::eResolveStateForward));
6428
6429                         clang_type.StartTagDeclarationDefinition ();
6430                         if (die->HasChildren())
6431                         {
6432                             SymbolContext cu_sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
6433                             bool is_signed = false;
6434                             enumerator_clang_type.IsIntegerType(is_signed);
6435                             ParseChildEnumerators(cu_sc, clang_type, is_signed, type_sp->GetByteSize(), dwarf_cu, die);
6436                         }
6437                         clang_type.CompleteTagDeclarationDefinition ();
6438                     }
6439                 }
6440                 break;
6441
6442             case DW_TAG_inlined_subroutine:
6443             case DW_TAG_subprogram:
6444             case DW_TAG_subroutine_type:
6445                 {
6446                     // Set a bit that lets us know that we are currently parsing this
6447                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
6448
6449                     //const char *mangled = NULL;
6450                     dw_offset_t type_die_offset = DW_INVALID_OFFSET;
6451                     bool is_variadic = false;
6452                     bool is_inline = false;
6453                     bool is_static = false;
6454                     bool is_virtual = false;
6455                     bool is_explicit = false;
6456                     bool is_artificial = false;
6457                     dw_offset_t specification_die_offset = DW_INVALID_OFFSET;
6458                     dw_offset_t abstract_origin_die_offset = DW_INVALID_OFFSET;
6459                     dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET;
6460
6461                     unsigned type_quals = 0;
6462                     clang::StorageClass storage = clang::SC_None;//, Extern, Static, PrivateExtern
6463
6464
6465                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
6466                     if (num_attributes > 0)
6467                     {
6468                         uint32_t i;
6469                         for (i=0; i<num_attributes; ++i)
6470                         {
6471                             attr = attributes.AttributeAtIndex(i);
6472                             DWARFFormValue form_value;
6473                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6474                             {
6475                                 switch (attr)
6476                                 {
6477                                 case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6478                                 case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
6479                                 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
6480                                 case DW_AT_name:
6481                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
6482                                     type_name_const_str.SetCString(type_name_cstr);
6483                                     break;
6484
6485                                 case DW_AT_linkage_name:
6486                                 case DW_AT_MIPS_linkage_name:   break; // mangled = form_value.AsCString(&get_debug_str_data()); break;
6487                                 case DW_AT_type:                type_die_offset = form_value.Reference(dwarf_cu); break;
6488                                 case DW_AT_accessibility:       accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6489                                 case DW_AT_declaration:         break; // is_forward_declaration = form_value.Boolean(); break;
6490                                 case DW_AT_inline:              is_inline = form_value.Boolean(); break;
6491                                 case DW_AT_virtuality:          is_virtual = form_value.Boolean();  break;
6492                                 case DW_AT_explicit:            is_explicit = form_value.Boolean();  break;
6493                                 case DW_AT_artificial:          is_artificial = form_value.Boolean();  break;
6494
6495
6496                                 case DW_AT_external:
6497                                     if (form_value.Unsigned())
6498                                     {
6499                                         if (storage == clang::SC_None)
6500                                             storage = clang::SC_Extern;
6501                                         else
6502                                             storage = clang::SC_PrivateExtern;
6503                                     }
6504                                     break;
6505
6506                                 case DW_AT_specification:
6507                                     specification_die_offset = form_value.Reference(dwarf_cu);
6508                                     break;
6509
6510                                 case DW_AT_abstract_origin:
6511                                     abstract_origin_die_offset = form_value.Reference(dwarf_cu);
6512                                     break;
6513
6514                                 case DW_AT_object_pointer:
6515                                     object_pointer_die_offset = form_value.Reference(dwarf_cu);
6516                                     break;
6517
6518                                 case DW_AT_allocated:
6519                                 case DW_AT_associated:
6520                                 case DW_AT_address_class:
6521                                 case DW_AT_calling_convention:
6522                                 case DW_AT_data_location:
6523                                 case DW_AT_elemental:
6524                                 case DW_AT_entry_pc:
6525                                 case DW_AT_frame_base:
6526                                 case DW_AT_high_pc:
6527                                 case DW_AT_low_pc:
6528                                 case DW_AT_prototyped:
6529                                 case DW_AT_pure:
6530                                 case DW_AT_ranges:
6531                                 case DW_AT_recursive:
6532                                 case DW_AT_return_addr:
6533                                 case DW_AT_segment:
6534                                 case DW_AT_start_scope:
6535                                 case DW_AT_static_link:
6536                                 case DW_AT_trampoline:
6537                                 case DW_AT_visibility:
6538                                 case DW_AT_vtable_elem_location:
6539                                 case DW_AT_description:
6540                                 case DW_AT_sibling:
6541                                     break;
6542                                 }
6543                             }
6544                         }
6545                     }
6546
6547                     std::string object_pointer_name;
6548                     if (object_pointer_die_offset != DW_INVALID_OFFSET)
6549                     {
6550                         // Get the name from the object pointer die
6551                         StreamString s;
6552                         if (DWARFDebugInfoEntry::GetName (this, dwarf_cu, object_pointer_die_offset, s))
6553                         {
6554                             object_pointer_name.assign(s.GetData());
6555                         }
6556                     }
6557
6558                     DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6559
6560                     ClangASTType return_clang_type;
6561                     Type *func_type = NULL;
6562
6563                     if (type_die_offset != DW_INVALID_OFFSET)
6564                         func_type = ResolveTypeUID(type_die_offset);
6565
6566                     if (func_type)
6567                         return_clang_type = func_type->GetClangForwardType();
6568                     else
6569                         return_clang_type = ast.GetBasicType(eBasicTypeVoid);
6570
6571
6572                     std::vector<ClangASTType> function_param_types;
6573                     std::vector<clang::ParmVarDecl*> function_param_decls;
6574
6575                     // Parse the function children for the parameters
6576
6577                     const DWARFDebugInfoEntry *decl_ctx_die = NULL;
6578                     clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die);
6579                     const clang::Decl::Kind containing_decl_kind = containing_decl_ctx->getDeclKind();
6580
6581                     const bool is_cxx_method = DeclKindIsCXXClass (containing_decl_kind);
6582                     // Start off static. This will be set to false in ParseChildParameters(...)
6583                     // if we find a "this" paramters as the first parameter
6584                     if (is_cxx_method)
6585                         is_static = true;
6586                     ClangASTContext::TemplateParameterInfos template_param_infos;
6587
6588                     if (die->HasChildren())
6589                     {
6590                         bool skip_artificial = true;
6591                         ParseChildParameters (sc,
6592                                               containing_decl_ctx,
6593                                               dwarf_cu,
6594                                               die,
6595                                               skip_artificial,
6596                                               is_static,
6597                                               is_variadic,
6598                                               type_list,
6599                                               function_param_types,
6600                                               function_param_decls,
6601                                               type_quals,
6602                                               template_param_infos);
6603                     }
6604
6605                     // clang_type will get the function prototype clang type after this call
6606                     clang_type = ast.CreateFunctionType (return_clang_type,
6607                                                          function_param_types.data(),
6608                                                          function_param_types.size(),
6609                                                          is_variadic,
6610                                                          type_quals);
6611
6612                     bool ignore_containing_context = false;
6613
6614                     if (type_name_cstr)
6615                     {
6616                         bool type_handled = false;
6617                         if (tag == DW_TAG_subprogram)
6618                         {
6619                             ObjCLanguageRuntime::MethodName objc_method (type_name_cstr, true);
6620                             if (objc_method.IsValid(true))
6621                             {
6622                                 SymbolContext empty_sc;
6623                                 ClangASTType class_opaque_type;
6624                                 ConstString class_name(objc_method.GetClassName());
6625                                 if (class_name)
6626                                 {
6627                                     TypeList types;
6628                                     TypeSP complete_objc_class_type_sp (FindCompleteObjCDefinitionTypeForDIE (NULL, class_name, false));
6629
6630                                     if (complete_objc_class_type_sp)
6631                                     {
6632                                         ClangASTType type_clang_forward_type = complete_objc_class_type_sp->GetClangForwardType();
6633                                         if (type_clang_forward_type.IsObjCObjectOrInterfaceType ())
6634                                             class_opaque_type = type_clang_forward_type;
6635                                     }
6636                                 }
6637
6638                                 if (class_opaque_type)
6639                                 {
6640                                     // If accessibility isn't set to anything valid, assume public for
6641                                     // now...
6642                                     if (accessibility == eAccessNone)
6643                                         accessibility = eAccessPublic;
6644
6645                                     clang::ObjCMethodDecl *objc_method_decl = class_opaque_type.AddMethodToObjCObjectType (type_name_cstr,
6646                                                                                                                            clang_type,
6647                                                                                                                            accessibility,
6648                                                                                                                            is_artificial);
6649                                     type_handled = objc_method_decl != NULL;
6650                                     if (type_handled)
6651                                     {
6652                                         LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(objc_method_decl), die);
6653                                         GetClangASTContext().SetMetadataAsUserID (objc_method_decl, MakeUserID(die->GetOffset()));
6654                                     }
6655                                     else
6656                                     {
6657                                         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",
6658                                                                                    die->GetOffset(),
6659                                                                                    tag,
6660                                                                                    DW_TAG_value_to_name(tag));
6661                                     }
6662                                 }
6663                             }
6664                             else if (is_cxx_method)
6665                             {
6666                                 // Look at the parent of this DIE and see if is is
6667                                 // a class or struct and see if this is actually a
6668                                 // C++ method
6669                                 Type *class_type = ResolveType (dwarf_cu, decl_ctx_die);
6670                                 if (class_type)
6671                                 {
6672                                     if (class_type->GetID() != MakeUserID(decl_ctx_die->GetOffset()))
6673                                     {
6674                                         // We uniqued the parent class of this function to another class
6675                                         // so we now need to associate all dies under "decl_ctx_die" to
6676                                         // DIEs in the DIE for "class_type"...
6677                                         SymbolFileDWARF *class_symfile = NULL;
6678                                         DWARFCompileUnitSP class_type_cu_sp;
6679                                         const DWARFDebugInfoEntry *class_type_die = NULL;
6680
6681                                         SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile();
6682                                         if (debug_map_symfile)
6683                                         {
6684                                             class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex(SymbolFileDWARFDebugMap::GetOSOIndexFromUserID(class_type->GetID()));
6685                                             class_type_die = class_symfile->DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp);
6686                                         }
6687                                         else
6688                                         {
6689                                             class_symfile = this;
6690                                             class_type_die = DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp);
6691                                         }
6692                                         if (class_type_die)
6693                                         {
6694                                             llvm::SmallVector<const DWARFDebugInfoEntry *, 0> failures;
6695
6696                                             CopyUniqueClassMethodTypes (class_symfile,
6697                                                                         class_type,
6698                                                                         class_type_cu_sp.get(),
6699                                                                         class_type_die,
6700                                                                         dwarf_cu,
6701                                                                         decl_ctx_die,
6702                                                                         failures);
6703
6704                                             // FIXME do something with these failures that's smarter than
6705                                             // just dropping them on the ground.  Unfortunately classes don't
6706                                             // like having stuff added to them after their definitions are
6707                                             // complete...
6708
6709                                             type_ptr = m_die_to_type[die];
6710                                             if (type_ptr && type_ptr != DIE_IS_BEING_PARSED)
6711                                             {
6712                                                 type_sp = type_ptr->shared_from_this();
6713                                                 break;
6714                                             }
6715                                         }
6716                                     }
6717
6718                                     if (specification_die_offset != DW_INVALID_OFFSET)
6719                                     {
6720                                         // We have a specification which we are going to base our function
6721                                         // prototype off of, so we need this type to be completed so that the
6722                                         // m_die_to_decl_ctx for the method in the specification has a valid
6723                                         // clang decl context.
6724                                         class_type->GetClangForwardType();
6725                                         // If we have a specification, then the function type should have been
6726                                         // made with the specification and not with this die.
6727                                         DWARFCompileUnitSP spec_cu_sp;
6728                                         const DWARFDebugInfoEntry* spec_die = DebugInfo()->GetDIEPtr(specification_die_offset, &spec_cu_sp);
6729                                         clang::DeclContext *spec_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, spec_die);
6730                                         if (spec_clang_decl_ctx)
6731                                         {
6732                                             LinkDeclContextToDIE(spec_clang_decl_ctx, die);
6733                                         }
6734                                         else
6735                                         {
6736                                             GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_specification(0x%8.8x) has no decl\n",
6737                                                                                          MakeUserID(die->GetOffset()),
6738                                                                                          specification_die_offset);
6739                                         }
6740                                         type_handled = true;
6741                                     }
6742                                     else if (abstract_origin_die_offset != DW_INVALID_OFFSET)
6743                                     {
6744                                         // We have a specification which we are going to base our function
6745                                         // prototype off of, so we need this type to be completed so that the
6746                                         // m_die_to_decl_ctx for the method in the abstract origin has a valid
6747                                         // clang decl context.
6748                                         class_type->GetClangForwardType();
6749
6750                                         DWARFCompileUnitSP abs_cu_sp;
6751                                         const DWARFDebugInfoEntry* abs_die = DebugInfo()->GetDIEPtr(abstract_origin_die_offset, &abs_cu_sp);
6752                                         clang::DeclContext *abs_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, abs_die);
6753                                         if (abs_clang_decl_ctx)
6754                                         {
6755                                             LinkDeclContextToDIE (abs_clang_decl_ctx, die);
6756                                         }
6757                                         else
6758                                         {
6759                                             GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_abstract_origin(0x%8.8x) has no decl\n",
6760                                                                                          MakeUserID(die->GetOffset()),
6761                                                                                          abstract_origin_die_offset);
6762                                         }
6763                                         type_handled = true;
6764                                     }
6765                                     else
6766                                     {
6767                                         ClangASTType class_opaque_type = class_type->GetClangForwardType();
6768                                         if (class_opaque_type.IsCXXClassType ())
6769                                         {
6770                                             if (class_opaque_type.IsBeingDefined ())
6771                                             {
6772                                                 // Neither GCC 4.2 nor clang++ currently set a valid accessibility
6773                                                 // in the DWARF for C++ methods... Default to public for now...
6774                                                 if (accessibility == eAccessNone)
6775                                                     accessibility = eAccessPublic;
6776
6777                                                 if (!is_static && !die->HasChildren())
6778                                                 {
6779                                                     // We have a C++ member function with no children (this pointer!)
6780                                                     // and clang will get mad if we try and make a function that isn't
6781                                                     // well formed in the DWARF, so we will just skip it...
6782                                                     type_handled = true;
6783                                                 }
6784                                                 else
6785                                                 {
6786                                                     clang::CXXMethodDecl *cxx_method_decl;
6787                                                     // REMOVE THE CRASH DESCRIPTION BELOW
6788                                                     Host::SetCrashDescriptionWithFormat ("SymbolFileDWARF::ParseType() is adding a method %s to class %s in DIE 0x%8.8" PRIx64 " from %s",
6789                                                                                          type_name_cstr,
6790                                                                                          class_type->GetName().GetCString(),
6791                                                                                          MakeUserID(die->GetOffset()),
6792                                                                                          m_obj_file->GetFileSpec().GetPath().c_str());
6793
6794                                                     const bool is_attr_used = false;
6795
6796                                                     cxx_method_decl = class_opaque_type.AddMethodToCXXRecordType (type_name_cstr,
6797                                                                                                                   clang_type,
6798                                                                                                                   accessibility,
6799                                                                                                                   is_virtual,
6800                                                                                                                   is_static,
6801                                                                                                                   is_inline,
6802                                                                                                                   is_explicit,
6803                                                                                                                   is_attr_used,
6804                                                                                                                   is_artificial);
6805
6806                                                     type_handled = cxx_method_decl != NULL;
6807
6808                                                     if (type_handled)
6809                                                     {
6810                                                         LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(cxx_method_decl), die);
6811
6812                                                         Host::SetCrashDescription (NULL);
6813
6814
6815                                                         ClangASTMetadata metadata;
6816                                                         metadata.SetUserID(MakeUserID(die->GetOffset()));
6817
6818                                                         if (!object_pointer_name.empty())
6819                                                         {
6820                                                             metadata.SetObjectPtrName(object_pointer_name.c_str());
6821                                                             if (log)
6822                                                                 log->Printf ("Setting object pointer name: %s on method object %p.\n",
6823                                                                              object_pointer_name.c_str(),
6824                                                                              cxx_method_decl);
6825                                                         }
6826                                                         GetClangASTContext().SetMetadata (cxx_method_decl, metadata);
6827                                                     }
6828                                                     else
6829                                                     {
6830                                                         ignore_containing_context = true;
6831                                                     }
6832                                                 }
6833                                             }
6834                                             else
6835                                             {
6836                                                 // We were asked to parse the type for a method in a class, yet the
6837                                                 // class hasn't been asked to complete itself through the
6838                                                 // clang::ExternalASTSource protocol, so we need to just have the
6839                                                 // class complete itself and do things the right way, then our
6840                                                 // DIE should then have an entry in the m_die_to_type map. First
6841                                                 // we need to modify the m_die_to_type so it doesn't think we are
6842                                                 // trying to parse this DIE anymore...
6843                                                 m_die_to_type[die] = NULL;
6844
6845                                                 // Now we get the full type to force our class type to complete itself
6846                                                 // using the clang::ExternalASTSource protocol which will parse all
6847                                                 // base classes and all methods (including the method for this DIE).
6848                                                 class_type->GetClangFullType();
6849
6850                                                 // The type for this DIE should have been filled in the function call above
6851                                                 type_ptr = m_die_to_type[die];
6852                                                 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED)
6853                                                 {
6854                                                     type_sp = type_ptr->shared_from_this();
6855                                                     break;
6856                                                 }
6857
6858                                                 // FIXME This is fixing some even uglier behavior but we really need to
6859                                                 // uniq the methods of each class as well as the class itself.
6860                                                 // <rdar://problem/11240464>
6861                                                 type_handled = true;
6862                                             }
6863                                         }
6864                                     }
6865                                 }
6866                             }
6867                         }
6868
6869                         if (!type_handled)
6870                         {
6871                             // We just have a function that isn't part of a class
6872                             clang::FunctionDecl *function_decl = ast.CreateFunctionDeclaration (ignore_containing_context ? GetClangASTContext().GetTranslationUnitDecl() : containing_decl_ctx,
6873                                                                                                 type_name_cstr,
6874                                                                                                 clang_type,
6875                                                                                                 storage,
6876                                                                                                 is_inline);
6877
6878 //                            if (template_param_infos.GetSize() > 0)
6879 //                            {
6880 //                                clang::FunctionTemplateDecl *func_template_decl = ast.CreateFunctionTemplateDecl (containing_decl_ctx,
6881 //                                                                                                                  function_decl,
6882 //                                                                                                                  type_name_cstr,
6883 //                                                                                                                  template_param_infos);
6884 //
6885 //                                ast.CreateFunctionTemplateSpecializationInfo (function_decl,
6886 //                                                                              func_template_decl,
6887 //                                                                              template_param_infos);
6888 //                            }
6889                             // Add the decl to our DIE to decl context map
6890                             assert (function_decl);
6891                             LinkDeclContextToDIE(function_decl, die);
6892                             if (!function_param_decls.empty())
6893                                 ast.SetFunctionParameters (function_decl,
6894                                                            &function_param_decls.front(),
6895                                                            function_param_decls.size());
6896
6897                             ClangASTMetadata metadata;
6898                             metadata.SetUserID(MakeUserID(die->GetOffset()));
6899
6900                             if (!object_pointer_name.empty())
6901                             {
6902                                 metadata.SetObjectPtrName(object_pointer_name.c_str());
6903                                 if (log)
6904                                     log->Printf ("Setting object pointer name: %s on function object %p.",
6905                                                  object_pointer_name.c_str(),
6906                                                 function_decl);
6907                             }
6908                             GetClangASTContext().SetMetadata (function_decl, metadata);
6909                         }
6910                     }
6911                     type_sp.reset( new Type (MakeUserID(die->GetOffset()),
6912                                              this,
6913                                              type_name_const_str,
6914                                              0,
6915                                              NULL,
6916                                              LLDB_INVALID_UID,
6917                                              Type::eEncodingIsUID,
6918                                              &decl,
6919                                              clang_type,
6920                                              Type::eResolveStateFull));
6921                     assert(type_sp.get());
6922                 }
6923                 break;
6924
6925             case DW_TAG_array_type:
6926                 {
6927                     // Set a bit that lets us know that we are currently parsing this
6928                     m_die_to_type[die] = DIE_IS_BEING_PARSED;
6929
6930                     lldb::user_id_t type_die_offset = DW_INVALID_OFFSET;
6931                     int64_t first_index = 0;
6932                     uint32_t byte_stride = 0;
6933                     uint32_t bit_stride = 0;
6934                     bool is_vector = false;
6935                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
6936
6937                     if (num_attributes > 0)
6938                     {
6939                         uint32_t i;
6940                         for (i=0; i<num_attributes; ++i)
6941                         {
6942                             attr = attributes.AttributeAtIndex(i);
6943                             DWARFFormValue form_value;
6944                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6945                             {
6946                                 switch (attr)
6947                                 {
6948                                 case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6949                                 case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
6950                                 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
6951                                 case DW_AT_name:
6952                                     type_name_cstr = form_value.AsCString(&get_debug_str_data());
6953                                     type_name_const_str.SetCString(type_name_cstr);
6954                                     break;
6955
6956                                 case DW_AT_type:            type_die_offset = form_value.Reference(dwarf_cu); break;
6957                                 case DW_AT_byte_size:       break; // byte_size = form_value.Unsigned(); break;
6958                                 case DW_AT_byte_stride:     byte_stride = form_value.Unsigned(); break;
6959                                 case DW_AT_bit_stride:      bit_stride = form_value.Unsigned(); break;
6960                                 case DW_AT_GNU_vector:      is_vector = form_value.Boolean(); break;
6961                                 case DW_AT_accessibility:   break; // accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6962                                 case DW_AT_declaration:     break; // is_forward_declaration = form_value.Boolean(); break;
6963                                 case DW_AT_allocated:
6964                                 case DW_AT_associated:
6965                                 case DW_AT_data_location:
6966                                 case DW_AT_description:
6967                                 case DW_AT_ordering:
6968                                 case DW_AT_start_scope:
6969                                 case DW_AT_visibility:
6970                                 case DW_AT_specification:
6971                                 case DW_AT_abstract_origin:
6972                                 case DW_AT_sibling:
6973                                     break;
6974                                 }
6975                             }
6976                         }
6977
6978                         DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6979
6980                         Type *element_type = ResolveTypeUID(type_die_offset);
6981
6982                         if (element_type)
6983                         {
6984                             std::vector<uint64_t> element_orders;
6985                             ParseChildArrayInfo(sc, dwarf_cu, die, first_index, element_orders, byte_stride, bit_stride);
6986                             if (byte_stride == 0 && bit_stride == 0)
6987                                 byte_stride = element_type->GetByteSize();
6988                             ClangASTType array_element_type = element_type->GetClangForwardType();
6989                             uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride;
6990                             uint64_t num_elements = 0;
6991                             std::vector<uint64_t>::const_reverse_iterator pos;
6992                             std::vector<uint64_t>::const_reverse_iterator end = element_orders.rend();
6993                             for (pos = element_orders.rbegin(); pos != end; ++pos)
6994                             {
6995                                 num_elements = *pos;
6996                                 clang_type = ast.CreateArrayType (array_element_type,
6997                                                                   num_elements,
6998                                                                   is_vector);
6999                                 array_element_type = clang_type;
7000                                 array_element_bit_stride = num_elements ? array_element_bit_stride * num_elements : array_element_bit_stride;
7001                             }
7002                             ConstString empty_name;
7003                             type_sp.reset( new Type (MakeUserID(die->GetOffset()),
7004                                                      this,
7005                                                      empty_name,
7006                                                      array_element_bit_stride / 8,
7007                                                      NULL,
7008                                                      type_die_offset,
7009                                                      Type::eEncodingIsUID,
7010                                                      &decl,
7011                                                      clang_type,
7012                                                      Type::eResolveStateFull));
7013                             type_sp->SetEncodingType (element_type);
7014                         }
7015                     }
7016                 }
7017                 break;
7018
7019             case DW_TAG_ptr_to_member_type:
7020                 {
7021                     dw_offset_t type_die_offset = DW_INVALID_OFFSET;
7022                     dw_offset_t containing_type_die_offset = DW_INVALID_OFFSET;
7023
7024                     const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
7025
7026                     if (num_attributes > 0) {
7027                         uint32_t i;
7028                         for (i=0; i<num_attributes; ++i)
7029                         {
7030                             attr = attributes.AttributeAtIndex(i);
7031                             DWARFFormValue form_value;
7032                             if (attributes.ExtractFormValueAtIndex(this, i, form_value))
7033                             {
7034                                 switch (attr)
7035                                 {
7036                                     case DW_AT_type:
7037                                         type_die_offset = form_value.Reference(dwarf_cu); break;
7038                                     case DW_AT_containing_type:
7039                                         containing_type_die_offset = form_value.Reference(dwarf_cu); break;
7040                                 }
7041                             }
7042                         }
7043
7044                         Type *pointee_type = ResolveTypeUID(type_die_offset);
7045                         Type *class_type = ResolveTypeUID(containing_type_die_offset);
7046
7047                         ClangASTType pointee_clang_type = pointee_type->GetClangForwardType();
7048                         ClangASTType class_clang_type = class_type->GetClangLayoutType();
7049
7050                         clang_type = pointee_clang_type.CreateMemberPointerType(class_clang_type);
7051
7052                         byte_size = clang_type.GetByteSize();
7053
7054                         type_sp.reset( new Type (MakeUserID(die->GetOffset()),
7055                                                  this,
7056                                                  type_name_const_str,
7057                                                  byte_size,
7058                                                  NULL,
7059                                                  LLDB_INVALID_UID,
7060                                                  Type::eEncodingIsUID,
7061                                                  NULL,
7062                                                  clang_type,
7063                                                  Type::eResolveStateForward));
7064                     }
7065
7066                     break;
7067                 }
7068             default:
7069                 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",
7070                                                            die->GetOffset(),
7071                                                            tag,
7072                                                            DW_TAG_value_to_name(tag));
7073                 break;
7074             }
7075
7076             if (type_sp.get())
7077             {
7078                 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die);
7079                 dw_tag_t sc_parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
7080
7081                 SymbolContextScope * symbol_context_scope = NULL;
7082                 if (sc_parent_tag == DW_TAG_compile_unit)
7083                 {
7084                     symbol_context_scope = sc.comp_unit;
7085                 }
7086                 else if (sc.function != NULL)
7087                 {
7088                     symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
7089                     if (symbol_context_scope == NULL)
7090                         symbol_context_scope = sc.function;
7091                 }
7092
7093                 if (symbol_context_scope != NULL)
7094                 {
7095                     type_sp->SetSymbolContextScope(symbol_context_scope);
7096                 }
7097
7098                 // We are ready to put this type into the uniqued list up at the module level
7099                 type_list->Insert (type_sp);
7100
7101                 m_die_to_type[die] = type_sp.get();
7102             }
7103         }
7104         else if (type_ptr != DIE_IS_BEING_PARSED)
7105         {
7106             type_sp = type_ptr->shared_from_this();
7107         }
7108     }
7109     return type_sp;
7110 }
7111
7112 size_t
7113 SymbolFileDWARF::ParseTypes
7114 (
7115     const SymbolContext& sc,
7116     DWARFCompileUnit* dwarf_cu,
7117     const DWARFDebugInfoEntry *die,
7118     bool parse_siblings,
7119     bool parse_children
7120 )
7121 {
7122     size_t types_added = 0;
7123     while (die != NULL)
7124     {
7125         bool type_is_new = false;
7126         if (ParseType(sc, dwarf_cu, die, &type_is_new).get())
7127         {
7128             if (type_is_new)
7129                 ++types_added;
7130         }
7131
7132         if (parse_children && die->HasChildren())
7133         {
7134             if (die->Tag() == DW_TAG_subprogram)
7135             {
7136                 SymbolContext child_sc(sc);
7137                 child_sc.function = sc.comp_unit->FindFunctionByUID(MakeUserID(die->GetOffset())).get();
7138                 types_added += ParseTypes(child_sc, dwarf_cu, die->GetFirstChild(), true, true);
7139             }
7140             else
7141                 types_added += ParseTypes(sc, dwarf_cu, die->GetFirstChild(), true, true);
7142         }
7143
7144         if (parse_siblings)
7145             die = die->GetSibling();
7146         else
7147             die = NULL;
7148     }
7149     return types_added;
7150 }
7151
7152
7153 size_t
7154 SymbolFileDWARF::ParseFunctionBlocks (const SymbolContext &sc)
7155 {
7156     assert(sc.comp_unit && sc.function);
7157     size_t functions_added = 0;
7158     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
7159     if (dwarf_cu)
7160     {
7161         dw_offset_t function_die_offset = sc.function->GetID();
7162         const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(function_die_offset);
7163         if (function_die)
7164         {
7165             ParseFunctionBlocks(sc, &sc.function->GetBlock (false), dwarf_cu, function_die, LLDB_INVALID_ADDRESS, 0);
7166         }
7167     }
7168
7169     return functions_added;
7170 }
7171
7172
7173 size_t
7174 SymbolFileDWARF::ParseTypes (const SymbolContext &sc)
7175 {
7176     // At least a compile unit must be valid
7177     assert(sc.comp_unit);
7178     size_t types_added = 0;
7179     DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
7180     if (dwarf_cu)
7181     {
7182         if (sc.function)
7183         {
7184             dw_offset_t function_die_offset = sc.function->GetID();
7185             const DWARFDebugInfoEntry *func_die = dwarf_cu->GetDIEPtr(function_die_offset);
7186             if (func_die && func_die->HasChildren())
7187             {
7188                 types_added = ParseTypes(sc, dwarf_cu, func_die->GetFirstChild(), true, true);
7189             }
7190         }
7191         else
7192         {
7193             const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->DIE();
7194             if (dwarf_cu_die && dwarf_cu_die->HasChildren())
7195             {
7196                 types_added = ParseTypes(sc, dwarf_cu, dwarf_cu_die->GetFirstChild(), true, true);
7197             }
7198         }
7199     }
7200
7201     return types_added;
7202 }
7203
7204 size_t
7205 SymbolFileDWARF::ParseVariablesForContext (const SymbolContext& sc)
7206 {
7207     if (sc.comp_unit != NULL)
7208     {
7209         DWARFDebugInfo* info = DebugInfo();
7210         if (info == NULL)
7211             return 0;
7212
7213         if (sc.function)
7214         {
7215             DWARFCompileUnit* dwarf_cu = info->GetCompileUnitContainingDIE(sc.function->GetID()).get();
7216
7217             if (dwarf_cu == NULL)
7218                 return 0;
7219
7220             const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(sc.function->GetID());
7221
7222             dw_addr_t func_lo_pc = function_die->GetAttributeValueAsUnsigned (this, dwarf_cu, DW_AT_low_pc, LLDB_INVALID_ADDRESS);
7223             if (func_lo_pc != LLDB_INVALID_ADDRESS)
7224             {
7225                 const size_t num_variables = ParseVariables(sc, dwarf_cu, func_lo_pc, function_die->GetFirstChild(), true, true);
7226
7227                 // Let all blocks know they have parse all their variables
7228                 sc.function->GetBlock (false).SetDidParseVariables (true, true);
7229                 return num_variables;
7230             }
7231         }
7232         else if (sc.comp_unit)
7233         {
7234             DWARFCompileUnit* dwarf_cu = info->GetCompileUnit(sc.comp_unit->GetID()).get();
7235
7236             if (dwarf_cu == NULL)
7237                 return 0;
7238
7239             uint32_t vars_added = 0;
7240             VariableListSP variables (sc.comp_unit->GetVariableList(false));
7241
7242             if (variables.get() == NULL)
7243             {
7244                 variables.reset(new VariableList());
7245                 sc.comp_unit->SetVariableList(variables);
7246
7247                 DWARFCompileUnit* match_dwarf_cu = NULL;
7248                 const DWARFDebugInfoEntry* die = NULL;
7249                 DIEArray die_offsets;
7250                 if (m_using_apple_tables)
7251                 {
7252                     if (m_apple_names_ap.get())
7253                     {
7254                         DWARFMappedHash::DIEInfoArray hash_data_array;
7255                         if (m_apple_names_ap->AppendAllDIEsInRange (dwarf_cu->GetOffset(),
7256                                                                     dwarf_cu->GetNextCompileUnitOffset(),
7257                                                                     hash_data_array))
7258                         {
7259                             DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
7260                         }
7261                     }
7262                 }
7263                 else
7264                 {
7265                     // Index if we already haven't to make sure the compile units
7266                     // get indexed and make their global DIE index list
7267                     if (!m_indexed)
7268                         Index ();
7269
7270                     m_global_index.FindAllEntriesForCompileUnit (dwarf_cu->GetOffset(),
7271                                                                  dwarf_cu->GetNextCompileUnitOffset(),
7272                                                                  die_offsets);
7273                 }
7274
7275                 const size_t num_matches = die_offsets.size();
7276                 if (num_matches)
7277                 {
7278                     DWARFDebugInfo* debug_info = DebugInfo();
7279                     for (size_t i=0; i<num_matches; ++i)
7280                     {
7281                         const dw_offset_t die_offset = die_offsets[i];
7282                         die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &match_dwarf_cu);
7283                         if (die)
7284                         {
7285                             VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, LLDB_INVALID_ADDRESS));
7286                             if (var_sp)
7287                             {
7288                                 variables->AddVariableIfUnique (var_sp);
7289                                 ++vars_added;
7290                             }
7291                         }
7292                         else
7293                         {
7294                             if (m_using_apple_tables)
7295                             {
7296                                 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x)\n", die_offset);
7297                             }
7298                         }
7299
7300                     }
7301                 }
7302             }
7303             return vars_added;
7304         }
7305     }
7306     return 0;
7307 }
7308
7309
7310 VariableSP
7311 SymbolFileDWARF::ParseVariableDIE
7312 (
7313     const SymbolContext& sc,
7314     DWARFCompileUnit* dwarf_cu,
7315     const DWARFDebugInfoEntry *die,
7316     const lldb::addr_t func_low_pc
7317 )
7318 {
7319
7320     VariableSP var_sp (m_die_to_variable_sp[die]);
7321     if (var_sp)
7322         return var_sp;  // Already been parsed!
7323
7324     const dw_tag_t tag = die->Tag();
7325     ModuleSP module = GetObjectFile()->GetModule();
7326
7327     if ((tag == DW_TAG_variable) ||
7328         (tag == DW_TAG_constant) ||
7329         (tag == DW_TAG_formal_parameter && sc.function))
7330     {
7331         DWARFDebugInfoEntry::Attributes attributes;
7332         const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
7333         if (num_attributes > 0)
7334         {
7335             const char *name = NULL;
7336             const char *mangled = NULL;
7337             Declaration decl;
7338             uint32_t i;
7339             lldb::user_id_t type_uid = LLDB_INVALID_UID;
7340             DWARFExpression location;
7341             bool is_external = false;
7342             bool is_artificial = false;
7343             bool location_is_const_value_data = false;
7344             bool has_explicit_location = false;
7345             //AccessType accessibility = eAccessNone;
7346
7347             for (i=0; i<num_attributes; ++i)
7348             {
7349                 dw_attr_t attr = attributes.AttributeAtIndex(i);
7350                 DWARFFormValue form_value;
7351                 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
7352                 {
7353                     switch (attr)
7354                     {
7355                     case DW_AT_decl_file:   decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
7356                     case DW_AT_decl_line:   decl.SetLine(form_value.Unsigned()); break;
7357                     case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
7358                     case DW_AT_name:        name = form_value.AsCString(&get_debug_str_data()); break;
7359                     case DW_AT_linkage_name:
7360                     case DW_AT_MIPS_linkage_name: mangled = form_value.AsCString(&get_debug_str_data()); break;
7361                     case DW_AT_type:        type_uid = form_value.Reference(dwarf_cu); break;
7362                     case DW_AT_external:    is_external = form_value.Boolean(); break;
7363                     case DW_AT_const_value:
7364                         // If we have already found a DW_AT_location attribute, ignore this attribute.
7365                         if (!has_explicit_location)
7366                         {
7367                             location_is_const_value_data = true;
7368                             // The constant value will be either a block, a data value or a string.
7369                             const DWARFDataExtractor& debug_info_data = get_debug_info_data();
7370                             if (DWARFFormValue::IsBlockForm(form_value.Form()))
7371                             {
7372                                 // Retrieve the value as a block expression.
7373                                 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
7374                                 uint32_t block_length = form_value.Unsigned();
7375                                 location.CopyOpcodeData(module, debug_info_data, block_offset, block_length);
7376                             }
7377                             else if (DWARFFormValue::IsDataForm(form_value.Form()))
7378                             {
7379                                 // Retrieve the value as a data expression.
7380                                 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
7381                                 uint32_t data_offset = attributes.DIEOffsetAtIndex(i);
7382                                 uint32_t data_length = fixed_form_sizes[form_value.Form()];
7383                                 location.CopyOpcodeData(module, debug_info_data, data_offset, data_length);
7384                             }
7385                             else
7386                             {
7387                                 // Retrieve the value as a string expression.
7388                                 if (form_value.Form() == DW_FORM_strp)
7389                                 {
7390                                     const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
7391                                     uint32_t data_offset = attributes.DIEOffsetAtIndex(i);
7392                                     uint32_t data_length = fixed_form_sizes[form_value.Form()];
7393                                     location.CopyOpcodeData(module, debug_info_data, data_offset, data_length);
7394                                 }
7395                                 else
7396                                 {
7397                                     const char *str = form_value.AsCString(&debug_info_data);
7398                                     uint32_t string_offset = str - (const char *)debug_info_data.GetDataStart();
7399                                     uint32_t string_length = strlen(str) + 1;
7400                                     location.CopyOpcodeData(module, debug_info_data, string_offset, string_length);
7401                                 }
7402                             }
7403                         }
7404                         break;
7405                     case DW_AT_location:
7406                         {
7407                             location_is_const_value_data = false;
7408                             has_explicit_location = true;
7409                             if (form_value.BlockData())
7410                             {
7411                                 const DWARFDataExtractor& debug_info_data = get_debug_info_data();
7412
7413                                 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
7414                                 uint32_t block_length = form_value.Unsigned();
7415                                 location.CopyOpcodeData(module, get_debug_info_data(), block_offset, block_length);
7416                             }
7417                             else
7418                             {
7419                                 const DWARFDataExtractor&    debug_loc_data = get_debug_loc_data();
7420                                 const dw_offset_t debug_loc_offset = form_value.Unsigned();
7421
7422                                 size_t loc_list_length = DWARFLocationList::Size(debug_loc_data, debug_loc_offset);
7423                                 if (loc_list_length > 0)
7424                                 {
7425                                     location.CopyOpcodeData(module, debug_loc_data, debug_loc_offset, loc_list_length);
7426                                     assert (func_low_pc != LLDB_INVALID_ADDRESS);
7427                                     location.SetLocationListSlide (func_low_pc - dwarf_cu->GetBaseAddress());
7428                                 }
7429                             }
7430                         }
7431                         break;
7432
7433                     case DW_AT_artificial:      is_artificial = form_value.Boolean(); break;
7434                     case DW_AT_accessibility:   break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
7435                     case DW_AT_declaration:
7436                     case DW_AT_description:
7437                     case DW_AT_endianity:
7438                     case DW_AT_segment:
7439                     case DW_AT_start_scope:
7440                     case DW_AT_visibility:
7441                     default:
7442                     case DW_AT_abstract_origin:
7443                     case DW_AT_sibling:
7444                     case DW_AT_specification:
7445                         break;
7446                     }
7447                 }
7448             }
7449
7450             ValueType scope = eValueTypeInvalid;
7451
7452             const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die);
7453             dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
7454             SymbolContextScope * symbol_context_scope = NULL;
7455
7456             // DWARF doesn't specify if a DW_TAG_variable is a local, global
7457             // or static variable, so we have to do a little digging by
7458             // looking at the location of a varaible to see if it contains
7459             // a DW_OP_addr opcode _somewhere_ in the definition. I say
7460             // somewhere because clang likes to combine small global variables
7461             // into the same symbol and have locations like:
7462             // DW_OP_addr(0x1000), DW_OP_constu(2), DW_OP_plus
7463             // So if we don't have a DW_TAG_formal_parameter, we can look at
7464             // the location to see if it contains a DW_OP_addr opcode, and
7465             // then we can correctly classify  our variables.
7466             if (tag == DW_TAG_formal_parameter)
7467                 scope = eValueTypeVariableArgument;
7468             else
7469             {
7470                 bool op_error = false;
7471                 // Check if the location has a DW_OP_addr with any address value...
7472                 lldb::addr_t location_DW_OP_addr = LLDB_INVALID_ADDRESS;
7473                 if (!location_is_const_value_data)
7474                 {
7475                     location_DW_OP_addr = location.GetLocation_DW_OP_addr (0, op_error);
7476                     if (op_error)
7477                     {
7478                         StreamString strm;
7479                         location.DumpLocationForAddress (&strm, eDescriptionLevelFull, 0, 0, NULL);
7480                         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());
7481                     }
7482                 }
7483
7484                 if (location_DW_OP_addr != LLDB_INVALID_ADDRESS)
7485                 {
7486                     if (is_external)
7487                         scope = eValueTypeVariableGlobal;
7488                     else
7489                         scope = eValueTypeVariableStatic;
7490
7491
7492                     SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile ();
7493
7494                     if (debug_map_symfile)
7495                     {
7496                         // When leaving the DWARF in the .o files on darwin,
7497                         // when we have a global variable that wasn't initialized,
7498                         // the .o file might not have allocated a virtual
7499                         // address for the global variable. In this case it will
7500                         // have created a symbol for the global variable
7501                         // that is undefined/data and external and the value will
7502                         // be the byte size of the variable. When we do the
7503                         // address map in SymbolFileDWARFDebugMap we rely on
7504                         // having an address, we need to do some magic here
7505                         // so we can get the correct address for our global
7506                         // variable. The address for all of these entries
7507                         // will be zero, and there will be an undefined symbol
7508                         // in this object file, and the executable will have
7509                         // a matching symbol with a good address. So here we
7510                         // dig up the correct address and replace it in the
7511                         // location for the variable, and set the variable's
7512                         // symbol context scope to be that of the main executable
7513                         // so the file address will resolve correctly.
7514                         bool linked_oso_file_addr = false;
7515                         if (is_external && location_DW_OP_addr == 0)
7516                         {
7517                             // we have a possible uninitialized extern global
7518                             ConstString const_name(mangled ? mangled : name);
7519                             ObjectFile *debug_map_objfile = debug_map_symfile->GetObjectFile();
7520                             if (debug_map_objfile)
7521                             {
7522                                 Symtab *debug_map_symtab = debug_map_objfile->GetSymtab();
7523                                 if (debug_map_symtab)
7524                                 {
7525                                     Symbol *exe_symbol = debug_map_symtab->FindFirstSymbolWithNameAndType (const_name,
7526                                                                                                            eSymbolTypeData,
7527                                                                                                            Symtab::eDebugYes,
7528                                                                                                            Symtab::eVisibilityExtern);
7529                                     if (exe_symbol)
7530                                     {
7531                                         if (exe_symbol->ValueIsAddress())
7532                                         {
7533                                             const addr_t exe_file_addr = exe_symbol->GetAddress().GetFileAddress();
7534                                             if (exe_file_addr != LLDB_INVALID_ADDRESS)
7535                                             {
7536                                                 if (location.Update_DW_OP_addr (exe_file_addr))
7537                                                 {
7538                                                     linked_oso_file_addr = true;
7539                                                     symbol_context_scope = exe_symbol;
7540                                                 }
7541                                             }
7542                                         }
7543                                     }
7544                                 }
7545                             }
7546                         }
7547
7548                         if (!linked_oso_file_addr)
7549                         {
7550                             // The DW_OP_addr is not zero, but it contains a .o file address which
7551                             // needs to be linked up correctly.
7552                             const lldb::addr_t exe_file_addr = debug_map_symfile->LinkOSOFileAddress(this, location_DW_OP_addr);
7553                             if (exe_file_addr != LLDB_INVALID_ADDRESS)
7554                             {
7555                                 // Update the file address for this variable
7556                                 location.Update_DW_OP_addr (exe_file_addr);
7557                             }
7558                             else
7559                             {
7560                                 // Variable didn't make it into the final executable
7561                                 return var_sp;
7562                             }
7563                         }
7564                     }
7565                 }
7566                 else
7567                 {
7568                     scope = eValueTypeVariableLocal;
7569                 }
7570             }
7571
7572             if (symbol_context_scope == NULL)
7573             {
7574                 switch (parent_tag)
7575                 {
7576                 case DW_TAG_subprogram:
7577                 case DW_TAG_inlined_subroutine:
7578                 case DW_TAG_lexical_block:
7579                     if (sc.function)
7580                     {
7581                         symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
7582                         if (symbol_context_scope == NULL)
7583                             symbol_context_scope = sc.function;
7584                     }
7585                     break;
7586
7587                 default:
7588                     symbol_context_scope = sc.comp_unit;
7589                     break;
7590                 }
7591             }
7592
7593             if (symbol_context_scope)
7594             {
7595                 var_sp.reset (new Variable (MakeUserID(die->GetOffset()),
7596                                             name,
7597                                             mangled,
7598                                             SymbolFileTypeSP (new SymbolFileType(*this, type_uid)),
7599                                             scope,
7600                                             symbol_context_scope,
7601                                             &decl,
7602                                             location,
7603                                             is_external,
7604                                             is_artificial));
7605
7606                 var_sp->SetLocationIsConstantValueData (location_is_const_value_data);
7607             }
7608             else
7609             {
7610                 // Not ready to parse this variable yet. It might be a global
7611                 // or static variable that is in a function scope and the function
7612                 // in the symbol context wasn't filled in yet
7613                 return var_sp;
7614             }
7615         }
7616         // Cache var_sp even if NULL (the variable was just a specification or
7617         // was missing vital information to be able to be displayed in the debugger
7618         // (missing location due to optimization, etc)) so we don't re-parse
7619         // this DIE over and over later...
7620         m_die_to_variable_sp[die] = var_sp;
7621     }
7622     return var_sp;
7623 }
7624
7625
7626 const DWARFDebugInfoEntry *
7627 SymbolFileDWARF::FindBlockContainingSpecification (dw_offset_t func_die_offset,
7628                                                    dw_offset_t spec_block_die_offset,
7629                                                    DWARFCompileUnit **result_die_cu_handle)
7630 {
7631     // Give the concrete function die specified by "func_die_offset", find the
7632     // concrete block whose DW_AT_specification or DW_AT_abstract_origin points
7633     // to "spec_block_die_offset"
7634     DWARFDebugInfo* info = DebugInfo();
7635
7636     const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint(func_die_offset, result_die_cu_handle);
7637     if (die)
7638     {
7639         assert (*result_die_cu_handle);
7640         return FindBlockContainingSpecification (*result_die_cu_handle, die, spec_block_die_offset, result_die_cu_handle);
7641     }
7642     return NULL;
7643 }
7644
7645
7646 const DWARFDebugInfoEntry *
7647 SymbolFileDWARF::FindBlockContainingSpecification(DWARFCompileUnit* dwarf_cu,
7648                                                   const DWARFDebugInfoEntry *die,
7649                                                   dw_offset_t spec_block_die_offset,
7650                                                   DWARFCompileUnit **result_die_cu_handle)
7651 {
7652     if (die)
7653     {
7654         switch (die->Tag())
7655         {
7656         case DW_TAG_subprogram:
7657         case DW_TAG_inlined_subroutine:
7658         case DW_TAG_lexical_block:
7659             {
7660                 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_specification, DW_INVALID_OFFSET) == spec_block_die_offset)
7661                 {
7662                     *result_die_cu_handle = dwarf_cu;
7663                     return die;
7664                 }
7665
7666                 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_abstract_origin, DW_INVALID_OFFSET) == spec_block_die_offset)
7667                 {
7668                     *result_die_cu_handle = dwarf_cu;
7669                     return die;
7670                 }
7671             }
7672             break;
7673         }
7674
7675         // Give the concrete function die specified by "func_die_offset", find the
7676         // concrete block whose DW_AT_specification or DW_AT_abstract_origin points
7677         // to "spec_block_die_offset"
7678         for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); child_die != NULL; child_die = child_die->GetSibling())
7679         {
7680             const DWARFDebugInfoEntry *result_die = FindBlockContainingSpecification (dwarf_cu,
7681                                                                                       child_die,
7682                                                                                       spec_block_die_offset,
7683                                                                                       result_die_cu_handle);
7684             if (result_die)
7685                 return result_die;
7686         }
7687     }
7688
7689     *result_die_cu_handle = NULL;
7690     return NULL;
7691 }
7692
7693 size_t
7694 SymbolFileDWARF::ParseVariables
7695 (
7696     const SymbolContext& sc,
7697     DWARFCompileUnit* dwarf_cu,
7698     const lldb::addr_t func_low_pc,
7699     const DWARFDebugInfoEntry *orig_die,
7700     bool parse_siblings,
7701     bool parse_children,
7702     VariableList* cc_variable_list
7703 )
7704 {
7705     if (orig_die == NULL)
7706         return 0;
7707
7708     VariableListSP variable_list_sp;
7709
7710     size_t vars_added = 0;
7711     const DWARFDebugInfoEntry *die = orig_die;
7712     while (die != NULL)
7713     {
7714         dw_tag_t tag = die->Tag();
7715
7716         // Check to see if we have already parsed this variable or constant?
7717         if (m_die_to_variable_sp[die])
7718         {
7719             if (cc_variable_list)
7720                 cc_variable_list->AddVariableIfUnique (m_die_to_variable_sp[die]);
7721         }
7722         else
7723         {
7724             // We haven't already parsed it, lets do that now.
7725             if ((tag == DW_TAG_variable) ||
7726                 (tag == DW_TAG_constant) ||
7727                 (tag == DW_TAG_formal_parameter && sc.function))
7728             {
7729                 if (variable_list_sp.get() == NULL)
7730                 {
7731                     const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(orig_die);
7732                     dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
7733                     switch (parent_tag)
7734                     {
7735                         case DW_TAG_compile_unit:
7736                             if (sc.comp_unit != NULL)
7737                             {
7738                                 variable_list_sp = sc.comp_unit->GetVariableList(false);
7739                                 if (variable_list_sp.get() == NULL)
7740                                 {
7741                                     variable_list_sp.reset(new VariableList());
7742                                     sc.comp_unit->SetVariableList(variable_list_sp);
7743                                 }
7744                             }
7745                             else
7746                             {
7747                                 GetObjectFile()->GetModule()->ReportError ("parent 0x%8.8" PRIx64 " %s with no valid compile unit in symbol context for 0x%8.8" PRIx64 " %s.\n",
7748                                                                            MakeUserID(sc_parent_die->GetOffset()),
7749                                                                            DW_TAG_value_to_name (parent_tag),
7750                                                                            MakeUserID(orig_die->GetOffset()),
7751                                                                            DW_TAG_value_to_name (orig_die->Tag()));
7752                             }
7753                             break;
7754
7755                         case DW_TAG_subprogram:
7756                         case DW_TAG_inlined_subroutine:
7757                         case DW_TAG_lexical_block:
7758                             if (sc.function != NULL)
7759                             {
7760                                 // Check to see if we already have parsed the variables for the given scope
7761
7762                                 Block *block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
7763                                 if (block == NULL)
7764                                 {
7765                                     // This must be a specification or abstract origin with
7766                                     // a concrete block couterpart in the current function. We need
7767                                     // to find the concrete block so we can correctly add the
7768                                     // variable to it
7769                                     DWARFCompileUnit *concrete_block_die_cu = dwarf_cu;
7770                                     const DWARFDebugInfoEntry *concrete_block_die = FindBlockContainingSpecification (sc.function->GetID(),
7771                                                                                                                       sc_parent_die->GetOffset(),
7772                                                                                                                       &concrete_block_die_cu);
7773                                     if (concrete_block_die)
7774                                         block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(concrete_block_die->GetOffset()));
7775                                 }
7776
7777                                 if (block != NULL)
7778                                 {
7779                                     const bool can_create = false;
7780                                     variable_list_sp = block->GetBlockVariableList (can_create);
7781                                     if (variable_list_sp.get() == NULL)
7782                                     {
7783                                         variable_list_sp.reset(new VariableList());
7784                                         block->SetVariableList(variable_list_sp);
7785                                     }
7786                                 }
7787                             }
7788                             break;
7789
7790                         default:
7791                              GetObjectFile()->GetModule()->ReportError ("didn't find appropriate parent DIE for variable list for 0x%8.8" PRIx64 " %s.\n",
7792                                                                         MakeUserID(orig_die->GetOffset()),
7793                                                                         DW_TAG_value_to_name (orig_die->Tag()));
7794                             break;
7795                     }
7796                 }
7797
7798                 if (variable_list_sp)
7799                 {
7800                     VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, func_low_pc));
7801                     if (var_sp)
7802                     {
7803                         variable_list_sp->AddVariableIfUnique (var_sp);
7804                         if (cc_variable_list)
7805                             cc_variable_list->AddVariableIfUnique (var_sp);
7806                         ++vars_added;
7807                     }
7808                 }
7809             }
7810         }
7811
7812         bool skip_children = (sc.function == NULL && tag == DW_TAG_subprogram);
7813
7814         if (!skip_children && parse_children && die->HasChildren())
7815         {
7816             vars_added += ParseVariables(sc, dwarf_cu, func_low_pc, die->GetFirstChild(), true, true, cc_variable_list);
7817         }
7818
7819         if (parse_siblings)
7820             die = die->GetSibling();
7821         else
7822             die = NULL;
7823     }
7824     return vars_added;
7825 }
7826
7827 //------------------------------------------------------------------
7828 // PluginInterface protocol
7829 //------------------------------------------------------------------
7830 ConstString
7831 SymbolFileDWARF::GetPluginName()
7832 {
7833     return GetPluginNameStatic();
7834 }
7835
7836 uint32_t
7837 SymbolFileDWARF::GetPluginVersion()
7838 {
7839     return 1;
7840 }
7841
7842 void
7843 SymbolFileDWARF::CompleteTagDecl (void *baton, clang::TagDecl *decl)
7844 {
7845     SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7846     ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl);
7847     if (clang_type)
7848         symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type);
7849 }
7850
7851 void
7852 SymbolFileDWARF::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *decl)
7853 {
7854     SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7855     ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl);
7856     if (clang_type)
7857         symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type);
7858 }
7859
7860 void
7861 SymbolFileDWARF::DumpIndexes ()
7862 {
7863     StreamFile s(stdout, false);
7864
7865     s.Printf ("DWARF index for (%s) '%s':",
7866               GetObjectFile()->GetModule()->GetArchitecture().GetArchitectureName(),
7867               GetObjectFile()->GetFileSpec().GetPath().c_str());
7868     s.Printf("\nFunction basenames:\n");    m_function_basename_index.Dump (&s);
7869     s.Printf("\nFunction fullnames:\n");    m_function_fullname_index.Dump (&s);
7870     s.Printf("\nFunction methods:\n");      m_function_method_index.Dump (&s);
7871     s.Printf("\nFunction selectors:\n");    m_function_selector_index.Dump (&s);
7872     s.Printf("\nObjective C class selectors:\n");    m_objc_class_selectors_index.Dump (&s);
7873     s.Printf("\nGlobals and statics:\n");   m_global_index.Dump (&s);
7874     s.Printf("\nTypes:\n");                 m_type_index.Dump (&s);
7875     s.Printf("\nNamepaces:\n");             m_namespace_index.Dump (&s);
7876 }
7877
7878 void
7879 SymbolFileDWARF::SearchDeclContext (const clang::DeclContext *decl_context,
7880                                     const char *name,
7881                                     llvm::SmallVectorImpl <clang::NamedDecl *> *results)
7882 {
7883     DeclContextToDIEMap::iterator iter = m_decl_ctx_to_die.find(decl_context);
7884
7885     if (iter == m_decl_ctx_to_die.end())
7886         return;
7887
7888     for (DIEPointerSet::iterator pos = iter->second.begin(), end = iter->second.end(); pos != end; ++pos)
7889     {
7890         const DWARFDebugInfoEntry *context_die = *pos;
7891
7892         if (!results)
7893             return;
7894
7895         DWARFDebugInfo* info = DebugInfo();
7896
7897         DIEArray die_offsets;
7898
7899         DWARFCompileUnit* dwarf_cu = NULL;
7900         const DWARFDebugInfoEntry* die = NULL;
7901
7902         if (m_using_apple_tables)
7903         {
7904             if (m_apple_types_ap.get())
7905                 m_apple_types_ap->FindByName (name, die_offsets);
7906         }
7907         else
7908         {
7909             if (!m_indexed)
7910                 Index ();
7911
7912             m_type_index.Find (ConstString(name), die_offsets);
7913         }
7914
7915         const size_t num_matches = die_offsets.size();
7916
7917         if (num_matches)
7918         {
7919             for (size_t i = 0; i < num_matches; ++i)
7920             {
7921                 const dw_offset_t die_offset = die_offsets[i];
7922                 die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
7923
7924                 if (die->GetParent() != context_die)
7925                     continue;
7926
7927                 Type *matching_type = ResolveType (dwarf_cu, die);
7928
7929                 clang::QualType qual_type = matching_type->GetClangForwardType().GetQualType();
7930
7931                 if (const clang::TagType *tag_type = llvm::dyn_cast<clang::TagType>(qual_type.getTypePtr()))
7932                 {
7933                     clang::TagDecl *tag_decl = tag_type->getDecl();
7934                     results->push_back(tag_decl);
7935                 }
7936                 else if (const clang::TypedefType *typedef_type = llvm::dyn_cast<clang::TypedefType>(qual_type.getTypePtr()))
7937                 {
7938                     clang::TypedefNameDecl *typedef_decl = typedef_type->getDecl();
7939                     results->push_back(typedef_decl);
7940                 }
7941             }
7942         }
7943     }
7944 }
7945
7946 void
7947 SymbolFileDWARF::FindExternalVisibleDeclsByName (void *baton,
7948                                                  const clang::DeclContext *decl_context,
7949                                                  clang::DeclarationName decl_name,
7950                                                  llvm::SmallVectorImpl <clang::NamedDecl *> *results)
7951 {
7952
7953     switch (decl_context->getDeclKind())
7954     {
7955     case clang::Decl::Namespace:
7956     case clang::Decl::TranslationUnit:
7957         {
7958             SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7959             symbol_file_dwarf->SearchDeclContext (decl_context, decl_name.getAsString().c_str(), results);
7960         }
7961         break;
7962     default:
7963         break;
7964     }
7965 }
7966
7967 bool
7968 SymbolFileDWARF::LayoutRecordType (void *baton,
7969                                    const clang::RecordDecl *record_decl,
7970                                    uint64_t &size,
7971                                    uint64_t &alignment,
7972                                    llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets,
7973                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
7974                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets)
7975 {
7976     SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7977     return symbol_file_dwarf->LayoutRecordType (record_decl, size, alignment, field_offsets, base_offsets, vbase_offsets);
7978 }
7979
7980
7981 bool
7982 SymbolFileDWARF::LayoutRecordType (const clang::RecordDecl *record_decl,
7983                                    uint64_t &bit_size,
7984                                    uint64_t &alignment,
7985                                    llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets,
7986                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
7987                                    llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets)
7988 {
7989     Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
7990     RecordDeclToLayoutMap::iterator pos = m_record_decl_to_layout_map.find (record_decl);
7991     bool success = false;
7992     base_offsets.clear();
7993     vbase_offsets.clear();
7994     if (pos != m_record_decl_to_layout_map.end())
7995     {
7996         bit_size = pos->second.bit_size;
7997         alignment = pos->second.alignment;
7998         field_offsets.swap(pos->second.field_offsets);
7999         base_offsets.swap (pos->second.base_offsets);
8000         vbase_offsets.swap (pos->second.vbase_offsets);
8001         m_record_decl_to_layout_map.erase(pos);
8002         success = true;
8003     }
8004     else
8005     {
8006         bit_size = 0;
8007         alignment = 0;
8008         field_offsets.clear();
8009     }
8010
8011     if (log)
8012         GetObjectFile()->GetModule()->LogMessage (log,
8013                                                   "SymbolFileDWARF::LayoutRecordType (record_decl = %p, bit_size = %" PRIu64 ", alignment = %" PRIu64 ", field_offsets[%u],base_offsets[%u], vbase_offsets[%u]) success = %i",
8014                                                   record_decl,
8015                                                   bit_size,
8016                                                   alignment,
8017                                                   (uint32_t)field_offsets.size(),
8018                                                   (uint32_t)base_offsets.size(),
8019                                                   (uint32_t)vbase_offsets.size(),
8020                                                   success);
8021     return success;
8022 }
8023
8024
8025 SymbolFileDWARFDebugMap *
8026 SymbolFileDWARF::GetDebugMapSymfile ()
8027 {
8028     if (m_debug_map_symfile == NULL && !m_debug_map_module_wp.expired())
8029     {
8030         lldb::ModuleSP module_sp (m_debug_map_module_wp.lock());
8031         if (module_sp)
8032         {
8033             SymbolVendor *sym_vendor = module_sp->GetSymbolVendor();
8034             if (sym_vendor)
8035                 m_debug_map_symfile = (SymbolFileDWARFDebugMap *)sym_vendor->GetSymbolFile();
8036         }
8037     }
8038     return m_debug_map_symfile;
8039 }
8040
8041