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/ModuleList.h" 31 #include "lldb/Core/ModuleSpec.h" 32 #include "lldb/Core/PluginManager.h" 33 #include "lldb/Core/RegularExpression.h" 34 #include "lldb/Core/Scalar.h" 35 #include "lldb/Core/Section.h" 36 #include "lldb/Core/StreamFile.h" 37 #include "lldb/Core/StreamString.h" 38 #include "lldb/Core/Timer.h" 39 #include "lldb/Core/Value.h" 40 41 #include "lldb/Expression/ClangModulesDeclVendor.h" 42 43 #include "lldb/Host/Host.h" 44 45 #include "lldb/Symbol/Block.h" 46 #include "lldb/Symbol/ClangExternalASTSourceCallbacks.h" 47 #include "lldb/Symbol/CompileUnit.h" 48 #include "lldb/Symbol/LineTable.h" 49 #include "lldb/Symbol/ObjectFile.h" 50 #include "lldb/Symbol/SymbolVendor.h" 51 #include "lldb/Symbol/VariableList.h" 52 53 #include "lldb/Target/ObjCLanguageRuntime.h" 54 #include "lldb/Target/CPPLanguageRuntime.h" 55 56 #include "DWARFCompileUnit.h" 57 #include "DWARFDebugAbbrev.h" 58 #include "DWARFDebugAranges.h" 59 #include "DWARFDebugInfo.h" 60 #include "DWARFDebugInfoEntry.h" 61 #include "DWARFDebugLine.h" 62 #include "DWARFDebugPubnames.h" 63 #include "DWARFDebugRanges.h" 64 #include "DWARFDeclContext.h" 65 #include "DWARFDIECollection.h" 66 #include "DWARFFormValue.h" 67 #include "DWARFLocationList.h" 68 #include "LogChannelDWARF.h" 69 #include "SymbolFileDWARFDebugMap.h" 70 71 #include <map> 72 73 #include <ctype.h> 74 #include <string.h> 75 76 //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN 77 78 #ifdef ENABLE_DEBUG_PRINTF 79 #include <stdio.h> 80 #define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__) 81 #else 82 #define DEBUG_PRINTF(fmt, ...) 83 #endif 84 85 #define DIE_IS_BEING_PARSED ((lldb_private::Type*)1) 86 87 using namespace lldb; 88 using namespace lldb_private; 89 90 //static inline bool 91 //child_requires_parent_class_union_or_struct_to_be_completed (dw_tag_t tag) 92 //{ 93 // switch (tag) 94 // { 95 // default: 96 // break; 97 // case DW_TAG_subprogram: 98 // case DW_TAG_inlined_subroutine: 99 // case DW_TAG_class_type: 100 // case DW_TAG_structure_type: 101 // case DW_TAG_union_type: 102 // return true; 103 // } 104 // return false; 105 //} 106 // 107 static AccessType 108 DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility) 109 { 110 switch (dwarf_accessibility) 111 { 112 case DW_ACCESS_public: return eAccessPublic; 113 case DW_ACCESS_private: return eAccessPrivate; 114 case DW_ACCESS_protected: return eAccessProtected; 115 default: break; 116 } 117 return eAccessNone; 118 } 119 120 static const char* 121 removeHostnameFromPathname(const char* path_from_dwarf) 122 { 123 if (!path_from_dwarf || !path_from_dwarf[0]) 124 { 125 return path_from_dwarf; 126 } 127 128 const char *colon_pos = strchr(path_from_dwarf, ':'); 129 if (!colon_pos) 130 { 131 return path_from_dwarf; 132 } 133 134 // check whether we have a windows path, and so the first character 135 // is a drive-letter not a hostname. 136 if ( 137 colon_pos == path_from_dwarf + 1 && 138 isalpha(*path_from_dwarf) && 139 strlen(path_from_dwarf) > 2 && 140 '\\' == path_from_dwarf[2]) 141 { 142 return path_from_dwarf; 143 } 144 145 return colon_pos + 1; 146 } 147 148 #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE) 149 150 class DIEStack 151 { 152 public: 153 154 void Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) 155 { 156 m_dies.push_back (DIEInfo(cu, die)); 157 } 158 159 160 void LogDIEs (Log *log, SymbolFileDWARF *dwarf) 161 { 162 StreamString log_strm; 163 const size_t n = m_dies.size(); 164 log_strm.Printf("DIEStack[%" PRIu64 "]:\n", (uint64_t)n); 165 for (size_t i=0; i<n; i++) 166 { 167 DWARFCompileUnit *cu = m_dies[i].cu; 168 const DWARFDebugInfoEntry *die = m_dies[i].die; 169 std::string qualified_name; 170 die->GetQualifiedName(dwarf, cu, qualified_name); 171 log_strm.Printf ("[%" PRIu64 "] 0x%8.8x: %s name='%s'\n", 172 (uint64_t)i, 173 die->GetOffset(), 174 DW_TAG_value_to_name(die->Tag()), 175 qualified_name.c_str()); 176 } 177 log->PutCString(log_strm.GetData()); 178 } 179 void Pop () 180 { 181 m_dies.pop_back(); 182 } 183 184 class ScopedPopper 185 { 186 public: 187 ScopedPopper (DIEStack &die_stack) : 188 m_die_stack (die_stack), 189 m_valid (false) 190 { 191 } 192 193 void 194 Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) 195 { 196 m_valid = true; 197 m_die_stack.Push (cu, die); 198 } 199 200 ~ScopedPopper () 201 { 202 if (m_valid) 203 m_die_stack.Pop(); 204 } 205 206 207 208 protected: 209 DIEStack &m_die_stack; 210 bool m_valid; 211 }; 212 213 protected: 214 struct DIEInfo { 215 DIEInfo (DWARFCompileUnit *c, const DWARFDebugInfoEntry *d) : 216 cu(c), 217 die(d) 218 { 219 } 220 DWARFCompileUnit *cu; 221 const DWARFDebugInfoEntry *die; 222 }; 223 typedef std::vector<DIEInfo> Stack; 224 Stack m_dies; 225 }; 226 #endif 227 228 void 229 SymbolFileDWARF::Initialize() 230 { 231 LogChannelDWARF::Initialize(); 232 PluginManager::RegisterPlugin (GetPluginNameStatic(), 233 GetPluginDescriptionStatic(), 234 CreateInstance); 235 } 236 237 void 238 SymbolFileDWARF::Terminate() 239 { 240 PluginManager::UnregisterPlugin (CreateInstance); 241 LogChannelDWARF::Initialize(); 242 } 243 244 245 lldb_private::ConstString 246 SymbolFileDWARF::GetPluginNameStatic() 247 { 248 static ConstString g_name("dwarf"); 249 return g_name; 250 } 251 252 const char * 253 SymbolFileDWARF::GetPluginDescriptionStatic() 254 { 255 return "DWARF and DWARF3 debug symbol file reader."; 256 } 257 258 259 SymbolFile* 260 SymbolFileDWARF::CreateInstance (ObjectFile* obj_file) 261 { 262 return new SymbolFileDWARF(obj_file); 263 } 264 265 TypeList * 266 SymbolFileDWARF::GetTypeList () 267 { 268 if (GetDebugMapSymfile ()) 269 return m_debug_map_symfile->GetTypeList(); 270 return m_obj_file->GetModule()->GetTypeList(); 271 272 } 273 void 274 SymbolFileDWARF::GetTypes (DWARFCompileUnit* cu, 275 const DWARFDebugInfoEntry *die, 276 dw_offset_t min_die_offset, 277 dw_offset_t max_die_offset, 278 uint32_t type_mask, 279 TypeSet &type_set) 280 { 281 if (cu) 282 { 283 if (die) 284 { 285 const dw_offset_t die_offset = die->GetOffset(); 286 287 if (die_offset >= max_die_offset) 288 return; 289 290 if (die_offset >= min_die_offset) 291 { 292 const dw_tag_t tag = die->Tag(); 293 294 bool add_type = false; 295 296 switch (tag) 297 { 298 case DW_TAG_array_type: add_type = (type_mask & eTypeClassArray ) != 0; break; 299 case DW_TAG_unspecified_type: 300 case DW_TAG_base_type: add_type = (type_mask & eTypeClassBuiltin ) != 0; break; 301 case DW_TAG_class_type: add_type = (type_mask & eTypeClassClass ) != 0; break; 302 case DW_TAG_structure_type: add_type = (type_mask & eTypeClassStruct ) != 0; break; 303 case DW_TAG_union_type: add_type = (type_mask & eTypeClassUnion ) != 0; break; 304 case DW_TAG_enumeration_type: add_type = (type_mask & eTypeClassEnumeration ) != 0; break; 305 case DW_TAG_subroutine_type: 306 case DW_TAG_subprogram: 307 case DW_TAG_inlined_subroutine: add_type = (type_mask & eTypeClassFunction ) != 0; break; 308 case DW_TAG_pointer_type: add_type = (type_mask & eTypeClassPointer ) != 0; break; 309 case DW_TAG_rvalue_reference_type: 310 case DW_TAG_reference_type: add_type = (type_mask & eTypeClassReference ) != 0; break; 311 case DW_TAG_typedef: add_type = (type_mask & eTypeClassTypedef ) != 0; break; 312 case DW_TAG_ptr_to_member_type: add_type = (type_mask & eTypeClassMemberPointer ) != 0; break; 313 } 314 315 if (add_type) 316 { 317 const bool assert_not_being_parsed = true; 318 Type *type = ResolveTypeUID (cu, die, assert_not_being_parsed); 319 if (type) 320 { 321 if (type_set.find(type) == type_set.end()) 322 type_set.insert(type); 323 } 324 } 325 } 326 327 for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); 328 child_die != NULL; 329 child_die = child_die->GetSibling()) 330 { 331 GetTypes (cu, child_die, min_die_offset, max_die_offset, type_mask, type_set); 332 } 333 } 334 } 335 } 336 337 size_t 338 SymbolFileDWARF::GetTypes (SymbolContextScope *sc_scope, 339 uint32_t type_mask, 340 TypeList &type_list) 341 342 { 343 TypeSet type_set; 344 345 CompileUnit *comp_unit = NULL; 346 DWARFCompileUnit* dwarf_cu = NULL; 347 if (sc_scope) 348 comp_unit = sc_scope->CalculateSymbolContextCompileUnit(); 349 350 if (comp_unit) 351 { 352 dwarf_cu = GetDWARFCompileUnit(comp_unit); 353 if (dwarf_cu == 0) 354 return 0; 355 GetTypes (dwarf_cu, 356 dwarf_cu->DIE(), 357 dwarf_cu->GetOffset(), 358 dwarf_cu->GetNextCompileUnitOffset(), 359 type_mask, 360 type_set); 361 } 362 else 363 { 364 DWARFDebugInfo* info = DebugInfo(); 365 if (info) 366 { 367 const size_t num_cus = info->GetNumCompileUnits(); 368 for (size_t cu_idx=0; cu_idx<num_cus; ++cu_idx) 369 { 370 dwarf_cu = info->GetCompileUnitAtIndex(cu_idx); 371 if (dwarf_cu) 372 { 373 GetTypes (dwarf_cu, 374 dwarf_cu->DIE(), 375 0, 376 UINT32_MAX, 377 type_mask, 378 type_set); 379 } 380 } 381 } 382 } 383 // if (m_using_apple_tables) 384 // { 385 // DWARFMappedHash::MemoryTable *apple_types = m_apple_types_ap.get(); 386 // if (apple_types) 387 // { 388 // apple_types->ForEach([this, &type_set, apple_types, type_mask](const DWARFMappedHash::DIEInfoArray &die_info_array) -> bool { 389 // 390 // for (auto die_info: die_info_array) 391 // { 392 // bool add_type = TagMatchesTypeMask (type_mask, 0); 393 // if (!add_type) 394 // { 395 // dw_tag_t tag = die_info.tag; 396 // if (tag == 0) 397 // { 398 // const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtr(die_info.offset, NULL); 399 // tag = die->Tag(); 400 // } 401 // add_type = TagMatchesTypeMask (type_mask, tag); 402 // } 403 // if (add_type) 404 // { 405 // Type *type = ResolveTypeUID(die_info.offset); 406 // 407 // if (type_set.find(type) == type_set.end()) 408 // type_set.insert(type); 409 // } 410 // } 411 // return true; // Keep iterating 412 // }); 413 // } 414 // } 415 // else 416 // { 417 // if (!m_indexed) 418 // Index (); 419 // 420 // m_type_index.ForEach([this, &type_set, type_mask](const char *name, uint32_t die_offset) -> bool { 421 // 422 // bool add_type = TagMatchesTypeMask (type_mask, 0); 423 // 424 // if (!add_type) 425 // { 426 // const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtr(die_offset, NULL); 427 // if (die) 428 // { 429 // const dw_tag_t tag = die->Tag(); 430 // add_type = TagMatchesTypeMask (type_mask, tag); 431 // } 432 // } 433 // 434 // if (add_type) 435 // { 436 // Type *type = ResolveTypeUID(die_offset); 437 // 438 // if (type_set.find(type) == type_set.end()) 439 // type_set.insert(type); 440 // } 441 // return true; // Keep iterating 442 // }); 443 // } 444 445 std::set<ClangASTType> clang_type_set; 446 size_t num_types_added = 0; 447 for (Type *type : type_set) 448 { 449 ClangASTType clang_type = type->GetClangForwardType(); 450 if (clang_type_set.find(clang_type) == clang_type_set.end()) 451 { 452 clang_type_set.insert(clang_type); 453 type_list.Insert (type->shared_from_this()); 454 ++num_types_added; 455 } 456 } 457 return num_types_added; 458 } 459 460 461 //---------------------------------------------------------------------- 462 // Gets the first parent that is a lexical block, function or inlined 463 // subroutine, or compile unit. 464 //---------------------------------------------------------------------- 465 static const DWARFDebugInfoEntry * 466 GetParentSymbolContextDIE(const DWARFDebugInfoEntry *child_die) 467 { 468 const DWARFDebugInfoEntry *die; 469 for (die = child_die->GetParent(); die != NULL; die = die->GetParent()) 470 { 471 dw_tag_t tag = die->Tag(); 472 473 switch (tag) 474 { 475 case DW_TAG_compile_unit: 476 case DW_TAG_subprogram: 477 case DW_TAG_inlined_subroutine: 478 case DW_TAG_lexical_block: 479 return die; 480 } 481 } 482 return NULL; 483 } 484 485 486 SymbolFileDWARF::SymbolFileDWARF(ObjectFile* objfile) : 487 SymbolFile (objfile), 488 UserID (0), // Used by SymbolFileDWARFDebugMap to when this class parses .o files to contain the .o file index/ID 489 m_debug_map_module_wp (), 490 m_debug_map_symfile (NULL), 491 m_clang_tu_decl (NULL), 492 m_flags(), 493 m_data_debug_abbrev (), 494 m_data_debug_aranges (), 495 m_data_debug_frame (), 496 m_data_debug_info (), 497 m_data_debug_line (), 498 m_data_debug_loc (), 499 m_data_debug_ranges (), 500 m_data_debug_str (), 501 m_data_apple_names (), 502 m_data_apple_types (), 503 m_data_apple_namespaces (), 504 m_abbr(), 505 m_info(), 506 m_line(), 507 m_apple_names_ap (), 508 m_apple_types_ap (), 509 m_apple_namespaces_ap (), 510 m_apple_objc_ap (), 511 m_function_basename_index(), 512 m_function_fullname_index(), 513 m_function_method_index(), 514 m_function_selector_index(), 515 m_objc_class_selectors_index(), 516 m_global_index(), 517 m_type_index(), 518 m_namespace_index(), 519 m_indexed (false), 520 m_is_external_ast_source (false), 521 m_using_apple_tables (false), 522 m_fetched_external_modules (false), 523 m_supports_DW_AT_APPLE_objc_complete_type (eLazyBoolCalculate), 524 m_ranges(), 525 m_unique_ast_type_map () 526 { 527 } 528 529 SymbolFileDWARF::~SymbolFileDWARF() 530 { 531 if (m_is_external_ast_source) 532 { 533 ModuleSP module_sp (m_obj_file->GetModule()); 534 if (module_sp) 535 module_sp->GetClangASTContext().RemoveExternalSource (); 536 } 537 } 538 539 static const ConstString & 540 GetDWARFMachOSegmentName () 541 { 542 static ConstString g_dwarf_section_name ("__DWARF"); 543 return g_dwarf_section_name; 544 } 545 546 UniqueDWARFASTTypeMap & 547 SymbolFileDWARF::GetUniqueDWARFASTTypeMap () 548 { 549 if (GetDebugMapSymfile ()) 550 return m_debug_map_symfile->GetUniqueDWARFASTTypeMap (); 551 return m_unique_ast_type_map; 552 } 553 554 ClangASTContext & 555 SymbolFileDWARF::GetClangASTContext () 556 { 557 if (GetDebugMapSymfile ()) 558 return m_debug_map_symfile->GetClangASTContext (); 559 560 ClangASTContext &ast = m_obj_file->GetModule()->GetClangASTContext(); 561 if (!m_is_external_ast_source) 562 { 563 m_is_external_ast_source = true; 564 llvm::IntrusiveRefCntPtr<clang::ExternalASTSource> ast_source_ap ( 565 new ClangExternalASTSourceCallbacks (SymbolFileDWARF::CompleteTagDecl, 566 SymbolFileDWARF::CompleteObjCInterfaceDecl, 567 SymbolFileDWARF::FindExternalVisibleDeclsByName, 568 SymbolFileDWARF::LayoutRecordType, 569 this)); 570 ast.SetExternalSource (ast_source_ap); 571 } 572 return ast; 573 } 574 575 void 576 SymbolFileDWARF::InitializeObject() 577 { 578 // Install our external AST source callbacks so we can complete Clang types. 579 ModuleSP module_sp (m_obj_file->GetModule()); 580 if (module_sp) 581 { 582 const SectionList *section_list = module_sp->GetSectionList(); 583 584 const Section* section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get(); 585 586 // Memory map the DWARF mach-o segment so we have everything mmap'ed 587 // to keep our heap memory usage down. 588 if (section) 589 m_obj_file->MemoryMapSectionData(section, m_dwarf_data); 590 } 591 get_apple_names_data(); 592 if (m_data_apple_names.GetByteSize() > 0) 593 { 594 m_apple_names_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_names, get_debug_str_data(), ".apple_names")); 595 if (m_apple_names_ap->IsValid()) 596 m_using_apple_tables = true; 597 else 598 m_apple_names_ap.reset(); 599 } 600 get_apple_types_data(); 601 if (m_data_apple_types.GetByteSize() > 0) 602 { 603 m_apple_types_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_types, get_debug_str_data(), ".apple_types")); 604 if (m_apple_types_ap->IsValid()) 605 m_using_apple_tables = true; 606 else 607 m_apple_types_ap.reset(); 608 } 609 610 get_apple_namespaces_data(); 611 if (m_data_apple_namespaces.GetByteSize() > 0) 612 { 613 m_apple_namespaces_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_namespaces, get_debug_str_data(), ".apple_namespaces")); 614 if (m_apple_namespaces_ap->IsValid()) 615 m_using_apple_tables = true; 616 else 617 m_apple_namespaces_ap.reset(); 618 } 619 620 get_apple_objc_data(); 621 if (m_data_apple_objc.GetByteSize() > 0) 622 { 623 m_apple_objc_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_objc, get_debug_str_data(), ".apple_objc")); 624 if (m_apple_objc_ap->IsValid()) 625 m_using_apple_tables = true; 626 else 627 m_apple_objc_ap.reset(); 628 } 629 } 630 631 bool 632 SymbolFileDWARF::SupportedVersion(uint16_t version) 633 { 634 return version == 2 || version == 3 || version == 4; 635 } 636 637 uint32_t 638 SymbolFileDWARF::CalculateAbilities () 639 { 640 uint32_t abilities = 0; 641 if (m_obj_file != NULL) 642 { 643 const Section* section = NULL; 644 const SectionList *section_list = m_obj_file->GetSectionList(); 645 if (section_list == NULL) 646 return 0; 647 648 uint64_t debug_abbrev_file_size = 0; 649 uint64_t debug_info_file_size = 0; 650 uint64_t debug_line_file_size = 0; 651 652 section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get(); 653 654 if (section) 655 section_list = §ion->GetChildren (); 656 657 section = section_list->FindSectionByType (eSectionTypeDWARFDebugInfo, true).get(); 658 if (section != NULL) 659 { 660 debug_info_file_size = section->GetFileSize(); 661 662 section = section_list->FindSectionByType (eSectionTypeDWARFDebugAbbrev, true).get(); 663 if (section) 664 debug_abbrev_file_size = section->GetFileSize(); 665 else 666 m_flags.Set (flagsGotDebugAbbrevData); 667 668 section = section_list->FindSectionByType (eSectionTypeDWARFDebugAranges, true).get(); 669 if (!section) 670 m_flags.Set (flagsGotDebugArangesData); 671 672 section = section_list->FindSectionByType (eSectionTypeDWARFDebugFrame, true).get(); 673 if (!section) 674 m_flags.Set (flagsGotDebugFrameData); 675 676 section = section_list->FindSectionByType (eSectionTypeDWARFDebugLine, true).get(); 677 if (section) 678 debug_line_file_size = section->GetFileSize(); 679 else 680 m_flags.Set (flagsGotDebugLineData); 681 682 section = section_list->FindSectionByType (eSectionTypeDWARFDebugLoc, true).get(); 683 if (!section) 684 m_flags.Set (flagsGotDebugLocData); 685 686 section = section_list->FindSectionByType (eSectionTypeDWARFDebugMacInfo, true).get(); 687 if (!section) 688 m_flags.Set (flagsGotDebugMacInfoData); 689 690 section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubNames, true).get(); 691 if (!section) 692 m_flags.Set (flagsGotDebugPubNamesData); 693 694 section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubTypes, true).get(); 695 if (!section) 696 m_flags.Set (flagsGotDebugPubTypesData); 697 698 section = section_list->FindSectionByType (eSectionTypeDWARFDebugRanges, true).get(); 699 if (!section) 700 m_flags.Set (flagsGotDebugRangesData); 701 702 section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get(); 703 if (!section) 704 m_flags.Set (flagsGotDebugStrData); 705 } 706 else 707 { 708 const char *symfile_dir_cstr = m_obj_file->GetFileSpec().GetDirectory().GetCString(); 709 if (symfile_dir_cstr) 710 { 711 if (strcasestr(symfile_dir_cstr, ".dsym")) 712 { 713 if (m_obj_file->GetType() == ObjectFile::eTypeDebugInfo) 714 { 715 // We have a dSYM file that didn't have a any debug info. 716 // If the string table has a size of 1, then it was made from 717 // an executable with no debug info, or from an executable that 718 // was stripped. 719 section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get(); 720 if (section && section->GetFileSize() == 1) 721 { 722 m_obj_file->GetModule()->ReportWarning ("empty dSYM file detected, dSYM was created with an executable with no debug info."); 723 } 724 } 725 } 726 } 727 } 728 729 if (debug_abbrev_file_size > 0 && debug_info_file_size > 0) 730 abilities |= CompileUnits | Functions | Blocks | GlobalVariables | LocalVariables | VariableTypes; 731 732 if (debug_line_file_size > 0) 733 abilities |= LineTables; 734 } 735 return abilities; 736 } 737 738 const DWARFDataExtractor& 739 SymbolFileDWARF::GetCachedSectionData (uint32_t got_flag, SectionType sect_type, DWARFDataExtractor &data) 740 { 741 if (m_flags.IsClear (got_flag)) 742 { 743 ModuleSP module_sp (m_obj_file->GetModule()); 744 m_flags.Set (got_flag); 745 const SectionList *section_list = module_sp->GetSectionList(); 746 if (section_list) 747 { 748 SectionSP section_sp (section_list->FindSectionByType(sect_type, true)); 749 if (section_sp) 750 { 751 // See if we memory mapped the DWARF segment? 752 if (m_dwarf_data.GetByteSize()) 753 { 754 data.SetData(m_dwarf_data, section_sp->GetOffset (), section_sp->GetFileSize()); 755 } 756 else 757 { 758 if (m_obj_file->ReadSectionData (section_sp.get(), data) == 0) 759 data.Clear(); 760 } 761 } 762 } 763 } 764 return data; 765 } 766 767 const DWARFDataExtractor& 768 SymbolFileDWARF::get_debug_abbrev_data() 769 { 770 return GetCachedSectionData (flagsGotDebugAbbrevData, eSectionTypeDWARFDebugAbbrev, m_data_debug_abbrev); 771 } 772 773 const DWARFDataExtractor& 774 SymbolFileDWARF::get_debug_aranges_data() 775 { 776 return GetCachedSectionData (flagsGotDebugArangesData, eSectionTypeDWARFDebugAranges, m_data_debug_aranges); 777 } 778 779 const DWARFDataExtractor& 780 SymbolFileDWARF::get_debug_frame_data() 781 { 782 return GetCachedSectionData (flagsGotDebugFrameData, eSectionTypeDWARFDebugFrame, m_data_debug_frame); 783 } 784 785 const DWARFDataExtractor& 786 SymbolFileDWARF::get_debug_info_data() 787 { 788 return GetCachedSectionData (flagsGotDebugInfoData, eSectionTypeDWARFDebugInfo, m_data_debug_info); 789 } 790 791 const DWARFDataExtractor& 792 SymbolFileDWARF::get_debug_line_data() 793 { 794 return GetCachedSectionData (flagsGotDebugLineData, eSectionTypeDWARFDebugLine, m_data_debug_line); 795 } 796 797 const DWARFDataExtractor& 798 SymbolFileDWARF::get_debug_loc_data() 799 { 800 return GetCachedSectionData (flagsGotDebugLocData, eSectionTypeDWARFDebugLoc, m_data_debug_loc); 801 } 802 803 const DWARFDataExtractor& 804 SymbolFileDWARF::get_debug_ranges_data() 805 { 806 return GetCachedSectionData (flagsGotDebugRangesData, eSectionTypeDWARFDebugRanges, m_data_debug_ranges); 807 } 808 809 const DWARFDataExtractor& 810 SymbolFileDWARF::get_debug_str_data() 811 { 812 return GetCachedSectionData (flagsGotDebugStrData, eSectionTypeDWARFDebugStr, m_data_debug_str); 813 } 814 815 const DWARFDataExtractor& 816 SymbolFileDWARF::get_apple_names_data() 817 { 818 return GetCachedSectionData (flagsGotAppleNamesData, eSectionTypeDWARFAppleNames, m_data_apple_names); 819 } 820 821 const DWARFDataExtractor& 822 SymbolFileDWARF::get_apple_types_data() 823 { 824 return GetCachedSectionData (flagsGotAppleTypesData, eSectionTypeDWARFAppleTypes, m_data_apple_types); 825 } 826 827 const DWARFDataExtractor& 828 SymbolFileDWARF::get_apple_namespaces_data() 829 { 830 return GetCachedSectionData (flagsGotAppleNamespacesData, eSectionTypeDWARFAppleNamespaces, m_data_apple_namespaces); 831 } 832 833 const DWARFDataExtractor& 834 SymbolFileDWARF::get_apple_objc_data() 835 { 836 return GetCachedSectionData (flagsGotAppleObjCData, eSectionTypeDWARFAppleObjC, m_data_apple_objc); 837 } 838 839 840 DWARFDebugAbbrev* 841 SymbolFileDWARF::DebugAbbrev() 842 { 843 if (m_abbr.get() == NULL) 844 { 845 const DWARFDataExtractor &debug_abbrev_data = get_debug_abbrev_data(); 846 if (debug_abbrev_data.GetByteSize() > 0) 847 { 848 m_abbr.reset(new DWARFDebugAbbrev()); 849 if (m_abbr.get()) 850 m_abbr->Parse(debug_abbrev_data); 851 } 852 } 853 return m_abbr.get(); 854 } 855 856 const DWARFDebugAbbrev* 857 SymbolFileDWARF::DebugAbbrev() const 858 { 859 return m_abbr.get(); 860 } 861 862 863 DWARFDebugInfo* 864 SymbolFileDWARF::DebugInfo() 865 { 866 if (m_info.get() == NULL) 867 { 868 Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", 869 __PRETTY_FUNCTION__, static_cast<void*>(this)); 870 if (get_debug_info_data().GetByteSize() > 0) 871 { 872 m_info.reset(new DWARFDebugInfo()); 873 if (m_info.get()) 874 { 875 m_info->SetDwarfData(this); 876 } 877 } 878 } 879 return m_info.get(); 880 } 881 882 const DWARFDebugInfo* 883 SymbolFileDWARF::DebugInfo() const 884 { 885 return m_info.get(); 886 } 887 888 DWARFCompileUnit* 889 SymbolFileDWARF::GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit) 890 { 891 DWARFDebugInfo* info = DebugInfo(); 892 if (info) 893 { 894 if (GetDebugMapSymfile ()) 895 { 896 // The debug map symbol file made the compile units for this DWARF 897 // file which is .o file with DWARF in it, and we should have 898 // only 1 compile unit which is at offset zero in the DWARF. 899 // TODO: modify to support LTO .o files where each .o file might 900 // have multiple DW_TAG_compile_unit tags. 901 902 DWARFCompileUnit *dwarf_cu = info->GetCompileUnit(0).get(); 903 if (dwarf_cu && dwarf_cu->GetUserData() == NULL) 904 dwarf_cu->SetUserData(comp_unit); 905 return dwarf_cu; 906 } 907 else 908 { 909 // Just a normal DWARF file whose user ID for the compile unit is 910 // the DWARF offset itself 911 912 DWARFCompileUnit *dwarf_cu = info->GetCompileUnit((dw_offset_t)comp_unit->GetID()).get(); 913 if (dwarf_cu && dwarf_cu->GetUserData() == NULL) 914 dwarf_cu->SetUserData(comp_unit); 915 return dwarf_cu; 916 917 } 918 } 919 return NULL; 920 } 921 922 923 DWARFDebugRanges* 924 SymbolFileDWARF::DebugRanges() 925 { 926 if (m_ranges.get() == NULL) 927 { 928 Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", 929 __PRETTY_FUNCTION__, static_cast<void*>(this)); 930 if (get_debug_ranges_data().GetByteSize() > 0) 931 { 932 m_ranges.reset(new DWARFDebugRanges()); 933 if (m_ranges.get()) 934 m_ranges->Extract(this); 935 } 936 } 937 return m_ranges.get(); 938 } 939 940 const DWARFDebugRanges* 941 SymbolFileDWARF::DebugRanges() const 942 { 943 return m_ranges.get(); 944 } 945 946 lldb::CompUnitSP 947 SymbolFileDWARF::ParseCompileUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx) 948 { 949 CompUnitSP cu_sp; 950 if (dwarf_cu) 951 { 952 CompileUnit *comp_unit = (CompileUnit*)dwarf_cu->GetUserData(); 953 if (comp_unit) 954 { 955 // We already parsed this compile unit, had out a shared pointer to it 956 cu_sp = comp_unit->shared_from_this(); 957 } 958 else 959 { 960 if (GetDebugMapSymfile ()) 961 { 962 // Let the debug map create the compile unit 963 cu_sp = m_debug_map_symfile->GetCompileUnit(this); 964 dwarf_cu->SetUserData(cu_sp.get()); 965 } 966 else 967 { 968 ModuleSP module_sp (m_obj_file->GetModule()); 969 if (module_sp) 970 { 971 const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly (); 972 if (cu_die) 973 { 974 const char * cu_die_name = cu_die->GetName(this, dwarf_cu); 975 const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL); 976 LanguageType cu_language = (LanguageType)cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0); 977 if (cu_die_name) 978 { 979 std::string ramapped_file; 980 FileSpec cu_file_spec; 981 982 if (cu_die_name[0] == '/' || cu_comp_dir == NULL || cu_comp_dir[0] == '\0') 983 { 984 // If we have a full path to the compile unit, we don't need to resolve 985 // the file. This can be expensive e.g. when the source files are NFS mounted. 986 if (module_sp->RemapSourceFile(cu_die_name, ramapped_file)) 987 cu_file_spec.SetFile (ramapped_file.c_str(), false); 988 else 989 cu_file_spec.SetFile (cu_die_name, false); 990 } 991 else 992 { 993 // DWARF2/3 suggests the form hostname:pathname for compilation directory. 994 // Remove the host part if present. 995 cu_comp_dir = removeHostnameFromPathname(cu_comp_dir); 996 std::string fullpath(cu_comp_dir); 997 998 if (*fullpath.rbegin() != '/') 999 fullpath += '/'; 1000 fullpath += cu_die_name; 1001 if (module_sp->RemapSourceFile (fullpath.c_str(), ramapped_file)) 1002 cu_file_spec.SetFile (ramapped_file.c_str(), false); 1003 else 1004 cu_file_spec.SetFile (fullpath.c_str(), false); 1005 } 1006 1007 cu_sp.reset(new CompileUnit (module_sp, 1008 dwarf_cu, 1009 cu_file_spec, 1010 MakeUserID(dwarf_cu->GetOffset()), 1011 cu_language)); 1012 if (cu_sp) 1013 { 1014 dwarf_cu->SetUserData(cu_sp.get()); 1015 1016 // Figure out the compile unit index if we weren't given one 1017 if (cu_idx == UINT32_MAX) 1018 DebugInfo()->GetCompileUnit(dwarf_cu->GetOffset(), &cu_idx); 1019 1020 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp); 1021 } 1022 } 1023 } 1024 } 1025 } 1026 } 1027 } 1028 return cu_sp; 1029 } 1030 1031 uint32_t 1032 SymbolFileDWARF::GetNumCompileUnits() 1033 { 1034 DWARFDebugInfo* info = DebugInfo(); 1035 if (info) 1036 return info->GetNumCompileUnits(); 1037 return 0; 1038 } 1039 1040 CompUnitSP 1041 SymbolFileDWARF::ParseCompileUnitAtIndex(uint32_t cu_idx) 1042 { 1043 CompUnitSP cu_sp; 1044 DWARFDebugInfo* info = DebugInfo(); 1045 if (info) 1046 { 1047 DWARFCompileUnit* dwarf_cu = info->GetCompileUnitAtIndex(cu_idx); 1048 if (dwarf_cu) 1049 cu_sp = ParseCompileUnit(dwarf_cu, cu_idx); 1050 } 1051 return cu_sp; 1052 } 1053 1054 Function * 1055 SymbolFileDWARF::ParseCompileUnitFunction (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die) 1056 { 1057 DWARFDebugRanges::RangeList func_ranges; 1058 const char *name = NULL; 1059 const char *mangled = NULL; 1060 int decl_file = 0; 1061 int decl_line = 0; 1062 int decl_column = 0; 1063 int call_file = 0; 1064 int call_line = 0; 1065 int call_column = 0; 1066 DWARFExpression frame_base; 1067 1068 assert (die->Tag() == DW_TAG_subprogram); 1069 1070 if (die->Tag() != DW_TAG_subprogram) 1071 return NULL; 1072 1073 if (die->GetDIENamesAndRanges (this, 1074 dwarf_cu, 1075 name, 1076 mangled, 1077 func_ranges, 1078 decl_file, 1079 decl_line, 1080 decl_column, 1081 call_file, 1082 call_line, 1083 call_column, 1084 &frame_base)) 1085 { 1086 // Union of all ranges in the function DIE (if the function is discontiguous) 1087 AddressRange func_range; 1088 lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase (0); 1089 lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd (0); 1090 if (lowest_func_addr != LLDB_INVALID_ADDRESS && lowest_func_addr <= highest_func_addr) 1091 { 1092 ModuleSP module_sp (m_obj_file->GetModule()); 1093 func_range.GetBaseAddress().ResolveAddressUsingFileSections (lowest_func_addr, module_sp->GetSectionList()); 1094 if (func_range.GetBaseAddress().IsValid()) 1095 func_range.SetByteSize(highest_func_addr - lowest_func_addr); 1096 } 1097 1098 if (func_range.GetBaseAddress().IsValid()) 1099 { 1100 Mangled func_name; 1101 if (mangled) 1102 func_name.SetValue(ConstString(mangled), true); 1103 else if (die->GetParent()->Tag() == DW_TAG_compile_unit && 1104 LanguageRuntime::LanguageIsCPlusPlus(dwarf_cu->GetLanguageType()) && 1105 strcmp(name, "main") != 0) 1106 { 1107 // If the mangled name is not present in the DWARF, generate the demangled name 1108 // using the decl context. We skip if the function is "main" as its name is 1109 // never mangled. 1110 bool is_static = false; 1111 bool is_variadic = false; 1112 unsigned type_quals = 0; 1113 std::vector<ClangASTType> param_types; 1114 std::vector<clang::ParmVarDecl*> param_decls; 1115 const DWARFDebugInfoEntry *decl_ctx_die = NULL; 1116 DWARFDeclContext decl_ctx; 1117 StreamString sstr; 1118 1119 die->GetDWARFDeclContext(this, dwarf_cu, decl_ctx); 1120 sstr << decl_ctx.GetQualifiedName(); 1121 1122 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE(dwarf_cu, 1123 die, 1124 &decl_ctx_die); 1125 ParseChildParameters(sc, 1126 containing_decl_ctx, 1127 dwarf_cu, 1128 die, 1129 true, 1130 is_static, 1131 is_variadic, 1132 param_types, 1133 param_decls, 1134 type_quals); 1135 sstr << "("; 1136 for (size_t i = 0; i < param_types.size(); i++) 1137 { 1138 if (i > 0) 1139 sstr << ", "; 1140 sstr << param_types[i].GetTypeName(); 1141 } 1142 if (is_variadic) 1143 sstr << ", ..."; 1144 sstr << ")"; 1145 if (type_quals & clang::Qualifiers::Const) 1146 sstr << " const"; 1147 1148 func_name.SetValue(ConstString(sstr.GetData()), false); 1149 } 1150 else 1151 func_name.SetValue(ConstString(name), false); 1152 1153 FunctionSP func_sp; 1154 std::unique_ptr<Declaration> decl_ap; 1155 if (decl_file != 0 || decl_line != 0 || decl_column != 0) 1156 decl_ap.reset(new Declaration (sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), 1157 decl_line, 1158 decl_column)); 1159 1160 // Supply the type _only_ if it has already been parsed 1161 Type *func_type = m_die_to_type.lookup (die); 1162 1163 assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED); 1164 1165 if (FixupAddress (func_range.GetBaseAddress())) 1166 { 1167 const user_id_t func_user_id = MakeUserID(die->GetOffset()); 1168 func_sp.reset(new Function (sc.comp_unit, 1169 MakeUserID(func_user_id), // UserID is the DIE offset 1170 MakeUserID(func_user_id), 1171 func_name, 1172 func_type, 1173 func_range)); // first address range 1174 1175 if (func_sp.get() != NULL) 1176 { 1177 if (frame_base.IsValid()) 1178 func_sp->GetFrameBaseExpression() = frame_base; 1179 sc.comp_unit->AddFunction(func_sp); 1180 return func_sp.get(); 1181 } 1182 } 1183 } 1184 } 1185 return NULL; 1186 } 1187 1188 bool 1189 SymbolFileDWARF::FixupAddress (Address &addr) 1190 { 1191 SymbolFileDWARFDebugMap * debug_map_symfile = GetDebugMapSymfile (); 1192 if (debug_map_symfile) 1193 { 1194 return debug_map_symfile->LinkOSOAddress(addr); 1195 } 1196 // This is a normal DWARF file, no address fixups need to happen 1197 return true; 1198 } 1199 lldb::LanguageType 1200 SymbolFileDWARF::ParseCompileUnitLanguage (const SymbolContext& sc) 1201 { 1202 assert (sc.comp_unit); 1203 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 1204 if (dwarf_cu) 1205 { 1206 const DWARFDebugInfoEntry *die = dwarf_cu->GetCompileUnitDIEOnly(); 1207 if (die) 1208 { 1209 const uint32_t language = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0); 1210 if (language) 1211 return (lldb::LanguageType)language; 1212 } 1213 } 1214 return eLanguageTypeUnknown; 1215 } 1216 1217 size_t 1218 SymbolFileDWARF::ParseCompileUnitFunctions(const SymbolContext &sc) 1219 { 1220 assert (sc.comp_unit); 1221 size_t functions_added = 0; 1222 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 1223 if (dwarf_cu) 1224 { 1225 DWARFDIECollection function_dies; 1226 const size_t num_functions = dwarf_cu->AppendDIEsWithTag (DW_TAG_subprogram, function_dies); 1227 size_t func_idx; 1228 for (func_idx = 0; func_idx < num_functions; ++func_idx) 1229 { 1230 const DWARFDebugInfoEntry *die = function_dies.GetDIEPtrAtIndex(func_idx); 1231 if (sc.comp_unit->FindFunctionByUID (MakeUserID(die->GetOffset())).get() == NULL) 1232 { 1233 if (ParseCompileUnitFunction(sc, dwarf_cu, die)) 1234 ++functions_added; 1235 } 1236 } 1237 //FixupTypes(); 1238 } 1239 return functions_added; 1240 } 1241 1242 bool 1243 SymbolFileDWARF::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList& support_files) 1244 { 1245 assert (sc.comp_unit); 1246 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 1247 if (dwarf_cu) 1248 { 1249 const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly(); 1250 1251 if (cu_die) 1252 { 1253 const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL); 1254 1255 // DWARF2/3 suggests the form hostname:pathname for compilation directory. 1256 // Remove the host part if present. 1257 cu_comp_dir = removeHostnameFromPathname(cu_comp_dir); 1258 1259 dw_offset_t stmt_list = cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET); 1260 1261 // All file indexes in DWARF are one based and a file of index zero is 1262 // supposed to be the compile unit itself. 1263 support_files.Append (*sc.comp_unit); 1264 1265 return DWARFDebugLine::ParseSupportFiles(sc.comp_unit->GetModule(), get_debug_line_data(), cu_comp_dir, stmt_list, support_files); 1266 } 1267 } 1268 return false; 1269 } 1270 1271 bool 1272 SymbolFileDWARF::ParseImportedModules (const lldb_private::SymbolContext &sc, std::vector<lldb_private::ConstString> &imported_modules) 1273 { 1274 assert (sc.comp_unit); 1275 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 1276 if (dwarf_cu) 1277 { 1278 if (ClangModulesDeclVendor::LanguageSupportsClangModules(sc.comp_unit->GetLanguage())) 1279 { 1280 UpdateExternalModuleListIfNeeded(); 1281 for (const std::pair<uint64_t, const ClangModuleInfo> &external_type_module : m_external_type_modules) 1282 { 1283 imported_modules.push_back(external_type_module.second.m_name); 1284 } 1285 } 1286 } 1287 return false; 1288 } 1289 1290 struct ParseDWARFLineTableCallbackInfo 1291 { 1292 LineTable* line_table; 1293 std::unique_ptr<LineSequence> sequence_ap; 1294 }; 1295 1296 //---------------------------------------------------------------------- 1297 // ParseStatementTableCallback 1298 //---------------------------------------------------------------------- 1299 static void 1300 ParseDWARFLineTableCallback(dw_offset_t offset, const DWARFDebugLine::State& state, void* userData) 1301 { 1302 if (state.row == DWARFDebugLine::State::StartParsingLineTable) 1303 { 1304 // Just started parsing the line table 1305 } 1306 else if (state.row == DWARFDebugLine::State::DoneParsingLineTable) 1307 { 1308 // Done parsing line table, nothing to do for the cleanup 1309 } 1310 else 1311 { 1312 ParseDWARFLineTableCallbackInfo* info = (ParseDWARFLineTableCallbackInfo*)userData; 1313 LineTable* line_table = info->line_table; 1314 1315 // If this is our first time here, we need to create a 1316 // sequence container. 1317 if (!info->sequence_ap.get()) 1318 { 1319 info->sequence_ap.reset(line_table->CreateLineSequenceContainer()); 1320 assert(info->sequence_ap.get()); 1321 } 1322 line_table->AppendLineEntryToSequence (info->sequence_ap.get(), 1323 state.address, 1324 state.line, 1325 state.column, 1326 state.file, 1327 state.is_stmt, 1328 state.basic_block, 1329 state.prologue_end, 1330 state.epilogue_begin, 1331 state.end_sequence); 1332 if (state.end_sequence) 1333 { 1334 // First, put the current sequence into the line table. 1335 line_table->InsertSequence(info->sequence_ap.get()); 1336 // Then, empty it to prepare for the next sequence. 1337 info->sequence_ap->Clear(); 1338 } 1339 } 1340 } 1341 1342 bool 1343 SymbolFileDWARF::ParseCompileUnitLineTable (const SymbolContext &sc) 1344 { 1345 assert (sc.comp_unit); 1346 if (sc.comp_unit->GetLineTable() != NULL) 1347 return true; 1348 1349 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 1350 if (dwarf_cu) 1351 { 1352 const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->GetCompileUnitDIEOnly(); 1353 if (dwarf_cu_die) 1354 { 1355 const dw_offset_t cu_line_offset = dwarf_cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET); 1356 if (cu_line_offset != DW_INVALID_OFFSET) 1357 { 1358 std::unique_ptr<LineTable> line_table_ap(new LineTable(sc.comp_unit)); 1359 if (line_table_ap.get()) 1360 { 1361 ParseDWARFLineTableCallbackInfo info; 1362 info.line_table = line_table_ap.get(); 1363 lldb::offset_t offset = cu_line_offset; 1364 DWARFDebugLine::ParseStatementTable(get_debug_line_data(), &offset, ParseDWARFLineTableCallback, &info); 1365 if (m_debug_map_symfile) 1366 { 1367 // We have an object file that has a line table with addresses 1368 // that are not linked. We need to link the line table and convert 1369 // the addresses that are relative to the .o file into addresses 1370 // for the main executable. 1371 sc.comp_unit->SetLineTable (m_debug_map_symfile->LinkOSOLineTable (this, line_table_ap.get())); 1372 } 1373 else 1374 { 1375 sc.comp_unit->SetLineTable(line_table_ap.release()); 1376 return true; 1377 } 1378 } 1379 } 1380 } 1381 } 1382 return false; 1383 } 1384 1385 size_t 1386 SymbolFileDWARF::ParseFunctionBlocks 1387 ( 1388 const SymbolContext& sc, 1389 Block *parent_block, 1390 DWARFCompileUnit* dwarf_cu, 1391 const DWARFDebugInfoEntry *die, 1392 addr_t subprogram_low_pc, 1393 uint32_t depth 1394 ) 1395 { 1396 size_t blocks_added = 0; 1397 while (die != NULL) 1398 { 1399 dw_tag_t tag = die->Tag(); 1400 1401 switch (tag) 1402 { 1403 case DW_TAG_inlined_subroutine: 1404 case DW_TAG_subprogram: 1405 case DW_TAG_lexical_block: 1406 { 1407 Block *block = NULL; 1408 if (tag == DW_TAG_subprogram) 1409 { 1410 // Skip any DW_TAG_subprogram DIEs that are inside 1411 // of a normal or inlined functions. These will be 1412 // parsed on their own as separate entities. 1413 1414 if (depth > 0) 1415 break; 1416 1417 block = parent_block; 1418 } 1419 else 1420 { 1421 BlockSP block_sp(new Block (MakeUserID(die->GetOffset()))); 1422 parent_block->AddChild(block_sp); 1423 block = block_sp.get(); 1424 } 1425 DWARFDebugRanges::RangeList ranges; 1426 const char *name = NULL; 1427 const char *mangled_name = NULL; 1428 1429 int decl_file = 0; 1430 int decl_line = 0; 1431 int decl_column = 0; 1432 int call_file = 0; 1433 int call_line = 0; 1434 int call_column = 0; 1435 if (die->GetDIENamesAndRanges (this, 1436 dwarf_cu, 1437 name, 1438 mangled_name, 1439 ranges, 1440 decl_file, decl_line, decl_column, 1441 call_file, call_line, call_column)) 1442 { 1443 if (tag == DW_TAG_subprogram) 1444 { 1445 assert (subprogram_low_pc == LLDB_INVALID_ADDRESS); 1446 subprogram_low_pc = ranges.GetMinRangeBase(0); 1447 } 1448 else if (tag == DW_TAG_inlined_subroutine) 1449 { 1450 // We get called here for inlined subroutines in two ways. 1451 // The first time is when we are making the Function object 1452 // for this inlined concrete instance. Since we're creating a top level block at 1453 // here, the subprogram_low_pc will be LLDB_INVALID_ADDRESS. So we need to 1454 // adjust the containing address. 1455 // The second time is when we are parsing the blocks inside the function that contains 1456 // the inlined concrete instance. Since these will be blocks inside the containing "real" 1457 // function the offset will be for that function. 1458 if (subprogram_low_pc == LLDB_INVALID_ADDRESS) 1459 { 1460 subprogram_low_pc = ranges.GetMinRangeBase(0); 1461 } 1462 } 1463 1464 const size_t num_ranges = ranges.GetSize(); 1465 for (size_t i = 0; i<num_ranges; ++i) 1466 { 1467 const DWARFDebugRanges::Range &range = ranges.GetEntryRef (i); 1468 const addr_t range_base = range.GetRangeBase(); 1469 if (range_base >= subprogram_low_pc) 1470 block->AddRange(Block::Range (range_base - subprogram_low_pc, range.GetByteSize())); 1471 else 1472 { 1473 GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": adding range [0x%" PRIx64 "-0x%" PRIx64 ") which has a base that is less than the function's low PC 0x%" PRIx64 ". Please file a bug and attach the file at the start of this error message", 1474 block->GetID(), 1475 range_base, 1476 range.GetRangeEnd(), 1477 subprogram_low_pc); 1478 } 1479 } 1480 block->FinalizeRanges (); 1481 1482 if (tag != DW_TAG_subprogram && (name != NULL || mangled_name != NULL)) 1483 { 1484 std::unique_ptr<Declaration> decl_ap; 1485 if (decl_file != 0 || decl_line != 0 || decl_column != 0) 1486 decl_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), 1487 decl_line, decl_column)); 1488 1489 std::unique_ptr<Declaration> call_ap; 1490 if (call_file != 0 || call_line != 0 || call_column != 0) 1491 call_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(call_file), 1492 call_line, call_column)); 1493 1494 block->SetInlinedFunctionInfo (name, mangled_name, decl_ap.get(), call_ap.get()); 1495 } 1496 1497 ++blocks_added; 1498 1499 if (die->HasChildren()) 1500 { 1501 blocks_added += ParseFunctionBlocks (sc, 1502 block, 1503 dwarf_cu, 1504 die->GetFirstChild(), 1505 subprogram_low_pc, 1506 depth + 1); 1507 } 1508 } 1509 } 1510 break; 1511 default: 1512 break; 1513 } 1514 1515 // Only parse siblings of the block if we are not at depth zero. A depth 1516 // of zero indicates we are currently parsing the top level 1517 // DW_TAG_subprogram DIE 1518 1519 if (depth == 0) 1520 die = NULL; 1521 else 1522 die = die->GetSibling(); 1523 } 1524 return blocks_added; 1525 } 1526 1527 bool 1528 SymbolFileDWARF::ParseTemplateDIE (DWARFCompileUnit* dwarf_cu, 1529 const DWARFDebugInfoEntry *die, 1530 ClangASTContext::TemplateParameterInfos &template_param_infos) 1531 { 1532 const dw_tag_t tag = die->Tag(); 1533 1534 switch (tag) 1535 { 1536 case DW_TAG_template_type_parameter: 1537 case DW_TAG_template_value_parameter: 1538 { 1539 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64()); 1540 1541 DWARFDebugInfoEntry::Attributes attributes; 1542 const size_t num_attributes = die->GetAttributes (this, 1543 dwarf_cu, 1544 fixed_form_sizes, 1545 attributes); 1546 const char *name = NULL; 1547 Type *lldb_type = NULL; 1548 ClangASTType clang_type; 1549 uint64_t uval64 = 0; 1550 bool uval64_valid = false; 1551 if (num_attributes > 0) 1552 { 1553 DWARFFormValue form_value; 1554 for (size_t i=0; i<num_attributes; ++i) 1555 { 1556 const dw_attr_t attr = attributes.AttributeAtIndex(i); 1557 1558 switch (attr) 1559 { 1560 case DW_AT_name: 1561 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1562 name = form_value.AsCString(&get_debug_str_data()); 1563 break; 1564 1565 case DW_AT_type: 1566 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1567 { 1568 const dw_offset_t type_die_offset = form_value.Reference(); 1569 lldb_type = ResolveTypeUID(type_die_offset); 1570 if (lldb_type) 1571 clang_type = lldb_type->GetClangForwardType(); 1572 } 1573 break; 1574 1575 case DW_AT_const_value: 1576 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1577 { 1578 uval64_valid = true; 1579 uval64 = form_value.Unsigned(); 1580 } 1581 break; 1582 default: 1583 break; 1584 } 1585 } 1586 1587 clang::ASTContext *ast = GetClangASTContext().getASTContext(); 1588 if (!clang_type) 1589 clang_type = GetClangASTContext().GetBasicType(eBasicTypeVoid); 1590 1591 if (clang_type) 1592 { 1593 bool is_signed = false; 1594 if (name && name[0]) 1595 template_param_infos.names.push_back(name); 1596 else 1597 template_param_infos.names.push_back(NULL); 1598 1599 if (tag == DW_TAG_template_value_parameter && 1600 lldb_type != NULL && 1601 clang_type.IsIntegerType (is_signed) && 1602 uval64_valid) 1603 { 1604 llvm::APInt apint (lldb_type->GetByteSize() * 8, uval64, is_signed); 1605 template_param_infos.args.push_back (clang::TemplateArgument (*ast, 1606 llvm::APSInt(apint), 1607 clang_type.GetQualType())); 1608 } 1609 else 1610 { 1611 template_param_infos.args.push_back (clang::TemplateArgument (clang_type.GetQualType())); 1612 } 1613 } 1614 else 1615 { 1616 return false; 1617 } 1618 1619 } 1620 } 1621 return true; 1622 1623 default: 1624 break; 1625 } 1626 return false; 1627 } 1628 1629 bool 1630 SymbolFileDWARF::ParseTemplateParameterInfos (DWARFCompileUnit* dwarf_cu, 1631 const DWARFDebugInfoEntry *parent_die, 1632 ClangASTContext::TemplateParameterInfos &template_param_infos) 1633 { 1634 1635 if (parent_die == NULL) 1636 return false; 1637 1638 Args template_parameter_names; 1639 for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild(); 1640 die != NULL; 1641 die = die->GetSibling()) 1642 { 1643 const dw_tag_t tag = die->Tag(); 1644 1645 switch (tag) 1646 { 1647 case DW_TAG_template_type_parameter: 1648 case DW_TAG_template_value_parameter: 1649 ParseTemplateDIE (dwarf_cu, die, template_param_infos); 1650 break; 1651 1652 default: 1653 break; 1654 } 1655 } 1656 if (template_param_infos.args.empty()) 1657 return false; 1658 return template_param_infos.args.size() == template_param_infos.names.size(); 1659 } 1660 1661 clang::ClassTemplateDecl * 1662 SymbolFileDWARF::ParseClassTemplateDecl (clang::DeclContext *decl_ctx, 1663 lldb::AccessType access_type, 1664 const char *parent_name, 1665 int tag_decl_kind, 1666 const ClangASTContext::TemplateParameterInfos &template_param_infos) 1667 { 1668 if (template_param_infos.IsValid()) 1669 { 1670 std::string template_basename(parent_name); 1671 template_basename.erase (template_basename.find('<')); 1672 ClangASTContext &ast = GetClangASTContext(); 1673 1674 return ast.CreateClassTemplateDecl (decl_ctx, 1675 access_type, 1676 template_basename.c_str(), 1677 tag_decl_kind, 1678 template_param_infos); 1679 } 1680 return NULL; 1681 } 1682 1683 class SymbolFileDWARF::DelayedAddObjCClassProperty 1684 { 1685 public: 1686 DelayedAddObjCClassProperty 1687 ( 1688 const ClangASTType &class_opaque_type, 1689 const char *property_name, 1690 const ClangASTType &property_opaque_type, // The property type is only required if you don't have an ivar decl 1691 clang::ObjCIvarDecl *ivar_decl, 1692 const char *property_setter_name, 1693 const char *property_getter_name, 1694 uint32_t property_attributes, 1695 const ClangASTMetadata *metadata 1696 ) : 1697 m_class_opaque_type (class_opaque_type), 1698 m_property_name (property_name), 1699 m_property_opaque_type (property_opaque_type), 1700 m_ivar_decl (ivar_decl), 1701 m_property_setter_name (property_setter_name), 1702 m_property_getter_name (property_getter_name), 1703 m_property_attributes (property_attributes) 1704 { 1705 if (metadata != NULL) 1706 { 1707 m_metadata_ap.reset(new ClangASTMetadata()); 1708 *m_metadata_ap = *metadata; 1709 } 1710 } 1711 1712 DelayedAddObjCClassProperty (const DelayedAddObjCClassProperty &rhs) 1713 { 1714 *this = rhs; 1715 } 1716 1717 DelayedAddObjCClassProperty& operator= (const DelayedAddObjCClassProperty &rhs) 1718 { 1719 m_class_opaque_type = rhs.m_class_opaque_type; 1720 m_property_name = rhs.m_property_name; 1721 m_property_opaque_type = rhs.m_property_opaque_type; 1722 m_ivar_decl = rhs.m_ivar_decl; 1723 m_property_setter_name = rhs.m_property_setter_name; 1724 m_property_getter_name = rhs.m_property_getter_name; 1725 m_property_attributes = rhs.m_property_attributes; 1726 1727 if (rhs.m_metadata_ap.get()) 1728 { 1729 m_metadata_ap.reset (new ClangASTMetadata()); 1730 *m_metadata_ap = *rhs.m_metadata_ap; 1731 } 1732 return *this; 1733 } 1734 1735 bool 1736 Finalize() 1737 { 1738 return m_class_opaque_type.AddObjCClassProperty (m_property_name, 1739 m_property_opaque_type, 1740 m_ivar_decl, 1741 m_property_setter_name, 1742 m_property_getter_name, 1743 m_property_attributes, 1744 m_metadata_ap.get()); 1745 } 1746 private: 1747 ClangASTType m_class_opaque_type; 1748 const char *m_property_name; 1749 ClangASTType m_property_opaque_type; 1750 clang::ObjCIvarDecl *m_ivar_decl; 1751 const char *m_property_setter_name; 1752 const char *m_property_getter_name; 1753 uint32_t m_property_attributes; 1754 std::unique_ptr<ClangASTMetadata> m_metadata_ap; 1755 }; 1756 1757 struct BitfieldInfo 1758 { 1759 uint64_t bit_size; 1760 uint64_t bit_offset; 1761 1762 BitfieldInfo () : 1763 bit_size (LLDB_INVALID_ADDRESS), 1764 bit_offset (LLDB_INVALID_ADDRESS) 1765 { 1766 } 1767 1768 void 1769 Clear() 1770 { 1771 bit_size = LLDB_INVALID_ADDRESS; 1772 bit_offset = LLDB_INVALID_ADDRESS; 1773 } 1774 1775 bool IsValid () 1776 { 1777 return (bit_size != LLDB_INVALID_ADDRESS) && 1778 (bit_offset != LLDB_INVALID_ADDRESS); 1779 } 1780 }; 1781 1782 1783 bool 1784 SymbolFileDWARF::ClassOrStructIsVirtual (DWARFCompileUnit* dwarf_cu, 1785 const DWARFDebugInfoEntry *parent_die) 1786 { 1787 if (parent_die) 1788 { 1789 for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 1790 { 1791 dw_tag_t tag = die->Tag(); 1792 bool check_virtuality = false; 1793 switch (tag) 1794 { 1795 case DW_TAG_inheritance: 1796 case DW_TAG_subprogram: 1797 check_virtuality = true; 1798 break; 1799 default: 1800 break; 1801 } 1802 if (check_virtuality) 1803 { 1804 if (die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_virtuality, 0) != 0) 1805 return true; 1806 } 1807 } 1808 } 1809 return false; 1810 } 1811 1812 size_t 1813 SymbolFileDWARF::ParseChildMembers 1814 ( 1815 const SymbolContext& sc, 1816 DWARFCompileUnit* dwarf_cu, 1817 const DWARFDebugInfoEntry *parent_die, 1818 ClangASTType &class_clang_type, 1819 const LanguageType class_language, 1820 std::vector<clang::CXXBaseSpecifier *>& base_classes, 1821 std::vector<int>& member_accessibilities, 1822 DWARFDIECollection& member_function_dies, 1823 DelayedPropertyList& delayed_properties, 1824 AccessType& default_accessibility, 1825 bool &is_a_class, 1826 LayoutInfo &layout_info 1827 ) 1828 { 1829 if (parent_die == NULL) 1830 return 0; 1831 1832 size_t count = 0; 1833 const DWARFDebugInfoEntry *die; 1834 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64()); 1835 uint32_t member_idx = 0; 1836 BitfieldInfo last_field_info; 1837 ModuleSP module = GetObjectFile()->GetModule(); 1838 1839 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 1840 { 1841 dw_tag_t tag = die->Tag(); 1842 1843 switch (tag) 1844 { 1845 case DW_TAG_member: 1846 case DW_TAG_APPLE_property: 1847 { 1848 DWARFDebugInfoEntry::Attributes attributes; 1849 const size_t num_attributes = die->GetAttributes (this, 1850 dwarf_cu, 1851 fixed_form_sizes, 1852 attributes); 1853 if (num_attributes > 0) 1854 { 1855 Declaration decl; 1856 //DWARFExpression location; 1857 const char *name = NULL; 1858 const char *prop_name = NULL; 1859 const char *prop_getter_name = NULL; 1860 const char *prop_setter_name = NULL; 1861 uint32_t prop_attributes = 0; 1862 1863 1864 bool is_artificial = false; 1865 lldb::user_id_t encoding_uid = LLDB_INVALID_UID; 1866 AccessType accessibility = eAccessNone; 1867 uint32_t member_byte_offset = UINT32_MAX; 1868 size_t byte_size = 0; 1869 size_t bit_offset = 0; 1870 size_t bit_size = 0; 1871 bool is_external = false; // On DW_TAG_members, this means the member is static 1872 uint32_t i; 1873 for (i=0; i<num_attributes && !is_artificial; ++i) 1874 { 1875 const dw_attr_t attr = attributes.AttributeAtIndex(i); 1876 DWARFFormValue form_value; 1877 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1878 { 1879 switch (attr) 1880 { 1881 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 1882 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 1883 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 1884 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; 1885 case DW_AT_type: encoding_uid = form_value.Reference(); break; 1886 case DW_AT_bit_offset: bit_offset = form_value.Unsigned(); break; 1887 case DW_AT_bit_size: bit_size = form_value.Unsigned(); break; 1888 case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; 1889 case DW_AT_data_member_location: 1890 if (form_value.BlockData()) 1891 { 1892 Value initialValue(0); 1893 Value memberOffset(0); 1894 const DWARFDataExtractor& debug_info_data = get_debug_info_data(); 1895 uint32_t block_length = form_value.Unsigned(); 1896 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 1897 if (DWARFExpression::Evaluate(NULL, // ExecutionContext * 1898 NULL, // ClangExpressionVariableList * 1899 NULL, // ClangExpressionDeclMap * 1900 NULL, // RegisterContext * 1901 module, 1902 debug_info_data, 1903 block_offset, 1904 block_length, 1905 eRegisterKindDWARF, 1906 &initialValue, 1907 memberOffset, 1908 NULL)) 1909 { 1910 member_byte_offset = memberOffset.ResolveValue(NULL).UInt(); 1911 } 1912 } 1913 else 1914 { 1915 // With DWARF 3 and later, if the value is an integer constant, 1916 // this form value is the offset in bytes from the beginning 1917 // of the containing entity. 1918 member_byte_offset = form_value.Unsigned(); 1919 } 1920 break; 1921 1922 case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType (form_value.Unsigned()); break; 1923 case DW_AT_artificial: is_artificial = form_value.Boolean(); break; 1924 case DW_AT_APPLE_property_name: prop_name = form_value.AsCString(&get_debug_str_data()); break; 1925 case DW_AT_APPLE_property_getter: prop_getter_name = form_value.AsCString(&get_debug_str_data()); break; 1926 case DW_AT_APPLE_property_setter: prop_setter_name = form_value.AsCString(&get_debug_str_data()); break; 1927 case DW_AT_APPLE_property_attribute: prop_attributes = form_value.Unsigned(); break; 1928 case DW_AT_external: is_external = form_value.Boolean(); break; 1929 1930 default: 1931 case DW_AT_declaration: 1932 case DW_AT_description: 1933 case DW_AT_mutable: 1934 case DW_AT_visibility: 1935 case DW_AT_sibling: 1936 break; 1937 } 1938 } 1939 } 1940 1941 if (prop_name) 1942 { 1943 ConstString fixed_getter; 1944 ConstString fixed_setter; 1945 1946 // Check if the property getter/setter were provided as full 1947 // names. We want basenames, so we extract them. 1948 1949 if (prop_getter_name && prop_getter_name[0] == '-') 1950 { 1951 ObjCLanguageRuntime::MethodName prop_getter_method(prop_getter_name, true); 1952 prop_getter_name = prop_getter_method.GetSelector().GetCString(); 1953 } 1954 1955 if (prop_setter_name && prop_setter_name[0] == '-') 1956 { 1957 ObjCLanguageRuntime::MethodName prop_setter_method(prop_setter_name, true); 1958 prop_setter_name = prop_setter_method.GetSelector().GetCString(); 1959 } 1960 1961 // If the names haven't been provided, they need to be 1962 // filled in. 1963 1964 if (!prop_getter_name) 1965 { 1966 prop_getter_name = prop_name; 1967 } 1968 if (!prop_setter_name && prop_name[0] && !(prop_attributes & DW_APPLE_PROPERTY_readonly)) 1969 { 1970 StreamString ss; 1971 1972 ss.Printf("set%c%s:", 1973 toupper(prop_name[0]), 1974 &prop_name[1]); 1975 1976 fixed_setter.SetCString(ss.GetData()); 1977 prop_setter_name = fixed_setter.GetCString(); 1978 } 1979 } 1980 1981 // Clang has a DWARF generation bug where sometimes it 1982 // represents fields that are references with bad byte size 1983 // and bit size/offset information such as: 1984 // 1985 // DW_AT_byte_size( 0x00 ) 1986 // DW_AT_bit_size( 0x40 ) 1987 // DW_AT_bit_offset( 0xffffffffffffffc0 ) 1988 // 1989 // So check the bit offset to make sure it is sane, and if 1990 // the values are not sane, remove them. If we don't do this 1991 // then we will end up with a crash if we try to use this 1992 // type in an expression when clang becomes unhappy with its 1993 // recycled debug info. 1994 1995 if (bit_offset > 128) 1996 { 1997 bit_size = 0; 1998 bit_offset = 0; 1999 } 2000 2001 // FIXME: Make Clang ignore Objective-C accessibility for expressions 2002 if (class_language == eLanguageTypeObjC || 2003 class_language == eLanguageTypeObjC_plus_plus) 2004 accessibility = eAccessNone; 2005 2006 if (member_idx == 0 && !is_artificial && name && (strstr (name, "_vptr$") == name)) 2007 { 2008 // Not all compilers will mark the vtable pointer 2009 // member as artificial (llvm-gcc). We can't have 2010 // the virtual members in our classes otherwise it 2011 // throws off all child offsets since we end up 2012 // having and extra pointer sized member in our 2013 // class layouts. 2014 is_artificial = true; 2015 } 2016 2017 // Handle static members 2018 if (is_external && member_byte_offset == UINT32_MAX) 2019 { 2020 Type *var_type = ResolveTypeUID(encoding_uid); 2021 2022 if (var_type) 2023 { 2024 if (accessibility == eAccessNone) 2025 accessibility = eAccessPublic; 2026 class_clang_type.AddVariableToRecordType (name, 2027 var_type->GetClangLayoutType(), 2028 accessibility); 2029 } 2030 break; 2031 } 2032 2033 if (is_artificial == false) 2034 { 2035 Type *member_type = ResolveTypeUID(encoding_uid); 2036 2037 clang::FieldDecl *field_decl = NULL; 2038 if (tag == DW_TAG_member) 2039 { 2040 if (member_type) 2041 { 2042 if (accessibility == eAccessNone) 2043 accessibility = default_accessibility; 2044 member_accessibilities.push_back(accessibility); 2045 2046 uint64_t field_bit_offset = (member_byte_offset == UINT32_MAX ? 0 : (member_byte_offset * 8)); 2047 if (bit_size > 0) 2048 { 2049 2050 BitfieldInfo this_field_info; 2051 this_field_info.bit_offset = field_bit_offset; 2052 this_field_info.bit_size = bit_size; 2053 2054 ///////////////////////////////////////////////////////////// 2055 // How to locate a field given the DWARF debug information 2056 // 2057 // AT_byte_size indicates the size of the word in which the 2058 // bit offset must be interpreted. 2059 // 2060 // AT_data_member_location indicates the byte offset of the 2061 // word from the base address of the structure. 2062 // 2063 // AT_bit_offset indicates how many bits into the word 2064 // (according to the host endianness) the low-order bit of 2065 // the field starts. AT_bit_offset can be negative. 2066 // 2067 // AT_bit_size indicates the size of the field in bits. 2068 ///////////////////////////////////////////////////////////// 2069 2070 if (byte_size == 0) 2071 byte_size = member_type->GetByteSize(); 2072 2073 if (GetObjectFile()->GetByteOrder() == eByteOrderLittle) 2074 { 2075 this_field_info.bit_offset += byte_size * 8; 2076 this_field_info.bit_offset -= (bit_offset + bit_size); 2077 } 2078 else 2079 { 2080 this_field_info.bit_offset += bit_offset; 2081 } 2082 2083 // Update the field bit offset we will report for layout 2084 field_bit_offset = this_field_info.bit_offset; 2085 2086 // If the member to be emitted did not start on a character boundary and there is 2087 // empty space between the last field and this one, then we need to emit an 2088 // anonymous member filling up the space up to its start. There are three cases 2089 // here: 2090 // 2091 // 1 If the previous member ended on a character boundary, then we can emit an 2092 // anonymous member starting at the most recent character boundary. 2093 // 2094 // 2 If the previous member did not end on a character boundary and the distance 2095 // from the end of the previous member to the current member is less than a 2096 // word width, then we can emit an anonymous member starting right after the 2097 // previous member and right before this member. 2098 // 2099 // 3 If the previous member did not end on a character boundary and the distance 2100 // from the end of the previous member to the current member is greater than 2101 // or equal a word width, then we act as in Case 1. 2102 2103 const uint64_t character_width = 8; 2104 const uint64_t word_width = 32; 2105 2106 // Objective-C has invalid DW_AT_bit_offset values in older versions 2107 // of clang, so we have to be careful and only insert unnamed bitfields 2108 // if we have a new enough clang. 2109 bool detect_unnamed_bitfields = true; 2110 2111 if (class_language == eLanguageTypeObjC || class_language == eLanguageTypeObjC_plus_plus) 2112 detect_unnamed_bitfields = dwarf_cu->Supports_unnamed_objc_bitfields (); 2113 2114 if (detect_unnamed_bitfields) 2115 { 2116 BitfieldInfo anon_field_info; 2117 2118 if ((this_field_info.bit_offset % character_width) != 0) // not char aligned 2119 { 2120 uint64_t last_field_end = 0; 2121 2122 if (last_field_info.IsValid()) 2123 last_field_end = last_field_info.bit_offset + last_field_info.bit_size; 2124 2125 if (this_field_info.bit_offset != last_field_end) 2126 { 2127 if (((last_field_end % character_width) == 0) || // case 1 2128 (this_field_info.bit_offset - last_field_end >= word_width)) // case 3 2129 { 2130 anon_field_info.bit_size = this_field_info.bit_offset % character_width; 2131 anon_field_info.bit_offset = this_field_info.bit_offset - anon_field_info.bit_size; 2132 } 2133 else // case 2 2134 { 2135 anon_field_info.bit_size = this_field_info.bit_offset - last_field_end; 2136 anon_field_info.bit_offset = last_field_end; 2137 } 2138 } 2139 } 2140 2141 if (anon_field_info.IsValid()) 2142 { 2143 clang::FieldDecl *unnamed_bitfield_decl = class_clang_type.AddFieldToRecordType (NULL, 2144 GetClangASTContext().GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, word_width), 2145 accessibility, 2146 anon_field_info.bit_size); 2147 2148 layout_info.field_offsets.insert( 2149 std::make_pair(unnamed_bitfield_decl, anon_field_info.bit_offset)); 2150 } 2151 } 2152 last_field_info = this_field_info; 2153 } 2154 else 2155 { 2156 last_field_info.Clear(); 2157 } 2158 2159 ClangASTType member_clang_type = member_type->GetClangLayoutType(); 2160 2161 { 2162 // Older versions of clang emit array[0] and array[1] in the same way (<rdar://problem/12566646>). 2163 // If the current field is at the end of the structure, then there is definitely no room for extra 2164 // elements and we override the type to array[0]. 2165 2166 ClangASTType member_array_element_type; 2167 uint64_t member_array_size; 2168 bool member_array_is_incomplete; 2169 2170 if (member_clang_type.IsArrayType(&member_array_element_type, 2171 &member_array_size, 2172 &member_array_is_incomplete) && 2173 !member_array_is_incomplete) 2174 { 2175 uint64_t parent_byte_size = parent_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, UINT64_MAX); 2176 2177 if (member_byte_offset >= parent_byte_size) 2178 { 2179 if (member_array_size != 1) 2180 { 2181 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, 2182 MakeUserID(die->GetOffset()), 2183 name, 2184 encoding_uid, 2185 MakeUserID(parent_die->GetOffset())); 2186 } 2187 2188 member_clang_type = GetClangASTContext().CreateArrayType(member_array_element_type, 0, false); 2189 } 2190 } 2191 } 2192 2193 field_decl = class_clang_type.AddFieldToRecordType (name, 2194 member_clang_type, 2195 accessibility, 2196 bit_size); 2197 2198 GetClangASTContext().SetMetadataAsUserID (field_decl, MakeUserID(die->GetOffset())); 2199 2200 layout_info.field_offsets.insert(std::make_pair(field_decl, field_bit_offset)); 2201 } 2202 else 2203 { 2204 if (name) 2205 GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 " which was unable to be parsed", 2206 MakeUserID(die->GetOffset()), 2207 name, 2208 encoding_uid); 2209 else 2210 GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member refers to type 0x%8.8" PRIx64 " which was unable to be parsed", 2211 MakeUserID(die->GetOffset()), 2212 encoding_uid); 2213 } 2214 } 2215 2216 if (prop_name != NULL) 2217 { 2218 clang::ObjCIvarDecl *ivar_decl = NULL; 2219 2220 if (field_decl) 2221 { 2222 ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl); 2223 assert (ivar_decl != NULL); 2224 } 2225 2226 ClangASTMetadata metadata; 2227 metadata.SetUserID (MakeUserID(die->GetOffset())); 2228 delayed_properties.push_back(DelayedAddObjCClassProperty(class_clang_type, 2229 prop_name, 2230 member_type->GetClangLayoutType(), 2231 ivar_decl, 2232 prop_setter_name, 2233 prop_getter_name, 2234 prop_attributes, 2235 &metadata)); 2236 2237 if (ivar_decl) 2238 GetClangASTContext().SetMetadataAsUserID (ivar_decl, MakeUserID(die->GetOffset())); 2239 } 2240 } 2241 } 2242 ++member_idx; 2243 } 2244 break; 2245 2246 case DW_TAG_subprogram: 2247 // Let the type parsing code handle this one for us. 2248 member_function_dies.Append (die); 2249 break; 2250 2251 case DW_TAG_inheritance: 2252 { 2253 is_a_class = true; 2254 if (default_accessibility == eAccessNone) 2255 default_accessibility = eAccessPrivate; 2256 // TODO: implement DW_TAG_inheritance type parsing 2257 DWARFDebugInfoEntry::Attributes attributes; 2258 const size_t num_attributes = die->GetAttributes (this, 2259 dwarf_cu, 2260 fixed_form_sizes, 2261 attributes); 2262 if (num_attributes > 0) 2263 { 2264 Declaration decl; 2265 DWARFExpression location; 2266 lldb::user_id_t encoding_uid = LLDB_INVALID_UID; 2267 AccessType accessibility = default_accessibility; 2268 bool is_virtual = false; 2269 bool is_base_of_class = true; 2270 off_t member_byte_offset = 0; 2271 uint32_t i; 2272 for (i=0; i<num_attributes; ++i) 2273 { 2274 const dw_attr_t attr = attributes.AttributeAtIndex(i); 2275 DWARFFormValue form_value; 2276 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 2277 { 2278 switch (attr) 2279 { 2280 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 2281 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 2282 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 2283 case DW_AT_type: encoding_uid = form_value.Reference(); break; 2284 case DW_AT_data_member_location: 2285 if (form_value.BlockData()) 2286 { 2287 Value initialValue(0); 2288 Value memberOffset(0); 2289 const DWARFDataExtractor& debug_info_data = get_debug_info_data(); 2290 uint32_t block_length = form_value.Unsigned(); 2291 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 2292 if (DWARFExpression::Evaluate (NULL, 2293 NULL, 2294 NULL, 2295 NULL, 2296 module, 2297 debug_info_data, 2298 block_offset, 2299 block_length, 2300 eRegisterKindDWARF, 2301 &initialValue, 2302 memberOffset, 2303 NULL)) 2304 { 2305 member_byte_offset = memberOffset.ResolveValue(NULL).UInt(); 2306 } 2307 } 2308 else 2309 { 2310 // With DWARF 3 and later, if the value is an integer constant, 2311 // this form value is the offset in bytes from the beginning 2312 // of the containing entity. 2313 member_byte_offset = form_value.Unsigned(); 2314 } 2315 break; 2316 2317 case DW_AT_accessibility: 2318 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); 2319 break; 2320 2321 case DW_AT_virtuality: 2322 is_virtual = form_value.Boolean(); 2323 break; 2324 2325 case DW_AT_sibling: 2326 break; 2327 2328 default: 2329 break; 2330 } 2331 } 2332 } 2333 2334 Type *base_class_type = ResolveTypeUID(encoding_uid); 2335 assert(base_class_type); 2336 2337 ClangASTType base_class_clang_type = base_class_type->GetClangFullType(); 2338 assert (base_class_clang_type); 2339 if (class_language == eLanguageTypeObjC) 2340 { 2341 class_clang_type.SetObjCSuperClass(base_class_clang_type); 2342 } 2343 else 2344 { 2345 base_classes.push_back (base_class_clang_type.CreateBaseClassSpecifier (accessibility, 2346 is_virtual, 2347 is_base_of_class)); 2348 2349 if (is_virtual) 2350 { 2351 // Do not specify any offset for virtual inheritance. The DWARF produced by clang doesn't 2352 // give us a constant offset, but gives us a DWARF expressions that requires an actual object 2353 // in memory. the DW_AT_data_member_location for a virtual base class looks like: 2354 // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref, DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref, DW_OP_plus ) 2355 // Given this, there is really no valid response we can give to clang for virtual base 2356 // class offsets, and this should eventually be removed from LayoutRecordType() in the external 2357 // AST source in clang. 2358 } 2359 else 2360 { 2361 layout_info.base_offsets.insert( 2362 std::make_pair(base_class_clang_type.GetAsCXXRecordDecl(), 2363 clang::CharUnits::fromQuantity(member_byte_offset))); 2364 } 2365 } 2366 } 2367 } 2368 break; 2369 2370 default: 2371 break; 2372 } 2373 } 2374 2375 return count; 2376 } 2377 2378 2379 clang::DeclContext* 2380 SymbolFileDWARF::GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid) 2381 { 2382 DWARFDebugInfo* debug_info = DebugInfo(); 2383 if (debug_info && UserIDMatches(type_uid)) 2384 { 2385 DWARFCompileUnitSP cu_sp; 2386 const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(type_uid, &cu_sp); 2387 if (die) 2388 return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL); 2389 } 2390 return NULL; 2391 } 2392 2393 clang::DeclContext* 2394 SymbolFileDWARF::GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid) 2395 { 2396 if (UserIDMatches(type_uid)) 2397 return GetClangDeclContextForDIEOffset (sc, type_uid); 2398 return NULL; 2399 } 2400 2401 Type* 2402 SymbolFileDWARF::ResolveTypeUID (lldb::user_id_t type_uid) 2403 { 2404 if (UserIDMatches(type_uid)) 2405 { 2406 DWARFDebugInfo* debug_info = DebugInfo(); 2407 if (debug_info) 2408 { 2409 DWARFCompileUnitSP cu_sp; 2410 const DWARFDebugInfoEntry* type_die = debug_info->GetDIEPtr(type_uid, &cu_sp); 2411 const bool assert_not_being_parsed = true; 2412 return ResolveTypeUID (cu_sp.get(), type_die, assert_not_being_parsed); 2413 } 2414 } 2415 return NULL; 2416 } 2417 2418 Type* 2419 SymbolFileDWARF::ResolveTypeUID (DWARFCompileUnit* cu, const DWARFDebugInfoEntry* die, bool assert_not_being_parsed) 2420 { 2421 if (die != NULL) 2422 { 2423 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 2424 if (log) 2425 GetObjectFile()->GetModule()->LogMessage (log, 2426 "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s'", 2427 die->GetOffset(), 2428 DW_TAG_value_to_name(die->Tag()), 2429 die->GetName(this, cu)); 2430 2431 // We might be coming in in the middle of a type tree (a class 2432 // withing a class, an enum within a class), so parse any needed 2433 // parent DIEs before we get to this one... 2434 const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die); 2435 switch (decl_ctx_die->Tag()) 2436 { 2437 case DW_TAG_structure_type: 2438 case DW_TAG_union_type: 2439 case DW_TAG_class_type: 2440 { 2441 // Get the type, which could be a forward declaration 2442 if (log) 2443 GetObjectFile()->GetModule()->LogMessage (log, 2444 "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent forward type for 0x%8.8x", 2445 die->GetOffset(), 2446 DW_TAG_value_to_name(die->Tag()), 2447 die->GetName(this, cu), 2448 decl_ctx_die->GetOffset()); 2449 // 2450 // Type *parent_type = ResolveTypeUID (cu, decl_ctx_die, assert_not_being_parsed); 2451 // if (child_requires_parent_class_union_or_struct_to_be_completed(die->Tag())) 2452 // { 2453 // if (log) 2454 // GetObjectFile()->GetModule()->LogMessage (log, 2455 // "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent full type for 0x%8.8x since die is a function", 2456 // die->GetOffset(), 2457 // DW_TAG_value_to_name(die->Tag()), 2458 // die->GetName(this, cu), 2459 // decl_ctx_die->GetOffset()); 2460 // // Ask the type to complete itself if it already hasn't since if we 2461 // // want a function (method or static) from a class, the class must 2462 // // create itself and add it's own methods and class functions. 2463 // if (parent_type) 2464 // parent_type->GetClangFullType(); 2465 // } 2466 } 2467 break; 2468 2469 default: 2470 break; 2471 } 2472 return ResolveType (cu, die); 2473 } 2474 return NULL; 2475 } 2476 2477 // This function is used when SymbolFileDWARFDebugMap owns a bunch of 2478 // SymbolFileDWARF objects to detect if this DWARF file is the one that 2479 // can resolve a clang_type. 2480 bool 2481 SymbolFileDWARF::HasForwardDeclForClangType (const ClangASTType &clang_type) 2482 { 2483 ClangASTType clang_type_no_qualifiers = clang_type.RemoveFastQualifiers(); 2484 const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers.GetOpaqueQualType()); 2485 return die != NULL; 2486 } 2487 2488 2489 bool 2490 SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (ClangASTType &clang_type) 2491 { 2492 // We have a struct/union/class/enum that needs to be fully resolved. 2493 ClangASTType clang_type_no_qualifiers = clang_type.RemoveFastQualifiers(); 2494 const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers.GetOpaqueQualType()); 2495 if (die == NULL) 2496 { 2497 // We have already resolved this type... 2498 return true; 2499 } 2500 // Once we start resolving this type, remove it from the forward declaration 2501 // map in case anyone child members or other types require this type to get resolved. 2502 // The type will get resolved when all of the calls to SymbolFileDWARF::ResolveClangOpaqueTypeDefinition 2503 // are done. 2504 m_forward_decl_clang_type_to_die.erase (clang_type_no_qualifiers.GetOpaqueQualType()); 2505 2506 // Disable external storage for this type so we don't get anymore 2507 // clang::ExternalASTSource queries for this type. 2508 clang_type.SetHasExternalStorage (false); 2509 2510 DWARFDebugInfo* debug_info = DebugInfo(); 2511 2512 DWARFCompileUnit *dwarf_cu = debug_info->GetCompileUnitContainingDIE (die->GetOffset()).get(); 2513 Type *type = m_die_to_type.lookup (die); 2514 2515 const dw_tag_t tag = die->Tag(); 2516 2517 Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION)); 2518 if (log) 2519 GetObjectFile()->GetModule()->LogMessageVerboseBacktrace (log, 2520 "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...", 2521 MakeUserID(die->GetOffset()), 2522 DW_TAG_value_to_name(tag), 2523 type->GetName().AsCString()); 2524 assert (clang_type); 2525 DWARFDebugInfoEntry::Attributes attributes; 2526 2527 switch (tag) 2528 { 2529 case DW_TAG_structure_type: 2530 case DW_TAG_union_type: 2531 case DW_TAG_class_type: 2532 { 2533 LayoutInfo layout_info; 2534 2535 { 2536 if (die->HasChildren()) 2537 { 2538 LanguageType class_language = eLanguageTypeUnknown; 2539 if (clang_type.IsObjCObjectOrInterfaceType()) 2540 { 2541 class_language = eLanguageTypeObjC; 2542 // For objective C we don't start the definition when 2543 // the class is created. 2544 clang_type.StartTagDeclarationDefinition (); 2545 } 2546 2547 int tag_decl_kind = -1; 2548 AccessType default_accessibility = eAccessNone; 2549 if (tag == DW_TAG_structure_type) 2550 { 2551 tag_decl_kind = clang::TTK_Struct; 2552 default_accessibility = eAccessPublic; 2553 } 2554 else if (tag == DW_TAG_union_type) 2555 { 2556 tag_decl_kind = clang::TTK_Union; 2557 default_accessibility = eAccessPublic; 2558 } 2559 else if (tag == DW_TAG_class_type) 2560 { 2561 tag_decl_kind = clang::TTK_Class; 2562 default_accessibility = eAccessPrivate; 2563 } 2564 2565 SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu)); 2566 std::vector<clang::CXXBaseSpecifier *> base_classes; 2567 std::vector<int> member_accessibilities; 2568 bool is_a_class = false; 2569 // Parse members and base classes first 2570 DWARFDIECollection member_function_dies; 2571 2572 DelayedPropertyList delayed_properties; 2573 ParseChildMembers (sc, 2574 dwarf_cu, 2575 die, 2576 clang_type, 2577 class_language, 2578 base_classes, 2579 member_accessibilities, 2580 member_function_dies, 2581 delayed_properties, 2582 default_accessibility, 2583 is_a_class, 2584 layout_info); 2585 2586 // Now parse any methods if there were any... 2587 size_t num_functions = member_function_dies.Size(); 2588 if (num_functions > 0) 2589 { 2590 for (size_t i=0; i<num_functions; ++i) 2591 { 2592 ResolveType(dwarf_cu, member_function_dies.GetDIEPtrAtIndex(i)); 2593 } 2594 } 2595 2596 if (class_language == eLanguageTypeObjC) 2597 { 2598 ConstString class_name (clang_type.GetTypeName()); 2599 if (class_name) 2600 { 2601 DIEArray method_die_offsets; 2602 if (m_using_apple_tables) 2603 { 2604 if (m_apple_objc_ap.get()) 2605 m_apple_objc_ap->FindByName(class_name.GetCString(), method_die_offsets); 2606 } 2607 else 2608 { 2609 if (!m_indexed) 2610 Index (); 2611 2612 m_objc_class_selectors_index.Find (class_name, method_die_offsets); 2613 } 2614 2615 if (!method_die_offsets.empty()) 2616 { 2617 DWARFDebugInfo* debug_info = DebugInfo(); 2618 2619 DWARFCompileUnit* method_cu = NULL; 2620 const size_t num_matches = method_die_offsets.size(); 2621 for (size_t i=0; i<num_matches; ++i) 2622 { 2623 const dw_offset_t die_offset = method_die_offsets[i]; 2624 DWARFDebugInfoEntry *method_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &method_cu); 2625 2626 if (method_die) 2627 ResolveType (method_cu, method_die); 2628 else 2629 { 2630 if (m_using_apple_tables) 2631 { 2632 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_objc accelerator table had bad die 0x%8.8x for '%s')\n", 2633 die_offset, class_name.GetCString()); 2634 } 2635 } 2636 } 2637 } 2638 2639 for (DelayedPropertyList::iterator pi = delayed_properties.begin(), pe = delayed_properties.end(); 2640 pi != pe; 2641 ++pi) 2642 pi->Finalize(); 2643 } 2644 } 2645 2646 // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we 2647 // need to tell the clang type it is actually a class. 2648 if (class_language != eLanguageTypeObjC) 2649 { 2650 if (is_a_class && tag_decl_kind != clang::TTK_Class) 2651 clang_type.SetTagTypeKind (clang::TTK_Class); 2652 } 2653 2654 // Since DW_TAG_structure_type gets used for both classes 2655 // and structures, we may need to set any DW_TAG_member 2656 // fields to have a "private" access if none was specified. 2657 // When we parsed the child members we tracked that actual 2658 // accessibility value for each DW_TAG_member in the 2659 // "member_accessibilities" array. If the value for the 2660 // member is zero, then it was set to the "default_accessibility" 2661 // which for structs was "public". Below we correct this 2662 // by setting any fields to "private" that weren't correctly 2663 // set. 2664 if (is_a_class && !member_accessibilities.empty()) 2665 { 2666 // This is a class and all members that didn't have 2667 // their access specified are private. 2668 clang_type.SetDefaultAccessForRecordFields (eAccessPrivate, 2669 &member_accessibilities.front(), 2670 member_accessibilities.size()); 2671 } 2672 2673 if (!base_classes.empty()) 2674 { 2675 // Make sure all base classes refer to complete types and not 2676 // forward declarations. If we don't do this, clang will crash 2677 // with an assertion in the call to clang_type.SetBaseClassesForClassType() 2678 bool base_class_error = false; 2679 for (auto &base_class : base_classes) 2680 { 2681 clang::TypeSourceInfo *type_source_info = base_class->getTypeSourceInfo(); 2682 if (type_source_info) 2683 { 2684 ClangASTType base_class_type (GetClangASTContext().getASTContext(), type_source_info->getType()); 2685 if (base_class_type.GetCompleteType() == false) 2686 { 2687 if (!base_class_error) 2688 { 2689 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", 2690 die->GetOffset(), 2691 die->GetName(this, dwarf_cu), 2692 base_class_type.GetTypeName().GetCString(), 2693 sc.comp_unit ? sc.comp_unit->GetPath().c_str() : "the source file"); 2694 } 2695 // We have no choice other than to pretend that the base class 2696 // is complete. If we don't do this, clang will crash when we 2697 // call setBases() inside of "clang_type.SetBaseClassesForClassType()" 2698 // below. Since we provide layout assistance, all ivars in this 2699 // class and other classes will be fine, this is the best we can do 2700 // short of crashing. 2701 base_class_type.StartTagDeclarationDefinition (); 2702 base_class_type.CompleteTagDeclarationDefinition (); 2703 } 2704 } 2705 } 2706 clang_type.SetBaseClassesForClassType (&base_classes.front(), 2707 base_classes.size()); 2708 2709 // Clang will copy each CXXBaseSpecifier in "base_classes" 2710 // so we have to free them all. 2711 ClangASTType::DeleteBaseClassSpecifiers (&base_classes.front(), 2712 base_classes.size()); 2713 } 2714 } 2715 } 2716 2717 clang_type.BuildIndirectFields (); 2718 clang_type.CompleteTagDeclarationDefinition (); 2719 2720 if (!layout_info.field_offsets.empty() || 2721 !layout_info.base_offsets.empty() || 2722 !layout_info.vbase_offsets.empty() ) 2723 { 2724 if (type) 2725 layout_info.bit_size = type->GetByteSize() * 8; 2726 if (layout_info.bit_size == 0) 2727 layout_info.bit_size = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, 0) * 8; 2728 2729 clang::CXXRecordDecl *record_decl = clang_type.GetAsCXXRecordDecl(); 2730 if (record_decl) 2731 { 2732 if (log) 2733 { 2734 GetObjectFile()->GetModule()->LogMessage (log, 2735 "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])", 2736 static_cast<void*>(clang_type.GetOpaqueQualType()), 2737 static_cast<void*>(record_decl), 2738 layout_info.bit_size, 2739 layout_info.alignment, 2740 static_cast<uint32_t>(layout_info.field_offsets.size()), 2741 static_cast<uint32_t>(layout_info.base_offsets.size()), 2742 static_cast<uint32_t>(layout_info.vbase_offsets.size())); 2743 2744 uint32_t idx; 2745 { 2746 llvm::DenseMap<const clang::FieldDecl *, uint64_t>::const_iterator pos, 2747 end = layout_info.field_offsets.end(); 2748 for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; ++pos, ++idx) 2749 { 2750 GetObjectFile()->GetModule()->LogMessage( 2751 log, "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) field[%u] = " 2752 "{ bit_offset=%u, name='%s' }", 2753 static_cast<void *>(clang_type.GetOpaqueQualType()), idx, 2754 static_cast<uint32_t>(pos->second), pos->first->getNameAsString().c_str()); 2755 } 2756 } 2757 2758 { 2759 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator base_pos, 2760 base_end = layout_info.base_offsets.end(); 2761 for (idx = 0, base_pos = layout_info.base_offsets.begin(); base_pos != base_end; 2762 ++base_pos, ++idx) 2763 { 2764 GetObjectFile()->GetModule()->LogMessage( 2765 log, "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) base[%u] " 2766 "= { byte_offset=%u, name='%s' }", 2767 clang_type.GetOpaqueQualType(), idx, (uint32_t)base_pos->second.getQuantity(), 2768 base_pos->first->getNameAsString().c_str()); 2769 } 2770 } 2771 { 2772 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator vbase_pos, 2773 vbase_end = layout_info.vbase_offsets.end(); 2774 for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); vbase_pos != vbase_end; 2775 ++vbase_pos, ++idx) 2776 { 2777 GetObjectFile()->GetModule()->LogMessage( 2778 log, "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) " 2779 "vbase[%u] = { byte_offset=%u, name='%s' }", 2780 static_cast<void *>(clang_type.GetOpaqueQualType()), idx, 2781 static_cast<uint32_t>(vbase_pos->second.getQuantity()), 2782 vbase_pos->first->getNameAsString().c_str()); 2783 } 2784 } 2785 } 2786 m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info)); 2787 } 2788 } 2789 } 2790 2791 return (bool)clang_type; 2792 2793 case DW_TAG_enumeration_type: 2794 clang_type.StartTagDeclarationDefinition (); 2795 if (die->HasChildren()) 2796 { 2797 SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu)); 2798 bool is_signed = false; 2799 clang_type.IsIntegerType(is_signed); 2800 ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), dwarf_cu, die); 2801 } 2802 clang_type.CompleteTagDeclarationDefinition (); 2803 return (bool)clang_type; 2804 2805 default: 2806 assert(false && "not a forward clang type decl!"); 2807 break; 2808 } 2809 return false; 2810 } 2811 2812 Type* 2813 SymbolFileDWARF::ResolveType (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* type_die, bool assert_not_being_parsed) 2814 { 2815 if (type_die != NULL) 2816 { 2817 Type *type = m_die_to_type.lookup (type_die); 2818 2819 if (type == NULL) 2820 type = GetTypeForDIE (dwarf_cu, type_die).get(); 2821 2822 if (assert_not_being_parsed) 2823 { 2824 if (type != DIE_IS_BEING_PARSED) 2825 return type; 2826 2827 GetObjectFile()->GetModule()->ReportError ("Parsing a die that is being parsed die: 0x%8.8x: %s %s", 2828 type_die->GetOffset(), 2829 DW_TAG_value_to_name(type_die->Tag()), 2830 type_die->GetName(this, dwarf_cu)); 2831 2832 } 2833 else 2834 return type; 2835 } 2836 return NULL; 2837 } 2838 2839 CompileUnit* 2840 SymbolFileDWARF::GetCompUnitForDWARFCompUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx) 2841 { 2842 // Check if the symbol vendor already knows about this compile unit? 2843 if (dwarf_cu->GetUserData() == NULL) 2844 { 2845 // The symbol vendor doesn't know about this compile unit, we 2846 // need to parse and add it to the symbol vendor object. 2847 return ParseCompileUnit(dwarf_cu, cu_idx).get(); 2848 } 2849 return (CompileUnit*)dwarf_cu->GetUserData(); 2850 } 2851 2852 bool 2853 SymbolFileDWARF::GetFunction (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* func_die, SymbolContext& sc) 2854 { 2855 sc.Clear(false); 2856 // Check if the symbol vendor already knows about this compile unit? 2857 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 2858 2859 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(func_die->GetOffset())).get(); 2860 if (sc.function == NULL) 2861 sc.function = ParseCompileUnitFunction(sc, dwarf_cu, func_die); 2862 2863 if (sc.function) 2864 { 2865 sc.module_sp = sc.function->CalculateSymbolContextModule(); 2866 return true; 2867 } 2868 2869 return false; 2870 } 2871 2872 void 2873 SymbolFileDWARF::UpdateExternalModuleListIfNeeded() 2874 { 2875 if (m_fetched_external_modules) 2876 return; 2877 m_fetched_external_modules = true; 2878 2879 DWARFDebugInfo * debug_info = DebugInfo(); 2880 debug_info->GetNumCompileUnits(); 2881 2882 const uint32_t num_compile_units = GetNumCompileUnits(); 2883 for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) 2884 { 2885 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx); 2886 2887 const DWARFDebugInfoEntry *die = dwarf_cu->GetCompileUnitDIEOnly(); 2888 if (die && die->HasChildren() == false) 2889 { 2890 const uint64_t name_strp = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_name, UINT64_MAX); 2891 const uint64_t dwo_path_strp = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_GNU_dwo_name, UINT64_MAX); 2892 2893 if (name_strp != UINT64_MAX) 2894 { 2895 if (m_external_type_modules.find(dwo_path_strp) == m_external_type_modules.end()) 2896 { 2897 const char *name = get_debug_str_data().PeekCStr(name_strp); 2898 const char *dwo_path = get_debug_str_data().PeekCStr(dwo_path_strp); 2899 if (name || dwo_path) 2900 { 2901 ModuleSP module_sp; 2902 if (dwo_path) 2903 { 2904 ModuleSpec dwo_module_spec; 2905 dwo_module_spec.GetFileSpec().SetFile(dwo_path, false); 2906 dwo_module_spec.GetArchitecture() = m_obj_file->GetModule()->GetArchitecture(); 2907 //printf ("Loading dwo = '%s'\n", dwo_path); 2908 Error error = ModuleList::GetSharedModule (dwo_module_spec, module_sp, NULL, NULL, NULL); 2909 } 2910 2911 if (dwo_path_strp != LLDB_INVALID_UID) 2912 { 2913 m_external_type_modules[dwo_path_strp] = ClangModuleInfo { ConstString(name), module_sp }; 2914 } 2915 else 2916 { 2917 // This hack should be removed promptly once clang emits both. 2918 m_external_type_modules[name_strp] = ClangModuleInfo { ConstString(name), module_sp }; 2919 } 2920 } 2921 } 2922 } 2923 } 2924 } 2925 } 2926 2927 SymbolFileDWARF::GlobalVariableMap & 2928 SymbolFileDWARF::GetGlobalAranges() 2929 { 2930 if (!m_global_aranges_ap) 2931 { 2932 m_global_aranges_ap.reset (new GlobalVariableMap()); 2933 2934 ModuleSP module_sp = GetObjectFile()->GetModule(); 2935 if (module_sp) 2936 { 2937 const size_t num_cus = module_sp->GetNumCompileUnits(); 2938 for (size_t i = 0; i < num_cus; ++i) 2939 { 2940 CompUnitSP cu_sp = module_sp->GetCompileUnitAtIndex(i); 2941 if (cu_sp) 2942 { 2943 VariableListSP globals_sp = cu_sp->GetVariableList(true); 2944 if (globals_sp) 2945 { 2946 const size_t num_globals = globals_sp->GetSize(); 2947 for (size_t g = 0; g < num_globals; ++g) 2948 { 2949 VariableSP var_sp = globals_sp->GetVariableAtIndex(g); 2950 if (var_sp && !var_sp->GetLocationIsConstantValueData()) 2951 { 2952 const DWARFExpression &location = var_sp->LocationExpression(); 2953 Value location_result; 2954 Error error; 2955 if (location.Evaluate(NULL, NULL, NULL, LLDB_INVALID_ADDRESS, NULL, location_result, &error)) 2956 { 2957 if (location_result.GetValueType() == Value::eValueTypeFileAddress) 2958 { 2959 lldb::addr_t file_addr = location_result.GetScalar().ULongLong(); 2960 lldb::addr_t byte_size = 1; 2961 if (var_sp->GetType()) 2962 byte_size = var_sp->GetType()->GetByteSize(); 2963 m_global_aranges_ap->Append(GlobalVariableMap::Entry(file_addr, byte_size, var_sp.get())); 2964 } 2965 } 2966 } 2967 } 2968 } 2969 } 2970 } 2971 } 2972 m_global_aranges_ap->Sort(); 2973 } 2974 return *m_global_aranges_ap; 2975 } 2976 2977 2978 uint32_t 2979 SymbolFileDWARF::ResolveSymbolContext (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc) 2980 { 2981 Timer scoped_timer(__PRETTY_FUNCTION__, 2982 "SymbolFileDWARF::ResolveSymbolContext (so_addr = { section = %p, offset = 0x%" PRIx64 " }, resolve_scope = 0x%8.8x)", 2983 static_cast<void*>(so_addr.GetSection().get()), 2984 so_addr.GetOffset(), resolve_scope); 2985 uint32_t resolved = 0; 2986 if (resolve_scope & ( eSymbolContextCompUnit | 2987 eSymbolContextFunction | 2988 eSymbolContextBlock | 2989 eSymbolContextLineEntry | 2990 eSymbolContextVariable )) 2991 { 2992 lldb::addr_t file_vm_addr = so_addr.GetFileAddress(); 2993 2994 DWARFDebugInfo* debug_info = DebugInfo(); 2995 if (debug_info) 2996 { 2997 const dw_offset_t cu_offset = debug_info->GetCompileUnitAranges().FindAddress(file_vm_addr); 2998 if (cu_offset == DW_INVALID_OFFSET) 2999 { 3000 // Global variables are not in the compile unit address ranges. The only way to 3001 // currently find global variables is to iterate over the .debug_pubnames or the 3002 // __apple_names table and find all items in there that point to DW_TAG_variable 3003 // DIEs and then find the address that matches. 3004 if (resolve_scope & eSymbolContextVariable) 3005 { 3006 GlobalVariableMap &map = GetGlobalAranges(); 3007 const GlobalVariableMap::Entry *entry = map.FindEntryThatContains(file_vm_addr); 3008 if (entry && entry->data) 3009 { 3010 Variable *variable = entry->data; 3011 SymbolContextScope *scc = variable->GetSymbolContextScope(); 3012 if (scc) 3013 { 3014 scc->CalculateSymbolContext(&sc); 3015 sc.variable = variable; 3016 } 3017 return sc.GetResolvedMask(); 3018 } 3019 } 3020 } 3021 else 3022 { 3023 uint32_t cu_idx = DW_INVALID_INDEX; 3024 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnit(cu_offset, &cu_idx).get(); 3025 if (dwarf_cu) 3026 { 3027 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx); 3028 if (sc.comp_unit) 3029 { 3030 resolved |= eSymbolContextCompUnit; 3031 3032 bool force_check_line_table = false; 3033 if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock)) 3034 { 3035 DWARFDebugInfoEntry *function_die = NULL; 3036 DWARFDebugInfoEntry *block_die = NULL; 3037 if (resolve_scope & eSymbolContextBlock) 3038 { 3039 dwarf_cu->LookupAddress(file_vm_addr, &function_die, &block_die); 3040 } 3041 else 3042 { 3043 dwarf_cu->LookupAddress(file_vm_addr, &function_die, NULL); 3044 } 3045 3046 if (function_die != NULL) 3047 { 3048 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get(); 3049 if (sc.function == NULL) 3050 sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die); 3051 } 3052 else 3053 { 3054 // We might have had a compile unit that had discontiguous 3055 // address ranges where the gaps are symbols that don't have 3056 // any debug info. Discontiguous compile unit address ranges 3057 // should only happen when there aren't other functions from 3058 // other compile units in these gaps. This helps keep the size 3059 // of the aranges down. 3060 force_check_line_table = true; 3061 } 3062 3063 if (sc.function != NULL) 3064 { 3065 resolved |= eSymbolContextFunction; 3066 3067 if (resolve_scope & eSymbolContextBlock) 3068 { 3069 Block& block = sc.function->GetBlock (true); 3070 3071 if (block_die != NULL) 3072 sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset())); 3073 else 3074 sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset())); 3075 if (sc.block) 3076 resolved |= eSymbolContextBlock; 3077 } 3078 } 3079 } 3080 3081 if ((resolve_scope & eSymbolContextLineEntry) || force_check_line_table) 3082 { 3083 LineTable *line_table = sc.comp_unit->GetLineTable(); 3084 if (line_table != NULL) 3085 { 3086 // And address that makes it into this function should be in terms 3087 // of this debug file if there is no debug map, or it will be an 3088 // address in the .o file which needs to be fixed up to be in terms 3089 // of the debug map executable. Either way, calling FixupAddress() 3090 // will work for us. 3091 Address exe_so_addr (so_addr); 3092 if (FixupAddress(exe_so_addr)) 3093 { 3094 if (line_table->FindLineEntryByAddress (exe_so_addr, sc.line_entry)) 3095 { 3096 resolved |= eSymbolContextLineEntry; 3097 } 3098 } 3099 } 3100 } 3101 3102 if (force_check_line_table && !(resolved & eSymbolContextLineEntry)) 3103 { 3104 // We might have had a compile unit that had discontiguous 3105 // address ranges where the gaps are symbols that don't have 3106 // any debug info. Discontiguous compile unit address ranges 3107 // should only happen when there aren't other functions from 3108 // other compile units in these gaps. This helps keep the size 3109 // of the aranges down. 3110 sc.comp_unit = NULL; 3111 resolved &= ~eSymbolContextCompUnit; 3112 } 3113 } 3114 else 3115 { 3116 GetObjectFile()->GetModule()->ReportWarning ("0x%8.8x: compile unit %u failed to create a valid lldb_private::CompileUnit class.", 3117 cu_offset, 3118 cu_idx); 3119 } 3120 } 3121 } 3122 } 3123 } 3124 return resolved; 3125 } 3126 3127 3128 3129 uint32_t 3130 SymbolFileDWARF::ResolveSymbolContext(const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list) 3131 { 3132 const uint32_t prev_size = sc_list.GetSize(); 3133 if (resolve_scope & eSymbolContextCompUnit) 3134 { 3135 DWARFDebugInfo* debug_info = DebugInfo(); 3136 if (debug_info) 3137 { 3138 uint32_t cu_idx; 3139 DWARFCompileUnit* dwarf_cu = NULL; 3140 3141 for (cu_idx = 0; (dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx)) != NULL; ++cu_idx) 3142 { 3143 CompileUnit *dc_cu = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx); 3144 const bool full_match = (bool)file_spec.GetDirectory(); 3145 bool file_spec_matches_cu_file_spec = dc_cu != NULL && FileSpec::Equal(file_spec, *dc_cu, full_match); 3146 if (check_inlines || file_spec_matches_cu_file_spec) 3147 { 3148 SymbolContext sc (m_obj_file->GetModule()); 3149 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx); 3150 if (sc.comp_unit) 3151 { 3152 uint32_t file_idx = UINT32_MAX; 3153 3154 // If we are looking for inline functions only and we don't 3155 // find it in the support files, we are done. 3156 if (check_inlines) 3157 { 3158 file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true); 3159 if (file_idx == UINT32_MAX) 3160 continue; 3161 } 3162 3163 if (line != 0) 3164 { 3165 LineTable *line_table = sc.comp_unit->GetLineTable(); 3166 3167 if (line_table != NULL && line != 0) 3168 { 3169 // We will have already looked up the file index if 3170 // we are searching for inline entries. 3171 if (!check_inlines) 3172 file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true); 3173 3174 if (file_idx != UINT32_MAX) 3175 { 3176 uint32_t found_line; 3177 uint32_t line_idx = line_table->FindLineEntryIndexByFileIndex (0, file_idx, line, false, &sc.line_entry); 3178 found_line = sc.line_entry.line; 3179 3180 while (line_idx != UINT32_MAX) 3181 { 3182 sc.function = NULL; 3183 sc.block = NULL; 3184 if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock)) 3185 { 3186 const lldb::addr_t file_vm_addr = sc.line_entry.range.GetBaseAddress().GetFileAddress(); 3187 if (file_vm_addr != LLDB_INVALID_ADDRESS) 3188 { 3189 DWARFDebugInfoEntry *function_die = NULL; 3190 DWARFDebugInfoEntry *block_die = NULL; 3191 dwarf_cu->LookupAddress(file_vm_addr, &function_die, resolve_scope & eSymbolContextBlock ? &block_die : NULL); 3192 3193 if (function_die != NULL) 3194 { 3195 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get(); 3196 if (sc.function == NULL) 3197 sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die); 3198 } 3199 3200 if (sc.function != NULL) 3201 { 3202 Block& block = sc.function->GetBlock (true); 3203 3204 if (block_die != NULL) 3205 sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset())); 3206 else if (function_die != NULL) 3207 sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset())); 3208 } 3209 } 3210 } 3211 3212 sc_list.Append(sc); 3213 line_idx = line_table->FindLineEntryIndexByFileIndex (line_idx + 1, file_idx, found_line, true, &sc.line_entry); 3214 } 3215 } 3216 } 3217 else if (file_spec_matches_cu_file_spec && !check_inlines) 3218 { 3219 // only append the context if we aren't looking for inline call sites 3220 // by file and line and if the file spec matches that of the compile unit 3221 sc_list.Append(sc); 3222 } 3223 } 3224 else if (file_spec_matches_cu_file_spec && !check_inlines) 3225 { 3226 // only append the context if we aren't looking for inline call sites 3227 // by file and line and if the file spec matches that of the compile unit 3228 sc_list.Append(sc); 3229 } 3230 3231 if (!check_inlines) 3232 break; 3233 } 3234 } 3235 } 3236 } 3237 } 3238 return sc_list.GetSize() - prev_size; 3239 } 3240 3241 void 3242 SymbolFileDWARF::Index () 3243 { 3244 if (m_indexed) 3245 return; 3246 m_indexed = true; 3247 Timer scoped_timer (__PRETTY_FUNCTION__, 3248 "SymbolFileDWARF::Index (%s)", 3249 GetObjectFile()->GetFileSpec().GetFilename().AsCString("<Unknown>")); 3250 3251 DWARFDebugInfo* debug_info = DebugInfo(); 3252 if (debug_info) 3253 { 3254 uint32_t cu_idx = 0; 3255 const uint32_t num_compile_units = GetNumCompileUnits(); 3256 for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) 3257 { 3258 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx); 3259 3260 bool clear_dies = dwarf_cu->ExtractDIEsIfNeeded (false) > 1; 3261 3262 dwarf_cu->Index (cu_idx, 3263 m_function_basename_index, 3264 m_function_fullname_index, 3265 m_function_method_index, 3266 m_function_selector_index, 3267 m_objc_class_selectors_index, 3268 m_global_index, 3269 m_type_index, 3270 m_namespace_index); 3271 3272 // Keep memory down by clearing DIEs if this generate function 3273 // caused them to be parsed 3274 if (clear_dies) 3275 dwarf_cu->ClearDIEs (true); 3276 } 3277 3278 m_function_basename_index.Finalize(); 3279 m_function_fullname_index.Finalize(); 3280 m_function_method_index.Finalize(); 3281 m_function_selector_index.Finalize(); 3282 m_objc_class_selectors_index.Finalize(); 3283 m_global_index.Finalize(); 3284 m_type_index.Finalize(); 3285 m_namespace_index.Finalize(); 3286 3287 #if defined (ENABLE_DEBUG_PRINTF) 3288 StreamFile s(stdout, false); 3289 s.Printf ("DWARF index for '%s':", 3290 GetObjectFile()->GetFileSpec().GetPath().c_str()); 3291 s.Printf("\nFunction basenames:\n"); m_function_basename_index.Dump (&s); 3292 s.Printf("\nFunction fullnames:\n"); m_function_fullname_index.Dump (&s); 3293 s.Printf("\nFunction methods:\n"); m_function_method_index.Dump (&s); 3294 s.Printf("\nFunction selectors:\n"); m_function_selector_index.Dump (&s); 3295 s.Printf("\nObjective C class selectors:\n"); m_objc_class_selectors_index.Dump (&s); 3296 s.Printf("\nGlobals and statics:\n"); m_global_index.Dump (&s); 3297 s.Printf("\nTypes:\n"); m_type_index.Dump (&s); 3298 s.Printf("\nNamepaces:\n"); m_namespace_index.Dump (&s); 3299 #endif 3300 } 3301 } 3302 3303 bool 3304 SymbolFileDWARF::NamespaceDeclMatchesThisSymbolFile (const ClangNamespaceDecl *namespace_decl) 3305 { 3306 if (namespace_decl == NULL) 3307 { 3308 // Invalid namespace decl which means we aren't matching only things 3309 // in this symbol file, so return true to indicate it matches this 3310 // symbol file. 3311 return true; 3312 } 3313 3314 clang::ASTContext *namespace_ast = namespace_decl->GetASTContext(); 3315 3316 if (namespace_ast == NULL) 3317 return true; // No AST in the "namespace_decl", return true since it 3318 // could then match any symbol file, including this one 3319 3320 if (namespace_ast == GetClangASTContext().getASTContext()) 3321 return true; // The ASTs match, return true 3322 3323 // The namespace AST was valid, and it does not match... 3324 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3325 3326 if (log) 3327 GetObjectFile()->GetModule()->LogMessage(log, "Valid namespace does not match symbol file"); 3328 3329 return false; 3330 } 3331 3332 bool 3333 SymbolFileDWARF::DIEIsInNamespace (const ClangNamespaceDecl *namespace_decl, 3334 DWARFCompileUnit* cu, 3335 const DWARFDebugInfoEntry* die) 3336 { 3337 // No namespace specified, so the answer is 3338 if (namespace_decl == NULL) 3339 return true; 3340 3341 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3342 3343 const DWARFDebugInfoEntry *decl_ctx_die = NULL; 3344 clang::DeclContext *die_clang_decl_ctx = GetClangDeclContextContainingDIE (cu, die, &decl_ctx_die); 3345 if (decl_ctx_die) 3346 { 3347 clang::NamespaceDecl *clang_namespace_decl = namespace_decl->GetNamespaceDecl(); 3348 3349 if (clang_namespace_decl) 3350 { 3351 if (decl_ctx_die->Tag() != DW_TAG_namespace) 3352 { 3353 if (log) 3354 GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent is not a namespace"); 3355 return false; 3356 } 3357 3358 if (clang_namespace_decl == die_clang_decl_ctx) 3359 return true; 3360 else 3361 return false; 3362 } 3363 else 3364 { 3365 // We have a namespace_decl that was not NULL but it contained 3366 // a NULL "clang::NamespaceDecl", so this means the global namespace 3367 // So as long the contained decl context DIE isn't a namespace 3368 // we should be ok. 3369 if (decl_ctx_die->Tag() != DW_TAG_namespace) 3370 return true; 3371 } 3372 } 3373 3374 if (log) 3375 GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent doesn't exist"); 3376 3377 return false; 3378 } 3379 uint32_t 3380 SymbolFileDWARF::FindGlobalVariables (const ConstString &name, const lldb_private::ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables) 3381 { 3382 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3383 3384 if (log) 3385 GetObjectFile()->GetModule()->LogMessage (log, 3386 "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables)", 3387 name.GetCString(), 3388 static_cast<const void*>(namespace_decl), 3389 append, max_matches); 3390 3391 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) 3392 return 0; 3393 3394 DWARFDebugInfo* info = DebugInfo(); 3395 if (info == NULL) 3396 return 0; 3397 3398 // If we aren't appending the results to this list, then clear the list 3399 if (!append) 3400 variables.Clear(); 3401 3402 // Remember how many variables are in the list before we search in case 3403 // we are appending the results to a variable list. 3404 const uint32_t original_size = variables.GetSize(); 3405 3406 DIEArray die_offsets; 3407 3408 if (m_using_apple_tables) 3409 { 3410 if (m_apple_names_ap.get()) 3411 { 3412 const char *name_cstr = name.GetCString(); 3413 llvm::StringRef basename; 3414 llvm::StringRef context; 3415 3416 if (!CPPLanguageRuntime::ExtractContextAndIdentifier(name_cstr, context, basename)) 3417 basename = name_cstr; 3418 3419 m_apple_names_ap->FindByName (basename.data(), die_offsets); 3420 } 3421 } 3422 else 3423 { 3424 // Index the DWARF if we haven't already 3425 if (!m_indexed) 3426 Index (); 3427 3428 m_global_index.Find (name, die_offsets); 3429 } 3430 3431 const size_t num_die_matches = die_offsets.size(); 3432 if (num_die_matches) 3433 { 3434 SymbolContext sc; 3435 sc.module_sp = m_obj_file->GetModule(); 3436 assert (sc.module_sp); 3437 3438 DWARFDebugInfo* debug_info = DebugInfo(); 3439 DWARFCompileUnit* dwarf_cu = NULL; 3440 const DWARFDebugInfoEntry* die = NULL; 3441 bool done = false; 3442 for (size_t i=0; i<num_die_matches && !done; ++i) 3443 { 3444 const dw_offset_t die_offset = die_offsets[i]; 3445 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3446 3447 if (die) 3448 { 3449 switch (die->Tag()) 3450 { 3451 default: 3452 case DW_TAG_subprogram: 3453 case DW_TAG_inlined_subroutine: 3454 case DW_TAG_try_block: 3455 case DW_TAG_catch_block: 3456 break; 3457 3458 case DW_TAG_variable: 3459 { 3460 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 3461 3462 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 3463 continue; 3464 3465 ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables); 3466 3467 if (variables.GetSize() - original_size >= max_matches) 3468 done = true; 3469 } 3470 break; 3471 } 3472 } 3473 else 3474 { 3475 if (m_using_apple_tables) 3476 { 3477 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')\n", 3478 die_offset, name.GetCString()); 3479 } 3480 } 3481 } 3482 } 3483 3484 // Return the number of variable that were appended to the list 3485 const uint32_t num_matches = variables.GetSize() - original_size; 3486 if (log && num_matches > 0) 3487 { 3488 GetObjectFile()->GetModule()->LogMessage (log, 3489 "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables) => %u", 3490 name.GetCString(), 3491 static_cast<const void*>(namespace_decl), 3492 append, max_matches, 3493 num_matches); 3494 } 3495 return num_matches; 3496 } 3497 3498 uint32_t 3499 SymbolFileDWARF::FindGlobalVariables(const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables) 3500 { 3501 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3502 3503 if (log) 3504 { 3505 GetObjectFile()->GetModule()->LogMessage (log, 3506 "SymbolFileDWARF::FindGlobalVariables (regex=\"%s\", append=%u, max_matches=%u, variables)", 3507 regex.GetText(), append, 3508 max_matches); 3509 } 3510 3511 DWARFDebugInfo* info = DebugInfo(); 3512 if (info == NULL) 3513 return 0; 3514 3515 // If we aren't appending the results to this list, then clear the list 3516 if (!append) 3517 variables.Clear(); 3518 3519 // Remember how many variables are in the list before we search in case 3520 // we are appending the results to a variable list. 3521 const uint32_t original_size = variables.GetSize(); 3522 3523 DIEArray die_offsets; 3524 3525 if (m_using_apple_tables) 3526 { 3527 if (m_apple_names_ap.get()) 3528 { 3529 DWARFMappedHash::DIEInfoArray hash_data_array; 3530 if (m_apple_names_ap->AppendAllDIEsThatMatchingRegex (regex, hash_data_array)) 3531 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); 3532 } 3533 } 3534 else 3535 { 3536 // Index the DWARF if we haven't already 3537 if (!m_indexed) 3538 Index (); 3539 3540 m_global_index.Find (regex, die_offsets); 3541 } 3542 3543 SymbolContext sc; 3544 sc.module_sp = m_obj_file->GetModule(); 3545 assert (sc.module_sp); 3546 3547 DWARFCompileUnit* dwarf_cu = NULL; 3548 const DWARFDebugInfoEntry* die = NULL; 3549 const size_t num_matches = die_offsets.size(); 3550 if (num_matches) 3551 { 3552 DWARFDebugInfo* debug_info = DebugInfo(); 3553 for (size_t i=0; i<num_matches; ++i) 3554 { 3555 const dw_offset_t die_offset = die_offsets[i]; 3556 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3557 3558 if (die) 3559 { 3560 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 3561 3562 ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables); 3563 3564 if (variables.GetSize() - original_size >= max_matches) 3565 break; 3566 } 3567 else 3568 { 3569 if (m_using_apple_tables) 3570 { 3571 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for regex '%s')\n", 3572 die_offset, regex.GetText()); 3573 } 3574 } 3575 } 3576 } 3577 3578 // Return the number of variable that were appended to the list 3579 return variables.GetSize() - original_size; 3580 } 3581 3582 3583 bool 3584 SymbolFileDWARF::ResolveFunction (dw_offset_t die_offset, 3585 DWARFCompileUnit *&dwarf_cu, 3586 bool include_inlines, 3587 SymbolContextList& sc_list) 3588 { 3589 const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3590 return ResolveFunction (dwarf_cu, die, include_inlines, sc_list); 3591 } 3592 3593 3594 bool 3595 SymbolFileDWARF::ResolveFunction (DWARFCompileUnit *cu, 3596 const DWARFDebugInfoEntry *die, 3597 bool include_inlines, 3598 SymbolContextList& sc_list) 3599 { 3600 SymbolContext sc; 3601 3602 if (die == NULL) 3603 return false; 3604 3605 // If we were passed a die that is not a function, just return false... 3606 if (! (die->Tag() == DW_TAG_subprogram || (include_inlines && die->Tag() == DW_TAG_inlined_subroutine))) 3607 return false; 3608 3609 const DWARFDebugInfoEntry* inlined_die = NULL; 3610 if (die->Tag() == DW_TAG_inlined_subroutine) 3611 { 3612 inlined_die = die; 3613 3614 while ((die = die->GetParent()) != NULL) 3615 { 3616 if (die->Tag() == DW_TAG_subprogram) 3617 break; 3618 } 3619 } 3620 assert (die && die->Tag() == DW_TAG_subprogram); 3621 if (GetFunction (cu, die, sc)) 3622 { 3623 Address addr; 3624 // Parse all blocks if needed 3625 if (inlined_die) 3626 { 3627 Block &function_block = sc.function->GetBlock (true); 3628 sc.block = function_block.FindBlockByID (MakeUserID(inlined_die->GetOffset())); 3629 if (sc.block == NULL) 3630 sc.block = function_block.FindBlockByID (inlined_die->GetOffset()); 3631 if (sc.block == NULL || sc.block->GetStartAddress (addr) == false) 3632 addr.Clear(); 3633 } 3634 else 3635 { 3636 sc.block = NULL; 3637 addr = sc.function->GetAddressRange().GetBaseAddress(); 3638 } 3639 3640 if (addr.IsValid()) 3641 { 3642 sc_list.Append(sc); 3643 return true; 3644 } 3645 } 3646 3647 return false; 3648 } 3649 3650 void 3651 SymbolFileDWARF::FindFunctions (const ConstString &name, 3652 const NameToDIE &name_to_die, 3653 bool include_inlines, 3654 SymbolContextList& sc_list) 3655 { 3656 DIEArray die_offsets; 3657 if (name_to_die.Find (name, die_offsets)) 3658 { 3659 ParseFunctions (die_offsets, include_inlines, sc_list); 3660 } 3661 } 3662 3663 3664 void 3665 SymbolFileDWARF::FindFunctions (const RegularExpression ®ex, 3666 const NameToDIE &name_to_die, 3667 bool include_inlines, 3668 SymbolContextList& sc_list) 3669 { 3670 DIEArray die_offsets; 3671 if (name_to_die.Find (regex, die_offsets)) 3672 { 3673 ParseFunctions (die_offsets, include_inlines, sc_list); 3674 } 3675 } 3676 3677 3678 void 3679 SymbolFileDWARF::FindFunctions (const RegularExpression ®ex, 3680 const DWARFMappedHash::MemoryTable &memory_table, 3681 bool include_inlines, 3682 SymbolContextList& sc_list) 3683 { 3684 DIEArray die_offsets; 3685 DWARFMappedHash::DIEInfoArray hash_data_array; 3686 if (memory_table.AppendAllDIEsThatMatchingRegex (regex, hash_data_array)) 3687 { 3688 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); 3689 ParseFunctions (die_offsets, include_inlines, sc_list); 3690 } 3691 } 3692 3693 void 3694 SymbolFileDWARF::ParseFunctions (const DIEArray &die_offsets, 3695 bool include_inlines, 3696 SymbolContextList& sc_list) 3697 { 3698 const size_t num_matches = die_offsets.size(); 3699 if (num_matches) 3700 { 3701 DWARFCompileUnit* dwarf_cu = NULL; 3702 for (size_t i=0; i<num_matches; ++i) 3703 { 3704 const dw_offset_t die_offset = die_offsets[i]; 3705 ResolveFunction (die_offset, dwarf_cu, include_inlines, sc_list); 3706 } 3707 } 3708 } 3709 3710 bool 3711 SymbolFileDWARF::FunctionDieMatchesPartialName (const DWARFDebugInfoEntry* die, 3712 const DWARFCompileUnit *dwarf_cu, 3713 uint32_t name_type_mask, 3714 const char *partial_name, 3715 const char *base_name_start, 3716 const char *base_name_end) 3717 { 3718 // If we are looking only for methods, throw away all the ones that are or aren't in C++ classes: 3719 if (name_type_mask == eFunctionNameTypeMethod || name_type_mask == eFunctionNameTypeBase) 3720 { 3721 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIEOffset(die->GetOffset()); 3722 if (!containing_decl_ctx) 3723 return false; 3724 3725 bool is_cxx_method = DeclKindIsCXXClass(containing_decl_ctx->getDeclKind()); 3726 3727 if (name_type_mask == eFunctionNameTypeMethod) 3728 { 3729 if (is_cxx_method == false) 3730 return false; 3731 } 3732 3733 if (name_type_mask == eFunctionNameTypeBase) 3734 { 3735 if (is_cxx_method == true) 3736 return false; 3737 } 3738 } 3739 3740 // Now we need to check whether the name we got back for this type matches the extra specifications 3741 // that were in the name we're looking up: 3742 if (base_name_start != partial_name || *base_name_end != '\0') 3743 { 3744 // First see if the stuff to the left matches the full name. To do that let's see if 3745 // we can pull out the mips linkage name attribute: 3746 3747 Mangled best_name; 3748 DWARFDebugInfoEntry::Attributes attributes; 3749 DWARFFormValue form_value; 3750 die->GetAttributes(this, dwarf_cu, NULL, attributes); 3751 uint32_t idx = attributes.FindAttributeIndex(DW_AT_MIPS_linkage_name); 3752 if (idx == UINT32_MAX) 3753 idx = attributes.FindAttributeIndex(DW_AT_linkage_name); 3754 if (idx != UINT32_MAX) 3755 { 3756 if (attributes.ExtractFormValueAtIndex(this, idx, form_value)) 3757 { 3758 const char *mangled_name = form_value.AsCString(&get_debug_str_data()); 3759 if (mangled_name) 3760 best_name.SetValue (ConstString(mangled_name), true); 3761 } 3762 } 3763 3764 if (!best_name) 3765 { 3766 idx = attributes.FindAttributeIndex(DW_AT_name); 3767 if (idx != UINT32_MAX && attributes.ExtractFormValueAtIndex(this, idx, form_value)) 3768 { 3769 const char *name = form_value.AsCString(&get_debug_str_data()); 3770 best_name.SetValue (ConstString(name), false); 3771 } 3772 } 3773 3774 if (best_name.GetDemangledName()) 3775 { 3776 const char *demangled = best_name.GetDemangledName().GetCString(); 3777 if (demangled) 3778 { 3779 std::string name_no_parens(partial_name, base_name_end - partial_name); 3780 const char *partial_in_demangled = strstr (demangled, name_no_parens.c_str()); 3781 if (partial_in_demangled == NULL) 3782 return false; 3783 else 3784 { 3785 // Sort out the case where our name is something like "Process::Destroy" and the match is 3786 // "SBProcess::Destroy" - that shouldn't be a match. We should really always match on 3787 // namespace boundaries... 3788 3789 if (partial_name[0] == ':' && partial_name[1] == ':') 3790 { 3791 // The partial name was already on a namespace boundary so all matches are good. 3792 return true; 3793 } 3794 else if (partial_in_demangled == demangled) 3795 { 3796 // They both start the same, so this is an good match. 3797 return true; 3798 } 3799 else 3800 { 3801 if (partial_in_demangled - demangled == 1) 3802 { 3803 // Only one character difference, can't be a namespace boundary... 3804 return false; 3805 } 3806 else if (*(partial_in_demangled - 1) == ':' && *(partial_in_demangled - 2) == ':') 3807 { 3808 // We are on a namespace boundary, so this is also good. 3809 return true; 3810 } 3811 else 3812 return false; 3813 } 3814 } 3815 } 3816 } 3817 } 3818 3819 return true; 3820 } 3821 3822 uint32_t 3823 SymbolFileDWARF::FindFunctions (const ConstString &name, 3824 const lldb_private::ClangNamespaceDecl *namespace_decl, 3825 uint32_t name_type_mask, 3826 bool include_inlines, 3827 bool append, 3828 SymbolContextList& sc_list) 3829 { 3830 Timer scoped_timer (__PRETTY_FUNCTION__, 3831 "SymbolFileDWARF::FindFunctions (name = '%s')", 3832 name.AsCString()); 3833 3834 // eFunctionNameTypeAuto should be pre-resolved by a call to Module::PrepareForFunctionNameLookup() 3835 assert ((name_type_mask & eFunctionNameTypeAuto) == 0); 3836 3837 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3838 3839 if (log) 3840 { 3841 GetObjectFile()->GetModule()->LogMessage (log, 3842 "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list)", 3843 name.GetCString(), 3844 name_type_mask, 3845 append); 3846 } 3847 3848 // If we aren't appending the results to this list, then clear the list 3849 if (!append) 3850 sc_list.Clear(); 3851 3852 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) 3853 return 0; 3854 3855 // If name is empty then we won't find anything. 3856 if (name.IsEmpty()) 3857 return 0; 3858 3859 // Remember how many sc_list are in the list before we search in case 3860 // we are appending the results to a variable list. 3861 3862 const char *name_cstr = name.GetCString(); 3863 3864 const uint32_t original_size = sc_list.GetSize(); 3865 3866 DWARFDebugInfo* info = DebugInfo(); 3867 if (info == NULL) 3868 return 0; 3869 3870 DWARFCompileUnit *dwarf_cu = NULL; 3871 std::set<const DWARFDebugInfoEntry *> resolved_dies; 3872 if (m_using_apple_tables) 3873 { 3874 if (m_apple_names_ap.get()) 3875 { 3876 3877 DIEArray die_offsets; 3878 3879 uint32_t num_matches = 0; 3880 3881 if (name_type_mask & eFunctionNameTypeFull) 3882 { 3883 // If they asked for the full name, match what they typed. At some point we may 3884 // want to canonicalize this (strip double spaces, etc. For now, we just add all the 3885 // dies that we find by exact match. 3886 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets); 3887 for (uint32_t i = 0; i < num_matches; i++) 3888 { 3889 const dw_offset_t die_offset = die_offsets[i]; 3890 const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3891 if (die) 3892 { 3893 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 3894 continue; 3895 3896 if (resolved_dies.find(die) == resolved_dies.end()) 3897 { 3898 if (ResolveFunction (dwarf_cu, die, include_inlines, sc_list)) 3899 resolved_dies.insert(die); 3900 } 3901 } 3902 else 3903 { 3904 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')", 3905 die_offset, name_cstr); 3906 } 3907 } 3908 } 3909 3910 if (name_type_mask & eFunctionNameTypeSelector) 3911 { 3912 if (namespace_decl && *namespace_decl) 3913 return 0; // no selectors in namespaces 3914 3915 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets); 3916 // Now make sure these are actually ObjC methods. In this case we can simply look up the name, 3917 // and if it is an ObjC method name, we're good. 3918 3919 for (uint32_t i = 0; i < num_matches; i++) 3920 { 3921 const dw_offset_t die_offset = die_offsets[i]; 3922 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3923 if (die) 3924 { 3925 const char *die_name = die->GetName(this, dwarf_cu); 3926 if (ObjCLanguageRuntime::IsPossibleObjCMethodName(die_name)) 3927 { 3928 if (resolved_dies.find(die) == resolved_dies.end()) 3929 { 3930 if (ResolveFunction (dwarf_cu, die, include_inlines, sc_list)) 3931 resolved_dies.insert(die); 3932 } 3933 } 3934 } 3935 else 3936 { 3937 GetObjectFile()->GetModule()->ReportError ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')", 3938 die_offset, name_cstr); 3939 } 3940 } 3941 die_offsets.clear(); 3942 } 3943 3944 if (((name_type_mask & eFunctionNameTypeMethod) && !namespace_decl) || name_type_mask & eFunctionNameTypeBase) 3945 { 3946 // The apple_names table stores just the "base name" of C++ methods in the table. So we have to 3947 // extract the base name, look that up, and if there is any other information in the name we were 3948 // passed in we have to post-filter based on that. 3949 3950 // FIXME: Arrange the logic above so that we don't calculate the base name twice: 3951 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets); 3952 3953 for (uint32_t i = 0; i < num_matches; i++) 3954 { 3955 const dw_offset_t die_offset = die_offsets[i]; 3956 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3957 if (die) 3958 { 3959 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 3960 continue; 3961 3962 // If we get to here, the die is good, and we should add it: 3963 if (resolved_dies.find(die) == resolved_dies.end()) 3964 if (ResolveFunction (dwarf_cu, die, include_inlines, sc_list)) 3965 { 3966 bool keep_die = true; 3967 if ((name_type_mask & (eFunctionNameTypeBase|eFunctionNameTypeMethod)) != (eFunctionNameTypeBase|eFunctionNameTypeMethod)) 3968 { 3969 // We are looking for either basenames or methods, so we need to 3970 // trim out the ones we won't want by looking at the type 3971 SymbolContext sc; 3972 if (sc_list.GetLastContext(sc)) 3973 { 3974 if (sc.block) 3975 { 3976 // We have an inlined function 3977 } 3978 else if (sc.function) 3979 { 3980 Type *type = sc.function->GetType(); 3981 3982 if (type) 3983 { 3984 clang::DeclContext* decl_ctx = GetClangDeclContextContainingTypeUID (type->GetID()); 3985 if (decl_ctx->isRecord()) 3986 { 3987 if (name_type_mask & eFunctionNameTypeBase) 3988 { 3989 sc_list.RemoveContextAtIndex(sc_list.GetSize()-1); 3990 keep_die = false; 3991 } 3992 } 3993 else 3994 { 3995 if (name_type_mask & eFunctionNameTypeMethod) 3996 { 3997 sc_list.RemoveContextAtIndex(sc_list.GetSize()-1); 3998 keep_die = false; 3999 } 4000 } 4001 } 4002 else 4003 { 4004 GetObjectFile()->GetModule()->ReportWarning ("function at die offset 0x%8.8x had no function type", 4005 die_offset); 4006 } 4007 } 4008 } 4009 } 4010 if (keep_die) 4011 resolved_dies.insert(die); 4012 } 4013 } 4014 else 4015 { 4016 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')", 4017 die_offset, name_cstr); 4018 } 4019 } 4020 die_offsets.clear(); 4021 } 4022 } 4023 } 4024 else 4025 { 4026 4027 // Index the DWARF if we haven't already 4028 if (!m_indexed) 4029 Index (); 4030 4031 if (name_type_mask & eFunctionNameTypeFull) 4032 { 4033 FindFunctions (name, m_function_fullname_index, include_inlines, sc_list); 4034 4035 // FIXME Temporary workaround for global/anonymous namespace 4036 // functions on FreeBSD and Linux 4037 #if defined (__FreeBSD__) || defined (__linux__) 4038 // If we didn't find any functions in the global namespace try 4039 // looking in the basename index but ignore any returned 4040 // functions that have a namespace (ie. mangled names starting with 4041 // '_ZN') but keep functions which have an anonymous namespace 4042 if (sc_list.GetSize() == 0) 4043 { 4044 SymbolContextList temp_sc_list; 4045 FindFunctions (name, m_function_basename_index, include_inlines, temp_sc_list); 4046 if (!namespace_decl) 4047 { 4048 SymbolContext sc; 4049 for (uint32_t i = 0; i < temp_sc_list.GetSize(); i++) 4050 { 4051 if (temp_sc_list.GetContextAtIndex(i, sc)) 4052 { 4053 ConstString mangled_name = sc.GetFunctionName(Mangled::ePreferMangled); 4054 ConstString demangled_name = sc.GetFunctionName(Mangled::ePreferDemangled); 4055 if (strncmp(mangled_name.GetCString(), "_ZN", 3) || 4056 !strncmp(demangled_name.GetCString(), "(anonymous namespace)", 21)) 4057 { 4058 sc_list.Append(sc); 4059 } 4060 } 4061 } 4062 } 4063 } 4064 #endif 4065 } 4066 DIEArray die_offsets; 4067 DWARFCompileUnit *dwarf_cu = NULL; 4068 4069 if (name_type_mask & eFunctionNameTypeBase) 4070 { 4071 uint32_t num_base = m_function_basename_index.Find(name, die_offsets); 4072 for (uint32_t i = 0; i < num_base; i++) 4073 { 4074 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu); 4075 if (die) 4076 { 4077 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 4078 continue; 4079 4080 // If we get to here, the die is good, and we should add it: 4081 if (resolved_dies.find(die) == resolved_dies.end()) 4082 { 4083 if (ResolveFunction (dwarf_cu, die, include_inlines, sc_list)) 4084 resolved_dies.insert(die); 4085 } 4086 } 4087 } 4088 die_offsets.clear(); 4089 } 4090 4091 if (name_type_mask & eFunctionNameTypeMethod) 4092 { 4093 if (namespace_decl && *namespace_decl) 4094 return 0; // no methods in namespaces 4095 4096 uint32_t num_base = m_function_method_index.Find(name, die_offsets); 4097 { 4098 for (uint32_t i = 0; i < num_base; i++) 4099 { 4100 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu); 4101 if (die) 4102 { 4103 // If we get to here, the die is good, and we should add it: 4104 if (resolved_dies.find(die) == resolved_dies.end()) 4105 { 4106 if (ResolveFunction (dwarf_cu, die, include_inlines, sc_list)) 4107 resolved_dies.insert(die); 4108 } 4109 } 4110 } 4111 } 4112 die_offsets.clear(); 4113 } 4114 4115 if ((name_type_mask & eFunctionNameTypeSelector) && (!namespace_decl || !*namespace_decl)) 4116 { 4117 FindFunctions (name, m_function_selector_index, include_inlines, sc_list); 4118 } 4119 4120 } 4121 4122 // Return the number of variable that were appended to the list 4123 const uint32_t num_matches = sc_list.GetSize() - original_size; 4124 4125 if (log && num_matches > 0) 4126 { 4127 GetObjectFile()->GetModule()->LogMessage (log, 4128 "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, include_inlines=%d, append=%u, sc_list) => %u", 4129 name.GetCString(), 4130 name_type_mask, 4131 include_inlines, 4132 append, 4133 num_matches); 4134 } 4135 return num_matches; 4136 } 4137 4138 uint32_t 4139 SymbolFileDWARF::FindFunctions(const RegularExpression& regex, bool include_inlines, bool append, SymbolContextList& sc_list) 4140 { 4141 Timer scoped_timer (__PRETTY_FUNCTION__, 4142 "SymbolFileDWARF::FindFunctions (regex = '%s')", 4143 regex.GetText()); 4144 4145 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 4146 4147 if (log) 4148 { 4149 GetObjectFile()->GetModule()->LogMessage (log, 4150 "SymbolFileDWARF::FindFunctions (regex=\"%s\", append=%u, sc_list)", 4151 regex.GetText(), 4152 append); 4153 } 4154 4155 4156 // If we aren't appending the results to this list, then clear the list 4157 if (!append) 4158 sc_list.Clear(); 4159 4160 // Remember how many sc_list are in the list before we search in case 4161 // we are appending the results to a variable list. 4162 uint32_t original_size = sc_list.GetSize(); 4163 4164 if (m_using_apple_tables) 4165 { 4166 if (m_apple_names_ap.get()) 4167 FindFunctions (regex, *m_apple_names_ap, include_inlines, sc_list); 4168 } 4169 else 4170 { 4171 // Index the DWARF if we haven't already 4172 if (!m_indexed) 4173 Index (); 4174 4175 FindFunctions (regex, m_function_basename_index, include_inlines, sc_list); 4176 4177 FindFunctions (regex, m_function_fullname_index, include_inlines, sc_list); 4178 } 4179 4180 // Return the number of variable that were appended to the list 4181 return sc_list.GetSize() - original_size; 4182 } 4183 4184 uint32_t 4185 SymbolFileDWARF::FindTypes (const SymbolContext& sc, 4186 const ConstString &name, 4187 const lldb_private::ClangNamespaceDecl *namespace_decl, 4188 bool append, 4189 uint32_t max_matches, 4190 TypeList& types) 4191 { 4192 DWARFDebugInfo* info = DebugInfo(); 4193 if (info == NULL) 4194 return 0; 4195 4196 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 4197 4198 if (log) 4199 { 4200 if (namespace_decl) 4201 GetObjectFile()->GetModule()->LogMessage (log, 4202 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list)", 4203 name.GetCString(), 4204 static_cast<void*>(namespace_decl->GetNamespaceDecl()), 4205 namespace_decl->GetQualifiedName().c_str(), 4206 append, max_matches); 4207 else 4208 GetObjectFile()->GetModule()->LogMessage (log, 4209 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list)", 4210 name.GetCString(), append, 4211 max_matches); 4212 } 4213 4214 // If we aren't appending the results to this list, then clear the list 4215 if (!append) 4216 types.Clear(); 4217 4218 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) 4219 return 0; 4220 4221 DIEArray die_offsets; 4222 4223 if (m_using_apple_tables) 4224 { 4225 if (m_apple_types_ap.get()) 4226 { 4227 const char *name_cstr = name.GetCString(); 4228 m_apple_types_ap->FindByName (name_cstr, die_offsets); 4229 } 4230 } 4231 else 4232 { 4233 if (!m_indexed) 4234 Index (); 4235 4236 m_type_index.Find (name, die_offsets); 4237 } 4238 4239 const size_t num_die_matches = die_offsets.size(); 4240 4241 if (num_die_matches) 4242 { 4243 const uint32_t initial_types_size = types.GetSize(); 4244 DWARFCompileUnit* dwarf_cu = NULL; 4245 const DWARFDebugInfoEntry* die = NULL; 4246 DWARFDebugInfo* debug_info = DebugInfo(); 4247 for (size_t i=0; i<num_die_matches; ++i) 4248 { 4249 const dw_offset_t die_offset = die_offsets[i]; 4250 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 4251 4252 if (die) 4253 { 4254 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 4255 continue; 4256 4257 Type *matching_type = ResolveType (dwarf_cu, die); 4258 if (matching_type) 4259 { 4260 // We found a type pointer, now find the shared pointer form our type list 4261 types.InsertUnique (matching_type->shared_from_this()); 4262 if (types.GetSize() >= max_matches) 4263 break; 4264 } 4265 } 4266 else 4267 { 4268 if (m_using_apple_tables) 4269 { 4270 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n", 4271 die_offset, name.GetCString()); 4272 } 4273 } 4274 4275 } 4276 const uint32_t num_matches = types.GetSize() - initial_types_size; 4277 if (log && num_matches) 4278 { 4279 if (namespace_decl) 4280 { 4281 GetObjectFile()->GetModule()->LogMessage (log, 4282 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list) => %u", 4283 name.GetCString(), 4284 static_cast<void*>(namespace_decl->GetNamespaceDecl()), 4285 namespace_decl->GetQualifiedName().c_str(), 4286 append, max_matches, 4287 num_matches); 4288 } 4289 else 4290 { 4291 GetObjectFile()->GetModule()->LogMessage (log, 4292 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list) => %u", 4293 name.GetCString(), 4294 append, max_matches, 4295 num_matches); 4296 } 4297 } 4298 return num_matches; 4299 } 4300 return 0; 4301 } 4302 4303 4304 ClangNamespaceDecl 4305 SymbolFileDWARF::FindNamespace (const SymbolContext& sc, 4306 const ConstString &name, 4307 const lldb_private::ClangNamespaceDecl *parent_namespace_decl) 4308 { 4309 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 4310 4311 if (log) 4312 { 4313 GetObjectFile()->GetModule()->LogMessage (log, 4314 "SymbolFileDWARF::FindNamespace (sc, name=\"%s\")", 4315 name.GetCString()); 4316 } 4317 4318 if (!NamespaceDeclMatchesThisSymbolFile(parent_namespace_decl)) 4319 return ClangNamespaceDecl(); 4320 4321 ClangNamespaceDecl namespace_decl; 4322 DWARFDebugInfo* info = DebugInfo(); 4323 if (info) 4324 { 4325 DIEArray die_offsets; 4326 4327 // Index if we already haven't to make sure the compile units 4328 // get indexed and make their global DIE index list 4329 if (m_using_apple_tables) 4330 { 4331 if (m_apple_namespaces_ap.get()) 4332 { 4333 const char *name_cstr = name.GetCString(); 4334 m_apple_namespaces_ap->FindByName (name_cstr, die_offsets); 4335 } 4336 } 4337 else 4338 { 4339 if (!m_indexed) 4340 Index (); 4341 4342 m_namespace_index.Find (name, die_offsets); 4343 } 4344 4345 DWARFCompileUnit* dwarf_cu = NULL; 4346 const DWARFDebugInfoEntry* die = NULL; 4347 const size_t num_matches = die_offsets.size(); 4348 if (num_matches) 4349 { 4350 DWARFDebugInfo* debug_info = DebugInfo(); 4351 for (size_t i=0; i<num_matches; ++i) 4352 { 4353 const dw_offset_t die_offset = die_offsets[i]; 4354 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 4355 4356 if (die) 4357 { 4358 if (parent_namespace_decl && !DIEIsInNamespace (parent_namespace_decl, dwarf_cu, die)) 4359 continue; 4360 4361 clang::NamespaceDecl *clang_namespace_decl = ResolveNamespaceDIE (dwarf_cu, die); 4362 if (clang_namespace_decl) 4363 { 4364 namespace_decl.SetASTContext (GetClangASTContext().getASTContext()); 4365 namespace_decl.SetNamespaceDecl (clang_namespace_decl); 4366 break; 4367 } 4368 } 4369 else 4370 { 4371 if (m_using_apple_tables) 4372 { 4373 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_namespaces accelerator table had bad die 0x%8.8x for '%s')\n", 4374 die_offset, name.GetCString()); 4375 } 4376 } 4377 4378 } 4379 } 4380 } 4381 if (log && namespace_decl.GetNamespaceDecl()) 4382 { 4383 GetObjectFile()->GetModule()->LogMessage (log, 4384 "SymbolFileDWARF::FindNamespace (sc, name=\"%s\") => clang::NamespaceDecl(%p) \"%s\"", 4385 name.GetCString(), 4386 static_cast<const void*>(namespace_decl.GetNamespaceDecl()), 4387 namespace_decl.GetQualifiedName().c_str()); 4388 } 4389 4390 return namespace_decl; 4391 } 4392 4393 uint32_t 4394 SymbolFileDWARF::FindTypes(std::vector<dw_offset_t> die_offsets, uint32_t max_matches, TypeList& types) 4395 { 4396 // Remember how many sc_list are in the list before we search in case 4397 // we are appending the results to a variable list. 4398 uint32_t original_size = types.GetSize(); 4399 4400 const uint32_t num_die_offsets = die_offsets.size(); 4401 // Parse all of the types we found from the pubtypes matches 4402 uint32_t i; 4403 uint32_t num_matches = 0; 4404 for (i = 0; i < num_die_offsets; ++i) 4405 { 4406 Type *matching_type = ResolveTypeUID (die_offsets[i]); 4407 if (matching_type) 4408 { 4409 // We found a type pointer, now find the shared pointer form our type list 4410 types.InsertUnique (matching_type->shared_from_this()); 4411 ++num_matches; 4412 if (num_matches >= max_matches) 4413 break; 4414 } 4415 } 4416 4417 // Return the number of variable that were appended to the list 4418 return types.GetSize() - original_size; 4419 } 4420 4421 4422 size_t 4423 SymbolFileDWARF::ParseChildParameters (const SymbolContext& sc, 4424 clang::DeclContext *containing_decl_ctx, 4425 DWARFCompileUnit* dwarf_cu, 4426 const DWARFDebugInfoEntry *parent_die, 4427 bool skip_artificial, 4428 bool &is_static, 4429 bool &is_variadic, 4430 std::vector<ClangASTType>& function_param_types, 4431 std::vector<clang::ParmVarDecl*>& function_param_decls, 4432 unsigned &type_quals) // , 4433 // ClangASTContext::TemplateParameterInfos &template_param_infos)) 4434 { 4435 if (parent_die == NULL) 4436 return 0; 4437 4438 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64()); 4439 4440 size_t arg_idx = 0; 4441 const DWARFDebugInfoEntry *die; 4442 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 4443 { 4444 dw_tag_t tag = die->Tag(); 4445 switch (tag) 4446 { 4447 case DW_TAG_formal_parameter: 4448 { 4449 DWARFDebugInfoEntry::Attributes attributes; 4450 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); 4451 if (num_attributes > 0) 4452 { 4453 const char *name = NULL; 4454 Declaration decl; 4455 dw_offset_t param_type_die_offset = DW_INVALID_OFFSET; 4456 bool is_artificial = false; 4457 // one of None, Auto, Register, Extern, Static, PrivateExtern 4458 4459 clang::StorageClass storage = clang::SC_None; 4460 uint32_t i; 4461 for (i=0; i<num_attributes; ++i) 4462 { 4463 const dw_attr_t attr = attributes.AttributeAtIndex(i); 4464 DWARFFormValue form_value; 4465 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 4466 { 4467 switch (attr) 4468 { 4469 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 4470 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 4471 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 4472 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; 4473 case DW_AT_type: param_type_die_offset = form_value.Reference(); break; 4474 case DW_AT_artificial: is_artificial = form_value.Boolean(); break; 4475 case DW_AT_location: 4476 // if (form_value.BlockData()) 4477 // { 4478 // const DWARFDataExtractor& debug_info_data = debug_info(); 4479 // uint32_t block_length = form_value.Unsigned(); 4480 // DWARFDataExtractor location(debug_info_data, form_value.BlockData() - debug_info_data.GetDataStart(), block_length); 4481 // } 4482 // else 4483 // { 4484 // } 4485 // break; 4486 case DW_AT_const_value: 4487 case DW_AT_default_value: 4488 case DW_AT_description: 4489 case DW_AT_endianity: 4490 case DW_AT_is_optional: 4491 case DW_AT_segment: 4492 case DW_AT_variable_parameter: 4493 default: 4494 case DW_AT_abstract_origin: 4495 case DW_AT_sibling: 4496 break; 4497 } 4498 } 4499 } 4500 4501 bool skip = false; 4502 if (skip_artificial) 4503 { 4504 if (is_artificial) 4505 { 4506 // In order to determine if a C++ member function is 4507 // "const" we have to look at the const-ness of "this"... 4508 // Ugly, but that 4509 if (arg_idx == 0) 4510 { 4511 if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind())) 4512 { 4513 // Often times compilers omit the "this" name for the 4514 // specification DIEs, so we can't rely upon the name 4515 // being in the formal parameter DIE... 4516 if (name == NULL || ::strcmp(name, "this")==0) 4517 { 4518 Type *this_type = ResolveTypeUID (param_type_die_offset); 4519 if (this_type) 4520 { 4521 uint32_t encoding_mask = this_type->GetEncodingMask(); 4522 if (encoding_mask & Type::eEncodingIsPointerUID) 4523 { 4524 is_static = false; 4525 4526 if (encoding_mask & (1u << Type::eEncodingIsConstUID)) 4527 type_quals |= clang::Qualifiers::Const; 4528 if (encoding_mask & (1u << Type::eEncodingIsVolatileUID)) 4529 type_quals |= clang::Qualifiers::Volatile; 4530 } 4531 } 4532 } 4533 } 4534 } 4535 skip = true; 4536 } 4537 else 4538 { 4539 4540 // HACK: Objective C formal parameters "self" and "_cmd" 4541 // are not marked as artificial in the DWARF... 4542 CompileUnit *comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 4543 if (comp_unit) 4544 { 4545 switch (comp_unit->GetLanguage()) 4546 { 4547 case eLanguageTypeObjC: 4548 case eLanguageTypeObjC_plus_plus: 4549 if (name && name[0] && (strcmp (name, "self") == 0 || strcmp (name, "_cmd") == 0)) 4550 skip = true; 4551 break; 4552 default: 4553 break; 4554 } 4555 } 4556 } 4557 } 4558 4559 if (!skip) 4560 { 4561 Type *type = ResolveTypeUID(param_type_die_offset); 4562 if (type) 4563 { 4564 function_param_types.push_back (type->GetClangForwardType()); 4565 4566 clang::ParmVarDecl *param_var_decl = GetClangASTContext().CreateParameterDeclaration (name, 4567 type->GetClangForwardType(), 4568 storage); 4569 assert(param_var_decl); 4570 function_param_decls.push_back(param_var_decl); 4571 4572 GetClangASTContext().SetMetadataAsUserID (param_var_decl, MakeUserID(die->GetOffset())); 4573 } 4574 } 4575 } 4576 arg_idx++; 4577 } 4578 break; 4579 4580 case DW_TAG_unspecified_parameters: 4581 is_variadic = true; 4582 break; 4583 4584 case DW_TAG_template_type_parameter: 4585 case DW_TAG_template_value_parameter: 4586 // The one caller of this was never using the template_param_infos, 4587 // and the local variable was taking up a large amount of stack space 4588 // in SymbolFileDWARF::ParseType() so this was removed. If we ever need 4589 // the template params back, we can add them back. 4590 // ParseTemplateDIE (dwarf_cu, die, template_param_infos); 4591 break; 4592 4593 default: 4594 break; 4595 } 4596 } 4597 return arg_idx; 4598 } 4599 4600 size_t 4601 SymbolFileDWARF::ParseChildEnumerators 4602 ( 4603 const SymbolContext& sc, 4604 lldb_private::ClangASTType &clang_type, 4605 bool is_signed, 4606 uint32_t enumerator_byte_size, 4607 DWARFCompileUnit* dwarf_cu, 4608 const DWARFDebugInfoEntry *parent_die 4609 ) 4610 { 4611 if (parent_die == NULL) 4612 return 0; 4613 4614 size_t enumerators_added = 0; 4615 const DWARFDebugInfoEntry *die; 4616 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64()); 4617 4618 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 4619 { 4620 const dw_tag_t tag = die->Tag(); 4621 if (tag == DW_TAG_enumerator) 4622 { 4623 DWARFDebugInfoEntry::Attributes attributes; 4624 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); 4625 if (num_child_attributes > 0) 4626 { 4627 const char *name = NULL; 4628 bool got_value = false; 4629 int64_t enum_value = 0; 4630 Declaration decl; 4631 4632 uint32_t i; 4633 for (i=0; i<num_child_attributes; ++i) 4634 { 4635 const dw_attr_t attr = attributes.AttributeAtIndex(i); 4636 DWARFFormValue form_value; 4637 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 4638 { 4639 switch (attr) 4640 { 4641 case DW_AT_const_value: 4642 got_value = true; 4643 if (is_signed) 4644 enum_value = form_value.Signed(); 4645 else 4646 enum_value = form_value.Unsigned(); 4647 break; 4648 4649 case DW_AT_name: 4650 name = form_value.AsCString(&get_debug_str_data()); 4651 break; 4652 4653 case DW_AT_description: 4654 default: 4655 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 4656 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 4657 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 4658 case DW_AT_sibling: 4659 break; 4660 } 4661 } 4662 } 4663 4664 if (name && name[0] && got_value) 4665 { 4666 clang_type.AddEnumerationValueToEnumerationType (clang_type.GetEnumerationIntegerType(), 4667 decl, 4668 name, 4669 enum_value, 4670 enumerator_byte_size * 8); 4671 ++enumerators_added; 4672 } 4673 } 4674 } 4675 } 4676 return enumerators_added; 4677 } 4678 4679 void 4680 SymbolFileDWARF::ParseChildArrayInfo 4681 ( 4682 const SymbolContext& sc, 4683 DWARFCompileUnit* dwarf_cu, 4684 const DWARFDebugInfoEntry *parent_die, 4685 int64_t& first_index, 4686 std::vector<uint64_t>& element_orders, 4687 uint32_t& byte_stride, 4688 uint32_t& bit_stride 4689 ) 4690 { 4691 if (parent_die == NULL) 4692 return; 4693 4694 const DWARFDebugInfoEntry *die; 4695 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64()); 4696 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 4697 { 4698 const dw_tag_t tag = die->Tag(); 4699 switch (tag) 4700 { 4701 case DW_TAG_subrange_type: 4702 { 4703 DWARFDebugInfoEntry::Attributes attributes; 4704 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); 4705 if (num_child_attributes > 0) 4706 { 4707 uint64_t num_elements = 0; 4708 uint64_t lower_bound = 0; 4709 uint64_t upper_bound = 0; 4710 bool upper_bound_valid = false; 4711 uint32_t i; 4712 for (i=0; i<num_child_attributes; ++i) 4713 { 4714 const dw_attr_t attr = attributes.AttributeAtIndex(i); 4715 DWARFFormValue form_value; 4716 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 4717 { 4718 switch (attr) 4719 { 4720 case DW_AT_name: 4721 break; 4722 4723 case DW_AT_count: 4724 num_elements = form_value.Unsigned(); 4725 break; 4726 4727 case DW_AT_bit_stride: 4728 bit_stride = form_value.Unsigned(); 4729 break; 4730 4731 case DW_AT_byte_stride: 4732 byte_stride = form_value.Unsigned(); 4733 break; 4734 4735 case DW_AT_lower_bound: 4736 lower_bound = form_value.Unsigned(); 4737 break; 4738 4739 case DW_AT_upper_bound: 4740 upper_bound_valid = true; 4741 upper_bound = form_value.Unsigned(); 4742 break; 4743 4744 default: 4745 case DW_AT_abstract_origin: 4746 case DW_AT_accessibility: 4747 case DW_AT_allocated: 4748 case DW_AT_associated: 4749 case DW_AT_data_location: 4750 case DW_AT_declaration: 4751 case DW_AT_description: 4752 case DW_AT_sibling: 4753 case DW_AT_threads_scaled: 4754 case DW_AT_type: 4755 case DW_AT_visibility: 4756 break; 4757 } 4758 } 4759 } 4760 4761 if (num_elements == 0) 4762 { 4763 if (upper_bound_valid && upper_bound >= lower_bound) 4764 num_elements = upper_bound - lower_bound + 1; 4765 } 4766 4767 element_orders.push_back (num_elements); 4768 } 4769 } 4770 break; 4771 } 4772 } 4773 } 4774 4775 TypeSP 4776 SymbolFileDWARF::GetTypeForDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry* die) 4777 { 4778 TypeSP type_sp; 4779 if (die != NULL) 4780 { 4781 assert(dwarf_cu != NULL); 4782 Type *type_ptr = m_die_to_type.lookup (die); 4783 if (type_ptr == NULL) 4784 { 4785 CompileUnit* lldb_cu = GetCompUnitForDWARFCompUnit(dwarf_cu); 4786 assert (lldb_cu); 4787 SymbolContext sc(lldb_cu); 4788 type_sp = ParseType(sc, dwarf_cu, die, NULL); 4789 } 4790 else if (type_ptr != DIE_IS_BEING_PARSED) 4791 { 4792 // Grab the existing type from the master types lists 4793 type_sp = type_ptr->shared_from_this(); 4794 } 4795 4796 } 4797 return type_sp; 4798 } 4799 4800 clang::DeclContext * 4801 SymbolFileDWARF::GetClangDeclContextContainingDIEOffset (dw_offset_t die_offset) 4802 { 4803 if (die_offset != DW_INVALID_OFFSET) 4804 { 4805 DWARFCompileUnitSP cu_sp; 4806 const DWARFDebugInfoEntry* die = DebugInfo()->GetDIEPtr(die_offset, &cu_sp); 4807 return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL); 4808 } 4809 return NULL; 4810 } 4811 4812 clang::DeclContext * 4813 SymbolFileDWARF::GetClangDeclContextForDIEOffset (const SymbolContext &sc, dw_offset_t die_offset) 4814 { 4815 if (die_offset != DW_INVALID_OFFSET) 4816 { 4817 DWARFDebugInfo* debug_info = DebugInfo(); 4818 if (debug_info) 4819 { 4820 DWARFCompileUnitSP cu_sp; 4821 const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(die_offset, &cu_sp); 4822 if (die) 4823 return GetClangDeclContextForDIE (sc, cu_sp.get(), die); 4824 } 4825 } 4826 return NULL; 4827 } 4828 4829 clang::NamespaceDecl * 4830 SymbolFileDWARF::ResolveNamespaceDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry *die) 4831 { 4832 if (die && die->Tag() == DW_TAG_namespace) 4833 { 4834 // See if we already parsed this namespace DIE and associated it with a 4835 // uniqued namespace declaration 4836 clang::NamespaceDecl *namespace_decl = static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die]); 4837 if (namespace_decl) 4838 return namespace_decl; 4839 else 4840 { 4841 const char *namespace_name = die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL); 4842 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, NULL); 4843 namespace_decl = GetClangASTContext().GetUniqueNamespaceDeclaration (namespace_name, containing_decl_ctx); 4844 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 4845 if (log) 4846 { 4847 if (namespace_name) 4848 { 4849 GetObjectFile()->GetModule()->LogMessage (log, 4850 "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace with DW_AT_name(\"%s\") => clang::NamespaceDecl *%p (original = %p)", 4851 static_cast<void*>(GetClangASTContext().getASTContext()), 4852 MakeUserID(die->GetOffset()), 4853 namespace_name, 4854 static_cast<void*>(namespace_decl), 4855 static_cast<void*>(namespace_decl->getOriginalNamespace())); 4856 } 4857 else 4858 { 4859 GetObjectFile()->GetModule()->LogMessage (log, 4860 "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p (original = %p)", 4861 static_cast<void*>(GetClangASTContext().getASTContext()), 4862 MakeUserID(die->GetOffset()), 4863 static_cast<void*>(namespace_decl), 4864 static_cast<void*>(namespace_decl->getOriginalNamespace())); 4865 } 4866 } 4867 4868 if (namespace_decl) 4869 LinkDeclContextToDIE((clang::DeclContext*)namespace_decl, die); 4870 return namespace_decl; 4871 } 4872 } 4873 return NULL; 4874 } 4875 4876 clang::DeclContext * 4877 SymbolFileDWARF::GetClangDeclContextForDIE (const SymbolContext &sc, DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) 4878 { 4879 clang::DeclContext *clang_decl_ctx = GetCachedClangDeclContextForDIE (die); 4880 if (clang_decl_ctx) 4881 return clang_decl_ctx; 4882 // If this DIE has a specification, or an abstract origin, then trace to those. 4883 4884 dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET); 4885 if (die_offset != DW_INVALID_OFFSET) 4886 return GetClangDeclContextForDIEOffset (sc, die_offset); 4887 4888 die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET); 4889 if (die_offset != DW_INVALID_OFFSET) 4890 return GetClangDeclContextForDIEOffset (sc, die_offset); 4891 4892 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 4893 if (log) 4894 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)); 4895 // This is the DIE we want. Parse it, then query our map. 4896 bool assert_not_being_parsed = true; 4897 ResolveTypeUID (cu, die, assert_not_being_parsed); 4898 4899 clang_decl_ctx = GetCachedClangDeclContextForDIE (die); 4900 4901 return clang_decl_ctx; 4902 } 4903 4904 clang::DeclContext * 4905 SymbolFileDWARF::GetClangDeclContextContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die, const DWARFDebugInfoEntry **decl_ctx_die_copy) 4906 { 4907 if (m_clang_tu_decl == NULL) 4908 m_clang_tu_decl = GetClangASTContext().getASTContext()->getTranslationUnitDecl(); 4909 4910 const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die); 4911 4912 if (decl_ctx_die_copy) 4913 *decl_ctx_die_copy = decl_ctx_die; 4914 4915 if (decl_ctx_die) 4916 { 4917 4918 DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find (decl_ctx_die); 4919 if (pos != m_die_to_decl_ctx.end()) 4920 return pos->second; 4921 4922 switch (decl_ctx_die->Tag()) 4923 { 4924 case DW_TAG_compile_unit: 4925 return m_clang_tu_decl; 4926 4927 case DW_TAG_namespace: 4928 return ResolveNamespaceDIE (cu, decl_ctx_die); 4929 break; 4930 4931 case DW_TAG_structure_type: 4932 case DW_TAG_union_type: 4933 case DW_TAG_class_type: 4934 { 4935 Type* type = ResolveType (cu, decl_ctx_die); 4936 if (type) 4937 { 4938 clang::DeclContext *decl_ctx = type->GetClangForwardType().GetDeclContextForType (); 4939 if (decl_ctx) 4940 { 4941 LinkDeclContextToDIE (decl_ctx, decl_ctx_die); 4942 if (decl_ctx) 4943 return decl_ctx; 4944 } 4945 } 4946 } 4947 break; 4948 4949 default: 4950 break; 4951 } 4952 } 4953 return m_clang_tu_decl; 4954 } 4955 4956 4957 const DWARFDebugInfoEntry * 4958 SymbolFileDWARF::GetDeclContextDIEContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) 4959 { 4960 if (cu && die) 4961 { 4962 const DWARFDebugInfoEntry * const decl_die = die; 4963 4964 while (die != NULL) 4965 { 4966 // If this is the original DIE that we are searching for a declaration 4967 // for, then don't look in the cache as we don't want our own decl 4968 // context to be our decl context... 4969 if (decl_die != die) 4970 { 4971 switch (die->Tag()) 4972 { 4973 case DW_TAG_compile_unit: 4974 case DW_TAG_namespace: 4975 case DW_TAG_structure_type: 4976 case DW_TAG_union_type: 4977 case DW_TAG_class_type: 4978 return die; 4979 4980 default: 4981 break; 4982 } 4983 } 4984 4985 dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET); 4986 if (die_offset != DW_INVALID_OFFSET) 4987 { 4988 DWARFCompileUnit *spec_cu = cu; 4989 const DWARFDebugInfoEntry *spec_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &spec_cu); 4990 const DWARFDebugInfoEntry *spec_die_decl_ctx_die = GetDeclContextDIEContainingDIE (spec_cu, spec_die); 4991 if (spec_die_decl_ctx_die) 4992 return spec_die_decl_ctx_die; 4993 } 4994 4995 die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET); 4996 if (die_offset != DW_INVALID_OFFSET) 4997 { 4998 DWARFCompileUnit *abs_cu = cu; 4999 const DWARFDebugInfoEntry *abs_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &abs_cu); 5000 const DWARFDebugInfoEntry *abs_die_decl_ctx_die = GetDeclContextDIEContainingDIE (abs_cu, abs_die); 5001 if (abs_die_decl_ctx_die) 5002 return abs_die_decl_ctx_die; 5003 } 5004 5005 die = die->GetParent(); 5006 } 5007 } 5008 return NULL; 5009 } 5010 5011 5012 Symbol * 5013 SymbolFileDWARF::GetObjCClassSymbol (const ConstString &objc_class_name) 5014 { 5015 Symbol *objc_class_symbol = NULL; 5016 if (m_obj_file) 5017 { 5018 Symtab *symtab = m_obj_file->GetSymtab (); 5019 if (symtab) 5020 { 5021 objc_class_symbol = symtab->FindFirstSymbolWithNameAndType (objc_class_name, 5022 eSymbolTypeObjCClass, 5023 Symtab::eDebugNo, 5024 Symtab::eVisibilityAny); 5025 } 5026 } 5027 return objc_class_symbol; 5028 } 5029 5030 // Some compilers don't emit the DW_AT_APPLE_objc_complete_type attribute. If they don't 5031 // then we can end up looking through all class types for a complete type and never find 5032 // the full definition. We need to know if this attribute is supported, so we determine 5033 // this here and cache th result. We also need to worry about the debug map DWARF file 5034 // if we are doing darwin DWARF in .o file debugging. 5035 bool 5036 SymbolFileDWARF::Supports_DW_AT_APPLE_objc_complete_type (DWARFCompileUnit *cu) 5037 { 5038 if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate) 5039 { 5040 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo; 5041 if (cu && cu->Supports_DW_AT_APPLE_objc_complete_type()) 5042 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; 5043 else 5044 { 5045 DWARFDebugInfo* debug_info = DebugInfo(); 5046 const uint32_t num_compile_units = GetNumCompileUnits(); 5047 for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) 5048 { 5049 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx); 5050 if (dwarf_cu != cu && dwarf_cu->Supports_DW_AT_APPLE_objc_complete_type()) 5051 { 5052 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; 5053 break; 5054 } 5055 } 5056 } 5057 if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolNo && GetDebugMapSymfile ()) 5058 return m_debug_map_symfile->Supports_DW_AT_APPLE_objc_complete_type (this); 5059 } 5060 return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes; 5061 } 5062 5063 // This function can be used when a DIE is found that is a forward declaration 5064 // DIE and we want to try and find a type that has the complete definition. 5065 TypeSP 5066 SymbolFileDWARF::FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die, 5067 const ConstString &type_name, 5068 bool must_be_implementation) 5069 { 5070 5071 TypeSP type_sp; 5072 5073 if (!type_name || (must_be_implementation && !GetObjCClassSymbol (type_name))) 5074 return type_sp; 5075 5076 DIEArray die_offsets; 5077 5078 if (m_using_apple_tables) 5079 { 5080 if (m_apple_types_ap.get()) 5081 { 5082 const char *name_cstr = type_name.GetCString(); 5083 m_apple_types_ap->FindCompleteObjCClassByName (name_cstr, die_offsets, must_be_implementation); 5084 } 5085 } 5086 else 5087 { 5088 if (!m_indexed) 5089 Index (); 5090 5091 m_type_index.Find (type_name, die_offsets); 5092 } 5093 5094 const size_t num_matches = die_offsets.size(); 5095 5096 DWARFCompileUnit* type_cu = NULL; 5097 const DWARFDebugInfoEntry* type_die = NULL; 5098 if (num_matches) 5099 { 5100 DWARFDebugInfo* debug_info = DebugInfo(); 5101 for (size_t i=0; i<num_matches; ++i) 5102 { 5103 const dw_offset_t die_offset = die_offsets[i]; 5104 type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu); 5105 5106 if (type_die) 5107 { 5108 bool try_resolving_type = false; 5109 5110 // Don't try and resolve the DIE we are looking for with the DIE itself! 5111 if (type_die != die) 5112 { 5113 switch (type_die->Tag()) 5114 { 5115 case DW_TAG_class_type: 5116 case DW_TAG_structure_type: 5117 try_resolving_type = true; 5118 break; 5119 default: 5120 break; 5121 } 5122 } 5123 5124 if (try_resolving_type) 5125 { 5126 if (must_be_implementation && type_cu->Supports_DW_AT_APPLE_objc_complete_type()) 5127 try_resolving_type = type_die->GetAttributeValueAsUnsigned (this, type_cu, DW_AT_APPLE_objc_complete_type, 0); 5128 5129 if (try_resolving_type) 5130 { 5131 Type *resolved_type = ResolveType (type_cu, type_die, false); 5132 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) 5133 { 5134 DEBUG_PRINTF ("resolved 0x%8.8" PRIx64 " from %s to 0x%8.8" PRIx64 " (cu 0x%8.8" PRIx64 ")\n", 5135 MakeUserID(die->GetOffset()), 5136 m_obj_file->GetFileSpec().GetFilename().AsCString("<Unknown>"), 5137 MakeUserID(type_die->GetOffset()), 5138 MakeUserID(type_cu->GetOffset())); 5139 5140 if (die) 5141 m_die_to_type[die] = resolved_type; 5142 type_sp = resolved_type->shared_from_this(); 5143 break; 5144 } 5145 } 5146 } 5147 } 5148 else 5149 { 5150 if (m_using_apple_tables) 5151 { 5152 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n", 5153 die_offset, type_name.GetCString()); 5154 } 5155 } 5156 5157 } 5158 } 5159 return type_sp; 5160 } 5161 5162 5163 //---------------------------------------------------------------------- 5164 // This function helps to ensure that the declaration contexts match for 5165 // two different DIEs. Often times debug information will refer to a 5166 // forward declaration of a type (the equivalent of "struct my_struct;". 5167 // There will often be a declaration of that type elsewhere that has the 5168 // full definition. When we go looking for the full type "my_struct", we 5169 // will find one or more matches in the accelerator tables and we will 5170 // then need to make sure the type was in the same declaration context 5171 // as the original DIE. This function can efficiently compare two DIEs 5172 // and will return true when the declaration context matches, and false 5173 // when they don't. 5174 //---------------------------------------------------------------------- 5175 bool 5176 SymbolFileDWARF::DIEDeclContextsMatch (DWARFCompileUnit* cu1, const DWARFDebugInfoEntry *die1, 5177 DWARFCompileUnit* cu2, const DWARFDebugInfoEntry *die2) 5178 { 5179 if (die1 == die2) 5180 return true; 5181 5182 #if defined (LLDB_CONFIGURATION_DEBUG) 5183 // You can't and shouldn't call this function with a compile unit from 5184 // two different SymbolFileDWARF instances. 5185 assert (DebugInfo()->ContainsCompileUnit (cu1)); 5186 assert (DebugInfo()->ContainsCompileUnit (cu2)); 5187 #endif 5188 5189 DWARFDIECollection decl_ctx_1; 5190 DWARFDIECollection decl_ctx_2; 5191 //The declaration DIE stack is a stack of the declaration context 5192 // DIEs all the way back to the compile unit. If a type "T" is 5193 // declared inside a class "B", and class "B" is declared inside 5194 // a class "A" and class "A" is in a namespace "lldb", and the 5195 // namespace is in a compile unit, there will be a stack of DIEs: 5196 // 5197 // [0] DW_TAG_class_type for "B" 5198 // [1] DW_TAG_class_type for "A" 5199 // [2] DW_TAG_namespace for "lldb" 5200 // [3] DW_TAG_compile_unit for the source file. 5201 // 5202 // We grab both contexts and make sure that everything matches 5203 // all the way back to the compiler unit. 5204 5205 // First lets grab the decl contexts for both DIEs 5206 die1->GetDeclContextDIEs (this, cu1, decl_ctx_1); 5207 die2->GetDeclContextDIEs (this, cu2, decl_ctx_2); 5208 // Make sure the context arrays have the same size, otherwise 5209 // we are done 5210 const size_t count1 = decl_ctx_1.Size(); 5211 const size_t count2 = decl_ctx_2.Size(); 5212 if (count1 != count2) 5213 return false; 5214 5215 // Make sure the DW_TAG values match all the way back up the 5216 // compile unit. If they don't, then we are done. 5217 const DWARFDebugInfoEntry *decl_ctx_die1; 5218 const DWARFDebugInfoEntry *decl_ctx_die2; 5219 size_t i; 5220 for (i=0; i<count1; i++) 5221 { 5222 decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i); 5223 decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i); 5224 if (decl_ctx_die1->Tag() != decl_ctx_die2->Tag()) 5225 return false; 5226 } 5227 #if defined LLDB_CONFIGURATION_DEBUG 5228 5229 // Make sure the top item in the decl context die array is always 5230 // DW_TAG_compile_unit. If it isn't then something went wrong in 5231 // the DWARFDebugInfoEntry::GetDeclContextDIEs() function... 5232 assert (decl_ctx_1.GetDIEPtrAtIndex (count1 - 1)->Tag() == DW_TAG_compile_unit); 5233 5234 #endif 5235 // Always skip the compile unit when comparing by only iterating up to 5236 // "count - 1". Here we compare the names as we go. 5237 for (i=0; i<count1 - 1; i++) 5238 { 5239 decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i); 5240 decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i); 5241 const char *name1 = decl_ctx_die1->GetName(this, cu1); 5242 const char *name2 = decl_ctx_die2->GetName(this, cu2); 5243 // If the string was from a DW_FORM_strp, then the pointer will often 5244 // be the same! 5245 if (name1 == name2) 5246 continue; 5247 5248 // Name pointers are not equal, so only compare the strings 5249 // if both are not NULL. 5250 if (name1 && name2) 5251 { 5252 // If the strings don't compare, we are done... 5253 if (strcmp(name1, name2) != 0) 5254 return false; 5255 } 5256 else 5257 { 5258 // One name was NULL while the other wasn't 5259 return false; 5260 } 5261 } 5262 // We made it through all of the checks and the declaration contexts 5263 // are equal. 5264 return true; 5265 } 5266 5267 5268 TypeSP 5269 SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &dwarf_decl_ctx) 5270 { 5271 TypeSP type_sp; 5272 5273 const uint32_t dwarf_decl_ctx_count = dwarf_decl_ctx.GetSize(); 5274 if (dwarf_decl_ctx_count > 0) 5275 { 5276 const ConstString type_name(dwarf_decl_ctx[0].name); 5277 const dw_tag_t tag = dwarf_decl_ctx[0].tag; 5278 5279 if (type_name) 5280 { 5281 Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION|DWARF_LOG_LOOKUPS)); 5282 if (log) 5283 { 5284 GetObjectFile()->GetModule()->LogMessage (log, 5285 "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s')", 5286 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag), 5287 dwarf_decl_ctx.GetQualifiedName()); 5288 } 5289 5290 DIEArray die_offsets; 5291 5292 if (m_using_apple_tables) 5293 { 5294 if (m_apple_types_ap.get()) 5295 { 5296 const bool has_tag = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeTag); 5297 const bool has_qualified_name_hash = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeQualNameHash); 5298 if (has_tag && has_qualified_name_hash) 5299 { 5300 const char *qualified_name = dwarf_decl_ctx.GetQualifiedName(); 5301 const uint32_t qualified_name_hash = MappedHash::HashStringUsingDJB (qualified_name); 5302 if (log) 5303 GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTagAndQualifiedNameHash()"); 5304 m_apple_types_ap->FindByNameAndTagAndQualifiedNameHash (type_name.GetCString(), tag, qualified_name_hash, die_offsets); 5305 } 5306 else if (has_tag) 5307 { 5308 if (log) 5309 GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTag()"); 5310 m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), tag, die_offsets); 5311 } 5312 else 5313 { 5314 m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets); 5315 } 5316 } 5317 } 5318 else 5319 { 5320 if (!m_indexed) 5321 Index (); 5322 5323 m_type_index.Find (type_name, die_offsets); 5324 } 5325 5326 const size_t num_matches = die_offsets.size(); 5327 5328 5329 DWARFCompileUnit* type_cu = NULL; 5330 const DWARFDebugInfoEntry* type_die = NULL; 5331 if (num_matches) 5332 { 5333 DWARFDebugInfo* debug_info = DebugInfo(); 5334 for (size_t i=0; i<num_matches; ++i) 5335 { 5336 const dw_offset_t die_offset = die_offsets[i]; 5337 type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu); 5338 5339 if (type_die) 5340 { 5341 bool try_resolving_type = false; 5342 5343 // Don't try and resolve the DIE we are looking for with the DIE itself! 5344 const dw_tag_t type_tag = type_die->Tag(); 5345 // Make sure the tags match 5346 if (type_tag == tag) 5347 { 5348 // The tags match, lets try resolving this type 5349 try_resolving_type = true; 5350 } 5351 else 5352 { 5353 // The tags don't match, but we need to watch our for a 5354 // forward declaration for a struct and ("struct foo") 5355 // ends up being a class ("class foo { ... };") or 5356 // vice versa. 5357 switch (type_tag) 5358 { 5359 case DW_TAG_class_type: 5360 // We had a "class foo", see if we ended up with a "struct foo { ... };" 5361 try_resolving_type = (tag == DW_TAG_structure_type); 5362 break; 5363 case DW_TAG_structure_type: 5364 // We had a "struct foo", see if we ended up with a "class foo { ... };" 5365 try_resolving_type = (tag == DW_TAG_class_type); 5366 break; 5367 default: 5368 // Tags don't match, don't event try to resolve 5369 // using this type whose name matches.... 5370 break; 5371 } 5372 } 5373 5374 if (try_resolving_type) 5375 { 5376 DWARFDeclContext type_dwarf_decl_ctx; 5377 type_die->GetDWARFDeclContext (this, type_cu, type_dwarf_decl_ctx); 5378 5379 if (log) 5380 { 5381 GetObjectFile()->GetModule()->LogMessage (log, 5382 "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') trying die=0x%8.8x (%s)", 5383 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag), 5384 dwarf_decl_ctx.GetQualifiedName(), 5385 type_die->GetOffset(), 5386 type_dwarf_decl_ctx.GetQualifiedName()); 5387 } 5388 5389 // Make sure the decl contexts match all the way up 5390 if (dwarf_decl_ctx == type_dwarf_decl_ctx) 5391 { 5392 Type *resolved_type = ResolveType (type_cu, type_die, false); 5393 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) 5394 { 5395 type_sp = resolved_type->shared_from_this(); 5396 break; 5397 } 5398 } 5399 } 5400 else 5401 { 5402 if (log) 5403 { 5404 std::string qualified_name; 5405 type_die->GetQualifiedName(this, type_cu, qualified_name); 5406 GetObjectFile()->GetModule()->LogMessage (log, 5407 "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') ignoring die=0x%8.8x (%s)", 5408 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag), 5409 dwarf_decl_ctx.GetQualifiedName(), 5410 type_die->GetOffset(), 5411 qualified_name.c_str()); 5412 } 5413 } 5414 } 5415 else 5416 { 5417 if (m_using_apple_tables) 5418 { 5419 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n", 5420 die_offset, type_name.GetCString()); 5421 } 5422 } 5423 5424 } 5425 } 5426 } 5427 } 5428 return type_sp; 5429 } 5430 5431 bool 5432 SymbolFileDWARF::CopyUniqueClassMethodTypes (SymbolFileDWARF *src_symfile, 5433 Type *class_type, 5434 DWARFCompileUnit* src_cu, 5435 const DWARFDebugInfoEntry *src_class_die, 5436 DWARFCompileUnit* dst_cu, 5437 const DWARFDebugInfoEntry *dst_class_die, 5438 DWARFDIECollection &failures) 5439 { 5440 if (!class_type || !src_cu || !src_class_die || !dst_cu || !dst_class_die) 5441 return false; 5442 if (src_class_die->Tag() != dst_class_die->Tag()) 5443 return false; 5444 5445 // We need to complete the class type so we can get all of the method types 5446 // parsed so we can then unique those types to their equivalent counterparts 5447 // in "dst_cu" and "dst_class_die" 5448 class_type->GetClangFullType(); 5449 5450 const DWARFDebugInfoEntry *src_die; 5451 const DWARFDebugInfoEntry *dst_die; 5452 UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die; 5453 UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die; 5454 UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die_artificial; 5455 UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die_artificial; 5456 for (src_die = src_class_die->GetFirstChild(); src_die != NULL; src_die = src_die->GetSibling()) 5457 { 5458 if (src_die->Tag() == DW_TAG_subprogram) 5459 { 5460 // Make sure this is a declaration and not a concrete instance by looking 5461 // for DW_AT_declaration set to 1. Sometimes concrete function instances 5462 // are placed inside the class definitions and shouldn't be included in 5463 // the list of things are are tracking here. 5464 if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_declaration, 0) == 1) 5465 { 5466 const char *src_name = src_die->GetMangledName (src_symfile, src_cu); 5467 if (src_name) 5468 { 5469 ConstString src_const_name(src_name); 5470 if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_artificial, 0)) 5471 src_name_to_die_artificial.Append(src_const_name.GetCString(), src_die); 5472 else 5473 src_name_to_die.Append(src_const_name.GetCString(), src_die); 5474 } 5475 } 5476 } 5477 } 5478 for (dst_die = dst_class_die->GetFirstChild(); dst_die != NULL; dst_die = dst_die->GetSibling()) 5479 { 5480 if (dst_die->Tag() == DW_TAG_subprogram) 5481 { 5482 // Make sure this is a declaration and not a concrete instance by looking 5483 // for DW_AT_declaration set to 1. Sometimes concrete function instances 5484 // are placed inside the class definitions and shouldn't be included in 5485 // the list of things are are tracking here. 5486 if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_declaration, 0) == 1) 5487 { 5488 const char *dst_name = dst_die->GetMangledName (this, dst_cu); 5489 if (dst_name) 5490 { 5491 ConstString dst_const_name(dst_name); 5492 if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_artificial, 0)) 5493 dst_name_to_die_artificial.Append(dst_const_name.GetCString(), dst_die); 5494 else 5495 dst_name_to_die.Append(dst_const_name.GetCString(), dst_die); 5496 } 5497 } 5498 } 5499 } 5500 const uint32_t src_size = src_name_to_die.GetSize (); 5501 const uint32_t dst_size = dst_name_to_die.GetSize (); 5502 Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | DWARF_LOG_TYPE_COMPLETION)); 5503 5504 // Is everything kosher so we can go through the members at top speed? 5505 bool fast_path = true; 5506 5507 if (src_size != dst_size) 5508 { 5509 if (src_size != 0 && dst_size != 0) 5510 { 5511 if (log) 5512 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)", 5513 src_class_die->GetOffset(), 5514 dst_class_die->GetOffset(), 5515 src_size, 5516 dst_size); 5517 } 5518 5519 fast_path = false; 5520 } 5521 5522 uint32_t idx; 5523 5524 if (fast_path) 5525 { 5526 for (idx = 0; idx < src_size; ++idx) 5527 { 5528 src_die = src_name_to_die.GetValueAtIndexUnchecked (idx); 5529 dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx); 5530 5531 if (src_die->Tag() != dst_die->Tag()) 5532 { 5533 if (log) 5534 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)", 5535 src_class_die->GetOffset(), 5536 dst_class_die->GetOffset(), 5537 src_die->GetOffset(), 5538 DW_TAG_value_to_name(src_die->Tag()), 5539 dst_die->GetOffset(), 5540 DW_TAG_value_to_name(src_die->Tag())); 5541 fast_path = false; 5542 } 5543 5544 const char *src_name = src_die->GetMangledName (src_symfile, src_cu); 5545 const char *dst_name = dst_die->GetMangledName (this, dst_cu); 5546 5547 // Make sure the names match 5548 if (src_name == dst_name || (strcmp (src_name, dst_name) == 0)) 5549 continue; 5550 5551 if (log) 5552 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)", 5553 src_class_die->GetOffset(), 5554 dst_class_die->GetOffset(), 5555 src_die->GetOffset(), 5556 src_name, 5557 dst_die->GetOffset(), 5558 dst_name); 5559 5560 fast_path = false; 5561 } 5562 } 5563 5564 // Now do the work of linking the DeclContexts and Types. 5565 if (fast_path) 5566 { 5567 // We can do this quickly. Just run across the tables index-for-index since 5568 // we know each node has matching names and tags. 5569 for (idx = 0; idx < src_size; ++idx) 5570 { 5571 src_die = src_name_to_die.GetValueAtIndexUnchecked (idx); 5572 dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx); 5573 5574 clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die]; 5575 if (src_decl_ctx) 5576 { 5577 if (log) 5578 log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", 5579 static_cast<void*>(src_decl_ctx), 5580 src_die->GetOffset(), dst_die->GetOffset()); 5581 LinkDeclContextToDIE (src_decl_ctx, dst_die); 5582 } 5583 else 5584 { 5585 if (log) 5586 log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", 5587 src_die->GetOffset(), dst_die->GetOffset()); 5588 } 5589 5590 Type *src_child_type = m_die_to_type[src_die]; 5591 if (src_child_type) 5592 { 5593 if (log) 5594 log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", 5595 static_cast<void*>(src_child_type), 5596 src_child_type->GetID(), 5597 src_die->GetOffset(), dst_die->GetOffset()); 5598 m_die_to_type[dst_die] = src_child_type; 5599 } 5600 else 5601 { 5602 if (log) 5603 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()); 5604 } 5605 } 5606 } 5607 else 5608 { 5609 // We must do this slowly. For each member of the destination, look 5610 // up a member in the source with the same name, check its tag, and 5611 // unique them if everything matches up. Report failures. 5612 5613 if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) 5614 { 5615 src_name_to_die.Sort(); 5616 5617 for (idx = 0; idx < dst_size; ++idx) 5618 { 5619 const char *dst_name = dst_name_to_die.GetCStringAtIndex(idx); 5620 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); 5621 src_die = src_name_to_die.Find(dst_name, NULL); 5622 5623 if (src_die && (src_die->Tag() == dst_die->Tag())) 5624 { 5625 clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die]; 5626 if (src_decl_ctx) 5627 { 5628 if (log) 5629 log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", 5630 static_cast<void*>(src_decl_ctx), 5631 src_die->GetOffset(), 5632 dst_die->GetOffset()); 5633 LinkDeclContextToDIE (src_decl_ctx, dst_die); 5634 } 5635 else 5636 { 5637 if (log) 5638 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()); 5639 } 5640 5641 Type *src_child_type = m_die_to_type[src_die]; 5642 if (src_child_type) 5643 { 5644 if (log) 5645 log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", 5646 static_cast<void*>(src_child_type), 5647 src_child_type->GetID(), 5648 src_die->GetOffset(), 5649 dst_die->GetOffset()); 5650 m_die_to_type[dst_die] = src_child_type; 5651 } 5652 else 5653 { 5654 if (log) 5655 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()); 5656 } 5657 } 5658 else 5659 { 5660 if (log) 5661 log->Printf ("warning: couldn't find a match for 0x%8.8x", dst_die->GetOffset()); 5662 5663 failures.Append(dst_die); 5664 } 5665 } 5666 } 5667 } 5668 5669 const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize (); 5670 const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize (); 5671 5672 UniqueCStringMap<const DWARFDebugInfoEntry *> name_to_die_artificial_not_in_src; 5673 5674 if (src_size_artificial && dst_size_artificial) 5675 { 5676 dst_name_to_die_artificial.Sort(); 5677 5678 for (idx = 0; idx < src_size_artificial; ++idx) 5679 { 5680 const char *src_name_artificial = src_name_to_die_artificial.GetCStringAtIndex(idx); 5681 src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked (idx); 5682 dst_die = dst_name_to_die_artificial.Find(src_name_artificial, NULL); 5683 5684 if (dst_die) 5685 { 5686 // Both classes have the artificial types, link them 5687 clang::DeclContext *src_decl_ctx = m_die_to_decl_ctx[src_die]; 5688 if (src_decl_ctx) 5689 { 5690 if (log) 5691 log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", 5692 static_cast<void*>(src_decl_ctx), 5693 src_die->GetOffset(), dst_die->GetOffset()); 5694 LinkDeclContextToDIE (src_decl_ctx, dst_die); 5695 } 5696 else 5697 { 5698 if (log) 5699 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()); 5700 } 5701 5702 Type *src_child_type = m_die_to_type[src_die]; 5703 if (src_child_type) 5704 { 5705 if (log) 5706 log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", 5707 static_cast<void*>(src_child_type), 5708 src_child_type->GetID(), 5709 src_die->GetOffset(), dst_die->GetOffset()); 5710 m_die_to_type[dst_die] = src_child_type; 5711 } 5712 else 5713 { 5714 if (log) 5715 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()); 5716 } 5717 } 5718 } 5719 } 5720 5721 if (dst_size_artificial) 5722 { 5723 for (idx = 0; idx < dst_size_artificial; ++idx) 5724 { 5725 const char *dst_name_artificial = dst_name_to_die_artificial.GetCStringAtIndex(idx); 5726 dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked (idx); 5727 if (log) 5728 log->Printf ("warning: need to create artificial method for 0x%8.8x for method '%s'", dst_die->GetOffset(), dst_name_artificial); 5729 5730 failures.Append(dst_die); 5731 } 5732 } 5733 5734 return (failures.Size() != 0); 5735 } 5736 5737 TypeSP 5738 SymbolFileDWARF::ParseType (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die, bool *type_is_new_ptr) 5739 { 5740 TypeSP type_sp; 5741 5742 if (type_is_new_ptr) 5743 *type_is_new_ptr = false; 5744 5745 #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE) 5746 static DIEStack g_die_stack; 5747 DIEStack::ScopedPopper scoped_die_logger(g_die_stack); 5748 #endif 5749 5750 AccessType accessibility = eAccessNone; 5751 if (die != NULL) 5752 { 5753 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 5754 if (log) 5755 { 5756 const DWARFDebugInfoEntry *context_die; 5757 clang::DeclContext *context = GetClangDeclContextContainingDIE (dwarf_cu, die, &context_die); 5758 5759 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')", 5760 die->GetOffset(), 5761 static_cast<void*>(context), 5762 context_die->GetOffset(), 5763 DW_TAG_value_to_name(die->Tag()), 5764 die->GetName(this, dwarf_cu)); 5765 5766 #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE) 5767 scoped_die_logger.Push (dwarf_cu, die); 5768 g_die_stack.LogDIEs(log, this); 5769 #endif 5770 } 5771 // 5772 // Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 5773 // if (log && dwarf_cu) 5774 // { 5775 // StreamString s; 5776 // die->DumpLocation (this, dwarf_cu, s); 5777 // GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData()); 5778 // 5779 // } 5780 5781 Type *type_ptr = m_die_to_type.lookup (die); 5782 TypeList* type_list = GetTypeList(); 5783 if (type_ptr == NULL) 5784 { 5785 ClangASTContext &ast = GetClangASTContext(); 5786 if (type_is_new_ptr) 5787 *type_is_new_ptr = true; 5788 5789 const dw_tag_t tag = die->Tag(); 5790 5791 bool is_forward_declaration = false; 5792 DWARFDebugInfoEntry::Attributes attributes; 5793 const char *type_name_cstr = NULL; 5794 ConstString type_name_const_str; 5795 Type::ResolveState resolve_state = Type::eResolveStateUnresolved; 5796 uint64_t byte_size = 0; 5797 Declaration decl; 5798 5799 Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID; 5800 ClangASTType clang_type; 5801 DWARFFormValue form_value; 5802 5803 dw_attr_t attr; 5804 5805 switch (tag) 5806 { 5807 case DW_TAG_base_type: 5808 case DW_TAG_pointer_type: 5809 case DW_TAG_reference_type: 5810 case DW_TAG_rvalue_reference_type: 5811 case DW_TAG_typedef: 5812 case DW_TAG_const_type: 5813 case DW_TAG_restrict_type: 5814 case DW_TAG_volatile_type: 5815 case DW_TAG_unspecified_type: 5816 { 5817 // Set a bit that lets us know that we are currently parsing this 5818 m_die_to_type[die] = DIE_IS_BEING_PARSED; 5819 5820 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 5821 uint32_t encoding = 0; 5822 lldb::user_id_t encoding_uid = LLDB_INVALID_UID; 5823 5824 if (num_attributes > 0) 5825 { 5826 uint32_t i; 5827 for (i=0; i<num_attributes; ++i) 5828 { 5829 attr = attributes.AttributeAtIndex(i); 5830 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 5831 { 5832 switch (attr) 5833 { 5834 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 5835 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 5836 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 5837 case DW_AT_name: 5838 5839 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 5840 // Work around a bug in llvm-gcc where they give a name to a reference type which doesn't 5841 // include the "&"... 5842 if (tag == DW_TAG_reference_type) 5843 { 5844 if (strchr (type_name_cstr, '&') == NULL) 5845 type_name_cstr = NULL; 5846 } 5847 if (type_name_cstr) 5848 type_name_const_str.SetCString(type_name_cstr); 5849 break; 5850 case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; 5851 case DW_AT_encoding: encoding = form_value.Unsigned(); break; 5852 case DW_AT_type: encoding_uid = form_value.Reference(); break; 5853 default: 5854 case DW_AT_sibling: 5855 break; 5856 } 5857 } 5858 } 5859 } 5860 5861 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); 5862 5863 switch (tag) 5864 { 5865 default: 5866 break; 5867 5868 case DW_TAG_unspecified_type: 5869 if (strcmp(type_name_cstr, "nullptr_t") == 0 || 5870 strcmp(type_name_cstr, "decltype(nullptr)") == 0 ) 5871 { 5872 resolve_state = Type::eResolveStateFull; 5873 clang_type = ast.GetBasicType(eBasicTypeNullPtr); 5874 break; 5875 } 5876 // Fall through to base type below in case we can handle the type there... 5877 5878 case DW_TAG_base_type: 5879 resolve_state = Type::eResolveStateFull; 5880 clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr, 5881 encoding, 5882 byte_size * 8); 5883 break; 5884 5885 case DW_TAG_pointer_type: encoding_data_type = Type::eEncodingIsPointerUID; break; 5886 case DW_TAG_reference_type: encoding_data_type = Type::eEncodingIsLValueReferenceUID; break; 5887 case DW_TAG_rvalue_reference_type: encoding_data_type = Type::eEncodingIsRValueReferenceUID; break; 5888 case DW_TAG_typedef: encoding_data_type = Type::eEncodingIsTypedefUID; break; 5889 case DW_TAG_const_type: encoding_data_type = Type::eEncodingIsConstUID; break; 5890 case DW_TAG_restrict_type: encoding_data_type = Type::eEncodingIsRestrictUID; break; 5891 case DW_TAG_volatile_type: encoding_data_type = Type::eEncodingIsVolatileUID; break; 5892 } 5893 5894 if (!clang_type && (encoding_data_type == Type::eEncodingIsPointerUID || encoding_data_type == Type::eEncodingIsTypedefUID) && sc.comp_unit != NULL) 5895 { 5896 bool translation_unit_is_objc = (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus); 5897 5898 if (translation_unit_is_objc) 5899 { 5900 if (type_name_cstr != NULL) 5901 { 5902 static ConstString g_objc_type_name_id("id"); 5903 static ConstString g_objc_type_name_Class("Class"); 5904 static ConstString g_objc_type_name_selector("SEL"); 5905 5906 if (type_name_const_str == g_objc_type_name_id) 5907 { 5908 if (log) 5909 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'id' built-in type.", 5910 die->GetOffset(), 5911 DW_TAG_value_to_name(die->Tag()), 5912 die->GetName(this, dwarf_cu)); 5913 clang_type = ast.GetBasicType(eBasicTypeObjCID); 5914 encoding_data_type = Type::eEncodingIsUID; 5915 encoding_uid = LLDB_INVALID_UID; 5916 resolve_state = Type::eResolveStateFull; 5917 5918 } 5919 else if (type_name_const_str == g_objc_type_name_Class) 5920 { 5921 if (log) 5922 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'Class' built-in type.", 5923 die->GetOffset(), 5924 DW_TAG_value_to_name(die->Tag()), 5925 die->GetName(this, dwarf_cu)); 5926 clang_type = ast.GetBasicType(eBasicTypeObjCClass); 5927 encoding_data_type = Type::eEncodingIsUID; 5928 encoding_uid = LLDB_INVALID_UID; 5929 resolve_state = Type::eResolveStateFull; 5930 } 5931 else if (type_name_const_str == g_objc_type_name_selector) 5932 { 5933 if (log) 5934 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'selector' built-in type.", 5935 die->GetOffset(), 5936 DW_TAG_value_to_name(die->Tag()), 5937 die->GetName(this, dwarf_cu)); 5938 clang_type = ast.GetBasicType(eBasicTypeObjCSel); 5939 encoding_data_type = Type::eEncodingIsUID; 5940 encoding_uid = LLDB_INVALID_UID; 5941 resolve_state = Type::eResolveStateFull; 5942 } 5943 } 5944 else if (encoding_data_type == Type::eEncodingIsPointerUID && encoding_uid != LLDB_INVALID_UID) 5945 { 5946 // Clang sometimes erroneously emits id as objc_object*. In that case we fix up the type to "id". 5947 5948 DWARFDebugInfoEntry* encoding_die = dwarf_cu->GetDIEPtr(encoding_uid); 5949 5950 if (encoding_die && encoding_die->Tag() == DW_TAG_structure_type) 5951 { 5952 if (const char *struct_name = encoding_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL)) 5953 { 5954 if (!strcmp(struct_name, "objc_object")) 5955 { 5956 if (log) 5957 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is 'objc_object*', which we overrode to 'id'.", 5958 die->GetOffset(), 5959 DW_TAG_value_to_name(die->Tag()), 5960 die->GetName(this, dwarf_cu)); 5961 clang_type = ast.GetBasicType(eBasicTypeObjCID); 5962 encoding_data_type = Type::eEncodingIsUID; 5963 encoding_uid = LLDB_INVALID_UID; 5964 resolve_state = Type::eResolveStateFull; 5965 } 5966 } 5967 } 5968 } 5969 } 5970 } 5971 5972 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 5973 this, 5974 type_name_const_str, 5975 byte_size, 5976 NULL, 5977 encoding_uid, 5978 encoding_data_type, 5979 &decl, 5980 clang_type, 5981 resolve_state)); 5982 5983 m_die_to_type[die] = type_sp.get(); 5984 5985 // Type* encoding_type = GetUniquedTypeForDIEOffset(encoding_uid, type_sp, NULL, 0, 0, false); 5986 // if (encoding_type != NULL) 5987 // { 5988 // if (encoding_type != DIE_IS_BEING_PARSED) 5989 // type_sp->SetEncodingType(encoding_type); 5990 // else 5991 // m_indirect_fixups.push_back(type_sp.get()); 5992 // } 5993 } 5994 break; 5995 5996 case DW_TAG_structure_type: 5997 case DW_TAG_union_type: 5998 case DW_TAG_class_type: 5999 { 6000 // Set a bit that lets us know that we are currently parsing this 6001 m_die_to_type[die] = DIE_IS_BEING_PARSED; 6002 bool byte_size_valid = false; 6003 6004 LanguageType class_language = eLanguageTypeUnknown; 6005 bool is_complete_objc_class = false; 6006 //bool struct_is_class = false; 6007 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 6008 if (num_attributes > 0) 6009 { 6010 uint32_t i; 6011 for (i=0; i<num_attributes; ++i) 6012 { 6013 attr = attributes.AttributeAtIndex(i); 6014 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 6015 { 6016 switch (attr) 6017 { 6018 case DW_AT_decl_file: 6019 if (dwarf_cu->DW_AT_decl_file_attributes_are_invalid()) 6020 { 6021 // llvm-gcc outputs invalid DW_AT_decl_file attributes that always 6022 // point to the compile unit file, so we clear this invalid value 6023 // so that we can still unique types efficiently. 6024 decl.SetFile(FileSpec ("<invalid>", false)); 6025 } 6026 else 6027 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); 6028 break; 6029 6030 case DW_AT_decl_line: 6031 decl.SetLine(form_value.Unsigned()); 6032 break; 6033 6034 case DW_AT_decl_column: 6035 decl.SetColumn(form_value.Unsigned()); 6036 break; 6037 6038 case DW_AT_name: 6039 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 6040 type_name_const_str.SetCString(type_name_cstr); 6041 break; 6042 6043 case DW_AT_byte_size: 6044 byte_size = form_value.Unsigned(); 6045 byte_size_valid = true; 6046 break; 6047 6048 case DW_AT_accessibility: 6049 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); 6050 break; 6051 6052 case DW_AT_declaration: 6053 is_forward_declaration = form_value.Boolean(); 6054 break; 6055 6056 case DW_AT_APPLE_runtime_class: 6057 class_language = (LanguageType)form_value.Signed(); 6058 break; 6059 6060 case DW_AT_APPLE_objc_complete_type: 6061 is_complete_objc_class = form_value.Signed(); 6062 break; 6063 6064 case DW_AT_allocated: 6065 case DW_AT_associated: 6066 case DW_AT_data_location: 6067 case DW_AT_description: 6068 case DW_AT_start_scope: 6069 case DW_AT_visibility: 6070 default: 6071 case DW_AT_sibling: 6072 break; 6073 } 6074 } 6075 } 6076 } 6077 6078 // UniqueDWARFASTType is large, so don't create a local variables on the 6079 // stack, put it on the heap. This function is often called recursively 6080 // and clang isn't good and sharing the stack space for variables in different blocks. 6081 std::unique_ptr<UniqueDWARFASTType> unique_ast_entry_ap(new UniqueDWARFASTType()); 6082 6083 // Only try and unique the type if it has a name. 6084 if (type_name_const_str && 6085 GetUniqueDWARFASTTypeMap().Find (type_name_const_str, 6086 this, 6087 dwarf_cu, 6088 die, 6089 decl, 6090 byte_size_valid ? byte_size : -1, 6091 *unique_ast_entry_ap)) 6092 { 6093 // We have already parsed this type or from another 6094 // compile unit. GCC loves to use the "one definition 6095 // rule" which can result in multiple definitions 6096 // of the same class over and over in each compile 6097 // unit. 6098 type_sp = unique_ast_entry_ap->m_type_sp; 6099 if (type_sp) 6100 { 6101 m_die_to_type[die] = type_sp.get(); 6102 return type_sp; 6103 } 6104 } 6105 6106 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 6107 6108 int tag_decl_kind = -1; 6109 AccessType default_accessibility = eAccessNone; 6110 if (tag == DW_TAG_structure_type) 6111 { 6112 tag_decl_kind = clang::TTK_Struct; 6113 default_accessibility = eAccessPublic; 6114 } 6115 else if (tag == DW_TAG_union_type) 6116 { 6117 tag_decl_kind = clang::TTK_Union; 6118 default_accessibility = eAccessPublic; 6119 } 6120 else if (tag == DW_TAG_class_type) 6121 { 6122 tag_decl_kind = clang::TTK_Class; 6123 default_accessibility = eAccessPrivate; 6124 } 6125 6126 if (byte_size_valid && byte_size == 0 && type_name_cstr && 6127 die->HasChildren() == false && 6128 sc.comp_unit->GetLanguage() == eLanguageTypeObjC) 6129 { 6130 // Work around an issue with clang at the moment where 6131 // forward declarations for objective C classes are emitted 6132 // as: 6133 // DW_TAG_structure_type [2] 6134 // DW_AT_name( "ForwardObjcClass" ) 6135 // DW_AT_byte_size( 0x00 ) 6136 // DW_AT_decl_file( "..." ) 6137 // DW_AT_decl_line( 1 ) 6138 // 6139 // Note that there is no DW_AT_declaration and there are 6140 // no children, and the byte size is zero. 6141 is_forward_declaration = true; 6142 } 6143 6144 if (class_language == eLanguageTypeObjC || 6145 class_language == eLanguageTypeObjC_plus_plus) 6146 { 6147 if (!is_complete_objc_class && Supports_DW_AT_APPLE_objc_complete_type(dwarf_cu)) 6148 { 6149 // We have a valid eSymbolTypeObjCClass class symbol whose 6150 // name matches the current objective C class that we 6151 // are trying to find and this DIE isn't the complete 6152 // definition (we checked is_complete_objc_class above and 6153 // know it is false), so the real definition is in here somewhere 6154 type_sp = FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true); 6155 6156 if (!type_sp && GetDebugMapSymfile ()) 6157 { 6158 // We weren't able to find a full declaration in 6159 // this DWARF, see if we have a declaration anywhere 6160 // else... 6161 type_sp = m_debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true); 6162 } 6163 6164 if (type_sp) 6165 { 6166 if (log) 6167 { 6168 GetObjectFile()->GetModule()->LogMessage (log, 6169 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an incomplete objc type, complete type is 0x%8.8" PRIx64, 6170 static_cast<void*>(this), 6171 die->GetOffset(), 6172 DW_TAG_value_to_name(tag), 6173 type_name_cstr, 6174 type_sp->GetID()); 6175 } 6176 6177 // We found a real definition for this type elsewhere 6178 // so lets use it and cache the fact that we found 6179 // a complete type for this die 6180 m_die_to_type[die] = type_sp.get(); 6181 return type_sp; 6182 } 6183 } 6184 } 6185 6186 6187 if (is_forward_declaration) 6188 { 6189 // We have a forward declaration to a type and we need 6190 // to try and find a full declaration. We look in the 6191 // current type index just in case we have a forward 6192 // declaration followed by an actual declarations in the 6193 // DWARF. If this fails, we need to look elsewhere... 6194 if (log) 6195 { 6196 GetObjectFile()->GetModule()->LogMessage (log, 6197 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, trying to find complete type", 6198 static_cast<void*>(this), 6199 die->GetOffset(), 6200 DW_TAG_value_to_name(tag), 6201 type_name_cstr); 6202 } 6203 6204 DWARFDeclContext die_decl_ctx; 6205 die->GetDWARFDeclContext(this, dwarf_cu, die_decl_ctx); 6206 6207 //type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str); 6208 type_sp = FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); 6209 6210 if (!type_sp && GetDebugMapSymfile ()) 6211 { 6212 // We weren't able to find a full declaration in 6213 // this DWARF, see if we have a declaration anywhere 6214 // else... 6215 type_sp = m_debug_map_symfile->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); 6216 } 6217 6218 if (type_sp) 6219 { 6220 if (log) 6221 { 6222 GetObjectFile()->GetModule()->LogMessage (log, 6223 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, complete type is 0x%8.8" PRIx64, 6224 static_cast<void*>(this), 6225 die->GetOffset(), 6226 DW_TAG_value_to_name(tag), 6227 type_name_cstr, 6228 type_sp->GetID()); 6229 } 6230 6231 // We found a real definition for this type elsewhere 6232 // so lets use it and cache the fact that we found 6233 // a complete type for this die 6234 m_die_to_type[die] = type_sp.get(); 6235 return type_sp; 6236 } 6237 } 6238 assert (tag_decl_kind != -1); 6239 bool clang_type_was_created = false; 6240 clang_type.SetClangType(ast.getASTContext(), m_forward_decl_die_to_clang_type.lookup (die)); 6241 if (!clang_type) 6242 { 6243 const DWARFDebugInfoEntry *decl_ctx_die; 6244 6245 clang::DeclContext *decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die); 6246 if (accessibility == eAccessNone && decl_ctx) 6247 { 6248 // Check the decl context that contains this class/struct/union. 6249 // If it is a class we must give it an accessibility. 6250 const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind(); 6251 if (DeclKindIsCXXClass (containing_decl_kind)) 6252 accessibility = default_accessibility; 6253 } 6254 6255 ClangASTMetadata metadata; 6256 metadata.SetUserID(MakeUserID(die->GetOffset())); 6257 metadata.SetIsDynamicCXXType(ClassOrStructIsVirtual (dwarf_cu, die)); 6258 6259 if (type_name_cstr && strchr (type_name_cstr, '<')) 6260 { 6261 ClangASTContext::TemplateParameterInfos template_param_infos; 6262 if (ParseTemplateParameterInfos (dwarf_cu, die, template_param_infos)) 6263 { 6264 clang::ClassTemplateDecl *class_template_decl = ParseClassTemplateDecl (decl_ctx, 6265 accessibility, 6266 type_name_cstr, 6267 tag_decl_kind, 6268 template_param_infos); 6269 6270 clang::ClassTemplateSpecializationDecl *class_specialization_decl = ast.CreateClassTemplateSpecializationDecl (decl_ctx, 6271 class_template_decl, 6272 tag_decl_kind, 6273 template_param_infos); 6274 clang_type = ast.CreateClassTemplateSpecializationType (class_specialization_decl); 6275 clang_type_was_created = true; 6276 6277 GetClangASTContext().SetMetadata (class_template_decl, metadata); 6278 GetClangASTContext().SetMetadata (class_specialization_decl, metadata); 6279 } 6280 } 6281 6282 if (!clang_type_was_created) 6283 { 6284 clang_type_was_created = true; 6285 clang_type = ast.CreateRecordType (decl_ctx, 6286 accessibility, 6287 type_name_cstr, 6288 tag_decl_kind, 6289 class_language, 6290 &metadata); 6291 } 6292 } 6293 6294 // Store a forward declaration to this class type in case any 6295 // parameters in any class methods need it for the clang 6296 // types for function prototypes. 6297 LinkDeclContextToDIE(clang_type.GetDeclContextForType(), die); 6298 type_sp.reset (new Type (MakeUserID(die->GetOffset()), 6299 this, 6300 type_name_const_str, 6301 byte_size, 6302 NULL, 6303 LLDB_INVALID_UID, 6304 Type::eEncodingIsUID, 6305 &decl, 6306 clang_type, 6307 Type::eResolveStateForward)); 6308 6309 type_sp->SetIsCompleteObjCClass(is_complete_objc_class); 6310 6311 6312 // Add our type to the unique type map so we don't 6313 // end up creating many copies of the same type over 6314 // and over in the ASTContext for our module 6315 unique_ast_entry_ap->m_type_sp = type_sp; 6316 unique_ast_entry_ap->m_symfile = this; 6317 unique_ast_entry_ap->m_cu = dwarf_cu; 6318 unique_ast_entry_ap->m_die = die; 6319 unique_ast_entry_ap->m_declaration = decl; 6320 unique_ast_entry_ap->m_byte_size = byte_size; 6321 GetUniqueDWARFASTTypeMap().Insert (type_name_const_str, 6322 *unique_ast_entry_ap); 6323 6324 if (is_forward_declaration && die->HasChildren()) 6325 { 6326 // Check to see if the DIE actually has a definition, some version of GCC will 6327 // emit DIEs with DW_AT_declaration set to true, but yet still have subprogram, 6328 // members, or inheritance, so we can't trust it 6329 const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); 6330 while (child_die) 6331 { 6332 switch (child_die->Tag()) 6333 { 6334 case DW_TAG_inheritance: 6335 case DW_TAG_subprogram: 6336 case DW_TAG_member: 6337 case DW_TAG_APPLE_property: 6338 case DW_TAG_class_type: 6339 case DW_TAG_structure_type: 6340 case DW_TAG_enumeration_type: 6341 case DW_TAG_typedef: 6342 case DW_TAG_union_type: 6343 child_die = NULL; 6344 is_forward_declaration = false; 6345 break; 6346 default: 6347 child_die = child_die->GetSibling(); 6348 break; 6349 } 6350 } 6351 } 6352 6353 if (!is_forward_declaration) 6354 { 6355 // Always start the definition for a class type so that 6356 // if the class has child classes or types that require 6357 // the class to be created for use as their decl contexts 6358 // the class will be ready to accept these child definitions. 6359 if (die->HasChildren() == false) 6360 { 6361 // No children for this struct/union/class, lets finish it 6362 clang_type.StartTagDeclarationDefinition (); 6363 clang_type.CompleteTagDeclarationDefinition (); 6364 6365 if (tag == DW_TAG_structure_type) // this only applies in C 6366 { 6367 clang::RecordDecl *record_decl = clang_type.GetAsRecordDecl(); 6368 6369 if (record_decl) 6370 m_record_decl_to_layout_map.insert(std::make_pair(record_decl, LayoutInfo())); 6371 } 6372 } 6373 else if (clang_type_was_created) 6374 { 6375 // Start the definition if the class is not objective C since 6376 // the underlying decls respond to isCompleteDefinition(). Objective 6377 // C decls don't respond to isCompleteDefinition() so we can't 6378 // start the declaration definition right away. For C++ class/union/structs 6379 // we want to start the definition in case the class is needed as the 6380 // declaration context for a contained class or type without the need 6381 // to complete that type.. 6382 6383 if (class_language != eLanguageTypeObjC && 6384 class_language != eLanguageTypeObjC_plus_plus) 6385 clang_type.StartTagDeclarationDefinition (); 6386 6387 // Leave this as a forward declaration until we need 6388 // to know the details of the type. lldb_private::Type 6389 // will automatically call the SymbolFile virtual function 6390 // "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition(Type *)" 6391 // When the definition needs to be defined. 6392 m_forward_decl_die_to_clang_type[die] = clang_type.GetOpaqueQualType(); 6393 m_forward_decl_clang_type_to_die[clang_type.RemoveFastQualifiers().GetOpaqueQualType()] = die; 6394 clang_type.SetHasExternalStorage (true); 6395 } 6396 } 6397 6398 } 6399 break; 6400 6401 case DW_TAG_enumeration_type: 6402 { 6403 // Set a bit that lets us know that we are currently parsing this 6404 m_die_to_type[die] = DIE_IS_BEING_PARSED; 6405 6406 lldb::user_id_t encoding_uid = DW_INVALID_OFFSET; 6407 6408 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 6409 if (num_attributes > 0) 6410 { 6411 uint32_t i; 6412 6413 for (i=0; i<num_attributes; ++i) 6414 { 6415 attr = attributes.AttributeAtIndex(i); 6416 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 6417 { 6418 switch (attr) 6419 { 6420 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 6421 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 6422 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 6423 case DW_AT_name: 6424 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 6425 type_name_const_str.SetCString(type_name_cstr); 6426 break; 6427 case DW_AT_type: encoding_uid = form_value.Reference(); break; 6428 case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; 6429 case DW_AT_accessibility: break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 6430 case DW_AT_declaration: break; //is_forward_declaration = form_value.Boolean(); break; 6431 case DW_AT_allocated: 6432 case DW_AT_associated: 6433 case DW_AT_bit_stride: 6434 case DW_AT_byte_stride: 6435 case DW_AT_data_location: 6436 case DW_AT_description: 6437 case DW_AT_start_scope: 6438 case DW_AT_visibility: 6439 case DW_AT_specification: 6440 case DW_AT_abstract_origin: 6441 case DW_AT_sibling: 6442 break; 6443 } 6444 } 6445 } 6446 6447 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 6448 6449 ClangASTType enumerator_clang_type; 6450 clang_type.SetClangType (ast.getASTContext(), m_forward_decl_die_to_clang_type.lookup (die)); 6451 if (!clang_type) 6452 { 6453 if (encoding_uid != DW_INVALID_OFFSET) 6454 { 6455 Type *enumerator_type = ResolveTypeUID(encoding_uid); 6456 if (enumerator_type) 6457 enumerator_clang_type = enumerator_type->GetClangFullType(); 6458 } 6459 6460 if (!enumerator_clang_type) 6461 enumerator_clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (NULL, 6462 DW_ATE_signed, 6463 byte_size * 8); 6464 6465 clang_type = ast.CreateEnumerationType (type_name_cstr, 6466 GetClangDeclContextContainingDIE (dwarf_cu, die, NULL), 6467 decl, 6468 enumerator_clang_type); 6469 } 6470 else 6471 { 6472 enumerator_clang_type = clang_type.GetEnumerationIntegerType (); 6473 } 6474 6475 LinkDeclContextToDIE(clang_type.GetDeclContextForType(), die); 6476 6477 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 6478 this, 6479 type_name_const_str, 6480 byte_size, 6481 NULL, 6482 encoding_uid, 6483 Type::eEncodingIsUID, 6484 &decl, 6485 clang_type, 6486 Type::eResolveStateForward)); 6487 6488 clang_type.StartTagDeclarationDefinition (); 6489 if (die->HasChildren()) 6490 { 6491 SymbolContext cu_sc(GetCompUnitForDWARFCompUnit(dwarf_cu)); 6492 bool is_signed = false; 6493 enumerator_clang_type.IsIntegerType(is_signed); 6494 ParseChildEnumerators(cu_sc, clang_type, is_signed, type_sp->GetByteSize(), dwarf_cu, die); 6495 } 6496 clang_type.CompleteTagDeclarationDefinition (); 6497 } 6498 } 6499 break; 6500 6501 case DW_TAG_inlined_subroutine: 6502 case DW_TAG_subprogram: 6503 case DW_TAG_subroutine_type: 6504 { 6505 // Set a bit that lets us know that we are currently parsing this 6506 m_die_to_type[die] = DIE_IS_BEING_PARSED; 6507 6508 //const char *mangled = NULL; 6509 dw_offset_t type_die_offset = DW_INVALID_OFFSET; 6510 bool is_variadic = false; 6511 bool is_inline = false; 6512 bool is_static = false; 6513 bool is_virtual = false; 6514 bool is_explicit = false; 6515 bool is_artificial = false; 6516 dw_offset_t specification_die_offset = DW_INVALID_OFFSET; 6517 dw_offset_t abstract_origin_die_offset = DW_INVALID_OFFSET; 6518 dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET; 6519 6520 unsigned type_quals = 0; 6521 clang::StorageClass storage = clang::SC_None;//, Extern, Static, PrivateExtern 6522 6523 6524 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 6525 if (num_attributes > 0) 6526 { 6527 uint32_t i; 6528 for (i=0; i<num_attributes; ++i) 6529 { 6530 attr = attributes.AttributeAtIndex(i); 6531 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 6532 { 6533 switch (attr) 6534 { 6535 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 6536 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 6537 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 6538 case DW_AT_name: 6539 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 6540 type_name_const_str.SetCString(type_name_cstr); 6541 break; 6542 6543 case DW_AT_linkage_name: 6544 case DW_AT_MIPS_linkage_name: break; // mangled = form_value.AsCString(&get_debug_str_data()); break; 6545 case DW_AT_type: type_die_offset = form_value.Reference(); break; 6546 case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 6547 case DW_AT_declaration: break; // is_forward_declaration = form_value.Boolean(); break; 6548 case DW_AT_inline: is_inline = form_value.Boolean(); break; 6549 case DW_AT_virtuality: is_virtual = form_value.Boolean(); break; 6550 case DW_AT_explicit: is_explicit = form_value.Boolean(); break; 6551 case DW_AT_artificial: is_artificial = form_value.Boolean(); break; 6552 6553 6554 case DW_AT_external: 6555 if (form_value.Unsigned()) 6556 { 6557 if (storage == clang::SC_None) 6558 storage = clang::SC_Extern; 6559 else 6560 storage = clang::SC_PrivateExtern; 6561 } 6562 break; 6563 6564 case DW_AT_specification: 6565 specification_die_offset = form_value.Reference(); 6566 break; 6567 6568 case DW_AT_abstract_origin: 6569 abstract_origin_die_offset = form_value.Reference(); 6570 break; 6571 6572 case DW_AT_object_pointer: 6573 object_pointer_die_offset = form_value.Reference(); 6574 break; 6575 6576 case DW_AT_allocated: 6577 case DW_AT_associated: 6578 case DW_AT_address_class: 6579 case DW_AT_calling_convention: 6580 case DW_AT_data_location: 6581 case DW_AT_elemental: 6582 case DW_AT_entry_pc: 6583 case DW_AT_frame_base: 6584 case DW_AT_high_pc: 6585 case DW_AT_low_pc: 6586 case DW_AT_prototyped: 6587 case DW_AT_pure: 6588 case DW_AT_ranges: 6589 case DW_AT_recursive: 6590 case DW_AT_return_addr: 6591 case DW_AT_segment: 6592 case DW_AT_start_scope: 6593 case DW_AT_static_link: 6594 case DW_AT_trampoline: 6595 case DW_AT_visibility: 6596 case DW_AT_vtable_elem_location: 6597 case DW_AT_description: 6598 case DW_AT_sibling: 6599 break; 6600 } 6601 } 6602 } 6603 } 6604 6605 std::string object_pointer_name; 6606 if (object_pointer_die_offset != DW_INVALID_OFFSET) 6607 { 6608 // Get the name from the object pointer die 6609 StreamString s; 6610 if (DWARFDebugInfoEntry::GetName (this, dwarf_cu, object_pointer_die_offset, s)) 6611 { 6612 object_pointer_name.assign(s.GetData()); 6613 } 6614 } 6615 6616 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 6617 6618 ClangASTType return_clang_type; 6619 Type *func_type = NULL; 6620 6621 if (type_die_offset != DW_INVALID_OFFSET) 6622 func_type = ResolveTypeUID(type_die_offset); 6623 6624 if (func_type) 6625 return_clang_type = func_type->GetClangForwardType(); 6626 else 6627 return_clang_type = ast.GetBasicType(eBasicTypeVoid); 6628 6629 6630 std::vector<ClangASTType> function_param_types; 6631 std::vector<clang::ParmVarDecl*> function_param_decls; 6632 6633 // Parse the function children for the parameters 6634 6635 const DWARFDebugInfoEntry *decl_ctx_die = NULL; 6636 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die); 6637 const clang::Decl::Kind containing_decl_kind = containing_decl_ctx->getDeclKind(); 6638 6639 const bool is_cxx_method = DeclKindIsCXXClass (containing_decl_kind); 6640 // Start off static. This will be set to false in ParseChildParameters(...) 6641 // if we find a "this" parameters as the first parameter 6642 if (is_cxx_method) 6643 is_static = true; 6644 6645 if (die->HasChildren()) 6646 { 6647 bool skip_artificial = true; 6648 ParseChildParameters (sc, 6649 containing_decl_ctx, 6650 dwarf_cu, 6651 die, 6652 skip_artificial, 6653 is_static, 6654 is_variadic, 6655 function_param_types, 6656 function_param_decls, 6657 type_quals); 6658 } 6659 6660 // clang_type will get the function prototype clang type after this call 6661 clang_type = ast.CreateFunctionType (return_clang_type, 6662 function_param_types.data(), 6663 function_param_types.size(), 6664 is_variadic, 6665 type_quals); 6666 6667 bool ignore_containing_context = false; 6668 6669 if (type_name_cstr) 6670 { 6671 bool type_handled = false; 6672 if (tag == DW_TAG_subprogram) 6673 { 6674 ObjCLanguageRuntime::MethodName objc_method (type_name_cstr, true); 6675 if (objc_method.IsValid(true)) 6676 { 6677 ClangASTType class_opaque_type; 6678 ConstString class_name(objc_method.GetClassName()); 6679 if (class_name) 6680 { 6681 TypeSP complete_objc_class_type_sp (FindCompleteObjCDefinitionTypeForDIE (NULL, class_name, false)); 6682 6683 if (complete_objc_class_type_sp) 6684 { 6685 ClangASTType type_clang_forward_type = complete_objc_class_type_sp->GetClangForwardType(); 6686 if (type_clang_forward_type.IsObjCObjectOrInterfaceType ()) 6687 class_opaque_type = type_clang_forward_type; 6688 } 6689 } 6690 6691 if (class_opaque_type) 6692 { 6693 // If accessibility isn't set to anything valid, assume public for 6694 // now... 6695 if (accessibility == eAccessNone) 6696 accessibility = eAccessPublic; 6697 6698 clang::ObjCMethodDecl *objc_method_decl = class_opaque_type.AddMethodToObjCObjectType (type_name_cstr, 6699 clang_type, 6700 accessibility, 6701 is_artificial); 6702 type_handled = objc_method_decl != NULL; 6703 if (type_handled) 6704 { 6705 LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(objc_method_decl), die); 6706 GetClangASTContext().SetMetadataAsUserID (objc_method_decl, MakeUserID(die->GetOffset())); 6707 } 6708 else 6709 { 6710 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", 6711 die->GetOffset(), 6712 tag, 6713 DW_TAG_value_to_name(tag)); 6714 } 6715 } 6716 } 6717 else if (is_cxx_method) 6718 { 6719 // Look at the parent of this DIE and see if is is 6720 // a class or struct and see if this is actually a 6721 // C++ method 6722 Type *class_type = ResolveType (dwarf_cu, decl_ctx_die); 6723 if (class_type) 6724 { 6725 if (class_type->GetID() != MakeUserID(decl_ctx_die->GetOffset())) 6726 { 6727 // We uniqued the parent class of this function to another class 6728 // so we now need to associate all dies under "decl_ctx_die" to 6729 // DIEs in the DIE for "class_type"... 6730 SymbolFileDWARF *class_symfile = NULL; 6731 DWARFCompileUnitSP class_type_cu_sp; 6732 const DWARFDebugInfoEntry *class_type_die = NULL; 6733 6734 SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile(); 6735 if (debug_map_symfile) 6736 { 6737 class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex(SymbolFileDWARFDebugMap::GetOSOIndexFromUserID(class_type->GetID())); 6738 class_type_die = class_symfile->DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp); 6739 } 6740 else 6741 { 6742 class_symfile = this; 6743 class_type_die = DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp); 6744 } 6745 if (class_type_die) 6746 { 6747 DWARFDIECollection failures; 6748 6749 CopyUniqueClassMethodTypes (class_symfile, 6750 class_type, 6751 class_type_cu_sp.get(), 6752 class_type_die, 6753 dwarf_cu, 6754 decl_ctx_die, 6755 failures); 6756 6757 // FIXME do something with these failures that's smarter than 6758 // just dropping them on the ground. Unfortunately classes don't 6759 // like having stuff added to them after their definitions are 6760 // complete... 6761 6762 type_ptr = m_die_to_type[die]; 6763 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) 6764 { 6765 type_sp = type_ptr->shared_from_this(); 6766 break; 6767 } 6768 } 6769 } 6770 6771 if (specification_die_offset != DW_INVALID_OFFSET) 6772 { 6773 // We have a specification which we are going to base our function 6774 // prototype off of, so we need this type to be completed so that the 6775 // m_die_to_decl_ctx for the method in the specification has a valid 6776 // clang decl context. 6777 class_type->GetClangForwardType(); 6778 // If we have a specification, then the function type should have been 6779 // made with the specification and not with this die. 6780 DWARFCompileUnitSP spec_cu_sp; 6781 const DWARFDebugInfoEntry* spec_die = DebugInfo()->GetDIEPtr(specification_die_offset, &spec_cu_sp); 6782 clang::DeclContext *spec_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, spec_die); 6783 if (spec_clang_decl_ctx) 6784 { 6785 LinkDeclContextToDIE(spec_clang_decl_ctx, die); 6786 } 6787 else 6788 { 6789 GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_specification(0x%8.8x) has no decl\n", 6790 MakeUserID(die->GetOffset()), 6791 specification_die_offset); 6792 } 6793 type_handled = true; 6794 } 6795 else if (abstract_origin_die_offset != DW_INVALID_OFFSET) 6796 { 6797 // We have a specification which we are going to base our function 6798 // prototype off of, so we need this type to be completed so that the 6799 // m_die_to_decl_ctx for the method in the abstract origin has a valid 6800 // clang decl context. 6801 class_type->GetClangForwardType(); 6802 6803 DWARFCompileUnitSP abs_cu_sp; 6804 const DWARFDebugInfoEntry* abs_die = DebugInfo()->GetDIEPtr(abstract_origin_die_offset, &abs_cu_sp); 6805 clang::DeclContext *abs_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, abs_die); 6806 if (abs_clang_decl_ctx) 6807 { 6808 LinkDeclContextToDIE (abs_clang_decl_ctx, die); 6809 } 6810 else 6811 { 6812 GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_abstract_origin(0x%8.8x) has no decl\n", 6813 MakeUserID(die->GetOffset()), 6814 abstract_origin_die_offset); 6815 } 6816 type_handled = true; 6817 } 6818 else 6819 { 6820 ClangASTType class_opaque_type = class_type->GetClangForwardType(); 6821 if (class_opaque_type.IsCXXClassType ()) 6822 { 6823 if (class_opaque_type.IsBeingDefined ()) 6824 { 6825 // Neither GCC 4.2 nor clang++ currently set a valid accessibility 6826 // in the DWARF for C++ methods... Default to public for now... 6827 if (accessibility == eAccessNone) 6828 accessibility = eAccessPublic; 6829 6830 if (!is_static && !die->HasChildren()) 6831 { 6832 // We have a C++ member function with no children (this pointer!) 6833 // and clang will get mad if we try and make a function that isn't 6834 // well formed in the DWARF, so we will just skip it... 6835 type_handled = true; 6836 } 6837 else 6838 { 6839 clang::CXXMethodDecl *cxx_method_decl; 6840 // REMOVE THE CRASH DESCRIPTION BELOW 6841 Host::SetCrashDescriptionWithFormat ("SymbolFileDWARF::ParseType() is adding a method %s to class %s in DIE 0x%8.8" PRIx64 " from %s", 6842 type_name_cstr, 6843 class_type->GetName().GetCString(), 6844 MakeUserID(die->GetOffset()), 6845 m_obj_file->GetFileSpec().GetPath().c_str()); 6846 6847 const bool is_attr_used = false; 6848 6849 cxx_method_decl = class_opaque_type.AddMethodToCXXRecordType (type_name_cstr, 6850 clang_type, 6851 accessibility, 6852 is_virtual, 6853 is_static, 6854 is_inline, 6855 is_explicit, 6856 is_attr_used, 6857 is_artificial); 6858 6859 type_handled = cxx_method_decl != NULL; 6860 6861 if (type_handled) 6862 { 6863 LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(cxx_method_decl), die); 6864 6865 Host::SetCrashDescription (NULL); 6866 6867 6868 ClangASTMetadata metadata; 6869 metadata.SetUserID(MakeUserID(die->GetOffset())); 6870 6871 if (!object_pointer_name.empty()) 6872 { 6873 metadata.SetObjectPtrName(object_pointer_name.c_str()); 6874 if (log) 6875 log->Printf ("Setting object pointer name: %s on method object %p.\n", 6876 object_pointer_name.c_str(), 6877 static_cast<void*>(cxx_method_decl)); 6878 } 6879 GetClangASTContext().SetMetadata (cxx_method_decl, metadata); 6880 } 6881 else 6882 { 6883 ignore_containing_context = true; 6884 } 6885 } 6886 } 6887 else 6888 { 6889 // We were asked to parse the type for a method in a class, yet the 6890 // class hasn't been asked to complete itself through the 6891 // clang::ExternalASTSource protocol, so we need to just have the 6892 // class complete itself and do things the right way, then our 6893 // DIE should then have an entry in the m_die_to_type map. First 6894 // we need to modify the m_die_to_type so it doesn't think we are 6895 // trying to parse this DIE anymore... 6896 m_die_to_type[die] = NULL; 6897 6898 // Now we get the full type to force our class type to complete itself 6899 // using the clang::ExternalASTSource protocol which will parse all 6900 // base classes and all methods (including the method for this DIE). 6901 class_type->GetClangFullType(); 6902 6903 // The type for this DIE should have been filled in the function call above 6904 type_ptr = m_die_to_type[die]; 6905 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) 6906 { 6907 type_sp = type_ptr->shared_from_this(); 6908 break; 6909 } 6910 6911 // FIXME This is fixing some even uglier behavior but we really need to 6912 // uniq the methods of each class as well as the class itself. 6913 // <rdar://problem/11240464> 6914 type_handled = true; 6915 } 6916 } 6917 } 6918 } 6919 } 6920 } 6921 6922 if (!type_handled) 6923 { 6924 // We just have a function that isn't part of a class 6925 clang::FunctionDecl *function_decl = ast.CreateFunctionDeclaration (ignore_containing_context ? GetClangASTContext().GetTranslationUnitDecl() : containing_decl_ctx, 6926 type_name_cstr, 6927 clang_type, 6928 storage, 6929 is_inline); 6930 6931 // if (template_param_infos.GetSize() > 0) 6932 // { 6933 // clang::FunctionTemplateDecl *func_template_decl = ast.CreateFunctionTemplateDecl (containing_decl_ctx, 6934 // function_decl, 6935 // type_name_cstr, 6936 // template_param_infos); 6937 // 6938 // ast.CreateFunctionTemplateSpecializationInfo (function_decl, 6939 // func_template_decl, 6940 // template_param_infos); 6941 // } 6942 // Add the decl to our DIE to decl context map 6943 assert (function_decl); 6944 LinkDeclContextToDIE(function_decl, die); 6945 if (!function_param_decls.empty()) 6946 ast.SetFunctionParameters (function_decl, 6947 &function_param_decls.front(), 6948 function_param_decls.size()); 6949 6950 ClangASTMetadata metadata; 6951 metadata.SetUserID(MakeUserID(die->GetOffset())); 6952 6953 if (!object_pointer_name.empty()) 6954 { 6955 metadata.SetObjectPtrName(object_pointer_name.c_str()); 6956 if (log) 6957 log->Printf ("Setting object pointer name: %s on function object %p.", 6958 object_pointer_name.c_str(), 6959 static_cast<void*>(function_decl)); 6960 } 6961 GetClangASTContext().SetMetadata (function_decl, metadata); 6962 } 6963 } 6964 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 6965 this, 6966 type_name_const_str, 6967 0, 6968 NULL, 6969 LLDB_INVALID_UID, 6970 Type::eEncodingIsUID, 6971 &decl, 6972 clang_type, 6973 Type::eResolveStateFull)); 6974 assert(type_sp.get()); 6975 } 6976 break; 6977 6978 case DW_TAG_array_type: 6979 { 6980 // Set a bit that lets us know that we are currently parsing this 6981 m_die_to_type[die] = DIE_IS_BEING_PARSED; 6982 6983 lldb::user_id_t type_die_offset = DW_INVALID_OFFSET; 6984 int64_t first_index = 0; 6985 uint32_t byte_stride = 0; 6986 uint32_t bit_stride = 0; 6987 bool is_vector = false; 6988 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 6989 6990 if (num_attributes > 0) 6991 { 6992 uint32_t i; 6993 for (i=0; i<num_attributes; ++i) 6994 { 6995 attr = attributes.AttributeAtIndex(i); 6996 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 6997 { 6998 switch (attr) 6999 { 7000 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 7001 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 7002 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 7003 case DW_AT_name: 7004 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 7005 type_name_const_str.SetCString(type_name_cstr); 7006 break; 7007 7008 case DW_AT_type: type_die_offset = form_value.Reference(); break; 7009 case DW_AT_byte_size: break; // byte_size = form_value.Unsigned(); break; 7010 case DW_AT_byte_stride: byte_stride = form_value.Unsigned(); break; 7011 case DW_AT_bit_stride: bit_stride = form_value.Unsigned(); break; 7012 case DW_AT_GNU_vector: is_vector = form_value.Boolean(); break; 7013 case DW_AT_accessibility: break; // accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 7014 case DW_AT_declaration: break; // is_forward_declaration = form_value.Boolean(); break; 7015 case DW_AT_allocated: 7016 case DW_AT_associated: 7017 case DW_AT_data_location: 7018 case DW_AT_description: 7019 case DW_AT_ordering: 7020 case DW_AT_start_scope: 7021 case DW_AT_visibility: 7022 case DW_AT_specification: 7023 case DW_AT_abstract_origin: 7024 case DW_AT_sibling: 7025 break; 7026 } 7027 } 7028 } 7029 7030 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 7031 7032 Type *element_type = ResolveTypeUID(type_die_offset); 7033 7034 if (element_type) 7035 { 7036 std::vector<uint64_t> element_orders; 7037 ParseChildArrayInfo(sc, dwarf_cu, die, first_index, element_orders, byte_stride, bit_stride); 7038 if (byte_stride == 0 && bit_stride == 0) 7039 byte_stride = element_type->GetByteSize(); 7040 ClangASTType array_element_type = element_type->GetClangForwardType(); 7041 uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride; 7042 if (element_orders.size() > 0) 7043 { 7044 uint64_t num_elements = 0; 7045 std::vector<uint64_t>::const_reverse_iterator pos; 7046 std::vector<uint64_t>::const_reverse_iterator end = element_orders.rend(); 7047 for (pos = element_orders.rbegin(); pos != end; ++pos) 7048 { 7049 num_elements = *pos; 7050 clang_type = ast.CreateArrayType (array_element_type, 7051 num_elements, 7052 is_vector); 7053 array_element_type = clang_type; 7054 array_element_bit_stride = num_elements ? 7055 array_element_bit_stride * num_elements : 7056 array_element_bit_stride; 7057 } 7058 } 7059 else 7060 { 7061 clang_type = ast.CreateArrayType (array_element_type, 0, is_vector); 7062 } 7063 ConstString empty_name; 7064 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 7065 this, 7066 empty_name, 7067 array_element_bit_stride / 8, 7068 NULL, 7069 type_die_offset, 7070 Type::eEncodingIsUID, 7071 &decl, 7072 clang_type, 7073 Type::eResolveStateFull)); 7074 type_sp->SetEncodingType (element_type); 7075 } 7076 } 7077 } 7078 break; 7079 7080 case DW_TAG_ptr_to_member_type: 7081 { 7082 dw_offset_t type_die_offset = DW_INVALID_OFFSET; 7083 dw_offset_t containing_type_die_offset = DW_INVALID_OFFSET; 7084 7085 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 7086 7087 if (num_attributes > 0) { 7088 uint32_t i; 7089 for (i=0; i<num_attributes; ++i) 7090 { 7091 attr = attributes.AttributeAtIndex(i); 7092 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 7093 { 7094 switch (attr) 7095 { 7096 case DW_AT_type: 7097 type_die_offset = form_value.Reference(); break; 7098 case DW_AT_containing_type: 7099 containing_type_die_offset = form_value.Reference(); break; 7100 } 7101 } 7102 } 7103 7104 Type *pointee_type = ResolveTypeUID(type_die_offset); 7105 Type *class_type = ResolveTypeUID(containing_type_die_offset); 7106 7107 ClangASTType pointee_clang_type = pointee_type->GetClangForwardType(); 7108 ClangASTType class_clang_type = class_type->GetClangLayoutType(); 7109 7110 clang_type = pointee_clang_type.CreateMemberPointerType(class_clang_type); 7111 7112 byte_size = clang_type.GetByteSize(nullptr); 7113 7114 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 7115 this, 7116 type_name_const_str, 7117 byte_size, 7118 NULL, 7119 LLDB_INVALID_UID, 7120 Type::eEncodingIsUID, 7121 NULL, 7122 clang_type, 7123 Type::eResolveStateForward)); 7124 } 7125 7126 break; 7127 } 7128 default: 7129 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", 7130 die->GetOffset(), 7131 tag, 7132 DW_TAG_value_to_name(tag)); 7133 break; 7134 } 7135 7136 if (type_sp.get()) 7137 { 7138 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die); 7139 dw_tag_t sc_parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; 7140 7141 SymbolContextScope * symbol_context_scope = NULL; 7142 if (sc_parent_tag == DW_TAG_compile_unit) 7143 { 7144 symbol_context_scope = sc.comp_unit; 7145 } 7146 else if (sc.function != NULL && sc_parent_die) 7147 { 7148 symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); 7149 if (symbol_context_scope == NULL) 7150 symbol_context_scope = sc.function; 7151 } 7152 7153 if (symbol_context_scope != NULL) 7154 { 7155 type_sp->SetSymbolContextScope(symbol_context_scope); 7156 } 7157 7158 // We are ready to put this type into the uniqued list up at the module level 7159 type_list->Insert (type_sp); 7160 7161 m_die_to_type[die] = type_sp.get(); 7162 } 7163 } 7164 else if (type_ptr != DIE_IS_BEING_PARSED) 7165 { 7166 type_sp = type_ptr->shared_from_this(); 7167 } 7168 } 7169 return type_sp; 7170 } 7171 7172 size_t 7173 SymbolFileDWARF::ParseTypes 7174 ( 7175 const SymbolContext& sc, 7176 DWARFCompileUnit* dwarf_cu, 7177 const DWARFDebugInfoEntry *die, 7178 bool parse_siblings, 7179 bool parse_children 7180 ) 7181 { 7182 size_t types_added = 0; 7183 while (die != NULL) 7184 { 7185 bool type_is_new = false; 7186 if (ParseType(sc, dwarf_cu, die, &type_is_new).get()) 7187 { 7188 if (type_is_new) 7189 ++types_added; 7190 } 7191 7192 if (parse_children && die->HasChildren()) 7193 { 7194 if (die->Tag() == DW_TAG_subprogram) 7195 { 7196 SymbolContext child_sc(sc); 7197 child_sc.function = sc.comp_unit->FindFunctionByUID(MakeUserID(die->GetOffset())).get(); 7198 types_added += ParseTypes(child_sc, dwarf_cu, die->GetFirstChild(), true, true); 7199 } 7200 else 7201 types_added += ParseTypes(sc, dwarf_cu, die->GetFirstChild(), true, true); 7202 } 7203 7204 if (parse_siblings) 7205 die = die->GetSibling(); 7206 else 7207 die = NULL; 7208 } 7209 return types_added; 7210 } 7211 7212 7213 size_t 7214 SymbolFileDWARF::ParseFunctionBlocks (const SymbolContext &sc) 7215 { 7216 assert(sc.comp_unit && sc.function); 7217 size_t functions_added = 0; 7218 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 7219 if (dwarf_cu) 7220 { 7221 dw_offset_t function_die_offset = sc.function->GetID(); 7222 const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(function_die_offset); 7223 if (function_die) 7224 { 7225 ParseFunctionBlocks(sc, &sc.function->GetBlock (false), dwarf_cu, function_die, LLDB_INVALID_ADDRESS, 0); 7226 } 7227 } 7228 7229 return functions_added; 7230 } 7231 7232 7233 size_t 7234 SymbolFileDWARF::ParseTypes (const SymbolContext &sc) 7235 { 7236 // At least a compile unit must be valid 7237 assert(sc.comp_unit); 7238 size_t types_added = 0; 7239 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 7240 if (dwarf_cu) 7241 { 7242 if (sc.function) 7243 { 7244 dw_offset_t function_die_offset = sc.function->GetID(); 7245 const DWARFDebugInfoEntry *func_die = dwarf_cu->GetDIEPtr(function_die_offset); 7246 if (func_die && func_die->HasChildren()) 7247 { 7248 types_added = ParseTypes(sc, dwarf_cu, func_die->GetFirstChild(), true, true); 7249 } 7250 } 7251 else 7252 { 7253 const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->DIE(); 7254 if (dwarf_cu_die && dwarf_cu_die->HasChildren()) 7255 { 7256 types_added = ParseTypes(sc, dwarf_cu, dwarf_cu_die->GetFirstChild(), true, true); 7257 } 7258 } 7259 } 7260 7261 return types_added; 7262 } 7263 7264 size_t 7265 SymbolFileDWARF::ParseVariablesForContext (const SymbolContext& sc) 7266 { 7267 if (sc.comp_unit != NULL) 7268 { 7269 DWARFDebugInfo* info = DebugInfo(); 7270 if (info == NULL) 7271 return 0; 7272 7273 if (sc.function) 7274 { 7275 DWARFCompileUnit* dwarf_cu = info->GetCompileUnitContainingDIE(sc.function->GetID()).get(); 7276 7277 if (dwarf_cu == NULL) 7278 return 0; 7279 7280 const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(sc.function->GetID()); 7281 7282 dw_addr_t func_lo_pc = function_die->GetAttributeValueAsUnsigned (this, dwarf_cu, DW_AT_low_pc, LLDB_INVALID_ADDRESS); 7283 if (func_lo_pc != LLDB_INVALID_ADDRESS) 7284 { 7285 const size_t num_variables = ParseVariables(sc, dwarf_cu, func_lo_pc, function_die->GetFirstChild(), true, true); 7286 7287 // Let all blocks know they have parse all their variables 7288 sc.function->GetBlock (false).SetDidParseVariables (true, true); 7289 return num_variables; 7290 } 7291 } 7292 else if (sc.comp_unit) 7293 { 7294 DWARFCompileUnit* dwarf_cu = info->GetCompileUnit(sc.comp_unit->GetID()).get(); 7295 7296 if (dwarf_cu == NULL) 7297 return 0; 7298 7299 uint32_t vars_added = 0; 7300 VariableListSP variables (sc.comp_unit->GetVariableList(false)); 7301 7302 if (variables.get() == NULL) 7303 { 7304 variables.reset(new VariableList()); 7305 sc.comp_unit->SetVariableList(variables); 7306 7307 DWARFCompileUnit* match_dwarf_cu = NULL; 7308 const DWARFDebugInfoEntry* die = NULL; 7309 DIEArray die_offsets; 7310 if (m_using_apple_tables) 7311 { 7312 if (m_apple_names_ap.get()) 7313 { 7314 DWARFMappedHash::DIEInfoArray hash_data_array; 7315 if (m_apple_names_ap->AppendAllDIEsInRange (dwarf_cu->GetOffset(), 7316 dwarf_cu->GetNextCompileUnitOffset(), 7317 hash_data_array)) 7318 { 7319 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); 7320 } 7321 } 7322 } 7323 else 7324 { 7325 // Index if we already haven't to make sure the compile units 7326 // get indexed and make their global DIE index list 7327 if (!m_indexed) 7328 Index (); 7329 7330 m_global_index.FindAllEntriesForCompileUnit (dwarf_cu->GetOffset(), 7331 dwarf_cu->GetNextCompileUnitOffset(), 7332 die_offsets); 7333 } 7334 7335 const size_t num_matches = die_offsets.size(); 7336 if (num_matches) 7337 { 7338 DWARFDebugInfo* debug_info = DebugInfo(); 7339 for (size_t i=0; i<num_matches; ++i) 7340 { 7341 const dw_offset_t die_offset = die_offsets[i]; 7342 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &match_dwarf_cu); 7343 if (die) 7344 { 7345 VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, LLDB_INVALID_ADDRESS)); 7346 if (var_sp) 7347 { 7348 variables->AddVariableIfUnique (var_sp); 7349 ++vars_added; 7350 } 7351 } 7352 else 7353 { 7354 if (m_using_apple_tables) 7355 { 7356 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x)\n", die_offset); 7357 } 7358 } 7359 7360 } 7361 } 7362 } 7363 return vars_added; 7364 } 7365 } 7366 return 0; 7367 } 7368 7369 7370 VariableSP 7371 SymbolFileDWARF::ParseVariableDIE 7372 ( 7373 const SymbolContext& sc, 7374 DWARFCompileUnit* dwarf_cu, 7375 const DWARFDebugInfoEntry *die, 7376 const lldb::addr_t func_low_pc 7377 ) 7378 { 7379 VariableSP var_sp (m_die_to_variable_sp[die]); 7380 if (var_sp) 7381 return var_sp; // Already been parsed! 7382 7383 const dw_tag_t tag = die->Tag(); 7384 ModuleSP module = GetObjectFile()->GetModule(); 7385 7386 if ((tag == DW_TAG_variable) || 7387 (tag == DW_TAG_constant) || 7388 (tag == DW_TAG_formal_parameter && sc.function)) 7389 { 7390 DWARFDebugInfoEntry::Attributes attributes; 7391 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 7392 if (num_attributes > 0) 7393 { 7394 const char *name = NULL; 7395 const char *mangled = NULL; 7396 Declaration decl; 7397 uint32_t i; 7398 lldb::user_id_t type_uid = LLDB_INVALID_UID; 7399 DWARFExpression location; 7400 bool is_external = false; 7401 bool is_artificial = false; 7402 bool location_is_const_value_data = false; 7403 bool has_explicit_location = false; 7404 DWARFFormValue const_value; 7405 //AccessType accessibility = eAccessNone; 7406 7407 for (i=0; i<num_attributes; ++i) 7408 { 7409 dw_attr_t attr = attributes.AttributeAtIndex(i); 7410 DWARFFormValue form_value; 7411 7412 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 7413 { 7414 switch (attr) 7415 { 7416 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 7417 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 7418 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 7419 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; 7420 case DW_AT_linkage_name: 7421 case DW_AT_MIPS_linkage_name: mangled = form_value.AsCString(&get_debug_str_data()); break; 7422 case DW_AT_type: type_uid = form_value.Reference(); break; 7423 case DW_AT_external: is_external = form_value.Boolean(); break; 7424 case DW_AT_const_value: 7425 // If we have already found a DW_AT_location attribute, ignore this attribute. 7426 if (!has_explicit_location) 7427 { 7428 location_is_const_value_data = true; 7429 // The constant value will be either a block, a data value or a string. 7430 const DWARFDataExtractor& debug_info_data = get_debug_info_data(); 7431 if (DWARFFormValue::IsBlockForm(form_value.Form())) 7432 { 7433 // Retrieve the value as a block expression. 7434 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 7435 uint32_t block_length = form_value.Unsigned(); 7436 location.CopyOpcodeData(module, debug_info_data, block_offset, block_length); 7437 } 7438 else if (DWARFFormValue::IsDataForm(form_value.Form())) 7439 { 7440 // Retrieve the value as a data expression. 7441 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (attributes.CompileUnitAtIndex(i)->GetAddressByteSize(), attributes.CompileUnitAtIndex(i)->IsDWARF64()); 7442 uint32_t data_offset = attributes.DIEOffsetAtIndex(i); 7443 uint32_t data_length = fixed_form_sizes[form_value.Form()]; 7444 if (data_length == 0) 7445 { 7446 const uint8_t *data_pointer = form_value.BlockData(); 7447 if (data_pointer) 7448 { 7449 form_value.Unsigned(); 7450 } 7451 else if (DWARFFormValue::IsDataForm(form_value.Form())) 7452 { 7453 // we need to get the byte size of the type later after we create the variable 7454 const_value = form_value; 7455 } 7456 } 7457 else 7458 location.CopyOpcodeData(module, debug_info_data, data_offset, data_length); 7459 } 7460 else 7461 { 7462 // Retrieve the value as a string expression. 7463 if (form_value.Form() == DW_FORM_strp) 7464 { 7465 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (attributes.CompileUnitAtIndex(i)->GetAddressByteSize(), attributes.CompileUnitAtIndex(i)->IsDWARF64()); 7466 uint32_t data_offset = attributes.DIEOffsetAtIndex(i); 7467 uint32_t data_length = fixed_form_sizes[form_value.Form()]; 7468 location.CopyOpcodeData(module, debug_info_data, data_offset, data_length); 7469 } 7470 else 7471 { 7472 const char *str = form_value.AsCString(&debug_info_data); 7473 uint32_t string_offset = str - (const char *)debug_info_data.GetDataStart(); 7474 uint32_t string_length = strlen(str) + 1; 7475 location.CopyOpcodeData(module, debug_info_data, string_offset, string_length); 7476 } 7477 } 7478 } 7479 break; 7480 case DW_AT_location: 7481 { 7482 location_is_const_value_data = false; 7483 has_explicit_location = true; 7484 if (form_value.BlockData()) 7485 { 7486 const DWARFDataExtractor& debug_info_data = get_debug_info_data(); 7487 7488 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 7489 uint32_t block_length = form_value.Unsigned(); 7490 location.CopyOpcodeData(module, get_debug_info_data(), block_offset, block_length); 7491 } 7492 else 7493 { 7494 const DWARFDataExtractor& debug_loc_data = get_debug_loc_data(); 7495 const dw_offset_t debug_loc_offset = form_value.Unsigned(); 7496 7497 size_t loc_list_length = DWARFLocationList::Size(debug_loc_data, debug_loc_offset); 7498 if (loc_list_length > 0) 7499 { 7500 location.CopyOpcodeData(module, debug_loc_data, debug_loc_offset, loc_list_length); 7501 assert (func_low_pc != LLDB_INVALID_ADDRESS); 7502 location.SetLocationListSlide (func_low_pc - attributes.CompileUnitAtIndex(i)->GetBaseAddress()); 7503 } 7504 } 7505 } 7506 break; 7507 7508 case DW_AT_artificial: is_artificial = form_value.Boolean(); break; 7509 case DW_AT_accessibility: break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 7510 case DW_AT_declaration: 7511 case DW_AT_description: 7512 case DW_AT_endianity: 7513 case DW_AT_segment: 7514 case DW_AT_start_scope: 7515 case DW_AT_visibility: 7516 default: 7517 case DW_AT_abstract_origin: 7518 case DW_AT_sibling: 7519 case DW_AT_specification: 7520 break; 7521 } 7522 } 7523 } 7524 7525 ValueType scope = eValueTypeInvalid; 7526 7527 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die); 7528 dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; 7529 SymbolContextScope * symbol_context_scope = NULL; 7530 7531 if (!mangled) 7532 { 7533 // LLDB relies on the mangled name (DW_TAG_linkage_name or DW_AT_MIPS_linkage_name) to 7534 // generate fully qualified names of global variables with commands like "frame var j". 7535 // For example, if j were an int variable holding a value 4 and declared in a namespace 7536 // B which in turn is contained in a namespace A, the command "frame var j" returns 7537 // "(int) A::B::j = 4". If the compiler does not emit a linkage name, we should be able 7538 // to generate a fully qualified name from the declaration context. 7539 if (die->GetParent()->Tag() == DW_TAG_compile_unit && 7540 LanguageRuntime::LanguageIsCPlusPlus(dwarf_cu->GetLanguageType())) 7541 { 7542 DWARFDeclContext decl_ctx; 7543 7544 die->GetDWARFDeclContext(this, dwarf_cu, decl_ctx); 7545 mangled = decl_ctx.GetQualifiedNameAsConstString().GetCString(); 7546 } 7547 } 7548 7549 // DWARF doesn't specify if a DW_TAG_variable is a local, global 7550 // or static variable, so we have to do a little digging by 7551 // looking at the location of a variable to see if it contains 7552 // a DW_OP_addr opcode _somewhere_ in the definition. I say 7553 // somewhere because clang likes to combine small global variables 7554 // into the same symbol and have locations like: 7555 // DW_OP_addr(0x1000), DW_OP_constu(2), DW_OP_plus 7556 // So if we don't have a DW_TAG_formal_parameter, we can look at 7557 // the location to see if it contains a DW_OP_addr opcode, and 7558 // then we can correctly classify our variables. 7559 if (tag == DW_TAG_formal_parameter) 7560 scope = eValueTypeVariableArgument; 7561 else 7562 { 7563 bool op_error = false; 7564 // Check if the location has a DW_OP_addr with any address value... 7565 lldb::addr_t location_DW_OP_addr = LLDB_INVALID_ADDRESS; 7566 if (!location_is_const_value_data) 7567 { 7568 location_DW_OP_addr = location.GetLocation_DW_OP_addr (0, op_error); 7569 if (op_error) 7570 { 7571 StreamString strm; 7572 location.DumpLocationForAddress (&strm, eDescriptionLevelFull, 0, 0, NULL); 7573 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()); 7574 } 7575 } 7576 7577 if (location_DW_OP_addr != LLDB_INVALID_ADDRESS) 7578 { 7579 if (is_external) 7580 scope = eValueTypeVariableGlobal; 7581 else 7582 scope = eValueTypeVariableStatic; 7583 7584 7585 SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile (); 7586 7587 if (debug_map_symfile) 7588 { 7589 // When leaving the DWARF in the .o files on darwin, 7590 // when we have a global variable that wasn't initialized, 7591 // the .o file might not have allocated a virtual 7592 // address for the global variable. In this case it will 7593 // have created a symbol for the global variable 7594 // that is undefined/data and external and the value will 7595 // be the byte size of the variable. When we do the 7596 // address map in SymbolFileDWARFDebugMap we rely on 7597 // having an address, we need to do some magic here 7598 // so we can get the correct address for our global 7599 // variable. The address for all of these entries 7600 // will be zero, and there will be an undefined symbol 7601 // in this object file, and the executable will have 7602 // a matching symbol with a good address. So here we 7603 // dig up the correct address and replace it in the 7604 // location for the variable, and set the variable's 7605 // symbol context scope to be that of the main executable 7606 // so the file address will resolve correctly. 7607 bool linked_oso_file_addr = false; 7608 if (is_external && location_DW_OP_addr == 0) 7609 { 7610 // we have a possible uninitialized extern global 7611 ConstString const_name(mangled ? mangled : name); 7612 ObjectFile *debug_map_objfile = debug_map_symfile->GetObjectFile(); 7613 if (debug_map_objfile) 7614 { 7615 Symtab *debug_map_symtab = debug_map_objfile->GetSymtab(); 7616 if (debug_map_symtab) 7617 { 7618 Symbol *exe_symbol = debug_map_symtab->FindFirstSymbolWithNameAndType (const_name, 7619 eSymbolTypeData, 7620 Symtab::eDebugYes, 7621 Symtab::eVisibilityExtern); 7622 if (exe_symbol) 7623 { 7624 if (exe_symbol->ValueIsAddress()) 7625 { 7626 const addr_t exe_file_addr = exe_symbol->GetAddress().GetFileAddress(); 7627 if (exe_file_addr != LLDB_INVALID_ADDRESS) 7628 { 7629 if (location.Update_DW_OP_addr (exe_file_addr)) 7630 { 7631 linked_oso_file_addr = true; 7632 symbol_context_scope = exe_symbol; 7633 } 7634 } 7635 } 7636 } 7637 } 7638 } 7639 } 7640 7641 if (!linked_oso_file_addr) 7642 { 7643 // The DW_OP_addr is not zero, but it contains a .o file address which 7644 // needs to be linked up correctly. 7645 const lldb::addr_t exe_file_addr = debug_map_symfile->LinkOSOFileAddress(this, location_DW_OP_addr); 7646 if (exe_file_addr != LLDB_INVALID_ADDRESS) 7647 { 7648 // Update the file address for this variable 7649 location.Update_DW_OP_addr (exe_file_addr); 7650 } 7651 else 7652 { 7653 // Variable didn't make it into the final executable 7654 return var_sp; 7655 } 7656 } 7657 } 7658 } 7659 else 7660 { 7661 scope = eValueTypeVariableLocal; 7662 } 7663 } 7664 7665 if (symbol_context_scope == NULL) 7666 { 7667 switch (parent_tag) 7668 { 7669 case DW_TAG_subprogram: 7670 case DW_TAG_inlined_subroutine: 7671 case DW_TAG_lexical_block: 7672 if (sc.function) 7673 { 7674 symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); 7675 if (symbol_context_scope == NULL) 7676 symbol_context_scope = sc.function; 7677 } 7678 break; 7679 7680 default: 7681 symbol_context_scope = sc.comp_unit; 7682 break; 7683 } 7684 } 7685 7686 if (symbol_context_scope) 7687 { 7688 SymbolFileTypeSP type_sp(new SymbolFileType(*this, type_uid)); 7689 7690 if (const_value.Form() && type_sp && type_sp->GetType()) 7691 location.CopyOpcodeData(const_value.Unsigned(), type_sp->GetType()->GetByteSize(), dwarf_cu->GetAddressByteSize()); 7692 7693 var_sp.reset (new Variable (MakeUserID(die->GetOffset()), 7694 name, 7695 mangled, 7696 type_sp, 7697 scope, 7698 symbol_context_scope, 7699 &decl, 7700 location, 7701 is_external, 7702 is_artificial)); 7703 7704 var_sp->SetLocationIsConstantValueData (location_is_const_value_data); 7705 } 7706 else 7707 { 7708 // Not ready to parse this variable yet. It might be a global 7709 // or static variable that is in a function scope and the function 7710 // in the symbol context wasn't filled in yet 7711 return var_sp; 7712 } 7713 } 7714 // Cache var_sp even if NULL (the variable was just a specification or 7715 // was missing vital information to be able to be displayed in the debugger 7716 // (missing location due to optimization, etc)) so we don't re-parse 7717 // this DIE over and over later... 7718 m_die_to_variable_sp[die] = var_sp; 7719 } 7720 return var_sp; 7721 } 7722 7723 7724 const DWARFDebugInfoEntry * 7725 SymbolFileDWARF::FindBlockContainingSpecification (dw_offset_t func_die_offset, 7726 dw_offset_t spec_block_die_offset, 7727 DWARFCompileUnit **result_die_cu_handle) 7728 { 7729 // Give the concrete function die specified by "func_die_offset", find the 7730 // concrete block whose DW_AT_specification or DW_AT_abstract_origin points 7731 // to "spec_block_die_offset" 7732 DWARFDebugInfo* info = DebugInfo(); 7733 7734 const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint(func_die_offset, result_die_cu_handle); 7735 if (die) 7736 { 7737 assert (*result_die_cu_handle); 7738 return FindBlockContainingSpecification (*result_die_cu_handle, die, spec_block_die_offset, result_die_cu_handle); 7739 } 7740 return NULL; 7741 } 7742 7743 7744 const DWARFDebugInfoEntry * 7745 SymbolFileDWARF::FindBlockContainingSpecification(DWARFCompileUnit* dwarf_cu, 7746 const DWARFDebugInfoEntry *die, 7747 dw_offset_t spec_block_die_offset, 7748 DWARFCompileUnit **result_die_cu_handle) 7749 { 7750 if (die) 7751 { 7752 switch (die->Tag()) 7753 { 7754 case DW_TAG_subprogram: 7755 case DW_TAG_inlined_subroutine: 7756 case DW_TAG_lexical_block: 7757 { 7758 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_specification, DW_INVALID_OFFSET) == spec_block_die_offset) 7759 { 7760 *result_die_cu_handle = dwarf_cu; 7761 return die; 7762 } 7763 7764 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_abstract_origin, DW_INVALID_OFFSET) == spec_block_die_offset) 7765 { 7766 *result_die_cu_handle = dwarf_cu; 7767 return die; 7768 } 7769 } 7770 break; 7771 } 7772 7773 // Give the concrete function die specified by "func_die_offset", find the 7774 // concrete block whose DW_AT_specification or DW_AT_abstract_origin points 7775 // to "spec_block_die_offset" 7776 for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); child_die != NULL; child_die = child_die->GetSibling()) 7777 { 7778 const DWARFDebugInfoEntry *result_die = FindBlockContainingSpecification (dwarf_cu, 7779 child_die, 7780 spec_block_die_offset, 7781 result_die_cu_handle); 7782 if (result_die) 7783 return result_die; 7784 } 7785 } 7786 7787 *result_die_cu_handle = NULL; 7788 return NULL; 7789 } 7790 7791 size_t 7792 SymbolFileDWARF::ParseVariables 7793 ( 7794 const SymbolContext& sc, 7795 DWARFCompileUnit* dwarf_cu, 7796 const lldb::addr_t func_low_pc, 7797 const DWARFDebugInfoEntry *orig_die, 7798 bool parse_siblings, 7799 bool parse_children, 7800 VariableList* cc_variable_list 7801 ) 7802 { 7803 if (orig_die == NULL) 7804 return 0; 7805 7806 VariableListSP variable_list_sp; 7807 7808 size_t vars_added = 0; 7809 const DWARFDebugInfoEntry *die = orig_die; 7810 while (die != NULL) 7811 { 7812 dw_tag_t tag = die->Tag(); 7813 7814 // Check to see if we have already parsed this variable or constant? 7815 if (m_die_to_variable_sp[die]) 7816 { 7817 if (cc_variable_list) 7818 cc_variable_list->AddVariableIfUnique (m_die_to_variable_sp[die]); 7819 } 7820 else 7821 { 7822 // We haven't already parsed it, lets do that now. 7823 if ((tag == DW_TAG_variable) || 7824 (tag == DW_TAG_constant) || 7825 (tag == DW_TAG_formal_parameter && sc.function)) 7826 { 7827 if (variable_list_sp.get() == NULL) 7828 { 7829 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(orig_die); 7830 dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; 7831 switch (parent_tag) 7832 { 7833 case DW_TAG_compile_unit: 7834 if (sc.comp_unit != NULL) 7835 { 7836 variable_list_sp = sc.comp_unit->GetVariableList(false); 7837 if (variable_list_sp.get() == NULL) 7838 { 7839 variable_list_sp.reset(new VariableList()); 7840 sc.comp_unit->SetVariableList(variable_list_sp); 7841 } 7842 } 7843 else 7844 { 7845 GetObjectFile()->GetModule()->ReportError ("parent 0x%8.8" PRIx64 " %s with no valid compile unit in symbol context for 0x%8.8" PRIx64 " %s.\n", 7846 MakeUserID(sc_parent_die->GetOffset()), 7847 DW_TAG_value_to_name (parent_tag), 7848 MakeUserID(orig_die->GetOffset()), 7849 DW_TAG_value_to_name (orig_die->Tag())); 7850 } 7851 break; 7852 7853 case DW_TAG_subprogram: 7854 case DW_TAG_inlined_subroutine: 7855 case DW_TAG_lexical_block: 7856 if (sc.function != NULL) 7857 { 7858 // Check to see if we already have parsed the variables for the given scope 7859 7860 Block *block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); 7861 if (block == NULL) 7862 { 7863 // This must be a specification or abstract origin with 7864 // a concrete block counterpart in the current function. We need 7865 // to find the concrete block so we can correctly add the 7866 // variable to it 7867 DWARFCompileUnit *concrete_block_die_cu = dwarf_cu; 7868 const DWARFDebugInfoEntry *concrete_block_die = FindBlockContainingSpecification (sc.function->GetID(), 7869 sc_parent_die->GetOffset(), 7870 &concrete_block_die_cu); 7871 if (concrete_block_die) 7872 block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(concrete_block_die->GetOffset())); 7873 } 7874 7875 if (block != NULL) 7876 { 7877 const bool can_create = false; 7878 variable_list_sp = block->GetBlockVariableList (can_create); 7879 if (variable_list_sp.get() == NULL) 7880 { 7881 variable_list_sp.reset(new VariableList()); 7882 block->SetVariableList(variable_list_sp); 7883 } 7884 } 7885 } 7886 break; 7887 7888 default: 7889 GetObjectFile()->GetModule()->ReportError ("didn't find appropriate parent DIE for variable list for 0x%8.8" PRIx64 " %s.\n", 7890 MakeUserID(orig_die->GetOffset()), 7891 DW_TAG_value_to_name (orig_die->Tag())); 7892 break; 7893 } 7894 } 7895 7896 if (variable_list_sp) 7897 { 7898 VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, func_low_pc)); 7899 if (var_sp) 7900 { 7901 variable_list_sp->AddVariableIfUnique (var_sp); 7902 if (cc_variable_list) 7903 cc_variable_list->AddVariableIfUnique (var_sp); 7904 ++vars_added; 7905 } 7906 } 7907 } 7908 } 7909 7910 bool skip_children = (sc.function == NULL && tag == DW_TAG_subprogram); 7911 7912 if (!skip_children && parse_children && die->HasChildren()) 7913 { 7914 vars_added += ParseVariables(sc, dwarf_cu, func_low_pc, die->GetFirstChild(), true, true, cc_variable_list); 7915 } 7916 7917 if (parse_siblings) 7918 die = die->GetSibling(); 7919 else 7920 die = NULL; 7921 } 7922 return vars_added; 7923 } 7924 7925 //------------------------------------------------------------------ 7926 // PluginInterface protocol 7927 //------------------------------------------------------------------ 7928 ConstString 7929 SymbolFileDWARF::GetPluginName() 7930 { 7931 return GetPluginNameStatic(); 7932 } 7933 7934 uint32_t 7935 SymbolFileDWARF::GetPluginVersion() 7936 { 7937 return 1; 7938 } 7939 7940 void 7941 SymbolFileDWARF::CompleteTagDecl (void *baton, clang::TagDecl *decl) 7942 { 7943 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 7944 ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); 7945 if (clang_type) 7946 symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); 7947 } 7948 7949 void 7950 SymbolFileDWARF::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *decl) 7951 { 7952 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 7953 ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); 7954 if (clang_type) 7955 symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); 7956 } 7957 7958 void 7959 SymbolFileDWARF::DumpIndexes () 7960 { 7961 StreamFile s(stdout, false); 7962 7963 s.Printf ("DWARF index for (%s) '%s':", 7964 GetObjectFile()->GetModule()->GetArchitecture().GetArchitectureName(), 7965 GetObjectFile()->GetFileSpec().GetPath().c_str()); 7966 s.Printf("\nFunction basenames:\n"); m_function_basename_index.Dump (&s); 7967 s.Printf("\nFunction fullnames:\n"); m_function_fullname_index.Dump (&s); 7968 s.Printf("\nFunction methods:\n"); m_function_method_index.Dump (&s); 7969 s.Printf("\nFunction selectors:\n"); m_function_selector_index.Dump (&s); 7970 s.Printf("\nObjective C class selectors:\n"); m_objc_class_selectors_index.Dump (&s); 7971 s.Printf("\nGlobals and statics:\n"); m_global_index.Dump (&s); 7972 s.Printf("\nTypes:\n"); m_type_index.Dump (&s); 7973 s.Printf("\nNamepaces:\n"); m_namespace_index.Dump (&s); 7974 } 7975 7976 void 7977 SymbolFileDWARF::SearchDeclContext (const clang::DeclContext *decl_context, 7978 const char *name, 7979 llvm::SmallVectorImpl <clang::NamedDecl *> *results) 7980 { 7981 DeclContextToDIEMap::iterator iter = m_decl_ctx_to_die.find(decl_context); 7982 7983 if (iter == m_decl_ctx_to_die.end()) 7984 return; 7985 7986 for (DIEPointerSet::iterator pos = iter->second.begin(), end = iter->second.end(); pos != end; ++pos) 7987 { 7988 const DWARFDebugInfoEntry *context_die = *pos; 7989 7990 if (!results) 7991 return; 7992 7993 DWARFDebugInfo* info = DebugInfo(); 7994 7995 DIEArray die_offsets; 7996 7997 DWARFCompileUnit* dwarf_cu = NULL; 7998 const DWARFDebugInfoEntry* die = NULL; 7999 8000 if (m_using_apple_tables) 8001 { 8002 if (m_apple_types_ap.get()) 8003 m_apple_types_ap->FindByName (name, die_offsets); 8004 } 8005 else 8006 { 8007 if (!m_indexed) 8008 Index (); 8009 8010 m_type_index.Find (ConstString(name), die_offsets); 8011 } 8012 8013 const size_t num_matches = die_offsets.size(); 8014 8015 if (num_matches) 8016 { 8017 for (size_t i = 0; i < num_matches; ++i) 8018 { 8019 const dw_offset_t die_offset = die_offsets[i]; 8020 die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 8021 8022 if (die->GetParent() != context_die) 8023 continue; 8024 8025 Type *matching_type = ResolveType (dwarf_cu, die); 8026 8027 clang::QualType qual_type = matching_type->GetClangForwardType().GetQualType(); 8028 8029 if (const clang::TagType *tag_type = llvm::dyn_cast<clang::TagType>(qual_type.getTypePtr())) 8030 { 8031 clang::TagDecl *tag_decl = tag_type->getDecl(); 8032 results->push_back(tag_decl); 8033 } 8034 else if (const clang::TypedefType *typedef_type = llvm::dyn_cast<clang::TypedefType>(qual_type.getTypePtr())) 8035 { 8036 clang::TypedefNameDecl *typedef_decl = typedef_type->getDecl(); 8037 results->push_back(typedef_decl); 8038 } 8039 } 8040 } 8041 } 8042 } 8043 8044 void 8045 SymbolFileDWARF::FindExternalVisibleDeclsByName (void *baton, 8046 const clang::DeclContext *decl_context, 8047 clang::DeclarationName decl_name, 8048 llvm::SmallVectorImpl <clang::NamedDecl *> *results) 8049 { 8050 8051 switch (decl_context->getDeclKind()) 8052 { 8053 case clang::Decl::Namespace: 8054 case clang::Decl::TranslationUnit: 8055 { 8056 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 8057 symbol_file_dwarf->SearchDeclContext (decl_context, decl_name.getAsString().c_str(), results); 8058 } 8059 break; 8060 default: 8061 break; 8062 } 8063 } 8064 8065 bool 8066 SymbolFileDWARF::LayoutRecordType(void *baton, const clang::RecordDecl *record_decl, uint64_t &size, 8067 uint64_t &alignment, 8068 llvm::DenseMap<const clang::FieldDecl *, uint64_t> &field_offsets, 8069 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets, 8070 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets) 8071 { 8072 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 8073 return symbol_file_dwarf->LayoutRecordType (record_decl, size, alignment, field_offsets, base_offsets, vbase_offsets); 8074 } 8075 8076 bool 8077 SymbolFileDWARF::LayoutRecordType(const clang::RecordDecl *record_decl, uint64_t &bit_size, uint64_t &alignment, 8078 llvm::DenseMap<const clang::FieldDecl *, uint64_t> &field_offsets, 8079 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets, 8080 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets) 8081 { 8082 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 8083 RecordDeclToLayoutMap::iterator pos = m_record_decl_to_layout_map.find (record_decl); 8084 bool success = false; 8085 base_offsets.clear(); 8086 vbase_offsets.clear(); 8087 if (pos != m_record_decl_to_layout_map.end()) 8088 { 8089 bit_size = pos->second.bit_size; 8090 alignment = pos->second.alignment; 8091 field_offsets.swap(pos->second.field_offsets); 8092 base_offsets.swap (pos->second.base_offsets); 8093 vbase_offsets.swap (pos->second.vbase_offsets); 8094 m_record_decl_to_layout_map.erase(pos); 8095 success = true; 8096 } 8097 else 8098 { 8099 bit_size = 0; 8100 alignment = 0; 8101 field_offsets.clear(); 8102 } 8103 8104 if (log) 8105 GetObjectFile()->GetModule()->LogMessage (log, 8106 "SymbolFileDWARF::LayoutRecordType (record_decl = %p, bit_size = %" PRIu64 ", alignment = %" PRIu64 ", field_offsets[%u],base_offsets[%u], vbase_offsets[%u]) success = %i", 8107 static_cast<const void*>(record_decl), 8108 bit_size, alignment, 8109 static_cast<uint32_t>(field_offsets.size()), 8110 static_cast<uint32_t>(base_offsets.size()), 8111 static_cast<uint32_t>(vbase_offsets.size()), 8112 success); 8113 return success; 8114 } 8115 8116 8117 SymbolFileDWARFDebugMap * 8118 SymbolFileDWARF::GetDebugMapSymfile () 8119 { 8120 if (m_debug_map_symfile == NULL && !m_debug_map_module_wp.expired()) 8121 { 8122 lldb::ModuleSP module_sp (m_debug_map_module_wp.lock()); 8123 if (module_sp) 8124 { 8125 SymbolVendor *sym_vendor = module_sp->GetSymbolVendor(); 8126 if (sym_vendor) 8127 m_debug_map_symfile = (SymbolFileDWARFDebugMap *)sym_vendor->GetSymbolFile(); 8128 } 8129 } 8130 return m_debug_map_symfile; 8131 } 8132 8133 8134