1 //===-- SymbolFileDWARF.cpp ------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "SymbolFileDWARF.h" 11 12 // Other libraries and framework includes 13 #include "clang/AST/ASTConsumer.h" 14 #include "clang/AST/ASTContext.h" 15 #include "clang/AST/Decl.h" 16 #include "clang/AST/DeclGroup.h" 17 #include "clang/AST/DeclObjC.h" 18 #include "clang/AST/DeclTemplate.h" 19 #include "clang/Basic/Builtins.h" 20 #include "clang/Basic/IdentifierTable.h" 21 #include "clang/Basic/LangOptions.h" 22 #include "clang/Basic/SourceManager.h" 23 #include "clang/Basic/TargetInfo.h" 24 #include "clang/Basic/Specifiers.h" 25 #include "clang/Sema/DeclSpec.h" 26 27 #include "llvm/Support/Casting.h" 28 29 #include "lldb/Core/Module.h" 30 #include "lldb/Core/PluginManager.h" 31 #include "lldb/Core/RegularExpression.h" 32 #include "lldb/Core/Scalar.h" 33 #include "lldb/Core/Section.h" 34 #include "lldb/Core/StreamFile.h" 35 #include "lldb/Core/StreamString.h" 36 #include "lldb/Core/Timer.h" 37 #include "lldb/Core/Value.h" 38 39 #include "lldb/Host/Host.h" 40 41 #include "lldb/Symbol/Block.h" 42 #include "lldb/Symbol/ClangExternalASTSourceCallbacks.h" 43 #include "lldb/Symbol/CompileUnit.h" 44 #include "lldb/Symbol/LineTable.h" 45 #include "lldb/Symbol/ObjectFile.h" 46 #include "lldb/Symbol/SymbolVendor.h" 47 #include "lldb/Symbol/VariableList.h" 48 49 #include "lldb/Target/ObjCLanguageRuntime.h" 50 #include "lldb/Target/CPPLanguageRuntime.h" 51 52 #include "DWARFCompileUnit.h" 53 #include "DWARFDebugAbbrev.h" 54 #include "DWARFDebugAranges.h" 55 #include "DWARFDebugInfo.h" 56 #include "DWARFDebugInfoEntry.h" 57 #include "DWARFDebugLine.h" 58 #include "DWARFDebugPubnames.h" 59 #include "DWARFDebugRanges.h" 60 #include "DWARFDeclContext.h" 61 #include "DWARFDIECollection.h" 62 #include "DWARFFormValue.h" 63 #include "DWARFLocationList.h" 64 #include "LogChannelDWARF.h" 65 #include "SymbolFileDWARFDebugMap.h" 66 67 #include <map> 68 69 #include <ctype.h> 70 #include <string.h> 71 72 //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN 73 74 #ifdef ENABLE_DEBUG_PRINTF 75 #include <stdio.h> 76 #define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__) 77 #else 78 #define DEBUG_PRINTF(fmt, ...) 79 #endif 80 81 #define DIE_IS_BEING_PARSED ((lldb_private::Type*)1) 82 83 using namespace lldb; 84 using namespace lldb_private; 85 86 //static inline bool 87 //child_requires_parent_class_union_or_struct_to_be_completed (dw_tag_t tag) 88 //{ 89 // switch (tag) 90 // { 91 // default: 92 // break; 93 // case DW_TAG_subprogram: 94 // case DW_TAG_inlined_subroutine: 95 // case DW_TAG_class_type: 96 // case DW_TAG_structure_type: 97 // case DW_TAG_union_type: 98 // return true; 99 // } 100 // return false; 101 //} 102 // 103 static AccessType 104 DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility) 105 { 106 switch (dwarf_accessibility) 107 { 108 case DW_ACCESS_public: return eAccessPublic; 109 case DW_ACCESS_private: return eAccessPrivate; 110 case DW_ACCESS_protected: return eAccessProtected; 111 default: break; 112 } 113 return eAccessNone; 114 } 115 116 static const char* 117 removeHostnameFromPathname(const char* path_from_dwarf) 118 { 119 if (!path_from_dwarf || !path_from_dwarf[0]) 120 { 121 return path_from_dwarf; 122 } 123 124 const char *colon_pos = strchr(path_from_dwarf, ':'); 125 if (!colon_pos) 126 { 127 return path_from_dwarf; 128 } 129 130 // check whether we have a windows path, and so the first character 131 // is a drive-letter not a hostname. 132 if ( 133 colon_pos == path_from_dwarf + 1 && 134 isalpha(*path_from_dwarf) && 135 strlen(path_from_dwarf) > 2 && 136 '\\' == path_from_dwarf[2]) 137 { 138 return path_from_dwarf; 139 } 140 141 return colon_pos + 1; 142 } 143 144 #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE) 145 146 class DIEStack 147 { 148 public: 149 150 void Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) 151 { 152 m_dies.push_back (DIEInfo(cu, die)); 153 } 154 155 156 void LogDIEs (Log *log, SymbolFileDWARF *dwarf) 157 { 158 StreamString log_strm; 159 const size_t n = m_dies.size(); 160 log_strm.Printf("DIEStack[%" PRIu64 "]:\n", (uint64_t)n); 161 for (size_t i=0; i<n; i++) 162 { 163 DWARFCompileUnit *cu = m_dies[i].cu; 164 const DWARFDebugInfoEntry *die = m_dies[i].die; 165 std::string qualified_name; 166 die->GetQualifiedName(dwarf, cu, qualified_name); 167 log_strm.Printf ("[%" PRIu64 "] 0x%8.8x: %s name='%s'\n", 168 (uint64_t)i, 169 die->GetOffset(), 170 DW_TAG_value_to_name(die->Tag()), 171 qualified_name.c_str()); 172 } 173 log->PutCString(log_strm.GetData()); 174 } 175 void Pop () 176 { 177 m_dies.pop_back(); 178 } 179 180 class ScopedPopper 181 { 182 public: 183 ScopedPopper (DIEStack &die_stack) : 184 m_die_stack (die_stack), 185 m_valid (false) 186 { 187 } 188 189 void 190 Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) 191 { 192 m_valid = true; 193 m_die_stack.Push (cu, die); 194 } 195 196 ~ScopedPopper () 197 { 198 if (m_valid) 199 m_die_stack.Pop(); 200 } 201 202 203 204 protected: 205 DIEStack &m_die_stack; 206 bool m_valid; 207 }; 208 209 protected: 210 struct DIEInfo { 211 DIEInfo (DWARFCompileUnit *c, const DWARFDebugInfoEntry *d) : 212 cu(c), 213 die(d) 214 { 215 } 216 DWARFCompileUnit *cu; 217 const DWARFDebugInfoEntry *die; 218 }; 219 typedef std::vector<DIEInfo> Stack; 220 Stack m_dies; 221 }; 222 #endif 223 224 void 225 SymbolFileDWARF::Initialize() 226 { 227 LogChannelDWARF::Initialize(); 228 PluginManager::RegisterPlugin (GetPluginNameStatic(), 229 GetPluginDescriptionStatic(), 230 CreateInstance); 231 } 232 233 void 234 SymbolFileDWARF::Terminate() 235 { 236 PluginManager::UnregisterPlugin (CreateInstance); 237 LogChannelDWARF::Initialize(); 238 } 239 240 241 lldb_private::ConstString 242 SymbolFileDWARF::GetPluginNameStatic() 243 { 244 static ConstString g_name("dwarf"); 245 return g_name; 246 } 247 248 const char * 249 SymbolFileDWARF::GetPluginDescriptionStatic() 250 { 251 return "DWARF and DWARF3 debug symbol file reader."; 252 } 253 254 255 SymbolFile* 256 SymbolFileDWARF::CreateInstance (ObjectFile* obj_file) 257 { 258 return new SymbolFileDWARF(obj_file); 259 } 260 261 TypeList * 262 SymbolFileDWARF::GetTypeList () 263 { 264 if (GetDebugMapSymfile ()) 265 return m_debug_map_symfile->GetTypeList(); 266 return m_obj_file->GetModule()->GetTypeList(); 267 268 } 269 void 270 SymbolFileDWARF::GetTypes (DWARFCompileUnit* cu, 271 const DWARFDebugInfoEntry *die, 272 dw_offset_t min_die_offset, 273 dw_offset_t max_die_offset, 274 uint32_t type_mask, 275 TypeSet &type_set) 276 { 277 if (cu) 278 { 279 if (die) 280 { 281 const dw_offset_t die_offset = die->GetOffset(); 282 283 if (die_offset >= max_die_offset) 284 return; 285 286 if (die_offset >= min_die_offset) 287 { 288 const dw_tag_t tag = die->Tag(); 289 290 bool add_type = false; 291 292 switch (tag) 293 { 294 case DW_TAG_array_type: add_type = (type_mask & eTypeClassArray ) != 0; break; 295 case DW_TAG_unspecified_type: 296 case DW_TAG_base_type: add_type = (type_mask & eTypeClassBuiltin ) != 0; break; 297 case DW_TAG_class_type: add_type = (type_mask & eTypeClassClass ) != 0; break; 298 case DW_TAG_structure_type: add_type = (type_mask & eTypeClassStruct ) != 0; break; 299 case DW_TAG_union_type: add_type = (type_mask & eTypeClassUnion ) != 0; break; 300 case DW_TAG_enumeration_type: add_type = (type_mask & eTypeClassEnumeration ) != 0; break; 301 case DW_TAG_subroutine_type: 302 case DW_TAG_subprogram: 303 case DW_TAG_inlined_subroutine: add_type = (type_mask & eTypeClassFunction ) != 0; break; 304 case DW_TAG_pointer_type: add_type = (type_mask & eTypeClassPointer ) != 0; break; 305 case DW_TAG_rvalue_reference_type: 306 case DW_TAG_reference_type: add_type = (type_mask & eTypeClassReference ) != 0; break; 307 case DW_TAG_typedef: add_type = (type_mask & eTypeClassTypedef ) != 0; break; 308 case DW_TAG_ptr_to_member_type: add_type = (type_mask & eTypeClassMemberPointer ) != 0; break; 309 } 310 311 if (add_type) 312 { 313 const bool assert_not_being_parsed = true; 314 Type *type = ResolveTypeUID (cu, die, assert_not_being_parsed); 315 if (type) 316 { 317 if (type_set.find(type) == type_set.end()) 318 type_set.insert(type); 319 } 320 } 321 } 322 323 for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); 324 child_die != NULL; 325 child_die = child_die->GetSibling()) 326 { 327 GetTypes (cu, child_die, min_die_offset, max_die_offset, type_mask, type_set); 328 } 329 } 330 } 331 } 332 333 size_t 334 SymbolFileDWARF::GetTypes (SymbolContextScope *sc_scope, 335 uint32_t type_mask, 336 TypeList &type_list) 337 338 { 339 TypeSet type_set; 340 341 CompileUnit *comp_unit = NULL; 342 DWARFCompileUnit* dwarf_cu = NULL; 343 if (sc_scope) 344 comp_unit = sc_scope->CalculateSymbolContextCompileUnit(); 345 346 if (comp_unit) 347 { 348 dwarf_cu = GetDWARFCompileUnit(comp_unit); 349 if (dwarf_cu == 0) 350 return 0; 351 GetTypes (dwarf_cu, 352 dwarf_cu->DIE(), 353 dwarf_cu->GetOffset(), 354 dwarf_cu->GetNextCompileUnitOffset(), 355 type_mask, 356 type_set); 357 } 358 else 359 { 360 DWARFDebugInfo* info = DebugInfo(); 361 if (info) 362 { 363 const size_t num_cus = info->GetNumCompileUnits(); 364 for (size_t cu_idx=0; cu_idx<num_cus; ++cu_idx) 365 { 366 dwarf_cu = info->GetCompileUnitAtIndex(cu_idx); 367 if (dwarf_cu) 368 { 369 GetTypes (dwarf_cu, 370 dwarf_cu->DIE(), 371 0, 372 UINT32_MAX, 373 type_mask, 374 type_set); 375 } 376 } 377 } 378 } 379 // if (m_using_apple_tables) 380 // { 381 // DWARFMappedHash::MemoryTable *apple_types = m_apple_types_ap.get(); 382 // if (apple_types) 383 // { 384 // apple_types->ForEach([this, &type_set, apple_types, type_mask](const DWARFMappedHash::DIEInfoArray &die_info_array) -> bool { 385 // 386 // for (auto die_info: die_info_array) 387 // { 388 // bool add_type = TagMatchesTypeMask (type_mask, 0); 389 // if (!add_type) 390 // { 391 // dw_tag_t tag = die_info.tag; 392 // if (tag == 0) 393 // { 394 // const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtr(die_info.offset, NULL); 395 // tag = die->Tag(); 396 // } 397 // add_type = TagMatchesTypeMask (type_mask, tag); 398 // } 399 // if (add_type) 400 // { 401 // Type *type = ResolveTypeUID(die_info.offset); 402 // 403 // if (type_set.find(type) == type_set.end()) 404 // type_set.insert(type); 405 // } 406 // } 407 // return true; // Keep iterating 408 // }); 409 // } 410 // } 411 // else 412 // { 413 // if (!m_indexed) 414 // Index (); 415 // 416 // m_type_index.ForEach([this, &type_set, type_mask](const char *name, uint32_t die_offset) -> bool { 417 // 418 // bool add_type = TagMatchesTypeMask (type_mask, 0); 419 // 420 // if (!add_type) 421 // { 422 // const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtr(die_offset, NULL); 423 // if (die) 424 // { 425 // const dw_tag_t tag = die->Tag(); 426 // add_type = TagMatchesTypeMask (type_mask, tag); 427 // } 428 // } 429 // 430 // if (add_type) 431 // { 432 // Type *type = ResolveTypeUID(die_offset); 433 // 434 // if (type_set.find(type) == type_set.end()) 435 // type_set.insert(type); 436 // } 437 // return true; // Keep iterating 438 // }); 439 // } 440 441 std::set<ClangASTType> clang_type_set; 442 size_t num_types_added = 0; 443 for (Type *type : type_set) 444 { 445 ClangASTType clang_type = type->GetClangForwardType(); 446 if (clang_type_set.find(clang_type) == clang_type_set.end()) 447 { 448 clang_type_set.insert(clang_type); 449 type_list.Insert (type->shared_from_this()); 450 ++num_types_added; 451 } 452 } 453 return num_types_added; 454 } 455 456 457 //---------------------------------------------------------------------- 458 // Gets the first parent that is a lexical block, function or inlined 459 // subroutine, or compile unit. 460 //---------------------------------------------------------------------- 461 static const DWARFDebugInfoEntry * 462 GetParentSymbolContextDIE(const DWARFDebugInfoEntry *child_die) 463 { 464 const DWARFDebugInfoEntry *die; 465 for (die = child_die->GetParent(); die != NULL; die = die->GetParent()) 466 { 467 dw_tag_t tag = die->Tag(); 468 469 switch (tag) 470 { 471 case DW_TAG_compile_unit: 472 case DW_TAG_subprogram: 473 case DW_TAG_inlined_subroutine: 474 case DW_TAG_lexical_block: 475 return die; 476 } 477 } 478 return NULL; 479 } 480 481 482 SymbolFileDWARF::SymbolFileDWARF(ObjectFile* objfile) : 483 SymbolFile (objfile), 484 UserID (0), // Used by SymbolFileDWARFDebugMap to when this class parses .o files to contain the .o file index/ID 485 m_debug_map_module_wp (), 486 m_debug_map_symfile (NULL), 487 m_clang_tu_decl (NULL), 488 m_flags(), 489 m_data_debug_abbrev (), 490 m_data_debug_aranges (), 491 m_data_debug_frame (), 492 m_data_debug_info (), 493 m_data_debug_line (), 494 m_data_debug_loc (), 495 m_data_debug_ranges (), 496 m_data_debug_str (), 497 m_data_apple_names (), 498 m_data_apple_types (), 499 m_data_apple_namespaces (), 500 m_abbr(), 501 m_info(), 502 m_line(), 503 m_apple_names_ap (), 504 m_apple_types_ap (), 505 m_apple_namespaces_ap (), 506 m_apple_objc_ap (), 507 m_function_basename_index(), 508 m_function_fullname_index(), 509 m_function_method_index(), 510 m_function_selector_index(), 511 m_objc_class_selectors_index(), 512 m_global_index(), 513 m_type_index(), 514 m_namespace_index(), 515 m_indexed (false), 516 m_is_external_ast_source (false), 517 m_using_apple_tables (false), 518 m_supports_DW_AT_APPLE_objc_complete_type (eLazyBoolCalculate), 519 m_ranges(), 520 m_unique_ast_type_map () 521 { 522 } 523 524 SymbolFileDWARF::~SymbolFileDWARF() 525 { 526 if (m_is_external_ast_source) 527 { 528 ModuleSP module_sp (m_obj_file->GetModule()); 529 if (module_sp) 530 module_sp->GetClangASTContext().RemoveExternalSource (); 531 } 532 } 533 534 static const ConstString & 535 GetDWARFMachOSegmentName () 536 { 537 static ConstString g_dwarf_section_name ("__DWARF"); 538 return g_dwarf_section_name; 539 } 540 541 UniqueDWARFASTTypeMap & 542 SymbolFileDWARF::GetUniqueDWARFASTTypeMap () 543 { 544 if (GetDebugMapSymfile ()) 545 return m_debug_map_symfile->GetUniqueDWARFASTTypeMap (); 546 return m_unique_ast_type_map; 547 } 548 549 ClangASTContext & 550 SymbolFileDWARF::GetClangASTContext () 551 { 552 if (GetDebugMapSymfile ()) 553 return m_debug_map_symfile->GetClangASTContext (); 554 555 ClangASTContext &ast = m_obj_file->GetModule()->GetClangASTContext(); 556 if (!m_is_external_ast_source) 557 { 558 m_is_external_ast_source = true; 559 llvm::IntrusiveRefCntPtr<clang::ExternalASTSource> ast_source_ap ( 560 new ClangExternalASTSourceCallbacks (SymbolFileDWARF::CompleteTagDecl, 561 SymbolFileDWARF::CompleteObjCInterfaceDecl, 562 SymbolFileDWARF::FindExternalVisibleDeclsByName, 563 SymbolFileDWARF::LayoutRecordType, 564 this)); 565 ast.SetExternalSource (ast_source_ap); 566 } 567 return ast; 568 } 569 570 void 571 SymbolFileDWARF::InitializeObject() 572 { 573 // Install our external AST source callbacks so we can complete Clang types. 574 ModuleSP module_sp (m_obj_file->GetModule()); 575 if (module_sp) 576 { 577 const SectionList *section_list = module_sp->GetSectionList(); 578 579 const Section* section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get(); 580 581 // Memory map the DWARF mach-o segment so we have everything mmap'ed 582 // to keep our heap memory usage down. 583 if (section) 584 m_obj_file->MemoryMapSectionData(section, m_dwarf_data); 585 } 586 get_apple_names_data(); 587 if (m_data_apple_names.GetByteSize() > 0) 588 { 589 m_apple_names_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_names, get_debug_str_data(), ".apple_names")); 590 if (m_apple_names_ap->IsValid()) 591 m_using_apple_tables = true; 592 else 593 m_apple_names_ap.reset(); 594 } 595 get_apple_types_data(); 596 if (m_data_apple_types.GetByteSize() > 0) 597 { 598 m_apple_types_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_types, get_debug_str_data(), ".apple_types")); 599 if (m_apple_types_ap->IsValid()) 600 m_using_apple_tables = true; 601 else 602 m_apple_types_ap.reset(); 603 } 604 605 get_apple_namespaces_data(); 606 if (m_data_apple_namespaces.GetByteSize() > 0) 607 { 608 m_apple_namespaces_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_namespaces, get_debug_str_data(), ".apple_namespaces")); 609 if (m_apple_namespaces_ap->IsValid()) 610 m_using_apple_tables = true; 611 else 612 m_apple_namespaces_ap.reset(); 613 } 614 615 get_apple_objc_data(); 616 if (m_data_apple_objc.GetByteSize() > 0) 617 { 618 m_apple_objc_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_objc, get_debug_str_data(), ".apple_objc")); 619 if (m_apple_objc_ap->IsValid()) 620 m_using_apple_tables = true; 621 else 622 m_apple_objc_ap.reset(); 623 } 624 } 625 626 bool 627 SymbolFileDWARF::SupportedVersion(uint16_t version) 628 { 629 return version == 2 || version == 3 || version == 4; 630 } 631 632 uint32_t 633 SymbolFileDWARF::CalculateAbilities () 634 { 635 uint32_t abilities = 0; 636 if (m_obj_file != NULL) 637 { 638 const Section* section = NULL; 639 const SectionList *section_list = m_obj_file->GetSectionList(); 640 if (section_list == NULL) 641 return 0; 642 643 uint64_t debug_abbrev_file_size = 0; 644 uint64_t debug_info_file_size = 0; 645 uint64_t debug_line_file_size = 0; 646 647 section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get(); 648 649 if (section) 650 section_list = §ion->GetChildren (); 651 652 section = section_list->FindSectionByType (eSectionTypeDWARFDebugInfo, true).get(); 653 if (section != NULL) 654 { 655 debug_info_file_size = section->GetFileSize(); 656 657 section = section_list->FindSectionByType (eSectionTypeDWARFDebugAbbrev, true).get(); 658 if (section) 659 debug_abbrev_file_size = section->GetFileSize(); 660 else 661 m_flags.Set (flagsGotDebugAbbrevData); 662 663 section = section_list->FindSectionByType (eSectionTypeDWARFDebugAranges, true).get(); 664 if (!section) 665 m_flags.Set (flagsGotDebugArangesData); 666 667 section = section_list->FindSectionByType (eSectionTypeDWARFDebugFrame, true).get(); 668 if (!section) 669 m_flags.Set (flagsGotDebugFrameData); 670 671 section = section_list->FindSectionByType (eSectionTypeDWARFDebugLine, true).get(); 672 if (section) 673 debug_line_file_size = section->GetFileSize(); 674 else 675 m_flags.Set (flagsGotDebugLineData); 676 677 section = section_list->FindSectionByType (eSectionTypeDWARFDebugLoc, true).get(); 678 if (!section) 679 m_flags.Set (flagsGotDebugLocData); 680 681 section = section_list->FindSectionByType (eSectionTypeDWARFDebugMacInfo, true).get(); 682 if (!section) 683 m_flags.Set (flagsGotDebugMacInfoData); 684 685 section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubNames, true).get(); 686 if (!section) 687 m_flags.Set (flagsGotDebugPubNamesData); 688 689 section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubTypes, true).get(); 690 if (!section) 691 m_flags.Set (flagsGotDebugPubTypesData); 692 693 section = section_list->FindSectionByType (eSectionTypeDWARFDebugRanges, true).get(); 694 if (!section) 695 m_flags.Set (flagsGotDebugRangesData); 696 697 section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get(); 698 if (!section) 699 m_flags.Set (flagsGotDebugStrData); 700 } 701 else 702 { 703 const char *symfile_dir_cstr = m_obj_file->GetFileSpec().GetDirectory().GetCString(); 704 if (symfile_dir_cstr) 705 { 706 if (strcasestr(symfile_dir_cstr, ".dsym")) 707 { 708 if (m_obj_file->GetType() == ObjectFile::eTypeDebugInfo) 709 { 710 // We have a dSYM file that didn't have a any debug info. 711 // If the string table has a size of 1, then it was made from 712 // an executable with no debug info, or from an executable that 713 // was stripped. 714 section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get(); 715 if (section && section->GetFileSize() == 1) 716 { 717 m_obj_file->GetModule()->ReportWarning ("empty dSYM file detected, dSYM was created with an executable with no debug info."); 718 } 719 } 720 } 721 } 722 } 723 724 if (debug_abbrev_file_size > 0 && debug_info_file_size > 0) 725 abilities |= CompileUnits | Functions | Blocks | GlobalVariables | LocalVariables | VariableTypes; 726 727 if (debug_line_file_size > 0) 728 abilities |= LineTables; 729 } 730 return abilities; 731 } 732 733 const DWARFDataExtractor& 734 SymbolFileDWARF::GetCachedSectionData (uint32_t got_flag, SectionType sect_type, DWARFDataExtractor &data) 735 { 736 if (m_flags.IsClear (got_flag)) 737 { 738 ModuleSP module_sp (m_obj_file->GetModule()); 739 m_flags.Set (got_flag); 740 const SectionList *section_list = module_sp->GetSectionList(); 741 if (section_list) 742 { 743 SectionSP section_sp (section_list->FindSectionByType(sect_type, true)); 744 if (section_sp) 745 { 746 // See if we memory mapped the DWARF segment? 747 if (m_dwarf_data.GetByteSize()) 748 { 749 data.SetData(m_dwarf_data, section_sp->GetOffset (), section_sp->GetFileSize()); 750 } 751 else 752 { 753 if (m_obj_file->ReadSectionData (section_sp.get(), data) == 0) 754 data.Clear(); 755 } 756 } 757 } 758 } 759 return data; 760 } 761 762 const DWARFDataExtractor& 763 SymbolFileDWARF::get_debug_abbrev_data() 764 { 765 return GetCachedSectionData (flagsGotDebugAbbrevData, eSectionTypeDWARFDebugAbbrev, m_data_debug_abbrev); 766 } 767 768 const DWARFDataExtractor& 769 SymbolFileDWARF::get_debug_aranges_data() 770 { 771 return GetCachedSectionData (flagsGotDebugArangesData, eSectionTypeDWARFDebugAranges, m_data_debug_aranges); 772 } 773 774 const DWARFDataExtractor& 775 SymbolFileDWARF::get_debug_frame_data() 776 { 777 return GetCachedSectionData (flagsGotDebugFrameData, eSectionTypeDWARFDebugFrame, m_data_debug_frame); 778 } 779 780 const DWARFDataExtractor& 781 SymbolFileDWARF::get_debug_info_data() 782 { 783 return GetCachedSectionData (flagsGotDebugInfoData, eSectionTypeDWARFDebugInfo, m_data_debug_info); 784 } 785 786 const DWARFDataExtractor& 787 SymbolFileDWARF::get_debug_line_data() 788 { 789 return GetCachedSectionData (flagsGotDebugLineData, eSectionTypeDWARFDebugLine, m_data_debug_line); 790 } 791 792 const DWARFDataExtractor& 793 SymbolFileDWARF::get_debug_loc_data() 794 { 795 return GetCachedSectionData (flagsGotDebugLocData, eSectionTypeDWARFDebugLoc, m_data_debug_loc); 796 } 797 798 const DWARFDataExtractor& 799 SymbolFileDWARF::get_debug_ranges_data() 800 { 801 return GetCachedSectionData (flagsGotDebugRangesData, eSectionTypeDWARFDebugRanges, m_data_debug_ranges); 802 } 803 804 const DWARFDataExtractor& 805 SymbolFileDWARF::get_debug_str_data() 806 { 807 return GetCachedSectionData (flagsGotDebugStrData, eSectionTypeDWARFDebugStr, m_data_debug_str); 808 } 809 810 const DWARFDataExtractor& 811 SymbolFileDWARF::get_apple_names_data() 812 { 813 return GetCachedSectionData (flagsGotAppleNamesData, eSectionTypeDWARFAppleNames, m_data_apple_names); 814 } 815 816 const DWARFDataExtractor& 817 SymbolFileDWARF::get_apple_types_data() 818 { 819 return GetCachedSectionData (flagsGotAppleTypesData, eSectionTypeDWARFAppleTypes, m_data_apple_types); 820 } 821 822 const DWARFDataExtractor& 823 SymbolFileDWARF::get_apple_namespaces_data() 824 { 825 return GetCachedSectionData (flagsGotAppleNamespacesData, eSectionTypeDWARFAppleNamespaces, m_data_apple_namespaces); 826 } 827 828 const DWARFDataExtractor& 829 SymbolFileDWARF::get_apple_objc_data() 830 { 831 return GetCachedSectionData (flagsGotAppleObjCData, eSectionTypeDWARFAppleObjC, m_data_apple_objc); 832 } 833 834 835 DWARFDebugAbbrev* 836 SymbolFileDWARF::DebugAbbrev() 837 { 838 if (m_abbr.get() == NULL) 839 { 840 const DWARFDataExtractor &debug_abbrev_data = get_debug_abbrev_data(); 841 if (debug_abbrev_data.GetByteSize() > 0) 842 { 843 m_abbr.reset(new DWARFDebugAbbrev()); 844 if (m_abbr.get()) 845 m_abbr->Parse(debug_abbrev_data); 846 } 847 } 848 return m_abbr.get(); 849 } 850 851 const DWARFDebugAbbrev* 852 SymbolFileDWARF::DebugAbbrev() const 853 { 854 return m_abbr.get(); 855 } 856 857 858 DWARFDebugInfo* 859 SymbolFileDWARF::DebugInfo() 860 { 861 if (m_info.get() == NULL) 862 { 863 Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", 864 __PRETTY_FUNCTION__, static_cast<void*>(this)); 865 if (get_debug_info_data().GetByteSize() > 0) 866 { 867 m_info.reset(new DWARFDebugInfo()); 868 if (m_info.get()) 869 { 870 m_info->SetDwarfData(this); 871 } 872 } 873 } 874 return m_info.get(); 875 } 876 877 const DWARFDebugInfo* 878 SymbolFileDWARF::DebugInfo() const 879 { 880 return m_info.get(); 881 } 882 883 DWARFCompileUnit* 884 SymbolFileDWARF::GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit) 885 { 886 DWARFDebugInfo* info = DebugInfo(); 887 if (info) 888 { 889 if (GetDebugMapSymfile ()) 890 { 891 // The debug map symbol file made the compile units for this DWARF 892 // file which is .o file with DWARF in it, and we should have 893 // only 1 compile unit which is at offset zero in the DWARF. 894 // TODO: modify to support LTO .o files where each .o file might 895 // have multiple DW_TAG_compile_unit tags. 896 return info->GetCompileUnit(0).get(); 897 } 898 else 899 { 900 // Just a normal DWARF file whose user ID for the compile unit is 901 // the DWARF offset itself 902 return info->GetCompileUnit((dw_offset_t)comp_unit->GetID()).get(); 903 } 904 } 905 return NULL; 906 } 907 908 909 DWARFDebugRanges* 910 SymbolFileDWARF::DebugRanges() 911 { 912 if (m_ranges.get() == NULL) 913 { 914 Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", 915 __PRETTY_FUNCTION__, static_cast<void*>(this)); 916 if (get_debug_ranges_data().GetByteSize() > 0) 917 { 918 m_ranges.reset(new DWARFDebugRanges()); 919 if (m_ranges.get()) 920 m_ranges->Extract(this); 921 } 922 } 923 return m_ranges.get(); 924 } 925 926 const DWARFDebugRanges* 927 SymbolFileDWARF::DebugRanges() const 928 { 929 return m_ranges.get(); 930 } 931 932 lldb::CompUnitSP 933 SymbolFileDWARF::ParseCompileUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx) 934 { 935 CompUnitSP cu_sp; 936 if (dwarf_cu) 937 { 938 CompileUnit *comp_unit = (CompileUnit*)dwarf_cu->GetUserData(); 939 if (comp_unit) 940 { 941 // We already parsed this compile unit, had out a shared pointer to it 942 cu_sp = comp_unit->shared_from_this(); 943 } 944 else 945 { 946 if (GetDebugMapSymfile ()) 947 { 948 // Let the debug map create the compile unit 949 cu_sp = m_debug_map_symfile->GetCompileUnit(this); 950 dwarf_cu->SetUserData(cu_sp.get()); 951 } 952 else 953 { 954 ModuleSP module_sp (m_obj_file->GetModule()); 955 if (module_sp) 956 { 957 const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly (); 958 if (cu_die) 959 { 960 const char * cu_die_name = cu_die->GetName(this, dwarf_cu); 961 const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL); 962 LanguageType cu_language = (LanguageType)cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0); 963 if (cu_die_name) 964 { 965 std::string ramapped_file; 966 FileSpec cu_file_spec; 967 968 if (cu_die_name[0] == '/' || cu_comp_dir == NULL || cu_comp_dir[0] == '\0') 969 { 970 // If we have a full path to the compile unit, we don't need to resolve 971 // the file. This can be expensive e.g. when the source files are NFS mounted. 972 if (module_sp->RemapSourceFile(cu_die_name, ramapped_file)) 973 cu_file_spec.SetFile (ramapped_file.c_str(), false); 974 else 975 cu_file_spec.SetFile (cu_die_name, false); 976 } 977 else 978 { 979 // DWARF2/3 suggests the form hostname:pathname for compilation directory. 980 // Remove the host part if present. 981 cu_comp_dir = removeHostnameFromPathname(cu_comp_dir); 982 std::string fullpath(cu_comp_dir); 983 984 if (*fullpath.rbegin() != '/') 985 fullpath += '/'; 986 fullpath += cu_die_name; 987 if (module_sp->RemapSourceFile (fullpath.c_str(), ramapped_file)) 988 cu_file_spec.SetFile (ramapped_file.c_str(), false); 989 else 990 cu_file_spec.SetFile (fullpath.c_str(), false); 991 } 992 993 cu_sp.reset(new CompileUnit (module_sp, 994 dwarf_cu, 995 cu_file_spec, 996 MakeUserID(dwarf_cu->GetOffset()), 997 cu_language)); 998 if (cu_sp) 999 { 1000 dwarf_cu->SetUserData(cu_sp.get()); 1001 1002 // Figure out the compile unit index if we weren't given one 1003 if (cu_idx == UINT32_MAX) 1004 DebugInfo()->GetCompileUnit(dwarf_cu->GetOffset(), &cu_idx); 1005 1006 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp); 1007 } 1008 } 1009 } 1010 } 1011 } 1012 } 1013 } 1014 return cu_sp; 1015 } 1016 1017 uint32_t 1018 SymbolFileDWARF::GetNumCompileUnits() 1019 { 1020 DWARFDebugInfo* info = DebugInfo(); 1021 if (info) 1022 return info->GetNumCompileUnits(); 1023 return 0; 1024 } 1025 1026 CompUnitSP 1027 SymbolFileDWARF::ParseCompileUnitAtIndex(uint32_t cu_idx) 1028 { 1029 CompUnitSP cu_sp; 1030 DWARFDebugInfo* info = DebugInfo(); 1031 if (info) 1032 { 1033 DWARFCompileUnit* dwarf_cu = info->GetCompileUnitAtIndex(cu_idx); 1034 if (dwarf_cu) 1035 cu_sp = ParseCompileUnit(dwarf_cu, cu_idx); 1036 } 1037 return cu_sp; 1038 } 1039 1040 static void 1041 AddRangesToBlock (Block& block, 1042 DWARFDebugRanges::RangeList& ranges, 1043 addr_t block_base_addr) 1044 { 1045 const size_t num_ranges = ranges.GetSize(); 1046 for (size_t i = 0; i<num_ranges; ++i) 1047 { 1048 const DWARFDebugRanges::Range &range = ranges.GetEntryRef (i); 1049 const addr_t range_base = range.GetRangeBase(); 1050 assert (range_base >= block_base_addr); 1051 block.AddRange(Block::Range (range_base - block_base_addr, range.GetByteSize()));; 1052 } 1053 block.FinalizeRanges (); 1054 } 1055 1056 1057 Function * 1058 SymbolFileDWARF::ParseCompileUnitFunction (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die) 1059 { 1060 DWARFDebugRanges::RangeList func_ranges; 1061 const char *name = NULL; 1062 const char *mangled = NULL; 1063 int decl_file = 0; 1064 int decl_line = 0; 1065 int decl_column = 0; 1066 int call_file = 0; 1067 int call_line = 0; 1068 int call_column = 0; 1069 DWARFExpression frame_base; 1070 1071 assert (die->Tag() == DW_TAG_subprogram); 1072 1073 if (die->Tag() != DW_TAG_subprogram) 1074 return NULL; 1075 1076 if (die->GetDIENamesAndRanges (this, 1077 dwarf_cu, 1078 name, 1079 mangled, 1080 func_ranges, 1081 decl_file, 1082 decl_line, 1083 decl_column, 1084 call_file, 1085 call_line, 1086 call_column, 1087 &frame_base)) 1088 { 1089 // Union of all ranges in the function DIE (if the function is discontiguous) 1090 AddressRange func_range; 1091 lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase (0); 1092 lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd (0); 1093 if (lowest_func_addr != LLDB_INVALID_ADDRESS && lowest_func_addr <= highest_func_addr) 1094 { 1095 ModuleSP module_sp (m_obj_file->GetModule()); 1096 func_range.GetBaseAddress().ResolveAddressUsingFileSections (lowest_func_addr, module_sp->GetSectionList()); 1097 if (func_range.GetBaseAddress().IsValid()) 1098 func_range.SetByteSize(highest_func_addr - lowest_func_addr); 1099 } 1100 1101 if (func_range.GetBaseAddress().IsValid()) 1102 { 1103 Mangled func_name; 1104 if (mangled) 1105 func_name.SetValue(ConstString(mangled), true); 1106 else if (name) 1107 func_name.SetValue(ConstString(name), false); 1108 1109 FunctionSP func_sp; 1110 std::unique_ptr<Declaration> decl_ap; 1111 if (decl_file != 0 || decl_line != 0 || decl_column != 0) 1112 decl_ap.reset(new Declaration (sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), 1113 decl_line, 1114 decl_column)); 1115 1116 // Supply the type _only_ if it has already been parsed 1117 Type *func_type = m_die_to_type.lookup (die); 1118 1119 assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED); 1120 1121 if (FixupAddress (func_range.GetBaseAddress())) 1122 { 1123 const user_id_t func_user_id = MakeUserID(die->GetOffset()); 1124 func_sp.reset(new Function (sc.comp_unit, 1125 MakeUserID(func_user_id), // UserID is the DIE offset 1126 MakeUserID(func_user_id), 1127 func_name, 1128 func_type, 1129 func_range)); // first address range 1130 1131 if (func_sp.get() != NULL) 1132 { 1133 if (frame_base.IsValid()) 1134 func_sp->GetFrameBaseExpression() = frame_base; 1135 sc.comp_unit->AddFunction(func_sp); 1136 return func_sp.get(); 1137 } 1138 } 1139 } 1140 } 1141 return NULL; 1142 } 1143 1144 bool 1145 SymbolFileDWARF::FixupAddress (Address &addr) 1146 { 1147 SymbolFileDWARFDebugMap * debug_map_symfile = GetDebugMapSymfile (); 1148 if (debug_map_symfile) 1149 { 1150 return debug_map_symfile->LinkOSOAddress(addr); 1151 } 1152 // This is a normal DWARF file, no address fixups need to happen 1153 return true; 1154 } 1155 lldb::LanguageType 1156 SymbolFileDWARF::ParseCompileUnitLanguage (const SymbolContext& sc) 1157 { 1158 assert (sc.comp_unit); 1159 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 1160 if (dwarf_cu) 1161 { 1162 const DWARFDebugInfoEntry *die = dwarf_cu->GetCompileUnitDIEOnly(); 1163 if (die) 1164 { 1165 const uint32_t language = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0); 1166 if (language) 1167 return (lldb::LanguageType)language; 1168 } 1169 } 1170 return eLanguageTypeUnknown; 1171 } 1172 1173 size_t 1174 SymbolFileDWARF::ParseCompileUnitFunctions(const SymbolContext &sc) 1175 { 1176 assert (sc.comp_unit); 1177 size_t functions_added = 0; 1178 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 1179 if (dwarf_cu) 1180 { 1181 DWARFDIECollection function_dies; 1182 const size_t num_functions = dwarf_cu->AppendDIEsWithTag (DW_TAG_subprogram, function_dies); 1183 size_t func_idx; 1184 for (func_idx = 0; func_idx < num_functions; ++func_idx) 1185 { 1186 const DWARFDebugInfoEntry *die = function_dies.GetDIEPtrAtIndex(func_idx); 1187 if (sc.comp_unit->FindFunctionByUID (MakeUserID(die->GetOffset())).get() == NULL) 1188 { 1189 if (ParseCompileUnitFunction(sc, dwarf_cu, die)) 1190 ++functions_added; 1191 } 1192 } 1193 //FixupTypes(); 1194 } 1195 return functions_added; 1196 } 1197 1198 bool 1199 SymbolFileDWARF::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList& support_files) 1200 { 1201 assert (sc.comp_unit); 1202 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 1203 if (dwarf_cu) 1204 { 1205 const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly(); 1206 1207 if (cu_die) 1208 { 1209 const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL); 1210 1211 // DWARF2/3 suggests the form hostname:pathname for compilation directory. 1212 // Remove the host part if present. 1213 cu_comp_dir = removeHostnameFromPathname(cu_comp_dir); 1214 1215 dw_offset_t stmt_list = cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET); 1216 1217 // All file indexes in DWARF are one based and a file of index zero is 1218 // supposed to be the compile unit itself. 1219 support_files.Append (*sc.comp_unit); 1220 1221 return DWARFDebugLine::ParseSupportFiles(sc.comp_unit->GetModule(), get_debug_line_data(), cu_comp_dir, stmt_list, support_files); 1222 } 1223 } 1224 return false; 1225 } 1226 1227 struct ParseDWARFLineTableCallbackInfo 1228 { 1229 LineTable* line_table; 1230 std::unique_ptr<LineSequence> sequence_ap; 1231 }; 1232 1233 //---------------------------------------------------------------------- 1234 // ParseStatementTableCallback 1235 //---------------------------------------------------------------------- 1236 static void 1237 ParseDWARFLineTableCallback(dw_offset_t offset, const DWARFDebugLine::State& state, void* userData) 1238 { 1239 if (state.row == DWARFDebugLine::State::StartParsingLineTable) 1240 { 1241 // Just started parsing the line table 1242 } 1243 else if (state.row == DWARFDebugLine::State::DoneParsingLineTable) 1244 { 1245 // Done parsing line table, nothing to do for the cleanup 1246 } 1247 else 1248 { 1249 ParseDWARFLineTableCallbackInfo* info = (ParseDWARFLineTableCallbackInfo*)userData; 1250 LineTable* line_table = info->line_table; 1251 1252 // If this is our first time here, we need to create a 1253 // sequence container. 1254 if (!info->sequence_ap.get()) 1255 { 1256 info->sequence_ap.reset(line_table->CreateLineSequenceContainer()); 1257 assert(info->sequence_ap.get()); 1258 } 1259 line_table->AppendLineEntryToSequence (info->sequence_ap.get(), 1260 state.address, 1261 state.line, 1262 state.column, 1263 state.file, 1264 state.is_stmt, 1265 state.basic_block, 1266 state.prologue_end, 1267 state.epilogue_begin, 1268 state.end_sequence); 1269 if (state.end_sequence) 1270 { 1271 // First, put the current sequence into the line table. 1272 line_table->InsertSequence(info->sequence_ap.get()); 1273 // Then, empty it to prepare for the next sequence. 1274 info->sequence_ap->Clear(); 1275 } 1276 } 1277 } 1278 1279 bool 1280 SymbolFileDWARF::ParseCompileUnitLineTable (const SymbolContext &sc) 1281 { 1282 assert (sc.comp_unit); 1283 if (sc.comp_unit->GetLineTable() != NULL) 1284 return true; 1285 1286 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 1287 if (dwarf_cu) 1288 { 1289 const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->GetCompileUnitDIEOnly(); 1290 if (dwarf_cu_die) 1291 { 1292 const dw_offset_t cu_line_offset = dwarf_cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET); 1293 if (cu_line_offset != DW_INVALID_OFFSET) 1294 { 1295 std::unique_ptr<LineTable> line_table_ap(new LineTable(sc.comp_unit)); 1296 if (line_table_ap.get()) 1297 { 1298 ParseDWARFLineTableCallbackInfo info; 1299 info.line_table = line_table_ap.get(); 1300 lldb::offset_t offset = cu_line_offset; 1301 DWARFDebugLine::ParseStatementTable(get_debug_line_data(), &offset, ParseDWARFLineTableCallback, &info); 1302 if (m_debug_map_symfile) 1303 { 1304 // We have an object file that has a line table with addresses 1305 // that are not linked. We need to link the line table and convert 1306 // the addresses that are relative to the .o file into addresses 1307 // for the main executable. 1308 sc.comp_unit->SetLineTable (m_debug_map_symfile->LinkOSOLineTable (this, line_table_ap.get())); 1309 } 1310 else 1311 { 1312 sc.comp_unit->SetLineTable(line_table_ap.release()); 1313 return true; 1314 } 1315 } 1316 } 1317 } 1318 } 1319 return false; 1320 } 1321 1322 size_t 1323 SymbolFileDWARF::ParseFunctionBlocks 1324 ( 1325 const SymbolContext& sc, 1326 Block *parent_block, 1327 DWARFCompileUnit* dwarf_cu, 1328 const DWARFDebugInfoEntry *die, 1329 addr_t subprogram_low_pc, 1330 uint32_t depth 1331 ) 1332 { 1333 size_t blocks_added = 0; 1334 while (die != NULL) 1335 { 1336 dw_tag_t tag = die->Tag(); 1337 1338 switch (tag) 1339 { 1340 case DW_TAG_inlined_subroutine: 1341 case DW_TAG_subprogram: 1342 case DW_TAG_lexical_block: 1343 { 1344 Block *block = NULL; 1345 if (tag == DW_TAG_subprogram) 1346 { 1347 // Skip any DW_TAG_subprogram DIEs that are inside 1348 // of a normal or inlined functions. These will be 1349 // parsed on their own as separate entities. 1350 1351 if (depth > 0) 1352 break; 1353 1354 block = parent_block; 1355 } 1356 else 1357 { 1358 BlockSP block_sp(new Block (MakeUserID(die->GetOffset()))); 1359 parent_block->AddChild(block_sp); 1360 block = block_sp.get(); 1361 } 1362 DWARFDebugRanges::RangeList ranges; 1363 const char *name = NULL; 1364 const char *mangled_name = NULL; 1365 1366 int decl_file = 0; 1367 int decl_line = 0; 1368 int decl_column = 0; 1369 int call_file = 0; 1370 int call_line = 0; 1371 int call_column = 0; 1372 if (die->GetDIENamesAndRanges (this, 1373 dwarf_cu, 1374 name, 1375 mangled_name, 1376 ranges, 1377 decl_file, decl_line, decl_column, 1378 call_file, call_line, call_column)) 1379 { 1380 if (tag == DW_TAG_subprogram) 1381 { 1382 assert (subprogram_low_pc == LLDB_INVALID_ADDRESS); 1383 subprogram_low_pc = ranges.GetMinRangeBase(0); 1384 } 1385 else if (tag == DW_TAG_inlined_subroutine) 1386 { 1387 // We get called here for inlined subroutines in two ways. 1388 // The first time is when we are making the Function object 1389 // for this inlined concrete instance. Since we're creating a top level block at 1390 // here, the subprogram_low_pc will be LLDB_INVALID_ADDRESS. So we need to 1391 // adjust the containing address. 1392 // The second time is when we are parsing the blocks inside the function that contains 1393 // the inlined concrete instance. Since these will be blocks inside the containing "real" 1394 // function the offset will be for that function. 1395 if (subprogram_low_pc == LLDB_INVALID_ADDRESS) 1396 { 1397 subprogram_low_pc = ranges.GetMinRangeBase(0); 1398 } 1399 } 1400 1401 AddRangesToBlock (*block, ranges, subprogram_low_pc); 1402 1403 if (tag != DW_TAG_subprogram && (name != NULL || mangled_name != NULL)) 1404 { 1405 std::unique_ptr<Declaration> decl_ap; 1406 if (decl_file != 0 || decl_line != 0 || decl_column != 0) 1407 decl_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), 1408 decl_line, decl_column)); 1409 1410 std::unique_ptr<Declaration> call_ap; 1411 if (call_file != 0 || call_line != 0 || call_column != 0) 1412 call_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(call_file), 1413 call_line, call_column)); 1414 1415 block->SetInlinedFunctionInfo (name, mangled_name, decl_ap.get(), call_ap.get()); 1416 } 1417 1418 ++blocks_added; 1419 1420 if (die->HasChildren()) 1421 { 1422 blocks_added += ParseFunctionBlocks (sc, 1423 block, 1424 dwarf_cu, 1425 die->GetFirstChild(), 1426 subprogram_low_pc, 1427 depth + 1); 1428 } 1429 } 1430 } 1431 break; 1432 default: 1433 break; 1434 } 1435 1436 // Only parse siblings of the block if we are not at depth zero. A depth 1437 // of zero indicates we are currently parsing the top level 1438 // DW_TAG_subprogram DIE 1439 1440 if (depth == 0) 1441 die = NULL; 1442 else 1443 die = die->GetSibling(); 1444 } 1445 return blocks_added; 1446 } 1447 1448 bool 1449 SymbolFileDWARF::ParseTemplateDIE (DWARFCompileUnit* dwarf_cu, 1450 const DWARFDebugInfoEntry *die, 1451 ClangASTContext::TemplateParameterInfos &template_param_infos) 1452 { 1453 const dw_tag_t tag = die->Tag(); 1454 1455 switch (tag) 1456 { 1457 case DW_TAG_template_type_parameter: 1458 case DW_TAG_template_value_parameter: 1459 { 1460 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64()); 1461 1462 DWARFDebugInfoEntry::Attributes attributes; 1463 const size_t num_attributes = die->GetAttributes (this, 1464 dwarf_cu, 1465 fixed_form_sizes, 1466 attributes); 1467 const char *name = NULL; 1468 Type *lldb_type = NULL; 1469 ClangASTType clang_type; 1470 uint64_t uval64 = 0; 1471 bool uval64_valid = false; 1472 if (num_attributes > 0) 1473 { 1474 DWARFFormValue form_value; 1475 for (size_t i=0; i<num_attributes; ++i) 1476 { 1477 const dw_attr_t attr = attributes.AttributeAtIndex(i); 1478 1479 switch (attr) 1480 { 1481 case DW_AT_name: 1482 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1483 name = form_value.AsCString(&get_debug_str_data()); 1484 break; 1485 1486 case DW_AT_type: 1487 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1488 { 1489 const dw_offset_t type_die_offset = form_value.Reference(); 1490 lldb_type = ResolveTypeUID(type_die_offset); 1491 if (lldb_type) 1492 clang_type = lldb_type->GetClangForwardType(); 1493 } 1494 break; 1495 1496 case DW_AT_const_value: 1497 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1498 { 1499 uval64_valid = true; 1500 uval64 = form_value.Unsigned(); 1501 } 1502 break; 1503 default: 1504 break; 1505 } 1506 } 1507 1508 clang::ASTContext *ast = GetClangASTContext().getASTContext(); 1509 if (!clang_type) 1510 clang_type = GetClangASTContext().GetBasicType(eBasicTypeVoid); 1511 1512 if (clang_type) 1513 { 1514 bool is_signed = false; 1515 if (name && name[0]) 1516 template_param_infos.names.push_back(name); 1517 else 1518 template_param_infos.names.push_back(NULL); 1519 1520 if (tag == DW_TAG_template_value_parameter && 1521 lldb_type != NULL && 1522 clang_type.IsIntegerType (is_signed) && 1523 uval64_valid) 1524 { 1525 llvm::APInt apint (lldb_type->GetByteSize() * 8, uval64, is_signed); 1526 template_param_infos.args.push_back (clang::TemplateArgument (*ast, 1527 llvm::APSInt(apint), 1528 clang_type.GetQualType())); 1529 } 1530 else 1531 { 1532 template_param_infos.args.push_back (clang::TemplateArgument (clang_type.GetQualType())); 1533 } 1534 } 1535 else 1536 { 1537 return false; 1538 } 1539 1540 } 1541 } 1542 return true; 1543 1544 default: 1545 break; 1546 } 1547 return false; 1548 } 1549 1550 bool 1551 SymbolFileDWARF::ParseTemplateParameterInfos (DWARFCompileUnit* dwarf_cu, 1552 const DWARFDebugInfoEntry *parent_die, 1553 ClangASTContext::TemplateParameterInfos &template_param_infos) 1554 { 1555 1556 if (parent_die == NULL) 1557 return false; 1558 1559 Args template_parameter_names; 1560 for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild(); 1561 die != NULL; 1562 die = die->GetSibling()) 1563 { 1564 const dw_tag_t tag = die->Tag(); 1565 1566 switch (tag) 1567 { 1568 case DW_TAG_template_type_parameter: 1569 case DW_TAG_template_value_parameter: 1570 ParseTemplateDIE (dwarf_cu, die, template_param_infos); 1571 break; 1572 1573 default: 1574 break; 1575 } 1576 } 1577 if (template_param_infos.args.empty()) 1578 return false; 1579 return template_param_infos.args.size() == template_param_infos.names.size(); 1580 } 1581 1582 clang::ClassTemplateDecl * 1583 SymbolFileDWARF::ParseClassTemplateDecl (clang::DeclContext *decl_ctx, 1584 lldb::AccessType access_type, 1585 const char *parent_name, 1586 int tag_decl_kind, 1587 const ClangASTContext::TemplateParameterInfos &template_param_infos) 1588 { 1589 if (template_param_infos.IsValid()) 1590 { 1591 std::string template_basename(parent_name); 1592 template_basename.erase (template_basename.find('<')); 1593 ClangASTContext &ast = GetClangASTContext(); 1594 1595 return ast.CreateClassTemplateDecl (decl_ctx, 1596 access_type, 1597 template_basename.c_str(), 1598 tag_decl_kind, 1599 template_param_infos); 1600 } 1601 return NULL; 1602 } 1603 1604 class SymbolFileDWARF::DelayedAddObjCClassProperty 1605 { 1606 public: 1607 DelayedAddObjCClassProperty 1608 ( 1609 const ClangASTType &class_opaque_type, 1610 const char *property_name, 1611 const ClangASTType &property_opaque_type, // The property type is only required if you don't have an ivar decl 1612 clang::ObjCIvarDecl *ivar_decl, 1613 const char *property_setter_name, 1614 const char *property_getter_name, 1615 uint32_t property_attributes, 1616 const ClangASTMetadata *metadata 1617 ) : 1618 m_class_opaque_type (class_opaque_type), 1619 m_property_name (property_name), 1620 m_property_opaque_type (property_opaque_type), 1621 m_ivar_decl (ivar_decl), 1622 m_property_setter_name (property_setter_name), 1623 m_property_getter_name (property_getter_name), 1624 m_property_attributes (property_attributes) 1625 { 1626 if (metadata != NULL) 1627 { 1628 m_metadata_ap.reset(new ClangASTMetadata()); 1629 *m_metadata_ap = *metadata; 1630 } 1631 } 1632 1633 DelayedAddObjCClassProperty (const DelayedAddObjCClassProperty &rhs) 1634 { 1635 *this = rhs; 1636 } 1637 1638 DelayedAddObjCClassProperty& operator= (const DelayedAddObjCClassProperty &rhs) 1639 { 1640 m_class_opaque_type = rhs.m_class_opaque_type; 1641 m_property_name = rhs.m_property_name; 1642 m_property_opaque_type = rhs.m_property_opaque_type; 1643 m_ivar_decl = rhs.m_ivar_decl; 1644 m_property_setter_name = rhs.m_property_setter_name; 1645 m_property_getter_name = rhs.m_property_getter_name; 1646 m_property_attributes = rhs.m_property_attributes; 1647 1648 if (rhs.m_metadata_ap.get()) 1649 { 1650 m_metadata_ap.reset (new ClangASTMetadata()); 1651 *m_metadata_ap = *rhs.m_metadata_ap; 1652 } 1653 return *this; 1654 } 1655 1656 bool 1657 Finalize() 1658 { 1659 return m_class_opaque_type.AddObjCClassProperty (m_property_name, 1660 m_property_opaque_type, 1661 m_ivar_decl, 1662 m_property_setter_name, 1663 m_property_getter_name, 1664 m_property_attributes, 1665 m_metadata_ap.get()); 1666 } 1667 private: 1668 ClangASTType m_class_opaque_type; 1669 const char *m_property_name; 1670 ClangASTType m_property_opaque_type; 1671 clang::ObjCIvarDecl *m_ivar_decl; 1672 const char *m_property_setter_name; 1673 const char *m_property_getter_name; 1674 uint32_t m_property_attributes; 1675 std::unique_ptr<ClangASTMetadata> m_metadata_ap; 1676 }; 1677 1678 struct BitfieldInfo 1679 { 1680 uint64_t bit_size; 1681 uint64_t bit_offset; 1682 1683 BitfieldInfo () : 1684 bit_size (LLDB_INVALID_ADDRESS), 1685 bit_offset (LLDB_INVALID_ADDRESS) 1686 { 1687 } 1688 1689 void 1690 Clear() 1691 { 1692 bit_size = LLDB_INVALID_ADDRESS; 1693 bit_offset = LLDB_INVALID_ADDRESS; 1694 } 1695 1696 bool IsValid () 1697 { 1698 return (bit_size != LLDB_INVALID_ADDRESS) && 1699 (bit_offset != LLDB_INVALID_ADDRESS); 1700 } 1701 }; 1702 1703 1704 bool 1705 SymbolFileDWARF::ClassOrStructIsVirtual (DWARFCompileUnit* dwarf_cu, 1706 const DWARFDebugInfoEntry *parent_die) 1707 { 1708 if (parent_die) 1709 { 1710 for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 1711 { 1712 dw_tag_t tag = die->Tag(); 1713 bool check_virtuality = false; 1714 switch (tag) 1715 { 1716 case DW_TAG_inheritance: 1717 case DW_TAG_subprogram: 1718 check_virtuality = true; 1719 break; 1720 default: 1721 break; 1722 } 1723 if (check_virtuality) 1724 { 1725 if (die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_virtuality, 0) != 0) 1726 return true; 1727 } 1728 } 1729 } 1730 return false; 1731 } 1732 1733 size_t 1734 SymbolFileDWARF::ParseChildMembers 1735 ( 1736 const SymbolContext& sc, 1737 DWARFCompileUnit* dwarf_cu, 1738 const DWARFDebugInfoEntry *parent_die, 1739 ClangASTType &class_clang_type, 1740 const LanguageType class_language, 1741 std::vector<clang::CXXBaseSpecifier *>& base_classes, 1742 std::vector<int>& member_accessibilities, 1743 DWARFDIECollection& member_function_dies, 1744 DelayedPropertyList& delayed_properties, 1745 AccessType& default_accessibility, 1746 bool &is_a_class, 1747 LayoutInfo &layout_info 1748 ) 1749 { 1750 if (parent_die == NULL) 1751 return 0; 1752 1753 size_t count = 0; 1754 const DWARFDebugInfoEntry *die; 1755 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64()); 1756 uint32_t member_idx = 0; 1757 BitfieldInfo last_field_info; 1758 ModuleSP module = GetObjectFile()->GetModule(); 1759 1760 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 1761 { 1762 dw_tag_t tag = die->Tag(); 1763 1764 switch (tag) 1765 { 1766 case DW_TAG_member: 1767 case DW_TAG_APPLE_property: 1768 { 1769 DWARFDebugInfoEntry::Attributes attributes; 1770 const size_t num_attributes = die->GetAttributes (this, 1771 dwarf_cu, 1772 fixed_form_sizes, 1773 attributes); 1774 if (num_attributes > 0) 1775 { 1776 Declaration decl; 1777 //DWARFExpression location; 1778 const char *name = NULL; 1779 const char *prop_name = NULL; 1780 const char *prop_getter_name = NULL; 1781 const char *prop_setter_name = NULL; 1782 uint32_t prop_attributes = 0; 1783 1784 1785 bool is_artificial = false; 1786 lldb::user_id_t encoding_uid = LLDB_INVALID_UID; 1787 AccessType accessibility = eAccessNone; 1788 uint32_t member_byte_offset = UINT32_MAX; 1789 size_t byte_size = 0; 1790 size_t bit_offset = 0; 1791 size_t bit_size = 0; 1792 bool is_external = false; // On DW_TAG_members, this means the member is static 1793 uint32_t i; 1794 for (i=0; i<num_attributes && !is_artificial; ++i) 1795 { 1796 const dw_attr_t attr = attributes.AttributeAtIndex(i); 1797 DWARFFormValue form_value; 1798 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1799 { 1800 switch (attr) 1801 { 1802 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 1803 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 1804 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 1805 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; 1806 case DW_AT_type: encoding_uid = form_value.Reference(); break; 1807 case DW_AT_bit_offset: bit_offset = form_value.Unsigned(); break; 1808 case DW_AT_bit_size: bit_size = form_value.Unsigned(); break; 1809 case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; 1810 case DW_AT_data_member_location: 1811 if (form_value.BlockData()) 1812 { 1813 Value initialValue(0); 1814 Value memberOffset(0); 1815 const DWARFDataExtractor& debug_info_data = get_debug_info_data(); 1816 uint32_t block_length = form_value.Unsigned(); 1817 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 1818 if (DWARFExpression::Evaluate(NULL, // ExecutionContext * 1819 NULL, // ClangExpressionVariableList * 1820 NULL, // ClangExpressionDeclMap * 1821 NULL, // RegisterContext * 1822 module, 1823 debug_info_data, 1824 block_offset, 1825 block_length, 1826 eRegisterKindDWARF, 1827 &initialValue, 1828 memberOffset, 1829 NULL)) 1830 { 1831 member_byte_offset = memberOffset.ResolveValue(NULL).UInt(); 1832 } 1833 } 1834 else 1835 { 1836 // With DWARF 3 and later, if the value is an integer constant, 1837 // this form value is the offset in bytes from the beginning 1838 // of the containing entity. 1839 member_byte_offset = form_value.Unsigned(); 1840 } 1841 break; 1842 1843 case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType (form_value.Unsigned()); break; 1844 case DW_AT_artificial: is_artificial = form_value.Boolean(); break; 1845 case DW_AT_APPLE_property_name: prop_name = form_value.AsCString(&get_debug_str_data()); break; 1846 case DW_AT_APPLE_property_getter: prop_getter_name = form_value.AsCString(&get_debug_str_data()); break; 1847 case DW_AT_APPLE_property_setter: prop_setter_name = form_value.AsCString(&get_debug_str_data()); break; 1848 case DW_AT_APPLE_property_attribute: prop_attributes = form_value.Unsigned(); break; 1849 case DW_AT_external: is_external = form_value.Boolean(); break; 1850 1851 default: 1852 case DW_AT_declaration: 1853 case DW_AT_description: 1854 case DW_AT_mutable: 1855 case DW_AT_visibility: 1856 case DW_AT_sibling: 1857 break; 1858 } 1859 } 1860 } 1861 1862 if (prop_name) 1863 { 1864 ConstString fixed_getter; 1865 ConstString fixed_setter; 1866 1867 // Check if the property getter/setter were provided as full 1868 // names. We want basenames, so we extract them. 1869 1870 if (prop_getter_name && prop_getter_name[0] == '-') 1871 { 1872 ObjCLanguageRuntime::MethodName prop_getter_method(prop_getter_name, true); 1873 prop_getter_name = prop_getter_method.GetSelector().GetCString(); 1874 } 1875 1876 if (prop_setter_name && prop_setter_name[0] == '-') 1877 { 1878 ObjCLanguageRuntime::MethodName prop_setter_method(prop_setter_name, true); 1879 prop_setter_name = prop_setter_method.GetSelector().GetCString(); 1880 } 1881 1882 // If the names haven't been provided, they need to be 1883 // filled in. 1884 1885 if (!prop_getter_name) 1886 { 1887 prop_getter_name = prop_name; 1888 } 1889 if (!prop_setter_name && prop_name[0] && !(prop_attributes & DW_APPLE_PROPERTY_readonly)) 1890 { 1891 StreamString ss; 1892 1893 ss.Printf("set%c%s:", 1894 toupper(prop_name[0]), 1895 &prop_name[1]); 1896 1897 fixed_setter.SetCString(ss.GetData()); 1898 prop_setter_name = fixed_setter.GetCString(); 1899 } 1900 } 1901 1902 // Clang has a DWARF generation bug where sometimes it 1903 // represents fields that are references with bad byte size 1904 // and bit size/offset information such as: 1905 // 1906 // DW_AT_byte_size( 0x00 ) 1907 // DW_AT_bit_size( 0x40 ) 1908 // DW_AT_bit_offset( 0xffffffffffffffc0 ) 1909 // 1910 // So check the bit offset to make sure it is sane, and if 1911 // the values are not sane, remove them. If we don't do this 1912 // then we will end up with a crash if we try to use this 1913 // type in an expression when clang becomes unhappy with its 1914 // recycled debug info. 1915 1916 if (bit_offset > 128) 1917 { 1918 bit_size = 0; 1919 bit_offset = 0; 1920 } 1921 1922 // FIXME: Make Clang ignore Objective-C accessibility for expressions 1923 if (class_language == eLanguageTypeObjC || 1924 class_language == eLanguageTypeObjC_plus_plus) 1925 accessibility = eAccessNone; 1926 1927 if (member_idx == 0 && !is_artificial && name && (strstr (name, "_vptr$") == name)) 1928 { 1929 // Not all compilers will mark the vtable pointer 1930 // member as artificial (llvm-gcc). We can't have 1931 // the virtual members in our classes otherwise it 1932 // throws off all child offsets since we end up 1933 // having and extra pointer sized member in our 1934 // class layouts. 1935 is_artificial = true; 1936 } 1937 1938 // Handle static members 1939 if (is_external && member_byte_offset == UINT32_MAX) 1940 { 1941 Type *var_type = ResolveTypeUID(encoding_uid); 1942 1943 if (var_type) 1944 { 1945 if (accessibility == eAccessNone) 1946 accessibility = eAccessPublic; 1947 class_clang_type.AddVariableToRecordType (name, 1948 var_type->GetClangLayoutType(), 1949 accessibility); 1950 } 1951 break; 1952 } 1953 1954 if (is_artificial == false) 1955 { 1956 Type *member_type = ResolveTypeUID(encoding_uid); 1957 1958 clang::FieldDecl *field_decl = NULL; 1959 if (tag == DW_TAG_member) 1960 { 1961 if (member_type) 1962 { 1963 if (accessibility == eAccessNone) 1964 accessibility = default_accessibility; 1965 member_accessibilities.push_back(accessibility); 1966 1967 uint64_t field_bit_offset = (member_byte_offset == UINT32_MAX ? 0 : (member_byte_offset * 8)); 1968 if (bit_size > 0) 1969 { 1970 1971 BitfieldInfo this_field_info; 1972 this_field_info.bit_offset = field_bit_offset; 1973 this_field_info.bit_size = bit_size; 1974 1975 ///////////////////////////////////////////////////////////// 1976 // How to locate a field given the DWARF debug information 1977 // 1978 // AT_byte_size indicates the size of the word in which the 1979 // bit offset must be interpreted. 1980 // 1981 // AT_data_member_location indicates the byte offset of the 1982 // word from the base address of the structure. 1983 // 1984 // AT_bit_offset indicates how many bits into the word 1985 // (according to the host endianness) the low-order bit of 1986 // the field starts. AT_bit_offset can be negative. 1987 // 1988 // AT_bit_size indicates the size of the field in bits. 1989 ///////////////////////////////////////////////////////////// 1990 1991 if (byte_size == 0) 1992 byte_size = member_type->GetByteSize(); 1993 1994 if (GetObjectFile()->GetByteOrder() == eByteOrderLittle) 1995 { 1996 this_field_info.bit_offset += byte_size * 8; 1997 this_field_info.bit_offset -= (bit_offset + bit_size); 1998 } 1999 else 2000 { 2001 this_field_info.bit_offset += bit_offset; 2002 } 2003 2004 // Update the field bit offset we will report for layout 2005 field_bit_offset = this_field_info.bit_offset; 2006 2007 // If the member to be emitted did not start on a character boundary and there is 2008 // empty space between the last field and this one, then we need to emit an 2009 // anonymous member filling up the space up to its start. There are three cases 2010 // here: 2011 // 2012 // 1 If the previous member ended on a character boundary, then we can emit an 2013 // anonymous member starting at the most recent character boundary. 2014 // 2015 // 2 If the previous member did not end on a character boundary and the distance 2016 // from the end of the previous member to the current member is less than a 2017 // word width, then we can emit an anonymous member starting right after the 2018 // previous member and right before this member. 2019 // 2020 // 3 If the previous member did not end on a character boundary and the distance 2021 // from the end of the previous member to the current member is greater than 2022 // or equal a word width, then we act as in Case 1. 2023 2024 const uint64_t character_width = 8; 2025 const uint64_t word_width = 32; 2026 2027 // Objective-C has invalid DW_AT_bit_offset values in older versions 2028 // of clang, so we have to be careful and only insert unnamed bitfields 2029 // if we have a new enough clang. 2030 bool detect_unnamed_bitfields = true; 2031 2032 if (class_language == eLanguageTypeObjC || class_language == eLanguageTypeObjC_plus_plus) 2033 detect_unnamed_bitfields = dwarf_cu->Supports_unnamed_objc_bitfields (); 2034 2035 if (detect_unnamed_bitfields) 2036 { 2037 BitfieldInfo anon_field_info; 2038 2039 if ((this_field_info.bit_offset % character_width) != 0) // not char aligned 2040 { 2041 uint64_t last_field_end = 0; 2042 2043 if (last_field_info.IsValid()) 2044 last_field_end = last_field_info.bit_offset + last_field_info.bit_size; 2045 2046 if (this_field_info.bit_offset != last_field_end) 2047 { 2048 if (((last_field_end % character_width) == 0) || // case 1 2049 (this_field_info.bit_offset - last_field_end >= word_width)) // case 3 2050 { 2051 anon_field_info.bit_size = this_field_info.bit_offset % character_width; 2052 anon_field_info.bit_offset = this_field_info.bit_offset - anon_field_info.bit_size; 2053 } 2054 else // case 2 2055 { 2056 anon_field_info.bit_size = this_field_info.bit_offset - last_field_end; 2057 anon_field_info.bit_offset = last_field_end; 2058 } 2059 } 2060 } 2061 2062 if (anon_field_info.IsValid()) 2063 { 2064 clang::FieldDecl *unnamed_bitfield_decl = class_clang_type.AddFieldToRecordType (NULL, 2065 GetClangASTContext().GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, word_width), 2066 accessibility, 2067 anon_field_info.bit_size); 2068 2069 layout_info.field_offsets.insert(std::make_pair(unnamed_bitfield_decl, anon_field_info.bit_offset)); 2070 } 2071 } 2072 last_field_info = this_field_info; 2073 } 2074 else 2075 { 2076 last_field_info.Clear(); 2077 } 2078 2079 ClangASTType member_clang_type = member_type->GetClangLayoutType(); 2080 2081 { 2082 // Older versions of clang emit array[0] and array[1] in the same way (<rdar://problem/12566646>). 2083 // If the current field is at the end of the structure, then there is definitely no room for extra 2084 // elements and we override the type to array[0]. 2085 2086 ClangASTType member_array_element_type; 2087 uint64_t member_array_size; 2088 bool member_array_is_incomplete; 2089 2090 if (member_clang_type.IsArrayType(&member_array_element_type, 2091 &member_array_size, 2092 &member_array_is_incomplete) && 2093 !member_array_is_incomplete) 2094 { 2095 uint64_t parent_byte_size = parent_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, UINT64_MAX); 2096 2097 if (member_byte_offset >= parent_byte_size) 2098 { 2099 if (member_array_size != 1) 2100 { 2101 GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 " which extends beyond the bounds of 0x%8.8" PRIx64, 2102 MakeUserID(die->GetOffset()), 2103 name, 2104 encoding_uid, 2105 MakeUserID(parent_die->GetOffset())); 2106 } 2107 2108 member_clang_type = GetClangASTContext().CreateArrayType(member_array_element_type, 0, false); 2109 } 2110 } 2111 } 2112 2113 field_decl = class_clang_type.AddFieldToRecordType (name, 2114 member_clang_type, 2115 accessibility, 2116 bit_size); 2117 2118 GetClangASTContext().SetMetadataAsUserID (field_decl, MakeUserID(die->GetOffset())); 2119 2120 layout_info.field_offsets.insert(std::make_pair(field_decl, field_bit_offset)); 2121 2122 } 2123 else 2124 { 2125 if (name) 2126 GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 " which was unable to be parsed", 2127 MakeUserID(die->GetOffset()), 2128 name, 2129 encoding_uid); 2130 else 2131 GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member refers to type 0x%8.8" PRIx64 " which was unable to be parsed", 2132 MakeUserID(die->GetOffset()), 2133 encoding_uid); 2134 } 2135 } 2136 2137 if (prop_name != NULL) 2138 { 2139 clang::ObjCIvarDecl *ivar_decl = NULL; 2140 2141 if (field_decl) 2142 { 2143 ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl); 2144 assert (ivar_decl != NULL); 2145 } 2146 2147 ClangASTMetadata metadata; 2148 metadata.SetUserID (MakeUserID(die->GetOffset())); 2149 delayed_properties.push_back(DelayedAddObjCClassProperty(class_clang_type, 2150 prop_name, 2151 member_type->GetClangLayoutType(), 2152 ivar_decl, 2153 prop_setter_name, 2154 prop_getter_name, 2155 prop_attributes, 2156 &metadata)); 2157 2158 if (ivar_decl) 2159 GetClangASTContext().SetMetadataAsUserID (ivar_decl, MakeUserID(die->GetOffset())); 2160 } 2161 } 2162 } 2163 ++member_idx; 2164 } 2165 break; 2166 2167 case DW_TAG_subprogram: 2168 // Let the type parsing code handle this one for us. 2169 member_function_dies.Append (die); 2170 break; 2171 2172 case DW_TAG_inheritance: 2173 { 2174 is_a_class = true; 2175 if (default_accessibility == eAccessNone) 2176 default_accessibility = eAccessPrivate; 2177 // TODO: implement DW_TAG_inheritance type parsing 2178 DWARFDebugInfoEntry::Attributes attributes; 2179 const size_t num_attributes = die->GetAttributes (this, 2180 dwarf_cu, 2181 fixed_form_sizes, 2182 attributes); 2183 if (num_attributes > 0) 2184 { 2185 Declaration decl; 2186 DWARFExpression location; 2187 lldb::user_id_t encoding_uid = LLDB_INVALID_UID; 2188 AccessType accessibility = default_accessibility; 2189 bool is_virtual = false; 2190 bool is_base_of_class = true; 2191 off_t member_byte_offset = 0; 2192 uint32_t i; 2193 for (i=0; i<num_attributes; ++i) 2194 { 2195 const dw_attr_t attr = attributes.AttributeAtIndex(i); 2196 DWARFFormValue form_value; 2197 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 2198 { 2199 switch (attr) 2200 { 2201 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 2202 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 2203 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 2204 case DW_AT_type: encoding_uid = form_value.Reference(); break; 2205 case DW_AT_data_member_location: 2206 if (form_value.BlockData()) 2207 { 2208 Value initialValue(0); 2209 Value memberOffset(0); 2210 const DWARFDataExtractor& debug_info_data = get_debug_info_data(); 2211 uint32_t block_length = form_value.Unsigned(); 2212 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 2213 if (DWARFExpression::Evaluate (NULL, 2214 NULL, 2215 NULL, 2216 NULL, 2217 module, 2218 debug_info_data, 2219 block_offset, 2220 block_length, 2221 eRegisterKindDWARF, 2222 &initialValue, 2223 memberOffset, 2224 NULL)) 2225 { 2226 member_byte_offset = memberOffset.ResolveValue(NULL).UInt(); 2227 } 2228 } 2229 else 2230 { 2231 // With DWARF 3 and later, if the value is an integer constant, 2232 // this form value is the offset in bytes from the beginning 2233 // of the containing entity. 2234 member_byte_offset = form_value.Unsigned(); 2235 } 2236 break; 2237 2238 case DW_AT_accessibility: 2239 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); 2240 break; 2241 2242 case DW_AT_virtuality: 2243 is_virtual = form_value.Boolean(); 2244 break; 2245 2246 case DW_AT_sibling: 2247 break; 2248 2249 default: 2250 break; 2251 } 2252 } 2253 } 2254 2255 Type *base_class_type = ResolveTypeUID(encoding_uid); 2256 assert(base_class_type); 2257 2258 ClangASTType base_class_clang_type = base_class_type->GetClangFullType(); 2259 assert (base_class_clang_type); 2260 if (class_language == eLanguageTypeObjC) 2261 { 2262 class_clang_type.SetObjCSuperClass(base_class_clang_type); 2263 } 2264 else 2265 { 2266 base_classes.push_back (base_class_clang_type.CreateBaseClassSpecifier (accessibility, 2267 is_virtual, 2268 is_base_of_class)); 2269 2270 if (is_virtual) 2271 { 2272 // Do not specify any offset for virtual inheritance. The DWARF produced by clang doesn't 2273 // give us a constant offset, but gives us a DWARF expressions that requires an actual object 2274 // in memory. the DW_AT_data_member_location for a virtual base class looks like: 2275 // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref, DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref, DW_OP_plus ) 2276 // Given this, there is really no valid response we can give to clang for virtual base 2277 // class offsets, and this should eventually be removed from LayoutRecordType() in the external 2278 // AST source in clang. 2279 } 2280 else 2281 { 2282 layout_info.base_offsets.insert(std::make_pair(base_class_clang_type.GetAsCXXRecordDecl(), 2283 clang::CharUnits::fromQuantity(member_byte_offset))); 2284 } 2285 } 2286 } 2287 } 2288 break; 2289 2290 default: 2291 break; 2292 } 2293 } 2294 2295 return count; 2296 } 2297 2298 2299 clang::DeclContext* 2300 SymbolFileDWARF::GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid) 2301 { 2302 DWARFDebugInfo* debug_info = DebugInfo(); 2303 if (debug_info && UserIDMatches(type_uid)) 2304 { 2305 DWARFCompileUnitSP cu_sp; 2306 const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(type_uid, &cu_sp); 2307 if (die) 2308 return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL); 2309 } 2310 return NULL; 2311 } 2312 2313 clang::DeclContext* 2314 SymbolFileDWARF::GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid) 2315 { 2316 if (UserIDMatches(type_uid)) 2317 return GetClangDeclContextForDIEOffset (sc, type_uid); 2318 return NULL; 2319 } 2320 2321 Type* 2322 SymbolFileDWARF::ResolveTypeUID (lldb::user_id_t type_uid) 2323 { 2324 if (UserIDMatches(type_uid)) 2325 { 2326 DWARFDebugInfo* debug_info = DebugInfo(); 2327 if (debug_info) 2328 { 2329 DWARFCompileUnitSP cu_sp; 2330 const DWARFDebugInfoEntry* type_die = debug_info->GetDIEPtr(type_uid, &cu_sp); 2331 const bool assert_not_being_parsed = true; 2332 return ResolveTypeUID (cu_sp.get(), type_die, assert_not_being_parsed); 2333 } 2334 } 2335 return NULL; 2336 } 2337 2338 Type* 2339 SymbolFileDWARF::ResolveTypeUID (DWARFCompileUnit* cu, const DWARFDebugInfoEntry* die, bool assert_not_being_parsed) 2340 { 2341 if (die != NULL) 2342 { 2343 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 2344 if (log) 2345 GetObjectFile()->GetModule()->LogMessage (log, 2346 "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s'", 2347 die->GetOffset(), 2348 DW_TAG_value_to_name(die->Tag()), 2349 die->GetName(this, cu)); 2350 2351 // We might be coming in in the middle of a type tree (a class 2352 // withing a class, an enum within a class), so parse any needed 2353 // parent DIEs before we get to this one... 2354 const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die); 2355 switch (decl_ctx_die->Tag()) 2356 { 2357 case DW_TAG_structure_type: 2358 case DW_TAG_union_type: 2359 case DW_TAG_class_type: 2360 { 2361 // Get the type, which could be a forward declaration 2362 if (log) 2363 GetObjectFile()->GetModule()->LogMessage (log, 2364 "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent forward type for 0x%8.8x", 2365 die->GetOffset(), 2366 DW_TAG_value_to_name(die->Tag()), 2367 die->GetName(this, cu), 2368 decl_ctx_die->GetOffset()); 2369 // 2370 // Type *parent_type = ResolveTypeUID (cu, decl_ctx_die, assert_not_being_parsed); 2371 // if (child_requires_parent_class_union_or_struct_to_be_completed(die->Tag())) 2372 // { 2373 // if (log) 2374 // GetObjectFile()->GetModule()->LogMessage (log, 2375 // "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent full type for 0x%8.8x since die is a function", 2376 // die->GetOffset(), 2377 // DW_TAG_value_to_name(die->Tag()), 2378 // die->GetName(this, cu), 2379 // decl_ctx_die->GetOffset()); 2380 // // Ask the type to complete itself if it already hasn't since if we 2381 // // want a function (method or static) from a class, the class must 2382 // // create itself and add it's own methods and class functions. 2383 // if (parent_type) 2384 // parent_type->GetClangFullType(); 2385 // } 2386 } 2387 break; 2388 2389 default: 2390 break; 2391 } 2392 return ResolveType (cu, die); 2393 } 2394 return NULL; 2395 } 2396 2397 // This function is used when SymbolFileDWARFDebugMap owns a bunch of 2398 // SymbolFileDWARF objects to detect if this DWARF file is the one that 2399 // can resolve a clang_type. 2400 bool 2401 SymbolFileDWARF::HasForwardDeclForClangType (const ClangASTType &clang_type) 2402 { 2403 ClangASTType clang_type_no_qualifiers = clang_type.RemoveFastQualifiers(); 2404 const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers.GetOpaqueQualType()); 2405 return die != NULL; 2406 } 2407 2408 2409 bool 2410 SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (ClangASTType &clang_type) 2411 { 2412 // We have a struct/union/class/enum that needs to be fully resolved. 2413 ClangASTType clang_type_no_qualifiers = clang_type.RemoveFastQualifiers(); 2414 const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers.GetOpaqueQualType()); 2415 if (die == NULL) 2416 { 2417 // We have already resolved this type... 2418 return true; 2419 } 2420 // Once we start resolving this type, remove it from the forward declaration 2421 // map in case anyone child members or other types require this type to get resolved. 2422 // The type will get resolved when all of the calls to SymbolFileDWARF::ResolveClangOpaqueTypeDefinition 2423 // are done. 2424 m_forward_decl_clang_type_to_die.erase (clang_type_no_qualifiers.GetOpaqueQualType()); 2425 2426 // Disable external storage for this type so we don't get anymore 2427 // clang::ExternalASTSource queries for this type. 2428 clang_type.SetHasExternalStorage (false); 2429 2430 DWARFDebugInfo* debug_info = DebugInfo(); 2431 2432 DWARFCompileUnit *dwarf_cu = debug_info->GetCompileUnitContainingDIE (die->GetOffset()).get(); 2433 Type *type = m_die_to_type.lookup (die); 2434 2435 const dw_tag_t tag = die->Tag(); 2436 2437 Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION)); 2438 if (log) 2439 GetObjectFile()->GetModule()->LogMessageVerboseBacktrace (log, 2440 "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...", 2441 MakeUserID(die->GetOffset()), 2442 DW_TAG_value_to_name(tag), 2443 type->GetName().AsCString()); 2444 assert (clang_type); 2445 DWARFDebugInfoEntry::Attributes attributes; 2446 2447 switch (tag) 2448 { 2449 case DW_TAG_structure_type: 2450 case DW_TAG_union_type: 2451 case DW_TAG_class_type: 2452 { 2453 LayoutInfo layout_info; 2454 2455 { 2456 if (die->HasChildren()) 2457 { 2458 LanguageType class_language = eLanguageTypeUnknown; 2459 if (clang_type.IsObjCObjectOrInterfaceType()) 2460 { 2461 class_language = eLanguageTypeObjC; 2462 // For objective C we don't start the definition when 2463 // the class is created. 2464 clang_type.StartTagDeclarationDefinition (); 2465 } 2466 2467 int tag_decl_kind = -1; 2468 AccessType default_accessibility = eAccessNone; 2469 if (tag == DW_TAG_structure_type) 2470 { 2471 tag_decl_kind = clang::TTK_Struct; 2472 default_accessibility = eAccessPublic; 2473 } 2474 else if (tag == DW_TAG_union_type) 2475 { 2476 tag_decl_kind = clang::TTK_Union; 2477 default_accessibility = eAccessPublic; 2478 } 2479 else if (tag == DW_TAG_class_type) 2480 { 2481 tag_decl_kind = clang::TTK_Class; 2482 default_accessibility = eAccessPrivate; 2483 } 2484 2485 SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu)); 2486 std::vector<clang::CXXBaseSpecifier *> base_classes; 2487 std::vector<int> member_accessibilities; 2488 bool is_a_class = false; 2489 // Parse members and base classes first 2490 DWARFDIECollection member_function_dies; 2491 2492 DelayedPropertyList delayed_properties; 2493 ParseChildMembers (sc, 2494 dwarf_cu, 2495 die, 2496 clang_type, 2497 class_language, 2498 base_classes, 2499 member_accessibilities, 2500 member_function_dies, 2501 delayed_properties, 2502 default_accessibility, 2503 is_a_class, 2504 layout_info); 2505 2506 // Now parse any methods if there were any... 2507 size_t num_functions = member_function_dies.Size(); 2508 if (num_functions > 0) 2509 { 2510 for (size_t i=0; i<num_functions; ++i) 2511 { 2512 ResolveType(dwarf_cu, member_function_dies.GetDIEPtrAtIndex(i)); 2513 } 2514 } 2515 2516 if (class_language == eLanguageTypeObjC) 2517 { 2518 ConstString class_name (clang_type.GetTypeName()); 2519 if (class_name) 2520 { 2521 DIEArray method_die_offsets; 2522 if (m_using_apple_tables) 2523 { 2524 if (m_apple_objc_ap.get()) 2525 m_apple_objc_ap->FindByName(class_name.GetCString(), method_die_offsets); 2526 } 2527 else 2528 { 2529 if (!m_indexed) 2530 Index (); 2531 2532 m_objc_class_selectors_index.Find (class_name, method_die_offsets); 2533 } 2534 2535 if (!method_die_offsets.empty()) 2536 { 2537 DWARFDebugInfo* debug_info = DebugInfo(); 2538 2539 DWARFCompileUnit* method_cu = NULL; 2540 const size_t num_matches = method_die_offsets.size(); 2541 for (size_t i=0; i<num_matches; ++i) 2542 { 2543 const dw_offset_t die_offset = method_die_offsets[i]; 2544 DWARFDebugInfoEntry *method_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &method_cu); 2545 2546 if (method_die) 2547 ResolveType (method_cu, method_die); 2548 else 2549 { 2550 if (m_using_apple_tables) 2551 { 2552 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_objc accelerator table had bad die 0x%8.8x for '%s')\n", 2553 die_offset, class_name.GetCString()); 2554 } 2555 } 2556 } 2557 } 2558 2559 for (DelayedPropertyList::iterator pi = delayed_properties.begin(), pe = delayed_properties.end(); 2560 pi != pe; 2561 ++pi) 2562 pi->Finalize(); 2563 } 2564 } 2565 2566 // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we 2567 // need to tell the clang type it is actually a class. 2568 if (class_language != eLanguageTypeObjC) 2569 { 2570 if (is_a_class && tag_decl_kind != clang::TTK_Class) 2571 clang_type.SetTagTypeKind (clang::TTK_Class); 2572 } 2573 2574 // Since DW_TAG_structure_type gets used for both classes 2575 // and structures, we may need to set any DW_TAG_member 2576 // fields to have a "private" access if none was specified. 2577 // When we parsed the child members we tracked that actual 2578 // accessibility value for each DW_TAG_member in the 2579 // "member_accessibilities" array. If the value for the 2580 // member is zero, then it was set to the "default_accessibility" 2581 // which for structs was "public". Below we correct this 2582 // by setting any fields to "private" that weren't correctly 2583 // set. 2584 if (is_a_class && !member_accessibilities.empty()) 2585 { 2586 // This is a class and all members that didn't have 2587 // their access specified are private. 2588 clang_type.SetDefaultAccessForRecordFields (eAccessPrivate, 2589 &member_accessibilities.front(), 2590 member_accessibilities.size()); 2591 } 2592 2593 if (!base_classes.empty()) 2594 { 2595 // Make sure all base classes refer to complete types and not 2596 // forward declarations. If we don't do this, clang will crash 2597 // with an assertion in the call to clang_type.SetBaseClassesForClassType() 2598 bool base_class_error = false; 2599 for (auto &base_class : base_classes) 2600 { 2601 clang::TypeSourceInfo *type_source_info = base_class->getTypeSourceInfo(); 2602 if (type_source_info) 2603 { 2604 ClangASTType base_class_type (GetClangASTContext().getASTContext(), type_source_info->getType()); 2605 if (base_class_type.GetCompleteType() == false) 2606 { 2607 if (!base_class_error) 2608 { 2609 GetObjectFile()->GetModule()->ReportError ("DWARF DIE at 0x%8.8x for class '%s' has a base class '%s' that is a forward declaration, not a complete definition.\nPlease file a bug against the compiler and include the preprocessed output for %s", 2610 die->GetOffset(), 2611 die->GetName(this, dwarf_cu), 2612 base_class_type.GetTypeName().GetCString(), 2613 sc.comp_unit ? sc.comp_unit->GetPath().c_str() : "the source file"); 2614 } 2615 // We have no choice other than to pretend that the base class 2616 // is complete. If we don't do this, clang will crash when we 2617 // call setBases() inside of "clang_type.SetBaseClassesForClassType()" 2618 // below. Since we provide layout assistance, all ivars in this 2619 // class and other classes will be fine, this is the best we can do 2620 // short of crashing. 2621 base_class_type.StartTagDeclarationDefinition (); 2622 base_class_type.CompleteTagDeclarationDefinition (); 2623 } 2624 } 2625 } 2626 clang_type.SetBaseClassesForClassType (&base_classes.front(), 2627 base_classes.size()); 2628 2629 // Clang will copy each CXXBaseSpecifier in "base_classes" 2630 // so we have to free them all. 2631 ClangASTType::DeleteBaseClassSpecifiers (&base_classes.front(), 2632 base_classes.size()); 2633 } 2634 } 2635 } 2636 2637 clang_type.BuildIndirectFields (); 2638 clang_type.CompleteTagDeclarationDefinition (); 2639 2640 if (!layout_info.field_offsets.empty() || 2641 !layout_info.base_offsets.empty() || 2642 !layout_info.vbase_offsets.empty() ) 2643 { 2644 if (type) 2645 layout_info.bit_size = type->GetByteSize() * 8; 2646 if (layout_info.bit_size == 0) 2647 layout_info.bit_size = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, 0) * 8; 2648 2649 clang::CXXRecordDecl *record_decl = clang_type.GetAsCXXRecordDecl(); 2650 if (record_decl) 2651 { 2652 if (log) 2653 { 2654 GetObjectFile()->GetModule()->LogMessage (log, 2655 "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) caching layout info for record_decl = %p, bit_size = %" PRIu64 ", alignment = %" PRIu64 ", field_offsets[%u], base_offsets[%u], vbase_offsets[%u])", 2656 static_cast<void*>(clang_type.GetOpaqueQualType()), 2657 static_cast<void*>(record_decl), 2658 layout_info.bit_size, 2659 layout_info.alignment, 2660 static_cast<uint32_t>(layout_info.field_offsets.size()), 2661 static_cast<uint32_t>(layout_info.base_offsets.size()), 2662 static_cast<uint32_t>(layout_info.vbase_offsets.size())); 2663 2664 uint32_t idx; 2665 { 2666 llvm::DenseMap <const clang::FieldDecl *, uint64_t>::const_iterator pos, end = layout_info.field_offsets.end(); 2667 for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; ++pos, ++idx) 2668 { 2669 GetObjectFile()->GetModule()->LogMessage (log, 2670 "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) field[%u] = { bit_offset=%u, name='%s' }", 2671 static_cast<void*>(clang_type.GetOpaqueQualType()), 2672 idx, 2673 static_cast<uint32_t>(pos->second), 2674 pos->first->getNameAsString().c_str()); 2675 } 2676 } 2677 2678 { 2679 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator base_pos, base_end = layout_info.base_offsets.end(); 2680 for (idx = 0, base_pos = layout_info.base_offsets.begin(); base_pos != base_end; ++base_pos, ++idx) 2681 { 2682 GetObjectFile()->GetModule()->LogMessage (log, 2683 "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) base[%u] = { byte_offset=%u, name='%s' }", 2684 clang_type.GetOpaqueQualType(), 2685 idx, 2686 (uint32_t)base_pos->second.getQuantity(), 2687 base_pos->first->getNameAsString().c_str()); 2688 } 2689 } 2690 { 2691 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator vbase_pos, vbase_end = layout_info.vbase_offsets.end(); 2692 for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); vbase_pos != vbase_end; ++vbase_pos, ++idx) 2693 { 2694 GetObjectFile()->GetModule()->LogMessage (log, 2695 "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) vbase[%u] = { byte_offset=%u, name='%s' }", 2696 static_cast<void*>(clang_type.GetOpaqueQualType()), 2697 idx, 2698 static_cast<uint32_t>(vbase_pos->second.getQuantity()), 2699 vbase_pos->first->getNameAsString().c_str()); 2700 } 2701 } 2702 } 2703 m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info)); 2704 } 2705 } 2706 } 2707 2708 return (bool)clang_type; 2709 2710 case DW_TAG_enumeration_type: 2711 clang_type.StartTagDeclarationDefinition (); 2712 if (die->HasChildren()) 2713 { 2714 SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu)); 2715 bool is_signed = false; 2716 clang_type.IsIntegerType(is_signed); 2717 ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), dwarf_cu, die); 2718 } 2719 clang_type.CompleteTagDeclarationDefinition (); 2720 return (bool)clang_type; 2721 2722 default: 2723 assert(false && "not a forward clang type decl!"); 2724 break; 2725 } 2726 return false; 2727 } 2728 2729 Type* 2730 SymbolFileDWARF::ResolveType (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* type_die, bool assert_not_being_parsed) 2731 { 2732 if (type_die != NULL) 2733 { 2734 Type *type = m_die_to_type.lookup (type_die); 2735 2736 if (type == NULL) 2737 type = GetTypeForDIE (dwarf_cu, type_die).get(); 2738 2739 if (assert_not_being_parsed) 2740 { 2741 if (type != DIE_IS_BEING_PARSED) 2742 return type; 2743 2744 GetObjectFile()->GetModule()->ReportError ("Parsing a die that is being parsed die: 0x%8.8x: %s %s", 2745 type_die->GetOffset(), 2746 DW_TAG_value_to_name(type_die->Tag()), 2747 type_die->GetName(this, dwarf_cu)); 2748 2749 } 2750 else 2751 return type; 2752 } 2753 return NULL; 2754 } 2755 2756 CompileUnit* 2757 SymbolFileDWARF::GetCompUnitForDWARFCompUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx) 2758 { 2759 // Check if the symbol vendor already knows about this compile unit? 2760 if (dwarf_cu->GetUserData() == NULL) 2761 { 2762 // The symbol vendor doesn't know about this compile unit, we 2763 // need to parse and add it to the symbol vendor object. 2764 return ParseCompileUnit(dwarf_cu, cu_idx).get(); 2765 } 2766 return (CompileUnit*)dwarf_cu->GetUserData(); 2767 } 2768 2769 bool 2770 SymbolFileDWARF::GetFunction (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* func_die, SymbolContext& sc) 2771 { 2772 sc.Clear(false); 2773 // Check if the symbol vendor already knows about this compile unit? 2774 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 2775 2776 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(func_die->GetOffset())).get(); 2777 if (sc.function == NULL) 2778 sc.function = ParseCompileUnitFunction(sc, dwarf_cu, func_die); 2779 2780 if (sc.function) 2781 { 2782 sc.module_sp = sc.function->CalculateSymbolContextModule(); 2783 return true; 2784 } 2785 2786 return false; 2787 } 2788 2789 uint32_t 2790 SymbolFileDWARF::ResolveSymbolContext (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc) 2791 { 2792 Timer scoped_timer(__PRETTY_FUNCTION__, 2793 "SymbolFileDWARF::ResolveSymbolContext (so_addr = { section = %p, offset = 0x%" PRIx64 " }, resolve_scope = 0x%8.8x)", 2794 static_cast<void*>(so_addr.GetSection().get()), 2795 so_addr.GetOffset(), resolve_scope); 2796 uint32_t resolved = 0; 2797 if (resolve_scope & ( eSymbolContextCompUnit | 2798 eSymbolContextFunction | 2799 eSymbolContextBlock | 2800 eSymbolContextLineEntry)) 2801 { 2802 lldb::addr_t file_vm_addr = so_addr.GetFileAddress(); 2803 2804 DWARFDebugInfo* debug_info = DebugInfo(); 2805 if (debug_info) 2806 { 2807 const dw_offset_t cu_offset = debug_info->GetCompileUnitAranges().FindAddress(file_vm_addr); 2808 if (cu_offset != DW_INVALID_OFFSET) 2809 { 2810 uint32_t cu_idx = DW_INVALID_INDEX; 2811 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnit(cu_offset, &cu_idx).get(); 2812 if (dwarf_cu) 2813 { 2814 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx); 2815 if (sc.comp_unit) 2816 { 2817 resolved |= eSymbolContextCompUnit; 2818 2819 bool force_check_line_table = false; 2820 if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock)) 2821 { 2822 DWARFDebugInfoEntry *function_die = NULL; 2823 DWARFDebugInfoEntry *block_die = NULL; 2824 if (resolve_scope & eSymbolContextBlock) 2825 { 2826 dwarf_cu->LookupAddress(file_vm_addr, &function_die, &block_die); 2827 } 2828 else 2829 { 2830 dwarf_cu->LookupAddress(file_vm_addr, &function_die, NULL); 2831 } 2832 2833 if (function_die != NULL) 2834 { 2835 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get(); 2836 if (sc.function == NULL) 2837 sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die); 2838 } 2839 else 2840 { 2841 // We might have had a compile unit that had discontiguous 2842 // address ranges where the gaps are symbols that don't have 2843 // any debug info. Discontiguous compile unit address ranges 2844 // should only happen when there aren't other functions from 2845 // other compile units in these gaps. This helps keep the size 2846 // of the aranges down. 2847 force_check_line_table = true; 2848 } 2849 2850 if (sc.function != NULL) 2851 { 2852 resolved |= eSymbolContextFunction; 2853 2854 if (resolve_scope & eSymbolContextBlock) 2855 { 2856 Block& block = sc.function->GetBlock (true); 2857 2858 if (block_die != NULL) 2859 sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset())); 2860 else 2861 sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset())); 2862 if (sc.block) 2863 resolved |= eSymbolContextBlock; 2864 } 2865 } 2866 } 2867 2868 if ((resolve_scope & eSymbolContextLineEntry) || force_check_line_table) 2869 { 2870 LineTable *line_table = sc.comp_unit->GetLineTable(); 2871 if (line_table != NULL) 2872 { 2873 // And address that makes it into this function should be in terms 2874 // of this debug file if there is no debug map, or it will be an 2875 // address in the .o file which needs to be fixed up to be in terms 2876 // of the debug map executable. Either way, calling FixupAddress() 2877 // will work for us. 2878 Address exe_so_addr (so_addr); 2879 if (FixupAddress(exe_so_addr)) 2880 { 2881 if (line_table->FindLineEntryByAddress (exe_so_addr, sc.line_entry)) 2882 { 2883 resolved |= eSymbolContextLineEntry; 2884 } 2885 } 2886 } 2887 } 2888 2889 if (force_check_line_table && !(resolved & eSymbolContextLineEntry)) 2890 { 2891 // We might have had a compile unit that had discontiguous 2892 // address ranges where the gaps are symbols that don't have 2893 // any debug info. Discontiguous compile unit address ranges 2894 // should only happen when there aren't other functions from 2895 // other compile units in these gaps. This helps keep the size 2896 // of the aranges down. 2897 sc.comp_unit = NULL; 2898 resolved &= ~eSymbolContextCompUnit; 2899 } 2900 } 2901 else 2902 { 2903 GetObjectFile()->GetModule()->ReportWarning ("0x%8.8x: compile unit %u failed to create a valid lldb_private::CompileUnit class.", 2904 cu_offset, 2905 cu_idx); 2906 } 2907 } 2908 } 2909 } 2910 } 2911 return resolved; 2912 } 2913 2914 2915 2916 uint32_t 2917 SymbolFileDWARF::ResolveSymbolContext(const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list) 2918 { 2919 const uint32_t prev_size = sc_list.GetSize(); 2920 if (resolve_scope & eSymbolContextCompUnit) 2921 { 2922 DWARFDebugInfo* debug_info = DebugInfo(); 2923 if (debug_info) 2924 { 2925 uint32_t cu_idx; 2926 DWARFCompileUnit* dwarf_cu = NULL; 2927 2928 for (cu_idx = 0; (dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx)) != NULL; ++cu_idx) 2929 { 2930 CompileUnit *dc_cu = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx); 2931 const bool full_match = (bool)file_spec.GetDirectory(); 2932 bool file_spec_matches_cu_file_spec = dc_cu != NULL && FileSpec::Equal(file_spec, *dc_cu, full_match); 2933 if (check_inlines || file_spec_matches_cu_file_spec) 2934 { 2935 SymbolContext sc (m_obj_file->GetModule()); 2936 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx); 2937 if (sc.comp_unit) 2938 { 2939 uint32_t file_idx = UINT32_MAX; 2940 2941 // If we are looking for inline functions only and we don't 2942 // find it in the support files, we are done. 2943 if (check_inlines) 2944 { 2945 file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true); 2946 if (file_idx == UINT32_MAX) 2947 continue; 2948 } 2949 2950 if (line != 0) 2951 { 2952 LineTable *line_table = sc.comp_unit->GetLineTable(); 2953 2954 if (line_table != NULL && line != 0) 2955 { 2956 // We will have already looked up the file index if 2957 // we are searching for inline entries. 2958 if (!check_inlines) 2959 file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true); 2960 2961 if (file_idx != UINT32_MAX) 2962 { 2963 uint32_t found_line; 2964 uint32_t line_idx = line_table->FindLineEntryIndexByFileIndex (0, file_idx, line, false, &sc.line_entry); 2965 found_line = sc.line_entry.line; 2966 2967 while (line_idx != UINT32_MAX) 2968 { 2969 sc.function = NULL; 2970 sc.block = NULL; 2971 if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock)) 2972 { 2973 const lldb::addr_t file_vm_addr = sc.line_entry.range.GetBaseAddress().GetFileAddress(); 2974 if (file_vm_addr != LLDB_INVALID_ADDRESS) 2975 { 2976 DWARFDebugInfoEntry *function_die = NULL; 2977 DWARFDebugInfoEntry *block_die = NULL; 2978 dwarf_cu->LookupAddress(file_vm_addr, &function_die, resolve_scope & eSymbolContextBlock ? &block_die : NULL); 2979 2980 if (function_die != NULL) 2981 { 2982 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get(); 2983 if (sc.function == NULL) 2984 sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die); 2985 } 2986 2987 if (sc.function != NULL) 2988 { 2989 Block& block = sc.function->GetBlock (true); 2990 2991 if (block_die != NULL) 2992 sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset())); 2993 else if (function_die != NULL) 2994 sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset())); 2995 } 2996 } 2997 } 2998 2999 sc_list.Append(sc); 3000 line_idx = line_table->FindLineEntryIndexByFileIndex (line_idx + 1, file_idx, found_line, true, &sc.line_entry); 3001 } 3002 } 3003 } 3004 else if (file_spec_matches_cu_file_spec && !check_inlines) 3005 { 3006 // only append the context if we aren't looking for inline call sites 3007 // by file and line and if the file spec matches that of the compile unit 3008 sc_list.Append(sc); 3009 } 3010 } 3011 else if (file_spec_matches_cu_file_spec && !check_inlines) 3012 { 3013 // only append the context if we aren't looking for inline call sites 3014 // by file and line and if the file spec matches that of the compile unit 3015 sc_list.Append(sc); 3016 } 3017 3018 if (!check_inlines) 3019 break; 3020 } 3021 } 3022 } 3023 } 3024 } 3025 return sc_list.GetSize() - prev_size; 3026 } 3027 3028 void 3029 SymbolFileDWARF::Index () 3030 { 3031 if (m_indexed) 3032 return; 3033 m_indexed = true; 3034 Timer scoped_timer (__PRETTY_FUNCTION__, 3035 "SymbolFileDWARF::Index (%s)", 3036 GetObjectFile()->GetFileSpec().GetFilename().AsCString("<Unknown>")); 3037 3038 DWARFDebugInfo* debug_info = DebugInfo(); 3039 if (debug_info) 3040 { 3041 uint32_t cu_idx = 0; 3042 const uint32_t num_compile_units = GetNumCompileUnits(); 3043 for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) 3044 { 3045 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx); 3046 3047 bool clear_dies = dwarf_cu->ExtractDIEsIfNeeded (false) > 1; 3048 3049 dwarf_cu->Index (cu_idx, 3050 m_function_basename_index, 3051 m_function_fullname_index, 3052 m_function_method_index, 3053 m_function_selector_index, 3054 m_objc_class_selectors_index, 3055 m_global_index, 3056 m_type_index, 3057 m_namespace_index); 3058 3059 // Keep memory down by clearing DIEs if this generate function 3060 // caused them to be parsed 3061 if (clear_dies) 3062 dwarf_cu->ClearDIEs (true); 3063 } 3064 3065 m_function_basename_index.Finalize(); 3066 m_function_fullname_index.Finalize(); 3067 m_function_method_index.Finalize(); 3068 m_function_selector_index.Finalize(); 3069 m_objc_class_selectors_index.Finalize(); 3070 m_global_index.Finalize(); 3071 m_type_index.Finalize(); 3072 m_namespace_index.Finalize(); 3073 3074 #if defined (ENABLE_DEBUG_PRINTF) 3075 StreamFile s(stdout, false); 3076 s.Printf ("DWARF index for '%s':", 3077 GetObjectFile()->GetFileSpec().GetPath().c_str()); 3078 s.Printf("\nFunction basenames:\n"); m_function_basename_index.Dump (&s); 3079 s.Printf("\nFunction fullnames:\n"); m_function_fullname_index.Dump (&s); 3080 s.Printf("\nFunction methods:\n"); m_function_method_index.Dump (&s); 3081 s.Printf("\nFunction selectors:\n"); m_function_selector_index.Dump (&s); 3082 s.Printf("\nObjective C class selectors:\n"); m_objc_class_selectors_index.Dump (&s); 3083 s.Printf("\nGlobals and statics:\n"); m_global_index.Dump (&s); 3084 s.Printf("\nTypes:\n"); m_type_index.Dump (&s); 3085 s.Printf("\nNamepaces:\n"); m_namespace_index.Dump (&s); 3086 #endif 3087 } 3088 } 3089 3090 bool 3091 SymbolFileDWARF::NamespaceDeclMatchesThisSymbolFile (const ClangNamespaceDecl *namespace_decl) 3092 { 3093 if (namespace_decl == NULL) 3094 { 3095 // Invalid namespace decl which means we aren't matching only things 3096 // in this symbol file, so return true to indicate it matches this 3097 // symbol file. 3098 return true; 3099 } 3100 3101 clang::ASTContext *namespace_ast = namespace_decl->GetASTContext(); 3102 3103 if (namespace_ast == NULL) 3104 return true; // No AST in the "namespace_decl", return true since it 3105 // could then match any symbol file, including this one 3106 3107 if (namespace_ast == GetClangASTContext().getASTContext()) 3108 return true; // The ASTs match, return true 3109 3110 // The namespace AST was valid, and it does not match... 3111 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3112 3113 if (log) 3114 GetObjectFile()->GetModule()->LogMessage(log, "Valid namespace does not match symbol file"); 3115 3116 return false; 3117 } 3118 3119 bool 3120 SymbolFileDWARF::DIEIsInNamespace (const ClangNamespaceDecl *namespace_decl, 3121 DWARFCompileUnit* cu, 3122 const DWARFDebugInfoEntry* die) 3123 { 3124 // No namespace specified, so the answer is 3125 if (namespace_decl == NULL) 3126 return true; 3127 3128 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3129 3130 const DWARFDebugInfoEntry *decl_ctx_die = NULL; 3131 clang::DeclContext *die_clang_decl_ctx = GetClangDeclContextContainingDIE (cu, die, &decl_ctx_die); 3132 if (decl_ctx_die) 3133 { 3134 clang::NamespaceDecl *clang_namespace_decl = namespace_decl->GetNamespaceDecl(); 3135 3136 if (clang_namespace_decl) 3137 { 3138 if (decl_ctx_die->Tag() != DW_TAG_namespace) 3139 { 3140 if (log) 3141 GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent is not a namespace"); 3142 return false; 3143 } 3144 3145 if (clang_namespace_decl == die_clang_decl_ctx) 3146 return true; 3147 else 3148 return false; 3149 } 3150 else 3151 { 3152 // We have a namespace_decl that was not NULL but it contained 3153 // a NULL "clang::NamespaceDecl", so this means the global namespace 3154 // So as long the contained decl context DIE isn't a namespace 3155 // we should be ok. 3156 if (decl_ctx_die->Tag() != DW_TAG_namespace) 3157 return true; 3158 } 3159 } 3160 3161 if (log) 3162 GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent doesn't exist"); 3163 3164 return false; 3165 } 3166 uint32_t 3167 SymbolFileDWARF::FindGlobalVariables (const ConstString &name, const lldb_private::ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables) 3168 { 3169 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3170 3171 if (log) 3172 GetObjectFile()->GetModule()->LogMessage (log, 3173 "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables)", 3174 name.GetCString(), 3175 static_cast<const void*>(namespace_decl), 3176 append, max_matches); 3177 3178 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) 3179 return 0; 3180 3181 DWARFDebugInfo* info = DebugInfo(); 3182 if (info == NULL) 3183 return 0; 3184 3185 // If we aren't appending the results to this list, then clear the list 3186 if (!append) 3187 variables.Clear(); 3188 3189 // Remember how many variables are in the list before we search in case 3190 // we are appending the results to a variable list. 3191 const uint32_t original_size = variables.GetSize(); 3192 3193 DIEArray die_offsets; 3194 3195 if (m_using_apple_tables) 3196 { 3197 if (m_apple_names_ap.get()) 3198 { 3199 const char *name_cstr = name.GetCString(); 3200 llvm::StringRef basename; 3201 llvm::StringRef context; 3202 3203 if (!CPPLanguageRuntime::ExtractContextAndIdentifier(name_cstr, context, basename)) 3204 basename = name_cstr; 3205 3206 m_apple_names_ap->FindByName (basename.data(), die_offsets); 3207 } 3208 } 3209 else 3210 { 3211 // Index the DWARF if we haven't already 3212 if (!m_indexed) 3213 Index (); 3214 3215 m_global_index.Find (name, die_offsets); 3216 } 3217 3218 const size_t num_die_matches = die_offsets.size(); 3219 if (num_die_matches) 3220 { 3221 SymbolContext sc; 3222 sc.module_sp = m_obj_file->GetModule(); 3223 assert (sc.module_sp); 3224 3225 DWARFDebugInfo* debug_info = DebugInfo(); 3226 DWARFCompileUnit* dwarf_cu = NULL; 3227 const DWARFDebugInfoEntry* die = NULL; 3228 bool done = false; 3229 for (size_t i=0; i<num_die_matches && !done; ++i) 3230 { 3231 const dw_offset_t die_offset = die_offsets[i]; 3232 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3233 3234 if (die) 3235 { 3236 switch (die->Tag()) 3237 { 3238 default: 3239 case DW_TAG_subprogram: 3240 case DW_TAG_inlined_subroutine: 3241 case DW_TAG_try_block: 3242 case DW_TAG_catch_block: 3243 break; 3244 3245 case DW_TAG_variable: 3246 { 3247 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 3248 3249 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 3250 continue; 3251 3252 ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables); 3253 3254 if (variables.GetSize() - original_size >= max_matches) 3255 done = true; 3256 } 3257 break; 3258 } 3259 } 3260 else 3261 { 3262 if (m_using_apple_tables) 3263 { 3264 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')\n", 3265 die_offset, name.GetCString()); 3266 } 3267 } 3268 } 3269 } 3270 3271 // Return the number of variable that were appended to the list 3272 const uint32_t num_matches = variables.GetSize() - original_size; 3273 if (log && num_matches > 0) 3274 { 3275 GetObjectFile()->GetModule()->LogMessage (log, 3276 "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables) => %u", 3277 name.GetCString(), 3278 static_cast<const void*>(namespace_decl), 3279 append, max_matches, 3280 num_matches); 3281 } 3282 return num_matches; 3283 } 3284 3285 uint32_t 3286 SymbolFileDWARF::FindGlobalVariables(const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables) 3287 { 3288 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3289 3290 if (log) 3291 { 3292 GetObjectFile()->GetModule()->LogMessage (log, 3293 "SymbolFileDWARF::FindGlobalVariables (regex=\"%s\", append=%u, max_matches=%u, variables)", 3294 regex.GetText(), append, 3295 max_matches); 3296 } 3297 3298 DWARFDebugInfo* info = DebugInfo(); 3299 if (info == NULL) 3300 return 0; 3301 3302 // If we aren't appending the results to this list, then clear the list 3303 if (!append) 3304 variables.Clear(); 3305 3306 // Remember how many variables are in the list before we search in case 3307 // we are appending the results to a variable list. 3308 const uint32_t original_size = variables.GetSize(); 3309 3310 DIEArray die_offsets; 3311 3312 if (m_using_apple_tables) 3313 { 3314 if (m_apple_names_ap.get()) 3315 { 3316 DWARFMappedHash::DIEInfoArray hash_data_array; 3317 if (m_apple_names_ap->AppendAllDIEsThatMatchingRegex (regex, hash_data_array)) 3318 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); 3319 } 3320 } 3321 else 3322 { 3323 // Index the DWARF if we haven't already 3324 if (!m_indexed) 3325 Index (); 3326 3327 m_global_index.Find (regex, die_offsets); 3328 } 3329 3330 SymbolContext sc; 3331 sc.module_sp = m_obj_file->GetModule(); 3332 assert (sc.module_sp); 3333 3334 DWARFCompileUnit* dwarf_cu = NULL; 3335 const DWARFDebugInfoEntry* die = NULL; 3336 const size_t num_matches = die_offsets.size(); 3337 if (num_matches) 3338 { 3339 DWARFDebugInfo* debug_info = DebugInfo(); 3340 for (size_t i=0; i<num_matches; ++i) 3341 { 3342 const dw_offset_t die_offset = die_offsets[i]; 3343 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3344 3345 if (die) 3346 { 3347 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 3348 3349 ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables); 3350 3351 if (variables.GetSize() - original_size >= max_matches) 3352 break; 3353 } 3354 else 3355 { 3356 if (m_using_apple_tables) 3357 { 3358 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for regex '%s')\n", 3359 die_offset, regex.GetText()); 3360 } 3361 } 3362 } 3363 } 3364 3365 // Return the number of variable that were appended to the list 3366 return variables.GetSize() - original_size; 3367 } 3368 3369 3370 bool 3371 SymbolFileDWARF::ResolveFunction (dw_offset_t die_offset, 3372 DWARFCompileUnit *&dwarf_cu, 3373 SymbolContextList& sc_list) 3374 { 3375 const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3376 return ResolveFunction (dwarf_cu, die, sc_list); 3377 } 3378 3379 3380 bool 3381 SymbolFileDWARF::ResolveFunction (DWARFCompileUnit *cu, 3382 const DWARFDebugInfoEntry *die, 3383 SymbolContextList& sc_list) 3384 { 3385 SymbolContext sc; 3386 3387 if (die == NULL) 3388 return false; 3389 3390 // If we were passed a die that is not a function, just return false... 3391 if (die->Tag() != DW_TAG_subprogram && die->Tag() != DW_TAG_inlined_subroutine) 3392 return false; 3393 3394 const DWARFDebugInfoEntry* inlined_die = NULL; 3395 if (die->Tag() == DW_TAG_inlined_subroutine) 3396 { 3397 inlined_die = die; 3398 3399 while ((die = die->GetParent()) != NULL) 3400 { 3401 if (die->Tag() == DW_TAG_subprogram) 3402 break; 3403 } 3404 } 3405 assert (die && die->Tag() == DW_TAG_subprogram); 3406 if (GetFunction (cu, die, sc)) 3407 { 3408 Address addr; 3409 // Parse all blocks if needed 3410 if (inlined_die) 3411 { 3412 sc.block = sc.function->GetBlock (true).FindBlockByID (MakeUserID(inlined_die->GetOffset())); 3413 assert (sc.block != NULL); 3414 if (sc.block->GetStartAddress (addr) == false) 3415 addr.Clear(); 3416 } 3417 else 3418 { 3419 sc.block = NULL; 3420 addr = sc.function->GetAddressRange().GetBaseAddress(); 3421 } 3422 3423 if (addr.IsValid()) 3424 { 3425 sc_list.Append(sc); 3426 return true; 3427 } 3428 } 3429 3430 return false; 3431 } 3432 3433 void 3434 SymbolFileDWARF::FindFunctions (const ConstString &name, 3435 const NameToDIE &name_to_die, 3436 SymbolContextList& sc_list) 3437 { 3438 DIEArray die_offsets; 3439 if (name_to_die.Find (name, die_offsets)) 3440 { 3441 ParseFunctions (die_offsets, sc_list); 3442 } 3443 } 3444 3445 3446 void 3447 SymbolFileDWARF::FindFunctions (const RegularExpression ®ex, 3448 const NameToDIE &name_to_die, 3449 SymbolContextList& sc_list) 3450 { 3451 DIEArray die_offsets; 3452 if (name_to_die.Find (regex, die_offsets)) 3453 { 3454 ParseFunctions (die_offsets, sc_list); 3455 } 3456 } 3457 3458 3459 void 3460 SymbolFileDWARF::FindFunctions (const RegularExpression ®ex, 3461 const DWARFMappedHash::MemoryTable &memory_table, 3462 SymbolContextList& sc_list) 3463 { 3464 DIEArray die_offsets; 3465 DWARFMappedHash::DIEInfoArray hash_data_array; 3466 if (memory_table.AppendAllDIEsThatMatchingRegex (regex, hash_data_array)) 3467 { 3468 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); 3469 ParseFunctions (die_offsets, sc_list); 3470 } 3471 } 3472 3473 void 3474 SymbolFileDWARF::ParseFunctions (const DIEArray &die_offsets, 3475 SymbolContextList& sc_list) 3476 { 3477 const size_t num_matches = die_offsets.size(); 3478 if (num_matches) 3479 { 3480 SymbolContext sc; 3481 3482 DWARFCompileUnit* dwarf_cu = NULL; 3483 for (size_t i=0; i<num_matches; ++i) 3484 { 3485 const dw_offset_t die_offset = die_offsets[i]; 3486 ResolveFunction (die_offset, dwarf_cu, sc_list); 3487 } 3488 } 3489 } 3490 3491 bool 3492 SymbolFileDWARF::FunctionDieMatchesPartialName (const DWARFDebugInfoEntry* die, 3493 const DWARFCompileUnit *dwarf_cu, 3494 uint32_t name_type_mask, 3495 const char *partial_name, 3496 const char *base_name_start, 3497 const char *base_name_end) 3498 { 3499 // If we are looking only for methods, throw away all the ones that are or aren't in C++ classes: 3500 if (name_type_mask == eFunctionNameTypeMethod || name_type_mask == eFunctionNameTypeBase) 3501 { 3502 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIEOffset(die->GetOffset()); 3503 if (!containing_decl_ctx) 3504 return false; 3505 3506 bool is_cxx_method = DeclKindIsCXXClass(containing_decl_ctx->getDeclKind()); 3507 3508 if (name_type_mask == eFunctionNameTypeMethod) 3509 { 3510 if (is_cxx_method == false) 3511 return false; 3512 } 3513 3514 if (name_type_mask == eFunctionNameTypeBase) 3515 { 3516 if (is_cxx_method == true) 3517 return false; 3518 } 3519 } 3520 3521 // Now we need to check whether the name we got back for this type matches the extra specifications 3522 // that were in the name we're looking up: 3523 if (base_name_start != partial_name || *base_name_end != '\0') 3524 { 3525 // First see if the stuff to the left matches the full name. To do that let's see if 3526 // we can pull out the mips linkage name attribute: 3527 3528 Mangled best_name; 3529 DWARFDebugInfoEntry::Attributes attributes; 3530 DWARFFormValue form_value; 3531 die->GetAttributes(this, dwarf_cu, NULL, attributes); 3532 uint32_t idx = attributes.FindAttributeIndex(DW_AT_MIPS_linkage_name); 3533 if (idx == UINT32_MAX) 3534 idx = attributes.FindAttributeIndex(DW_AT_linkage_name); 3535 if (idx != UINT32_MAX) 3536 { 3537 if (attributes.ExtractFormValueAtIndex(this, idx, form_value)) 3538 { 3539 const char *mangled_name = form_value.AsCString(&get_debug_str_data()); 3540 if (mangled_name) 3541 best_name.SetValue (ConstString(mangled_name), true); 3542 } 3543 } 3544 3545 if (!best_name) 3546 { 3547 idx = attributes.FindAttributeIndex(DW_AT_name); 3548 if (idx != UINT32_MAX && attributes.ExtractFormValueAtIndex(this, idx, form_value)) 3549 { 3550 const char *name = form_value.AsCString(&get_debug_str_data()); 3551 best_name.SetValue (ConstString(name), false); 3552 } 3553 } 3554 3555 if (best_name.GetDemangledName()) 3556 { 3557 const char *demangled = best_name.GetDemangledName().GetCString(); 3558 if (demangled) 3559 { 3560 std::string name_no_parens(partial_name, base_name_end - partial_name); 3561 const char *partial_in_demangled = strstr (demangled, name_no_parens.c_str()); 3562 if (partial_in_demangled == NULL) 3563 return false; 3564 else 3565 { 3566 // Sort out the case where our name is something like "Process::Destroy" and the match is 3567 // "SBProcess::Destroy" - that shouldn't be a match. We should really always match on 3568 // namespace boundaries... 3569 3570 if (partial_name[0] == ':' && partial_name[1] == ':') 3571 { 3572 // The partial name was already on a namespace boundary so all matches are good. 3573 return true; 3574 } 3575 else if (partial_in_demangled == demangled) 3576 { 3577 // They both start the same, so this is an good match. 3578 return true; 3579 } 3580 else 3581 { 3582 if (partial_in_demangled - demangled == 1) 3583 { 3584 // Only one character difference, can't be a namespace boundary... 3585 return false; 3586 } 3587 else if (*(partial_in_demangled - 1) == ':' && *(partial_in_demangled - 2) == ':') 3588 { 3589 // We are on a namespace boundary, so this is also good. 3590 return true; 3591 } 3592 else 3593 return false; 3594 } 3595 } 3596 } 3597 } 3598 } 3599 3600 return true; 3601 } 3602 3603 uint32_t 3604 SymbolFileDWARF::FindFunctions (const ConstString &name, 3605 const lldb_private::ClangNamespaceDecl *namespace_decl, 3606 uint32_t name_type_mask, 3607 bool include_inlines, 3608 bool append, 3609 SymbolContextList& sc_list) 3610 { 3611 Timer scoped_timer (__PRETTY_FUNCTION__, 3612 "SymbolFileDWARF::FindFunctions (name = '%s')", 3613 name.AsCString()); 3614 3615 // eFunctionNameTypeAuto should be pre-resolved by a call to Module::PrepareForFunctionNameLookup() 3616 assert ((name_type_mask & eFunctionNameTypeAuto) == 0); 3617 3618 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3619 3620 if (log) 3621 { 3622 GetObjectFile()->GetModule()->LogMessage (log, 3623 "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list)", 3624 name.GetCString(), 3625 name_type_mask, 3626 append); 3627 } 3628 3629 // If we aren't appending the results to this list, then clear the list 3630 if (!append) 3631 sc_list.Clear(); 3632 3633 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) 3634 return 0; 3635 3636 // If name is empty then we won't find anything. 3637 if (name.IsEmpty()) 3638 return 0; 3639 3640 // Remember how many sc_list are in the list before we search in case 3641 // we are appending the results to a variable list. 3642 3643 const char *name_cstr = name.GetCString(); 3644 3645 const uint32_t original_size = sc_list.GetSize(); 3646 3647 DWARFDebugInfo* info = DebugInfo(); 3648 if (info == NULL) 3649 return 0; 3650 3651 DWARFCompileUnit *dwarf_cu = NULL; 3652 std::set<const DWARFDebugInfoEntry *> resolved_dies; 3653 if (m_using_apple_tables) 3654 { 3655 if (m_apple_names_ap.get()) 3656 { 3657 3658 DIEArray die_offsets; 3659 3660 uint32_t num_matches = 0; 3661 3662 if (name_type_mask & eFunctionNameTypeFull) 3663 { 3664 // If they asked for the full name, match what they typed. At some point we may 3665 // want to canonicalize this (strip double spaces, etc. For now, we just add all the 3666 // dies that we find by exact match. 3667 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets); 3668 for (uint32_t i = 0; i < num_matches; i++) 3669 { 3670 const dw_offset_t die_offset = die_offsets[i]; 3671 const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3672 if (die) 3673 { 3674 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 3675 continue; 3676 3677 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine) 3678 continue; 3679 3680 if (resolved_dies.find(die) == resolved_dies.end()) 3681 { 3682 if (ResolveFunction (dwarf_cu, die, sc_list)) 3683 resolved_dies.insert(die); 3684 } 3685 } 3686 else 3687 { 3688 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')", 3689 die_offset, name_cstr); 3690 } 3691 } 3692 } 3693 3694 if (name_type_mask & eFunctionNameTypeSelector) 3695 { 3696 if (namespace_decl && *namespace_decl) 3697 return 0; // no selectors in namespaces 3698 3699 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets); 3700 // Now make sure these are actually ObjC methods. In this case we can simply look up the name, 3701 // and if it is an ObjC method name, we're good. 3702 3703 for (uint32_t i = 0; i < num_matches; i++) 3704 { 3705 const dw_offset_t die_offset = die_offsets[i]; 3706 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3707 if (die) 3708 { 3709 const char *die_name = die->GetName(this, dwarf_cu); 3710 if (ObjCLanguageRuntime::IsPossibleObjCMethodName(die_name)) 3711 { 3712 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine) 3713 continue; 3714 3715 if (resolved_dies.find(die) == resolved_dies.end()) 3716 { 3717 if (ResolveFunction (dwarf_cu, die, sc_list)) 3718 resolved_dies.insert(die); 3719 } 3720 } 3721 } 3722 else 3723 { 3724 GetObjectFile()->GetModule()->ReportError ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')", 3725 die_offset, name_cstr); 3726 } 3727 } 3728 die_offsets.clear(); 3729 } 3730 3731 if (((name_type_mask & eFunctionNameTypeMethod) && !namespace_decl) || name_type_mask & eFunctionNameTypeBase) 3732 { 3733 // The apple_names table stores just the "base name" of C++ methods in the table. So we have to 3734 // extract the base name, look that up, and if there is any other information in the name we were 3735 // passed in we have to post-filter based on that. 3736 3737 // FIXME: Arrange the logic above so that we don't calculate the base name twice: 3738 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets); 3739 3740 for (uint32_t i = 0; i < num_matches; i++) 3741 { 3742 const dw_offset_t die_offset = die_offsets[i]; 3743 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3744 if (die) 3745 { 3746 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine) 3747 continue; 3748 3749 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 3750 continue; 3751 3752 // If we get to here, the die is good, and we should add it: 3753 if (resolved_dies.find(die) == resolved_dies.end()) 3754 if (ResolveFunction (dwarf_cu, die, sc_list)) 3755 { 3756 bool keep_die = true; 3757 if ((name_type_mask & (eFunctionNameTypeBase|eFunctionNameTypeMethod)) != (eFunctionNameTypeBase|eFunctionNameTypeMethod)) 3758 { 3759 // We are looking for either basenames or methods, so we need to 3760 // trim out the ones we won't want by looking at the type 3761 SymbolContext sc; 3762 if (sc_list.GetLastContext(sc)) 3763 { 3764 if (sc.block) 3765 { 3766 // We have an inlined function 3767 } 3768 else if (sc.function) 3769 { 3770 Type *type = sc.function->GetType(); 3771 3772 if (type) 3773 { 3774 clang::DeclContext* decl_ctx = GetClangDeclContextContainingTypeUID (type->GetID()); 3775 if (decl_ctx->isRecord()) 3776 { 3777 if (name_type_mask & eFunctionNameTypeBase) 3778 { 3779 sc_list.RemoveContextAtIndex(sc_list.GetSize()-1); 3780 keep_die = false; 3781 } 3782 } 3783 else 3784 { 3785 if (name_type_mask & eFunctionNameTypeMethod) 3786 { 3787 sc_list.RemoveContextAtIndex(sc_list.GetSize()-1); 3788 keep_die = false; 3789 } 3790 } 3791 } 3792 else 3793 { 3794 GetObjectFile()->GetModule()->ReportWarning ("function at die offset 0x%8.8x had no function type", 3795 die_offset); 3796 } 3797 } 3798 } 3799 } 3800 if (keep_die) 3801 resolved_dies.insert(die); 3802 } 3803 } 3804 else 3805 { 3806 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')", 3807 die_offset, name_cstr); 3808 } 3809 } 3810 die_offsets.clear(); 3811 } 3812 } 3813 } 3814 else 3815 { 3816 3817 // Index the DWARF if we haven't already 3818 if (!m_indexed) 3819 Index (); 3820 3821 if (name_type_mask & eFunctionNameTypeFull) 3822 { 3823 FindFunctions (name, m_function_fullname_index, sc_list); 3824 3825 // FIXME Temporary workaround for global/anonymous namespace 3826 // functions on FreeBSD and Linux 3827 #if defined (__FreeBSD__) || defined (__linux__) 3828 // If we didn't find any functions in the global namespace try 3829 // looking in the basename index but ignore any returned 3830 // functions that have a namespace (ie. mangled names starting with 3831 // '_ZN') but keep functions which have an anonymous namespace 3832 if (sc_list.GetSize() == 0) 3833 { 3834 SymbolContextList temp_sc_list; 3835 FindFunctions (name, m_function_basename_index, temp_sc_list); 3836 if (!namespace_decl) 3837 { 3838 SymbolContext sc; 3839 for (uint32_t i = 0; i < temp_sc_list.GetSize(); i++) 3840 { 3841 if (temp_sc_list.GetContextAtIndex(i, sc)) 3842 { 3843 ConstString mangled_name = sc.GetFunctionName(Mangled::ePreferMangled); 3844 ConstString demangled_name = sc.GetFunctionName(Mangled::ePreferDemangled); 3845 if (strncmp(mangled_name.GetCString(), "_ZN", 3) || 3846 !strncmp(demangled_name.GetCString(), "(anonymous namespace)", 21)) 3847 { 3848 sc_list.Append(sc); 3849 } 3850 } 3851 } 3852 } 3853 } 3854 #endif 3855 } 3856 DIEArray die_offsets; 3857 DWARFCompileUnit *dwarf_cu = NULL; 3858 3859 if (name_type_mask & eFunctionNameTypeBase) 3860 { 3861 uint32_t num_base = m_function_basename_index.Find(name, die_offsets); 3862 for (uint32_t i = 0; i < num_base; i++) 3863 { 3864 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu); 3865 if (die) 3866 { 3867 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine) 3868 continue; 3869 3870 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 3871 continue; 3872 3873 // If we get to here, the die is good, and we should add it: 3874 if (resolved_dies.find(die) == resolved_dies.end()) 3875 { 3876 if (ResolveFunction (dwarf_cu, die, sc_list)) 3877 resolved_dies.insert(die); 3878 } 3879 } 3880 } 3881 die_offsets.clear(); 3882 } 3883 3884 if (name_type_mask & eFunctionNameTypeMethod) 3885 { 3886 if (namespace_decl && *namespace_decl) 3887 return 0; // no methods in namespaces 3888 3889 uint32_t num_base = m_function_method_index.Find(name, die_offsets); 3890 { 3891 for (uint32_t i = 0; i < num_base; i++) 3892 { 3893 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu); 3894 if (die) 3895 { 3896 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine) 3897 continue; 3898 3899 // If we get to here, the die is good, and we should add it: 3900 if (resolved_dies.find(die) == resolved_dies.end()) 3901 { 3902 if (ResolveFunction (dwarf_cu, die, sc_list)) 3903 resolved_dies.insert(die); 3904 } 3905 } 3906 } 3907 } 3908 die_offsets.clear(); 3909 } 3910 3911 if ((name_type_mask & eFunctionNameTypeSelector) && (!namespace_decl || !*namespace_decl)) 3912 { 3913 FindFunctions (name, m_function_selector_index, sc_list); 3914 } 3915 3916 } 3917 3918 // Return the number of variable that were appended to the list 3919 const uint32_t num_matches = sc_list.GetSize() - original_size; 3920 3921 if (log && num_matches > 0) 3922 { 3923 GetObjectFile()->GetModule()->LogMessage (log, 3924 "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list) => %u", 3925 name.GetCString(), 3926 name_type_mask, 3927 append, 3928 num_matches); 3929 } 3930 return num_matches; 3931 } 3932 3933 uint32_t 3934 SymbolFileDWARF::FindFunctions(const RegularExpression& regex, bool include_inlines, bool append, SymbolContextList& sc_list) 3935 { 3936 Timer scoped_timer (__PRETTY_FUNCTION__, 3937 "SymbolFileDWARF::FindFunctions (regex = '%s')", 3938 regex.GetText()); 3939 3940 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3941 3942 if (log) 3943 { 3944 GetObjectFile()->GetModule()->LogMessage (log, 3945 "SymbolFileDWARF::FindFunctions (regex=\"%s\", append=%u, sc_list)", 3946 regex.GetText(), 3947 append); 3948 } 3949 3950 3951 // If we aren't appending the results to this list, then clear the list 3952 if (!append) 3953 sc_list.Clear(); 3954 3955 // Remember how many sc_list are in the list before we search in case 3956 // we are appending the results to a variable list. 3957 uint32_t original_size = sc_list.GetSize(); 3958 3959 if (m_using_apple_tables) 3960 { 3961 if (m_apple_names_ap.get()) 3962 FindFunctions (regex, *m_apple_names_ap, sc_list); 3963 } 3964 else 3965 { 3966 // Index the DWARF if we haven't already 3967 if (!m_indexed) 3968 Index (); 3969 3970 FindFunctions (regex, m_function_basename_index, sc_list); 3971 3972 FindFunctions (regex, m_function_fullname_index, sc_list); 3973 } 3974 3975 // Return the number of variable that were appended to the list 3976 return sc_list.GetSize() - original_size; 3977 } 3978 3979 uint32_t 3980 SymbolFileDWARF::FindTypes (const SymbolContext& sc, 3981 const ConstString &name, 3982 const lldb_private::ClangNamespaceDecl *namespace_decl, 3983 bool append, 3984 uint32_t max_matches, 3985 TypeList& types) 3986 { 3987 DWARFDebugInfo* info = DebugInfo(); 3988 if (info == NULL) 3989 return 0; 3990 3991 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3992 3993 if (log) 3994 { 3995 if (namespace_decl) 3996 GetObjectFile()->GetModule()->LogMessage (log, 3997 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list)", 3998 name.GetCString(), 3999 static_cast<void*>(namespace_decl->GetNamespaceDecl()), 4000 namespace_decl->GetQualifiedName().c_str(), 4001 append, max_matches); 4002 else 4003 GetObjectFile()->GetModule()->LogMessage (log, 4004 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list)", 4005 name.GetCString(), append, 4006 max_matches); 4007 } 4008 4009 // If we aren't appending the results to this list, then clear the list 4010 if (!append) 4011 types.Clear(); 4012 4013 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) 4014 return 0; 4015 4016 DIEArray die_offsets; 4017 4018 if (m_using_apple_tables) 4019 { 4020 if (m_apple_types_ap.get()) 4021 { 4022 const char *name_cstr = name.GetCString(); 4023 m_apple_types_ap->FindByName (name_cstr, die_offsets); 4024 } 4025 } 4026 else 4027 { 4028 if (!m_indexed) 4029 Index (); 4030 4031 m_type_index.Find (name, die_offsets); 4032 } 4033 4034 const size_t num_die_matches = die_offsets.size(); 4035 4036 if (num_die_matches) 4037 { 4038 const uint32_t initial_types_size = types.GetSize(); 4039 DWARFCompileUnit* dwarf_cu = NULL; 4040 const DWARFDebugInfoEntry* die = NULL; 4041 DWARFDebugInfo* debug_info = DebugInfo(); 4042 for (size_t i=0; i<num_die_matches; ++i) 4043 { 4044 const dw_offset_t die_offset = die_offsets[i]; 4045 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 4046 4047 if (die) 4048 { 4049 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 4050 continue; 4051 4052 Type *matching_type = ResolveType (dwarf_cu, die); 4053 if (matching_type) 4054 { 4055 // We found a type pointer, now find the shared pointer form our type list 4056 types.InsertUnique (matching_type->shared_from_this()); 4057 if (types.GetSize() >= max_matches) 4058 break; 4059 } 4060 } 4061 else 4062 { 4063 if (m_using_apple_tables) 4064 { 4065 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n", 4066 die_offset, name.GetCString()); 4067 } 4068 } 4069 4070 } 4071 const uint32_t num_matches = types.GetSize() - initial_types_size; 4072 if (log && num_matches) 4073 { 4074 if (namespace_decl) 4075 { 4076 GetObjectFile()->GetModule()->LogMessage (log, 4077 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list) => %u", 4078 name.GetCString(), 4079 static_cast<void*>(namespace_decl->GetNamespaceDecl()), 4080 namespace_decl->GetQualifiedName().c_str(), 4081 append, max_matches, 4082 num_matches); 4083 } 4084 else 4085 { 4086 GetObjectFile()->GetModule()->LogMessage (log, 4087 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list) => %u", 4088 name.GetCString(), 4089 append, max_matches, 4090 num_matches); 4091 } 4092 } 4093 return num_matches; 4094 } 4095 return 0; 4096 } 4097 4098 4099 ClangNamespaceDecl 4100 SymbolFileDWARF::FindNamespace (const SymbolContext& sc, 4101 const ConstString &name, 4102 const lldb_private::ClangNamespaceDecl *parent_namespace_decl) 4103 { 4104 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 4105 4106 if (log) 4107 { 4108 GetObjectFile()->GetModule()->LogMessage (log, 4109 "SymbolFileDWARF::FindNamespace (sc, name=\"%s\")", 4110 name.GetCString()); 4111 } 4112 4113 if (!NamespaceDeclMatchesThisSymbolFile(parent_namespace_decl)) 4114 return ClangNamespaceDecl(); 4115 4116 ClangNamespaceDecl namespace_decl; 4117 DWARFDebugInfo* info = DebugInfo(); 4118 if (info) 4119 { 4120 DIEArray die_offsets; 4121 4122 // Index if we already haven't to make sure the compile units 4123 // get indexed and make their global DIE index list 4124 if (m_using_apple_tables) 4125 { 4126 if (m_apple_namespaces_ap.get()) 4127 { 4128 const char *name_cstr = name.GetCString(); 4129 m_apple_namespaces_ap->FindByName (name_cstr, die_offsets); 4130 } 4131 } 4132 else 4133 { 4134 if (!m_indexed) 4135 Index (); 4136 4137 m_namespace_index.Find (name, die_offsets); 4138 } 4139 4140 DWARFCompileUnit* dwarf_cu = NULL; 4141 const DWARFDebugInfoEntry* die = NULL; 4142 const size_t num_matches = die_offsets.size(); 4143 if (num_matches) 4144 { 4145 DWARFDebugInfo* debug_info = DebugInfo(); 4146 for (size_t i=0; i<num_matches; ++i) 4147 { 4148 const dw_offset_t die_offset = die_offsets[i]; 4149 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 4150 4151 if (die) 4152 { 4153 if (parent_namespace_decl && !DIEIsInNamespace (parent_namespace_decl, dwarf_cu, die)) 4154 continue; 4155 4156 clang::NamespaceDecl *clang_namespace_decl = ResolveNamespaceDIE (dwarf_cu, die); 4157 if (clang_namespace_decl) 4158 { 4159 namespace_decl.SetASTContext (GetClangASTContext().getASTContext()); 4160 namespace_decl.SetNamespaceDecl (clang_namespace_decl); 4161 break; 4162 } 4163 } 4164 else 4165 { 4166 if (m_using_apple_tables) 4167 { 4168 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_namespaces accelerator table had bad die 0x%8.8x for '%s')\n", 4169 die_offset, name.GetCString()); 4170 } 4171 } 4172 4173 } 4174 } 4175 } 4176 if (log && namespace_decl.GetNamespaceDecl()) 4177 { 4178 GetObjectFile()->GetModule()->LogMessage (log, 4179 "SymbolFileDWARF::FindNamespace (sc, name=\"%s\") => clang::NamespaceDecl(%p) \"%s\"", 4180 name.GetCString(), 4181 static_cast<const void*>(namespace_decl.GetNamespaceDecl()), 4182 namespace_decl.GetQualifiedName().c_str()); 4183 } 4184 4185 return namespace_decl; 4186 } 4187 4188 uint32_t 4189 SymbolFileDWARF::FindTypes(std::vector<dw_offset_t> die_offsets, uint32_t max_matches, TypeList& types) 4190 { 4191 // Remember how many sc_list are in the list before we search in case 4192 // we are appending the results to a variable list. 4193 uint32_t original_size = types.GetSize(); 4194 4195 const uint32_t num_die_offsets = die_offsets.size(); 4196 // Parse all of the types we found from the pubtypes matches 4197 uint32_t i; 4198 uint32_t num_matches = 0; 4199 for (i = 0; i < num_die_offsets; ++i) 4200 { 4201 Type *matching_type = ResolveTypeUID (die_offsets[i]); 4202 if (matching_type) 4203 { 4204 // We found a type pointer, now find the shared pointer form our type list 4205 types.InsertUnique (matching_type->shared_from_this()); 4206 ++num_matches; 4207 if (num_matches >= max_matches) 4208 break; 4209 } 4210 } 4211 4212 // Return the number of variable that were appended to the list 4213 return types.GetSize() - original_size; 4214 } 4215 4216 4217 size_t 4218 SymbolFileDWARF::ParseChildParameters (const SymbolContext& sc, 4219 clang::DeclContext *containing_decl_ctx, 4220 DWARFCompileUnit* dwarf_cu, 4221 const DWARFDebugInfoEntry *parent_die, 4222 bool skip_artificial, 4223 bool &is_static, 4224 bool &is_variadic, 4225 TypeList* type_list, 4226 std::vector<ClangASTType>& function_param_types, 4227 std::vector<clang::ParmVarDecl*>& function_param_decls, 4228 unsigned &type_quals) // , 4229 // ClangASTContext::TemplateParameterInfos &template_param_infos)) 4230 { 4231 if (parent_die == NULL) 4232 return 0; 4233 4234 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64()); 4235 4236 size_t arg_idx = 0; 4237 const DWARFDebugInfoEntry *die; 4238 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 4239 { 4240 dw_tag_t tag = die->Tag(); 4241 switch (tag) 4242 { 4243 case DW_TAG_formal_parameter: 4244 { 4245 DWARFDebugInfoEntry::Attributes attributes; 4246 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); 4247 if (num_attributes > 0) 4248 { 4249 const char *name = NULL; 4250 Declaration decl; 4251 dw_offset_t param_type_die_offset = DW_INVALID_OFFSET; 4252 bool is_artificial = false; 4253 // one of None, Auto, Register, Extern, Static, PrivateExtern 4254 4255 clang::StorageClass storage = clang::SC_None; 4256 uint32_t i; 4257 for (i=0; i<num_attributes; ++i) 4258 { 4259 const dw_attr_t attr = attributes.AttributeAtIndex(i); 4260 DWARFFormValue form_value; 4261 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 4262 { 4263 switch (attr) 4264 { 4265 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 4266 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 4267 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 4268 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; 4269 case DW_AT_type: param_type_die_offset = form_value.Reference(); break; 4270 case DW_AT_artificial: is_artificial = form_value.Boolean(); break; 4271 case DW_AT_location: 4272 // if (form_value.BlockData()) 4273 // { 4274 // const DWARFDataExtractor& debug_info_data = debug_info(); 4275 // uint32_t block_length = form_value.Unsigned(); 4276 // DWARFDataExtractor location(debug_info_data, form_value.BlockData() - debug_info_data.GetDataStart(), block_length); 4277 // } 4278 // else 4279 // { 4280 // } 4281 // break; 4282 case DW_AT_const_value: 4283 case DW_AT_default_value: 4284 case DW_AT_description: 4285 case DW_AT_endianity: 4286 case DW_AT_is_optional: 4287 case DW_AT_segment: 4288 case DW_AT_variable_parameter: 4289 default: 4290 case DW_AT_abstract_origin: 4291 case DW_AT_sibling: 4292 break; 4293 } 4294 } 4295 } 4296 4297 bool skip = false; 4298 if (skip_artificial) 4299 { 4300 if (is_artificial) 4301 { 4302 // In order to determine if a C++ member function is 4303 // "const" we have to look at the const-ness of "this"... 4304 // Ugly, but that 4305 if (arg_idx == 0) 4306 { 4307 if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind())) 4308 { 4309 // Often times compilers omit the "this" name for the 4310 // specification DIEs, so we can't rely upon the name 4311 // being in the formal parameter DIE... 4312 if (name == NULL || ::strcmp(name, "this")==0) 4313 { 4314 Type *this_type = ResolveTypeUID (param_type_die_offset); 4315 if (this_type) 4316 { 4317 uint32_t encoding_mask = this_type->GetEncodingMask(); 4318 if (encoding_mask & Type::eEncodingIsPointerUID) 4319 { 4320 is_static = false; 4321 4322 if (encoding_mask & (1u << Type::eEncodingIsConstUID)) 4323 type_quals |= clang::Qualifiers::Const; 4324 if (encoding_mask & (1u << Type::eEncodingIsVolatileUID)) 4325 type_quals |= clang::Qualifiers::Volatile; 4326 } 4327 } 4328 } 4329 } 4330 } 4331 skip = true; 4332 } 4333 else 4334 { 4335 4336 // HACK: Objective C formal parameters "self" and "_cmd" 4337 // are not marked as artificial in the DWARF... 4338 CompileUnit *comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 4339 if (comp_unit) 4340 { 4341 switch (comp_unit->GetLanguage()) 4342 { 4343 case eLanguageTypeObjC: 4344 case eLanguageTypeObjC_plus_plus: 4345 if (name && name[0] && (strcmp (name, "self") == 0 || strcmp (name, "_cmd") == 0)) 4346 skip = true; 4347 break; 4348 default: 4349 break; 4350 } 4351 } 4352 } 4353 } 4354 4355 if (!skip) 4356 { 4357 Type *type = ResolveTypeUID(param_type_die_offset); 4358 if (type) 4359 { 4360 function_param_types.push_back (type->GetClangForwardType()); 4361 4362 clang::ParmVarDecl *param_var_decl = GetClangASTContext().CreateParameterDeclaration (name, 4363 type->GetClangForwardType(), 4364 storage); 4365 assert(param_var_decl); 4366 function_param_decls.push_back(param_var_decl); 4367 4368 GetClangASTContext().SetMetadataAsUserID (param_var_decl, MakeUserID(die->GetOffset())); 4369 } 4370 } 4371 } 4372 arg_idx++; 4373 } 4374 break; 4375 4376 case DW_TAG_unspecified_parameters: 4377 is_variadic = true; 4378 break; 4379 4380 case DW_TAG_template_type_parameter: 4381 case DW_TAG_template_value_parameter: 4382 // The one caller of this was never using the template_param_infos, 4383 // and the local variable was taking up a large amount of stack space 4384 // in SymbolFileDWARF::ParseType() so this was removed. If we ever need 4385 // the template params back, we can add them back. 4386 // ParseTemplateDIE (dwarf_cu, die, template_param_infos); 4387 break; 4388 4389 default: 4390 break; 4391 } 4392 } 4393 return arg_idx; 4394 } 4395 4396 size_t 4397 SymbolFileDWARF::ParseChildEnumerators 4398 ( 4399 const SymbolContext& sc, 4400 lldb_private::ClangASTType &clang_type, 4401 bool is_signed, 4402 uint32_t enumerator_byte_size, 4403 DWARFCompileUnit* dwarf_cu, 4404 const DWARFDebugInfoEntry *parent_die 4405 ) 4406 { 4407 if (parent_die == NULL) 4408 return 0; 4409 4410 size_t enumerators_added = 0; 4411 const DWARFDebugInfoEntry *die; 4412 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64()); 4413 4414 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 4415 { 4416 const dw_tag_t tag = die->Tag(); 4417 if (tag == DW_TAG_enumerator) 4418 { 4419 DWARFDebugInfoEntry::Attributes attributes; 4420 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); 4421 if (num_child_attributes > 0) 4422 { 4423 const char *name = NULL; 4424 bool got_value = false; 4425 int64_t enum_value = 0; 4426 Declaration decl; 4427 4428 uint32_t i; 4429 for (i=0; i<num_child_attributes; ++i) 4430 { 4431 const dw_attr_t attr = attributes.AttributeAtIndex(i); 4432 DWARFFormValue form_value; 4433 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 4434 { 4435 switch (attr) 4436 { 4437 case DW_AT_const_value: 4438 got_value = true; 4439 if (is_signed) 4440 enum_value = form_value.Signed(); 4441 else 4442 enum_value = form_value.Unsigned(); 4443 break; 4444 4445 case DW_AT_name: 4446 name = form_value.AsCString(&get_debug_str_data()); 4447 break; 4448 4449 case DW_AT_description: 4450 default: 4451 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 4452 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 4453 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 4454 case DW_AT_sibling: 4455 break; 4456 } 4457 } 4458 } 4459 4460 if (name && name[0] && got_value) 4461 { 4462 clang_type.AddEnumerationValueToEnumerationType (clang_type.GetEnumerationIntegerType(), 4463 decl, 4464 name, 4465 enum_value, 4466 enumerator_byte_size * 8); 4467 ++enumerators_added; 4468 } 4469 } 4470 } 4471 } 4472 return enumerators_added; 4473 } 4474 4475 void 4476 SymbolFileDWARF::ParseChildArrayInfo 4477 ( 4478 const SymbolContext& sc, 4479 DWARFCompileUnit* dwarf_cu, 4480 const DWARFDebugInfoEntry *parent_die, 4481 int64_t& first_index, 4482 std::vector<uint64_t>& element_orders, 4483 uint32_t& byte_stride, 4484 uint32_t& bit_stride 4485 ) 4486 { 4487 if (parent_die == NULL) 4488 return; 4489 4490 const DWARFDebugInfoEntry *die; 4491 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64()); 4492 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 4493 { 4494 const dw_tag_t tag = die->Tag(); 4495 switch (tag) 4496 { 4497 case DW_TAG_subrange_type: 4498 { 4499 DWARFDebugInfoEntry::Attributes attributes; 4500 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); 4501 if (num_child_attributes > 0) 4502 { 4503 uint64_t num_elements = 0; 4504 uint64_t lower_bound = 0; 4505 uint64_t upper_bound = 0; 4506 bool upper_bound_valid = false; 4507 uint32_t i; 4508 for (i=0; i<num_child_attributes; ++i) 4509 { 4510 const dw_attr_t attr = attributes.AttributeAtIndex(i); 4511 DWARFFormValue form_value; 4512 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 4513 { 4514 switch (attr) 4515 { 4516 case DW_AT_name: 4517 break; 4518 4519 case DW_AT_count: 4520 num_elements = form_value.Unsigned(); 4521 break; 4522 4523 case DW_AT_bit_stride: 4524 bit_stride = form_value.Unsigned(); 4525 break; 4526 4527 case DW_AT_byte_stride: 4528 byte_stride = form_value.Unsigned(); 4529 break; 4530 4531 case DW_AT_lower_bound: 4532 lower_bound = form_value.Unsigned(); 4533 break; 4534 4535 case DW_AT_upper_bound: 4536 upper_bound_valid = true; 4537 upper_bound = form_value.Unsigned(); 4538 break; 4539 4540 default: 4541 case DW_AT_abstract_origin: 4542 case DW_AT_accessibility: 4543 case DW_AT_allocated: 4544 case DW_AT_associated: 4545 case DW_AT_data_location: 4546 case DW_AT_declaration: 4547 case DW_AT_description: 4548 case DW_AT_sibling: 4549 case DW_AT_threads_scaled: 4550 case DW_AT_type: 4551 case DW_AT_visibility: 4552 break; 4553 } 4554 } 4555 } 4556 4557 if (num_elements == 0) 4558 { 4559 if (upper_bound_valid && upper_bound >= lower_bound) 4560 num_elements = upper_bound - lower_bound + 1; 4561 } 4562 4563 element_orders.push_back (num_elements); 4564 } 4565 } 4566 break; 4567 } 4568 } 4569 } 4570 4571 TypeSP 4572 SymbolFileDWARF::GetTypeForDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry* die) 4573 { 4574 TypeSP type_sp; 4575 if (die != NULL) 4576 { 4577 assert(dwarf_cu != NULL); 4578 Type *type_ptr = m_die_to_type.lookup (die); 4579 if (type_ptr == NULL) 4580 { 4581 CompileUnit* lldb_cu = GetCompUnitForDWARFCompUnit(dwarf_cu); 4582 assert (lldb_cu); 4583 SymbolContext sc(lldb_cu); 4584 type_sp = ParseType(sc, dwarf_cu, die, NULL); 4585 } 4586 else if (type_ptr != DIE_IS_BEING_PARSED) 4587 { 4588 // Grab the existing type from the master types lists 4589 type_sp = type_ptr->shared_from_this(); 4590 } 4591 4592 } 4593 return type_sp; 4594 } 4595 4596 clang::DeclContext * 4597 SymbolFileDWARF::GetClangDeclContextContainingDIEOffset (dw_offset_t die_offset) 4598 { 4599 if (die_offset != DW_INVALID_OFFSET) 4600 { 4601 DWARFCompileUnitSP cu_sp; 4602 const DWARFDebugInfoEntry* die = DebugInfo()->GetDIEPtr(die_offset, &cu_sp); 4603 return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL); 4604 } 4605 return NULL; 4606 } 4607 4608 clang::DeclContext * 4609 SymbolFileDWARF::GetClangDeclContextForDIEOffset (const SymbolContext &sc, dw_offset_t die_offset) 4610 { 4611 if (die_offset != DW_INVALID_OFFSET) 4612 { 4613 DWARFDebugInfo* debug_info = DebugInfo(); 4614 if (debug_info) 4615 { 4616 DWARFCompileUnitSP cu_sp; 4617 const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(die_offset, &cu_sp); 4618 if (die) 4619 return GetClangDeclContextForDIE (sc, cu_sp.get(), die); 4620 } 4621 } 4622 return NULL; 4623 } 4624 4625 clang::NamespaceDecl * 4626 SymbolFileDWARF::ResolveNamespaceDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry *die) 4627 { 4628 if (die && die->Tag() == DW_TAG_namespace) 4629 { 4630 // See if we already parsed this namespace DIE and associated it with a 4631 // uniqued namespace declaration 4632 clang::NamespaceDecl *namespace_decl = static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die]); 4633 if (namespace_decl) 4634 return namespace_decl; 4635 else 4636 { 4637 const char *namespace_name = die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL); 4638 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, NULL); 4639 namespace_decl = GetClangASTContext().GetUniqueNamespaceDeclaration (namespace_name, containing_decl_ctx); 4640 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 4641 if (log) 4642 { 4643 if (namespace_name) 4644 { 4645 GetObjectFile()->GetModule()->LogMessage (log, 4646 "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace with DW_AT_name(\"%s\") => clang::NamespaceDecl *%p (original = %p)", 4647 static_cast<void*>(GetClangASTContext().getASTContext()), 4648 MakeUserID(die->GetOffset()), 4649 namespace_name, 4650 static_cast<void*>(namespace_decl), 4651 static_cast<void*>(namespace_decl->getOriginalNamespace())); 4652 } 4653 else 4654 { 4655 GetObjectFile()->GetModule()->LogMessage (log, 4656 "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p (original = %p)", 4657 static_cast<void*>(GetClangASTContext().getASTContext()), 4658 MakeUserID(die->GetOffset()), 4659 static_cast<void*>(namespace_decl), 4660 static_cast<void*>(namespace_decl->getOriginalNamespace())); 4661 } 4662 } 4663 4664 if (namespace_decl) 4665 LinkDeclContextToDIE((clang::DeclContext*)namespace_decl, die); 4666 return namespace_decl; 4667 } 4668 } 4669 return NULL; 4670 } 4671 4672 clang::DeclContext * 4673 SymbolFileDWARF::GetClangDeclContextForDIE (const SymbolContext &sc, DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) 4674 { 4675 clang::DeclContext *clang_decl_ctx = GetCachedClangDeclContextForDIE (die); 4676 if (clang_decl_ctx) 4677 return clang_decl_ctx; 4678 // If this DIE has a specification, or an abstract origin, then trace to those. 4679 4680 dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET); 4681 if (die_offset != DW_INVALID_OFFSET) 4682 return GetClangDeclContextForDIEOffset (sc, die_offset); 4683 4684 die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET); 4685 if (die_offset != DW_INVALID_OFFSET) 4686 return GetClangDeclContextForDIEOffset (sc, die_offset); 4687 4688 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 4689 if (log) 4690 GetObjectFile()->GetModule()->LogMessage(log, "SymbolFileDWARF::GetClangDeclContextForDIE (die = 0x%8.8x) %s '%s'", die->GetOffset(), DW_TAG_value_to_name(die->Tag()), die->GetName(this, cu)); 4691 // This is the DIE we want. Parse it, then query our map. 4692 bool assert_not_being_parsed = true; 4693 ResolveTypeUID (cu, die, assert_not_being_parsed); 4694 4695 clang_decl_ctx = GetCachedClangDeclContextForDIE (die); 4696 4697 return clang_decl_ctx; 4698 } 4699 4700 clang::DeclContext * 4701 SymbolFileDWARF::GetClangDeclContextContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die, const DWARFDebugInfoEntry **decl_ctx_die_copy) 4702 { 4703 if (m_clang_tu_decl == NULL) 4704 m_clang_tu_decl = GetClangASTContext().getASTContext()->getTranslationUnitDecl(); 4705 4706 const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die); 4707 4708 if (decl_ctx_die_copy) 4709 *decl_ctx_die_copy = decl_ctx_die; 4710 4711 if (decl_ctx_die) 4712 { 4713 4714 DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find (decl_ctx_die); 4715 if (pos != m_die_to_decl_ctx.end()) 4716 return pos->second; 4717 4718 switch (decl_ctx_die->Tag()) 4719 { 4720 case DW_TAG_compile_unit: 4721 return m_clang_tu_decl; 4722 4723 case DW_TAG_namespace: 4724 return ResolveNamespaceDIE (cu, decl_ctx_die); 4725 break; 4726 4727 case DW_TAG_structure_type: 4728 case DW_TAG_union_type: 4729 case DW_TAG_class_type: 4730 { 4731 Type* type = ResolveType (cu, decl_ctx_die); 4732 if (type) 4733 { 4734 clang::DeclContext *decl_ctx = type->GetClangForwardType().GetDeclContextForType (); 4735 if (decl_ctx) 4736 { 4737 LinkDeclContextToDIE (decl_ctx, decl_ctx_die); 4738 if (decl_ctx) 4739 return decl_ctx; 4740 } 4741 } 4742 } 4743 break; 4744 4745 default: 4746 break; 4747 } 4748 } 4749 return m_clang_tu_decl; 4750 } 4751 4752 4753 const DWARFDebugInfoEntry * 4754 SymbolFileDWARF::GetDeclContextDIEContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) 4755 { 4756 if (cu && die) 4757 { 4758 const DWARFDebugInfoEntry * const decl_die = die; 4759 4760 while (die != NULL) 4761 { 4762 // If this is the original DIE that we are searching for a declaration 4763 // for, then don't look in the cache as we don't want our own decl 4764 // context to be our decl context... 4765 if (decl_die != die) 4766 { 4767 switch (die->Tag()) 4768 { 4769 case DW_TAG_compile_unit: 4770 case DW_TAG_namespace: 4771 case DW_TAG_structure_type: 4772 case DW_TAG_union_type: 4773 case DW_TAG_class_type: 4774 return die; 4775 4776 default: 4777 break; 4778 } 4779 } 4780 4781 dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET); 4782 if (die_offset != DW_INVALID_OFFSET) 4783 { 4784 DWARFCompileUnit *spec_cu = cu; 4785 const DWARFDebugInfoEntry *spec_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &spec_cu); 4786 const DWARFDebugInfoEntry *spec_die_decl_ctx_die = GetDeclContextDIEContainingDIE (spec_cu, spec_die); 4787 if (spec_die_decl_ctx_die) 4788 return spec_die_decl_ctx_die; 4789 } 4790 4791 die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET); 4792 if (die_offset != DW_INVALID_OFFSET) 4793 { 4794 DWARFCompileUnit *abs_cu = cu; 4795 const DWARFDebugInfoEntry *abs_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &abs_cu); 4796 const DWARFDebugInfoEntry *abs_die_decl_ctx_die = GetDeclContextDIEContainingDIE (abs_cu, abs_die); 4797 if (abs_die_decl_ctx_die) 4798 return abs_die_decl_ctx_die; 4799 } 4800 4801 die = die->GetParent(); 4802 } 4803 } 4804 return NULL; 4805 } 4806 4807 4808 Symbol * 4809 SymbolFileDWARF::GetObjCClassSymbol (const ConstString &objc_class_name) 4810 { 4811 Symbol *objc_class_symbol = NULL; 4812 if (m_obj_file) 4813 { 4814 Symtab *symtab = m_obj_file->GetSymtab (); 4815 if (symtab) 4816 { 4817 objc_class_symbol = symtab->FindFirstSymbolWithNameAndType (objc_class_name, 4818 eSymbolTypeObjCClass, 4819 Symtab::eDebugNo, 4820 Symtab::eVisibilityAny); 4821 } 4822 } 4823 return objc_class_symbol; 4824 } 4825 4826 // Some compilers don't emit the DW_AT_APPLE_objc_complete_type attribute. If they don't 4827 // then we can end up looking through all class types for a complete type and never find 4828 // the full definition. We need to know if this attribute is supported, so we determine 4829 // this here and cache th result. We also need to worry about the debug map DWARF file 4830 // if we are doing darwin DWARF in .o file debugging. 4831 bool 4832 SymbolFileDWARF::Supports_DW_AT_APPLE_objc_complete_type (DWARFCompileUnit *cu) 4833 { 4834 if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate) 4835 { 4836 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo; 4837 if (cu && cu->Supports_DW_AT_APPLE_objc_complete_type()) 4838 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; 4839 else 4840 { 4841 DWARFDebugInfo* debug_info = DebugInfo(); 4842 const uint32_t num_compile_units = GetNumCompileUnits(); 4843 for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) 4844 { 4845 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx); 4846 if (dwarf_cu != cu && dwarf_cu->Supports_DW_AT_APPLE_objc_complete_type()) 4847 { 4848 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; 4849 break; 4850 } 4851 } 4852 } 4853 if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolNo && GetDebugMapSymfile ()) 4854 return m_debug_map_symfile->Supports_DW_AT_APPLE_objc_complete_type (this); 4855 } 4856 return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes; 4857 } 4858 4859 // This function can be used when a DIE is found that is a forward declaration 4860 // DIE and we want to try and find a type that has the complete definition. 4861 TypeSP 4862 SymbolFileDWARF::FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die, 4863 const ConstString &type_name, 4864 bool must_be_implementation) 4865 { 4866 4867 TypeSP type_sp; 4868 4869 if (!type_name || (must_be_implementation && !GetObjCClassSymbol (type_name))) 4870 return type_sp; 4871 4872 DIEArray die_offsets; 4873 4874 if (m_using_apple_tables) 4875 { 4876 if (m_apple_types_ap.get()) 4877 { 4878 const char *name_cstr = type_name.GetCString(); 4879 m_apple_types_ap->FindCompleteObjCClassByName (name_cstr, die_offsets, must_be_implementation); 4880 } 4881 } 4882 else 4883 { 4884 if (!m_indexed) 4885 Index (); 4886 4887 m_type_index.Find (type_name, die_offsets); 4888 } 4889 4890 const size_t num_matches = die_offsets.size(); 4891 4892 DWARFCompileUnit* type_cu = NULL; 4893 const DWARFDebugInfoEntry* type_die = NULL; 4894 if (num_matches) 4895 { 4896 DWARFDebugInfo* debug_info = DebugInfo(); 4897 for (size_t i=0; i<num_matches; ++i) 4898 { 4899 const dw_offset_t die_offset = die_offsets[i]; 4900 type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu); 4901 4902 if (type_die) 4903 { 4904 bool try_resolving_type = false; 4905 4906 // Don't try and resolve the DIE we are looking for with the DIE itself! 4907 if (type_die != die) 4908 { 4909 switch (type_die->Tag()) 4910 { 4911 case DW_TAG_class_type: 4912 case DW_TAG_structure_type: 4913 try_resolving_type = true; 4914 break; 4915 default: 4916 break; 4917 } 4918 } 4919 4920 if (try_resolving_type) 4921 { 4922 if (must_be_implementation && type_cu->Supports_DW_AT_APPLE_objc_complete_type()) 4923 try_resolving_type = type_die->GetAttributeValueAsUnsigned (this, type_cu, DW_AT_APPLE_objc_complete_type, 0); 4924 4925 if (try_resolving_type) 4926 { 4927 Type *resolved_type = ResolveType (type_cu, type_die, false); 4928 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) 4929 { 4930 DEBUG_PRINTF ("resolved 0x%8.8" PRIx64 " from %s to 0x%8.8" PRIx64 " (cu 0x%8.8" PRIx64 ")\n", 4931 MakeUserID(die->GetOffset()), 4932 m_obj_file->GetFileSpec().GetFilename().AsCString("<Unknown>"), 4933 MakeUserID(type_die->GetOffset()), 4934 MakeUserID(type_cu->GetOffset())); 4935 4936 if (die) 4937 m_die_to_type[die] = resolved_type; 4938 type_sp = resolved_type->shared_from_this(); 4939 break; 4940 } 4941 } 4942 } 4943 } 4944 else 4945 { 4946 if (m_using_apple_tables) 4947 { 4948 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n", 4949 die_offset, type_name.GetCString()); 4950 } 4951 } 4952 4953 } 4954 } 4955 return type_sp; 4956 } 4957 4958 4959 //---------------------------------------------------------------------- 4960 // This function helps to ensure that the declaration contexts match for 4961 // two different DIEs. Often times debug information will refer to a 4962 // forward declaration of a type (the equivalent of "struct my_struct;". 4963 // There will often be a declaration of that type elsewhere that has the 4964 // full definition. When we go looking for the full type "my_struct", we 4965 // will find one or more matches in the accelerator tables and we will 4966 // then need to make sure the type was in the same declaration context 4967 // as the original DIE. This function can efficiently compare two DIEs 4968 // and will return true when the declaration context matches, and false 4969 // when they don't. 4970 //---------------------------------------------------------------------- 4971 bool 4972 SymbolFileDWARF::DIEDeclContextsMatch (DWARFCompileUnit* cu1, const DWARFDebugInfoEntry *die1, 4973 DWARFCompileUnit* cu2, const DWARFDebugInfoEntry *die2) 4974 { 4975 if (die1 == die2) 4976 return true; 4977 4978 #if defined (LLDB_CONFIGURATION_DEBUG) 4979 // You can't and shouldn't call this function with a compile unit from 4980 // two different SymbolFileDWARF instances. 4981 assert (DebugInfo()->ContainsCompileUnit (cu1)); 4982 assert (DebugInfo()->ContainsCompileUnit (cu2)); 4983 #endif 4984 4985 DWARFDIECollection decl_ctx_1; 4986 DWARFDIECollection decl_ctx_2; 4987 //The declaration DIE stack is a stack of the declaration context 4988 // DIEs all the way back to the compile unit. If a type "T" is 4989 // declared inside a class "B", and class "B" is declared inside 4990 // a class "A" and class "A" is in a namespace "lldb", and the 4991 // namespace is in a compile unit, there will be a stack of DIEs: 4992 // 4993 // [0] DW_TAG_class_type for "B" 4994 // [1] DW_TAG_class_type for "A" 4995 // [2] DW_TAG_namespace for "lldb" 4996 // [3] DW_TAG_compile_unit for the source file. 4997 // 4998 // We grab both contexts and make sure that everything matches 4999 // all the way back to the compiler unit. 5000 5001 // First lets grab the decl contexts for both DIEs 5002 die1->GetDeclContextDIEs (this, cu1, decl_ctx_1); 5003 die2->GetDeclContextDIEs (this, cu2, decl_ctx_2); 5004 // Make sure the context arrays have the same size, otherwise 5005 // we are done 5006 const size_t count1 = decl_ctx_1.Size(); 5007 const size_t count2 = decl_ctx_2.Size(); 5008 if (count1 != count2) 5009 return false; 5010 5011 // Make sure the DW_TAG values match all the way back up the 5012 // compile unit. If they don't, then we are done. 5013 const DWARFDebugInfoEntry *decl_ctx_die1; 5014 const DWARFDebugInfoEntry *decl_ctx_die2; 5015 size_t i; 5016 for (i=0; i<count1; i++) 5017 { 5018 decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i); 5019 decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i); 5020 if (decl_ctx_die1->Tag() != decl_ctx_die2->Tag()) 5021 return false; 5022 } 5023 #if defined LLDB_CONFIGURATION_DEBUG 5024 5025 // Make sure the top item in the decl context die array is always 5026 // DW_TAG_compile_unit. If it isn't then something went wrong in 5027 // the DWARFDebugInfoEntry::GetDeclContextDIEs() function... 5028 assert (decl_ctx_1.GetDIEPtrAtIndex (count1 - 1)->Tag() == DW_TAG_compile_unit); 5029 5030 #endif 5031 // Always skip the compile unit when comparing by only iterating up to 5032 // "count - 1". Here we compare the names as we go. 5033 for (i=0; i<count1 - 1; i++) 5034 { 5035 decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i); 5036 decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i); 5037 const char *name1 = decl_ctx_die1->GetName(this, cu1); 5038 const char *name2 = decl_ctx_die2->GetName(this, cu2); 5039 // If the string was from a DW_FORM_strp, then the pointer will often 5040 // be the same! 5041 if (name1 == name2) 5042 continue; 5043 5044 // Name pointers are not equal, so only compare the strings 5045 // if both are not NULL. 5046 if (name1 && name2) 5047 { 5048 // If the strings don't compare, we are done... 5049 if (strcmp(name1, name2) != 0) 5050 return false; 5051 } 5052 else 5053 { 5054 // One name was NULL while the other wasn't 5055 return false; 5056 } 5057 } 5058 // We made it through all of the checks and the declaration contexts 5059 // are equal. 5060 return true; 5061 } 5062 5063 5064 TypeSP 5065 SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &dwarf_decl_ctx) 5066 { 5067 TypeSP type_sp; 5068 5069 const uint32_t dwarf_decl_ctx_count = dwarf_decl_ctx.GetSize(); 5070 if (dwarf_decl_ctx_count > 0) 5071 { 5072 const ConstString type_name(dwarf_decl_ctx[0].name); 5073 const dw_tag_t tag = dwarf_decl_ctx[0].tag; 5074 5075 if (type_name) 5076 { 5077 Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION|DWARF_LOG_LOOKUPS)); 5078 if (log) 5079 { 5080 GetObjectFile()->GetModule()->LogMessage (log, 5081 "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s')", 5082 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag), 5083 dwarf_decl_ctx.GetQualifiedName()); 5084 } 5085 5086 DIEArray die_offsets; 5087 5088 if (m_using_apple_tables) 5089 { 5090 if (m_apple_types_ap.get()) 5091 { 5092 const bool has_tag = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeTag); 5093 const bool has_qualified_name_hash = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeQualNameHash); 5094 if (has_tag && has_qualified_name_hash) 5095 { 5096 const char *qualified_name = dwarf_decl_ctx.GetQualifiedName(); 5097 const uint32_t qualified_name_hash = MappedHash::HashStringUsingDJB (qualified_name); 5098 if (log) 5099 GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTagAndQualifiedNameHash()"); 5100 m_apple_types_ap->FindByNameAndTagAndQualifiedNameHash (type_name.GetCString(), tag, qualified_name_hash, die_offsets); 5101 } 5102 else if (has_tag) 5103 { 5104 if (log) 5105 GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTag()"); 5106 m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), tag, die_offsets); 5107 } 5108 else 5109 { 5110 m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets); 5111 } 5112 } 5113 } 5114 else 5115 { 5116 if (!m_indexed) 5117 Index (); 5118 5119 m_type_index.Find (type_name, die_offsets); 5120 } 5121 5122 const size_t num_matches = die_offsets.size(); 5123 5124 5125 DWARFCompileUnit* type_cu = NULL; 5126 const DWARFDebugInfoEntry* type_die = NULL; 5127 if (num_matches) 5128 { 5129 DWARFDebugInfo* debug_info = DebugInfo(); 5130 for (size_t i=0; i<num_matches; ++i) 5131 { 5132 const dw_offset_t die_offset = die_offsets[i]; 5133 type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu); 5134 5135 if (type_die) 5136 { 5137 bool try_resolving_type = false; 5138 5139 // Don't try and resolve the DIE we are looking for with the DIE itself! 5140 const dw_tag_t type_tag = type_die->Tag(); 5141 // Make sure the tags match 5142 if (type_tag == tag) 5143 { 5144 // The tags match, lets try resolving this type 5145 try_resolving_type = true; 5146 } 5147 else 5148 { 5149 // The tags don't match, but we need to watch our for a 5150 // forward declaration for a struct and ("struct foo") 5151 // ends up being a class ("class foo { ... };") or 5152 // vice versa. 5153 switch (type_tag) 5154 { 5155 case DW_TAG_class_type: 5156 // We had a "class foo", see if we ended up with a "struct foo { ... };" 5157 try_resolving_type = (tag == DW_TAG_structure_type); 5158 break; 5159 case DW_TAG_structure_type: 5160 // We had a "struct foo", see if we ended up with a "class foo { ... };" 5161 try_resolving_type = (tag == DW_TAG_class_type); 5162 break; 5163 default: 5164 // Tags don't match, don't event try to resolve 5165 // using this type whose name matches.... 5166 break; 5167 } 5168 } 5169 5170 if (try_resolving_type) 5171 { 5172 DWARFDeclContext type_dwarf_decl_ctx; 5173 type_die->GetDWARFDeclContext (this, type_cu, type_dwarf_decl_ctx); 5174 5175 if (log) 5176 { 5177 GetObjectFile()->GetModule()->LogMessage (log, 5178 "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') trying die=0x%8.8x (%s)", 5179 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag), 5180 dwarf_decl_ctx.GetQualifiedName(), 5181 type_die->GetOffset(), 5182 type_dwarf_decl_ctx.GetQualifiedName()); 5183 } 5184 5185 // Make sure the decl contexts match all the way up 5186 if (dwarf_decl_ctx == type_dwarf_decl_ctx) 5187 { 5188 Type *resolved_type = ResolveType (type_cu, type_die, false); 5189 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) 5190 { 5191 type_sp = resolved_type->shared_from_this(); 5192 break; 5193 } 5194 } 5195 } 5196 else 5197 { 5198 if (log) 5199 { 5200 std::string qualified_name; 5201 type_die->GetQualifiedName(this, type_cu, qualified_name); 5202 GetObjectFile()->GetModule()->LogMessage (log, 5203 "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') ignoring die=0x%8.8x (%s)", 5204 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag), 5205 dwarf_decl_ctx.GetQualifiedName(), 5206 type_die->GetOffset(), 5207 qualified_name.c_str()); 5208 } 5209 } 5210 } 5211 else 5212 { 5213 if (m_using_apple_tables) 5214 { 5215 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n", 5216 die_offset, type_name.GetCString()); 5217 } 5218 } 5219 5220 } 5221 } 5222 } 5223 } 5224 return type_sp; 5225 } 5226 5227 bool 5228 SymbolFileDWARF::CopyUniqueClassMethodTypes (SymbolFileDWARF *src_symfile, 5229 Type *class_type, 5230 DWARFCompileUnit* src_cu, 5231 const DWARFDebugInfoEntry *src_class_die, 5232 DWARFCompileUnit* dst_cu, 5233 const DWARFDebugInfoEntry *dst_class_die, 5234 DWARFDIECollection &failures) 5235 { 5236 if (!class_type || !src_cu || !src_class_die || !dst_cu || !dst_class_die) 5237 return false; 5238 if (src_class_die->Tag() != dst_class_die->Tag()) 5239 return false; 5240 5241 // We need to complete the class type so we can get all of the method types 5242 // parsed so we can then unique those types to their equivalent counterparts 5243 // in "dst_cu" and "dst_class_die" 5244 class_type->GetClangFullType(); 5245 5246 const DWARFDebugInfoEntry *src_die; 5247 const DWARFDebugInfoEntry *dst_die; 5248 UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die; 5249 UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die; 5250 UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die_artificial; 5251 UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die_artificial; 5252 for (src_die = src_class_die->GetFirstChild(); src_die != NULL; src_die = src_die->GetSibling()) 5253 { 5254 if (src_die->Tag() == DW_TAG_subprogram) 5255 { 5256 // Make sure this is a declaration and not a concrete instance by looking 5257 // for DW_AT_declaration set to 1. Sometimes concrete function instances 5258 // are placed inside the class definitions and shouldn't be included in 5259 // the list of things are are tracking here. 5260 if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_declaration, 0) == 1) 5261 { 5262 const char *src_name = src_die->GetMangledName (src_symfile, src_cu); 5263 if (src_name) 5264 { 5265 ConstString src_const_name(src_name); 5266 if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_artificial, 0)) 5267 src_name_to_die_artificial.Append(src_const_name.GetCString(), src_die); 5268 else 5269 src_name_to_die.Append(src_const_name.GetCString(), src_die); 5270 } 5271 } 5272 } 5273 } 5274 for (dst_die = dst_class_die->GetFirstChild(); dst_die != NULL; dst_die = dst_die->GetSibling()) 5275 { 5276 if (dst_die->Tag() == DW_TAG_subprogram) 5277 { 5278 // Make sure this is a declaration and not a concrete instance by looking 5279 // for DW_AT_declaration set to 1. Sometimes concrete function instances 5280 // are placed inside the class definitions and shouldn't be included in 5281 // the list of things are are tracking here. 5282 if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_declaration, 0) == 1) 5283 { 5284 const char *dst_name = dst_die->GetMangledName (this, dst_cu); 5285 if (dst_name) 5286 { 5287 ConstString dst_const_name(dst_name); 5288 if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_artificial, 0)) 5289 dst_name_to_die_artificial.Append(dst_const_name.GetCString(), dst_die); 5290 else 5291 dst_name_to_die.Append(dst_const_name.GetCString(), dst_die); 5292 } 5293 } 5294 } 5295 } 5296 const uint32_t src_size = src_name_to_die.GetSize (); 5297 const uint32_t dst_size = dst_name_to_die.GetSize (); 5298 Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | DWARF_LOG_TYPE_COMPLETION)); 5299 5300 // Is everything kosher so we can go through the members at top speed? 5301 bool fast_path = true; 5302 5303 if (src_size != dst_size) 5304 { 5305 if (src_size != 0 && dst_size != 0) 5306 { 5307 if (log) 5308 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)", 5309 src_class_die->GetOffset(), 5310 dst_class_die->GetOffset(), 5311 src_size, 5312 dst_size); 5313 } 5314 5315 fast_path = false; 5316 } 5317 5318 uint32_t idx; 5319 5320 if (fast_path) 5321 { 5322 for (idx = 0; idx < src_size; ++idx) 5323 { 5324 src_die = src_name_to_die.GetValueAtIndexUnchecked (idx); 5325 dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx); 5326 5327 if (src_die->Tag() != dst_die->Tag()) 5328 { 5329 if (log) 5330 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)", 5331 src_class_die->GetOffset(), 5332 dst_class_die->GetOffset(), 5333 src_die->GetOffset(), 5334 DW_TAG_value_to_name(src_die->Tag()), 5335 dst_die->GetOffset(), 5336 DW_TAG_value_to_name(src_die->Tag())); 5337 fast_path = false; 5338 } 5339 5340 const char *src_name = src_die->GetMangledName (src_symfile, src_cu); 5341 const char *dst_name = dst_die->GetMangledName (this, dst_cu); 5342 5343 // Make sure the names match 5344 if (src_name == dst_name || (strcmp (src_name, dst_name) == 0)) 5345 continue; 5346 5347 if (log) 5348 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)", 5349 src_class_die->GetOffset(), 5350 dst_class_die->GetOffset(), 5351 src_die->GetOffset(), 5352 src_name, 5353 dst_die->GetOffset(), 5354 dst_name); 5355 5356 fast_path = false; 5357 } 5358 } 5359 5360 // Now do the work of linking the DeclContexts and Types. 5361 if (fast_path) 5362 { 5363 // We can do this quickly. Just run across the tables index-for-index since 5364 // we know each node has matching names and tags. 5365 for (idx = 0; idx < src_size; ++idx) 5366 { 5367 src_die = src_name_to_die.GetValueAtIndexUnchecked (idx); 5368 dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx); 5369 5370 clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die]; 5371 if (src_decl_ctx) 5372 { 5373 if (log) 5374 log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", 5375 static_cast<void*>(src_decl_ctx), 5376 src_die->GetOffset(), dst_die->GetOffset()); 5377 LinkDeclContextToDIE (src_decl_ctx, dst_die); 5378 } 5379 else 5380 { 5381 if (log) 5382 log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", 5383 src_die->GetOffset(), dst_die->GetOffset()); 5384 } 5385 5386 Type *src_child_type = m_die_to_type[src_die]; 5387 if (src_child_type) 5388 { 5389 if (log) 5390 log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", 5391 static_cast<void*>(src_child_type), 5392 src_child_type->GetID(), 5393 src_die->GetOffset(), dst_die->GetOffset()); 5394 m_die_to_type[dst_die] = src_child_type; 5395 } 5396 else 5397 { 5398 if (log) 5399 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()); 5400 } 5401 } 5402 } 5403 else 5404 { 5405 // We must do this slowly. For each member of the destination, look 5406 // up a member in the source with the same name, check its tag, and 5407 // unique them if everything matches up. Report failures. 5408 5409 if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) 5410 { 5411 src_name_to_die.Sort(); 5412 5413 for (idx = 0; idx < dst_size; ++idx) 5414 { 5415 const char *dst_name = dst_name_to_die.GetCStringAtIndex(idx); 5416 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); 5417 src_die = src_name_to_die.Find(dst_name, NULL); 5418 5419 if (src_die && (src_die->Tag() == dst_die->Tag())) 5420 { 5421 clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die]; 5422 if (src_decl_ctx) 5423 { 5424 if (log) 5425 log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", 5426 static_cast<void*>(src_decl_ctx), 5427 src_die->GetOffset(), 5428 dst_die->GetOffset()); 5429 LinkDeclContextToDIE (src_decl_ctx, dst_die); 5430 } 5431 else 5432 { 5433 if (log) 5434 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()); 5435 } 5436 5437 Type *src_child_type = m_die_to_type[src_die]; 5438 if (src_child_type) 5439 { 5440 if (log) 5441 log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", 5442 static_cast<void*>(src_child_type), 5443 src_child_type->GetID(), 5444 src_die->GetOffset(), 5445 dst_die->GetOffset()); 5446 m_die_to_type[dst_die] = src_child_type; 5447 } 5448 else 5449 { 5450 if (log) 5451 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()); 5452 } 5453 } 5454 else 5455 { 5456 if (log) 5457 log->Printf ("warning: couldn't find a match for 0x%8.8x", dst_die->GetOffset()); 5458 5459 failures.Append(dst_die); 5460 } 5461 } 5462 } 5463 } 5464 5465 const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize (); 5466 const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize (); 5467 5468 UniqueCStringMap<const DWARFDebugInfoEntry *> name_to_die_artificial_not_in_src; 5469 5470 if (src_size_artificial && dst_size_artificial) 5471 { 5472 dst_name_to_die_artificial.Sort(); 5473 5474 for (idx = 0; idx < src_size_artificial; ++idx) 5475 { 5476 const char *src_name_artificial = src_name_to_die_artificial.GetCStringAtIndex(idx); 5477 src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked (idx); 5478 dst_die = dst_name_to_die_artificial.Find(src_name_artificial, NULL); 5479 5480 if (dst_die) 5481 { 5482 // Both classes have the artificial types, link them 5483 clang::DeclContext *src_decl_ctx = m_die_to_decl_ctx[src_die]; 5484 if (src_decl_ctx) 5485 { 5486 if (log) 5487 log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", 5488 static_cast<void*>(src_decl_ctx), 5489 src_die->GetOffset(), dst_die->GetOffset()); 5490 LinkDeclContextToDIE (src_decl_ctx, dst_die); 5491 } 5492 else 5493 { 5494 if (log) 5495 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()); 5496 } 5497 5498 Type *src_child_type = m_die_to_type[src_die]; 5499 if (src_child_type) 5500 { 5501 if (log) 5502 log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", 5503 static_cast<void*>(src_child_type), 5504 src_child_type->GetID(), 5505 src_die->GetOffset(), dst_die->GetOffset()); 5506 m_die_to_type[dst_die] = src_child_type; 5507 } 5508 else 5509 { 5510 if (log) 5511 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()); 5512 } 5513 } 5514 } 5515 } 5516 5517 if (dst_size_artificial) 5518 { 5519 for (idx = 0; idx < dst_size_artificial; ++idx) 5520 { 5521 const char *dst_name_artificial = dst_name_to_die_artificial.GetCStringAtIndex(idx); 5522 dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked (idx); 5523 if (log) 5524 log->Printf ("warning: need to create artificial method for 0x%8.8x for method '%s'", dst_die->GetOffset(), dst_name_artificial); 5525 5526 failures.Append(dst_die); 5527 } 5528 } 5529 5530 return (failures.Size() != 0); 5531 } 5532 5533 TypeSP 5534 SymbolFileDWARF::ParseType (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die, bool *type_is_new_ptr) 5535 { 5536 TypeSP type_sp; 5537 5538 if (type_is_new_ptr) 5539 *type_is_new_ptr = false; 5540 5541 #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE) 5542 static DIEStack g_die_stack; 5543 DIEStack::ScopedPopper scoped_die_logger(g_die_stack); 5544 #endif 5545 5546 AccessType accessibility = eAccessNone; 5547 if (die != NULL) 5548 { 5549 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 5550 if (log) 5551 { 5552 const DWARFDebugInfoEntry *context_die; 5553 clang::DeclContext *context = GetClangDeclContextContainingDIE (dwarf_cu, die, &context_die); 5554 5555 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')", 5556 die->GetOffset(), 5557 static_cast<void*>(context), 5558 context_die->GetOffset(), 5559 DW_TAG_value_to_name(die->Tag()), 5560 die->GetName(this, dwarf_cu)); 5561 5562 #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE) 5563 scoped_die_logger.Push (dwarf_cu, die); 5564 g_die_stack.LogDIEs(log, this); 5565 #endif 5566 } 5567 // 5568 // Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 5569 // if (log && dwarf_cu) 5570 // { 5571 // StreamString s; 5572 // die->DumpLocation (this, dwarf_cu, s); 5573 // GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData()); 5574 // 5575 // } 5576 5577 Type *type_ptr = m_die_to_type.lookup (die); 5578 TypeList* type_list = GetTypeList(); 5579 if (type_ptr == NULL) 5580 { 5581 ClangASTContext &ast = GetClangASTContext(); 5582 if (type_is_new_ptr) 5583 *type_is_new_ptr = true; 5584 5585 const dw_tag_t tag = die->Tag(); 5586 5587 bool is_forward_declaration = false; 5588 DWARFDebugInfoEntry::Attributes attributes; 5589 const char *type_name_cstr = NULL; 5590 ConstString type_name_const_str; 5591 Type::ResolveState resolve_state = Type::eResolveStateUnresolved; 5592 uint64_t byte_size = 0; 5593 Declaration decl; 5594 5595 Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID; 5596 ClangASTType clang_type; 5597 DWARFFormValue form_value; 5598 5599 dw_attr_t attr; 5600 5601 switch (tag) 5602 { 5603 case DW_TAG_base_type: 5604 case DW_TAG_pointer_type: 5605 case DW_TAG_reference_type: 5606 case DW_TAG_rvalue_reference_type: 5607 case DW_TAG_typedef: 5608 case DW_TAG_const_type: 5609 case DW_TAG_restrict_type: 5610 case DW_TAG_volatile_type: 5611 case DW_TAG_unspecified_type: 5612 { 5613 // Set a bit that lets us know that we are currently parsing this 5614 m_die_to_type[die] = DIE_IS_BEING_PARSED; 5615 5616 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 5617 uint32_t encoding = 0; 5618 lldb::user_id_t encoding_uid = LLDB_INVALID_UID; 5619 5620 if (num_attributes > 0) 5621 { 5622 uint32_t i; 5623 for (i=0; i<num_attributes; ++i) 5624 { 5625 attr = attributes.AttributeAtIndex(i); 5626 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 5627 { 5628 switch (attr) 5629 { 5630 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 5631 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 5632 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 5633 case DW_AT_name: 5634 5635 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 5636 // Work around a bug in llvm-gcc where they give a name to a reference type which doesn't 5637 // include the "&"... 5638 if (tag == DW_TAG_reference_type) 5639 { 5640 if (strchr (type_name_cstr, '&') == NULL) 5641 type_name_cstr = NULL; 5642 } 5643 if (type_name_cstr) 5644 type_name_const_str.SetCString(type_name_cstr); 5645 break; 5646 case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; 5647 case DW_AT_encoding: encoding = form_value.Unsigned(); break; 5648 case DW_AT_type: encoding_uid = form_value.Reference(); break; 5649 default: 5650 case DW_AT_sibling: 5651 break; 5652 } 5653 } 5654 } 5655 } 5656 5657 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); 5658 5659 switch (tag) 5660 { 5661 default: 5662 break; 5663 5664 case DW_TAG_unspecified_type: 5665 if (strcmp(type_name_cstr, "nullptr_t") == 0 || 5666 strcmp(type_name_cstr, "decltype(nullptr)") == 0 ) 5667 { 5668 resolve_state = Type::eResolveStateFull; 5669 clang_type = ast.GetBasicType(eBasicTypeNullPtr); 5670 break; 5671 } 5672 // Fall through to base type below in case we can handle the type there... 5673 5674 case DW_TAG_base_type: 5675 resolve_state = Type::eResolveStateFull; 5676 clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr, 5677 encoding, 5678 byte_size * 8); 5679 break; 5680 5681 case DW_TAG_pointer_type: encoding_data_type = Type::eEncodingIsPointerUID; break; 5682 case DW_TAG_reference_type: encoding_data_type = Type::eEncodingIsLValueReferenceUID; break; 5683 case DW_TAG_rvalue_reference_type: encoding_data_type = Type::eEncodingIsRValueReferenceUID; break; 5684 case DW_TAG_typedef: encoding_data_type = Type::eEncodingIsTypedefUID; break; 5685 case DW_TAG_const_type: encoding_data_type = Type::eEncodingIsConstUID; break; 5686 case DW_TAG_restrict_type: encoding_data_type = Type::eEncodingIsRestrictUID; break; 5687 case DW_TAG_volatile_type: encoding_data_type = Type::eEncodingIsVolatileUID; break; 5688 } 5689 5690 if (!clang_type && (encoding_data_type == Type::eEncodingIsPointerUID || encoding_data_type == Type::eEncodingIsTypedefUID) && sc.comp_unit != NULL) 5691 { 5692 bool translation_unit_is_objc = (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus); 5693 5694 if (translation_unit_is_objc) 5695 { 5696 if (type_name_cstr != NULL) 5697 { 5698 static ConstString g_objc_type_name_id("id"); 5699 static ConstString g_objc_type_name_Class("Class"); 5700 static ConstString g_objc_type_name_selector("SEL"); 5701 5702 if (type_name_const_str == g_objc_type_name_id) 5703 { 5704 if (log) 5705 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'id' built-in type.", 5706 die->GetOffset(), 5707 DW_TAG_value_to_name(die->Tag()), 5708 die->GetName(this, dwarf_cu)); 5709 clang_type = ast.GetBasicType(eBasicTypeObjCID); 5710 encoding_data_type = Type::eEncodingIsUID; 5711 encoding_uid = LLDB_INVALID_UID; 5712 resolve_state = Type::eResolveStateFull; 5713 5714 } 5715 else if (type_name_const_str == g_objc_type_name_Class) 5716 { 5717 if (log) 5718 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'Class' built-in type.", 5719 die->GetOffset(), 5720 DW_TAG_value_to_name(die->Tag()), 5721 die->GetName(this, dwarf_cu)); 5722 clang_type = ast.GetBasicType(eBasicTypeObjCClass); 5723 encoding_data_type = Type::eEncodingIsUID; 5724 encoding_uid = LLDB_INVALID_UID; 5725 resolve_state = Type::eResolveStateFull; 5726 } 5727 else if (type_name_const_str == g_objc_type_name_selector) 5728 { 5729 if (log) 5730 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'selector' built-in type.", 5731 die->GetOffset(), 5732 DW_TAG_value_to_name(die->Tag()), 5733 die->GetName(this, dwarf_cu)); 5734 clang_type = ast.GetBasicType(eBasicTypeObjCSel); 5735 encoding_data_type = Type::eEncodingIsUID; 5736 encoding_uid = LLDB_INVALID_UID; 5737 resolve_state = Type::eResolveStateFull; 5738 } 5739 } 5740 else if (encoding_data_type == Type::eEncodingIsPointerUID && encoding_uid != LLDB_INVALID_UID) 5741 { 5742 // Clang sometimes erroneously emits id as objc_object*. In that case we fix up the type to "id". 5743 5744 DWARFDebugInfoEntry* encoding_die = dwarf_cu->GetDIEPtr(encoding_uid); 5745 5746 if (encoding_die && encoding_die->Tag() == DW_TAG_structure_type) 5747 { 5748 if (const char *struct_name = encoding_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL)) 5749 { 5750 if (!strcmp(struct_name, "objc_object")) 5751 { 5752 if (log) 5753 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is 'objc_object*', which we overrode to 'id'.", 5754 die->GetOffset(), 5755 DW_TAG_value_to_name(die->Tag()), 5756 die->GetName(this, dwarf_cu)); 5757 clang_type = ast.GetBasicType(eBasicTypeObjCID); 5758 encoding_data_type = Type::eEncodingIsUID; 5759 encoding_uid = LLDB_INVALID_UID; 5760 resolve_state = Type::eResolveStateFull; 5761 } 5762 } 5763 } 5764 } 5765 } 5766 } 5767 5768 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 5769 this, 5770 type_name_const_str, 5771 byte_size, 5772 NULL, 5773 encoding_uid, 5774 encoding_data_type, 5775 &decl, 5776 clang_type, 5777 resolve_state)); 5778 5779 m_die_to_type[die] = type_sp.get(); 5780 5781 // Type* encoding_type = GetUniquedTypeForDIEOffset(encoding_uid, type_sp, NULL, 0, 0, false); 5782 // if (encoding_type != NULL) 5783 // { 5784 // if (encoding_type != DIE_IS_BEING_PARSED) 5785 // type_sp->SetEncodingType(encoding_type); 5786 // else 5787 // m_indirect_fixups.push_back(type_sp.get()); 5788 // } 5789 } 5790 break; 5791 5792 case DW_TAG_structure_type: 5793 case DW_TAG_union_type: 5794 case DW_TAG_class_type: 5795 { 5796 // Set a bit that lets us know that we are currently parsing this 5797 m_die_to_type[die] = DIE_IS_BEING_PARSED; 5798 bool byte_size_valid = false; 5799 5800 LanguageType class_language = eLanguageTypeUnknown; 5801 bool is_complete_objc_class = false; 5802 //bool struct_is_class = false; 5803 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 5804 if (num_attributes > 0) 5805 { 5806 uint32_t i; 5807 for (i=0; i<num_attributes; ++i) 5808 { 5809 attr = attributes.AttributeAtIndex(i); 5810 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 5811 { 5812 switch (attr) 5813 { 5814 case DW_AT_decl_file: 5815 if (dwarf_cu->DW_AT_decl_file_attributes_are_invalid()) 5816 { 5817 // llvm-gcc outputs invalid DW_AT_decl_file attributes that always 5818 // point to the compile unit file, so we clear this invalid value 5819 // so that we can still unique types efficiently. 5820 decl.SetFile(FileSpec ("<invalid>", false)); 5821 } 5822 else 5823 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); 5824 break; 5825 5826 case DW_AT_decl_line: 5827 decl.SetLine(form_value.Unsigned()); 5828 break; 5829 5830 case DW_AT_decl_column: 5831 decl.SetColumn(form_value.Unsigned()); 5832 break; 5833 5834 case DW_AT_name: 5835 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 5836 type_name_const_str.SetCString(type_name_cstr); 5837 break; 5838 5839 case DW_AT_byte_size: 5840 byte_size = form_value.Unsigned(); 5841 byte_size_valid = true; 5842 break; 5843 5844 case DW_AT_accessibility: 5845 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); 5846 break; 5847 5848 case DW_AT_declaration: 5849 is_forward_declaration = form_value.Boolean(); 5850 break; 5851 5852 case DW_AT_APPLE_runtime_class: 5853 class_language = (LanguageType)form_value.Signed(); 5854 break; 5855 5856 case DW_AT_APPLE_objc_complete_type: 5857 is_complete_objc_class = form_value.Signed(); 5858 break; 5859 5860 case DW_AT_allocated: 5861 case DW_AT_associated: 5862 case DW_AT_data_location: 5863 case DW_AT_description: 5864 case DW_AT_start_scope: 5865 case DW_AT_visibility: 5866 default: 5867 case DW_AT_sibling: 5868 break; 5869 } 5870 } 5871 } 5872 } 5873 5874 // UniqueDWARFASTType is large, so don't create a local variables on the 5875 // stack, put it on the heap. This function is often called recursively 5876 // and clang isn't good and sharing the stack space for variables in different blocks. 5877 std::unique_ptr<UniqueDWARFASTType> unique_ast_entry_ap(new UniqueDWARFASTType()); 5878 5879 // Only try and unique the type if it has a name. 5880 if (type_name_const_str && 5881 GetUniqueDWARFASTTypeMap().Find (type_name_const_str, 5882 this, 5883 dwarf_cu, 5884 die, 5885 decl, 5886 byte_size_valid ? byte_size : -1, 5887 *unique_ast_entry_ap)) 5888 { 5889 // We have already parsed this type or from another 5890 // compile unit. GCC loves to use the "one definition 5891 // rule" which can result in multiple definitions 5892 // of the same class over and over in each compile 5893 // unit. 5894 type_sp = unique_ast_entry_ap->m_type_sp; 5895 if (type_sp) 5896 { 5897 m_die_to_type[die] = type_sp.get(); 5898 return type_sp; 5899 } 5900 } 5901 5902 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 5903 5904 int tag_decl_kind = -1; 5905 AccessType default_accessibility = eAccessNone; 5906 if (tag == DW_TAG_structure_type) 5907 { 5908 tag_decl_kind = clang::TTK_Struct; 5909 default_accessibility = eAccessPublic; 5910 } 5911 else if (tag == DW_TAG_union_type) 5912 { 5913 tag_decl_kind = clang::TTK_Union; 5914 default_accessibility = eAccessPublic; 5915 } 5916 else if (tag == DW_TAG_class_type) 5917 { 5918 tag_decl_kind = clang::TTK_Class; 5919 default_accessibility = eAccessPrivate; 5920 } 5921 5922 if (byte_size_valid && byte_size == 0 && type_name_cstr && 5923 die->HasChildren() == false && 5924 sc.comp_unit->GetLanguage() == eLanguageTypeObjC) 5925 { 5926 // Work around an issue with clang at the moment where 5927 // forward declarations for objective C classes are emitted 5928 // as: 5929 // DW_TAG_structure_type [2] 5930 // DW_AT_name( "ForwardObjcClass" ) 5931 // DW_AT_byte_size( 0x00 ) 5932 // DW_AT_decl_file( "..." ) 5933 // DW_AT_decl_line( 1 ) 5934 // 5935 // Note that there is no DW_AT_declaration and there are 5936 // no children, and the byte size is zero. 5937 is_forward_declaration = true; 5938 } 5939 5940 if (class_language == eLanguageTypeObjC || 5941 class_language == eLanguageTypeObjC_plus_plus) 5942 { 5943 if (!is_complete_objc_class && Supports_DW_AT_APPLE_objc_complete_type(dwarf_cu)) 5944 { 5945 // We have a valid eSymbolTypeObjCClass class symbol whose 5946 // name matches the current objective C class that we 5947 // are trying to find and this DIE isn't the complete 5948 // definition (we checked is_complete_objc_class above and 5949 // know it is false), so the real definition is in here somewhere 5950 type_sp = FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true); 5951 5952 if (!type_sp && GetDebugMapSymfile ()) 5953 { 5954 // We weren't able to find a full declaration in 5955 // this DWARF, see if we have a declaration anywhere 5956 // else... 5957 type_sp = m_debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true); 5958 } 5959 5960 if (type_sp) 5961 { 5962 if (log) 5963 { 5964 GetObjectFile()->GetModule()->LogMessage (log, 5965 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an incomplete objc type, complete type is 0x%8.8" PRIx64, 5966 static_cast<void*>(this), 5967 die->GetOffset(), 5968 DW_TAG_value_to_name(tag), 5969 type_name_cstr, 5970 type_sp->GetID()); 5971 } 5972 5973 // We found a real definition for this type elsewhere 5974 // so lets use it and cache the fact that we found 5975 // a complete type for this die 5976 m_die_to_type[die] = type_sp.get(); 5977 return type_sp; 5978 } 5979 } 5980 } 5981 5982 5983 if (is_forward_declaration) 5984 { 5985 // We have a forward declaration to a type and we need 5986 // to try and find a full declaration. We look in the 5987 // current type index just in case we have a forward 5988 // declaration followed by an actual declarations in the 5989 // DWARF. If this fails, we need to look elsewhere... 5990 if (log) 5991 { 5992 GetObjectFile()->GetModule()->LogMessage (log, 5993 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, trying to find complete type", 5994 static_cast<void*>(this), 5995 die->GetOffset(), 5996 DW_TAG_value_to_name(tag), 5997 type_name_cstr); 5998 } 5999 6000 DWARFDeclContext die_decl_ctx; 6001 die->GetDWARFDeclContext(this, dwarf_cu, die_decl_ctx); 6002 6003 //type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str); 6004 type_sp = FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); 6005 6006 if (!type_sp && GetDebugMapSymfile ()) 6007 { 6008 // We weren't able to find a full declaration in 6009 // this DWARF, see if we have a declaration anywhere 6010 // else... 6011 type_sp = m_debug_map_symfile->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); 6012 } 6013 6014 if (type_sp) 6015 { 6016 if (log) 6017 { 6018 GetObjectFile()->GetModule()->LogMessage (log, 6019 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, complete type is 0x%8.8" PRIx64, 6020 static_cast<void*>(this), 6021 die->GetOffset(), 6022 DW_TAG_value_to_name(tag), 6023 type_name_cstr, 6024 type_sp->GetID()); 6025 } 6026 6027 // We found a real definition for this type elsewhere 6028 // so lets use it and cache the fact that we found 6029 // a complete type for this die 6030 m_die_to_type[die] = type_sp.get(); 6031 return type_sp; 6032 } 6033 } 6034 assert (tag_decl_kind != -1); 6035 bool clang_type_was_created = false; 6036 clang_type.SetClangType(ast.getASTContext(), m_forward_decl_die_to_clang_type.lookup (die)); 6037 if (!clang_type) 6038 { 6039 const DWARFDebugInfoEntry *decl_ctx_die; 6040 6041 clang::DeclContext *decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die); 6042 if (accessibility == eAccessNone && decl_ctx) 6043 { 6044 // Check the decl context that contains this class/struct/union. 6045 // If it is a class we must give it an accessibility. 6046 const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind(); 6047 if (DeclKindIsCXXClass (containing_decl_kind)) 6048 accessibility = default_accessibility; 6049 } 6050 6051 ClangASTMetadata metadata; 6052 metadata.SetUserID(MakeUserID(die->GetOffset())); 6053 metadata.SetIsDynamicCXXType(ClassOrStructIsVirtual (dwarf_cu, die)); 6054 6055 if (type_name_cstr && strchr (type_name_cstr, '<')) 6056 { 6057 ClangASTContext::TemplateParameterInfos template_param_infos; 6058 if (ParseTemplateParameterInfos (dwarf_cu, die, template_param_infos)) 6059 { 6060 clang::ClassTemplateDecl *class_template_decl = ParseClassTemplateDecl (decl_ctx, 6061 accessibility, 6062 type_name_cstr, 6063 tag_decl_kind, 6064 template_param_infos); 6065 6066 clang::ClassTemplateSpecializationDecl *class_specialization_decl = ast.CreateClassTemplateSpecializationDecl (decl_ctx, 6067 class_template_decl, 6068 tag_decl_kind, 6069 template_param_infos); 6070 clang_type = ast.CreateClassTemplateSpecializationType (class_specialization_decl); 6071 clang_type_was_created = true; 6072 6073 GetClangASTContext().SetMetadata (class_template_decl, metadata); 6074 GetClangASTContext().SetMetadata (class_specialization_decl, metadata); 6075 } 6076 } 6077 6078 if (!clang_type_was_created) 6079 { 6080 clang_type_was_created = true; 6081 clang_type = ast.CreateRecordType (decl_ctx, 6082 accessibility, 6083 type_name_cstr, 6084 tag_decl_kind, 6085 class_language, 6086 &metadata); 6087 } 6088 } 6089 6090 // Store a forward declaration to this class type in case any 6091 // parameters in any class methods need it for the clang 6092 // types for function prototypes. 6093 LinkDeclContextToDIE(clang_type.GetDeclContextForType(), die); 6094 type_sp.reset (new Type (MakeUserID(die->GetOffset()), 6095 this, 6096 type_name_const_str, 6097 byte_size, 6098 NULL, 6099 LLDB_INVALID_UID, 6100 Type::eEncodingIsUID, 6101 &decl, 6102 clang_type, 6103 Type::eResolveStateForward)); 6104 6105 type_sp->SetIsCompleteObjCClass(is_complete_objc_class); 6106 6107 6108 // Add our type to the unique type map so we don't 6109 // end up creating many copies of the same type over 6110 // and over in the ASTContext for our module 6111 unique_ast_entry_ap->m_type_sp = type_sp; 6112 unique_ast_entry_ap->m_symfile = this; 6113 unique_ast_entry_ap->m_cu = dwarf_cu; 6114 unique_ast_entry_ap->m_die = die; 6115 unique_ast_entry_ap->m_declaration = decl; 6116 unique_ast_entry_ap->m_byte_size = byte_size; 6117 GetUniqueDWARFASTTypeMap().Insert (type_name_const_str, 6118 *unique_ast_entry_ap); 6119 6120 if (is_forward_declaration && die->HasChildren()) 6121 { 6122 // Check to see if the DIE actually has a definition, some version of GCC will 6123 // emit DIEs with DW_AT_declaration set to true, but yet still have subprogram, 6124 // members, or inheritance, so we can't trust it 6125 const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); 6126 while (child_die) 6127 { 6128 switch (child_die->Tag()) 6129 { 6130 case DW_TAG_inheritance: 6131 case DW_TAG_subprogram: 6132 case DW_TAG_member: 6133 case DW_TAG_APPLE_property: 6134 case DW_TAG_class_type: 6135 case DW_TAG_structure_type: 6136 case DW_TAG_enumeration_type: 6137 case DW_TAG_typedef: 6138 case DW_TAG_union_type: 6139 child_die = NULL; 6140 is_forward_declaration = false; 6141 break; 6142 default: 6143 child_die = child_die->GetSibling(); 6144 break; 6145 } 6146 } 6147 } 6148 6149 if (!is_forward_declaration) 6150 { 6151 // Always start the definition for a class type so that 6152 // if the class has child classes or types that require 6153 // the class to be created for use as their decl contexts 6154 // the class will be ready to accept these child definitions. 6155 if (die->HasChildren() == false) 6156 { 6157 // No children for this struct/union/class, lets finish it 6158 clang_type.StartTagDeclarationDefinition (); 6159 clang_type.CompleteTagDeclarationDefinition (); 6160 6161 if (tag == DW_TAG_structure_type) // this only applies in C 6162 { 6163 clang::RecordDecl *record_decl = clang_type.GetAsRecordDecl(); 6164 6165 if (record_decl) 6166 m_record_decl_to_layout_map.insert(std::make_pair(record_decl, LayoutInfo())); 6167 } 6168 } 6169 else if (clang_type_was_created) 6170 { 6171 // Start the definition if the class is not objective C since 6172 // the underlying decls respond to isCompleteDefinition(). Objective 6173 // C decls don't respond to isCompleteDefinition() so we can't 6174 // start the declaration definition right away. For C++ class/union/structs 6175 // we want to start the definition in case the class is needed as the 6176 // declaration context for a contained class or type without the need 6177 // to complete that type.. 6178 6179 if (class_language != eLanguageTypeObjC && 6180 class_language != eLanguageTypeObjC_plus_plus) 6181 clang_type.StartTagDeclarationDefinition (); 6182 6183 // Leave this as a forward declaration until we need 6184 // to know the details of the type. lldb_private::Type 6185 // will automatically call the SymbolFile virtual function 6186 // "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition(Type *)" 6187 // When the definition needs to be defined. 6188 m_forward_decl_die_to_clang_type[die] = clang_type.GetOpaqueQualType(); 6189 m_forward_decl_clang_type_to_die[clang_type.RemoveFastQualifiers().GetOpaqueQualType()] = die; 6190 clang_type.SetHasExternalStorage (true); 6191 } 6192 } 6193 6194 } 6195 break; 6196 6197 case DW_TAG_enumeration_type: 6198 { 6199 // Set a bit that lets us know that we are currently parsing this 6200 m_die_to_type[die] = DIE_IS_BEING_PARSED; 6201 6202 lldb::user_id_t encoding_uid = DW_INVALID_OFFSET; 6203 6204 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 6205 if (num_attributes > 0) 6206 { 6207 uint32_t i; 6208 6209 for (i=0; i<num_attributes; ++i) 6210 { 6211 attr = attributes.AttributeAtIndex(i); 6212 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 6213 { 6214 switch (attr) 6215 { 6216 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 6217 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 6218 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 6219 case DW_AT_name: 6220 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 6221 type_name_const_str.SetCString(type_name_cstr); 6222 break; 6223 case DW_AT_type: encoding_uid = form_value.Reference(); break; 6224 case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; 6225 case DW_AT_accessibility: break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 6226 case DW_AT_declaration: break; //is_forward_declaration = form_value.Boolean(); break; 6227 case DW_AT_allocated: 6228 case DW_AT_associated: 6229 case DW_AT_bit_stride: 6230 case DW_AT_byte_stride: 6231 case DW_AT_data_location: 6232 case DW_AT_description: 6233 case DW_AT_start_scope: 6234 case DW_AT_visibility: 6235 case DW_AT_specification: 6236 case DW_AT_abstract_origin: 6237 case DW_AT_sibling: 6238 break; 6239 } 6240 } 6241 } 6242 6243 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 6244 6245 ClangASTType enumerator_clang_type; 6246 clang_type.SetClangType (ast.getASTContext(), m_forward_decl_die_to_clang_type.lookup (die)); 6247 if (!clang_type) 6248 { 6249 if (encoding_uid != DW_INVALID_OFFSET) 6250 { 6251 Type *enumerator_type = ResolveTypeUID(encoding_uid); 6252 if (enumerator_type) 6253 enumerator_clang_type = enumerator_type->GetClangFullType(); 6254 } 6255 6256 if (!enumerator_clang_type) 6257 enumerator_clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (NULL, 6258 DW_ATE_signed, 6259 byte_size * 8); 6260 6261 clang_type = ast.CreateEnumerationType (type_name_cstr, 6262 GetClangDeclContextContainingDIE (dwarf_cu, die, NULL), 6263 decl, 6264 enumerator_clang_type); 6265 } 6266 else 6267 { 6268 enumerator_clang_type = clang_type.GetEnumerationIntegerType (); 6269 } 6270 6271 LinkDeclContextToDIE(clang_type.GetDeclContextForType(), die); 6272 6273 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 6274 this, 6275 type_name_const_str, 6276 byte_size, 6277 NULL, 6278 encoding_uid, 6279 Type::eEncodingIsUID, 6280 &decl, 6281 clang_type, 6282 Type::eResolveStateForward)); 6283 6284 clang_type.StartTagDeclarationDefinition (); 6285 if (die->HasChildren()) 6286 { 6287 SymbolContext cu_sc(GetCompUnitForDWARFCompUnit(dwarf_cu)); 6288 bool is_signed = false; 6289 enumerator_clang_type.IsIntegerType(is_signed); 6290 ParseChildEnumerators(cu_sc, clang_type, is_signed, type_sp->GetByteSize(), dwarf_cu, die); 6291 } 6292 clang_type.CompleteTagDeclarationDefinition (); 6293 } 6294 } 6295 break; 6296 6297 case DW_TAG_inlined_subroutine: 6298 case DW_TAG_subprogram: 6299 case DW_TAG_subroutine_type: 6300 { 6301 // Set a bit that lets us know that we are currently parsing this 6302 m_die_to_type[die] = DIE_IS_BEING_PARSED; 6303 6304 //const char *mangled = NULL; 6305 dw_offset_t type_die_offset = DW_INVALID_OFFSET; 6306 bool is_variadic = false; 6307 bool is_inline = false; 6308 bool is_static = false; 6309 bool is_virtual = false; 6310 bool is_explicit = false; 6311 bool is_artificial = false; 6312 dw_offset_t specification_die_offset = DW_INVALID_OFFSET; 6313 dw_offset_t abstract_origin_die_offset = DW_INVALID_OFFSET; 6314 dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET; 6315 6316 unsigned type_quals = 0; 6317 clang::StorageClass storage = clang::SC_None;//, Extern, Static, PrivateExtern 6318 6319 6320 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 6321 if (num_attributes > 0) 6322 { 6323 uint32_t i; 6324 for (i=0; i<num_attributes; ++i) 6325 { 6326 attr = attributes.AttributeAtIndex(i); 6327 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 6328 { 6329 switch (attr) 6330 { 6331 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 6332 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 6333 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 6334 case DW_AT_name: 6335 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 6336 type_name_const_str.SetCString(type_name_cstr); 6337 break; 6338 6339 case DW_AT_linkage_name: 6340 case DW_AT_MIPS_linkage_name: break; // mangled = form_value.AsCString(&get_debug_str_data()); break; 6341 case DW_AT_type: type_die_offset = form_value.Reference(); break; 6342 case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 6343 case DW_AT_declaration: break; // is_forward_declaration = form_value.Boolean(); break; 6344 case DW_AT_inline: is_inline = form_value.Boolean(); break; 6345 case DW_AT_virtuality: is_virtual = form_value.Boolean(); break; 6346 case DW_AT_explicit: is_explicit = form_value.Boolean(); break; 6347 case DW_AT_artificial: is_artificial = form_value.Boolean(); break; 6348 6349 6350 case DW_AT_external: 6351 if (form_value.Unsigned()) 6352 { 6353 if (storage == clang::SC_None) 6354 storage = clang::SC_Extern; 6355 else 6356 storage = clang::SC_PrivateExtern; 6357 } 6358 break; 6359 6360 case DW_AT_specification: 6361 specification_die_offset = form_value.Reference(); 6362 break; 6363 6364 case DW_AT_abstract_origin: 6365 abstract_origin_die_offset = form_value.Reference(); 6366 break; 6367 6368 case DW_AT_object_pointer: 6369 object_pointer_die_offset = form_value.Reference(); 6370 break; 6371 6372 case DW_AT_allocated: 6373 case DW_AT_associated: 6374 case DW_AT_address_class: 6375 case DW_AT_calling_convention: 6376 case DW_AT_data_location: 6377 case DW_AT_elemental: 6378 case DW_AT_entry_pc: 6379 case DW_AT_frame_base: 6380 case DW_AT_high_pc: 6381 case DW_AT_low_pc: 6382 case DW_AT_prototyped: 6383 case DW_AT_pure: 6384 case DW_AT_ranges: 6385 case DW_AT_recursive: 6386 case DW_AT_return_addr: 6387 case DW_AT_segment: 6388 case DW_AT_start_scope: 6389 case DW_AT_static_link: 6390 case DW_AT_trampoline: 6391 case DW_AT_visibility: 6392 case DW_AT_vtable_elem_location: 6393 case DW_AT_description: 6394 case DW_AT_sibling: 6395 break; 6396 } 6397 } 6398 } 6399 } 6400 6401 std::string object_pointer_name; 6402 if (object_pointer_die_offset != DW_INVALID_OFFSET) 6403 { 6404 // Get the name from the object pointer die 6405 StreamString s; 6406 if (DWARFDebugInfoEntry::GetName (this, dwarf_cu, object_pointer_die_offset, s)) 6407 { 6408 object_pointer_name.assign(s.GetData()); 6409 } 6410 } 6411 6412 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 6413 6414 ClangASTType return_clang_type; 6415 Type *func_type = NULL; 6416 6417 if (type_die_offset != DW_INVALID_OFFSET) 6418 func_type = ResolveTypeUID(type_die_offset); 6419 6420 if (func_type) 6421 return_clang_type = func_type->GetClangForwardType(); 6422 else 6423 return_clang_type = ast.GetBasicType(eBasicTypeVoid); 6424 6425 6426 std::vector<ClangASTType> function_param_types; 6427 std::vector<clang::ParmVarDecl*> function_param_decls; 6428 6429 // Parse the function children for the parameters 6430 6431 const DWARFDebugInfoEntry *decl_ctx_die = NULL; 6432 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die); 6433 const clang::Decl::Kind containing_decl_kind = containing_decl_ctx->getDeclKind(); 6434 6435 const bool is_cxx_method = DeclKindIsCXXClass (containing_decl_kind); 6436 // Start off static. This will be set to false in ParseChildParameters(...) 6437 // if we find a "this" parameters as the first parameter 6438 if (is_cxx_method) 6439 is_static = true; 6440 6441 if (die->HasChildren()) 6442 { 6443 bool skip_artificial = true; 6444 ParseChildParameters (sc, 6445 containing_decl_ctx, 6446 dwarf_cu, 6447 die, 6448 skip_artificial, 6449 is_static, 6450 is_variadic, 6451 type_list, 6452 function_param_types, 6453 function_param_decls, 6454 type_quals); 6455 } 6456 6457 // clang_type will get the function prototype clang type after this call 6458 clang_type = ast.CreateFunctionType (return_clang_type, 6459 function_param_types.data(), 6460 function_param_types.size(), 6461 is_variadic, 6462 type_quals); 6463 6464 bool ignore_containing_context = false; 6465 6466 if (type_name_cstr) 6467 { 6468 bool type_handled = false; 6469 if (tag == DW_TAG_subprogram) 6470 { 6471 ObjCLanguageRuntime::MethodName objc_method (type_name_cstr, true); 6472 if (objc_method.IsValid(true)) 6473 { 6474 ClangASTType class_opaque_type; 6475 ConstString class_name(objc_method.GetClassName()); 6476 if (class_name) 6477 { 6478 TypeSP complete_objc_class_type_sp (FindCompleteObjCDefinitionTypeForDIE (NULL, class_name, false)); 6479 6480 if (complete_objc_class_type_sp) 6481 { 6482 ClangASTType type_clang_forward_type = complete_objc_class_type_sp->GetClangForwardType(); 6483 if (type_clang_forward_type.IsObjCObjectOrInterfaceType ()) 6484 class_opaque_type = type_clang_forward_type; 6485 } 6486 } 6487 6488 if (class_opaque_type) 6489 { 6490 // If accessibility isn't set to anything valid, assume public for 6491 // now... 6492 if (accessibility == eAccessNone) 6493 accessibility = eAccessPublic; 6494 6495 clang::ObjCMethodDecl *objc_method_decl = class_opaque_type.AddMethodToObjCObjectType (type_name_cstr, 6496 clang_type, 6497 accessibility, 6498 is_artificial); 6499 type_handled = objc_method_decl != NULL; 6500 if (type_handled) 6501 { 6502 LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(objc_method_decl), die); 6503 GetClangASTContext().SetMetadataAsUserID (objc_method_decl, MakeUserID(die->GetOffset())); 6504 } 6505 else 6506 { 6507 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", 6508 die->GetOffset(), 6509 tag, 6510 DW_TAG_value_to_name(tag)); 6511 } 6512 } 6513 } 6514 else if (is_cxx_method) 6515 { 6516 // Look at the parent of this DIE and see if is is 6517 // a class or struct and see if this is actually a 6518 // C++ method 6519 Type *class_type = ResolveType (dwarf_cu, decl_ctx_die); 6520 if (class_type) 6521 { 6522 if (class_type->GetID() != MakeUserID(decl_ctx_die->GetOffset())) 6523 { 6524 // We uniqued the parent class of this function to another class 6525 // so we now need to associate all dies under "decl_ctx_die" to 6526 // DIEs in the DIE for "class_type"... 6527 SymbolFileDWARF *class_symfile = NULL; 6528 DWARFCompileUnitSP class_type_cu_sp; 6529 const DWARFDebugInfoEntry *class_type_die = NULL; 6530 6531 SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile(); 6532 if (debug_map_symfile) 6533 { 6534 class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex(SymbolFileDWARFDebugMap::GetOSOIndexFromUserID(class_type->GetID())); 6535 class_type_die = class_symfile->DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp); 6536 } 6537 else 6538 { 6539 class_symfile = this; 6540 class_type_die = DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp); 6541 } 6542 if (class_type_die) 6543 { 6544 DWARFDIECollection failures; 6545 6546 CopyUniqueClassMethodTypes (class_symfile, 6547 class_type, 6548 class_type_cu_sp.get(), 6549 class_type_die, 6550 dwarf_cu, 6551 decl_ctx_die, 6552 failures); 6553 6554 // FIXME do something with these failures that's smarter than 6555 // just dropping them on the ground. Unfortunately classes don't 6556 // like having stuff added to them after their definitions are 6557 // complete... 6558 6559 type_ptr = m_die_to_type[die]; 6560 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) 6561 { 6562 type_sp = type_ptr->shared_from_this(); 6563 break; 6564 } 6565 } 6566 } 6567 6568 if (specification_die_offset != DW_INVALID_OFFSET) 6569 { 6570 // We have a specification which we are going to base our function 6571 // prototype off of, so we need this type to be completed so that the 6572 // m_die_to_decl_ctx for the method in the specification has a valid 6573 // clang decl context. 6574 class_type->GetClangForwardType(); 6575 // If we have a specification, then the function type should have been 6576 // made with the specification and not with this die. 6577 DWARFCompileUnitSP spec_cu_sp; 6578 const DWARFDebugInfoEntry* spec_die = DebugInfo()->GetDIEPtr(specification_die_offset, &spec_cu_sp); 6579 clang::DeclContext *spec_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, spec_die); 6580 if (spec_clang_decl_ctx) 6581 { 6582 LinkDeclContextToDIE(spec_clang_decl_ctx, die); 6583 } 6584 else 6585 { 6586 GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_specification(0x%8.8x) has no decl\n", 6587 MakeUserID(die->GetOffset()), 6588 specification_die_offset); 6589 } 6590 type_handled = true; 6591 } 6592 else if (abstract_origin_die_offset != DW_INVALID_OFFSET) 6593 { 6594 // We have a specification which we are going to base our function 6595 // prototype off of, so we need this type to be completed so that the 6596 // m_die_to_decl_ctx for the method in the abstract origin has a valid 6597 // clang decl context. 6598 class_type->GetClangForwardType(); 6599 6600 DWARFCompileUnitSP abs_cu_sp; 6601 const DWARFDebugInfoEntry* abs_die = DebugInfo()->GetDIEPtr(abstract_origin_die_offset, &abs_cu_sp); 6602 clang::DeclContext *abs_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, abs_die); 6603 if (abs_clang_decl_ctx) 6604 { 6605 LinkDeclContextToDIE (abs_clang_decl_ctx, die); 6606 } 6607 else 6608 { 6609 GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_abstract_origin(0x%8.8x) has no decl\n", 6610 MakeUserID(die->GetOffset()), 6611 abstract_origin_die_offset); 6612 } 6613 type_handled = true; 6614 } 6615 else 6616 { 6617 ClangASTType class_opaque_type = class_type->GetClangForwardType(); 6618 if (class_opaque_type.IsCXXClassType ()) 6619 { 6620 if (class_opaque_type.IsBeingDefined ()) 6621 { 6622 // Neither GCC 4.2 nor clang++ currently set a valid accessibility 6623 // in the DWARF for C++ methods... Default to public for now... 6624 if (accessibility == eAccessNone) 6625 accessibility = eAccessPublic; 6626 6627 if (!is_static && !die->HasChildren()) 6628 { 6629 // We have a C++ member function with no children (this pointer!) 6630 // and clang will get mad if we try and make a function that isn't 6631 // well formed in the DWARF, so we will just skip it... 6632 type_handled = true; 6633 } 6634 else 6635 { 6636 clang::CXXMethodDecl *cxx_method_decl; 6637 // REMOVE THE CRASH DESCRIPTION BELOW 6638 Host::SetCrashDescriptionWithFormat ("SymbolFileDWARF::ParseType() is adding a method %s to class %s in DIE 0x%8.8" PRIx64 " from %s", 6639 type_name_cstr, 6640 class_type->GetName().GetCString(), 6641 MakeUserID(die->GetOffset()), 6642 m_obj_file->GetFileSpec().GetPath().c_str()); 6643 6644 const bool is_attr_used = false; 6645 6646 cxx_method_decl = class_opaque_type.AddMethodToCXXRecordType (type_name_cstr, 6647 clang_type, 6648 accessibility, 6649 is_virtual, 6650 is_static, 6651 is_inline, 6652 is_explicit, 6653 is_attr_used, 6654 is_artificial); 6655 6656 type_handled = cxx_method_decl != NULL; 6657 6658 if (type_handled) 6659 { 6660 LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(cxx_method_decl), die); 6661 6662 Host::SetCrashDescription (NULL); 6663 6664 6665 ClangASTMetadata metadata; 6666 metadata.SetUserID(MakeUserID(die->GetOffset())); 6667 6668 if (!object_pointer_name.empty()) 6669 { 6670 metadata.SetObjectPtrName(object_pointer_name.c_str()); 6671 if (log) 6672 log->Printf ("Setting object pointer name: %s on method object %p.\n", 6673 object_pointer_name.c_str(), 6674 static_cast<void*>(cxx_method_decl)); 6675 } 6676 GetClangASTContext().SetMetadata (cxx_method_decl, metadata); 6677 } 6678 else 6679 { 6680 ignore_containing_context = true; 6681 } 6682 } 6683 } 6684 else 6685 { 6686 // We were asked to parse the type for a method in a class, yet the 6687 // class hasn't been asked to complete itself through the 6688 // clang::ExternalASTSource protocol, so we need to just have the 6689 // class complete itself and do things the right way, then our 6690 // DIE should then have an entry in the m_die_to_type map. First 6691 // we need to modify the m_die_to_type so it doesn't think we are 6692 // trying to parse this DIE anymore... 6693 m_die_to_type[die] = NULL; 6694 6695 // Now we get the full type to force our class type to complete itself 6696 // using the clang::ExternalASTSource protocol which will parse all 6697 // base classes and all methods (including the method for this DIE). 6698 class_type->GetClangFullType(); 6699 6700 // The type for this DIE should have been filled in the function call above 6701 type_ptr = m_die_to_type[die]; 6702 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) 6703 { 6704 type_sp = type_ptr->shared_from_this(); 6705 break; 6706 } 6707 6708 // FIXME This is fixing some even uglier behavior but we really need to 6709 // uniq the methods of each class as well as the class itself. 6710 // <rdar://problem/11240464> 6711 type_handled = true; 6712 } 6713 } 6714 } 6715 } 6716 } 6717 } 6718 6719 if (!type_handled) 6720 { 6721 // We just have a function that isn't part of a class 6722 clang::FunctionDecl *function_decl = ast.CreateFunctionDeclaration (ignore_containing_context ? GetClangASTContext().GetTranslationUnitDecl() : containing_decl_ctx, 6723 type_name_cstr, 6724 clang_type, 6725 storage, 6726 is_inline); 6727 6728 // if (template_param_infos.GetSize() > 0) 6729 // { 6730 // clang::FunctionTemplateDecl *func_template_decl = ast.CreateFunctionTemplateDecl (containing_decl_ctx, 6731 // function_decl, 6732 // type_name_cstr, 6733 // template_param_infos); 6734 // 6735 // ast.CreateFunctionTemplateSpecializationInfo (function_decl, 6736 // func_template_decl, 6737 // template_param_infos); 6738 // } 6739 // Add the decl to our DIE to decl context map 6740 assert (function_decl); 6741 LinkDeclContextToDIE(function_decl, die); 6742 if (!function_param_decls.empty()) 6743 ast.SetFunctionParameters (function_decl, 6744 &function_param_decls.front(), 6745 function_param_decls.size()); 6746 6747 ClangASTMetadata metadata; 6748 metadata.SetUserID(MakeUserID(die->GetOffset())); 6749 6750 if (!object_pointer_name.empty()) 6751 { 6752 metadata.SetObjectPtrName(object_pointer_name.c_str()); 6753 if (log) 6754 log->Printf ("Setting object pointer name: %s on function object %p.", 6755 object_pointer_name.c_str(), 6756 static_cast<void*>(function_decl)); 6757 } 6758 GetClangASTContext().SetMetadata (function_decl, metadata); 6759 } 6760 } 6761 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 6762 this, 6763 type_name_const_str, 6764 0, 6765 NULL, 6766 LLDB_INVALID_UID, 6767 Type::eEncodingIsUID, 6768 &decl, 6769 clang_type, 6770 Type::eResolveStateFull)); 6771 assert(type_sp.get()); 6772 } 6773 break; 6774 6775 case DW_TAG_array_type: 6776 { 6777 // Set a bit that lets us know that we are currently parsing this 6778 m_die_to_type[die] = DIE_IS_BEING_PARSED; 6779 6780 lldb::user_id_t type_die_offset = DW_INVALID_OFFSET; 6781 int64_t first_index = 0; 6782 uint32_t byte_stride = 0; 6783 uint32_t bit_stride = 0; 6784 bool is_vector = false; 6785 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 6786 6787 if (num_attributes > 0) 6788 { 6789 uint32_t i; 6790 for (i=0; i<num_attributes; ++i) 6791 { 6792 attr = attributes.AttributeAtIndex(i); 6793 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 6794 { 6795 switch (attr) 6796 { 6797 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 6798 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 6799 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 6800 case DW_AT_name: 6801 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 6802 type_name_const_str.SetCString(type_name_cstr); 6803 break; 6804 6805 case DW_AT_type: type_die_offset = form_value.Reference(); break; 6806 case DW_AT_byte_size: break; // byte_size = form_value.Unsigned(); break; 6807 case DW_AT_byte_stride: byte_stride = form_value.Unsigned(); break; 6808 case DW_AT_bit_stride: bit_stride = form_value.Unsigned(); break; 6809 case DW_AT_GNU_vector: is_vector = form_value.Boolean(); break; 6810 case DW_AT_accessibility: break; // accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 6811 case DW_AT_declaration: break; // is_forward_declaration = form_value.Boolean(); break; 6812 case DW_AT_allocated: 6813 case DW_AT_associated: 6814 case DW_AT_data_location: 6815 case DW_AT_description: 6816 case DW_AT_ordering: 6817 case DW_AT_start_scope: 6818 case DW_AT_visibility: 6819 case DW_AT_specification: 6820 case DW_AT_abstract_origin: 6821 case DW_AT_sibling: 6822 break; 6823 } 6824 } 6825 } 6826 6827 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 6828 6829 Type *element_type = ResolveTypeUID(type_die_offset); 6830 6831 if (element_type) 6832 { 6833 std::vector<uint64_t> element_orders; 6834 ParseChildArrayInfo(sc, dwarf_cu, die, first_index, element_orders, byte_stride, bit_stride); 6835 if (byte_stride == 0 && bit_stride == 0) 6836 byte_stride = element_type->GetByteSize(); 6837 ClangASTType array_element_type = element_type->GetClangForwardType(); 6838 uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride; 6839 if (element_orders.size() > 0) 6840 { 6841 uint64_t num_elements = 0; 6842 std::vector<uint64_t>::const_reverse_iterator pos; 6843 std::vector<uint64_t>::const_reverse_iterator end = element_orders.rend(); 6844 for (pos = element_orders.rbegin(); pos != end; ++pos) 6845 { 6846 num_elements = *pos; 6847 clang_type = ast.CreateArrayType (array_element_type, 6848 num_elements, 6849 is_vector); 6850 array_element_type = clang_type; 6851 array_element_bit_stride = num_elements ? 6852 array_element_bit_stride * num_elements : 6853 array_element_bit_stride; 6854 } 6855 } 6856 else 6857 { 6858 clang_type = ast.CreateArrayType (array_element_type, 0, is_vector); 6859 } 6860 ConstString empty_name; 6861 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 6862 this, 6863 empty_name, 6864 array_element_bit_stride / 8, 6865 NULL, 6866 type_die_offset, 6867 Type::eEncodingIsUID, 6868 &decl, 6869 clang_type, 6870 Type::eResolveStateFull)); 6871 type_sp->SetEncodingType (element_type); 6872 } 6873 } 6874 } 6875 break; 6876 6877 case DW_TAG_ptr_to_member_type: 6878 { 6879 dw_offset_t type_die_offset = DW_INVALID_OFFSET; 6880 dw_offset_t containing_type_die_offset = DW_INVALID_OFFSET; 6881 6882 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 6883 6884 if (num_attributes > 0) { 6885 uint32_t i; 6886 for (i=0; i<num_attributes; ++i) 6887 { 6888 attr = attributes.AttributeAtIndex(i); 6889 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 6890 { 6891 switch (attr) 6892 { 6893 case DW_AT_type: 6894 type_die_offset = form_value.Reference(); break; 6895 case DW_AT_containing_type: 6896 containing_type_die_offset = form_value.Reference(); break; 6897 } 6898 } 6899 } 6900 6901 Type *pointee_type = ResolveTypeUID(type_die_offset); 6902 Type *class_type = ResolveTypeUID(containing_type_die_offset); 6903 6904 ClangASTType pointee_clang_type = pointee_type->GetClangForwardType(); 6905 ClangASTType class_clang_type = class_type->GetClangLayoutType(); 6906 6907 clang_type = pointee_clang_type.CreateMemberPointerType(class_clang_type); 6908 6909 byte_size = clang_type.GetByteSize(); 6910 6911 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 6912 this, 6913 type_name_const_str, 6914 byte_size, 6915 NULL, 6916 LLDB_INVALID_UID, 6917 Type::eEncodingIsUID, 6918 NULL, 6919 clang_type, 6920 Type::eResolveStateForward)); 6921 } 6922 6923 break; 6924 } 6925 default: 6926 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", 6927 die->GetOffset(), 6928 tag, 6929 DW_TAG_value_to_name(tag)); 6930 break; 6931 } 6932 6933 if (type_sp.get()) 6934 { 6935 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die); 6936 dw_tag_t sc_parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; 6937 6938 SymbolContextScope * symbol_context_scope = NULL; 6939 if (sc_parent_tag == DW_TAG_compile_unit) 6940 { 6941 symbol_context_scope = sc.comp_unit; 6942 } 6943 else if (sc.function != NULL && sc_parent_die) 6944 { 6945 symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); 6946 if (symbol_context_scope == NULL) 6947 symbol_context_scope = sc.function; 6948 } 6949 6950 if (symbol_context_scope != NULL) 6951 { 6952 type_sp->SetSymbolContextScope(symbol_context_scope); 6953 } 6954 6955 // We are ready to put this type into the uniqued list up at the module level 6956 type_list->Insert (type_sp); 6957 6958 m_die_to_type[die] = type_sp.get(); 6959 } 6960 } 6961 else if (type_ptr != DIE_IS_BEING_PARSED) 6962 { 6963 type_sp = type_ptr->shared_from_this(); 6964 } 6965 } 6966 return type_sp; 6967 } 6968 6969 size_t 6970 SymbolFileDWARF::ParseTypes 6971 ( 6972 const SymbolContext& sc, 6973 DWARFCompileUnit* dwarf_cu, 6974 const DWARFDebugInfoEntry *die, 6975 bool parse_siblings, 6976 bool parse_children 6977 ) 6978 { 6979 size_t types_added = 0; 6980 while (die != NULL) 6981 { 6982 bool type_is_new = false; 6983 if (ParseType(sc, dwarf_cu, die, &type_is_new).get()) 6984 { 6985 if (type_is_new) 6986 ++types_added; 6987 } 6988 6989 if (parse_children && die->HasChildren()) 6990 { 6991 if (die->Tag() == DW_TAG_subprogram) 6992 { 6993 SymbolContext child_sc(sc); 6994 child_sc.function = sc.comp_unit->FindFunctionByUID(MakeUserID(die->GetOffset())).get(); 6995 types_added += ParseTypes(child_sc, dwarf_cu, die->GetFirstChild(), true, true); 6996 } 6997 else 6998 types_added += ParseTypes(sc, dwarf_cu, die->GetFirstChild(), true, true); 6999 } 7000 7001 if (parse_siblings) 7002 die = die->GetSibling(); 7003 else 7004 die = NULL; 7005 } 7006 return types_added; 7007 } 7008 7009 7010 size_t 7011 SymbolFileDWARF::ParseFunctionBlocks (const SymbolContext &sc) 7012 { 7013 assert(sc.comp_unit && sc.function); 7014 size_t functions_added = 0; 7015 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 7016 if (dwarf_cu) 7017 { 7018 dw_offset_t function_die_offset = sc.function->GetID(); 7019 const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(function_die_offset); 7020 if (function_die) 7021 { 7022 ParseFunctionBlocks(sc, &sc.function->GetBlock (false), dwarf_cu, function_die, LLDB_INVALID_ADDRESS, 0); 7023 } 7024 } 7025 7026 return functions_added; 7027 } 7028 7029 7030 size_t 7031 SymbolFileDWARF::ParseTypes (const SymbolContext &sc) 7032 { 7033 // At least a compile unit must be valid 7034 assert(sc.comp_unit); 7035 size_t types_added = 0; 7036 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 7037 if (dwarf_cu) 7038 { 7039 if (sc.function) 7040 { 7041 dw_offset_t function_die_offset = sc.function->GetID(); 7042 const DWARFDebugInfoEntry *func_die = dwarf_cu->GetDIEPtr(function_die_offset); 7043 if (func_die && func_die->HasChildren()) 7044 { 7045 types_added = ParseTypes(sc, dwarf_cu, func_die->GetFirstChild(), true, true); 7046 } 7047 } 7048 else 7049 { 7050 const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->DIE(); 7051 if (dwarf_cu_die && dwarf_cu_die->HasChildren()) 7052 { 7053 types_added = ParseTypes(sc, dwarf_cu, dwarf_cu_die->GetFirstChild(), true, true); 7054 } 7055 } 7056 } 7057 7058 return types_added; 7059 } 7060 7061 size_t 7062 SymbolFileDWARF::ParseVariablesForContext (const SymbolContext& sc) 7063 { 7064 if (sc.comp_unit != NULL) 7065 { 7066 DWARFDebugInfo* info = DebugInfo(); 7067 if (info == NULL) 7068 return 0; 7069 7070 if (sc.function) 7071 { 7072 DWARFCompileUnit* dwarf_cu = info->GetCompileUnitContainingDIE(sc.function->GetID()).get(); 7073 7074 if (dwarf_cu == NULL) 7075 return 0; 7076 7077 const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(sc.function->GetID()); 7078 7079 dw_addr_t func_lo_pc = function_die->GetAttributeValueAsUnsigned (this, dwarf_cu, DW_AT_low_pc, LLDB_INVALID_ADDRESS); 7080 if (func_lo_pc != LLDB_INVALID_ADDRESS) 7081 { 7082 const size_t num_variables = ParseVariables(sc, dwarf_cu, func_lo_pc, function_die->GetFirstChild(), true, true); 7083 7084 // Let all blocks know they have parse all their variables 7085 sc.function->GetBlock (false).SetDidParseVariables (true, true); 7086 return num_variables; 7087 } 7088 } 7089 else if (sc.comp_unit) 7090 { 7091 DWARFCompileUnit* dwarf_cu = info->GetCompileUnit(sc.comp_unit->GetID()).get(); 7092 7093 if (dwarf_cu == NULL) 7094 return 0; 7095 7096 uint32_t vars_added = 0; 7097 VariableListSP variables (sc.comp_unit->GetVariableList(false)); 7098 7099 if (variables.get() == NULL) 7100 { 7101 variables.reset(new VariableList()); 7102 sc.comp_unit->SetVariableList(variables); 7103 7104 DWARFCompileUnit* match_dwarf_cu = NULL; 7105 const DWARFDebugInfoEntry* die = NULL; 7106 DIEArray die_offsets; 7107 if (m_using_apple_tables) 7108 { 7109 if (m_apple_names_ap.get()) 7110 { 7111 DWARFMappedHash::DIEInfoArray hash_data_array; 7112 if (m_apple_names_ap->AppendAllDIEsInRange (dwarf_cu->GetOffset(), 7113 dwarf_cu->GetNextCompileUnitOffset(), 7114 hash_data_array)) 7115 { 7116 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); 7117 } 7118 } 7119 } 7120 else 7121 { 7122 // Index if we already haven't to make sure the compile units 7123 // get indexed and make their global DIE index list 7124 if (!m_indexed) 7125 Index (); 7126 7127 m_global_index.FindAllEntriesForCompileUnit (dwarf_cu->GetOffset(), 7128 dwarf_cu->GetNextCompileUnitOffset(), 7129 die_offsets); 7130 } 7131 7132 const size_t num_matches = die_offsets.size(); 7133 if (num_matches) 7134 { 7135 DWARFDebugInfo* debug_info = DebugInfo(); 7136 for (size_t i=0; i<num_matches; ++i) 7137 { 7138 const dw_offset_t die_offset = die_offsets[i]; 7139 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &match_dwarf_cu); 7140 if (die) 7141 { 7142 VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, LLDB_INVALID_ADDRESS)); 7143 if (var_sp) 7144 { 7145 variables->AddVariableIfUnique (var_sp); 7146 ++vars_added; 7147 } 7148 } 7149 else 7150 { 7151 if (m_using_apple_tables) 7152 { 7153 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x)\n", die_offset); 7154 } 7155 } 7156 7157 } 7158 } 7159 } 7160 return vars_added; 7161 } 7162 } 7163 return 0; 7164 } 7165 7166 7167 VariableSP 7168 SymbolFileDWARF::ParseVariableDIE 7169 ( 7170 const SymbolContext& sc, 7171 DWARFCompileUnit* dwarf_cu, 7172 const DWARFDebugInfoEntry *die, 7173 const lldb::addr_t func_low_pc 7174 ) 7175 { 7176 VariableSP var_sp (m_die_to_variable_sp[die]); 7177 if (var_sp) 7178 return var_sp; // Already been parsed! 7179 7180 const dw_tag_t tag = die->Tag(); 7181 ModuleSP module = GetObjectFile()->GetModule(); 7182 7183 if ((tag == DW_TAG_variable) || 7184 (tag == DW_TAG_constant) || 7185 (tag == DW_TAG_formal_parameter && sc.function)) 7186 { 7187 DWARFDebugInfoEntry::Attributes attributes; 7188 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 7189 if (num_attributes > 0) 7190 { 7191 const char *name = NULL; 7192 const char *mangled = NULL; 7193 Declaration decl; 7194 uint32_t i; 7195 lldb::user_id_t type_uid = LLDB_INVALID_UID; 7196 DWARFExpression location; 7197 bool is_external = false; 7198 bool is_artificial = false; 7199 bool location_is_const_value_data = false; 7200 bool has_explicit_location = false; 7201 DWARFFormValue const_value; 7202 //AccessType accessibility = eAccessNone; 7203 7204 for (i=0; i<num_attributes; ++i) 7205 { 7206 dw_attr_t attr = attributes.AttributeAtIndex(i); 7207 DWARFFormValue form_value; 7208 7209 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 7210 { 7211 switch (attr) 7212 { 7213 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 7214 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 7215 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 7216 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; 7217 case DW_AT_linkage_name: 7218 case DW_AT_MIPS_linkage_name: mangled = form_value.AsCString(&get_debug_str_data()); break; 7219 case DW_AT_type: type_uid = form_value.Reference(); break; 7220 case DW_AT_external: is_external = form_value.Boolean(); break; 7221 case DW_AT_const_value: 7222 // If we have already found a DW_AT_location attribute, ignore this attribute. 7223 if (!has_explicit_location) 7224 { 7225 location_is_const_value_data = true; 7226 // The constant value will be either a block, a data value or a string. 7227 const DWARFDataExtractor& debug_info_data = get_debug_info_data(); 7228 if (DWARFFormValue::IsBlockForm(form_value.Form())) 7229 { 7230 // Retrieve the value as a block expression. 7231 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 7232 uint32_t block_length = form_value.Unsigned(); 7233 location.CopyOpcodeData(module, debug_info_data, block_offset, block_length); 7234 } 7235 else if (DWARFFormValue::IsDataForm(form_value.Form())) 7236 { 7237 // Retrieve the value as a data expression. 7238 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (attributes.CompileUnitAtIndex(i)->GetAddressByteSize(), attributes.CompileUnitAtIndex(i)->IsDWARF64()); 7239 uint32_t data_offset = attributes.DIEOffsetAtIndex(i); 7240 uint32_t data_length = fixed_form_sizes[form_value.Form()]; 7241 if (data_length == 0) 7242 { 7243 const uint8_t *data_pointer = form_value.BlockData(); 7244 if (data_pointer) 7245 { 7246 form_value.Unsigned(); 7247 } 7248 else if (DWARFFormValue::IsDataForm(form_value.Form())) 7249 { 7250 // we need to get the byte size of the type later after we create the variable 7251 const_value = form_value; 7252 } 7253 } 7254 else 7255 location.CopyOpcodeData(module, debug_info_data, data_offset, data_length); 7256 } 7257 else 7258 { 7259 // Retrieve the value as a string expression. 7260 if (form_value.Form() == DW_FORM_strp) 7261 { 7262 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (attributes.CompileUnitAtIndex(i)->GetAddressByteSize(), attributes.CompileUnitAtIndex(i)->IsDWARF64()); 7263 uint32_t data_offset = attributes.DIEOffsetAtIndex(i); 7264 uint32_t data_length = fixed_form_sizes[form_value.Form()]; 7265 location.CopyOpcodeData(module, debug_info_data, data_offset, data_length); 7266 } 7267 else 7268 { 7269 const char *str = form_value.AsCString(&debug_info_data); 7270 uint32_t string_offset = str - (const char *)debug_info_data.GetDataStart(); 7271 uint32_t string_length = strlen(str) + 1; 7272 location.CopyOpcodeData(module, debug_info_data, string_offset, string_length); 7273 } 7274 } 7275 } 7276 break; 7277 case DW_AT_location: 7278 { 7279 location_is_const_value_data = false; 7280 has_explicit_location = true; 7281 if (form_value.BlockData()) 7282 { 7283 const DWARFDataExtractor& debug_info_data = get_debug_info_data(); 7284 7285 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 7286 uint32_t block_length = form_value.Unsigned(); 7287 location.CopyOpcodeData(module, get_debug_info_data(), block_offset, block_length); 7288 } 7289 else 7290 { 7291 const DWARFDataExtractor& debug_loc_data = get_debug_loc_data(); 7292 const dw_offset_t debug_loc_offset = form_value.Unsigned(); 7293 7294 size_t loc_list_length = DWARFLocationList::Size(debug_loc_data, debug_loc_offset); 7295 if (loc_list_length > 0) 7296 { 7297 location.CopyOpcodeData(module, debug_loc_data, debug_loc_offset, loc_list_length); 7298 assert (func_low_pc != LLDB_INVALID_ADDRESS); 7299 location.SetLocationListSlide (func_low_pc - attributes.CompileUnitAtIndex(i)->GetBaseAddress()); 7300 } 7301 } 7302 } 7303 break; 7304 7305 case DW_AT_artificial: is_artificial = form_value.Boolean(); break; 7306 case DW_AT_accessibility: break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 7307 case DW_AT_declaration: 7308 case DW_AT_description: 7309 case DW_AT_endianity: 7310 case DW_AT_segment: 7311 case DW_AT_start_scope: 7312 case DW_AT_visibility: 7313 default: 7314 case DW_AT_abstract_origin: 7315 case DW_AT_sibling: 7316 case DW_AT_specification: 7317 break; 7318 } 7319 } 7320 } 7321 7322 ValueType scope = eValueTypeInvalid; 7323 7324 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die); 7325 dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; 7326 SymbolContextScope * symbol_context_scope = NULL; 7327 7328 // DWARF doesn't specify if a DW_TAG_variable is a local, global 7329 // or static variable, so we have to do a little digging by 7330 // looking at the location of a variable to see if it contains 7331 // a DW_OP_addr opcode _somewhere_ in the definition. I say 7332 // somewhere because clang likes to combine small global variables 7333 // into the same symbol and have locations like: 7334 // DW_OP_addr(0x1000), DW_OP_constu(2), DW_OP_plus 7335 // So if we don't have a DW_TAG_formal_parameter, we can look at 7336 // the location to see if it contains a DW_OP_addr opcode, and 7337 // then we can correctly classify our variables. 7338 if (tag == DW_TAG_formal_parameter) 7339 scope = eValueTypeVariableArgument; 7340 else 7341 { 7342 bool op_error = false; 7343 // Check if the location has a DW_OP_addr with any address value... 7344 lldb::addr_t location_DW_OP_addr = LLDB_INVALID_ADDRESS; 7345 if (!location_is_const_value_data) 7346 { 7347 location_DW_OP_addr = location.GetLocation_DW_OP_addr (0, op_error); 7348 if (op_error) 7349 { 7350 StreamString strm; 7351 location.DumpLocationForAddress (&strm, eDescriptionLevelFull, 0, 0, NULL); 7352 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()); 7353 } 7354 } 7355 7356 if (location_DW_OP_addr != LLDB_INVALID_ADDRESS) 7357 { 7358 if (is_external) 7359 scope = eValueTypeVariableGlobal; 7360 else 7361 scope = eValueTypeVariableStatic; 7362 7363 7364 SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile (); 7365 7366 if (debug_map_symfile) 7367 { 7368 // When leaving the DWARF in the .o files on darwin, 7369 // when we have a global variable that wasn't initialized, 7370 // the .o file might not have allocated a virtual 7371 // address for the global variable. In this case it will 7372 // have created a symbol for the global variable 7373 // that is undefined/data and external and the value will 7374 // be the byte size of the variable. When we do the 7375 // address map in SymbolFileDWARFDebugMap we rely on 7376 // having an address, we need to do some magic here 7377 // so we can get the correct address for our global 7378 // variable. The address for all of these entries 7379 // will be zero, and there will be an undefined symbol 7380 // in this object file, and the executable will have 7381 // a matching symbol with a good address. So here we 7382 // dig up the correct address and replace it in the 7383 // location for the variable, and set the variable's 7384 // symbol context scope to be that of the main executable 7385 // so the file address will resolve correctly. 7386 bool linked_oso_file_addr = false; 7387 if (is_external && location_DW_OP_addr == 0) 7388 { 7389 // we have a possible uninitialized extern global 7390 ConstString const_name(mangled ? mangled : name); 7391 ObjectFile *debug_map_objfile = debug_map_symfile->GetObjectFile(); 7392 if (debug_map_objfile) 7393 { 7394 Symtab *debug_map_symtab = debug_map_objfile->GetSymtab(); 7395 if (debug_map_symtab) 7396 { 7397 Symbol *exe_symbol = debug_map_symtab->FindFirstSymbolWithNameAndType (const_name, 7398 eSymbolTypeData, 7399 Symtab::eDebugYes, 7400 Symtab::eVisibilityExtern); 7401 if (exe_symbol) 7402 { 7403 if (exe_symbol->ValueIsAddress()) 7404 { 7405 const addr_t exe_file_addr = exe_symbol->GetAddress().GetFileAddress(); 7406 if (exe_file_addr != LLDB_INVALID_ADDRESS) 7407 { 7408 if (location.Update_DW_OP_addr (exe_file_addr)) 7409 { 7410 linked_oso_file_addr = true; 7411 symbol_context_scope = exe_symbol; 7412 } 7413 } 7414 } 7415 } 7416 } 7417 } 7418 } 7419 7420 if (!linked_oso_file_addr) 7421 { 7422 // The DW_OP_addr is not zero, but it contains a .o file address which 7423 // needs to be linked up correctly. 7424 const lldb::addr_t exe_file_addr = debug_map_symfile->LinkOSOFileAddress(this, location_DW_OP_addr); 7425 if (exe_file_addr != LLDB_INVALID_ADDRESS) 7426 { 7427 // Update the file address for this variable 7428 location.Update_DW_OP_addr (exe_file_addr); 7429 } 7430 else 7431 { 7432 // Variable didn't make it into the final executable 7433 return var_sp; 7434 } 7435 } 7436 } 7437 } 7438 else 7439 { 7440 scope = eValueTypeVariableLocal; 7441 } 7442 } 7443 7444 if (symbol_context_scope == NULL) 7445 { 7446 switch (parent_tag) 7447 { 7448 case DW_TAG_subprogram: 7449 case DW_TAG_inlined_subroutine: 7450 case DW_TAG_lexical_block: 7451 if (sc.function) 7452 { 7453 symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); 7454 if (symbol_context_scope == NULL) 7455 symbol_context_scope = sc.function; 7456 } 7457 break; 7458 7459 default: 7460 symbol_context_scope = sc.comp_unit; 7461 break; 7462 } 7463 } 7464 7465 if (symbol_context_scope) 7466 { 7467 SymbolFileTypeSP type_sp(new SymbolFileType(*this, type_uid)); 7468 7469 if (const_value.Form() && type_sp && type_sp->GetType()) 7470 location.CopyOpcodeData(const_value.Unsigned(), type_sp->GetType()->GetByteSize(), dwarf_cu->GetAddressByteSize()); 7471 7472 var_sp.reset (new Variable (MakeUserID(die->GetOffset()), 7473 name, 7474 mangled, 7475 type_sp, 7476 scope, 7477 symbol_context_scope, 7478 &decl, 7479 location, 7480 is_external, 7481 is_artificial)); 7482 7483 var_sp->SetLocationIsConstantValueData (location_is_const_value_data); 7484 } 7485 else 7486 { 7487 // Not ready to parse this variable yet. It might be a global 7488 // or static variable that is in a function scope and the function 7489 // in the symbol context wasn't filled in yet 7490 return var_sp; 7491 } 7492 } 7493 // Cache var_sp even if NULL (the variable was just a specification or 7494 // was missing vital information to be able to be displayed in the debugger 7495 // (missing location due to optimization, etc)) so we don't re-parse 7496 // this DIE over and over later... 7497 m_die_to_variable_sp[die] = var_sp; 7498 } 7499 return var_sp; 7500 } 7501 7502 7503 const DWARFDebugInfoEntry * 7504 SymbolFileDWARF::FindBlockContainingSpecification (dw_offset_t func_die_offset, 7505 dw_offset_t spec_block_die_offset, 7506 DWARFCompileUnit **result_die_cu_handle) 7507 { 7508 // Give the concrete function die specified by "func_die_offset", find the 7509 // concrete block whose DW_AT_specification or DW_AT_abstract_origin points 7510 // to "spec_block_die_offset" 7511 DWARFDebugInfo* info = DebugInfo(); 7512 7513 const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint(func_die_offset, result_die_cu_handle); 7514 if (die) 7515 { 7516 assert (*result_die_cu_handle); 7517 return FindBlockContainingSpecification (*result_die_cu_handle, die, spec_block_die_offset, result_die_cu_handle); 7518 } 7519 return NULL; 7520 } 7521 7522 7523 const DWARFDebugInfoEntry * 7524 SymbolFileDWARF::FindBlockContainingSpecification(DWARFCompileUnit* dwarf_cu, 7525 const DWARFDebugInfoEntry *die, 7526 dw_offset_t spec_block_die_offset, 7527 DWARFCompileUnit **result_die_cu_handle) 7528 { 7529 if (die) 7530 { 7531 switch (die->Tag()) 7532 { 7533 case DW_TAG_subprogram: 7534 case DW_TAG_inlined_subroutine: 7535 case DW_TAG_lexical_block: 7536 { 7537 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_specification, DW_INVALID_OFFSET) == spec_block_die_offset) 7538 { 7539 *result_die_cu_handle = dwarf_cu; 7540 return die; 7541 } 7542 7543 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_abstract_origin, DW_INVALID_OFFSET) == spec_block_die_offset) 7544 { 7545 *result_die_cu_handle = dwarf_cu; 7546 return die; 7547 } 7548 } 7549 break; 7550 } 7551 7552 // Give the concrete function die specified by "func_die_offset", find the 7553 // concrete block whose DW_AT_specification or DW_AT_abstract_origin points 7554 // to "spec_block_die_offset" 7555 for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); child_die != NULL; child_die = child_die->GetSibling()) 7556 { 7557 const DWARFDebugInfoEntry *result_die = FindBlockContainingSpecification (dwarf_cu, 7558 child_die, 7559 spec_block_die_offset, 7560 result_die_cu_handle); 7561 if (result_die) 7562 return result_die; 7563 } 7564 } 7565 7566 *result_die_cu_handle = NULL; 7567 return NULL; 7568 } 7569 7570 size_t 7571 SymbolFileDWARF::ParseVariables 7572 ( 7573 const SymbolContext& sc, 7574 DWARFCompileUnit* dwarf_cu, 7575 const lldb::addr_t func_low_pc, 7576 const DWARFDebugInfoEntry *orig_die, 7577 bool parse_siblings, 7578 bool parse_children, 7579 VariableList* cc_variable_list 7580 ) 7581 { 7582 if (orig_die == NULL) 7583 return 0; 7584 7585 VariableListSP variable_list_sp; 7586 7587 size_t vars_added = 0; 7588 const DWARFDebugInfoEntry *die = orig_die; 7589 while (die != NULL) 7590 { 7591 dw_tag_t tag = die->Tag(); 7592 7593 // Check to see if we have already parsed this variable or constant? 7594 if (m_die_to_variable_sp[die]) 7595 { 7596 if (cc_variable_list) 7597 cc_variable_list->AddVariableIfUnique (m_die_to_variable_sp[die]); 7598 } 7599 else 7600 { 7601 // We haven't already parsed it, lets do that now. 7602 if ((tag == DW_TAG_variable) || 7603 (tag == DW_TAG_constant) || 7604 (tag == DW_TAG_formal_parameter && sc.function)) 7605 { 7606 if (variable_list_sp.get() == NULL) 7607 { 7608 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(orig_die); 7609 dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; 7610 switch (parent_tag) 7611 { 7612 case DW_TAG_compile_unit: 7613 if (sc.comp_unit != NULL) 7614 { 7615 variable_list_sp = sc.comp_unit->GetVariableList(false); 7616 if (variable_list_sp.get() == NULL) 7617 { 7618 variable_list_sp.reset(new VariableList()); 7619 sc.comp_unit->SetVariableList(variable_list_sp); 7620 } 7621 } 7622 else 7623 { 7624 GetObjectFile()->GetModule()->ReportError ("parent 0x%8.8" PRIx64 " %s with no valid compile unit in symbol context for 0x%8.8" PRIx64 " %s.\n", 7625 MakeUserID(sc_parent_die->GetOffset()), 7626 DW_TAG_value_to_name (parent_tag), 7627 MakeUserID(orig_die->GetOffset()), 7628 DW_TAG_value_to_name (orig_die->Tag())); 7629 } 7630 break; 7631 7632 case DW_TAG_subprogram: 7633 case DW_TAG_inlined_subroutine: 7634 case DW_TAG_lexical_block: 7635 if (sc.function != NULL) 7636 { 7637 // Check to see if we already have parsed the variables for the given scope 7638 7639 Block *block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); 7640 if (block == NULL) 7641 { 7642 // This must be a specification or abstract origin with 7643 // a concrete block counterpart in the current function. We need 7644 // to find the concrete block so we can correctly add the 7645 // variable to it 7646 DWARFCompileUnit *concrete_block_die_cu = dwarf_cu; 7647 const DWARFDebugInfoEntry *concrete_block_die = FindBlockContainingSpecification (sc.function->GetID(), 7648 sc_parent_die->GetOffset(), 7649 &concrete_block_die_cu); 7650 if (concrete_block_die) 7651 block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(concrete_block_die->GetOffset())); 7652 } 7653 7654 if (block != NULL) 7655 { 7656 const bool can_create = false; 7657 variable_list_sp = block->GetBlockVariableList (can_create); 7658 if (variable_list_sp.get() == NULL) 7659 { 7660 variable_list_sp.reset(new VariableList()); 7661 block->SetVariableList(variable_list_sp); 7662 } 7663 } 7664 } 7665 break; 7666 7667 default: 7668 GetObjectFile()->GetModule()->ReportError ("didn't find appropriate parent DIE for variable list for 0x%8.8" PRIx64 " %s.\n", 7669 MakeUserID(orig_die->GetOffset()), 7670 DW_TAG_value_to_name (orig_die->Tag())); 7671 break; 7672 } 7673 } 7674 7675 if (variable_list_sp) 7676 { 7677 VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, func_low_pc)); 7678 if (var_sp) 7679 { 7680 variable_list_sp->AddVariableIfUnique (var_sp); 7681 if (cc_variable_list) 7682 cc_variable_list->AddVariableIfUnique (var_sp); 7683 ++vars_added; 7684 } 7685 } 7686 } 7687 } 7688 7689 bool skip_children = (sc.function == NULL && tag == DW_TAG_subprogram); 7690 7691 if (!skip_children && parse_children && die->HasChildren()) 7692 { 7693 vars_added += ParseVariables(sc, dwarf_cu, func_low_pc, die->GetFirstChild(), true, true, cc_variable_list); 7694 } 7695 7696 if (parse_siblings) 7697 die = die->GetSibling(); 7698 else 7699 die = NULL; 7700 } 7701 return vars_added; 7702 } 7703 7704 //------------------------------------------------------------------ 7705 // PluginInterface protocol 7706 //------------------------------------------------------------------ 7707 ConstString 7708 SymbolFileDWARF::GetPluginName() 7709 { 7710 return GetPluginNameStatic(); 7711 } 7712 7713 uint32_t 7714 SymbolFileDWARF::GetPluginVersion() 7715 { 7716 return 1; 7717 } 7718 7719 void 7720 SymbolFileDWARF::CompleteTagDecl (void *baton, clang::TagDecl *decl) 7721 { 7722 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 7723 ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); 7724 if (clang_type) 7725 symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); 7726 } 7727 7728 void 7729 SymbolFileDWARF::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *decl) 7730 { 7731 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 7732 ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); 7733 if (clang_type) 7734 symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); 7735 } 7736 7737 void 7738 SymbolFileDWARF::DumpIndexes () 7739 { 7740 StreamFile s(stdout, false); 7741 7742 s.Printf ("DWARF index for (%s) '%s':", 7743 GetObjectFile()->GetModule()->GetArchitecture().GetArchitectureName(), 7744 GetObjectFile()->GetFileSpec().GetPath().c_str()); 7745 s.Printf("\nFunction basenames:\n"); m_function_basename_index.Dump (&s); 7746 s.Printf("\nFunction fullnames:\n"); m_function_fullname_index.Dump (&s); 7747 s.Printf("\nFunction methods:\n"); m_function_method_index.Dump (&s); 7748 s.Printf("\nFunction selectors:\n"); m_function_selector_index.Dump (&s); 7749 s.Printf("\nObjective C class selectors:\n"); m_objc_class_selectors_index.Dump (&s); 7750 s.Printf("\nGlobals and statics:\n"); m_global_index.Dump (&s); 7751 s.Printf("\nTypes:\n"); m_type_index.Dump (&s); 7752 s.Printf("\nNamepaces:\n"); m_namespace_index.Dump (&s); 7753 } 7754 7755 void 7756 SymbolFileDWARF::SearchDeclContext (const clang::DeclContext *decl_context, 7757 const char *name, 7758 llvm::SmallVectorImpl <clang::NamedDecl *> *results) 7759 { 7760 DeclContextToDIEMap::iterator iter = m_decl_ctx_to_die.find(decl_context); 7761 7762 if (iter == m_decl_ctx_to_die.end()) 7763 return; 7764 7765 for (DIEPointerSet::iterator pos = iter->second.begin(), end = iter->second.end(); pos != end; ++pos) 7766 { 7767 const DWARFDebugInfoEntry *context_die = *pos; 7768 7769 if (!results) 7770 return; 7771 7772 DWARFDebugInfo* info = DebugInfo(); 7773 7774 DIEArray die_offsets; 7775 7776 DWARFCompileUnit* dwarf_cu = NULL; 7777 const DWARFDebugInfoEntry* die = NULL; 7778 7779 if (m_using_apple_tables) 7780 { 7781 if (m_apple_types_ap.get()) 7782 m_apple_types_ap->FindByName (name, die_offsets); 7783 } 7784 else 7785 { 7786 if (!m_indexed) 7787 Index (); 7788 7789 m_type_index.Find (ConstString(name), die_offsets); 7790 } 7791 7792 const size_t num_matches = die_offsets.size(); 7793 7794 if (num_matches) 7795 { 7796 for (size_t i = 0; i < num_matches; ++i) 7797 { 7798 const dw_offset_t die_offset = die_offsets[i]; 7799 die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 7800 7801 if (die->GetParent() != context_die) 7802 continue; 7803 7804 Type *matching_type = ResolveType (dwarf_cu, die); 7805 7806 clang::QualType qual_type = matching_type->GetClangForwardType().GetQualType(); 7807 7808 if (const clang::TagType *tag_type = llvm::dyn_cast<clang::TagType>(qual_type.getTypePtr())) 7809 { 7810 clang::TagDecl *tag_decl = tag_type->getDecl(); 7811 results->push_back(tag_decl); 7812 } 7813 else if (const clang::TypedefType *typedef_type = llvm::dyn_cast<clang::TypedefType>(qual_type.getTypePtr())) 7814 { 7815 clang::TypedefNameDecl *typedef_decl = typedef_type->getDecl(); 7816 results->push_back(typedef_decl); 7817 } 7818 } 7819 } 7820 } 7821 } 7822 7823 void 7824 SymbolFileDWARF::FindExternalVisibleDeclsByName (void *baton, 7825 const clang::DeclContext *decl_context, 7826 clang::DeclarationName decl_name, 7827 llvm::SmallVectorImpl <clang::NamedDecl *> *results) 7828 { 7829 7830 switch (decl_context->getDeclKind()) 7831 { 7832 case clang::Decl::Namespace: 7833 case clang::Decl::TranslationUnit: 7834 { 7835 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 7836 symbol_file_dwarf->SearchDeclContext (decl_context, decl_name.getAsString().c_str(), results); 7837 } 7838 break; 7839 default: 7840 break; 7841 } 7842 } 7843 7844 bool 7845 SymbolFileDWARF::LayoutRecordType (void *baton, 7846 const clang::RecordDecl *record_decl, 7847 uint64_t &size, 7848 uint64_t &alignment, 7849 llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets, 7850 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets, 7851 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets) 7852 { 7853 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 7854 return symbol_file_dwarf->LayoutRecordType (record_decl, size, alignment, field_offsets, base_offsets, vbase_offsets); 7855 } 7856 7857 7858 bool 7859 SymbolFileDWARF::LayoutRecordType (const clang::RecordDecl *record_decl, 7860 uint64_t &bit_size, 7861 uint64_t &alignment, 7862 llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets, 7863 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets, 7864 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets) 7865 { 7866 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 7867 RecordDeclToLayoutMap::iterator pos = m_record_decl_to_layout_map.find (record_decl); 7868 bool success = false; 7869 base_offsets.clear(); 7870 vbase_offsets.clear(); 7871 if (pos != m_record_decl_to_layout_map.end()) 7872 { 7873 bit_size = pos->second.bit_size; 7874 alignment = pos->second.alignment; 7875 field_offsets.swap(pos->second.field_offsets); 7876 base_offsets.swap (pos->second.base_offsets); 7877 vbase_offsets.swap (pos->second.vbase_offsets); 7878 m_record_decl_to_layout_map.erase(pos); 7879 success = true; 7880 } 7881 else 7882 { 7883 bit_size = 0; 7884 alignment = 0; 7885 field_offsets.clear(); 7886 } 7887 7888 if (log) 7889 GetObjectFile()->GetModule()->LogMessage (log, 7890 "SymbolFileDWARF::LayoutRecordType (record_decl = %p, bit_size = %" PRIu64 ", alignment = %" PRIu64 ", field_offsets[%u],base_offsets[%u], vbase_offsets[%u]) success = %i", 7891 static_cast<const void*>(record_decl), 7892 bit_size, alignment, 7893 static_cast<uint32_t>(field_offsets.size()), 7894 static_cast<uint32_t>(base_offsets.size()), 7895 static_cast<uint32_t>(vbase_offsets.size()), 7896 success); 7897 return success; 7898 } 7899 7900 7901 SymbolFileDWARFDebugMap * 7902 SymbolFileDWARF::GetDebugMapSymfile () 7903 { 7904 if (m_debug_map_symfile == NULL && !m_debug_map_module_wp.expired()) 7905 { 7906 lldb::ModuleSP module_sp (m_debug_map_module_wp.lock()); 7907 if (module_sp) 7908 { 7909 SymbolVendor *sym_vendor = module_sp->GetSymbolVendor(); 7910 if (sym_vendor) 7911 m_debug_map_symfile = (SymbolFileDWARFDebugMap *)sym_vendor->GetSymbolFile(); 7912 } 7913 } 7914 return m_debug_map_symfile; 7915 } 7916 7917 7918