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/Basic/Builtins.h" 19 #include "clang/Basic/IdentifierTable.h" 20 #include "clang/Basic/LangOptions.h" 21 #include "clang/Basic/SourceManager.h" 22 #include "clang/Basic/TargetInfo.h" 23 #include "clang/Basic/Specifiers.h" 24 #include "clang/Sema/DeclSpec.h" 25 26 #include "llvm/Support/Casting.h" 27 28 #include "lldb/Core/Module.h" 29 #include "lldb/Core/PluginManager.h" 30 #include "lldb/Core/RegularExpression.h" 31 #include "lldb/Core/Scalar.h" 32 #include "lldb/Core/Section.h" 33 #include "lldb/Core/StreamFile.h" 34 #include "lldb/Core/StreamString.h" 35 #include "lldb/Core/Timer.h" 36 #include "lldb/Core/Value.h" 37 38 #include "lldb/Host/Host.h" 39 40 #include "lldb/Symbol/Block.h" 41 #include "lldb/Symbol/ClangExternalASTSourceCallbacks.h" 42 #include "lldb/Symbol/CompileUnit.h" 43 #include "lldb/Symbol/LineTable.h" 44 #include "lldb/Symbol/ObjectFile.h" 45 #include "lldb/Symbol/SymbolVendor.h" 46 #include "lldb/Symbol/VariableList.h" 47 48 #include "lldb/Target/ObjCLanguageRuntime.h" 49 #include "lldb/Target/CPPLanguageRuntime.h" 50 51 #include "DWARFCompileUnit.h" 52 #include "DWARFDebugAbbrev.h" 53 #include "DWARFDebugAranges.h" 54 #include "DWARFDebugInfo.h" 55 #include "DWARFDebugInfoEntry.h" 56 #include "DWARFDebugLine.h" 57 #include "DWARFDebugPubnames.h" 58 #include "DWARFDebugRanges.h" 59 #include "DWARFDIECollection.h" 60 #include "DWARFFormValue.h" 61 #include "DWARFLocationList.h" 62 #include "LogChannelDWARF.h" 63 #include "SymbolFileDWARFDebugMap.h" 64 65 #include <map> 66 67 //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN 68 69 #ifdef ENABLE_DEBUG_PRINTF 70 #include <stdio.h> 71 #define DEBUG_PRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__) 72 #else 73 #define DEBUG_PRINTF(fmt, ...) 74 #endif 75 76 #define DIE_IS_BEING_PARSED ((lldb_private::Type*)1) 77 78 using namespace lldb; 79 using namespace lldb_private; 80 81 static inline bool 82 DW_TAG_is_function_tag (dw_tag_t tag) 83 { 84 return tag == DW_TAG_subprogram || tag == DW_TAG_inlined_subroutine; 85 } 86 87 static AccessType 88 DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility) 89 { 90 switch (dwarf_accessibility) 91 { 92 case DW_ACCESS_public: return eAccessPublic; 93 case DW_ACCESS_private: return eAccessPrivate; 94 case DW_ACCESS_protected: return eAccessProtected; 95 default: break; 96 } 97 return eAccessNone; 98 } 99 100 void 101 SymbolFileDWARF::Initialize() 102 { 103 LogChannelDWARF::Initialize(); 104 PluginManager::RegisterPlugin (GetPluginNameStatic(), 105 GetPluginDescriptionStatic(), 106 CreateInstance); 107 } 108 109 void 110 SymbolFileDWARF::Terminate() 111 { 112 PluginManager::UnregisterPlugin (CreateInstance); 113 LogChannelDWARF::Initialize(); 114 } 115 116 117 const char * 118 SymbolFileDWARF::GetPluginNameStatic() 119 { 120 return "dwarf"; 121 } 122 123 const char * 124 SymbolFileDWARF::GetPluginDescriptionStatic() 125 { 126 return "DWARF and DWARF3 debug symbol file reader."; 127 } 128 129 130 SymbolFile* 131 SymbolFileDWARF::CreateInstance (ObjectFile* obj_file) 132 { 133 return new SymbolFileDWARF(obj_file); 134 } 135 136 TypeList * 137 SymbolFileDWARF::GetTypeList () 138 { 139 if (m_debug_map_symfile) 140 return m_debug_map_symfile->GetTypeList(); 141 return m_obj_file->GetModule()->GetTypeList(); 142 143 } 144 145 //---------------------------------------------------------------------- 146 // Gets the first parent that is a lexical block, function or inlined 147 // subroutine, or compile unit. 148 //---------------------------------------------------------------------- 149 static const DWARFDebugInfoEntry * 150 GetParentSymbolContextDIE(const DWARFDebugInfoEntry *child_die) 151 { 152 const DWARFDebugInfoEntry *die; 153 for (die = child_die->GetParent(); die != NULL; die = die->GetParent()) 154 { 155 dw_tag_t tag = die->Tag(); 156 157 switch (tag) 158 { 159 case DW_TAG_compile_unit: 160 case DW_TAG_subprogram: 161 case DW_TAG_inlined_subroutine: 162 case DW_TAG_lexical_block: 163 return die; 164 } 165 } 166 return NULL; 167 } 168 169 170 SymbolFileDWARF::SymbolFileDWARF(ObjectFile* objfile) : 171 SymbolFile (objfile), 172 UserID (0), // Used by SymbolFileDWARFDebugMap to when this class parses .o files to contain the .o file index/ID 173 m_debug_map_symfile (NULL), 174 m_clang_tu_decl (NULL), 175 m_flags(), 176 m_data_debug_abbrev (), 177 m_data_debug_aranges (), 178 m_data_debug_frame (), 179 m_data_debug_info (), 180 m_data_debug_line (), 181 m_data_debug_loc (), 182 m_data_debug_ranges (), 183 m_data_debug_str (), 184 m_data_apple_names (), 185 m_data_apple_types (), 186 m_data_apple_namespaces (), 187 m_abbr(), 188 m_info(), 189 m_line(), 190 m_apple_names_ap (), 191 m_apple_types_ap (), 192 m_apple_namespaces_ap (), 193 m_apple_objc_ap (), 194 m_function_basename_index(), 195 m_function_fullname_index(), 196 m_function_method_index(), 197 m_function_selector_index(), 198 m_objc_class_selectors_index(), 199 m_global_index(), 200 m_type_index(), 201 m_namespace_index(), 202 m_indexed (false), 203 m_is_external_ast_source (false), 204 m_using_apple_tables (false), 205 m_ranges(), 206 m_unique_ast_type_map () 207 { 208 } 209 210 SymbolFileDWARF::~SymbolFileDWARF() 211 { 212 if (m_is_external_ast_source) 213 m_obj_file->GetModule()->GetClangASTContext().RemoveExternalSource (); 214 } 215 216 static const ConstString & 217 GetDWARFMachOSegmentName () 218 { 219 static ConstString g_dwarf_section_name ("__DWARF"); 220 return g_dwarf_section_name; 221 } 222 223 UniqueDWARFASTTypeMap & 224 SymbolFileDWARF::GetUniqueDWARFASTTypeMap () 225 { 226 if (m_debug_map_symfile) 227 return m_debug_map_symfile->GetUniqueDWARFASTTypeMap (); 228 return m_unique_ast_type_map; 229 } 230 231 ClangASTContext & 232 SymbolFileDWARF::GetClangASTContext () 233 { 234 if (m_debug_map_symfile) 235 return m_debug_map_symfile->GetClangASTContext (); 236 237 ClangASTContext &ast = m_obj_file->GetModule()->GetClangASTContext(); 238 if (!m_is_external_ast_source) 239 { 240 m_is_external_ast_source = true; 241 llvm::OwningPtr<clang::ExternalASTSource> ast_source_ap ( 242 new ClangExternalASTSourceCallbacks (SymbolFileDWARF::CompleteTagDecl, 243 SymbolFileDWARF::CompleteObjCInterfaceDecl, 244 SymbolFileDWARF::FindExternalVisibleDeclsByName, 245 this)); 246 247 ast.SetExternalSource (ast_source_ap); 248 } 249 return ast; 250 } 251 252 void 253 SymbolFileDWARF::InitializeObject() 254 { 255 // Install our external AST source callbacks so we can complete Clang types. 256 Module *module = m_obj_file->GetModule(); 257 if (module) 258 { 259 const SectionList *section_list = m_obj_file->GetSectionList(); 260 261 const Section* section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get(); 262 263 // Memory map the DWARF mach-o segment so we have everything mmap'ed 264 // to keep our heap memory usage down. 265 if (section) 266 section->MemoryMapSectionDataFromObjectFile(m_obj_file, m_dwarf_data); 267 } 268 get_apple_names_data(); 269 if (m_data_apple_names.GetByteSize() > 0) 270 { 271 m_apple_names_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_names, get_debug_str_data(), ".apple_names")); 272 if (m_apple_names_ap->IsValid()) 273 m_using_apple_tables = true; 274 else 275 m_apple_names_ap.reset(); 276 } 277 get_apple_types_data(); 278 if (m_data_apple_types.GetByteSize() > 0) 279 { 280 m_apple_types_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_types, get_debug_str_data(), ".apple_types")); 281 if (m_apple_types_ap->IsValid()) 282 m_using_apple_tables = true; 283 else 284 m_apple_types_ap.reset(); 285 } 286 287 get_apple_namespaces_data(); 288 if (m_data_apple_namespaces.GetByteSize() > 0) 289 { 290 m_apple_namespaces_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_namespaces, get_debug_str_data(), ".apple_namespaces")); 291 if (m_apple_namespaces_ap->IsValid()) 292 m_using_apple_tables = true; 293 else 294 m_apple_namespaces_ap.reset(); 295 } 296 297 get_apple_objc_data(); 298 if (m_data_apple_objc.GetByteSize() > 0) 299 { 300 m_apple_objc_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_objc, get_debug_str_data(), ".apple_objc")); 301 if (m_apple_objc_ap->IsValid()) 302 m_using_apple_tables = true; 303 else 304 m_apple_objc_ap.reset(); 305 } 306 } 307 308 bool 309 SymbolFileDWARF::SupportedVersion(uint16_t version) 310 { 311 return version == 2 || version == 3; 312 } 313 314 uint32_t 315 SymbolFileDWARF::CalculateAbilities () 316 { 317 uint32_t abilities = 0; 318 if (m_obj_file != NULL) 319 { 320 const Section* section = NULL; 321 const SectionList *section_list = m_obj_file->GetSectionList(); 322 if (section_list == NULL) 323 return 0; 324 325 uint64_t debug_abbrev_file_size = 0; 326 uint64_t debug_aranges_file_size = 0; 327 uint64_t debug_frame_file_size = 0; 328 uint64_t debug_info_file_size = 0; 329 uint64_t debug_line_file_size = 0; 330 uint64_t debug_loc_file_size = 0; 331 uint64_t debug_macinfo_file_size = 0; 332 uint64_t debug_pubnames_file_size = 0; 333 uint64_t debug_pubtypes_file_size = 0; 334 uint64_t debug_ranges_file_size = 0; 335 uint64_t debug_str_file_size = 0; 336 337 section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get(); 338 339 if (section) 340 section_list = §ion->GetChildren (); 341 342 section = section_list->FindSectionByType (eSectionTypeDWARFDebugInfo, true).get(); 343 if (section != NULL) 344 { 345 debug_info_file_size = section->GetByteSize(); 346 347 section = section_list->FindSectionByType (eSectionTypeDWARFDebugAbbrev, true).get(); 348 if (section) 349 debug_abbrev_file_size = section->GetByteSize(); 350 else 351 m_flags.Set (flagsGotDebugAbbrevData); 352 353 section = section_list->FindSectionByType (eSectionTypeDWARFDebugAranges, true).get(); 354 if (section) 355 debug_aranges_file_size = section->GetByteSize(); 356 else 357 m_flags.Set (flagsGotDebugArangesData); 358 359 section = section_list->FindSectionByType (eSectionTypeDWARFDebugFrame, true).get(); 360 if (section) 361 debug_frame_file_size = section->GetByteSize(); 362 else 363 m_flags.Set (flagsGotDebugFrameData); 364 365 section = section_list->FindSectionByType (eSectionTypeDWARFDebugLine, true).get(); 366 if (section) 367 debug_line_file_size = section->GetByteSize(); 368 else 369 m_flags.Set (flagsGotDebugLineData); 370 371 section = section_list->FindSectionByType (eSectionTypeDWARFDebugLoc, true).get(); 372 if (section) 373 debug_loc_file_size = section->GetByteSize(); 374 else 375 m_flags.Set (flagsGotDebugLocData); 376 377 section = section_list->FindSectionByType (eSectionTypeDWARFDebugMacInfo, true).get(); 378 if (section) 379 debug_macinfo_file_size = section->GetByteSize(); 380 else 381 m_flags.Set (flagsGotDebugMacInfoData); 382 383 section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubNames, true).get(); 384 if (section) 385 debug_pubnames_file_size = section->GetByteSize(); 386 else 387 m_flags.Set (flagsGotDebugPubNamesData); 388 389 section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubTypes, true).get(); 390 if (section) 391 debug_pubtypes_file_size = section->GetByteSize(); 392 else 393 m_flags.Set (flagsGotDebugPubTypesData); 394 395 section = section_list->FindSectionByType (eSectionTypeDWARFDebugRanges, true).get(); 396 if (section) 397 debug_ranges_file_size = section->GetByteSize(); 398 else 399 m_flags.Set (flagsGotDebugRangesData); 400 401 section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get(); 402 if (section) 403 debug_str_file_size = section->GetByteSize(); 404 else 405 m_flags.Set (flagsGotDebugStrData); 406 } 407 408 if (debug_abbrev_file_size > 0 && debug_info_file_size > 0) 409 abilities |= CompileUnits | Functions | Blocks | GlobalVariables | LocalVariables | VariableTypes; 410 411 if (debug_line_file_size > 0) 412 abilities |= LineTables; 413 414 if (debug_aranges_file_size > 0) 415 abilities |= AddressAcceleratorTable; 416 417 if (debug_pubnames_file_size > 0) 418 abilities |= FunctionAcceleratorTable; 419 420 if (debug_pubtypes_file_size > 0) 421 abilities |= TypeAcceleratorTable; 422 423 if (debug_macinfo_file_size > 0) 424 abilities |= MacroInformation; 425 426 if (debug_frame_file_size > 0) 427 abilities |= CallFrameInformation; 428 } 429 return abilities; 430 } 431 432 const DataExtractor& 433 SymbolFileDWARF::GetCachedSectionData (uint32_t got_flag, SectionType sect_type, DataExtractor &data) 434 { 435 if (m_flags.IsClear (got_flag)) 436 { 437 m_flags.Set (got_flag); 438 const SectionList *section_list = m_obj_file->GetSectionList(); 439 if (section_list) 440 { 441 Section *section = section_list->FindSectionByType(sect_type, true).get(); 442 if (section) 443 { 444 // See if we memory mapped the DWARF segment? 445 if (m_dwarf_data.GetByteSize()) 446 { 447 data.SetData(m_dwarf_data, section->GetOffset (), section->GetByteSize()); 448 } 449 else 450 { 451 if (section->ReadSectionDataFromObjectFile(m_obj_file, data) == 0) 452 data.Clear(); 453 } 454 } 455 } 456 } 457 return data; 458 } 459 460 const DataExtractor& 461 SymbolFileDWARF::get_debug_abbrev_data() 462 { 463 return GetCachedSectionData (flagsGotDebugAbbrevData, eSectionTypeDWARFDebugAbbrev, m_data_debug_abbrev); 464 } 465 466 const DataExtractor& 467 SymbolFileDWARF::get_debug_aranges_data() 468 { 469 return GetCachedSectionData (flagsGotDebugArangesData, eSectionTypeDWARFDebugAranges, m_data_debug_aranges); 470 } 471 472 const DataExtractor& 473 SymbolFileDWARF::get_debug_frame_data() 474 { 475 return GetCachedSectionData (flagsGotDebugFrameData, eSectionTypeDWARFDebugFrame, m_data_debug_frame); 476 } 477 478 const DataExtractor& 479 SymbolFileDWARF::get_debug_info_data() 480 { 481 return GetCachedSectionData (flagsGotDebugInfoData, eSectionTypeDWARFDebugInfo, m_data_debug_info); 482 } 483 484 const DataExtractor& 485 SymbolFileDWARF::get_debug_line_data() 486 { 487 return GetCachedSectionData (flagsGotDebugLineData, eSectionTypeDWARFDebugLine, m_data_debug_line); 488 } 489 490 const DataExtractor& 491 SymbolFileDWARF::get_debug_loc_data() 492 { 493 return GetCachedSectionData (flagsGotDebugLocData, eSectionTypeDWARFDebugLoc, m_data_debug_loc); 494 } 495 496 const DataExtractor& 497 SymbolFileDWARF::get_debug_ranges_data() 498 { 499 return GetCachedSectionData (flagsGotDebugRangesData, eSectionTypeDWARFDebugRanges, m_data_debug_ranges); 500 } 501 502 const DataExtractor& 503 SymbolFileDWARF::get_debug_str_data() 504 { 505 return GetCachedSectionData (flagsGotDebugStrData, eSectionTypeDWARFDebugStr, m_data_debug_str); 506 } 507 508 const DataExtractor& 509 SymbolFileDWARF::get_apple_names_data() 510 { 511 return GetCachedSectionData (flagsGotAppleNamesData, eSectionTypeDWARFAppleNames, m_data_apple_names); 512 } 513 514 const DataExtractor& 515 SymbolFileDWARF::get_apple_types_data() 516 { 517 return GetCachedSectionData (flagsGotAppleTypesData, eSectionTypeDWARFAppleTypes, m_data_apple_types); 518 } 519 520 const DataExtractor& 521 SymbolFileDWARF::get_apple_namespaces_data() 522 { 523 return GetCachedSectionData (flagsGotAppleNamespacesData, eSectionTypeDWARFAppleNamespaces, m_data_apple_namespaces); 524 } 525 526 const DataExtractor& 527 SymbolFileDWARF::get_apple_objc_data() 528 { 529 return GetCachedSectionData (flagsGotAppleObjCData, eSectionTypeDWARFAppleObjC, m_data_apple_objc); 530 } 531 532 533 DWARFDebugAbbrev* 534 SymbolFileDWARF::DebugAbbrev() 535 { 536 if (m_abbr.get() == NULL) 537 { 538 const DataExtractor &debug_abbrev_data = get_debug_abbrev_data(); 539 if (debug_abbrev_data.GetByteSize() > 0) 540 { 541 m_abbr.reset(new DWARFDebugAbbrev()); 542 if (m_abbr.get()) 543 m_abbr->Parse(debug_abbrev_data); 544 } 545 } 546 return m_abbr.get(); 547 } 548 549 const DWARFDebugAbbrev* 550 SymbolFileDWARF::DebugAbbrev() const 551 { 552 return m_abbr.get(); 553 } 554 555 556 DWARFDebugInfo* 557 SymbolFileDWARF::DebugInfo() 558 { 559 if (m_info.get() == NULL) 560 { 561 Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this); 562 if (get_debug_info_data().GetByteSize() > 0) 563 { 564 m_info.reset(new DWARFDebugInfo()); 565 if (m_info.get()) 566 { 567 m_info->SetDwarfData(this); 568 } 569 } 570 } 571 return m_info.get(); 572 } 573 574 const DWARFDebugInfo* 575 SymbolFileDWARF::DebugInfo() const 576 { 577 return m_info.get(); 578 } 579 580 DWARFCompileUnit* 581 SymbolFileDWARF::GetDWARFCompileUnitForUID(lldb::user_id_t cu_uid) 582 { 583 DWARFDebugInfo* info = DebugInfo(); 584 if (info && UserIDMatches(cu_uid)) 585 return info->GetCompileUnit((dw_offset_t)cu_uid).get(); 586 return NULL; 587 } 588 589 590 DWARFDebugRanges* 591 SymbolFileDWARF::DebugRanges() 592 { 593 if (m_ranges.get() == NULL) 594 { 595 Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this); 596 if (get_debug_ranges_data().GetByteSize() > 0) 597 { 598 m_ranges.reset(new DWARFDebugRanges()); 599 if (m_ranges.get()) 600 m_ranges->Extract(this); 601 } 602 } 603 return m_ranges.get(); 604 } 605 606 const DWARFDebugRanges* 607 SymbolFileDWARF::DebugRanges() const 608 { 609 return m_ranges.get(); 610 } 611 612 bool 613 SymbolFileDWARF::ParseCompileUnit (DWARFCompileUnit* curr_cu, CompUnitSP& compile_unit_sp) 614 { 615 if (curr_cu != NULL) 616 { 617 const DWARFDebugInfoEntry * cu_die = curr_cu->GetCompileUnitDIEOnly (); 618 if (cu_die) 619 { 620 const char * cu_die_name = cu_die->GetName(this, curr_cu); 621 const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, curr_cu, DW_AT_comp_dir, NULL); 622 LanguageType cu_language = (LanguageType)cu_die->GetAttributeValueAsUnsigned(this, curr_cu, DW_AT_language, 0); 623 if (cu_die_name) 624 { 625 FileSpec cu_file_spec; 626 627 if (cu_die_name[0] == '/' || cu_comp_dir == NULL || cu_comp_dir[0] == '\0') 628 { 629 // If we have a full path to the compile unit, we don't need to resolve 630 // the file. This can be expensive e.g. when the source files are NFS mounted. 631 cu_file_spec.SetFile (cu_die_name, false); 632 } 633 else 634 { 635 std::string fullpath(cu_comp_dir); 636 if (*fullpath.rbegin() != '/') 637 fullpath += '/'; 638 fullpath += cu_die_name; 639 cu_file_spec.SetFile (fullpath.c_str(), false); 640 } 641 642 compile_unit_sp.reset(new CompileUnit (m_obj_file->GetModule(), 643 curr_cu, 644 cu_file_spec, 645 MakeUserID(curr_cu->GetOffset()), 646 cu_language)); 647 if (compile_unit_sp.get()) 648 { 649 curr_cu->SetUserData(compile_unit_sp.get()); 650 return true; 651 } 652 } 653 } 654 } 655 return false; 656 } 657 658 uint32_t 659 SymbolFileDWARF::GetNumCompileUnits() 660 { 661 DWARFDebugInfo* info = DebugInfo(); 662 if (info) 663 return info->GetNumCompileUnits(); 664 return 0; 665 } 666 667 CompUnitSP 668 SymbolFileDWARF::ParseCompileUnitAtIndex(uint32_t cu_idx) 669 { 670 CompUnitSP comp_unit; 671 DWARFDebugInfo* info = DebugInfo(); 672 if (info) 673 { 674 DWARFCompileUnit* curr_cu = info->GetCompileUnitAtIndex(cu_idx); 675 if (curr_cu != NULL) 676 { 677 // Our symbol vendor shouldn't be asking us to add a compile unit that 678 // has already been added to it, which this DWARF plug-in knows as it 679 // stores the lldb compile unit (CompileUnit) pointer in each 680 // DWARFCompileUnit object when it gets added. 681 assert(curr_cu->GetUserData() == NULL); 682 ParseCompileUnit(curr_cu, comp_unit); 683 } 684 } 685 return comp_unit; 686 } 687 688 static void 689 AddRangesToBlock (Block& block, 690 DWARFDebugRanges::RangeList& ranges, 691 addr_t block_base_addr) 692 { 693 const size_t num_ranges = ranges.GetSize(); 694 for (size_t i = 0; i<num_ranges; ++i) 695 { 696 const DWARFDebugRanges::Range &range = ranges.GetEntryRef (i); 697 const addr_t range_base = range.GetRangeBase(); 698 assert (range_base >= block_base_addr); 699 block.AddRange(Block::Range (range_base - block_base_addr, range.GetByteSize()));; 700 } 701 block.FinalizeRanges (); 702 } 703 704 705 Function * 706 SymbolFileDWARF::ParseCompileUnitFunction (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die) 707 { 708 DWARFDebugRanges::RangeList func_ranges; 709 const char *name = NULL; 710 const char *mangled = NULL; 711 int decl_file = 0; 712 int decl_line = 0; 713 int decl_column = 0; 714 int call_file = 0; 715 int call_line = 0; 716 int call_column = 0; 717 DWARFExpression frame_base; 718 719 assert (die->Tag() == DW_TAG_subprogram); 720 721 if (die->Tag() != DW_TAG_subprogram) 722 return NULL; 723 724 if (die->GetDIENamesAndRanges(this, dwarf_cu, name, mangled, func_ranges, decl_file, decl_line, decl_column, call_file, call_line, call_column, &frame_base)) 725 { 726 // Union of all ranges in the function DIE (if the function is discontiguous) 727 AddressRange func_range; 728 lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase (0); 729 lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd (0); 730 if (lowest_func_addr != LLDB_INVALID_ADDRESS && lowest_func_addr <= highest_func_addr) 731 { 732 func_range.GetBaseAddress().ResolveAddressUsingFileSections (lowest_func_addr, m_obj_file->GetSectionList()); 733 if (func_range.GetBaseAddress().IsValid()) 734 func_range.SetByteSize(highest_func_addr - lowest_func_addr); 735 } 736 737 if (func_range.GetBaseAddress().IsValid()) 738 { 739 Mangled func_name; 740 if (mangled) 741 func_name.SetValue(mangled, true); 742 else if (name) 743 func_name.SetValue(name, false); 744 745 FunctionSP func_sp; 746 std::auto_ptr<Declaration> decl_ap; 747 if (decl_file != 0 || decl_line != 0 || decl_column != 0) 748 decl_ap.reset(new Declaration (sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), 749 decl_line, 750 decl_column)); 751 752 // Supply the type _only_ if it has already been parsed 753 Type *func_type = m_die_to_type.lookup (die); 754 755 assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED); 756 757 func_range.GetBaseAddress().ResolveLinkedAddress(); 758 759 const user_id_t func_user_id = MakeUserID(die->GetOffset()); 760 func_sp.reset(new Function (sc.comp_unit, 761 func_user_id, // UserID is the DIE offset 762 func_user_id, 763 func_name, 764 func_type, 765 func_range)); // first address range 766 767 if (func_sp.get() != NULL) 768 { 769 if (frame_base.IsValid()) 770 func_sp->GetFrameBaseExpression() = frame_base; 771 sc.comp_unit->AddFunction(func_sp); 772 return func_sp.get(); 773 } 774 } 775 } 776 return NULL; 777 } 778 779 size_t 780 SymbolFileDWARF::ParseCompileUnitFunctions(const SymbolContext &sc) 781 { 782 assert (sc.comp_unit); 783 size_t functions_added = 0; 784 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID()); 785 if (dwarf_cu) 786 { 787 DWARFDIECollection function_dies; 788 const size_t num_funtions = dwarf_cu->AppendDIEsWithTag (DW_TAG_subprogram, function_dies); 789 size_t func_idx; 790 for (func_idx = 0; func_idx < num_funtions; ++func_idx) 791 { 792 const DWARFDebugInfoEntry *die = function_dies.GetDIEPtrAtIndex(func_idx); 793 if (sc.comp_unit->FindFunctionByUID (MakeUserID(die->GetOffset())).get() == NULL) 794 { 795 if (ParseCompileUnitFunction(sc, dwarf_cu, die)) 796 ++functions_added; 797 } 798 } 799 //FixupTypes(); 800 } 801 return functions_added; 802 } 803 804 bool 805 SymbolFileDWARF::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList& support_files) 806 { 807 assert (sc.comp_unit); 808 DWARFCompileUnit* curr_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID()); 809 assert (curr_cu); 810 const DWARFDebugInfoEntry * cu_die = curr_cu->GetCompileUnitDIEOnly(); 811 812 if (cu_die) 813 { 814 const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, curr_cu, DW_AT_comp_dir, NULL); 815 dw_offset_t stmt_list = cu_die->GetAttributeValueAsUnsigned(this, curr_cu, DW_AT_stmt_list, DW_INVALID_OFFSET); 816 817 // All file indexes in DWARF are one based and a file of index zero is 818 // supposed to be the compile unit itself. 819 support_files.Append (*sc.comp_unit); 820 821 return DWARFDebugLine::ParseSupportFiles(get_debug_line_data(), cu_comp_dir, stmt_list, support_files); 822 } 823 return false; 824 } 825 826 struct ParseDWARFLineTableCallbackInfo 827 { 828 LineTable* line_table; 829 const SectionList *section_list; 830 lldb::addr_t prev_sect_file_base_addr; 831 lldb::addr_t curr_sect_file_base_addr; 832 bool is_oso_for_debug_map; 833 bool prev_in_final_executable; 834 DWARFDebugLine::Row prev_row; 835 SectionSP prev_section_sp; 836 SectionSP curr_section_sp; 837 }; 838 839 //---------------------------------------------------------------------- 840 // ParseStatementTableCallback 841 //---------------------------------------------------------------------- 842 static void 843 ParseDWARFLineTableCallback(dw_offset_t offset, const DWARFDebugLine::State& state, void* userData) 844 { 845 LineTable* line_table = ((ParseDWARFLineTableCallbackInfo*)userData)->line_table; 846 if (state.row == DWARFDebugLine::State::StartParsingLineTable) 847 { 848 // Just started parsing the line table 849 } 850 else if (state.row == DWARFDebugLine::State::DoneParsingLineTable) 851 { 852 // Done parsing line table, nothing to do for the cleanup 853 } 854 else 855 { 856 ParseDWARFLineTableCallbackInfo* info = (ParseDWARFLineTableCallbackInfo*)userData; 857 // We have a new row, lets append it 858 859 if (info->curr_section_sp.get() == NULL || info->curr_section_sp->ContainsFileAddress(state.address) == false) 860 { 861 info->prev_section_sp = info->curr_section_sp; 862 info->prev_sect_file_base_addr = info->curr_sect_file_base_addr; 863 // If this is an end sequence entry, then we subtract one from the 864 // address to make sure we get an address that is not the end of 865 // a section. 866 if (state.end_sequence && state.address != 0) 867 info->curr_section_sp = info->section_list->FindSectionContainingFileAddress (state.address - 1); 868 else 869 info->curr_section_sp = info->section_list->FindSectionContainingFileAddress (state.address); 870 871 if (info->curr_section_sp.get()) 872 info->curr_sect_file_base_addr = info->curr_section_sp->GetFileAddress (); 873 else 874 info->curr_sect_file_base_addr = 0; 875 } 876 if (info->curr_section_sp.get()) 877 { 878 lldb::addr_t curr_line_section_offset = state.address - info->curr_sect_file_base_addr; 879 // Check for the fancy section magic to determine if we 880 881 if (info->is_oso_for_debug_map) 882 { 883 // When this is a debug map object file that contains DWARF 884 // (referenced from an N_OSO debug map nlist entry) we will have 885 // a file address in the file range for our section from the 886 // original .o file, and a load address in the executable that 887 // contains the debug map. 888 // 889 // If the sections for the file range and load range are 890 // different, we have a remapped section for the function and 891 // this address is resolved. If they are the same, then the 892 // function for this address didn't make it into the final 893 // executable. 894 bool curr_in_final_executable = info->curr_section_sp->GetLinkedSection () != NULL; 895 896 // If we are doing DWARF with debug map, then we need to carefully 897 // add each line table entry as there may be gaps as functions 898 // get moved around or removed. 899 if (!info->prev_row.end_sequence && info->prev_section_sp.get()) 900 { 901 if (info->prev_in_final_executable) 902 { 903 bool terminate_previous_entry = false; 904 if (!curr_in_final_executable) 905 { 906 // Check for the case where the previous line entry 907 // in a function made it into the final executable, 908 // yet the current line entry falls in a function 909 // that didn't. The line table used to be contiguous 910 // through this address range but now it isn't. We 911 // need to terminate the previous line entry so 912 // that we can reconstruct the line range correctly 913 // for it and to keep the line table correct. 914 terminate_previous_entry = true; 915 } 916 else if (info->curr_section_sp.get() != info->prev_section_sp.get()) 917 { 918 // Check for cases where the line entries used to be 919 // contiguous address ranges, but now they aren't. 920 // This can happen when order files specify the 921 // ordering of the functions. 922 lldb::addr_t prev_line_section_offset = info->prev_row.address - info->prev_sect_file_base_addr; 923 Section *curr_sect = info->curr_section_sp.get(); 924 Section *prev_sect = info->prev_section_sp.get(); 925 assert (curr_sect->GetLinkedSection()); 926 assert (prev_sect->GetLinkedSection()); 927 lldb::addr_t object_file_addr_delta = state.address - info->prev_row.address; 928 lldb::addr_t curr_linked_file_addr = curr_sect->GetLinkedFileAddress() + curr_line_section_offset; 929 lldb::addr_t prev_linked_file_addr = prev_sect->GetLinkedFileAddress() + prev_line_section_offset; 930 lldb::addr_t linked_file_addr_delta = curr_linked_file_addr - prev_linked_file_addr; 931 if (object_file_addr_delta != linked_file_addr_delta) 932 terminate_previous_entry = true; 933 } 934 935 if (terminate_previous_entry) 936 { 937 line_table->InsertLineEntry (info->prev_section_sp, 938 state.address - info->prev_sect_file_base_addr, 939 info->prev_row.line, 940 info->prev_row.column, 941 info->prev_row.file, 942 false, // is_stmt 943 false, // basic_block 944 false, // state.prologue_end 945 false, // state.epilogue_begin 946 true); // end_sequence); 947 } 948 } 949 } 950 951 if (curr_in_final_executable) 952 { 953 line_table->InsertLineEntry (info->curr_section_sp, 954 curr_line_section_offset, 955 state.line, 956 state.column, 957 state.file, 958 state.is_stmt, 959 state.basic_block, 960 state.prologue_end, 961 state.epilogue_begin, 962 state.end_sequence); 963 info->prev_section_sp = info->curr_section_sp; 964 } 965 else 966 { 967 // If the current address didn't make it into the final 968 // executable, the current section will be the __text 969 // segment in the .o file, so we need to clear this so 970 // we can catch the next function that did make it into 971 // the final executable. 972 info->prev_section_sp.reset(); 973 info->curr_section_sp.reset(); 974 } 975 976 info->prev_in_final_executable = curr_in_final_executable; 977 } 978 else 979 { 980 // We are not in an object file that contains DWARF for an 981 // N_OSO, this is just a normal DWARF file. The DWARF spec 982 // guarantees that the addresses will be in increasing order 983 // so, since we store line tables in file address order, we 984 // can always just append the line entry without needing to 985 // search for the correct insertion point (we don't need to 986 // use LineEntry::InsertLineEntry()). 987 line_table->AppendLineEntry (info->curr_section_sp, 988 curr_line_section_offset, 989 state.line, 990 state.column, 991 state.file, 992 state.is_stmt, 993 state.basic_block, 994 state.prologue_end, 995 state.epilogue_begin, 996 state.end_sequence); 997 } 998 } 999 1000 info->prev_row = state; 1001 } 1002 } 1003 1004 bool 1005 SymbolFileDWARF::ParseCompileUnitLineTable (const SymbolContext &sc) 1006 { 1007 assert (sc.comp_unit); 1008 if (sc.comp_unit->GetLineTable() != NULL) 1009 return true; 1010 1011 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID()); 1012 if (dwarf_cu) 1013 { 1014 const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->GetCompileUnitDIEOnly(); 1015 if (dwarf_cu_die) 1016 { 1017 const dw_offset_t cu_line_offset = dwarf_cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET); 1018 if (cu_line_offset != DW_INVALID_OFFSET) 1019 { 1020 std::auto_ptr<LineTable> line_table_ap(new LineTable(sc.comp_unit)); 1021 if (line_table_ap.get()) 1022 { 1023 ParseDWARFLineTableCallbackInfo info = { 1024 line_table_ap.get(), 1025 m_obj_file->GetSectionList(), 1026 0, 1027 0, 1028 m_debug_map_symfile != NULL, 1029 false, 1030 DWARFDebugLine::Row(), 1031 SectionSP(), 1032 SectionSP() 1033 }; 1034 uint32_t offset = cu_line_offset; 1035 DWARFDebugLine::ParseStatementTable(get_debug_line_data(), &offset, ParseDWARFLineTableCallback, &info); 1036 sc.comp_unit->SetLineTable(line_table_ap.release()); 1037 return true; 1038 } 1039 } 1040 } 1041 } 1042 return false; 1043 } 1044 1045 size_t 1046 SymbolFileDWARF::ParseFunctionBlocks 1047 ( 1048 const SymbolContext& sc, 1049 Block *parent_block, 1050 DWARFCompileUnit* dwarf_cu, 1051 const DWARFDebugInfoEntry *die, 1052 addr_t subprogram_low_pc, 1053 uint32_t depth 1054 ) 1055 { 1056 size_t blocks_added = 0; 1057 while (die != NULL) 1058 { 1059 dw_tag_t tag = die->Tag(); 1060 1061 switch (tag) 1062 { 1063 case DW_TAG_inlined_subroutine: 1064 case DW_TAG_subprogram: 1065 case DW_TAG_lexical_block: 1066 { 1067 Block *block = NULL; 1068 if (tag == DW_TAG_subprogram) 1069 { 1070 // Skip any DW_TAG_subprogram DIEs that are inside 1071 // of a normal or inlined functions. These will be 1072 // parsed on their own as separate entities. 1073 1074 if (depth > 0) 1075 break; 1076 1077 block = parent_block; 1078 } 1079 else 1080 { 1081 BlockSP block_sp(new Block (MakeUserID(die->GetOffset()))); 1082 parent_block->AddChild(block_sp); 1083 block = block_sp.get(); 1084 } 1085 DWARFDebugRanges::RangeList ranges; 1086 const char *name = NULL; 1087 const char *mangled_name = NULL; 1088 1089 int decl_file = 0; 1090 int decl_line = 0; 1091 int decl_column = 0; 1092 int call_file = 0; 1093 int call_line = 0; 1094 int call_column = 0; 1095 if (die->GetDIENamesAndRanges (this, 1096 dwarf_cu, 1097 name, 1098 mangled_name, 1099 ranges, 1100 decl_file, decl_line, decl_column, 1101 call_file, call_line, call_column)) 1102 { 1103 if (tag == DW_TAG_subprogram) 1104 { 1105 assert (subprogram_low_pc == LLDB_INVALID_ADDRESS); 1106 subprogram_low_pc = ranges.GetMinRangeBase(0); 1107 } 1108 else if (tag == DW_TAG_inlined_subroutine) 1109 { 1110 // We get called here for inlined subroutines in two ways. 1111 // The first time is when we are making the Function object 1112 // for this inlined concrete instance. Since we're creating a top level block at 1113 // here, the subprogram_low_pc will be LLDB_INVALID_ADDRESS. So we need to 1114 // adjust the containing address. 1115 // The second time is when we are parsing the blocks inside the function that contains 1116 // the inlined concrete instance. Since these will be blocks inside the containing "real" 1117 // function the offset will be for that function. 1118 if (subprogram_low_pc == LLDB_INVALID_ADDRESS) 1119 { 1120 subprogram_low_pc = ranges.GetMinRangeBase(0); 1121 } 1122 } 1123 1124 AddRangesToBlock (*block, ranges, subprogram_low_pc); 1125 1126 if (tag != DW_TAG_subprogram && (name != NULL || mangled_name != NULL)) 1127 { 1128 std::auto_ptr<Declaration> decl_ap; 1129 if (decl_file != 0 || decl_line != 0 || decl_column != 0) 1130 decl_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), 1131 decl_line, decl_column)); 1132 1133 std::auto_ptr<Declaration> call_ap; 1134 if (call_file != 0 || call_line != 0 || call_column != 0) 1135 call_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(call_file), 1136 call_line, call_column)); 1137 1138 block->SetInlinedFunctionInfo (name, mangled_name, decl_ap.get(), call_ap.get()); 1139 } 1140 1141 ++blocks_added; 1142 1143 if (die->HasChildren()) 1144 { 1145 blocks_added += ParseFunctionBlocks (sc, 1146 block, 1147 dwarf_cu, 1148 die->GetFirstChild(), 1149 subprogram_low_pc, 1150 depth + 1); 1151 } 1152 } 1153 } 1154 break; 1155 default: 1156 break; 1157 } 1158 1159 // Only parse siblings of the block if we are not at depth zero. A depth 1160 // of zero indicates we are currently parsing the top level 1161 // DW_TAG_subprogram DIE 1162 1163 if (depth == 0) 1164 die = NULL; 1165 else 1166 die = die->GetSibling(); 1167 } 1168 return blocks_added; 1169 } 1170 1171 bool 1172 SymbolFileDWARF::ParseTemplateParameterInfos (DWARFCompileUnit* dwarf_cu, 1173 const DWARFDebugInfoEntry *parent_die, 1174 ClangASTContext::TemplateParameterInfos &template_param_infos) 1175 { 1176 1177 if (parent_die == NULL) 1178 return NULL; 1179 1180 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); 1181 1182 Args template_parameter_names; 1183 for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild(); 1184 die != NULL; 1185 die = die->GetSibling()) 1186 { 1187 const dw_tag_t tag = die->Tag(); 1188 1189 switch (tag) 1190 { 1191 case DW_TAG_template_type_parameter: 1192 case DW_TAG_template_value_parameter: 1193 { 1194 DWARFDebugInfoEntry::Attributes attributes; 1195 const size_t num_attributes = die->GetAttributes (this, 1196 dwarf_cu, 1197 fixed_form_sizes, 1198 attributes); 1199 const char *name = NULL; 1200 Type *lldb_type = NULL; 1201 clang_type_t clang_type = NULL; 1202 uint64_t uval64 = 0; 1203 bool uval64_valid = false; 1204 if (num_attributes > 0) 1205 { 1206 DWARFFormValue form_value; 1207 for (size_t i=0; i<num_attributes; ++i) 1208 { 1209 const dw_attr_t attr = attributes.AttributeAtIndex(i); 1210 1211 switch (attr) 1212 { 1213 case DW_AT_name: 1214 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1215 name = form_value.AsCString(&get_debug_str_data()); 1216 break; 1217 1218 case DW_AT_type: 1219 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1220 { 1221 const dw_offset_t type_die_offset = form_value.Reference(dwarf_cu); 1222 lldb_type = ResolveTypeUID(type_die_offset); 1223 if (lldb_type) 1224 clang_type = lldb_type->GetClangForwardType(); 1225 } 1226 break; 1227 1228 case DW_AT_const_value: 1229 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1230 { 1231 uval64_valid = true; 1232 uval64 = form_value.Unsigned(); 1233 } 1234 break; 1235 default: 1236 break; 1237 } 1238 } 1239 1240 if (name && lldb_type && clang_type) 1241 { 1242 bool is_signed = false; 1243 template_param_infos.names.push_back(name); 1244 clang::QualType clang_qual_type (clang::QualType::getFromOpaquePtr (clang_type)); 1245 if (tag == DW_TAG_template_value_parameter && ClangASTContext::IsIntegerType (clang_type, is_signed) && uval64_valid) 1246 { 1247 llvm::APInt apint (lldb_type->GetByteSize() * 8, uval64, is_signed); 1248 template_param_infos.args.push_back (clang::TemplateArgument (llvm::APSInt(apint), clang_qual_type)); 1249 } 1250 else 1251 { 1252 template_param_infos.args.push_back (clang::TemplateArgument (clang_qual_type)); 1253 } 1254 } 1255 else 1256 { 1257 return false; 1258 } 1259 1260 } 1261 } 1262 break; 1263 1264 default: 1265 break; 1266 } 1267 } 1268 if (template_param_infos.args.empty()) 1269 return false; 1270 return template_param_infos.args.size() == template_param_infos.names.size(); 1271 } 1272 1273 clang::ClassTemplateDecl * 1274 SymbolFileDWARF::ParseClassTemplateDecl (clang::DeclContext *decl_ctx, 1275 lldb::AccessType access_type, 1276 const char *parent_name, 1277 int tag_decl_kind, 1278 const ClangASTContext::TemplateParameterInfos &template_param_infos) 1279 { 1280 if (template_param_infos.IsValid()) 1281 { 1282 std::string template_basename(parent_name); 1283 template_basename.erase (template_basename.find('<')); 1284 ClangASTContext &ast = GetClangASTContext(); 1285 1286 return ast.CreateClassTemplateDecl (decl_ctx, 1287 access_type, 1288 template_basename.c_str(), 1289 tag_decl_kind, 1290 template_param_infos); 1291 } 1292 return NULL; 1293 } 1294 1295 size_t 1296 SymbolFileDWARF::ParseChildMembers 1297 ( 1298 const SymbolContext& sc, 1299 DWARFCompileUnit* dwarf_cu, 1300 const DWARFDebugInfoEntry *parent_die, 1301 clang_type_t class_clang_type, 1302 const LanguageType class_language, 1303 std::vector<clang::CXXBaseSpecifier *>& base_classes, 1304 std::vector<int>& member_accessibilities, 1305 DWARFDIECollection& member_function_dies, 1306 AccessType& default_accessibility, 1307 bool &is_a_class 1308 ) 1309 { 1310 if (parent_die == NULL) 1311 return 0; 1312 1313 size_t count = 0; 1314 const DWARFDebugInfoEntry *die; 1315 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); 1316 uint32_t member_idx = 0; 1317 1318 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 1319 { 1320 dw_tag_t tag = die->Tag(); 1321 1322 switch (tag) 1323 { 1324 case DW_TAG_member: 1325 { 1326 DWARFDebugInfoEntry::Attributes attributes; 1327 const size_t num_attributes = die->GetAttributes (this, 1328 dwarf_cu, 1329 fixed_form_sizes, 1330 attributes); 1331 if (num_attributes > 0) 1332 { 1333 Declaration decl; 1334 //DWARFExpression location; 1335 const char *name = NULL; 1336 const char *prop_name = NULL; 1337 const char *prop_getter_name = NULL; 1338 const char *prop_setter_name = NULL; 1339 uint32_t prop_attributes = 0; 1340 1341 1342 bool is_artificial = false; 1343 lldb::user_id_t encoding_uid = LLDB_INVALID_UID; 1344 AccessType accessibility = eAccessNone; 1345 //off_t member_offset = 0; 1346 size_t byte_size = 0; 1347 size_t bit_offset = 0; 1348 size_t bit_size = 0; 1349 uint32_t i; 1350 for (i=0; i<num_attributes && !is_artificial; ++i) 1351 { 1352 const dw_attr_t attr = attributes.AttributeAtIndex(i); 1353 DWARFFormValue form_value; 1354 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1355 { 1356 switch (attr) 1357 { 1358 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 1359 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 1360 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 1361 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; 1362 case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break; 1363 case DW_AT_bit_offset: bit_offset = form_value.Unsigned(); break; 1364 case DW_AT_bit_size: bit_size = form_value.Unsigned(); break; 1365 case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; 1366 case DW_AT_data_member_location: 1367 // if (form_value.BlockData()) 1368 // { 1369 // Value initialValue(0); 1370 // Value memberOffset(0); 1371 // const DataExtractor& debug_info_data = get_debug_info_data(); 1372 // uint32_t block_length = form_value.Unsigned(); 1373 // uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 1374 // if (DWARFExpression::Evaluate(NULL, NULL, debug_info_data, NULL, NULL, block_offset, block_length, eRegisterKindDWARF, &initialValue, memberOffset, NULL)) 1375 // { 1376 // member_offset = memberOffset.ResolveValue(NULL, NULL).UInt(); 1377 // } 1378 // } 1379 break; 1380 1381 case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType (form_value.Unsigned()); break; 1382 case DW_AT_artificial: is_artificial = form_value.Unsigned() != 0; break; 1383 case DW_AT_declaration: 1384 case DW_AT_description: 1385 case DW_AT_mutable: 1386 case DW_AT_visibility: 1387 1388 case DW_AT_APPLE_property_name: prop_name = form_value.AsCString(&get_debug_str_data()); break; 1389 case DW_AT_APPLE_property_getter: prop_getter_name = form_value.AsCString(&get_debug_str_data()); break; 1390 case DW_AT_APPLE_property_setter: prop_setter_name = form_value.AsCString(&get_debug_str_data()); break; 1391 case DW_AT_APPLE_property_attribute: prop_attributes = form_value.Unsigned(); break; 1392 1393 default: 1394 case DW_AT_sibling: 1395 break; 1396 } 1397 } 1398 } 1399 1400 // Clang has a DWARF generation bug where sometimes it 1401 // represents fields that are references with bad byte size 1402 // and bit size/offset information such as: 1403 // 1404 // DW_AT_byte_size( 0x00 ) 1405 // DW_AT_bit_size( 0x40 ) 1406 // DW_AT_bit_offset( 0xffffffffffffffc0 ) 1407 // 1408 // So check the bit offset to make sure it is sane, and if 1409 // the values are not sane, remove them. If we don't do this 1410 // then we will end up with a crash if we try to use this 1411 // type in an expression when clang becomes unhappy with its 1412 // recycled debug info. 1413 1414 if (bit_offset > 128) 1415 { 1416 bit_size = 0; 1417 bit_offset = 0; 1418 } 1419 1420 // FIXME: Make Clang ignore Objective-C accessibility for expressions 1421 if (class_language == eLanguageTypeObjC || 1422 class_language == eLanguageTypeObjC_plus_plus) 1423 accessibility = eAccessNone; 1424 1425 if (member_idx == 0 && !is_artificial && name && (strstr (name, "_vptr$") == name)) 1426 { 1427 // Not all compilers will mark the vtable pointer 1428 // member as artificial (llvm-gcc). We can't have 1429 // the virtual members in our classes otherwise it 1430 // throws off all child offsets since we end up 1431 // having and extra pointer sized member in our 1432 // class layouts. 1433 is_artificial = true; 1434 } 1435 1436 if (is_artificial == false) 1437 { 1438 Type *member_type = ResolveTypeUID(encoding_uid); 1439 clang::FieldDecl *field_decl = NULL; 1440 if (member_type) 1441 { 1442 if (accessibility == eAccessNone) 1443 accessibility = default_accessibility; 1444 member_accessibilities.push_back(accessibility); 1445 1446 field_decl = GetClangASTContext().AddFieldToRecordType (class_clang_type, 1447 name, 1448 member_type->GetClangLayoutType(), 1449 accessibility, 1450 bit_size); 1451 } 1452 else 1453 { 1454 if (name) 1455 ReportError ("0x%8.8llx: DW_TAG_member '%s' refers to type 0x%8.8llx which was unable to be parsed", 1456 MakeUserID(die->GetOffset()), 1457 name, 1458 encoding_uid); 1459 else 1460 ReportError ("0x%8.8llx: DW_TAG_member refers to type 0x%8.8llx which was unable to be parsed", 1461 MakeUserID(die->GetOffset()), 1462 encoding_uid); 1463 } 1464 1465 if (prop_name != NULL) 1466 { 1467 1468 clang::ObjCIvarDecl *ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl); 1469 assert (ivar_decl != NULL); 1470 1471 1472 GetClangASTContext().AddObjCClassProperty (class_clang_type, 1473 prop_name, 1474 0, 1475 ivar_decl, 1476 prop_setter_name, 1477 prop_getter_name, 1478 prop_attributes); 1479 } 1480 } 1481 } 1482 ++member_idx; 1483 } 1484 break; 1485 1486 case DW_TAG_subprogram: 1487 // Let the type parsing code handle this one for us. 1488 member_function_dies.Append (die); 1489 break; 1490 1491 case DW_TAG_inheritance: 1492 { 1493 is_a_class = true; 1494 if (default_accessibility == eAccessNone) 1495 default_accessibility = eAccessPrivate; 1496 // TODO: implement DW_TAG_inheritance type parsing 1497 DWARFDebugInfoEntry::Attributes attributes; 1498 const size_t num_attributes = die->GetAttributes (this, 1499 dwarf_cu, 1500 fixed_form_sizes, 1501 attributes); 1502 if (num_attributes > 0) 1503 { 1504 Declaration decl; 1505 DWARFExpression location; 1506 lldb::user_id_t encoding_uid = LLDB_INVALID_UID; 1507 AccessType accessibility = default_accessibility; 1508 bool is_virtual = false; 1509 bool is_base_of_class = true; 1510 off_t member_offset = 0; 1511 uint32_t i; 1512 for (i=0; i<num_attributes; ++i) 1513 { 1514 const dw_attr_t attr = attributes.AttributeAtIndex(i); 1515 DWARFFormValue form_value; 1516 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1517 { 1518 switch (attr) 1519 { 1520 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 1521 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 1522 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 1523 case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break; 1524 case DW_AT_data_member_location: 1525 if (form_value.BlockData()) 1526 { 1527 Value initialValue(0); 1528 Value memberOffset(0); 1529 const DataExtractor& debug_info_data = get_debug_info_data(); 1530 uint32_t block_length = form_value.Unsigned(); 1531 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 1532 if (DWARFExpression::Evaluate (NULL, 1533 NULL, 1534 NULL, 1535 NULL, 1536 NULL, 1537 debug_info_data, 1538 block_offset, 1539 block_length, 1540 eRegisterKindDWARF, 1541 &initialValue, 1542 memberOffset, 1543 NULL)) 1544 { 1545 member_offset = memberOffset.ResolveValue(NULL, NULL).UInt(); 1546 } 1547 } 1548 break; 1549 1550 case DW_AT_accessibility: 1551 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); 1552 break; 1553 1554 case DW_AT_virtuality: is_virtual = form_value.Unsigned() != 0; break; 1555 default: 1556 case DW_AT_sibling: 1557 break; 1558 } 1559 } 1560 } 1561 1562 Type *base_class_type = ResolveTypeUID(encoding_uid); 1563 assert(base_class_type); 1564 1565 clang_type_t base_class_clang_type = base_class_type->GetClangFullType(); 1566 assert (base_class_clang_type); 1567 if (class_language == eLanguageTypeObjC) 1568 { 1569 GetClangASTContext().SetObjCSuperClass(class_clang_type, base_class_clang_type); 1570 } 1571 else 1572 { 1573 base_classes.push_back (GetClangASTContext().CreateBaseClassSpecifier (base_class_clang_type, 1574 accessibility, 1575 is_virtual, 1576 is_base_of_class)); 1577 } 1578 } 1579 } 1580 break; 1581 1582 default: 1583 break; 1584 } 1585 } 1586 return count; 1587 } 1588 1589 1590 clang::DeclContext* 1591 SymbolFileDWARF::GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid) 1592 { 1593 DWARFDebugInfo* debug_info = DebugInfo(); 1594 if (debug_info && UserIDMatches(type_uid)) 1595 { 1596 DWARFCompileUnitSP cu_sp; 1597 const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(type_uid, &cu_sp); 1598 if (die) 1599 return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL); 1600 } 1601 return NULL; 1602 } 1603 1604 clang::DeclContext* 1605 SymbolFileDWARF::GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid) 1606 { 1607 if (UserIDMatches(type_uid)) 1608 return GetClangDeclContextForDIEOffset (sc, type_uid); 1609 return NULL; 1610 } 1611 1612 Type* 1613 SymbolFileDWARF::ResolveTypeUID (lldb::user_id_t type_uid) 1614 { 1615 if (UserIDMatches(type_uid)) 1616 { 1617 DWARFDebugInfo* debug_info = DebugInfo(); 1618 if (debug_info) 1619 { 1620 DWARFCompileUnitSP cu_sp; 1621 const DWARFDebugInfoEntry* type_die = debug_info->GetDIEPtr(type_uid, &cu_sp); 1622 const bool assert_not_being_parsed = true; 1623 return ResolveTypeUID (cu_sp.get(), type_die, assert_not_being_parsed); 1624 } 1625 } 1626 return NULL; 1627 } 1628 1629 Type* 1630 SymbolFileDWARF::ResolveTypeUID (DWARFCompileUnit* cu, const DWARFDebugInfoEntry* die, bool assert_not_being_parsed) 1631 { 1632 if (die != NULL) 1633 { 1634 LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 1635 if (log) 1636 LogMessage (log.get(), "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s'", 1637 die->GetOffset(), 1638 DW_TAG_value_to_name(die->Tag()), 1639 die->GetName(this, cu)); 1640 1641 // We might be coming in in the middle of a type tree (a class 1642 // withing a class, an enum within a class), so parse any needed 1643 // parent DIEs before we get to this one... 1644 const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die); 1645 switch (decl_ctx_die->Tag()) 1646 { 1647 case DW_TAG_structure_type: 1648 case DW_TAG_union_type: 1649 case DW_TAG_class_type: 1650 { 1651 // Get the type, which could be a forward declaration 1652 if (log) 1653 LogMessage (log.get(), "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent forward type for 0x%8.8x", 1654 die->GetOffset(), 1655 DW_TAG_value_to_name(die->Tag()), 1656 die->GetName(this, cu), 1657 decl_ctx_die->GetOffset()); 1658 1659 Type *parent_type = ResolveTypeUID (cu, decl_ctx_die, assert_not_being_parsed); 1660 if (DW_TAG_is_function_tag(die->Tag())) 1661 { 1662 if (log) 1663 LogMessage (log.get(), "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent full type for 0x%8.8x since die is a function", 1664 die->GetOffset(), 1665 DW_TAG_value_to_name(die->Tag()), 1666 die->GetName(this, cu), 1667 decl_ctx_die->GetOffset()); 1668 // Ask the type to complete itself if it already hasn't since if we 1669 // want a function (method or static) from a class, the class must 1670 // create itself and add it's own methods and class functions. 1671 if (parent_type) 1672 parent_type->GetClangFullType(); 1673 } 1674 } 1675 break; 1676 1677 default: 1678 break; 1679 } 1680 return ResolveType (cu, die); 1681 } 1682 return NULL; 1683 } 1684 1685 // This function is used when SymbolFileDWARFDebugMap owns a bunch of 1686 // SymbolFileDWARF objects to detect if this DWARF file is the one that 1687 // can resolve a clang_type. 1688 bool 1689 SymbolFileDWARF::HasForwardDeclForClangType (lldb::clang_type_t clang_type) 1690 { 1691 clang_type_t clang_type_no_qualifiers = ClangASTType::RemoveFastQualifiers(clang_type); 1692 const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers); 1693 return die != NULL; 1694 } 1695 1696 1697 lldb::clang_type_t 1698 SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (lldb::clang_type_t clang_type) 1699 { 1700 // We have a struct/union/class/enum that needs to be fully resolved. 1701 clang_type_t clang_type_no_qualifiers = ClangASTType::RemoveFastQualifiers(clang_type); 1702 const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers); 1703 if (die == NULL) 1704 { 1705 // We have already resolved this type... 1706 return clang_type; 1707 } 1708 // Once we start resolving this type, remove it from the forward declaration 1709 // map in case anyone child members or other types require this type to get resolved. 1710 // The type will get resolved when all of the calls to SymbolFileDWARF::ResolveClangOpaqueTypeDefinition 1711 // are done. 1712 m_forward_decl_clang_type_to_die.erase (clang_type_no_qualifiers); 1713 1714 1715 // Disable external storage for this type so we don't get anymore 1716 // clang::ExternalASTSource queries for this type. 1717 ClangASTContext::SetHasExternalStorage (clang_type, false); 1718 1719 DWARFDebugInfo* debug_info = DebugInfo(); 1720 1721 DWARFCompileUnit *curr_cu = debug_info->GetCompileUnitContainingDIE (die->GetOffset()).get(); 1722 Type *type = m_die_to_type.lookup (die); 1723 1724 const dw_tag_t tag = die->Tag(); 1725 1726 LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 1727 if (log) 1728 LogMessage (log.get(), 1729 "0x%8.8llx: %s '%s' resolving forward declaration...\n", 1730 MakeUserID(die->GetOffset()), 1731 DW_TAG_value_to_name(tag), 1732 type->GetName().AsCString()); 1733 assert (clang_type); 1734 DWARFDebugInfoEntry::Attributes attributes; 1735 1736 ClangASTContext &ast = GetClangASTContext(); 1737 1738 switch (tag) 1739 { 1740 case DW_TAG_structure_type: 1741 case DW_TAG_union_type: 1742 case DW_TAG_class_type: 1743 ast.StartTagDeclarationDefinition (clang_type); 1744 if (die->HasChildren()) 1745 { 1746 LanguageType class_language = eLanguageTypeUnknown; 1747 bool is_objc_class = ClangASTContext::IsObjCClassType (clang_type); 1748 if (is_objc_class) 1749 class_language = eLanguageTypeObjC; 1750 1751 int tag_decl_kind = -1; 1752 AccessType default_accessibility = eAccessNone; 1753 if (tag == DW_TAG_structure_type) 1754 { 1755 tag_decl_kind = clang::TTK_Struct; 1756 default_accessibility = eAccessPublic; 1757 } 1758 else if (tag == DW_TAG_union_type) 1759 { 1760 tag_decl_kind = clang::TTK_Union; 1761 default_accessibility = eAccessPublic; 1762 } 1763 else if (tag == DW_TAG_class_type) 1764 { 1765 tag_decl_kind = clang::TTK_Class; 1766 default_accessibility = eAccessPrivate; 1767 } 1768 1769 SymbolContext sc(GetCompUnitForDWARFCompUnit(curr_cu)); 1770 std::vector<clang::CXXBaseSpecifier *> base_classes; 1771 std::vector<int> member_accessibilities; 1772 bool is_a_class = false; 1773 // Parse members and base classes first 1774 DWARFDIECollection member_function_dies; 1775 1776 ParseChildMembers (sc, 1777 curr_cu, 1778 die, 1779 clang_type, 1780 class_language, 1781 base_classes, 1782 member_accessibilities, 1783 member_function_dies, 1784 default_accessibility, 1785 is_a_class); 1786 1787 // Now parse any methods if there were any... 1788 size_t num_functions = member_function_dies.Size(); 1789 if (num_functions > 0) 1790 { 1791 for (size_t i=0; i<num_functions; ++i) 1792 { 1793 ResolveType(curr_cu, member_function_dies.GetDIEPtrAtIndex(i)); 1794 } 1795 } 1796 1797 if (class_language == eLanguageTypeObjC) 1798 { 1799 std::string class_str (ClangASTType::GetTypeNameForOpaqueQualType(clang_type)); 1800 if (!class_str.empty()) 1801 { 1802 1803 DIEArray method_die_offsets; 1804 if (m_using_apple_tables) 1805 { 1806 if (m_apple_objc_ap.get()) 1807 m_apple_objc_ap->FindByName(class_str.c_str(), method_die_offsets); 1808 } 1809 else 1810 { 1811 if (!m_indexed) 1812 Index (); 1813 1814 ConstString class_name (class_str.c_str()); 1815 m_objc_class_selectors_index.Find (class_name, method_die_offsets); 1816 } 1817 1818 if (!method_die_offsets.empty()) 1819 { 1820 DWARFDebugInfo* debug_info = DebugInfo(); 1821 1822 DWARFCompileUnit* method_cu = NULL; 1823 const size_t num_matches = method_die_offsets.size(); 1824 for (size_t i=0; i<num_matches; ++i) 1825 { 1826 const dw_offset_t die_offset = method_die_offsets[i]; 1827 DWARFDebugInfoEntry *method_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &method_cu); 1828 1829 if (method_die) 1830 ResolveType (method_cu, method_die); 1831 else 1832 { 1833 if (m_using_apple_tables) 1834 { 1835 ReportError (".apple_objc accelerator table had bad die 0x%8.8x for '%s'\n", 1836 die_offset, class_str.c_str()); 1837 } 1838 } 1839 } 1840 } 1841 } 1842 } 1843 1844 // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we 1845 // need to tell the clang type it is actually a class. 1846 if (class_language != eLanguageTypeObjC) 1847 { 1848 if (is_a_class && tag_decl_kind != clang::TTK_Class) 1849 ast.SetTagTypeKind (clang_type, clang::TTK_Class); 1850 } 1851 1852 // Since DW_TAG_structure_type gets used for both classes 1853 // and structures, we may need to set any DW_TAG_member 1854 // fields to have a "private" access if none was specified. 1855 // When we parsed the child members we tracked that actual 1856 // accessibility value for each DW_TAG_member in the 1857 // "member_accessibilities" array. If the value for the 1858 // member is zero, then it was set to the "default_accessibility" 1859 // which for structs was "public". Below we correct this 1860 // by setting any fields to "private" that weren't correctly 1861 // set. 1862 if (is_a_class && !member_accessibilities.empty()) 1863 { 1864 // This is a class and all members that didn't have 1865 // their access specified are private. 1866 ast.SetDefaultAccessForRecordFields (clang_type, 1867 eAccessPrivate, 1868 &member_accessibilities.front(), 1869 member_accessibilities.size()); 1870 } 1871 1872 if (!base_classes.empty()) 1873 { 1874 ast.SetBaseClassesForClassType (clang_type, 1875 &base_classes.front(), 1876 base_classes.size()); 1877 1878 // Clang will copy each CXXBaseSpecifier in "base_classes" 1879 // so we have to free them all. 1880 ClangASTContext::DeleteBaseClassSpecifiers (&base_classes.front(), 1881 base_classes.size()); 1882 } 1883 1884 } 1885 ast.CompleteTagDeclarationDefinition (clang_type); 1886 return clang_type; 1887 1888 case DW_TAG_enumeration_type: 1889 ast.StartTagDeclarationDefinition (clang_type); 1890 if (die->HasChildren()) 1891 { 1892 SymbolContext sc(GetCompUnitForDWARFCompUnit(curr_cu)); 1893 ParseChildEnumerators(sc, clang_type, type->GetByteSize(), curr_cu, die); 1894 } 1895 ast.CompleteTagDeclarationDefinition (clang_type); 1896 return clang_type; 1897 1898 default: 1899 assert(false && "not a forward clang type decl!"); 1900 break; 1901 } 1902 return NULL; 1903 } 1904 1905 Type* 1906 SymbolFileDWARF::ResolveType (DWARFCompileUnit* curr_cu, const DWARFDebugInfoEntry* type_die, bool assert_not_being_parsed) 1907 { 1908 if (type_die != NULL) 1909 { 1910 Type *type = m_die_to_type.lookup (type_die); 1911 1912 if (type == NULL) 1913 type = GetTypeForDIE (curr_cu, type_die).get(); 1914 1915 if (assert_not_being_parsed) 1916 assert (type != DIE_IS_BEING_PARSED); 1917 return type; 1918 } 1919 return NULL; 1920 } 1921 1922 CompileUnit* 1923 SymbolFileDWARF::GetCompUnitForDWARFCompUnit (DWARFCompileUnit* curr_cu, uint32_t cu_idx) 1924 { 1925 // Check if the symbol vendor already knows about this compile unit? 1926 if (curr_cu->GetUserData() == NULL) 1927 { 1928 // The symbol vendor doesn't know about this compile unit, we 1929 // need to parse and add it to the symbol vendor object. 1930 CompUnitSP dc_cu; 1931 ParseCompileUnit(curr_cu, dc_cu); 1932 if (dc_cu.get()) 1933 { 1934 // Figure out the compile unit index if we weren't given one 1935 if (cu_idx == UINT32_MAX) 1936 DebugInfo()->GetCompileUnit(curr_cu->GetOffset(), &cu_idx); 1937 1938 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(dc_cu, cu_idx); 1939 1940 if (m_debug_map_symfile) 1941 m_debug_map_symfile->SetCompileUnit(this, dc_cu); 1942 } 1943 } 1944 return (CompileUnit*)curr_cu->GetUserData(); 1945 } 1946 1947 bool 1948 SymbolFileDWARF::GetFunction (DWARFCompileUnit* curr_cu, const DWARFDebugInfoEntry* func_die, SymbolContext& sc) 1949 { 1950 sc.Clear(); 1951 // Check if the symbol vendor already knows about this compile unit? 1952 sc.comp_unit = GetCompUnitForDWARFCompUnit(curr_cu, UINT32_MAX); 1953 1954 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(func_die->GetOffset())).get(); 1955 if (sc.function == NULL) 1956 sc.function = ParseCompileUnitFunction(sc, curr_cu, func_die); 1957 1958 if (sc.function) 1959 { 1960 sc.module_sp = sc.function->CalculateSymbolContextModule(); 1961 return true; 1962 } 1963 1964 return false; 1965 } 1966 1967 uint32_t 1968 SymbolFileDWARF::ResolveSymbolContext (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc) 1969 { 1970 Timer scoped_timer(__PRETTY_FUNCTION__, 1971 "SymbolFileDWARF::ResolveSymbolContext (so_addr = { section = %p, offset = 0x%llx }, resolve_scope = 0x%8.8x)", 1972 so_addr.GetSection(), 1973 so_addr.GetOffset(), 1974 resolve_scope); 1975 uint32_t resolved = 0; 1976 if (resolve_scope & ( eSymbolContextCompUnit | 1977 eSymbolContextFunction | 1978 eSymbolContextBlock | 1979 eSymbolContextLineEntry)) 1980 { 1981 lldb::addr_t file_vm_addr = so_addr.GetFileAddress(); 1982 1983 DWARFDebugInfo* debug_info = DebugInfo(); 1984 if (debug_info) 1985 { 1986 dw_offset_t cu_offset = debug_info->GetCompileUnitAranges().FindAddress(file_vm_addr); 1987 if (cu_offset != DW_INVALID_OFFSET) 1988 { 1989 uint32_t cu_idx; 1990 DWARFCompileUnit* curr_cu = debug_info->GetCompileUnit(cu_offset, &cu_idx).get(); 1991 if (curr_cu) 1992 { 1993 sc.comp_unit = GetCompUnitForDWARFCompUnit(curr_cu, cu_idx); 1994 assert(sc.comp_unit != NULL); 1995 resolved |= eSymbolContextCompUnit; 1996 1997 if (resolve_scope & eSymbolContextLineEntry) 1998 { 1999 LineTable *line_table = sc.comp_unit->GetLineTable(); 2000 if (line_table != NULL) 2001 { 2002 if (so_addr.IsLinkedAddress()) 2003 { 2004 Address linked_addr (so_addr); 2005 linked_addr.ResolveLinkedAddress(); 2006 if (line_table->FindLineEntryByAddress (linked_addr, sc.line_entry)) 2007 { 2008 resolved |= eSymbolContextLineEntry; 2009 } 2010 } 2011 else if (line_table->FindLineEntryByAddress (so_addr, sc.line_entry)) 2012 { 2013 resolved |= eSymbolContextLineEntry; 2014 } 2015 } 2016 } 2017 2018 if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock)) 2019 { 2020 DWARFDebugInfoEntry *function_die = NULL; 2021 DWARFDebugInfoEntry *block_die = NULL; 2022 if (resolve_scope & eSymbolContextBlock) 2023 { 2024 curr_cu->LookupAddress(file_vm_addr, &function_die, &block_die); 2025 } 2026 else 2027 { 2028 curr_cu->LookupAddress(file_vm_addr, &function_die, NULL); 2029 } 2030 2031 if (function_die != NULL) 2032 { 2033 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get(); 2034 if (sc.function == NULL) 2035 sc.function = ParseCompileUnitFunction(sc, curr_cu, function_die); 2036 } 2037 2038 if (sc.function != NULL) 2039 { 2040 resolved |= eSymbolContextFunction; 2041 2042 if (resolve_scope & eSymbolContextBlock) 2043 { 2044 Block& block = sc.function->GetBlock (true); 2045 2046 if (block_die != NULL) 2047 sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset())); 2048 else 2049 sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset())); 2050 if (sc.block) 2051 resolved |= eSymbolContextBlock; 2052 } 2053 } 2054 } 2055 } 2056 } 2057 } 2058 } 2059 return resolved; 2060 } 2061 2062 2063 2064 uint32_t 2065 SymbolFileDWARF::ResolveSymbolContext(const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list) 2066 { 2067 const uint32_t prev_size = sc_list.GetSize(); 2068 if (resolve_scope & eSymbolContextCompUnit) 2069 { 2070 DWARFDebugInfo* debug_info = DebugInfo(); 2071 if (debug_info) 2072 { 2073 uint32_t cu_idx; 2074 DWARFCompileUnit* curr_cu = NULL; 2075 2076 for (cu_idx = 0; (curr_cu = debug_info->GetCompileUnitAtIndex(cu_idx)) != NULL; ++cu_idx) 2077 { 2078 CompileUnit *dc_cu = GetCompUnitForDWARFCompUnit(curr_cu, cu_idx); 2079 bool file_spec_matches_cu_file_spec = dc_cu != NULL && FileSpec::Compare(file_spec, *dc_cu, false) == 0; 2080 if (check_inlines || file_spec_matches_cu_file_spec) 2081 { 2082 SymbolContext sc (m_obj_file->GetModule()); 2083 sc.comp_unit = GetCompUnitForDWARFCompUnit(curr_cu, cu_idx); 2084 assert(sc.comp_unit != NULL); 2085 2086 uint32_t file_idx = UINT32_MAX; 2087 2088 // If we are looking for inline functions only and we don't 2089 // find it in the support files, we are done. 2090 if (check_inlines) 2091 { 2092 file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true); 2093 if (file_idx == UINT32_MAX) 2094 continue; 2095 } 2096 2097 if (line != 0) 2098 { 2099 LineTable *line_table = sc.comp_unit->GetLineTable(); 2100 2101 if (line_table != NULL && line != 0) 2102 { 2103 // We will have already looked up the file index if 2104 // we are searching for inline entries. 2105 if (!check_inlines) 2106 file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true); 2107 2108 if (file_idx != UINT32_MAX) 2109 { 2110 uint32_t found_line; 2111 uint32_t line_idx = line_table->FindLineEntryIndexByFileIndex (0, file_idx, line, false, &sc.line_entry); 2112 found_line = sc.line_entry.line; 2113 2114 while (line_idx != UINT32_MAX) 2115 { 2116 sc.function = NULL; 2117 sc.block = NULL; 2118 if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock)) 2119 { 2120 const lldb::addr_t file_vm_addr = sc.line_entry.range.GetBaseAddress().GetFileAddress(); 2121 if (file_vm_addr != LLDB_INVALID_ADDRESS) 2122 { 2123 DWARFDebugInfoEntry *function_die = NULL; 2124 DWARFDebugInfoEntry *block_die = NULL; 2125 curr_cu->LookupAddress(file_vm_addr, &function_die, resolve_scope & eSymbolContextBlock ? &block_die : NULL); 2126 2127 if (function_die != NULL) 2128 { 2129 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get(); 2130 if (sc.function == NULL) 2131 sc.function = ParseCompileUnitFunction(sc, curr_cu, function_die); 2132 } 2133 2134 if (sc.function != NULL) 2135 { 2136 Block& block = sc.function->GetBlock (true); 2137 2138 if (block_die != NULL) 2139 sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset())); 2140 else 2141 sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset())); 2142 } 2143 } 2144 } 2145 2146 sc_list.Append(sc); 2147 line_idx = line_table->FindLineEntryIndexByFileIndex (line_idx + 1, file_idx, found_line, true, &sc.line_entry); 2148 } 2149 } 2150 } 2151 else if (file_spec_matches_cu_file_spec && !check_inlines) 2152 { 2153 // only append the context if we aren't looking for inline call sites 2154 // by file and line and if the file spec matches that of the compile unit 2155 sc_list.Append(sc); 2156 } 2157 } 2158 else if (file_spec_matches_cu_file_spec && !check_inlines) 2159 { 2160 // only append the context if we aren't looking for inline call sites 2161 // by file and line and if the file spec matches that of the compile unit 2162 sc_list.Append(sc); 2163 } 2164 2165 if (!check_inlines) 2166 break; 2167 } 2168 } 2169 } 2170 } 2171 return sc_list.GetSize() - prev_size; 2172 } 2173 2174 void 2175 SymbolFileDWARF::Index () 2176 { 2177 if (m_indexed) 2178 return; 2179 m_indexed = true; 2180 Timer scoped_timer (__PRETTY_FUNCTION__, 2181 "SymbolFileDWARF::Index (%s)", 2182 GetObjectFile()->GetFileSpec().GetFilename().AsCString()); 2183 2184 DWARFDebugInfo* debug_info = DebugInfo(); 2185 if (debug_info) 2186 { 2187 uint32_t cu_idx = 0; 2188 const uint32_t num_compile_units = GetNumCompileUnits(); 2189 for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) 2190 { 2191 DWARFCompileUnit* curr_cu = debug_info->GetCompileUnitAtIndex(cu_idx); 2192 2193 bool clear_dies = curr_cu->ExtractDIEsIfNeeded (false) > 1; 2194 2195 curr_cu->Index (cu_idx, 2196 m_function_basename_index, 2197 m_function_fullname_index, 2198 m_function_method_index, 2199 m_function_selector_index, 2200 m_objc_class_selectors_index, 2201 m_global_index, 2202 m_type_index, 2203 m_namespace_index); 2204 2205 // Keep memory down by clearing DIEs if this generate function 2206 // caused them to be parsed 2207 if (clear_dies) 2208 curr_cu->ClearDIEs (true); 2209 } 2210 2211 m_function_basename_index.Finalize(); 2212 m_function_fullname_index.Finalize(); 2213 m_function_method_index.Finalize(); 2214 m_function_selector_index.Finalize(); 2215 m_objc_class_selectors_index.Finalize(); 2216 m_global_index.Finalize(); 2217 m_type_index.Finalize(); 2218 m_namespace_index.Finalize(); 2219 2220 #if defined (ENABLE_DEBUG_PRINTF) 2221 StreamFile s(stdout, false); 2222 s.Printf ("DWARF index for '%s/%s':", 2223 GetObjectFile()->GetFileSpec().GetDirectory().AsCString(), 2224 GetObjectFile()->GetFileSpec().GetFilename().AsCString()); 2225 s.Printf("\nFunction basenames:\n"); m_function_basename_index.Dump (&s); 2226 s.Printf("\nFunction fullnames:\n"); m_function_fullname_index.Dump (&s); 2227 s.Printf("\nFunction methods:\n"); m_function_method_index.Dump (&s); 2228 s.Printf("\nFunction selectors:\n"); m_function_selector_index.Dump (&s); 2229 s.Printf("\nObjective C class selectors:\n"); m_objc_class_selectors_index.Dump (&s); 2230 s.Printf("\nGlobals and statics:\n"); m_global_index.Dump (&s); 2231 s.Printf("\nTypes:\n"); m_type_index.Dump (&s); 2232 s.Printf("\nNamepaces:\n"); m_namespace_index.Dump (&s); 2233 #endif 2234 } 2235 } 2236 2237 bool 2238 SymbolFileDWARF::NamespaceDeclMatchesThisSymbolFile (const ClangNamespaceDecl *namespace_decl) 2239 { 2240 if (namespace_decl == NULL) 2241 { 2242 // Invalid namespace decl which means we aren't matching only things 2243 // in this symbol file, so return true to indicate it matches this 2244 // symbol file. 2245 return true; 2246 } 2247 2248 clang::ASTContext *namespace_ast = namespace_decl->GetASTContext(); 2249 2250 if (namespace_ast == NULL) 2251 return true; // No AST in the "namespace_decl", return true since it 2252 // could then match any symbol file, including this one 2253 2254 if (namespace_ast == GetClangASTContext().getASTContext()) 2255 return true; // The ASTs match, return true 2256 2257 // The namespace AST was valid, and it does not match... 2258 LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 2259 2260 if (log) 2261 LogMessage(log.get(), "Valid namespace does not match symbol file"); 2262 2263 return false; 2264 } 2265 2266 bool 2267 SymbolFileDWARF::DIEIsInNamespace (const ClangNamespaceDecl *namespace_decl, 2268 DWARFCompileUnit* cu, 2269 const DWARFDebugInfoEntry* die) 2270 { 2271 // No namespace specified, so the answesr i 2272 if (namespace_decl == NULL) 2273 return true; 2274 2275 LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 2276 2277 const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die); 2278 if (decl_ctx_die) 2279 { 2280 2281 clang::NamespaceDecl *clang_namespace_decl = namespace_decl->GetNamespaceDecl(); 2282 if (clang_namespace_decl) 2283 { 2284 if (decl_ctx_die->Tag() != DW_TAG_namespace) 2285 { 2286 if (log) 2287 LogMessage(log.get(), "Found a match, but its parent is not a namespace"); 2288 return false; 2289 } 2290 2291 DeclContextToDIEMap::iterator pos = m_decl_ctx_to_die.find(clang_namespace_decl); 2292 2293 if (pos == m_decl_ctx_to_die.end()) 2294 { 2295 if (log) 2296 LogMessage(log.get(), "Found a match in a namespace, but its parent is not the requested namespace"); 2297 2298 return false; 2299 } 2300 2301 return pos->second.count (decl_ctx_die); 2302 } 2303 else 2304 { 2305 // We have a namespace_decl that was not NULL but it contained 2306 // a NULL "clang::NamespaceDecl", so this means the global namespace 2307 // So as long the the contained decl context DIE isn't a namespace 2308 // we should be ok. 2309 if (decl_ctx_die->Tag() != DW_TAG_namespace) 2310 return true; 2311 } 2312 } 2313 2314 if (log) 2315 LogMessage(log.get(), "Found a match, but its parent doesn't exist"); 2316 2317 return false; 2318 } 2319 uint32_t 2320 SymbolFileDWARF::FindGlobalVariables (const ConstString &name, const lldb_private::ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables) 2321 { 2322 LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 2323 2324 if (log) 2325 { 2326 LogMessage (log.get(), 2327 "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables)", 2328 name.GetCString(), 2329 namespace_decl, 2330 append, 2331 max_matches); 2332 } 2333 2334 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) 2335 return 0; 2336 2337 DWARFDebugInfo* info = DebugInfo(); 2338 if (info == NULL) 2339 return 0; 2340 2341 // If we aren't appending the results to this list, then clear the list 2342 if (!append) 2343 variables.Clear(); 2344 2345 // Remember how many variables are in the list before we search in case 2346 // we are appending the results to a variable list. 2347 const uint32_t original_size = variables.GetSize(); 2348 2349 DIEArray die_offsets; 2350 2351 if (m_using_apple_tables) 2352 { 2353 if (m_apple_names_ap.get()) 2354 { 2355 const char *name_cstr = name.GetCString(); 2356 const char *base_name_start; 2357 const char *base_name_end = NULL; 2358 2359 if (!CPPLanguageRuntime::StripNamespacesFromVariableName(name_cstr, base_name_start, base_name_end)) 2360 base_name_start = name_cstr; 2361 2362 m_apple_names_ap->FindByName (base_name_start, die_offsets); 2363 } 2364 } 2365 else 2366 { 2367 // Index the DWARF if we haven't already 2368 if (!m_indexed) 2369 Index (); 2370 2371 m_global_index.Find (name, die_offsets); 2372 } 2373 2374 const size_t num_matches = die_offsets.size(); 2375 if (num_matches) 2376 { 2377 SymbolContext sc; 2378 sc.module_sp = m_obj_file->GetModule(); 2379 assert (sc.module_sp); 2380 2381 DWARFDebugInfo* debug_info = DebugInfo(); 2382 DWARFCompileUnit* dwarf_cu = NULL; 2383 const DWARFDebugInfoEntry* die = NULL; 2384 for (size_t i=0; i<num_matches; ++i) 2385 { 2386 const dw_offset_t die_offset = die_offsets[i]; 2387 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 2388 2389 if (die) 2390 { 2391 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 2392 assert(sc.comp_unit != NULL); 2393 2394 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 2395 continue; 2396 2397 ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables); 2398 2399 if (variables.GetSize() - original_size >= max_matches) 2400 break; 2401 } 2402 else 2403 { 2404 if (m_using_apple_tables) 2405 { 2406 ReportError (".apple_names accelerator table had bad die 0x%8.8x for '%s'\n", 2407 die_offset, name.GetCString()); 2408 } 2409 } 2410 } 2411 } 2412 2413 // Return the number of variable that were appended to the list 2414 return variables.GetSize() - original_size; 2415 } 2416 2417 uint32_t 2418 SymbolFileDWARF::FindGlobalVariables(const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables) 2419 { 2420 LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 2421 2422 if (log) 2423 { 2424 LogMessage (log.get(), 2425 "SymbolFileDWARF::FindGlobalVariables (regex=\"%s\", append=%u, max_matches=%u, variables)", 2426 regex.GetText(), 2427 append, 2428 max_matches); 2429 } 2430 2431 DWARFDebugInfo* info = DebugInfo(); 2432 if (info == NULL) 2433 return 0; 2434 2435 // If we aren't appending the results to this list, then clear the list 2436 if (!append) 2437 variables.Clear(); 2438 2439 // Remember how many variables are in the list before we search in case 2440 // we are appending the results to a variable list. 2441 const uint32_t original_size = variables.GetSize(); 2442 2443 DIEArray die_offsets; 2444 2445 if (m_using_apple_tables) 2446 { 2447 if (m_apple_names_ap.get()) 2448 { 2449 DWARFMappedHash::DIEInfoArray hash_data_array; 2450 if (m_apple_names_ap->AppendAllDIEsThatMatchingRegex (regex, hash_data_array)) 2451 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); 2452 } 2453 } 2454 else 2455 { 2456 // Index the DWARF if we haven't already 2457 if (!m_indexed) 2458 Index (); 2459 2460 m_global_index.Find (regex, die_offsets); 2461 } 2462 2463 SymbolContext sc; 2464 sc.module_sp = m_obj_file->GetModule(); 2465 assert (sc.module_sp); 2466 2467 DWARFCompileUnit* dwarf_cu = NULL; 2468 const DWARFDebugInfoEntry* die = NULL; 2469 const size_t num_matches = die_offsets.size(); 2470 if (num_matches) 2471 { 2472 DWARFDebugInfo* debug_info = DebugInfo(); 2473 for (size_t i=0; i<num_matches; ++i) 2474 { 2475 const dw_offset_t die_offset = die_offsets[i]; 2476 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 2477 2478 if (die) 2479 { 2480 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 2481 2482 ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables); 2483 2484 if (variables.GetSize() - original_size >= max_matches) 2485 break; 2486 } 2487 else 2488 { 2489 if (m_using_apple_tables) 2490 { 2491 ReportError (".apple_names accelerator table had bad die 0x%8.8x for regex '%s'\n", 2492 die_offset, regex.GetText()); 2493 } 2494 } 2495 } 2496 } 2497 2498 // Return the number of variable that were appended to the list 2499 return variables.GetSize() - original_size; 2500 } 2501 2502 2503 bool 2504 SymbolFileDWARF::ResolveFunction (dw_offset_t die_offset, 2505 DWARFCompileUnit *&dwarf_cu, 2506 SymbolContextList& sc_list) 2507 { 2508 const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 2509 return ResolveFunction (dwarf_cu, die, sc_list); 2510 } 2511 2512 2513 bool 2514 SymbolFileDWARF::ResolveFunction (DWARFCompileUnit *cu, 2515 const DWARFDebugInfoEntry *die, 2516 SymbolContextList& sc_list) 2517 { 2518 SymbolContext sc; 2519 2520 if (die == NULL) 2521 return false; 2522 2523 // If we were passed a die that is not a function, just return false... 2524 if (die->Tag() != DW_TAG_subprogram && die->Tag() != DW_TAG_inlined_subroutine) 2525 return false; 2526 2527 const DWARFDebugInfoEntry* inlined_die = NULL; 2528 if (die->Tag() == DW_TAG_inlined_subroutine) 2529 { 2530 inlined_die = die; 2531 2532 while ((die = die->GetParent()) != NULL) 2533 { 2534 if (die->Tag() == DW_TAG_subprogram) 2535 break; 2536 } 2537 } 2538 assert (die->Tag() == DW_TAG_subprogram); 2539 if (GetFunction (cu, die, sc)) 2540 { 2541 Address addr; 2542 // Parse all blocks if needed 2543 if (inlined_die) 2544 { 2545 sc.block = sc.function->GetBlock (true).FindBlockByID (MakeUserID(inlined_die->GetOffset())); 2546 assert (sc.block != NULL); 2547 if (sc.block->GetStartAddress (addr) == false) 2548 addr.Clear(); 2549 } 2550 else 2551 { 2552 sc.block = NULL; 2553 addr = sc.function->GetAddressRange().GetBaseAddress(); 2554 } 2555 2556 if (addr.IsValid()) 2557 { 2558 sc_list.Append(sc); 2559 return true; 2560 } 2561 } 2562 2563 return false; 2564 } 2565 2566 void 2567 SymbolFileDWARF::FindFunctions (const ConstString &name, 2568 const NameToDIE &name_to_die, 2569 SymbolContextList& sc_list) 2570 { 2571 DIEArray die_offsets; 2572 if (name_to_die.Find (name, die_offsets)) 2573 { 2574 ParseFunctions (die_offsets, sc_list); 2575 } 2576 } 2577 2578 2579 void 2580 SymbolFileDWARF::FindFunctions (const RegularExpression ®ex, 2581 const NameToDIE &name_to_die, 2582 SymbolContextList& sc_list) 2583 { 2584 DIEArray die_offsets; 2585 if (name_to_die.Find (regex, die_offsets)) 2586 { 2587 ParseFunctions (die_offsets, sc_list); 2588 } 2589 } 2590 2591 2592 void 2593 SymbolFileDWARF::FindFunctions (const RegularExpression ®ex, 2594 const DWARFMappedHash::MemoryTable &memory_table, 2595 SymbolContextList& sc_list) 2596 { 2597 DIEArray die_offsets; 2598 DWARFMappedHash::DIEInfoArray hash_data_array; 2599 if (memory_table.AppendAllDIEsThatMatchingRegex (regex, hash_data_array)) 2600 { 2601 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); 2602 ParseFunctions (die_offsets, sc_list); 2603 } 2604 } 2605 2606 void 2607 SymbolFileDWARF::ParseFunctions (const DIEArray &die_offsets, 2608 SymbolContextList& sc_list) 2609 { 2610 const size_t num_matches = die_offsets.size(); 2611 if (num_matches) 2612 { 2613 SymbolContext sc; 2614 2615 DWARFCompileUnit* dwarf_cu = NULL; 2616 for (size_t i=0; i<num_matches; ++i) 2617 { 2618 const dw_offset_t die_offset = die_offsets[i]; 2619 ResolveFunction (die_offset, dwarf_cu, sc_list); 2620 } 2621 } 2622 } 2623 2624 bool 2625 SymbolFileDWARF::FunctionDieMatchesPartialName (const DWARFDebugInfoEntry* die, 2626 const DWARFCompileUnit *dwarf_cu, 2627 uint32_t name_type_mask, 2628 const char *partial_name, 2629 const char *base_name_start, 2630 const char *base_name_end) 2631 { 2632 // If we are looking only for methods, throw away all the ones that aren't in C++ classes: 2633 if (name_type_mask == eFunctionNameTypeMethod 2634 || name_type_mask == eFunctionNameTypeBase) 2635 { 2636 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIEOffset(die->GetOffset()); 2637 if (!containing_decl_ctx) 2638 return false; 2639 2640 bool is_cxx_method = DeclKindIsCXXClass(containing_decl_ctx->getDeclKind()); 2641 2642 if (!is_cxx_method && name_type_mask == eFunctionNameTypeMethod) 2643 return false; 2644 if (is_cxx_method && name_type_mask == eFunctionNameTypeBase) 2645 return false; 2646 } 2647 2648 // Now we need to check whether the name we got back for this type matches the extra specifications 2649 // that were in the name we're looking up: 2650 if (base_name_start != partial_name || *base_name_end != '\0') 2651 { 2652 // First see if the stuff to the left matches the full name. To do that let's see if 2653 // we can pull out the mips linkage name attribute: 2654 2655 Mangled best_name; 2656 2657 DWARFDebugInfoEntry::Attributes attributes; 2658 die->GetAttributes(this, dwarf_cu, NULL, attributes); 2659 uint32_t idx = attributes.FindAttributeIndex(DW_AT_MIPS_linkage_name); 2660 if (idx != UINT32_MAX) 2661 { 2662 DWARFFormValue form_value; 2663 if (attributes.ExtractFormValueAtIndex(this, idx, form_value)) 2664 { 2665 const char *name = form_value.AsCString(&get_debug_str_data()); 2666 best_name.SetValue (name, true); 2667 } 2668 } 2669 if (best_name) 2670 { 2671 const char *demangled = best_name.GetDemangledName().GetCString(); 2672 if (demangled) 2673 { 2674 std::string name_no_parens(partial_name, base_name_end - partial_name); 2675 if (strstr (demangled, name_no_parens.c_str()) == NULL) 2676 return false; 2677 } 2678 } 2679 } 2680 2681 return true; 2682 } 2683 2684 uint32_t 2685 SymbolFileDWARF::FindFunctions (const ConstString &name, 2686 const lldb_private::ClangNamespaceDecl *namespace_decl, 2687 uint32_t name_type_mask, 2688 bool append, 2689 SymbolContextList& sc_list) 2690 { 2691 Timer scoped_timer (__PRETTY_FUNCTION__, 2692 "SymbolFileDWARF::FindFunctions (name = '%s')", 2693 name.AsCString()); 2694 2695 LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 2696 2697 if (log) 2698 { 2699 LogMessage (log.get(), 2700 "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list)", 2701 name.GetCString(), 2702 name_type_mask, 2703 append); 2704 } 2705 2706 // If we aren't appending the results to this list, then clear the list 2707 if (!append) 2708 sc_list.Clear(); 2709 2710 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) 2711 return 0; 2712 2713 // If name is empty then we won't find anything. 2714 if (name.IsEmpty()) 2715 return 0; 2716 2717 // Remember how many sc_list are in the list before we search in case 2718 // we are appending the results to a variable list. 2719 2720 const uint32_t original_size = sc_list.GetSize(); 2721 2722 const char *name_cstr = name.GetCString(); 2723 uint32_t effective_name_type_mask = eFunctionNameTypeNone; 2724 const char *base_name_start = name_cstr; 2725 const char *base_name_end = name_cstr + strlen(name_cstr); 2726 2727 if (name_type_mask & eFunctionNameTypeAuto) 2728 { 2729 if (CPPLanguageRuntime::IsCPPMangledName (name_cstr)) 2730 effective_name_type_mask = eFunctionNameTypeFull; 2731 else if (ObjCLanguageRuntime::IsPossibleObjCMethodName (name_cstr)) 2732 effective_name_type_mask = eFunctionNameTypeFull; 2733 else 2734 { 2735 if (ObjCLanguageRuntime::IsPossibleObjCSelector(name_cstr)) 2736 effective_name_type_mask |= eFunctionNameTypeSelector; 2737 2738 if (CPPLanguageRuntime::IsPossibleCPPCall(name_cstr, base_name_start, base_name_end)) 2739 effective_name_type_mask |= (eFunctionNameTypeMethod | eFunctionNameTypeBase); 2740 } 2741 } 2742 else 2743 { 2744 effective_name_type_mask = name_type_mask; 2745 if (effective_name_type_mask & eFunctionNameTypeMethod || name_type_mask & eFunctionNameTypeBase) 2746 { 2747 // If they've asked for a CPP method or function name and it can't be that, we don't 2748 // even need to search for CPP methods or names. 2749 if (!CPPLanguageRuntime::IsPossibleCPPCall(name_cstr, base_name_start, base_name_end)) 2750 { 2751 effective_name_type_mask &= ~(eFunctionNameTypeMethod | eFunctionNameTypeBase); 2752 if (effective_name_type_mask == eFunctionNameTypeNone) 2753 return 0; 2754 } 2755 } 2756 2757 if (effective_name_type_mask & eFunctionNameTypeSelector) 2758 { 2759 if (!ObjCLanguageRuntime::IsPossibleObjCSelector(name_cstr)) 2760 { 2761 effective_name_type_mask &= ~(eFunctionNameTypeSelector); 2762 if (effective_name_type_mask == eFunctionNameTypeNone) 2763 return 0; 2764 } 2765 } 2766 } 2767 2768 DWARFDebugInfo* info = DebugInfo(); 2769 if (info == NULL) 2770 return 0; 2771 2772 DWARFCompileUnit *dwarf_cu = NULL; 2773 if (m_using_apple_tables) 2774 { 2775 if (m_apple_names_ap.get()) 2776 { 2777 2778 DIEArray die_offsets; 2779 2780 uint32_t num_matches = 0; 2781 2782 if (effective_name_type_mask & eFunctionNameTypeFull) 2783 { 2784 // If they asked for the full name, match what they typed. At some point we may 2785 // want to canonicalize this (strip double spaces, etc. For now, we just add all the 2786 // dies that we find by exact match. 2787 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets); 2788 for (uint32_t i = 0; i < num_matches; i++) 2789 { 2790 const dw_offset_t die_offset = die_offsets[i]; 2791 const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 2792 if (die) 2793 { 2794 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 2795 continue; 2796 2797 ResolveFunction (dwarf_cu, die, sc_list); 2798 } 2799 else 2800 { 2801 ReportError (".apple_names accelerator table had bad die 0x%8.8x for '%s'\n", 2802 die_offset, name_cstr); 2803 } 2804 } 2805 } 2806 else 2807 { 2808 if (effective_name_type_mask & eFunctionNameTypeSelector) 2809 { 2810 if (namespace_decl && *namespace_decl) 2811 return 0; // no selectors in namespaces 2812 2813 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets); 2814 // Now make sure these are actually ObjC methods. In this case we can simply look up the name, 2815 // and if it is an ObjC method name, we're good. 2816 2817 for (uint32_t i = 0; i < num_matches; i++) 2818 { 2819 const dw_offset_t die_offset = die_offsets[i]; 2820 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 2821 if (die) 2822 { 2823 const char *die_name = die->GetName(this, dwarf_cu); 2824 if (ObjCLanguageRuntime::IsPossibleObjCMethodName(die_name)) 2825 ResolveFunction (dwarf_cu, die, sc_list); 2826 } 2827 else 2828 { 2829 ReportError (".apple_names accelerator table had bad die 0x%8.8x for '%s'\n", 2830 die_offset, name_cstr); 2831 } 2832 } 2833 die_offsets.clear(); 2834 } 2835 2836 if (effective_name_type_mask & eFunctionNameTypeMethod 2837 || effective_name_type_mask & eFunctionNameTypeBase) 2838 { 2839 if ((effective_name_type_mask & eFunctionNameTypeMethod) && 2840 (namespace_decl && *namespace_decl)) 2841 return 0; // no methods in namespaces 2842 2843 // The apple_names table stores just the "base name" of C++ methods in the table. So we have to 2844 // extract the base name, look that up, and if there is any other information in the name we were 2845 // passed in we have to post-filter based on that. 2846 2847 // FIXME: Arrange the logic above so that we don't calculate the base name twice: 2848 std::string base_name(base_name_start, base_name_end - base_name_start); 2849 num_matches = m_apple_names_ap->FindByName (base_name.c_str(), die_offsets); 2850 2851 for (uint32_t i = 0; i < num_matches; i++) 2852 { 2853 const dw_offset_t die_offset = die_offsets[i]; 2854 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 2855 if (die) 2856 { 2857 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 2858 continue; 2859 2860 if (!FunctionDieMatchesPartialName(die, 2861 dwarf_cu, 2862 effective_name_type_mask, 2863 name_cstr, 2864 base_name_start, 2865 base_name_end)) 2866 continue; 2867 2868 // If we get to here, the die is good, and we should add it: 2869 ResolveFunction (dwarf_cu, die, sc_list); 2870 } 2871 else 2872 { 2873 ReportError (".apple_names accelerator table had bad die 0x%8.8x for '%s'\n", 2874 die_offset, name_cstr); 2875 } 2876 } 2877 die_offsets.clear(); 2878 } 2879 } 2880 } 2881 } 2882 else 2883 { 2884 2885 // Index the DWARF if we haven't already 2886 if (!m_indexed) 2887 Index (); 2888 2889 if (name_type_mask & eFunctionNameTypeFull) 2890 FindFunctions (name, m_function_fullname_index, sc_list); 2891 2892 std::string base_name(base_name_start, base_name_end - base_name_start); 2893 ConstString base_name_const(base_name.c_str()); 2894 DIEArray die_offsets; 2895 DWARFCompileUnit *dwarf_cu = NULL; 2896 2897 if (effective_name_type_mask & eFunctionNameTypeBase) 2898 { 2899 uint32_t num_base = m_function_basename_index.Find(base_name_const, die_offsets); 2900 for (uint32_t i = 0; i < num_base; i++) 2901 { 2902 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu); 2903 if (die) 2904 { 2905 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 2906 continue; 2907 2908 if (!FunctionDieMatchesPartialName(die, 2909 dwarf_cu, 2910 effective_name_type_mask, 2911 name_cstr, 2912 base_name_start, 2913 base_name_end)) 2914 continue; 2915 2916 // If we get to here, the die is good, and we should add it: 2917 ResolveFunction (dwarf_cu, die, sc_list); 2918 } 2919 } 2920 die_offsets.clear(); 2921 } 2922 2923 if (effective_name_type_mask & eFunctionNameTypeMethod) 2924 { 2925 if (namespace_decl && *namespace_decl) 2926 return 0; // no methods in namespaces 2927 2928 uint32_t num_base = m_function_method_index.Find(base_name_const, die_offsets); 2929 { 2930 for (uint32_t i = 0; i < num_base; i++) 2931 { 2932 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu); 2933 if (die) 2934 { 2935 if (!FunctionDieMatchesPartialName(die, 2936 dwarf_cu, 2937 effective_name_type_mask, 2938 name_cstr, 2939 base_name_start, 2940 base_name_end)) 2941 continue; 2942 2943 // If we get to here, the die is good, and we should add it: 2944 ResolveFunction (dwarf_cu, die, sc_list); 2945 } 2946 } 2947 } 2948 die_offsets.clear(); 2949 } 2950 2951 if ((effective_name_type_mask & eFunctionNameTypeSelector) && (!namespace_decl || !*namespace_decl)) 2952 { 2953 FindFunctions (name, m_function_selector_index, sc_list); 2954 } 2955 2956 } 2957 2958 // Return the number of variable that were appended to the list 2959 return sc_list.GetSize() - original_size; 2960 } 2961 2962 uint32_t 2963 SymbolFileDWARF::FindFunctions(const RegularExpression& regex, bool append, SymbolContextList& sc_list) 2964 { 2965 Timer scoped_timer (__PRETTY_FUNCTION__, 2966 "SymbolFileDWARF::FindFunctions (regex = '%s')", 2967 regex.GetText()); 2968 2969 LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 2970 2971 if (log) 2972 { 2973 LogMessage (log.get(), 2974 "SymbolFileDWARF::FindFunctions (regex=\"%s\", append=%u, sc_list)", 2975 regex.GetText(), 2976 append); 2977 } 2978 2979 2980 // If we aren't appending the results to this list, then clear the list 2981 if (!append) 2982 sc_list.Clear(); 2983 2984 // Remember how many sc_list are in the list before we search in case 2985 // we are appending the results to a variable list. 2986 uint32_t original_size = sc_list.GetSize(); 2987 2988 if (m_using_apple_tables) 2989 { 2990 if (m_apple_names_ap.get()) 2991 FindFunctions (regex, *m_apple_names_ap, sc_list); 2992 } 2993 else 2994 { 2995 // Index the DWARF if we haven't already 2996 if (!m_indexed) 2997 Index (); 2998 2999 FindFunctions (regex, m_function_basename_index, sc_list); 3000 3001 FindFunctions (regex, m_function_fullname_index, sc_list); 3002 } 3003 3004 // Return the number of variable that were appended to the list 3005 return sc_list.GetSize() - original_size; 3006 } 3007 3008 uint32_t 3009 SymbolFileDWARF::FindTypes (const SymbolContext& sc, 3010 const ConstString &name, 3011 const lldb_private::ClangNamespaceDecl *namespace_decl, 3012 bool append, 3013 uint32_t max_matches, 3014 TypeList& types) 3015 { 3016 DWARFDebugInfo* info = DebugInfo(); 3017 if (info == NULL) 3018 return 0; 3019 3020 LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3021 3022 if (log) 3023 { 3024 LogMessage (log.get(), 3025 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", append=%u, max_matches=%u, type_list)", 3026 name.GetCString(), 3027 append, 3028 max_matches); 3029 } 3030 3031 // If we aren't appending the results to this list, then clear the list 3032 if (!append) 3033 types.Clear(); 3034 3035 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) 3036 return 0; 3037 3038 DIEArray die_offsets; 3039 3040 if (m_using_apple_tables) 3041 { 3042 if (m_apple_types_ap.get()) 3043 { 3044 const char *name_cstr = name.GetCString(); 3045 m_apple_types_ap->FindByName (name_cstr, die_offsets); 3046 } 3047 } 3048 else 3049 { 3050 if (!m_indexed) 3051 Index (); 3052 3053 m_type_index.Find (name, die_offsets); 3054 } 3055 3056 const size_t num_matches = die_offsets.size(); 3057 3058 if (num_matches) 3059 { 3060 const uint32_t initial_types_size = types.GetSize(); 3061 DWARFCompileUnit* dwarf_cu = NULL; 3062 const DWARFDebugInfoEntry* die = NULL; 3063 DWARFDebugInfo* debug_info = DebugInfo(); 3064 for (size_t i=0; i<num_matches; ++i) 3065 { 3066 const dw_offset_t die_offset = die_offsets[i]; 3067 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3068 3069 if (die) 3070 { 3071 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 3072 continue; 3073 3074 Type *matching_type = ResolveType (dwarf_cu, die); 3075 if (matching_type) 3076 { 3077 // We found a type pointer, now find the shared pointer form our type list 3078 types.InsertUnique (TypeSP (matching_type)); 3079 if (types.GetSize() >= max_matches) 3080 break; 3081 } 3082 } 3083 else 3084 { 3085 if (m_using_apple_tables) 3086 { 3087 ReportError (".apple_types accelerator table had bad die 0x%8.8x for '%s'\n", 3088 die_offset, name.GetCString()); 3089 } 3090 } 3091 3092 } 3093 return types.GetSize() - initial_types_size; 3094 } 3095 return 0; 3096 } 3097 3098 3099 ClangNamespaceDecl 3100 SymbolFileDWARF::FindNamespace (const SymbolContext& sc, 3101 const ConstString &name, 3102 const lldb_private::ClangNamespaceDecl *parent_namespace_decl) 3103 { 3104 LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3105 3106 if (log) 3107 { 3108 LogMessage (log.get(), 3109 "SymbolFileDWARF::FindNamespace (sc, name=\"%s\")", 3110 name.GetCString()); 3111 } 3112 3113 if (!NamespaceDeclMatchesThisSymbolFile(parent_namespace_decl)) 3114 return ClangNamespaceDecl(); 3115 3116 ClangNamespaceDecl namespace_decl; 3117 DWARFDebugInfo* info = DebugInfo(); 3118 if (info) 3119 { 3120 DIEArray die_offsets; 3121 3122 // Index if we already haven't to make sure the compile units 3123 // get indexed and make their global DIE index list 3124 if (m_using_apple_tables) 3125 { 3126 if (m_apple_namespaces_ap.get()) 3127 { 3128 const char *name_cstr = name.GetCString(); 3129 m_apple_namespaces_ap->FindByName (name_cstr, die_offsets); 3130 } 3131 } 3132 else 3133 { 3134 if (!m_indexed) 3135 Index (); 3136 3137 m_namespace_index.Find (name, die_offsets); 3138 } 3139 3140 DWARFCompileUnit* dwarf_cu = NULL; 3141 const DWARFDebugInfoEntry* die = NULL; 3142 const size_t num_matches = die_offsets.size(); 3143 if (num_matches) 3144 { 3145 DWARFDebugInfo* debug_info = DebugInfo(); 3146 for (size_t i=0; i<num_matches; ++i) 3147 { 3148 const dw_offset_t die_offset = die_offsets[i]; 3149 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3150 3151 if (die) 3152 { 3153 if (parent_namespace_decl && !DIEIsInNamespace (parent_namespace_decl, dwarf_cu, die)) 3154 continue; 3155 3156 clang::NamespaceDecl *clang_namespace_decl = ResolveNamespaceDIE (dwarf_cu, die); 3157 if (clang_namespace_decl) 3158 { 3159 namespace_decl.SetASTContext (GetClangASTContext().getASTContext()); 3160 namespace_decl.SetNamespaceDecl (clang_namespace_decl); 3161 break; 3162 } 3163 } 3164 else 3165 { 3166 if (m_using_apple_tables) 3167 { 3168 ReportError (".apple_namespaces accelerator table had bad die 0x%8.8x for '%s'\n", 3169 die_offset, name.GetCString()); 3170 } 3171 } 3172 3173 } 3174 } 3175 } 3176 return namespace_decl; 3177 } 3178 3179 uint32_t 3180 SymbolFileDWARF::FindTypes(std::vector<dw_offset_t> die_offsets, uint32_t max_matches, TypeList& types) 3181 { 3182 // Remember how many sc_list are in the list before we search in case 3183 // we are appending the results to a variable list. 3184 uint32_t original_size = types.GetSize(); 3185 3186 const uint32_t num_die_offsets = die_offsets.size(); 3187 // Parse all of the types we found from the pubtypes matches 3188 uint32_t i; 3189 uint32_t num_matches = 0; 3190 for (i = 0; i < num_die_offsets; ++i) 3191 { 3192 Type *matching_type = ResolveTypeUID (die_offsets[i]); 3193 if (matching_type) 3194 { 3195 // We found a type pointer, now find the shared pointer form our type list 3196 types.InsertUnique (TypeSP (matching_type)); 3197 ++num_matches; 3198 if (num_matches >= max_matches) 3199 break; 3200 } 3201 } 3202 3203 // Return the number of variable that were appended to the list 3204 return types.GetSize() - original_size; 3205 } 3206 3207 3208 size_t 3209 SymbolFileDWARF::ParseChildParameters (const SymbolContext& sc, 3210 clang::DeclContext *containing_decl_ctx, 3211 TypeSP& type_sp, 3212 DWARFCompileUnit* dwarf_cu, 3213 const DWARFDebugInfoEntry *parent_die, 3214 bool skip_artificial, 3215 bool &is_static, 3216 TypeList* type_list, 3217 std::vector<clang_type_t>& function_param_types, 3218 std::vector<clang::ParmVarDecl*>& function_param_decls, 3219 unsigned &type_quals) 3220 { 3221 if (parent_die == NULL) 3222 return 0; 3223 3224 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); 3225 3226 size_t arg_idx = 0; 3227 const DWARFDebugInfoEntry *die; 3228 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 3229 { 3230 dw_tag_t tag = die->Tag(); 3231 switch (tag) 3232 { 3233 case DW_TAG_formal_parameter: 3234 { 3235 DWARFDebugInfoEntry::Attributes attributes; 3236 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); 3237 if (num_attributes > 0) 3238 { 3239 const char *name = NULL; 3240 Declaration decl; 3241 dw_offset_t param_type_die_offset = DW_INVALID_OFFSET; 3242 bool is_artificial = false; 3243 // one of None, Auto, Register, Extern, Static, PrivateExtern 3244 3245 clang::StorageClass storage = clang::SC_None; 3246 uint32_t i; 3247 for (i=0; i<num_attributes; ++i) 3248 { 3249 const dw_attr_t attr = attributes.AttributeAtIndex(i); 3250 DWARFFormValue form_value; 3251 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 3252 { 3253 switch (attr) 3254 { 3255 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 3256 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 3257 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 3258 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; 3259 case DW_AT_type: param_type_die_offset = form_value.Reference(dwarf_cu); break; 3260 case DW_AT_artificial: is_artificial = form_value.Unsigned() != 0; break; 3261 case DW_AT_location: 3262 // if (form_value.BlockData()) 3263 // { 3264 // const DataExtractor& debug_info_data = debug_info(); 3265 // uint32_t block_length = form_value.Unsigned(); 3266 // DataExtractor location(debug_info_data, form_value.BlockData() - debug_info_data.GetDataStart(), block_length); 3267 // } 3268 // else 3269 // { 3270 // } 3271 // break; 3272 case DW_AT_const_value: 3273 case DW_AT_default_value: 3274 case DW_AT_description: 3275 case DW_AT_endianity: 3276 case DW_AT_is_optional: 3277 case DW_AT_segment: 3278 case DW_AT_variable_parameter: 3279 default: 3280 case DW_AT_abstract_origin: 3281 case DW_AT_sibling: 3282 break; 3283 } 3284 } 3285 } 3286 3287 bool skip = false; 3288 if (skip_artificial) 3289 { 3290 if (is_artificial) 3291 { 3292 // In order to determine if a C++ member function is 3293 // "const" we have to look at the const-ness of "this"... 3294 // Ugly, but that 3295 if (arg_idx == 0) 3296 { 3297 if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind())) 3298 { 3299 // Often times compilers omit the "this" name for the 3300 // specification DIEs, so we can't rely upon the name 3301 // being in the formal parameter DIE... 3302 if (name == NULL || ::strcmp(name, "this")==0) 3303 { 3304 Type *this_type = ResolveTypeUID (param_type_die_offset); 3305 if (this_type) 3306 { 3307 uint32_t encoding_mask = this_type->GetEncodingMask(); 3308 if (encoding_mask & Type::eEncodingIsPointerUID) 3309 { 3310 is_static = false; 3311 3312 if (encoding_mask & (1u << Type::eEncodingIsConstUID)) 3313 type_quals |= clang::Qualifiers::Const; 3314 if (encoding_mask & (1u << Type::eEncodingIsVolatileUID)) 3315 type_quals |= clang::Qualifiers::Volatile; 3316 } 3317 } 3318 } 3319 } 3320 } 3321 skip = true; 3322 } 3323 else 3324 { 3325 3326 // HACK: Objective C formal parameters "self" and "_cmd" 3327 // are not marked as artificial in the DWARF... 3328 CompileUnit *curr_cu = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 3329 if (curr_cu && (curr_cu->GetLanguage() == eLanguageTypeObjC || curr_cu->GetLanguage() == eLanguageTypeObjC_plus_plus)) 3330 { 3331 if (name && name[0] && (strcmp (name, "self") == 0 || strcmp (name, "_cmd") == 0)) 3332 skip = true; 3333 } 3334 } 3335 } 3336 3337 if (!skip) 3338 { 3339 Type *type = ResolveTypeUID(param_type_die_offset); 3340 if (type) 3341 { 3342 function_param_types.push_back (type->GetClangForwardType()); 3343 3344 clang::ParmVarDecl *param_var_decl = GetClangASTContext().CreateParameterDeclaration (name, 3345 type->GetClangForwardType(), 3346 storage); 3347 assert(param_var_decl); 3348 function_param_decls.push_back(param_var_decl); 3349 } 3350 } 3351 } 3352 arg_idx++; 3353 } 3354 break; 3355 3356 default: 3357 break; 3358 } 3359 } 3360 return arg_idx; 3361 } 3362 3363 size_t 3364 SymbolFileDWARF::ParseChildEnumerators 3365 ( 3366 const SymbolContext& sc, 3367 clang_type_t enumerator_clang_type, 3368 uint32_t enumerator_byte_size, 3369 DWARFCompileUnit* dwarf_cu, 3370 const DWARFDebugInfoEntry *parent_die 3371 ) 3372 { 3373 if (parent_die == NULL) 3374 return 0; 3375 3376 size_t enumerators_added = 0; 3377 const DWARFDebugInfoEntry *die; 3378 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); 3379 3380 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 3381 { 3382 const dw_tag_t tag = die->Tag(); 3383 if (tag == DW_TAG_enumerator) 3384 { 3385 DWARFDebugInfoEntry::Attributes attributes; 3386 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); 3387 if (num_child_attributes > 0) 3388 { 3389 const char *name = NULL; 3390 bool got_value = false; 3391 int64_t enum_value = 0; 3392 Declaration decl; 3393 3394 uint32_t i; 3395 for (i=0; i<num_child_attributes; ++i) 3396 { 3397 const dw_attr_t attr = attributes.AttributeAtIndex(i); 3398 DWARFFormValue form_value; 3399 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 3400 { 3401 switch (attr) 3402 { 3403 case DW_AT_const_value: 3404 got_value = true; 3405 enum_value = form_value.Unsigned(); 3406 break; 3407 3408 case DW_AT_name: 3409 name = form_value.AsCString(&get_debug_str_data()); 3410 break; 3411 3412 case DW_AT_description: 3413 default: 3414 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 3415 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 3416 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 3417 case DW_AT_sibling: 3418 break; 3419 } 3420 } 3421 } 3422 3423 if (name && name[0] && got_value) 3424 { 3425 GetClangASTContext().AddEnumerationValueToEnumerationType (enumerator_clang_type, 3426 enumerator_clang_type, 3427 decl, 3428 name, 3429 enum_value, 3430 enumerator_byte_size * 8); 3431 ++enumerators_added; 3432 } 3433 } 3434 } 3435 } 3436 return enumerators_added; 3437 } 3438 3439 void 3440 SymbolFileDWARF::ParseChildArrayInfo 3441 ( 3442 const SymbolContext& sc, 3443 DWARFCompileUnit* dwarf_cu, 3444 const DWARFDebugInfoEntry *parent_die, 3445 int64_t& first_index, 3446 std::vector<uint64_t>& element_orders, 3447 uint32_t& byte_stride, 3448 uint32_t& bit_stride 3449 ) 3450 { 3451 if (parent_die == NULL) 3452 return; 3453 3454 const DWARFDebugInfoEntry *die; 3455 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); 3456 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 3457 { 3458 const dw_tag_t tag = die->Tag(); 3459 switch (tag) 3460 { 3461 case DW_TAG_enumerator: 3462 { 3463 DWARFDebugInfoEntry::Attributes attributes; 3464 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); 3465 if (num_child_attributes > 0) 3466 { 3467 const char *name = NULL; 3468 bool got_value = false; 3469 int64_t enum_value = 0; 3470 3471 uint32_t i; 3472 for (i=0; i<num_child_attributes; ++i) 3473 { 3474 const dw_attr_t attr = attributes.AttributeAtIndex(i); 3475 DWARFFormValue form_value; 3476 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 3477 { 3478 switch (attr) 3479 { 3480 case DW_AT_const_value: 3481 got_value = true; 3482 enum_value = form_value.Unsigned(); 3483 break; 3484 3485 case DW_AT_name: 3486 name = form_value.AsCString(&get_debug_str_data()); 3487 break; 3488 3489 case DW_AT_description: 3490 default: 3491 case DW_AT_decl_file: 3492 case DW_AT_decl_line: 3493 case DW_AT_decl_column: 3494 case DW_AT_sibling: 3495 break; 3496 } 3497 } 3498 } 3499 } 3500 } 3501 break; 3502 3503 case DW_TAG_subrange_type: 3504 { 3505 DWARFDebugInfoEntry::Attributes attributes; 3506 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); 3507 if (num_child_attributes > 0) 3508 { 3509 const char *name = NULL; 3510 bool got_value = false; 3511 uint64_t byte_size = 0; 3512 int64_t enum_value = 0; 3513 uint64_t num_elements = 0; 3514 uint64_t lower_bound = 0; 3515 uint64_t upper_bound = 0; 3516 uint32_t i; 3517 for (i=0; i<num_child_attributes; ++i) 3518 { 3519 const dw_attr_t attr = attributes.AttributeAtIndex(i); 3520 DWARFFormValue form_value; 3521 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 3522 { 3523 switch (attr) 3524 { 3525 case DW_AT_const_value: 3526 got_value = true; 3527 enum_value = form_value.Unsigned(); 3528 break; 3529 3530 case DW_AT_name: 3531 name = form_value.AsCString(&get_debug_str_data()); 3532 break; 3533 3534 case DW_AT_count: 3535 num_elements = form_value.Unsigned(); 3536 break; 3537 3538 case DW_AT_bit_stride: 3539 bit_stride = form_value.Unsigned(); 3540 break; 3541 3542 case DW_AT_byte_stride: 3543 byte_stride = form_value.Unsigned(); 3544 break; 3545 3546 case DW_AT_byte_size: 3547 byte_size = form_value.Unsigned(); 3548 break; 3549 3550 case DW_AT_lower_bound: 3551 lower_bound = form_value.Unsigned(); 3552 break; 3553 3554 case DW_AT_upper_bound: 3555 upper_bound = form_value.Unsigned(); 3556 break; 3557 3558 default: 3559 case DW_AT_abstract_origin: 3560 case DW_AT_accessibility: 3561 case DW_AT_allocated: 3562 case DW_AT_associated: 3563 case DW_AT_data_location: 3564 case DW_AT_declaration: 3565 case DW_AT_description: 3566 case DW_AT_sibling: 3567 case DW_AT_threads_scaled: 3568 case DW_AT_type: 3569 case DW_AT_visibility: 3570 break; 3571 } 3572 } 3573 } 3574 3575 if (upper_bound > lower_bound) 3576 num_elements = upper_bound - lower_bound + 1; 3577 3578 if (num_elements > 0) 3579 element_orders.push_back (num_elements); 3580 } 3581 } 3582 break; 3583 } 3584 } 3585 } 3586 3587 TypeSP 3588 SymbolFileDWARF::GetTypeForDIE (DWARFCompileUnit *curr_cu, const DWARFDebugInfoEntry* die) 3589 { 3590 TypeSP type_sp; 3591 if (die != NULL) 3592 { 3593 assert(curr_cu != NULL); 3594 Type *type_ptr = m_die_to_type.lookup (die); 3595 if (type_ptr == NULL) 3596 { 3597 CompileUnit* lldb_cu = GetCompUnitForDWARFCompUnit(curr_cu); 3598 assert (lldb_cu); 3599 SymbolContext sc(lldb_cu); 3600 type_sp = ParseType(sc, curr_cu, die, NULL); 3601 } 3602 else if (type_ptr != DIE_IS_BEING_PARSED) 3603 { 3604 // Grab the existing type from the master types lists 3605 type_sp = type_ptr; 3606 } 3607 3608 } 3609 return type_sp; 3610 } 3611 3612 clang::DeclContext * 3613 SymbolFileDWARF::GetClangDeclContextContainingDIEOffset (dw_offset_t die_offset) 3614 { 3615 if (die_offset != DW_INVALID_OFFSET) 3616 { 3617 DWARFCompileUnitSP cu_sp; 3618 const DWARFDebugInfoEntry* die = DebugInfo()->GetDIEPtr(die_offset, &cu_sp); 3619 return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL); 3620 } 3621 return NULL; 3622 } 3623 3624 clang::DeclContext * 3625 SymbolFileDWARF::GetClangDeclContextForDIEOffset (const SymbolContext &sc, dw_offset_t die_offset) 3626 { 3627 if (die_offset != DW_INVALID_OFFSET) 3628 { 3629 DWARFDebugInfo* debug_info = DebugInfo(); 3630 if (debug_info) 3631 { 3632 DWARFCompileUnitSP cu_sp; 3633 const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(die_offset, &cu_sp); 3634 if (die) 3635 return GetClangDeclContextForDIE (sc, cu_sp.get(), die); 3636 } 3637 } 3638 return NULL; 3639 } 3640 3641 clang::NamespaceDecl * 3642 SymbolFileDWARF::ResolveNamespaceDIE (DWARFCompileUnit *curr_cu, const DWARFDebugInfoEntry *die) 3643 { 3644 if (die && die->Tag() == DW_TAG_namespace) 3645 { 3646 // See if we already parsed this namespace DIE and associated it with a 3647 // uniqued namespace declaration 3648 clang::NamespaceDecl *namespace_decl = static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die]); 3649 if (namespace_decl) 3650 return namespace_decl; 3651 else 3652 { 3653 const char *namespace_name = die->GetAttributeValueAsString(this, curr_cu, DW_AT_name, NULL); 3654 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (curr_cu, die, NULL); 3655 namespace_decl = GetClangASTContext().GetUniqueNamespaceDeclaration (namespace_name, containing_decl_ctx); 3656 LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 3657 if (log) 3658 { 3659 if (namespace_name) 3660 { 3661 LogMessage (log.get(), 3662 "ASTContext => %p: 0x%8.8llx: DW_TAG_namespace with DW_AT_name(\"%s\") => clang::NamespaceDecl *%p (original = %p)", 3663 GetClangASTContext().getASTContext(), 3664 MakeUserID(die->GetOffset()), 3665 namespace_name, 3666 namespace_decl, 3667 namespace_decl->getOriginalNamespace()); 3668 } 3669 else 3670 { 3671 LogMessage (log.get(), 3672 "ASTContext => %p: 0x%8.8llx: DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p (original = %p)", 3673 GetClangASTContext().getASTContext(), 3674 MakeUserID(die->GetOffset()), 3675 namespace_decl, 3676 namespace_decl->getOriginalNamespace()); 3677 } 3678 } 3679 3680 if (namespace_decl) 3681 LinkDeclContextToDIE((clang::DeclContext*)namespace_decl, die); 3682 return namespace_decl; 3683 } 3684 } 3685 return NULL; 3686 } 3687 3688 clang::DeclContext * 3689 SymbolFileDWARF::GetClangDeclContextForDIE (const SymbolContext &sc, DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) 3690 { 3691 clang::DeclContext *clang_decl_ctx = GetCachedClangDeclContextForDIE (die); 3692 if (clang_decl_ctx) 3693 return clang_decl_ctx; 3694 // If this DIE has a specification, or an abstract origin, then trace to those. 3695 3696 dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET); 3697 if (die_offset != DW_INVALID_OFFSET) 3698 return GetClangDeclContextForDIEOffset (sc, die_offset); 3699 3700 die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET); 3701 if (die_offset != DW_INVALID_OFFSET) 3702 return GetClangDeclContextForDIEOffset (sc, die_offset); 3703 3704 LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 3705 if (log) 3706 LogMessage(log.get(), "SymbolFileDWARF::GetClangDeclContextForDIE (die = 0x%8.8x) %s '%s'", die->GetOffset(), DW_TAG_value_to_name(die->Tag()), die->GetName(this, cu)); 3707 // This is the DIE we want. Parse it, then query our map. 3708 bool assert_not_being_parsed = true; 3709 ResolveTypeUID (cu, die, assert_not_being_parsed); 3710 3711 clang_decl_ctx = GetCachedClangDeclContextForDIE (die); 3712 3713 return clang_decl_ctx; 3714 } 3715 3716 clang::DeclContext * 3717 SymbolFileDWARF::GetClangDeclContextContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die, const DWARFDebugInfoEntry **decl_ctx_die_copy) 3718 { 3719 if (m_clang_tu_decl == NULL) 3720 m_clang_tu_decl = GetClangASTContext().getASTContext()->getTranslationUnitDecl(); 3721 3722 const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die); 3723 3724 if (decl_ctx_die_copy) 3725 *decl_ctx_die_copy = decl_ctx_die; 3726 3727 if (decl_ctx_die) 3728 { 3729 3730 DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find (decl_ctx_die); 3731 if (pos != m_die_to_decl_ctx.end()) 3732 return pos->second; 3733 3734 switch (decl_ctx_die->Tag()) 3735 { 3736 case DW_TAG_compile_unit: 3737 return m_clang_tu_decl; 3738 3739 case DW_TAG_namespace: 3740 return ResolveNamespaceDIE (cu, decl_ctx_die); 3741 break; 3742 3743 case DW_TAG_structure_type: 3744 case DW_TAG_union_type: 3745 case DW_TAG_class_type: 3746 { 3747 Type* type = ResolveType (cu, decl_ctx_die); 3748 if (type) 3749 { 3750 clang::DeclContext *decl_ctx = ClangASTContext::GetDeclContextForType (type->GetClangForwardType ()); 3751 if (decl_ctx) 3752 { 3753 LinkDeclContextToDIE (decl_ctx, decl_ctx_die); 3754 if (decl_ctx) 3755 return decl_ctx; 3756 } 3757 } 3758 } 3759 break; 3760 3761 default: 3762 break; 3763 } 3764 } 3765 return m_clang_tu_decl; 3766 } 3767 3768 3769 const DWARFDebugInfoEntry * 3770 SymbolFileDWARF::GetDeclContextDIEContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) 3771 { 3772 if (cu && die) 3773 { 3774 const DWARFDebugInfoEntry * const decl_die = die; 3775 3776 while (die != NULL) 3777 { 3778 // If this is the original DIE that we are searching for a declaration 3779 // for, then don't look in the cache as we don't want our own decl 3780 // context to be our decl context... 3781 if (decl_die != die) 3782 { 3783 switch (die->Tag()) 3784 { 3785 case DW_TAG_compile_unit: 3786 case DW_TAG_namespace: 3787 case DW_TAG_structure_type: 3788 case DW_TAG_union_type: 3789 case DW_TAG_class_type: 3790 return die; 3791 3792 default: 3793 break; 3794 } 3795 } 3796 3797 dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET); 3798 if (die_offset != DW_INVALID_OFFSET) 3799 { 3800 DWARFCompileUnit *spec_cu = cu; 3801 const DWARFDebugInfoEntry *spec_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &spec_cu); 3802 const DWARFDebugInfoEntry *spec_die_decl_ctx_die = GetDeclContextDIEContainingDIE (spec_cu, spec_die); 3803 if (spec_die_decl_ctx_die) 3804 return spec_die_decl_ctx_die; 3805 } 3806 3807 die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET); 3808 if (die_offset != DW_INVALID_OFFSET) 3809 { 3810 DWARFCompileUnit *abs_cu = cu; 3811 const DWARFDebugInfoEntry *abs_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &abs_cu); 3812 const DWARFDebugInfoEntry *abs_die_decl_ctx_die = GetDeclContextDIEContainingDIE (abs_cu, abs_die); 3813 if (abs_die_decl_ctx_die) 3814 return abs_die_decl_ctx_die; 3815 } 3816 3817 die = die->GetParent(); 3818 } 3819 } 3820 return NULL; 3821 } 3822 3823 3824 Symbol * 3825 SymbolFileDWARF::GetObjCClassSymbol (const ConstString &objc_class_name) 3826 { 3827 Symbol *objc_class_symbol = NULL; 3828 if (m_obj_file) 3829 { 3830 Symtab *symtab = m_obj_file->GetSymtab(); 3831 if (symtab) 3832 { 3833 objc_class_symbol = symtab->FindFirstSymbolWithNameAndType (objc_class_name, 3834 eSymbolTypeObjCClass, 3835 Symtab::eDebugNo, 3836 Symtab::eVisibilityAny); 3837 } 3838 } 3839 return objc_class_symbol; 3840 } 3841 3842 3843 // This function can be used when a DIE is found that is a forward declaration 3844 // DIE and we want to try and find a type that has the complete definition. 3845 TypeSP 3846 SymbolFileDWARF::FindCompleteObjCDefinitionTypeForDIE (DWARFCompileUnit* cu, 3847 const DWARFDebugInfoEntry *die, 3848 const ConstString &type_name) 3849 { 3850 3851 TypeSP type_sp; 3852 3853 if (cu == NULL || die == NULL || !type_name || !GetObjCClassSymbol (type_name)) 3854 return type_sp; 3855 3856 DIEArray die_offsets; 3857 3858 if (m_using_apple_tables) 3859 { 3860 if (m_apple_types_ap.get()) 3861 { 3862 const char *name_cstr = type_name.GetCString(); 3863 m_apple_types_ap->FindCompleteObjCClassByName (name_cstr, die_offsets); 3864 } 3865 } 3866 else 3867 { 3868 if (!m_indexed) 3869 Index (); 3870 3871 m_type_index.Find (type_name, die_offsets); 3872 } 3873 3874 const size_t num_matches = die_offsets.size(); 3875 3876 const dw_tag_t die_tag = die->Tag(); 3877 3878 DWARFCompileUnit* type_cu = NULL; 3879 const DWARFDebugInfoEntry* type_die = NULL; 3880 if (num_matches) 3881 { 3882 DWARFDebugInfo* debug_info = DebugInfo(); 3883 for (size_t i=0; i<num_matches; ++i) 3884 { 3885 const dw_offset_t die_offset = die_offsets[i]; 3886 type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu); 3887 3888 if (type_die) 3889 { 3890 bool try_resolving_type = false; 3891 3892 // Don't try and resolve the DIE we are looking for with the DIE itself! 3893 if (type_die != die) 3894 { 3895 const dw_tag_t type_die_tag = type_die->Tag(); 3896 // Make sure the tags match 3897 if (type_die_tag == die_tag) 3898 { 3899 // The tags match, lets try resolving this type 3900 try_resolving_type = true; 3901 } 3902 else 3903 { 3904 // The tags don't match, but we need to watch our for a 3905 // forward declaration for a struct and ("struct foo") 3906 // ends up being a class ("class foo { ... };") or 3907 // vice versa. 3908 switch (type_die_tag) 3909 { 3910 case DW_TAG_class_type: 3911 // We had a "class foo", see if we ended up with a "struct foo { ... };" 3912 try_resolving_type = (die_tag == DW_TAG_structure_type); 3913 break; 3914 case DW_TAG_structure_type: 3915 // We had a "struct foo", see if we ended up with a "class foo { ... };" 3916 try_resolving_type = (die_tag == DW_TAG_class_type); 3917 break; 3918 default: 3919 // Tags don't match, don't event try to resolve 3920 // using this type whose name matches.... 3921 break; 3922 } 3923 } 3924 } 3925 3926 if (try_resolving_type) 3927 { 3928 try_resolving_type = type_die->GetAttributeValueAsUnsigned (this, type_cu, DW_AT_APPLE_objc_complete_type, 0); 3929 3930 if (try_resolving_type) 3931 { 3932 Type *resolved_type = ResolveType (type_cu, type_die, false); 3933 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) 3934 { 3935 DEBUG_PRINTF ("resolved 0x%8.8llx (cu 0x%8.8llx) from %s to 0x%8.8llx (cu 0x%8.8llx)\n", 3936 MakeUserID(die->GetOffset()), 3937 MakeUserID(curr_cu->GetOffset()), 3938 m_obj_file->GetFileSpec().GetFilename().AsCString(), 3939 MakeUserID(type_die->GetOffset()), 3940 MakeUserID(type_cu->GetOffset())); 3941 3942 m_die_to_type[die] = resolved_type; 3943 type_sp = resolved_type; 3944 break; 3945 } 3946 } 3947 } 3948 } 3949 else 3950 { 3951 if (m_using_apple_tables) 3952 { 3953 ReportError (".apple_types accelerator table had bad die 0x%8.8x for '%s'\n", 3954 die_offset, type_name.GetCString()); 3955 } 3956 } 3957 3958 } 3959 } 3960 return type_sp; 3961 } 3962 3963 3964 // This function can be used when a DIE is found that is a forward declaration 3965 // DIE and we want to try and find a type that has the complete definition. 3966 TypeSP 3967 SymbolFileDWARF::FindDefinitionTypeForDIE (DWARFCompileUnit* cu, 3968 const DWARFDebugInfoEntry *die, 3969 const ConstString &type_name) 3970 { 3971 TypeSP type_sp; 3972 3973 if (cu == NULL || die == NULL || !type_name) 3974 return type_sp; 3975 3976 DIEArray die_offsets; 3977 3978 if (m_using_apple_tables) 3979 { 3980 if (m_apple_types_ap.get()) 3981 { 3982 if (m_apple_types_ap->GetHeader().header_data.atoms.size() > 1) 3983 { 3984 std::string qualified_name; 3985 const char *qualified_cstr = die->GetQualifiedName(this, cu, qualified_name); 3986 DWARFMappedHash::DIEInfoArray hash_data_array; 3987 m_apple_types_ap->FindByName (qualified_cstr, hash_data_array); 3988 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); 3989 } 3990 else 3991 { 3992 m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets); 3993 } 3994 } 3995 } 3996 else 3997 { 3998 if (!m_indexed) 3999 Index (); 4000 4001 m_type_index.Find (type_name, die_offsets); 4002 } 4003 4004 const size_t num_matches = die_offsets.size(); 4005 4006 const dw_tag_t die_tag = die->Tag(); 4007 4008 DWARFCompileUnit* type_cu = NULL; 4009 const DWARFDebugInfoEntry* type_die = NULL; 4010 if (num_matches) 4011 { 4012 DWARFDebugInfo* debug_info = DebugInfo(); 4013 for (size_t i=0; i<num_matches; ++i) 4014 { 4015 const dw_offset_t die_offset = die_offsets[i]; 4016 type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu); 4017 4018 if (type_die) 4019 { 4020 bool try_resolving_type = false; 4021 4022 // Don't try and resolve the DIE we are looking for with the DIE itself! 4023 if (type_die != die) 4024 { 4025 const dw_tag_t type_die_tag = type_die->Tag(); 4026 // Make sure the tags match 4027 if (type_die_tag == die_tag) 4028 { 4029 // The tags match, lets try resolving this type 4030 try_resolving_type = true; 4031 } 4032 else 4033 { 4034 // The tags don't match, but we need to watch our for a 4035 // forward declaration for a struct and ("struct foo") 4036 // ends up being a class ("class foo { ... };") or 4037 // vice versa. 4038 switch (type_die_tag) 4039 { 4040 case DW_TAG_class_type: 4041 // We had a "class foo", see if we ended up with a "struct foo { ... };" 4042 try_resolving_type = (die_tag == DW_TAG_structure_type); 4043 break; 4044 case DW_TAG_structure_type: 4045 // We had a "struct foo", see if we ended up with a "class foo { ... };" 4046 try_resolving_type = (die_tag == DW_TAG_class_type); 4047 break; 4048 default: 4049 // Tags don't match, don't event try to resolve 4050 // using this type whose name matches.... 4051 break; 4052 } 4053 } 4054 } 4055 4056 if (try_resolving_type) 4057 { 4058 Type *resolved_type = ResolveType (type_cu, type_die, false); 4059 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) 4060 { 4061 DEBUG_PRINTF ("resolved 0x%8.8llx (cu 0x%8.8llx) from %s to 0x%8.8llx (cu 0x%8.8llx)\n", 4062 MakeUserID(die->GetOffset()), 4063 MakeUserID(curr_cu->GetOffset()), 4064 m_obj_file->GetFileSpec().GetFilename().AsCString(), 4065 MakeUserID(type_die->GetOffset()), 4066 MakeUserID(type_cu->GetOffset())); 4067 4068 m_die_to_type[die] = resolved_type; 4069 type_sp = resolved_type; 4070 break; 4071 } 4072 } 4073 } 4074 else 4075 { 4076 if (m_using_apple_tables) 4077 { 4078 ReportError (".apple_types accelerator table had bad die 0x%8.8x for '%s'\n", 4079 die_offset, type_name.GetCString()); 4080 } 4081 } 4082 4083 } 4084 } 4085 return type_sp; 4086 } 4087 4088 TypeSP 4089 SymbolFileDWARF::ParseType (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die, bool *type_is_new_ptr) 4090 { 4091 TypeSP type_sp; 4092 4093 if (type_is_new_ptr) 4094 *type_is_new_ptr = false; 4095 4096 AccessType accessibility = eAccessNone; 4097 if (die != NULL) 4098 { 4099 LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 4100 if (log) 4101 LogMessage (log.get(), "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s'", 4102 die->GetOffset(), 4103 DW_TAG_value_to_name(die->Tag()), 4104 die->GetName(this, dwarf_cu)); 4105 // 4106 // LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 4107 // if (log && dwarf_cu) 4108 // { 4109 // StreamString s; 4110 // die->DumpLocation (this, dwarf_cu, s); 4111 // LogMessage (log.get(), "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData()); 4112 // 4113 // } 4114 4115 Type *type_ptr = m_die_to_type.lookup (die); 4116 TypeList* type_list = GetTypeList(); 4117 if (type_ptr == NULL) 4118 { 4119 ClangASTContext &ast = GetClangASTContext(); 4120 if (type_is_new_ptr) 4121 *type_is_new_ptr = true; 4122 4123 const dw_tag_t tag = die->Tag(); 4124 4125 bool is_forward_declaration = false; 4126 DWARFDebugInfoEntry::Attributes attributes; 4127 const char *type_name_cstr = NULL; 4128 ConstString type_name_const_str; 4129 Type::ResolveState resolve_state = Type::eResolveStateUnresolved; 4130 size_t byte_size = 0; 4131 bool byte_size_valid = false; 4132 Declaration decl; 4133 4134 Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID; 4135 clang_type_t clang_type = NULL; 4136 4137 dw_attr_t attr; 4138 4139 switch (tag) 4140 { 4141 case DW_TAG_base_type: 4142 case DW_TAG_pointer_type: 4143 case DW_TAG_reference_type: 4144 case DW_TAG_typedef: 4145 case DW_TAG_const_type: 4146 case DW_TAG_restrict_type: 4147 case DW_TAG_volatile_type: 4148 case DW_TAG_unspecified_type: 4149 { 4150 // Set a bit that lets us know that we are currently parsing this 4151 m_die_to_type[die] = DIE_IS_BEING_PARSED; 4152 4153 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 4154 uint32_t encoding = 0; 4155 lldb::user_id_t encoding_uid = LLDB_INVALID_UID; 4156 4157 if (num_attributes > 0) 4158 { 4159 uint32_t i; 4160 for (i=0; i<num_attributes; ++i) 4161 { 4162 attr = attributes.AttributeAtIndex(i); 4163 DWARFFormValue form_value; 4164 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 4165 { 4166 switch (attr) 4167 { 4168 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 4169 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 4170 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 4171 case DW_AT_name: 4172 4173 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 4174 // Work around a bug in llvm-gcc where they give a name to a reference type which doesn't 4175 // include the "&"... 4176 if (tag == DW_TAG_reference_type) 4177 { 4178 if (strchr (type_name_cstr, '&') == NULL) 4179 type_name_cstr = NULL; 4180 } 4181 if (type_name_cstr) 4182 type_name_const_str.SetCString(type_name_cstr); 4183 break; 4184 case DW_AT_byte_size: byte_size = form_value.Unsigned(); byte_size_valid = true; break; 4185 case DW_AT_encoding: encoding = form_value.Unsigned(); break; 4186 case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break; 4187 default: 4188 case DW_AT_sibling: 4189 break; 4190 } 4191 } 4192 } 4193 } 4194 4195 DEBUG_PRINTF ("0x%8.8llx: %s (\"%s\") type => 0x%8.8x\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr, encoding_uid); 4196 4197 switch (tag) 4198 { 4199 default: 4200 break; 4201 4202 case DW_TAG_unspecified_type: 4203 if (strcmp(type_name_cstr, "nullptr_t") == 0) 4204 { 4205 resolve_state = Type::eResolveStateFull; 4206 clang_type = ast.getASTContext()->NullPtrTy.getAsOpaquePtr(); 4207 break; 4208 } 4209 // Fall through to base type below in case we can handle the type there... 4210 4211 case DW_TAG_base_type: 4212 resolve_state = Type::eResolveStateFull; 4213 clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr, 4214 encoding, 4215 byte_size * 8); 4216 break; 4217 4218 case DW_TAG_pointer_type: encoding_data_type = Type::eEncodingIsPointerUID; break; 4219 case DW_TAG_reference_type: encoding_data_type = Type::eEncodingIsLValueReferenceUID; break; 4220 case DW_TAG_typedef: encoding_data_type = Type::eEncodingIsTypedefUID; break; 4221 case DW_TAG_const_type: encoding_data_type = Type::eEncodingIsConstUID; break; 4222 case DW_TAG_restrict_type: encoding_data_type = Type::eEncodingIsRestrictUID; break; 4223 case DW_TAG_volatile_type: encoding_data_type = Type::eEncodingIsVolatileUID; break; 4224 } 4225 4226 if (type_name_cstr != NULL && sc.comp_unit != NULL && 4227 (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus)) 4228 { 4229 static ConstString g_objc_type_name_id("id"); 4230 static ConstString g_objc_type_name_Class("Class"); 4231 static ConstString g_objc_type_name_selector("SEL"); 4232 4233 if (type_name_const_str == g_objc_type_name_id) 4234 { 4235 clang_type = ast.GetBuiltInType_objc_id(); 4236 resolve_state = Type::eResolveStateFull; 4237 4238 } 4239 else if (type_name_const_str == g_objc_type_name_Class) 4240 { 4241 clang_type = ast.GetBuiltInType_objc_Class(); 4242 resolve_state = Type::eResolveStateFull; 4243 } 4244 else if (type_name_const_str == g_objc_type_name_selector) 4245 { 4246 clang_type = ast.GetBuiltInType_objc_selector(); 4247 resolve_state = Type::eResolveStateFull; 4248 } 4249 } 4250 4251 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 4252 this, 4253 type_name_const_str, 4254 byte_size, 4255 NULL, 4256 encoding_uid, 4257 encoding_data_type, 4258 &decl, 4259 clang_type, 4260 resolve_state)); 4261 4262 m_die_to_type[die] = type_sp.get(); 4263 4264 // Type* encoding_type = GetUniquedTypeForDIEOffset(encoding_uid, type_sp, NULL, 0, 0, false); 4265 // if (encoding_type != NULL) 4266 // { 4267 // if (encoding_type != DIE_IS_BEING_PARSED) 4268 // type_sp->SetEncodingType(encoding_type); 4269 // else 4270 // m_indirect_fixups.push_back(type_sp.get()); 4271 // } 4272 } 4273 break; 4274 4275 case DW_TAG_structure_type: 4276 case DW_TAG_union_type: 4277 case DW_TAG_class_type: 4278 { 4279 // Set a bit that lets us know that we are currently parsing this 4280 m_die_to_type[die] = DIE_IS_BEING_PARSED; 4281 4282 LanguageType class_language = eLanguageTypeUnknown; 4283 bool is_complete_objc_class = false; 4284 //bool struct_is_class = false; 4285 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 4286 if (num_attributes > 0) 4287 { 4288 uint32_t i; 4289 for (i=0; i<num_attributes; ++i) 4290 { 4291 attr = attributes.AttributeAtIndex(i); 4292 DWARFFormValue form_value; 4293 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 4294 { 4295 switch (attr) 4296 { 4297 case DW_AT_decl_file: 4298 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); 4299 break; 4300 4301 case DW_AT_decl_line: 4302 decl.SetLine(form_value.Unsigned()); 4303 break; 4304 4305 case DW_AT_decl_column: 4306 decl.SetColumn(form_value.Unsigned()); 4307 break; 4308 4309 case DW_AT_name: 4310 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 4311 type_name_const_str.SetCString(type_name_cstr); 4312 break; 4313 4314 case DW_AT_byte_size: 4315 byte_size = form_value.Unsigned(); 4316 byte_size_valid = true; 4317 break; 4318 4319 case DW_AT_accessibility: 4320 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); 4321 break; 4322 4323 case DW_AT_declaration: 4324 is_forward_declaration = form_value.Unsigned() != 0; 4325 break; 4326 4327 case DW_AT_APPLE_runtime_class: 4328 class_language = (LanguageType)form_value.Signed(); 4329 break; 4330 4331 case DW_AT_APPLE_objc_complete_type: 4332 is_complete_objc_class = form_value.Signed(); 4333 break; 4334 4335 case DW_AT_allocated: 4336 case DW_AT_associated: 4337 case DW_AT_data_location: 4338 case DW_AT_description: 4339 case DW_AT_start_scope: 4340 case DW_AT_visibility: 4341 default: 4342 case DW_AT_sibling: 4343 break; 4344 } 4345 } 4346 } 4347 } 4348 4349 UniqueDWARFASTType unique_ast_entry; 4350 if (decl.IsValid()) 4351 { 4352 if (GetUniqueDWARFASTTypeMap().Find (type_name_const_str, 4353 this, 4354 dwarf_cu, 4355 die, 4356 decl, 4357 byte_size_valid ? byte_size : -1, 4358 unique_ast_entry)) 4359 { 4360 // We have already parsed this type or from another 4361 // compile unit. GCC loves to use the "one definition 4362 // rule" which can result in multiple definitions 4363 // of the same class over and over in each compile 4364 // unit. 4365 type_sp = unique_ast_entry.m_type_sp; 4366 if (type_sp) 4367 { 4368 m_die_to_type[die] = type_sp.get(); 4369 return type_sp; 4370 } 4371 } 4372 } 4373 4374 DEBUG_PRINTF ("0x%8.8llx: %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 4375 4376 int tag_decl_kind = -1; 4377 AccessType default_accessibility = eAccessNone; 4378 if (tag == DW_TAG_structure_type) 4379 { 4380 tag_decl_kind = clang::TTK_Struct; 4381 default_accessibility = eAccessPublic; 4382 } 4383 else if (tag == DW_TAG_union_type) 4384 { 4385 tag_decl_kind = clang::TTK_Union; 4386 default_accessibility = eAccessPublic; 4387 } 4388 else if (tag == DW_TAG_class_type) 4389 { 4390 tag_decl_kind = clang::TTK_Class; 4391 default_accessibility = eAccessPrivate; 4392 } 4393 4394 if (byte_size_valid && byte_size == 0 && type_name_cstr && 4395 die->HasChildren() == false && 4396 sc.comp_unit->GetLanguage() == eLanguageTypeObjC) 4397 { 4398 // Work around an issue with clang at the moment where 4399 // forward declarations for objective C classes are emitted 4400 // as: 4401 // DW_TAG_structure_type [2] 4402 // DW_AT_name( "ForwardObjcClass" ) 4403 // DW_AT_byte_size( 0x00 ) 4404 // DW_AT_decl_file( "..." ) 4405 // DW_AT_decl_line( 1 ) 4406 // 4407 // Note that there is no DW_AT_declaration and there are 4408 // no children, and the byte size is zero. 4409 is_forward_declaration = true; 4410 } 4411 4412 if (class_language == eLanguageTypeObjC) 4413 { 4414 if (!is_complete_objc_class) 4415 { 4416 // We have a valid eSymbolTypeObjCClass class symbol whose 4417 // name matches the current objective C class that we 4418 // are trying to find and this DIE isn't the complete 4419 // definition (we checked is_complete_objc_class above and 4420 // know it is false), so the real definition is in here somewhere 4421 type_sp = FindCompleteObjCDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str); 4422 4423 if (!type_sp && m_debug_map_symfile) 4424 { 4425 // We weren't able to find a full declaration in 4426 // this DWARF, see if we have a declaration anywhere 4427 // else... 4428 type_sp = m_debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str); 4429 } 4430 4431 if (type_sp) 4432 { 4433 if (log) 4434 { 4435 LogMessage (log.get(), 4436 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an incomplete objc type, complete type is 0x%8.8llx", 4437 this, 4438 die->GetOffset(), 4439 DW_TAG_value_to_name(tag), 4440 type_name_cstr, 4441 type_sp->GetID()); 4442 } 4443 4444 // We found a real definition for this type elsewhere 4445 // so lets use it and cache the fact that we found 4446 // a complete type for this die 4447 m_die_to_type[die] = type_sp.get(); 4448 return type_sp; 4449 } 4450 } 4451 } 4452 4453 4454 if (is_forward_declaration) 4455 { 4456 // We have a forward declaration to a type and we need 4457 // to try and find a full declaration. We look in the 4458 // current type index just in case we have a forward 4459 // declaration followed by an actual declarations in the 4460 // DWARF. If this fails, we need to look elsewhere... 4461 if (log) 4462 { 4463 LogMessage (log.get(), 4464 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, trying to find complete type", 4465 this, 4466 die->GetOffset(), 4467 DW_TAG_value_to_name(tag), 4468 type_name_cstr); 4469 } 4470 4471 type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str); 4472 4473 if (!type_sp && m_debug_map_symfile) 4474 { 4475 // We weren't able to find a full declaration in 4476 // this DWARF, see if we have a declaration anywhere 4477 // else... 4478 type_sp = m_debug_map_symfile->FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str); 4479 } 4480 4481 if (type_sp) 4482 { 4483 if (log) 4484 { 4485 LogMessage (log.get(), 4486 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, complete type is 0x%8.8llx", 4487 this, 4488 die->GetOffset(), 4489 DW_TAG_value_to_name(tag), 4490 type_name_cstr, 4491 type_sp->GetID()); 4492 } 4493 4494 // We found a real definition for this type elsewhere 4495 // so lets use it and cache the fact that we found 4496 // a complete type for this die 4497 m_die_to_type[die] = type_sp.get(); 4498 return type_sp; 4499 } 4500 } 4501 assert (tag_decl_kind != -1); 4502 bool clang_type_was_created = false; 4503 clang_type = m_forward_decl_die_to_clang_type.lookup (die); 4504 if (clang_type == NULL) 4505 { 4506 clang::DeclContext *decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, NULL); 4507 if (accessibility == eAccessNone && decl_ctx) 4508 { 4509 // Check the decl context that contains this class/struct/union. 4510 // If it is a class we must give it an accessability. 4511 const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind(); 4512 if (DeclKindIsCXXClass (containing_decl_kind)) 4513 accessibility = default_accessibility; 4514 } 4515 4516 if (type_name_cstr && strchr (type_name_cstr, '<')) 4517 { 4518 ClangASTContext::TemplateParameterInfos template_param_infos; 4519 if (ParseTemplateParameterInfos (dwarf_cu, die, template_param_infos)) 4520 { 4521 clang::ClassTemplateDecl *class_template_decl = ParseClassTemplateDecl (decl_ctx, 4522 accessibility, 4523 type_name_cstr, 4524 tag_decl_kind, 4525 template_param_infos); 4526 4527 clang::ClassTemplateSpecializationDecl *class_specialization_decl = ast.CreateClassTemplateSpecializationDecl (decl_ctx, 4528 class_template_decl, 4529 tag_decl_kind, 4530 template_param_infos); 4531 clang_type = ast.CreateClassTemplateSpecializationType (class_specialization_decl); 4532 clang_type_was_created = true; 4533 } 4534 } 4535 4536 if (!clang_type_was_created) 4537 { 4538 clang_type_was_created = true; 4539 clang_type = ast.CreateRecordType (decl_ctx, 4540 accessibility, 4541 type_name_cstr, 4542 tag_decl_kind, 4543 class_language); 4544 } 4545 } 4546 4547 // Store a forward declaration to this class type in case any 4548 // parameters in any class methods need it for the clang 4549 // types for function prototypes. 4550 LinkDeclContextToDIE(ClangASTContext::GetDeclContextForType(clang_type), die); 4551 type_sp.reset (new Type (MakeUserID(die->GetOffset()), 4552 this, 4553 type_name_const_str, 4554 byte_size, 4555 NULL, 4556 LLDB_INVALID_UID, 4557 Type::eEncodingIsUID, 4558 &decl, 4559 clang_type, 4560 Type::eResolveStateForward)); 4561 4562 4563 // Add our type to the unique type map so we don't 4564 // end up creating many copies of the same type over 4565 // and over in the ASTContext for our module 4566 unique_ast_entry.m_type_sp = type_sp; 4567 unique_ast_entry.m_symfile = this; 4568 unique_ast_entry.m_cu = dwarf_cu; 4569 unique_ast_entry.m_die = die; 4570 unique_ast_entry.m_declaration = decl; 4571 GetUniqueDWARFASTTypeMap().Insert (type_name_const_str, 4572 unique_ast_entry); 4573 4574 if (!is_forward_declaration) 4575 { 4576 if (die->HasChildren() == false) 4577 { 4578 // No children for this struct/union/class, lets finish it 4579 ast.StartTagDeclarationDefinition (clang_type); 4580 ast.CompleteTagDeclarationDefinition (clang_type); 4581 } 4582 else if (clang_type_was_created) 4583 { 4584 // Leave this as a forward declaration until we need 4585 // to know the details of the type. lldb_private::Type 4586 // will automatically call the SymbolFile virtual function 4587 // "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition(Type *)" 4588 // When the definition needs to be defined. 4589 m_forward_decl_die_to_clang_type[die] = clang_type; 4590 m_forward_decl_clang_type_to_die[ClangASTType::RemoveFastQualifiers (clang_type)] = die; 4591 ClangASTContext::SetHasExternalStorage (clang_type, true); 4592 } 4593 } 4594 4595 } 4596 break; 4597 4598 case DW_TAG_enumeration_type: 4599 { 4600 // Set a bit that lets us know that we are currently parsing this 4601 m_die_to_type[die] = DIE_IS_BEING_PARSED; 4602 4603 lldb::user_id_t encoding_uid = DW_INVALID_OFFSET; 4604 4605 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 4606 if (num_attributes > 0) 4607 { 4608 uint32_t i; 4609 4610 for (i=0; i<num_attributes; ++i) 4611 { 4612 attr = attributes.AttributeAtIndex(i); 4613 DWARFFormValue form_value; 4614 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 4615 { 4616 switch (attr) 4617 { 4618 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 4619 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 4620 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 4621 case DW_AT_name: 4622 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 4623 type_name_const_str.SetCString(type_name_cstr); 4624 break; 4625 case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break; 4626 case DW_AT_byte_size: byte_size = form_value.Unsigned(); byte_size_valid = true; break; 4627 case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 4628 case DW_AT_declaration: is_forward_declaration = form_value.Unsigned() != 0; break; 4629 case DW_AT_allocated: 4630 case DW_AT_associated: 4631 case DW_AT_bit_stride: 4632 case DW_AT_byte_stride: 4633 case DW_AT_data_location: 4634 case DW_AT_description: 4635 case DW_AT_start_scope: 4636 case DW_AT_visibility: 4637 case DW_AT_specification: 4638 case DW_AT_abstract_origin: 4639 case DW_AT_sibling: 4640 break; 4641 } 4642 } 4643 } 4644 4645 DEBUG_PRINTF ("0x%8.8llx: %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 4646 4647 clang_type_t enumerator_clang_type = NULL; 4648 clang_type = m_forward_decl_die_to_clang_type.lookup (die); 4649 if (clang_type == NULL) 4650 { 4651 enumerator_clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (NULL, 4652 DW_ATE_signed, 4653 byte_size * 8); 4654 clang_type = ast.CreateEnumerationType (type_name_cstr, 4655 GetClangDeclContextContainingDIE (dwarf_cu, die, NULL), 4656 decl, 4657 enumerator_clang_type); 4658 } 4659 else 4660 { 4661 enumerator_clang_type = ClangASTContext::GetEnumerationIntegerType (clang_type); 4662 assert (enumerator_clang_type != NULL); 4663 } 4664 4665 LinkDeclContextToDIE(ClangASTContext::GetDeclContextForType(clang_type), die); 4666 4667 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 4668 this, 4669 type_name_const_str, 4670 byte_size, 4671 NULL, 4672 encoding_uid, 4673 Type::eEncodingIsUID, 4674 &decl, 4675 clang_type, 4676 Type::eResolveStateForward)); 4677 4678 ast.StartTagDeclarationDefinition (clang_type); 4679 if (die->HasChildren()) 4680 { 4681 SymbolContext cu_sc(GetCompUnitForDWARFCompUnit(dwarf_cu)); 4682 ParseChildEnumerators(cu_sc, clang_type, type_sp->GetByteSize(), dwarf_cu, die); 4683 } 4684 ast.CompleteTagDeclarationDefinition (clang_type); 4685 } 4686 } 4687 break; 4688 4689 case DW_TAG_inlined_subroutine: 4690 case DW_TAG_subprogram: 4691 case DW_TAG_subroutine_type: 4692 { 4693 // Set a bit that lets us know that we are currently parsing this 4694 m_die_to_type[die] = DIE_IS_BEING_PARSED; 4695 4696 const char *mangled = NULL; 4697 dw_offset_t type_die_offset = DW_INVALID_OFFSET; 4698 bool is_variadic = false; 4699 bool is_inline = false; 4700 bool is_static = false; 4701 bool is_virtual = false; 4702 bool is_explicit = false; 4703 bool is_artificial = false; 4704 dw_offset_t specification_die_offset = DW_INVALID_OFFSET; 4705 dw_offset_t abstract_origin_die_offset = DW_INVALID_OFFSET; 4706 4707 unsigned type_quals = 0; 4708 clang::StorageClass storage = clang::SC_None;//, Extern, Static, PrivateExtern 4709 4710 4711 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 4712 if (num_attributes > 0) 4713 { 4714 uint32_t i; 4715 for (i=0; i<num_attributes; ++i) 4716 { 4717 attr = attributes.AttributeAtIndex(i); 4718 DWARFFormValue form_value; 4719 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 4720 { 4721 switch (attr) 4722 { 4723 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 4724 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 4725 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 4726 case DW_AT_name: 4727 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 4728 type_name_const_str.SetCString(type_name_cstr); 4729 break; 4730 4731 case DW_AT_MIPS_linkage_name: mangled = form_value.AsCString(&get_debug_str_data()); break; 4732 case DW_AT_type: type_die_offset = form_value.Reference(dwarf_cu); break; 4733 case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 4734 case DW_AT_declaration: is_forward_declaration = form_value.Unsigned() != 0; break; 4735 case DW_AT_inline: is_inline = form_value.Unsigned() != 0; break; 4736 case DW_AT_virtuality: is_virtual = form_value.Unsigned() != 0; break; 4737 case DW_AT_explicit: is_explicit = form_value.Unsigned() != 0; break; 4738 case DW_AT_artificial: is_artificial = form_value.Unsigned() != 0; break; 4739 4740 4741 case DW_AT_external: 4742 if (form_value.Unsigned()) 4743 { 4744 if (storage == clang::SC_None) 4745 storage = clang::SC_Extern; 4746 else 4747 storage = clang::SC_PrivateExtern; 4748 } 4749 break; 4750 4751 case DW_AT_specification: 4752 specification_die_offset = form_value.Reference(dwarf_cu); 4753 break; 4754 4755 case DW_AT_abstract_origin: 4756 abstract_origin_die_offset = form_value.Reference(dwarf_cu); 4757 break; 4758 4759 case DW_AT_allocated: 4760 case DW_AT_associated: 4761 case DW_AT_address_class: 4762 case DW_AT_calling_convention: 4763 case DW_AT_data_location: 4764 case DW_AT_elemental: 4765 case DW_AT_entry_pc: 4766 case DW_AT_frame_base: 4767 case DW_AT_high_pc: 4768 case DW_AT_low_pc: 4769 case DW_AT_object_pointer: 4770 case DW_AT_prototyped: 4771 case DW_AT_pure: 4772 case DW_AT_ranges: 4773 case DW_AT_recursive: 4774 case DW_AT_return_addr: 4775 case DW_AT_segment: 4776 case DW_AT_start_scope: 4777 case DW_AT_static_link: 4778 case DW_AT_trampoline: 4779 case DW_AT_visibility: 4780 case DW_AT_vtable_elem_location: 4781 case DW_AT_description: 4782 case DW_AT_sibling: 4783 break; 4784 } 4785 } 4786 } 4787 } 4788 4789 DEBUG_PRINTF ("0x%8.8llx: %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 4790 4791 clang_type_t return_clang_type = NULL; 4792 Type *func_type = NULL; 4793 4794 if (type_die_offset != DW_INVALID_OFFSET) 4795 func_type = ResolveTypeUID(type_die_offset); 4796 4797 if (func_type) 4798 return_clang_type = func_type->GetClangForwardType(); 4799 else 4800 return_clang_type = ast.GetBuiltInType_void(); 4801 4802 4803 std::vector<clang_type_t> function_param_types; 4804 std::vector<clang::ParmVarDecl*> function_param_decls; 4805 4806 // Parse the function children for the parameters 4807 4808 const DWARFDebugInfoEntry *decl_ctx_die = NULL; 4809 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die); 4810 const clang::Decl::Kind containing_decl_kind = containing_decl_ctx->getDeclKind(); 4811 4812 const bool is_cxx_method = DeclKindIsCXXClass (containing_decl_kind); 4813 // Start off static. This will be set to false in ParseChildParameters(...) 4814 // if we find a "this" paramters as the first parameter 4815 if (is_cxx_method) 4816 is_static = true; 4817 4818 if (die->HasChildren()) 4819 { 4820 bool skip_artificial = true; 4821 ParseChildParameters (sc, 4822 containing_decl_ctx, 4823 type_sp, 4824 dwarf_cu, 4825 die, 4826 skip_artificial, 4827 is_static, 4828 type_list, 4829 function_param_types, 4830 function_param_decls, 4831 type_quals); 4832 } 4833 4834 // clang_type will get the function prototype clang type after this call 4835 clang_type = ast.CreateFunctionType (return_clang_type, 4836 &function_param_types[0], 4837 function_param_types.size(), 4838 is_variadic, 4839 type_quals); 4840 4841 if (type_name_cstr) 4842 { 4843 bool type_handled = false; 4844 if (tag == DW_TAG_subprogram) 4845 { 4846 if (ObjCLanguageRuntime::IsPossibleObjCMethodName (type_name_cstr)) 4847 { 4848 // We need to find the DW_TAG_class_type or 4849 // DW_TAG_struct_type by name so we can add this 4850 // as a member function of the class. 4851 const char *class_name_start = type_name_cstr + 2; 4852 const char *class_name_end = ::strchr (class_name_start, ' '); 4853 SymbolContext empty_sc; 4854 clang_type_t class_opaque_type = NULL; 4855 if (class_name_start < class_name_end) 4856 { 4857 ConstString class_name (class_name_start, class_name_end - class_name_start); 4858 TypeList types; 4859 const uint32_t match_count = FindTypes (empty_sc, class_name, NULL, true, UINT32_MAX, types); 4860 if (match_count > 0) 4861 { 4862 for (uint32_t i=0; i<match_count; ++i) 4863 { 4864 Type *type = types.GetTypeAtIndex (i).get(); 4865 clang_type_t type_clang_forward_type = type->GetClangForwardType(); 4866 if (ClangASTContext::IsObjCClassType (type_clang_forward_type)) 4867 { 4868 class_opaque_type = type_clang_forward_type; 4869 break; 4870 } 4871 } 4872 } 4873 } 4874 4875 if (class_opaque_type) 4876 { 4877 // If accessibility isn't set to anything valid, assume public for 4878 // now... 4879 if (accessibility == eAccessNone) 4880 accessibility = eAccessPublic; 4881 4882 clang::ObjCMethodDecl *objc_method_decl; 4883 objc_method_decl = ast.AddMethodToObjCObjectType (class_opaque_type, 4884 type_name_cstr, 4885 clang_type, 4886 accessibility); 4887 LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(objc_method_decl), die); 4888 type_handled = objc_method_decl != NULL; 4889 } 4890 } 4891 else if (is_cxx_method) 4892 { 4893 // Look at the parent of this DIE and see if is is 4894 // a class or struct and see if this is actually a 4895 // C++ method 4896 Type *class_type = ResolveType (dwarf_cu, decl_ctx_die); 4897 if (class_type) 4898 { 4899 if (specification_die_offset != DW_INVALID_OFFSET) 4900 { 4901 // We have a specification which we are going to base our function 4902 // prototype off of, so we need this type to be completed so that the 4903 // m_die_to_decl_ctx for the method in the specification has a valid 4904 // clang decl context. 4905 class_type->GetClangForwardType(); 4906 // If we have a specification, then the function type should have been 4907 // made with the specification and not with this die. 4908 DWARFCompileUnitSP spec_cu_sp; 4909 const DWARFDebugInfoEntry* spec_die = DebugInfo()->GetDIEPtr(specification_die_offset, &spec_cu_sp); 4910 clang::DeclContext *spec_clang_decl_ctx = GetCachedClangDeclContextForDIE (spec_die); 4911 if (spec_clang_decl_ctx) 4912 { 4913 LinkDeclContextToDIE(spec_clang_decl_ctx, die); 4914 } 4915 else 4916 { 4917 ReportWarning ("0x%8.8llx: DW_AT_specification(0x%8.8x) has no decl\n", 4918 MakeUserID(die->GetOffset()), 4919 specification_die_offset); 4920 } 4921 type_handled = true; 4922 } 4923 else if (abstract_origin_die_offset != DW_INVALID_OFFSET) 4924 { 4925 // We have a specification which we are going to base our function 4926 // prototype off of, so we need this type to be completed so that the 4927 // m_die_to_decl_ctx for the method in the abstract origin has a valid 4928 // clang decl context. 4929 class_type->GetClangForwardType(); 4930 4931 DWARFCompileUnitSP abs_cu_sp; 4932 const DWARFDebugInfoEntry* abs_die = DebugInfo()->GetDIEPtr(abstract_origin_die_offset, &abs_cu_sp); 4933 clang::DeclContext *abs_clang_decl_ctx = GetCachedClangDeclContextForDIE (abs_die); 4934 if (abs_clang_decl_ctx) 4935 { 4936 LinkDeclContextToDIE (abs_clang_decl_ctx, die); 4937 } 4938 else 4939 { 4940 ReportWarning ("0x%8.8llx: DW_AT_abstract_origin(0x%8.8x) has no decl\n", 4941 MakeUserID(die->GetOffset()), 4942 abstract_origin_die_offset); 4943 } 4944 type_handled = true; 4945 } 4946 else 4947 { 4948 clang_type_t class_opaque_type = class_type->GetClangForwardType(); 4949 if (ClangASTContext::IsCXXClassType (class_opaque_type)) 4950 { 4951 if (ClangASTContext::IsBeingDefined (class_opaque_type)) 4952 { 4953 // Neither GCC 4.2 nor clang++ currently set a valid accessibility 4954 // in the DWARF for C++ methods... Default to public for now... 4955 if (accessibility == eAccessNone) 4956 accessibility = eAccessPublic; 4957 4958 if (!is_static && !die->HasChildren()) 4959 { 4960 // We have a C++ member function with no children (this pointer!) 4961 // and clang will get mad if we try and make a function that isn't 4962 // well formed in the DWARF, so we will just skip it... 4963 type_handled = true; 4964 } 4965 else 4966 { 4967 clang::CXXMethodDecl *cxx_method_decl; 4968 // REMOVE THE CRASH DESCRIPTION BELOW 4969 Host::SetCrashDescriptionWithFormat ("SymbolFileDWARF::ParseType() is adding a method %s to class %s in DIE 0x%8.8llx from %s/%s", 4970 type_name_cstr, 4971 class_type->GetName().GetCString(), 4972 MakeUserID(die->GetOffset()), 4973 m_obj_file->GetFileSpec().GetDirectory().GetCString(), 4974 m_obj_file->GetFileSpec().GetFilename().GetCString()); 4975 4976 const bool is_attr_used = false; 4977 4978 cxx_method_decl = ast.AddMethodToCXXRecordType (class_opaque_type, 4979 type_name_cstr, 4980 clang_type, 4981 accessibility, 4982 is_virtual, 4983 is_static, 4984 is_inline, 4985 is_explicit, 4986 is_attr_used, 4987 is_artificial); 4988 LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(cxx_method_decl), die); 4989 4990 Host::SetCrashDescription (NULL); 4991 4992 type_handled = cxx_method_decl != NULL; 4993 } 4994 } 4995 else 4996 { 4997 // We were asked to parse the type for a method in a class, yet the 4998 // class hasn't been asked to complete itself through the 4999 // clang::ExternalASTSource protocol, so we need to just have the 5000 // class complete itself and do things the right way, then our 5001 // DIE should then have an entry in the m_die_to_type map. First 5002 // we need to modify the m_die_to_type so it doesn't think we are 5003 // trying to parse this DIE anymore... 5004 m_die_to_type[die] = NULL; 5005 5006 // Now we get the full type to force our class type to complete itself 5007 // using the clang::ExternalASTSource protocol which will parse all 5008 // base classes and all methods (including the method for this DIE). 5009 class_type->GetClangFullType(); 5010 5011 // The type for this DIE should have been filled in the function call above 5012 type_ptr = m_die_to_type[die]; 5013 if (type_ptr) 5014 { 5015 type_sp = type_ptr; 5016 break; 5017 } 5018 } 5019 } 5020 } 5021 } 5022 } 5023 } 5024 5025 if (!type_handled) 5026 { 5027 // We just have a function that isn't part of a class 5028 clang::FunctionDecl *function_decl = ast.CreateFunctionDeclaration (containing_decl_ctx, 5029 type_name_cstr, 5030 clang_type, 5031 storage, 5032 is_inline); 5033 5034 // Add the decl to our DIE to decl context map 5035 assert (function_decl); 5036 LinkDeclContextToDIE(function_decl, die); 5037 if (!function_param_decls.empty()) 5038 ast.SetFunctionParameters (function_decl, 5039 &function_param_decls.front(), 5040 function_param_decls.size()); 5041 } 5042 } 5043 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 5044 this, 5045 type_name_const_str, 5046 0, 5047 NULL, 5048 LLDB_INVALID_UID, 5049 Type::eEncodingIsUID, 5050 &decl, 5051 clang_type, 5052 Type::eResolveStateFull)); 5053 assert(type_sp.get()); 5054 } 5055 break; 5056 5057 case DW_TAG_array_type: 5058 { 5059 // Set a bit that lets us know that we are currently parsing this 5060 m_die_to_type[die] = DIE_IS_BEING_PARSED; 5061 5062 lldb::user_id_t type_die_offset = DW_INVALID_OFFSET; 5063 int64_t first_index = 0; 5064 uint32_t byte_stride = 0; 5065 uint32_t bit_stride = 0; 5066 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 5067 5068 if (num_attributes > 0) 5069 { 5070 uint32_t i; 5071 for (i=0; i<num_attributes; ++i) 5072 { 5073 attr = attributes.AttributeAtIndex(i); 5074 DWARFFormValue form_value; 5075 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 5076 { 5077 switch (attr) 5078 { 5079 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 5080 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 5081 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 5082 case DW_AT_name: 5083 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 5084 type_name_const_str.SetCString(type_name_cstr); 5085 break; 5086 5087 case DW_AT_type: type_die_offset = form_value.Reference(dwarf_cu); break; 5088 case DW_AT_byte_size: byte_size = form_value.Unsigned(); byte_size_valid = true; break; 5089 case DW_AT_byte_stride: byte_stride = form_value.Unsigned(); break; 5090 case DW_AT_bit_stride: bit_stride = form_value.Unsigned(); break; 5091 case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 5092 case DW_AT_declaration: is_forward_declaration = form_value.Unsigned() != 0; break; 5093 case DW_AT_allocated: 5094 case DW_AT_associated: 5095 case DW_AT_data_location: 5096 case DW_AT_description: 5097 case DW_AT_ordering: 5098 case DW_AT_start_scope: 5099 case DW_AT_visibility: 5100 case DW_AT_specification: 5101 case DW_AT_abstract_origin: 5102 case DW_AT_sibling: 5103 break; 5104 } 5105 } 5106 } 5107 5108 DEBUG_PRINTF ("0x%8.8llx: %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 5109 5110 Type *element_type = ResolveTypeUID(type_die_offset); 5111 5112 if (element_type) 5113 { 5114 std::vector<uint64_t> element_orders; 5115 ParseChildArrayInfo(sc, dwarf_cu, die, first_index, element_orders, byte_stride, bit_stride); 5116 // We have an array that claims to have no members, lets give it at least one member... 5117 if (element_orders.empty()) 5118 element_orders.push_back (1); 5119 if (byte_stride == 0 && bit_stride == 0) 5120 byte_stride = element_type->GetByteSize(); 5121 clang_type_t array_element_type = element_type->GetClangForwardType(); 5122 uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride; 5123 uint64_t num_elements = 0; 5124 std::vector<uint64_t>::const_reverse_iterator pos; 5125 std::vector<uint64_t>::const_reverse_iterator end = element_orders.rend(); 5126 for (pos = element_orders.rbegin(); pos != end; ++pos) 5127 { 5128 num_elements = *pos; 5129 clang_type = ast.CreateArrayType (array_element_type, 5130 num_elements, 5131 num_elements * array_element_bit_stride); 5132 array_element_type = clang_type; 5133 array_element_bit_stride = array_element_bit_stride * num_elements; 5134 } 5135 ConstString empty_name; 5136 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 5137 this, 5138 empty_name, 5139 array_element_bit_stride / 8, 5140 NULL, 5141 type_die_offset, 5142 Type::eEncodingIsUID, 5143 &decl, 5144 clang_type, 5145 Type::eResolveStateFull)); 5146 type_sp->SetEncodingType (element_type); 5147 } 5148 } 5149 } 5150 break; 5151 5152 case DW_TAG_ptr_to_member_type: 5153 { 5154 dw_offset_t type_die_offset = DW_INVALID_OFFSET; 5155 dw_offset_t containing_type_die_offset = DW_INVALID_OFFSET; 5156 5157 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 5158 5159 if (num_attributes > 0) { 5160 uint32_t i; 5161 for (i=0; i<num_attributes; ++i) 5162 { 5163 attr = attributes.AttributeAtIndex(i); 5164 DWARFFormValue form_value; 5165 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 5166 { 5167 switch (attr) 5168 { 5169 case DW_AT_type: 5170 type_die_offset = form_value.Reference(dwarf_cu); break; 5171 case DW_AT_containing_type: 5172 containing_type_die_offset = form_value.Reference(dwarf_cu); break; 5173 } 5174 } 5175 } 5176 5177 Type *pointee_type = ResolveTypeUID(type_die_offset); 5178 Type *class_type = ResolveTypeUID(containing_type_die_offset); 5179 5180 clang_type_t pointee_clang_type = pointee_type->GetClangForwardType(); 5181 clang_type_t class_clang_type = class_type->GetClangLayoutType(); 5182 5183 clang_type = ast.CreateMemberPointerType(pointee_clang_type, 5184 class_clang_type); 5185 5186 byte_size = ClangASTType::GetClangTypeBitWidth (ast.getASTContext(), 5187 clang_type) / 8; 5188 5189 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 5190 this, 5191 type_name_const_str, 5192 byte_size, 5193 NULL, 5194 LLDB_INVALID_UID, 5195 Type::eEncodingIsUID, 5196 NULL, 5197 clang_type, 5198 Type::eResolveStateForward)); 5199 } 5200 5201 break; 5202 } 5203 default: 5204 assert(false && "Unhandled type tag!"); 5205 break; 5206 } 5207 5208 if (type_sp.get()) 5209 { 5210 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die); 5211 dw_tag_t sc_parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; 5212 5213 SymbolContextScope * symbol_context_scope = NULL; 5214 if (sc_parent_tag == DW_TAG_compile_unit) 5215 { 5216 symbol_context_scope = sc.comp_unit; 5217 } 5218 else if (sc.function != NULL) 5219 { 5220 symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); 5221 if (symbol_context_scope == NULL) 5222 symbol_context_scope = sc.function; 5223 } 5224 5225 if (symbol_context_scope != NULL) 5226 { 5227 type_sp->SetSymbolContextScope(symbol_context_scope); 5228 } 5229 5230 // We are ready to put this type into the uniqued list up at the module level 5231 type_list->Insert (type_sp); 5232 5233 m_die_to_type[die] = type_sp.get(); 5234 } 5235 } 5236 else if (type_ptr != DIE_IS_BEING_PARSED) 5237 { 5238 type_sp = type_ptr; 5239 } 5240 } 5241 return type_sp; 5242 } 5243 5244 size_t 5245 SymbolFileDWARF::ParseTypes 5246 ( 5247 const SymbolContext& sc, 5248 DWARFCompileUnit* dwarf_cu, 5249 const DWARFDebugInfoEntry *die, 5250 bool parse_siblings, 5251 bool parse_children 5252 ) 5253 { 5254 size_t types_added = 0; 5255 while (die != NULL) 5256 { 5257 bool type_is_new = false; 5258 if (ParseType(sc, dwarf_cu, die, &type_is_new).get()) 5259 { 5260 if (type_is_new) 5261 ++types_added; 5262 } 5263 5264 if (parse_children && die->HasChildren()) 5265 { 5266 if (die->Tag() == DW_TAG_subprogram) 5267 { 5268 SymbolContext child_sc(sc); 5269 child_sc.function = sc.comp_unit->FindFunctionByUID(MakeUserID(die->GetOffset())).get(); 5270 types_added += ParseTypes(child_sc, dwarf_cu, die->GetFirstChild(), true, true); 5271 } 5272 else 5273 types_added += ParseTypes(sc, dwarf_cu, die->GetFirstChild(), true, true); 5274 } 5275 5276 if (parse_siblings) 5277 die = die->GetSibling(); 5278 else 5279 die = NULL; 5280 } 5281 return types_added; 5282 } 5283 5284 5285 size_t 5286 SymbolFileDWARF::ParseFunctionBlocks (const SymbolContext &sc) 5287 { 5288 assert(sc.comp_unit && sc.function); 5289 size_t functions_added = 0; 5290 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID()); 5291 if (dwarf_cu) 5292 { 5293 dw_offset_t function_die_offset = sc.function->GetID(); 5294 const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(function_die_offset); 5295 if (function_die) 5296 { 5297 ParseFunctionBlocks(sc, &sc.function->GetBlock (false), dwarf_cu, function_die, LLDB_INVALID_ADDRESS, 0); 5298 } 5299 } 5300 5301 return functions_added; 5302 } 5303 5304 5305 size_t 5306 SymbolFileDWARF::ParseTypes (const SymbolContext &sc) 5307 { 5308 // At least a compile unit must be valid 5309 assert(sc.comp_unit); 5310 size_t types_added = 0; 5311 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID()); 5312 if (dwarf_cu) 5313 { 5314 if (sc.function) 5315 { 5316 dw_offset_t function_die_offset = sc.function->GetID(); 5317 const DWARFDebugInfoEntry *func_die = dwarf_cu->GetDIEPtr(function_die_offset); 5318 if (func_die && func_die->HasChildren()) 5319 { 5320 types_added = ParseTypes(sc, dwarf_cu, func_die->GetFirstChild(), true, true); 5321 } 5322 } 5323 else 5324 { 5325 const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->DIE(); 5326 if (dwarf_cu_die && dwarf_cu_die->HasChildren()) 5327 { 5328 types_added = ParseTypes(sc, dwarf_cu, dwarf_cu_die->GetFirstChild(), true, true); 5329 } 5330 } 5331 } 5332 5333 return types_added; 5334 } 5335 5336 size_t 5337 SymbolFileDWARF::ParseVariablesForContext (const SymbolContext& sc) 5338 { 5339 if (sc.comp_unit != NULL) 5340 { 5341 DWARFDebugInfo* info = DebugInfo(); 5342 if (info == NULL) 5343 return 0; 5344 5345 uint32_t cu_idx = UINT32_MAX; 5346 DWARFCompileUnit* dwarf_cu = info->GetCompileUnit(sc.comp_unit->GetID(), &cu_idx).get(); 5347 5348 if (dwarf_cu == NULL) 5349 return 0; 5350 5351 if (sc.function) 5352 { 5353 const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(sc.function->GetID()); 5354 5355 dw_addr_t func_lo_pc = function_die->GetAttributeValueAsUnsigned (this, dwarf_cu, DW_AT_low_pc, DW_INVALID_ADDRESS); 5356 assert (func_lo_pc != DW_INVALID_ADDRESS); 5357 5358 const size_t num_variables = ParseVariables(sc, dwarf_cu, func_lo_pc, function_die->GetFirstChild(), true, true); 5359 5360 // Let all blocks know they have parse all their variables 5361 sc.function->GetBlock (false).SetDidParseVariables (true, true); 5362 5363 return num_variables; 5364 } 5365 else if (sc.comp_unit) 5366 { 5367 uint32_t vars_added = 0; 5368 VariableListSP variables (sc.comp_unit->GetVariableList(false)); 5369 5370 if (variables.get() == NULL) 5371 { 5372 variables.reset(new VariableList()); 5373 sc.comp_unit->SetVariableList(variables); 5374 5375 DWARFCompileUnit* match_dwarf_cu = NULL; 5376 const DWARFDebugInfoEntry* die = NULL; 5377 DIEArray die_offsets; 5378 if (m_using_apple_tables) 5379 { 5380 if (m_apple_names_ap.get()) 5381 { 5382 DWARFMappedHash::DIEInfoArray hash_data_array; 5383 if (m_apple_names_ap->AppendAllDIEsInRange (dwarf_cu->GetOffset(), 5384 dwarf_cu->GetNextCompileUnitOffset(), 5385 hash_data_array)) 5386 { 5387 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); 5388 } 5389 } 5390 } 5391 else 5392 { 5393 // Index if we already haven't to make sure the compile units 5394 // get indexed and make their global DIE index list 5395 if (!m_indexed) 5396 Index (); 5397 5398 m_global_index.FindAllEntriesForCompileUnit (dwarf_cu->GetOffset(), 5399 dwarf_cu->GetNextCompileUnitOffset(), 5400 die_offsets); 5401 } 5402 5403 const size_t num_matches = die_offsets.size(); 5404 if (num_matches) 5405 { 5406 DWARFDebugInfo* debug_info = DebugInfo(); 5407 for (size_t i=0; i<num_matches; ++i) 5408 { 5409 const dw_offset_t die_offset = die_offsets[i]; 5410 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &match_dwarf_cu); 5411 if (die) 5412 { 5413 VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, LLDB_INVALID_ADDRESS)); 5414 if (var_sp) 5415 { 5416 variables->AddVariableIfUnique (var_sp); 5417 ++vars_added; 5418 } 5419 } 5420 else 5421 { 5422 if (m_using_apple_tables) 5423 { 5424 ReportError (".apple_names accelerator table had bad die 0x%8.8x\n", die_offset); 5425 } 5426 } 5427 5428 } 5429 } 5430 } 5431 return vars_added; 5432 } 5433 } 5434 return 0; 5435 } 5436 5437 5438 VariableSP 5439 SymbolFileDWARF::ParseVariableDIE 5440 ( 5441 const SymbolContext& sc, 5442 DWARFCompileUnit* dwarf_cu, 5443 const DWARFDebugInfoEntry *die, 5444 const lldb::addr_t func_low_pc 5445 ) 5446 { 5447 5448 VariableSP var_sp (m_die_to_variable_sp[die]); 5449 if (var_sp) 5450 return var_sp; // Already been parsed! 5451 5452 const dw_tag_t tag = die->Tag(); 5453 5454 if ((tag == DW_TAG_variable) || 5455 (tag == DW_TAG_constant) || 5456 (tag == DW_TAG_formal_parameter && sc.function)) 5457 { 5458 DWARFDebugInfoEntry::Attributes attributes; 5459 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 5460 if (num_attributes > 0) 5461 { 5462 const char *name = NULL; 5463 const char *mangled = NULL; 5464 Declaration decl; 5465 uint32_t i; 5466 lldb::user_id_t type_uid = LLDB_INVALID_UID; 5467 DWARFExpression location; 5468 bool is_external = false; 5469 bool is_artificial = false; 5470 bool location_is_const_value_data = false; 5471 AccessType accessibility = eAccessNone; 5472 5473 for (i=0; i<num_attributes; ++i) 5474 { 5475 dw_attr_t attr = attributes.AttributeAtIndex(i); 5476 DWARFFormValue form_value; 5477 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 5478 { 5479 switch (attr) 5480 { 5481 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 5482 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 5483 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 5484 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; 5485 case DW_AT_MIPS_linkage_name: mangled = form_value.AsCString(&get_debug_str_data()); break; 5486 case DW_AT_type: type_uid = form_value.Reference(dwarf_cu); break; 5487 case DW_AT_external: is_external = form_value.Unsigned() != 0; break; 5488 case DW_AT_const_value: 5489 location_is_const_value_data = true; 5490 // Fall through... 5491 case DW_AT_location: 5492 { 5493 if (form_value.BlockData()) 5494 { 5495 const DataExtractor& debug_info_data = get_debug_info_data(); 5496 5497 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 5498 uint32_t block_length = form_value.Unsigned(); 5499 location.SetOpcodeData(get_debug_info_data(), block_offset, block_length); 5500 } 5501 else 5502 { 5503 const DataExtractor& debug_loc_data = get_debug_loc_data(); 5504 const dw_offset_t debug_loc_offset = form_value.Unsigned(); 5505 5506 size_t loc_list_length = DWARFLocationList::Size(debug_loc_data, debug_loc_offset); 5507 if (loc_list_length > 0) 5508 { 5509 location.SetOpcodeData(debug_loc_data, debug_loc_offset, loc_list_length); 5510 assert (func_low_pc != LLDB_INVALID_ADDRESS); 5511 location.SetLocationListSlide (func_low_pc - dwarf_cu->GetBaseAddress()); 5512 } 5513 } 5514 } 5515 break; 5516 5517 case DW_AT_artificial: is_artificial = form_value.Unsigned() != 0; break; 5518 case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 5519 case DW_AT_declaration: 5520 case DW_AT_description: 5521 case DW_AT_endianity: 5522 case DW_AT_segment: 5523 case DW_AT_start_scope: 5524 case DW_AT_visibility: 5525 default: 5526 case DW_AT_abstract_origin: 5527 case DW_AT_sibling: 5528 case DW_AT_specification: 5529 break; 5530 } 5531 } 5532 } 5533 5534 if (location.IsValid()) 5535 { 5536 ValueType scope = eValueTypeInvalid; 5537 5538 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die); 5539 dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; 5540 SymbolContextScope * symbol_context_scope = NULL; 5541 5542 // DWARF doesn't specify if a DW_TAG_variable is a local, global 5543 // or static variable, so we have to do a little digging by 5544 // looking at the location of a varaible to see if it contains 5545 // a DW_OP_addr opcode _somewhere_ in the definition. I say 5546 // somewhere because clang likes to combine small global variables 5547 // into the same symbol and have locations like: 5548 // DW_OP_addr(0x1000), DW_OP_constu(2), DW_OP_plus 5549 // So if we don't have a DW_TAG_formal_parameter, we can look at 5550 // the location to see if it contains a DW_OP_addr opcode, and 5551 // then we can correctly classify our variables. 5552 if (tag == DW_TAG_formal_parameter) 5553 scope = eValueTypeVariableArgument; 5554 else 5555 { 5556 // Check if the location has a DW_OP_addr with any address value... 5557 addr_t location_has_op_addr = false; 5558 if (!location_is_const_value_data) 5559 location_has_op_addr = location.LocationContains_DW_OP_addr (); 5560 5561 if (location_has_op_addr) 5562 { 5563 if (is_external) 5564 { 5565 scope = eValueTypeVariableGlobal; 5566 5567 if (m_debug_map_symfile) 5568 { 5569 // When leaving the DWARF in the .o files on darwin, 5570 // when we have a global variable that wasn't initialized, 5571 // the .o file might not have allocated a virtual 5572 // address for the global variable. In this case it will 5573 // have created a symbol for the global variable 5574 // that is undefined and external and the value will 5575 // be the byte size of the variable. When we do the 5576 // address map in SymbolFileDWARFDebugMap we rely on 5577 // having an address, we need to do some magic here 5578 // so we can get the correct address for our global 5579 // variable. The address for all of these entries 5580 // will be zero, and there will be an undefined symbol 5581 // in this object file, and the executable will have 5582 // a matching symbol with a good address. So here we 5583 // dig up the correct address and replace it in the 5584 // location for the variable, and set the variable's 5585 // symbol context scope to be that of the main executable 5586 // so the file address will resolve correctly. 5587 if (location.LocationContains_DW_OP_addr (0)) 5588 { 5589 5590 // we have a possible uninitialized extern global 5591 Symtab *symtab = m_obj_file->GetSymtab(); 5592 if (symtab) 5593 { 5594 ConstString const_name(name); 5595 Symbol *undefined_symbol = symtab->FindFirstSymbolWithNameAndType (const_name, 5596 eSymbolTypeUndefined, 5597 Symtab::eDebugNo, 5598 Symtab::eVisibilityExtern); 5599 5600 if (undefined_symbol) 5601 { 5602 ObjectFile *debug_map_objfile = m_debug_map_symfile->GetObjectFile(); 5603 if (debug_map_objfile) 5604 { 5605 Symtab *debug_map_symtab = debug_map_objfile->GetSymtab(); 5606 Symbol *defined_symbol = debug_map_symtab->FindFirstSymbolWithNameAndType (const_name, 5607 eSymbolTypeData, 5608 Symtab::eDebugYes, 5609 Symtab::eVisibilityExtern); 5610 if (defined_symbol) 5611 { 5612 const AddressRange *defined_range = defined_symbol->GetAddressRangePtr(); 5613 if (defined_range) 5614 { 5615 const addr_t defined_addr = defined_range->GetBaseAddress().GetFileAddress(); 5616 if (defined_addr != LLDB_INVALID_ADDRESS) 5617 { 5618 if (location.Update_DW_OP_addr (defined_addr)) 5619 { 5620 symbol_context_scope = defined_symbol; 5621 } 5622 } 5623 } 5624 } 5625 } 5626 } 5627 } 5628 } 5629 } 5630 } 5631 else 5632 { 5633 scope = eValueTypeVariableStatic; 5634 } 5635 } 5636 else 5637 { 5638 scope = eValueTypeVariableLocal; 5639 } 5640 } 5641 5642 if (symbol_context_scope == NULL) 5643 { 5644 switch (parent_tag) 5645 { 5646 case DW_TAG_subprogram: 5647 case DW_TAG_inlined_subroutine: 5648 case DW_TAG_lexical_block: 5649 if (sc.function) 5650 { 5651 symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); 5652 if (symbol_context_scope == NULL) 5653 symbol_context_scope = sc.function; 5654 } 5655 break; 5656 5657 default: 5658 symbol_context_scope = sc.comp_unit; 5659 break; 5660 } 5661 } 5662 5663 if (symbol_context_scope) 5664 { 5665 var_sp.reset (new Variable (MakeUserID(die->GetOffset()), 5666 name, 5667 mangled, 5668 SymbolFileTypeSP (new SymbolFileType(*this, type_uid)), 5669 scope, 5670 symbol_context_scope, 5671 &decl, 5672 location, 5673 is_external, 5674 is_artificial)); 5675 5676 var_sp->SetLocationIsConstantValueData (location_is_const_value_data); 5677 } 5678 else 5679 { 5680 // Not ready to parse this variable yet. It might be a global 5681 // or static variable that is in a function scope and the function 5682 // in the symbol context wasn't filled in yet 5683 return var_sp; 5684 } 5685 } 5686 } 5687 // Cache var_sp even if NULL (the variable was just a specification or 5688 // was missing vital information to be able to be displayed in the debugger 5689 // (missing location due to optimization, etc)) so we don't re-parse 5690 // this DIE over and over later... 5691 m_die_to_variable_sp[die] = var_sp; 5692 } 5693 return var_sp; 5694 } 5695 5696 5697 const DWARFDebugInfoEntry * 5698 SymbolFileDWARF::FindBlockContainingSpecification (dw_offset_t func_die_offset, 5699 dw_offset_t spec_block_die_offset, 5700 DWARFCompileUnit **result_die_cu_handle) 5701 { 5702 // Give the concrete function die specified by "func_die_offset", find the 5703 // concrete block whose DW_AT_specification or DW_AT_abstract_origin points 5704 // to "spec_block_die_offset" 5705 DWARFDebugInfo* info = DebugInfo(); 5706 5707 const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint(func_die_offset, result_die_cu_handle); 5708 if (die) 5709 { 5710 assert (*result_die_cu_handle); 5711 return FindBlockContainingSpecification (*result_die_cu_handle, die, spec_block_die_offset, result_die_cu_handle); 5712 } 5713 return NULL; 5714 } 5715 5716 5717 const DWARFDebugInfoEntry * 5718 SymbolFileDWARF::FindBlockContainingSpecification(DWARFCompileUnit* dwarf_cu, 5719 const DWARFDebugInfoEntry *die, 5720 dw_offset_t spec_block_die_offset, 5721 DWARFCompileUnit **result_die_cu_handle) 5722 { 5723 if (die) 5724 { 5725 switch (die->Tag()) 5726 { 5727 case DW_TAG_subprogram: 5728 case DW_TAG_inlined_subroutine: 5729 case DW_TAG_lexical_block: 5730 { 5731 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_specification, DW_INVALID_OFFSET) == spec_block_die_offset) 5732 { 5733 *result_die_cu_handle = dwarf_cu; 5734 return die; 5735 } 5736 5737 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_abstract_origin, DW_INVALID_OFFSET) == spec_block_die_offset) 5738 { 5739 *result_die_cu_handle = dwarf_cu; 5740 return die; 5741 } 5742 } 5743 break; 5744 } 5745 5746 // Give the concrete function die specified by "func_die_offset", find the 5747 // concrete block whose DW_AT_specification or DW_AT_abstract_origin points 5748 // to "spec_block_die_offset" 5749 for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); child_die != NULL; child_die = child_die->GetSibling()) 5750 { 5751 const DWARFDebugInfoEntry *result_die = FindBlockContainingSpecification (dwarf_cu, 5752 child_die, 5753 spec_block_die_offset, 5754 result_die_cu_handle); 5755 if (result_die) 5756 return result_die; 5757 } 5758 } 5759 5760 *result_die_cu_handle = NULL; 5761 return NULL; 5762 } 5763 5764 size_t 5765 SymbolFileDWARF::ParseVariables 5766 ( 5767 const SymbolContext& sc, 5768 DWARFCompileUnit* dwarf_cu, 5769 const lldb::addr_t func_low_pc, 5770 const DWARFDebugInfoEntry *orig_die, 5771 bool parse_siblings, 5772 bool parse_children, 5773 VariableList* cc_variable_list 5774 ) 5775 { 5776 if (orig_die == NULL) 5777 return 0; 5778 5779 VariableListSP variable_list_sp; 5780 5781 size_t vars_added = 0; 5782 const DWARFDebugInfoEntry *die = orig_die; 5783 while (die != NULL) 5784 { 5785 dw_tag_t tag = die->Tag(); 5786 5787 // Check to see if we have already parsed this variable or constant? 5788 if (m_die_to_variable_sp[die]) 5789 { 5790 if (cc_variable_list) 5791 cc_variable_list->AddVariableIfUnique (m_die_to_variable_sp[die]); 5792 } 5793 else 5794 { 5795 // We haven't already parsed it, lets do that now. 5796 if ((tag == DW_TAG_variable) || 5797 (tag == DW_TAG_constant) || 5798 (tag == DW_TAG_formal_parameter && sc.function)) 5799 { 5800 if (variable_list_sp.get() == NULL) 5801 { 5802 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(orig_die); 5803 dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; 5804 switch (parent_tag) 5805 { 5806 case DW_TAG_compile_unit: 5807 if (sc.comp_unit != NULL) 5808 { 5809 variable_list_sp = sc.comp_unit->GetVariableList(false); 5810 if (variable_list_sp.get() == NULL) 5811 { 5812 variable_list_sp.reset(new VariableList()); 5813 sc.comp_unit->SetVariableList(variable_list_sp); 5814 } 5815 } 5816 else 5817 { 5818 ReportError ("parent 0x%8.8llx %s with no valid compile unit in symbol context for 0x%8.8llx %s.\n", 5819 MakeUserID(sc_parent_die->GetOffset()), 5820 DW_TAG_value_to_name (parent_tag), 5821 MakeUserID(orig_die->GetOffset()), 5822 DW_TAG_value_to_name (orig_die->Tag())); 5823 } 5824 break; 5825 5826 case DW_TAG_subprogram: 5827 case DW_TAG_inlined_subroutine: 5828 case DW_TAG_lexical_block: 5829 if (sc.function != NULL) 5830 { 5831 // Check to see if we already have parsed the variables for the given scope 5832 5833 Block *block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); 5834 if (block == NULL) 5835 { 5836 // This must be a specification or abstract origin with 5837 // a concrete block couterpart in the current function. We need 5838 // to find the concrete block so we can correctly add the 5839 // variable to it 5840 DWARFCompileUnit *concrete_block_die_cu = dwarf_cu; 5841 const DWARFDebugInfoEntry *concrete_block_die = FindBlockContainingSpecification (sc.function->GetID(), 5842 sc_parent_die->GetOffset(), 5843 &concrete_block_die_cu); 5844 if (concrete_block_die) 5845 block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(concrete_block_die->GetOffset())); 5846 } 5847 5848 if (block != NULL) 5849 { 5850 const bool can_create = false; 5851 variable_list_sp = block->GetBlockVariableList (can_create); 5852 if (variable_list_sp.get() == NULL) 5853 { 5854 variable_list_sp.reset(new VariableList()); 5855 block->SetVariableList(variable_list_sp); 5856 } 5857 } 5858 } 5859 break; 5860 5861 default: 5862 ReportError ("didn't find appropriate parent DIE for variable list for 0x%8.8llx %s.\n", 5863 MakeUserID(orig_die->GetOffset()), 5864 DW_TAG_value_to_name (orig_die->Tag())); 5865 break; 5866 } 5867 } 5868 5869 if (variable_list_sp) 5870 { 5871 VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, func_low_pc)); 5872 if (var_sp) 5873 { 5874 variable_list_sp->AddVariableIfUnique (var_sp); 5875 if (cc_variable_list) 5876 cc_variable_list->AddVariableIfUnique (var_sp); 5877 ++vars_added; 5878 } 5879 } 5880 } 5881 } 5882 5883 bool skip_children = (sc.function == NULL && tag == DW_TAG_subprogram); 5884 5885 if (!skip_children && parse_children && die->HasChildren()) 5886 { 5887 vars_added += ParseVariables(sc, dwarf_cu, func_low_pc, die->GetFirstChild(), true, true, cc_variable_list); 5888 } 5889 5890 if (parse_siblings) 5891 die = die->GetSibling(); 5892 else 5893 die = NULL; 5894 } 5895 return vars_added; 5896 } 5897 5898 //------------------------------------------------------------------ 5899 // PluginInterface protocol 5900 //------------------------------------------------------------------ 5901 const char * 5902 SymbolFileDWARF::GetPluginName() 5903 { 5904 return "SymbolFileDWARF"; 5905 } 5906 5907 const char * 5908 SymbolFileDWARF::GetShortPluginName() 5909 { 5910 return GetPluginNameStatic(); 5911 } 5912 5913 uint32_t 5914 SymbolFileDWARF::GetPluginVersion() 5915 { 5916 return 1; 5917 } 5918 5919 void 5920 SymbolFileDWARF::CompleteTagDecl (void *baton, clang::TagDecl *decl) 5921 { 5922 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 5923 clang_type_t clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); 5924 if (clang_type) 5925 symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); 5926 } 5927 5928 void 5929 SymbolFileDWARF::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *decl) 5930 { 5931 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 5932 clang_type_t clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); 5933 if (clang_type) 5934 symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); 5935 } 5936 5937 void 5938 SymbolFileDWARF::DumpIndexes () 5939 { 5940 StreamFile s(stdout, false); 5941 5942 s.Printf ("DWARF index for (%s) '%s/%s':", 5943 GetObjectFile()->GetModule()->GetArchitecture().GetArchitectureName(), 5944 GetObjectFile()->GetFileSpec().GetDirectory().AsCString(), 5945 GetObjectFile()->GetFileSpec().GetFilename().AsCString()); 5946 s.Printf("\nFunction basenames:\n"); m_function_basename_index.Dump (&s); 5947 s.Printf("\nFunction fullnames:\n"); m_function_fullname_index.Dump (&s); 5948 s.Printf("\nFunction methods:\n"); m_function_method_index.Dump (&s); 5949 s.Printf("\nFunction selectors:\n"); m_function_selector_index.Dump (&s); 5950 s.Printf("\nObjective C class selectors:\n"); m_objc_class_selectors_index.Dump (&s); 5951 s.Printf("\nGlobals and statics:\n"); m_global_index.Dump (&s); 5952 s.Printf("\nTypes:\n"); m_type_index.Dump (&s); 5953 s.Printf("\nNamepaces:\n"); m_namespace_index.Dump (&s); 5954 } 5955 5956 void 5957 SymbolFileDWARF::SearchDeclContext (const clang::DeclContext *decl_context, 5958 const char *name, 5959 llvm::SmallVectorImpl <clang::NamedDecl *> *results) 5960 { 5961 DeclContextToDIEMap::iterator iter = m_decl_ctx_to_die.find(decl_context); 5962 5963 if (iter == m_decl_ctx_to_die.end()) 5964 return; 5965 5966 for (DIEPointerSet::iterator pos = iter->second.begin(), end = iter->second.end(); pos != end; ++pos) 5967 { 5968 const DWARFDebugInfoEntry *context_die = *pos; 5969 5970 if (!results) 5971 return; 5972 5973 DWARFDebugInfo* info = DebugInfo(); 5974 5975 DIEArray die_offsets; 5976 5977 DWARFCompileUnit* dwarf_cu = NULL; 5978 const DWARFDebugInfoEntry* die = NULL; 5979 5980 if (m_using_apple_tables) 5981 { 5982 if (m_apple_types_ap.get()) 5983 m_apple_types_ap->FindByName (name, die_offsets); 5984 } 5985 else 5986 { 5987 if (!m_indexed) 5988 Index (); 5989 5990 m_type_index.Find (ConstString(name), die_offsets); 5991 } 5992 5993 const size_t num_matches = die_offsets.size(); 5994 5995 if (num_matches) 5996 { 5997 for (size_t i = 0; i < num_matches; ++i) 5998 { 5999 const dw_offset_t die_offset = die_offsets[i]; 6000 die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 6001 6002 if (die->GetParent() != context_die) 6003 continue; 6004 6005 Type *matching_type = ResolveType (dwarf_cu, die); 6006 6007 lldb::clang_type_t type = matching_type->GetClangForwardType(); 6008 clang::QualType qual_type = clang::QualType::getFromOpaquePtr(type); 6009 6010 if (const clang::TagType *tag_type = llvm::dyn_cast<clang::TagType>(qual_type.getTypePtr())) 6011 { 6012 clang::TagDecl *tag_decl = tag_type->getDecl(); 6013 results->push_back(tag_decl); 6014 } 6015 else if (const clang::TypedefType *typedef_type = llvm::dyn_cast<clang::TypedefType>(qual_type.getTypePtr())) 6016 { 6017 clang::TypedefNameDecl *typedef_decl = typedef_type->getDecl(); 6018 results->push_back(typedef_decl); 6019 } 6020 } 6021 } 6022 } 6023 } 6024 6025 void 6026 SymbolFileDWARF::FindExternalVisibleDeclsByName (void *baton, 6027 const clang::DeclContext *decl_context, 6028 clang::DeclarationName decl_name, 6029 llvm::SmallVectorImpl <clang::NamedDecl *> *results) 6030 { 6031 6032 switch (decl_context->getDeclKind()) 6033 { 6034 case clang::Decl::Namespace: 6035 case clang::Decl::TranslationUnit: 6036 { 6037 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 6038 symbol_file_dwarf->SearchDeclContext (decl_context, decl_name.getAsString().c_str(), results); 6039 } 6040 break; 6041 default: 6042 break; 6043 } 6044 } 6045