SymbolFileDWARF.cpp revision 262528
1//===-- SymbolFileDWARF.cpp ------------------------------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#include "SymbolFileDWARF.h" 11 12// Other libraries and framework includes 13#include "clang/AST/ASTConsumer.h" 14#include "clang/AST/ASTContext.h" 15#include "clang/AST/Decl.h" 16#include "clang/AST/DeclGroup.h" 17#include "clang/AST/DeclObjC.h" 18#include "clang/AST/DeclTemplate.h" 19#include "clang/Basic/Builtins.h" 20#include "clang/Basic/IdentifierTable.h" 21#include "clang/Basic/LangOptions.h" 22#include "clang/Basic/SourceManager.h" 23#include "clang/Basic/TargetInfo.h" 24#include "clang/Basic/Specifiers.h" 25#include "clang/Sema/DeclSpec.h" 26 27#include "llvm/Support/Casting.h" 28 29#include "lldb/Core/Module.h" 30#include "lldb/Core/PluginManager.h" 31#include "lldb/Core/RegularExpression.h" 32#include "lldb/Core/Scalar.h" 33#include "lldb/Core/Section.h" 34#include "lldb/Core/StreamFile.h" 35#include "lldb/Core/StreamString.h" 36#include "lldb/Core/Timer.h" 37#include "lldb/Core/Value.h" 38 39#include "lldb/Host/Host.h" 40 41#include "lldb/Symbol/Block.h" 42#include "lldb/Symbol/ClangExternalASTSourceCallbacks.h" 43#include "lldb/Symbol/CompileUnit.h" 44#include "lldb/Symbol/LineTable.h" 45#include "lldb/Symbol/ObjectFile.h" 46#include "lldb/Symbol/SymbolVendor.h" 47#include "lldb/Symbol/VariableList.h" 48 49#include "lldb/Target/ObjCLanguageRuntime.h" 50#include "lldb/Target/CPPLanguageRuntime.h" 51 52#include "DWARFCompileUnit.h" 53#include "DWARFDebugAbbrev.h" 54#include "DWARFDebugAranges.h" 55#include "DWARFDebugInfo.h" 56#include "DWARFDebugInfoEntry.h" 57#include "DWARFDebugLine.h" 58#include "DWARFDebugPubnames.h" 59#include "DWARFDebugRanges.h" 60#include "DWARFDeclContext.h" 61#include "DWARFDIECollection.h" 62#include "DWARFFormValue.h" 63#include "DWARFLocationList.h" 64#include "LogChannelDWARF.h" 65#include "SymbolFileDWARFDebugMap.h" 66 67#include <map> 68 69//#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN 70 71#ifdef ENABLE_DEBUG_PRINTF 72#include <stdio.h> 73#define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__) 74#else 75#define DEBUG_PRINTF(fmt, ...) 76#endif 77 78#define DIE_IS_BEING_PARSED ((lldb_private::Type*)1) 79 80using namespace lldb; 81using namespace lldb_private; 82 83//static inline bool 84//child_requires_parent_class_union_or_struct_to_be_completed (dw_tag_t tag) 85//{ 86// switch (tag) 87// { 88// default: 89// break; 90// case DW_TAG_subprogram: 91// case DW_TAG_inlined_subroutine: 92// case DW_TAG_class_type: 93// case DW_TAG_structure_type: 94// case DW_TAG_union_type: 95// return true; 96// } 97// return false; 98//} 99// 100static AccessType 101DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility) 102{ 103 switch (dwarf_accessibility) 104 { 105 case DW_ACCESS_public: return eAccessPublic; 106 case DW_ACCESS_private: return eAccessPrivate; 107 case DW_ACCESS_protected: return eAccessProtected; 108 default: break; 109 } 110 return eAccessNone; 111} 112 113#if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE) 114 115class DIEStack 116{ 117public: 118 119 void Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) 120 { 121 m_dies.push_back (DIEInfo(cu, die)); 122 } 123 124 125 void LogDIEs (Log *log, SymbolFileDWARF *dwarf) 126 { 127 StreamString log_strm; 128 const size_t n = m_dies.size(); 129 log_strm.Printf("DIEStack[%" PRIu64 "]:\n", (uint64_t)n); 130 for (size_t i=0; i<n; i++) 131 { 132 DWARFCompileUnit *cu = m_dies[i].cu; 133 const DWARFDebugInfoEntry *die = m_dies[i].die; 134 std::string qualified_name; 135 die->GetQualifiedName(dwarf, cu, qualified_name); 136 log_strm.Printf ("[%" PRIu64 "] 0x%8.8x: %s name='%s'\n", 137 (uint64_t)i, 138 die->GetOffset(), 139 DW_TAG_value_to_name(die->Tag()), 140 qualified_name.c_str()); 141 } 142 log->PutCString(log_strm.GetData()); 143 } 144 void Pop () 145 { 146 m_dies.pop_back(); 147 } 148 149 class ScopedPopper 150 { 151 public: 152 ScopedPopper (DIEStack &die_stack) : 153 m_die_stack (die_stack), 154 m_valid (false) 155 { 156 } 157 158 void 159 Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) 160 { 161 m_valid = true; 162 m_die_stack.Push (cu, die); 163 } 164 165 ~ScopedPopper () 166 { 167 if (m_valid) 168 m_die_stack.Pop(); 169 } 170 171 172 173 protected: 174 DIEStack &m_die_stack; 175 bool m_valid; 176 }; 177 178protected: 179 struct DIEInfo { 180 DIEInfo (DWARFCompileUnit *c, const DWARFDebugInfoEntry *d) : 181 cu(c), 182 die(d) 183 { 184 } 185 DWARFCompileUnit *cu; 186 const DWARFDebugInfoEntry *die; 187 }; 188 typedef std::vector<DIEInfo> Stack; 189 Stack m_dies; 190}; 191#endif 192 193void 194SymbolFileDWARF::Initialize() 195{ 196 LogChannelDWARF::Initialize(); 197 PluginManager::RegisterPlugin (GetPluginNameStatic(), 198 GetPluginDescriptionStatic(), 199 CreateInstance); 200} 201 202void 203SymbolFileDWARF::Terminate() 204{ 205 PluginManager::UnregisterPlugin (CreateInstance); 206 LogChannelDWARF::Initialize(); 207} 208 209 210lldb_private::ConstString 211SymbolFileDWARF::GetPluginNameStatic() 212{ 213 static ConstString g_name("dwarf"); 214 return g_name; 215} 216 217const char * 218SymbolFileDWARF::GetPluginDescriptionStatic() 219{ 220 return "DWARF and DWARF3 debug symbol file reader."; 221} 222 223 224SymbolFile* 225SymbolFileDWARF::CreateInstance (ObjectFile* obj_file) 226{ 227 return new SymbolFileDWARF(obj_file); 228} 229 230TypeList * 231SymbolFileDWARF::GetTypeList () 232{ 233 if (GetDebugMapSymfile ()) 234 return m_debug_map_symfile->GetTypeList(); 235 return m_obj_file->GetModule()->GetTypeList(); 236 237} 238void 239SymbolFileDWARF::GetTypes (DWARFCompileUnit* cu, 240 const DWARFDebugInfoEntry *die, 241 dw_offset_t min_die_offset, 242 dw_offset_t max_die_offset, 243 uint32_t type_mask, 244 TypeSet &type_set) 245{ 246 if (cu) 247 { 248 if (die) 249 { 250 const dw_offset_t die_offset = die->GetOffset(); 251 252 if (die_offset >= max_die_offset) 253 return; 254 255 if (die_offset >= min_die_offset) 256 { 257 const dw_tag_t tag = die->Tag(); 258 259 bool add_type = false; 260 261 switch (tag) 262 { 263 case DW_TAG_array_type: add_type = (type_mask & eTypeClassArray ) != 0; break; 264 case DW_TAG_unspecified_type: 265 case DW_TAG_base_type: add_type = (type_mask & eTypeClassBuiltin ) != 0; break; 266 case DW_TAG_class_type: add_type = (type_mask & eTypeClassClass ) != 0; break; 267 case DW_TAG_structure_type: add_type = (type_mask & eTypeClassStruct ) != 0; break; 268 case DW_TAG_union_type: add_type = (type_mask & eTypeClassUnion ) != 0; break; 269 case DW_TAG_enumeration_type: add_type = (type_mask & eTypeClassEnumeration ) != 0; break; 270 case DW_TAG_subroutine_type: 271 case DW_TAG_subprogram: 272 case DW_TAG_inlined_subroutine: add_type = (type_mask & eTypeClassFunction ) != 0; break; 273 case DW_TAG_pointer_type: add_type = (type_mask & eTypeClassPointer ) != 0; break; 274 case DW_TAG_rvalue_reference_type: 275 case DW_TAG_reference_type: add_type = (type_mask & eTypeClassReference ) != 0; break; 276 case DW_TAG_typedef: add_type = (type_mask & eTypeClassTypedef ) != 0; break; 277 case DW_TAG_ptr_to_member_type: add_type = (type_mask & eTypeClassMemberPointer ) != 0; break; 278 } 279 280 if (add_type) 281 { 282 const bool assert_not_being_parsed = true; 283 Type *type = ResolveTypeUID (cu, die, assert_not_being_parsed); 284 if (type) 285 { 286 if (type_set.find(type) == type_set.end()) 287 type_set.insert(type); 288 } 289 } 290 } 291 292 for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); 293 child_die != NULL; 294 child_die = child_die->GetSibling()) 295 { 296 GetTypes (cu, child_die, min_die_offset, max_die_offset, type_mask, type_set); 297 } 298 } 299 } 300} 301 302size_t 303SymbolFileDWARF::GetTypes (SymbolContextScope *sc_scope, 304 uint32_t type_mask, 305 TypeList &type_list) 306 307{ 308 TypeSet type_set; 309 310 CompileUnit *comp_unit = NULL; 311 DWARFCompileUnit* dwarf_cu = NULL; 312 if (sc_scope) 313 comp_unit = sc_scope->CalculateSymbolContextCompileUnit(); 314 315 if (comp_unit) 316 { 317 dwarf_cu = GetDWARFCompileUnit(comp_unit); 318 if (dwarf_cu == 0) 319 return 0; 320 GetTypes (dwarf_cu, 321 dwarf_cu->DIE(), 322 dwarf_cu->GetOffset(), 323 dwarf_cu->GetNextCompileUnitOffset(), 324 type_mask, 325 type_set); 326 } 327 else 328 { 329 DWARFDebugInfo* info = DebugInfo(); 330 if (info) 331 { 332 const size_t num_cus = info->GetNumCompileUnits(); 333 for (size_t cu_idx=0; cu_idx<num_cus; ++cu_idx) 334 { 335 dwarf_cu = info->GetCompileUnitAtIndex(cu_idx); 336 if (dwarf_cu) 337 { 338 GetTypes (dwarf_cu, 339 dwarf_cu->DIE(), 340 0, 341 UINT32_MAX, 342 type_mask, 343 type_set); 344 } 345 } 346 } 347 } 348// if (m_using_apple_tables) 349// { 350// DWARFMappedHash::MemoryTable *apple_types = m_apple_types_ap.get(); 351// if (apple_types) 352// { 353// apple_types->ForEach([this, &type_set, apple_types, type_mask](const DWARFMappedHash::DIEInfoArray &die_info_array) -> bool { 354// 355// for (auto die_info: die_info_array) 356// { 357// bool add_type = TagMatchesTypeMask (type_mask, 0); 358// if (!add_type) 359// { 360// dw_tag_t tag = die_info.tag; 361// if (tag == 0) 362// { 363// const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtr(die_info.offset, NULL); 364// tag = die->Tag(); 365// } 366// add_type = TagMatchesTypeMask (type_mask, tag); 367// } 368// if (add_type) 369// { 370// Type *type = ResolveTypeUID(die_info.offset); 371// 372// if (type_set.find(type) == type_set.end()) 373// type_set.insert(type); 374// } 375// } 376// return true; // Keep iterating 377// }); 378// } 379// } 380// else 381// { 382// if (!m_indexed) 383// Index (); 384// 385// m_type_index.ForEach([this, &type_set, type_mask](const char *name, uint32_t die_offset) -> bool { 386// 387// bool add_type = TagMatchesTypeMask (type_mask, 0); 388// 389// if (!add_type) 390// { 391// const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtr(die_offset, NULL); 392// if (die) 393// { 394// const dw_tag_t tag = die->Tag(); 395// add_type = TagMatchesTypeMask (type_mask, tag); 396// } 397// } 398// 399// if (add_type) 400// { 401// Type *type = ResolveTypeUID(die_offset); 402// 403// if (type_set.find(type) == type_set.end()) 404// type_set.insert(type); 405// } 406// return true; // Keep iterating 407// }); 408// } 409 410 std::set<ClangASTType> clang_type_set; 411 size_t num_types_added = 0; 412 for (Type *type : type_set) 413 { 414 ClangASTType clang_type = type->GetClangForwardType(); 415 if (clang_type_set.find(clang_type) == clang_type_set.end()) 416 { 417 clang_type_set.insert(clang_type); 418 type_list.Insert (type->shared_from_this()); 419 ++num_types_added; 420 } 421 } 422 return num_types_added; 423} 424 425 426//---------------------------------------------------------------------- 427// Gets the first parent that is a lexical block, function or inlined 428// subroutine, or compile unit. 429//---------------------------------------------------------------------- 430static const DWARFDebugInfoEntry * 431GetParentSymbolContextDIE(const DWARFDebugInfoEntry *child_die) 432{ 433 const DWARFDebugInfoEntry *die; 434 for (die = child_die->GetParent(); die != NULL; die = die->GetParent()) 435 { 436 dw_tag_t tag = die->Tag(); 437 438 switch (tag) 439 { 440 case DW_TAG_compile_unit: 441 case DW_TAG_subprogram: 442 case DW_TAG_inlined_subroutine: 443 case DW_TAG_lexical_block: 444 return die; 445 } 446 } 447 return NULL; 448} 449 450 451SymbolFileDWARF::SymbolFileDWARF(ObjectFile* objfile) : 452 SymbolFile (objfile), 453 UserID (0), // Used by SymbolFileDWARFDebugMap to when this class parses .o files to contain the .o file index/ID 454 m_debug_map_module_wp (), 455 m_debug_map_symfile (NULL), 456 m_clang_tu_decl (NULL), 457 m_flags(), 458 m_data_debug_abbrev (), 459 m_data_debug_aranges (), 460 m_data_debug_frame (), 461 m_data_debug_info (), 462 m_data_debug_line (), 463 m_data_debug_loc (), 464 m_data_debug_ranges (), 465 m_data_debug_str (), 466 m_data_apple_names (), 467 m_data_apple_types (), 468 m_data_apple_namespaces (), 469 m_abbr(), 470 m_info(), 471 m_line(), 472 m_apple_names_ap (), 473 m_apple_types_ap (), 474 m_apple_namespaces_ap (), 475 m_apple_objc_ap (), 476 m_function_basename_index(), 477 m_function_fullname_index(), 478 m_function_method_index(), 479 m_function_selector_index(), 480 m_objc_class_selectors_index(), 481 m_global_index(), 482 m_type_index(), 483 m_namespace_index(), 484 m_indexed (false), 485 m_is_external_ast_source (false), 486 m_using_apple_tables (false), 487 m_supports_DW_AT_APPLE_objc_complete_type (eLazyBoolCalculate), 488 m_ranges(), 489 m_unique_ast_type_map () 490{ 491} 492 493SymbolFileDWARF::~SymbolFileDWARF() 494{ 495 if (m_is_external_ast_source) 496 { 497 ModuleSP module_sp (m_obj_file->GetModule()); 498 if (module_sp) 499 module_sp->GetClangASTContext().RemoveExternalSource (); 500 } 501} 502 503static const ConstString & 504GetDWARFMachOSegmentName () 505{ 506 static ConstString g_dwarf_section_name ("__DWARF"); 507 return g_dwarf_section_name; 508} 509 510UniqueDWARFASTTypeMap & 511SymbolFileDWARF::GetUniqueDWARFASTTypeMap () 512{ 513 if (GetDebugMapSymfile ()) 514 return m_debug_map_symfile->GetUniqueDWARFASTTypeMap (); 515 return m_unique_ast_type_map; 516} 517 518ClangASTContext & 519SymbolFileDWARF::GetClangASTContext () 520{ 521 if (GetDebugMapSymfile ()) 522 return m_debug_map_symfile->GetClangASTContext (); 523 524 ClangASTContext &ast = m_obj_file->GetModule()->GetClangASTContext(); 525 if (!m_is_external_ast_source) 526 { 527 m_is_external_ast_source = true; 528 llvm::OwningPtr<clang::ExternalASTSource> ast_source_ap ( 529 new ClangExternalASTSourceCallbacks (SymbolFileDWARF::CompleteTagDecl, 530 SymbolFileDWARF::CompleteObjCInterfaceDecl, 531 SymbolFileDWARF::FindExternalVisibleDeclsByName, 532 SymbolFileDWARF::LayoutRecordType, 533 this)); 534 ast.SetExternalSource (ast_source_ap); 535 } 536 return ast; 537} 538 539void 540SymbolFileDWARF::InitializeObject() 541{ 542 // Install our external AST source callbacks so we can complete Clang types. 543 ModuleSP module_sp (m_obj_file->GetModule()); 544 if (module_sp) 545 { 546 const SectionList *section_list = module_sp->GetSectionList(); 547 548 const Section* section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get(); 549 550 // Memory map the DWARF mach-o segment so we have everything mmap'ed 551 // to keep our heap memory usage down. 552 if (section) 553 m_obj_file->MemoryMapSectionData(section, m_dwarf_data); 554 } 555 get_apple_names_data(); 556 if (m_data_apple_names.GetByteSize() > 0) 557 { 558 m_apple_names_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_names, get_debug_str_data(), ".apple_names")); 559 if (m_apple_names_ap->IsValid()) 560 m_using_apple_tables = true; 561 else 562 m_apple_names_ap.reset(); 563 } 564 get_apple_types_data(); 565 if (m_data_apple_types.GetByteSize() > 0) 566 { 567 m_apple_types_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_types, get_debug_str_data(), ".apple_types")); 568 if (m_apple_types_ap->IsValid()) 569 m_using_apple_tables = true; 570 else 571 m_apple_types_ap.reset(); 572 } 573 574 get_apple_namespaces_data(); 575 if (m_data_apple_namespaces.GetByteSize() > 0) 576 { 577 m_apple_namespaces_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_namespaces, get_debug_str_data(), ".apple_namespaces")); 578 if (m_apple_namespaces_ap->IsValid()) 579 m_using_apple_tables = true; 580 else 581 m_apple_namespaces_ap.reset(); 582 } 583 584 get_apple_objc_data(); 585 if (m_data_apple_objc.GetByteSize() > 0) 586 { 587 m_apple_objc_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_objc, get_debug_str_data(), ".apple_objc")); 588 if (m_apple_objc_ap->IsValid()) 589 m_using_apple_tables = true; 590 else 591 m_apple_objc_ap.reset(); 592 } 593} 594 595bool 596SymbolFileDWARF::SupportedVersion(uint16_t version) 597{ 598 return version == 2 || version == 3 || version == 4; 599} 600 601uint32_t 602SymbolFileDWARF::CalculateAbilities () 603{ 604 uint32_t abilities = 0; 605 if (m_obj_file != NULL) 606 { 607 const Section* section = NULL; 608 const SectionList *section_list = m_obj_file->GetSectionList(); 609 if (section_list == NULL) 610 return 0; 611 612 uint64_t debug_abbrev_file_size = 0; 613 uint64_t debug_info_file_size = 0; 614 uint64_t debug_line_file_size = 0; 615 616 section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get(); 617 618 if (section) 619 section_list = §ion->GetChildren (); 620 621 section = section_list->FindSectionByType (eSectionTypeDWARFDebugInfo, true).get(); 622 if (section != NULL) 623 { 624 debug_info_file_size = section->GetFileSize(); 625 626 section = section_list->FindSectionByType (eSectionTypeDWARFDebugAbbrev, true).get(); 627 if (section) 628 debug_abbrev_file_size = section->GetFileSize(); 629 else 630 m_flags.Set (flagsGotDebugAbbrevData); 631 632 section = section_list->FindSectionByType (eSectionTypeDWARFDebugAranges, true).get(); 633 if (!section) 634 m_flags.Set (flagsGotDebugArangesData); 635 636 section = section_list->FindSectionByType (eSectionTypeDWARFDebugFrame, true).get(); 637 if (!section) 638 m_flags.Set (flagsGotDebugFrameData); 639 640 section = section_list->FindSectionByType (eSectionTypeDWARFDebugLine, true).get(); 641 if (section) 642 debug_line_file_size = section->GetFileSize(); 643 else 644 m_flags.Set (flagsGotDebugLineData); 645 646 section = section_list->FindSectionByType (eSectionTypeDWARFDebugLoc, true).get(); 647 if (!section) 648 m_flags.Set (flagsGotDebugLocData); 649 650 section = section_list->FindSectionByType (eSectionTypeDWARFDebugMacInfo, true).get(); 651 if (!section) 652 m_flags.Set (flagsGotDebugMacInfoData); 653 654 section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubNames, true).get(); 655 if (!section) 656 m_flags.Set (flagsGotDebugPubNamesData); 657 658 section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubTypes, true).get(); 659 if (!section) 660 m_flags.Set (flagsGotDebugPubTypesData); 661 662 section = section_list->FindSectionByType (eSectionTypeDWARFDebugRanges, true).get(); 663 if (!section) 664 m_flags.Set (flagsGotDebugRangesData); 665 666 section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get(); 667 if (!section) 668 m_flags.Set (flagsGotDebugStrData); 669 } 670 else 671 { 672 const char *symfile_dir_cstr = m_obj_file->GetFileSpec().GetDirectory().GetCString(); 673 if (symfile_dir_cstr) 674 { 675 if (strcasestr(symfile_dir_cstr, ".dsym")) 676 { 677 if (m_obj_file->GetType() == ObjectFile::eTypeDebugInfo) 678 { 679 // We have a dSYM file that didn't have a any debug info. 680 // If the string table has a size of 1, then it was made from 681 // an executable with no debug info, or from an executable that 682 // was stripped. 683 section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get(); 684 if (section && section->GetFileSize() == 1) 685 { 686 m_obj_file->GetModule()->ReportWarning ("empty dSYM file detected, dSYM was created with an executable with no debug info."); 687 } 688 } 689 } 690 } 691 } 692 693 if (debug_abbrev_file_size > 0 && debug_info_file_size > 0) 694 abilities |= CompileUnits | Functions | Blocks | GlobalVariables | LocalVariables | VariableTypes; 695 696 if (debug_line_file_size > 0) 697 abilities |= LineTables; 698 } 699 return abilities; 700} 701 702const DWARFDataExtractor& 703SymbolFileDWARF::GetCachedSectionData (uint32_t got_flag, SectionType sect_type, DWARFDataExtractor &data) 704{ 705 if (m_flags.IsClear (got_flag)) 706 { 707 ModuleSP module_sp (m_obj_file->GetModule()); 708 m_flags.Set (got_flag); 709 const SectionList *section_list = module_sp->GetSectionList(); 710 if (section_list) 711 { 712 SectionSP section_sp (section_list->FindSectionByType(sect_type, true)); 713 if (section_sp) 714 { 715 // See if we memory mapped the DWARF segment? 716 if (m_dwarf_data.GetByteSize()) 717 { 718 data.SetData(m_dwarf_data, section_sp->GetOffset (), section_sp->GetFileSize()); 719 } 720 else 721 { 722 if (m_obj_file->ReadSectionData (section_sp.get(), data) == 0) 723 data.Clear(); 724 } 725 } 726 } 727 } 728 return data; 729} 730 731const DWARFDataExtractor& 732SymbolFileDWARF::get_debug_abbrev_data() 733{ 734 return GetCachedSectionData (flagsGotDebugAbbrevData, eSectionTypeDWARFDebugAbbrev, m_data_debug_abbrev); 735} 736 737const DWARFDataExtractor& 738SymbolFileDWARF::get_debug_aranges_data() 739{ 740 return GetCachedSectionData (flagsGotDebugArangesData, eSectionTypeDWARFDebugAranges, m_data_debug_aranges); 741} 742 743const DWARFDataExtractor& 744SymbolFileDWARF::get_debug_frame_data() 745{ 746 return GetCachedSectionData (flagsGotDebugFrameData, eSectionTypeDWARFDebugFrame, m_data_debug_frame); 747} 748 749const DWARFDataExtractor& 750SymbolFileDWARF::get_debug_info_data() 751{ 752 return GetCachedSectionData (flagsGotDebugInfoData, eSectionTypeDWARFDebugInfo, m_data_debug_info); 753} 754 755const DWARFDataExtractor& 756SymbolFileDWARF::get_debug_line_data() 757{ 758 return GetCachedSectionData (flagsGotDebugLineData, eSectionTypeDWARFDebugLine, m_data_debug_line); 759} 760 761const DWARFDataExtractor& 762SymbolFileDWARF::get_debug_loc_data() 763{ 764 return GetCachedSectionData (flagsGotDebugLocData, eSectionTypeDWARFDebugLoc, m_data_debug_loc); 765} 766 767const DWARFDataExtractor& 768SymbolFileDWARF::get_debug_ranges_data() 769{ 770 return GetCachedSectionData (flagsGotDebugRangesData, eSectionTypeDWARFDebugRanges, m_data_debug_ranges); 771} 772 773const DWARFDataExtractor& 774SymbolFileDWARF::get_debug_str_data() 775{ 776 return GetCachedSectionData (flagsGotDebugStrData, eSectionTypeDWARFDebugStr, m_data_debug_str); 777} 778 779const DWARFDataExtractor& 780SymbolFileDWARF::get_apple_names_data() 781{ 782 return GetCachedSectionData (flagsGotAppleNamesData, eSectionTypeDWARFAppleNames, m_data_apple_names); 783} 784 785const DWARFDataExtractor& 786SymbolFileDWARF::get_apple_types_data() 787{ 788 return GetCachedSectionData (flagsGotAppleTypesData, eSectionTypeDWARFAppleTypes, m_data_apple_types); 789} 790 791const DWARFDataExtractor& 792SymbolFileDWARF::get_apple_namespaces_data() 793{ 794 return GetCachedSectionData (flagsGotAppleNamespacesData, eSectionTypeDWARFAppleNamespaces, m_data_apple_namespaces); 795} 796 797const DWARFDataExtractor& 798SymbolFileDWARF::get_apple_objc_data() 799{ 800 return GetCachedSectionData (flagsGotAppleObjCData, eSectionTypeDWARFAppleObjC, m_data_apple_objc); 801} 802 803 804DWARFDebugAbbrev* 805SymbolFileDWARF::DebugAbbrev() 806{ 807 if (m_abbr.get() == NULL) 808 { 809 const DWARFDataExtractor &debug_abbrev_data = get_debug_abbrev_data(); 810 if (debug_abbrev_data.GetByteSize() > 0) 811 { 812 m_abbr.reset(new DWARFDebugAbbrev()); 813 if (m_abbr.get()) 814 m_abbr->Parse(debug_abbrev_data); 815 } 816 } 817 return m_abbr.get(); 818} 819 820const DWARFDebugAbbrev* 821SymbolFileDWARF::DebugAbbrev() const 822{ 823 return m_abbr.get(); 824} 825 826 827DWARFDebugInfo* 828SymbolFileDWARF::DebugInfo() 829{ 830 if (m_info.get() == NULL) 831 { 832 Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this); 833 if (get_debug_info_data().GetByteSize() > 0) 834 { 835 m_info.reset(new DWARFDebugInfo()); 836 if (m_info.get()) 837 { 838 m_info->SetDwarfData(this); 839 } 840 } 841 } 842 return m_info.get(); 843} 844 845const DWARFDebugInfo* 846SymbolFileDWARF::DebugInfo() const 847{ 848 return m_info.get(); 849} 850 851DWARFCompileUnit* 852SymbolFileDWARF::GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit) 853{ 854 DWARFDebugInfo* info = DebugInfo(); 855 if (info) 856 { 857 if (GetDebugMapSymfile ()) 858 { 859 // The debug map symbol file made the compile units for this DWARF 860 // file which is .o file with DWARF in it, and we should have 861 // only 1 compile unit which is at offset zero in the DWARF. 862 // TODO: modify to support LTO .o files where each .o file might 863 // have multiple DW_TAG_compile_unit tags. 864 return info->GetCompileUnit(0).get(); 865 } 866 else 867 { 868 // Just a normal DWARF file whose user ID for the compile unit is 869 // the DWARF offset itself 870 return info->GetCompileUnit((dw_offset_t)comp_unit->GetID()).get(); 871 } 872 } 873 return NULL; 874} 875 876 877DWARFDebugRanges* 878SymbolFileDWARF::DebugRanges() 879{ 880 if (m_ranges.get() == NULL) 881 { 882 Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this); 883 if (get_debug_ranges_data().GetByteSize() > 0) 884 { 885 m_ranges.reset(new DWARFDebugRanges()); 886 if (m_ranges.get()) 887 m_ranges->Extract(this); 888 } 889 } 890 return m_ranges.get(); 891} 892 893const DWARFDebugRanges* 894SymbolFileDWARF::DebugRanges() const 895{ 896 return m_ranges.get(); 897} 898 899lldb::CompUnitSP 900SymbolFileDWARF::ParseCompileUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx) 901{ 902 CompUnitSP cu_sp; 903 if (dwarf_cu) 904 { 905 CompileUnit *comp_unit = (CompileUnit*)dwarf_cu->GetUserData(); 906 if (comp_unit) 907 { 908 // We already parsed this compile unit, had out a shared pointer to it 909 cu_sp = comp_unit->shared_from_this(); 910 } 911 else 912 { 913 if (GetDebugMapSymfile ()) 914 { 915 // Let the debug map create the compile unit 916 cu_sp = m_debug_map_symfile->GetCompileUnit(this); 917 dwarf_cu->SetUserData(cu_sp.get()); 918 } 919 else 920 { 921 ModuleSP module_sp (m_obj_file->GetModule()); 922 if (module_sp) 923 { 924 const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly (); 925 if (cu_die) 926 { 927 const char * cu_die_name = cu_die->GetName(this, dwarf_cu); 928 const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL); 929 LanguageType cu_language = (LanguageType)cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0); 930 if (cu_die_name) 931 { 932 std::string ramapped_file; 933 FileSpec cu_file_spec; 934 935 if (cu_die_name[0] == '/' || cu_comp_dir == NULL || cu_comp_dir[0] == '\0') 936 { 937 // If we have a full path to the compile unit, we don't need to resolve 938 // the file. This can be expensive e.g. when the source files are NFS mounted. 939 if (module_sp->RemapSourceFile(cu_die_name, ramapped_file)) 940 cu_file_spec.SetFile (ramapped_file.c_str(), false); 941 else 942 cu_file_spec.SetFile (cu_die_name, false); 943 } 944 else 945 { 946 std::string fullpath(cu_comp_dir); 947 if (*fullpath.rbegin() != '/') 948 fullpath += '/'; 949 fullpath += cu_die_name; 950 if (module_sp->RemapSourceFile (fullpath.c_str(), ramapped_file)) 951 cu_file_spec.SetFile (ramapped_file.c_str(), false); 952 else 953 cu_file_spec.SetFile (fullpath.c_str(), false); 954 } 955 956 cu_sp.reset(new CompileUnit (module_sp, 957 dwarf_cu, 958 cu_file_spec, 959 MakeUserID(dwarf_cu->GetOffset()), 960 cu_language)); 961 if (cu_sp) 962 { 963 dwarf_cu->SetUserData(cu_sp.get()); 964 965 // Figure out the compile unit index if we weren't given one 966 if (cu_idx == UINT32_MAX) 967 DebugInfo()->GetCompileUnit(dwarf_cu->GetOffset(), &cu_idx); 968 969 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp); 970 } 971 } 972 } 973 } 974 } 975 } 976 } 977 return cu_sp; 978} 979 980uint32_t 981SymbolFileDWARF::GetNumCompileUnits() 982{ 983 DWARFDebugInfo* info = DebugInfo(); 984 if (info) 985 return info->GetNumCompileUnits(); 986 return 0; 987} 988 989CompUnitSP 990SymbolFileDWARF::ParseCompileUnitAtIndex(uint32_t cu_idx) 991{ 992 CompUnitSP cu_sp; 993 DWARFDebugInfo* info = DebugInfo(); 994 if (info) 995 { 996 DWARFCompileUnit* dwarf_cu = info->GetCompileUnitAtIndex(cu_idx); 997 if (dwarf_cu) 998 cu_sp = ParseCompileUnit(dwarf_cu, cu_idx); 999 } 1000 return cu_sp; 1001} 1002 1003static void 1004AddRangesToBlock (Block& block, 1005 DWARFDebugRanges::RangeList& ranges, 1006 addr_t block_base_addr) 1007{ 1008 const size_t num_ranges = ranges.GetSize(); 1009 for (size_t i = 0; i<num_ranges; ++i) 1010 { 1011 const DWARFDebugRanges::Range &range = ranges.GetEntryRef (i); 1012 const addr_t range_base = range.GetRangeBase(); 1013 assert (range_base >= block_base_addr); 1014 block.AddRange(Block::Range (range_base - block_base_addr, range.GetByteSize()));; 1015 } 1016 block.FinalizeRanges (); 1017} 1018 1019 1020Function * 1021SymbolFileDWARF::ParseCompileUnitFunction (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die) 1022{ 1023 DWARFDebugRanges::RangeList func_ranges; 1024 const char *name = NULL; 1025 const char *mangled = NULL; 1026 int decl_file = 0; 1027 int decl_line = 0; 1028 int decl_column = 0; 1029 int call_file = 0; 1030 int call_line = 0; 1031 int call_column = 0; 1032 DWARFExpression frame_base; 1033 1034 assert (die->Tag() == DW_TAG_subprogram); 1035 1036 if (die->Tag() != DW_TAG_subprogram) 1037 return NULL; 1038 1039 if (die->GetDIENamesAndRanges (this, 1040 dwarf_cu, 1041 name, 1042 mangled, 1043 func_ranges, 1044 decl_file, 1045 decl_line, 1046 decl_column, 1047 call_file, 1048 call_line, 1049 call_column, 1050 &frame_base)) 1051 { 1052 // Union of all ranges in the function DIE (if the function is discontiguous) 1053 AddressRange func_range; 1054 lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase (0); 1055 lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd (0); 1056 if (lowest_func_addr != LLDB_INVALID_ADDRESS && lowest_func_addr <= highest_func_addr) 1057 { 1058 ModuleSP module_sp (m_obj_file->GetModule()); 1059 func_range.GetBaseAddress().ResolveAddressUsingFileSections (lowest_func_addr, module_sp->GetSectionList()); 1060 if (func_range.GetBaseAddress().IsValid()) 1061 func_range.SetByteSize(highest_func_addr - lowest_func_addr); 1062 } 1063 1064 if (func_range.GetBaseAddress().IsValid()) 1065 { 1066 Mangled func_name; 1067 if (mangled) 1068 func_name.SetValue(ConstString(mangled), true); 1069 else if (name) 1070 func_name.SetValue(ConstString(name), false); 1071 1072 FunctionSP func_sp; 1073 std::unique_ptr<Declaration> decl_ap; 1074 if (decl_file != 0 || decl_line != 0 || decl_column != 0) 1075 decl_ap.reset(new Declaration (sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), 1076 decl_line, 1077 decl_column)); 1078 1079 // Supply the type _only_ if it has already been parsed 1080 Type *func_type = m_die_to_type.lookup (die); 1081 1082 assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED); 1083 1084 if (FixupAddress (func_range.GetBaseAddress())) 1085 { 1086 const user_id_t func_user_id = MakeUserID(die->GetOffset()); 1087 func_sp.reset(new Function (sc.comp_unit, 1088 MakeUserID(func_user_id), // UserID is the DIE offset 1089 MakeUserID(func_user_id), 1090 func_name, 1091 func_type, 1092 func_range)); // first address range 1093 1094 if (func_sp.get() != NULL) 1095 { 1096 if (frame_base.IsValid()) 1097 func_sp->GetFrameBaseExpression() = frame_base; 1098 sc.comp_unit->AddFunction(func_sp); 1099 return func_sp.get(); 1100 } 1101 } 1102 } 1103 } 1104 return NULL; 1105} 1106 1107bool 1108SymbolFileDWARF::FixupAddress (Address &addr) 1109{ 1110 SymbolFileDWARFDebugMap * debug_map_symfile = GetDebugMapSymfile (); 1111 if (debug_map_symfile) 1112 { 1113 return debug_map_symfile->LinkOSOAddress(addr); 1114 } 1115 // This is a normal DWARF file, no address fixups need to happen 1116 return true; 1117} 1118lldb::LanguageType 1119SymbolFileDWARF::ParseCompileUnitLanguage (const SymbolContext& sc) 1120{ 1121 assert (sc.comp_unit); 1122 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 1123 if (dwarf_cu) 1124 { 1125 const DWARFDebugInfoEntry *die = dwarf_cu->GetCompileUnitDIEOnly(); 1126 if (die) 1127 { 1128 const uint32_t language = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0); 1129 if (language) 1130 return (lldb::LanguageType)language; 1131 } 1132 } 1133 return eLanguageTypeUnknown; 1134} 1135 1136size_t 1137SymbolFileDWARF::ParseCompileUnitFunctions(const SymbolContext &sc) 1138{ 1139 assert (sc.comp_unit); 1140 size_t functions_added = 0; 1141 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 1142 if (dwarf_cu) 1143 { 1144 DWARFDIECollection function_dies; 1145 const size_t num_functions = dwarf_cu->AppendDIEsWithTag (DW_TAG_subprogram, function_dies); 1146 size_t func_idx; 1147 for (func_idx = 0; func_idx < num_functions; ++func_idx) 1148 { 1149 const DWARFDebugInfoEntry *die = function_dies.GetDIEPtrAtIndex(func_idx); 1150 if (sc.comp_unit->FindFunctionByUID (MakeUserID(die->GetOffset())).get() == NULL) 1151 { 1152 if (ParseCompileUnitFunction(sc, dwarf_cu, die)) 1153 ++functions_added; 1154 } 1155 } 1156 //FixupTypes(); 1157 } 1158 return functions_added; 1159} 1160 1161bool 1162SymbolFileDWARF::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList& support_files) 1163{ 1164 assert (sc.comp_unit); 1165 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 1166 if (dwarf_cu) 1167 { 1168 const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly(); 1169 1170 if (cu_die) 1171 { 1172 const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL); 1173 dw_offset_t stmt_list = cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET); 1174 1175 // All file indexes in DWARF are one based and a file of index zero is 1176 // supposed to be the compile unit itself. 1177 support_files.Append (*sc.comp_unit); 1178 1179 return DWARFDebugLine::ParseSupportFiles(sc.comp_unit->GetModule(), get_debug_line_data(), cu_comp_dir, stmt_list, support_files); 1180 } 1181 } 1182 return false; 1183} 1184 1185struct ParseDWARFLineTableCallbackInfo 1186{ 1187 LineTable* line_table; 1188 std::unique_ptr<LineSequence> sequence_ap; 1189}; 1190 1191//---------------------------------------------------------------------- 1192// ParseStatementTableCallback 1193//---------------------------------------------------------------------- 1194static void 1195ParseDWARFLineTableCallback(dw_offset_t offset, const DWARFDebugLine::State& state, void* userData) 1196{ 1197 if (state.row == DWARFDebugLine::State::StartParsingLineTable) 1198 { 1199 // Just started parsing the line table 1200 } 1201 else if (state.row == DWARFDebugLine::State::DoneParsingLineTable) 1202 { 1203 // Done parsing line table, nothing to do for the cleanup 1204 } 1205 else 1206 { 1207 ParseDWARFLineTableCallbackInfo* info = (ParseDWARFLineTableCallbackInfo*)userData; 1208 LineTable* line_table = info->line_table; 1209 1210 // If this is our first time here, we need to create a 1211 // sequence container. 1212 if (!info->sequence_ap.get()) 1213 { 1214 info->sequence_ap.reset(line_table->CreateLineSequenceContainer()); 1215 assert(info->sequence_ap.get()); 1216 } 1217 line_table->AppendLineEntryToSequence (info->sequence_ap.get(), 1218 state.address, 1219 state.line, 1220 state.column, 1221 state.file, 1222 state.is_stmt, 1223 state.basic_block, 1224 state.prologue_end, 1225 state.epilogue_begin, 1226 state.end_sequence); 1227 if (state.end_sequence) 1228 { 1229 // First, put the current sequence into the line table. 1230 line_table->InsertSequence(info->sequence_ap.get()); 1231 // Then, empty it to prepare for the next sequence. 1232 info->sequence_ap->Clear(); 1233 } 1234 } 1235} 1236 1237bool 1238SymbolFileDWARF::ParseCompileUnitLineTable (const SymbolContext &sc) 1239{ 1240 assert (sc.comp_unit); 1241 if (sc.comp_unit->GetLineTable() != NULL) 1242 return true; 1243 1244 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 1245 if (dwarf_cu) 1246 { 1247 const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->GetCompileUnitDIEOnly(); 1248 if (dwarf_cu_die) 1249 { 1250 const dw_offset_t cu_line_offset = dwarf_cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET); 1251 if (cu_line_offset != DW_INVALID_OFFSET) 1252 { 1253 std::unique_ptr<LineTable> line_table_ap(new LineTable(sc.comp_unit)); 1254 if (line_table_ap.get()) 1255 { 1256 ParseDWARFLineTableCallbackInfo info; 1257 info.line_table = line_table_ap.get(); 1258 lldb::offset_t offset = cu_line_offset; 1259 DWARFDebugLine::ParseStatementTable(get_debug_line_data(), &offset, ParseDWARFLineTableCallback, &info); 1260 if (m_debug_map_symfile) 1261 { 1262 // We have an object file that has a line table with addresses 1263 // that are not linked. We need to link the line table and convert 1264 // the addresses that are relative to the .o file into addresses 1265 // for the main executable. 1266 sc.comp_unit->SetLineTable (m_debug_map_symfile->LinkOSOLineTable (this, line_table_ap.get())); 1267 } 1268 else 1269 { 1270 sc.comp_unit->SetLineTable(line_table_ap.release()); 1271 return true; 1272 } 1273 } 1274 } 1275 } 1276 } 1277 return false; 1278} 1279 1280size_t 1281SymbolFileDWARF::ParseFunctionBlocks 1282( 1283 const SymbolContext& sc, 1284 Block *parent_block, 1285 DWARFCompileUnit* dwarf_cu, 1286 const DWARFDebugInfoEntry *die, 1287 addr_t subprogram_low_pc, 1288 uint32_t depth 1289) 1290{ 1291 size_t blocks_added = 0; 1292 while (die != NULL) 1293 { 1294 dw_tag_t tag = die->Tag(); 1295 1296 switch (tag) 1297 { 1298 case DW_TAG_inlined_subroutine: 1299 case DW_TAG_subprogram: 1300 case DW_TAG_lexical_block: 1301 { 1302 Block *block = NULL; 1303 if (tag == DW_TAG_subprogram) 1304 { 1305 // Skip any DW_TAG_subprogram DIEs that are inside 1306 // of a normal or inlined functions. These will be 1307 // parsed on their own as separate entities. 1308 1309 if (depth > 0) 1310 break; 1311 1312 block = parent_block; 1313 } 1314 else 1315 { 1316 BlockSP block_sp(new Block (MakeUserID(die->GetOffset()))); 1317 parent_block->AddChild(block_sp); 1318 block = block_sp.get(); 1319 } 1320 DWARFDebugRanges::RangeList ranges; 1321 const char *name = NULL; 1322 const char *mangled_name = NULL; 1323 1324 int decl_file = 0; 1325 int decl_line = 0; 1326 int decl_column = 0; 1327 int call_file = 0; 1328 int call_line = 0; 1329 int call_column = 0; 1330 if (die->GetDIENamesAndRanges (this, 1331 dwarf_cu, 1332 name, 1333 mangled_name, 1334 ranges, 1335 decl_file, decl_line, decl_column, 1336 call_file, call_line, call_column)) 1337 { 1338 if (tag == DW_TAG_subprogram) 1339 { 1340 assert (subprogram_low_pc == LLDB_INVALID_ADDRESS); 1341 subprogram_low_pc = ranges.GetMinRangeBase(0); 1342 } 1343 else if (tag == DW_TAG_inlined_subroutine) 1344 { 1345 // We get called here for inlined subroutines in two ways. 1346 // The first time is when we are making the Function object 1347 // for this inlined concrete instance. Since we're creating a top level block at 1348 // here, the subprogram_low_pc will be LLDB_INVALID_ADDRESS. So we need to 1349 // adjust the containing address. 1350 // The second time is when we are parsing the blocks inside the function that contains 1351 // the inlined concrete instance. Since these will be blocks inside the containing "real" 1352 // function the offset will be for that function. 1353 if (subprogram_low_pc == LLDB_INVALID_ADDRESS) 1354 { 1355 subprogram_low_pc = ranges.GetMinRangeBase(0); 1356 } 1357 } 1358 1359 AddRangesToBlock (*block, ranges, subprogram_low_pc); 1360 1361 if (tag != DW_TAG_subprogram && (name != NULL || mangled_name != NULL)) 1362 { 1363 std::unique_ptr<Declaration> decl_ap; 1364 if (decl_file != 0 || decl_line != 0 || decl_column != 0) 1365 decl_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), 1366 decl_line, decl_column)); 1367 1368 std::unique_ptr<Declaration> call_ap; 1369 if (call_file != 0 || call_line != 0 || call_column != 0) 1370 call_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(call_file), 1371 call_line, call_column)); 1372 1373 block->SetInlinedFunctionInfo (name, mangled_name, decl_ap.get(), call_ap.get()); 1374 } 1375 1376 ++blocks_added; 1377 1378 if (die->HasChildren()) 1379 { 1380 blocks_added += ParseFunctionBlocks (sc, 1381 block, 1382 dwarf_cu, 1383 die->GetFirstChild(), 1384 subprogram_low_pc, 1385 depth + 1); 1386 } 1387 } 1388 } 1389 break; 1390 default: 1391 break; 1392 } 1393 1394 // Only parse siblings of the block if we are not at depth zero. A depth 1395 // of zero indicates we are currently parsing the top level 1396 // DW_TAG_subprogram DIE 1397 1398 if (depth == 0) 1399 die = NULL; 1400 else 1401 die = die->GetSibling(); 1402 } 1403 return blocks_added; 1404} 1405 1406bool 1407SymbolFileDWARF::ParseTemplateDIE (DWARFCompileUnit* dwarf_cu, 1408 const DWARFDebugInfoEntry *die, 1409 ClangASTContext::TemplateParameterInfos &template_param_infos) 1410{ 1411 const dw_tag_t tag = die->Tag(); 1412 1413 switch (tag) 1414 { 1415 case DW_TAG_template_type_parameter: 1416 case DW_TAG_template_value_parameter: 1417 { 1418 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); 1419 1420 DWARFDebugInfoEntry::Attributes attributes; 1421 const size_t num_attributes = die->GetAttributes (this, 1422 dwarf_cu, 1423 fixed_form_sizes, 1424 attributes); 1425 const char *name = NULL; 1426 Type *lldb_type = NULL; 1427 ClangASTType clang_type; 1428 uint64_t uval64 = 0; 1429 bool uval64_valid = false; 1430 if (num_attributes > 0) 1431 { 1432 DWARFFormValue form_value; 1433 for (size_t i=0; i<num_attributes; ++i) 1434 { 1435 const dw_attr_t attr = attributes.AttributeAtIndex(i); 1436 1437 switch (attr) 1438 { 1439 case DW_AT_name: 1440 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1441 name = form_value.AsCString(&get_debug_str_data()); 1442 break; 1443 1444 case DW_AT_type: 1445 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1446 { 1447 const dw_offset_t type_die_offset = form_value.Reference(dwarf_cu); 1448 lldb_type = ResolveTypeUID(type_die_offset); 1449 if (lldb_type) 1450 clang_type = lldb_type->GetClangForwardType(); 1451 } 1452 break; 1453 1454 case DW_AT_const_value: 1455 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1456 { 1457 uval64_valid = true; 1458 uval64 = form_value.Unsigned(); 1459 } 1460 break; 1461 default: 1462 break; 1463 } 1464 } 1465 1466 clang::ASTContext *ast = GetClangASTContext().getASTContext(); 1467 if (!clang_type) 1468 clang_type = GetClangASTContext().GetBasicType(eBasicTypeVoid); 1469 1470 if (clang_type) 1471 { 1472 bool is_signed = false; 1473 if (name && name[0]) 1474 template_param_infos.names.push_back(name); 1475 else 1476 template_param_infos.names.push_back(NULL); 1477 1478 if (tag == DW_TAG_template_value_parameter && 1479 lldb_type != NULL && 1480 clang_type.IsIntegerType (is_signed) && 1481 uval64_valid) 1482 { 1483 llvm::APInt apint (lldb_type->GetByteSize() * 8, uval64, is_signed); 1484 template_param_infos.args.push_back (clang::TemplateArgument (*ast, 1485 llvm::APSInt(apint), 1486 clang_type.GetQualType())); 1487 } 1488 else 1489 { 1490 template_param_infos.args.push_back (clang::TemplateArgument (clang_type.GetQualType())); 1491 } 1492 } 1493 else 1494 { 1495 return false; 1496 } 1497 1498 } 1499 } 1500 return true; 1501 1502 default: 1503 break; 1504 } 1505 return false; 1506} 1507 1508bool 1509SymbolFileDWARF::ParseTemplateParameterInfos (DWARFCompileUnit* dwarf_cu, 1510 const DWARFDebugInfoEntry *parent_die, 1511 ClangASTContext::TemplateParameterInfos &template_param_infos) 1512{ 1513 1514 if (parent_die == NULL) 1515 return false; 1516 1517 Args template_parameter_names; 1518 for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild(); 1519 die != NULL; 1520 die = die->GetSibling()) 1521 { 1522 const dw_tag_t tag = die->Tag(); 1523 1524 switch (tag) 1525 { 1526 case DW_TAG_template_type_parameter: 1527 case DW_TAG_template_value_parameter: 1528 ParseTemplateDIE (dwarf_cu, die, template_param_infos); 1529 break; 1530 1531 default: 1532 break; 1533 } 1534 } 1535 if (template_param_infos.args.empty()) 1536 return false; 1537 return template_param_infos.args.size() == template_param_infos.names.size(); 1538} 1539 1540clang::ClassTemplateDecl * 1541SymbolFileDWARF::ParseClassTemplateDecl (clang::DeclContext *decl_ctx, 1542 lldb::AccessType access_type, 1543 const char *parent_name, 1544 int tag_decl_kind, 1545 const ClangASTContext::TemplateParameterInfos &template_param_infos) 1546{ 1547 if (template_param_infos.IsValid()) 1548 { 1549 std::string template_basename(parent_name); 1550 template_basename.erase (template_basename.find('<')); 1551 ClangASTContext &ast = GetClangASTContext(); 1552 1553 return ast.CreateClassTemplateDecl (decl_ctx, 1554 access_type, 1555 template_basename.c_str(), 1556 tag_decl_kind, 1557 template_param_infos); 1558 } 1559 return NULL; 1560} 1561 1562class SymbolFileDWARF::DelayedAddObjCClassProperty 1563{ 1564public: 1565 DelayedAddObjCClassProperty 1566 ( 1567 const ClangASTType &class_opaque_type, 1568 const char *property_name, 1569 const ClangASTType &property_opaque_type, // The property type is only required if you don't have an ivar decl 1570 clang::ObjCIvarDecl *ivar_decl, 1571 const char *property_setter_name, 1572 const char *property_getter_name, 1573 uint32_t property_attributes, 1574 const ClangASTMetadata *metadata 1575 ) : 1576 m_class_opaque_type (class_opaque_type), 1577 m_property_name (property_name), 1578 m_property_opaque_type (property_opaque_type), 1579 m_ivar_decl (ivar_decl), 1580 m_property_setter_name (property_setter_name), 1581 m_property_getter_name (property_getter_name), 1582 m_property_attributes (property_attributes) 1583 { 1584 if (metadata != NULL) 1585 { 1586 m_metadata_ap.reset(new ClangASTMetadata()); 1587 *m_metadata_ap = *metadata; 1588 } 1589 } 1590 1591 DelayedAddObjCClassProperty (const DelayedAddObjCClassProperty &rhs) 1592 { 1593 *this = rhs; 1594 } 1595 1596 DelayedAddObjCClassProperty& operator= (const DelayedAddObjCClassProperty &rhs) 1597 { 1598 m_class_opaque_type = rhs.m_class_opaque_type; 1599 m_property_name = rhs.m_property_name; 1600 m_property_opaque_type = rhs.m_property_opaque_type; 1601 m_ivar_decl = rhs.m_ivar_decl; 1602 m_property_setter_name = rhs.m_property_setter_name; 1603 m_property_getter_name = rhs.m_property_getter_name; 1604 m_property_attributes = rhs.m_property_attributes; 1605 1606 if (rhs.m_metadata_ap.get()) 1607 { 1608 m_metadata_ap.reset (new ClangASTMetadata()); 1609 *m_metadata_ap = *rhs.m_metadata_ap; 1610 } 1611 return *this; 1612 } 1613 1614 bool 1615 Finalize() 1616 { 1617 return m_class_opaque_type.AddObjCClassProperty (m_property_name, 1618 m_property_opaque_type, 1619 m_ivar_decl, 1620 m_property_setter_name, 1621 m_property_getter_name, 1622 m_property_attributes, 1623 m_metadata_ap.get()); 1624 } 1625private: 1626 ClangASTType m_class_opaque_type; 1627 const char *m_property_name; 1628 ClangASTType m_property_opaque_type; 1629 clang::ObjCIvarDecl *m_ivar_decl; 1630 const char *m_property_setter_name; 1631 const char *m_property_getter_name; 1632 uint32_t m_property_attributes; 1633 std::unique_ptr<ClangASTMetadata> m_metadata_ap; 1634}; 1635 1636struct BitfieldInfo 1637{ 1638 uint64_t bit_size; 1639 uint64_t bit_offset; 1640 1641 BitfieldInfo () : 1642 bit_size (LLDB_INVALID_ADDRESS), 1643 bit_offset (LLDB_INVALID_ADDRESS) 1644 { 1645 } 1646 1647 void 1648 Clear() 1649 { 1650 bit_size = LLDB_INVALID_ADDRESS; 1651 bit_offset = LLDB_INVALID_ADDRESS; 1652 } 1653 1654 bool IsValid () 1655 { 1656 return (bit_size != LLDB_INVALID_ADDRESS) && 1657 (bit_offset != LLDB_INVALID_ADDRESS); 1658 } 1659}; 1660 1661 1662bool 1663SymbolFileDWARF::ClassOrStructIsVirtual (DWARFCompileUnit* dwarf_cu, 1664 const DWARFDebugInfoEntry *parent_die) 1665{ 1666 if (parent_die) 1667 { 1668 for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 1669 { 1670 dw_tag_t tag = die->Tag(); 1671 bool check_virtuality = false; 1672 switch (tag) 1673 { 1674 case DW_TAG_inheritance: 1675 case DW_TAG_subprogram: 1676 check_virtuality = true; 1677 break; 1678 default: 1679 break; 1680 } 1681 if (check_virtuality) 1682 { 1683 if (die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_virtuality, 0) != 0) 1684 return true; 1685 } 1686 } 1687 } 1688 return false; 1689} 1690 1691size_t 1692SymbolFileDWARF::ParseChildMembers 1693( 1694 const SymbolContext& sc, 1695 DWARFCompileUnit* dwarf_cu, 1696 const DWARFDebugInfoEntry *parent_die, 1697 ClangASTType &class_clang_type, 1698 const LanguageType class_language, 1699 std::vector<clang::CXXBaseSpecifier *>& base_classes, 1700 std::vector<int>& member_accessibilities, 1701 DWARFDIECollection& member_function_dies, 1702 DelayedPropertyList& delayed_properties, 1703 AccessType& default_accessibility, 1704 bool &is_a_class, 1705 LayoutInfo &layout_info 1706) 1707{ 1708 if (parent_die == NULL) 1709 return 0; 1710 1711 size_t count = 0; 1712 const DWARFDebugInfoEntry *die; 1713 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); 1714 uint32_t member_idx = 0; 1715 BitfieldInfo last_field_info; 1716 ModuleSP module = GetObjectFile()->GetModule(); 1717 1718 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 1719 { 1720 dw_tag_t tag = die->Tag(); 1721 1722 switch (tag) 1723 { 1724 case DW_TAG_member: 1725 case DW_TAG_APPLE_property: 1726 { 1727 DWARFDebugInfoEntry::Attributes attributes; 1728 const size_t num_attributes = die->GetAttributes (this, 1729 dwarf_cu, 1730 fixed_form_sizes, 1731 attributes); 1732 if (num_attributes > 0) 1733 { 1734 Declaration decl; 1735 //DWARFExpression location; 1736 const char *name = NULL; 1737 const char *prop_name = NULL; 1738 const char *prop_getter_name = NULL; 1739 const char *prop_setter_name = NULL; 1740 uint32_t prop_attributes = 0; 1741 1742 1743 bool is_artificial = false; 1744 lldb::user_id_t encoding_uid = LLDB_INVALID_UID; 1745 AccessType accessibility = eAccessNone; 1746 uint32_t member_byte_offset = UINT32_MAX; 1747 size_t byte_size = 0; 1748 size_t bit_offset = 0; 1749 size_t bit_size = 0; 1750 bool is_external = false; // On DW_TAG_members, this means the member is static 1751 uint32_t i; 1752 for (i=0; i<num_attributes && !is_artificial; ++i) 1753 { 1754 const dw_attr_t attr = attributes.AttributeAtIndex(i); 1755 DWARFFormValue form_value; 1756 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 1757 { 1758 switch (attr) 1759 { 1760 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 1761 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 1762 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 1763 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; 1764 case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break; 1765 case DW_AT_bit_offset: bit_offset = form_value.Unsigned(); break; 1766 case DW_AT_bit_size: bit_size = form_value.Unsigned(); break; 1767 case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; 1768 case DW_AT_data_member_location: 1769 if (form_value.BlockData()) 1770 { 1771 Value initialValue(0); 1772 Value memberOffset(0); 1773 const DWARFDataExtractor& debug_info_data = get_debug_info_data(); 1774 uint32_t block_length = form_value.Unsigned(); 1775 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 1776 if (DWARFExpression::Evaluate(NULL, // ExecutionContext * 1777 NULL, // ClangExpressionVariableList * 1778 NULL, // ClangExpressionDeclMap * 1779 NULL, // RegisterContext * 1780 module, 1781 debug_info_data, 1782 block_offset, 1783 block_length, 1784 eRegisterKindDWARF, 1785 &initialValue, 1786 memberOffset, 1787 NULL)) 1788 { 1789 member_byte_offset = memberOffset.ResolveValue(NULL).UInt(); 1790 } 1791 } 1792 else 1793 { 1794 // With DWARF 3 and later, if the value is an integer constant, 1795 // this form value is the offset in bytes from the beginning 1796 // of the containing entity. 1797 member_byte_offset = form_value.Unsigned(); 1798 } 1799 break; 1800 1801 case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType (form_value.Unsigned()); break; 1802 case DW_AT_artificial: is_artificial = form_value.Boolean(); break; 1803 case DW_AT_APPLE_property_name: prop_name = form_value.AsCString(&get_debug_str_data()); break; 1804 case DW_AT_APPLE_property_getter: prop_getter_name = form_value.AsCString(&get_debug_str_data()); break; 1805 case DW_AT_APPLE_property_setter: prop_setter_name = form_value.AsCString(&get_debug_str_data()); break; 1806 case DW_AT_APPLE_property_attribute: prop_attributes = form_value.Unsigned(); break; 1807 case DW_AT_external: is_external = form_value.Boolean(); break; 1808 1809 default: 1810 case DW_AT_declaration: 1811 case DW_AT_description: 1812 case DW_AT_mutable: 1813 case DW_AT_visibility: 1814 case DW_AT_sibling: 1815 break; 1816 } 1817 } 1818 } 1819 1820 if (prop_name) 1821 { 1822 ConstString fixed_getter; 1823 ConstString fixed_setter; 1824 1825 // Check if the property getter/setter were provided as full 1826 // names. We want basenames, so we extract them. 1827 1828 if (prop_getter_name && prop_getter_name[0] == '-') 1829 { 1830 ObjCLanguageRuntime::MethodName prop_getter_method(prop_getter_name, true); 1831 prop_getter_name = prop_getter_method.GetSelector().GetCString(); 1832 } 1833 1834 if (prop_setter_name && prop_setter_name[0] == '-') 1835 { 1836 ObjCLanguageRuntime::MethodName prop_setter_method(prop_setter_name, true); 1837 prop_setter_name = prop_setter_method.GetSelector().GetCString(); 1838 } 1839 1840 // If the names haven't been provided, they need to be 1841 // filled in. 1842 1843 if (!prop_getter_name) 1844 { 1845 prop_getter_name = prop_name; 1846 } 1847 if (!prop_setter_name && prop_name[0] && !(prop_attributes & DW_APPLE_PROPERTY_readonly)) 1848 { 1849 StreamString ss; 1850 1851 ss.Printf("set%c%s:", 1852 toupper(prop_name[0]), 1853 &prop_name[1]); 1854 1855 fixed_setter.SetCString(ss.GetData()); 1856 prop_setter_name = fixed_setter.GetCString(); 1857 } 1858 } 1859 1860 // Clang has a DWARF generation bug where sometimes it 1861 // represents fields that are references with bad byte size 1862 // and bit size/offset information such as: 1863 // 1864 // DW_AT_byte_size( 0x00 ) 1865 // DW_AT_bit_size( 0x40 ) 1866 // DW_AT_bit_offset( 0xffffffffffffffc0 ) 1867 // 1868 // So check the bit offset to make sure it is sane, and if 1869 // the values are not sane, remove them. If we don't do this 1870 // then we will end up with a crash if we try to use this 1871 // type in an expression when clang becomes unhappy with its 1872 // recycled debug info. 1873 1874 if (bit_offset > 128) 1875 { 1876 bit_size = 0; 1877 bit_offset = 0; 1878 } 1879 1880 // FIXME: Make Clang ignore Objective-C accessibility for expressions 1881 if (class_language == eLanguageTypeObjC || 1882 class_language == eLanguageTypeObjC_plus_plus) 1883 accessibility = eAccessNone; 1884 1885 if (member_idx == 0 && !is_artificial && name && (strstr (name, "_vptr$") == name)) 1886 { 1887 // Not all compilers will mark the vtable pointer 1888 // member as artificial (llvm-gcc). We can't have 1889 // the virtual members in our classes otherwise it 1890 // throws off all child offsets since we end up 1891 // having and extra pointer sized member in our 1892 // class layouts. 1893 is_artificial = true; 1894 } 1895 1896 // Handle static members 1897 if (is_external && member_byte_offset == UINT32_MAX) 1898 { 1899 Type *var_type = ResolveTypeUID(encoding_uid); 1900 1901 if (var_type) 1902 { 1903 if (accessibility == eAccessNone) 1904 accessibility = eAccessPublic; 1905 class_clang_type.AddVariableToRecordType (name, 1906 var_type->GetClangLayoutType(), 1907 accessibility); 1908 } 1909 break; 1910 } 1911 1912 if (is_artificial == false) 1913 { 1914 Type *member_type = ResolveTypeUID(encoding_uid); 1915 1916 clang::FieldDecl *field_decl = NULL; 1917 if (tag == DW_TAG_member) 1918 { 1919 if (member_type) 1920 { 1921 if (accessibility == eAccessNone) 1922 accessibility = default_accessibility; 1923 member_accessibilities.push_back(accessibility); 1924 1925 uint64_t field_bit_offset = (member_byte_offset == UINT32_MAX ? 0 : (member_byte_offset * 8)); 1926 if (bit_size > 0) 1927 { 1928 1929 BitfieldInfo this_field_info; 1930 this_field_info.bit_offset = field_bit_offset; 1931 this_field_info.bit_size = bit_size; 1932 1933 ///////////////////////////////////////////////////////////// 1934 // How to locate a field given the DWARF debug information 1935 // 1936 // AT_byte_size indicates the size of the word in which the 1937 // bit offset must be interpreted. 1938 // 1939 // AT_data_member_location indicates the byte offset of the 1940 // word from the base address of the structure. 1941 // 1942 // AT_bit_offset indicates how many bits into the word 1943 // (according to the host endianness) the low-order bit of 1944 // the field starts. AT_bit_offset can be negative. 1945 // 1946 // AT_bit_size indicates the size of the field in bits. 1947 ///////////////////////////////////////////////////////////// 1948 1949 if (byte_size == 0) 1950 byte_size = member_type->GetByteSize(); 1951 1952 if (GetObjectFile()->GetByteOrder() == eByteOrderLittle) 1953 { 1954 this_field_info.bit_offset += byte_size * 8; 1955 this_field_info.bit_offset -= (bit_offset + bit_size); 1956 } 1957 else 1958 { 1959 this_field_info.bit_offset += bit_offset; 1960 } 1961 1962 // Update the field bit offset we will report for layout 1963 field_bit_offset = this_field_info.bit_offset; 1964 1965 // If the member to be emitted did not start on a character boundary and there is 1966 // empty space between the last field and this one, then we need to emit an 1967 // anonymous member filling up the space up to its start. There are three cases 1968 // here: 1969 // 1970 // 1 If the previous member ended on a character boundary, then we can emit an 1971 // anonymous member starting at the most recent character boundary. 1972 // 1973 // 2 If the previous member did not end on a character boundary and the distance 1974 // from the end of the previous member to the current member is less than a 1975 // word width, then we can emit an anonymous member starting right after the 1976 // previous member and right before this member. 1977 // 1978 // 3 If the previous member did not end on a character boundary and the distance 1979 // from the end of the previous member to the current member is greater than 1980 // or equal a word width, then we act as in Case 1. 1981 1982 const uint64_t character_width = 8; 1983 const uint64_t word_width = 32; 1984 1985 // Objective-C has invalid DW_AT_bit_offset values in older versions 1986 // of clang, so we have to be careful and only insert unnammed bitfields 1987 // if we have a new enough clang. 1988 bool detect_unnamed_bitfields = true; 1989 1990 if (class_language == eLanguageTypeObjC || class_language == eLanguageTypeObjC_plus_plus) 1991 detect_unnamed_bitfields = dwarf_cu->Supports_unnamed_objc_bitfields (); 1992 1993 if (detect_unnamed_bitfields) 1994 { 1995 BitfieldInfo anon_field_info; 1996 1997 if ((this_field_info.bit_offset % character_width) != 0) // not char aligned 1998 { 1999 uint64_t last_field_end = 0; 2000 2001 if (last_field_info.IsValid()) 2002 last_field_end = last_field_info.bit_offset + last_field_info.bit_size; 2003 2004 if (this_field_info.bit_offset != last_field_end) 2005 { 2006 if (((last_field_end % character_width) == 0) || // case 1 2007 (this_field_info.bit_offset - last_field_end >= word_width)) // case 3 2008 { 2009 anon_field_info.bit_size = this_field_info.bit_offset % character_width; 2010 anon_field_info.bit_offset = this_field_info.bit_offset - anon_field_info.bit_size; 2011 } 2012 else // case 2 2013 { 2014 anon_field_info.bit_size = this_field_info.bit_offset - last_field_end; 2015 anon_field_info.bit_offset = last_field_end; 2016 } 2017 } 2018 } 2019 2020 if (anon_field_info.IsValid()) 2021 { 2022 clang::FieldDecl *unnamed_bitfield_decl = class_clang_type.AddFieldToRecordType (NULL, 2023 GetClangASTContext().GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, word_width), 2024 accessibility, 2025 anon_field_info.bit_size); 2026 2027 layout_info.field_offsets.insert(std::make_pair(unnamed_bitfield_decl, anon_field_info.bit_offset)); 2028 } 2029 } 2030 last_field_info = this_field_info; 2031 } 2032 else 2033 { 2034 last_field_info.Clear(); 2035 } 2036 2037 ClangASTType member_clang_type = member_type->GetClangLayoutType(); 2038 2039 { 2040 // Older versions of clang emit array[0] and array[1] in the same way (<rdar://problem/12566646>). 2041 // If the current field is at the end of the structure, then there is definitely no room for extra 2042 // elements and we override the type to array[0]. 2043 2044 ClangASTType member_array_element_type; 2045 uint64_t member_array_size; 2046 bool member_array_is_incomplete; 2047 2048 if (member_clang_type.IsArrayType(&member_array_element_type, 2049 &member_array_size, 2050 &member_array_is_incomplete) && 2051 !member_array_is_incomplete) 2052 { 2053 uint64_t parent_byte_size = parent_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, UINT64_MAX); 2054 2055 if (member_byte_offset >= parent_byte_size) 2056 { 2057 if (member_array_size != 1) 2058 { 2059 GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 " which extends beyond the bounds of 0x%8.8" PRIx64, 2060 MakeUserID(die->GetOffset()), 2061 name, 2062 encoding_uid, 2063 MakeUserID(parent_die->GetOffset())); 2064 } 2065 2066 member_clang_type = GetClangASTContext().CreateArrayType(member_array_element_type, 0, false); 2067 } 2068 } 2069 } 2070 2071 field_decl = class_clang_type.AddFieldToRecordType (name, 2072 member_clang_type, 2073 accessibility, 2074 bit_size); 2075 2076 GetClangASTContext().SetMetadataAsUserID (field_decl, MakeUserID(die->GetOffset())); 2077 2078 layout_info.field_offsets.insert(std::make_pair(field_decl, field_bit_offset)); 2079 2080 } 2081 else 2082 { 2083 if (name) 2084 GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 " which was unable to be parsed", 2085 MakeUserID(die->GetOffset()), 2086 name, 2087 encoding_uid); 2088 else 2089 GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member refers to type 0x%8.8" PRIx64 " which was unable to be parsed", 2090 MakeUserID(die->GetOffset()), 2091 encoding_uid); 2092 } 2093 } 2094 2095 if (prop_name != NULL) 2096 { 2097 clang::ObjCIvarDecl *ivar_decl = NULL; 2098 2099 if (field_decl) 2100 { 2101 ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl); 2102 assert (ivar_decl != NULL); 2103 } 2104 2105 ClangASTMetadata metadata; 2106 metadata.SetUserID (MakeUserID(die->GetOffset())); 2107 delayed_properties.push_back(DelayedAddObjCClassProperty(class_clang_type, 2108 prop_name, 2109 member_type->GetClangLayoutType(), 2110 ivar_decl, 2111 prop_setter_name, 2112 prop_getter_name, 2113 prop_attributes, 2114 &metadata)); 2115 2116 if (ivar_decl) 2117 GetClangASTContext().SetMetadataAsUserID (ivar_decl, MakeUserID(die->GetOffset())); 2118 } 2119 } 2120 } 2121 ++member_idx; 2122 } 2123 break; 2124 2125 case DW_TAG_subprogram: 2126 // Let the type parsing code handle this one for us. 2127 member_function_dies.Append (die); 2128 break; 2129 2130 case DW_TAG_inheritance: 2131 { 2132 is_a_class = true; 2133 if (default_accessibility == eAccessNone) 2134 default_accessibility = eAccessPrivate; 2135 // TODO: implement DW_TAG_inheritance type parsing 2136 DWARFDebugInfoEntry::Attributes attributes; 2137 const size_t num_attributes = die->GetAttributes (this, 2138 dwarf_cu, 2139 fixed_form_sizes, 2140 attributes); 2141 if (num_attributes > 0) 2142 { 2143 Declaration decl; 2144 DWARFExpression location; 2145 lldb::user_id_t encoding_uid = LLDB_INVALID_UID; 2146 AccessType accessibility = default_accessibility; 2147 bool is_virtual = false; 2148 bool is_base_of_class = true; 2149 off_t member_byte_offset = 0; 2150 uint32_t i; 2151 for (i=0; i<num_attributes; ++i) 2152 { 2153 const dw_attr_t attr = attributes.AttributeAtIndex(i); 2154 DWARFFormValue form_value; 2155 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 2156 { 2157 switch (attr) 2158 { 2159 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 2160 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 2161 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 2162 case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break; 2163 case DW_AT_data_member_location: 2164 if (form_value.BlockData()) 2165 { 2166 Value initialValue(0); 2167 Value memberOffset(0); 2168 const DWARFDataExtractor& debug_info_data = get_debug_info_data(); 2169 uint32_t block_length = form_value.Unsigned(); 2170 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 2171 if (DWARFExpression::Evaluate (NULL, 2172 NULL, 2173 NULL, 2174 NULL, 2175 module, 2176 debug_info_data, 2177 block_offset, 2178 block_length, 2179 eRegisterKindDWARF, 2180 &initialValue, 2181 memberOffset, 2182 NULL)) 2183 { 2184 member_byte_offset = memberOffset.ResolveValue(NULL).UInt(); 2185 } 2186 } 2187 else 2188 { 2189 // With DWARF 3 and later, if the value is an integer constant, 2190 // this form value is the offset in bytes from the beginning 2191 // of the containing entity. 2192 member_byte_offset = form_value.Unsigned(); 2193 } 2194 break; 2195 2196 case DW_AT_accessibility: 2197 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); 2198 break; 2199 2200 case DW_AT_virtuality: 2201 is_virtual = form_value.Boolean(); 2202 break; 2203 2204 case DW_AT_sibling: 2205 break; 2206 2207 default: 2208 break; 2209 } 2210 } 2211 } 2212 2213 Type *base_class_type = ResolveTypeUID(encoding_uid); 2214 assert(base_class_type); 2215 2216 ClangASTType base_class_clang_type = base_class_type->GetClangFullType(); 2217 assert (base_class_clang_type); 2218 if (class_language == eLanguageTypeObjC) 2219 { 2220 class_clang_type.SetObjCSuperClass(base_class_clang_type); 2221 } 2222 else 2223 { 2224 base_classes.push_back (base_class_clang_type.CreateBaseClassSpecifier (accessibility, 2225 is_virtual, 2226 is_base_of_class)); 2227 2228 if (is_virtual) 2229 { 2230 // Do not specify any offset for virtual inheritance. The DWARF produced by clang doesn't 2231 // give us a constant offset, but gives us a DWARF expressions that requires an actual object 2232 // in memory. the DW_AT_data_member_location for a virtual base class looks like: 2233 // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref, DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref, DW_OP_plus ) 2234 // Given this, there is really no valid response we can give to clang for virtual base 2235 // class offsets, and this should eventually be removed from LayoutRecordType() in the external 2236 // AST source in clang. 2237 } 2238 else 2239 { 2240 layout_info.base_offsets.insert(std::make_pair(base_class_clang_type.GetAsCXXRecordDecl(), 2241 clang::CharUnits::fromQuantity(member_byte_offset))); 2242 } 2243 } 2244 } 2245 } 2246 break; 2247 2248 default: 2249 break; 2250 } 2251 } 2252 2253 return count; 2254} 2255 2256 2257clang::DeclContext* 2258SymbolFileDWARF::GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid) 2259{ 2260 DWARFDebugInfo* debug_info = DebugInfo(); 2261 if (debug_info && UserIDMatches(type_uid)) 2262 { 2263 DWARFCompileUnitSP cu_sp; 2264 const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(type_uid, &cu_sp); 2265 if (die) 2266 return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL); 2267 } 2268 return NULL; 2269} 2270 2271clang::DeclContext* 2272SymbolFileDWARF::GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid) 2273{ 2274 if (UserIDMatches(type_uid)) 2275 return GetClangDeclContextForDIEOffset (sc, type_uid); 2276 return NULL; 2277} 2278 2279Type* 2280SymbolFileDWARF::ResolveTypeUID (lldb::user_id_t type_uid) 2281{ 2282 if (UserIDMatches(type_uid)) 2283 { 2284 DWARFDebugInfo* debug_info = DebugInfo(); 2285 if (debug_info) 2286 { 2287 DWARFCompileUnitSP cu_sp; 2288 const DWARFDebugInfoEntry* type_die = debug_info->GetDIEPtr(type_uid, &cu_sp); 2289 const bool assert_not_being_parsed = true; 2290 return ResolveTypeUID (cu_sp.get(), type_die, assert_not_being_parsed); 2291 } 2292 } 2293 return NULL; 2294} 2295 2296Type* 2297SymbolFileDWARF::ResolveTypeUID (DWARFCompileUnit* cu, const DWARFDebugInfoEntry* die, bool assert_not_being_parsed) 2298{ 2299 if (die != NULL) 2300 { 2301 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 2302 if (log) 2303 GetObjectFile()->GetModule()->LogMessage (log, 2304 "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s'", 2305 die->GetOffset(), 2306 DW_TAG_value_to_name(die->Tag()), 2307 die->GetName(this, cu)); 2308 2309 // We might be coming in in the middle of a type tree (a class 2310 // withing a class, an enum within a class), so parse any needed 2311 // parent DIEs before we get to this one... 2312 const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die); 2313 switch (decl_ctx_die->Tag()) 2314 { 2315 case DW_TAG_structure_type: 2316 case DW_TAG_union_type: 2317 case DW_TAG_class_type: 2318 { 2319 // Get the type, which could be a forward declaration 2320 if (log) 2321 GetObjectFile()->GetModule()->LogMessage (log, 2322 "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent forward type for 0x%8.8x", 2323 die->GetOffset(), 2324 DW_TAG_value_to_name(die->Tag()), 2325 die->GetName(this, cu), 2326 decl_ctx_die->GetOffset()); 2327// 2328// Type *parent_type = ResolveTypeUID (cu, decl_ctx_die, assert_not_being_parsed); 2329// if (child_requires_parent_class_union_or_struct_to_be_completed(die->Tag())) 2330// { 2331// if (log) 2332// GetObjectFile()->GetModule()->LogMessage (log, 2333// "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent full type for 0x%8.8x since die is a function", 2334// die->GetOffset(), 2335// DW_TAG_value_to_name(die->Tag()), 2336// die->GetName(this, cu), 2337// decl_ctx_die->GetOffset()); 2338// // Ask the type to complete itself if it already hasn't since if we 2339// // want a function (method or static) from a class, the class must 2340// // create itself and add it's own methods and class functions. 2341// if (parent_type) 2342// parent_type->GetClangFullType(); 2343// } 2344 } 2345 break; 2346 2347 default: 2348 break; 2349 } 2350 return ResolveType (cu, die); 2351 } 2352 return NULL; 2353} 2354 2355// This function is used when SymbolFileDWARFDebugMap owns a bunch of 2356// SymbolFileDWARF objects to detect if this DWARF file is the one that 2357// can resolve a clang_type. 2358bool 2359SymbolFileDWARF::HasForwardDeclForClangType (const ClangASTType &clang_type) 2360{ 2361 ClangASTType clang_type_no_qualifiers = clang_type.RemoveFastQualifiers(); 2362 const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers.GetOpaqueQualType()); 2363 return die != NULL; 2364} 2365 2366 2367bool 2368SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (ClangASTType &clang_type) 2369{ 2370 // We have a struct/union/class/enum that needs to be fully resolved. 2371 ClangASTType clang_type_no_qualifiers = clang_type.RemoveFastQualifiers(); 2372 const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers.GetOpaqueQualType()); 2373 if (die == NULL) 2374 { 2375 // We have already resolved this type... 2376 return true; 2377 } 2378 // Once we start resolving this type, remove it from the forward declaration 2379 // map in case anyone child members or other types require this type to get resolved. 2380 // The type will get resolved when all of the calls to SymbolFileDWARF::ResolveClangOpaqueTypeDefinition 2381 // are done. 2382 m_forward_decl_clang_type_to_die.erase (clang_type_no_qualifiers.GetOpaqueQualType()); 2383 2384 2385 // Disable external storage for this type so we don't get anymore 2386 // clang::ExternalASTSource queries for this type. 2387 clang_type.SetHasExternalStorage (false); 2388 2389 DWARFDebugInfo* debug_info = DebugInfo(); 2390 2391 DWARFCompileUnit *dwarf_cu = debug_info->GetCompileUnitContainingDIE (die->GetOffset()).get(); 2392 Type *type = m_die_to_type.lookup (die); 2393 2394 const dw_tag_t tag = die->Tag(); 2395 2396 Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION)); 2397 if (log) 2398 { 2399 GetObjectFile()->GetModule()->LogMessageVerboseBacktrace (log, 2400 "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...", 2401 MakeUserID(die->GetOffset()), 2402 DW_TAG_value_to_name(tag), 2403 type->GetName().AsCString()); 2404 2405 } 2406 assert (clang_type); 2407 DWARFDebugInfoEntry::Attributes attributes; 2408 2409 switch (tag) 2410 { 2411 case DW_TAG_structure_type: 2412 case DW_TAG_union_type: 2413 case DW_TAG_class_type: 2414 { 2415 LayoutInfo layout_info; 2416 2417 { 2418 if (die->HasChildren()) 2419 { 2420 2421 LanguageType class_language = eLanguageTypeUnknown; 2422 if (clang_type.IsObjCObjectOrInterfaceType()) 2423 { 2424 class_language = eLanguageTypeObjC; 2425 // For objective C we don't start the definition when 2426 // the class is created. 2427 clang_type.StartTagDeclarationDefinition (); 2428 } 2429 2430 int tag_decl_kind = -1; 2431 AccessType default_accessibility = eAccessNone; 2432 if (tag == DW_TAG_structure_type) 2433 { 2434 tag_decl_kind = clang::TTK_Struct; 2435 default_accessibility = eAccessPublic; 2436 } 2437 else if (tag == DW_TAG_union_type) 2438 { 2439 tag_decl_kind = clang::TTK_Union; 2440 default_accessibility = eAccessPublic; 2441 } 2442 else if (tag == DW_TAG_class_type) 2443 { 2444 tag_decl_kind = clang::TTK_Class; 2445 default_accessibility = eAccessPrivate; 2446 } 2447 2448 SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu)); 2449 std::vector<clang::CXXBaseSpecifier *> base_classes; 2450 std::vector<int> member_accessibilities; 2451 bool is_a_class = false; 2452 // Parse members and base classes first 2453 DWARFDIECollection member_function_dies; 2454 2455 DelayedPropertyList delayed_properties; 2456 ParseChildMembers (sc, 2457 dwarf_cu, 2458 die, 2459 clang_type, 2460 class_language, 2461 base_classes, 2462 member_accessibilities, 2463 member_function_dies, 2464 delayed_properties, 2465 default_accessibility, 2466 is_a_class, 2467 layout_info); 2468 2469 // Now parse any methods if there were any... 2470 size_t num_functions = member_function_dies.Size(); 2471 if (num_functions > 0) 2472 { 2473 for (size_t i=0; i<num_functions; ++i) 2474 { 2475 ResolveType(dwarf_cu, member_function_dies.GetDIEPtrAtIndex(i)); 2476 } 2477 } 2478 2479 if (class_language == eLanguageTypeObjC) 2480 { 2481 ConstString class_name (clang_type.GetTypeName()); 2482 if (class_name) 2483 { 2484 2485 DIEArray method_die_offsets; 2486 if (m_using_apple_tables) 2487 { 2488 if (m_apple_objc_ap.get()) 2489 m_apple_objc_ap->FindByName(class_name.GetCString(), method_die_offsets); 2490 } 2491 else 2492 { 2493 if (!m_indexed) 2494 Index (); 2495 2496 m_objc_class_selectors_index.Find (class_name, method_die_offsets); 2497 } 2498 2499 if (!method_die_offsets.empty()) 2500 { 2501 DWARFDebugInfo* debug_info = DebugInfo(); 2502 2503 DWARFCompileUnit* method_cu = NULL; 2504 const size_t num_matches = method_die_offsets.size(); 2505 for (size_t i=0; i<num_matches; ++i) 2506 { 2507 const dw_offset_t die_offset = method_die_offsets[i]; 2508 DWARFDebugInfoEntry *method_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &method_cu); 2509 2510 if (method_die) 2511 ResolveType (method_cu, method_die); 2512 else 2513 { 2514 if (m_using_apple_tables) 2515 { 2516 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_objc accelerator table had bad die 0x%8.8x for '%s')\n", 2517 die_offset, class_name.GetCString()); 2518 } 2519 } 2520 } 2521 } 2522 2523 for (DelayedPropertyList::iterator pi = delayed_properties.begin(), pe = delayed_properties.end(); 2524 pi != pe; 2525 ++pi) 2526 pi->Finalize(); 2527 } 2528 } 2529 2530 // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we 2531 // need to tell the clang type it is actually a class. 2532 if (class_language != eLanguageTypeObjC) 2533 { 2534 if (is_a_class && tag_decl_kind != clang::TTK_Class) 2535 clang_type.SetTagTypeKind (clang::TTK_Class); 2536 } 2537 2538 // Since DW_TAG_structure_type gets used for both classes 2539 // and structures, we may need to set any DW_TAG_member 2540 // fields to have a "private" access if none was specified. 2541 // When we parsed the child members we tracked that actual 2542 // accessibility value for each DW_TAG_member in the 2543 // "member_accessibilities" array. If the value for the 2544 // member is zero, then it was set to the "default_accessibility" 2545 // which for structs was "public". Below we correct this 2546 // by setting any fields to "private" that weren't correctly 2547 // set. 2548 if (is_a_class && !member_accessibilities.empty()) 2549 { 2550 // This is a class and all members that didn't have 2551 // their access specified are private. 2552 clang_type.SetDefaultAccessForRecordFields (eAccessPrivate, 2553 &member_accessibilities.front(), 2554 member_accessibilities.size()); 2555 } 2556 2557 if (!base_classes.empty()) 2558 { 2559 // Make sure all base classes refer to complete types and not 2560 // forward declarations. If we don't do this, clang will crash 2561 // with an assertion in the call to clang_type.SetBaseClassesForClassType() 2562 bool base_class_error = false; 2563 for (auto &base_class : base_classes) 2564 { 2565 clang::TypeSourceInfo *type_source_info = base_class->getTypeSourceInfo(); 2566 if (type_source_info) 2567 { 2568 ClangASTType base_class_type (GetClangASTContext().getASTContext(), type_source_info->getType()); 2569 if (base_class_type.GetCompleteType() == false) 2570 { 2571 if (!base_class_error) 2572 { 2573 GetObjectFile()->GetModule()->ReportError ("DWARF DIE at 0x%8.8x for class '%s' has a base class '%s' that is a forward declaration, not a complete definition.\nPlease file a bug against the compiler and include the preprocessed output for %s", 2574 die->GetOffset(), 2575 die->GetName(this, dwarf_cu), 2576 base_class_type.GetTypeName().GetCString(), 2577 sc.comp_unit ? sc.comp_unit->GetPath().c_str() : "the source file"); 2578 } 2579 // We have no choice other than to pretend that the base class 2580 // is complete. If we don't do this, clang will crash when we 2581 // call setBases() inside of "clang_type.SetBaseClassesForClassType()" 2582 // below. Since we provide layout assistance, all ivars in this 2583 // class and other classe will be fine, this is the best we can do 2584 // short of crashing. 2585 base_class_type.StartTagDeclarationDefinition (); 2586 base_class_type.CompleteTagDeclarationDefinition (); 2587 } 2588 } 2589 } 2590 clang_type.SetBaseClassesForClassType (&base_classes.front(), 2591 base_classes.size()); 2592 2593 // Clang will copy each CXXBaseSpecifier in "base_classes" 2594 // so we have to free them all. 2595 ClangASTType::DeleteBaseClassSpecifiers (&base_classes.front(), 2596 base_classes.size()); 2597 } 2598 } 2599 } 2600 2601 clang_type.BuildIndirectFields (); 2602 clang_type.CompleteTagDeclarationDefinition (); 2603 2604 if (!layout_info.field_offsets.empty() || 2605 !layout_info.base_offsets.empty() || 2606 !layout_info.vbase_offsets.empty() ) 2607 { 2608 if (type) 2609 layout_info.bit_size = type->GetByteSize() * 8; 2610 if (layout_info.bit_size == 0) 2611 layout_info.bit_size = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, 0) * 8; 2612 2613 clang::CXXRecordDecl *record_decl = clang_type.GetAsCXXRecordDecl(); 2614 if (record_decl) 2615 { 2616 if (log) 2617 { 2618 GetObjectFile()->GetModule()->LogMessage (log, 2619 "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) caching layout info for record_decl = %p, bit_size = %" PRIu64 ", alignment = %" PRIu64 ", field_offsets[%u], base_offsets[%u], vbase_offsets[%u])", 2620 clang_type.GetOpaqueQualType(), 2621 record_decl, 2622 layout_info.bit_size, 2623 layout_info.alignment, 2624 (uint32_t)layout_info.field_offsets.size(), 2625 (uint32_t)layout_info.base_offsets.size(), 2626 (uint32_t)layout_info.vbase_offsets.size()); 2627 2628 uint32_t idx; 2629 { 2630 llvm::DenseMap <const clang::FieldDecl *, uint64_t>::const_iterator pos, end = layout_info.field_offsets.end(); 2631 for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; ++pos, ++idx) 2632 { 2633 GetObjectFile()->GetModule()->LogMessage (log, 2634 "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) field[%u] = { bit_offset=%u, name='%s' }", 2635 clang_type.GetOpaqueQualType(), 2636 idx, 2637 (uint32_t)pos->second, 2638 pos->first->getNameAsString().c_str()); 2639 } 2640 } 2641 2642 { 2643 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator base_pos, base_end = layout_info.base_offsets.end(); 2644 for (idx = 0, base_pos = layout_info.base_offsets.begin(); base_pos != base_end; ++base_pos, ++idx) 2645 { 2646 GetObjectFile()->GetModule()->LogMessage (log, 2647 "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) base[%u] = { byte_offset=%u, name='%s' }", 2648 clang_type.GetOpaqueQualType(), 2649 idx, 2650 (uint32_t)base_pos->second.getQuantity(), 2651 base_pos->first->getNameAsString().c_str()); 2652 } 2653 } 2654 { 2655 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator vbase_pos, vbase_end = layout_info.vbase_offsets.end(); 2656 for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); vbase_pos != vbase_end; ++vbase_pos, ++idx) 2657 { 2658 GetObjectFile()->GetModule()->LogMessage (log, 2659 "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) vbase[%u] = { byte_offset=%u, name='%s' }", 2660 clang_type.GetOpaqueQualType(), 2661 idx, 2662 (uint32_t)vbase_pos->second.getQuantity(), 2663 vbase_pos->first->getNameAsString().c_str()); 2664 } 2665 } 2666 } 2667 m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info)); 2668 } 2669 } 2670 } 2671 2672 return (bool)clang_type; 2673 2674 case DW_TAG_enumeration_type: 2675 clang_type.StartTagDeclarationDefinition (); 2676 if (die->HasChildren()) 2677 { 2678 SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu)); 2679 bool is_signed = false; 2680 clang_type.IsIntegerType(is_signed); 2681 ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), dwarf_cu, die); 2682 } 2683 clang_type.CompleteTagDeclarationDefinition (); 2684 return (bool)clang_type; 2685 2686 default: 2687 assert(false && "not a forward clang type decl!"); 2688 break; 2689 } 2690 return false; 2691} 2692 2693Type* 2694SymbolFileDWARF::ResolveType (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* type_die, bool assert_not_being_parsed) 2695{ 2696 if (type_die != NULL) 2697 { 2698 Type *type = m_die_to_type.lookup (type_die); 2699 2700 if (type == NULL) 2701 type = GetTypeForDIE (dwarf_cu, type_die).get(); 2702 2703 if (assert_not_being_parsed) 2704 { 2705 if (type != DIE_IS_BEING_PARSED) 2706 return type; 2707 2708 GetObjectFile()->GetModule()->ReportError ("Parsing a die that is being parsed die: 0x%8.8x: %s %s", 2709 type_die->GetOffset(), 2710 DW_TAG_value_to_name(type_die->Tag()), 2711 type_die->GetName(this, dwarf_cu)); 2712 2713 } 2714 else 2715 return type; 2716 } 2717 return NULL; 2718} 2719 2720CompileUnit* 2721SymbolFileDWARF::GetCompUnitForDWARFCompUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx) 2722{ 2723 // Check if the symbol vendor already knows about this compile unit? 2724 if (dwarf_cu->GetUserData() == NULL) 2725 { 2726 // The symbol vendor doesn't know about this compile unit, we 2727 // need to parse and add it to the symbol vendor object. 2728 return ParseCompileUnit(dwarf_cu, cu_idx).get(); 2729 } 2730 return (CompileUnit*)dwarf_cu->GetUserData(); 2731} 2732 2733bool 2734SymbolFileDWARF::GetFunction (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* func_die, SymbolContext& sc) 2735{ 2736 sc.Clear(false); 2737 // Check if the symbol vendor already knows about this compile unit? 2738 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 2739 2740 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(func_die->GetOffset())).get(); 2741 if (sc.function == NULL) 2742 sc.function = ParseCompileUnitFunction(sc, dwarf_cu, func_die); 2743 2744 if (sc.function) 2745 { 2746 sc.module_sp = sc.function->CalculateSymbolContextModule(); 2747 return true; 2748 } 2749 2750 return false; 2751} 2752 2753uint32_t 2754SymbolFileDWARF::ResolveSymbolContext (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc) 2755{ 2756 Timer scoped_timer(__PRETTY_FUNCTION__, 2757 "SymbolFileDWARF::ResolveSymbolContext (so_addr = { section = %p, offset = 0x%" PRIx64 " }, resolve_scope = 0x%8.8x)", 2758 so_addr.GetSection().get(), 2759 so_addr.GetOffset(), 2760 resolve_scope); 2761 uint32_t resolved = 0; 2762 if (resolve_scope & ( eSymbolContextCompUnit | 2763 eSymbolContextFunction | 2764 eSymbolContextBlock | 2765 eSymbolContextLineEntry)) 2766 { 2767 lldb::addr_t file_vm_addr = so_addr.GetFileAddress(); 2768 2769 DWARFDebugInfo* debug_info = DebugInfo(); 2770 if (debug_info) 2771 { 2772 const dw_offset_t cu_offset = debug_info->GetCompileUnitAranges().FindAddress(file_vm_addr); 2773 if (cu_offset != DW_INVALID_OFFSET) 2774 { 2775 uint32_t cu_idx = DW_INVALID_INDEX; 2776 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnit(cu_offset, &cu_idx).get(); 2777 if (dwarf_cu) 2778 { 2779 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx); 2780 if (sc.comp_unit) 2781 { 2782 resolved |= eSymbolContextCompUnit; 2783 2784 bool force_check_line_table = false; 2785 if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock)) 2786 { 2787 DWARFDebugInfoEntry *function_die = NULL; 2788 DWARFDebugInfoEntry *block_die = NULL; 2789 if (resolve_scope & eSymbolContextBlock) 2790 { 2791 dwarf_cu->LookupAddress(file_vm_addr, &function_die, &block_die); 2792 } 2793 else 2794 { 2795 dwarf_cu->LookupAddress(file_vm_addr, &function_die, NULL); 2796 } 2797 2798 if (function_die != NULL) 2799 { 2800 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get(); 2801 if (sc.function == NULL) 2802 sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die); 2803 } 2804 else 2805 { 2806 // We might have had a compile unit that had discontiguous 2807 // address ranges where the gaps are symbols that don't have 2808 // any debug info. Discontiguous compile unit address ranges 2809 // should only happen when there aren't other functions from 2810 // other compile units in these gaps. This helps keep the size 2811 // of the aranges down. 2812 force_check_line_table = true; 2813 } 2814 2815 if (sc.function != NULL) 2816 { 2817 resolved |= eSymbolContextFunction; 2818 2819 if (resolve_scope & eSymbolContextBlock) 2820 { 2821 Block& block = sc.function->GetBlock (true); 2822 2823 if (block_die != NULL) 2824 sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset())); 2825 else 2826 sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset())); 2827 if (sc.block) 2828 resolved |= eSymbolContextBlock; 2829 } 2830 } 2831 } 2832 2833 if ((resolve_scope & eSymbolContextLineEntry) || force_check_line_table) 2834 { 2835 LineTable *line_table = sc.comp_unit->GetLineTable(); 2836 if (line_table != NULL) 2837 { 2838 // And address that makes it into this function should be in terms 2839 // of this debug file if there is no debug map, or it will be an 2840 // address in the .o file which needs to be fixed up to be in terms 2841 // of the debug map executable. Either way, calling FixupAddress() 2842 // will work for us. 2843 Address exe_so_addr (so_addr); 2844 if (FixupAddress(exe_so_addr)) 2845 { 2846 if (line_table->FindLineEntryByAddress (exe_so_addr, sc.line_entry)) 2847 { 2848 resolved |= eSymbolContextLineEntry; 2849 } 2850 } 2851 } 2852 } 2853 2854 if (force_check_line_table && !(resolved & eSymbolContextLineEntry)) 2855 { 2856 // We might have had a compile unit that had discontiguous 2857 // address ranges where the gaps are symbols that don't have 2858 // any debug info. Discontiguous compile unit address ranges 2859 // should only happen when there aren't other functions from 2860 // other compile units in these gaps. This helps keep the size 2861 // of the aranges down. 2862 sc.comp_unit = NULL; 2863 resolved &= ~eSymbolContextCompUnit; 2864 } 2865 } 2866 else 2867 { 2868 GetObjectFile()->GetModule()->ReportWarning ("0x%8.8x: compile unit %u failed to create a valid lldb_private::CompileUnit class.", 2869 cu_offset, 2870 cu_idx); 2871 } 2872 } 2873 } 2874 } 2875 } 2876 return resolved; 2877} 2878 2879 2880 2881uint32_t 2882SymbolFileDWARF::ResolveSymbolContext(const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list) 2883{ 2884 const uint32_t prev_size = sc_list.GetSize(); 2885 if (resolve_scope & eSymbolContextCompUnit) 2886 { 2887 DWARFDebugInfo* debug_info = DebugInfo(); 2888 if (debug_info) 2889 { 2890 uint32_t cu_idx; 2891 DWARFCompileUnit* dwarf_cu = NULL; 2892 2893 for (cu_idx = 0; (dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx)) != NULL; ++cu_idx) 2894 { 2895 CompileUnit *dc_cu = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx); 2896 const bool full_match = (bool)file_spec.GetDirectory(); 2897 bool file_spec_matches_cu_file_spec = dc_cu != NULL && FileSpec::Equal(file_spec, *dc_cu, full_match); 2898 if (check_inlines || file_spec_matches_cu_file_spec) 2899 { 2900 SymbolContext sc (m_obj_file->GetModule()); 2901 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx); 2902 if (sc.comp_unit) 2903 { 2904 uint32_t file_idx = UINT32_MAX; 2905 2906 // If we are looking for inline functions only and we don't 2907 // find it in the support files, we are done. 2908 if (check_inlines) 2909 { 2910 file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true); 2911 if (file_idx == UINT32_MAX) 2912 continue; 2913 } 2914 2915 if (line != 0) 2916 { 2917 LineTable *line_table = sc.comp_unit->GetLineTable(); 2918 2919 if (line_table != NULL && line != 0) 2920 { 2921 // We will have already looked up the file index if 2922 // we are searching for inline entries. 2923 if (!check_inlines) 2924 file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true); 2925 2926 if (file_idx != UINT32_MAX) 2927 { 2928 uint32_t found_line; 2929 uint32_t line_idx = line_table->FindLineEntryIndexByFileIndex (0, file_idx, line, false, &sc.line_entry); 2930 found_line = sc.line_entry.line; 2931 2932 while (line_idx != UINT32_MAX) 2933 { 2934 sc.function = NULL; 2935 sc.block = NULL; 2936 if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock)) 2937 { 2938 const lldb::addr_t file_vm_addr = sc.line_entry.range.GetBaseAddress().GetFileAddress(); 2939 if (file_vm_addr != LLDB_INVALID_ADDRESS) 2940 { 2941 DWARFDebugInfoEntry *function_die = NULL; 2942 DWARFDebugInfoEntry *block_die = NULL; 2943 dwarf_cu->LookupAddress(file_vm_addr, &function_die, resolve_scope & eSymbolContextBlock ? &block_die : NULL); 2944 2945 if (function_die != NULL) 2946 { 2947 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get(); 2948 if (sc.function == NULL) 2949 sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die); 2950 } 2951 2952 if (sc.function != NULL) 2953 { 2954 Block& block = sc.function->GetBlock (true); 2955 2956 if (block_die != NULL) 2957 sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset())); 2958 else 2959 sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset())); 2960 } 2961 } 2962 } 2963 2964 sc_list.Append(sc); 2965 line_idx = line_table->FindLineEntryIndexByFileIndex (line_idx + 1, file_idx, found_line, true, &sc.line_entry); 2966 } 2967 } 2968 } 2969 else if (file_spec_matches_cu_file_spec && !check_inlines) 2970 { 2971 // only append the context if we aren't looking for inline call sites 2972 // by file and line and if the file spec matches that of the compile unit 2973 sc_list.Append(sc); 2974 } 2975 } 2976 else if (file_spec_matches_cu_file_spec && !check_inlines) 2977 { 2978 // only append the context if we aren't looking for inline call sites 2979 // by file and line and if the file spec matches that of the compile unit 2980 sc_list.Append(sc); 2981 } 2982 2983 if (!check_inlines) 2984 break; 2985 } 2986 } 2987 } 2988 } 2989 } 2990 return sc_list.GetSize() - prev_size; 2991} 2992 2993void 2994SymbolFileDWARF::Index () 2995{ 2996 if (m_indexed) 2997 return; 2998 m_indexed = true; 2999 Timer scoped_timer (__PRETTY_FUNCTION__, 3000 "SymbolFileDWARF::Index (%s)", 3001 GetObjectFile()->GetFileSpec().GetFilename().AsCString()); 3002 3003 DWARFDebugInfo* debug_info = DebugInfo(); 3004 if (debug_info) 3005 { 3006 uint32_t cu_idx = 0; 3007 const uint32_t num_compile_units = GetNumCompileUnits(); 3008 for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) 3009 { 3010 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx); 3011 3012 bool clear_dies = dwarf_cu->ExtractDIEsIfNeeded (false) > 1; 3013 3014 dwarf_cu->Index (cu_idx, 3015 m_function_basename_index, 3016 m_function_fullname_index, 3017 m_function_method_index, 3018 m_function_selector_index, 3019 m_objc_class_selectors_index, 3020 m_global_index, 3021 m_type_index, 3022 m_namespace_index); 3023 3024 // Keep memory down by clearing DIEs if this generate function 3025 // caused them to be parsed 3026 if (clear_dies) 3027 dwarf_cu->ClearDIEs (true); 3028 } 3029 3030 m_function_basename_index.Finalize(); 3031 m_function_fullname_index.Finalize(); 3032 m_function_method_index.Finalize(); 3033 m_function_selector_index.Finalize(); 3034 m_objc_class_selectors_index.Finalize(); 3035 m_global_index.Finalize(); 3036 m_type_index.Finalize(); 3037 m_namespace_index.Finalize(); 3038 3039#if defined (ENABLE_DEBUG_PRINTF) 3040 StreamFile s(stdout, false); 3041 s.Printf ("DWARF index for '%s':", 3042 GetObjectFile()->GetFileSpec().GetPath().c_str()); 3043 s.Printf("\nFunction basenames:\n"); m_function_basename_index.Dump (&s); 3044 s.Printf("\nFunction fullnames:\n"); m_function_fullname_index.Dump (&s); 3045 s.Printf("\nFunction methods:\n"); m_function_method_index.Dump (&s); 3046 s.Printf("\nFunction selectors:\n"); m_function_selector_index.Dump (&s); 3047 s.Printf("\nObjective C class selectors:\n"); m_objc_class_selectors_index.Dump (&s); 3048 s.Printf("\nGlobals and statics:\n"); m_global_index.Dump (&s); 3049 s.Printf("\nTypes:\n"); m_type_index.Dump (&s); 3050 s.Printf("\nNamepaces:\n"); m_namespace_index.Dump (&s); 3051#endif 3052 } 3053} 3054 3055bool 3056SymbolFileDWARF::NamespaceDeclMatchesThisSymbolFile (const ClangNamespaceDecl *namespace_decl) 3057{ 3058 if (namespace_decl == NULL) 3059 { 3060 // Invalid namespace decl which means we aren't matching only things 3061 // in this symbol file, so return true to indicate it matches this 3062 // symbol file. 3063 return true; 3064 } 3065 3066 clang::ASTContext *namespace_ast = namespace_decl->GetASTContext(); 3067 3068 if (namespace_ast == NULL) 3069 return true; // No AST in the "namespace_decl", return true since it 3070 // could then match any symbol file, including this one 3071 3072 if (namespace_ast == GetClangASTContext().getASTContext()) 3073 return true; // The ASTs match, return true 3074 3075 // The namespace AST was valid, and it does not match... 3076 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3077 3078 if (log) 3079 GetObjectFile()->GetModule()->LogMessage(log, "Valid namespace does not match symbol file"); 3080 3081 return false; 3082} 3083 3084bool 3085SymbolFileDWARF::DIEIsInNamespace (const ClangNamespaceDecl *namespace_decl, 3086 DWARFCompileUnit* cu, 3087 const DWARFDebugInfoEntry* die) 3088{ 3089 // No namespace specified, so the answesr i 3090 if (namespace_decl == NULL) 3091 return true; 3092 3093 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3094 3095 const DWARFDebugInfoEntry *decl_ctx_die = NULL; 3096 clang::DeclContext *die_clang_decl_ctx = GetClangDeclContextContainingDIE (cu, die, &decl_ctx_die); 3097 if (decl_ctx_die) 3098 { 3099 clang::NamespaceDecl *clang_namespace_decl = namespace_decl->GetNamespaceDecl(); 3100 3101 if (clang_namespace_decl) 3102 { 3103 if (decl_ctx_die->Tag() != DW_TAG_namespace) 3104 { 3105 if (log) 3106 GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent is not a namespace"); 3107 return false; 3108 } 3109 3110 if (clang_namespace_decl == die_clang_decl_ctx) 3111 return true; 3112 else 3113 return false; 3114 } 3115 else 3116 { 3117 // We have a namespace_decl that was not NULL but it contained 3118 // a NULL "clang::NamespaceDecl", so this means the global namespace 3119 // So as long the the contained decl context DIE isn't a namespace 3120 // we should be ok. 3121 if (decl_ctx_die->Tag() != DW_TAG_namespace) 3122 return true; 3123 } 3124 } 3125 3126 if (log) 3127 GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent doesn't exist"); 3128 3129 return false; 3130} 3131uint32_t 3132SymbolFileDWARF::FindGlobalVariables (const ConstString &name, const lldb_private::ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables) 3133{ 3134 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3135 3136 if (log) 3137 { 3138 GetObjectFile()->GetModule()->LogMessage (log, 3139 "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables)", 3140 name.GetCString(), 3141 namespace_decl, 3142 append, 3143 max_matches); 3144 } 3145 3146 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) 3147 return 0; 3148 3149 DWARFDebugInfo* info = DebugInfo(); 3150 if (info == NULL) 3151 return 0; 3152 3153 // If we aren't appending the results to this list, then clear the list 3154 if (!append) 3155 variables.Clear(); 3156 3157 // Remember how many variables are in the list before we search in case 3158 // we are appending the results to a variable list. 3159 const uint32_t original_size = variables.GetSize(); 3160 3161 DIEArray die_offsets; 3162 3163 if (m_using_apple_tables) 3164 { 3165 if (m_apple_names_ap.get()) 3166 { 3167 const char *name_cstr = name.GetCString(); 3168 const char *base_name_start; 3169 const char *base_name_end = NULL; 3170 3171 if (!CPPLanguageRuntime::StripNamespacesFromVariableName(name_cstr, base_name_start, base_name_end)) 3172 base_name_start = name_cstr; 3173 3174 m_apple_names_ap->FindByName (base_name_start, die_offsets); 3175 } 3176 } 3177 else 3178 { 3179 // Index the DWARF if we haven't already 3180 if (!m_indexed) 3181 Index (); 3182 3183 m_global_index.Find (name, die_offsets); 3184 } 3185 3186 const size_t num_die_matches = die_offsets.size(); 3187 if (num_die_matches) 3188 { 3189 SymbolContext sc; 3190 sc.module_sp = m_obj_file->GetModule(); 3191 assert (sc.module_sp); 3192 3193 DWARFDebugInfo* debug_info = DebugInfo(); 3194 DWARFCompileUnit* dwarf_cu = NULL; 3195 const DWARFDebugInfoEntry* die = NULL; 3196 bool done = false; 3197 for (size_t i=0; i<num_die_matches && !done; ++i) 3198 { 3199 const dw_offset_t die_offset = die_offsets[i]; 3200 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3201 3202 if (die) 3203 { 3204 switch (die->Tag()) 3205 { 3206 default: 3207 case DW_TAG_subprogram: 3208 case DW_TAG_inlined_subroutine: 3209 case DW_TAG_try_block: 3210 case DW_TAG_catch_block: 3211 break; 3212 3213 case DW_TAG_variable: 3214 { 3215 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 3216 3217 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 3218 continue; 3219 3220 ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables); 3221 3222 if (variables.GetSize() - original_size >= max_matches) 3223 done = true; 3224 } 3225 break; 3226 } 3227 } 3228 else 3229 { 3230 if (m_using_apple_tables) 3231 { 3232 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')\n", 3233 die_offset, name.GetCString()); 3234 } 3235 } 3236 } 3237 } 3238 3239 // Return the number of variable that were appended to the list 3240 const uint32_t num_matches = variables.GetSize() - original_size; 3241 if (log && num_matches > 0) 3242 { 3243 GetObjectFile()->GetModule()->LogMessage (log, 3244 "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables) => %u", 3245 name.GetCString(), 3246 namespace_decl, 3247 append, 3248 max_matches, 3249 num_matches); 3250 } 3251 return num_matches; 3252} 3253 3254uint32_t 3255SymbolFileDWARF::FindGlobalVariables(const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables) 3256{ 3257 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3258 3259 if (log) 3260 { 3261 GetObjectFile()->GetModule()->LogMessage (log, 3262 "SymbolFileDWARF::FindGlobalVariables (regex=\"%s\", append=%u, max_matches=%u, variables)", 3263 regex.GetText(), 3264 append, 3265 max_matches); 3266 } 3267 3268 DWARFDebugInfo* info = DebugInfo(); 3269 if (info == NULL) 3270 return 0; 3271 3272 // If we aren't appending the results to this list, then clear the list 3273 if (!append) 3274 variables.Clear(); 3275 3276 // Remember how many variables are in the list before we search in case 3277 // we are appending the results to a variable list. 3278 const uint32_t original_size = variables.GetSize(); 3279 3280 DIEArray die_offsets; 3281 3282 if (m_using_apple_tables) 3283 { 3284 if (m_apple_names_ap.get()) 3285 { 3286 DWARFMappedHash::DIEInfoArray hash_data_array; 3287 if (m_apple_names_ap->AppendAllDIEsThatMatchingRegex (regex, hash_data_array)) 3288 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); 3289 } 3290 } 3291 else 3292 { 3293 // Index the DWARF if we haven't already 3294 if (!m_indexed) 3295 Index (); 3296 3297 m_global_index.Find (regex, die_offsets); 3298 } 3299 3300 SymbolContext sc; 3301 sc.module_sp = m_obj_file->GetModule(); 3302 assert (sc.module_sp); 3303 3304 DWARFCompileUnit* dwarf_cu = NULL; 3305 const DWARFDebugInfoEntry* die = NULL; 3306 const size_t num_matches = die_offsets.size(); 3307 if (num_matches) 3308 { 3309 DWARFDebugInfo* debug_info = DebugInfo(); 3310 for (size_t i=0; i<num_matches; ++i) 3311 { 3312 const dw_offset_t die_offset = die_offsets[i]; 3313 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3314 3315 if (die) 3316 { 3317 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 3318 3319 ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables); 3320 3321 if (variables.GetSize() - original_size >= max_matches) 3322 break; 3323 } 3324 else 3325 { 3326 if (m_using_apple_tables) 3327 { 3328 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for regex '%s')\n", 3329 die_offset, regex.GetText()); 3330 } 3331 } 3332 } 3333 } 3334 3335 // Return the number of variable that were appended to the list 3336 return variables.GetSize() - original_size; 3337} 3338 3339 3340bool 3341SymbolFileDWARF::ResolveFunction (dw_offset_t die_offset, 3342 DWARFCompileUnit *&dwarf_cu, 3343 SymbolContextList& sc_list) 3344{ 3345 const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3346 return ResolveFunction (dwarf_cu, die, sc_list); 3347} 3348 3349 3350bool 3351SymbolFileDWARF::ResolveFunction (DWARFCompileUnit *cu, 3352 const DWARFDebugInfoEntry *die, 3353 SymbolContextList& sc_list) 3354{ 3355 SymbolContext sc; 3356 3357 if (die == NULL) 3358 return false; 3359 3360 // If we were passed a die that is not a function, just return false... 3361 if (die->Tag() != DW_TAG_subprogram && die->Tag() != DW_TAG_inlined_subroutine) 3362 return false; 3363 3364 const DWARFDebugInfoEntry* inlined_die = NULL; 3365 if (die->Tag() == DW_TAG_inlined_subroutine) 3366 { 3367 inlined_die = die; 3368 3369 while ((die = die->GetParent()) != NULL) 3370 { 3371 if (die->Tag() == DW_TAG_subprogram) 3372 break; 3373 } 3374 } 3375 assert (die->Tag() == DW_TAG_subprogram); 3376 if (GetFunction (cu, die, sc)) 3377 { 3378 Address addr; 3379 // Parse all blocks if needed 3380 if (inlined_die) 3381 { 3382 sc.block = sc.function->GetBlock (true).FindBlockByID (MakeUserID(inlined_die->GetOffset())); 3383 assert (sc.block != NULL); 3384 if (sc.block->GetStartAddress (addr) == false) 3385 addr.Clear(); 3386 } 3387 else 3388 { 3389 sc.block = NULL; 3390 addr = sc.function->GetAddressRange().GetBaseAddress(); 3391 } 3392 3393 if (addr.IsValid()) 3394 { 3395 sc_list.Append(sc); 3396 return true; 3397 } 3398 } 3399 3400 return false; 3401} 3402 3403void 3404SymbolFileDWARF::FindFunctions (const ConstString &name, 3405 const NameToDIE &name_to_die, 3406 SymbolContextList& sc_list) 3407{ 3408 DIEArray die_offsets; 3409 if (name_to_die.Find (name, die_offsets)) 3410 { 3411 ParseFunctions (die_offsets, sc_list); 3412 } 3413} 3414 3415 3416void 3417SymbolFileDWARF::FindFunctions (const RegularExpression ®ex, 3418 const NameToDIE &name_to_die, 3419 SymbolContextList& sc_list) 3420{ 3421 DIEArray die_offsets; 3422 if (name_to_die.Find (regex, die_offsets)) 3423 { 3424 ParseFunctions (die_offsets, sc_list); 3425 } 3426} 3427 3428 3429void 3430SymbolFileDWARF::FindFunctions (const RegularExpression ®ex, 3431 const DWARFMappedHash::MemoryTable &memory_table, 3432 SymbolContextList& sc_list) 3433{ 3434 DIEArray die_offsets; 3435 DWARFMappedHash::DIEInfoArray hash_data_array; 3436 if (memory_table.AppendAllDIEsThatMatchingRegex (regex, hash_data_array)) 3437 { 3438 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); 3439 ParseFunctions (die_offsets, sc_list); 3440 } 3441} 3442 3443void 3444SymbolFileDWARF::ParseFunctions (const DIEArray &die_offsets, 3445 SymbolContextList& sc_list) 3446{ 3447 const size_t num_matches = die_offsets.size(); 3448 if (num_matches) 3449 { 3450 SymbolContext sc; 3451 3452 DWARFCompileUnit* dwarf_cu = NULL; 3453 for (size_t i=0; i<num_matches; ++i) 3454 { 3455 const dw_offset_t die_offset = die_offsets[i]; 3456 ResolveFunction (die_offset, dwarf_cu, sc_list); 3457 } 3458 } 3459} 3460 3461bool 3462SymbolFileDWARF::FunctionDieMatchesPartialName (const DWARFDebugInfoEntry* die, 3463 const DWARFCompileUnit *dwarf_cu, 3464 uint32_t name_type_mask, 3465 const char *partial_name, 3466 const char *base_name_start, 3467 const char *base_name_end) 3468{ 3469 // If we are looking only for methods, throw away all the ones that are or aren't in C++ classes: 3470 if (name_type_mask == eFunctionNameTypeMethod || name_type_mask == eFunctionNameTypeBase) 3471 { 3472 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIEOffset(die->GetOffset()); 3473 if (!containing_decl_ctx) 3474 return false; 3475 3476 bool is_cxx_method = DeclKindIsCXXClass(containing_decl_ctx->getDeclKind()); 3477 3478 if (name_type_mask == eFunctionNameTypeMethod) 3479 { 3480 if (is_cxx_method == false) 3481 return false; 3482 } 3483 3484 if (name_type_mask == eFunctionNameTypeBase) 3485 { 3486 if (is_cxx_method == true) 3487 return false; 3488 } 3489 } 3490 3491 // Now we need to check whether the name we got back for this type matches the extra specifications 3492 // that were in the name we're looking up: 3493 if (base_name_start != partial_name || *base_name_end != '\0') 3494 { 3495 // First see if the stuff to the left matches the full name. To do that let's see if 3496 // we can pull out the mips linkage name attribute: 3497 3498 Mangled best_name; 3499 DWARFDebugInfoEntry::Attributes attributes; 3500 DWARFFormValue form_value; 3501 die->GetAttributes(this, dwarf_cu, NULL, attributes); 3502 uint32_t idx = attributes.FindAttributeIndex(DW_AT_MIPS_linkage_name); 3503 if (idx == UINT32_MAX) 3504 idx = attributes.FindAttributeIndex(DW_AT_linkage_name); 3505 if (idx != UINT32_MAX) 3506 { 3507 if (attributes.ExtractFormValueAtIndex(this, idx, form_value)) 3508 { 3509 const char *mangled_name = form_value.AsCString(&get_debug_str_data()); 3510 if (mangled_name) 3511 best_name.SetValue (ConstString(mangled_name), true); 3512 } 3513 } 3514 3515 if (!best_name) 3516 { 3517 idx = attributes.FindAttributeIndex(DW_AT_name); 3518 if (idx != UINT32_MAX && attributes.ExtractFormValueAtIndex(this, idx, form_value)) 3519 { 3520 const char *name = form_value.AsCString(&get_debug_str_data()); 3521 best_name.SetValue (ConstString(name), false); 3522 } 3523 } 3524 3525 if (best_name.GetDemangledName()) 3526 { 3527 const char *demangled = best_name.GetDemangledName().GetCString(); 3528 if (demangled) 3529 { 3530 std::string name_no_parens(partial_name, base_name_end - partial_name); 3531 const char *partial_in_demangled = strstr (demangled, name_no_parens.c_str()); 3532 if (partial_in_demangled == NULL) 3533 return false; 3534 else 3535 { 3536 // Sort out the case where our name is something like "Process::Destroy" and the match is 3537 // "SBProcess::Destroy" - that shouldn't be a match. We should really always match on 3538 // namespace boundaries... 3539 3540 if (partial_name[0] == ':' && partial_name[1] == ':') 3541 { 3542 // The partial name was already on a namespace boundary so all matches are good. 3543 return true; 3544 } 3545 else if (partial_in_demangled == demangled) 3546 { 3547 // They both start the same, so this is an good match. 3548 return true; 3549 } 3550 else 3551 { 3552 if (partial_in_demangled - demangled == 1) 3553 { 3554 // Only one character difference, can't be a namespace boundary... 3555 return false; 3556 } 3557 else if (*(partial_in_demangled - 1) == ':' && *(partial_in_demangled - 2) == ':') 3558 { 3559 // We are on a namespace boundary, so this is also good. 3560 return true; 3561 } 3562 else 3563 return false; 3564 } 3565 } 3566 } 3567 } 3568 } 3569 3570 return true; 3571} 3572 3573uint32_t 3574SymbolFileDWARF::FindFunctions (const ConstString &name, 3575 const lldb_private::ClangNamespaceDecl *namespace_decl, 3576 uint32_t name_type_mask, 3577 bool include_inlines, 3578 bool append, 3579 SymbolContextList& sc_list) 3580{ 3581 Timer scoped_timer (__PRETTY_FUNCTION__, 3582 "SymbolFileDWARF::FindFunctions (name = '%s')", 3583 name.AsCString()); 3584 3585 // eFunctionNameTypeAuto should be pre-resolved by a call to Module::PrepareForFunctionNameLookup() 3586 assert ((name_type_mask & eFunctionNameTypeAuto) == 0); 3587 3588 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3589 3590 if (log) 3591 { 3592 GetObjectFile()->GetModule()->LogMessage (log, 3593 "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list)", 3594 name.GetCString(), 3595 name_type_mask, 3596 append); 3597 } 3598 3599 // If we aren't appending the results to this list, then clear the list 3600 if (!append) 3601 sc_list.Clear(); 3602 3603 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) 3604 return 0; 3605 3606 // If name is empty then we won't find anything. 3607 if (name.IsEmpty()) 3608 return 0; 3609 3610 // Remember how many sc_list are in the list before we search in case 3611 // we are appending the results to a variable list. 3612 3613 const char *name_cstr = name.GetCString(); 3614 3615 const uint32_t original_size = sc_list.GetSize(); 3616 3617 DWARFDebugInfo* info = DebugInfo(); 3618 if (info == NULL) 3619 return 0; 3620 3621 DWARFCompileUnit *dwarf_cu = NULL; 3622 std::set<const DWARFDebugInfoEntry *> resolved_dies; 3623 if (m_using_apple_tables) 3624 { 3625 if (m_apple_names_ap.get()) 3626 { 3627 3628 DIEArray die_offsets; 3629 3630 uint32_t num_matches = 0; 3631 3632 if (name_type_mask & eFunctionNameTypeFull) 3633 { 3634 // If they asked for the full name, match what they typed. At some point we may 3635 // want to canonicalize this (strip double spaces, etc. For now, we just add all the 3636 // dies that we find by exact match. 3637 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets); 3638 for (uint32_t i = 0; i < num_matches; i++) 3639 { 3640 const dw_offset_t die_offset = die_offsets[i]; 3641 const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3642 if (die) 3643 { 3644 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 3645 continue; 3646 3647 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine) 3648 continue; 3649 3650 if (resolved_dies.find(die) == resolved_dies.end()) 3651 { 3652 if (ResolveFunction (dwarf_cu, die, sc_list)) 3653 resolved_dies.insert(die); 3654 } 3655 } 3656 else 3657 { 3658 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')", 3659 die_offset, name_cstr); 3660 } 3661 } 3662 } 3663 3664 if (name_type_mask & eFunctionNameTypeSelector) 3665 { 3666 if (namespace_decl && *namespace_decl) 3667 return 0; // no selectors in namespaces 3668 3669 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets); 3670 // Now make sure these are actually ObjC methods. In this case we can simply look up the name, 3671 // and if it is an ObjC method name, we're good. 3672 3673 for (uint32_t i = 0; i < num_matches; i++) 3674 { 3675 const dw_offset_t die_offset = die_offsets[i]; 3676 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3677 if (die) 3678 { 3679 const char *die_name = die->GetName(this, dwarf_cu); 3680 if (ObjCLanguageRuntime::IsPossibleObjCMethodName(die_name)) 3681 { 3682 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine) 3683 continue; 3684 3685 if (resolved_dies.find(die) == resolved_dies.end()) 3686 { 3687 if (ResolveFunction (dwarf_cu, die, sc_list)) 3688 resolved_dies.insert(die); 3689 } 3690 } 3691 } 3692 else 3693 { 3694 GetObjectFile()->GetModule()->ReportError ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')", 3695 die_offset, name_cstr); 3696 } 3697 } 3698 die_offsets.clear(); 3699 } 3700 3701 if (((name_type_mask & eFunctionNameTypeMethod) && !namespace_decl) || name_type_mask & eFunctionNameTypeBase) 3702 { 3703 // The apple_names table stores just the "base name" of C++ methods in the table. So we have to 3704 // extract the base name, look that up, and if there is any other information in the name we were 3705 // passed in we have to post-filter based on that. 3706 3707 // FIXME: Arrange the logic above so that we don't calculate the base name twice: 3708 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets); 3709 3710 for (uint32_t i = 0; i < num_matches; i++) 3711 { 3712 const dw_offset_t die_offset = die_offsets[i]; 3713 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 3714 if (die) 3715 { 3716 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine) 3717 continue; 3718 3719 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 3720 continue; 3721 3722 // If we get to here, the die is good, and we should add it: 3723 if (resolved_dies.find(die) == resolved_dies.end()) 3724 if (ResolveFunction (dwarf_cu, die, sc_list)) 3725 { 3726 bool keep_die = true; 3727 if ((name_type_mask & (eFunctionNameTypeBase|eFunctionNameTypeMethod)) != (eFunctionNameTypeBase|eFunctionNameTypeMethod)) 3728 { 3729 // We are looking for either basenames or methods, so we need to 3730 // trim out the ones we won't want by looking at the type 3731 SymbolContext sc; 3732 if (sc_list.GetLastContext(sc)) 3733 { 3734 if (sc.block) 3735 { 3736 // We have an inlined function 3737 } 3738 else if (sc.function) 3739 { 3740 Type *type = sc.function->GetType(); 3741 3742 if (type) 3743 { 3744 clang::DeclContext* decl_ctx = GetClangDeclContextContainingTypeUID (type->GetID()); 3745 if (decl_ctx->isRecord()) 3746 { 3747 if (name_type_mask & eFunctionNameTypeBase) 3748 { 3749 sc_list.RemoveContextAtIndex(sc_list.GetSize()-1); 3750 keep_die = false; 3751 } 3752 } 3753 else 3754 { 3755 if (name_type_mask & eFunctionNameTypeMethod) 3756 { 3757 sc_list.RemoveContextAtIndex(sc_list.GetSize()-1); 3758 keep_die = false; 3759 } 3760 } 3761 } 3762 else 3763 { 3764 GetObjectFile()->GetModule()->ReportWarning ("function at die offset 0x%8.8x had no function type", 3765 die_offset); 3766 } 3767 } 3768 } 3769 } 3770 if (keep_die) 3771 resolved_dies.insert(die); 3772 } 3773 } 3774 else 3775 { 3776 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')", 3777 die_offset, name_cstr); 3778 } 3779 } 3780 die_offsets.clear(); 3781 } 3782 } 3783 } 3784 else 3785 { 3786 3787 // Index the DWARF if we haven't already 3788 if (!m_indexed) 3789 Index (); 3790 3791 if (name_type_mask & eFunctionNameTypeFull) 3792 { 3793 FindFunctions (name, m_function_fullname_index, sc_list); 3794 3795 // FIXME Temporary workaround for global/anonymous namespace 3796 // functions on FreeBSD and Linux 3797#if defined (__FreeBSD__) || defined (__linux__) 3798 // If we didn't find any functions in the global namespace try 3799 // looking in the basename index but ignore any returned 3800 // functions that have a namespace (ie. mangled names starting with 3801 // '_ZN') but keep functions which have an anonymous namespace 3802 if (sc_list.GetSize() == 0) 3803 { 3804 SymbolContextList temp_sc_list; 3805 FindFunctions (name, m_function_basename_index, temp_sc_list); 3806 if (!namespace_decl) 3807 { 3808 SymbolContext sc; 3809 for (uint32_t i = 0; i < temp_sc_list.GetSize(); i++) 3810 { 3811 if (temp_sc_list.GetContextAtIndex(i, sc)) 3812 { 3813 ConstString mangled_name = sc.GetFunctionName(Mangled::ePreferMangled); 3814 ConstString demangled_name = sc.GetFunctionName(Mangled::ePreferDemangled); 3815 if (strncmp(mangled_name.GetCString(), "_ZN", 3) || 3816 !strncmp(demangled_name.GetCString(), "(anonymous namespace)", 21)) 3817 { 3818 sc_list.Append(sc); 3819 } 3820 } 3821 } 3822 } 3823 } 3824#endif 3825 } 3826 DIEArray die_offsets; 3827 DWARFCompileUnit *dwarf_cu = NULL; 3828 3829 if (name_type_mask & eFunctionNameTypeBase) 3830 { 3831 uint32_t num_base = m_function_basename_index.Find(name, die_offsets); 3832 for (uint32_t i = 0; i < num_base; i++) 3833 { 3834 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu); 3835 if (die) 3836 { 3837 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine) 3838 continue; 3839 3840 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 3841 continue; 3842 3843 // If we get to here, the die is good, and we should add it: 3844 if (resolved_dies.find(die) == resolved_dies.end()) 3845 { 3846 if (ResolveFunction (dwarf_cu, die, sc_list)) 3847 resolved_dies.insert(die); 3848 } 3849 } 3850 } 3851 die_offsets.clear(); 3852 } 3853 3854 if (name_type_mask & eFunctionNameTypeMethod) 3855 { 3856 if (namespace_decl && *namespace_decl) 3857 return 0; // no methods in namespaces 3858 3859 uint32_t num_base = m_function_method_index.Find(name, die_offsets); 3860 { 3861 for (uint32_t i = 0; i < num_base; i++) 3862 { 3863 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu); 3864 if (die) 3865 { 3866 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine) 3867 continue; 3868 3869 // If we get to here, the die is good, and we should add it: 3870 if (resolved_dies.find(die) == resolved_dies.end()) 3871 { 3872 if (ResolveFunction (dwarf_cu, die, sc_list)) 3873 resolved_dies.insert(die); 3874 } 3875 } 3876 } 3877 } 3878 die_offsets.clear(); 3879 } 3880 3881 if ((name_type_mask & eFunctionNameTypeSelector) && (!namespace_decl || !*namespace_decl)) 3882 { 3883 FindFunctions (name, m_function_selector_index, sc_list); 3884 } 3885 3886 } 3887 3888 // Return the number of variable that were appended to the list 3889 const uint32_t num_matches = sc_list.GetSize() - original_size; 3890 3891 if (log && num_matches > 0) 3892 { 3893 GetObjectFile()->GetModule()->LogMessage (log, 3894 "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list) => %u", 3895 name.GetCString(), 3896 name_type_mask, 3897 append, 3898 num_matches); 3899 } 3900 return num_matches; 3901} 3902 3903uint32_t 3904SymbolFileDWARF::FindFunctions(const RegularExpression& regex, bool include_inlines, bool append, SymbolContextList& sc_list) 3905{ 3906 Timer scoped_timer (__PRETTY_FUNCTION__, 3907 "SymbolFileDWARF::FindFunctions (regex = '%s')", 3908 regex.GetText()); 3909 3910 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3911 3912 if (log) 3913 { 3914 GetObjectFile()->GetModule()->LogMessage (log, 3915 "SymbolFileDWARF::FindFunctions (regex=\"%s\", append=%u, sc_list)", 3916 regex.GetText(), 3917 append); 3918 } 3919 3920 3921 // If we aren't appending the results to this list, then clear the list 3922 if (!append) 3923 sc_list.Clear(); 3924 3925 // Remember how many sc_list are in the list before we search in case 3926 // we are appending the results to a variable list. 3927 uint32_t original_size = sc_list.GetSize(); 3928 3929 if (m_using_apple_tables) 3930 { 3931 if (m_apple_names_ap.get()) 3932 FindFunctions (regex, *m_apple_names_ap, sc_list); 3933 } 3934 else 3935 { 3936 // Index the DWARF if we haven't already 3937 if (!m_indexed) 3938 Index (); 3939 3940 FindFunctions (regex, m_function_basename_index, sc_list); 3941 3942 FindFunctions (regex, m_function_fullname_index, sc_list); 3943 } 3944 3945 // Return the number of variable that were appended to the list 3946 return sc_list.GetSize() - original_size; 3947} 3948 3949uint32_t 3950SymbolFileDWARF::FindTypes (const SymbolContext& sc, 3951 const ConstString &name, 3952 const lldb_private::ClangNamespaceDecl *namespace_decl, 3953 bool append, 3954 uint32_t max_matches, 3955 TypeList& types) 3956{ 3957 DWARFDebugInfo* info = DebugInfo(); 3958 if (info == NULL) 3959 return 0; 3960 3961 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 3962 3963 if (log) 3964 { 3965 if (namespace_decl) 3966 { 3967 GetObjectFile()->GetModule()->LogMessage (log, 3968 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list)", 3969 name.GetCString(), 3970 namespace_decl->GetNamespaceDecl(), 3971 namespace_decl->GetQualifiedName().c_str(), 3972 append, 3973 max_matches); 3974 } 3975 else 3976 { 3977 GetObjectFile()->GetModule()->LogMessage (log, 3978 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list)", 3979 name.GetCString(), 3980 append, 3981 max_matches); 3982 } 3983 } 3984 3985 // If we aren't appending the results to this list, then clear the list 3986 if (!append) 3987 types.Clear(); 3988 3989 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) 3990 return 0; 3991 3992 DIEArray die_offsets; 3993 3994 if (m_using_apple_tables) 3995 { 3996 if (m_apple_types_ap.get()) 3997 { 3998 const char *name_cstr = name.GetCString(); 3999 m_apple_types_ap->FindByName (name_cstr, die_offsets); 4000 } 4001 } 4002 else 4003 { 4004 if (!m_indexed) 4005 Index (); 4006 4007 m_type_index.Find (name, die_offsets); 4008 } 4009 4010 const size_t num_die_matches = die_offsets.size(); 4011 4012 if (num_die_matches) 4013 { 4014 const uint32_t initial_types_size = types.GetSize(); 4015 DWARFCompileUnit* dwarf_cu = NULL; 4016 const DWARFDebugInfoEntry* die = NULL; 4017 DWARFDebugInfo* debug_info = DebugInfo(); 4018 for (size_t i=0; i<num_die_matches; ++i) 4019 { 4020 const dw_offset_t die_offset = die_offsets[i]; 4021 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 4022 4023 if (die) 4024 { 4025 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) 4026 continue; 4027 4028 Type *matching_type = ResolveType (dwarf_cu, die); 4029 if (matching_type) 4030 { 4031 // We found a type pointer, now find the shared pointer form our type list 4032 types.InsertUnique (matching_type->shared_from_this()); 4033 if (types.GetSize() >= max_matches) 4034 break; 4035 } 4036 } 4037 else 4038 { 4039 if (m_using_apple_tables) 4040 { 4041 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n", 4042 die_offset, name.GetCString()); 4043 } 4044 } 4045 4046 } 4047 const uint32_t num_matches = types.GetSize() - initial_types_size; 4048 if (log && num_matches) 4049 { 4050 if (namespace_decl) 4051 { 4052 GetObjectFile()->GetModule()->LogMessage (log, 4053 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list) => %u", 4054 name.GetCString(), 4055 namespace_decl->GetNamespaceDecl(), 4056 namespace_decl->GetQualifiedName().c_str(), 4057 append, 4058 max_matches, 4059 num_matches); 4060 } 4061 else 4062 { 4063 GetObjectFile()->GetModule()->LogMessage (log, 4064 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list) => %u", 4065 name.GetCString(), 4066 append, 4067 max_matches, 4068 num_matches); 4069 } 4070 } 4071 return num_matches; 4072 } 4073 return 0; 4074} 4075 4076 4077ClangNamespaceDecl 4078SymbolFileDWARF::FindNamespace (const SymbolContext& sc, 4079 const ConstString &name, 4080 const lldb_private::ClangNamespaceDecl *parent_namespace_decl) 4081{ 4082 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 4083 4084 if (log) 4085 { 4086 GetObjectFile()->GetModule()->LogMessage (log, 4087 "SymbolFileDWARF::FindNamespace (sc, name=\"%s\")", 4088 name.GetCString()); 4089 } 4090 4091 if (!NamespaceDeclMatchesThisSymbolFile(parent_namespace_decl)) 4092 return ClangNamespaceDecl(); 4093 4094 ClangNamespaceDecl namespace_decl; 4095 DWARFDebugInfo* info = DebugInfo(); 4096 if (info) 4097 { 4098 DIEArray die_offsets; 4099 4100 // Index if we already haven't to make sure the compile units 4101 // get indexed and make their global DIE index list 4102 if (m_using_apple_tables) 4103 { 4104 if (m_apple_namespaces_ap.get()) 4105 { 4106 const char *name_cstr = name.GetCString(); 4107 m_apple_namespaces_ap->FindByName (name_cstr, die_offsets); 4108 } 4109 } 4110 else 4111 { 4112 if (!m_indexed) 4113 Index (); 4114 4115 m_namespace_index.Find (name, die_offsets); 4116 } 4117 4118 DWARFCompileUnit* dwarf_cu = NULL; 4119 const DWARFDebugInfoEntry* die = NULL; 4120 const size_t num_matches = die_offsets.size(); 4121 if (num_matches) 4122 { 4123 DWARFDebugInfo* debug_info = DebugInfo(); 4124 for (size_t i=0; i<num_matches; ++i) 4125 { 4126 const dw_offset_t die_offset = die_offsets[i]; 4127 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 4128 4129 if (die) 4130 { 4131 if (parent_namespace_decl && !DIEIsInNamespace (parent_namespace_decl, dwarf_cu, die)) 4132 continue; 4133 4134 clang::NamespaceDecl *clang_namespace_decl = ResolveNamespaceDIE (dwarf_cu, die); 4135 if (clang_namespace_decl) 4136 { 4137 namespace_decl.SetASTContext (GetClangASTContext().getASTContext()); 4138 namespace_decl.SetNamespaceDecl (clang_namespace_decl); 4139 break; 4140 } 4141 } 4142 else 4143 { 4144 if (m_using_apple_tables) 4145 { 4146 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_namespaces accelerator table had bad die 0x%8.8x for '%s')\n", 4147 die_offset, name.GetCString()); 4148 } 4149 } 4150 4151 } 4152 } 4153 } 4154 if (log && namespace_decl.GetNamespaceDecl()) 4155 { 4156 GetObjectFile()->GetModule()->LogMessage (log, 4157 "SymbolFileDWARF::FindNamespace (sc, name=\"%s\") => clang::NamespaceDecl(%p) \"%s\"", 4158 name.GetCString(), 4159 namespace_decl.GetNamespaceDecl(), 4160 namespace_decl.GetQualifiedName().c_str()); 4161 } 4162 4163 return namespace_decl; 4164} 4165 4166uint32_t 4167SymbolFileDWARF::FindTypes(std::vector<dw_offset_t> die_offsets, uint32_t max_matches, TypeList& types) 4168{ 4169 // Remember how many sc_list are in the list before we search in case 4170 // we are appending the results to a variable list. 4171 uint32_t original_size = types.GetSize(); 4172 4173 const uint32_t num_die_offsets = die_offsets.size(); 4174 // Parse all of the types we found from the pubtypes matches 4175 uint32_t i; 4176 uint32_t num_matches = 0; 4177 for (i = 0; i < num_die_offsets; ++i) 4178 { 4179 Type *matching_type = ResolveTypeUID (die_offsets[i]); 4180 if (matching_type) 4181 { 4182 // We found a type pointer, now find the shared pointer form our type list 4183 types.InsertUnique (matching_type->shared_from_this()); 4184 ++num_matches; 4185 if (num_matches >= max_matches) 4186 break; 4187 } 4188 } 4189 4190 // Return the number of variable that were appended to the list 4191 return types.GetSize() - original_size; 4192} 4193 4194 4195size_t 4196SymbolFileDWARF::ParseChildParameters (const SymbolContext& sc, 4197 clang::DeclContext *containing_decl_ctx, 4198 DWARFCompileUnit* dwarf_cu, 4199 const DWARFDebugInfoEntry *parent_die, 4200 bool skip_artificial, 4201 bool &is_static, 4202 bool &is_variadic, 4203 TypeList* type_list, 4204 std::vector<ClangASTType>& function_param_types, 4205 std::vector<clang::ParmVarDecl*>& function_param_decls, 4206 unsigned &type_quals, 4207 ClangASTContext::TemplateParameterInfos &template_param_infos) 4208{ 4209 if (parent_die == NULL) 4210 return 0; 4211 4212 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); 4213 4214 size_t arg_idx = 0; 4215 const DWARFDebugInfoEntry *die; 4216 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 4217 { 4218 dw_tag_t tag = die->Tag(); 4219 switch (tag) 4220 { 4221 case DW_TAG_formal_parameter: 4222 { 4223 DWARFDebugInfoEntry::Attributes attributes; 4224 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); 4225 if (num_attributes > 0) 4226 { 4227 const char *name = NULL; 4228 Declaration decl; 4229 dw_offset_t param_type_die_offset = DW_INVALID_OFFSET; 4230 bool is_artificial = false; 4231 // one of None, Auto, Register, Extern, Static, PrivateExtern 4232 4233 clang::StorageClass storage = clang::SC_None; 4234 uint32_t i; 4235 for (i=0; i<num_attributes; ++i) 4236 { 4237 const dw_attr_t attr = attributes.AttributeAtIndex(i); 4238 DWARFFormValue form_value; 4239 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 4240 { 4241 switch (attr) 4242 { 4243 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 4244 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 4245 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 4246 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; 4247 case DW_AT_type: param_type_die_offset = form_value.Reference(dwarf_cu); break; 4248 case DW_AT_artificial: is_artificial = form_value.Boolean(); break; 4249 case DW_AT_location: 4250 // if (form_value.BlockData()) 4251 // { 4252 // const DWARFDataExtractor& debug_info_data = debug_info(); 4253 // uint32_t block_length = form_value.Unsigned(); 4254 // DWARFDataExtractor location(debug_info_data, form_value.BlockData() - debug_info_data.GetDataStart(), block_length); 4255 // } 4256 // else 4257 // { 4258 // } 4259 // break; 4260 case DW_AT_const_value: 4261 case DW_AT_default_value: 4262 case DW_AT_description: 4263 case DW_AT_endianity: 4264 case DW_AT_is_optional: 4265 case DW_AT_segment: 4266 case DW_AT_variable_parameter: 4267 default: 4268 case DW_AT_abstract_origin: 4269 case DW_AT_sibling: 4270 break; 4271 } 4272 } 4273 } 4274 4275 bool skip = false; 4276 if (skip_artificial) 4277 { 4278 if (is_artificial) 4279 { 4280 // In order to determine if a C++ member function is 4281 // "const" we have to look at the const-ness of "this"... 4282 // Ugly, but that 4283 if (arg_idx == 0) 4284 { 4285 if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind())) 4286 { 4287 // Often times compilers omit the "this" name for the 4288 // specification DIEs, so we can't rely upon the name 4289 // being in the formal parameter DIE... 4290 if (name == NULL || ::strcmp(name, "this")==0) 4291 { 4292 Type *this_type = ResolveTypeUID (param_type_die_offset); 4293 if (this_type) 4294 { 4295 uint32_t encoding_mask = this_type->GetEncodingMask(); 4296 if (encoding_mask & Type::eEncodingIsPointerUID) 4297 { 4298 is_static = false; 4299 4300 if (encoding_mask & (1u << Type::eEncodingIsConstUID)) 4301 type_quals |= clang::Qualifiers::Const; 4302 if (encoding_mask & (1u << Type::eEncodingIsVolatileUID)) 4303 type_quals |= clang::Qualifiers::Volatile; 4304 } 4305 } 4306 } 4307 } 4308 } 4309 skip = true; 4310 } 4311 else 4312 { 4313 4314 // HACK: Objective C formal parameters "self" and "_cmd" 4315 // are not marked as artificial in the DWARF... 4316 CompileUnit *comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); 4317 if (comp_unit) 4318 { 4319 switch (comp_unit->GetLanguage()) 4320 { 4321 case eLanguageTypeObjC: 4322 case eLanguageTypeObjC_plus_plus: 4323 if (name && name[0] && (strcmp (name, "self") == 0 || strcmp (name, "_cmd") == 0)) 4324 skip = true; 4325 break; 4326 default: 4327 break; 4328 } 4329 } 4330 } 4331 } 4332 4333 if (!skip) 4334 { 4335 Type *type = ResolveTypeUID(param_type_die_offset); 4336 if (type) 4337 { 4338 function_param_types.push_back (type->GetClangForwardType()); 4339 4340 clang::ParmVarDecl *param_var_decl = GetClangASTContext().CreateParameterDeclaration (name, 4341 type->GetClangForwardType(), 4342 storage); 4343 assert(param_var_decl); 4344 function_param_decls.push_back(param_var_decl); 4345 4346 GetClangASTContext().SetMetadataAsUserID (param_var_decl, MakeUserID(die->GetOffset())); 4347 } 4348 } 4349 } 4350 arg_idx++; 4351 } 4352 break; 4353 4354 case DW_TAG_unspecified_parameters: 4355 is_variadic = true; 4356 break; 4357 4358 case DW_TAG_template_type_parameter: 4359 case DW_TAG_template_value_parameter: 4360 ParseTemplateDIE (dwarf_cu, die,template_param_infos); 4361 break; 4362 4363 default: 4364 break; 4365 } 4366 } 4367 return arg_idx; 4368} 4369 4370size_t 4371SymbolFileDWARF::ParseChildEnumerators 4372( 4373 const SymbolContext& sc, 4374 lldb_private::ClangASTType &clang_type, 4375 bool is_signed, 4376 uint32_t enumerator_byte_size, 4377 DWARFCompileUnit* dwarf_cu, 4378 const DWARFDebugInfoEntry *parent_die 4379) 4380{ 4381 if (parent_die == NULL) 4382 return 0; 4383 4384 size_t enumerators_added = 0; 4385 const DWARFDebugInfoEntry *die; 4386 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); 4387 4388 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 4389 { 4390 const dw_tag_t tag = die->Tag(); 4391 if (tag == DW_TAG_enumerator) 4392 { 4393 DWARFDebugInfoEntry::Attributes attributes; 4394 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); 4395 if (num_child_attributes > 0) 4396 { 4397 const char *name = NULL; 4398 bool got_value = false; 4399 int64_t enum_value = 0; 4400 Declaration decl; 4401 4402 uint32_t i; 4403 for (i=0; i<num_child_attributes; ++i) 4404 { 4405 const dw_attr_t attr = attributes.AttributeAtIndex(i); 4406 DWARFFormValue form_value; 4407 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 4408 { 4409 switch (attr) 4410 { 4411 case DW_AT_const_value: 4412 got_value = true; 4413 if (is_signed) 4414 enum_value = form_value.Signed(); 4415 else 4416 enum_value = form_value.Unsigned(); 4417 break; 4418 4419 case DW_AT_name: 4420 name = form_value.AsCString(&get_debug_str_data()); 4421 break; 4422 4423 case DW_AT_description: 4424 default: 4425 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 4426 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 4427 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 4428 case DW_AT_sibling: 4429 break; 4430 } 4431 } 4432 } 4433 4434 if (name && name[0] && got_value) 4435 { 4436 clang_type.AddEnumerationValueToEnumerationType (clang_type.GetEnumerationIntegerType(), 4437 decl, 4438 name, 4439 enum_value, 4440 enumerator_byte_size * 8); 4441 ++enumerators_added; 4442 } 4443 } 4444 } 4445 } 4446 return enumerators_added; 4447} 4448 4449void 4450SymbolFileDWARF::ParseChildArrayInfo 4451( 4452 const SymbolContext& sc, 4453 DWARFCompileUnit* dwarf_cu, 4454 const DWARFDebugInfoEntry *parent_die, 4455 int64_t& first_index, 4456 std::vector<uint64_t>& element_orders, 4457 uint32_t& byte_stride, 4458 uint32_t& bit_stride 4459) 4460{ 4461 if (parent_die == NULL) 4462 return; 4463 4464 const DWARFDebugInfoEntry *die; 4465 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); 4466 for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) 4467 { 4468 const dw_tag_t tag = die->Tag(); 4469 switch (tag) 4470 { 4471 case DW_TAG_subrange_type: 4472 { 4473 DWARFDebugInfoEntry::Attributes attributes; 4474 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); 4475 if (num_child_attributes > 0) 4476 { 4477 uint64_t num_elements = 0; 4478 uint64_t lower_bound = 0; 4479 uint64_t upper_bound = 0; 4480 bool upper_bound_valid = false; 4481 uint32_t i; 4482 for (i=0; i<num_child_attributes; ++i) 4483 { 4484 const dw_attr_t attr = attributes.AttributeAtIndex(i); 4485 DWARFFormValue form_value; 4486 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 4487 { 4488 switch (attr) 4489 { 4490 case DW_AT_name: 4491 break; 4492 4493 case DW_AT_count: 4494 num_elements = form_value.Unsigned(); 4495 break; 4496 4497 case DW_AT_bit_stride: 4498 bit_stride = form_value.Unsigned(); 4499 break; 4500 4501 case DW_AT_byte_stride: 4502 byte_stride = form_value.Unsigned(); 4503 break; 4504 4505 case DW_AT_lower_bound: 4506 lower_bound = form_value.Unsigned(); 4507 break; 4508 4509 case DW_AT_upper_bound: 4510 upper_bound_valid = true; 4511 upper_bound = form_value.Unsigned(); 4512 break; 4513 4514 default: 4515 case DW_AT_abstract_origin: 4516 case DW_AT_accessibility: 4517 case DW_AT_allocated: 4518 case DW_AT_associated: 4519 case DW_AT_data_location: 4520 case DW_AT_declaration: 4521 case DW_AT_description: 4522 case DW_AT_sibling: 4523 case DW_AT_threads_scaled: 4524 case DW_AT_type: 4525 case DW_AT_visibility: 4526 break; 4527 } 4528 } 4529 } 4530 4531 if (num_elements == 0) 4532 { 4533 if (upper_bound_valid && upper_bound >= lower_bound) 4534 num_elements = upper_bound - lower_bound + 1; 4535 } 4536 4537 element_orders.push_back (num_elements); 4538 } 4539 } 4540 break; 4541 } 4542 } 4543} 4544 4545TypeSP 4546SymbolFileDWARF::GetTypeForDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry* die) 4547{ 4548 TypeSP type_sp; 4549 if (die != NULL) 4550 { 4551 assert(dwarf_cu != NULL); 4552 Type *type_ptr = m_die_to_type.lookup (die); 4553 if (type_ptr == NULL) 4554 { 4555 CompileUnit* lldb_cu = GetCompUnitForDWARFCompUnit(dwarf_cu); 4556 assert (lldb_cu); 4557 SymbolContext sc(lldb_cu); 4558 type_sp = ParseType(sc, dwarf_cu, die, NULL); 4559 } 4560 else if (type_ptr != DIE_IS_BEING_PARSED) 4561 { 4562 // Grab the existing type from the master types lists 4563 type_sp = type_ptr->shared_from_this(); 4564 } 4565 4566 } 4567 return type_sp; 4568} 4569 4570clang::DeclContext * 4571SymbolFileDWARF::GetClangDeclContextContainingDIEOffset (dw_offset_t die_offset) 4572{ 4573 if (die_offset != DW_INVALID_OFFSET) 4574 { 4575 DWARFCompileUnitSP cu_sp; 4576 const DWARFDebugInfoEntry* die = DebugInfo()->GetDIEPtr(die_offset, &cu_sp); 4577 return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL); 4578 } 4579 return NULL; 4580} 4581 4582clang::DeclContext * 4583SymbolFileDWARF::GetClangDeclContextForDIEOffset (const SymbolContext &sc, dw_offset_t die_offset) 4584{ 4585 if (die_offset != DW_INVALID_OFFSET) 4586 { 4587 DWARFDebugInfo* debug_info = DebugInfo(); 4588 if (debug_info) 4589 { 4590 DWARFCompileUnitSP cu_sp; 4591 const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(die_offset, &cu_sp); 4592 if (die) 4593 return GetClangDeclContextForDIE (sc, cu_sp.get(), die); 4594 } 4595 } 4596 return NULL; 4597} 4598 4599clang::NamespaceDecl * 4600SymbolFileDWARF::ResolveNamespaceDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry *die) 4601{ 4602 if (die && die->Tag() == DW_TAG_namespace) 4603 { 4604 // See if we already parsed this namespace DIE and associated it with a 4605 // uniqued namespace declaration 4606 clang::NamespaceDecl *namespace_decl = static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die]); 4607 if (namespace_decl) 4608 return namespace_decl; 4609 else 4610 { 4611 const char *namespace_name = die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL); 4612 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, NULL); 4613 namespace_decl = GetClangASTContext().GetUniqueNamespaceDeclaration (namespace_name, containing_decl_ctx); 4614 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 4615 if (log) 4616 { 4617 if (namespace_name) 4618 { 4619 GetObjectFile()->GetModule()->LogMessage (log, 4620 "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace with DW_AT_name(\"%s\") => clang::NamespaceDecl *%p (original = %p)", 4621 GetClangASTContext().getASTContext(), 4622 MakeUserID(die->GetOffset()), 4623 namespace_name, 4624 namespace_decl, 4625 namespace_decl->getOriginalNamespace()); 4626 } 4627 else 4628 { 4629 GetObjectFile()->GetModule()->LogMessage (log, 4630 "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p (original = %p)", 4631 GetClangASTContext().getASTContext(), 4632 MakeUserID(die->GetOffset()), 4633 namespace_decl, 4634 namespace_decl->getOriginalNamespace()); 4635 } 4636 } 4637 4638 if (namespace_decl) 4639 LinkDeclContextToDIE((clang::DeclContext*)namespace_decl, die); 4640 return namespace_decl; 4641 } 4642 } 4643 return NULL; 4644} 4645 4646clang::DeclContext * 4647SymbolFileDWARF::GetClangDeclContextForDIE (const SymbolContext &sc, DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) 4648{ 4649 clang::DeclContext *clang_decl_ctx = GetCachedClangDeclContextForDIE (die); 4650 if (clang_decl_ctx) 4651 return clang_decl_ctx; 4652 // If this DIE has a specification, or an abstract origin, then trace to those. 4653 4654 dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET); 4655 if (die_offset != DW_INVALID_OFFSET) 4656 return GetClangDeclContextForDIEOffset (sc, die_offset); 4657 4658 die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET); 4659 if (die_offset != DW_INVALID_OFFSET) 4660 return GetClangDeclContextForDIEOffset (sc, die_offset); 4661 4662 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 4663 if (log) 4664 GetObjectFile()->GetModule()->LogMessage(log, "SymbolFileDWARF::GetClangDeclContextForDIE (die = 0x%8.8x) %s '%s'", die->GetOffset(), DW_TAG_value_to_name(die->Tag()), die->GetName(this, cu)); 4665 // This is the DIE we want. Parse it, then query our map. 4666 bool assert_not_being_parsed = true; 4667 ResolveTypeUID (cu, die, assert_not_being_parsed); 4668 4669 clang_decl_ctx = GetCachedClangDeclContextForDIE (die); 4670 4671 return clang_decl_ctx; 4672} 4673 4674clang::DeclContext * 4675SymbolFileDWARF::GetClangDeclContextContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die, const DWARFDebugInfoEntry **decl_ctx_die_copy) 4676{ 4677 if (m_clang_tu_decl == NULL) 4678 m_clang_tu_decl = GetClangASTContext().getASTContext()->getTranslationUnitDecl(); 4679 4680 const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die); 4681 4682 if (decl_ctx_die_copy) 4683 *decl_ctx_die_copy = decl_ctx_die; 4684 4685 if (decl_ctx_die) 4686 { 4687 4688 DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find (decl_ctx_die); 4689 if (pos != m_die_to_decl_ctx.end()) 4690 return pos->second; 4691 4692 switch (decl_ctx_die->Tag()) 4693 { 4694 case DW_TAG_compile_unit: 4695 return m_clang_tu_decl; 4696 4697 case DW_TAG_namespace: 4698 return ResolveNamespaceDIE (cu, decl_ctx_die); 4699 break; 4700 4701 case DW_TAG_structure_type: 4702 case DW_TAG_union_type: 4703 case DW_TAG_class_type: 4704 { 4705 Type* type = ResolveType (cu, decl_ctx_die); 4706 if (type) 4707 { 4708 clang::DeclContext *decl_ctx = type->GetClangForwardType().GetDeclContextForType (); 4709 if (decl_ctx) 4710 { 4711 LinkDeclContextToDIE (decl_ctx, decl_ctx_die); 4712 if (decl_ctx) 4713 return decl_ctx; 4714 } 4715 } 4716 } 4717 break; 4718 4719 default: 4720 break; 4721 } 4722 } 4723 return m_clang_tu_decl; 4724} 4725 4726 4727const DWARFDebugInfoEntry * 4728SymbolFileDWARF::GetDeclContextDIEContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) 4729{ 4730 if (cu && die) 4731 { 4732 const DWARFDebugInfoEntry * const decl_die = die; 4733 4734 while (die != NULL) 4735 { 4736 // If this is the original DIE that we are searching for a declaration 4737 // for, then don't look in the cache as we don't want our own decl 4738 // context to be our decl context... 4739 if (decl_die != die) 4740 { 4741 switch (die->Tag()) 4742 { 4743 case DW_TAG_compile_unit: 4744 case DW_TAG_namespace: 4745 case DW_TAG_structure_type: 4746 case DW_TAG_union_type: 4747 case DW_TAG_class_type: 4748 return die; 4749 4750 default: 4751 break; 4752 } 4753 } 4754 4755 dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET); 4756 if (die_offset != DW_INVALID_OFFSET) 4757 { 4758 DWARFCompileUnit *spec_cu = cu; 4759 const DWARFDebugInfoEntry *spec_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &spec_cu); 4760 const DWARFDebugInfoEntry *spec_die_decl_ctx_die = GetDeclContextDIEContainingDIE (spec_cu, spec_die); 4761 if (spec_die_decl_ctx_die) 4762 return spec_die_decl_ctx_die; 4763 } 4764 4765 die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET); 4766 if (die_offset != DW_INVALID_OFFSET) 4767 { 4768 DWARFCompileUnit *abs_cu = cu; 4769 const DWARFDebugInfoEntry *abs_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &abs_cu); 4770 const DWARFDebugInfoEntry *abs_die_decl_ctx_die = GetDeclContextDIEContainingDIE (abs_cu, abs_die); 4771 if (abs_die_decl_ctx_die) 4772 return abs_die_decl_ctx_die; 4773 } 4774 4775 die = die->GetParent(); 4776 } 4777 } 4778 return NULL; 4779} 4780 4781 4782Symbol * 4783SymbolFileDWARF::GetObjCClassSymbol (const ConstString &objc_class_name) 4784{ 4785 Symbol *objc_class_symbol = NULL; 4786 if (m_obj_file) 4787 { 4788 Symtab *symtab = m_obj_file->GetSymtab (); 4789 if (symtab) 4790 { 4791 objc_class_symbol = symtab->FindFirstSymbolWithNameAndType (objc_class_name, 4792 eSymbolTypeObjCClass, 4793 Symtab::eDebugNo, 4794 Symtab::eVisibilityAny); 4795 } 4796 } 4797 return objc_class_symbol; 4798} 4799 4800// Some compilers don't emit the DW_AT_APPLE_objc_complete_type attribute. If they don't 4801// then we can end up looking through all class types for a complete type and never find 4802// the full definition. We need to know if this attribute is supported, so we determine 4803// this here and cache th result. We also need to worry about the debug map DWARF file 4804// if we are doing darwin DWARF in .o file debugging. 4805bool 4806SymbolFileDWARF::Supports_DW_AT_APPLE_objc_complete_type (DWARFCompileUnit *cu) 4807{ 4808 if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate) 4809 { 4810 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo; 4811 if (cu && cu->Supports_DW_AT_APPLE_objc_complete_type()) 4812 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; 4813 else 4814 { 4815 DWARFDebugInfo* debug_info = DebugInfo(); 4816 const uint32_t num_compile_units = GetNumCompileUnits(); 4817 for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) 4818 { 4819 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx); 4820 if (dwarf_cu != cu && dwarf_cu->Supports_DW_AT_APPLE_objc_complete_type()) 4821 { 4822 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; 4823 break; 4824 } 4825 } 4826 } 4827 if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolNo && GetDebugMapSymfile ()) 4828 return m_debug_map_symfile->Supports_DW_AT_APPLE_objc_complete_type (this); 4829 } 4830 return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes; 4831} 4832 4833// This function can be used when a DIE is found that is a forward declaration 4834// DIE and we want to try and find a type that has the complete definition. 4835TypeSP 4836SymbolFileDWARF::FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die, 4837 const ConstString &type_name, 4838 bool must_be_implementation) 4839{ 4840 4841 TypeSP type_sp; 4842 4843 if (!type_name || (must_be_implementation && !GetObjCClassSymbol (type_name))) 4844 return type_sp; 4845 4846 DIEArray die_offsets; 4847 4848 if (m_using_apple_tables) 4849 { 4850 if (m_apple_types_ap.get()) 4851 { 4852 const char *name_cstr = type_name.GetCString(); 4853 m_apple_types_ap->FindCompleteObjCClassByName (name_cstr, die_offsets, must_be_implementation); 4854 } 4855 } 4856 else 4857 { 4858 if (!m_indexed) 4859 Index (); 4860 4861 m_type_index.Find (type_name, die_offsets); 4862 } 4863 4864 const size_t num_matches = die_offsets.size(); 4865 4866 DWARFCompileUnit* type_cu = NULL; 4867 const DWARFDebugInfoEntry* type_die = NULL; 4868 if (num_matches) 4869 { 4870 DWARFDebugInfo* debug_info = DebugInfo(); 4871 for (size_t i=0; i<num_matches; ++i) 4872 { 4873 const dw_offset_t die_offset = die_offsets[i]; 4874 type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu); 4875 4876 if (type_die) 4877 { 4878 bool try_resolving_type = false; 4879 4880 // Don't try and resolve the DIE we are looking for with the DIE itself! 4881 if (type_die != die) 4882 { 4883 switch (type_die->Tag()) 4884 { 4885 case DW_TAG_class_type: 4886 case DW_TAG_structure_type: 4887 try_resolving_type = true; 4888 break; 4889 default: 4890 break; 4891 } 4892 } 4893 4894 if (try_resolving_type) 4895 { 4896 if (must_be_implementation && type_cu->Supports_DW_AT_APPLE_objc_complete_type()) 4897 try_resolving_type = type_die->GetAttributeValueAsUnsigned (this, type_cu, DW_AT_APPLE_objc_complete_type, 0); 4898 4899 if (try_resolving_type) 4900 { 4901 Type *resolved_type = ResolveType (type_cu, type_die, false); 4902 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) 4903 { 4904 DEBUG_PRINTF ("resolved 0x%8.8" PRIx64 " from %s to 0x%8.8" PRIx64 " (cu 0x%8.8" PRIx64 ")\n", 4905 MakeUserID(die->GetOffset()), 4906 m_obj_file->GetFileSpec().GetFilename().AsCString(), 4907 MakeUserID(type_die->GetOffset()), 4908 MakeUserID(type_cu->GetOffset())); 4909 4910 if (die) 4911 m_die_to_type[die] = resolved_type; 4912 type_sp = resolved_type->shared_from_this(); 4913 break; 4914 } 4915 } 4916 } 4917 } 4918 else 4919 { 4920 if (m_using_apple_tables) 4921 { 4922 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n", 4923 die_offset, type_name.GetCString()); 4924 } 4925 } 4926 4927 } 4928 } 4929 return type_sp; 4930} 4931 4932 4933//---------------------------------------------------------------------- 4934// This function helps to ensure that the declaration contexts match for 4935// two different DIEs. Often times debug information will refer to a 4936// forward declaration of a type (the equivalent of "struct my_struct;". 4937// There will often be a declaration of that type elsewhere that has the 4938// full definition. When we go looking for the full type "my_struct", we 4939// will find one or more matches in the accelerator tables and we will 4940// then need to make sure the type was in the same declaration context 4941// as the original DIE. This function can efficiently compare two DIEs 4942// and will return true when the declaration context matches, and false 4943// when they don't. 4944//---------------------------------------------------------------------- 4945bool 4946SymbolFileDWARF::DIEDeclContextsMatch (DWARFCompileUnit* cu1, const DWARFDebugInfoEntry *die1, 4947 DWARFCompileUnit* cu2, const DWARFDebugInfoEntry *die2) 4948{ 4949 if (die1 == die2) 4950 return true; 4951 4952#if defined (LLDB_CONFIGURATION_DEBUG) 4953 // You can't and shouldn't call this function with a compile unit from 4954 // two different SymbolFileDWARF instances. 4955 assert (DebugInfo()->ContainsCompileUnit (cu1)); 4956 assert (DebugInfo()->ContainsCompileUnit (cu2)); 4957#endif 4958 4959 DWARFDIECollection decl_ctx_1; 4960 DWARFDIECollection decl_ctx_2; 4961 //The declaration DIE stack is a stack of the declaration context 4962 // DIEs all the way back to the compile unit. If a type "T" is 4963 // declared inside a class "B", and class "B" is declared inside 4964 // a class "A" and class "A" is in a namespace "lldb", and the 4965 // namespace is in a compile unit, there will be a stack of DIEs: 4966 // 4967 // [0] DW_TAG_class_type for "B" 4968 // [1] DW_TAG_class_type for "A" 4969 // [2] DW_TAG_namespace for "lldb" 4970 // [3] DW_TAG_compile_unit for the source file. 4971 // 4972 // We grab both contexts and make sure that everything matches 4973 // all the way back to the compiler unit. 4974 4975 // First lets grab the decl contexts for both DIEs 4976 die1->GetDeclContextDIEs (this, cu1, decl_ctx_1); 4977 die2->GetDeclContextDIEs (this, cu2, decl_ctx_2); 4978 // Make sure the context arrays have the same size, otherwise 4979 // we are done 4980 const size_t count1 = decl_ctx_1.Size(); 4981 const size_t count2 = decl_ctx_2.Size(); 4982 if (count1 != count2) 4983 return false; 4984 4985 // Make sure the DW_TAG values match all the way back up the the 4986 // compile unit. If they don't, then we are done. 4987 const DWARFDebugInfoEntry *decl_ctx_die1; 4988 const DWARFDebugInfoEntry *decl_ctx_die2; 4989 size_t i; 4990 for (i=0; i<count1; i++) 4991 { 4992 decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i); 4993 decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i); 4994 if (decl_ctx_die1->Tag() != decl_ctx_die2->Tag()) 4995 return false; 4996 } 4997#if defined LLDB_CONFIGURATION_DEBUG 4998 4999 // Make sure the top item in the decl context die array is always 5000 // DW_TAG_compile_unit. If it isn't then something went wrong in 5001 // the DWARFDebugInfoEntry::GetDeclContextDIEs() function... 5002 assert (decl_ctx_1.GetDIEPtrAtIndex (count1 - 1)->Tag() == DW_TAG_compile_unit); 5003 5004#endif 5005 // Always skip the compile unit when comparing by only iterating up to 5006 // "count - 1". Here we compare the names as we go. 5007 for (i=0; i<count1 - 1; i++) 5008 { 5009 decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i); 5010 decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i); 5011 const char *name1 = decl_ctx_die1->GetName(this, cu1); 5012 const char *name2 = decl_ctx_die2->GetName(this, cu2); 5013 // If the string was from a DW_FORM_strp, then the pointer will often 5014 // be the same! 5015 if (name1 == name2) 5016 continue; 5017 5018 // Name pointers are not equal, so only compare the strings 5019 // if both are not NULL. 5020 if (name1 && name2) 5021 { 5022 // If the strings don't compare, we are done... 5023 if (strcmp(name1, name2) != 0) 5024 return false; 5025 } 5026 else 5027 { 5028 // One name was NULL while the other wasn't 5029 return false; 5030 } 5031 } 5032 // We made it through all of the checks and the declaration contexts 5033 // are equal. 5034 return true; 5035} 5036 5037// This function can be used when a DIE is found that is a forward declaration 5038// DIE and we want to try and find a type that has the complete definition. 5039// "cu" and "die" must be from this SymbolFileDWARF 5040TypeSP 5041SymbolFileDWARF::FindDefinitionTypeForDIE (DWARFCompileUnit* cu, 5042 const DWARFDebugInfoEntry *die, 5043 const ConstString &type_name) 5044{ 5045 TypeSP type_sp; 5046 5047#if defined (LLDB_CONFIGURATION_DEBUG) 5048 // You can't and shouldn't call this function with a compile unit from 5049 // another SymbolFileDWARF instance. 5050 assert (DebugInfo()->ContainsCompileUnit (cu)); 5051#endif 5052 5053 if (cu == NULL || die == NULL || !type_name) 5054 return type_sp; 5055 5056 std::string qualified_name; 5057 5058 Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION|DWARF_LOG_LOOKUPS)); 5059 if (log) 5060 { 5061 die->GetQualifiedName(this, cu, qualified_name); 5062 GetObjectFile()->GetModule()->LogMessage (log, 5063 "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x (%s), name='%s')", 5064 die->GetOffset(), 5065 qualified_name.c_str(), 5066 type_name.GetCString()); 5067 } 5068 5069 DIEArray die_offsets; 5070 5071 if (m_using_apple_tables) 5072 { 5073 if (m_apple_types_ap.get()) 5074 { 5075 const bool has_tag = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeTag); 5076 const bool has_qualified_name_hash = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeQualNameHash); 5077 if (has_tag && has_qualified_name_hash) 5078 { 5079 if (qualified_name.empty()) 5080 die->GetQualifiedName(this, cu, qualified_name); 5081 5082 const uint32_t qualified_name_hash = MappedHash::HashStringUsingDJB (qualified_name.c_str()); 5083 if (log) 5084 GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTagAndQualifiedNameHash()"); 5085 m_apple_types_ap->FindByNameAndTagAndQualifiedNameHash (type_name.GetCString(), die->Tag(), qualified_name_hash, die_offsets); 5086 } 5087 else if (has_tag > 1) 5088 { 5089 if (log) 5090 GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTag()"); 5091 m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), die->Tag(), die_offsets); 5092 } 5093 else 5094 { 5095 m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets); 5096 } 5097 } 5098 } 5099 else 5100 { 5101 if (!m_indexed) 5102 Index (); 5103 5104 m_type_index.Find (type_name, die_offsets); 5105 } 5106 5107 const size_t num_matches = die_offsets.size(); 5108 5109 const dw_tag_t die_tag = die->Tag(); 5110 5111 DWARFCompileUnit* type_cu = NULL; 5112 const DWARFDebugInfoEntry* type_die = NULL; 5113 if (num_matches) 5114 { 5115 DWARFDebugInfo* debug_info = DebugInfo(); 5116 for (size_t i=0; i<num_matches; ++i) 5117 { 5118 const dw_offset_t die_offset = die_offsets[i]; 5119 type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu); 5120 5121 if (type_die) 5122 { 5123 bool try_resolving_type = false; 5124 5125 // Don't try and resolve the DIE we are looking for with the DIE itself! 5126 if (type_die != die) 5127 { 5128 const dw_tag_t type_die_tag = type_die->Tag(); 5129 // Make sure the tags match 5130 if (type_die_tag == die_tag) 5131 { 5132 // The tags match, lets try resolving this type 5133 try_resolving_type = true; 5134 } 5135 else 5136 { 5137 // The tags don't match, but we need to watch our for a 5138 // forward declaration for a struct and ("struct foo") 5139 // ends up being a class ("class foo { ... };") or 5140 // vice versa. 5141 switch (type_die_tag) 5142 { 5143 case DW_TAG_class_type: 5144 // We had a "class foo", see if we ended up with a "struct foo { ... };" 5145 try_resolving_type = (die_tag == DW_TAG_structure_type); 5146 break; 5147 case DW_TAG_structure_type: 5148 // We had a "struct foo", see if we ended up with a "class foo { ... };" 5149 try_resolving_type = (die_tag == DW_TAG_class_type); 5150 break; 5151 default: 5152 // Tags don't match, don't event try to resolve 5153 // using this type whose name matches.... 5154 break; 5155 } 5156 } 5157 } 5158 5159 if (try_resolving_type) 5160 { 5161 if (log) 5162 { 5163 std::string qualified_name; 5164 type_die->GetQualifiedName(this, cu, qualified_name); 5165 GetObjectFile()->GetModule()->LogMessage (log, 5166 "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x, name='%s') trying die=0x%8.8x (%s)", 5167 die->GetOffset(), 5168 type_name.GetCString(), 5169 type_die->GetOffset(), 5170 qualified_name.c_str()); 5171 } 5172 5173 // Make sure the decl contexts match all the way up 5174 if (DIEDeclContextsMatch(cu, die, type_cu, type_die)) 5175 { 5176 Type *resolved_type = ResolveType (type_cu, type_die, false); 5177 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) 5178 { 5179 DEBUG_PRINTF ("resolved 0x%8.8" PRIx64 " (cu 0x%8.8" PRIx64 ") from %s to 0x%8.8" PRIx64 " (cu 0x%8.8" PRIx64 ")\n", 5180 MakeUserID(die->GetOffset()), 5181 MakeUserID(cu->GetOffset()), 5182 m_obj_file->GetFileSpec().GetFilename().AsCString(), 5183 MakeUserID(type_die->GetOffset()), 5184 MakeUserID(type_cu->GetOffset())); 5185 5186 m_die_to_type[die] = resolved_type; 5187 type_sp = resolved_type->shared_from_this(); 5188 break; 5189 } 5190 } 5191 } 5192 else 5193 { 5194 if (log) 5195 { 5196 std::string qualified_name; 5197 type_die->GetQualifiedName(this, cu, qualified_name); 5198 GetObjectFile()->GetModule()->LogMessage (log, 5199 "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x, name='%s') ignoring die=0x%8.8x (%s)", 5200 die->GetOffset(), 5201 type_name.GetCString(), 5202 type_die->GetOffset(), 5203 qualified_name.c_str()); 5204 } 5205 } 5206 } 5207 else 5208 { 5209 if (m_using_apple_tables) 5210 { 5211 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n", 5212 die_offset, type_name.GetCString()); 5213 } 5214 } 5215 5216 } 5217 } 5218 return type_sp; 5219} 5220 5221TypeSP 5222SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &dwarf_decl_ctx) 5223{ 5224 TypeSP type_sp; 5225 5226 const uint32_t dwarf_decl_ctx_count = dwarf_decl_ctx.GetSize(); 5227 if (dwarf_decl_ctx_count > 0) 5228 { 5229 const ConstString type_name(dwarf_decl_ctx[0].name); 5230 const dw_tag_t tag = dwarf_decl_ctx[0].tag; 5231 5232 if (type_name) 5233 { 5234 Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION|DWARF_LOG_LOOKUPS)); 5235 if (log) 5236 { 5237 GetObjectFile()->GetModule()->LogMessage (log, 5238 "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s')", 5239 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag), 5240 dwarf_decl_ctx.GetQualifiedName()); 5241 } 5242 5243 DIEArray die_offsets; 5244 5245 if (m_using_apple_tables) 5246 { 5247 if (m_apple_types_ap.get()) 5248 { 5249 const bool has_tag = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeTag); 5250 const bool has_qualified_name_hash = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeQualNameHash); 5251 if (has_tag && has_qualified_name_hash) 5252 { 5253 const char *qualified_name = dwarf_decl_ctx.GetQualifiedName(); 5254 const uint32_t qualified_name_hash = MappedHash::HashStringUsingDJB (qualified_name); 5255 if (log) 5256 GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTagAndQualifiedNameHash()"); 5257 m_apple_types_ap->FindByNameAndTagAndQualifiedNameHash (type_name.GetCString(), tag, qualified_name_hash, die_offsets); 5258 } 5259 else if (has_tag) 5260 { 5261 if (log) 5262 GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTag()"); 5263 m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), tag, die_offsets); 5264 } 5265 else 5266 { 5267 m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets); 5268 } 5269 } 5270 } 5271 else 5272 { 5273 if (!m_indexed) 5274 Index (); 5275 5276 m_type_index.Find (type_name, die_offsets); 5277 } 5278 5279 const size_t num_matches = die_offsets.size(); 5280 5281 5282 DWARFCompileUnit* type_cu = NULL; 5283 const DWARFDebugInfoEntry* type_die = NULL; 5284 if (num_matches) 5285 { 5286 DWARFDebugInfo* debug_info = DebugInfo(); 5287 for (size_t i=0; i<num_matches; ++i) 5288 { 5289 const dw_offset_t die_offset = die_offsets[i]; 5290 type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu); 5291 5292 if (type_die) 5293 { 5294 bool try_resolving_type = false; 5295 5296 // Don't try and resolve the DIE we are looking for with the DIE itself! 5297 const dw_tag_t type_tag = type_die->Tag(); 5298 // Make sure the tags match 5299 if (type_tag == tag) 5300 { 5301 // The tags match, lets try resolving this type 5302 try_resolving_type = true; 5303 } 5304 else 5305 { 5306 // The tags don't match, but we need to watch our for a 5307 // forward declaration for a struct and ("struct foo") 5308 // ends up being a class ("class foo { ... };") or 5309 // vice versa. 5310 switch (type_tag) 5311 { 5312 case DW_TAG_class_type: 5313 // We had a "class foo", see if we ended up with a "struct foo { ... };" 5314 try_resolving_type = (tag == DW_TAG_structure_type); 5315 break; 5316 case DW_TAG_structure_type: 5317 // We had a "struct foo", see if we ended up with a "class foo { ... };" 5318 try_resolving_type = (tag == DW_TAG_class_type); 5319 break; 5320 default: 5321 // Tags don't match, don't event try to resolve 5322 // using this type whose name matches.... 5323 break; 5324 } 5325 } 5326 5327 if (try_resolving_type) 5328 { 5329 DWARFDeclContext type_dwarf_decl_ctx; 5330 type_die->GetDWARFDeclContext (this, type_cu, type_dwarf_decl_ctx); 5331 5332 if (log) 5333 { 5334 GetObjectFile()->GetModule()->LogMessage (log, 5335 "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') trying die=0x%8.8x (%s)", 5336 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag), 5337 dwarf_decl_ctx.GetQualifiedName(), 5338 type_die->GetOffset(), 5339 type_dwarf_decl_ctx.GetQualifiedName()); 5340 } 5341 5342 // Make sure the decl contexts match all the way up 5343 if (dwarf_decl_ctx == type_dwarf_decl_ctx) 5344 { 5345 Type *resolved_type = ResolveType (type_cu, type_die, false); 5346 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) 5347 { 5348 type_sp = resolved_type->shared_from_this(); 5349 break; 5350 } 5351 } 5352 } 5353 else 5354 { 5355 if (log) 5356 { 5357 std::string qualified_name; 5358 type_die->GetQualifiedName(this, type_cu, qualified_name); 5359 GetObjectFile()->GetModule()->LogMessage (log, 5360 "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') ignoring die=0x%8.8x (%s)", 5361 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag), 5362 dwarf_decl_ctx.GetQualifiedName(), 5363 type_die->GetOffset(), 5364 qualified_name.c_str()); 5365 } 5366 } 5367 } 5368 else 5369 { 5370 if (m_using_apple_tables) 5371 { 5372 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n", 5373 die_offset, type_name.GetCString()); 5374 } 5375 } 5376 5377 } 5378 } 5379 } 5380 } 5381 return type_sp; 5382} 5383 5384bool 5385SymbolFileDWARF::CopyUniqueClassMethodTypes (SymbolFileDWARF *src_symfile, 5386 Type *class_type, 5387 DWARFCompileUnit* src_cu, 5388 const DWARFDebugInfoEntry *src_class_die, 5389 DWARFCompileUnit* dst_cu, 5390 const DWARFDebugInfoEntry *dst_class_die, 5391 llvm::SmallVectorImpl <const DWARFDebugInfoEntry *> &failures) 5392{ 5393 if (!class_type || !src_cu || !src_class_die || !dst_cu || !dst_class_die) 5394 return false; 5395 if (src_class_die->Tag() != dst_class_die->Tag()) 5396 return false; 5397 5398 // We need to complete the class type so we can get all of the method types 5399 // parsed so we can then unique those types to their equivalent counterparts 5400 // in "dst_cu" and "dst_class_die" 5401 class_type->GetClangFullType(); 5402 5403 const DWARFDebugInfoEntry *src_die; 5404 const DWARFDebugInfoEntry *dst_die; 5405 UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die; 5406 UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die; 5407 UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die_artificial; 5408 UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die_artificial; 5409 for (src_die = src_class_die->GetFirstChild(); src_die != NULL; src_die = src_die->GetSibling()) 5410 { 5411 if (src_die->Tag() == DW_TAG_subprogram) 5412 { 5413 // Make sure this is a declaration and not a concrete instance by looking 5414 // for DW_AT_declaration set to 1. Sometimes concrete function instances 5415 // are placed inside the class definitions and shouldn't be included in 5416 // the list of things are are tracking here. 5417 if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_declaration, 0) == 1) 5418 { 5419 const char *src_name = src_die->GetMangledName (src_symfile, src_cu); 5420 if (src_name) 5421 { 5422 ConstString src_const_name(src_name); 5423 if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_artificial, 0)) 5424 src_name_to_die_artificial.Append(src_const_name.GetCString(), src_die); 5425 else 5426 src_name_to_die.Append(src_const_name.GetCString(), src_die); 5427 } 5428 } 5429 } 5430 } 5431 for (dst_die = dst_class_die->GetFirstChild(); dst_die != NULL; dst_die = dst_die->GetSibling()) 5432 { 5433 if (dst_die->Tag() == DW_TAG_subprogram) 5434 { 5435 // Make sure this is a declaration and not a concrete instance by looking 5436 // for DW_AT_declaration set to 1. Sometimes concrete function instances 5437 // are placed inside the class definitions and shouldn't be included in 5438 // the list of things are are tracking here. 5439 if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_declaration, 0) == 1) 5440 { 5441 const char *dst_name = dst_die->GetMangledName (this, dst_cu); 5442 if (dst_name) 5443 { 5444 ConstString dst_const_name(dst_name); 5445 if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_artificial, 0)) 5446 dst_name_to_die_artificial.Append(dst_const_name.GetCString(), dst_die); 5447 else 5448 dst_name_to_die.Append(dst_const_name.GetCString(), dst_die); 5449 } 5450 } 5451 } 5452 } 5453 const uint32_t src_size = src_name_to_die.GetSize (); 5454 const uint32_t dst_size = dst_name_to_die.GetSize (); 5455 Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | DWARF_LOG_TYPE_COMPLETION)); 5456 5457 // Is everything kosher so we can go through the members at top speed? 5458 bool fast_path = true; 5459 5460 if (src_size != dst_size) 5461 { 5462 if (src_size != 0 && dst_size != 0) 5463 { 5464 if (log) 5465 log->Printf("warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, but they didn't have the same size (src=%d, dst=%d)", 5466 src_class_die->GetOffset(), 5467 dst_class_die->GetOffset(), 5468 src_size, 5469 dst_size); 5470 } 5471 5472 fast_path = false; 5473 } 5474 5475 uint32_t idx; 5476 5477 if (fast_path) 5478 { 5479 for (idx = 0; idx < src_size; ++idx) 5480 { 5481 src_die = src_name_to_die.GetValueAtIndexUnchecked (idx); 5482 dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx); 5483 5484 if (src_die->Tag() != dst_die->Tag()) 5485 { 5486 if (log) 5487 log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)", 5488 src_class_die->GetOffset(), 5489 dst_class_die->GetOffset(), 5490 src_die->GetOffset(), 5491 DW_TAG_value_to_name(src_die->Tag()), 5492 dst_die->GetOffset(), 5493 DW_TAG_value_to_name(src_die->Tag())); 5494 fast_path = false; 5495 } 5496 5497 const char *src_name = src_die->GetMangledName (src_symfile, src_cu); 5498 const char *dst_name = dst_die->GetMangledName (this, dst_cu); 5499 5500 // Make sure the names match 5501 if (src_name == dst_name || (strcmp (src_name, dst_name) == 0)) 5502 continue; 5503 5504 if (log) 5505 log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)", 5506 src_class_die->GetOffset(), 5507 dst_class_die->GetOffset(), 5508 src_die->GetOffset(), 5509 src_name, 5510 dst_die->GetOffset(), 5511 dst_name); 5512 5513 fast_path = false; 5514 } 5515 } 5516 5517 // Now do the work of linking the DeclContexts and Types. 5518 if (fast_path) 5519 { 5520 // We can do this quickly. Just run across the tables index-for-index since 5521 // we know each node has matching names and tags. 5522 for (idx = 0; idx < src_size; ++idx) 5523 { 5524 src_die = src_name_to_die.GetValueAtIndexUnchecked (idx); 5525 dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx); 5526 5527 clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die]; 5528 if (src_decl_ctx) 5529 { 5530 if (log) 5531 log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", src_decl_ctx, src_die->GetOffset(), dst_die->GetOffset()); 5532 LinkDeclContextToDIE (src_decl_ctx, dst_die); 5533 } 5534 else 5535 { 5536 if (log) 5537 log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset()); 5538 } 5539 5540 Type *src_child_type = m_die_to_type[src_die]; 5541 if (src_child_type) 5542 { 5543 if (log) 5544 log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", src_child_type, src_child_type->GetID(), src_die->GetOffset(), dst_die->GetOffset()); 5545 m_die_to_type[dst_die] = src_child_type; 5546 } 5547 else 5548 { 5549 if (log) 5550 log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset()); 5551 } 5552 } 5553 } 5554 else 5555 { 5556 // We must do this slowly. For each member of the destination, look 5557 // up a member in the source with the same name, check its tag, and 5558 // unique them if everything matches up. Report failures. 5559 5560 if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) 5561 { 5562 src_name_to_die.Sort(); 5563 5564 for (idx = 0; idx < dst_size; ++idx) 5565 { 5566 const char *dst_name = dst_name_to_die.GetCStringAtIndex(idx); 5567 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); 5568 src_die = src_name_to_die.Find(dst_name, NULL); 5569 5570 if (src_die && (src_die->Tag() == dst_die->Tag())) 5571 { 5572 clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die]; 5573 if (src_decl_ctx) 5574 { 5575 if (log) 5576 log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", src_decl_ctx, src_die->GetOffset(), dst_die->GetOffset()); 5577 LinkDeclContextToDIE (src_decl_ctx, dst_die); 5578 } 5579 else 5580 { 5581 if (log) 5582 log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset()); 5583 } 5584 5585 Type *src_child_type = m_die_to_type[src_die]; 5586 if (src_child_type) 5587 { 5588 if (log) 5589 log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", src_child_type, src_child_type->GetID(), src_die->GetOffset(), dst_die->GetOffset()); 5590 m_die_to_type[dst_die] = src_child_type; 5591 } 5592 else 5593 { 5594 if (log) 5595 log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset()); 5596 } 5597 } 5598 else 5599 { 5600 if (log) 5601 log->Printf ("warning: couldn't find a match for 0x%8.8x", dst_die->GetOffset()); 5602 5603 failures.push_back(dst_die); 5604 } 5605 } 5606 } 5607 } 5608 5609 const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize (); 5610 const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize (); 5611 5612 UniqueCStringMap<const DWARFDebugInfoEntry *> name_to_die_artificial_not_in_src; 5613 5614 if (src_size_artificial && dst_size_artificial) 5615 { 5616 dst_name_to_die_artificial.Sort(); 5617 5618 for (idx = 0; idx < src_size_artificial; ++idx) 5619 { 5620 const char *src_name_artificial = src_name_to_die_artificial.GetCStringAtIndex(idx); 5621 src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked (idx); 5622 dst_die = dst_name_to_die_artificial.Find(src_name_artificial, NULL); 5623 5624 if (dst_die) 5625 { 5626 // Both classes have the artificial types, link them 5627 clang::DeclContext *src_decl_ctx = m_die_to_decl_ctx[src_die]; 5628 if (src_decl_ctx) 5629 { 5630 if (log) 5631 log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", src_decl_ctx, src_die->GetOffset(), dst_die->GetOffset()); 5632 LinkDeclContextToDIE (src_decl_ctx, dst_die); 5633 } 5634 else 5635 { 5636 if (log) 5637 log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset()); 5638 } 5639 5640 Type *src_child_type = m_die_to_type[src_die]; 5641 if (src_child_type) 5642 { 5643 if (log) 5644 log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", src_child_type, src_child_type->GetID(), src_die->GetOffset(), dst_die->GetOffset()); 5645 m_die_to_type[dst_die] = src_child_type; 5646 } 5647 else 5648 { 5649 if (log) 5650 log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset()); 5651 } 5652 } 5653 } 5654 } 5655 5656 if (dst_size_artificial) 5657 { 5658 for (idx = 0; idx < dst_size_artificial; ++idx) 5659 { 5660 const char *dst_name_artificial = dst_name_to_die_artificial.GetCStringAtIndex(idx); 5661 dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked (idx); 5662 if (log) 5663 log->Printf ("warning: need to create artificial method for 0x%8.8x for method '%s'", dst_die->GetOffset(), dst_name_artificial); 5664 5665 failures.push_back(dst_die); 5666 } 5667 } 5668 5669 return (failures.size() != 0); 5670} 5671 5672TypeSP 5673SymbolFileDWARF::ParseType (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die, bool *type_is_new_ptr) 5674{ 5675 TypeSP type_sp; 5676 5677 if (type_is_new_ptr) 5678 *type_is_new_ptr = false; 5679 5680#if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE) 5681 static DIEStack g_die_stack; 5682 DIEStack::ScopedPopper scoped_die_logger(g_die_stack); 5683#endif 5684 5685 AccessType accessibility = eAccessNone; 5686 if (die != NULL) 5687 { 5688 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 5689 if (log) 5690 { 5691 const DWARFDebugInfoEntry *context_die; 5692 clang::DeclContext *context = GetClangDeclContextContainingDIE (dwarf_cu, die, &context_die); 5693 5694 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')", 5695 die->GetOffset(), 5696 context, 5697 context_die->GetOffset(), 5698 DW_TAG_value_to_name(die->Tag()), 5699 die->GetName(this, dwarf_cu)); 5700 5701#if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE) 5702 scoped_die_logger.Push (dwarf_cu, die); 5703 g_die_stack.LogDIEs(log, this); 5704#endif 5705 } 5706// 5707// Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 5708// if (log && dwarf_cu) 5709// { 5710// StreamString s; 5711// die->DumpLocation (this, dwarf_cu, s); 5712// GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData()); 5713// 5714// } 5715 5716 Type *type_ptr = m_die_to_type.lookup (die); 5717 TypeList* type_list = GetTypeList(); 5718 if (type_ptr == NULL) 5719 { 5720 ClangASTContext &ast = GetClangASTContext(); 5721 if (type_is_new_ptr) 5722 *type_is_new_ptr = true; 5723 5724 const dw_tag_t tag = die->Tag(); 5725 5726 bool is_forward_declaration = false; 5727 DWARFDebugInfoEntry::Attributes attributes; 5728 const char *type_name_cstr = NULL; 5729 ConstString type_name_const_str; 5730 Type::ResolveState resolve_state = Type::eResolveStateUnresolved; 5731 uint64_t byte_size = 0; 5732 Declaration decl; 5733 5734 Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID; 5735 ClangASTType clang_type; 5736 5737 dw_attr_t attr; 5738 5739 switch (tag) 5740 { 5741 case DW_TAG_base_type: 5742 case DW_TAG_pointer_type: 5743 case DW_TAG_reference_type: 5744 case DW_TAG_rvalue_reference_type: 5745 case DW_TAG_typedef: 5746 case DW_TAG_const_type: 5747 case DW_TAG_restrict_type: 5748 case DW_TAG_volatile_type: 5749 case DW_TAG_unspecified_type: 5750 { 5751 // Set a bit that lets us know that we are currently parsing this 5752 m_die_to_type[die] = DIE_IS_BEING_PARSED; 5753 5754 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 5755 uint32_t encoding = 0; 5756 lldb::user_id_t encoding_uid = LLDB_INVALID_UID; 5757 5758 if (num_attributes > 0) 5759 { 5760 uint32_t i; 5761 for (i=0; i<num_attributes; ++i) 5762 { 5763 attr = attributes.AttributeAtIndex(i); 5764 DWARFFormValue form_value; 5765 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 5766 { 5767 switch (attr) 5768 { 5769 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 5770 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 5771 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 5772 case DW_AT_name: 5773 5774 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 5775 // Work around a bug in llvm-gcc where they give a name to a reference type which doesn't 5776 // include the "&"... 5777 if (tag == DW_TAG_reference_type) 5778 { 5779 if (strchr (type_name_cstr, '&') == NULL) 5780 type_name_cstr = NULL; 5781 } 5782 if (type_name_cstr) 5783 type_name_const_str.SetCString(type_name_cstr); 5784 break; 5785 case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; 5786 case DW_AT_encoding: encoding = form_value.Unsigned(); break; 5787 case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break; 5788 default: 5789 case DW_AT_sibling: 5790 break; 5791 } 5792 } 5793 } 5794 } 5795 5796 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\") type => 0x%8.8lx\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr, encoding_uid); 5797 5798 switch (tag) 5799 { 5800 default: 5801 break; 5802 5803 case DW_TAG_unspecified_type: 5804 if (strcmp(type_name_cstr, "nullptr_t") == 0 || 5805 strcmp(type_name_cstr, "decltype(nullptr)") == 0 ) 5806 { 5807 resolve_state = Type::eResolveStateFull; 5808 clang_type = ast.GetBasicType(eBasicTypeNullPtr); 5809 break; 5810 } 5811 // Fall through to base type below in case we can handle the type there... 5812 5813 case DW_TAG_base_type: 5814 resolve_state = Type::eResolveStateFull; 5815 clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr, 5816 encoding, 5817 byte_size * 8); 5818 break; 5819 5820 case DW_TAG_pointer_type: encoding_data_type = Type::eEncodingIsPointerUID; break; 5821 case DW_TAG_reference_type: encoding_data_type = Type::eEncodingIsLValueReferenceUID; break; 5822 case DW_TAG_rvalue_reference_type: encoding_data_type = Type::eEncodingIsRValueReferenceUID; break; 5823 case DW_TAG_typedef: encoding_data_type = Type::eEncodingIsTypedefUID; break; 5824 case DW_TAG_const_type: encoding_data_type = Type::eEncodingIsConstUID; break; 5825 case DW_TAG_restrict_type: encoding_data_type = Type::eEncodingIsRestrictUID; break; 5826 case DW_TAG_volatile_type: encoding_data_type = Type::eEncodingIsVolatileUID; break; 5827 } 5828 5829 if (!clang_type && (encoding_data_type == Type::eEncodingIsPointerUID || encoding_data_type == Type::eEncodingIsTypedefUID) && sc.comp_unit != NULL) 5830 { 5831 bool translation_unit_is_objc = (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus); 5832 5833 if (translation_unit_is_objc) 5834 { 5835 if (type_name_cstr != NULL) 5836 { 5837 static ConstString g_objc_type_name_id("id"); 5838 static ConstString g_objc_type_name_Class("Class"); 5839 static ConstString g_objc_type_name_selector("SEL"); 5840 5841 if (type_name_const_str == g_objc_type_name_id) 5842 { 5843 if (log) 5844 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'id' built-in type.", 5845 die->GetOffset(), 5846 DW_TAG_value_to_name(die->Tag()), 5847 die->GetName(this, dwarf_cu)); 5848 clang_type = ast.GetBasicType(eBasicTypeObjCID); 5849 encoding_data_type = Type::eEncodingIsUID; 5850 encoding_uid = LLDB_INVALID_UID; 5851 resolve_state = Type::eResolveStateFull; 5852 5853 } 5854 else if (type_name_const_str == g_objc_type_name_Class) 5855 { 5856 if (log) 5857 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'Class' built-in type.", 5858 die->GetOffset(), 5859 DW_TAG_value_to_name(die->Tag()), 5860 die->GetName(this, dwarf_cu)); 5861 clang_type = ast.GetBasicType(eBasicTypeObjCClass); 5862 encoding_data_type = Type::eEncodingIsUID; 5863 encoding_uid = LLDB_INVALID_UID; 5864 resolve_state = Type::eResolveStateFull; 5865 } 5866 else if (type_name_const_str == g_objc_type_name_selector) 5867 { 5868 if (log) 5869 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'selector' built-in type.", 5870 die->GetOffset(), 5871 DW_TAG_value_to_name(die->Tag()), 5872 die->GetName(this, dwarf_cu)); 5873 clang_type = ast.GetBasicType(eBasicTypeObjCSel); 5874 encoding_data_type = Type::eEncodingIsUID; 5875 encoding_uid = LLDB_INVALID_UID; 5876 resolve_state = Type::eResolveStateFull; 5877 } 5878 } 5879 else if (encoding_data_type == Type::eEncodingIsPointerUID && encoding_uid != LLDB_INVALID_UID) 5880 { 5881 // Clang sometimes erroneously emits id as objc_object*. In that case we fix up the type to "id". 5882 5883 DWARFDebugInfoEntry* encoding_die = dwarf_cu->GetDIEPtr(encoding_uid); 5884 5885 if (encoding_die && encoding_die->Tag() == DW_TAG_structure_type) 5886 { 5887 if (const char *struct_name = encoding_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL)) 5888 { 5889 if (!strcmp(struct_name, "objc_object")) 5890 { 5891 if (log) 5892 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is 'objc_object*', which we overrode to 'id'.", 5893 die->GetOffset(), 5894 DW_TAG_value_to_name(die->Tag()), 5895 die->GetName(this, dwarf_cu)); 5896 clang_type = ast.GetBasicType(eBasicTypeObjCID); 5897 encoding_data_type = Type::eEncodingIsUID; 5898 encoding_uid = LLDB_INVALID_UID; 5899 resolve_state = Type::eResolveStateFull; 5900 } 5901 } 5902 } 5903 } 5904 } 5905 } 5906 5907 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 5908 this, 5909 type_name_const_str, 5910 byte_size, 5911 NULL, 5912 encoding_uid, 5913 encoding_data_type, 5914 &decl, 5915 clang_type, 5916 resolve_state)); 5917 5918 m_die_to_type[die] = type_sp.get(); 5919 5920// Type* encoding_type = GetUniquedTypeForDIEOffset(encoding_uid, type_sp, NULL, 0, 0, false); 5921// if (encoding_type != NULL) 5922// { 5923// if (encoding_type != DIE_IS_BEING_PARSED) 5924// type_sp->SetEncodingType(encoding_type); 5925// else 5926// m_indirect_fixups.push_back(type_sp.get()); 5927// } 5928 } 5929 break; 5930 5931 case DW_TAG_structure_type: 5932 case DW_TAG_union_type: 5933 case DW_TAG_class_type: 5934 { 5935 // Set a bit that lets us know that we are currently parsing this 5936 m_die_to_type[die] = DIE_IS_BEING_PARSED; 5937 bool byte_size_valid = false; 5938 5939 LanguageType class_language = eLanguageTypeUnknown; 5940 bool is_complete_objc_class = false; 5941 //bool struct_is_class = false; 5942 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 5943 if (num_attributes > 0) 5944 { 5945 uint32_t i; 5946 for (i=0; i<num_attributes; ++i) 5947 { 5948 attr = attributes.AttributeAtIndex(i); 5949 DWARFFormValue form_value; 5950 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 5951 { 5952 switch (attr) 5953 { 5954 case DW_AT_decl_file: 5955 if (dwarf_cu->DW_AT_decl_file_attributes_are_invalid()) 5956 { 5957 // llvm-gcc outputs invalid DW_AT_decl_file attributes that always 5958 // point to the compile unit file, so we clear this invalid value 5959 // so that we can still unique types efficiently. 5960 decl.SetFile(FileSpec ("<invalid>", false)); 5961 } 5962 else 5963 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); 5964 break; 5965 5966 case DW_AT_decl_line: 5967 decl.SetLine(form_value.Unsigned()); 5968 break; 5969 5970 case DW_AT_decl_column: 5971 decl.SetColumn(form_value.Unsigned()); 5972 break; 5973 5974 case DW_AT_name: 5975 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 5976 type_name_const_str.SetCString(type_name_cstr); 5977 break; 5978 5979 case DW_AT_byte_size: 5980 byte_size = form_value.Unsigned(); 5981 byte_size_valid = true; 5982 break; 5983 5984 case DW_AT_accessibility: 5985 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); 5986 break; 5987 5988 case DW_AT_declaration: 5989 is_forward_declaration = form_value.Boolean(); 5990 break; 5991 5992 case DW_AT_APPLE_runtime_class: 5993 class_language = (LanguageType)form_value.Signed(); 5994 break; 5995 5996 case DW_AT_APPLE_objc_complete_type: 5997 is_complete_objc_class = form_value.Signed(); 5998 break; 5999 6000 case DW_AT_allocated: 6001 case DW_AT_associated: 6002 case DW_AT_data_location: 6003 case DW_AT_description: 6004 case DW_AT_start_scope: 6005 case DW_AT_visibility: 6006 default: 6007 case DW_AT_sibling: 6008 break; 6009 } 6010 } 6011 } 6012 } 6013 6014 UniqueDWARFASTType unique_ast_entry; 6015 6016 // Only try and unique the type if it has a name. 6017 if (type_name_const_str && 6018 GetUniqueDWARFASTTypeMap().Find (type_name_const_str, 6019 this, 6020 dwarf_cu, 6021 die, 6022 decl, 6023 byte_size_valid ? byte_size : -1, 6024 unique_ast_entry)) 6025 { 6026 // We have already parsed this type or from another 6027 // compile unit. GCC loves to use the "one definition 6028 // rule" which can result in multiple definitions 6029 // of the same class over and over in each compile 6030 // unit. 6031 type_sp = unique_ast_entry.m_type_sp; 6032 if (type_sp) 6033 { 6034 m_die_to_type[die] = type_sp.get(); 6035 return type_sp; 6036 } 6037 } 6038 6039 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 6040 6041 int tag_decl_kind = -1; 6042 AccessType default_accessibility = eAccessNone; 6043 if (tag == DW_TAG_structure_type) 6044 { 6045 tag_decl_kind = clang::TTK_Struct; 6046 default_accessibility = eAccessPublic; 6047 } 6048 else if (tag == DW_TAG_union_type) 6049 { 6050 tag_decl_kind = clang::TTK_Union; 6051 default_accessibility = eAccessPublic; 6052 } 6053 else if (tag == DW_TAG_class_type) 6054 { 6055 tag_decl_kind = clang::TTK_Class; 6056 default_accessibility = eAccessPrivate; 6057 } 6058 6059 if (byte_size_valid && byte_size == 0 && type_name_cstr && 6060 die->HasChildren() == false && 6061 sc.comp_unit->GetLanguage() == eLanguageTypeObjC) 6062 { 6063 // Work around an issue with clang at the moment where 6064 // forward declarations for objective C classes are emitted 6065 // as: 6066 // DW_TAG_structure_type [2] 6067 // DW_AT_name( "ForwardObjcClass" ) 6068 // DW_AT_byte_size( 0x00 ) 6069 // DW_AT_decl_file( "..." ) 6070 // DW_AT_decl_line( 1 ) 6071 // 6072 // Note that there is no DW_AT_declaration and there are 6073 // no children, and the byte size is zero. 6074 is_forward_declaration = true; 6075 } 6076 6077 if (class_language == eLanguageTypeObjC || 6078 class_language == eLanguageTypeObjC_plus_plus) 6079 { 6080 if (!is_complete_objc_class && Supports_DW_AT_APPLE_objc_complete_type(dwarf_cu)) 6081 { 6082 // We have a valid eSymbolTypeObjCClass class symbol whose 6083 // name matches the current objective C class that we 6084 // are trying to find and this DIE isn't the complete 6085 // definition (we checked is_complete_objc_class above and 6086 // know it is false), so the real definition is in here somewhere 6087 type_sp = FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true); 6088 6089 if (!type_sp && GetDebugMapSymfile ()) 6090 { 6091 // We weren't able to find a full declaration in 6092 // this DWARF, see if we have a declaration anywhere 6093 // else... 6094 type_sp = m_debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true); 6095 } 6096 6097 if (type_sp) 6098 { 6099 if (log) 6100 { 6101 GetObjectFile()->GetModule()->LogMessage (log, 6102 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an incomplete objc type, complete type is 0x%8.8" PRIx64, 6103 this, 6104 die->GetOffset(), 6105 DW_TAG_value_to_name(tag), 6106 type_name_cstr, 6107 type_sp->GetID()); 6108 } 6109 6110 // We found a real definition for this type elsewhere 6111 // so lets use it and cache the fact that we found 6112 // a complete type for this die 6113 m_die_to_type[die] = type_sp.get(); 6114 return type_sp; 6115 } 6116 } 6117 } 6118 6119 6120 if (is_forward_declaration) 6121 { 6122 // We have a forward declaration to a type and we need 6123 // to try and find a full declaration. We look in the 6124 // current type index just in case we have a forward 6125 // declaration followed by an actual declarations in the 6126 // DWARF. If this fails, we need to look elsewhere... 6127 if (log) 6128 { 6129 GetObjectFile()->GetModule()->LogMessage (log, 6130 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, trying to find complete type", 6131 this, 6132 die->GetOffset(), 6133 DW_TAG_value_to_name(tag), 6134 type_name_cstr); 6135 } 6136 6137 DWARFDeclContext die_decl_ctx; 6138 die->GetDWARFDeclContext(this, dwarf_cu, die_decl_ctx); 6139 6140 //type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str); 6141 type_sp = FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); 6142 6143 if (!type_sp && GetDebugMapSymfile ()) 6144 { 6145 // We weren't able to find a full declaration in 6146 // this DWARF, see if we have a declaration anywhere 6147 // else... 6148 type_sp = m_debug_map_symfile->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); 6149 } 6150 6151 if (type_sp) 6152 { 6153 if (log) 6154 { 6155 GetObjectFile()->GetModule()->LogMessage (log, 6156 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, complete type is 0x%8.8" PRIx64, 6157 this, 6158 die->GetOffset(), 6159 DW_TAG_value_to_name(tag), 6160 type_name_cstr, 6161 type_sp->GetID()); 6162 } 6163 6164 // We found a real definition for this type elsewhere 6165 // so lets use it and cache the fact that we found 6166 // a complete type for this die 6167 m_die_to_type[die] = type_sp.get(); 6168 return type_sp; 6169 } 6170 } 6171 assert (tag_decl_kind != -1); 6172 bool clang_type_was_created = false; 6173 clang_type.SetClangType(ast.getASTContext(), m_forward_decl_die_to_clang_type.lookup (die)); 6174 if (!clang_type) 6175 { 6176 const DWARFDebugInfoEntry *decl_ctx_die; 6177 6178 clang::DeclContext *decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die); 6179 if (accessibility == eAccessNone && decl_ctx) 6180 { 6181 // Check the decl context that contains this class/struct/union. 6182 // If it is a class we must give it an accessability. 6183 const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind(); 6184 if (DeclKindIsCXXClass (containing_decl_kind)) 6185 accessibility = default_accessibility; 6186 } 6187 6188 ClangASTMetadata metadata; 6189 metadata.SetUserID(MakeUserID(die->GetOffset())); 6190 metadata.SetIsDynamicCXXType(ClassOrStructIsVirtual (dwarf_cu, die)); 6191 6192 if (type_name_cstr && strchr (type_name_cstr, '<')) 6193 { 6194 ClangASTContext::TemplateParameterInfos template_param_infos; 6195 if (ParseTemplateParameterInfos (dwarf_cu, die, template_param_infos)) 6196 { 6197 clang::ClassTemplateDecl *class_template_decl = ParseClassTemplateDecl (decl_ctx, 6198 accessibility, 6199 type_name_cstr, 6200 tag_decl_kind, 6201 template_param_infos); 6202 6203 clang::ClassTemplateSpecializationDecl *class_specialization_decl = ast.CreateClassTemplateSpecializationDecl (decl_ctx, 6204 class_template_decl, 6205 tag_decl_kind, 6206 template_param_infos); 6207 clang_type = ast.CreateClassTemplateSpecializationType (class_specialization_decl); 6208 clang_type_was_created = true; 6209 6210 GetClangASTContext().SetMetadata (class_template_decl, metadata); 6211 GetClangASTContext().SetMetadata (class_specialization_decl, metadata); 6212 } 6213 } 6214 6215 if (!clang_type_was_created) 6216 { 6217 clang_type_was_created = true; 6218 clang_type = ast.CreateRecordType (decl_ctx, 6219 accessibility, 6220 type_name_cstr, 6221 tag_decl_kind, 6222 class_language, 6223 &metadata); 6224 } 6225 } 6226 6227 // Store a forward declaration to this class type in case any 6228 // parameters in any class methods need it for the clang 6229 // types for function prototypes. 6230 LinkDeclContextToDIE(clang_type.GetDeclContextForType(), die); 6231 type_sp.reset (new Type (MakeUserID(die->GetOffset()), 6232 this, 6233 type_name_const_str, 6234 byte_size, 6235 NULL, 6236 LLDB_INVALID_UID, 6237 Type::eEncodingIsUID, 6238 &decl, 6239 clang_type, 6240 Type::eResolveStateForward)); 6241 6242 type_sp->SetIsCompleteObjCClass(is_complete_objc_class); 6243 6244 6245 // Add our type to the unique type map so we don't 6246 // end up creating many copies of the same type over 6247 // and over in the ASTContext for our module 6248 unique_ast_entry.m_type_sp = type_sp; 6249 unique_ast_entry.m_symfile = this; 6250 unique_ast_entry.m_cu = dwarf_cu; 6251 unique_ast_entry.m_die = die; 6252 unique_ast_entry.m_declaration = decl; 6253 unique_ast_entry.m_byte_size = byte_size; 6254 GetUniqueDWARFASTTypeMap().Insert (type_name_const_str, 6255 unique_ast_entry); 6256 6257 if (is_forward_declaration && die->HasChildren()) 6258 { 6259 // Check to see if the DIE actually has a definition, some version of GCC will 6260 // emit DIEs with DW_AT_declaration set to true, but yet still have subprogram, 6261 // members, or inheritance, so we can't trust it 6262 const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); 6263 while (child_die) 6264 { 6265 switch (child_die->Tag()) 6266 { 6267 case DW_TAG_inheritance: 6268 case DW_TAG_subprogram: 6269 case DW_TAG_member: 6270 case DW_TAG_APPLE_property: 6271 case DW_TAG_class_type: 6272 case DW_TAG_structure_type: 6273 case DW_TAG_enumeration_type: 6274 case DW_TAG_typedef: 6275 case DW_TAG_union_type: 6276 child_die = NULL; 6277 is_forward_declaration = false; 6278 break; 6279 default: 6280 child_die = child_die->GetSibling(); 6281 break; 6282 } 6283 } 6284 } 6285 6286 if (!is_forward_declaration) 6287 { 6288 // Always start the definition for a class type so that 6289 // if the class has child classes or types that require 6290 // the class to be created for use as their decl contexts 6291 // the class will be ready to accept these child definitions. 6292 if (die->HasChildren() == false) 6293 { 6294 // No children for this struct/union/class, lets finish it 6295 clang_type.StartTagDeclarationDefinition (); 6296 clang_type.CompleteTagDeclarationDefinition (); 6297 6298 if (tag == DW_TAG_structure_type) // this only applies in C 6299 { 6300 clang::RecordDecl *record_decl = clang_type.GetAsRecordDecl(); 6301 6302 if (record_decl) 6303 { 6304 LayoutInfo layout_info; 6305 6306 layout_info.alignment = 0; 6307 layout_info.bit_size = 0; 6308 6309 m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info)); 6310 } 6311 } 6312 } 6313 else if (clang_type_was_created) 6314 { 6315 // Start the definition if the class is not objective C since 6316 // the underlying decls respond to isCompleteDefinition(). Objective 6317 // C decls dont' respond to isCompleteDefinition() so we can't 6318 // start the declaration definition right away. For C++ classs/union/structs 6319 // we want to start the definition in case the class is needed as the 6320 // declaration context for a contained class or type without the need 6321 // to complete that type.. 6322 6323 if (class_language != eLanguageTypeObjC && 6324 class_language != eLanguageTypeObjC_plus_plus) 6325 clang_type.StartTagDeclarationDefinition (); 6326 6327 // Leave this as a forward declaration until we need 6328 // to know the details of the type. lldb_private::Type 6329 // will automatically call the SymbolFile virtual function 6330 // "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition(Type *)" 6331 // When the definition needs to be defined. 6332 m_forward_decl_die_to_clang_type[die] = clang_type.GetOpaqueQualType(); 6333 m_forward_decl_clang_type_to_die[clang_type.RemoveFastQualifiers().GetOpaqueQualType()] = die; 6334 clang_type.SetHasExternalStorage (true); 6335 } 6336 } 6337 6338 } 6339 break; 6340 6341 case DW_TAG_enumeration_type: 6342 { 6343 // Set a bit that lets us know that we are currently parsing this 6344 m_die_to_type[die] = DIE_IS_BEING_PARSED; 6345 6346 lldb::user_id_t encoding_uid = DW_INVALID_OFFSET; 6347 6348 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 6349 if (num_attributes > 0) 6350 { 6351 uint32_t i; 6352 6353 for (i=0; i<num_attributes; ++i) 6354 { 6355 attr = attributes.AttributeAtIndex(i); 6356 DWARFFormValue form_value; 6357 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 6358 { 6359 switch (attr) 6360 { 6361 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 6362 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 6363 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 6364 case DW_AT_name: 6365 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 6366 type_name_const_str.SetCString(type_name_cstr); 6367 break; 6368 case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break; 6369 case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; 6370 case DW_AT_accessibility: break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 6371 case DW_AT_declaration: break; //is_forward_declaration = form_value.Boolean(); break; 6372 case DW_AT_allocated: 6373 case DW_AT_associated: 6374 case DW_AT_bit_stride: 6375 case DW_AT_byte_stride: 6376 case DW_AT_data_location: 6377 case DW_AT_description: 6378 case DW_AT_start_scope: 6379 case DW_AT_visibility: 6380 case DW_AT_specification: 6381 case DW_AT_abstract_origin: 6382 case DW_AT_sibling: 6383 break; 6384 } 6385 } 6386 } 6387 6388 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 6389 6390 ClangASTType enumerator_clang_type; 6391 clang_type.SetClangType (ast.getASTContext(), m_forward_decl_die_to_clang_type.lookup (die)); 6392 if (!clang_type) 6393 { 6394 if (encoding_uid != DW_INVALID_OFFSET) 6395 { 6396 Type *enumerator_type = ResolveTypeUID(encoding_uid); 6397 if (enumerator_type) 6398 enumerator_clang_type = enumerator_type->GetClangFullType(); 6399 } 6400 6401 if (!enumerator_clang_type) 6402 enumerator_clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (NULL, 6403 DW_ATE_signed, 6404 byte_size * 8); 6405 6406 clang_type = ast.CreateEnumerationType (type_name_cstr, 6407 GetClangDeclContextContainingDIE (dwarf_cu, die, NULL), 6408 decl, 6409 enumerator_clang_type); 6410 } 6411 else 6412 { 6413 enumerator_clang_type = clang_type.GetEnumerationIntegerType (); 6414 } 6415 6416 LinkDeclContextToDIE(clang_type.GetDeclContextForType(), die); 6417 6418 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 6419 this, 6420 type_name_const_str, 6421 byte_size, 6422 NULL, 6423 encoding_uid, 6424 Type::eEncodingIsUID, 6425 &decl, 6426 clang_type, 6427 Type::eResolveStateForward)); 6428 6429 clang_type.StartTagDeclarationDefinition (); 6430 if (die->HasChildren()) 6431 { 6432 SymbolContext cu_sc(GetCompUnitForDWARFCompUnit(dwarf_cu)); 6433 bool is_signed = false; 6434 enumerator_clang_type.IsIntegerType(is_signed); 6435 ParseChildEnumerators(cu_sc, clang_type, is_signed, type_sp->GetByteSize(), dwarf_cu, die); 6436 } 6437 clang_type.CompleteTagDeclarationDefinition (); 6438 } 6439 } 6440 break; 6441 6442 case DW_TAG_inlined_subroutine: 6443 case DW_TAG_subprogram: 6444 case DW_TAG_subroutine_type: 6445 { 6446 // Set a bit that lets us know that we are currently parsing this 6447 m_die_to_type[die] = DIE_IS_BEING_PARSED; 6448 6449 //const char *mangled = NULL; 6450 dw_offset_t type_die_offset = DW_INVALID_OFFSET; 6451 bool is_variadic = false; 6452 bool is_inline = false; 6453 bool is_static = false; 6454 bool is_virtual = false; 6455 bool is_explicit = false; 6456 bool is_artificial = false; 6457 dw_offset_t specification_die_offset = DW_INVALID_OFFSET; 6458 dw_offset_t abstract_origin_die_offset = DW_INVALID_OFFSET; 6459 dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET; 6460 6461 unsigned type_quals = 0; 6462 clang::StorageClass storage = clang::SC_None;//, Extern, Static, PrivateExtern 6463 6464 6465 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 6466 if (num_attributes > 0) 6467 { 6468 uint32_t i; 6469 for (i=0; i<num_attributes; ++i) 6470 { 6471 attr = attributes.AttributeAtIndex(i); 6472 DWARFFormValue form_value; 6473 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 6474 { 6475 switch (attr) 6476 { 6477 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 6478 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 6479 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 6480 case DW_AT_name: 6481 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 6482 type_name_const_str.SetCString(type_name_cstr); 6483 break; 6484 6485 case DW_AT_linkage_name: 6486 case DW_AT_MIPS_linkage_name: break; // mangled = form_value.AsCString(&get_debug_str_data()); break; 6487 case DW_AT_type: type_die_offset = form_value.Reference(dwarf_cu); break; 6488 case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 6489 case DW_AT_declaration: break; // is_forward_declaration = form_value.Boolean(); break; 6490 case DW_AT_inline: is_inline = form_value.Boolean(); break; 6491 case DW_AT_virtuality: is_virtual = form_value.Boolean(); break; 6492 case DW_AT_explicit: is_explicit = form_value.Boolean(); break; 6493 case DW_AT_artificial: is_artificial = form_value.Boolean(); break; 6494 6495 6496 case DW_AT_external: 6497 if (form_value.Unsigned()) 6498 { 6499 if (storage == clang::SC_None) 6500 storage = clang::SC_Extern; 6501 else 6502 storage = clang::SC_PrivateExtern; 6503 } 6504 break; 6505 6506 case DW_AT_specification: 6507 specification_die_offset = form_value.Reference(dwarf_cu); 6508 break; 6509 6510 case DW_AT_abstract_origin: 6511 abstract_origin_die_offset = form_value.Reference(dwarf_cu); 6512 break; 6513 6514 case DW_AT_object_pointer: 6515 object_pointer_die_offset = form_value.Reference(dwarf_cu); 6516 break; 6517 6518 case DW_AT_allocated: 6519 case DW_AT_associated: 6520 case DW_AT_address_class: 6521 case DW_AT_calling_convention: 6522 case DW_AT_data_location: 6523 case DW_AT_elemental: 6524 case DW_AT_entry_pc: 6525 case DW_AT_frame_base: 6526 case DW_AT_high_pc: 6527 case DW_AT_low_pc: 6528 case DW_AT_prototyped: 6529 case DW_AT_pure: 6530 case DW_AT_ranges: 6531 case DW_AT_recursive: 6532 case DW_AT_return_addr: 6533 case DW_AT_segment: 6534 case DW_AT_start_scope: 6535 case DW_AT_static_link: 6536 case DW_AT_trampoline: 6537 case DW_AT_visibility: 6538 case DW_AT_vtable_elem_location: 6539 case DW_AT_description: 6540 case DW_AT_sibling: 6541 break; 6542 } 6543 } 6544 } 6545 } 6546 6547 std::string object_pointer_name; 6548 if (object_pointer_die_offset != DW_INVALID_OFFSET) 6549 { 6550 // Get the name from the object pointer die 6551 StreamString s; 6552 if (DWARFDebugInfoEntry::GetName (this, dwarf_cu, object_pointer_die_offset, s)) 6553 { 6554 object_pointer_name.assign(s.GetData()); 6555 } 6556 } 6557 6558 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 6559 6560 ClangASTType return_clang_type; 6561 Type *func_type = NULL; 6562 6563 if (type_die_offset != DW_INVALID_OFFSET) 6564 func_type = ResolveTypeUID(type_die_offset); 6565 6566 if (func_type) 6567 return_clang_type = func_type->GetClangForwardType(); 6568 else 6569 return_clang_type = ast.GetBasicType(eBasicTypeVoid); 6570 6571 6572 std::vector<ClangASTType> function_param_types; 6573 std::vector<clang::ParmVarDecl*> function_param_decls; 6574 6575 // Parse the function children for the parameters 6576 6577 const DWARFDebugInfoEntry *decl_ctx_die = NULL; 6578 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die); 6579 const clang::Decl::Kind containing_decl_kind = containing_decl_ctx->getDeclKind(); 6580 6581 const bool is_cxx_method = DeclKindIsCXXClass (containing_decl_kind); 6582 // Start off static. This will be set to false in ParseChildParameters(...) 6583 // if we find a "this" paramters as the first parameter 6584 if (is_cxx_method) 6585 is_static = true; 6586 ClangASTContext::TemplateParameterInfos template_param_infos; 6587 6588 if (die->HasChildren()) 6589 { 6590 bool skip_artificial = true; 6591 ParseChildParameters (sc, 6592 containing_decl_ctx, 6593 dwarf_cu, 6594 die, 6595 skip_artificial, 6596 is_static, 6597 is_variadic, 6598 type_list, 6599 function_param_types, 6600 function_param_decls, 6601 type_quals, 6602 template_param_infos); 6603 } 6604 6605 // clang_type will get the function prototype clang type after this call 6606 clang_type = ast.CreateFunctionType (return_clang_type, 6607 function_param_types.data(), 6608 function_param_types.size(), 6609 is_variadic, 6610 type_quals); 6611 6612 bool ignore_containing_context = false; 6613 6614 if (type_name_cstr) 6615 { 6616 bool type_handled = false; 6617 if (tag == DW_TAG_subprogram) 6618 { 6619 ObjCLanguageRuntime::MethodName objc_method (type_name_cstr, true); 6620 if (objc_method.IsValid(true)) 6621 { 6622 SymbolContext empty_sc; 6623 ClangASTType class_opaque_type; 6624 ConstString class_name(objc_method.GetClassName()); 6625 if (class_name) 6626 { 6627 TypeList types; 6628 TypeSP complete_objc_class_type_sp (FindCompleteObjCDefinitionTypeForDIE (NULL, class_name, false)); 6629 6630 if (complete_objc_class_type_sp) 6631 { 6632 ClangASTType type_clang_forward_type = complete_objc_class_type_sp->GetClangForwardType(); 6633 if (type_clang_forward_type.IsObjCObjectOrInterfaceType ()) 6634 class_opaque_type = type_clang_forward_type; 6635 } 6636 } 6637 6638 if (class_opaque_type) 6639 { 6640 // If accessibility isn't set to anything valid, assume public for 6641 // now... 6642 if (accessibility == eAccessNone) 6643 accessibility = eAccessPublic; 6644 6645 clang::ObjCMethodDecl *objc_method_decl = class_opaque_type.AddMethodToObjCObjectType (type_name_cstr, 6646 clang_type, 6647 accessibility, 6648 is_artificial); 6649 type_handled = objc_method_decl != NULL; 6650 if (type_handled) 6651 { 6652 LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(objc_method_decl), die); 6653 GetClangASTContext().SetMetadataAsUserID (objc_method_decl, MakeUserID(die->GetOffset())); 6654 } 6655 else 6656 { 6657 GetObjectFile()->GetModule()->ReportError ("{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), please file a bug and attach the file at the start of this error message", 6658 die->GetOffset(), 6659 tag, 6660 DW_TAG_value_to_name(tag)); 6661 } 6662 } 6663 } 6664 else if (is_cxx_method) 6665 { 6666 // Look at the parent of this DIE and see if is is 6667 // a class or struct and see if this is actually a 6668 // C++ method 6669 Type *class_type = ResolveType (dwarf_cu, decl_ctx_die); 6670 if (class_type) 6671 { 6672 if (class_type->GetID() != MakeUserID(decl_ctx_die->GetOffset())) 6673 { 6674 // We uniqued the parent class of this function to another class 6675 // so we now need to associate all dies under "decl_ctx_die" to 6676 // DIEs in the DIE for "class_type"... 6677 SymbolFileDWARF *class_symfile = NULL; 6678 DWARFCompileUnitSP class_type_cu_sp; 6679 const DWARFDebugInfoEntry *class_type_die = NULL; 6680 6681 SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile(); 6682 if (debug_map_symfile) 6683 { 6684 class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex(SymbolFileDWARFDebugMap::GetOSOIndexFromUserID(class_type->GetID())); 6685 class_type_die = class_symfile->DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp); 6686 } 6687 else 6688 { 6689 class_symfile = this; 6690 class_type_die = DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp); 6691 } 6692 if (class_type_die) 6693 { 6694 llvm::SmallVector<const DWARFDebugInfoEntry *, 0> failures; 6695 6696 CopyUniqueClassMethodTypes (class_symfile, 6697 class_type, 6698 class_type_cu_sp.get(), 6699 class_type_die, 6700 dwarf_cu, 6701 decl_ctx_die, 6702 failures); 6703 6704 // FIXME do something with these failures that's smarter than 6705 // just dropping them on the ground. Unfortunately classes don't 6706 // like having stuff added to them after their definitions are 6707 // complete... 6708 6709 type_ptr = m_die_to_type[die]; 6710 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) 6711 { 6712 type_sp = type_ptr->shared_from_this(); 6713 break; 6714 } 6715 } 6716 } 6717 6718 if (specification_die_offset != DW_INVALID_OFFSET) 6719 { 6720 // We have a specification which we are going to base our function 6721 // prototype off of, so we need this type to be completed so that the 6722 // m_die_to_decl_ctx for the method in the specification has a valid 6723 // clang decl context. 6724 class_type->GetClangForwardType(); 6725 // If we have a specification, then the function type should have been 6726 // made with the specification and not with this die. 6727 DWARFCompileUnitSP spec_cu_sp; 6728 const DWARFDebugInfoEntry* spec_die = DebugInfo()->GetDIEPtr(specification_die_offset, &spec_cu_sp); 6729 clang::DeclContext *spec_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, spec_die); 6730 if (spec_clang_decl_ctx) 6731 { 6732 LinkDeclContextToDIE(spec_clang_decl_ctx, die); 6733 } 6734 else 6735 { 6736 GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_specification(0x%8.8x) has no decl\n", 6737 MakeUserID(die->GetOffset()), 6738 specification_die_offset); 6739 } 6740 type_handled = true; 6741 } 6742 else if (abstract_origin_die_offset != DW_INVALID_OFFSET) 6743 { 6744 // We have a specification which we are going to base our function 6745 // prototype off of, so we need this type to be completed so that the 6746 // m_die_to_decl_ctx for the method in the abstract origin has a valid 6747 // clang decl context. 6748 class_type->GetClangForwardType(); 6749 6750 DWARFCompileUnitSP abs_cu_sp; 6751 const DWARFDebugInfoEntry* abs_die = DebugInfo()->GetDIEPtr(abstract_origin_die_offset, &abs_cu_sp); 6752 clang::DeclContext *abs_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, abs_die); 6753 if (abs_clang_decl_ctx) 6754 { 6755 LinkDeclContextToDIE (abs_clang_decl_ctx, die); 6756 } 6757 else 6758 { 6759 GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_abstract_origin(0x%8.8x) has no decl\n", 6760 MakeUserID(die->GetOffset()), 6761 abstract_origin_die_offset); 6762 } 6763 type_handled = true; 6764 } 6765 else 6766 { 6767 ClangASTType class_opaque_type = class_type->GetClangForwardType(); 6768 if (class_opaque_type.IsCXXClassType ()) 6769 { 6770 if (class_opaque_type.IsBeingDefined ()) 6771 { 6772 // Neither GCC 4.2 nor clang++ currently set a valid accessibility 6773 // in the DWARF for C++ methods... Default to public for now... 6774 if (accessibility == eAccessNone) 6775 accessibility = eAccessPublic; 6776 6777 if (!is_static && !die->HasChildren()) 6778 { 6779 // We have a C++ member function with no children (this pointer!) 6780 // and clang will get mad if we try and make a function that isn't 6781 // well formed in the DWARF, so we will just skip it... 6782 type_handled = true; 6783 } 6784 else 6785 { 6786 clang::CXXMethodDecl *cxx_method_decl; 6787 // REMOVE THE CRASH DESCRIPTION BELOW 6788 Host::SetCrashDescriptionWithFormat ("SymbolFileDWARF::ParseType() is adding a method %s to class %s in DIE 0x%8.8" PRIx64 " from %s", 6789 type_name_cstr, 6790 class_type->GetName().GetCString(), 6791 MakeUserID(die->GetOffset()), 6792 m_obj_file->GetFileSpec().GetPath().c_str()); 6793 6794 const bool is_attr_used = false; 6795 6796 cxx_method_decl = class_opaque_type.AddMethodToCXXRecordType (type_name_cstr, 6797 clang_type, 6798 accessibility, 6799 is_virtual, 6800 is_static, 6801 is_inline, 6802 is_explicit, 6803 is_attr_used, 6804 is_artificial); 6805 6806 type_handled = cxx_method_decl != NULL; 6807 6808 if (type_handled) 6809 { 6810 LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(cxx_method_decl), die); 6811 6812 Host::SetCrashDescription (NULL); 6813 6814 6815 ClangASTMetadata metadata; 6816 metadata.SetUserID(MakeUserID(die->GetOffset())); 6817 6818 if (!object_pointer_name.empty()) 6819 { 6820 metadata.SetObjectPtrName(object_pointer_name.c_str()); 6821 if (log) 6822 log->Printf ("Setting object pointer name: %s on method object %p.\n", 6823 object_pointer_name.c_str(), 6824 cxx_method_decl); 6825 } 6826 GetClangASTContext().SetMetadata (cxx_method_decl, metadata); 6827 } 6828 else 6829 { 6830 ignore_containing_context = true; 6831 } 6832 } 6833 } 6834 else 6835 { 6836 // We were asked to parse the type for a method in a class, yet the 6837 // class hasn't been asked to complete itself through the 6838 // clang::ExternalASTSource protocol, so we need to just have the 6839 // class complete itself and do things the right way, then our 6840 // DIE should then have an entry in the m_die_to_type map. First 6841 // we need to modify the m_die_to_type so it doesn't think we are 6842 // trying to parse this DIE anymore... 6843 m_die_to_type[die] = NULL; 6844 6845 // Now we get the full type to force our class type to complete itself 6846 // using the clang::ExternalASTSource protocol which will parse all 6847 // base classes and all methods (including the method for this DIE). 6848 class_type->GetClangFullType(); 6849 6850 // The type for this DIE should have been filled in the function call above 6851 type_ptr = m_die_to_type[die]; 6852 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) 6853 { 6854 type_sp = type_ptr->shared_from_this(); 6855 break; 6856 } 6857 6858 // FIXME This is fixing some even uglier behavior but we really need to 6859 // uniq the methods of each class as well as the class itself. 6860 // <rdar://problem/11240464> 6861 type_handled = true; 6862 } 6863 } 6864 } 6865 } 6866 } 6867 } 6868 6869 if (!type_handled) 6870 { 6871 // We just have a function that isn't part of a class 6872 clang::FunctionDecl *function_decl = ast.CreateFunctionDeclaration (ignore_containing_context ? GetClangASTContext().GetTranslationUnitDecl() : containing_decl_ctx, 6873 type_name_cstr, 6874 clang_type, 6875 storage, 6876 is_inline); 6877 6878// if (template_param_infos.GetSize() > 0) 6879// { 6880// clang::FunctionTemplateDecl *func_template_decl = ast.CreateFunctionTemplateDecl (containing_decl_ctx, 6881// function_decl, 6882// type_name_cstr, 6883// template_param_infos); 6884// 6885// ast.CreateFunctionTemplateSpecializationInfo (function_decl, 6886// func_template_decl, 6887// template_param_infos); 6888// } 6889 // Add the decl to our DIE to decl context map 6890 assert (function_decl); 6891 LinkDeclContextToDIE(function_decl, die); 6892 if (!function_param_decls.empty()) 6893 ast.SetFunctionParameters (function_decl, 6894 &function_param_decls.front(), 6895 function_param_decls.size()); 6896 6897 ClangASTMetadata metadata; 6898 metadata.SetUserID(MakeUserID(die->GetOffset())); 6899 6900 if (!object_pointer_name.empty()) 6901 { 6902 metadata.SetObjectPtrName(object_pointer_name.c_str()); 6903 if (log) 6904 log->Printf ("Setting object pointer name: %s on function object %p.", 6905 object_pointer_name.c_str(), 6906 function_decl); 6907 } 6908 GetClangASTContext().SetMetadata (function_decl, metadata); 6909 } 6910 } 6911 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 6912 this, 6913 type_name_const_str, 6914 0, 6915 NULL, 6916 LLDB_INVALID_UID, 6917 Type::eEncodingIsUID, 6918 &decl, 6919 clang_type, 6920 Type::eResolveStateFull)); 6921 assert(type_sp.get()); 6922 } 6923 break; 6924 6925 case DW_TAG_array_type: 6926 { 6927 // Set a bit that lets us know that we are currently parsing this 6928 m_die_to_type[die] = DIE_IS_BEING_PARSED; 6929 6930 lldb::user_id_t type_die_offset = DW_INVALID_OFFSET; 6931 int64_t first_index = 0; 6932 uint32_t byte_stride = 0; 6933 uint32_t bit_stride = 0; 6934 bool is_vector = false; 6935 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 6936 6937 if (num_attributes > 0) 6938 { 6939 uint32_t i; 6940 for (i=0; i<num_attributes; ++i) 6941 { 6942 attr = attributes.AttributeAtIndex(i); 6943 DWARFFormValue form_value; 6944 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 6945 { 6946 switch (attr) 6947 { 6948 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 6949 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 6950 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 6951 case DW_AT_name: 6952 type_name_cstr = form_value.AsCString(&get_debug_str_data()); 6953 type_name_const_str.SetCString(type_name_cstr); 6954 break; 6955 6956 case DW_AT_type: type_die_offset = form_value.Reference(dwarf_cu); break; 6957 case DW_AT_byte_size: break; // byte_size = form_value.Unsigned(); break; 6958 case DW_AT_byte_stride: byte_stride = form_value.Unsigned(); break; 6959 case DW_AT_bit_stride: bit_stride = form_value.Unsigned(); break; 6960 case DW_AT_GNU_vector: is_vector = form_value.Boolean(); break; 6961 case DW_AT_accessibility: break; // accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 6962 case DW_AT_declaration: break; // is_forward_declaration = form_value.Boolean(); break; 6963 case DW_AT_allocated: 6964 case DW_AT_associated: 6965 case DW_AT_data_location: 6966 case DW_AT_description: 6967 case DW_AT_ordering: 6968 case DW_AT_start_scope: 6969 case DW_AT_visibility: 6970 case DW_AT_specification: 6971 case DW_AT_abstract_origin: 6972 case DW_AT_sibling: 6973 break; 6974 } 6975 } 6976 } 6977 6978 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); 6979 6980 Type *element_type = ResolveTypeUID(type_die_offset); 6981 6982 if (element_type) 6983 { 6984 std::vector<uint64_t> element_orders; 6985 ParseChildArrayInfo(sc, dwarf_cu, die, first_index, element_orders, byte_stride, bit_stride); 6986 if (byte_stride == 0 && bit_stride == 0) 6987 byte_stride = element_type->GetByteSize(); 6988 ClangASTType array_element_type = element_type->GetClangForwardType(); 6989 uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride; 6990 uint64_t num_elements = 0; 6991 std::vector<uint64_t>::const_reverse_iterator pos; 6992 std::vector<uint64_t>::const_reverse_iterator end = element_orders.rend(); 6993 for (pos = element_orders.rbegin(); pos != end; ++pos) 6994 { 6995 num_elements = *pos; 6996 clang_type = ast.CreateArrayType (array_element_type, 6997 num_elements, 6998 is_vector); 6999 array_element_type = clang_type; 7000 array_element_bit_stride = num_elements ? array_element_bit_stride * num_elements : array_element_bit_stride; 7001 } 7002 ConstString empty_name; 7003 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 7004 this, 7005 empty_name, 7006 array_element_bit_stride / 8, 7007 NULL, 7008 type_die_offset, 7009 Type::eEncodingIsUID, 7010 &decl, 7011 clang_type, 7012 Type::eResolveStateFull)); 7013 type_sp->SetEncodingType (element_type); 7014 } 7015 } 7016 } 7017 break; 7018 7019 case DW_TAG_ptr_to_member_type: 7020 { 7021 dw_offset_t type_die_offset = DW_INVALID_OFFSET; 7022 dw_offset_t containing_type_die_offset = DW_INVALID_OFFSET; 7023 7024 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 7025 7026 if (num_attributes > 0) { 7027 uint32_t i; 7028 for (i=0; i<num_attributes; ++i) 7029 { 7030 attr = attributes.AttributeAtIndex(i); 7031 DWARFFormValue form_value; 7032 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 7033 { 7034 switch (attr) 7035 { 7036 case DW_AT_type: 7037 type_die_offset = form_value.Reference(dwarf_cu); break; 7038 case DW_AT_containing_type: 7039 containing_type_die_offset = form_value.Reference(dwarf_cu); break; 7040 } 7041 } 7042 } 7043 7044 Type *pointee_type = ResolveTypeUID(type_die_offset); 7045 Type *class_type = ResolveTypeUID(containing_type_die_offset); 7046 7047 ClangASTType pointee_clang_type = pointee_type->GetClangForwardType(); 7048 ClangASTType class_clang_type = class_type->GetClangLayoutType(); 7049 7050 clang_type = pointee_clang_type.CreateMemberPointerType(class_clang_type); 7051 7052 byte_size = clang_type.GetByteSize(); 7053 7054 type_sp.reset( new Type (MakeUserID(die->GetOffset()), 7055 this, 7056 type_name_const_str, 7057 byte_size, 7058 NULL, 7059 LLDB_INVALID_UID, 7060 Type::eEncodingIsUID, 7061 NULL, 7062 clang_type, 7063 Type::eResolveStateForward)); 7064 } 7065 7066 break; 7067 } 7068 default: 7069 GetObjectFile()->GetModule()->ReportError ("{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and attach the file at the start of this error message", 7070 die->GetOffset(), 7071 tag, 7072 DW_TAG_value_to_name(tag)); 7073 break; 7074 } 7075 7076 if (type_sp.get()) 7077 { 7078 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die); 7079 dw_tag_t sc_parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; 7080 7081 SymbolContextScope * symbol_context_scope = NULL; 7082 if (sc_parent_tag == DW_TAG_compile_unit) 7083 { 7084 symbol_context_scope = sc.comp_unit; 7085 } 7086 else if (sc.function != NULL) 7087 { 7088 symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); 7089 if (symbol_context_scope == NULL) 7090 symbol_context_scope = sc.function; 7091 } 7092 7093 if (symbol_context_scope != NULL) 7094 { 7095 type_sp->SetSymbolContextScope(symbol_context_scope); 7096 } 7097 7098 // We are ready to put this type into the uniqued list up at the module level 7099 type_list->Insert (type_sp); 7100 7101 m_die_to_type[die] = type_sp.get(); 7102 } 7103 } 7104 else if (type_ptr != DIE_IS_BEING_PARSED) 7105 { 7106 type_sp = type_ptr->shared_from_this(); 7107 } 7108 } 7109 return type_sp; 7110} 7111 7112size_t 7113SymbolFileDWARF::ParseTypes 7114( 7115 const SymbolContext& sc, 7116 DWARFCompileUnit* dwarf_cu, 7117 const DWARFDebugInfoEntry *die, 7118 bool parse_siblings, 7119 bool parse_children 7120) 7121{ 7122 size_t types_added = 0; 7123 while (die != NULL) 7124 { 7125 bool type_is_new = false; 7126 if (ParseType(sc, dwarf_cu, die, &type_is_new).get()) 7127 { 7128 if (type_is_new) 7129 ++types_added; 7130 } 7131 7132 if (parse_children && die->HasChildren()) 7133 { 7134 if (die->Tag() == DW_TAG_subprogram) 7135 { 7136 SymbolContext child_sc(sc); 7137 child_sc.function = sc.comp_unit->FindFunctionByUID(MakeUserID(die->GetOffset())).get(); 7138 types_added += ParseTypes(child_sc, dwarf_cu, die->GetFirstChild(), true, true); 7139 } 7140 else 7141 types_added += ParseTypes(sc, dwarf_cu, die->GetFirstChild(), true, true); 7142 } 7143 7144 if (parse_siblings) 7145 die = die->GetSibling(); 7146 else 7147 die = NULL; 7148 } 7149 return types_added; 7150} 7151 7152 7153size_t 7154SymbolFileDWARF::ParseFunctionBlocks (const SymbolContext &sc) 7155{ 7156 assert(sc.comp_unit && sc.function); 7157 size_t functions_added = 0; 7158 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 7159 if (dwarf_cu) 7160 { 7161 dw_offset_t function_die_offset = sc.function->GetID(); 7162 const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(function_die_offset); 7163 if (function_die) 7164 { 7165 ParseFunctionBlocks(sc, &sc.function->GetBlock (false), dwarf_cu, function_die, LLDB_INVALID_ADDRESS, 0); 7166 } 7167 } 7168 7169 return functions_added; 7170} 7171 7172 7173size_t 7174SymbolFileDWARF::ParseTypes (const SymbolContext &sc) 7175{ 7176 // At least a compile unit must be valid 7177 assert(sc.comp_unit); 7178 size_t types_added = 0; 7179 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 7180 if (dwarf_cu) 7181 { 7182 if (sc.function) 7183 { 7184 dw_offset_t function_die_offset = sc.function->GetID(); 7185 const DWARFDebugInfoEntry *func_die = dwarf_cu->GetDIEPtr(function_die_offset); 7186 if (func_die && func_die->HasChildren()) 7187 { 7188 types_added = ParseTypes(sc, dwarf_cu, func_die->GetFirstChild(), true, true); 7189 } 7190 } 7191 else 7192 { 7193 const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->DIE(); 7194 if (dwarf_cu_die && dwarf_cu_die->HasChildren()) 7195 { 7196 types_added = ParseTypes(sc, dwarf_cu, dwarf_cu_die->GetFirstChild(), true, true); 7197 } 7198 } 7199 } 7200 7201 return types_added; 7202} 7203 7204size_t 7205SymbolFileDWARF::ParseVariablesForContext (const SymbolContext& sc) 7206{ 7207 if (sc.comp_unit != NULL) 7208 { 7209 DWARFDebugInfo* info = DebugInfo(); 7210 if (info == NULL) 7211 return 0; 7212 7213 if (sc.function) 7214 { 7215 DWARFCompileUnit* dwarf_cu = info->GetCompileUnitContainingDIE(sc.function->GetID()).get(); 7216 7217 if (dwarf_cu == NULL) 7218 return 0; 7219 7220 const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(sc.function->GetID()); 7221 7222 dw_addr_t func_lo_pc = function_die->GetAttributeValueAsUnsigned (this, dwarf_cu, DW_AT_low_pc, LLDB_INVALID_ADDRESS); 7223 if (func_lo_pc != LLDB_INVALID_ADDRESS) 7224 { 7225 const size_t num_variables = ParseVariables(sc, dwarf_cu, func_lo_pc, function_die->GetFirstChild(), true, true); 7226 7227 // Let all blocks know they have parse all their variables 7228 sc.function->GetBlock (false).SetDidParseVariables (true, true); 7229 return num_variables; 7230 } 7231 } 7232 else if (sc.comp_unit) 7233 { 7234 DWARFCompileUnit* dwarf_cu = info->GetCompileUnit(sc.comp_unit->GetID()).get(); 7235 7236 if (dwarf_cu == NULL) 7237 return 0; 7238 7239 uint32_t vars_added = 0; 7240 VariableListSP variables (sc.comp_unit->GetVariableList(false)); 7241 7242 if (variables.get() == NULL) 7243 { 7244 variables.reset(new VariableList()); 7245 sc.comp_unit->SetVariableList(variables); 7246 7247 DWARFCompileUnit* match_dwarf_cu = NULL; 7248 const DWARFDebugInfoEntry* die = NULL; 7249 DIEArray die_offsets; 7250 if (m_using_apple_tables) 7251 { 7252 if (m_apple_names_ap.get()) 7253 { 7254 DWARFMappedHash::DIEInfoArray hash_data_array; 7255 if (m_apple_names_ap->AppendAllDIEsInRange (dwarf_cu->GetOffset(), 7256 dwarf_cu->GetNextCompileUnitOffset(), 7257 hash_data_array)) 7258 { 7259 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); 7260 } 7261 } 7262 } 7263 else 7264 { 7265 // Index if we already haven't to make sure the compile units 7266 // get indexed and make their global DIE index list 7267 if (!m_indexed) 7268 Index (); 7269 7270 m_global_index.FindAllEntriesForCompileUnit (dwarf_cu->GetOffset(), 7271 dwarf_cu->GetNextCompileUnitOffset(), 7272 die_offsets); 7273 } 7274 7275 const size_t num_matches = die_offsets.size(); 7276 if (num_matches) 7277 { 7278 DWARFDebugInfo* debug_info = DebugInfo(); 7279 for (size_t i=0; i<num_matches; ++i) 7280 { 7281 const dw_offset_t die_offset = die_offsets[i]; 7282 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &match_dwarf_cu); 7283 if (die) 7284 { 7285 VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, LLDB_INVALID_ADDRESS)); 7286 if (var_sp) 7287 { 7288 variables->AddVariableIfUnique (var_sp); 7289 ++vars_added; 7290 } 7291 } 7292 else 7293 { 7294 if (m_using_apple_tables) 7295 { 7296 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x)\n", die_offset); 7297 } 7298 } 7299 7300 } 7301 } 7302 } 7303 return vars_added; 7304 } 7305 } 7306 return 0; 7307} 7308 7309 7310VariableSP 7311SymbolFileDWARF::ParseVariableDIE 7312( 7313 const SymbolContext& sc, 7314 DWARFCompileUnit* dwarf_cu, 7315 const DWARFDebugInfoEntry *die, 7316 const lldb::addr_t func_low_pc 7317) 7318{ 7319 7320 VariableSP var_sp (m_die_to_variable_sp[die]); 7321 if (var_sp) 7322 return var_sp; // Already been parsed! 7323 7324 const dw_tag_t tag = die->Tag(); 7325 ModuleSP module = GetObjectFile()->GetModule(); 7326 7327 if ((tag == DW_TAG_variable) || 7328 (tag == DW_TAG_constant) || 7329 (tag == DW_TAG_formal_parameter && sc.function)) 7330 { 7331 DWARFDebugInfoEntry::Attributes attributes; 7332 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); 7333 if (num_attributes > 0) 7334 { 7335 const char *name = NULL; 7336 const char *mangled = NULL; 7337 Declaration decl; 7338 uint32_t i; 7339 lldb::user_id_t type_uid = LLDB_INVALID_UID; 7340 DWARFExpression location; 7341 bool is_external = false; 7342 bool is_artificial = false; 7343 bool location_is_const_value_data = false; 7344 bool has_explicit_location = false; 7345 //AccessType accessibility = eAccessNone; 7346 7347 for (i=0; i<num_attributes; ++i) 7348 { 7349 dw_attr_t attr = attributes.AttributeAtIndex(i); 7350 DWARFFormValue form_value; 7351 if (attributes.ExtractFormValueAtIndex(this, i, form_value)) 7352 { 7353 switch (attr) 7354 { 7355 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; 7356 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; 7357 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; 7358 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; 7359 case DW_AT_linkage_name: 7360 case DW_AT_MIPS_linkage_name: mangled = form_value.AsCString(&get_debug_str_data()); break; 7361 case DW_AT_type: type_uid = form_value.Reference(dwarf_cu); break; 7362 case DW_AT_external: is_external = form_value.Boolean(); break; 7363 case DW_AT_const_value: 7364 // If we have already found a DW_AT_location attribute, ignore this attribute. 7365 if (!has_explicit_location) 7366 { 7367 location_is_const_value_data = true; 7368 // The constant value will be either a block, a data value or a string. 7369 const DWARFDataExtractor& debug_info_data = get_debug_info_data(); 7370 if (DWARFFormValue::IsBlockForm(form_value.Form())) 7371 { 7372 // Retrieve the value as a block expression. 7373 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 7374 uint32_t block_length = form_value.Unsigned(); 7375 location.CopyOpcodeData(module, debug_info_data, block_offset, block_length); 7376 } 7377 else if (DWARFFormValue::IsDataForm(form_value.Form())) 7378 { 7379 // Retrieve the value as a data expression. 7380 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); 7381 uint32_t data_offset = attributes.DIEOffsetAtIndex(i); 7382 uint32_t data_length = fixed_form_sizes[form_value.Form()]; 7383 location.CopyOpcodeData(module, debug_info_data, data_offset, data_length); 7384 } 7385 else 7386 { 7387 // Retrieve the value as a string expression. 7388 if (form_value.Form() == DW_FORM_strp) 7389 { 7390 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); 7391 uint32_t data_offset = attributes.DIEOffsetAtIndex(i); 7392 uint32_t data_length = fixed_form_sizes[form_value.Form()]; 7393 location.CopyOpcodeData(module, debug_info_data, data_offset, data_length); 7394 } 7395 else 7396 { 7397 const char *str = form_value.AsCString(&debug_info_data); 7398 uint32_t string_offset = str - (const char *)debug_info_data.GetDataStart(); 7399 uint32_t string_length = strlen(str) + 1; 7400 location.CopyOpcodeData(module, debug_info_data, string_offset, string_length); 7401 } 7402 } 7403 } 7404 break; 7405 case DW_AT_location: 7406 { 7407 location_is_const_value_data = false; 7408 has_explicit_location = true; 7409 if (form_value.BlockData()) 7410 { 7411 const DWARFDataExtractor& debug_info_data = get_debug_info_data(); 7412 7413 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); 7414 uint32_t block_length = form_value.Unsigned(); 7415 location.CopyOpcodeData(module, get_debug_info_data(), block_offset, block_length); 7416 } 7417 else 7418 { 7419 const DWARFDataExtractor& debug_loc_data = get_debug_loc_data(); 7420 const dw_offset_t debug_loc_offset = form_value.Unsigned(); 7421 7422 size_t loc_list_length = DWARFLocationList::Size(debug_loc_data, debug_loc_offset); 7423 if (loc_list_length > 0) 7424 { 7425 location.CopyOpcodeData(module, debug_loc_data, debug_loc_offset, loc_list_length); 7426 assert (func_low_pc != LLDB_INVALID_ADDRESS); 7427 location.SetLocationListSlide (func_low_pc - dwarf_cu->GetBaseAddress()); 7428 } 7429 } 7430 } 7431 break; 7432 7433 case DW_AT_artificial: is_artificial = form_value.Boolean(); break; 7434 case DW_AT_accessibility: break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 7435 case DW_AT_declaration: 7436 case DW_AT_description: 7437 case DW_AT_endianity: 7438 case DW_AT_segment: 7439 case DW_AT_start_scope: 7440 case DW_AT_visibility: 7441 default: 7442 case DW_AT_abstract_origin: 7443 case DW_AT_sibling: 7444 case DW_AT_specification: 7445 break; 7446 } 7447 } 7448 } 7449 7450 ValueType scope = eValueTypeInvalid; 7451 7452 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die); 7453 dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; 7454 SymbolContextScope * symbol_context_scope = NULL; 7455 7456 // DWARF doesn't specify if a DW_TAG_variable is a local, global 7457 // or static variable, so we have to do a little digging by 7458 // looking at the location of a varaible to see if it contains 7459 // a DW_OP_addr opcode _somewhere_ in the definition. I say 7460 // somewhere because clang likes to combine small global variables 7461 // into the same symbol and have locations like: 7462 // DW_OP_addr(0x1000), DW_OP_constu(2), DW_OP_plus 7463 // So if we don't have a DW_TAG_formal_parameter, we can look at 7464 // the location to see if it contains a DW_OP_addr opcode, and 7465 // then we can correctly classify our variables. 7466 if (tag == DW_TAG_formal_parameter) 7467 scope = eValueTypeVariableArgument; 7468 else 7469 { 7470 bool op_error = false; 7471 // Check if the location has a DW_OP_addr with any address value... 7472 lldb::addr_t location_DW_OP_addr = LLDB_INVALID_ADDRESS; 7473 if (!location_is_const_value_data) 7474 { 7475 location_DW_OP_addr = location.GetLocation_DW_OP_addr (0, op_error); 7476 if (op_error) 7477 { 7478 StreamString strm; 7479 location.DumpLocationForAddress (&strm, eDescriptionLevelFull, 0, 0, NULL); 7480 GetObjectFile()->GetModule()->ReportError ("0x%8.8x: %s has an invalid location: %s", die->GetOffset(), DW_TAG_value_to_name(die->Tag()), strm.GetString().c_str()); 7481 } 7482 } 7483 7484 if (location_DW_OP_addr != LLDB_INVALID_ADDRESS) 7485 { 7486 if (is_external) 7487 scope = eValueTypeVariableGlobal; 7488 else 7489 scope = eValueTypeVariableStatic; 7490 7491 7492 SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile (); 7493 7494 if (debug_map_symfile) 7495 { 7496 // When leaving the DWARF in the .o files on darwin, 7497 // when we have a global variable that wasn't initialized, 7498 // the .o file might not have allocated a virtual 7499 // address for the global variable. In this case it will 7500 // have created a symbol for the global variable 7501 // that is undefined/data and external and the value will 7502 // be the byte size of the variable. When we do the 7503 // address map in SymbolFileDWARFDebugMap we rely on 7504 // having an address, we need to do some magic here 7505 // so we can get the correct address for our global 7506 // variable. The address for all of these entries 7507 // will be zero, and there will be an undefined symbol 7508 // in this object file, and the executable will have 7509 // a matching symbol with a good address. So here we 7510 // dig up the correct address and replace it in the 7511 // location for the variable, and set the variable's 7512 // symbol context scope to be that of the main executable 7513 // so the file address will resolve correctly. 7514 bool linked_oso_file_addr = false; 7515 if (is_external && location_DW_OP_addr == 0) 7516 { 7517 // we have a possible uninitialized extern global 7518 ConstString const_name(mangled ? mangled : name); 7519 ObjectFile *debug_map_objfile = debug_map_symfile->GetObjectFile(); 7520 if (debug_map_objfile) 7521 { 7522 Symtab *debug_map_symtab = debug_map_objfile->GetSymtab(); 7523 if (debug_map_symtab) 7524 { 7525 Symbol *exe_symbol = debug_map_symtab->FindFirstSymbolWithNameAndType (const_name, 7526 eSymbolTypeData, 7527 Symtab::eDebugYes, 7528 Symtab::eVisibilityExtern); 7529 if (exe_symbol) 7530 { 7531 if (exe_symbol->ValueIsAddress()) 7532 { 7533 const addr_t exe_file_addr = exe_symbol->GetAddress().GetFileAddress(); 7534 if (exe_file_addr != LLDB_INVALID_ADDRESS) 7535 { 7536 if (location.Update_DW_OP_addr (exe_file_addr)) 7537 { 7538 linked_oso_file_addr = true; 7539 symbol_context_scope = exe_symbol; 7540 } 7541 } 7542 } 7543 } 7544 } 7545 } 7546 } 7547 7548 if (!linked_oso_file_addr) 7549 { 7550 // The DW_OP_addr is not zero, but it contains a .o file address which 7551 // needs to be linked up correctly. 7552 const lldb::addr_t exe_file_addr = debug_map_symfile->LinkOSOFileAddress(this, location_DW_OP_addr); 7553 if (exe_file_addr != LLDB_INVALID_ADDRESS) 7554 { 7555 // Update the file address for this variable 7556 location.Update_DW_OP_addr (exe_file_addr); 7557 } 7558 else 7559 { 7560 // Variable didn't make it into the final executable 7561 return var_sp; 7562 } 7563 } 7564 } 7565 } 7566 else 7567 { 7568 scope = eValueTypeVariableLocal; 7569 } 7570 } 7571 7572 if (symbol_context_scope == NULL) 7573 { 7574 switch (parent_tag) 7575 { 7576 case DW_TAG_subprogram: 7577 case DW_TAG_inlined_subroutine: 7578 case DW_TAG_lexical_block: 7579 if (sc.function) 7580 { 7581 symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); 7582 if (symbol_context_scope == NULL) 7583 symbol_context_scope = sc.function; 7584 } 7585 break; 7586 7587 default: 7588 symbol_context_scope = sc.comp_unit; 7589 break; 7590 } 7591 } 7592 7593 if (symbol_context_scope) 7594 { 7595 var_sp.reset (new Variable (MakeUserID(die->GetOffset()), 7596 name, 7597 mangled, 7598 SymbolFileTypeSP (new SymbolFileType(*this, type_uid)), 7599 scope, 7600 symbol_context_scope, 7601 &decl, 7602 location, 7603 is_external, 7604 is_artificial)); 7605 7606 var_sp->SetLocationIsConstantValueData (location_is_const_value_data); 7607 } 7608 else 7609 { 7610 // Not ready to parse this variable yet. It might be a global 7611 // or static variable that is in a function scope and the function 7612 // in the symbol context wasn't filled in yet 7613 return var_sp; 7614 } 7615 } 7616 // Cache var_sp even if NULL (the variable was just a specification or 7617 // was missing vital information to be able to be displayed in the debugger 7618 // (missing location due to optimization, etc)) so we don't re-parse 7619 // this DIE over and over later... 7620 m_die_to_variable_sp[die] = var_sp; 7621 } 7622 return var_sp; 7623} 7624 7625 7626const DWARFDebugInfoEntry * 7627SymbolFileDWARF::FindBlockContainingSpecification (dw_offset_t func_die_offset, 7628 dw_offset_t spec_block_die_offset, 7629 DWARFCompileUnit **result_die_cu_handle) 7630{ 7631 // Give the concrete function die specified by "func_die_offset", find the 7632 // concrete block whose DW_AT_specification or DW_AT_abstract_origin points 7633 // to "spec_block_die_offset" 7634 DWARFDebugInfo* info = DebugInfo(); 7635 7636 const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint(func_die_offset, result_die_cu_handle); 7637 if (die) 7638 { 7639 assert (*result_die_cu_handle); 7640 return FindBlockContainingSpecification (*result_die_cu_handle, die, spec_block_die_offset, result_die_cu_handle); 7641 } 7642 return NULL; 7643} 7644 7645 7646const DWARFDebugInfoEntry * 7647SymbolFileDWARF::FindBlockContainingSpecification(DWARFCompileUnit* dwarf_cu, 7648 const DWARFDebugInfoEntry *die, 7649 dw_offset_t spec_block_die_offset, 7650 DWARFCompileUnit **result_die_cu_handle) 7651{ 7652 if (die) 7653 { 7654 switch (die->Tag()) 7655 { 7656 case DW_TAG_subprogram: 7657 case DW_TAG_inlined_subroutine: 7658 case DW_TAG_lexical_block: 7659 { 7660 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_specification, DW_INVALID_OFFSET) == spec_block_die_offset) 7661 { 7662 *result_die_cu_handle = dwarf_cu; 7663 return die; 7664 } 7665 7666 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_abstract_origin, DW_INVALID_OFFSET) == spec_block_die_offset) 7667 { 7668 *result_die_cu_handle = dwarf_cu; 7669 return die; 7670 } 7671 } 7672 break; 7673 } 7674 7675 // Give the concrete function die specified by "func_die_offset", find the 7676 // concrete block whose DW_AT_specification or DW_AT_abstract_origin points 7677 // to "spec_block_die_offset" 7678 for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); child_die != NULL; child_die = child_die->GetSibling()) 7679 { 7680 const DWARFDebugInfoEntry *result_die = FindBlockContainingSpecification (dwarf_cu, 7681 child_die, 7682 spec_block_die_offset, 7683 result_die_cu_handle); 7684 if (result_die) 7685 return result_die; 7686 } 7687 } 7688 7689 *result_die_cu_handle = NULL; 7690 return NULL; 7691} 7692 7693size_t 7694SymbolFileDWARF::ParseVariables 7695( 7696 const SymbolContext& sc, 7697 DWARFCompileUnit* dwarf_cu, 7698 const lldb::addr_t func_low_pc, 7699 const DWARFDebugInfoEntry *orig_die, 7700 bool parse_siblings, 7701 bool parse_children, 7702 VariableList* cc_variable_list 7703) 7704{ 7705 if (orig_die == NULL) 7706 return 0; 7707 7708 VariableListSP variable_list_sp; 7709 7710 size_t vars_added = 0; 7711 const DWARFDebugInfoEntry *die = orig_die; 7712 while (die != NULL) 7713 { 7714 dw_tag_t tag = die->Tag(); 7715 7716 // Check to see if we have already parsed this variable or constant? 7717 if (m_die_to_variable_sp[die]) 7718 { 7719 if (cc_variable_list) 7720 cc_variable_list->AddVariableIfUnique (m_die_to_variable_sp[die]); 7721 } 7722 else 7723 { 7724 // We haven't already parsed it, lets do that now. 7725 if ((tag == DW_TAG_variable) || 7726 (tag == DW_TAG_constant) || 7727 (tag == DW_TAG_formal_parameter && sc.function)) 7728 { 7729 if (variable_list_sp.get() == NULL) 7730 { 7731 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(orig_die); 7732 dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; 7733 switch (parent_tag) 7734 { 7735 case DW_TAG_compile_unit: 7736 if (sc.comp_unit != NULL) 7737 { 7738 variable_list_sp = sc.comp_unit->GetVariableList(false); 7739 if (variable_list_sp.get() == NULL) 7740 { 7741 variable_list_sp.reset(new VariableList()); 7742 sc.comp_unit->SetVariableList(variable_list_sp); 7743 } 7744 } 7745 else 7746 { 7747 GetObjectFile()->GetModule()->ReportError ("parent 0x%8.8" PRIx64 " %s with no valid compile unit in symbol context for 0x%8.8" PRIx64 " %s.\n", 7748 MakeUserID(sc_parent_die->GetOffset()), 7749 DW_TAG_value_to_name (parent_tag), 7750 MakeUserID(orig_die->GetOffset()), 7751 DW_TAG_value_to_name (orig_die->Tag())); 7752 } 7753 break; 7754 7755 case DW_TAG_subprogram: 7756 case DW_TAG_inlined_subroutine: 7757 case DW_TAG_lexical_block: 7758 if (sc.function != NULL) 7759 { 7760 // Check to see if we already have parsed the variables for the given scope 7761 7762 Block *block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); 7763 if (block == NULL) 7764 { 7765 // This must be a specification or abstract origin with 7766 // a concrete block couterpart in the current function. We need 7767 // to find the concrete block so we can correctly add the 7768 // variable to it 7769 DWARFCompileUnit *concrete_block_die_cu = dwarf_cu; 7770 const DWARFDebugInfoEntry *concrete_block_die = FindBlockContainingSpecification (sc.function->GetID(), 7771 sc_parent_die->GetOffset(), 7772 &concrete_block_die_cu); 7773 if (concrete_block_die) 7774 block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(concrete_block_die->GetOffset())); 7775 } 7776 7777 if (block != NULL) 7778 { 7779 const bool can_create = false; 7780 variable_list_sp = block->GetBlockVariableList (can_create); 7781 if (variable_list_sp.get() == NULL) 7782 { 7783 variable_list_sp.reset(new VariableList()); 7784 block->SetVariableList(variable_list_sp); 7785 } 7786 } 7787 } 7788 break; 7789 7790 default: 7791 GetObjectFile()->GetModule()->ReportError ("didn't find appropriate parent DIE for variable list for 0x%8.8" PRIx64 " %s.\n", 7792 MakeUserID(orig_die->GetOffset()), 7793 DW_TAG_value_to_name (orig_die->Tag())); 7794 break; 7795 } 7796 } 7797 7798 if (variable_list_sp) 7799 { 7800 VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, func_low_pc)); 7801 if (var_sp) 7802 { 7803 variable_list_sp->AddVariableIfUnique (var_sp); 7804 if (cc_variable_list) 7805 cc_variable_list->AddVariableIfUnique (var_sp); 7806 ++vars_added; 7807 } 7808 } 7809 } 7810 } 7811 7812 bool skip_children = (sc.function == NULL && tag == DW_TAG_subprogram); 7813 7814 if (!skip_children && parse_children && die->HasChildren()) 7815 { 7816 vars_added += ParseVariables(sc, dwarf_cu, func_low_pc, die->GetFirstChild(), true, true, cc_variable_list); 7817 } 7818 7819 if (parse_siblings) 7820 die = die->GetSibling(); 7821 else 7822 die = NULL; 7823 } 7824 return vars_added; 7825} 7826 7827//------------------------------------------------------------------ 7828// PluginInterface protocol 7829//------------------------------------------------------------------ 7830ConstString 7831SymbolFileDWARF::GetPluginName() 7832{ 7833 return GetPluginNameStatic(); 7834} 7835 7836uint32_t 7837SymbolFileDWARF::GetPluginVersion() 7838{ 7839 return 1; 7840} 7841 7842void 7843SymbolFileDWARF::CompleteTagDecl (void *baton, clang::TagDecl *decl) 7844{ 7845 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 7846 ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); 7847 if (clang_type) 7848 symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); 7849} 7850 7851void 7852SymbolFileDWARF::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *decl) 7853{ 7854 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 7855 ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); 7856 if (clang_type) 7857 symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); 7858} 7859 7860void 7861SymbolFileDWARF::DumpIndexes () 7862{ 7863 StreamFile s(stdout, false); 7864 7865 s.Printf ("DWARF index for (%s) '%s':", 7866 GetObjectFile()->GetModule()->GetArchitecture().GetArchitectureName(), 7867 GetObjectFile()->GetFileSpec().GetPath().c_str()); 7868 s.Printf("\nFunction basenames:\n"); m_function_basename_index.Dump (&s); 7869 s.Printf("\nFunction fullnames:\n"); m_function_fullname_index.Dump (&s); 7870 s.Printf("\nFunction methods:\n"); m_function_method_index.Dump (&s); 7871 s.Printf("\nFunction selectors:\n"); m_function_selector_index.Dump (&s); 7872 s.Printf("\nObjective C class selectors:\n"); m_objc_class_selectors_index.Dump (&s); 7873 s.Printf("\nGlobals and statics:\n"); m_global_index.Dump (&s); 7874 s.Printf("\nTypes:\n"); m_type_index.Dump (&s); 7875 s.Printf("\nNamepaces:\n"); m_namespace_index.Dump (&s); 7876} 7877 7878void 7879SymbolFileDWARF::SearchDeclContext (const clang::DeclContext *decl_context, 7880 const char *name, 7881 llvm::SmallVectorImpl <clang::NamedDecl *> *results) 7882{ 7883 DeclContextToDIEMap::iterator iter = m_decl_ctx_to_die.find(decl_context); 7884 7885 if (iter == m_decl_ctx_to_die.end()) 7886 return; 7887 7888 for (DIEPointerSet::iterator pos = iter->second.begin(), end = iter->second.end(); pos != end; ++pos) 7889 { 7890 const DWARFDebugInfoEntry *context_die = *pos; 7891 7892 if (!results) 7893 return; 7894 7895 DWARFDebugInfo* info = DebugInfo(); 7896 7897 DIEArray die_offsets; 7898 7899 DWARFCompileUnit* dwarf_cu = NULL; 7900 const DWARFDebugInfoEntry* die = NULL; 7901 7902 if (m_using_apple_tables) 7903 { 7904 if (m_apple_types_ap.get()) 7905 m_apple_types_ap->FindByName (name, die_offsets); 7906 } 7907 else 7908 { 7909 if (!m_indexed) 7910 Index (); 7911 7912 m_type_index.Find (ConstString(name), die_offsets); 7913 } 7914 7915 const size_t num_matches = die_offsets.size(); 7916 7917 if (num_matches) 7918 { 7919 for (size_t i = 0; i < num_matches; ++i) 7920 { 7921 const dw_offset_t die_offset = die_offsets[i]; 7922 die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); 7923 7924 if (die->GetParent() != context_die) 7925 continue; 7926 7927 Type *matching_type = ResolveType (dwarf_cu, die); 7928 7929 clang::QualType qual_type = matching_type->GetClangForwardType().GetQualType(); 7930 7931 if (const clang::TagType *tag_type = llvm::dyn_cast<clang::TagType>(qual_type.getTypePtr())) 7932 { 7933 clang::TagDecl *tag_decl = tag_type->getDecl(); 7934 results->push_back(tag_decl); 7935 } 7936 else if (const clang::TypedefType *typedef_type = llvm::dyn_cast<clang::TypedefType>(qual_type.getTypePtr())) 7937 { 7938 clang::TypedefNameDecl *typedef_decl = typedef_type->getDecl(); 7939 results->push_back(typedef_decl); 7940 } 7941 } 7942 } 7943 } 7944} 7945 7946void 7947SymbolFileDWARF::FindExternalVisibleDeclsByName (void *baton, 7948 const clang::DeclContext *decl_context, 7949 clang::DeclarationName decl_name, 7950 llvm::SmallVectorImpl <clang::NamedDecl *> *results) 7951{ 7952 7953 switch (decl_context->getDeclKind()) 7954 { 7955 case clang::Decl::Namespace: 7956 case clang::Decl::TranslationUnit: 7957 { 7958 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 7959 symbol_file_dwarf->SearchDeclContext (decl_context, decl_name.getAsString().c_str(), results); 7960 } 7961 break; 7962 default: 7963 break; 7964 } 7965} 7966 7967bool 7968SymbolFileDWARF::LayoutRecordType (void *baton, 7969 const clang::RecordDecl *record_decl, 7970 uint64_t &size, 7971 uint64_t &alignment, 7972 llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets, 7973 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets, 7974 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets) 7975{ 7976 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; 7977 return symbol_file_dwarf->LayoutRecordType (record_decl, size, alignment, field_offsets, base_offsets, vbase_offsets); 7978} 7979 7980 7981bool 7982SymbolFileDWARF::LayoutRecordType (const clang::RecordDecl *record_decl, 7983 uint64_t &bit_size, 7984 uint64_t &alignment, 7985 llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets, 7986 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets, 7987 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets) 7988{ 7989 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 7990 RecordDeclToLayoutMap::iterator pos = m_record_decl_to_layout_map.find (record_decl); 7991 bool success = false; 7992 base_offsets.clear(); 7993 vbase_offsets.clear(); 7994 if (pos != m_record_decl_to_layout_map.end()) 7995 { 7996 bit_size = pos->second.bit_size; 7997 alignment = pos->second.alignment; 7998 field_offsets.swap(pos->second.field_offsets); 7999 base_offsets.swap (pos->second.base_offsets); 8000 vbase_offsets.swap (pos->second.vbase_offsets); 8001 m_record_decl_to_layout_map.erase(pos); 8002 success = true; 8003 } 8004 else 8005 { 8006 bit_size = 0; 8007 alignment = 0; 8008 field_offsets.clear(); 8009 } 8010 8011 if (log) 8012 GetObjectFile()->GetModule()->LogMessage (log, 8013 "SymbolFileDWARF::LayoutRecordType (record_decl = %p, bit_size = %" PRIu64 ", alignment = %" PRIu64 ", field_offsets[%u],base_offsets[%u], vbase_offsets[%u]) success = %i", 8014 record_decl, 8015 bit_size, 8016 alignment, 8017 (uint32_t)field_offsets.size(), 8018 (uint32_t)base_offsets.size(), 8019 (uint32_t)vbase_offsets.size(), 8020 success); 8021 return success; 8022} 8023 8024 8025SymbolFileDWARFDebugMap * 8026SymbolFileDWARF::GetDebugMapSymfile () 8027{ 8028 if (m_debug_map_symfile == NULL && !m_debug_map_module_wp.expired()) 8029 { 8030 lldb::ModuleSP module_sp (m_debug_map_module_wp.lock()); 8031 if (module_sp) 8032 { 8033 SymbolVendor *sym_vendor = module_sp->GetSymbolVendor(); 8034 if (sym_vendor) 8035 m_debug_map_symfile = (SymbolFileDWARFDebugMap *)sym_vendor->GetSymbolFile(); 8036 } 8037 } 8038 return m_debug_map_symfile; 8039} 8040 8041 8042