1 //===-- Module.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 "lldb/lldb-python.h" 11 12 #include "lldb/Core/Error.h" 13 #include "lldb/Core/Module.h" 14 #include "lldb/Core/DataBuffer.h" 15 #include "lldb/Core/DataBufferHeap.h" 16 #include "lldb/Core/Log.h" 17 #include "lldb/Core/ModuleList.h" 18 #include "lldb/Core/ModuleSpec.h" 19 #include "lldb/Core/RegularExpression.h" 20 #include "lldb/Core/Section.h" 21 #include "lldb/Core/StreamString.h" 22 #include "lldb/Core/Timer.h" 23 #include "lldb/Host/Host.h" 24 #include "lldb/Host/Symbols.h" 25 #include "lldb/Interpreter/CommandInterpreter.h" 26 #include "lldb/Interpreter/ScriptInterpreter.h" 27 #include "lldb/lldb-private-log.h" 28 #include "lldb/Symbol/CompileUnit.h" 29 #include "lldb/Symbol/ObjectFile.h" 30 #include "lldb/Symbol/SymbolContext.h" 31 #include "lldb/Symbol/SymbolVendor.h" 32 #include "lldb/Target/CPPLanguageRuntime.h" 33 #include "lldb/Target/ObjCLanguageRuntime.h" 34 #include "lldb/Target/Process.h" 35 #include "lldb/Target/Target.h" 36 37 using namespace lldb; 38 using namespace lldb_private; 39 40 // Shared pointers to modules track module lifetimes in 41 // targets and in the global module, but this collection 42 // will track all module objects that are still alive 43 typedef std::vector<Module *> ModuleCollection; 44 45 static ModuleCollection & 46 GetModuleCollection() 47 { 48 // This module collection needs to live past any module, so we could either make it a 49 // shared pointer in each module or just leak is. Since it is only an empty vector by 50 // the time all the modules have gone away, we just leak it for now. If we decide this 51 // is a big problem we can introduce a Finalize method that will tear everything down in 52 // a predictable order. 53 54 static ModuleCollection *g_module_collection = NULL; 55 if (g_module_collection == NULL) 56 g_module_collection = new ModuleCollection(); 57 58 return *g_module_collection; 59 } 60 61 Mutex * 62 Module::GetAllocationModuleCollectionMutex() 63 { 64 // NOTE: The mutex below must be leaked since the global module list in 65 // the ModuleList class will get torn at some point, and we can't know 66 // if it will tear itself down before the "g_module_collection_mutex" below 67 // will. So we leak a Mutex object below to safeguard against that 68 69 static Mutex *g_module_collection_mutex = NULL; 70 if (g_module_collection_mutex == NULL) 71 g_module_collection_mutex = new Mutex (Mutex::eMutexTypeRecursive); // NOTE: known leak 72 return g_module_collection_mutex; 73 } 74 75 size_t 76 Module::GetNumberAllocatedModules () 77 { 78 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 79 return GetModuleCollection().size(); 80 } 81 82 Module * 83 Module::GetAllocatedModuleAtIndex (size_t idx) 84 { 85 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 86 ModuleCollection &modules = GetModuleCollection(); 87 if (idx < modules.size()) 88 return modules[idx]; 89 return NULL; 90 } 91 #if 0 92 93 // These functions help us to determine if modules are still loaded, yet don't require that 94 // you have a command interpreter and can easily be called from an external debugger. 95 namespace lldb { 96 97 void 98 ClearModuleInfo (void) 99 { 100 const bool mandatory = true; 101 ModuleList::RemoveOrphanSharedModules(mandatory); 102 } 103 104 void 105 DumpModuleInfo (void) 106 { 107 Mutex::Locker locker (Module::GetAllocationModuleCollectionMutex()); 108 ModuleCollection &modules = GetModuleCollection(); 109 const size_t count = modules.size(); 110 printf ("%s: %" PRIu64 " modules:\n", __PRETTY_FUNCTION__, (uint64_t)count); 111 for (size_t i=0; i<count; ++i) 112 { 113 114 StreamString strm; 115 Module *module = modules[i]; 116 const bool in_shared_module_list = ModuleList::ModuleIsInCache (module); 117 module->GetDescription(&strm, eDescriptionLevelFull); 118 printf ("%p: shared = %i, ref_count = %3u, module = %s\n", 119 module, 120 in_shared_module_list, 121 (uint32_t)module->use_count(), 122 strm.GetString().c_str()); 123 } 124 } 125 } 126 127 #endif 128 129 Module::Module (const ModuleSpec &module_spec) : 130 m_mutex (Mutex::eMutexTypeRecursive), 131 m_mod_time (module_spec.GetFileSpec().GetModificationTime()), 132 m_arch (module_spec.GetArchitecture()), 133 m_uuid (), 134 m_file (module_spec.GetFileSpec()), 135 m_platform_file(module_spec.GetPlatformFileSpec()), 136 m_symfile_spec (module_spec.GetSymbolFileSpec()), 137 m_object_name (module_spec.GetObjectName()), 138 m_object_offset (module_spec.GetObjectOffset()), 139 m_objfile_sp (), 140 m_symfile_ap (), 141 m_ast (), 142 m_source_mappings (), 143 m_did_load_objfile (false), 144 m_did_load_symbol_vendor (false), 145 m_did_parse_uuid (false), 146 m_did_init_ast (false), 147 m_is_dynamic_loader_module (false), 148 m_file_has_changed (false), 149 m_first_file_changed_log (false) 150 { 151 // Scope for locker below... 152 { 153 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 154 GetModuleCollection().push_back(this); 155 } 156 157 Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_OBJECT|LIBLLDB_LOG_MODULES)); 158 if (log) 159 log->Printf ("%p Module::Module((%s) '%s%s%s%s')", 160 this, 161 m_arch.GetArchitectureName(), 162 m_file.GetPath().c_str(), 163 m_object_name.IsEmpty() ? "" : "(", 164 m_object_name.IsEmpty() ? "" : m_object_name.AsCString(""), 165 m_object_name.IsEmpty() ? "" : ")"); 166 } 167 168 Module::Module(const FileSpec& file_spec, 169 const ArchSpec& arch, 170 const ConstString *object_name, 171 off_t object_offset) : 172 m_mutex (Mutex::eMutexTypeRecursive), 173 m_mod_time (file_spec.GetModificationTime()), 174 m_arch (arch), 175 m_uuid (), 176 m_file (file_spec), 177 m_platform_file(), 178 m_symfile_spec (), 179 m_object_name (), 180 m_object_offset (object_offset), 181 m_objfile_sp (), 182 m_symfile_ap (), 183 m_ast (), 184 m_source_mappings (), 185 m_did_load_objfile (false), 186 m_did_load_symbol_vendor (false), 187 m_did_parse_uuid (false), 188 m_did_init_ast (false), 189 m_is_dynamic_loader_module (false), 190 m_file_has_changed (false), 191 m_first_file_changed_log (false) 192 { 193 // Scope for locker below... 194 { 195 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 196 GetModuleCollection().push_back(this); 197 } 198 199 if (object_name) 200 m_object_name = *object_name; 201 Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_OBJECT|LIBLLDB_LOG_MODULES)); 202 if (log) 203 log->Printf ("%p Module::Module((%s) '%s%s%s%s')", 204 this, 205 m_arch.GetArchitectureName(), 206 m_file.GetPath().c_str(), 207 m_object_name.IsEmpty() ? "" : "(", 208 m_object_name.IsEmpty() ? "" : m_object_name.AsCString(""), 209 m_object_name.IsEmpty() ? "" : ")"); 210 } 211 212 Module::~Module() 213 { 214 // Scope for locker below... 215 { 216 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 217 ModuleCollection &modules = GetModuleCollection(); 218 ModuleCollection::iterator end = modules.end(); 219 ModuleCollection::iterator pos = std::find(modules.begin(), end, this); 220 assert (pos != end); 221 modules.erase(pos); 222 } 223 Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_OBJECT|LIBLLDB_LOG_MODULES)); 224 if (log) 225 log->Printf ("%p Module::~Module((%s) '%s%s%s%s')", 226 this, 227 m_arch.GetArchitectureName(), 228 m_file.GetPath().c_str(), 229 m_object_name.IsEmpty() ? "" : "(", 230 m_object_name.IsEmpty() ? "" : m_object_name.AsCString(""), 231 m_object_name.IsEmpty() ? "" : ")"); 232 // Release any auto pointers before we start tearing down our member 233 // variables since the object file and symbol files might need to make 234 // function calls back into this module object. The ordering is important 235 // here because symbol files can require the module object file. So we tear 236 // down the symbol file first, then the object file. 237 m_symfile_ap.reset(); 238 m_objfile_sp.reset(); 239 } 240 241 ObjectFile * 242 Module::GetMemoryObjectFile (const lldb::ProcessSP &process_sp, lldb::addr_t header_addr, Error &error) 243 { 244 if (m_objfile_sp) 245 { 246 error.SetErrorString ("object file already exists"); 247 } 248 else 249 { 250 Mutex::Locker locker (m_mutex); 251 if (process_sp) 252 { 253 m_did_load_objfile = true; 254 std::unique_ptr<DataBufferHeap> data_ap (new DataBufferHeap (512, 0)); 255 Error readmem_error; 256 const size_t bytes_read = process_sp->ReadMemory (header_addr, 257 data_ap->GetBytes(), 258 data_ap->GetByteSize(), 259 readmem_error); 260 if (bytes_read == 512) 261 { 262 DataBufferSP data_sp(data_ap.release()); 263 m_objfile_sp = ObjectFile::FindPlugin(shared_from_this(), process_sp, header_addr, data_sp); 264 if (m_objfile_sp) 265 { 266 StreamString s; 267 s.Printf("0x%16.16" PRIx64, header_addr); 268 m_object_name.SetCString (s.GetData()); 269 270 // Once we get the object file, update our module with the object file's 271 // architecture since it might differ in vendor/os if some parts were 272 // unknown. 273 m_objfile_sp->GetArchitecture (m_arch); 274 } 275 else 276 { 277 error.SetErrorString ("unable to find suitable object file plug-in"); 278 } 279 } 280 else 281 { 282 error.SetErrorStringWithFormat ("unable to read header from memory: %s", readmem_error.AsCString()); 283 } 284 } 285 else 286 { 287 error.SetErrorString ("invalid process"); 288 } 289 } 290 return m_objfile_sp.get(); 291 } 292 293 294 const lldb_private::UUID& 295 Module::GetUUID() 296 { 297 Mutex::Locker locker (m_mutex); 298 if (m_did_parse_uuid == false) 299 { 300 ObjectFile * obj_file = GetObjectFile (); 301 302 if (obj_file != NULL) 303 { 304 obj_file->GetUUID(&m_uuid); 305 m_did_parse_uuid = true; 306 } 307 } 308 return m_uuid; 309 } 310 311 ClangASTContext & 312 Module::GetClangASTContext () 313 { 314 Mutex::Locker locker (m_mutex); 315 if (m_did_init_ast == false) 316 { 317 ObjectFile * objfile = GetObjectFile(); 318 ArchSpec object_arch; 319 if (objfile && objfile->GetArchitecture(object_arch)) 320 { 321 m_did_init_ast = true; 322 323 // LLVM wants this to be set to iOS or MacOSX; if we're working on 324 // a bare-boards type image, change the triple for llvm's benefit. 325 if (object_arch.GetTriple().getVendor() == llvm::Triple::Apple 326 && object_arch.GetTriple().getOS() == llvm::Triple::UnknownOS) 327 { 328 if (object_arch.GetTriple().getArch() == llvm::Triple::arm || 329 object_arch.GetTriple().getArch() == llvm::Triple::thumb) 330 { 331 object_arch.GetTriple().setOS(llvm::Triple::IOS); 332 } 333 else 334 { 335 object_arch.GetTriple().setOS(llvm::Triple::MacOSX); 336 } 337 } 338 m_ast.SetArchitecture (object_arch); 339 } 340 } 341 return m_ast; 342 } 343 344 void 345 Module::ParseAllDebugSymbols() 346 { 347 Mutex::Locker locker (m_mutex); 348 size_t num_comp_units = GetNumCompileUnits(); 349 if (num_comp_units == 0) 350 return; 351 352 SymbolContext sc; 353 sc.module_sp = shared_from_this(); 354 SymbolVendor *symbols = GetSymbolVendor (); 355 356 for (size_t cu_idx = 0; cu_idx < num_comp_units; cu_idx++) 357 { 358 sc.comp_unit = symbols->GetCompileUnitAtIndex(cu_idx).get(); 359 if (sc.comp_unit) 360 { 361 sc.function = NULL; 362 symbols->ParseVariablesForContext(sc); 363 364 symbols->ParseCompileUnitFunctions(sc); 365 366 for (size_t func_idx = 0; (sc.function = sc.comp_unit->GetFunctionAtIndex(func_idx).get()) != NULL; ++func_idx) 367 { 368 symbols->ParseFunctionBlocks(sc); 369 370 // Parse the variables for this function and all its blocks 371 symbols->ParseVariablesForContext(sc); 372 } 373 374 375 // Parse all types for this compile unit 376 sc.function = NULL; 377 symbols->ParseTypes(sc); 378 } 379 } 380 } 381 382 void 383 Module::CalculateSymbolContext(SymbolContext* sc) 384 { 385 sc->module_sp = shared_from_this(); 386 } 387 388 ModuleSP 389 Module::CalculateSymbolContextModule () 390 { 391 return shared_from_this(); 392 } 393 394 void 395 Module::DumpSymbolContext(Stream *s) 396 { 397 s->Printf(", Module{%p}", this); 398 } 399 400 size_t 401 Module::GetNumCompileUnits() 402 { 403 Mutex::Locker locker (m_mutex); 404 Timer scoped_timer(__PRETTY_FUNCTION__, "Module::GetNumCompileUnits (module = %p)", this); 405 SymbolVendor *symbols = GetSymbolVendor (); 406 if (symbols) 407 return symbols->GetNumCompileUnits(); 408 return 0; 409 } 410 411 CompUnitSP 412 Module::GetCompileUnitAtIndex (size_t index) 413 { 414 Mutex::Locker locker (m_mutex); 415 size_t num_comp_units = GetNumCompileUnits (); 416 CompUnitSP cu_sp; 417 418 if (index < num_comp_units) 419 { 420 SymbolVendor *symbols = GetSymbolVendor (); 421 if (symbols) 422 cu_sp = symbols->GetCompileUnitAtIndex(index); 423 } 424 return cu_sp; 425 } 426 427 bool 428 Module::ResolveFileAddress (lldb::addr_t vm_addr, Address& so_addr) 429 { 430 Mutex::Locker locker (m_mutex); 431 Timer scoped_timer(__PRETTY_FUNCTION__, "Module::ResolveFileAddress (vm_addr = 0x%" PRIx64 ")", vm_addr); 432 ObjectFile* ofile = GetObjectFile(); 433 if (ofile) 434 return so_addr.ResolveAddressUsingFileSections(vm_addr, ofile->GetSectionList()); 435 return false; 436 } 437 438 uint32_t 439 Module::ResolveSymbolContextForAddress (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc) 440 { 441 Mutex::Locker locker (m_mutex); 442 uint32_t resolved_flags = 0; 443 444 // Clear the result symbol context in case we don't find anything, but don't clear the target 445 sc.Clear(false); 446 447 // Get the section from the section/offset address. 448 SectionSP section_sp (so_addr.GetSection()); 449 450 // Make sure the section matches this module before we try and match anything 451 if (section_sp && section_sp->GetModule().get() == this) 452 { 453 // If the section offset based address resolved itself, then this 454 // is the right module. 455 sc.module_sp = shared_from_this(); 456 resolved_flags |= eSymbolContextModule; 457 458 // Resolve the compile unit, function, block, line table or line 459 // entry if requested. 460 if (resolve_scope & eSymbolContextCompUnit || 461 resolve_scope & eSymbolContextFunction || 462 resolve_scope & eSymbolContextBlock || 463 resolve_scope & eSymbolContextLineEntry ) 464 { 465 SymbolVendor *symbols = GetSymbolVendor (); 466 if (symbols) 467 resolved_flags |= symbols->ResolveSymbolContext (so_addr, resolve_scope, sc); 468 } 469 470 // Resolve the symbol if requested, but don't re-look it up if we've already found it. 471 if (resolve_scope & eSymbolContextSymbol && !(resolved_flags & eSymbolContextSymbol)) 472 { 473 ObjectFile* ofile = GetObjectFile(); 474 if (ofile) 475 { 476 Symtab *symtab = ofile->GetSymtab(); 477 if (symtab) 478 { 479 if (so_addr.IsSectionOffset()) 480 { 481 sc.symbol = symtab->FindSymbolContainingFileAddress(so_addr.GetFileAddress()); 482 if (sc.symbol) 483 resolved_flags |= eSymbolContextSymbol; 484 } 485 } 486 } 487 } 488 } 489 return resolved_flags; 490 } 491 492 uint32_t 493 Module::ResolveSymbolContextForFilePath 494 ( 495 const char *file_path, 496 uint32_t line, 497 bool check_inlines, 498 uint32_t resolve_scope, 499 SymbolContextList& sc_list 500 ) 501 { 502 FileSpec file_spec(file_path, false); 503 return ResolveSymbolContextsForFileSpec (file_spec, line, check_inlines, resolve_scope, sc_list); 504 } 505 506 uint32_t 507 Module::ResolveSymbolContextsForFileSpec (const FileSpec &file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list) 508 { 509 Mutex::Locker locker (m_mutex); 510 Timer scoped_timer(__PRETTY_FUNCTION__, 511 "Module::ResolveSymbolContextForFilePath (%s:%u, check_inlines = %s, resolve_scope = 0x%8.8x)", 512 file_spec.GetPath().c_str(), 513 line, 514 check_inlines ? "yes" : "no", 515 resolve_scope); 516 517 const uint32_t initial_count = sc_list.GetSize(); 518 519 SymbolVendor *symbols = GetSymbolVendor (); 520 if (symbols) 521 symbols->ResolveSymbolContext (file_spec, line, check_inlines, resolve_scope, sc_list); 522 523 return sc_list.GetSize() - initial_count; 524 } 525 526 527 size_t 528 Module::FindGlobalVariables (const ConstString &name, 529 const ClangNamespaceDecl *namespace_decl, 530 bool append, 531 size_t max_matches, 532 VariableList& variables) 533 { 534 SymbolVendor *symbols = GetSymbolVendor (); 535 if (symbols) 536 return symbols->FindGlobalVariables(name, namespace_decl, append, max_matches, variables); 537 return 0; 538 } 539 540 size_t 541 Module::FindGlobalVariables (const RegularExpression& regex, 542 bool append, 543 size_t max_matches, 544 VariableList& variables) 545 { 546 SymbolVendor *symbols = GetSymbolVendor (); 547 if (symbols) 548 return symbols->FindGlobalVariables(regex, append, max_matches, variables); 549 return 0; 550 } 551 552 size_t 553 Module::FindCompileUnits (const FileSpec &path, 554 bool append, 555 SymbolContextList &sc_list) 556 { 557 if (!append) 558 sc_list.Clear(); 559 560 const size_t start_size = sc_list.GetSize(); 561 const size_t num_compile_units = GetNumCompileUnits(); 562 SymbolContext sc; 563 sc.module_sp = shared_from_this(); 564 const bool compare_directory = path.GetDirectory(); 565 for (size_t i=0; i<num_compile_units; ++i) 566 { 567 sc.comp_unit = GetCompileUnitAtIndex(i).get(); 568 if (sc.comp_unit) 569 { 570 if (FileSpec::Equal (*sc.comp_unit, path, compare_directory)) 571 sc_list.Append(sc); 572 } 573 } 574 return sc_list.GetSize() - start_size; 575 } 576 577 size_t 578 Module::FindFunctions (const ConstString &name, 579 const ClangNamespaceDecl *namespace_decl, 580 uint32_t name_type_mask, 581 bool include_symbols, 582 bool include_inlines, 583 bool append, 584 SymbolContextList& sc_list) 585 { 586 if (!append) 587 sc_list.Clear(); 588 589 const size_t old_size = sc_list.GetSize(); 590 591 // Find all the functions (not symbols, but debug information functions... 592 SymbolVendor *symbols = GetSymbolVendor (); 593 594 if (name_type_mask & eFunctionNameTypeAuto) 595 { 596 ConstString lookup_name; 597 uint32_t lookup_name_type_mask = 0; 598 bool match_name_after_lookup = false; 599 Module::PrepareForFunctionNameLookup (name, 600 name_type_mask, 601 lookup_name, 602 lookup_name_type_mask, 603 match_name_after_lookup); 604 605 if (symbols) 606 symbols->FindFunctions(lookup_name, 607 namespace_decl, 608 lookup_name_type_mask, 609 include_inlines, 610 append, 611 sc_list); 612 613 // Now check our symbol table for symbols that are code symbols if requested 614 if (include_symbols) 615 { 616 ObjectFile *objfile = GetObjectFile(); 617 if (objfile) 618 { 619 Symtab *symtab = objfile->GetSymtab(); 620 if (symtab) 621 symtab->FindFunctionSymbols(lookup_name, lookup_name_type_mask, sc_list); 622 } 623 } 624 625 if (match_name_after_lookup) 626 { 627 SymbolContext sc; 628 size_t i = old_size; 629 while (i<sc_list.GetSize()) 630 { 631 if (sc_list.GetContextAtIndex(i, sc)) 632 { 633 const char *func_name = sc.GetFunctionName().GetCString(); 634 if (func_name && strstr (func_name, name.GetCString()) == NULL) 635 { 636 // Remove the current context 637 sc_list.RemoveContextAtIndex(i); 638 // Don't increment i and continue in the loop 639 continue; 640 } 641 } 642 ++i; 643 } 644 } 645 646 } 647 else 648 { 649 if (symbols) 650 symbols->FindFunctions(name, namespace_decl, name_type_mask, include_inlines, append, sc_list); 651 652 // Now check our symbol table for symbols that are code symbols if requested 653 if (include_symbols) 654 { 655 ObjectFile *objfile = GetObjectFile(); 656 if (objfile) 657 { 658 Symtab *symtab = objfile->GetSymtab(); 659 if (symtab) 660 symtab->FindFunctionSymbols(name, name_type_mask, sc_list); 661 } 662 } 663 } 664 665 return sc_list.GetSize() - old_size; 666 } 667 668 size_t 669 Module::FindFunctions (const RegularExpression& regex, 670 bool include_symbols, 671 bool include_inlines, 672 bool append, 673 SymbolContextList& sc_list) 674 { 675 if (!append) 676 sc_list.Clear(); 677 678 const size_t start_size = sc_list.GetSize(); 679 680 SymbolVendor *symbols = GetSymbolVendor (); 681 if (symbols) 682 symbols->FindFunctions(regex, include_inlines, append, sc_list); 683 // Now check our symbol table for symbols that are code symbols if requested 684 if (include_symbols) 685 { 686 ObjectFile *objfile = GetObjectFile(); 687 if (objfile) 688 { 689 Symtab *symtab = objfile->GetSymtab(); 690 if (symtab) 691 { 692 std::vector<uint32_t> symbol_indexes; 693 symtab->AppendSymbolIndexesMatchingRegExAndType (regex, eSymbolTypeAny, Symtab::eDebugAny, Symtab::eVisibilityAny, symbol_indexes); 694 const size_t num_matches = symbol_indexes.size(); 695 if (num_matches) 696 { 697 const bool merge_symbol_into_function = true; 698 SymbolContext sc(this); 699 for (size_t i=0; i<num_matches; i++) 700 { 701 sc.symbol = symtab->SymbolAtIndex(symbol_indexes[i]); 702 SymbolType sym_type = sc.symbol->GetType(); 703 if (sc.symbol && (sym_type == eSymbolTypeCode || 704 sym_type == eSymbolTypeResolver)) 705 sc_list.AppendIfUnique (sc, merge_symbol_into_function); 706 } 707 } 708 } 709 } 710 } 711 return sc_list.GetSize() - start_size; 712 } 713 714 size_t 715 Module::FindTypes_Impl (const SymbolContext& sc, 716 const ConstString &name, 717 const ClangNamespaceDecl *namespace_decl, 718 bool append, 719 size_t max_matches, 720 TypeList& types) 721 { 722 Timer scoped_timer(__PRETTY_FUNCTION__, __PRETTY_FUNCTION__); 723 if (sc.module_sp.get() == NULL || sc.module_sp.get() == this) 724 { 725 SymbolVendor *symbols = GetSymbolVendor (); 726 if (symbols) 727 return symbols->FindTypes(sc, name, namespace_decl, append, max_matches, types); 728 } 729 return 0; 730 } 731 732 size_t 733 Module::FindTypesInNamespace (const SymbolContext& sc, 734 const ConstString &type_name, 735 const ClangNamespaceDecl *namespace_decl, 736 size_t max_matches, 737 TypeList& type_list) 738 { 739 const bool append = true; 740 return FindTypes_Impl(sc, type_name, namespace_decl, append, max_matches, type_list); 741 } 742 743 lldb::TypeSP 744 Module::FindFirstType (const SymbolContext& sc, 745 const ConstString &name, 746 bool exact_match) 747 { 748 TypeList type_list; 749 const size_t num_matches = FindTypes (sc, name, exact_match, 1, type_list); 750 if (num_matches) 751 return type_list.GetTypeAtIndex(0); 752 return TypeSP(); 753 } 754 755 756 size_t 757 Module::FindTypes (const SymbolContext& sc, 758 const ConstString &name, 759 bool exact_match, 760 size_t max_matches, 761 TypeList& types) 762 { 763 size_t num_matches = 0; 764 const char *type_name_cstr = name.GetCString(); 765 std::string type_scope; 766 std::string type_basename; 767 const bool append = true; 768 TypeClass type_class = eTypeClassAny; 769 if (Type::GetTypeScopeAndBasename (type_name_cstr, type_scope, type_basename, type_class)) 770 { 771 // Check if "name" starts with "::" which means the qualified type starts 772 // from the root namespace and implies and exact match. The typenames we 773 // get back from clang do not start with "::" so we need to strip this off 774 // in order to get the qualfied names to match 775 776 if (type_scope.size() >= 2 && type_scope[0] == ':' && type_scope[1] == ':') 777 { 778 type_scope.erase(0,2); 779 exact_match = true; 780 } 781 ConstString type_basename_const_str (type_basename.c_str()); 782 if (FindTypes_Impl(sc, type_basename_const_str, NULL, append, max_matches, types)) 783 { 784 types.RemoveMismatchedTypes (type_scope, type_basename, type_class, exact_match); 785 num_matches = types.GetSize(); 786 } 787 } 788 else 789 { 790 // The type is not in a namespace/class scope, just search for it by basename 791 if (type_class != eTypeClassAny) 792 { 793 // The "type_name_cstr" will have been modified if we have a valid type class 794 // prefix (like "struct", "class", "union", "typedef" etc). 795 num_matches = FindTypes_Impl(sc, ConstString(type_name_cstr), NULL, append, max_matches, types); 796 types.RemoveMismatchedTypes (type_class); 797 num_matches = types.GetSize(); 798 } 799 else 800 { 801 num_matches = FindTypes_Impl(sc, name, NULL, append, max_matches, types); 802 } 803 } 804 805 return num_matches; 806 807 } 808 809 SymbolVendor* 810 Module::GetSymbolVendor (bool can_create, lldb_private::Stream *feedback_strm) 811 { 812 Mutex::Locker locker (m_mutex); 813 if (m_did_load_symbol_vendor == false && can_create) 814 { 815 ObjectFile *obj_file = GetObjectFile (); 816 if (obj_file != NULL) 817 { 818 Timer scoped_timer(__PRETTY_FUNCTION__, __PRETTY_FUNCTION__); 819 m_symfile_ap.reset(SymbolVendor::FindPlugin(shared_from_this(), feedback_strm)); 820 m_did_load_symbol_vendor = true; 821 } 822 } 823 return m_symfile_ap.get(); 824 } 825 826 void 827 Module::SetFileSpecAndObjectName (const FileSpec &file, const ConstString &object_name) 828 { 829 // Container objects whose paths do not specify a file directly can call 830 // this function to correct the file and object names. 831 m_file = file; 832 m_mod_time = file.GetModificationTime(); 833 m_object_name = object_name; 834 } 835 836 const ArchSpec& 837 Module::GetArchitecture () const 838 { 839 return m_arch; 840 } 841 842 std::string 843 Module::GetSpecificationDescription () const 844 { 845 std::string spec(GetFileSpec().GetPath()); 846 if (m_object_name) 847 { 848 spec += '('; 849 spec += m_object_name.GetCString(); 850 spec += ')'; 851 } 852 return spec; 853 } 854 855 void 856 Module::GetDescription (Stream *s, lldb::DescriptionLevel level) 857 { 858 Mutex::Locker locker (m_mutex); 859 860 if (level >= eDescriptionLevelFull) 861 { 862 if (m_arch.IsValid()) 863 s->Printf("(%s) ", m_arch.GetArchitectureName()); 864 } 865 866 if (level == eDescriptionLevelBrief) 867 { 868 const char *filename = m_file.GetFilename().GetCString(); 869 if (filename) 870 s->PutCString (filename); 871 } 872 else 873 { 874 char path[PATH_MAX]; 875 if (m_file.GetPath(path, sizeof(path))) 876 s->PutCString(path); 877 } 878 879 const char *object_name = m_object_name.GetCString(); 880 if (object_name) 881 s->Printf("(%s)", object_name); 882 } 883 884 void 885 Module::ReportError (const char *format, ...) 886 { 887 if (format && format[0]) 888 { 889 StreamString strm; 890 strm.PutCString("error: "); 891 GetDescription(&strm, lldb::eDescriptionLevelBrief); 892 strm.PutChar (' '); 893 va_list args; 894 va_start (args, format); 895 strm.PrintfVarArg(format, args); 896 va_end (args); 897 898 const int format_len = strlen(format); 899 if (format_len > 0) 900 { 901 const char last_char = format[format_len-1]; 902 if (last_char != '\n' || last_char != '\r') 903 strm.EOL(); 904 } 905 Host::SystemLog (Host::eSystemLogError, "%s", strm.GetString().c_str()); 906 907 } 908 } 909 910 bool 911 Module::FileHasChanged () const 912 { 913 if (m_file_has_changed == false) 914 m_file_has_changed = (m_file.GetModificationTime() != m_mod_time); 915 return m_file_has_changed; 916 } 917 918 void 919 Module::ReportErrorIfModifyDetected (const char *format, ...) 920 { 921 if (m_first_file_changed_log == false) 922 { 923 if (FileHasChanged ()) 924 { 925 m_first_file_changed_log = true; 926 if (format) 927 { 928 StreamString strm; 929 strm.PutCString("error: the object file "); 930 GetDescription(&strm, lldb::eDescriptionLevelFull); 931 strm.PutCString (" has been modified\n"); 932 933 va_list args; 934 va_start (args, format); 935 strm.PrintfVarArg(format, args); 936 va_end (args); 937 938 const int format_len = strlen(format); 939 if (format_len > 0) 940 { 941 const char last_char = format[format_len-1]; 942 if (last_char != '\n' || last_char != '\r') 943 strm.EOL(); 944 } 945 strm.PutCString("The debug session should be aborted as the original debug information has been overwritten.\n"); 946 Host::SystemLog (Host::eSystemLogError, "%s", strm.GetString().c_str()); 947 } 948 } 949 } 950 } 951 952 void 953 Module::ReportWarning (const char *format, ...) 954 { 955 if (format && format[0]) 956 { 957 StreamString strm; 958 strm.PutCString("warning: "); 959 GetDescription(&strm, lldb::eDescriptionLevelFull); 960 strm.PutChar (' '); 961 962 va_list args; 963 va_start (args, format); 964 strm.PrintfVarArg(format, args); 965 va_end (args); 966 967 const int format_len = strlen(format); 968 if (format_len > 0) 969 { 970 const char last_char = format[format_len-1]; 971 if (last_char != '\n' || last_char != '\r') 972 strm.EOL(); 973 } 974 Host::SystemLog (Host::eSystemLogWarning, "%s", strm.GetString().c_str()); 975 } 976 } 977 978 void 979 Module::LogMessage (Log *log, const char *format, ...) 980 { 981 if (log) 982 { 983 StreamString log_message; 984 GetDescription(&log_message, lldb::eDescriptionLevelFull); 985 log_message.PutCString (": "); 986 va_list args; 987 va_start (args, format); 988 log_message.PrintfVarArg (format, args); 989 va_end (args); 990 log->PutCString(log_message.GetString().c_str()); 991 } 992 } 993 994 void 995 Module::LogMessageVerboseBacktrace (Log *log, const char *format, ...) 996 { 997 if (log) 998 { 999 StreamString log_message; 1000 GetDescription(&log_message, lldb::eDescriptionLevelFull); 1001 log_message.PutCString (": "); 1002 va_list args; 1003 va_start (args, format); 1004 log_message.PrintfVarArg (format, args); 1005 va_end (args); 1006 if (log->GetVerbose()) 1007 Host::Backtrace (log_message, 1024); 1008 log->PutCString(log_message.GetString().c_str()); 1009 } 1010 } 1011 1012 void 1013 Module::Dump(Stream *s) 1014 { 1015 Mutex::Locker locker (m_mutex); 1016 //s->Printf("%.*p: ", (int)sizeof(void*) * 2, this); 1017 s->Indent(); 1018 s->Printf("Module %s%s%s%s\n", 1019 m_file.GetPath().c_str(), 1020 m_object_name ? "(" : "", 1021 m_object_name ? m_object_name.GetCString() : "", 1022 m_object_name ? ")" : ""); 1023 1024 s->IndentMore(); 1025 ObjectFile *objfile = GetObjectFile (); 1026 1027 if (objfile) 1028 objfile->Dump(s); 1029 1030 SymbolVendor *symbols = GetSymbolVendor (); 1031 1032 if (symbols) 1033 symbols->Dump(s); 1034 1035 s->IndentLess(); 1036 } 1037 1038 1039 TypeList* 1040 Module::GetTypeList () 1041 { 1042 SymbolVendor *symbols = GetSymbolVendor (); 1043 if (symbols) 1044 return &symbols->GetTypeList(); 1045 return NULL; 1046 } 1047 1048 const ConstString & 1049 Module::GetObjectName() const 1050 { 1051 return m_object_name; 1052 } 1053 1054 ObjectFile * 1055 Module::GetObjectFile() 1056 { 1057 Mutex::Locker locker (m_mutex); 1058 if (m_did_load_objfile == false) 1059 { 1060 m_did_load_objfile = true; 1061 Timer scoped_timer(__PRETTY_FUNCTION__, 1062 "Module::GetObjectFile () module = %s", GetFileSpec().GetFilename().AsCString("")); 1063 DataBufferSP data_sp; 1064 lldb::offset_t data_offset = 0; 1065 m_objfile_sp = ObjectFile::FindPlugin (shared_from_this(), 1066 &m_file, 1067 m_object_offset, 1068 m_file.GetByteSize(), 1069 data_sp, 1070 data_offset); 1071 if (m_objfile_sp) 1072 { 1073 // Once we get the object file, update our module with the object file's 1074 // architecture since it might differ in vendor/os if some parts were 1075 // unknown. 1076 m_objfile_sp->GetArchitecture (m_arch); 1077 } 1078 } 1079 return m_objfile_sp.get(); 1080 } 1081 1082 1083 const Symbol * 1084 Module::FindFirstSymbolWithNameAndType (const ConstString &name, SymbolType symbol_type) 1085 { 1086 Timer scoped_timer(__PRETTY_FUNCTION__, 1087 "Module::FindFirstSymbolWithNameAndType (name = %s, type = %i)", 1088 name.AsCString(), 1089 symbol_type); 1090 ObjectFile *objfile = GetObjectFile(); 1091 if (objfile) 1092 { 1093 Symtab *symtab = objfile->GetSymtab(); 1094 if (symtab) 1095 return symtab->FindFirstSymbolWithNameAndType (name, symbol_type, Symtab::eDebugAny, Symtab::eVisibilityAny); 1096 } 1097 return NULL; 1098 } 1099 void 1100 Module::SymbolIndicesToSymbolContextList (Symtab *symtab, std::vector<uint32_t> &symbol_indexes, SymbolContextList &sc_list) 1101 { 1102 // No need to protect this call using m_mutex all other method calls are 1103 // already thread safe. 1104 1105 size_t num_indices = symbol_indexes.size(); 1106 if (num_indices > 0) 1107 { 1108 SymbolContext sc; 1109 CalculateSymbolContext (&sc); 1110 for (size_t i = 0; i < num_indices; i++) 1111 { 1112 sc.symbol = symtab->SymbolAtIndex (symbol_indexes[i]); 1113 if (sc.symbol) 1114 sc_list.Append (sc); 1115 } 1116 } 1117 } 1118 1119 size_t 1120 Module::FindFunctionSymbols (const ConstString &name, 1121 uint32_t name_type_mask, 1122 SymbolContextList& sc_list) 1123 { 1124 Timer scoped_timer(__PRETTY_FUNCTION__, 1125 "Module::FindSymbolsFunctions (name = %s, mask = 0x%8.8x)", 1126 name.AsCString(), 1127 name_type_mask); 1128 ObjectFile *objfile = GetObjectFile (); 1129 if (objfile) 1130 { 1131 Symtab *symtab = objfile->GetSymtab(); 1132 if (symtab) 1133 return symtab->FindFunctionSymbols (name, name_type_mask, sc_list); 1134 } 1135 return 0; 1136 } 1137 1138 size_t 1139 Module::FindSymbolsWithNameAndType (const ConstString &name, SymbolType symbol_type, SymbolContextList &sc_list) 1140 { 1141 // No need to protect this call using m_mutex all other method calls are 1142 // already thread safe. 1143 1144 1145 Timer scoped_timer(__PRETTY_FUNCTION__, 1146 "Module::FindSymbolsWithNameAndType (name = %s, type = %i)", 1147 name.AsCString(), 1148 symbol_type); 1149 const size_t initial_size = sc_list.GetSize(); 1150 ObjectFile *objfile = GetObjectFile (); 1151 if (objfile) 1152 { 1153 Symtab *symtab = objfile->GetSymtab(); 1154 if (symtab) 1155 { 1156 std::vector<uint32_t> symbol_indexes; 1157 symtab->FindAllSymbolsWithNameAndType (name, symbol_type, symbol_indexes); 1158 SymbolIndicesToSymbolContextList (symtab, symbol_indexes, sc_list); 1159 } 1160 } 1161 return sc_list.GetSize() - initial_size; 1162 } 1163 1164 size_t 1165 Module::FindSymbolsMatchingRegExAndType (const RegularExpression ®ex, SymbolType symbol_type, SymbolContextList &sc_list) 1166 { 1167 // No need to protect this call using m_mutex all other method calls are 1168 // already thread safe. 1169 1170 Timer scoped_timer(__PRETTY_FUNCTION__, 1171 "Module::FindSymbolsMatchingRegExAndType (regex = %s, type = %i)", 1172 regex.GetText(), 1173 symbol_type); 1174 const size_t initial_size = sc_list.GetSize(); 1175 ObjectFile *objfile = GetObjectFile (); 1176 if (objfile) 1177 { 1178 Symtab *symtab = objfile->GetSymtab(); 1179 if (symtab) 1180 { 1181 std::vector<uint32_t> symbol_indexes; 1182 symtab->FindAllSymbolsMatchingRexExAndType (regex, symbol_type, Symtab::eDebugAny, Symtab::eVisibilityAny, symbol_indexes); 1183 SymbolIndicesToSymbolContextList (symtab, symbol_indexes, sc_list); 1184 } 1185 } 1186 return sc_list.GetSize() - initial_size; 1187 } 1188 1189 const TimeValue & 1190 Module::GetModificationTime () const 1191 { 1192 return m_mod_time; 1193 } 1194 1195 void 1196 Module::SetSymbolFileFileSpec (const FileSpec &file) 1197 { 1198 m_symfile_spec = file; 1199 m_symfile_ap.reset(); 1200 m_did_load_symbol_vendor = false; 1201 } 1202 1203 1204 bool 1205 Module::IsExecutable () 1206 { 1207 if (GetObjectFile() == NULL) 1208 return false; 1209 else 1210 return GetObjectFile()->IsExecutable(); 1211 } 1212 1213 bool 1214 Module::IsLoadedInTarget (Target *target) 1215 { 1216 ObjectFile *obj_file = GetObjectFile(); 1217 if (obj_file) 1218 { 1219 SectionList *sections = obj_file->GetSectionList(); 1220 if (sections != NULL) 1221 { 1222 size_t num_sections = sections->GetSize(); 1223 for (size_t sect_idx = 0; sect_idx < num_sections; sect_idx++) 1224 { 1225 SectionSP section_sp = sections->GetSectionAtIndex(sect_idx); 1226 if (section_sp->GetLoadBaseAddress(target) != LLDB_INVALID_ADDRESS) 1227 { 1228 return true; 1229 } 1230 } 1231 } 1232 } 1233 return false; 1234 } 1235 1236 bool 1237 Module::LoadScriptingResourceInTarget (Target *target, Error& error) 1238 { 1239 if (!target) 1240 { 1241 error.SetErrorString("invalid destination Target"); 1242 return false; 1243 } 1244 1245 Debugger &debugger = target->GetDebugger(); 1246 const ScriptLanguage script_language = debugger.GetScriptLanguage(); 1247 if (script_language != eScriptLanguageNone) 1248 { 1249 1250 PlatformSP platform_sp(target->GetPlatform()); 1251 1252 if (!platform_sp) 1253 { 1254 error.SetErrorString("invalid Platform"); 1255 return false; 1256 } 1257 1258 FileSpecList file_specs = platform_sp->LocateExecutableScriptingResources (target, 1259 *this); 1260 1261 1262 const uint32_t num_specs = file_specs.GetSize(); 1263 if (num_specs) 1264 { 1265 ScriptInterpreter *script_interpreter = debugger.GetCommandInterpreter().GetScriptInterpreter(); 1266 if (script_interpreter) 1267 { 1268 for (uint32_t i=0; i<num_specs; ++i) 1269 { 1270 FileSpec scripting_fspec (file_specs.GetFileSpecAtIndex(i)); 1271 if (scripting_fspec && scripting_fspec.Exists()) 1272 { 1273 1274 StreamString scripting_stream; 1275 scripting_fspec.Dump(&scripting_stream); 1276 const bool can_reload = false; 1277 const bool init_lldb_globals = false; 1278 bool did_load = script_interpreter->LoadScriptingModule(scripting_stream.GetData(), can_reload, init_lldb_globals, error); 1279 if (!did_load) 1280 return false; 1281 } 1282 } 1283 } 1284 else 1285 { 1286 error.SetErrorString("invalid ScriptInterpreter"); 1287 return false; 1288 } 1289 } 1290 } 1291 return true; 1292 } 1293 1294 bool 1295 Module::SetArchitecture (const ArchSpec &new_arch) 1296 { 1297 if (!m_arch.IsValid()) 1298 { 1299 m_arch = new_arch; 1300 return true; 1301 } 1302 return m_arch.IsExactMatch(new_arch); 1303 } 1304 1305 bool 1306 Module::SetLoadAddress (Target &target, lldb::addr_t offset, bool &changed) 1307 { 1308 size_t num_loaded_sections = 0; 1309 ObjectFile *objfile = GetObjectFile(); 1310 if (objfile) 1311 { 1312 SectionList *section_list = objfile->GetSectionList (); 1313 if (section_list) 1314 { 1315 const size_t num_sections = section_list->GetSize(); 1316 size_t sect_idx = 0; 1317 for (sect_idx = 0; sect_idx < num_sections; ++sect_idx) 1318 { 1319 // Iterate through the object file sections to find the 1320 // first section that starts of file offset zero and that 1321 // has bytes in the file... 1322 SectionSP section_sp (section_list->GetSectionAtIndex (sect_idx)); 1323 // Only load non-thread specific sections when given a slide 1324 if (section_sp && !section_sp->IsThreadSpecific()) 1325 { 1326 if (target.GetSectionLoadList().SetSectionLoadAddress (section_sp, section_sp->GetFileAddress() + offset)) 1327 ++num_loaded_sections; 1328 } 1329 } 1330 } 1331 } 1332 changed = num_loaded_sections > 0; 1333 return num_loaded_sections > 0; 1334 } 1335 1336 1337 bool 1338 Module::MatchesModuleSpec (const ModuleSpec &module_ref) 1339 { 1340 const UUID &uuid = module_ref.GetUUID(); 1341 1342 if (uuid.IsValid()) 1343 { 1344 // If the UUID matches, then nothing more needs to match... 1345 if (uuid == GetUUID()) 1346 return true; 1347 else 1348 return false; 1349 } 1350 1351 const FileSpec &file_spec = module_ref.GetFileSpec(); 1352 if (file_spec) 1353 { 1354 if (!FileSpec::Equal (file_spec, m_file, file_spec.GetDirectory())) 1355 return false; 1356 } 1357 1358 const FileSpec &platform_file_spec = module_ref.GetPlatformFileSpec(); 1359 if (platform_file_spec) 1360 { 1361 if (!FileSpec::Equal (platform_file_spec, GetPlatformFileSpec (), platform_file_spec.GetDirectory())) 1362 return false; 1363 } 1364 1365 const ArchSpec &arch = module_ref.GetArchitecture(); 1366 if (arch.IsValid()) 1367 { 1368 if (!m_arch.IsCompatibleMatch(arch)) 1369 return false; 1370 } 1371 1372 const ConstString &object_name = module_ref.GetObjectName(); 1373 if (object_name) 1374 { 1375 if (object_name != GetObjectName()) 1376 return false; 1377 } 1378 return true; 1379 } 1380 1381 bool 1382 Module::FindSourceFile (const FileSpec &orig_spec, FileSpec &new_spec) const 1383 { 1384 Mutex::Locker locker (m_mutex); 1385 return m_source_mappings.FindFile (orig_spec, new_spec); 1386 } 1387 1388 bool 1389 Module::RemapSourceFile (const char *path, std::string &new_path) const 1390 { 1391 Mutex::Locker locker (m_mutex); 1392 return m_source_mappings.RemapPath(path, new_path); 1393 } 1394 1395 uint32_t 1396 Module::GetVersion (uint32_t *versions, uint32_t num_versions) 1397 { 1398 ObjectFile *obj_file = GetObjectFile(); 1399 if (obj_file) 1400 return obj_file->GetVersion (versions, num_versions); 1401 1402 if (versions && num_versions) 1403 { 1404 for (uint32_t i=0; i<num_versions; ++i) 1405 versions[i] = UINT32_MAX; 1406 } 1407 return 0; 1408 } 1409 1410 void 1411 Module::PrepareForFunctionNameLookup (const ConstString &name, 1412 uint32_t name_type_mask, 1413 ConstString &lookup_name, 1414 uint32_t &lookup_name_type_mask, 1415 bool &match_name_after_lookup) 1416 { 1417 const char *name_cstr = name.GetCString(); 1418 lookup_name_type_mask = eFunctionNameTypeNone; 1419 match_name_after_lookup = false; 1420 const char *base_name_start = NULL; 1421 const char *base_name_end = NULL; 1422 1423 if (name_type_mask & eFunctionNameTypeAuto) 1424 { 1425 if (CPPLanguageRuntime::IsCPPMangledName (name_cstr)) 1426 lookup_name_type_mask = eFunctionNameTypeFull; 1427 else if (ObjCLanguageRuntime::IsPossibleObjCMethodName (name_cstr)) 1428 lookup_name_type_mask = eFunctionNameTypeFull; 1429 else 1430 { 1431 if (ObjCLanguageRuntime::IsPossibleObjCSelector(name_cstr)) 1432 lookup_name_type_mask |= eFunctionNameTypeSelector; 1433 1434 if (CPPLanguageRuntime::IsPossibleCPPCall(name_cstr, base_name_start, base_name_end)) 1435 lookup_name_type_mask |= (eFunctionNameTypeMethod | eFunctionNameTypeBase); 1436 } 1437 } 1438 else 1439 { 1440 lookup_name_type_mask = name_type_mask; 1441 if (lookup_name_type_mask & eFunctionNameTypeMethod || name_type_mask & eFunctionNameTypeBase) 1442 { 1443 // If they've asked for a CPP method or function name and it can't be that, we don't 1444 // even need to search for CPP methods or names. 1445 if (!CPPLanguageRuntime::IsPossibleCPPCall(name_cstr, base_name_start, base_name_end)) 1446 { 1447 lookup_name_type_mask &= ~(eFunctionNameTypeMethod | eFunctionNameTypeBase); 1448 if (lookup_name_type_mask == eFunctionNameTypeNone) 1449 return; 1450 } 1451 } 1452 1453 if (lookup_name_type_mask & eFunctionNameTypeSelector) 1454 { 1455 if (!ObjCLanguageRuntime::IsPossibleObjCSelector(name_cstr)) 1456 { 1457 lookup_name_type_mask &= ~(eFunctionNameTypeSelector); 1458 if (lookup_name_type_mask == eFunctionNameTypeNone) 1459 return; 1460 } 1461 } 1462 } 1463 1464 if (base_name_start && 1465 base_name_end && 1466 base_name_start != name_cstr && 1467 base_name_start < base_name_end) 1468 { 1469 // The name supplied was a partial C++ path like "a::count". In this case we want to do a 1470 // lookup on the basename "count" and then make sure any matching results contain "a::count" 1471 // so that it would match "b::a::count" and "a::count". This is why we set "match_name_after_lookup" 1472 // to true 1473 lookup_name.SetCStringWithLength(base_name_start, base_name_end - base_name_start); 1474 match_name_after_lookup = true; 1475 } 1476 else 1477 { 1478 // The name is already correct, just use the exact name as supplied, and we won't need 1479 // to check if any matches contain "name" 1480 lookup_name = name; 1481 match_name_after_lookup = false; 1482 } 1483 }