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/Core/AddressResolverFileLine.h" 11 #include "lldb/Core/Error.h" 12 #include "lldb/Core/Module.h" 13 #include "lldb/Core/DataBuffer.h" 14 #include "lldb/Core/DataBufferHeap.h" 15 #include "lldb/Core/Log.h" 16 #include "lldb/Core/ModuleList.h" 17 #include "lldb/Core/ModuleSpec.h" 18 #include "lldb/Core/PluginManager.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/Symbol/CompileUnit.h" 28 #include "lldb/Symbol/ObjectFile.h" 29 #include "lldb/Symbol/SymbolContext.h" 30 #include "lldb/Symbol/SymbolFile.h" 31 #include "lldb/Symbol/SymbolVendor.h" 32 #include "lldb/Symbol/TypeSystem.h" 33 #include "lldb/Target/Language.h" 34 #include "lldb/Target/Process.h" 35 #include "lldb/Target/SectionLoadList.h" 36 #include "lldb/Target/Target.h" 37 #include "Plugins/Language/CPlusPlus/CPlusPlusLanguage.h" 38 #include "Plugins/Language/ObjC/ObjCLanguage.h" 39 #include "lldb/Symbol/TypeMap.h" 40 41 #include "Plugins/ObjectFile/JIT/ObjectFileJIT.h" 42 43 #include "llvm/Support/raw_os_ostream.h" 44 #include "llvm/Support/Signals.h" 45 46 using namespace lldb; 47 using namespace lldb_private; 48 49 // Shared pointers to modules track module lifetimes in 50 // targets and in the global module, but this collection 51 // will track all module objects that are still alive 52 typedef std::vector<Module *> ModuleCollection; 53 54 static ModuleCollection & 55 GetModuleCollection() 56 { 57 // This module collection needs to live past any module, so we could either make it a 58 // shared pointer in each module or just leak is. Since it is only an empty vector by 59 // the time all the modules have gone away, we just leak it for now. If we decide this 60 // is a big problem we can introduce a Finalize method that will tear everything down in 61 // a predictable order. 62 63 static ModuleCollection *g_module_collection = NULL; 64 if (g_module_collection == NULL) 65 g_module_collection = new ModuleCollection(); 66 67 return *g_module_collection; 68 } 69 70 Mutex * 71 Module::GetAllocationModuleCollectionMutex() 72 { 73 // NOTE: The mutex below must be leaked since the global module list in 74 // the ModuleList class will get torn at some point, and we can't know 75 // if it will tear itself down before the "g_module_collection_mutex" below 76 // will. So we leak a Mutex object below to safeguard against that 77 78 static Mutex *g_module_collection_mutex = NULL; 79 if (g_module_collection_mutex == NULL) 80 g_module_collection_mutex = new Mutex (Mutex::eMutexTypeRecursive); // NOTE: known leak 81 return g_module_collection_mutex; 82 } 83 84 size_t 85 Module::GetNumberAllocatedModules () 86 { 87 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 88 return GetModuleCollection().size(); 89 } 90 91 Module * 92 Module::GetAllocatedModuleAtIndex (size_t idx) 93 { 94 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 95 ModuleCollection &modules = GetModuleCollection(); 96 if (idx < modules.size()) 97 return modules[idx]; 98 return NULL; 99 } 100 #if 0 101 102 // These functions help us to determine if modules are still loaded, yet don't require that 103 // you have a command interpreter and can easily be called from an external debugger. 104 namespace lldb { 105 106 void 107 ClearModuleInfo (void) 108 { 109 const bool mandatory = true; 110 ModuleList::RemoveOrphanSharedModules(mandatory); 111 } 112 113 void 114 DumpModuleInfo (void) 115 { 116 Mutex::Locker locker (Module::GetAllocationModuleCollectionMutex()); 117 ModuleCollection &modules = GetModuleCollection(); 118 const size_t count = modules.size(); 119 printf ("%s: %" PRIu64 " modules:\n", __PRETTY_FUNCTION__, (uint64_t)count); 120 for (size_t i=0; i<count; ++i) 121 { 122 123 StreamString strm; 124 Module *module = modules[i]; 125 const bool in_shared_module_list = ModuleList::ModuleIsInCache (module); 126 module->GetDescription(&strm, eDescriptionLevelFull); 127 printf ("%p: shared = %i, ref_count = %3u, module = %s\n", 128 module, 129 in_shared_module_list, 130 (uint32_t)module->use_count(), 131 strm.GetString().c_str()); 132 } 133 } 134 } 135 136 #endif 137 138 Module::Module (const ModuleSpec &module_spec) : 139 m_mutex (Mutex::eMutexTypeRecursive), 140 m_mod_time (), 141 m_arch (), 142 m_uuid (), 143 m_file (), 144 m_platform_file(), 145 m_remote_install_file(), 146 m_symfile_spec (), 147 m_object_name (), 148 m_object_offset (), 149 m_object_mod_time (), 150 m_objfile_sp (), 151 m_symfile_ap (), 152 m_type_system_map(), 153 m_source_mappings (), 154 m_sections_ap(), 155 m_did_load_objfile (false), 156 m_did_load_symbol_vendor (false), 157 m_did_parse_uuid (false), 158 m_file_has_changed (false), 159 m_first_file_changed_log (false) 160 { 161 // Scope for locker below... 162 { 163 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 164 GetModuleCollection().push_back(this); 165 } 166 167 Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_OBJECT|LIBLLDB_LOG_MODULES)); 168 if (log) 169 log->Printf ("%p Module::Module((%s) '%s%s%s%s')", 170 static_cast<void*>(this), 171 module_spec.GetArchitecture().GetArchitectureName(), 172 module_spec.GetFileSpec().GetPath().c_str(), 173 module_spec.GetObjectName().IsEmpty() ? "" : "(", 174 module_spec.GetObjectName().IsEmpty() ? "" : module_spec.GetObjectName().AsCString(""), 175 module_spec.GetObjectName().IsEmpty() ? "" : ")"); 176 177 // First extract all module specifications from the file using the local 178 // file path. If there are no specifications, then don't fill anything in 179 ModuleSpecList modules_specs; 180 if (ObjectFile::GetModuleSpecifications(module_spec.GetFileSpec(), 0, 0, modules_specs) == 0) 181 return; 182 183 // Now make sure that one of the module specifications matches what we just 184 // extract. We might have a module specification that specifies a file "/usr/lib/dyld" 185 // with UUID XXX, but we might have a local version of "/usr/lib/dyld" that has 186 // UUID YYY and we don't want those to match. If they don't match, just don't 187 // fill any ivars in so we don't accidentally grab the wrong file later since 188 // they don't match... 189 ModuleSpec matching_module_spec; 190 if (modules_specs.FindMatchingModuleSpec(module_spec, matching_module_spec) == 0) 191 return; 192 193 if (module_spec.GetFileSpec()) 194 m_mod_time = module_spec.GetFileSpec().GetModificationTime(); 195 else if (matching_module_spec.GetFileSpec()) 196 m_mod_time = matching_module_spec.GetFileSpec().GetModificationTime(); 197 198 // Copy the architecture from the actual spec if we got one back, else use the one that was specified 199 if (matching_module_spec.GetArchitecture().IsValid()) 200 m_arch = matching_module_spec.GetArchitecture(); 201 else if (module_spec.GetArchitecture().IsValid()) 202 m_arch = module_spec.GetArchitecture(); 203 204 // Copy the file spec over and use the specified one (if there was one) so we 205 // don't use a path that might have gotten resolved a path in 'matching_module_spec' 206 if (module_spec.GetFileSpec()) 207 m_file = module_spec.GetFileSpec(); 208 else if (matching_module_spec.GetFileSpec()) 209 m_file = matching_module_spec.GetFileSpec(); 210 211 // Copy the platform file spec over 212 if (module_spec.GetPlatformFileSpec()) 213 m_platform_file = module_spec.GetPlatformFileSpec(); 214 else if (matching_module_spec.GetPlatformFileSpec()) 215 m_platform_file = matching_module_spec.GetPlatformFileSpec(); 216 217 // Copy the symbol file spec over 218 if (module_spec.GetSymbolFileSpec()) 219 m_symfile_spec = module_spec.GetSymbolFileSpec(); 220 else if (matching_module_spec.GetSymbolFileSpec()) 221 m_symfile_spec = matching_module_spec.GetSymbolFileSpec(); 222 223 // Copy the object name over 224 if (matching_module_spec.GetObjectName()) 225 m_object_name = matching_module_spec.GetObjectName(); 226 else 227 m_object_name = module_spec.GetObjectName(); 228 229 // Always trust the object offset (file offset) and object modification 230 // time (for mod time in a BSD static archive) of from the matching 231 // module specification 232 m_object_offset = matching_module_spec.GetObjectOffset(); 233 m_object_mod_time = matching_module_spec.GetObjectModificationTime(); 234 235 } 236 237 Module::Module(const FileSpec& file_spec, 238 const ArchSpec& arch, 239 const ConstString *object_name, 240 lldb::offset_t object_offset, 241 const TimeValue *object_mod_time_ptr) : 242 m_mutex (Mutex::eMutexTypeRecursive), 243 m_mod_time (file_spec.GetModificationTime()), 244 m_arch (arch), 245 m_uuid (), 246 m_file (file_spec), 247 m_platform_file(), 248 m_remote_install_file (), 249 m_symfile_spec (), 250 m_object_name (), 251 m_object_offset (object_offset), 252 m_object_mod_time (), 253 m_objfile_sp (), 254 m_symfile_ap (), 255 m_type_system_map(), 256 m_source_mappings (), 257 m_sections_ap(), 258 m_did_load_objfile (false), 259 m_did_load_symbol_vendor (false), 260 m_did_parse_uuid (false), 261 m_file_has_changed (false), 262 m_first_file_changed_log (false) 263 { 264 // Scope for locker below... 265 { 266 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 267 GetModuleCollection().push_back(this); 268 } 269 270 if (object_name) 271 m_object_name = *object_name; 272 273 if (object_mod_time_ptr) 274 m_object_mod_time = *object_mod_time_ptr; 275 276 Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_OBJECT|LIBLLDB_LOG_MODULES)); 277 if (log) 278 log->Printf ("%p Module::Module((%s) '%s%s%s%s')", 279 static_cast<void*>(this), m_arch.GetArchitectureName(), 280 m_file.GetPath().c_str(), 281 m_object_name.IsEmpty() ? "" : "(", 282 m_object_name.IsEmpty() ? "" : m_object_name.AsCString(""), 283 m_object_name.IsEmpty() ? "" : ")"); 284 } 285 286 Module::Module () : 287 m_mutex (Mutex::eMutexTypeRecursive), 288 m_mod_time (), 289 m_arch (), 290 m_uuid (), 291 m_file (), 292 m_platform_file(), 293 m_remote_install_file (), 294 m_symfile_spec (), 295 m_object_name (), 296 m_object_offset (0), 297 m_object_mod_time (), 298 m_objfile_sp (), 299 m_symfile_ap (), 300 m_type_system_map(), 301 m_source_mappings (), 302 m_sections_ap(), 303 m_did_load_objfile (false), 304 m_did_load_symbol_vendor (false), 305 m_did_parse_uuid (false), 306 m_file_has_changed (false), 307 m_first_file_changed_log (false) 308 { 309 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 310 GetModuleCollection().push_back(this); 311 } 312 313 Module::~Module() 314 { 315 // Lock our module down while we tear everything down to make sure 316 // we don't get any access to the module while it is being destroyed 317 Mutex::Locker locker (m_mutex); 318 // Scope for locker below... 319 { 320 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 321 ModuleCollection &modules = GetModuleCollection(); 322 ModuleCollection::iterator end = modules.end(); 323 ModuleCollection::iterator pos = std::find(modules.begin(), end, this); 324 assert (pos != end); 325 modules.erase(pos); 326 } 327 Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_OBJECT|LIBLLDB_LOG_MODULES)); 328 if (log) 329 log->Printf ("%p Module::~Module((%s) '%s%s%s%s')", 330 static_cast<void*>(this), 331 m_arch.GetArchitectureName(), 332 m_file.GetPath().c_str(), 333 m_object_name.IsEmpty() ? "" : "(", 334 m_object_name.IsEmpty() ? "" : m_object_name.AsCString(""), 335 m_object_name.IsEmpty() ? "" : ")"); 336 // Release any auto pointers before we start tearing down our member 337 // variables since the object file and symbol files might need to make 338 // function calls back into this module object. The ordering is important 339 // here because symbol files can require the module object file. So we tear 340 // down the symbol file first, then the object file. 341 m_sections_ap.reset(); 342 m_symfile_ap.reset(); 343 m_objfile_sp.reset(); 344 } 345 346 ObjectFile * 347 Module::GetMemoryObjectFile (const lldb::ProcessSP &process_sp, lldb::addr_t header_addr, Error &error, size_t size_to_read) 348 { 349 if (m_objfile_sp) 350 { 351 error.SetErrorString ("object file already exists"); 352 } 353 else 354 { 355 Mutex::Locker locker (m_mutex); 356 if (process_sp) 357 { 358 m_did_load_objfile = true; 359 std::unique_ptr<DataBufferHeap> data_ap (new DataBufferHeap (size_to_read, 0)); 360 Error readmem_error; 361 const size_t bytes_read = process_sp->ReadMemory (header_addr, 362 data_ap->GetBytes(), 363 data_ap->GetByteSize(), 364 readmem_error); 365 if (bytes_read == size_to_read) 366 { 367 DataBufferSP data_sp(data_ap.release()); 368 m_objfile_sp = ObjectFile::FindPlugin(shared_from_this(), process_sp, header_addr, data_sp); 369 if (m_objfile_sp) 370 { 371 StreamString s; 372 s.Printf("0x%16.16" PRIx64, header_addr); 373 m_object_name.SetCString (s.GetData()); 374 375 // Once we get the object file, update our module with the object file's 376 // architecture since it might differ in vendor/os if some parts were 377 // unknown. 378 m_objfile_sp->GetArchitecture (m_arch); 379 } 380 else 381 { 382 error.SetErrorString ("unable to find suitable object file plug-in"); 383 } 384 } 385 else 386 { 387 error.SetErrorStringWithFormat ("unable to read header from memory: %s", readmem_error.AsCString()); 388 } 389 } 390 else 391 { 392 error.SetErrorString ("invalid process"); 393 } 394 } 395 return m_objfile_sp.get(); 396 } 397 398 399 const lldb_private::UUID& 400 Module::GetUUID() 401 { 402 if (m_did_parse_uuid.load() == false) 403 { 404 Mutex::Locker locker (m_mutex); 405 if (m_did_parse_uuid.load() == false) 406 { 407 ObjectFile * obj_file = GetObjectFile (); 408 409 if (obj_file != NULL) 410 { 411 obj_file->GetUUID(&m_uuid); 412 m_did_parse_uuid = true; 413 } 414 } 415 } 416 return m_uuid; 417 } 418 419 TypeSystem * 420 Module::GetTypeSystemForLanguage (LanguageType language) 421 { 422 return m_type_system_map.GetTypeSystemForLanguage(language, this, true); 423 } 424 425 void 426 Module::ParseAllDebugSymbols() 427 { 428 Mutex::Locker locker (m_mutex); 429 size_t num_comp_units = GetNumCompileUnits(); 430 if (num_comp_units == 0) 431 return; 432 433 SymbolContext sc; 434 sc.module_sp = shared_from_this(); 435 SymbolVendor *symbols = GetSymbolVendor (); 436 437 for (size_t cu_idx = 0; cu_idx < num_comp_units; cu_idx++) 438 { 439 sc.comp_unit = symbols->GetCompileUnitAtIndex(cu_idx).get(); 440 if (sc.comp_unit) 441 { 442 sc.function = NULL; 443 symbols->ParseVariablesForContext(sc); 444 445 symbols->ParseCompileUnitFunctions(sc); 446 447 for (size_t func_idx = 0; (sc.function = sc.comp_unit->GetFunctionAtIndex(func_idx).get()) != NULL; ++func_idx) 448 { 449 symbols->ParseFunctionBlocks(sc); 450 451 // Parse the variables for this function and all its blocks 452 symbols->ParseVariablesForContext(sc); 453 } 454 455 456 // Parse all types for this compile unit 457 sc.function = NULL; 458 symbols->ParseTypes(sc); 459 } 460 } 461 } 462 463 void 464 Module::CalculateSymbolContext(SymbolContext* sc) 465 { 466 sc->module_sp = shared_from_this(); 467 } 468 469 ModuleSP 470 Module::CalculateSymbolContextModule () 471 { 472 return shared_from_this(); 473 } 474 475 void 476 Module::DumpSymbolContext(Stream *s) 477 { 478 s->Printf(", Module{%p}", static_cast<void*>(this)); 479 } 480 481 size_t 482 Module::GetNumCompileUnits() 483 { 484 Mutex::Locker locker (m_mutex); 485 Timer scoped_timer(__PRETTY_FUNCTION__, 486 "Module::GetNumCompileUnits (module = %p)", 487 static_cast<void*>(this)); 488 SymbolVendor *symbols = GetSymbolVendor (); 489 if (symbols) 490 return symbols->GetNumCompileUnits(); 491 return 0; 492 } 493 494 CompUnitSP 495 Module::GetCompileUnitAtIndex (size_t index) 496 { 497 Mutex::Locker locker (m_mutex); 498 size_t num_comp_units = GetNumCompileUnits (); 499 CompUnitSP cu_sp; 500 501 if (index < num_comp_units) 502 { 503 SymbolVendor *symbols = GetSymbolVendor (); 504 if (symbols) 505 cu_sp = symbols->GetCompileUnitAtIndex(index); 506 } 507 return cu_sp; 508 } 509 510 bool 511 Module::ResolveFileAddress (lldb::addr_t vm_addr, Address& so_addr) 512 { 513 Mutex::Locker locker (m_mutex); 514 Timer scoped_timer(__PRETTY_FUNCTION__, "Module::ResolveFileAddress (vm_addr = 0x%" PRIx64 ")", vm_addr); 515 SectionList *section_list = GetSectionList(); 516 if (section_list) 517 return so_addr.ResolveAddressUsingFileSections(vm_addr, section_list); 518 return false; 519 } 520 521 uint32_t 522 Module::ResolveSymbolContextForAddress (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc, 523 bool resolve_tail_call_address) 524 { 525 Mutex::Locker locker (m_mutex); 526 uint32_t resolved_flags = 0; 527 528 // Clear the result symbol context in case we don't find anything, but don't clear the target 529 sc.Clear(false); 530 531 // Get the section from the section/offset address. 532 SectionSP section_sp (so_addr.GetSection()); 533 534 // Make sure the section matches this module before we try and match anything 535 if (section_sp && section_sp->GetModule().get() == this) 536 { 537 // If the section offset based address resolved itself, then this 538 // is the right module. 539 sc.module_sp = shared_from_this(); 540 resolved_flags |= eSymbolContextModule; 541 542 SymbolVendor* sym_vendor = GetSymbolVendor(); 543 if (!sym_vendor) 544 return resolved_flags; 545 546 // Resolve the compile unit, function, block, line table or line 547 // entry if requested. 548 if (resolve_scope & eSymbolContextCompUnit || 549 resolve_scope & eSymbolContextFunction || 550 resolve_scope & eSymbolContextBlock || 551 resolve_scope & eSymbolContextLineEntry ) 552 { 553 resolved_flags |= sym_vendor->ResolveSymbolContext (so_addr, resolve_scope, sc); 554 } 555 556 // Resolve the symbol if requested, but don't re-look it up if we've already found it. 557 if (resolve_scope & eSymbolContextSymbol && !(resolved_flags & eSymbolContextSymbol)) 558 { 559 Symtab *symtab = sym_vendor->GetSymtab(); 560 if (symtab && so_addr.IsSectionOffset()) 561 { 562 Symbol *matching_symbol = nullptr; 563 symtab->ForEachSymbolContainingFileAddresss (so_addr.GetFileAddress(), [&matching_symbol](Symbol *symbol) -> bool { 564 if (symbol->GetType() != eSymbolTypeInvalid) 565 { 566 matching_symbol = symbol; 567 return false; // Stop iterating 568 } 569 return true; // Keep iterating 570 }); 571 sc.symbol = matching_symbol; 572 if (!sc.symbol && 573 resolve_scope & eSymbolContextFunction && !(resolved_flags & eSymbolContextFunction)) 574 { 575 bool verify_unique = false; // No need to check again since ResolveSymbolContext failed to find a symbol at this address. 576 if (ObjectFile *obj_file = sc.module_sp->GetObjectFile()) 577 sc.symbol = obj_file->ResolveSymbolForAddress(so_addr, verify_unique); 578 } 579 580 if (sc.symbol) 581 { 582 if (sc.symbol->IsSynthetic()) 583 { 584 // We have a synthetic symbol so lets check if the object file 585 // from the symbol file in the symbol vendor is different than 586 // the object file for the module, and if so search its symbol 587 // table to see if we can come up with a better symbol. For example 588 // dSYM files on MacOSX have an unstripped symbol table inside of 589 // them. 590 ObjectFile *symtab_objfile = symtab->GetObjectFile(); 591 if (symtab_objfile && symtab_objfile->IsStripped()) 592 { 593 SymbolFile *symfile = sym_vendor->GetSymbolFile(); 594 if (symfile) 595 { 596 ObjectFile *symfile_objfile = symfile->GetObjectFile(); 597 if (symfile_objfile != symtab_objfile) 598 { 599 Symtab *symfile_symtab = symfile_objfile->GetSymtab(); 600 if (symfile_symtab) 601 { 602 Symbol *symbol = symfile_symtab->FindSymbolContainingFileAddress(so_addr.GetFileAddress()); 603 if (symbol && !symbol->IsSynthetic()) 604 { 605 sc.symbol = symbol; 606 } 607 } 608 } 609 } 610 } 611 } 612 resolved_flags |= eSymbolContextSymbol; 613 } 614 } 615 } 616 617 // For function symbols, so_addr may be off by one. This is a convention consistent 618 // with FDE row indices in eh_frame sections, but requires extra logic here to permit 619 // symbol lookup for disassembly and unwind. 620 if (resolve_scope & eSymbolContextSymbol && !(resolved_flags & eSymbolContextSymbol) && 621 resolve_tail_call_address && so_addr.IsSectionOffset()) 622 { 623 Address previous_addr = so_addr; 624 previous_addr.Slide(-1); 625 626 bool do_resolve_tail_call_address = false; // prevent recursion 627 const uint32_t flags = ResolveSymbolContextForAddress(previous_addr, resolve_scope, sc, 628 do_resolve_tail_call_address); 629 if (flags & eSymbolContextSymbol) 630 { 631 AddressRange addr_range; 632 if (sc.GetAddressRange (eSymbolContextFunction | eSymbolContextSymbol, 0, false, addr_range)) 633 { 634 if (addr_range.GetBaseAddress().GetSection() == so_addr.GetSection()) 635 { 636 // If the requested address is one past the address range of a function (i.e. a tail call), 637 // or the decremented address is the start of a function (i.e. some forms of trampoline), 638 // indicate that the symbol has been resolved. 639 if (so_addr.GetOffset() == addr_range.GetBaseAddress().GetOffset() || 640 so_addr.GetOffset() == addr_range.GetBaseAddress().GetOffset() + addr_range.GetByteSize()) 641 { 642 resolved_flags |= flags; 643 } 644 } 645 else 646 { 647 sc.symbol = nullptr; // Don't trust the symbol if the sections didn't match. 648 } 649 } 650 } 651 } 652 } 653 return resolved_flags; 654 } 655 656 uint32_t 657 Module::ResolveSymbolContextForFilePath 658 ( 659 const char *file_path, 660 uint32_t line, 661 bool check_inlines, 662 uint32_t resolve_scope, 663 SymbolContextList& sc_list 664 ) 665 { 666 FileSpec file_spec(file_path, false); 667 return ResolveSymbolContextsForFileSpec (file_spec, line, check_inlines, resolve_scope, sc_list); 668 } 669 670 uint32_t 671 Module::ResolveSymbolContextsForFileSpec (const FileSpec &file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list) 672 { 673 Mutex::Locker locker (m_mutex); 674 Timer scoped_timer(__PRETTY_FUNCTION__, 675 "Module::ResolveSymbolContextForFilePath (%s:%u, check_inlines = %s, resolve_scope = 0x%8.8x)", 676 file_spec.GetPath().c_str(), 677 line, 678 check_inlines ? "yes" : "no", 679 resolve_scope); 680 681 const uint32_t initial_count = sc_list.GetSize(); 682 683 SymbolVendor *symbols = GetSymbolVendor (); 684 if (symbols) 685 symbols->ResolveSymbolContext (file_spec, line, check_inlines, resolve_scope, sc_list); 686 687 return sc_list.GetSize() - initial_count; 688 } 689 690 691 size_t 692 Module::FindGlobalVariables (const ConstString &name, 693 const CompilerDeclContext *parent_decl_ctx, 694 bool append, 695 size_t max_matches, 696 VariableList& variables) 697 { 698 SymbolVendor *symbols = GetSymbolVendor (); 699 if (symbols) 700 return symbols->FindGlobalVariables(name, parent_decl_ctx, append, max_matches, variables); 701 return 0; 702 } 703 704 size_t 705 Module::FindGlobalVariables (const RegularExpression& regex, 706 bool append, 707 size_t max_matches, 708 VariableList& variables) 709 { 710 SymbolVendor *symbols = GetSymbolVendor (); 711 if (symbols) 712 return symbols->FindGlobalVariables(regex, append, max_matches, variables); 713 return 0; 714 } 715 716 size_t 717 Module::FindCompileUnits (const FileSpec &path, 718 bool append, 719 SymbolContextList &sc_list) 720 { 721 if (!append) 722 sc_list.Clear(); 723 724 const size_t start_size = sc_list.GetSize(); 725 const size_t num_compile_units = GetNumCompileUnits(); 726 SymbolContext sc; 727 sc.module_sp = shared_from_this(); 728 const bool compare_directory = (bool)path.GetDirectory(); 729 for (size_t i=0; i<num_compile_units; ++i) 730 { 731 sc.comp_unit = GetCompileUnitAtIndex(i).get(); 732 if (sc.comp_unit) 733 { 734 if (FileSpec::Equal (*sc.comp_unit, path, compare_directory)) 735 sc_list.Append(sc); 736 } 737 } 738 return sc_list.GetSize() - start_size; 739 } 740 741 size_t 742 Module::FindFunctions (const ConstString &name, 743 const CompilerDeclContext *parent_decl_ctx, 744 uint32_t name_type_mask, 745 bool include_symbols, 746 bool include_inlines, 747 bool append, 748 SymbolContextList& sc_list) 749 { 750 if (!append) 751 sc_list.Clear(); 752 753 const size_t old_size = sc_list.GetSize(); 754 755 // Find all the functions (not symbols, but debug information functions... 756 SymbolVendor *symbols = GetSymbolVendor (); 757 758 if (name_type_mask & eFunctionNameTypeAuto) 759 { 760 ConstString lookup_name; 761 uint32_t lookup_name_type_mask = 0; 762 bool match_name_after_lookup = false; 763 Module::PrepareForFunctionNameLookup (name, 764 name_type_mask, 765 eLanguageTypeUnknown, // TODO: add support 766 lookup_name, 767 lookup_name_type_mask, 768 match_name_after_lookup); 769 770 if (symbols) 771 { 772 symbols->FindFunctions(lookup_name, 773 parent_decl_ctx, 774 lookup_name_type_mask, 775 include_inlines, 776 append, 777 sc_list); 778 779 // Now check our symbol table for symbols that are code symbols if requested 780 if (include_symbols) 781 { 782 Symtab *symtab = symbols->GetSymtab(); 783 if (symtab) 784 symtab->FindFunctionSymbols(lookup_name, lookup_name_type_mask, sc_list); 785 } 786 } 787 788 if (match_name_after_lookup) 789 { 790 SymbolContext sc; 791 size_t i = old_size; 792 while (i<sc_list.GetSize()) 793 { 794 if (sc_list.GetContextAtIndex(i, sc)) 795 { 796 const char *func_name = sc.GetFunctionName().GetCString(); 797 if (func_name && strstr (func_name, name.GetCString()) == NULL) 798 { 799 // Remove the current context 800 sc_list.RemoveContextAtIndex(i); 801 // Don't increment i and continue in the loop 802 continue; 803 } 804 } 805 ++i; 806 } 807 } 808 } 809 else 810 { 811 if (symbols) 812 { 813 symbols->FindFunctions(name, parent_decl_ctx, name_type_mask, include_inlines, append, sc_list); 814 815 // Now check our symbol table for symbols that are code symbols if requested 816 if (include_symbols) 817 { 818 Symtab *symtab = symbols->GetSymtab(); 819 if (symtab) 820 symtab->FindFunctionSymbols(name, name_type_mask, sc_list); 821 } 822 } 823 } 824 825 return sc_list.GetSize() - old_size; 826 } 827 828 size_t 829 Module::FindFunctions (const RegularExpression& regex, 830 bool include_symbols, 831 bool include_inlines, 832 bool append, 833 SymbolContextList& sc_list) 834 { 835 if (!append) 836 sc_list.Clear(); 837 838 const size_t start_size = sc_list.GetSize(); 839 840 SymbolVendor *symbols = GetSymbolVendor (); 841 if (symbols) 842 { 843 symbols->FindFunctions(regex, include_inlines, append, sc_list); 844 845 // Now check our symbol table for symbols that are code symbols if requested 846 if (include_symbols) 847 { 848 Symtab *symtab = symbols->GetSymtab(); 849 if (symtab) 850 { 851 std::vector<uint32_t> symbol_indexes; 852 symtab->AppendSymbolIndexesMatchingRegExAndType (regex, eSymbolTypeAny, Symtab::eDebugAny, Symtab::eVisibilityAny, symbol_indexes); 853 const size_t num_matches = symbol_indexes.size(); 854 if (num_matches) 855 { 856 SymbolContext sc(this); 857 const size_t end_functions_added_index = sc_list.GetSize(); 858 size_t num_functions_added_to_sc_list = end_functions_added_index - start_size; 859 if (num_functions_added_to_sc_list == 0) 860 { 861 // No functions were added, just symbols, so we can just append them 862 for (size_t i=0; i<num_matches; ++i) 863 { 864 sc.symbol = symtab->SymbolAtIndex(symbol_indexes[i]); 865 SymbolType sym_type = sc.symbol->GetType(); 866 if (sc.symbol && (sym_type == eSymbolTypeCode || 867 sym_type == eSymbolTypeResolver)) 868 sc_list.Append(sc); 869 } 870 } 871 else 872 { 873 typedef std::map<lldb::addr_t, uint32_t> FileAddrToIndexMap; 874 FileAddrToIndexMap file_addr_to_index; 875 for (size_t i=start_size; i<end_functions_added_index; ++i) 876 { 877 const SymbolContext &sc = sc_list[i]; 878 if (sc.block) 879 continue; 880 file_addr_to_index[sc.function->GetAddressRange().GetBaseAddress().GetFileAddress()] = i; 881 } 882 883 FileAddrToIndexMap::const_iterator end = file_addr_to_index.end(); 884 // Functions were added so we need to merge symbols into any 885 // existing function symbol contexts 886 for (size_t i=start_size; i<num_matches; ++i) 887 { 888 sc.symbol = symtab->SymbolAtIndex(symbol_indexes[i]); 889 SymbolType sym_type = sc.symbol->GetType(); 890 if (sc.symbol && sc.symbol->ValueIsAddress() && (sym_type == eSymbolTypeCode || sym_type == eSymbolTypeResolver)) 891 { 892 FileAddrToIndexMap::const_iterator pos = file_addr_to_index.find(sc.symbol->GetAddressRef().GetFileAddress()); 893 if (pos == end) 894 sc_list.Append(sc); 895 else 896 sc_list[pos->second].symbol = sc.symbol; 897 } 898 } 899 } 900 } 901 } 902 } 903 } 904 return sc_list.GetSize() - start_size; 905 } 906 907 void 908 Module::FindAddressesForLine (const lldb::TargetSP target_sp, 909 const FileSpec &file, uint32_t line, 910 Function *function, 911 std::vector<Address> &output_local, std::vector<Address> &output_extern) 912 { 913 SearchFilterByModule filter(target_sp, m_file); 914 AddressResolverFileLine resolver(file, line, true); 915 resolver.ResolveAddress (filter); 916 917 for (size_t n=0;n<resolver.GetNumberOfAddresses();n++) 918 { 919 Address addr = resolver.GetAddressRangeAtIndex(n).GetBaseAddress(); 920 Function *f = addr.CalculateSymbolContextFunction(); 921 if (f && f == function) 922 output_local.push_back (addr); 923 else 924 output_extern.push_back (addr); 925 } 926 } 927 928 size_t 929 Module::FindTypes_Impl (const SymbolContext& sc, 930 const ConstString &name, 931 const CompilerDeclContext *parent_decl_ctx, 932 bool append, 933 size_t max_matches, 934 TypeMap& types) 935 { 936 Timer scoped_timer(__PRETTY_FUNCTION__, __PRETTY_FUNCTION__); 937 if (sc.module_sp.get() == NULL || sc.module_sp.get() == this) 938 { 939 SymbolVendor *symbols = GetSymbolVendor (); 940 if (symbols) 941 return symbols->FindTypes(sc, name, parent_decl_ctx, append, max_matches, types); 942 } 943 return 0; 944 } 945 946 size_t 947 Module::FindTypesInNamespace (const SymbolContext& sc, 948 const ConstString &type_name, 949 const CompilerDeclContext *parent_decl_ctx, 950 size_t max_matches, 951 TypeList& type_list) 952 { 953 const bool append = true; 954 TypeMap types_map; 955 size_t num_types = FindTypes_Impl(sc, type_name, parent_decl_ctx, append, max_matches, types_map); 956 if (num_types > 0) 957 sc.SortTypeList(types_map, type_list); 958 return num_types; 959 } 960 961 lldb::TypeSP 962 Module::FindFirstType (const SymbolContext& sc, 963 const ConstString &name, 964 bool exact_match) 965 { 966 TypeList type_list; 967 const size_t num_matches = FindTypes (sc, name, exact_match, 1, type_list); 968 if (num_matches) 969 return type_list.GetTypeAtIndex(0); 970 return TypeSP(); 971 } 972 973 974 size_t 975 Module::FindTypes (const SymbolContext& sc, 976 const ConstString &name, 977 bool exact_match, 978 size_t max_matches, 979 TypeList& types) 980 { 981 size_t num_matches = 0; 982 const char *type_name_cstr = name.GetCString(); 983 std::string type_scope; 984 std::string type_basename; 985 const bool append = true; 986 TypeClass type_class = eTypeClassAny; 987 TypeMap typesmap; 988 if (Type::GetTypeScopeAndBasename (type_name_cstr, type_scope, type_basename, type_class)) 989 { 990 // Check if "name" starts with "::" which means the qualified type starts 991 // from the root namespace and implies and exact match. The typenames we 992 // get back from clang do not start with "::" so we need to strip this off 993 // in order to get the qualified names to match 994 995 if (type_scope.size() >= 2 && type_scope[0] == ':' && type_scope[1] == ':') 996 { 997 type_scope.erase(0,2); 998 exact_match = true; 999 } 1000 ConstString type_basename_const_str (type_basename.c_str()); 1001 if (FindTypes_Impl(sc, type_basename_const_str, NULL, append, max_matches, typesmap)) 1002 { 1003 typesmap.RemoveMismatchedTypes (type_scope, type_basename, type_class, exact_match); 1004 num_matches = typesmap.GetSize(); 1005 } 1006 } 1007 else 1008 { 1009 // The type is not in a namespace/class scope, just search for it by basename 1010 if (type_class != eTypeClassAny) 1011 { 1012 // The "type_name_cstr" will have been modified if we have a valid type class 1013 // prefix (like "struct", "class", "union", "typedef" etc). 1014 FindTypes_Impl(sc, ConstString(type_name_cstr), NULL, append, max_matches, typesmap); 1015 typesmap.RemoveMismatchedTypes (type_class); 1016 num_matches = typesmap.GetSize(); 1017 } 1018 else 1019 { 1020 num_matches = FindTypes_Impl(sc, name, NULL, append, max_matches, typesmap); 1021 } 1022 } 1023 if (num_matches > 0) 1024 sc.SortTypeList(typesmap, types); 1025 return num_matches; 1026 } 1027 1028 SymbolVendor* 1029 Module::GetSymbolVendor (bool can_create, lldb_private::Stream *feedback_strm) 1030 { 1031 if (m_did_load_symbol_vendor.load() == false) 1032 { 1033 Mutex::Locker locker (m_mutex); 1034 if (m_did_load_symbol_vendor.load() == false && can_create) 1035 { 1036 ObjectFile *obj_file = GetObjectFile (); 1037 if (obj_file != NULL) 1038 { 1039 Timer scoped_timer(__PRETTY_FUNCTION__, __PRETTY_FUNCTION__); 1040 m_symfile_ap.reset(SymbolVendor::FindPlugin(shared_from_this(), feedback_strm)); 1041 m_did_load_symbol_vendor = true; 1042 } 1043 } 1044 } 1045 return m_symfile_ap.get(); 1046 } 1047 1048 void 1049 Module::SetFileSpecAndObjectName (const FileSpec &file, const ConstString &object_name) 1050 { 1051 // Container objects whose paths do not specify a file directly can call 1052 // this function to correct the file and object names. 1053 m_file = file; 1054 m_mod_time = file.GetModificationTime(); 1055 m_object_name = object_name; 1056 } 1057 1058 const ArchSpec& 1059 Module::GetArchitecture () const 1060 { 1061 return m_arch; 1062 } 1063 1064 std::string 1065 Module::GetSpecificationDescription () const 1066 { 1067 std::string spec(GetFileSpec().GetPath()); 1068 if (m_object_name) 1069 { 1070 spec += '('; 1071 spec += m_object_name.GetCString(); 1072 spec += ')'; 1073 } 1074 return spec; 1075 } 1076 1077 void 1078 Module::GetDescription (Stream *s, lldb::DescriptionLevel level) 1079 { 1080 Mutex::Locker locker (m_mutex); 1081 1082 if (level >= eDescriptionLevelFull) 1083 { 1084 if (m_arch.IsValid()) 1085 s->Printf("(%s) ", m_arch.GetArchitectureName()); 1086 } 1087 1088 if (level == eDescriptionLevelBrief) 1089 { 1090 const char *filename = m_file.GetFilename().GetCString(); 1091 if (filename) 1092 s->PutCString (filename); 1093 } 1094 else 1095 { 1096 char path[PATH_MAX]; 1097 if (m_file.GetPath(path, sizeof(path))) 1098 s->PutCString(path); 1099 } 1100 1101 const char *object_name = m_object_name.GetCString(); 1102 if (object_name) 1103 s->Printf("(%s)", object_name); 1104 } 1105 1106 void 1107 Module::ReportError (const char *format, ...) 1108 { 1109 if (format && format[0]) 1110 { 1111 StreamString strm; 1112 strm.PutCString("error: "); 1113 GetDescription(&strm, lldb::eDescriptionLevelBrief); 1114 strm.PutChar (' '); 1115 va_list args; 1116 va_start (args, format); 1117 strm.PrintfVarArg(format, args); 1118 va_end (args); 1119 1120 const int format_len = strlen(format); 1121 if (format_len > 0) 1122 { 1123 const char last_char = format[format_len-1]; 1124 if (last_char != '\n' || last_char != '\r') 1125 strm.EOL(); 1126 } 1127 Host::SystemLog (Host::eSystemLogError, "%s", strm.GetString().c_str()); 1128 1129 } 1130 } 1131 1132 bool 1133 Module::FileHasChanged () const 1134 { 1135 if (m_file_has_changed == false) 1136 m_file_has_changed = (m_file.GetModificationTime() != m_mod_time); 1137 return m_file_has_changed; 1138 } 1139 1140 void 1141 Module::ReportErrorIfModifyDetected (const char *format, ...) 1142 { 1143 if (m_first_file_changed_log == false) 1144 { 1145 if (FileHasChanged ()) 1146 { 1147 m_first_file_changed_log = true; 1148 if (format) 1149 { 1150 StreamString strm; 1151 strm.PutCString("error: the object file "); 1152 GetDescription(&strm, lldb::eDescriptionLevelFull); 1153 strm.PutCString (" has been modified\n"); 1154 1155 va_list args; 1156 va_start (args, format); 1157 strm.PrintfVarArg(format, args); 1158 va_end (args); 1159 1160 const int format_len = strlen(format); 1161 if (format_len > 0) 1162 { 1163 const char last_char = format[format_len-1]; 1164 if (last_char != '\n' || last_char != '\r') 1165 strm.EOL(); 1166 } 1167 strm.PutCString("The debug session should be aborted as the original debug information has been overwritten.\n"); 1168 Host::SystemLog (Host::eSystemLogError, "%s", strm.GetString().c_str()); 1169 } 1170 } 1171 } 1172 } 1173 1174 void 1175 Module::ReportWarning (const char *format, ...) 1176 { 1177 if (format && format[0]) 1178 { 1179 StreamString strm; 1180 strm.PutCString("warning: "); 1181 GetDescription(&strm, lldb::eDescriptionLevelFull); 1182 strm.PutChar (' '); 1183 1184 va_list args; 1185 va_start (args, format); 1186 strm.PrintfVarArg(format, args); 1187 va_end (args); 1188 1189 const int format_len = strlen(format); 1190 if (format_len > 0) 1191 { 1192 const char last_char = format[format_len-1]; 1193 if (last_char != '\n' || last_char != '\r') 1194 strm.EOL(); 1195 } 1196 Host::SystemLog (Host::eSystemLogWarning, "%s", strm.GetString().c_str()); 1197 } 1198 } 1199 1200 void 1201 Module::LogMessage (Log *log, const char *format, ...) 1202 { 1203 if (log) 1204 { 1205 StreamString log_message; 1206 GetDescription(&log_message, lldb::eDescriptionLevelFull); 1207 log_message.PutCString (": "); 1208 va_list args; 1209 va_start (args, format); 1210 log_message.PrintfVarArg (format, args); 1211 va_end (args); 1212 log->PutCString(log_message.GetString().c_str()); 1213 } 1214 } 1215 1216 void 1217 Module::LogMessageVerboseBacktrace (Log *log, const char *format, ...) 1218 { 1219 if (log) 1220 { 1221 StreamString log_message; 1222 GetDescription(&log_message, lldb::eDescriptionLevelFull); 1223 log_message.PutCString (": "); 1224 va_list args; 1225 va_start (args, format); 1226 log_message.PrintfVarArg (format, args); 1227 va_end (args); 1228 if (log->GetVerbose()) 1229 { 1230 std::string back_trace; 1231 llvm::raw_string_ostream stream(back_trace); 1232 llvm::sys::PrintStackTrace(stream); 1233 log_message.PutCString(back_trace.c_str()); 1234 } 1235 log->PutCString(log_message.GetString().c_str()); 1236 } 1237 } 1238 1239 void 1240 Module::Dump(Stream *s) 1241 { 1242 Mutex::Locker locker (m_mutex); 1243 //s->Printf("%.*p: ", (int)sizeof(void*) * 2, this); 1244 s->Indent(); 1245 s->Printf("Module %s%s%s%s\n", 1246 m_file.GetPath().c_str(), 1247 m_object_name ? "(" : "", 1248 m_object_name ? m_object_name.GetCString() : "", 1249 m_object_name ? ")" : ""); 1250 1251 s->IndentMore(); 1252 1253 ObjectFile *objfile = GetObjectFile (); 1254 if (objfile) 1255 objfile->Dump(s); 1256 1257 SymbolVendor *symbols = GetSymbolVendor (); 1258 if (symbols) 1259 symbols->Dump(s); 1260 1261 s->IndentLess(); 1262 } 1263 1264 1265 TypeList* 1266 Module::GetTypeList () 1267 { 1268 SymbolVendor *symbols = GetSymbolVendor (); 1269 if (symbols) 1270 return &symbols->GetTypeList(); 1271 return NULL; 1272 } 1273 1274 const ConstString & 1275 Module::GetObjectName() const 1276 { 1277 return m_object_name; 1278 } 1279 1280 ObjectFile * 1281 Module::GetObjectFile() 1282 { 1283 if (m_did_load_objfile.load() == false) 1284 { 1285 Mutex::Locker locker (m_mutex); 1286 if (m_did_load_objfile.load() == false) 1287 { 1288 Timer scoped_timer(__PRETTY_FUNCTION__, 1289 "Module::GetObjectFile () module = %s", GetFileSpec().GetFilename().AsCString("")); 1290 DataBufferSP data_sp; 1291 lldb::offset_t data_offset = 0; 1292 const lldb::offset_t file_size = m_file.GetByteSize(); 1293 if (file_size > m_object_offset) 1294 { 1295 m_did_load_objfile = true; 1296 m_objfile_sp = ObjectFile::FindPlugin (shared_from_this(), 1297 &m_file, 1298 m_object_offset, 1299 file_size - m_object_offset, 1300 data_sp, 1301 data_offset); 1302 if (m_objfile_sp) 1303 { 1304 // Once we get the object file, update our module with the object file's 1305 // architecture since it might differ in vendor/os if some parts were 1306 // unknown. But since the matching arch might already be more specific 1307 // than the generic COFF architecture, only merge in those values that 1308 // overwrite unspecified unknown values. 1309 ArchSpec new_arch; 1310 m_objfile_sp->GetArchitecture(new_arch); 1311 m_arch.MergeFrom(new_arch); 1312 } 1313 else 1314 { 1315 ReportError ("failed to load objfile for %s", GetFileSpec().GetPath().c_str()); 1316 } 1317 } 1318 } 1319 } 1320 return m_objfile_sp.get(); 1321 } 1322 1323 SectionList * 1324 Module::GetSectionList() 1325 { 1326 // Populate m_unified_sections_ap with sections from objfile. 1327 if (m_sections_ap.get() == NULL) 1328 { 1329 ObjectFile *obj_file = GetObjectFile(); 1330 if (obj_file) 1331 obj_file->CreateSections(*GetUnifiedSectionList()); 1332 } 1333 return m_sections_ap.get(); 1334 } 1335 1336 void 1337 Module::SectionFileAddressesChanged () 1338 { 1339 ObjectFile *obj_file = GetObjectFile (); 1340 if (obj_file) 1341 obj_file->SectionFileAddressesChanged (); 1342 SymbolVendor* sym_vendor = GetSymbolVendor(); 1343 if (sym_vendor) 1344 sym_vendor->SectionFileAddressesChanged (); 1345 } 1346 1347 SectionList * 1348 Module::GetUnifiedSectionList() 1349 { 1350 // Populate m_unified_sections_ap with sections from objfile. 1351 if (m_sections_ap.get() == NULL) 1352 m_sections_ap.reset(new SectionList()); 1353 return m_sections_ap.get(); 1354 } 1355 1356 const Symbol * 1357 Module::FindFirstSymbolWithNameAndType (const ConstString &name, SymbolType symbol_type) 1358 { 1359 Timer scoped_timer(__PRETTY_FUNCTION__, 1360 "Module::FindFirstSymbolWithNameAndType (name = %s, type = %i)", 1361 name.AsCString(), 1362 symbol_type); 1363 SymbolVendor* sym_vendor = GetSymbolVendor(); 1364 if (sym_vendor) 1365 { 1366 Symtab *symtab = sym_vendor->GetSymtab(); 1367 if (symtab) 1368 return symtab->FindFirstSymbolWithNameAndType (name, symbol_type, Symtab::eDebugAny, Symtab::eVisibilityAny); 1369 } 1370 return NULL; 1371 } 1372 void 1373 Module::SymbolIndicesToSymbolContextList (Symtab *symtab, std::vector<uint32_t> &symbol_indexes, SymbolContextList &sc_list) 1374 { 1375 // No need to protect this call using m_mutex all other method calls are 1376 // already thread safe. 1377 1378 size_t num_indices = symbol_indexes.size(); 1379 if (num_indices > 0) 1380 { 1381 SymbolContext sc; 1382 CalculateSymbolContext (&sc); 1383 for (size_t i = 0; i < num_indices; i++) 1384 { 1385 sc.symbol = symtab->SymbolAtIndex (symbol_indexes[i]); 1386 if (sc.symbol) 1387 sc_list.Append (sc); 1388 } 1389 } 1390 } 1391 1392 size_t 1393 Module::FindFunctionSymbols (const ConstString &name, 1394 uint32_t name_type_mask, 1395 SymbolContextList& sc_list) 1396 { 1397 Timer scoped_timer(__PRETTY_FUNCTION__, 1398 "Module::FindSymbolsFunctions (name = %s, mask = 0x%8.8x)", 1399 name.AsCString(), 1400 name_type_mask); 1401 SymbolVendor* sym_vendor = GetSymbolVendor(); 1402 if (sym_vendor) 1403 { 1404 Symtab *symtab = sym_vendor->GetSymtab(); 1405 if (symtab) 1406 return symtab->FindFunctionSymbols (name, name_type_mask, sc_list); 1407 } 1408 return 0; 1409 } 1410 1411 size_t 1412 Module::FindSymbolsWithNameAndType (const ConstString &name, SymbolType symbol_type, SymbolContextList &sc_list) 1413 { 1414 // No need to protect this call using m_mutex all other method calls are 1415 // already thread safe. 1416 1417 1418 Timer scoped_timer(__PRETTY_FUNCTION__, 1419 "Module::FindSymbolsWithNameAndType (name = %s, type = %i)", 1420 name.AsCString(), 1421 symbol_type); 1422 const size_t initial_size = sc_list.GetSize(); 1423 SymbolVendor* sym_vendor = GetSymbolVendor(); 1424 if (sym_vendor) 1425 { 1426 Symtab *symtab = sym_vendor->GetSymtab(); 1427 if (symtab) 1428 { 1429 std::vector<uint32_t> symbol_indexes; 1430 symtab->FindAllSymbolsWithNameAndType (name, symbol_type, symbol_indexes); 1431 SymbolIndicesToSymbolContextList (symtab, symbol_indexes, sc_list); 1432 } 1433 } 1434 return sc_list.GetSize() - initial_size; 1435 } 1436 1437 size_t 1438 Module::FindSymbolsMatchingRegExAndType (const RegularExpression ®ex, SymbolType symbol_type, SymbolContextList &sc_list) 1439 { 1440 // No need to protect this call using m_mutex all other method calls are 1441 // already thread safe. 1442 1443 Timer scoped_timer(__PRETTY_FUNCTION__, 1444 "Module::FindSymbolsMatchingRegExAndType (regex = %s, type = %i)", 1445 regex.GetText(), 1446 symbol_type); 1447 const size_t initial_size = sc_list.GetSize(); 1448 SymbolVendor* sym_vendor = GetSymbolVendor(); 1449 if (sym_vendor) 1450 { 1451 Symtab *symtab = sym_vendor->GetSymtab(); 1452 if (symtab) 1453 { 1454 std::vector<uint32_t> symbol_indexes; 1455 symtab->FindAllSymbolsMatchingRexExAndType (regex, symbol_type, Symtab::eDebugAny, Symtab::eVisibilityAny, symbol_indexes); 1456 SymbolIndicesToSymbolContextList (symtab, symbol_indexes, sc_list); 1457 } 1458 } 1459 return sc_list.GetSize() - initial_size; 1460 } 1461 1462 void 1463 Module::SetSymbolFileFileSpec (const FileSpec &file) 1464 { 1465 if (!file.Exists()) 1466 return; 1467 if (m_symfile_ap) 1468 { 1469 // Remove any sections in the unified section list that come from the current symbol vendor. 1470 SectionList *section_list = GetSectionList(); 1471 SymbolFile *symbol_file = m_symfile_ap->GetSymbolFile(); 1472 if (section_list && symbol_file) 1473 { 1474 ObjectFile *obj_file = symbol_file->GetObjectFile(); 1475 // Make sure we have an object file and that the symbol vendor's objfile isn't 1476 // the same as the module's objfile before we remove any sections for it... 1477 if (obj_file) 1478 { 1479 // Check to make sure we aren't trying to specify the file we already have 1480 if (obj_file->GetFileSpec() == file) 1481 { 1482 // We are being told to add the exact same file that we already have 1483 // we don't have to do anything. 1484 return; 1485 } 1486 1487 // Cleare the current symtab as we are going to replace it with a new one 1488 obj_file->ClearSymtab(); 1489 1490 // The symbol file might be a directory bundle ("/tmp/a.out.dSYM") instead 1491 // of a full path to the symbol file within the bundle 1492 // ("/tmp/a.out.dSYM/Contents/Resources/DWARF/a.out"). So we need to check this 1493 1494 if (file.IsDirectory()) 1495 { 1496 std::string new_path(file.GetPath()); 1497 std::string old_path(obj_file->GetFileSpec().GetPath()); 1498 if (old_path.find(new_path) == 0) 1499 { 1500 // We specified the same bundle as the symbol file that we already have 1501 return; 1502 } 1503 } 1504 1505 if (obj_file != m_objfile_sp.get()) 1506 { 1507 size_t num_sections = section_list->GetNumSections (0); 1508 for (size_t idx = num_sections; idx > 0; --idx) 1509 { 1510 lldb::SectionSP section_sp (section_list->GetSectionAtIndex (idx - 1)); 1511 if (section_sp->GetObjectFile() == obj_file) 1512 { 1513 section_list->DeleteSection (idx - 1); 1514 } 1515 } 1516 } 1517 } 1518 } 1519 // Keep all old symbol files around in case there are any lingering type references in 1520 // any SBValue objects that might have been handed out. 1521 m_old_symfiles.push_back(std::move(m_symfile_ap)); 1522 } 1523 m_symfile_spec = file; 1524 m_symfile_ap.reset(); 1525 m_did_load_symbol_vendor = false; 1526 } 1527 1528 bool 1529 Module::IsExecutable () 1530 { 1531 if (GetObjectFile() == NULL) 1532 return false; 1533 else 1534 return GetObjectFile()->IsExecutable(); 1535 } 1536 1537 bool 1538 Module::IsLoadedInTarget (Target *target) 1539 { 1540 ObjectFile *obj_file = GetObjectFile(); 1541 if (obj_file) 1542 { 1543 SectionList *sections = GetSectionList(); 1544 if (sections != NULL) 1545 { 1546 size_t num_sections = sections->GetSize(); 1547 for (size_t sect_idx = 0; sect_idx < num_sections; sect_idx++) 1548 { 1549 SectionSP section_sp = sections->GetSectionAtIndex(sect_idx); 1550 if (section_sp->GetLoadBaseAddress(target) != LLDB_INVALID_ADDRESS) 1551 { 1552 return true; 1553 } 1554 } 1555 } 1556 } 1557 return false; 1558 } 1559 1560 bool 1561 Module::LoadScriptingResourceInTarget (Target *target, Error& error, Stream* feedback_stream) 1562 { 1563 if (!target) 1564 { 1565 error.SetErrorString("invalid destination Target"); 1566 return false; 1567 } 1568 1569 LoadScriptFromSymFile should_load = target->TargetProperties::GetLoadScriptFromSymbolFile(); 1570 1571 if (should_load == eLoadScriptFromSymFileFalse) 1572 return false; 1573 1574 Debugger &debugger = target->GetDebugger(); 1575 const ScriptLanguage script_language = debugger.GetScriptLanguage(); 1576 if (script_language != eScriptLanguageNone) 1577 { 1578 1579 PlatformSP platform_sp(target->GetPlatform()); 1580 1581 if (!platform_sp) 1582 { 1583 error.SetErrorString("invalid Platform"); 1584 return false; 1585 } 1586 1587 FileSpecList file_specs = platform_sp->LocateExecutableScriptingResources (target, 1588 *this, 1589 feedback_stream); 1590 1591 1592 const uint32_t num_specs = file_specs.GetSize(); 1593 if (num_specs) 1594 { 1595 ScriptInterpreter *script_interpreter = debugger.GetCommandInterpreter().GetScriptInterpreter(); 1596 if (script_interpreter) 1597 { 1598 for (uint32_t i=0; i<num_specs; ++i) 1599 { 1600 FileSpec scripting_fspec (file_specs.GetFileSpecAtIndex(i)); 1601 if (scripting_fspec && scripting_fspec.Exists()) 1602 { 1603 if (should_load == eLoadScriptFromSymFileWarn) 1604 { 1605 if (feedback_stream) 1606 feedback_stream->Printf("warning: '%s' contains a debug script. To run this script in " 1607 "this debug session:\n\n command script import \"%s\"\n\n" 1608 "To run all discovered debug scripts in this session:\n\n" 1609 " settings set target.load-script-from-symbol-file true\n", 1610 GetFileSpec().GetFileNameStrippingExtension().GetCString(), 1611 scripting_fspec.GetPath().c_str()); 1612 return false; 1613 } 1614 StreamString scripting_stream; 1615 scripting_fspec.Dump(&scripting_stream); 1616 const bool can_reload = true; 1617 const bool init_lldb_globals = false; 1618 bool did_load = script_interpreter->LoadScriptingModule(scripting_stream.GetData(), 1619 can_reload, 1620 init_lldb_globals, 1621 error); 1622 if (!did_load) 1623 return false; 1624 } 1625 } 1626 } 1627 else 1628 { 1629 error.SetErrorString("invalid ScriptInterpreter"); 1630 return false; 1631 } 1632 } 1633 } 1634 return true; 1635 } 1636 1637 bool 1638 Module::SetArchitecture (const ArchSpec &new_arch) 1639 { 1640 if (!m_arch.IsValid()) 1641 { 1642 m_arch = new_arch; 1643 return true; 1644 } 1645 return m_arch.IsCompatibleMatch(new_arch); 1646 } 1647 1648 bool 1649 Module::SetLoadAddress (Target &target, lldb::addr_t value, bool value_is_offset, bool &changed) 1650 { 1651 ObjectFile *object_file = GetObjectFile(); 1652 if (object_file) 1653 { 1654 changed = object_file->SetLoadAddress(target, value, value_is_offset); 1655 return true; 1656 } 1657 else 1658 { 1659 changed = false; 1660 } 1661 return false; 1662 } 1663 1664 1665 bool 1666 Module::MatchesModuleSpec (const ModuleSpec &module_ref) 1667 { 1668 const UUID &uuid = module_ref.GetUUID(); 1669 1670 if (uuid.IsValid()) 1671 { 1672 // If the UUID matches, then nothing more needs to match... 1673 if (uuid == GetUUID()) 1674 return true; 1675 else 1676 return false; 1677 } 1678 1679 const FileSpec &file_spec = module_ref.GetFileSpec(); 1680 if (file_spec) 1681 { 1682 if (!FileSpec::Equal (file_spec, m_file, (bool)file_spec.GetDirectory()) && 1683 !FileSpec::Equal (file_spec, m_platform_file, (bool)file_spec.GetDirectory())) 1684 return false; 1685 } 1686 1687 const FileSpec &platform_file_spec = module_ref.GetPlatformFileSpec(); 1688 if (platform_file_spec) 1689 { 1690 if (!FileSpec::Equal (platform_file_spec, GetPlatformFileSpec (), (bool)platform_file_spec.GetDirectory())) 1691 return false; 1692 } 1693 1694 const ArchSpec &arch = module_ref.GetArchitecture(); 1695 if (arch.IsValid()) 1696 { 1697 if (!m_arch.IsCompatibleMatch(arch)) 1698 return false; 1699 } 1700 1701 const ConstString &object_name = module_ref.GetObjectName(); 1702 if (object_name) 1703 { 1704 if (object_name != GetObjectName()) 1705 return false; 1706 } 1707 return true; 1708 } 1709 1710 bool 1711 Module::FindSourceFile (const FileSpec &orig_spec, FileSpec &new_spec) const 1712 { 1713 Mutex::Locker locker (m_mutex); 1714 return m_source_mappings.FindFile (orig_spec, new_spec); 1715 } 1716 1717 bool 1718 Module::RemapSourceFile (const char *path, std::string &new_path) const 1719 { 1720 Mutex::Locker locker (m_mutex); 1721 return m_source_mappings.RemapPath(path, new_path); 1722 } 1723 1724 uint32_t 1725 Module::GetVersion (uint32_t *versions, uint32_t num_versions) 1726 { 1727 ObjectFile *obj_file = GetObjectFile(); 1728 if (obj_file) 1729 return obj_file->GetVersion (versions, num_versions); 1730 1731 if (versions && num_versions) 1732 { 1733 for (uint32_t i=0; i<num_versions; ++i) 1734 versions[i] = LLDB_INVALID_MODULE_VERSION; 1735 } 1736 return 0; 1737 } 1738 1739 void 1740 Module::PrepareForFunctionNameLookup (const ConstString &name, 1741 uint32_t name_type_mask, 1742 LanguageType language, 1743 ConstString &lookup_name, 1744 uint32_t &lookup_name_type_mask, 1745 bool &match_name_after_lookup) 1746 { 1747 const char *name_cstr = name.GetCString(); 1748 lookup_name_type_mask = eFunctionNameTypeNone; 1749 match_name_after_lookup = false; 1750 1751 llvm::StringRef basename; 1752 llvm::StringRef context; 1753 1754 if (name_type_mask & eFunctionNameTypeAuto) 1755 { 1756 if (CPlusPlusLanguage::IsCPPMangledName (name_cstr)) 1757 lookup_name_type_mask = eFunctionNameTypeFull; 1758 else if ((language == eLanguageTypeUnknown || 1759 Language::LanguageIsObjC(language)) && 1760 ObjCLanguage::IsPossibleObjCMethodName (name_cstr)) 1761 lookup_name_type_mask = eFunctionNameTypeFull; 1762 else if (Language::LanguageIsC(language)) 1763 { 1764 lookup_name_type_mask = eFunctionNameTypeFull; 1765 } 1766 else 1767 { 1768 if ((language == eLanguageTypeUnknown || 1769 Language::LanguageIsObjC(language)) && 1770 ObjCLanguage::IsPossibleObjCSelector(name_cstr)) 1771 lookup_name_type_mask |= eFunctionNameTypeSelector; 1772 1773 CPlusPlusLanguage::MethodName cpp_method (name); 1774 basename = cpp_method.GetBasename(); 1775 if (basename.empty()) 1776 { 1777 if (CPlusPlusLanguage::ExtractContextAndIdentifier (name_cstr, context, basename)) 1778 lookup_name_type_mask |= (eFunctionNameTypeMethod | eFunctionNameTypeBase); 1779 else 1780 lookup_name_type_mask |= eFunctionNameTypeFull; 1781 } 1782 else 1783 { 1784 lookup_name_type_mask |= (eFunctionNameTypeMethod | eFunctionNameTypeBase); 1785 } 1786 } 1787 } 1788 else 1789 { 1790 lookup_name_type_mask = name_type_mask; 1791 if (lookup_name_type_mask & eFunctionNameTypeMethod || name_type_mask & eFunctionNameTypeBase) 1792 { 1793 // If they've asked for a CPP method or function name and it can't be that, we don't 1794 // even need to search for CPP methods or names. 1795 CPlusPlusLanguage::MethodName cpp_method (name); 1796 if (cpp_method.IsValid()) 1797 { 1798 basename = cpp_method.GetBasename(); 1799 1800 if (!cpp_method.GetQualifiers().empty()) 1801 { 1802 // There is a "const" or other qualifier following the end of the function parens, 1803 // this can't be a eFunctionNameTypeBase 1804 lookup_name_type_mask &= ~(eFunctionNameTypeBase); 1805 if (lookup_name_type_mask == eFunctionNameTypeNone) 1806 return; 1807 } 1808 } 1809 else 1810 { 1811 // If the CPP method parser didn't manage to chop this up, try to fill in the base name if we can. 1812 // If a::b::c is passed in, we need to just look up "c", and then we'll filter the result later. 1813 CPlusPlusLanguage::ExtractContextAndIdentifier (name_cstr, context, basename); 1814 } 1815 } 1816 1817 if (lookup_name_type_mask & eFunctionNameTypeSelector) 1818 { 1819 if (!ObjCLanguage::IsPossibleObjCSelector(name_cstr)) 1820 { 1821 lookup_name_type_mask &= ~(eFunctionNameTypeSelector); 1822 if (lookup_name_type_mask == eFunctionNameTypeNone) 1823 return; 1824 } 1825 } 1826 } 1827 1828 if (!basename.empty()) 1829 { 1830 // The name supplied was a partial C++ path like "a::count". In this case we want to do a 1831 // lookup on the basename "count" and then make sure any matching results contain "a::count" 1832 // so that it would match "b::a::count" and "a::count". This is why we set "match_name_after_lookup" 1833 // to true 1834 lookup_name.SetString(basename); 1835 match_name_after_lookup = true; 1836 } 1837 else 1838 { 1839 // The name is already correct, just use the exact name as supplied, and we won't need 1840 // to check if any matches contain "name" 1841 lookup_name = name; 1842 match_name_after_lookup = false; 1843 } 1844 } 1845 1846 ModuleSP 1847 Module::CreateJITModule (const lldb::ObjectFileJITDelegateSP &delegate_sp) 1848 { 1849 if (delegate_sp) 1850 { 1851 // Must create a module and place it into a shared pointer before 1852 // we can create an object file since it has a std::weak_ptr back 1853 // to the module, so we need to control the creation carefully in 1854 // this static function 1855 ModuleSP module_sp(new Module()); 1856 module_sp->m_objfile_sp.reset (new ObjectFileJIT (module_sp, delegate_sp)); 1857 if (module_sp->m_objfile_sp) 1858 { 1859 // Once we get the object file, update our module with the object file's 1860 // architecture since it might differ in vendor/os if some parts were 1861 // unknown. 1862 module_sp->m_objfile_sp->GetArchitecture (module_sp->m_arch); 1863 } 1864 return module_sp; 1865 } 1866 return ModuleSP(); 1867 } 1868 1869 bool 1870 Module::GetIsDynamicLinkEditor() 1871 { 1872 ObjectFile * obj_file = GetObjectFile (); 1873 1874 if (obj_file) 1875 return obj_file->GetIsDynamicLinkEditor(); 1876 1877 return false; 1878 } 1879