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/RegularExpression.h" 19 #include "lldb/Core/Section.h" 20 #include "lldb/Core/StreamString.h" 21 #include "lldb/Core/Timer.h" 22 #include "lldb/Host/Host.h" 23 #include "lldb/Host/Symbols.h" 24 #include "lldb/Interpreter/CommandInterpreter.h" 25 #include "lldb/Interpreter/ScriptInterpreter.h" 26 #include "lldb/Symbol/ClangASTContext.h" 27 #include "lldb/Symbol/CompileUnit.h" 28 #include "lldb/Symbol/ObjectFile.h" 29 #include "lldb/Symbol/SymbolContext.h" 30 #include "lldb/Symbol/SymbolVendor.h" 31 #include "lldb/Target/CPPLanguageRuntime.h" 32 #include "lldb/Target/ObjCLanguageRuntime.h" 33 #include "lldb/Target/Process.h" 34 #include "lldb/Target/SectionLoadList.h" 35 #include "lldb/Target/Target.h" 36 #include "lldb/Symbol/SymbolFile.h" 37 38 #include "Plugins/ObjectFile/JIT/ObjectFileJIT.h" 39 40 #include "llvm/Support/raw_os_ostream.h" 41 #include "llvm/Support/Signals.h" 42 43 using namespace lldb; 44 using namespace lldb_private; 45 46 // Shared pointers to modules track module lifetimes in 47 // targets and in the global module, but this collection 48 // will track all module objects that are still alive 49 typedef std::vector<Module *> ModuleCollection; 50 51 static ModuleCollection & 52 GetModuleCollection() 53 { 54 // This module collection needs to live past any module, so we could either make it a 55 // shared pointer in each module or just leak is. Since it is only an empty vector by 56 // the time all the modules have gone away, we just leak it for now. If we decide this 57 // is a big problem we can introduce a Finalize method that will tear everything down in 58 // a predictable order. 59 60 static ModuleCollection *g_module_collection = NULL; 61 if (g_module_collection == NULL) 62 g_module_collection = new ModuleCollection(); 63 64 return *g_module_collection; 65 } 66 67 Mutex * 68 Module::GetAllocationModuleCollectionMutex() 69 { 70 // NOTE: The mutex below must be leaked since the global module list in 71 // the ModuleList class will get torn at some point, and we can't know 72 // if it will tear itself down before the "g_module_collection_mutex" below 73 // will. So we leak a Mutex object below to safeguard against that 74 75 static Mutex *g_module_collection_mutex = NULL; 76 if (g_module_collection_mutex == NULL) 77 g_module_collection_mutex = new Mutex (Mutex::eMutexTypeRecursive); // NOTE: known leak 78 return g_module_collection_mutex; 79 } 80 81 size_t 82 Module::GetNumberAllocatedModules () 83 { 84 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 85 return GetModuleCollection().size(); 86 } 87 88 Module * 89 Module::GetAllocatedModuleAtIndex (size_t idx) 90 { 91 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 92 ModuleCollection &modules = GetModuleCollection(); 93 if (idx < modules.size()) 94 return modules[idx]; 95 return NULL; 96 } 97 #if 0 98 99 // These functions help us to determine if modules are still loaded, yet don't require that 100 // you have a command interpreter and can easily be called from an external debugger. 101 namespace lldb { 102 103 void 104 ClearModuleInfo (void) 105 { 106 const bool mandatory = true; 107 ModuleList::RemoveOrphanSharedModules(mandatory); 108 } 109 110 void 111 DumpModuleInfo (void) 112 { 113 Mutex::Locker locker (Module::GetAllocationModuleCollectionMutex()); 114 ModuleCollection &modules = GetModuleCollection(); 115 const size_t count = modules.size(); 116 printf ("%s: %" PRIu64 " modules:\n", __PRETTY_FUNCTION__, (uint64_t)count); 117 for (size_t i=0; i<count; ++i) 118 { 119 120 StreamString strm; 121 Module *module = modules[i]; 122 const bool in_shared_module_list = ModuleList::ModuleIsInCache (module); 123 module->GetDescription(&strm, eDescriptionLevelFull); 124 printf ("%p: shared = %i, ref_count = %3u, module = %s\n", 125 module, 126 in_shared_module_list, 127 (uint32_t)module->use_count(), 128 strm.GetString().c_str()); 129 } 130 } 131 } 132 133 #endif 134 135 Module::Module (const ModuleSpec &module_spec) : 136 m_mutex (Mutex::eMutexTypeRecursive), 137 m_mod_time (), 138 m_arch (), 139 m_uuid (), 140 m_file (), 141 m_platform_file(), 142 m_remote_install_file(), 143 m_symfile_spec (), 144 m_object_name (), 145 m_object_offset (), 146 m_object_mod_time (), 147 m_objfile_sp (), 148 m_symfile_ap (), 149 m_ast (new ClangASTContext), 150 m_source_mappings (), 151 m_sections_ap(), 152 m_did_load_objfile (false), 153 m_did_load_symbol_vendor (false), 154 m_did_parse_uuid (false), 155 m_did_init_ast (false), 156 m_file_has_changed (false), 157 m_first_file_changed_log (false) 158 { 159 // Scope for locker below... 160 { 161 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 162 GetModuleCollection().push_back(this); 163 } 164 165 Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_OBJECT|LIBLLDB_LOG_MODULES)); 166 if (log) 167 log->Printf ("%p Module::Module((%s) '%s%s%s%s')", 168 static_cast<void*>(this), 169 module_spec.GetArchitecture().GetArchitectureName(), 170 module_spec.GetFileSpec().GetPath().c_str(), 171 module_spec.GetObjectName().IsEmpty() ? "" : "(", 172 module_spec.GetObjectName().IsEmpty() ? "" : module_spec.GetObjectName().AsCString(""), 173 module_spec.GetObjectName().IsEmpty() ? "" : ")"); 174 175 // First extract all module specifications from the file using the local 176 // file path. If there are no specifications, then don't fill anything in 177 ModuleSpecList modules_specs; 178 if (ObjectFile::GetModuleSpecifications(module_spec.GetFileSpec(), 0, 0, modules_specs) == 0) 179 return; 180 181 // Now make sure that one of the module specifications matches what we just 182 // extract. We might have a module specification that specifies a file "/usr/lib/dyld" 183 // with UUID XXX, but we might have a local version of "/usr/lib/dyld" that has 184 // UUID YYY and we don't want those to match. If they don't match, just don't 185 // fill any ivars in so we don't accidentally grab the wrong file later since 186 // they don't match... 187 ModuleSpec matching_module_spec; 188 if (modules_specs.FindMatchingModuleSpec(module_spec, matching_module_spec) == 0) 189 return; 190 191 if (module_spec.GetFileSpec()) 192 m_mod_time = module_spec.GetFileSpec().GetModificationTime(); 193 else if (matching_module_spec.GetFileSpec()) 194 m_mod_time = matching_module_spec.GetFileSpec().GetModificationTime(); 195 196 // Copy the architecture from the actual spec if we got one back, else use the one that was specified 197 if (matching_module_spec.GetArchitecture().IsValid()) 198 m_arch = matching_module_spec.GetArchitecture(); 199 else if (module_spec.GetArchitecture().IsValid()) 200 m_arch = module_spec.GetArchitecture(); 201 202 // Copy the file spec over and use the specified one (if there was one) so we 203 // don't use a path that might have gotten resolved a path in 'matching_module_spec' 204 if (module_spec.GetFileSpec()) 205 m_file = module_spec.GetFileSpec(); 206 else if (matching_module_spec.GetFileSpec()) 207 m_file = matching_module_spec.GetFileSpec(); 208 209 // Copy the platform file spec over 210 if (module_spec.GetPlatformFileSpec()) 211 m_platform_file = module_spec.GetPlatformFileSpec(); 212 else if (matching_module_spec.GetPlatformFileSpec()) 213 m_platform_file = matching_module_spec.GetPlatformFileSpec(); 214 215 // Copy the symbol file spec over 216 if (module_spec.GetSymbolFileSpec()) 217 m_symfile_spec = module_spec.GetSymbolFileSpec(); 218 else if (matching_module_spec.GetSymbolFileSpec()) 219 m_symfile_spec = matching_module_spec.GetSymbolFileSpec(); 220 221 // Copy the object name over 222 if (matching_module_spec.GetObjectName()) 223 m_object_name = matching_module_spec.GetObjectName(); 224 else 225 m_object_name = module_spec.GetObjectName(); 226 227 // Always trust the object offset (file offset) and object modification 228 // time (for mod time in a BSD static archive) of from the matching 229 // module specification 230 m_object_offset = matching_module_spec.GetObjectOffset(); 231 m_object_mod_time = matching_module_spec.GetObjectModificationTime(); 232 233 } 234 235 Module::Module(const FileSpec& file_spec, 236 const ArchSpec& arch, 237 const ConstString *object_name, 238 lldb::offset_t object_offset, 239 const TimeValue *object_mod_time_ptr) : 240 m_mutex (Mutex::eMutexTypeRecursive), 241 m_mod_time (file_spec.GetModificationTime()), 242 m_arch (arch), 243 m_uuid (), 244 m_file (file_spec), 245 m_platform_file(), 246 m_remote_install_file (), 247 m_symfile_spec (), 248 m_object_name (), 249 m_object_offset (object_offset), 250 m_object_mod_time (), 251 m_objfile_sp (), 252 m_symfile_ap (), 253 m_ast (new ClangASTContext), 254 m_source_mappings (), 255 m_sections_ap(), 256 m_did_load_objfile (false), 257 m_did_load_symbol_vendor (false), 258 m_did_parse_uuid (false), 259 m_did_init_ast (false), 260 m_file_has_changed (false), 261 m_first_file_changed_log (false) 262 { 263 // Scope for locker below... 264 { 265 Mutex::Locker locker (GetAllocationModuleCollectionMutex()); 266 GetModuleCollection().push_back(this); 267 } 268 269 if (object_name) 270 m_object_name = *object_name; 271 272 if (object_mod_time_ptr) 273 m_object_mod_time = *object_mod_time_ptr; 274 275 Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_OBJECT|LIBLLDB_LOG_MODULES)); 276 if (log) 277 log->Printf ("%p Module::Module((%s) '%s%s%s%s')", 278 static_cast<void*>(this), m_arch.GetArchitectureName(), 279 m_file.GetPath().c_str(), 280 m_object_name.IsEmpty() ? "" : "(", 281 m_object_name.IsEmpty() ? "" : m_object_name.AsCString(""), 282 m_object_name.IsEmpty() ? "" : ")"); 283 } 284 285 Module::Module () : 286 m_mutex (Mutex::eMutexTypeRecursive), 287 m_mod_time (), 288 m_arch (), 289 m_uuid (), 290 m_file (), 291 m_platform_file(), 292 m_remote_install_file (), 293 m_symfile_spec (), 294 m_object_name (), 295 m_object_offset (0), 296 m_object_mod_time (), 297 m_objfile_sp (), 298 m_symfile_ap (), 299 m_ast (new ClangASTContext), 300 m_source_mappings (), 301 m_sections_ap(), 302 m_did_load_objfile (false), 303 m_did_load_symbol_vendor (false), 304 m_did_parse_uuid (false), 305 m_did_init_ast (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 Mutex::Locker locker (m_mutex); 403 if (m_did_parse_uuid == false) 404 { 405 ObjectFile * obj_file = GetObjectFile (); 406 407 if (obj_file != NULL) 408 { 409 obj_file->GetUUID(&m_uuid); 410 m_did_parse_uuid = true; 411 } 412 } 413 return m_uuid; 414 } 415 416 ClangASTContext & 417 Module::GetClangASTContext () 418 { 419 Mutex::Locker locker (m_mutex); 420 if (m_did_init_ast == false) 421 { 422 ObjectFile * objfile = GetObjectFile(); 423 ArchSpec object_arch; 424 if (objfile && objfile->GetArchitecture(object_arch)) 425 { 426 m_did_init_ast = true; 427 428 // LLVM wants this to be set to iOS or MacOSX; if we're working on 429 // a bare-boards type image, change the triple for llvm's benefit. 430 if (object_arch.GetTriple().getVendor() == llvm::Triple::Apple 431 && object_arch.GetTriple().getOS() == llvm::Triple::UnknownOS) 432 { 433 if (object_arch.GetTriple().getArch() == llvm::Triple::arm || 434 object_arch.GetTriple().getArch() == llvm::Triple::aarch64 || 435 object_arch.GetTriple().getArch() == llvm::Triple::thumb) 436 { 437 object_arch.GetTriple().setOS(llvm::Triple::IOS); 438 } 439 else 440 { 441 object_arch.GetTriple().setOS(llvm::Triple::MacOSX); 442 } 443 } 444 m_ast->SetArchitecture (object_arch); 445 } 446 } 447 return *m_ast; 448 } 449 450 void 451 Module::ParseAllDebugSymbols() 452 { 453 Mutex::Locker locker (m_mutex); 454 size_t num_comp_units = GetNumCompileUnits(); 455 if (num_comp_units == 0) 456 return; 457 458 SymbolContext sc; 459 sc.module_sp = shared_from_this(); 460 SymbolVendor *symbols = GetSymbolVendor (); 461 462 for (size_t cu_idx = 0; cu_idx < num_comp_units; cu_idx++) 463 { 464 sc.comp_unit = symbols->GetCompileUnitAtIndex(cu_idx).get(); 465 if (sc.comp_unit) 466 { 467 sc.function = NULL; 468 symbols->ParseVariablesForContext(sc); 469 470 symbols->ParseCompileUnitFunctions(sc); 471 472 for (size_t func_idx = 0; (sc.function = sc.comp_unit->GetFunctionAtIndex(func_idx).get()) != NULL; ++func_idx) 473 { 474 symbols->ParseFunctionBlocks(sc); 475 476 // Parse the variables for this function and all its blocks 477 symbols->ParseVariablesForContext(sc); 478 } 479 480 481 // Parse all types for this compile unit 482 sc.function = NULL; 483 symbols->ParseTypes(sc); 484 } 485 } 486 } 487 488 void 489 Module::CalculateSymbolContext(SymbolContext* sc) 490 { 491 sc->module_sp = shared_from_this(); 492 } 493 494 ModuleSP 495 Module::CalculateSymbolContextModule () 496 { 497 return shared_from_this(); 498 } 499 500 void 501 Module::DumpSymbolContext(Stream *s) 502 { 503 s->Printf(", Module{%p}", static_cast<void*>(this)); 504 } 505 506 size_t 507 Module::GetNumCompileUnits() 508 { 509 Mutex::Locker locker (m_mutex); 510 Timer scoped_timer(__PRETTY_FUNCTION__, 511 "Module::GetNumCompileUnits (module = %p)", 512 static_cast<void*>(this)); 513 SymbolVendor *symbols = GetSymbolVendor (); 514 if (symbols) 515 return symbols->GetNumCompileUnits(); 516 return 0; 517 } 518 519 CompUnitSP 520 Module::GetCompileUnitAtIndex (size_t index) 521 { 522 Mutex::Locker locker (m_mutex); 523 size_t num_comp_units = GetNumCompileUnits (); 524 CompUnitSP cu_sp; 525 526 if (index < num_comp_units) 527 { 528 SymbolVendor *symbols = GetSymbolVendor (); 529 if (symbols) 530 cu_sp = symbols->GetCompileUnitAtIndex(index); 531 } 532 return cu_sp; 533 } 534 535 bool 536 Module::ResolveFileAddress (lldb::addr_t vm_addr, Address& so_addr) 537 { 538 Mutex::Locker locker (m_mutex); 539 Timer scoped_timer(__PRETTY_FUNCTION__, "Module::ResolveFileAddress (vm_addr = 0x%" PRIx64 ")", vm_addr); 540 SectionList *section_list = GetSectionList(); 541 if (section_list) 542 return so_addr.ResolveAddressUsingFileSections(vm_addr, section_list); 543 return false; 544 } 545 546 uint32_t 547 Module::ResolveSymbolContextForAddress (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc, 548 bool resolve_tail_call_address) 549 { 550 Mutex::Locker locker (m_mutex); 551 uint32_t resolved_flags = 0; 552 553 // Clear the result symbol context in case we don't find anything, but don't clear the target 554 sc.Clear(false); 555 556 // Get the section from the section/offset address. 557 SectionSP section_sp (so_addr.GetSection()); 558 559 // Make sure the section matches this module before we try and match anything 560 if (section_sp && section_sp->GetModule().get() == this) 561 { 562 // If the section offset based address resolved itself, then this 563 // is the right module. 564 sc.module_sp = shared_from_this(); 565 resolved_flags |= eSymbolContextModule; 566 567 SymbolVendor* sym_vendor = GetSymbolVendor(); 568 if (!sym_vendor) 569 return resolved_flags; 570 571 // Resolve the compile unit, function, block, line table or line 572 // entry if requested. 573 if (resolve_scope & eSymbolContextCompUnit || 574 resolve_scope & eSymbolContextFunction || 575 resolve_scope & eSymbolContextBlock || 576 resolve_scope & eSymbolContextLineEntry ) 577 { 578 resolved_flags |= sym_vendor->ResolveSymbolContext (so_addr, resolve_scope, sc); 579 } 580 581 // Resolve the symbol if requested, but don't re-look it up if we've already found it. 582 if (resolve_scope & eSymbolContextSymbol && !(resolved_flags & eSymbolContextSymbol)) 583 { 584 Symtab *symtab = sym_vendor->GetSymtab(); 585 if (symtab && so_addr.IsSectionOffset()) 586 { 587 sc.symbol = symtab->FindSymbolContainingFileAddress(so_addr.GetFileAddress()); 588 if (!sc.symbol && 589 resolve_scope & eSymbolContextFunction && !(resolved_flags & eSymbolContextFunction)) 590 { 591 bool verify_unique = false; // No need to check again since ResolveSymbolContext failed to find a symbol at this address. 592 if (ObjectFile *obj_file = sc.module_sp->GetObjectFile()) 593 sc.symbol = obj_file->ResolveSymbolForAddress(so_addr, verify_unique); 594 } 595 596 if (sc.symbol) 597 { 598 if (sc.symbol->IsSynthetic()) 599 { 600 // We have a synthetic symbol so lets check if the object file 601 // from the symbol file in the symbol vendor is different than 602 // the object file for the module, and if so search its symbol 603 // table to see if we can come up with a better symbol. For example 604 // dSYM files on MacOSX have an unstripped symbol table inside of 605 // them. 606 ObjectFile *symtab_objfile = symtab->GetObjectFile(); 607 if (symtab_objfile && symtab_objfile->IsStripped()) 608 { 609 SymbolFile *symfile = sym_vendor->GetSymbolFile(); 610 if (symfile) 611 { 612 ObjectFile *symfile_objfile = symfile->GetObjectFile(); 613 if (symfile_objfile != symtab_objfile) 614 { 615 Symtab *symfile_symtab = symfile_objfile->GetSymtab(); 616 if (symfile_symtab) 617 { 618 Symbol *symbol = symfile_symtab->FindSymbolContainingFileAddress(so_addr.GetFileAddress()); 619 if (symbol && !symbol->IsSynthetic()) 620 { 621 sc.symbol = symbol; 622 } 623 } 624 } 625 } 626 } 627 } 628 resolved_flags |= eSymbolContextSymbol; 629 } 630 } 631 } 632 633 // For function symbols, so_addr may be off by one. This is a convention consistent 634 // with FDE row indices in eh_frame sections, but requires extra logic here to permit 635 // symbol lookup for disassembly and unwind. 636 if (resolve_scope & eSymbolContextSymbol && !(resolved_flags & eSymbolContextSymbol) && 637 resolve_tail_call_address && so_addr.IsSectionOffset()) 638 { 639 Address previous_addr = so_addr; 640 previous_addr.Slide(-1); 641 642 bool do_resolve_tail_call_address = false; // prevent recursion 643 const uint32_t flags = ResolveSymbolContextForAddress(previous_addr, resolve_scope, sc, 644 do_resolve_tail_call_address); 645 if (flags & eSymbolContextSymbol) 646 { 647 AddressRange addr_range; 648 if (sc.GetAddressRange (eSymbolContextFunction | eSymbolContextSymbol, 0, false, addr_range)) 649 { 650 if (addr_range.GetBaseAddress().GetSection() == so_addr.GetSection()) 651 { 652 // If the requested address is one past the address range of a function (i.e. a tail call), 653 // or the decremented address is the start of a function (i.e. some forms of trampoline), 654 // indicate that the symbol has been resolved. 655 if (so_addr.GetOffset() == addr_range.GetBaseAddress().GetOffset() || 656 so_addr.GetOffset() == addr_range.GetBaseAddress().GetOffset() + addr_range.GetByteSize()) 657 { 658 resolved_flags |= flags; 659 } 660 } 661 else 662 { 663 sc.symbol = nullptr; // Don't trust the symbol if the sections didn't match. 664 } 665 } 666 } 667 } 668 } 669 return resolved_flags; 670 } 671 672 uint32_t 673 Module::ResolveSymbolContextForFilePath 674 ( 675 const char *file_path, 676 uint32_t line, 677 bool check_inlines, 678 uint32_t resolve_scope, 679 SymbolContextList& sc_list 680 ) 681 { 682 FileSpec file_spec(file_path, false); 683 return ResolveSymbolContextsForFileSpec (file_spec, line, check_inlines, resolve_scope, sc_list); 684 } 685 686 uint32_t 687 Module::ResolveSymbolContextsForFileSpec (const FileSpec &file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list) 688 { 689 Mutex::Locker locker (m_mutex); 690 Timer scoped_timer(__PRETTY_FUNCTION__, 691 "Module::ResolveSymbolContextForFilePath (%s:%u, check_inlines = %s, resolve_scope = 0x%8.8x)", 692 file_spec.GetPath().c_str(), 693 line, 694 check_inlines ? "yes" : "no", 695 resolve_scope); 696 697 const uint32_t initial_count = sc_list.GetSize(); 698 699 SymbolVendor *symbols = GetSymbolVendor (); 700 if (symbols) 701 symbols->ResolveSymbolContext (file_spec, line, check_inlines, resolve_scope, sc_list); 702 703 return sc_list.GetSize() - initial_count; 704 } 705 706 707 size_t 708 Module::FindGlobalVariables (const ConstString &name, 709 const ClangNamespaceDecl *namespace_decl, 710 bool append, 711 size_t max_matches, 712 VariableList& variables) 713 { 714 SymbolVendor *symbols = GetSymbolVendor (); 715 if (symbols) 716 return symbols->FindGlobalVariables(name, namespace_decl, append, max_matches, variables); 717 return 0; 718 } 719 720 size_t 721 Module::FindGlobalVariables (const RegularExpression& regex, 722 bool append, 723 size_t max_matches, 724 VariableList& variables) 725 { 726 SymbolVendor *symbols = GetSymbolVendor (); 727 if (symbols) 728 return symbols->FindGlobalVariables(regex, append, max_matches, variables); 729 return 0; 730 } 731 732 size_t 733 Module::FindCompileUnits (const FileSpec &path, 734 bool append, 735 SymbolContextList &sc_list) 736 { 737 if (!append) 738 sc_list.Clear(); 739 740 const size_t start_size = sc_list.GetSize(); 741 const size_t num_compile_units = GetNumCompileUnits(); 742 SymbolContext sc; 743 sc.module_sp = shared_from_this(); 744 const bool compare_directory = (bool)path.GetDirectory(); 745 for (size_t i=0; i<num_compile_units; ++i) 746 { 747 sc.comp_unit = GetCompileUnitAtIndex(i).get(); 748 if (sc.comp_unit) 749 { 750 if (FileSpec::Equal (*sc.comp_unit, path, compare_directory)) 751 sc_list.Append(sc); 752 } 753 } 754 return sc_list.GetSize() - start_size; 755 } 756 757 size_t 758 Module::FindFunctions (const ConstString &name, 759 const ClangNamespaceDecl *namespace_decl, 760 uint32_t name_type_mask, 761 bool include_symbols, 762 bool include_inlines, 763 bool append, 764 SymbolContextList& sc_list) 765 { 766 if (!append) 767 sc_list.Clear(); 768 769 const size_t old_size = sc_list.GetSize(); 770 771 // Find all the functions (not symbols, but debug information functions... 772 SymbolVendor *symbols = GetSymbolVendor (); 773 774 if (name_type_mask & eFunctionNameTypeAuto) 775 { 776 ConstString lookup_name; 777 uint32_t lookup_name_type_mask = 0; 778 bool match_name_after_lookup = false; 779 Module::PrepareForFunctionNameLookup (name, 780 name_type_mask, 781 eLanguageTypeUnknown, // TODO: add support 782 lookup_name, 783 lookup_name_type_mask, 784 match_name_after_lookup); 785 786 if (symbols) 787 { 788 symbols->FindFunctions(lookup_name, 789 namespace_decl, 790 lookup_name_type_mask, 791 include_inlines, 792 append, 793 sc_list); 794 795 // Now check our symbol table for symbols that are code symbols if requested 796 if (include_symbols) 797 { 798 Symtab *symtab = symbols->GetSymtab(); 799 if (symtab) 800 symtab->FindFunctionSymbols(lookup_name, lookup_name_type_mask, sc_list); 801 } 802 } 803 804 if (match_name_after_lookup) 805 { 806 SymbolContext sc; 807 size_t i = old_size; 808 while (i<sc_list.GetSize()) 809 { 810 if (sc_list.GetContextAtIndex(i, sc)) 811 { 812 const char *func_name = sc.GetFunctionName().GetCString(); 813 if (func_name && strstr (func_name, name.GetCString()) == NULL) 814 { 815 // Remove the current context 816 sc_list.RemoveContextAtIndex(i); 817 // Don't increment i and continue in the loop 818 continue; 819 } 820 } 821 ++i; 822 } 823 } 824 } 825 else 826 { 827 if (symbols) 828 { 829 symbols->FindFunctions(name, namespace_decl, name_type_mask, include_inlines, append, sc_list); 830 831 // Now check our symbol table for symbols that are code symbols if requested 832 if (include_symbols) 833 { 834 Symtab *symtab = symbols->GetSymtab(); 835 if (symtab) 836 symtab->FindFunctionSymbols(name, name_type_mask, sc_list); 837 } 838 } 839 } 840 841 return sc_list.GetSize() - old_size; 842 } 843 844 size_t 845 Module::FindFunctions (const RegularExpression& regex, 846 bool include_symbols, 847 bool include_inlines, 848 bool append, 849 SymbolContextList& sc_list) 850 { 851 if (!append) 852 sc_list.Clear(); 853 854 const size_t start_size = sc_list.GetSize(); 855 856 SymbolVendor *symbols = GetSymbolVendor (); 857 if (symbols) 858 { 859 symbols->FindFunctions(regex, include_inlines, append, sc_list); 860 861 // Now check our symbol table for symbols that are code symbols if requested 862 if (include_symbols) 863 { 864 Symtab *symtab = symbols->GetSymtab(); 865 if (symtab) 866 { 867 std::vector<uint32_t> symbol_indexes; 868 symtab->AppendSymbolIndexesMatchingRegExAndType (regex, eSymbolTypeAny, Symtab::eDebugAny, Symtab::eVisibilityAny, symbol_indexes); 869 const size_t num_matches = symbol_indexes.size(); 870 if (num_matches) 871 { 872 SymbolContext sc(this); 873 const size_t end_functions_added_index = sc_list.GetSize(); 874 size_t num_functions_added_to_sc_list = end_functions_added_index - start_size; 875 if (num_functions_added_to_sc_list == 0) 876 { 877 // No functions were added, just symbols, so we can just append them 878 for (size_t i=0; i<num_matches; ++i) 879 { 880 sc.symbol = symtab->SymbolAtIndex(symbol_indexes[i]); 881 SymbolType sym_type = sc.symbol->GetType(); 882 if (sc.symbol && (sym_type == eSymbolTypeCode || 883 sym_type == eSymbolTypeResolver)) 884 sc_list.Append(sc); 885 } 886 } 887 else 888 { 889 typedef std::map<lldb::addr_t, uint32_t> FileAddrToIndexMap; 890 FileAddrToIndexMap file_addr_to_index; 891 for (size_t i=start_size; i<end_functions_added_index; ++i) 892 { 893 const SymbolContext &sc = sc_list[i]; 894 if (sc.block) 895 continue; 896 file_addr_to_index[sc.function->GetAddressRange().GetBaseAddress().GetFileAddress()] = i; 897 } 898 899 FileAddrToIndexMap::const_iterator end = file_addr_to_index.end(); 900 // Functions were added so we need to merge symbols into any 901 // existing function symbol contexts 902 for (size_t i=start_size; i<num_matches; ++i) 903 { 904 sc.symbol = symtab->SymbolAtIndex(symbol_indexes[i]); 905 SymbolType sym_type = sc.symbol->GetType(); 906 if (sc.symbol && sc.symbol->ValueIsAddress() && (sym_type == eSymbolTypeCode || sym_type == eSymbolTypeResolver)) 907 { 908 FileAddrToIndexMap::const_iterator pos = file_addr_to_index.find(sc.symbol->GetAddressRef().GetFileAddress()); 909 if (pos == end) 910 sc_list.Append(sc); 911 else 912 sc_list[pos->second].symbol = sc.symbol; 913 } 914 } 915 } 916 } 917 } 918 } 919 } 920 return sc_list.GetSize() - start_size; 921 } 922 923 void 924 Module::FindAddressesForLine (const lldb::TargetSP target_sp, 925 const FileSpec &file, uint32_t line, 926 Function *function, 927 std::vector<Address> &output_local, std::vector<Address> &output_extern) 928 { 929 SearchFilterByModule filter(target_sp, m_file); 930 AddressResolverFileLine resolver(file, line, true); 931 resolver.ResolveAddress (filter); 932 933 for (size_t n=0;n<resolver.GetNumberOfAddresses();n++) 934 { 935 Address addr = resolver.GetAddressRangeAtIndex(n).GetBaseAddress(); 936 Function *f = addr.CalculateSymbolContextFunction(); 937 if (f && f == function) 938 output_local.push_back (addr); 939 else 940 output_extern.push_back (addr); 941 } 942 } 943 944 size_t 945 Module::FindTypes_Impl (const SymbolContext& sc, 946 const ConstString &name, 947 const ClangNamespaceDecl *namespace_decl, 948 bool append, 949 size_t max_matches, 950 TypeList& types) 951 { 952 Timer scoped_timer(__PRETTY_FUNCTION__, __PRETTY_FUNCTION__); 953 if (sc.module_sp.get() == NULL || sc.module_sp.get() == this) 954 { 955 SymbolVendor *symbols = GetSymbolVendor (); 956 if (symbols) 957 return symbols->FindTypes(sc, name, namespace_decl, append, max_matches, types); 958 } 959 return 0; 960 } 961 962 size_t 963 Module::FindTypesInNamespace (const SymbolContext& sc, 964 const ConstString &type_name, 965 const ClangNamespaceDecl *namespace_decl, 966 size_t max_matches, 967 TypeList& type_list) 968 { 969 const bool append = true; 970 return FindTypes_Impl(sc, type_name, namespace_decl, append, max_matches, type_list); 971 } 972 973 lldb::TypeSP 974 Module::FindFirstType (const SymbolContext& sc, 975 const ConstString &name, 976 bool exact_match) 977 { 978 TypeList type_list; 979 const size_t num_matches = FindTypes (sc, name, exact_match, 1, type_list); 980 if (num_matches) 981 return type_list.GetTypeAtIndex(0); 982 return TypeSP(); 983 } 984 985 986 size_t 987 Module::FindTypes (const SymbolContext& sc, 988 const ConstString &name, 989 bool exact_match, 990 size_t max_matches, 991 TypeList& types) 992 { 993 size_t num_matches = 0; 994 const char *type_name_cstr = name.GetCString(); 995 std::string type_scope; 996 std::string type_basename; 997 const bool append = true; 998 TypeClass type_class = eTypeClassAny; 999 if (Type::GetTypeScopeAndBasename (type_name_cstr, type_scope, type_basename, type_class)) 1000 { 1001 // Check if "name" starts with "::" which means the qualified type starts 1002 // from the root namespace and implies and exact match. The typenames we 1003 // get back from clang do not start with "::" so we need to strip this off 1004 // in order to get the qualified names to match 1005 1006 if (type_scope.size() >= 2 && type_scope[0] == ':' && type_scope[1] == ':') 1007 { 1008 type_scope.erase(0,2); 1009 exact_match = true; 1010 } 1011 ConstString type_basename_const_str (type_basename.c_str()); 1012 if (FindTypes_Impl(sc, type_basename_const_str, NULL, append, max_matches, types)) 1013 { 1014 types.RemoveMismatchedTypes (type_scope, type_basename, type_class, exact_match); 1015 num_matches = types.GetSize(); 1016 } 1017 } 1018 else 1019 { 1020 // The type is not in a namespace/class scope, just search for it by basename 1021 if (type_class != eTypeClassAny) 1022 { 1023 // The "type_name_cstr" will have been modified if we have a valid type class 1024 // prefix (like "struct", "class", "union", "typedef" etc). 1025 FindTypes_Impl(sc, ConstString(type_name_cstr), NULL, append, max_matches, types); 1026 types.RemoveMismatchedTypes (type_class); 1027 num_matches = types.GetSize(); 1028 } 1029 else 1030 { 1031 num_matches = FindTypes_Impl(sc, name, NULL, append, max_matches, types); 1032 } 1033 } 1034 1035 return num_matches; 1036 1037 } 1038 1039 SymbolVendor* 1040 Module::GetSymbolVendor (bool can_create, lldb_private::Stream *feedback_strm) 1041 { 1042 Mutex::Locker locker (m_mutex); 1043 if (m_did_load_symbol_vendor == false && can_create) 1044 { 1045 ObjectFile *obj_file = GetObjectFile (); 1046 if (obj_file != NULL) 1047 { 1048 Timer scoped_timer(__PRETTY_FUNCTION__, __PRETTY_FUNCTION__); 1049 m_symfile_ap.reset(SymbolVendor::FindPlugin(shared_from_this(), feedback_strm)); 1050 m_did_load_symbol_vendor = true; 1051 } 1052 } 1053 return m_symfile_ap.get(); 1054 } 1055 1056 void 1057 Module::SetFileSpecAndObjectName (const FileSpec &file, const ConstString &object_name) 1058 { 1059 // Container objects whose paths do not specify a file directly can call 1060 // this function to correct the file and object names. 1061 m_file = file; 1062 m_mod_time = file.GetModificationTime(); 1063 m_object_name = object_name; 1064 } 1065 1066 const ArchSpec& 1067 Module::GetArchitecture () const 1068 { 1069 return m_arch; 1070 } 1071 1072 std::string 1073 Module::GetSpecificationDescription () const 1074 { 1075 std::string spec(GetFileSpec().GetPath()); 1076 if (m_object_name) 1077 { 1078 spec += '('; 1079 spec += m_object_name.GetCString(); 1080 spec += ')'; 1081 } 1082 return spec; 1083 } 1084 1085 void 1086 Module::GetDescription (Stream *s, lldb::DescriptionLevel level) 1087 { 1088 Mutex::Locker locker (m_mutex); 1089 1090 if (level >= eDescriptionLevelFull) 1091 { 1092 if (m_arch.IsValid()) 1093 s->Printf("(%s) ", m_arch.GetArchitectureName()); 1094 } 1095 1096 if (level == eDescriptionLevelBrief) 1097 { 1098 const char *filename = m_file.GetFilename().GetCString(); 1099 if (filename) 1100 s->PutCString (filename); 1101 } 1102 else 1103 { 1104 char path[PATH_MAX]; 1105 if (m_file.GetPath(path, sizeof(path))) 1106 s->PutCString(path); 1107 } 1108 1109 const char *object_name = m_object_name.GetCString(); 1110 if (object_name) 1111 s->Printf("(%s)", object_name); 1112 } 1113 1114 void 1115 Module::ReportError (const char *format, ...) 1116 { 1117 if (format && format[0]) 1118 { 1119 StreamString strm; 1120 strm.PutCString("error: "); 1121 GetDescription(&strm, lldb::eDescriptionLevelBrief); 1122 strm.PutChar (' '); 1123 va_list args; 1124 va_start (args, format); 1125 strm.PrintfVarArg(format, args); 1126 va_end (args); 1127 1128 const int format_len = strlen(format); 1129 if (format_len > 0) 1130 { 1131 const char last_char = format[format_len-1]; 1132 if (last_char != '\n' || last_char != '\r') 1133 strm.EOL(); 1134 } 1135 Host::SystemLog (Host::eSystemLogError, "%s", strm.GetString().c_str()); 1136 1137 } 1138 } 1139 1140 bool 1141 Module::FileHasChanged () const 1142 { 1143 if (m_file_has_changed == false) 1144 m_file_has_changed = (m_file.GetModificationTime() != m_mod_time); 1145 return m_file_has_changed; 1146 } 1147 1148 void 1149 Module::ReportErrorIfModifyDetected (const char *format, ...) 1150 { 1151 if (m_first_file_changed_log == false) 1152 { 1153 if (FileHasChanged ()) 1154 { 1155 m_first_file_changed_log = true; 1156 if (format) 1157 { 1158 StreamString strm; 1159 strm.PutCString("error: the object file "); 1160 GetDescription(&strm, lldb::eDescriptionLevelFull); 1161 strm.PutCString (" has been modified\n"); 1162 1163 va_list args; 1164 va_start (args, format); 1165 strm.PrintfVarArg(format, args); 1166 va_end (args); 1167 1168 const int format_len = strlen(format); 1169 if (format_len > 0) 1170 { 1171 const char last_char = format[format_len-1]; 1172 if (last_char != '\n' || last_char != '\r') 1173 strm.EOL(); 1174 } 1175 strm.PutCString("The debug session should be aborted as the original debug information has been overwritten.\n"); 1176 Host::SystemLog (Host::eSystemLogError, "%s", strm.GetString().c_str()); 1177 } 1178 } 1179 } 1180 } 1181 1182 void 1183 Module::ReportWarning (const char *format, ...) 1184 { 1185 if (format && format[0]) 1186 { 1187 StreamString strm; 1188 strm.PutCString("warning: "); 1189 GetDescription(&strm, lldb::eDescriptionLevelFull); 1190 strm.PutChar (' '); 1191 1192 va_list args; 1193 va_start (args, format); 1194 strm.PrintfVarArg(format, args); 1195 va_end (args); 1196 1197 const int format_len = strlen(format); 1198 if (format_len > 0) 1199 { 1200 const char last_char = format[format_len-1]; 1201 if (last_char != '\n' || last_char != '\r') 1202 strm.EOL(); 1203 } 1204 Host::SystemLog (Host::eSystemLogWarning, "%s", strm.GetString().c_str()); 1205 } 1206 } 1207 1208 void 1209 Module::LogMessage (Log *log, const char *format, ...) 1210 { 1211 if (log) 1212 { 1213 StreamString log_message; 1214 GetDescription(&log_message, lldb::eDescriptionLevelFull); 1215 log_message.PutCString (": "); 1216 va_list args; 1217 va_start (args, format); 1218 log_message.PrintfVarArg (format, args); 1219 va_end (args); 1220 log->PutCString(log_message.GetString().c_str()); 1221 } 1222 } 1223 1224 void 1225 Module::LogMessageVerboseBacktrace (Log *log, const char *format, ...) 1226 { 1227 if (log) 1228 { 1229 StreamString log_message; 1230 GetDescription(&log_message, lldb::eDescriptionLevelFull); 1231 log_message.PutCString (": "); 1232 va_list args; 1233 va_start (args, format); 1234 log_message.PrintfVarArg (format, args); 1235 va_end (args); 1236 if (log->GetVerbose()) 1237 { 1238 std::string back_trace; 1239 llvm::raw_string_ostream stream(back_trace); 1240 llvm::sys::PrintStackTrace(stream); 1241 log_message.PutCString(back_trace.c_str()); 1242 } 1243 log->PutCString(log_message.GetString().c_str()); 1244 } 1245 } 1246 1247 void 1248 Module::Dump(Stream *s) 1249 { 1250 Mutex::Locker locker (m_mutex); 1251 //s->Printf("%.*p: ", (int)sizeof(void*) * 2, this); 1252 s->Indent(); 1253 s->Printf("Module %s%s%s%s\n", 1254 m_file.GetPath().c_str(), 1255 m_object_name ? "(" : "", 1256 m_object_name ? m_object_name.GetCString() : "", 1257 m_object_name ? ")" : ""); 1258 1259 s->IndentMore(); 1260 1261 ObjectFile *objfile = GetObjectFile (); 1262 if (objfile) 1263 objfile->Dump(s); 1264 1265 SymbolVendor *symbols = GetSymbolVendor (); 1266 if (symbols) 1267 symbols->Dump(s); 1268 1269 s->IndentLess(); 1270 } 1271 1272 1273 TypeList* 1274 Module::GetTypeList () 1275 { 1276 SymbolVendor *symbols = GetSymbolVendor (); 1277 if (symbols) 1278 return &symbols->GetTypeList(); 1279 return NULL; 1280 } 1281 1282 const ConstString & 1283 Module::GetObjectName() const 1284 { 1285 return m_object_name; 1286 } 1287 1288 ObjectFile * 1289 Module::GetObjectFile() 1290 { 1291 Mutex::Locker locker (m_mutex); 1292 if (m_did_load_objfile == false) 1293 { 1294 Timer scoped_timer(__PRETTY_FUNCTION__, 1295 "Module::GetObjectFile () module = %s", GetFileSpec().GetFilename().AsCString("")); 1296 DataBufferSP data_sp; 1297 lldb::offset_t data_offset = 0; 1298 const lldb::offset_t file_size = m_file.GetByteSize(); 1299 if (file_size > m_object_offset) 1300 { 1301 m_did_load_objfile = true; 1302 m_objfile_sp = ObjectFile::FindPlugin (shared_from_this(), 1303 &m_file, 1304 m_object_offset, 1305 file_size - m_object_offset, 1306 data_sp, 1307 data_offset); 1308 if (m_objfile_sp) 1309 { 1310 // Once we get the object file, update our module with the object file's 1311 // architecture since it might differ in vendor/os if some parts were 1312 // unknown. But since the matching arch might already be more specific 1313 // than the generic COFF architecture, only merge in those values that 1314 // overwrite unspecified unknown values. 1315 ArchSpec new_arch; 1316 m_objfile_sp->GetArchitecture(new_arch); 1317 m_arch.MergeFrom(new_arch); 1318 } 1319 else 1320 { 1321 ReportError ("failed to load objfile for %s", GetFileSpec().GetPath().c_str()); 1322 } 1323 } 1324 } 1325 return m_objfile_sp.get(); 1326 } 1327 1328 SectionList * 1329 Module::GetSectionList() 1330 { 1331 // Populate m_unified_sections_ap with sections from objfile. 1332 if (m_sections_ap.get() == NULL) 1333 { 1334 ObjectFile *obj_file = GetObjectFile(); 1335 if (obj_file) 1336 obj_file->CreateSections(*GetUnifiedSectionList()); 1337 } 1338 return m_sections_ap.get(); 1339 } 1340 1341 void 1342 Module::SectionFileAddressesChanged () 1343 { 1344 ObjectFile *obj_file = GetObjectFile (); 1345 if (obj_file) 1346 obj_file->SectionFileAddressesChanged (); 1347 SymbolVendor* sym_vendor = GetSymbolVendor(); 1348 if (sym_vendor) 1349 sym_vendor->SectionFileAddressesChanged (); 1350 } 1351 1352 SectionList * 1353 Module::GetUnifiedSectionList() 1354 { 1355 // Populate m_unified_sections_ap with sections from objfile. 1356 if (m_sections_ap.get() == NULL) 1357 m_sections_ap.reset(new SectionList()); 1358 return m_sections_ap.get(); 1359 } 1360 1361 const Symbol * 1362 Module::FindFirstSymbolWithNameAndType (const ConstString &name, SymbolType symbol_type) 1363 { 1364 Timer scoped_timer(__PRETTY_FUNCTION__, 1365 "Module::FindFirstSymbolWithNameAndType (name = %s, type = %i)", 1366 name.AsCString(), 1367 symbol_type); 1368 SymbolVendor* sym_vendor = GetSymbolVendor(); 1369 if (sym_vendor) 1370 { 1371 Symtab *symtab = sym_vendor->GetSymtab(); 1372 if (symtab) 1373 return symtab->FindFirstSymbolWithNameAndType (name, symbol_type, Symtab::eDebugAny, Symtab::eVisibilityAny); 1374 } 1375 return NULL; 1376 } 1377 void 1378 Module::SymbolIndicesToSymbolContextList (Symtab *symtab, std::vector<uint32_t> &symbol_indexes, SymbolContextList &sc_list) 1379 { 1380 // No need to protect this call using m_mutex all other method calls are 1381 // already thread safe. 1382 1383 size_t num_indices = symbol_indexes.size(); 1384 if (num_indices > 0) 1385 { 1386 SymbolContext sc; 1387 CalculateSymbolContext (&sc); 1388 for (size_t i = 0; i < num_indices; i++) 1389 { 1390 sc.symbol = symtab->SymbolAtIndex (symbol_indexes[i]); 1391 if (sc.symbol) 1392 sc_list.Append (sc); 1393 } 1394 } 1395 } 1396 1397 size_t 1398 Module::FindFunctionSymbols (const ConstString &name, 1399 uint32_t name_type_mask, 1400 SymbolContextList& sc_list) 1401 { 1402 Timer scoped_timer(__PRETTY_FUNCTION__, 1403 "Module::FindSymbolsFunctions (name = %s, mask = 0x%8.8x)", 1404 name.AsCString(), 1405 name_type_mask); 1406 SymbolVendor* sym_vendor = GetSymbolVendor(); 1407 if (sym_vendor) 1408 { 1409 Symtab *symtab = sym_vendor->GetSymtab(); 1410 if (symtab) 1411 return symtab->FindFunctionSymbols (name, name_type_mask, sc_list); 1412 } 1413 return 0; 1414 } 1415 1416 size_t 1417 Module::FindSymbolsWithNameAndType (const ConstString &name, SymbolType symbol_type, SymbolContextList &sc_list) 1418 { 1419 // No need to protect this call using m_mutex all other method calls are 1420 // already thread safe. 1421 1422 1423 Timer scoped_timer(__PRETTY_FUNCTION__, 1424 "Module::FindSymbolsWithNameAndType (name = %s, type = %i)", 1425 name.AsCString(), 1426 symbol_type); 1427 const size_t initial_size = sc_list.GetSize(); 1428 SymbolVendor* sym_vendor = GetSymbolVendor(); 1429 if (sym_vendor) 1430 { 1431 Symtab *symtab = sym_vendor->GetSymtab(); 1432 if (symtab) 1433 { 1434 std::vector<uint32_t> symbol_indexes; 1435 symtab->FindAllSymbolsWithNameAndType (name, symbol_type, symbol_indexes); 1436 SymbolIndicesToSymbolContextList (symtab, symbol_indexes, sc_list); 1437 } 1438 } 1439 return sc_list.GetSize() - initial_size; 1440 } 1441 1442 size_t 1443 Module::FindSymbolsMatchingRegExAndType (const RegularExpression ®ex, SymbolType symbol_type, SymbolContextList &sc_list) 1444 { 1445 // No need to protect this call using m_mutex all other method calls are 1446 // already thread safe. 1447 1448 Timer scoped_timer(__PRETTY_FUNCTION__, 1449 "Module::FindSymbolsMatchingRegExAndType (regex = %s, type = %i)", 1450 regex.GetText(), 1451 symbol_type); 1452 const size_t initial_size = sc_list.GetSize(); 1453 SymbolVendor* sym_vendor = GetSymbolVendor(); 1454 if (sym_vendor) 1455 { 1456 Symtab *symtab = sym_vendor->GetSymtab(); 1457 if (symtab) 1458 { 1459 std::vector<uint32_t> symbol_indexes; 1460 symtab->FindAllSymbolsMatchingRexExAndType (regex, symbol_type, Symtab::eDebugAny, Symtab::eVisibilityAny, symbol_indexes); 1461 SymbolIndicesToSymbolContextList (symtab, symbol_indexes, sc_list); 1462 } 1463 } 1464 return sc_list.GetSize() - initial_size; 1465 } 1466 1467 void 1468 Module::SetSymbolFileFileSpec (const FileSpec &file) 1469 { 1470 if (!file.Exists()) 1471 return; 1472 if (m_symfile_ap) 1473 { 1474 // Remove any sections in the unified section list that come from the current symbol vendor. 1475 SectionList *section_list = GetSectionList(); 1476 SymbolFile *symbol_file = m_symfile_ap->GetSymbolFile(); 1477 if (section_list && symbol_file) 1478 { 1479 ObjectFile *obj_file = symbol_file->GetObjectFile(); 1480 // Make sure we have an object file and that the symbol vendor's objfile isn't 1481 // the same as the module's objfile before we remove any sections for it... 1482 if (obj_file) 1483 { 1484 // Check to make sure we aren't trying to specify the file we already have 1485 if (obj_file->GetFileSpec() == file) 1486 { 1487 // We are being told to add the exact same file that we already have 1488 // we don't have to do anything. 1489 return; 1490 } 1491 1492 // The symbol file might be a directory bundle ("/tmp/a.out.dSYM") instead 1493 // of a full path to the symbol file within the bundle 1494 // ("/tmp/a.out.dSYM/Contents/Resources/DWARF/a.out"). So we need to check this 1495 1496 if (file.IsDirectory()) 1497 { 1498 std::string new_path(file.GetPath()); 1499 std::string old_path(obj_file->GetFileSpec().GetPath()); 1500 if (old_path.find(new_path) == 0) 1501 { 1502 // We specified the same bundle as the symbol file that we already have 1503 return; 1504 } 1505 } 1506 1507 if (obj_file != m_objfile_sp.get()) 1508 { 1509 size_t num_sections = section_list->GetNumSections (0); 1510 for (size_t idx = num_sections; idx > 0; --idx) 1511 { 1512 lldb::SectionSP section_sp (section_list->GetSectionAtIndex (idx - 1)); 1513 if (section_sp->GetObjectFile() == obj_file) 1514 { 1515 section_list->DeleteSection (idx - 1); 1516 } 1517 } 1518 } 1519 } 1520 } 1521 // Keep all old symbol files around in case there are any lingering type references in 1522 // any SBValue objects that might have been handed out. 1523 m_old_symfiles.push_back(std::move(m_symfile_ap)); 1524 } 1525 m_symfile_spec = file; 1526 m_symfile_ap.reset(); 1527 m_did_load_symbol_vendor = false; 1528 } 1529 1530 bool 1531 Module::IsExecutable () 1532 { 1533 if (GetObjectFile() == NULL) 1534 return false; 1535 else 1536 return GetObjectFile()->IsExecutable(); 1537 } 1538 1539 bool 1540 Module::IsLoadedInTarget (Target *target) 1541 { 1542 ObjectFile *obj_file = GetObjectFile(); 1543 if (obj_file) 1544 { 1545 SectionList *sections = GetSectionList(); 1546 if (sections != NULL) 1547 { 1548 size_t num_sections = sections->GetSize(); 1549 for (size_t sect_idx = 0; sect_idx < num_sections; sect_idx++) 1550 { 1551 SectionSP section_sp = sections->GetSectionAtIndex(sect_idx); 1552 if (section_sp->GetLoadBaseAddress(target) != LLDB_INVALID_ADDRESS) 1553 { 1554 return true; 1555 } 1556 } 1557 } 1558 } 1559 return false; 1560 } 1561 1562 bool 1563 Module::LoadScriptingResourceInTarget (Target *target, Error& error, Stream* feedback_stream) 1564 { 1565 if (!target) 1566 { 1567 error.SetErrorString("invalid destination Target"); 1568 return false; 1569 } 1570 1571 LoadScriptFromSymFile should_load = target->TargetProperties::GetLoadScriptFromSymbolFile(); 1572 1573 if (should_load == eLoadScriptFromSymFileFalse) 1574 return false; 1575 1576 Debugger &debugger = target->GetDebugger(); 1577 const ScriptLanguage script_language = debugger.GetScriptLanguage(); 1578 if (script_language != eScriptLanguageNone) 1579 { 1580 1581 PlatformSP platform_sp(target->GetPlatform()); 1582 1583 if (!platform_sp) 1584 { 1585 error.SetErrorString("invalid Platform"); 1586 return false; 1587 } 1588 1589 FileSpecList file_specs = platform_sp->LocateExecutableScriptingResources (target, 1590 *this, 1591 feedback_stream); 1592 1593 1594 const uint32_t num_specs = file_specs.GetSize(); 1595 if (num_specs) 1596 { 1597 ScriptInterpreter *script_interpreter = debugger.GetCommandInterpreter().GetScriptInterpreter(); 1598 if (script_interpreter) 1599 { 1600 for (uint32_t i=0; i<num_specs; ++i) 1601 { 1602 FileSpec scripting_fspec (file_specs.GetFileSpecAtIndex(i)); 1603 if (scripting_fspec && scripting_fspec.Exists()) 1604 { 1605 if (should_load == eLoadScriptFromSymFileWarn) 1606 { 1607 if (feedback_stream) 1608 feedback_stream->Printf("warning: '%s' contains a debug script. To run this script in " 1609 "this debug session:\n\n command script import \"%s\"\n\n" 1610 "To run all discovered debug scripts in this session:\n\n" 1611 " settings set target.load-script-from-symbol-file true\n", 1612 GetFileSpec().GetFileNameStrippingExtension().GetCString(), 1613 scripting_fspec.GetPath().c_str()); 1614 return false; 1615 } 1616 StreamString scripting_stream; 1617 scripting_fspec.Dump(&scripting_stream); 1618 const bool can_reload = true; 1619 const bool init_lldb_globals = false; 1620 bool did_load = script_interpreter->LoadScriptingModule(scripting_stream.GetData(), 1621 can_reload, 1622 init_lldb_globals, 1623 error); 1624 if (!did_load) 1625 return false; 1626 } 1627 } 1628 } 1629 else 1630 { 1631 error.SetErrorString("invalid ScriptInterpreter"); 1632 return false; 1633 } 1634 } 1635 } 1636 return true; 1637 } 1638 1639 bool 1640 Module::SetArchitecture (const ArchSpec &new_arch) 1641 { 1642 if (!m_arch.IsValid()) 1643 { 1644 m_arch = new_arch; 1645 return true; 1646 } 1647 return m_arch.IsCompatibleMatch(new_arch); 1648 } 1649 1650 bool 1651 Module::SetLoadAddress (Target &target, lldb::addr_t value, bool value_is_offset, bool &changed) 1652 { 1653 ObjectFile *object_file = GetObjectFile(); 1654 if (object_file) 1655 { 1656 changed = object_file->SetLoadAddress(target, value, value_is_offset); 1657 return true; 1658 } 1659 else 1660 { 1661 changed = false; 1662 } 1663 return false; 1664 } 1665 1666 1667 bool 1668 Module::MatchesModuleSpec (const ModuleSpec &module_ref) 1669 { 1670 const UUID &uuid = module_ref.GetUUID(); 1671 1672 if (uuid.IsValid()) 1673 { 1674 // If the UUID matches, then nothing more needs to match... 1675 if (uuid == GetUUID()) 1676 return true; 1677 else 1678 return false; 1679 } 1680 1681 const FileSpec &file_spec = module_ref.GetFileSpec(); 1682 if (file_spec) 1683 { 1684 if (!FileSpec::Equal (file_spec, m_file, (bool)file_spec.GetDirectory())) 1685 return false; 1686 } 1687 1688 const FileSpec &platform_file_spec = module_ref.GetPlatformFileSpec(); 1689 if (platform_file_spec) 1690 { 1691 if (!FileSpec::Equal (platform_file_spec, GetPlatformFileSpec (), (bool)platform_file_spec.GetDirectory())) 1692 return false; 1693 } 1694 1695 const ArchSpec &arch = module_ref.GetArchitecture(); 1696 if (arch.IsValid()) 1697 { 1698 if (!m_arch.IsCompatibleMatch(arch)) 1699 return false; 1700 } 1701 1702 const ConstString &object_name = module_ref.GetObjectName(); 1703 if (object_name) 1704 { 1705 if (object_name != GetObjectName()) 1706 return false; 1707 } 1708 return true; 1709 } 1710 1711 bool 1712 Module::FindSourceFile (const FileSpec &orig_spec, FileSpec &new_spec) const 1713 { 1714 Mutex::Locker locker (m_mutex); 1715 return m_source_mappings.FindFile (orig_spec, new_spec); 1716 } 1717 1718 bool 1719 Module::RemapSourceFile (const char *path, std::string &new_path) const 1720 { 1721 Mutex::Locker locker (m_mutex); 1722 return m_source_mappings.RemapPath(path, new_path); 1723 } 1724 1725 uint32_t 1726 Module::GetVersion (uint32_t *versions, uint32_t num_versions) 1727 { 1728 ObjectFile *obj_file = GetObjectFile(); 1729 if (obj_file) 1730 return obj_file->GetVersion (versions, num_versions); 1731 1732 if (versions && num_versions) 1733 { 1734 for (uint32_t i=0; i<num_versions; ++i) 1735 versions[i] = LLDB_INVALID_MODULE_VERSION; 1736 } 1737 return 0; 1738 } 1739 1740 void 1741 Module::PrepareForFunctionNameLookup (const ConstString &name, 1742 uint32_t name_type_mask, 1743 LanguageType language, 1744 ConstString &lookup_name, 1745 uint32_t &lookup_name_type_mask, 1746 bool &match_name_after_lookup) 1747 { 1748 const char *name_cstr = name.GetCString(); 1749 lookup_name_type_mask = eFunctionNameTypeNone; 1750 match_name_after_lookup = false; 1751 1752 llvm::StringRef basename; 1753 llvm::StringRef context; 1754 1755 if (name_type_mask & eFunctionNameTypeAuto) 1756 { 1757 if (CPPLanguageRuntime::IsCPPMangledName (name_cstr)) 1758 lookup_name_type_mask = eFunctionNameTypeFull; 1759 else if ((language == eLanguageTypeUnknown || 1760 LanguageRuntime::LanguageIsObjC(language)) && 1761 ObjCLanguageRuntime::IsPossibleObjCMethodName (name_cstr)) 1762 lookup_name_type_mask = eFunctionNameTypeFull; 1763 else if (LanguageRuntime::LanguageIsC(language)) 1764 { 1765 lookup_name_type_mask = eFunctionNameTypeFull; 1766 } 1767 else 1768 { 1769 if ((language == eLanguageTypeUnknown || 1770 LanguageRuntime::LanguageIsObjC(language)) && 1771 ObjCLanguageRuntime::IsPossibleObjCSelector(name_cstr)) 1772 lookup_name_type_mask |= eFunctionNameTypeSelector; 1773 1774 CPPLanguageRuntime::MethodName cpp_method (name); 1775 basename = cpp_method.GetBasename(); 1776 if (basename.empty()) 1777 { 1778 if (CPPLanguageRuntime::ExtractContextAndIdentifier (name_cstr, context, basename)) 1779 lookup_name_type_mask |= (eFunctionNameTypeMethod | eFunctionNameTypeBase); 1780 else 1781 lookup_name_type_mask |= eFunctionNameTypeFull; 1782 } 1783 else 1784 { 1785 lookup_name_type_mask |= (eFunctionNameTypeMethod | eFunctionNameTypeBase); 1786 } 1787 } 1788 } 1789 else 1790 { 1791 lookup_name_type_mask = name_type_mask; 1792 if (lookup_name_type_mask & eFunctionNameTypeMethod || name_type_mask & eFunctionNameTypeBase) 1793 { 1794 // If they've asked for a CPP method or function name and it can't be that, we don't 1795 // even need to search for CPP methods or names. 1796 CPPLanguageRuntime::MethodName cpp_method (name); 1797 if (cpp_method.IsValid()) 1798 { 1799 basename = cpp_method.GetBasename(); 1800 1801 if (!cpp_method.GetQualifiers().empty()) 1802 { 1803 // There is a "const" or other qualifier following the end of the function parens, 1804 // this can't be a eFunctionNameTypeBase 1805 lookup_name_type_mask &= ~(eFunctionNameTypeBase); 1806 if (lookup_name_type_mask == eFunctionNameTypeNone) 1807 return; 1808 } 1809 } 1810 else 1811 { 1812 // If the CPP method parser didn't manage to chop this up, try to fill in the base name if we can. 1813 // If a::b::c is passed in, we need to just look up "c", and then we'll filter the result later. 1814 CPPLanguageRuntime::ExtractContextAndIdentifier (name_cstr, context, basename); 1815 } 1816 } 1817 1818 if (lookup_name_type_mask & eFunctionNameTypeSelector) 1819 { 1820 if (!ObjCLanguageRuntime::IsPossibleObjCSelector(name_cstr)) 1821 { 1822 lookup_name_type_mask &= ~(eFunctionNameTypeSelector); 1823 if (lookup_name_type_mask == eFunctionNameTypeNone) 1824 return; 1825 } 1826 } 1827 } 1828 1829 if (!basename.empty()) 1830 { 1831 // The name supplied was a partial C++ path like "a::count". In this case we want to do a 1832 // lookup on the basename "count" and then make sure any matching results contain "a::count" 1833 // so that it would match "b::a::count" and "a::count". This is why we set "match_name_after_lookup" 1834 // to true 1835 lookup_name.SetString(basename); 1836 match_name_after_lookup = true; 1837 } 1838 else 1839 { 1840 // The name is already correct, just use the exact name as supplied, and we won't need 1841 // to check if any matches contain "name" 1842 lookup_name = name; 1843 match_name_after_lookup = false; 1844 } 1845 } 1846 1847 ModuleSP 1848 Module::CreateJITModule (const lldb::ObjectFileJITDelegateSP &delegate_sp) 1849 { 1850 if (delegate_sp) 1851 { 1852 // Must create a module and place it into a shared pointer before 1853 // we can create an object file since it has a std::weak_ptr back 1854 // to the module, so we need to control the creation carefully in 1855 // this static function 1856 ModuleSP module_sp(new Module()); 1857 module_sp->m_objfile_sp.reset (new ObjectFileJIT (module_sp, delegate_sp)); 1858 if (module_sp->m_objfile_sp) 1859 { 1860 // Once we get the object file, update our module with the object file's 1861 // architecture since it might differ in vendor/os if some parts were 1862 // unknown. 1863 module_sp->m_objfile_sp->GetArchitecture (module_sp->m_arch); 1864 } 1865 return module_sp; 1866 } 1867 return ModuleSP(); 1868 } 1869 1870 bool 1871 Module::GetIsDynamicLinkEditor() 1872 { 1873 ObjectFile * obj_file = GetObjectFile (); 1874 1875 if (obj_file) 1876 return obj_file->GetIsDynamicLinkEditor(); 1877 1878 return false; 1879 } 1880