1 //===-- SymbolFileDWARFDebugMap.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 "SymbolFileDWARFDebugMap.h" 11 12 #include "DWARFDebugAranges.h" 13 14 #include "lldb/Core/RangeMap.h" 15 #include "lldb/Core/Module.h" 16 #include "lldb/Core/ModuleList.h" 17 #include "lldb/Core/PluginManager.h" 18 #include "lldb/Core/RegularExpression.h" 19 #include "lldb/Core/Section.h" 20 21 //#define DEBUG_OSO_DMAP // DO NOT CHECKIN WITH THIS NOT COMMENTED OUT 22 #if defined(DEBUG_OSO_DMAP) 23 #include "lldb/Core/StreamFile.h" 24 #endif 25 #include "lldb/Core/Timer.h" 26 27 #include "lldb/Symbol/ClangExternalASTSourceCallbacks.h" 28 #include "lldb/Symbol/CompileUnit.h" 29 #include "lldb/Symbol/LineTable.h" 30 #include "lldb/Symbol/ObjectFile.h" 31 #include "lldb/Symbol/SymbolVendor.h" 32 #include "lldb/Symbol/VariableList.h" 33 34 #include "LogChannelDWARF.h" 35 #include "SymbolFileDWARF.h" 36 37 using namespace lldb; 38 using namespace lldb_private; 39 40 // Subclass lldb_private::Module so we can intercept the "Module::GetObjectFile()" 41 // (so we can fixup the object file sections) and also for "Module::GetSymbolVendor()" 42 // (so we can fixup the symbol file id. 43 44 45 46 47 const SymbolFileDWARFDebugMap::FileRangeMap & 48 SymbolFileDWARFDebugMap::CompileUnitInfo::GetFileRangeMap(SymbolFileDWARFDebugMap *exe_symfile) 49 { 50 if (file_range_map_valid) 51 return file_range_map; 52 53 file_range_map_valid = true; 54 55 Module *oso_module = exe_symfile->GetModuleByCompUnitInfo (this); 56 if (!oso_module) 57 return file_range_map; 58 59 ObjectFile *oso_objfile = oso_module->GetObjectFile(); 60 if (!oso_objfile) 61 return file_range_map; 62 63 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_MAP)); 64 if (log) 65 { 66 ConstString object_name (oso_module->GetObjectName()); 67 log->Printf("%p: SymbolFileDWARFDebugMap::CompileUnitInfo::GetFileRangeMap ('%s')", 68 static_cast<void*>(this), 69 oso_module->GetSpecificationDescription().c_str()); 70 } 71 72 std::vector<SymbolFileDWARFDebugMap::CompileUnitInfo *> cu_infos; 73 if (exe_symfile->GetCompUnitInfosForModule(oso_module, cu_infos)) 74 { 75 for (auto comp_unit_info : cu_infos) 76 { 77 Symtab *exe_symtab = exe_symfile->GetObjectFile()->GetSymtab(); 78 ModuleSP oso_module_sp (oso_objfile->GetModule()); 79 Symtab *oso_symtab = oso_objfile->GetSymtab(); 80 81 ///const uint32_t fun_resolve_flags = SymbolContext::Module | eSymbolContextCompUnit | eSymbolContextFunction; 82 //SectionList *oso_sections = oso_objfile->Sections(); 83 // Now we need to make sections that map from zero based object 84 // file addresses to where things ended up in the main executable. 85 86 assert (comp_unit_info->first_symbol_index != UINT32_MAX); 87 // End index is one past the last valid symbol index 88 const uint32_t oso_end_idx = comp_unit_info->last_symbol_index + 1; 89 for (uint32_t idx = comp_unit_info->first_symbol_index + 2; // Skip the N_SO and N_OSO 90 idx < oso_end_idx; 91 ++idx) 92 { 93 Symbol *exe_symbol = exe_symtab->SymbolAtIndex(idx); 94 if (exe_symbol) 95 { 96 if (exe_symbol->IsDebug() == false) 97 continue; 98 99 switch (exe_symbol->GetType()) 100 { 101 default: 102 break; 103 104 case eSymbolTypeCode: 105 { 106 // For each N_FUN, or function that we run into in the debug map 107 // we make a new section that we add to the sections found in the 108 // .o file. This new section has the file address set to what the 109 // addresses are in the .o file, and the load address is adjusted 110 // to match where it ended up in the final executable! We do this 111 // before we parse any dwarf info so that when it goes get parsed 112 // all section/offset addresses that get registered will resolve 113 // correctly to the new addresses in the main executable. 114 115 // First we find the original symbol in the .o file's symbol table 116 Symbol *oso_fun_symbol = oso_symtab->FindFirstSymbolWithNameAndType (exe_symbol->GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled), 117 eSymbolTypeCode, 118 Symtab::eDebugNo, 119 Symtab::eVisibilityAny); 120 if (oso_fun_symbol) 121 { 122 // Add the inverse OSO file address to debug map entry mapping 123 exe_symfile->AddOSOFileRange (this, 124 exe_symbol->GetAddressRef().GetFileAddress(), 125 oso_fun_symbol->GetAddressRef().GetFileAddress(), 126 std::min<addr_t>(exe_symbol->GetByteSize(), oso_fun_symbol->GetByteSize())); 127 128 } 129 } 130 break; 131 132 case eSymbolTypeData: 133 { 134 // For each N_GSYM we remap the address for the global by making 135 // a new section that we add to the sections found in the .o file. 136 // This new section has the file address set to what the 137 // addresses are in the .o file, and the load address is adjusted 138 // to match where it ended up in the final executable! We do this 139 // before we parse any dwarf info so that when it goes get parsed 140 // all section/offset addresses that get registered will resolve 141 // correctly to the new addresses in the main executable. We 142 // initially set the section size to be 1 byte, but will need to 143 // fix up these addresses further after all globals have been 144 // parsed to span the gaps, or we can find the global variable 145 // sizes from the DWARF info as we are parsing. 146 147 // Next we find the non-stab entry that corresponds to the N_GSYM in the .o file 148 Symbol *oso_gsym_symbol = oso_symtab->FindFirstSymbolWithNameAndType (exe_symbol->GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled), 149 eSymbolTypeData, 150 Symtab::eDebugNo, 151 Symtab::eVisibilityAny); 152 if (exe_symbol && oso_gsym_symbol && 153 exe_symbol->ValueIsAddress() && 154 oso_gsym_symbol->ValueIsAddress()) 155 { 156 // Add the inverse OSO file address to debug map entry mapping 157 exe_symfile->AddOSOFileRange (this, 158 exe_symbol->GetAddressRef().GetFileAddress(), 159 oso_gsym_symbol->GetAddressRef().GetFileAddress(), 160 std::min<addr_t>(exe_symbol->GetByteSize(), oso_gsym_symbol->GetByteSize())); 161 } 162 } 163 break; 164 } 165 } 166 } 167 168 exe_symfile->FinalizeOSOFileRanges (this); 169 // We don't need the symbols anymore for the .o files 170 oso_objfile->ClearSymtab(); 171 } 172 } 173 return file_range_map; 174 } 175 176 177 class DebugMapModule : public Module 178 { 179 public: 180 DebugMapModule (const ModuleSP &exe_module_sp, 181 uint32_t cu_idx, 182 const FileSpec& file_spec, 183 const ArchSpec& arch, 184 const ConstString *object_name, 185 off_t object_offset, 186 const TimeValue *object_mod_time_ptr) : 187 Module (file_spec, arch, object_name, object_offset, object_mod_time_ptr), 188 m_exe_module_wp (exe_module_sp), 189 m_cu_idx (cu_idx) 190 { 191 } 192 193 virtual 194 ~DebugMapModule () 195 { 196 } 197 198 199 virtual SymbolVendor* 200 GetSymbolVendor(bool can_create = true, lldb_private::Stream *feedback_strm = NULL) 201 { 202 // Scope for locker 203 if (m_symfile_ap.get() || can_create == false) 204 return m_symfile_ap.get(); 205 206 ModuleSP exe_module_sp (m_exe_module_wp.lock()); 207 if (exe_module_sp) 208 { 209 // Now get the object file outside of a locking scope 210 ObjectFile *oso_objfile = GetObjectFile (); 211 if (oso_objfile) 212 { 213 Mutex::Locker locker (m_mutex); 214 SymbolVendor* symbol_vendor = Module::GetSymbolVendor(can_create, feedback_strm); 215 if (symbol_vendor) 216 { 217 // Set a pointer to this class to set our OSO DWARF file know 218 // that the DWARF is being used along with a debug map and that 219 // it will have the remapped sections that we do below. 220 SymbolFileDWARF *oso_symfile = SymbolFileDWARFDebugMap::GetSymbolFileAsSymbolFileDWARF(symbol_vendor->GetSymbolFile()); 221 222 if (!oso_symfile) 223 return NULL; 224 225 ObjectFile *exe_objfile = exe_module_sp->GetObjectFile(); 226 SymbolVendor *exe_sym_vendor = exe_module_sp->GetSymbolVendor(); 227 228 if (exe_objfile && exe_sym_vendor) 229 { 230 oso_symfile->SetDebugMapModule(exe_module_sp); 231 // Set the ID of the symbol file DWARF to the index of the OSO 232 // shifted left by 32 bits to provide a unique prefix for any 233 // UserID's that get created in the symbol file. 234 oso_symfile->SetID (((uint64_t)m_cu_idx + 1ull) << 32ull); 235 } 236 return symbol_vendor; 237 } 238 } 239 } 240 return NULL; 241 } 242 243 protected: 244 ModuleWP m_exe_module_wp; 245 const uint32_t m_cu_idx; 246 }; 247 248 void 249 SymbolFileDWARFDebugMap::Initialize() 250 { 251 PluginManager::RegisterPlugin (GetPluginNameStatic(), 252 GetPluginDescriptionStatic(), 253 CreateInstance); 254 } 255 256 void 257 SymbolFileDWARFDebugMap::Terminate() 258 { 259 PluginManager::UnregisterPlugin (CreateInstance); 260 } 261 262 263 lldb_private::ConstString 264 SymbolFileDWARFDebugMap::GetPluginNameStatic() 265 { 266 static ConstString g_name("dwarf-debugmap"); 267 return g_name; 268 } 269 270 const char * 271 SymbolFileDWARFDebugMap::GetPluginDescriptionStatic() 272 { 273 return "DWARF and DWARF3 debug symbol file reader (debug map)."; 274 } 275 276 SymbolFile* 277 SymbolFileDWARFDebugMap::CreateInstance (ObjectFile* obj_file) 278 { 279 return new SymbolFileDWARFDebugMap (obj_file); 280 } 281 282 283 SymbolFileDWARFDebugMap::SymbolFileDWARFDebugMap (ObjectFile* ofile) : 284 SymbolFile(ofile), 285 m_flags(), 286 m_compile_unit_infos(), 287 m_func_indexes(), 288 m_glob_indexes(), 289 m_supports_DW_AT_APPLE_objc_complete_type (eLazyBoolCalculate) 290 { 291 } 292 293 294 SymbolFileDWARFDebugMap::~SymbolFileDWARFDebugMap() 295 { 296 } 297 298 void 299 SymbolFileDWARFDebugMap::InitializeObject() 300 { 301 // Install our external AST source callbacks so we can complete Clang types. 302 llvm::IntrusiveRefCntPtr<clang::ExternalASTSource> ast_source_ap ( 303 new ClangExternalASTSourceCallbacks (SymbolFileDWARFDebugMap::CompleteTagDecl, 304 SymbolFileDWARFDebugMap::CompleteObjCInterfaceDecl, 305 NULL, 306 SymbolFileDWARFDebugMap::LayoutRecordType, 307 this)); 308 309 GetClangASTContext().SetExternalSource (ast_source_ap); 310 } 311 312 void 313 SymbolFileDWARFDebugMap::InitOSO() 314 { 315 if (m_flags.test(kHaveInitializedOSOs)) 316 return; 317 318 m_flags.set(kHaveInitializedOSOs); 319 320 // If the object file has been stripped, there is no sense in looking further 321 // as all of the debug symbols for the debug map will not be available 322 if (m_obj_file->IsStripped()) 323 return; 324 325 // Also make sure the file type is some sort of executable. Core files, debug 326 // info files (dSYM), object files (.o files), and stub libraries all can 327 switch (m_obj_file->GetType()) 328 { 329 case ObjectFile::eTypeInvalid: 330 case ObjectFile::eTypeCoreFile: 331 case ObjectFile::eTypeDebugInfo: 332 case ObjectFile::eTypeObjectFile: 333 case ObjectFile::eTypeStubLibrary: 334 case ObjectFile::eTypeUnknown: 335 case ObjectFile::eTypeJIT: 336 return; 337 338 case ObjectFile::eTypeExecutable: 339 case ObjectFile::eTypeDynamicLinker: 340 case ObjectFile::eTypeSharedLibrary: 341 break; 342 } 343 344 // In order to get the abilities of this plug-in, we look at the list of 345 // N_OSO entries (object files) from the symbol table and make sure that 346 // these files exist and also contain valid DWARF. If we get any of that 347 // then we return the abilities of the first N_OSO's DWARF. 348 349 Symtab* symtab = m_obj_file->GetSymtab(); 350 if (symtab) 351 { 352 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_MAP)); 353 354 std::vector<uint32_t> oso_indexes; 355 // When a mach-o symbol is encoded, the n_type field is encoded in bits 356 // 23:16, and the n_desc field is encoded in bits 15:0. 357 // 358 // To find all N_OSO entries that are part of the DWARF + debug map 359 // we find only object file symbols with the flags value as follows: 360 // bits 23:16 == 0x66 (N_OSO) 361 // bits 15: 0 == 0x0001 (specifies this is a debug map object file) 362 const uint32_t k_oso_symbol_flags_value = 0x660001u; 363 364 const uint32_t oso_index_count = symtab->AppendSymbolIndexesWithTypeAndFlagsValue(eSymbolTypeObjectFile, k_oso_symbol_flags_value, oso_indexes); 365 366 if (oso_index_count > 0) 367 { 368 symtab->AppendSymbolIndexesWithType (eSymbolTypeCode, Symtab::eDebugYes, Symtab::eVisibilityAny, m_func_indexes); 369 symtab->AppendSymbolIndexesWithType (eSymbolTypeData, Symtab::eDebugYes, Symtab::eVisibilityAny, m_glob_indexes); 370 371 symtab->SortSymbolIndexesByValue(m_func_indexes, true); 372 symtab->SortSymbolIndexesByValue(m_glob_indexes, true); 373 374 for (uint32_t sym_idx : m_func_indexes) 375 { 376 const Symbol *symbol = symtab->SymbolAtIndex(sym_idx); 377 lldb::addr_t file_addr = symbol->GetAddressRef().GetFileAddress(); 378 lldb::addr_t byte_size = symbol->GetByteSize(); 379 DebugMap::Entry debug_map_entry(file_addr, byte_size, OSOEntry(sym_idx, LLDB_INVALID_ADDRESS)); 380 m_debug_map.Append(debug_map_entry); 381 } 382 for (uint32_t sym_idx : m_glob_indexes) 383 { 384 const Symbol *symbol = symtab->SymbolAtIndex(sym_idx); 385 lldb::addr_t file_addr = symbol->GetAddressRef().GetFileAddress(); 386 lldb::addr_t byte_size = symbol->GetByteSize(); 387 DebugMap::Entry debug_map_entry(file_addr, byte_size, OSOEntry(sym_idx, LLDB_INVALID_ADDRESS)); 388 m_debug_map.Append(debug_map_entry); 389 } 390 m_debug_map.Sort(); 391 392 m_compile_unit_infos.resize(oso_index_count); 393 394 for (uint32_t i=0; i<oso_index_count; ++i) 395 { 396 const uint32_t so_idx = oso_indexes[i] - 1; 397 const uint32_t oso_idx = oso_indexes[i]; 398 const Symbol *so_symbol = symtab->SymbolAtIndex(so_idx); 399 const Symbol *oso_symbol = symtab->SymbolAtIndex(oso_idx); 400 if (so_symbol && 401 oso_symbol && 402 so_symbol->GetType() == eSymbolTypeSourceFile && 403 oso_symbol->GetType() == eSymbolTypeObjectFile) 404 { 405 m_compile_unit_infos[i].so_file.SetFile(so_symbol->GetName().AsCString(), false); 406 m_compile_unit_infos[i].oso_path = oso_symbol->GetName(); 407 TimeValue oso_mod_time; 408 oso_mod_time.OffsetWithSeconds(oso_symbol->GetIntegerValue(0)); 409 m_compile_unit_infos[i].oso_mod_time = oso_mod_time; 410 uint32_t sibling_idx = so_symbol->GetSiblingIndex(); 411 // The sibling index can't be less that or equal to the current index "i" 412 if (sibling_idx == UINT32_MAX) 413 { 414 m_obj_file->GetModule()->ReportError ("N_SO in symbol with UID %u has invalid sibling in debug map, please file a bug and attach the binary listed in this error", so_symbol->GetID()); 415 } 416 else 417 { 418 const Symbol* last_symbol = symtab->SymbolAtIndex (sibling_idx - 1); 419 m_compile_unit_infos[i].first_symbol_index = so_idx; 420 m_compile_unit_infos[i].last_symbol_index = sibling_idx - 1; 421 m_compile_unit_infos[i].first_symbol_id = so_symbol->GetID(); 422 m_compile_unit_infos[i].last_symbol_id = last_symbol->GetID(); 423 424 if (log) 425 log->Printf("Initialized OSO 0x%8.8x: file=%s", i, oso_symbol->GetName().GetCString()); 426 } 427 } 428 else 429 { 430 if (oso_symbol == NULL) 431 m_obj_file->GetModule()->ReportError ("N_OSO symbol[%u] can't be found, please file a bug and attach the binary listed in this error", oso_idx); 432 else if (so_symbol == NULL) 433 m_obj_file->GetModule()->ReportError ("N_SO not found for N_OSO symbol[%u], please file a bug and attach the binary listed in this error", oso_idx); 434 else if (so_symbol->GetType() != eSymbolTypeSourceFile) 435 m_obj_file->GetModule()->ReportError ("N_SO has incorrect symbol type (%u) for N_OSO symbol[%u], please file a bug and attach the binary listed in this error", so_symbol->GetType(), oso_idx); 436 else if (oso_symbol->GetType() != eSymbolTypeSourceFile) 437 m_obj_file->GetModule()->ReportError ("N_OSO has incorrect symbol type (%u) for N_OSO symbol[%u], please file a bug and attach the binary listed in this error", oso_symbol->GetType(), oso_idx); 438 } 439 } 440 } 441 } 442 } 443 444 Module * 445 SymbolFileDWARFDebugMap::GetModuleByOSOIndex (uint32_t oso_idx) 446 { 447 const uint32_t cu_count = GetNumCompileUnits(); 448 if (oso_idx < cu_count) 449 return GetModuleByCompUnitInfo (&m_compile_unit_infos[oso_idx]); 450 return NULL; 451 } 452 453 Module * 454 SymbolFileDWARFDebugMap::GetModuleByCompUnitInfo (CompileUnitInfo *comp_unit_info) 455 { 456 if (!comp_unit_info->oso_sp) 457 { 458 auto pos = m_oso_map.find (comp_unit_info->oso_path); 459 if (pos != m_oso_map.end()) 460 { 461 comp_unit_info->oso_sp = pos->second; 462 } 463 else 464 { 465 ObjectFile *obj_file = GetObjectFile(); 466 comp_unit_info->oso_sp.reset (new OSOInfo()); 467 m_oso_map[comp_unit_info->oso_path] = comp_unit_info->oso_sp; 468 const char *oso_path = comp_unit_info->oso_path.GetCString(); 469 FileSpec oso_file (oso_path, false); 470 ConstString oso_object; 471 if (oso_file.Exists()) 472 { 473 TimeValue oso_mod_time (oso_file.GetModificationTime()); 474 if (oso_mod_time != comp_unit_info->oso_mod_time) 475 { 476 obj_file->GetModule()->ReportError ("debug map object file '%s' has changed (actual time is 0x%" PRIx64 ", debug map time is 0x%" PRIx64 ") since this executable was linked, file will be ignored", 477 oso_file.GetPath().c_str(), 478 oso_mod_time.GetAsSecondsSinceJan1_1970(), 479 comp_unit_info->oso_mod_time.GetAsSecondsSinceJan1_1970()); 480 return NULL; 481 } 482 483 } 484 else 485 { 486 const bool must_exist = true; 487 488 if (!ObjectFile::SplitArchivePathWithObject (oso_path, 489 oso_file, 490 oso_object, 491 must_exist)) 492 { 493 return NULL; 494 } 495 } 496 // Always create a new module for .o files. Why? Because we 497 // use the debug map, to add new sections to each .o file and 498 // even though a .o file might not have changed, the sections 499 // that get added to the .o file can change. 500 ArchSpec oso_arch; 501 // Only adopt the architecture from the module (not the vendor or OS) 502 // since .o files for "i386-apple-ios" will historically show up as "i386-apple-macosx" 503 // due to the lack of a LC_VERSION_MIN_MACOSX or LC_VERSION_MIN_IPHONEOS 504 // load command... 505 oso_arch.SetTriple(m_obj_file->GetModule()->GetArchitecture().GetTriple().getArchName().str().c_str()); 506 comp_unit_info->oso_sp->module_sp.reset (new DebugMapModule (obj_file->GetModule(), 507 GetCompUnitInfoIndex(comp_unit_info), 508 oso_file, 509 oso_arch, 510 oso_object ? &oso_object : NULL, 511 0, 512 oso_object ? &comp_unit_info->oso_mod_time : NULL)); 513 } 514 } 515 if (comp_unit_info->oso_sp) 516 return comp_unit_info->oso_sp->module_sp.get(); 517 return NULL; 518 } 519 520 521 bool 522 SymbolFileDWARFDebugMap::GetFileSpecForSO (uint32_t oso_idx, FileSpec &file_spec) 523 { 524 if (oso_idx < m_compile_unit_infos.size()) 525 { 526 if (m_compile_unit_infos[oso_idx].so_file) 527 { 528 file_spec = m_compile_unit_infos[oso_idx].so_file; 529 return true; 530 } 531 } 532 return false; 533 } 534 535 536 537 ObjectFile * 538 SymbolFileDWARFDebugMap::GetObjectFileByOSOIndex (uint32_t oso_idx) 539 { 540 Module *oso_module = GetModuleByOSOIndex (oso_idx); 541 if (oso_module) 542 return oso_module->GetObjectFile(); 543 return NULL; 544 } 545 546 SymbolFileDWARF * 547 SymbolFileDWARFDebugMap::GetSymbolFile (const SymbolContext& sc) 548 { 549 CompileUnitInfo *comp_unit_info = GetCompUnitInfo (sc); 550 if (comp_unit_info) 551 return GetSymbolFileByCompUnitInfo (comp_unit_info); 552 return NULL; 553 } 554 555 ObjectFile * 556 SymbolFileDWARFDebugMap::GetObjectFileByCompUnitInfo (CompileUnitInfo *comp_unit_info) 557 { 558 Module *oso_module = GetModuleByCompUnitInfo (comp_unit_info); 559 if (oso_module) 560 return oso_module->GetObjectFile(); 561 return NULL; 562 } 563 564 565 uint32_t 566 SymbolFileDWARFDebugMap::GetCompUnitInfoIndex (const CompileUnitInfo *comp_unit_info) 567 { 568 if (!m_compile_unit_infos.empty()) 569 { 570 const CompileUnitInfo *first_comp_unit_info = &m_compile_unit_infos.front(); 571 const CompileUnitInfo *last_comp_unit_info = &m_compile_unit_infos.back(); 572 if (first_comp_unit_info <= comp_unit_info && comp_unit_info <= last_comp_unit_info) 573 return comp_unit_info - first_comp_unit_info; 574 } 575 return UINT32_MAX; 576 } 577 578 SymbolFileDWARF * 579 SymbolFileDWARFDebugMap::GetSymbolFileByOSOIndex (uint32_t oso_idx) 580 { 581 if (oso_idx < m_compile_unit_infos.size()) 582 return GetSymbolFileByCompUnitInfo (&m_compile_unit_infos[oso_idx]); 583 return NULL; 584 } 585 586 SymbolFileDWARF * 587 SymbolFileDWARFDebugMap::GetSymbolFileAsSymbolFileDWARF (SymbolFile *sym_file) 588 { 589 if (sym_file && sym_file->GetPluginName() == SymbolFileDWARF::GetPluginNameStatic()) 590 return (SymbolFileDWARF *)sym_file; 591 return NULL; 592 } 593 594 SymbolFileDWARF * 595 SymbolFileDWARFDebugMap::GetSymbolFileByCompUnitInfo (CompileUnitInfo *comp_unit_info) 596 { 597 Module *oso_module = GetModuleByCompUnitInfo (comp_unit_info); 598 if (oso_module) 599 { 600 SymbolVendor *sym_vendor = oso_module->GetSymbolVendor(); 601 if (sym_vendor) 602 return GetSymbolFileAsSymbolFileDWARF (sym_vendor->GetSymbolFile()); 603 } 604 return NULL; 605 } 606 607 uint32_t 608 SymbolFileDWARFDebugMap::CalculateAbilities () 609 { 610 // In order to get the abilities of this plug-in, we look at the list of 611 // N_OSO entries (object files) from the symbol table and make sure that 612 // these files exist and also contain valid DWARF. If we get any of that 613 // then we return the abilities of the first N_OSO's DWARF. 614 615 const uint32_t oso_index_count = GetNumCompileUnits(); 616 if (oso_index_count > 0) 617 { 618 InitOSO(); 619 if (!m_compile_unit_infos.empty()) 620 { 621 return SymbolFile::CompileUnits | 622 SymbolFile::Functions | 623 SymbolFile::Blocks | 624 SymbolFile::GlobalVariables | 625 SymbolFile::LocalVariables | 626 SymbolFile::VariableTypes | 627 SymbolFile::LineTables ; 628 } 629 } 630 return 0; 631 } 632 633 uint32_t 634 SymbolFileDWARFDebugMap::GetNumCompileUnits() 635 { 636 InitOSO (); 637 return m_compile_unit_infos.size(); 638 } 639 640 641 CompUnitSP 642 SymbolFileDWARFDebugMap::ParseCompileUnitAtIndex(uint32_t cu_idx) 643 { 644 CompUnitSP comp_unit_sp; 645 const uint32_t cu_count = GetNumCompileUnits(); 646 647 if (cu_idx < cu_count) 648 { 649 Module *oso_module = GetModuleByCompUnitInfo (&m_compile_unit_infos[cu_idx]); 650 if (oso_module) 651 { 652 FileSpec so_file_spec; 653 if (GetFileSpecForSO (cu_idx, so_file_spec)) 654 { 655 // User zero as the ID to match the compile unit at offset 656 // zero in each .o file since each .o file can only have 657 // one compile unit for now. 658 lldb::user_id_t cu_id = 0; 659 m_compile_unit_infos[cu_idx].compile_unit_sp.reset(new CompileUnit (m_obj_file->GetModule(), 660 NULL, 661 so_file_spec, 662 cu_id, 663 eLanguageTypeUnknown, 664 false)); 665 666 if (m_compile_unit_infos[cu_idx].compile_unit_sp) 667 { 668 // Let our symbol vendor know about this compile unit 669 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex (cu_idx, m_compile_unit_infos[cu_idx].compile_unit_sp); 670 } 671 } 672 } 673 comp_unit_sp = m_compile_unit_infos[cu_idx].compile_unit_sp; 674 } 675 676 return comp_unit_sp; 677 } 678 679 SymbolFileDWARFDebugMap::CompileUnitInfo * 680 SymbolFileDWARFDebugMap::GetCompUnitInfo (const SymbolContext& sc) 681 { 682 const uint32_t cu_count = GetNumCompileUnits(); 683 for (uint32_t i=0; i<cu_count; ++i) 684 { 685 if (sc.comp_unit == m_compile_unit_infos[i].compile_unit_sp.get()) 686 return &m_compile_unit_infos[i]; 687 } 688 return NULL; 689 } 690 691 692 size_t 693 SymbolFileDWARFDebugMap::GetCompUnitInfosForModule (const lldb_private::Module *module, std::vector<CompileUnitInfo *>& cu_infos) 694 { 695 const uint32_t cu_count = GetNumCompileUnits(); 696 for (uint32_t i=0; i<cu_count; ++i) 697 { 698 if (module == GetModuleByCompUnitInfo (&m_compile_unit_infos[i])) 699 cu_infos.push_back (&m_compile_unit_infos[i]); 700 } 701 return cu_infos.size(); 702 } 703 704 lldb::LanguageType 705 SymbolFileDWARFDebugMap::ParseCompileUnitLanguage (const SymbolContext& sc) 706 { 707 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 708 if (oso_dwarf) 709 return oso_dwarf->ParseCompileUnitLanguage (sc); 710 return eLanguageTypeUnknown; 711 } 712 713 size_t 714 SymbolFileDWARFDebugMap::ParseCompileUnitFunctions (const SymbolContext& sc) 715 { 716 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 717 if (oso_dwarf) 718 return oso_dwarf->ParseCompileUnitFunctions (sc); 719 return 0; 720 } 721 722 bool 723 SymbolFileDWARFDebugMap::ParseCompileUnitLineTable (const SymbolContext& sc) 724 { 725 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 726 if (oso_dwarf) 727 return oso_dwarf->ParseCompileUnitLineTable (sc); 728 return false; 729 } 730 731 bool 732 SymbolFileDWARFDebugMap::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList &support_files) 733 { 734 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 735 if (oso_dwarf) 736 return oso_dwarf->ParseCompileUnitSupportFiles (sc, support_files); 737 return false; 738 } 739 740 bool 741 SymbolFileDWARFDebugMap::ParseImportedModules (const SymbolContext &sc, std::vector<ConstString> &imported_modules) 742 { 743 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 744 if (oso_dwarf) 745 return oso_dwarf->ParseImportedModules(sc, imported_modules); 746 return false; 747 } 748 749 size_t 750 SymbolFileDWARFDebugMap::ParseFunctionBlocks (const SymbolContext& sc) 751 { 752 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 753 if (oso_dwarf) 754 return oso_dwarf->ParseFunctionBlocks (sc); 755 return 0; 756 } 757 758 759 size_t 760 SymbolFileDWARFDebugMap::ParseTypes (const SymbolContext& sc) 761 { 762 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 763 if (oso_dwarf) 764 return oso_dwarf->ParseTypes (sc); 765 return 0; 766 } 767 768 769 size_t 770 SymbolFileDWARFDebugMap::ParseVariablesForContext (const SymbolContext& sc) 771 { 772 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 773 if (oso_dwarf) 774 return oso_dwarf->ParseVariablesForContext (sc); 775 return 0; 776 } 777 778 779 780 Type* 781 SymbolFileDWARFDebugMap::ResolveTypeUID(lldb::user_id_t type_uid) 782 { 783 const uint64_t oso_idx = GetOSOIndexFromUserID (type_uid); 784 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 785 if (oso_dwarf) 786 return oso_dwarf->ResolveTypeUID (type_uid); 787 return NULL; 788 } 789 790 bool 791 SymbolFileDWARFDebugMap::ResolveClangOpaqueTypeDefinition (CompilerType& clang_type) 792 { 793 // We have a struct/union/class/enum that needs to be fully resolved. 794 return false; 795 } 796 797 uint32_t 798 SymbolFileDWARFDebugMap::ResolveSymbolContext (const Address& exe_so_addr, uint32_t resolve_scope, SymbolContext& sc) 799 { 800 uint32_t resolved_flags = 0; 801 Symtab* symtab = m_obj_file->GetSymtab(); 802 if (symtab) 803 { 804 const addr_t exe_file_addr = exe_so_addr.GetFileAddress(); 805 806 const DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains (exe_file_addr); 807 if (debug_map_entry) 808 { 809 810 sc.symbol = symtab->SymbolAtIndex(debug_map_entry->data.GetExeSymbolIndex()); 811 812 if (sc.symbol != NULL) 813 { 814 resolved_flags |= eSymbolContextSymbol; 815 816 uint32_t oso_idx = 0; 817 CompileUnitInfo* comp_unit_info = GetCompileUnitInfoForSymbolWithID (sc.symbol->GetID(), &oso_idx); 818 if (comp_unit_info) 819 { 820 comp_unit_info->GetFileRangeMap(this); 821 Module *oso_module = GetModuleByCompUnitInfo (comp_unit_info); 822 if (oso_module) 823 { 824 lldb::addr_t oso_file_addr = exe_file_addr - debug_map_entry->GetRangeBase() + debug_map_entry->data.GetOSOFileAddress(); 825 Address oso_so_addr; 826 if (oso_module->ResolveFileAddress(oso_file_addr, oso_so_addr)) 827 { 828 resolved_flags |= oso_module->GetSymbolVendor()->ResolveSymbolContext (oso_so_addr, resolve_scope, sc); 829 } 830 } 831 } 832 } 833 } 834 } 835 return resolved_flags; 836 } 837 838 839 uint32_t 840 SymbolFileDWARFDebugMap::ResolveSymbolContext (const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list) 841 { 842 const uint32_t initial = sc_list.GetSize(); 843 const uint32_t cu_count = GetNumCompileUnits(); 844 845 for (uint32_t i=0; i<cu_count; ++i) 846 { 847 // If we are checking for inlines, then we need to look through all 848 // compile units no matter if "file_spec" matches. 849 bool resolve = check_inlines; 850 851 if (!resolve) 852 { 853 FileSpec so_file_spec; 854 if (GetFileSpecForSO (i, so_file_spec)) 855 { 856 // Match the full path if the incoming file_spec has a directory (not just a basename) 857 const bool full_match = (bool)file_spec.GetDirectory(); 858 resolve = FileSpec::Equal (file_spec, so_file_spec, full_match); 859 } 860 } 861 if (resolve) 862 { 863 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (i); 864 if (oso_dwarf) 865 oso_dwarf->ResolveSymbolContext(file_spec, line, check_inlines, resolve_scope, sc_list); 866 } 867 } 868 return sc_list.GetSize() - initial; 869 } 870 871 uint32_t 872 SymbolFileDWARFDebugMap::PrivateFindGlobalVariables 873 ( 874 const ConstString &name, 875 const ClangNamespaceDecl *namespace_decl, 876 const std::vector<uint32_t> &indexes, // Indexes into the symbol table that match "name" 877 uint32_t max_matches, 878 VariableList& variables 879 ) 880 { 881 const uint32_t original_size = variables.GetSize(); 882 const size_t match_count = indexes.size(); 883 for (size_t i=0; i<match_count; ++i) 884 { 885 uint32_t oso_idx; 886 CompileUnitInfo* comp_unit_info = GetCompileUnitInfoForSymbolWithIndex (indexes[i], &oso_idx); 887 if (comp_unit_info) 888 { 889 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 890 if (oso_dwarf) 891 { 892 if (oso_dwarf->FindGlobalVariables(name, namespace_decl, true, max_matches, variables)) 893 if (variables.GetSize() > max_matches) 894 break; 895 } 896 } 897 } 898 return variables.GetSize() - original_size; 899 } 900 901 uint32_t 902 SymbolFileDWARFDebugMap::FindGlobalVariables (const ConstString &name, const ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables) 903 { 904 905 // If we aren't appending the results to this list, then clear the list 906 if (!append) 907 variables.Clear(); 908 909 // Remember how many variables are in the list before we search in case 910 // we are appending the results to a variable list. 911 const uint32_t original_size = variables.GetSize(); 912 913 uint32_t total_matches = 0; 914 915 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 916 const uint32_t oso_matches = oso_dwarf->FindGlobalVariables (name, 917 namespace_decl, 918 true, 919 max_matches, 920 variables); 921 if (oso_matches > 0) 922 { 923 total_matches += oso_matches; 924 925 // Are we getting all matches? 926 if (max_matches == UINT32_MAX) 927 return false; // Yep, continue getting everything 928 929 // If we have found enough matches, lets get out 930 if (max_matches >= total_matches) 931 return true; 932 933 // Update the max matches for any subsequent calls to find globals 934 // in any other object files with DWARF 935 max_matches -= oso_matches; 936 } 937 938 return false; 939 }); 940 941 // Return the number of variable that were appended to the list 942 return variables.GetSize() - original_size; 943 } 944 945 946 uint32_t 947 SymbolFileDWARFDebugMap::FindGlobalVariables (const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables) 948 { 949 // If we aren't appending the results to this list, then clear the list 950 if (!append) 951 variables.Clear(); 952 953 // Remember how many variables are in the list before we search in case 954 // we are appending the results to a variable list. 955 const uint32_t original_size = variables.GetSize(); 956 957 uint32_t total_matches = 0; 958 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 959 const uint32_t oso_matches = oso_dwarf->FindGlobalVariables (regex, 960 true, 961 max_matches, 962 variables); 963 if (oso_matches > 0) 964 { 965 total_matches += oso_matches; 966 967 // Are we getting all matches? 968 if (max_matches == UINT32_MAX) 969 return false; // Yep, continue getting everything 970 971 // If we have found enough matches, lets get out 972 if (max_matches >= total_matches) 973 return true; 974 975 // Update the max matches for any subsequent calls to find globals 976 // in any other object files with DWARF 977 max_matches -= oso_matches; 978 } 979 980 return false; 981 }); 982 983 // Return the number of variable that were appended to the list 984 return variables.GetSize() - original_size; 985 } 986 987 988 int 989 SymbolFileDWARFDebugMap::SymbolContainsSymbolWithIndex (uint32_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info) 990 { 991 const uint32_t symbol_idx = *symbol_idx_ptr; 992 993 if (symbol_idx < comp_unit_info->first_symbol_index) 994 return -1; 995 996 if (symbol_idx <= comp_unit_info->last_symbol_index) 997 return 0; 998 999 return 1; 1000 } 1001 1002 1003 int 1004 SymbolFileDWARFDebugMap::SymbolContainsSymbolWithID (user_id_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info) 1005 { 1006 const user_id_t symbol_id = *symbol_idx_ptr; 1007 1008 if (symbol_id < comp_unit_info->first_symbol_id) 1009 return -1; 1010 1011 if (symbol_id <= comp_unit_info->last_symbol_id) 1012 return 0; 1013 1014 return 1; 1015 } 1016 1017 1018 SymbolFileDWARFDebugMap::CompileUnitInfo* 1019 SymbolFileDWARFDebugMap::GetCompileUnitInfoForSymbolWithIndex (uint32_t symbol_idx, uint32_t *oso_idx_ptr) 1020 { 1021 const uint32_t oso_index_count = m_compile_unit_infos.size(); 1022 CompileUnitInfo *comp_unit_info = NULL; 1023 if (oso_index_count) 1024 { 1025 comp_unit_info = (CompileUnitInfo*)bsearch(&symbol_idx, 1026 &m_compile_unit_infos[0], 1027 m_compile_unit_infos.size(), 1028 sizeof(CompileUnitInfo), 1029 (ComparisonFunction)SymbolContainsSymbolWithIndex); 1030 } 1031 1032 if (oso_idx_ptr) 1033 { 1034 if (comp_unit_info != NULL) 1035 *oso_idx_ptr = comp_unit_info - &m_compile_unit_infos[0]; 1036 else 1037 *oso_idx_ptr = UINT32_MAX; 1038 } 1039 return comp_unit_info; 1040 } 1041 1042 SymbolFileDWARFDebugMap::CompileUnitInfo* 1043 SymbolFileDWARFDebugMap::GetCompileUnitInfoForSymbolWithID (user_id_t symbol_id, uint32_t *oso_idx_ptr) 1044 { 1045 const uint32_t oso_index_count = m_compile_unit_infos.size(); 1046 CompileUnitInfo *comp_unit_info = NULL; 1047 if (oso_index_count) 1048 { 1049 comp_unit_info = (CompileUnitInfo*)::bsearch (&symbol_id, 1050 &m_compile_unit_infos[0], 1051 m_compile_unit_infos.size(), 1052 sizeof(CompileUnitInfo), 1053 (ComparisonFunction)SymbolContainsSymbolWithID); 1054 } 1055 1056 if (oso_idx_ptr) 1057 { 1058 if (comp_unit_info != NULL) 1059 *oso_idx_ptr = comp_unit_info - &m_compile_unit_infos[0]; 1060 else 1061 *oso_idx_ptr = UINT32_MAX; 1062 } 1063 return comp_unit_info; 1064 } 1065 1066 1067 static void 1068 RemoveFunctionsWithModuleNotEqualTo (const ModuleSP &module_sp, SymbolContextList &sc_list, uint32_t start_idx) 1069 { 1070 // We found functions in .o files. Not all functions in the .o files 1071 // will have made it into the final output file. The ones that did 1072 // make it into the final output file will have a section whose module 1073 // matches the module from the ObjectFile for this SymbolFile. When 1074 // the modules don't match, then we have something that was in a 1075 // .o file, but doesn't map to anything in the final executable. 1076 uint32_t i=start_idx; 1077 while (i < sc_list.GetSize()) 1078 { 1079 SymbolContext sc; 1080 sc_list.GetContextAtIndex(i, sc); 1081 if (sc.function) 1082 { 1083 const SectionSP section_sp (sc.function->GetAddressRange().GetBaseAddress().GetSection()); 1084 if (section_sp->GetModule() != module_sp) 1085 { 1086 sc_list.RemoveContextAtIndex(i); 1087 continue; 1088 } 1089 } 1090 ++i; 1091 } 1092 } 1093 1094 uint32_t 1095 SymbolFileDWARFDebugMap::FindFunctions(const ConstString &name, const ClangNamespaceDecl *namespace_decl, uint32_t name_type_mask, bool include_inlines, bool append, SymbolContextList& sc_list) 1096 { 1097 Timer scoped_timer (__PRETTY_FUNCTION__, 1098 "SymbolFileDWARFDebugMap::FindFunctions (name = %s)", 1099 name.GetCString()); 1100 1101 uint32_t initial_size = 0; 1102 if (append) 1103 initial_size = sc_list.GetSize(); 1104 else 1105 sc_list.Clear(); 1106 1107 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1108 uint32_t sc_idx = sc_list.GetSize(); 1109 if (oso_dwarf->FindFunctions(name, namespace_decl, name_type_mask, include_inlines, true, sc_list)) 1110 { 1111 RemoveFunctionsWithModuleNotEqualTo (m_obj_file->GetModule(), sc_list, sc_idx); 1112 } 1113 return false; 1114 }); 1115 1116 return sc_list.GetSize() - initial_size; 1117 } 1118 1119 1120 uint32_t 1121 SymbolFileDWARFDebugMap::FindFunctions (const RegularExpression& regex, bool include_inlines, bool append, SymbolContextList& sc_list) 1122 { 1123 Timer scoped_timer (__PRETTY_FUNCTION__, 1124 "SymbolFileDWARFDebugMap::FindFunctions (regex = '%s')", 1125 regex.GetText()); 1126 1127 uint32_t initial_size = 0; 1128 if (append) 1129 initial_size = sc_list.GetSize(); 1130 else 1131 sc_list.Clear(); 1132 1133 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1134 uint32_t sc_idx = sc_list.GetSize(); 1135 1136 if (oso_dwarf->FindFunctions(regex, include_inlines, true, sc_list)) 1137 { 1138 RemoveFunctionsWithModuleNotEqualTo (m_obj_file->GetModule(), sc_list, sc_idx); 1139 } 1140 return false; 1141 }); 1142 1143 return sc_list.GetSize() - initial_size; 1144 } 1145 1146 size_t 1147 SymbolFileDWARFDebugMap::GetTypes (SymbolContextScope *sc_scope, 1148 uint32_t type_mask, 1149 TypeList &type_list) 1150 { 1151 Timer scoped_timer (__PRETTY_FUNCTION__, 1152 "SymbolFileDWARFDebugMap::GetTypes (type_mask = 0x%8.8x)", 1153 type_mask); 1154 1155 1156 uint32_t initial_size = type_list.GetSize(); 1157 SymbolFileDWARF *oso_dwarf = NULL; 1158 if (sc_scope) 1159 { 1160 SymbolContext sc; 1161 sc_scope->CalculateSymbolContext(&sc); 1162 1163 CompileUnitInfo *cu_info = GetCompUnitInfo (sc); 1164 if (cu_info) 1165 { 1166 oso_dwarf = GetSymbolFileByCompUnitInfo (cu_info); 1167 if (oso_dwarf) 1168 oso_dwarf->GetTypes (sc_scope, type_mask, type_list); 1169 } 1170 } 1171 else 1172 { 1173 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1174 oso_dwarf->GetTypes (sc_scope, type_mask, type_list); 1175 return false; 1176 }); 1177 } 1178 return type_list.GetSize() - initial_size; 1179 } 1180 1181 1182 TypeSP 1183 SymbolFileDWARFDebugMap::FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &die_decl_ctx) 1184 { 1185 TypeSP type_sp; 1186 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1187 type_sp = oso_dwarf->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); 1188 return ((bool)type_sp); 1189 }); 1190 return type_sp; 1191 } 1192 1193 1194 1195 bool 1196 SymbolFileDWARFDebugMap::Supports_DW_AT_APPLE_objc_complete_type (SymbolFileDWARF *skip_dwarf_oso) 1197 { 1198 if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate) 1199 { 1200 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo; 1201 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1202 if (skip_dwarf_oso != oso_dwarf && oso_dwarf->Supports_DW_AT_APPLE_objc_complete_type(NULL)) 1203 { 1204 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; 1205 return true; 1206 } 1207 return false; 1208 }); 1209 } 1210 return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes; 1211 } 1212 1213 TypeSP 1214 SymbolFileDWARFDebugMap::FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die, 1215 const ConstString &type_name, 1216 bool must_be_implementation) 1217 { 1218 // If we have a debug map, we will have an Objective C symbol whose name is 1219 // the type name and whose type is eSymbolTypeObjCClass. If we can find that 1220 // symbol and find its containing parent, we can locate the .o file that will 1221 // contain the implementation definition since it will be scoped inside the N_SO 1222 // and we can then locate the SymbolFileDWARF that corresponds to that N_SO. 1223 SymbolFileDWARF *oso_dwarf = NULL; 1224 TypeSP type_sp; 1225 ObjectFile *module_objfile = m_obj_file->GetModule()->GetObjectFile(); 1226 if (module_objfile) 1227 { 1228 Symtab *symtab = module_objfile->GetSymtab(); 1229 if (symtab) 1230 { 1231 Symbol *objc_class_symbol = symtab->FindFirstSymbolWithNameAndType(type_name, eSymbolTypeObjCClass, Symtab::eDebugAny, Symtab::eVisibilityAny); 1232 if (objc_class_symbol) 1233 { 1234 // Get the N_SO symbol that contains the objective C class symbol as this 1235 // should be the .o file that contains the real definition... 1236 const Symbol *source_file_symbol = symtab->GetParent(objc_class_symbol); 1237 1238 if (source_file_symbol && source_file_symbol->GetType() == eSymbolTypeSourceFile) 1239 { 1240 const uint32_t source_file_symbol_idx = symtab->GetIndexForSymbol(source_file_symbol); 1241 if (source_file_symbol_idx != UINT32_MAX) 1242 { 1243 CompileUnitInfo *compile_unit_info = GetCompileUnitInfoForSymbolWithIndex (source_file_symbol_idx, NULL); 1244 if (compile_unit_info) 1245 { 1246 oso_dwarf = GetSymbolFileByCompUnitInfo (compile_unit_info); 1247 if (oso_dwarf) 1248 { 1249 TypeSP type_sp (oso_dwarf->FindCompleteObjCDefinitionTypeForDIE (die, type_name, must_be_implementation)); 1250 if (type_sp) 1251 { 1252 return type_sp; 1253 } 1254 } 1255 } 1256 } 1257 } 1258 } 1259 } 1260 } 1261 1262 // Only search all .o files for the definition if we don't need the implementation 1263 // because otherwise, with a valid debug map we should have the ObjC class symbol and 1264 // the code above should have found it. 1265 if (must_be_implementation == false) 1266 { 1267 TypeSP type_sp; 1268 1269 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1270 type_sp = oso_dwarf->FindCompleteObjCDefinitionTypeForDIE (die, type_name, must_be_implementation); 1271 return (bool)type_sp; 1272 }); 1273 1274 return type_sp; 1275 } 1276 return TypeSP(); 1277 } 1278 1279 uint32_t 1280 SymbolFileDWARFDebugMap::FindTypes 1281 ( 1282 const SymbolContext& sc, 1283 const ConstString &name, 1284 const ClangNamespaceDecl *namespace_decl, 1285 bool append, 1286 uint32_t max_matches, 1287 TypeList& types 1288 ) 1289 { 1290 if (!append) 1291 types.Clear(); 1292 1293 const uint32_t initial_types_size = types.GetSize(); 1294 SymbolFileDWARF *oso_dwarf; 1295 1296 if (sc.comp_unit) 1297 { 1298 oso_dwarf = GetSymbolFile (sc); 1299 if (oso_dwarf) 1300 return oso_dwarf->FindTypes (sc, name, namespace_decl, append, max_matches, types); 1301 } 1302 else 1303 { 1304 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1305 oso_dwarf->FindTypes (sc, name, namespace_decl, append, max_matches, types); 1306 return false; 1307 }); 1308 } 1309 1310 return types.GetSize() - initial_types_size; 1311 } 1312 1313 // 1314 //uint32_t 1315 //SymbolFileDWARFDebugMap::FindTypes (const SymbolContext& sc, const RegularExpression& regex, bool append, uint32_t max_matches, Type::Encoding encoding, lldb::user_id_t udt_uid, TypeList& types) 1316 //{ 1317 // SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 1318 // if (oso_dwarf) 1319 // return oso_dwarf->FindTypes (sc, regex, append, max_matches, encoding, udt_uid, types); 1320 // return 0; 1321 //} 1322 1323 1324 ClangNamespaceDecl 1325 SymbolFileDWARFDebugMap::FindNamespace (const lldb_private::SymbolContext& sc, 1326 const lldb_private::ConstString &name, 1327 const ClangNamespaceDecl *parent_namespace_decl) 1328 { 1329 ClangNamespaceDecl matching_namespace; 1330 SymbolFileDWARF *oso_dwarf; 1331 1332 if (sc.comp_unit) 1333 { 1334 oso_dwarf = GetSymbolFile (sc); 1335 if (oso_dwarf) 1336 matching_namespace = oso_dwarf->FindNamespace (sc, name, parent_namespace_decl); 1337 } 1338 else 1339 { 1340 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1341 matching_namespace = oso_dwarf->FindNamespace (sc, name, parent_namespace_decl); 1342 1343 return (bool)matching_namespace; 1344 }); 1345 } 1346 1347 return matching_namespace; 1348 } 1349 1350 //------------------------------------------------------------------ 1351 // PluginInterface protocol 1352 //------------------------------------------------------------------ 1353 lldb_private::ConstString 1354 SymbolFileDWARFDebugMap::GetPluginName() 1355 { 1356 return GetPluginNameStatic(); 1357 } 1358 1359 uint32_t 1360 SymbolFileDWARFDebugMap::GetPluginVersion() 1361 { 1362 return 1; 1363 } 1364 1365 lldb::CompUnitSP 1366 SymbolFileDWARFDebugMap::GetCompileUnit (SymbolFileDWARF *oso_dwarf) 1367 { 1368 if (oso_dwarf) 1369 { 1370 const uint32_t cu_count = GetNumCompileUnits(); 1371 for (uint32_t cu_idx=0; cu_idx<cu_count; ++cu_idx) 1372 { 1373 SymbolFileDWARF *oso_symfile = GetSymbolFileByCompUnitInfo (&m_compile_unit_infos[cu_idx]); 1374 if (oso_symfile == oso_dwarf) 1375 { 1376 if (!m_compile_unit_infos[cu_idx].compile_unit_sp) 1377 m_compile_unit_infos[cu_idx].compile_unit_sp = ParseCompileUnitAtIndex (cu_idx); 1378 1379 return m_compile_unit_infos[cu_idx].compile_unit_sp; 1380 } 1381 } 1382 } 1383 assert(!"this shouldn't happen"); 1384 return lldb::CompUnitSP(); 1385 } 1386 1387 SymbolFileDWARFDebugMap::CompileUnitInfo * 1388 SymbolFileDWARFDebugMap::GetCompileUnitInfo (SymbolFileDWARF *oso_dwarf) 1389 { 1390 if (oso_dwarf) 1391 { 1392 const uint32_t cu_count = GetNumCompileUnits(); 1393 for (uint32_t cu_idx=0; cu_idx<cu_count; ++cu_idx) 1394 { 1395 SymbolFileDWARF *oso_symfile = GetSymbolFileByCompUnitInfo (&m_compile_unit_infos[cu_idx]); 1396 if (oso_symfile == oso_dwarf) 1397 { 1398 return &m_compile_unit_infos[cu_idx]; 1399 } 1400 } 1401 } 1402 return NULL; 1403 } 1404 1405 1406 void 1407 SymbolFileDWARFDebugMap::SetCompileUnit (SymbolFileDWARF *oso_dwarf, const CompUnitSP &cu_sp) 1408 { 1409 if (oso_dwarf) 1410 { 1411 const uint32_t cu_count = GetNumCompileUnits(); 1412 for (uint32_t cu_idx=0; cu_idx<cu_count; ++cu_idx) 1413 { 1414 SymbolFileDWARF *oso_symfile = GetSymbolFileByCompUnitInfo (&m_compile_unit_infos[cu_idx]); 1415 if (oso_symfile == oso_dwarf) 1416 { 1417 if (m_compile_unit_infos[cu_idx].compile_unit_sp) 1418 { 1419 assert (m_compile_unit_infos[cu_idx].compile_unit_sp.get() == cu_sp.get()); 1420 } 1421 else 1422 { 1423 m_compile_unit_infos[cu_idx].compile_unit_sp = cu_sp; 1424 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp); 1425 } 1426 } 1427 } 1428 } 1429 } 1430 1431 1432 void 1433 SymbolFileDWARFDebugMap::CompleteTagDecl (void *baton, clang::TagDecl *decl) 1434 { 1435 SymbolFileDWARFDebugMap *symbol_file_dwarf = (SymbolFileDWARFDebugMap *)baton; 1436 CompilerType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); 1437 if (clang_type) 1438 { 1439 symbol_file_dwarf->ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1440 if (oso_dwarf->HasForwardDeclForClangType (clang_type)) 1441 { 1442 oso_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); 1443 return true; 1444 } 1445 return false; 1446 }); 1447 } 1448 } 1449 1450 void 1451 SymbolFileDWARFDebugMap::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *decl) 1452 { 1453 SymbolFileDWARFDebugMap *symbol_file_dwarf = (SymbolFileDWARFDebugMap *)baton; 1454 CompilerType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); 1455 if (clang_type) 1456 { 1457 symbol_file_dwarf->ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1458 if (oso_dwarf->HasForwardDeclForClangType (clang_type)) 1459 { 1460 oso_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); 1461 return true; 1462 } 1463 return false; 1464 }); 1465 } 1466 } 1467 1468 bool 1469 SymbolFileDWARFDebugMap::LayoutRecordType(void *baton, const clang::RecordDecl *record_decl, uint64_t &size, 1470 uint64_t &alignment, 1471 llvm::DenseMap<const clang::FieldDecl *, uint64_t> &field_offsets, 1472 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets, 1473 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets) 1474 { 1475 SymbolFileDWARFDebugMap *symbol_file_dwarf = (SymbolFileDWARFDebugMap *)baton; 1476 bool laid_out = false; 1477 symbol_file_dwarf->ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1478 return (laid_out = oso_dwarf->LayoutRecordType (record_decl, size, alignment, field_offsets, base_offsets, vbase_offsets)); 1479 }); 1480 return laid_out; 1481 } 1482 1483 1484 1485 clang::DeclContext* 1486 SymbolFileDWARFDebugMap::GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid) 1487 { 1488 const uint64_t oso_idx = GetOSOIndexFromUserID (type_uid); 1489 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 1490 if (oso_dwarf) 1491 return oso_dwarf->GetClangDeclContextContainingTypeUID (type_uid); 1492 return NULL; 1493 } 1494 1495 clang::DeclContext* 1496 SymbolFileDWARFDebugMap::GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid) 1497 { 1498 const uint64_t oso_idx = GetOSOIndexFromUserID (type_uid); 1499 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 1500 if (oso_dwarf) 1501 return oso_dwarf->GetClangDeclContextForTypeUID (sc, type_uid); 1502 return NULL; 1503 } 1504 1505 bool 1506 SymbolFileDWARFDebugMap::AddOSOFileRange (CompileUnitInfo *cu_info, 1507 lldb::addr_t exe_file_addr, 1508 lldb::addr_t oso_file_addr, 1509 lldb::addr_t oso_byte_size) 1510 { 1511 const uint32_t debug_map_idx = m_debug_map.FindEntryIndexThatContains(exe_file_addr); 1512 if (debug_map_idx != UINT32_MAX) 1513 { 1514 DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains(exe_file_addr); 1515 debug_map_entry->data.SetOSOFileAddress(oso_file_addr); 1516 cu_info->file_range_map.Append(FileRangeMap::Entry(oso_file_addr, oso_byte_size, exe_file_addr)); 1517 return true; 1518 } 1519 return false; 1520 } 1521 1522 void 1523 SymbolFileDWARFDebugMap::FinalizeOSOFileRanges (CompileUnitInfo *cu_info) 1524 { 1525 cu_info->file_range_map.Sort(); 1526 #if defined(DEBUG_OSO_DMAP) 1527 const FileRangeMap &oso_file_range_map = cu_info->GetFileRangeMap(this); 1528 const size_t n = oso_file_range_map.GetSize(); 1529 printf ("SymbolFileDWARFDebugMap::FinalizeOSOFileRanges (cu_info = %p) %s\n", 1530 cu_info, 1531 cu_info->oso_sp->module_sp->GetFileSpec().GetPath().c_str()); 1532 for (size_t i=0; i<n; ++i) 1533 { 1534 const FileRangeMap::Entry &entry = oso_file_range_map.GetEntryRef(i); 1535 printf ("oso [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ") ==> exe [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ")\n", 1536 entry.GetRangeBase(), entry.GetRangeEnd(), 1537 entry.data, entry.data + entry.GetByteSize()); 1538 } 1539 #endif 1540 } 1541 1542 lldb::addr_t 1543 SymbolFileDWARFDebugMap::LinkOSOFileAddress (SymbolFileDWARF *oso_symfile, lldb::addr_t oso_file_addr) 1544 { 1545 CompileUnitInfo *cu_info = GetCompileUnitInfo (oso_symfile); 1546 if (cu_info) 1547 { 1548 const FileRangeMap::Entry *oso_range_entry = cu_info->GetFileRangeMap(this).FindEntryThatContains(oso_file_addr); 1549 if (oso_range_entry) 1550 { 1551 const DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains(oso_range_entry->data); 1552 if (debug_map_entry) 1553 { 1554 const lldb::addr_t offset = oso_file_addr - oso_range_entry->GetRangeBase(); 1555 const lldb::addr_t exe_file_addr = debug_map_entry->GetRangeBase() + offset; 1556 return exe_file_addr; 1557 } 1558 } 1559 } 1560 return LLDB_INVALID_ADDRESS; 1561 } 1562 1563 bool 1564 SymbolFileDWARFDebugMap::LinkOSOAddress (Address &addr) 1565 { 1566 // Make sure this address hasn't been fixed already 1567 Module *exe_module = GetObjectFile()->GetModule().get(); 1568 Module *addr_module = addr.GetModule().get(); 1569 if (addr_module == exe_module) 1570 return true; // Address is already in terms of the main executable module 1571 1572 CompileUnitInfo *cu_info = GetCompileUnitInfo (GetSymbolFileAsSymbolFileDWARF(addr_module->GetSymbolVendor()->GetSymbolFile())); 1573 if (cu_info) 1574 { 1575 const lldb::addr_t oso_file_addr = addr.GetFileAddress(); 1576 const FileRangeMap::Entry *oso_range_entry = cu_info->GetFileRangeMap(this).FindEntryThatContains(oso_file_addr); 1577 if (oso_range_entry) 1578 { 1579 const DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains(oso_range_entry->data); 1580 if (debug_map_entry) 1581 { 1582 const lldb::addr_t offset = oso_file_addr - oso_range_entry->GetRangeBase(); 1583 const lldb::addr_t exe_file_addr = debug_map_entry->GetRangeBase() + offset; 1584 return exe_module->ResolveFileAddress(exe_file_addr, addr); 1585 } 1586 } 1587 } 1588 return true; 1589 } 1590 1591 LineTable * 1592 SymbolFileDWARFDebugMap::LinkOSOLineTable (SymbolFileDWARF *oso_dwarf, LineTable *line_table) 1593 { 1594 CompileUnitInfo *cu_info = GetCompileUnitInfo (oso_dwarf); 1595 if (cu_info) 1596 return line_table->LinkLineTable(cu_info->GetFileRangeMap(this)); 1597 return NULL; 1598 } 1599 1600 size_t 1601 SymbolFileDWARFDebugMap::AddOSOARanges (SymbolFileDWARF* dwarf2Data, DWARFDebugAranges* debug_aranges) 1602 { 1603 size_t num_line_entries_added = 0; 1604 if (debug_aranges && dwarf2Data) 1605 { 1606 CompileUnitInfo *compile_unit_info = GetCompileUnitInfo(dwarf2Data); 1607 if (compile_unit_info) 1608 { 1609 const FileRangeMap &file_range_map = compile_unit_info->GetFileRangeMap(this); 1610 for (size_t idx = 0; 1611 idx < file_range_map.GetSize(); 1612 idx++) 1613 { 1614 const FileRangeMap::Entry* entry = file_range_map.GetEntryAtIndex(idx); 1615 if (entry) 1616 { 1617 printf ("[0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ")\n", entry->GetRangeBase(), entry->GetRangeEnd()); 1618 debug_aranges->AppendRange(dwarf2Data->GetID(), entry->GetRangeBase(), entry->GetRangeEnd()); 1619 num_line_entries_added++; 1620 } 1621 } 1622 } 1623 } 1624 return num_line_entries_added; 1625 } 1626 1627