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(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->GetAddress().GetFileAddress(), 125 oso_fun_symbol->GetAddress().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(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->GetAddress().GetFileAddress(), 159 oso_gsym_symbol->GetAddress().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 if (oso_symfile->GetNumCompileUnits() == 1) 231 { 232 oso_symfile->SetDebugMapModule(exe_module_sp); 233 // Set the ID of the symbol file DWARF to the index of the OSO 234 // shifted left by 32 bits to provide a unique prefix for any 235 // UserID's that get created in the symbol file. 236 oso_symfile->SetID (((uint64_t)m_cu_idx + 1ull) << 32ull); 237 } 238 else 239 { 240 oso_symfile->SetID (UINT64_MAX); 241 } 242 } 243 return symbol_vendor; 244 } 245 } 246 } 247 return NULL; 248 } 249 250 protected: 251 ModuleWP m_exe_module_wp; 252 const uint32_t m_cu_idx; 253 }; 254 255 void 256 SymbolFileDWARFDebugMap::Initialize() 257 { 258 PluginManager::RegisterPlugin (GetPluginNameStatic(), 259 GetPluginDescriptionStatic(), 260 CreateInstance); 261 } 262 263 void 264 SymbolFileDWARFDebugMap::Terminate() 265 { 266 PluginManager::UnregisterPlugin (CreateInstance); 267 } 268 269 270 lldb_private::ConstString 271 SymbolFileDWARFDebugMap::GetPluginNameStatic() 272 { 273 static ConstString g_name("dwarf-debugmap"); 274 return g_name; 275 } 276 277 const char * 278 SymbolFileDWARFDebugMap::GetPluginDescriptionStatic() 279 { 280 return "DWARF and DWARF3 debug symbol file reader (debug map)."; 281 } 282 283 SymbolFile* 284 SymbolFileDWARFDebugMap::CreateInstance (ObjectFile* obj_file) 285 { 286 return new SymbolFileDWARFDebugMap (obj_file); 287 } 288 289 290 SymbolFileDWARFDebugMap::SymbolFileDWARFDebugMap (ObjectFile* ofile) : 291 SymbolFile(ofile), 292 m_flags(), 293 m_compile_unit_infos(), 294 m_func_indexes(), 295 m_glob_indexes(), 296 m_supports_DW_AT_APPLE_objc_complete_type (eLazyBoolCalculate) 297 { 298 } 299 300 301 SymbolFileDWARFDebugMap::~SymbolFileDWARFDebugMap() 302 { 303 } 304 305 void 306 SymbolFileDWARFDebugMap::InitializeObject() 307 { 308 // Install our external AST source callbacks so we can complete Clang types. 309 llvm::IntrusiveRefCntPtr<clang::ExternalASTSource> ast_source_ap ( 310 new ClangExternalASTSourceCallbacks (SymbolFileDWARFDebugMap::CompleteTagDecl, 311 SymbolFileDWARFDebugMap::CompleteObjCInterfaceDecl, 312 NULL, 313 SymbolFileDWARFDebugMap::LayoutRecordType, 314 this)); 315 316 GetClangASTContext().SetExternalSource (ast_source_ap); 317 } 318 319 void 320 SymbolFileDWARFDebugMap::InitOSO() 321 { 322 if (m_flags.test(kHaveInitializedOSOs)) 323 return; 324 325 m_flags.set(kHaveInitializedOSOs); 326 327 // If the object file has been stripped, there is no sense in looking further 328 // as all of the debug symbols for the debug map will not be available 329 if (m_obj_file->IsStripped()) 330 return; 331 332 // Also make sure the file type is some sort of executable. Core files, debug 333 // info files (dSYM), object files (.o files), and stub libraries all can 334 switch (m_obj_file->GetType()) 335 { 336 case ObjectFile::eTypeInvalid: 337 case ObjectFile::eTypeCoreFile: 338 case ObjectFile::eTypeDebugInfo: 339 case ObjectFile::eTypeObjectFile: 340 case ObjectFile::eTypeStubLibrary: 341 case ObjectFile::eTypeUnknown: 342 case ObjectFile::eTypeJIT: 343 return; 344 345 case ObjectFile::eTypeExecutable: 346 case ObjectFile::eTypeDynamicLinker: 347 case ObjectFile::eTypeSharedLibrary: 348 break; 349 } 350 351 // In order to get the abilities of this plug-in, we look at the list of 352 // N_OSO entries (object files) from the symbol table and make sure that 353 // these files exist and also contain valid DWARF. If we get any of that 354 // then we return the abilities of the first N_OSO's DWARF. 355 356 Symtab* symtab = m_obj_file->GetSymtab(); 357 if (symtab) 358 { 359 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_MAP)); 360 361 std::vector<uint32_t> oso_indexes; 362 // When a mach-o symbol is encoded, the n_type field is encoded in bits 363 // 23:16, and the n_desc field is encoded in bits 15:0. 364 // 365 // To find all N_OSO entries that are part of the DWARF + debug map 366 // we find only object file symbols with the flags value as follows: 367 // bits 23:16 == 0x66 (N_OSO) 368 // bits 15: 0 == 0x0001 (specifies this is a debug map object file) 369 const uint32_t k_oso_symbol_flags_value = 0x660001u; 370 371 const uint32_t oso_index_count = symtab->AppendSymbolIndexesWithTypeAndFlagsValue(eSymbolTypeObjectFile, k_oso_symbol_flags_value, oso_indexes); 372 373 if (oso_index_count > 0) 374 { 375 symtab->AppendSymbolIndexesWithType (eSymbolTypeCode, Symtab::eDebugYes, Symtab::eVisibilityAny, m_func_indexes); 376 symtab->AppendSymbolIndexesWithType (eSymbolTypeData, Symtab::eDebugYes, Symtab::eVisibilityAny, m_glob_indexes); 377 378 symtab->SortSymbolIndexesByValue(m_func_indexes, true); 379 symtab->SortSymbolIndexesByValue(m_glob_indexes, true); 380 381 for (uint32_t sym_idx : m_func_indexes) 382 { 383 const Symbol *symbol = symtab->SymbolAtIndex(sym_idx); 384 lldb::addr_t file_addr = symbol->GetAddress().GetFileAddress(); 385 lldb::addr_t byte_size = symbol->GetByteSize(); 386 DebugMap::Entry debug_map_entry(file_addr, byte_size, OSOEntry(sym_idx, LLDB_INVALID_ADDRESS)); 387 m_debug_map.Append(debug_map_entry); 388 } 389 for (uint32_t sym_idx : m_glob_indexes) 390 { 391 const Symbol *symbol = symtab->SymbolAtIndex(sym_idx); 392 lldb::addr_t file_addr = symbol->GetAddress().GetFileAddress(); 393 lldb::addr_t byte_size = symbol->GetByteSize(); 394 DebugMap::Entry debug_map_entry(file_addr, byte_size, OSOEntry(sym_idx, LLDB_INVALID_ADDRESS)); 395 m_debug_map.Append(debug_map_entry); 396 } 397 m_debug_map.Sort(); 398 399 m_compile_unit_infos.resize(oso_index_count); 400 401 for (uint32_t i=0; i<oso_index_count; ++i) 402 { 403 const uint32_t so_idx = oso_indexes[i] - 1; 404 const uint32_t oso_idx = oso_indexes[i]; 405 const Symbol *so_symbol = symtab->SymbolAtIndex(so_idx); 406 const Symbol *oso_symbol = symtab->SymbolAtIndex(oso_idx); 407 if (so_symbol && 408 oso_symbol && 409 so_symbol->GetType() == eSymbolTypeSourceFile && 410 oso_symbol->GetType() == eSymbolTypeObjectFile) 411 { 412 m_compile_unit_infos[i].so_file.SetFile(so_symbol->GetName().AsCString(), false); 413 m_compile_unit_infos[i].oso_path = oso_symbol->GetName(); 414 TimeValue oso_mod_time; 415 oso_mod_time.OffsetWithSeconds(oso_symbol->GetAddress().GetOffset()); 416 m_compile_unit_infos[i].oso_mod_time = oso_mod_time; 417 uint32_t sibling_idx = so_symbol->GetSiblingIndex(); 418 // The sibling index can't be less that or equal to the current index "i" 419 if (sibling_idx == UINT32_MAX) 420 { 421 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()); 422 } 423 else 424 { 425 const Symbol* last_symbol = symtab->SymbolAtIndex (sibling_idx - 1); 426 m_compile_unit_infos[i].first_symbol_index = so_idx; 427 m_compile_unit_infos[i].last_symbol_index = sibling_idx - 1; 428 m_compile_unit_infos[i].first_symbol_id = so_symbol->GetID(); 429 m_compile_unit_infos[i].last_symbol_id = last_symbol->GetID(); 430 431 if (log) 432 log->Printf("Initialized OSO 0x%8.8x: file=%s", i, oso_symbol->GetName().GetCString()); 433 } 434 } 435 else 436 { 437 if (oso_symbol == NULL) 438 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); 439 else if (so_symbol == NULL) 440 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); 441 else if (so_symbol->GetType() != eSymbolTypeSourceFile) 442 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); 443 else if (oso_symbol->GetType() != eSymbolTypeSourceFile) 444 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); 445 } 446 } 447 } 448 } 449 } 450 451 Module * 452 SymbolFileDWARFDebugMap::GetModuleByOSOIndex (uint32_t oso_idx) 453 { 454 const uint32_t cu_count = GetNumCompileUnits(); 455 if (oso_idx < cu_count) 456 return GetModuleByCompUnitInfo (&m_compile_unit_infos[oso_idx]); 457 return NULL; 458 } 459 460 Module * 461 SymbolFileDWARFDebugMap::GetModuleByCompUnitInfo (CompileUnitInfo *comp_unit_info) 462 { 463 if (!comp_unit_info->oso_sp) 464 { 465 auto pos = m_oso_map.find (comp_unit_info->oso_path); 466 if (pos != m_oso_map.end()) 467 { 468 comp_unit_info->oso_sp = pos->second; 469 } 470 else 471 { 472 ObjectFile *obj_file = GetObjectFile(); 473 comp_unit_info->oso_sp.reset (new OSOInfo()); 474 m_oso_map[comp_unit_info->oso_path] = comp_unit_info->oso_sp; 475 const char *oso_path = comp_unit_info->oso_path.GetCString(); 476 FileSpec oso_file (oso_path, false); 477 ConstString oso_object; 478 if (oso_file.Exists()) 479 { 480 TimeValue oso_mod_time (oso_file.GetModificationTime()); 481 if (oso_mod_time != comp_unit_info->oso_mod_time) 482 { 483 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", 484 oso_file.GetPath().c_str(), 485 oso_mod_time.GetAsSecondsSinceJan1_1970(), 486 comp_unit_info->oso_mod_time.GetAsSecondsSinceJan1_1970()); 487 return NULL; 488 } 489 490 } 491 else 492 { 493 const bool must_exist = true; 494 495 if (!ObjectFile::SplitArchivePathWithObject (oso_path, 496 oso_file, 497 oso_object, 498 must_exist)) 499 { 500 return NULL; 501 } 502 } 503 // Always create a new module for .o files. Why? Because we 504 // use the debug map, to add new sections to each .o file and 505 // even though a .o file might not have changed, the sections 506 // that get added to the .o file can change. 507 ArchSpec oso_arch; 508 // Only adopt the architecture from the module (not the vendor or OS) 509 // since .o files for "i386-apple-ios" will historically show up as "i386-apple-macosx" 510 // due to the lack of a LC_VERSION_MIN_MACOSX or LC_VERSION_MIN_IPHONEOS 511 // load command... 512 oso_arch.SetTriple(m_obj_file->GetModule()->GetArchitecture().GetTriple().getArchName().str().c_str()); 513 comp_unit_info->oso_sp->module_sp.reset (new DebugMapModule (obj_file->GetModule(), 514 GetCompUnitInfoIndex(comp_unit_info), 515 oso_file, 516 oso_arch, 517 oso_object ? &oso_object : NULL, 518 0, 519 oso_object ? &comp_unit_info->oso_mod_time : NULL)); 520 } 521 } 522 if (comp_unit_info->oso_sp) 523 return comp_unit_info->oso_sp->module_sp.get(); 524 return NULL; 525 } 526 527 528 bool 529 SymbolFileDWARFDebugMap::GetFileSpecForSO (uint32_t oso_idx, FileSpec &file_spec) 530 { 531 if (oso_idx < m_compile_unit_infos.size()) 532 { 533 if (m_compile_unit_infos[oso_idx].so_file) 534 { 535 file_spec = m_compile_unit_infos[oso_idx].so_file; 536 return true; 537 } 538 } 539 return false; 540 } 541 542 543 544 ObjectFile * 545 SymbolFileDWARFDebugMap::GetObjectFileByOSOIndex (uint32_t oso_idx) 546 { 547 Module *oso_module = GetModuleByOSOIndex (oso_idx); 548 if (oso_module) 549 return oso_module->GetObjectFile(); 550 return NULL; 551 } 552 553 SymbolFileDWARF * 554 SymbolFileDWARFDebugMap::GetSymbolFile (const SymbolContext& sc) 555 { 556 CompileUnitInfo *comp_unit_info = GetCompUnitInfo (sc); 557 if (comp_unit_info) 558 return GetSymbolFileByCompUnitInfo (comp_unit_info); 559 return NULL; 560 } 561 562 ObjectFile * 563 SymbolFileDWARFDebugMap::GetObjectFileByCompUnitInfo (CompileUnitInfo *comp_unit_info) 564 { 565 Module *oso_module = GetModuleByCompUnitInfo (comp_unit_info); 566 if (oso_module) 567 return oso_module->GetObjectFile(); 568 return NULL; 569 } 570 571 572 uint32_t 573 SymbolFileDWARFDebugMap::GetCompUnitInfoIndex (const CompileUnitInfo *comp_unit_info) 574 { 575 if (!m_compile_unit_infos.empty()) 576 { 577 const CompileUnitInfo *first_comp_unit_info = &m_compile_unit_infos.front(); 578 const CompileUnitInfo *last_comp_unit_info = &m_compile_unit_infos.back(); 579 if (first_comp_unit_info <= comp_unit_info && comp_unit_info <= last_comp_unit_info) 580 return comp_unit_info - first_comp_unit_info; 581 } 582 return UINT32_MAX; 583 } 584 585 SymbolFileDWARF * 586 SymbolFileDWARFDebugMap::GetSymbolFileByOSOIndex (uint32_t oso_idx) 587 { 588 if (oso_idx < m_compile_unit_infos.size()) 589 return GetSymbolFileByCompUnitInfo (&m_compile_unit_infos[oso_idx]); 590 return NULL; 591 } 592 593 SymbolFileDWARF * 594 SymbolFileDWARFDebugMap::GetSymbolFileAsSymbolFileDWARF (SymbolFile *sym_file) 595 { 596 if (sym_file && sym_file->GetPluginName() == SymbolFileDWARF::GetPluginNameStatic()) 597 return (SymbolFileDWARF *)sym_file; 598 return NULL; 599 } 600 601 SymbolFileDWARF * 602 SymbolFileDWARFDebugMap::GetSymbolFileByCompUnitInfo (CompileUnitInfo *comp_unit_info) 603 { 604 Module *oso_module = GetModuleByCompUnitInfo (comp_unit_info); 605 if (oso_module) 606 { 607 SymbolVendor *sym_vendor = oso_module->GetSymbolVendor(); 608 if (sym_vendor) 609 return GetSymbolFileAsSymbolFileDWARF (sym_vendor->GetSymbolFile()); 610 } 611 return NULL; 612 } 613 614 uint32_t 615 SymbolFileDWARFDebugMap::CalculateAbilities () 616 { 617 // In order to get the abilities of this plug-in, we look at the list of 618 // N_OSO entries (object files) from the symbol table and make sure that 619 // these files exist and also contain valid DWARF. If we get any of that 620 // then we return the abilities of the first N_OSO's DWARF. 621 622 const uint32_t oso_index_count = GetNumCompileUnits(); 623 if (oso_index_count > 0) 624 { 625 InitOSO(); 626 if (!m_compile_unit_infos.empty()) 627 { 628 return SymbolFile::CompileUnits | 629 SymbolFile::Functions | 630 SymbolFile::Blocks | 631 SymbolFile::GlobalVariables | 632 SymbolFile::LocalVariables | 633 SymbolFile::VariableTypes | 634 SymbolFile::LineTables ; 635 } 636 } 637 return 0; 638 } 639 640 uint32_t 641 SymbolFileDWARFDebugMap::GetNumCompileUnits() 642 { 643 InitOSO (); 644 return m_compile_unit_infos.size(); 645 } 646 647 648 CompUnitSP 649 SymbolFileDWARFDebugMap::ParseCompileUnitAtIndex(uint32_t cu_idx) 650 { 651 CompUnitSP comp_unit_sp; 652 const uint32_t cu_count = GetNumCompileUnits(); 653 654 if (cu_idx < cu_count) 655 { 656 Module *oso_module = GetModuleByCompUnitInfo (&m_compile_unit_infos[cu_idx]); 657 if (oso_module) 658 { 659 FileSpec so_file_spec; 660 if (GetFileSpecForSO (cu_idx, so_file_spec)) 661 { 662 // User zero as the ID to match the compile unit at offset 663 // zero in each .o file since each .o file can only have 664 // one compile unit for now. 665 lldb::user_id_t cu_id = 0; 666 m_compile_unit_infos[cu_idx].compile_unit_sp.reset(new CompileUnit (m_obj_file->GetModule(), 667 NULL, 668 so_file_spec, 669 cu_id, 670 eLanguageTypeUnknown)); 671 672 if (m_compile_unit_infos[cu_idx].compile_unit_sp) 673 { 674 // Let our symbol vendor know about this compile unit 675 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex (cu_idx, m_compile_unit_infos[cu_idx].compile_unit_sp); 676 } 677 } 678 } 679 comp_unit_sp = m_compile_unit_infos[cu_idx].compile_unit_sp; 680 } 681 682 return comp_unit_sp; 683 } 684 685 SymbolFileDWARFDebugMap::CompileUnitInfo * 686 SymbolFileDWARFDebugMap::GetCompUnitInfo (const SymbolContext& sc) 687 { 688 const uint32_t cu_count = GetNumCompileUnits(); 689 for (uint32_t i=0; i<cu_count; ++i) 690 { 691 if (sc.comp_unit == m_compile_unit_infos[i].compile_unit_sp.get()) 692 return &m_compile_unit_infos[i]; 693 } 694 return NULL; 695 } 696 697 698 size_t 699 SymbolFileDWARFDebugMap::GetCompUnitInfosForModule (const lldb_private::Module *module, std::vector<CompileUnitInfo *>& cu_infos) 700 { 701 const uint32_t cu_count = GetNumCompileUnits(); 702 for (uint32_t i=0; i<cu_count; ++i) 703 { 704 if (module == GetModuleByCompUnitInfo (&m_compile_unit_infos[i])) 705 cu_infos.push_back (&m_compile_unit_infos[i]); 706 } 707 return cu_infos.size(); 708 } 709 710 lldb::LanguageType 711 SymbolFileDWARFDebugMap::ParseCompileUnitLanguage (const SymbolContext& sc) 712 { 713 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 714 if (oso_dwarf) 715 return oso_dwarf->ParseCompileUnitLanguage (sc); 716 return eLanguageTypeUnknown; 717 } 718 719 size_t 720 SymbolFileDWARFDebugMap::ParseCompileUnitFunctions (const SymbolContext& sc) 721 { 722 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 723 if (oso_dwarf) 724 return oso_dwarf->ParseCompileUnitFunctions (sc); 725 return 0; 726 } 727 728 bool 729 SymbolFileDWARFDebugMap::ParseCompileUnitLineTable (const SymbolContext& sc) 730 { 731 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 732 if (oso_dwarf) 733 return oso_dwarf->ParseCompileUnitLineTable (sc); 734 return false; 735 } 736 737 bool 738 SymbolFileDWARFDebugMap::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList &support_files) 739 { 740 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 741 if (oso_dwarf) 742 return oso_dwarf->ParseCompileUnitSupportFiles (sc, support_files); 743 return false; 744 } 745 746 747 size_t 748 SymbolFileDWARFDebugMap::ParseFunctionBlocks (const SymbolContext& sc) 749 { 750 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 751 if (oso_dwarf) 752 return oso_dwarf->ParseFunctionBlocks (sc); 753 return 0; 754 } 755 756 757 size_t 758 SymbolFileDWARFDebugMap::ParseTypes (const SymbolContext& sc) 759 { 760 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 761 if (oso_dwarf) 762 return oso_dwarf->ParseTypes (sc); 763 return 0; 764 } 765 766 767 size_t 768 SymbolFileDWARFDebugMap::ParseVariablesForContext (const SymbolContext& sc) 769 { 770 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 771 if (oso_dwarf) 772 return oso_dwarf->ParseVariablesForContext (sc); 773 return 0; 774 } 775 776 777 778 Type* 779 SymbolFileDWARFDebugMap::ResolveTypeUID(lldb::user_id_t type_uid) 780 { 781 const uint64_t oso_idx = GetOSOIndexFromUserID (type_uid); 782 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 783 if (oso_dwarf) 784 return oso_dwarf->ResolveTypeUID (type_uid); 785 return NULL; 786 } 787 788 bool 789 SymbolFileDWARFDebugMap::ResolveClangOpaqueTypeDefinition (ClangASTType& clang_type) 790 { 791 // We have a struct/union/class/enum that needs to be fully resolved. 792 return false; 793 } 794 795 uint32_t 796 SymbolFileDWARFDebugMap::ResolveSymbolContext (const Address& exe_so_addr, uint32_t resolve_scope, SymbolContext& sc) 797 { 798 uint32_t resolved_flags = 0; 799 Symtab* symtab = m_obj_file->GetSymtab(); 800 if (symtab) 801 { 802 const addr_t exe_file_addr = exe_so_addr.GetFileAddress(); 803 804 const DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains (exe_file_addr); 805 if (debug_map_entry) 806 { 807 808 sc.symbol = symtab->SymbolAtIndex(debug_map_entry->data.GetExeSymbolIndex()); 809 810 if (sc.symbol != NULL) 811 { 812 resolved_flags |= eSymbolContextSymbol; 813 814 uint32_t oso_idx = 0; 815 CompileUnitInfo* comp_unit_info = GetCompileUnitInfoForSymbolWithID (sc.symbol->GetID(), &oso_idx); 816 if (comp_unit_info) 817 { 818 comp_unit_info->GetFileRangeMap(this); 819 Module *oso_module = GetModuleByCompUnitInfo (comp_unit_info); 820 if (oso_module) 821 { 822 lldb::addr_t oso_file_addr = exe_file_addr - debug_map_entry->GetRangeBase() + debug_map_entry->data.GetOSOFileAddress(); 823 Address oso_so_addr; 824 if (oso_module->ResolveFileAddress(oso_file_addr, oso_so_addr)) 825 { 826 resolved_flags |= oso_module->GetSymbolVendor()->ResolveSymbolContext (oso_so_addr, resolve_scope, sc); 827 } 828 } 829 } 830 } 831 } 832 } 833 return resolved_flags; 834 } 835 836 837 uint32_t 838 SymbolFileDWARFDebugMap::ResolveSymbolContext (const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list) 839 { 840 const uint32_t initial = sc_list.GetSize(); 841 const uint32_t cu_count = GetNumCompileUnits(); 842 843 for (uint32_t i=0; i<cu_count; ++i) 844 { 845 // If we are checking for inlines, then we need to look through all 846 // compile units no matter if "file_spec" matches. 847 bool resolve = check_inlines; 848 849 if (!resolve) 850 { 851 FileSpec so_file_spec; 852 if (GetFileSpecForSO (i, so_file_spec)) 853 { 854 // Match the full path if the incoming file_spec has a directory (not just a basename) 855 const bool full_match = (bool)file_spec.GetDirectory(); 856 resolve = FileSpec::Equal (file_spec, so_file_spec, full_match); 857 } 858 } 859 if (resolve) 860 { 861 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (i); 862 if (oso_dwarf) 863 oso_dwarf->ResolveSymbolContext(file_spec, line, check_inlines, resolve_scope, sc_list); 864 } 865 } 866 return sc_list.GetSize() - initial; 867 } 868 869 uint32_t 870 SymbolFileDWARFDebugMap::PrivateFindGlobalVariables 871 ( 872 const ConstString &name, 873 const ClangNamespaceDecl *namespace_decl, 874 const std::vector<uint32_t> &indexes, // Indexes into the symbol table that match "name" 875 uint32_t max_matches, 876 VariableList& variables 877 ) 878 { 879 const uint32_t original_size = variables.GetSize(); 880 const size_t match_count = indexes.size(); 881 for (size_t i=0; i<match_count; ++i) 882 { 883 uint32_t oso_idx; 884 CompileUnitInfo* comp_unit_info = GetCompileUnitInfoForSymbolWithIndex (indexes[i], &oso_idx); 885 if (comp_unit_info) 886 { 887 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 888 if (oso_dwarf) 889 { 890 if (oso_dwarf->FindGlobalVariables(name, namespace_decl, true, max_matches, variables)) 891 if (variables.GetSize() > max_matches) 892 break; 893 } 894 } 895 } 896 return variables.GetSize() - original_size; 897 } 898 899 uint32_t 900 SymbolFileDWARFDebugMap::FindGlobalVariables (const ConstString &name, const ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables) 901 { 902 903 // If we aren't appending the results to this list, then clear the list 904 if (!append) 905 variables.Clear(); 906 907 // Remember how many variables are in the list before we search in case 908 // we are appending the results to a variable list. 909 const uint32_t original_size = variables.GetSize(); 910 911 uint32_t total_matches = 0; 912 913 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 914 const uint32_t oso_matches = oso_dwarf->FindGlobalVariables (name, 915 namespace_decl, 916 true, 917 max_matches, 918 variables); 919 if (oso_matches > 0) 920 { 921 total_matches += oso_matches; 922 923 // Are we getting all matches? 924 if (max_matches == UINT32_MAX) 925 return false; // Yep, continue getting everything 926 927 // If we have found enough matches, lets get out 928 if (max_matches >= total_matches) 929 return true; 930 931 // Update the max matches for any subsequent calls to find globals 932 // in any other object files with DWARF 933 max_matches -= oso_matches; 934 } 935 936 return false; 937 }); 938 939 // Return the number of variable that were appended to the list 940 return variables.GetSize() - original_size; 941 } 942 943 944 uint32_t 945 SymbolFileDWARFDebugMap::FindGlobalVariables (const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables) 946 { 947 // If we aren't appending the results to this list, then clear the list 948 if (!append) 949 variables.Clear(); 950 951 // Remember how many variables are in the list before we search in case 952 // we are appending the results to a variable list. 953 const uint32_t original_size = variables.GetSize(); 954 955 uint32_t total_matches = 0; 956 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 957 const uint32_t oso_matches = oso_dwarf->FindGlobalVariables (regex, 958 true, 959 max_matches, 960 variables); 961 if (oso_matches > 0) 962 { 963 total_matches += oso_matches; 964 965 // Are we getting all matches? 966 if (max_matches == UINT32_MAX) 967 return false; // Yep, continue getting everything 968 969 // If we have found enough matches, lets get out 970 if (max_matches >= total_matches) 971 return true; 972 973 // Update the max matches for any subsequent calls to find globals 974 // in any other object files with DWARF 975 max_matches -= oso_matches; 976 } 977 978 return false; 979 }); 980 981 // Return the number of variable that were appended to the list 982 return variables.GetSize() - original_size; 983 } 984 985 986 int 987 SymbolFileDWARFDebugMap::SymbolContainsSymbolWithIndex (uint32_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info) 988 { 989 const uint32_t symbol_idx = *symbol_idx_ptr; 990 991 if (symbol_idx < comp_unit_info->first_symbol_index) 992 return -1; 993 994 if (symbol_idx <= comp_unit_info->last_symbol_index) 995 return 0; 996 997 return 1; 998 } 999 1000 1001 int 1002 SymbolFileDWARFDebugMap::SymbolContainsSymbolWithID (user_id_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info) 1003 { 1004 const user_id_t symbol_id = *symbol_idx_ptr; 1005 1006 if (symbol_id < comp_unit_info->first_symbol_id) 1007 return -1; 1008 1009 if (symbol_id <= comp_unit_info->last_symbol_id) 1010 return 0; 1011 1012 return 1; 1013 } 1014 1015 1016 SymbolFileDWARFDebugMap::CompileUnitInfo* 1017 SymbolFileDWARFDebugMap::GetCompileUnitInfoForSymbolWithIndex (uint32_t symbol_idx, uint32_t *oso_idx_ptr) 1018 { 1019 const uint32_t oso_index_count = m_compile_unit_infos.size(); 1020 CompileUnitInfo *comp_unit_info = NULL; 1021 if (oso_index_count) 1022 { 1023 comp_unit_info = (CompileUnitInfo*)bsearch(&symbol_idx, 1024 &m_compile_unit_infos[0], 1025 m_compile_unit_infos.size(), 1026 sizeof(CompileUnitInfo), 1027 (ComparisonFunction)SymbolContainsSymbolWithIndex); 1028 } 1029 1030 if (oso_idx_ptr) 1031 { 1032 if (comp_unit_info != NULL) 1033 *oso_idx_ptr = comp_unit_info - &m_compile_unit_infos[0]; 1034 else 1035 *oso_idx_ptr = UINT32_MAX; 1036 } 1037 return comp_unit_info; 1038 } 1039 1040 SymbolFileDWARFDebugMap::CompileUnitInfo* 1041 SymbolFileDWARFDebugMap::GetCompileUnitInfoForSymbolWithID (user_id_t symbol_id, uint32_t *oso_idx_ptr) 1042 { 1043 const uint32_t oso_index_count = m_compile_unit_infos.size(); 1044 CompileUnitInfo *comp_unit_info = NULL; 1045 if (oso_index_count) 1046 { 1047 comp_unit_info = (CompileUnitInfo*)::bsearch (&symbol_id, 1048 &m_compile_unit_infos[0], 1049 m_compile_unit_infos.size(), 1050 sizeof(CompileUnitInfo), 1051 (ComparisonFunction)SymbolContainsSymbolWithID); 1052 } 1053 1054 if (oso_idx_ptr) 1055 { 1056 if (comp_unit_info != NULL) 1057 *oso_idx_ptr = comp_unit_info - &m_compile_unit_infos[0]; 1058 else 1059 *oso_idx_ptr = UINT32_MAX; 1060 } 1061 return comp_unit_info; 1062 } 1063 1064 1065 static void 1066 RemoveFunctionsWithModuleNotEqualTo (const ModuleSP &module_sp, SymbolContextList &sc_list, uint32_t start_idx) 1067 { 1068 // We found functions in .o files. Not all functions in the .o files 1069 // will have made it into the final output file. The ones that did 1070 // make it into the final output file will have a section whose module 1071 // matches the module from the ObjectFile for this SymbolFile. When 1072 // the modules don't match, then we have something that was in a 1073 // .o file, but doesn't map to anything in the final executable. 1074 uint32_t i=start_idx; 1075 while (i < sc_list.GetSize()) 1076 { 1077 SymbolContext sc; 1078 sc_list.GetContextAtIndex(i, sc); 1079 if (sc.function) 1080 { 1081 const SectionSP section_sp (sc.function->GetAddressRange().GetBaseAddress().GetSection()); 1082 if (section_sp->GetModule() != module_sp) 1083 { 1084 sc_list.RemoveContextAtIndex(i); 1085 continue; 1086 } 1087 } 1088 ++i; 1089 } 1090 } 1091 1092 uint32_t 1093 SymbolFileDWARFDebugMap::FindFunctions(const ConstString &name, const ClangNamespaceDecl *namespace_decl, uint32_t name_type_mask, bool include_inlines, bool append, SymbolContextList& sc_list) 1094 { 1095 Timer scoped_timer (__PRETTY_FUNCTION__, 1096 "SymbolFileDWARFDebugMap::FindFunctions (name = %s)", 1097 name.GetCString()); 1098 1099 uint32_t initial_size = 0; 1100 if (append) 1101 initial_size = sc_list.GetSize(); 1102 else 1103 sc_list.Clear(); 1104 1105 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1106 uint32_t sc_idx = sc_list.GetSize(); 1107 if (oso_dwarf->FindFunctions(name, namespace_decl, name_type_mask, include_inlines, true, sc_list)) 1108 { 1109 RemoveFunctionsWithModuleNotEqualTo (m_obj_file->GetModule(), sc_list, sc_idx); 1110 } 1111 return false; 1112 }); 1113 1114 return sc_list.GetSize() - initial_size; 1115 } 1116 1117 1118 uint32_t 1119 SymbolFileDWARFDebugMap::FindFunctions (const RegularExpression& regex, bool include_inlines, bool append, SymbolContextList& sc_list) 1120 { 1121 Timer scoped_timer (__PRETTY_FUNCTION__, 1122 "SymbolFileDWARFDebugMap::FindFunctions (regex = '%s')", 1123 regex.GetText()); 1124 1125 uint32_t initial_size = 0; 1126 if (append) 1127 initial_size = sc_list.GetSize(); 1128 else 1129 sc_list.Clear(); 1130 1131 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1132 uint32_t sc_idx = sc_list.GetSize(); 1133 1134 if (oso_dwarf->FindFunctions(regex, include_inlines, true, sc_list)) 1135 { 1136 RemoveFunctionsWithModuleNotEqualTo (m_obj_file->GetModule(), sc_list, sc_idx); 1137 } 1138 return false; 1139 }); 1140 1141 return sc_list.GetSize() - initial_size; 1142 } 1143 1144 size_t 1145 SymbolFileDWARFDebugMap::GetTypes (SymbolContextScope *sc_scope, 1146 uint32_t type_mask, 1147 TypeList &type_list) 1148 { 1149 Timer scoped_timer (__PRETTY_FUNCTION__, 1150 "SymbolFileDWARFDebugMap::GetTypes (type_mask = 0x%8.8x)", 1151 type_mask); 1152 1153 1154 uint32_t initial_size = type_list.GetSize(); 1155 SymbolFileDWARF *oso_dwarf = NULL; 1156 if (sc_scope) 1157 { 1158 SymbolContext sc; 1159 sc_scope->CalculateSymbolContext(&sc); 1160 1161 CompileUnitInfo *cu_info = GetCompUnitInfo (sc); 1162 if (cu_info) 1163 { 1164 oso_dwarf = GetSymbolFileByCompUnitInfo (cu_info); 1165 if (oso_dwarf) 1166 oso_dwarf->GetTypes (sc_scope, type_mask, type_list); 1167 } 1168 } 1169 else 1170 { 1171 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1172 oso_dwarf->GetTypes (sc_scope, type_mask, type_list); 1173 return false; 1174 }); 1175 } 1176 return type_list.GetSize() - initial_size; 1177 } 1178 1179 1180 TypeSP 1181 SymbolFileDWARFDebugMap::FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &die_decl_ctx) 1182 { 1183 TypeSP type_sp; 1184 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1185 type_sp = oso_dwarf->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); 1186 return ((bool)type_sp); 1187 }); 1188 return type_sp; 1189 } 1190 1191 1192 1193 bool 1194 SymbolFileDWARFDebugMap::Supports_DW_AT_APPLE_objc_complete_type (SymbolFileDWARF *skip_dwarf_oso) 1195 { 1196 if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate) 1197 { 1198 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo; 1199 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1200 if (skip_dwarf_oso != oso_dwarf && oso_dwarf->Supports_DW_AT_APPLE_objc_complete_type(NULL)) 1201 { 1202 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; 1203 return true; 1204 } 1205 return false; 1206 }); 1207 } 1208 return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes; 1209 } 1210 1211 TypeSP 1212 SymbolFileDWARFDebugMap::FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die, 1213 const ConstString &type_name, 1214 bool must_be_implementation) 1215 { 1216 // If we have a debug map, we will have an Objective C symbol whose name is 1217 // the type name and whose type is eSymbolTypeObjCClass. If we can find that 1218 // symbol and find its containing parent, we can locate the .o file that will 1219 // contain the implementation definition since it will be scoped inside the N_SO 1220 // and we can then locate the SymbolFileDWARF that corresponds to that N_SO. 1221 SymbolFileDWARF *oso_dwarf = NULL; 1222 TypeSP type_sp; 1223 ObjectFile *module_objfile = m_obj_file->GetModule()->GetObjectFile(); 1224 if (module_objfile) 1225 { 1226 Symtab *symtab = module_objfile->GetSymtab(); 1227 if (symtab) 1228 { 1229 Symbol *objc_class_symbol = symtab->FindFirstSymbolWithNameAndType(type_name, eSymbolTypeObjCClass, Symtab::eDebugAny, Symtab::eVisibilityAny); 1230 if (objc_class_symbol) 1231 { 1232 // Get the N_SO symbol that contains the objective C class symbol as this 1233 // should be the .o file that contains the real definition... 1234 const Symbol *source_file_symbol = symtab->GetParent(objc_class_symbol); 1235 1236 if (source_file_symbol && source_file_symbol->GetType() == eSymbolTypeSourceFile) 1237 { 1238 const uint32_t source_file_symbol_idx = symtab->GetIndexForSymbol(source_file_symbol); 1239 if (source_file_symbol_idx != UINT32_MAX) 1240 { 1241 CompileUnitInfo *compile_unit_info = GetCompileUnitInfoForSymbolWithIndex (source_file_symbol_idx, NULL); 1242 if (compile_unit_info) 1243 { 1244 oso_dwarf = GetSymbolFileByCompUnitInfo (compile_unit_info); 1245 if (oso_dwarf) 1246 { 1247 TypeSP type_sp (oso_dwarf->FindCompleteObjCDefinitionTypeForDIE (die, type_name, must_be_implementation)); 1248 if (type_sp) 1249 { 1250 return type_sp; 1251 } 1252 } 1253 } 1254 } 1255 } 1256 } 1257 } 1258 } 1259 1260 // Only search all .o files for the definition if we don't need the implementation 1261 // because otherwise, with a valid debug map we should have the ObjC class symbol and 1262 // the code above should have found it. 1263 if (must_be_implementation == false) 1264 { 1265 TypeSP type_sp; 1266 1267 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1268 type_sp = oso_dwarf->FindCompleteObjCDefinitionTypeForDIE (die, type_name, must_be_implementation); 1269 return (bool)type_sp; 1270 }); 1271 1272 return type_sp; 1273 } 1274 return TypeSP(); 1275 } 1276 1277 uint32_t 1278 SymbolFileDWARFDebugMap::FindTypes 1279 ( 1280 const SymbolContext& sc, 1281 const ConstString &name, 1282 const ClangNamespaceDecl *namespace_decl, 1283 bool append, 1284 uint32_t max_matches, 1285 TypeList& types 1286 ) 1287 { 1288 if (!append) 1289 types.Clear(); 1290 1291 const uint32_t initial_types_size = types.GetSize(); 1292 SymbolFileDWARF *oso_dwarf; 1293 1294 if (sc.comp_unit) 1295 { 1296 oso_dwarf = GetSymbolFile (sc); 1297 if (oso_dwarf) 1298 return oso_dwarf->FindTypes (sc, name, namespace_decl, append, max_matches, types); 1299 } 1300 else 1301 { 1302 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1303 oso_dwarf->FindTypes (sc, name, namespace_decl, append, max_matches, types); 1304 return false; 1305 }); 1306 } 1307 1308 return types.GetSize() - initial_types_size; 1309 } 1310 1311 // 1312 //uint32_t 1313 //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) 1314 //{ 1315 // SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 1316 // if (oso_dwarf) 1317 // return oso_dwarf->FindTypes (sc, regex, append, max_matches, encoding, udt_uid, types); 1318 // return 0; 1319 //} 1320 1321 1322 ClangNamespaceDecl 1323 SymbolFileDWARFDebugMap::FindNamespace (const lldb_private::SymbolContext& sc, 1324 const lldb_private::ConstString &name, 1325 const ClangNamespaceDecl *parent_namespace_decl) 1326 { 1327 ClangNamespaceDecl matching_namespace; 1328 SymbolFileDWARF *oso_dwarf; 1329 1330 if (sc.comp_unit) 1331 { 1332 oso_dwarf = GetSymbolFile (sc); 1333 if (oso_dwarf) 1334 matching_namespace = oso_dwarf->FindNamespace (sc, name, parent_namespace_decl); 1335 } 1336 else 1337 { 1338 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1339 matching_namespace = oso_dwarf->FindNamespace (sc, name, parent_namespace_decl); 1340 1341 return (bool)matching_namespace; 1342 }); 1343 } 1344 1345 return matching_namespace; 1346 } 1347 1348 //------------------------------------------------------------------ 1349 // PluginInterface protocol 1350 //------------------------------------------------------------------ 1351 lldb_private::ConstString 1352 SymbolFileDWARFDebugMap::GetPluginName() 1353 { 1354 return GetPluginNameStatic(); 1355 } 1356 1357 uint32_t 1358 SymbolFileDWARFDebugMap::GetPluginVersion() 1359 { 1360 return 1; 1361 } 1362 1363 lldb::CompUnitSP 1364 SymbolFileDWARFDebugMap::GetCompileUnit (SymbolFileDWARF *oso_dwarf) 1365 { 1366 if (oso_dwarf) 1367 { 1368 const uint32_t cu_count = GetNumCompileUnits(); 1369 for (uint32_t cu_idx=0; cu_idx<cu_count; ++cu_idx) 1370 { 1371 SymbolFileDWARF *oso_symfile = GetSymbolFileByCompUnitInfo (&m_compile_unit_infos[cu_idx]); 1372 if (oso_symfile == oso_dwarf) 1373 { 1374 if (!m_compile_unit_infos[cu_idx].compile_unit_sp) 1375 m_compile_unit_infos[cu_idx].compile_unit_sp = ParseCompileUnitAtIndex (cu_idx); 1376 1377 return m_compile_unit_infos[cu_idx].compile_unit_sp; 1378 } 1379 } 1380 } 1381 assert(!"this shouldn't happen"); 1382 return lldb::CompUnitSP(); 1383 } 1384 1385 SymbolFileDWARFDebugMap::CompileUnitInfo * 1386 SymbolFileDWARFDebugMap::GetCompileUnitInfo (SymbolFileDWARF *oso_dwarf) 1387 { 1388 if (oso_dwarf) 1389 { 1390 const uint32_t cu_count = GetNumCompileUnits(); 1391 for (uint32_t cu_idx=0; cu_idx<cu_count; ++cu_idx) 1392 { 1393 SymbolFileDWARF *oso_symfile = GetSymbolFileByCompUnitInfo (&m_compile_unit_infos[cu_idx]); 1394 if (oso_symfile == oso_dwarf) 1395 { 1396 return &m_compile_unit_infos[cu_idx]; 1397 } 1398 } 1399 } 1400 return NULL; 1401 } 1402 1403 1404 void 1405 SymbolFileDWARFDebugMap::SetCompileUnit (SymbolFileDWARF *oso_dwarf, const CompUnitSP &cu_sp) 1406 { 1407 if (oso_dwarf) 1408 { 1409 const uint32_t cu_count = GetNumCompileUnits(); 1410 for (uint32_t cu_idx=0; cu_idx<cu_count; ++cu_idx) 1411 { 1412 SymbolFileDWARF *oso_symfile = GetSymbolFileByCompUnitInfo (&m_compile_unit_infos[cu_idx]); 1413 if (oso_symfile == oso_dwarf) 1414 { 1415 if (m_compile_unit_infos[cu_idx].compile_unit_sp) 1416 { 1417 assert (m_compile_unit_infos[cu_idx].compile_unit_sp.get() == cu_sp.get()); 1418 } 1419 else 1420 { 1421 m_compile_unit_infos[cu_idx].compile_unit_sp = cu_sp; 1422 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp); 1423 } 1424 } 1425 } 1426 } 1427 } 1428 1429 1430 void 1431 SymbolFileDWARFDebugMap::CompleteTagDecl (void *baton, clang::TagDecl *decl) 1432 { 1433 SymbolFileDWARFDebugMap *symbol_file_dwarf = (SymbolFileDWARFDebugMap *)baton; 1434 ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); 1435 if (clang_type) 1436 { 1437 symbol_file_dwarf->ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1438 if (oso_dwarf->HasForwardDeclForClangType (clang_type)) 1439 { 1440 oso_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); 1441 return true; 1442 } 1443 return false; 1444 }); 1445 } 1446 } 1447 1448 void 1449 SymbolFileDWARFDebugMap::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *decl) 1450 { 1451 SymbolFileDWARFDebugMap *symbol_file_dwarf = (SymbolFileDWARFDebugMap *)baton; 1452 ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); 1453 if (clang_type) 1454 { 1455 symbol_file_dwarf->ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1456 if (oso_dwarf->HasForwardDeclForClangType (clang_type)) 1457 { 1458 oso_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); 1459 return true; 1460 } 1461 return false; 1462 }); 1463 } 1464 } 1465 1466 bool 1467 SymbolFileDWARFDebugMap::LayoutRecordType(void *baton, const clang::RecordDecl *record_decl, uint64_t &size, 1468 uint64_t &alignment, 1469 llvm::DenseMap<const clang::FieldDecl *, uint64_t> &field_offsets, 1470 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets, 1471 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets) 1472 { 1473 SymbolFileDWARFDebugMap *symbol_file_dwarf = (SymbolFileDWARFDebugMap *)baton; 1474 bool laid_out = false; 1475 symbol_file_dwarf->ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1476 return (laid_out = oso_dwarf->LayoutRecordType (record_decl, size, alignment, field_offsets, base_offsets, vbase_offsets)); 1477 }); 1478 return laid_out; 1479 } 1480 1481 1482 1483 clang::DeclContext* 1484 SymbolFileDWARFDebugMap::GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid) 1485 { 1486 const uint64_t oso_idx = GetOSOIndexFromUserID (type_uid); 1487 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 1488 if (oso_dwarf) 1489 return oso_dwarf->GetClangDeclContextContainingTypeUID (type_uid); 1490 return NULL; 1491 } 1492 1493 clang::DeclContext* 1494 SymbolFileDWARFDebugMap::GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid) 1495 { 1496 const uint64_t oso_idx = GetOSOIndexFromUserID (type_uid); 1497 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 1498 if (oso_dwarf) 1499 return oso_dwarf->GetClangDeclContextForTypeUID (sc, type_uid); 1500 return NULL; 1501 } 1502 1503 bool 1504 SymbolFileDWARFDebugMap::AddOSOFileRange (CompileUnitInfo *cu_info, 1505 lldb::addr_t exe_file_addr, 1506 lldb::addr_t oso_file_addr, 1507 lldb::addr_t oso_byte_size) 1508 { 1509 const uint32_t debug_map_idx = m_debug_map.FindEntryIndexThatContains(exe_file_addr); 1510 if (debug_map_idx != UINT32_MAX) 1511 { 1512 DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains(exe_file_addr); 1513 debug_map_entry->data.SetOSOFileAddress(oso_file_addr); 1514 cu_info->file_range_map.Append(FileRangeMap::Entry(oso_file_addr, oso_byte_size, exe_file_addr)); 1515 return true; 1516 } 1517 return false; 1518 } 1519 1520 void 1521 SymbolFileDWARFDebugMap::FinalizeOSOFileRanges (CompileUnitInfo *cu_info) 1522 { 1523 cu_info->file_range_map.Sort(); 1524 #if defined(DEBUG_OSO_DMAP) 1525 const FileRangeMap &oso_file_range_map = cu_info->GetFileRangeMap(this); 1526 const size_t n = oso_file_range_map.GetSize(); 1527 printf ("SymbolFileDWARFDebugMap::FinalizeOSOFileRanges (cu_info = %p) %s\n", 1528 cu_info, 1529 cu_info->oso_sp->module_sp->GetFileSpec().GetPath().c_str()); 1530 for (size_t i=0; i<n; ++i) 1531 { 1532 const FileRangeMap::Entry &entry = oso_file_range_map.GetEntryRef(i); 1533 printf ("oso [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ") ==> exe [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ")\n", 1534 entry.GetRangeBase(), entry.GetRangeEnd(), 1535 entry.data, entry.data + entry.GetByteSize()); 1536 } 1537 #endif 1538 } 1539 1540 lldb::addr_t 1541 SymbolFileDWARFDebugMap::LinkOSOFileAddress (SymbolFileDWARF *oso_symfile, lldb::addr_t oso_file_addr) 1542 { 1543 CompileUnitInfo *cu_info = GetCompileUnitInfo (oso_symfile); 1544 if (cu_info) 1545 { 1546 const FileRangeMap::Entry *oso_range_entry = cu_info->GetFileRangeMap(this).FindEntryThatContains(oso_file_addr); 1547 if (oso_range_entry) 1548 { 1549 const DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains(oso_range_entry->data); 1550 if (debug_map_entry) 1551 { 1552 const lldb::addr_t offset = oso_file_addr - oso_range_entry->GetRangeBase(); 1553 const lldb::addr_t exe_file_addr = debug_map_entry->GetRangeBase() + offset; 1554 return exe_file_addr; 1555 } 1556 } 1557 } 1558 return LLDB_INVALID_ADDRESS; 1559 } 1560 1561 bool 1562 SymbolFileDWARFDebugMap::LinkOSOAddress (Address &addr) 1563 { 1564 // Make sure this address hasn't been fixed already 1565 Module *exe_module = GetObjectFile()->GetModule().get(); 1566 Module *addr_module = addr.GetModule().get(); 1567 if (addr_module == exe_module) 1568 return true; // Address is already in terms of the main executable module 1569 1570 CompileUnitInfo *cu_info = GetCompileUnitInfo (GetSymbolFileAsSymbolFileDWARF(addr_module->GetSymbolVendor()->GetSymbolFile())); 1571 if (cu_info) 1572 { 1573 const lldb::addr_t oso_file_addr = addr.GetFileAddress(); 1574 const FileRangeMap::Entry *oso_range_entry = cu_info->GetFileRangeMap(this).FindEntryThatContains(oso_file_addr); 1575 if (oso_range_entry) 1576 { 1577 const DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains(oso_range_entry->data); 1578 if (debug_map_entry) 1579 { 1580 const lldb::addr_t offset = oso_file_addr - oso_range_entry->GetRangeBase(); 1581 const lldb::addr_t exe_file_addr = debug_map_entry->GetRangeBase() + offset; 1582 return exe_module->ResolveFileAddress(exe_file_addr, addr); 1583 } 1584 } 1585 } 1586 return true; 1587 } 1588 1589 LineTable * 1590 SymbolFileDWARFDebugMap::LinkOSOLineTable (SymbolFileDWARF *oso_dwarf, LineTable *line_table) 1591 { 1592 CompileUnitInfo *cu_info = GetCompileUnitInfo (oso_dwarf); 1593 if (cu_info) 1594 return line_table->LinkLineTable(cu_info->GetFileRangeMap(this)); 1595 return NULL; 1596 } 1597 1598 size_t 1599 SymbolFileDWARFDebugMap::AddOSOARanges (SymbolFileDWARF* dwarf2Data, DWARFDebugAranges* debug_aranges) 1600 { 1601 size_t num_line_entries_added = 0; 1602 if (debug_aranges && dwarf2Data) 1603 { 1604 CompileUnitInfo *compile_unit_info = GetCompileUnitInfo(dwarf2Data); 1605 if (compile_unit_info) 1606 { 1607 const FileRangeMap &file_range_map = compile_unit_info->GetFileRangeMap(this); 1608 for (size_t idx = 0; 1609 idx < file_range_map.GetSize(); 1610 idx++) 1611 { 1612 const FileRangeMap::Entry* entry = file_range_map.GetEntryAtIndex(idx); 1613 if (entry) 1614 { 1615 printf ("[0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ")\n", entry->GetRangeBase(), entry->GetRangeEnd()); 1616 debug_aranges->AppendRange(dwarf2Data->GetID(), entry->GetRangeBase(), entry->GetRangeEnd()); 1617 num_line_entries_added++; 1618 } 1619 } 1620 } 1621 } 1622 return num_line_entries_added; 1623 } 1624 1625