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