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::ParseCompileUnitDebugMacros (const SymbolContext& sc) 711 { 712 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 713 if (oso_dwarf) 714 return oso_dwarf->ParseCompileUnitDebugMacros (sc); 715 return false; 716 } 717 718 bool 719 SymbolFileDWARFDebugMap::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList &support_files) 720 { 721 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 722 if (oso_dwarf) 723 return oso_dwarf->ParseCompileUnitSupportFiles (sc, support_files); 724 return false; 725 } 726 727 bool 728 SymbolFileDWARFDebugMap::ParseImportedModules (const SymbolContext &sc, std::vector<ConstString> &imported_modules) 729 { 730 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 731 if (oso_dwarf) 732 return oso_dwarf->ParseImportedModules(sc, imported_modules); 733 return false; 734 } 735 736 size_t 737 SymbolFileDWARFDebugMap::ParseFunctionBlocks (const SymbolContext& sc) 738 { 739 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 740 if (oso_dwarf) 741 return oso_dwarf->ParseFunctionBlocks (sc); 742 return 0; 743 } 744 745 size_t 746 SymbolFileDWARFDebugMap::ParseTypes (const SymbolContext& sc) 747 { 748 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 749 if (oso_dwarf) 750 return oso_dwarf->ParseTypes (sc); 751 return 0; 752 } 753 754 size_t 755 SymbolFileDWARFDebugMap::ParseVariablesForContext (const SymbolContext& sc) 756 { 757 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 758 if (oso_dwarf) 759 return oso_dwarf->ParseVariablesForContext (sc); 760 return 0; 761 } 762 763 Type* 764 SymbolFileDWARFDebugMap::ResolveTypeUID(lldb::user_id_t type_uid) 765 { 766 const uint64_t oso_idx = GetOSOIndexFromUserID (type_uid); 767 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 768 if (oso_dwarf) 769 return oso_dwarf->ResolveTypeUID (type_uid); 770 return NULL; 771 } 772 773 bool 774 SymbolFileDWARFDebugMap::CompleteType (CompilerType& compiler_type) 775 { 776 bool success = false; 777 if (compiler_type) 778 { 779 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 780 if (oso_dwarf->HasForwardDeclForClangType (compiler_type)) 781 { 782 oso_dwarf->CompleteType (compiler_type); 783 success = true; 784 return true; 785 } 786 return false; 787 }); 788 } 789 return success; 790 } 791 792 uint32_t 793 SymbolFileDWARFDebugMap::ResolveSymbolContext (const Address& exe_so_addr, uint32_t resolve_scope, SymbolContext& sc) 794 { 795 uint32_t resolved_flags = 0; 796 Symtab* symtab = m_obj_file->GetSymtab(); 797 if (symtab) 798 { 799 const addr_t exe_file_addr = exe_so_addr.GetFileAddress(); 800 801 const DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains (exe_file_addr); 802 if (debug_map_entry) 803 { 804 805 sc.symbol = symtab->SymbolAtIndex(debug_map_entry->data.GetExeSymbolIndex()); 806 807 if (sc.symbol != NULL) 808 { 809 resolved_flags |= eSymbolContextSymbol; 810 811 uint32_t oso_idx = 0; 812 CompileUnitInfo* comp_unit_info = GetCompileUnitInfoForSymbolWithID (sc.symbol->GetID(), &oso_idx); 813 if (comp_unit_info) 814 { 815 comp_unit_info->GetFileRangeMap(this); 816 Module *oso_module = GetModuleByCompUnitInfo (comp_unit_info); 817 if (oso_module) 818 { 819 lldb::addr_t oso_file_addr = exe_file_addr - debug_map_entry->GetRangeBase() + debug_map_entry->data.GetOSOFileAddress(); 820 Address oso_so_addr; 821 if (oso_module->ResolveFileAddress(oso_file_addr, oso_so_addr)) 822 { 823 resolved_flags |= oso_module->GetSymbolVendor()->ResolveSymbolContext (oso_so_addr, resolve_scope, sc); 824 } 825 } 826 } 827 } 828 } 829 } 830 return resolved_flags; 831 } 832 833 uint32_t 834 SymbolFileDWARFDebugMap::ResolveSymbolContext (const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list) 835 { 836 const uint32_t initial = sc_list.GetSize(); 837 const uint32_t cu_count = GetNumCompileUnits(); 838 839 for (uint32_t i=0; i<cu_count; ++i) 840 { 841 // If we are checking for inlines, then we need to look through all 842 // compile units no matter if "file_spec" matches. 843 bool resolve = check_inlines; 844 845 if (!resolve) 846 { 847 FileSpec so_file_spec; 848 if (GetFileSpecForSO (i, so_file_spec)) 849 { 850 // Match the full path if the incoming file_spec has a directory (not just a basename) 851 const bool full_match = (bool)file_spec.GetDirectory(); 852 resolve = FileSpec::Equal (file_spec, so_file_spec, full_match); 853 } 854 } 855 if (resolve) 856 { 857 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (i); 858 if (oso_dwarf) 859 oso_dwarf->ResolveSymbolContext(file_spec, line, check_inlines, resolve_scope, sc_list); 860 } 861 } 862 return sc_list.GetSize() - initial; 863 } 864 865 uint32_t 866 SymbolFileDWARFDebugMap::PrivateFindGlobalVariables 867 ( 868 const ConstString &name, 869 const CompilerDeclContext *parent_decl_ctx, 870 const std::vector<uint32_t> &indexes, // Indexes into the symbol table that match "name" 871 uint32_t max_matches, 872 VariableList& variables 873 ) 874 { 875 const uint32_t original_size = variables.GetSize(); 876 const size_t match_count = indexes.size(); 877 for (size_t i=0; i<match_count; ++i) 878 { 879 uint32_t oso_idx; 880 CompileUnitInfo* comp_unit_info = GetCompileUnitInfoForSymbolWithIndex (indexes[i], &oso_idx); 881 if (comp_unit_info) 882 { 883 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 884 if (oso_dwarf) 885 { 886 if (oso_dwarf->FindGlobalVariables(name, parent_decl_ctx, true, max_matches, variables)) 887 if (variables.GetSize() > max_matches) 888 break; 889 } 890 } 891 } 892 return variables.GetSize() - original_size; 893 } 894 895 uint32_t 896 SymbolFileDWARFDebugMap::FindGlobalVariables (const ConstString &name, 897 const CompilerDeclContext *parent_decl_ctx, 898 bool append, 899 uint32_t max_matches, 900 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 parent_decl_ctx, 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 uint32_t 944 SymbolFileDWARFDebugMap::FindGlobalVariables (const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables) 945 { 946 // If we aren't appending the results to this list, then clear the list 947 if (!append) 948 variables.Clear(); 949 950 // Remember how many variables are in the list before we search in case 951 // we are appending the results to a variable list. 952 const uint32_t original_size = variables.GetSize(); 953 954 uint32_t total_matches = 0; 955 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 956 const uint32_t oso_matches = oso_dwarf->FindGlobalVariables (regex, 957 true, 958 max_matches, 959 variables); 960 if (oso_matches > 0) 961 { 962 total_matches += oso_matches; 963 964 // Are we getting all matches? 965 if (max_matches == UINT32_MAX) 966 return false; // Yep, continue getting everything 967 968 // If we have found enough matches, lets get out 969 if (max_matches >= total_matches) 970 return true; 971 972 // Update the max matches for any subsequent calls to find globals 973 // in any other object files with DWARF 974 max_matches -= oso_matches; 975 } 976 977 return false; 978 }); 979 980 // Return the number of variable that were appended to the list 981 return variables.GetSize() - original_size; 982 } 983 984 int 985 SymbolFileDWARFDebugMap::SymbolContainsSymbolWithIndex (uint32_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info) 986 { 987 const uint32_t symbol_idx = *symbol_idx_ptr; 988 989 if (symbol_idx < comp_unit_info->first_symbol_index) 990 return -1; 991 992 if (symbol_idx <= comp_unit_info->last_symbol_index) 993 return 0; 994 995 return 1; 996 } 997 998 int 999 SymbolFileDWARFDebugMap::SymbolContainsSymbolWithID (user_id_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info) 1000 { 1001 const user_id_t symbol_id = *symbol_idx_ptr; 1002 1003 if (symbol_id < comp_unit_info->first_symbol_id) 1004 return -1; 1005 1006 if (symbol_id <= comp_unit_info->last_symbol_id) 1007 return 0; 1008 1009 return 1; 1010 } 1011 1012 SymbolFileDWARFDebugMap::CompileUnitInfo* 1013 SymbolFileDWARFDebugMap::GetCompileUnitInfoForSymbolWithIndex (uint32_t symbol_idx, uint32_t *oso_idx_ptr) 1014 { 1015 const uint32_t oso_index_count = m_compile_unit_infos.size(); 1016 CompileUnitInfo *comp_unit_info = NULL; 1017 if (oso_index_count) 1018 { 1019 comp_unit_info = (CompileUnitInfo*)bsearch(&symbol_idx, 1020 &m_compile_unit_infos[0], 1021 m_compile_unit_infos.size(), 1022 sizeof(CompileUnitInfo), 1023 (ComparisonFunction)SymbolContainsSymbolWithIndex); 1024 } 1025 1026 if (oso_idx_ptr) 1027 { 1028 if (comp_unit_info != NULL) 1029 *oso_idx_ptr = comp_unit_info - &m_compile_unit_infos[0]; 1030 else 1031 *oso_idx_ptr = UINT32_MAX; 1032 } 1033 return comp_unit_info; 1034 } 1035 1036 SymbolFileDWARFDebugMap::CompileUnitInfo* 1037 SymbolFileDWARFDebugMap::GetCompileUnitInfoForSymbolWithID (user_id_t symbol_id, uint32_t *oso_idx_ptr) 1038 { 1039 const uint32_t oso_index_count = m_compile_unit_infos.size(); 1040 CompileUnitInfo *comp_unit_info = NULL; 1041 if (oso_index_count) 1042 { 1043 comp_unit_info = (CompileUnitInfo*)::bsearch (&symbol_id, 1044 &m_compile_unit_infos[0], 1045 m_compile_unit_infos.size(), 1046 sizeof(CompileUnitInfo), 1047 (ComparisonFunction)SymbolContainsSymbolWithID); 1048 } 1049 1050 if (oso_idx_ptr) 1051 { 1052 if (comp_unit_info != NULL) 1053 *oso_idx_ptr = comp_unit_info - &m_compile_unit_infos[0]; 1054 else 1055 *oso_idx_ptr = UINT32_MAX; 1056 } 1057 return comp_unit_info; 1058 } 1059 1060 static void 1061 RemoveFunctionsWithModuleNotEqualTo (const ModuleSP &module_sp, SymbolContextList &sc_list, uint32_t start_idx) 1062 { 1063 // We found functions in .o files. Not all functions in the .o files 1064 // will have made it into the final output file. The ones that did 1065 // make it into the final output file will have a section whose module 1066 // matches the module from the ObjectFile for this SymbolFile. When 1067 // the modules don't match, then we have something that was in a 1068 // .o file, but doesn't map to anything in the final executable. 1069 uint32_t i=start_idx; 1070 while (i < sc_list.GetSize()) 1071 { 1072 SymbolContext sc; 1073 sc_list.GetContextAtIndex(i, sc); 1074 if (sc.function) 1075 { 1076 const SectionSP section_sp (sc.function->GetAddressRange().GetBaseAddress().GetSection()); 1077 if (section_sp->GetModule() != module_sp) 1078 { 1079 sc_list.RemoveContextAtIndex(i); 1080 continue; 1081 } 1082 } 1083 ++i; 1084 } 1085 } 1086 1087 uint32_t 1088 SymbolFileDWARFDebugMap::FindFunctions(const ConstString &name, 1089 const CompilerDeclContext *parent_decl_ctx, 1090 uint32_t name_type_mask, 1091 bool include_inlines, 1092 bool append, 1093 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, parent_decl_ctx, 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 uint32_t 1118 SymbolFileDWARFDebugMap::FindFunctions (const RegularExpression& regex, bool include_inlines, bool append, SymbolContextList& sc_list) 1119 { 1120 Timer scoped_timer (__PRETTY_FUNCTION__, 1121 "SymbolFileDWARFDebugMap::FindFunctions (regex = '%s')", 1122 regex.GetText()); 1123 1124 uint32_t initial_size = 0; 1125 if (append) 1126 initial_size = sc_list.GetSize(); 1127 else 1128 sc_list.Clear(); 1129 1130 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1131 uint32_t sc_idx = sc_list.GetSize(); 1132 1133 if (oso_dwarf->FindFunctions(regex, include_inlines, true, sc_list)) 1134 { 1135 RemoveFunctionsWithModuleNotEqualTo (m_obj_file->GetModule(), sc_list, sc_idx); 1136 } 1137 return false; 1138 }); 1139 1140 return sc_list.GetSize() - initial_size; 1141 } 1142 1143 size_t 1144 SymbolFileDWARFDebugMap::GetTypes (SymbolContextScope *sc_scope, 1145 uint32_t type_mask, 1146 TypeList &type_list) 1147 { 1148 Timer scoped_timer (__PRETTY_FUNCTION__, 1149 "SymbolFileDWARFDebugMap::GetTypes (type_mask = 0x%8.8x)", 1150 type_mask); 1151 1152 uint32_t initial_size = type_list.GetSize(); 1153 SymbolFileDWARF *oso_dwarf = NULL; 1154 if (sc_scope) 1155 { 1156 SymbolContext sc; 1157 sc_scope->CalculateSymbolContext(&sc); 1158 1159 CompileUnitInfo *cu_info = GetCompUnitInfo (sc); 1160 if (cu_info) 1161 { 1162 oso_dwarf = GetSymbolFileByCompUnitInfo (cu_info); 1163 if (oso_dwarf) 1164 oso_dwarf->GetTypes (sc_scope, type_mask, type_list); 1165 } 1166 } 1167 else 1168 { 1169 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1170 oso_dwarf->GetTypes (sc_scope, type_mask, type_list); 1171 return false; 1172 }); 1173 } 1174 return type_list.GetSize() - initial_size; 1175 } 1176 1177 TypeSP 1178 SymbolFileDWARFDebugMap::FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &die_decl_ctx) 1179 { 1180 TypeSP type_sp; 1181 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1182 type_sp = oso_dwarf->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); 1183 return ((bool)type_sp); 1184 }); 1185 return type_sp; 1186 } 1187 1188 bool 1189 SymbolFileDWARFDebugMap::Supports_DW_AT_APPLE_objc_complete_type (SymbolFileDWARF *skip_dwarf_oso) 1190 { 1191 if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate) 1192 { 1193 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo; 1194 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1195 if (skip_dwarf_oso != oso_dwarf && oso_dwarf->Supports_DW_AT_APPLE_objc_complete_type(NULL)) 1196 { 1197 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; 1198 return true; 1199 } 1200 return false; 1201 }); 1202 } 1203 return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes; 1204 } 1205 1206 TypeSP 1207 SymbolFileDWARFDebugMap::FindCompleteObjCDefinitionTypeForDIE (const DWARFDIE &die, 1208 const ConstString &type_name, 1209 bool must_be_implementation) 1210 { 1211 // If we have a debug map, we will have an Objective C symbol whose name is 1212 // the type name and whose type is eSymbolTypeObjCClass. If we can find that 1213 // symbol and find its containing parent, we can locate the .o file that will 1214 // contain the implementation definition since it will be scoped inside the N_SO 1215 // and we can then locate the SymbolFileDWARF that corresponds to that N_SO. 1216 SymbolFileDWARF *oso_dwarf = NULL; 1217 TypeSP type_sp; 1218 ObjectFile *module_objfile = m_obj_file->GetModule()->GetObjectFile(); 1219 if (module_objfile) 1220 { 1221 Symtab *symtab = module_objfile->GetSymtab(); 1222 if (symtab) 1223 { 1224 Symbol *objc_class_symbol = symtab->FindFirstSymbolWithNameAndType(type_name, eSymbolTypeObjCClass, Symtab::eDebugAny, Symtab::eVisibilityAny); 1225 if (objc_class_symbol) 1226 { 1227 // Get the N_SO symbol that contains the objective C class symbol as this 1228 // should be the .o file that contains the real definition... 1229 const Symbol *source_file_symbol = symtab->GetParent(objc_class_symbol); 1230 1231 if (source_file_symbol && source_file_symbol->GetType() == eSymbolTypeSourceFile) 1232 { 1233 const uint32_t source_file_symbol_idx = symtab->GetIndexForSymbol(source_file_symbol); 1234 if (source_file_symbol_idx != UINT32_MAX) 1235 { 1236 CompileUnitInfo *compile_unit_info = GetCompileUnitInfoForSymbolWithIndex (source_file_symbol_idx, NULL); 1237 if (compile_unit_info) 1238 { 1239 oso_dwarf = GetSymbolFileByCompUnitInfo (compile_unit_info); 1240 if (oso_dwarf) 1241 { 1242 TypeSP type_sp (oso_dwarf->FindCompleteObjCDefinitionTypeForDIE (die, type_name, must_be_implementation)); 1243 if (type_sp) 1244 { 1245 return type_sp; 1246 } 1247 } 1248 } 1249 } 1250 } 1251 } 1252 } 1253 } 1254 1255 // Only search all .o files for the definition if we don't need the implementation 1256 // because otherwise, with a valid debug map we should have the ObjC class symbol and 1257 // the code above should have found it. 1258 if (must_be_implementation == false) 1259 { 1260 TypeSP type_sp; 1261 1262 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1263 type_sp = oso_dwarf->FindCompleteObjCDefinitionTypeForDIE (die, type_name, must_be_implementation); 1264 return (bool)type_sp; 1265 }); 1266 1267 return type_sp; 1268 } 1269 return TypeSP(); 1270 } 1271 1272 uint32_t 1273 SymbolFileDWARFDebugMap::FindTypes 1274 ( 1275 const SymbolContext& sc, 1276 const ConstString &name, 1277 const CompilerDeclContext *parent_decl_ctx, 1278 bool append, 1279 uint32_t max_matches, 1280 llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files, 1281 TypeMap& types 1282 ) 1283 { 1284 if (!append) 1285 types.Clear(); 1286 1287 const uint32_t initial_types_size = types.GetSize(); 1288 SymbolFileDWARF *oso_dwarf; 1289 1290 if (sc.comp_unit) 1291 { 1292 oso_dwarf = GetSymbolFile (sc); 1293 if (oso_dwarf) 1294 return oso_dwarf->FindTypes (sc, name, parent_decl_ctx, append, max_matches, searched_symbol_files, types); 1295 } 1296 else 1297 { 1298 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1299 oso_dwarf->FindTypes (sc, name, parent_decl_ctx, append, max_matches, searched_symbol_files, types); 1300 if (types.GetSize() >= max_matches) 1301 return true; 1302 else 1303 return false; 1304 }); 1305 } 1306 1307 return types.GetSize() - initial_types_size; 1308 } 1309 1310 // 1311 //uint32_t 1312 //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) 1313 //{ 1314 // SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 1315 // if (oso_dwarf) 1316 // return oso_dwarf->FindTypes (sc, regex, append, max_matches, encoding, udt_uid, types); 1317 // return 0; 1318 //} 1319 1320 1321 CompilerDeclContext 1322 SymbolFileDWARFDebugMap::FindNamespace (const lldb_private::SymbolContext& sc, 1323 const lldb_private::ConstString &name, 1324 const CompilerDeclContext *parent_decl_ctx) 1325 { 1326 CompilerDeclContext matching_namespace; 1327 SymbolFileDWARF *oso_dwarf; 1328 1329 if (sc.comp_unit) 1330 { 1331 oso_dwarf = GetSymbolFile (sc); 1332 if (oso_dwarf) 1333 matching_namespace = oso_dwarf->FindNamespace (sc, name, parent_decl_ctx); 1334 } 1335 else 1336 { 1337 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1338 matching_namespace = oso_dwarf->FindNamespace (sc, name, parent_decl_ctx); 1339 1340 return (bool)matching_namespace; 1341 }); 1342 } 1343 1344 return matching_namespace; 1345 } 1346 1347 //------------------------------------------------------------------ 1348 // PluginInterface protocol 1349 //------------------------------------------------------------------ 1350 lldb_private::ConstString 1351 SymbolFileDWARFDebugMap::GetPluginName() 1352 { 1353 return GetPluginNameStatic(); 1354 } 1355 1356 uint32_t 1357 SymbolFileDWARFDebugMap::GetPluginVersion() 1358 { 1359 return 1; 1360 } 1361 1362 lldb::CompUnitSP 1363 SymbolFileDWARFDebugMap::GetCompileUnit (SymbolFileDWARF *oso_dwarf) 1364 { 1365 if (oso_dwarf) 1366 { 1367 const uint32_t cu_count = GetNumCompileUnits(); 1368 for (uint32_t cu_idx=0; cu_idx<cu_count; ++cu_idx) 1369 { 1370 SymbolFileDWARF *oso_symfile = GetSymbolFileByCompUnitInfo (&m_compile_unit_infos[cu_idx]); 1371 if (oso_symfile == oso_dwarf) 1372 { 1373 if (!m_compile_unit_infos[cu_idx].compile_unit_sp) 1374 m_compile_unit_infos[cu_idx].compile_unit_sp = ParseCompileUnitAtIndex (cu_idx); 1375 1376 return m_compile_unit_infos[cu_idx].compile_unit_sp; 1377 } 1378 } 1379 } 1380 assert(!"this shouldn't happen"); 1381 return lldb::CompUnitSP(); 1382 } 1383 1384 SymbolFileDWARFDebugMap::CompileUnitInfo * 1385 SymbolFileDWARFDebugMap::GetCompileUnitInfo (SymbolFileDWARF *oso_dwarf) 1386 { 1387 if (oso_dwarf) 1388 { 1389 const uint32_t cu_count = GetNumCompileUnits(); 1390 for (uint32_t cu_idx=0; cu_idx<cu_count; ++cu_idx) 1391 { 1392 SymbolFileDWARF *oso_symfile = GetSymbolFileByCompUnitInfo (&m_compile_unit_infos[cu_idx]); 1393 if (oso_symfile == oso_dwarf) 1394 { 1395 return &m_compile_unit_infos[cu_idx]; 1396 } 1397 } 1398 } 1399 return NULL; 1400 } 1401 1402 void 1403 SymbolFileDWARFDebugMap::SetCompileUnit (SymbolFileDWARF *oso_dwarf, const CompUnitSP &cu_sp) 1404 { 1405 if (oso_dwarf) 1406 { 1407 const uint32_t cu_count = GetNumCompileUnits(); 1408 for (uint32_t cu_idx=0; cu_idx<cu_count; ++cu_idx) 1409 { 1410 SymbolFileDWARF *oso_symfile = GetSymbolFileByCompUnitInfo (&m_compile_unit_infos[cu_idx]); 1411 if (oso_symfile == oso_dwarf) 1412 { 1413 if (m_compile_unit_infos[cu_idx].compile_unit_sp) 1414 { 1415 assert (m_compile_unit_infos[cu_idx].compile_unit_sp.get() == cu_sp.get()); 1416 } 1417 else 1418 { 1419 m_compile_unit_infos[cu_idx].compile_unit_sp = cu_sp; 1420 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp); 1421 } 1422 } 1423 } 1424 } 1425 } 1426 1427 CompilerDeclContext 1428 SymbolFileDWARFDebugMap::GetDeclContextForUID (lldb::user_id_t type_uid) 1429 { 1430 const uint64_t oso_idx = GetOSOIndexFromUserID (type_uid); 1431 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 1432 if (oso_dwarf) 1433 return oso_dwarf->GetDeclContextForUID (type_uid); 1434 return CompilerDeclContext(); 1435 } 1436 1437 CompilerDeclContext 1438 SymbolFileDWARFDebugMap::GetDeclContextContainingUID (lldb::user_id_t type_uid) 1439 { 1440 const uint64_t oso_idx = GetOSOIndexFromUserID (type_uid); 1441 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 1442 if (oso_dwarf) 1443 return oso_dwarf->GetDeclContextContainingUID (type_uid); 1444 return CompilerDeclContext(); 1445 } 1446 1447 void 1448 SymbolFileDWARFDebugMap::ParseDeclsForContext (lldb_private::CompilerDeclContext decl_ctx) 1449 { 1450 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1451 oso_dwarf->ParseDeclsForContext (decl_ctx); 1452 return true; // Keep iterating 1453 }); 1454 } 1455 1456 bool 1457 SymbolFileDWARFDebugMap::AddOSOFileRange (CompileUnitInfo *cu_info, 1458 lldb::addr_t exe_file_addr, 1459 lldb::addr_t oso_file_addr, 1460 lldb::addr_t oso_byte_size) 1461 { 1462 const uint32_t debug_map_idx = m_debug_map.FindEntryIndexThatContains(exe_file_addr); 1463 if (debug_map_idx != UINT32_MAX) 1464 { 1465 DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains(exe_file_addr); 1466 debug_map_entry->data.SetOSOFileAddress(oso_file_addr); 1467 cu_info->file_range_map.Append(FileRangeMap::Entry(oso_file_addr, oso_byte_size, exe_file_addr)); 1468 return true; 1469 } 1470 return false; 1471 } 1472 1473 void 1474 SymbolFileDWARFDebugMap::FinalizeOSOFileRanges (CompileUnitInfo *cu_info) 1475 { 1476 cu_info->file_range_map.Sort(); 1477 #if defined(DEBUG_OSO_DMAP) 1478 const FileRangeMap &oso_file_range_map = cu_info->GetFileRangeMap(this); 1479 const size_t n = oso_file_range_map.GetSize(); 1480 printf ("SymbolFileDWARFDebugMap::FinalizeOSOFileRanges (cu_info = %p) %s\n", 1481 cu_info, 1482 cu_info->oso_sp->module_sp->GetFileSpec().GetPath().c_str()); 1483 for (size_t i=0; i<n; ++i) 1484 { 1485 const FileRangeMap::Entry &entry = oso_file_range_map.GetEntryRef(i); 1486 printf ("oso [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ") ==> exe [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ")\n", 1487 entry.GetRangeBase(), entry.GetRangeEnd(), 1488 entry.data, entry.data + entry.GetByteSize()); 1489 } 1490 #endif 1491 } 1492 1493 lldb::addr_t 1494 SymbolFileDWARFDebugMap::LinkOSOFileAddress (SymbolFileDWARF *oso_symfile, lldb::addr_t oso_file_addr) 1495 { 1496 CompileUnitInfo *cu_info = GetCompileUnitInfo (oso_symfile); 1497 if (cu_info) 1498 { 1499 const FileRangeMap::Entry *oso_range_entry = cu_info->GetFileRangeMap(this).FindEntryThatContains(oso_file_addr); 1500 if (oso_range_entry) 1501 { 1502 const DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains(oso_range_entry->data); 1503 if (debug_map_entry) 1504 { 1505 const lldb::addr_t offset = oso_file_addr - oso_range_entry->GetRangeBase(); 1506 const lldb::addr_t exe_file_addr = debug_map_entry->GetRangeBase() + offset; 1507 return exe_file_addr; 1508 } 1509 } 1510 } 1511 return LLDB_INVALID_ADDRESS; 1512 } 1513 1514 bool 1515 SymbolFileDWARFDebugMap::LinkOSOAddress (Address &addr) 1516 { 1517 // Make sure this address hasn't been fixed already 1518 Module *exe_module = GetObjectFile()->GetModule().get(); 1519 Module *addr_module = addr.GetModule().get(); 1520 if (addr_module == exe_module) 1521 return true; // Address is already in terms of the main executable module 1522 1523 CompileUnitInfo *cu_info = GetCompileUnitInfo (GetSymbolFileAsSymbolFileDWARF(addr_module->GetSymbolVendor()->GetSymbolFile())); 1524 if (cu_info) 1525 { 1526 const lldb::addr_t oso_file_addr = addr.GetFileAddress(); 1527 const FileRangeMap::Entry *oso_range_entry = cu_info->GetFileRangeMap(this).FindEntryThatContains(oso_file_addr); 1528 if (oso_range_entry) 1529 { 1530 const DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains(oso_range_entry->data); 1531 if (debug_map_entry) 1532 { 1533 const lldb::addr_t offset = oso_file_addr - oso_range_entry->GetRangeBase(); 1534 const lldb::addr_t exe_file_addr = debug_map_entry->GetRangeBase() + offset; 1535 return exe_module->ResolveFileAddress(exe_file_addr, addr); 1536 } 1537 } 1538 } 1539 return true; 1540 } 1541 1542 LineTable * 1543 SymbolFileDWARFDebugMap::LinkOSOLineTable (SymbolFileDWARF *oso_dwarf, LineTable *line_table) 1544 { 1545 CompileUnitInfo *cu_info = GetCompileUnitInfo (oso_dwarf); 1546 if (cu_info) 1547 return line_table->LinkLineTable(cu_info->GetFileRangeMap(this)); 1548 return NULL; 1549 } 1550 1551 size_t 1552 SymbolFileDWARFDebugMap::AddOSOARanges (SymbolFileDWARF* dwarf2Data, DWARFDebugAranges* debug_aranges) 1553 { 1554 size_t num_line_entries_added = 0; 1555 if (debug_aranges && dwarf2Data) 1556 { 1557 CompileUnitInfo *compile_unit_info = GetCompileUnitInfo(dwarf2Data); 1558 if (compile_unit_info) 1559 { 1560 const FileRangeMap &file_range_map = compile_unit_info->GetFileRangeMap(this); 1561 for (size_t idx = 0; 1562 idx < file_range_map.GetSize(); 1563 idx++) 1564 { 1565 const FileRangeMap::Entry* entry = file_range_map.GetEntryAtIndex(idx); 1566 if (entry) 1567 { 1568 debug_aranges->AppendRange(dwarf2Data->GetID(), entry->GetRangeBase(), entry->GetRangeEnd()); 1569 num_line_entries_added++; 1570 } 1571 } 1572 } 1573 } 1574 return num_line_entries_added; 1575 } 1576