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