SymbolFileDWARFDebugMap.cpp revision 288943
1//===-- SymbolFileDWARFDebugMap.cpp ----------------------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#include "SymbolFileDWARFDebugMap.h" 11 12#include "DWARFDebugAranges.h" 13 14#include "lldb/Core/RangeMap.h" 15#include "lldb/Core/Module.h" 16#include "lldb/Core/ModuleList.h" 17#include "lldb/Core/PluginManager.h" 18#include "lldb/Core/RegularExpression.h" 19#include "lldb/Core/Section.h" 20 21//#define DEBUG_OSO_DMAP // DO NOT CHECKIN WITH THIS NOT COMMENTED OUT 22#if defined(DEBUG_OSO_DMAP) 23#include "lldb/Core/StreamFile.h" 24#endif 25#include "lldb/Core/Timer.h" 26 27#include "lldb/Symbol/ClangExternalASTSourceCallbacks.h" 28#include "lldb/Symbol/CompileUnit.h" 29#include "lldb/Symbol/LineTable.h" 30#include "lldb/Symbol/ObjectFile.h" 31#include "lldb/Symbol/SymbolVendor.h" 32#include "lldb/Symbol/VariableList.h" 33 34#include "LogChannelDWARF.h" 35#include "SymbolFileDWARF.h" 36 37using namespace lldb; 38using namespace lldb_private; 39 40// Subclass lldb_private::Module so we can intercept the "Module::GetObjectFile()" 41// (so we can fixup the object file sections) and also for "Module::GetSymbolVendor()" 42// (so we can fixup the symbol file id. 43 44 45 46 47const SymbolFileDWARFDebugMap::FileRangeMap & 48SymbolFileDWARFDebugMap::CompileUnitInfo::GetFileRangeMap(SymbolFileDWARFDebugMap *exe_symfile) 49{ 50 if (file_range_map_valid) 51 return file_range_map; 52 53 file_range_map_valid = true; 54 55 Module *oso_module = exe_symfile->GetModuleByCompUnitInfo (this); 56 if (!oso_module) 57 return file_range_map; 58 59 ObjectFile *oso_objfile = oso_module->GetObjectFile(); 60 if (!oso_objfile) 61 return file_range_map; 62 63 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_MAP)); 64 if (log) 65 { 66 ConstString object_name (oso_module->GetObjectName()); 67 log->Printf("%p: SymbolFileDWARFDebugMap::CompileUnitInfo::GetFileRangeMap ('%s')", 68 static_cast<void*>(this), 69 oso_module->GetSpecificationDescription().c_str()); 70 } 71 72 std::vector<SymbolFileDWARFDebugMap::CompileUnitInfo *> cu_infos; 73 if (exe_symfile->GetCompUnitInfosForModule(oso_module, cu_infos)) 74 { 75 for (auto comp_unit_info : cu_infos) 76 { 77 Symtab *exe_symtab = exe_symfile->GetObjectFile()->GetSymtab(); 78 ModuleSP oso_module_sp (oso_objfile->GetModule()); 79 Symtab *oso_symtab = oso_objfile->GetSymtab(); 80 81 ///const uint32_t fun_resolve_flags = SymbolContext::Module | eSymbolContextCompUnit | eSymbolContextFunction; 82 //SectionList *oso_sections = oso_objfile->Sections(); 83 // Now we need to make sections that map from zero based object 84 // file addresses to where things ended up in the main executable. 85 86 assert (comp_unit_info->first_symbol_index != UINT32_MAX); 87 // End index is one past the last valid symbol index 88 const uint32_t oso_end_idx = comp_unit_info->last_symbol_index + 1; 89 for (uint32_t idx = comp_unit_info->first_symbol_index + 2; // Skip the N_SO and N_OSO 90 idx < oso_end_idx; 91 ++idx) 92 { 93 Symbol *exe_symbol = exe_symtab->SymbolAtIndex(idx); 94 if (exe_symbol) 95 { 96 if (exe_symbol->IsDebug() == false) 97 continue; 98 99 switch (exe_symbol->GetType()) 100 { 101 default: 102 break; 103 104 case eSymbolTypeCode: 105 { 106 // For each N_FUN, or function that we run into in the debug map 107 // we make a new section that we add to the sections found in the 108 // .o file. This new section has the file address set to what the 109 // addresses are in the .o file, and the load address is adjusted 110 // to match where it ended up in the final executable! We do this 111 // before we parse any dwarf info so that when it goes get parsed 112 // all section/offset addresses that get registered will resolve 113 // correctly to the new addresses in the main executable. 114 115 // First we find the original symbol in the .o file's symbol table 116 Symbol *oso_fun_symbol = oso_symtab->FindFirstSymbolWithNameAndType (exe_symbol->GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled), 117 eSymbolTypeCode, 118 Symtab::eDebugNo, 119 Symtab::eVisibilityAny); 120 if (oso_fun_symbol) 121 { 122 // Add the inverse OSO file address to debug map entry mapping 123 exe_symfile->AddOSOFileRange (this, 124 exe_symbol->GetAddressRef().GetFileAddress(), 125 oso_fun_symbol->GetAddressRef().GetFileAddress(), 126 std::min<addr_t>(exe_symbol->GetByteSize(), oso_fun_symbol->GetByteSize())); 127 128 } 129 } 130 break; 131 132 case eSymbolTypeData: 133 { 134 // For each N_GSYM we remap the address for the global by making 135 // a new section that we add to the sections found in the .o file. 136 // This new section has the file address set to what the 137 // addresses are in the .o file, and the load address is adjusted 138 // to match where it ended up in the final executable! We do this 139 // before we parse any dwarf info so that when it goes get parsed 140 // all section/offset addresses that get registered will resolve 141 // correctly to the new addresses in the main executable. We 142 // initially set the section size to be 1 byte, but will need to 143 // fix up these addresses further after all globals have been 144 // parsed to span the gaps, or we can find the global variable 145 // sizes from the DWARF info as we are parsing. 146 147 // Next we find the non-stab entry that corresponds to the N_GSYM in the .o file 148 Symbol *oso_gsym_symbol = oso_symtab->FindFirstSymbolWithNameAndType (exe_symbol->GetMangled().GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled), 149 eSymbolTypeData, 150 Symtab::eDebugNo, 151 Symtab::eVisibilityAny); 152 if (exe_symbol && oso_gsym_symbol && 153 exe_symbol->ValueIsAddress() && 154 oso_gsym_symbol->ValueIsAddress()) 155 { 156 // Add the inverse OSO file address to debug map entry mapping 157 exe_symfile->AddOSOFileRange (this, 158 exe_symbol->GetAddressRef().GetFileAddress(), 159 oso_gsym_symbol->GetAddressRef().GetFileAddress(), 160 std::min<addr_t>(exe_symbol->GetByteSize(), oso_gsym_symbol->GetByteSize())); 161 } 162 } 163 break; 164 } 165 } 166 } 167 168 exe_symfile->FinalizeOSOFileRanges (this); 169 // We don't need the symbols anymore for the .o files 170 oso_objfile->ClearSymtab(); 171 } 172 } 173 return file_range_map; 174} 175 176 177class DebugMapModule : public Module 178{ 179public: 180 DebugMapModule (const ModuleSP &exe_module_sp, 181 uint32_t cu_idx, 182 const FileSpec& file_spec, 183 const ArchSpec& arch, 184 const ConstString *object_name, 185 off_t object_offset, 186 const TimeValue *object_mod_time_ptr) : 187 Module (file_spec, arch, object_name, object_offset, object_mod_time_ptr), 188 m_exe_module_wp (exe_module_sp), 189 m_cu_idx (cu_idx) 190 { 191 } 192 193 virtual 194 ~DebugMapModule () 195 { 196 } 197 198 199 virtual SymbolVendor* 200 GetSymbolVendor(bool can_create = true, lldb_private::Stream *feedback_strm = NULL) 201 { 202 // Scope for locker 203 if (m_symfile_ap.get() || can_create == false) 204 return m_symfile_ap.get(); 205 206 ModuleSP exe_module_sp (m_exe_module_wp.lock()); 207 if (exe_module_sp) 208 { 209 // Now get the object file outside of a locking scope 210 ObjectFile *oso_objfile = GetObjectFile (); 211 if (oso_objfile) 212 { 213 Mutex::Locker locker (m_mutex); 214 SymbolVendor* symbol_vendor = Module::GetSymbolVendor(can_create, feedback_strm); 215 if (symbol_vendor) 216 { 217 // Set a pointer to this class to set our OSO DWARF file know 218 // that the DWARF is being used along with a debug map and that 219 // it will have the remapped sections that we do below. 220 SymbolFileDWARF *oso_symfile = SymbolFileDWARFDebugMap::GetSymbolFileAsSymbolFileDWARF(symbol_vendor->GetSymbolFile()); 221 222 if (!oso_symfile) 223 return NULL; 224 225 ObjectFile *exe_objfile = exe_module_sp->GetObjectFile(); 226 SymbolVendor *exe_sym_vendor = exe_module_sp->GetSymbolVendor(); 227 228 if (exe_objfile && exe_sym_vendor) 229 { 230 oso_symfile->SetDebugMapModule(exe_module_sp); 231 // Set the ID of the symbol file DWARF to the index of the OSO 232 // shifted left by 32 bits to provide a unique prefix for any 233 // UserID's that get created in the symbol file. 234 oso_symfile->SetID (((uint64_t)m_cu_idx + 1ull) << 32ull); 235 } 236 return symbol_vendor; 237 } 238 } 239 } 240 return NULL; 241 } 242 243protected: 244 ModuleWP m_exe_module_wp; 245 const uint32_t m_cu_idx; 246}; 247 248void 249SymbolFileDWARFDebugMap::Initialize() 250{ 251 PluginManager::RegisterPlugin (GetPluginNameStatic(), 252 GetPluginDescriptionStatic(), 253 CreateInstance); 254} 255 256void 257SymbolFileDWARFDebugMap::Terminate() 258{ 259 PluginManager::UnregisterPlugin (CreateInstance); 260} 261 262 263lldb_private::ConstString 264SymbolFileDWARFDebugMap::GetPluginNameStatic() 265{ 266 static ConstString g_name("dwarf-debugmap"); 267 return g_name; 268} 269 270const char * 271SymbolFileDWARFDebugMap::GetPluginDescriptionStatic() 272{ 273 return "DWARF and DWARF3 debug symbol file reader (debug map)."; 274} 275 276SymbolFile* 277SymbolFileDWARFDebugMap::CreateInstance (ObjectFile* obj_file) 278{ 279 return new SymbolFileDWARFDebugMap (obj_file); 280} 281 282 283SymbolFileDWARFDebugMap::SymbolFileDWARFDebugMap (ObjectFile* ofile) : 284 SymbolFile(ofile), 285 m_flags(), 286 m_compile_unit_infos(), 287 m_func_indexes(), 288 m_glob_indexes(), 289 m_supports_DW_AT_APPLE_objc_complete_type (eLazyBoolCalculate) 290{ 291} 292 293 294SymbolFileDWARFDebugMap::~SymbolFileDWARFDebugMap() 295{ 296} 297 298void 299SymbolFileDWARFDebugMap::InitializeObject() 300{ 301 // Install our external AST source callbacks so we can complete Clang types. 302 llvm::IntrusiveRefCntPtr<clang::ExternalASTSource> ast_source_ap ( 303 new ClangExternalASTSourceCallbacks (SymbolFileDWARFDebugMap::CompleteTagDecl, 304 SymbolFileDWARFDebugMap::CompleteObjCInterfaceDecl, 305 NULL, 306 SymbolFileDWARFDebugMap::LayoutRecordType, 307 this)); 308 309 GetClangASTContext().SetExternalSource (ast_source_ap); 310} 311 312void 313SymbolFileDWARFDebugMap::InitOSO() 314{ 315 if (m_flags.test(kHaveInitializedOSOs)) 316 return; 317 318 m_flags.set(kHaveInitializedOSOs); 319 320 // If the object file has been stripped, there is no sense in looking further 321 // as all of the debug symbols for the debug map will not be available 322 if (m_obj_file->IsStripped()) 323 return; 324 325 // Also make sure the file type is some sort of executable. Core files, debug 326 // info files (dSYM), object files (.o files), and stub libraries all can 327 switch (m_obj_file->GetType()) 328 { 329 case ObjectFile::eTypeInvalid: 330 case ObjectFile::eTypeCoreFile: 331 case ObjectFile::eTypeDebugInfo: 332 case ObjectFile::eTypeObjectFile: 333 case ObjectFile::eTypeStubLibrary: 334 case ObjectFile::eTypeUnknown: 335 case ObjectFile::eTypeJIT: 336 return; 337 338 case ObjectFile::eTypeExecutable: 339 case ObjectFile::eTypeDynamicLinker: 340 case ObjectFile::eTypeSharedLibrary: 341 break; 342 } 343 344 // In order to get the abilities of this plug-in, we look at the list of 345 // N_OSO entries (object files) from the symbol table and make sure that 346 // these files exist and also contain valid DWARF. If we get any of that 347 // then we return the abilities of the first N_OSO's DWARF. 348 349 Symtab* symtab = m_obj_file->GetSymtab(); 350 if (symtab) 351 { 352 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_MAP)); 353 354 std::vector<uint32_t> oso_indexes; 355 // When a mach-o symbol is encoded, the n_type field is encoded in bits 356 // 23:16, and the n_desc field is encoded in bits 15:0. 357 // 358 // To find all N_OSO entries that are part of the DWARF + debug map 359 // we find only object file symbols with the flags value as follows: 360 // bits 23:16 == 0x66 (N_OSO) 361 // bits 15: 0 == 0x0001 (specifies this is a debug map object file) 362 const uint32_t k_oso_symbol_flags_value = 0x660001u; 363 364 const uint32_t oso_index_count = symtab->AppendSymbolIndexesWithTypeAndFlagsValue(eSymbolTypeObjectFile, k_oso_symbol_flags_value, oso_indexes); 365 366 if (oso_index_count > 0) 367 { 368 symtab->AppendSymbolIndexesWithType (eSymbolTypeCode, Symtab::eDebugYes, Symtab::eVisibilityAny, m_func_indexes); 369 symtab->AppendSymbolIndexesWithType (eSymbolTypeData, Symtab::eDebugYes, Symtab::eVisibilityAny, m_glob_indexes); 370 371 symtab->SortSymbolIndexesByValue(m_func_indexes, true); 372 symtab->SortSymbolIndexesByValue(m_glob_indexes, true); 373 374 for (uint32_t sym_idx : m_func_indexes) 375 { 376 const Symbol *symbol = symtab->SymbolAtIndex(sym_idx); 377 lldb::addr_t file_addr = symbol->GetAddressRef().GetFileAddress(); 378 lldb::addr_t byte_size = symbol->GetByteSize(); 379 DebugMap::Entry debug_map_entry(file_addr, byte_size, OSOEntry(sym_idx, LLDB_INVALID_ADDRESS)); 380 m_debug_map.Append(debug_map_entry); 381 } 382 for (uint32_t sym_idx : m_glob_indexes) 383 { 384 const Symbol *symbol = symtab->SymbolAtIndex(sym_idx); 385 lldb::addr_t file_addr = symbol->GetAddressRef().GetFileAddress(); 386 lldb::addr_t byte_size = symbol->GetByteSize(); 387 DebugMap::Entry debug_map_entry(file_addr, byte_size, OSOEntry(sym_idx, LLDB_INVALID_ADDRESS)); 388 m_debug_map.Append(debug_map_entry); 389 } 390 m_debug_map.Sort(); 391 392 m_compile_unit_infos.resize(oso_index_count); 393 394 for (uint32_t i=0; i<oso_index_count; ++i) 395 { 396 const uint32_t so_idx = oso_indexes[i] - 1; 397 const uint32_t oso_idx = oso_indexes[i]; 398 const Symbol *so_symbol = symtab->SymbolAtIndex(so_idx); 399 const Symbol *oso_symbol = symtab->SymbolAtIndex(oso_idx); 400 if (so_symbol && 401 oso_symbol && 402 so_symbol->GetType() == eSymbolTypeSourceFile && 403 oso_symbol->GetType() == eSymbolTypeObjectFile) 404 { 405 m_compile_unit_infos[i].so_file.SetFile(so_symbol->GetName().AsCString(), false); 406 m_compile_unit_infos[i].oso_path = oso_symbol->GetName(); 407 TimeValue oso_mod_time; 408 oso_mod_time.OffsetWithSeconds(oso_symbol->GetIntegerValue(0)); 409 m_compile_unit_infos[i].oso_mod_time = oso_mod_time; 410 uint32_t sibling_idx = so_symbol->GetSiblingIndex(); 411 // The sibling index can't be less that or equal to the current index "i" 412 if (sibling_idx == UINT32_MAX) 413 { 414 m_obj_file->GetModule()->ReportError ("N_SO in symbol with UID %u has invalid sibling in debug map, please file a bug and attach the binary listed in this error", so_symbol->GetID()); 415 } 416 else 417 { 418 const Symbol* last_symbol = symtab->SymbolAtIndex (sibling_idx - 1); 419 m_compile_unit_infos[i].first_symbol_index = so_idx; 420 m_compile_unit_infos[i].last_symbol_index = sibling_idx - 1; 421 m_compile_unit_infos[i].first_symbol_id = so_symbol->GetID(); 422 m_compile_unit_infos[i].last_symbol_id = last_symbol->GetID(); 423 424 if (log) 425 log->Printf("Initialized OSO 0x%8.8x: file=%s", i, oso_symbol->GetName().GetCString()); 426 } 427 } 428 else 429 { 430 if (oso_symbol == NULL) 431 m_obj_file->GetModule()->ReportError ("N_OSO symbol[%u] can't be found, please file a bug and attach the binary listed in this error", oso_idx); 432 else if (so_symbol == NULL) 433 m_obj_file->GetModule()->ReportError ("N_SO not found for N_OSO symbol[%u], please file a bug and attach the binary listed in this error", oso_idx); 434 else if (so_symbol->GetType() != eSymbolTypeSourceFile) 435 m_obj_file->GetModule()->ReportError ("N_SO has incorrect symbol type (%u) for N_OSO symbol[%u], please file a bug and attach the binary listed in this error", so_symbol->GetType(), oso_idx); 436 else if (oso_symbol->GetType() != eSymbolTypeSourceFile) 437 m_obj_file->GetModule()->ReportError ("N_OSO has incorrect symbol type (%u) for N_OSO symbol[%u], please file a bug and attach the binary listed in this error", oso_symbol->GetType(), oso_idx); 438 } 439 } 440 } 441 } 442} 443 444Module * 445SymbolFileDWARFDebugMap::GetModuleByOSOIndex (uint32_t oso_idx) 446{ 447 const uint32_t cu_count = GetNumCompileUnits(); 448 if (oso_idx < cu_count) 449 return GetModuleByCompUnitInfo (&m_compile_unit_infos[oso_idx]); 450 return NULL; 451} 452 453Module * 454SymbolFileDWARFDebugMap::GetModuleByCompUnitInfo (CompileUnitInfo *comp_unit_info) 455{ 456 if (!comp_unit_info->oso_sp) 457 { 458 auto pos = m_oso_map.find (comp_unit_info->oso_path); 459 if (pos != m_oso_map.end()) 460 { 461 comp_unit_info->oso_sp = pos->second; 462 } 463 else 464 { 465 ObjectFile *obj_file = GetObjectFile(); 466 comp_unit_info->oso_sp.reset (new OSOInfo()); 467 m_oso_map[comp_unit_info->oso_path] = comp_unit_info->oso_sp; 468 const char *oso_path = comp_unit_info->oso_path.GetCString(); 469 FileSpec oso_file (oso_path, false); 470 ConstString oso_object; 471 if (oso_file.Exists()) 472 { 473 TimeValue oso_mod_time (oso_file.GetModificationTime()); 474 if (oso_mod_time != comp_unit_info->oso_mod_time) 475 { 476 obj_file->GetModule()->ReportError ("debug map object file '%s' has changed (actual time is 0x%" PRIx64 ", debug map time is 0x%" PRIx64 ") since this executable was linked, file will be ignored", 477 oso_file.GetPath().c_str(), 478 oso_mod_time.GetAsSecondsSinceJan1_1970(), 479 comp_unit_info->oso_mod_time.GetAsSecondsSinceJan1_1970()); 480 return NULL; 481 } 482 483 } 484 else 485 { 486 const bool must_exist = true; 487 488 if (!ObjectFile::SplitArchivePathWithObject (oso_path, 489 oso_file, 490 oso_object, 491 must_exist)) 492 { 493 return NULL; 494 } 495 } 496 // Always create a new module for .o files. Why? Because we 497 // use the debug map, to add new sections to each .o file and 498 // even though a .o file might not have changed, the sections 499 // that get added to the .o file can change. 500 ArchSpec oso_arch; 501 // Only adopt the architecture from the module (not the vendor or OS) 502 // since .o files for "i386-apple-ios" will historically show up as "i386-apple-macosx" 503 // due to the lack of a LC_VERSION_MIN_MACOSX or LC_VERSION_MIN_IPHONEOS 504 // load command... 505 oso_arch.SetTriple(m_obj_file->GetModule()->GetArchitecture().GetTriple().getArchName().str().c_str()); 506 comp_unit_info->oso_sp->module_sp.reset (new DebugMapModule (obj_file->GetModule(), 507 GetCompUnitInfoIndex(comp_unit_info), 508 oso_file, 509 oso_arch, 510 oso_object ? &oso_object : NULL, 511 0, 512 oso_object ? &comp_unit_info->oso_mod_time : NULL)); 513 } 514 } 515 if (comp_unit_info->oso_sp) 516 return comp_unit_info->oso_sp->module_sp.get(); 517 return NULL; 518} 519 520 521bool 522SymbolFileDWARFDebugMap::GetFileSpecForSO (uint32_t oso_idx, FileSpec &file_spec) 523{ 524 if (oso_idx < m_compile_unit_infos.size()) 525 { 526 if (m_compile_unit_infos[oso_idx].so_file) 527 { 528 file_spec = m_compile_unit_infos[oso_idx].so_file; 529 return true; 530 } 531 } 532 return false; 533} 534 535 536 537ObjectFile * 538SymbolFileDWARFDebugMap::GetObjectFileByOSOIndex (uint32_t oso_idx) 539{ 540 Module *oso_module = GetModuleByOSOIndex (oso_idx); 541 if (oso_module) 542 return oso_module->GetObjectFile(); 543 return NULL; 544} 545 546SymbolFileDWARF * 547SymbolFileDWARFDebugMap::GetSymbolFile (const SymbolContext& sc) 548{ 549 CompileUnitInfo *comp_unit_info = GetCompUnitInfo (sc); 550 if (comp_unit_info) 551 return GetSymbolFileByCompUnitInfo (comp_unit_info); 552 return NULL; 553} 554 555ObjectFile * 556SymbolFileDWARFDebugMap::GetObjectFileByCompUnitInfo (CompileUnitInfo *comp_unit_info) 557{ 558 Module *oso_module = GetModuleByCompUnitInfo (comp_unit_info); 559 if (oso_module) 560 return oso_module->GetObjectFile(); 561 return NULL; 562} 563 564 565uint32_t 566SymbolFileDWARFDebugMap::GetCompUnitInfoIndex (const CompileUnitInfo *comp_unit_info) 567{ 568 if (!m_compile_unit_infos.empty()) 569 { 570 const CompileUnitInfo *first_comp_unit_info = &m_compile_unit_infos.front(); 571 const CompileUnitInfo *last_comp_unit_info = &m_compile_unit_infos.back(); 572 if (first_comp_unit_info <= comp_unit_info && comp_unit_info <= last_comp_unit_info) 573 return comp_unit_info - first_comp_unit_info; 574 } 575 return UINT32_MAX; 576} 577 578SymbolFileDWARF * 579SymbolFileDWARFDebugMap::GetSymbolFileByOSOIndex (uint32_t oso_idx) 580{ 581 if (oso_idx < m_compile_unit_infos.size()) 582 return GetSymbolFileByCompUnitInfo (&m_compile_unit_infos[oso_idx]); 583 return NULL; 584} 585 586SymbolFileDWARF * 587SymbolFileDWARFDebugMap::GetSymbolFileAsSymbolFileDWARF (SymbolFile *sym_file) 588{ 589 if (sym_file && sym_file->GetPluginName() == SymbolFileDWARF::GetPluginNameStatic()) 590 return (SymbolFileDWARF *)sym_file; 591 return NULL; 592} 593 594SymbolFileDWARF * 595SymbolFileDWARFDebugMap::GetSymbolFileByCompUnitInfo (CompileUnitInfo *comp_unit_info) 596{ 597 Module *oso_module = GetModuleByCompUnitInfo (comp_unit_info); 598 if (oso_module) 599 { 600 SymbolVendor *sym_vendor = oso_module->GetSymbolVendor(); 601 if (sym_vendor) 602 return GetSymbolFileAsSymbolFileDWARF (sym_vendor->GetSymbolFile()); 603 } 604 return NULL; 605} 606 607uint32_t 608SymbolFileDWARFDebugMap::CalculateAbilities () 609{ 610 // In order to get the abilities of this plug-in, we look at the list of 611 // N_OSO entries (object files) from the symbol table and make sure that 612 // these files exist and also contain valid DWARF. If we get any of that 613 // then we return the abilities of the first N_OSO's DWARF. 614 615 const uint32_t oso_index_count = GetNumCompileUnits(); 616 if (oso_index_count > 0) 617 { 618 InitOSO(); 619 if (!m_compile_unit_infos.empty()) 620 { 621 return SymbolFile::CompileUnits | 622 SymbolFile::Functions | 623 SymbolFile::Blocks | 624 SymbolFile::GlobalVariables | 625 SymbolFile::LocalVariables | 626 SymbolFile::VariableTypes | 627 SymbolFile::LineTables ; 628 } 629 } 630 return 0; 631} 632 633uint32_t 634SymbolFileDWARFDebugMap::GetNumCompileUnits() 635{ 636 InitOSO (); 637 return m_compile_unit_infos.size(); 638} 639 640 641CompUnitSP 642SymbolFileDWARFDebugMap::ParseCompileUnitAtIndex(uint32_t cu_idx) 643{ 644 CompUnitSP comp_unit_sp; 645 const uint32_t cu_count = GetNumCompileUnits(); 646 647 if (cu_idx < cu_count) 648 { 649 Module *oso_module = GetModuleByCompUnitInfo (&m_compile_unit_infos[cu_idx]); 650 if (oso_module) 651 { 652 FileSpec so_file_spec; 653 if (GetFileSpecForSO (cu_idx, so_file_spec)) 654 { 655 // User zero as the ID to match the compile unit at offset 656 // zero in each .o file since each .o file can only have 657 // one compile unit for now. 658 lldb::user_id_t cu_id = 0; 659 m_compile_unit_infos[cu_idx].compile_unit_sp.reset(new CompileUnit (m_obj_file->GetModule(), 660 NULL, 661 so_file_spec, 662 cu_id, 663 eLanguageTypeUnknown)); 664 665 if (m_compile_unit_infos[cu_idx].compile_unit_sp) 666 { 667 // Let our symbol vendor know about this compile unit 668 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex (cu_idx, m_compile_unit_infos[cu_idx].compile_unit_sp); 669 } 670 } 671 } 672 comp_unit_sp = m_compile_unit_infos[cu_idx].compile_unit_sp; 673 } 674 675 return comp_unit_sp; 676} 677 678SymbolFileDWARFDebugMap::CompileUnitInfo * 679SymbolFileDWARFDebugMap::GetCompUnitInfo (const SymbolContext& sc) 680{ 681 const uint32_t cu_count = GetNumCompileUnits(); 682 for (uint32_t i=0; i<cu_count; ++i) 683 { 684 if (sc.comp_unit == m_compile_unit_infos[i].compile_unit_sp.get()) 685 return &m_compile_unit_infos[i]; 686 } 687 return NULL; 688} 689 690 691size_t 692SymbolFileDWARFDebugMap::GetCompUnitInfosForModule (const lldb_private::Module *module, std::vector<CompileUnitInfo *>& cu_infos) 693{ 694 const uint32_t cu_count = GetNumCompileUnits(); 695 for (uint32_t i=0; i<cu_count; ++i) 696 { 697 if (module == GetModuleByCompUnitInfo (&m_compile_unit_infos[i])) 698 cu_infos.push_back (&m_compile_unit_infos[i]); 699 } 700 return cu_infos.size(); 701} 702 703lldb::LanguageType 704SymbolFileDWARFDebugMap::ParseCompileUnitLanguage (const SymbolContext& sc) 705{ 706 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 707 if (oso_dwarf) 708 return oso_dwarf->ParseCompileUnitLanguage (sc); 709 return eLanguageTypeUnknown; 710} 711 712size_t 713SymbolFileDWARFDebugMap::ParseCompileUnitFunctions (const SymbolContext& sc) 714{ 715 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 716 if (oso_dwarf) 717 return oso_dwarf->ParseCompileUnitFunctions (sc); 718 return 0; 719} 720 721bool 722SymbolFileDWARFDebugMap::ParseCompileUnitLineTable (const SymbolContext& sc) 723{ 724 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 725 if (oso_dwarf) 726 return oso_dwarf->ParseCompileUnitLineTable (sc); 727 return false; 728} 729 730bool 731SymbolFileDWARFDebugMap::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList &support_files) 732{ 733 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 734 if (oso_dwarf) 735 return oso_dwarf->ParseCompileUnitSupportFiles (sc, support_files); 736 return false; 737} 738 739bool 740SymbolFileDWARFDebugMap::ParseImportedModules (const SymbolContext &sc, std::vector<ConstString> &imported_modules) 741{ 742 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 743 if (oso_dwarf) 744 return oso_dwarf->ParseImportedModules(sc, imported_modules); 745 return false; 746} 747 748size_t 749SymbolFileDWARFDebugMap::ParseFunctionBlocks (const SymbolContext& sc) 750{ 751 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 752 if (oso_dwarf) 753 return oso_dwarf->ParseFunctionBlocks (sc); 754 return 0; 755} 756 757 758size_t 759SymbolFileDWARFDebugMap::ParseTypes (const SymbolContext& sc) 760{ 761 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 762 if (oso_dwarf) 763 return oso_dwarf->ParseTypes (sc); 764 return 0; 765} 766 767 768size_t 769SymbolFileDWARFDebugMap::ParseVariablesForContext (const SymbolContext& sc) 770{ 771 SymbolFileDWARF *oso_dwarf = GetSymbolFile (sc); 772 if (oso_dwarf) 773 return oso_dwarf->ParseVariablesForContext (sc); 774 return 0; 775} 776 777 778 779Type* 780SymbolFileDWARFDebugMap::ResolveTypeUID(lldb::user_id_t type_uid) 781{ 782 const uint64_t oso_idx = GetOSOIndexFromUserID (type_uid); 783 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 784 if (oso_dwarf) 785 return oso_dwarf->ResolveTypeUID (type_uid); 786 return NULL; 787} 788 789bool 790SymbolFileDWARFDebugMap::ResolveClangOpaqueTypeDefinition (ClangASTType& clang_type) 791{ 792 // We have a struct/union/class/enum that needs to be fully resolved. 793 return false; 794} 795 796uint32_t 797SymbolFileDWARFDebugMap::ResolveSymbolContext (const Address& exe_so_addr, uint32_t resolve_scope, SymbolContext& sc) 798{ 799 uint32_t resolved_flags = 0; 800 Symtab* symtab = m_obj_file->GetSymtab(); 801 if (symtab) 802 { 803 const addr_t exe_file_addr = exe_so_addr.GetFileAddress(); 804 805 const DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains (exe_file_addr); 806 if (debug_map_entry) 807 { 808 809 sc.symbol = symtab->SymbolAtIndex(debug_map_entry->data.GetExeSymbolIndex()); 810 811 if (sc.symbol != NULL) 812 { 813 resolved_flags |= eSymbolContextSymbol; 814 815 uint32_t oso_idx = 0; 816 CompileUnitInfo* comp_unit_info = GetCompileUnitInfoForSymbolWithID (sc.symbol->GetID(), &oso_idx); 817 if (comp_unit_info) 818 { 819 comp_unit_info->GetFileRangeMap(this); 820 Module *oso_module = GetModuleByCompUnitInfo (comp_unit_info); 821 if (oso_module) 822 { 823 lldb::addr_t oso_file_addr = exe_file_addr - debug_map_entry->GetRangeBase() + debug_map_entry->data.GetOSOFileAddress(); 824 Address oso_so_addr; 825 if (oso_module->ResolveFileAddress(oso_file_addr, oso_so_addr)) 826 { 827 resolved_flags |= oso_module->GetSymbolVendor()->ResolveSymbolContext (oso_so_addr, resolve_scope, sc); 828 } 829 } 830 } 831 } 832 } 833 } 834 return resolved_flags; 835} 836 837 838uint32_t 839SymbolFileDWARFDebugMap::ResolveSymbolContext (const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list) 840{ 841 const uint32_t initial = sc_list.GetSize(); 842 const uint32_t cu_count = GetNumCompileUnits(); 843 844 for (uint32_t i=0; i<cu_count; ++i) 845 { 846 // If we are checking for inlines, then we need to look through all 847 // compile units no matter if "file_spec" matches. 848 bool resolve = check_inlines; 849 850 if (!resolve) 851 { 852 FileSpec so_file_spec; 853 if (GetFileSpecForSO (i, so_file_spec)) 854 { 855 // Match the full path if the incoming file_spec has a directory (not just a basename) 856 const bool full_match = (bool)file_spec.GetDirectory(); 857 resolve = FileSpec::Equal (file_spec, so_file_spec, full_match); 858 } 859 } 860 if (resolve) 861 { 862 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (i); 863 if (oso_dwarf) 864 oso_dwarf->ResolveSymbolContext(file_spec, line, check_inlines, resolve_scope, sc_list); 865 } 866 } 867 return sc_list.GetSize() - initial; 868} 869 870uint32_t 871SymbolFileDWARFDebugMap::PrivateFindGlobalVariables 872( 873 const ConstString &name, 874 const ClangNamespaceDecl *namespace_decl, 875 const std::vector<uint32_t> &indexes, // Indexes into the symbol table that match "name" 876 uint32_t max_matches, 877 VariableList& variables 878) 879{ 880 const uint32_t original_size = variables.GetSize(); 881 const size_t match_count = indexes.size(); 882 for (size_t i=0; i<match_count; ++i) 883 { 884 uint32_t oso_idx; 885 CompileUnitInfo* comp_unit_info = GetCompileUnitInfoForSymbolWithIndex (indexes[i], &oso_idx); 886 if (comp_unit_info) 887 { 888 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 889 if (oso_dwarf) 890 { 891 if (oso_dwarf->FindGlobalVariables(name, namespace_decl, true, max_matches, variables)) 892 if (variables.GetSize() > max_matches) 893 break; 894 } 895 } 896 } 897 return variables.GetSize() - original_size; 898} 899 900uint32_t 901SymbolFileDWARFDebugMap::FindGlobalVariables (const ConstString &name, const ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables) 902{ 903 904 // If we aren't appending the results to this list, then clear the list 905 if (!append) 906 variables.Clear(); 907 908 // Remember how many variables are in the list before we search in case 909 // we are appending the results to a variable list. 910 const uint32_t original_size = variables.GetSize(); 911 912 uint32_t total_matches = 0; 913 914 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 915 const uint32_t oso_matches = oso_dwarf->FindGlobalVariables (name, 916 namespace_decl, 917 true, 918 max_matches, 919 variables); 920 if (oso_matches > 0) 921 { 922 total_matches += oso_matches; 923 924 // Are we getting all matches? 925 if (max_matches == UINT32_MAX) 926 return false; // Yep, continue getting everything 927 928 // If we have found enough matches, lets get out 929 if (max_matches >= total_matches) 930 return true; 931 932 // Update the max matches for any subsequent calls to find globals 933 // in any other object files with DWARF 934 max_matches -= oso_matches; 935 } 936 937 return false; 938 }); 939 940 // Return the number of variable that were appended to the list 941 return variables.GetSize() - original_size; 942} 943 944 945uint32_t 946SymbolFileDWARFDebugMap::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 987int 988SymbolFileDWARFDebugMap::SymbolContainsSymbolWithIndex (uint32_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info) 989{ 990 const uint32_t symbol_idx = *symbol_idx_ptr; 991 992 if (symbol_idx < comp_unit_info->first_symbol_index) 993 return -1; 994 995 if (symbol_idx <= comp_unit_info->last_symbol_index) 996 return 0; 997 998 return 1; 999} 1000 1001 1002int 1003SymbolFileDWARFDebugMap::SymbolContainsSymbolWithID (user_id_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info) 1004{ 1005 const user_id_t symbol_id = *symbol_idx_ptr; 1006 1007 if (symbol_id < comp_unit_info->first_symbol_id) 1008 return -1; 1009 1010 if (symbol_id <= comp_unit_info->last_symbol_id) 1011 return 0; 1012 1013 return 1; 1014} 1015 1016 1017SymbolFileDWARFDebugMap::CompileUnitInfo* 1018SymbolFileDWARFDebugMap::GetCompileUnitInfoForSymbolWithIndex (uint32_t symbol_idx, uint32_t *oso_idx_ptr) 1019{ 1020 const uint32_t oso_index_count = m_compile_unit_infos.size(); 1021 CompileUnitInfo *comp_unit_info = NULL; 1022 if (oso_index_count) 1023 { 1024 comp_unit_info = (CompileUnitInfo*)bsearch(&symbol_idx, 1025 &m_compile_unit_infos[0], 1026 m_compile_unit_infos.size(), 1027 sizeof(CompileUnitInfo), 1028 (ComparisonFunction)SymbolContainsSymbolWithIndex); 1029 } 1030 1031 if (oso_idx_ptr) 1032 { 1033 if (comp_unit_info != NULL) 1034 *oso_idx_ptr = comp_unit_info - &m_compile_unit_infos[0]; 1035 else 1036 *oso_idx_ptr = UINT32_MAX; 1037 } 1038 return comp_unit_info; 1039} 1040 1041SymbolFileDWARFDebugMap::CompileUnitInfo* 1042SymbolFileDWARFDebugMap::GetCompileUnitInfoForSymbolWithID (user_id_t symbol_id, uint32_t *oso_idx_ptr) 1043{ 1044 const uint32_t oso_index_count = m_compile_unit_infos.size(); 1045 CompileUnitInfo *comp_unit_info = NULL; 1046 if (oso_index_count) 1047 { 1048 comp_unit_info = (CompileUnitInfo*)::bsearch (&symbol_id, 1049 &m_compile_unit_infos[0], 1050 m_compile_unit_infos.size(), 1051 sizeof(CompileUnitInfo), 1052 (ComparisonFunction)SymbolContainsSymbolWithID); 1053 } 1054 1055 if (oso_idx_ptr) 1056 { 1057 if (comp_unit_info != NULL) 1058 *oso_idx_ptr = comp_unit_info - &m_compile_unit_infos[0]; 1059 else 1060 *oso_idx_ptr = UINT32_MAX; 1061 } 1062 return comp_unit_info; 1063} 1064 1065 1066static void 1067RemoveFunctionsWithModuleNotEqualTo (const ModuleSP &module_sp, SymbolContextList &sc_list, uint32_t start_idx) 1068{ 1069 // We found functions in .o files. Not all functions in the .o files 1070 // will have made it into the final output file. The ones that did 1071 // make it into the final output file will have a section whose module 1072 // matches the module from the ObjectFile for this SymbolFile. When 1073 // the modules don't match, then we have something that was in a 1074 // .o file, but doesn't map to anything in the final executable. 1075 uint32_t i=start_idx; 1076 while (i < sc_list.GetSize()) 1077 { 1078 SymbolContext sc; 1079 sc_list.GetContextAtIndex(i, sc); 1080 if (sc.function) 1081 { 1082 const SectionSP section_sp (sc.function->GetAddressRange().GetBaseAddress().GetSection()); 1083 if (section_sp->GetModule() != module_sp) 1084 { 1085 sc_list.RemoveContextAtIndex(i); 1086 continue; 1087 } 1088 } 1089 ++i; 1090 } 1091} 1092 1093uint32_t 1094SymbolFileDWARFDebugMap::FindFunctions(const ConstString &name, const ClangNamespaceDecl *namespace_decl, uint32_t name_type_mask, bool include_inlines, bool append, SymbolContextList& sc_list) 1095{ 1096 Timer scoped_timer (__PRETTY_FUNCTION__, 1097 "SymbolFileDWARFDebugMap::FindFunctions (name = %s)", 1098 name.GetCString()); 1099 1100 uint32_t initial_size = 0; 1101 if (append) 1102 initial_size = sc_list.GetSize(); 1103 else 1104 sc_list.Clear(); 1105 1106 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1107 uint32_t sc_idx = sc_list.GetSize(); 1108 if (oso_dwarf->FindFunctions(name, namespace_decl, name_type_mask, include_inlines, true, sc_list)) 1109 { 1110 RemoveFunctionsWithModuleNotEqualTo (m_obj_file->GetModule(), sc_list, sc_idx); 1111 } 1112 return false; 1113 }); 1114 1115 return sc_list.GetSize() - initial_size; 1116} 1117 1118 1119uint32_t 1120SymbolFileDWARFDebugMap::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 1145size_t 1146SymbolFileDWARFDebugMap::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 1155 uint32_t initial_size = type_list.GetSize(); 1156 SymbolFileDWARF *oso_dwarf = NULL; 1157 if (sc_scope) 1158 { 1159 SymbolContext sc; 1160 sc_scope->CalculateSymbolContext(&sc); 1161 1162 CompileUnitInfo *cu_info = GetCompUnitInfo (sc); 1163 if (cu_info) 1164 { 1165 oso_dwarf = GetSymbolFileByCompUnitInfo (cu_info); 1166 if (oso_dwarf) 1167 oso_dwarf->GetTypes (sc_scope, type_mask, type_list); 1168 } 1169 } 1170 else 1171 { 1172 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1173 oso_dwarf->GetTypes (sc_scope, type_mask, type_list); 1174 return false; 1175 }); 1176 } 1177 return type_list.GetSize() - initial_size; 1178} 1179 1180 1181TypeSP 1182SymbolFileDWARFDebugMap::FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &die_decl_ctx) 1183{ 1184 TypeSP type_sp; 1185 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1186 type_sp = oso_dwarf->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); 1187 return ((bool)type_sp); 1188 }); 1189 return type_sp; 1190} 1191 1192 1193 1194bool 1195SymbolFileDWARFDebugMap::Supports_DW_AT_APPLE_objc_complete_type (SymbolFileDWARF *skip_dwarf_oso) 1196{ 1197 if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate) 1198 { 1199 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo; 1200 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1201 if (skip_dwarf_oso != oso_dwarf && oso_dwarf->Supports_DW_AT_APPLE_objc_complete_type(NULL)) 1202 { 1203 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; 1204 return true; 1205 } 1206 return false; 1207 }); 1208 } 1209 return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes; 1210} 1211 1212TypeSP 1213SymbolFileDWARFDebugMap::FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die, 1214 const ConstString &type_name, 1215 bool must_be_implementation) 1216{ 1217 // If we have a debug map, we will have an Objective C symbol whose name is 1218 // the type name and whose type is eSymbolTypeObjCClass. If we can find that 1219 // symbol and find its containing parent, we can locate the .o file that will 1220 // contain the implementation definition since it will be scoped inside the N_SO 1221 // and we can then locate the SymbolFileDWARF that corresponds to that N_SO. 1222 SymbolFileDWARF *oso_dwarf = NULL; 1223 TypeSP type_sp; 1224 ObjectFile *module_objfile = m_obj_file->GetModule()->GetObjectFile(); 1225 if (module_objfile) 1226 { 1227 Symtab *symtab = module_objfile->GetSymtab(); 1228 if (symtab) 1229 { 1230 Symbol *objc_class_symbol = symtab->FindFirstSymbolWithNameAndType(type_name, eSymbolTypeObjCClass, Symtab::eDebugAny, Symtab::eVisibilityAny); 1231 if (objc_class_symbol) 1232 { 1233 // Get the N_SO symbol that contains the objective C class symbol as this 1234 // should be the .o file that contains the real definition... 1235 const Symbol *source_file_symbol = symtab->GetParent(objc_class_symbol); 1236 1237 if (source_file_symbol && source_file_symbol->GetType() == eSymbolTypeSourceFile) 1238 { 1239 const uint32_t source_file_symbol_idx = symtab->GetIndexForSymbol(source_file_symbol); 1240 if (source_file_symbol_idx != UINT32_MAX) 1241 { 1242 CompileUnitInfo *compile_unit_info = GetCompileUnitInfoForSymbolWithIndex (source_file_symbol_idx, NULL); 1243 if (compile_unit_info) 1244 { 1245 oso_dwarf = GetSymbolFileByCompUnitInfo (compile_unit_info); 1246 if (oso_dwarf) 1247 { 1248 TypeSP type_sp (oso_dwarf->FindCompleteObjCDefinitionTypeForDIE (die, type_name, must_be_implementation)); 1249 if (type_sp) 1250 { 1251 return type_sp; 1252 } 1253 } 1254 } 1255 } 1256 } 1257 } 1258 } 1259 } 1260 1261 // Only search all .o files for the definition if we don't need the implementation 1262 // because otherwise, with a valid debug map we should have the ObjC class symbol and 1263 // the code above should have found it. 1264 if (must_be_implementation == false) 1265 { 1266 TypeSP type_sp; 1267 1268 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1269 type_sp = oso_dwarf->FindCompleteObjCDefinitionTypeForDIE (die, type_name, must_be_implementation); 1270 return (bool)type_sp; 1271 }); 1272 1273 return type_sp; 1274 } 1275 return TypeSP(); 1276} 1277 1278uint32_t 1279SymbolFileDWARFDebugMap::FindTypes 1280( 1281 const SymbolContext& sc, 1282 const ConstString &name, 1283 const ClangNamespaceDecl *namespace_decl, 1284 bool append, 1285 uint32_t max_matches, 1286 TypeList& types 1287) 1288{ 1289 if (!append) 1290 types.Clear(); 1291 1292 const uint32_t initial_types_size = types.GetSize(); 1293 SymbolFileDWARF *oso_dwarf; 1294 1295 if (sc.comp_unit) 1296 { 1297 oso_dwarf = GetSymbolFile (sc); 1298 if (oso_dwarf) 1299 return oso_dwarf->FindTypes (sc, name, namespace_decl, append, max_matches, types); 1300 } 1301 else 1302 { 1303 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1304 oso_dwarf->FindTypes (sc, name, namespace_decl, append, max_matches, types); 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 1323ClangNamespaceDecl 1324SymbolFileDWARFDebugMap::FindNamespace (const lldb_private::SymbolContext& sc, 1325 const lldb_private::ConstString &name, 1326 const ClangNamespaceDecl *parent_namespace_decl) 1327{ 1328 ClangNamespaceDecl 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_namespace_decl); 1336 } 1337 else 1338 { 1339 ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1340 matching_namespace = oso_dwarf->FindNamespace (sc, name, parent_namespace_decl); 1341 1342 return (bool)matching_namespace; 1343 }); 1344 } 1345 1346 return matching_namespace; 1347} 1348 1349//------------------------------------------------------------------ 1350// PluginInterface protocol 1351//------------------------------------------------------------------ 1352lldb_private::ConstString 1353SymbolFileDWARFDebugMap::GetPluginName() 1354{ 1355 return GetPluginNameStatic(); 1356} 1357 1358uint32_t 1359SymbolFileDWARFDebugMap::GetPluginVersion() 1360{ 1361 return 1; 1362} 1363 1364lldb::CompUnitSP 1365SymbolFileDWARFDebugMap::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 1386SymbolFileDWARFDebugMap::CompileUnitInfo * 1387SymbolFileDWARFDebugMap::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 1405void 1406SymbolFileDWARFDebugMap::SetCompileUnit (SymbolFileDWARF *oso_dwarf, const CompUnitSP &cu_sp) 1407{ 1408 if (oso_dwarf) 1409 { 1410 const uint32_t cu_count = GetNumCompileUnits(); 1411 for (uint32_t cu_idx=0; cu_idx<cu_count; ++cu_idx) 1412 { 1413 SymbolFileDWARF *oso_symfile = GetSymbolFileByCompUnitInfo (&m_compile_unit_infos[cu_idx]); 1414 if (oso_symfile == oso_dwarf) 1415 { 1416 if (m_compile_unit_infos[cu_idx].compile_unit_sp) 1417 { 1418 assert (m_compile_unit_infos[cu_idx].compile_unit_sp.get() == cu_sp.get()); 1419 } 1420 else 1421 { 1422 m_compile_unit_infos[cu_idx].compile_unit_sp = cu_sp; 1423 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp); 1424 } 1425 } 1426 } 1427 } 1428} 1429 1430 1431void 1432SymbolFileDWARFDebugMap::CompleteTagDecl (void *baton, clang::TagDecl *decl) 1433{ 1434 SymbolFileDWARFDebugMap *symbol_file_dwarf = (SymbolFileDWARFDebugMap *)baton; 1435 ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); 1436 if (clang_type) 1437 { 1438 symbol_file_dwarf->ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1439 if (oso_dwarf->HasForwardDeclForClangType (clang_type)) 1440 { 1441 oso_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); 1442 return true; 1443 } 1444 return false; 1445 }); 1446 } 1447} 1448 1449void 1450SymbolFileDWARFDebugMap::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *decl) 1451{ 1452 SymbolFileDWARFDebugMap *symbol_file_dwarf = (SymbolFileDWARFDebugMap *)baton; 1453 ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); 1454 if (clang_type) 1455 { 1456 symbol_file_dwarf->ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1457 if (oso_dwarf->HasForwardDeclForClangType (clang_type)) 1458 { 1459 oso_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); 1460 return true; 1461 } 1462 return false; 1463 }); 1464 } 1465} 1466 1467bool 1468SymbolFileDWARFDebugMap::LayoutRecordType(void *baton, const clang::RecordDecl *record_decl, uint64_t &size, 1469 uint64_t &alignment, 1470 llvm::DenseMap<const clang::FieldDecl *, uint64_t> &field_offsets, 1471 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets, 1472 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets) 1473{ 1474 SymbolFileDWARFDebugMap *symbol_file_dwarf = (SymbolFileDWARFDebugMap *)baton; 1475 bool laid_out = false; 1476 symbol_file_dwarf->ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { 1477 return (laid_out = oso_dwarf->LayoutRecordType (record_decl, size, alignment, field_offsets, base_offsets, vbase_offsets)); 1478 }); 1479 return laid_out; 1480} 1481 1482 1483 1484clang::DeclContext* 1485SymbolFileDWARFDebugMap::GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid) 1486{ 1487 const uint64_t oso_idx = GetOSOIndexFromUserID (type_uid); 1488 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 1489 if (oso_dwarf) 1490 return oso_dwarf->GetClangDeclContextContainingTypeUID (type_uid); 1491 return NULL; 1492} 1493 1494clang::DeclContext* 1495SymbolFileDWARFDebugMap::GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid) 1496{ 1497 const uint64_t oso_idx = GetOSOIndexFromUserID (type_uid); 1498 SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex (oso_idx); 1499 if (oso_dwarf) 1500 return oso_dwarf->GetClangDeclContextForTypeUID (sc, type_uid); 1501 return NULL; 1502} 1503 1504bool 1505SymbolFileDWARFDebugMap::AddOSOFileRange (CompileUnitInfo *cu_info, 1506 lldb::addr_t exe_file_addr, 1507 lldb::addr_t oso_file_addr, 1508 lldb::addr_t oso_byte_size) 1509{ 1510 const uint32_t debug_map_idx = m_debug_map.FindEntryIndexThatContains(exe_file_addr); 1511 if (debug_map_idx != UINT32_MAX) 1512 { 1513 DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains(exe_file_addr); 1514 debug_map_entry->data.SetOSOFileAddress(oso_file_addr); 1515 cu_info->file_range_map.Append(FileRangeMap::Entry(oso_file_addr, oso_byte_size, exe_file_addr)); 1516 return true; 1517 } 1518 return false; 1519} 1520 1521void 1522SymbolFileDWARFDebugMap::FinalizeOSOFileRanges (CompileUnitInfo *cu_info) 1523{ 1524 cu_info->file_range_map.Sort(); 1525#if defined(DEBUG_OSO_DMAP) 1526 const FileRangeMap &oso_file_range_map = cu_info->GetFileRangeMap(this); 1527 const size_t n = oso_file_range_map.GetSize(); 1528 printf ("SymbolFileDWARFDebugMap::FinalizeOSOFileRanges (cu_info = %p) %s\n", 1529 cu_info, 1530 cu_info->oso_sp->module_sp->GetFileSpec().GetPath().c_str()); 1531 for (size_t i=0; i<n; ++i) 1532 { 1533 const FileRangeMap::Entry &entry = oso_file_range_map.GetEntryRef(i); 1534 printf ("oso [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ") ==> exe [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ")\n", 1535 entry.GetRangeBase(), entry.GetRangeEnd(), 1536 entry.data, entry.data + entry.GetByteSize()); 1537 } 1538#endif 1539} 1540 1541lldb::addr_t 1542SymbolFileDWARFDebugMap::LinkOSOFileAddress (SymbolFileDWARF *oso_symfile, lldb::addr_t oso_file_addr) 1543{ 1544 CompileUnitInfo *cu_info = GetCompileUnitInfo (oso_symfile); 1545 if (cu_info) 1546 { 1547 const FileRangeMap::Entry *oso_range_entry = cu_info->GetFileRangeMap(this).FindEntryThatContains(oso_file_addr); 1548 if (oso_range_entry) 1549 { 1550 const DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains(oso_range_entry->data); 1551 if (debug_map_entry) 1552 { 1553 const lldb::addr_t offset = oso_file_addr - oso_range_entry->GetRangeBase(); 1554 const lldb::addr_t exe_file_addr = debug_map_entry->GetRangeBase() + offset; 1555 return exe_file_addr; 1556 } 1557 } 1558 } 1559 return LLDB_INVALID_ADDRESS; 1560} 1561 1562bool 1563SymbolFileDWARFDebugMap::LinkOSOAddress (Address &addr) 1564{ 1565 // Make sure this address hasn't been fixed already 1566 Module *exe_module = GetObjectFile()->GetModule().get(); 1567 Module *addr_module = addr.GetModule().get(); 1568 if (addr_module == exe_module) 1569 return true; // Address is already in terms of the main executable module 1570 1571 CompileUnitInfo *cu_info = GetCompileUnitInfo (GetSymbolFileAsSymbolFileDWARF(addr_module->GetSymbolVendor()->GetSymbolFile())); 1572 if (cu_info) 1573 { 1574 const lldb::addr_t oso_file_addr = addr.GetFileAddress(); 1575 const FileRangeMap::Entry *oso_range_entry = cu_info->GetFileRangeMap(this).FindEntryThatContains(oso_file_addr); 1576 if (oso_range_entry) 1577 { 1578 const DebugMap::Entry *debug_map_entry = m_debug_map.FindEntryThatContains(oso_range_entry->data); 1579 if (debug_map_entry) 1580 { 1581 const lldb::addr_t offset = oso_file_addr - oso_range_entry->GetRangeBase(); 1582 const lldb::addr_t exe_file_addr = debug_map_entry->GetRangeBase() + offset; 1583 return exe_module->ResolveFileAddress(exe_file_addr, addr); 1584 } 1585 } 1586 } 1587 return true; 1588} 1589 1590LineTable * 1591SymbolFileDWARFDebugMap::LinkOSOLineTable (SymbolFileDWARF *oso_dwarf, LineTable *line_table) 1592{ 1593 CompileUnitInfo *cu_info = GetCompileUnitInfo (oso_dwarf); 1594 if (cu_info) 1595 return line_table->LinkLineTable(cu_info->GetFileRangeMap(this)); 1596 return NULL; 1597} 1598 1599size_t 1600SymbolFileDWARFDebugMap::AddOSOARanges (SymbolFileDWARF* dwarf2Data, DWARFDebugAranges* debug_aranges) 1601{ 1602 size_t num_line_entries_added = 0; 1603 if (debug_aranges && dwarf2Data) 1604 { 1605 CompileUnitInfo *compile_unit_info = GetCompileUnitInfo(dwarf2Data); 1606 if (compile_unit_info) 1607 { 1608 const FileRangeMap &file_range_map = compile_unit_info->GetFileRangeMap(this); 1609 for (size_t idx = 0; 1610 idx < file_range_map.GetSize(); 1611 idx++) 1612 { 1613 const FileRangeMap::Entry* entry = file_range_map.GetEntryAtIndex(idx); 1614 if (entry) 1615 { 1616 printf ("[0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ")\n", entry->GetRangeBase(), entry->GetRangeEnd()); 1617 debug_aranges->AppendRange(dwarf2Data->GetID(), entry->GetRangeBase(), entry->GetRangeEnd()); 1618 num_line_entries_added++; 1619 } 1620 } 1621 } 1622 } 1623 return num_line_entries_added; 1624} 1625 1626