1 //===-- ClangExpressionDeclMap.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 "ClangExpressionDeclMap.h" 11 12 #include "ASTDumper.h" 13 #include "ClangASTSource.h" 14 #include "ClangModulesDeclVendor.h" 15 #include "ClangPersistentVariables.h" 16 17 #include "clang/AST/ASTConsumer.h" 18 #include "clang/AST/ASTContext.h" 19 #include "clang/AST/DeclarationName.h" 20 #include "clang/AST/Decl.h" 21 #include "lldb/lldb-private.h" 22 #include "lldb/Core/Address.h" 23 #include "lldb/Core/Error.h" 24 #include "lldb/Core/Log.h" 25 #include "lldb/Core/Module.h" 26 #include "lldb/Core/ModuleSpec.h" 27 #include "lldb/Core/RegisterValue.h" 28 #include "lldb/Core/ValueObjectConstResult.h" 29 #include "lldb/Core/ValueObjectVariable.h" 30 #include "lldb/Expression/Materializer.h" 31 #include "lldb/Host/Endian.h" 32 #include "lldb/Symbol/ClangASTContext.h" 33 #include "lldb/Symbol/CompilerDecl.h" 34 #include "lldb/Symbol/CompilerDeclContext.h" 35 #include "lldb/Symbol/CompileUnit.h" 36 #include "lldb/Symbol/Function.h" 37 #include "lldb/Symbol/ObjectFile.h" 38 #include "lldb/Symbol/SymbolContext.h" 39 #include "lldb/Symbol/SymbolFile.h" 40 #include "lldb/Symbol/SymbolVendor.h" 41 #include "lldb/Symbol/Type.h" 42 #include "lldb/Symbol/TypeList.h" 43 #include "lldb/Symbol/Variable.h" 44 #include "lldb/Symbol/VariableList.h" 45 #include "lldb/Target/CPPLanguageRuntime.h" 46 #include "lldb/Target/ExecutionContext.h" 47 #include "lldb/Target/ObjCLanguageRuntime.h" 48 #include "lldb/Target/Process.h" 49 #include "lldb/Target/RegisterContext.h" 50 #include "lldb/Target/StackFrame.h" 51 #include "lldb/Target/Target.h" 52 #include "lldb/Target/Thread.h" 53 54 #include "Plugins/Language/CPlusPlus/CPlusPlusLanguage.h" 55 56 using namespace lldb; 57 using namespace lldb_private; 58 using namespace clang; 59 60 namespace 61 { 62 const char *g_lldb_local_vars_namespace_cstr = "$__lldb_local_vars"; 63 } // anonymous namespace 64 65 ClangExpressionDeclMap::ClangExpressionDeclMap (bool keep_result_in_memory, 66 Materializer::PersistentVariableDelegate *result_delegate, 67 ExecutionContext &exe_ctx) : 68 ClangASTSource (exe_ctx.GetTargetSP()), 69 m_found_entities (), 70 m_struct_members (), 71 m_keep_result_in_memory (keep_result_in_memory), 72 m_result_delegate (result_delegate), 73 m_parser_vars (), 74 m_struct_vars () 75 { 76 EnableStructVars(); 77 } 78 79 ClangExpressionDeclMap::~ClangExpressionDeclMap() 80 { 81 // Note: The model is now that the parser's AST context and all associated 82 // data does not vanish until the expression has been executed. This means 83 // that valuable lookup data (like namespaces) doesn't vanish, but 84 85 DidParse(); 86 DisableStructVars(); 87 } 88 89 bool 90 ClangExpressionDeclMap::WillParse(ExecutionContext &exe_ctx, 91 Materializer *materializer) 92 { 93 ClangASTMetrics::ClearLocalCounters(); 94 95 EnableParserVars(); 96 m_parser_vars->m_exe_ctx = exe_ctx; 97 98 Target *target = exe_ctx.GetTargetPtr(); 99 if (exe_ctx.GetFramePtr()) 100 m_parser_vars->m_sym_ctx = exe_ctx.GetFramePtr()->GetSymbolContext(lldb::eSymbolContextEverything); 101 else if (exe_ctx.GetThreadPtr() && exe_ctx.GetThreadPtr()->GetStackFrameAtIndex(0)) 102 m_parser_vars->m_sym_ctx = exe_ctx.GetThreadPtr()->GetStackFrameAtIndex(0)->GetSymbolContext(lldb::eSymbolContextEverything); 103 else if (exe_ctx.GetProcessPtr()) 104 { 105 m_parser_vars->m_sym_ctx.Clear(true); 106 m_parser_vars->m_sym_ctx.target_sp = exe_ctx.GetTargetSP(); 107 } 108 else if (target) 109 { 110 m_parser_vars->m_sym_ctx.Clear(true); 111 m_parser_vars->m_sym_ctx.target_sp = exe_ctx.GetTargetSP(); 112 } 113 114 if (target) 115 { 116 m_parser_vars->m_persistent_vars = llvm::cast<ClangPersistentVariables>(target->GetPersistentExpressionStateForLanguage(eLanguageTypeC)); 117 118 if (!target->GetScratchClangASTContext()) 119 return false; 120 } 121 122 m_parser_vars->m_target_info = GetTargetInfo(); 123 m_parser_vars->m_materializer = materializer; 124 125 return true; 126 } 127 128 void 129 ClangExpressionDeclMap::InstallCodeGenerator (clang::ASTConsumer *code_gen) 130 { 131 assert(m_parser_vars); 132 m_parser_vars->m_code_gen = code_gen; 133 } 134 135 void 136 ClangExpressionDeclMap::DidParse() 137 { 138 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 139 140 if (log) 141 ClangASTMetrics::DumpCounters(log); 142 143 if (m_parser_vars.get()) 144 { 145 for (size_t entity_index = 0, num_entities = m_found_entities.GetSize(); 146 entity_index < num_entities; 147 ++entity_index) 148 { 149 ExpressionVariableSP var_sp(m_found_entities.GetVariableAtIndex(entity_index)); 150 if (var_sp) 151 llvm::cast<ClangExpressionVariable>(var_sp.get())->DisableParserVars(GetParserID()); 152 } 153 154 for (size_t pvar_index = 0, num_pvars = m_parser_vars->m_persistent_vars->GetSize(); 155 pvar_index < num_pvars; 156 ++pvar_index) 157 { 158 ExpressionVariableSP pvar_sp(m_parser_vars->m_persistent_vars->GetVariableAtIndex(pvar_index)); 159 if (ClangExpressionVariable *clang_var = llvm::dyn_cast<ClangExpressionVariable>(pvar_sp.get())) 160 clang_var->DisableParserVars(GetParserID()); 161 } 162 163 DisableParserVars(); 164 } 165 } 166 167 // Interface for IRForTarget 168 169 ClangExpressionDeclMap::TargetInfo 170 ClangExpressionDeclMap::GetTargetInfo() 171 { 172 assert (m_parser_vars.get()); 173 174 TargetInfo ret; 175 176 ExecutionContext &exe_ctx = m_parser_vars->m_exe_ctx; 177 178 Process *process = exe_ctx.GetProcessPtr(); 179 if (process) 180 { 181 ret.byte_order = process->GetByteOrder(); 182 ret.address_byte_size = process->GetAddressByteSize(); 183 } 184 else 185 { 186 Target *target = exe_ctx.GetTargetPtr(); 187 if (target) 188 { 189 ret.byte_order = target->GetArchitecture().GetByteOrder(); 190 ret.address_byte_size = target->GetArchitecture().GetAddressByteSize(); 191 } 192 } 193 194 return ret; 195 } 196 197 bool 198 ClangExpressionDeclMap::AddPersistentVariable 199 ( 200 const NamedDecl *decl, 201 const ConstString &name, 202 TypeFromParser parser_type, 203 bool is_result, 204 bool is_lvalue 205 ) 206 { 207 assert (m_parser_vars.get()); 208 209 ClangASTContext *ast = llvm::dyn_cast_or_null<ClangASTContext>(parser_type.GetTypeSystem()); 210 if (ast == nullptr) 211 return false; 212 213 if (m_parser_vars->m_materializer && is_result) 214 { 215 Error err; 216 217 ExecutionContext &exe_ctx = m_parser_vars->m_exe_ctx; 218 Target *target = exe_ctx.GetTargetPtr(); 219 if (target == nullptr) 220 return false; 221 222 ClangASTContext *context(target->GetScratchClangASTContext()); 223 224 TypeFromUser user_type(m_ast_importer_sp->DeportType(context->getASTContext(), 225 ast->getASTContext(), 226 parser_type.GetOpaqueQualType()), 227 context); 228 229 uint32_t offset = m_parser_vars->m_materializer->AddResultVariable(user_type, 230 is_lvalue, 231 m_keep_result_in_memory, 232 m_result_delegate, 233 err); 234 235 ClangExpressionVariable *var = new ClangExpressionVariable(exe_ctx.GetBestExecutionContextScope(), 236 name, 237 user_type, 238 m_parser_vars->m_target_info.byte_order, 239 m_parser_vars->m_target_info.address_byte_size); 240 241 m_found_entities.AddNewlyConstructedVariable(var); 242 243 var->EnableParserVars(GetParserID()); 244 245 ClangExpressionVariable::ParserVars *parser_vars = var->GetParserVars(GetParserID()); 246 247 parser_vars->m_named_decl = decl; 248 parser_vars->m_parser_type = parser_type; 249 250 var->EnableJITVars(GetParserID()); 251 252 ClangExpressionVariable::JITVars *jit_vars = var->GetJITVars(GetParserID()); 253 254 jit_vars->m_offset = offset; 255 256 return true; 257 } 258 259 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 260 ExecutionContext &exe_ctx = m_parser_vars->m_exe_ctx; 261 Target *target = exe_ctx.GetTargetPtr(); 262 if (target == NULL) 263 return false; 264 265 ClangASTContext *context(target->GetScratchClangASTContext()); 266 267 TypeFromUser user_type(m_ast_importer_sp->DeportType(context->getASTContext(), 268 ast->getASTContext(), 269 parser_type.GetOpaqueQualType()), 270 context); 271 272 if (!user_type.GetOpaqueQualType()) 273 { 274 if (log) 275 log->Printf("Persistent variable's type wasn't copied successfully"); 276 return false; 277 } 278 279 if (!m_parser_vars->m_target_info.IsValid()) 280 return false; 281 282 ClangExpressionVariable *var = llvm::cast<ClangExpressionVariable>(m_parser_vars->m_persistent_vars->CreatePersistentVariable (exe_ctx.GetBestExecutionContextScope (), 283 name, 284 user_type, 285 m_parser_vars->m_target_info.byte_order, 286 m_parser_vars->m_target_info.address_byte_size).get()); 287 288 if (!var) 289 return false; 290 291 var->m_frozen_sp->SetHasCompleteType(); 292 293 if (is_result) 294 var->m_flags |= ClangExpressionVariable::EVNeedsFreezeDry; 295 else 296 var->m_flags |= ClangExpressionVariable::EVKeepInTarget; // explicitly-declared persistent variables should persist 297 298 if (is_lvalue) 299 { 300 var->m_flags |= ClangExpressionVariable::EVIsProgramReference; 301 } 302 else 303 { 304 var->m_flags |= ClangExpressionVariable::EVIsLLDBAllocated; 305 var->m_flags |= ClangExpressionVariable::EVNeedsAllocation; 306 } 307 308 if (m_keep_result_in_memory) 309 { 310 var->m_flags |= ClangExpressionVariable::EVKeepInTarget; 311 } 312 313 if (log) 314 log->Printf("Created persistent variable with flags 0x%hx", var->m_flags); 315 316 var->EnableParserVars(GetParserID()); 317 318 ClangExpressionVariable::ParserVars *parser_vars = var->GetParserVars(GetParserID()); 319 320 parser_vars->m_named_decl = decl; 321 parser_vars->m_parser_type = parser_type; 322 323 return true; 324 } 325 326 bool 327 ClangExpressionDeclMap::AddValueToStruct 328 ( 329 const NamedDecl *decl, 330 const ConstString &name, 331 llvm::Value *value, 332 size_t size, 333 lldb::offset_t alignment 334 ) 335 { 336 assert (m_struct_vars.get()); 337 assert (m_parser_vars.get()); 338 339 bool is_persistent_variable = false; 340 341 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 342 343 m_struct_vars->m_struct_laid_out = false; 344 345 if (ClangExpressionVariable::FindVariableInList(m_struct_members, decl, GetParserID())) 346 return true; 347 348 ClangExpressionVariable *var(ClangExpressionVariable::FindVariableInList(m_found_entities, decl, GetParserID())); 349 350 if (!var) 351 { 352 var = ClangExpressionVariable::FindVariableInList(*m_parser_vars->m_persistent_vars, decl, GetParserID()); 353 is_persistent_variable = true; 354 } 355 356 if (!var) 357 return false; 358 359 if (log) 360 log->Printf("Adding value for (NamedDecl*)%p [%s - %s] to the structure", 361 static_cast<const void*>(decl), name.GetCString(), 362 var->GetName().GetCString()); 363 364 // We know entity->m_parser_vars is valid because we used a parser variable 365 // to find it 366 367 ClangExpressionVariable::ParserVars *parser_vars = llvm::cast<ClangExpressionVariable>(var)->GetParserVars(GetParserID()); 368 369 parser_vars->m_llvm_value = value; 370 371 if (ClangExpressionVariable::JITVars *jit_vars = llvm::cast<ClangExpressionVariable>(var)->GetJITVars(GetParserID())) 372 { 373 // We already laid this out; do not touch 374 375 if (log) 376 log->Printf("Already placed at 0x%llx", (unsigned long long)jit_vars->m_offset); 377 } 378 379 llvm::cast<ClangExpressionVariable>(var)->EnableJITVars(GetParserID()); 380 381 ClangExpressionVariable::JITVars *jit_vars = llvm::cast<ClangExpressionVariable>(var)->GetJITVars(GetParserID()); 382 383 jit_vars->m_alignment = alignment; 384 jit_vars->m_size = size; 385 386 m_struct_members.AddVariable(var->shared_from_this()); 387 388 if (m_parser_vars->m_materializer) 389 { 390 uint32_t offset = 0; 391 392 Error err; 393 394 if (is_persistent_variable) 395 { 396 ExpressionVariableSP var_sp(var->shared_from_this()); 397 offset = m_parser_vars->m_materializer->AddPersistentVariable(var_sp, nullptr, err); 398 } 399 else 400 { 401 if (const lldb_private::Symbol *sym = parser_vars->m_lldb_sym) 402 offset = m_parser_vars->m_materializer->AddSymbol(*sym, err); 403 else if (const RegisterInfo *reg_info = var->GetRegisterInfo()) 404 offset = m_parser_vars->m_materializer->AddRegister(*reg_info, err); 405 else if (parser_vars->m_lldb_var) 406 offset = m_parser_vars->m_materializer->AddVariable(parser_vars->m_lldb_var, err); 407 } 408 409 if (!err.Success()) 410 return false; 411 412 if (log) 413 log->Printf("Placed at 0x%llx", (unsigned long long)offset); 414 415 jit_vars->m_offset = offset; // TODO DoStructLayout() should not change this. 416 } 417 418 return true; 419 } 420 421 bool 422 ClangExpressionDeclMap::DoStructLayout () 423 { 424 assert (m_struct_vars.get()); 425 426 if (m_struct_vars->m_struct_laid_out) 427 return true; 428 429 if (!m_parser_vars->m_materializer) 430 return false; 431 432 m_struct_vars->m_struct_alignment = m_parser_vars->m_materializer->GetStructAlignment(); 433 m_struct_vars->m_struct_size = m_parser_vars->m_materializer->GetStructByteSize(); 434 m_struct_vars->m_struct_laid_out = true; 435 return true; 436 } 437 438 bool ClangExpressionDeclMap::GetStructInfo 439 ( 440 uint32_t &num_elements, 441 size_t &size, 442 lldb::offset_t &alignment 443 ) 444 { 445 assert (m_struct_vars.get()); 446 447 if (!m_struct_vars->m_struct_laid_out) 448 return false; 449 450 num_elements = m_struct_members.GetSize(); 451 size = m_struct_vars->m_struct_size; 452 alignment = m_struct_vars->m_struct_alignment; 453 454 return true; 455 } 456 457 bool 458 ClangExpressionDeclMap::GetStructElement 459 ( 460 const NamedDecl *&decl, 461 llvm::Value *&value, 462 lldb::offset_t &offset, 463 ConstString &name, 464 uint32_t index 465 ) 466 { 467 assert (m_struct_vars.get()); 468 469 if (!m_struct_vars->m_struct_laid_out) 470 return false; 471 472 if (index >= m_struct_members.GetSize()) 473 return false; 474 475 ExpressionVariableSP member_sp(m_struct_members.GetVariableAtIndex(index)); 476 477 if (!member_sp) 478 return false; 479 480 ClangExpressionVariable::ParserVars *parser_vars = llvm::cast<ClangExpressionVariable>(member_sp.get())->GetParserVars(GetParserID()); 481 ClangExpressionVariable::JITVars *jit_vars = llvm::cast<ClangExpressionVariable>(member_sp.get())->GetJITVars(GetParserID()); 482 483 if (!parser_vars || 484 !jit_vars || 485 !member_sp->GetValueObject()) 486 return false; 487 488 decl = parser_vars->m_named_decl; 489 value = parser_vars->m_llvm_value; 490 offset = jit_vars->m_offset; 491 name = member_sp->GetName(); 492 493 return true; 494 } 495 496 bool 497 ClangExpressionDeclMap::GetFunctionInfo 498 ( 499 const NamedDecl *decl, 500 uint64_t &ptr 501 ) 502 { 503 ClangExpressionVariable *entity(ClangExpressionVariable::FindVariableInList(m_found_entities, decl, GetParserID())); 504 505 if (!entity) 506 return false; 507 508 // We know m_parser_vars is valid since we searched for the variable by 509 // its NamedDecl 510 511 ClangExpressionVariable::ParserVars *parser_vars = entity->GetParserVars(GetParserID()); 512 513 ptr = parser_vars->m_lldb_value.GetScalar().ULongLong(); 514 515 return true; 516 } 517 518 addr_t 519 ClangExpressionDeclMap::GetSymbolAddress (Target &target, 520 Process *process, 521 const ConstString &name, 522 lldb::SymbolType symbol_type, 523 lldb_private::Module *module) 524 { 525 SymbolContextList sc_list; 526 527 if (module) 528 module->FindSymbolsWithNameAndType(name, symbol_type, sc_list); 529 else 530 target.GetImages().FindSymbolsWithNameAndType(name, symbol_type, sc_list); 531 532 const uint32_t num_matches = sc_list.GetSize(); 533 addr_t symbol_load_addr = LLDB_INVALID_ADDRESS; 534 535 for (uint32_t i=0; i<num_matches && (symbol_load_addr == 0 || symbol_load_addr == LLDB_INVALID_ADDRESS); i++) 536 { 537 SymbolContext sym_ctx; 538 sc_list.GetContextAtIndex(i, sym_ctx); 539 540 const Address sym_address = sym_ctx.symbol->GetAddress(); 541 542 if (!sym_address.IsValid()) 543 continue; 544 545 switch (sym_ctx.symbol->GetType()) 546 { 547 case eSymbolTypeCode: 548 case eSymbolTypeTrampoline: 549 symbol_load_addr = sym_address.GetCallableLoadAddress (&target); 550 break; 551 552 case eSymbolTypeResolver: 553 symbol_load_addr = sym_address.GetCallableLoadAddress (&target, true); 554 break; 555 556 case eSymbolTypeReExported: 557 { 558 ConstString reexport_name = sym_ctx.symbol->GetReExportedSymbolName(); 559 if (reexport_name) 560 { 561 ModuleSP reexport_module_sp; 562 ModuleSpec reexport_module_spec; 563 reexport_module_spec.GetPlatformFileSpec() = sym_ctx.symbol->GetReExportedSymbolSharedLibrary(); 564 if (reexport_module_spec.GetPlatformFileSpec()) 565 { 566 reexport_module_sp = target.GetImages().FindFirstModule(reexport_module_spec); 567 if (!reexport_module_sp) 568 { 569 reexport_module_spec.GetPlatformFileSpec().GetDirectory().Clear(); 570 reexport_module_sp = target.GetImages().FindFirstModule(reexport_module_spec); 571 } 572 } 573 symbol_load_addr = GetSymbolAddress(target, process, sym_ctx.symbol->GetReExportedSymbolName(), symbol_type, reexport_module_sp.get()); 574 } 575 } 576 break; 577 578 case eSymbolTypeData: 579 case eSymbolTypeRuntime: 580 case eSymbolTypeVariable: 581 case eSymbolTypeLocal: 582 case eSymbolTypeParam: 583 case eSymbolTypeInvalid: 584 case eSymbolTypeAbsolute: 585 case eSymbolTypeException: 586 case eSymbolTypeSourceFile: 587 case eSymbolTypeHeaderFile: 588 case eSymbolTypeObjectFile: 589 case eSymbolTypeCommonBlock: 590 case eSymbolTypeBlock: 591 case eSymbolTypeVariableType: 592 case eSymbolTypeLineEntry: 593 case eSymbolTypeLineHeader: 594 case eSymbolTypeScopeBegin: 595 case eSymbolTypeScopeEnd: 596 case eSymbolTypeAdditional: 597 case eSymbolTypeCompiler: 598 case eSymbolTypeInstrumentation: 599 case eSymbolTypeUndefined: 600 case eSymbolTypeObjCClass: 601 case eSymbolTypeObjCMetaClass: 602 case eSymbolTypeObjCIVar: 603 symbol_load_addr = sym_address.GetLoadAddress (&target); 604 break; 605 } 606 } 607 608 if (symbol_load_addr == LLDB_INVALID_ADDRESS && process) 609 { 610 ObjCLanguageRuntime *runtime = process->GetObjCLanguageRuntime(); 611 612 if (runtime) 613 { 614 symbol_load_addr = runtime->LookupRuntimeSymbol(name); 615 } 616 } 617 618 return symbol_load_addr; 619 } 620 621 addr_t 622 ClangExpressionDeclMap::GetSymbolAddress (const ConstString &name, lldb::SymbolType symbol_type) 623 { 624 assert (m_parser_vars.get()); 625 626 if (!m_parser_vars->m_exe_ctx.GetTargetPtr()) 627 return false; 628 629 return GetSymbolAddress(m_parser_vars->m_exe_ctx.GetTargetRef(), m_parser_vars->m_exe_ctx.GetProcessPtr(), name, symbol_type); 630 } 631 632 const Symbol * 633 ClangExpressionDeclMap::FindGlobalDataSymbol (Target &target, 634 const ConstString &name, 635 lldb_private::Module *module) 636 { 637 SymbolContextList sc_list; 638 639 if (module) 640 module->FindSymbolsWithNameAndType(name, eSymbolTypeAny, sc_list); 641 else 642 target.GetImages().FindSymbolsWithNameAndType(name, eSymbolTypeAny, sc_list); 643 644 const uint32_t matches = sc_list.GetSize(); 645 for (uint32_t i=0; i<matches; ++i) 646 { 647 SymbolContext sym_ctx; 648 sc_list.GetContextAtIndex(i, sym_ctx); 649 if (sym_ctx.symbol) 650 { 651 const Symbol *symbol = sym_ctx.symbol; 652 const Address sym_address = symbol->GetAddress(); 653 654 if (sym_address.IsValid()) 655 { 656 switch (symbol->GetType()) 657 { 658 case eSymbolTypeData: 659 case eSymbolTypeRuntime: 660 case eSymbolTypeAbsolute: 661 case eSymbolTypeObjCClass: 662 case eSymbolTypeObjCMetaClass: 663 case eSymbolTypeObjCIVar: 664 if (symbol->GetDemangledNameIsSynthesized()) 665 { 666 // If the demangled name was synthesized, then don't use it 667 // for expressions. Only let the symbol match if the mangled 668 // named matches for these symbols. 669 if (symbol->GetMangled().GetMangledName() != name) 670 break; 671 } 672 return symbol; 673 674 case eSymbolTypeReExported: 675 { 676 ConstString reexport_name = symbol->GetReExportedSymbolName(); 677 if (reexport_name) 678 { 679 ModuleSP reexport_module_sp; 680 ModuleSpec reexport_module_spec; 681 reexport_module_spec.GetPlatformFileSpec() = symbol->GetReExportedSymbolSharedLibrary(); 682 if (reexport_module_spec.GetPlatformFileSpec()) 683 { 684 reexport_module_sp = target.GetImages().FindFirstModule(reexport_module_spec); 685 if (!reexport_module_sp) 686 { 687 reexport_module_spec.GetPlatformFileSpec().GetDirectory().Clear(); 688 reexport_module_sp = target.GetImages().FindFirstModule(reexport_module_spec); 689 } 690 } 691 // Don't allow us to try and resolve a re-exported symbol if it is the same 692 // as the current symbol 693 if (name == symbol->GetReExportedSymbolName() && module == reexport_module_sp.get()) 694 return NULL; 695 696 return FindGlobalDataSymbol(target, symbol->GetReExportedSymbolName(), reexport_module_sp.get()); 697 } 698 } 699 break; 700 701 case eSymbolTypeCode: // We already lookup functions elsewhere 702 case eSymbolTypeVariable: 703 case eSymbolTypeLocal: 704 case eSymbolTypeParam: 705 case eSymbolTypeTrampoline: 706 case eSymbolTypeInvalid: 707 case eSymbolTypeException: 708 case eSymbolTypeSourceFile: 709 case eSymbolTypeHeaderFile: 710 case eSymbolTypeObjectFile: 711 case eSymbolTypeCommonBlock: 712 case eSymbolTypeBlock: 713 case eSymbolTypeVariableType: 714 case eSymbolTypeLineEntry: 715 case eSymbolTypeLineHeader: 716 case eSymbolTypeScopeBegin: 717 case eSymbolTypeScopeEnd: 718 case eSymbolTypeAdditional: 719 case eSymbolTypeCompiler: 720 case eSymbolTypeInstrumentation: 721 case eSymbolTypeUndefined: 722 case eSymbolTypeResolver: 723 break; 724 } 725 } 726 } 727 } 728 729 return NULL; 730 } 731 732 lldb::VariableSP 733 ClangExpressionDeclMap::FindGlobalVariable 734 ( 735 Target &target, 736 ModuleSP &module, 737 const ConstString &name, 738 CompilerDeclContext *namespace_decl, 739 TypeFromUser *type 740 ) 741 { 742 VariableList vars; 743 744 if (module && namespace_decl) 745 module->FindGlobalVariables (name, namespace_decl, true, -1, vars); 746 else 747 target.GetImages().FindGlobalVariables(name, true, -1, vars); 748 749 if (vars.GetSize()) 750 { 751 if (type) 752 { 753 for (size_t i = 0; i < vars.GetSize(); ++i) 754 { 755 VariableSP var_sp = vars.GetVariableAtIndex(i); 756 757 if (ClangASTContext::AreTypesSame(*type, var_sp->GetType()->GetFullCompilerType ())) 758 return var_sp; 759 } 760 } 761 else 762 { 763 return vars.GetVariableAtIndex(0); 764 } 765 } 766 767 return VariableSP(); 768 } 769 770 ClangASTContext * 771 ClangExpressionDeclMap::GetClangASTContext () 772 { 773 StackFrame *frame = m_parser_vars->m_exe_ctx.GetFramePtr(); 774 if (frame == nullptr) 775 return nullptr; 776 777 SymbolContext sym_ctx = frame->GetSymbolContext(lldb::eSymbolContextFunction|lldb::eSymbolContextBlock); 778 if (sym_ctx.block == nullptr) 779 return nullptr; 780 781 CompilerDeclContext frame_decl_context = sym_ctx.block->GetDeclContext(); 782 if (!frame_decl_context) 783 return nullptr; 784 785 return llvm::dyn_cast_or_null<ClangASTContext>(frame_decl_context.GetTypeSystem()); 786 } 787 788 // Interface for ClangASTSource 789 790 void 791 ClangExpressionDeclMap::FindExternalVisibleDecls (NameSearchContext &context) 792 { 793 assert (m_ast_context); 794 795 ClangASTMetrics::RegisterVisibleQuery(); 796 797 const ConstString name(context.m_decl_name.getAsString().c_str()); 798 799 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 800 801 if (GetImportInProgress()) 802 { 803 if (log && log->GetVerbose()) 804 log->Printf("Ignoring a query during an import"); 805 return; 806 } 807 808 static unsigned int invocation_id = 0; 809 unsigned int current_id = invocation_id++; 810 811 if (log) 812 { 813 if (!context.m_decl_context) 814 log->Printf("ClangExpressionDeclMap::FindExternalVisibleDecls[%u] for '%s' in a NULL DeclContext", current_id, name.GetCString()); 815 else if (const NamedDecl *context_named_decl = dyn_cast<NamedDecl>(context.m_decl_context)) 816 log->Printf("ClangExpressionDeclMap::FindExternalVisibleDecls[%u] for '%s' in '%s'", current_id, name.GetCString(), context_named_decl->getNameAsString().c_str()); 817 else 818 log->Printf("ClangExpressionDeclMap::FindExternalVisibleDecls[%u] for '%s' in a '%s'", current_id, name.GetCString(), context.m_decl_context->getDeclKindName()); 819 } 820 821 if (const NamespaceDecl *namespace_context = dyn_cast<NamespaceDecl>(context.m_decl_context)) 822 { 823 if (namespace_context->getName().str() == std::string(g_lldb_local_vars_namespace_cstr)) 824 { 825 CompilerDeclContext compiler_decl_ctx(GetClangASTContext(), const_cast<void *>(static_cast<const void *>(context.m_decl_context))); 826 FindExternalVisibleDecls(context, lldb::ModuleSP(), compiler_decl_ctx, current_id); 827 return; 828 } 829 830 ClangASTImporter::NamespaceMapSP namespace_map = m_ast_importer_sp->GetNamespaceMap(namespace_context); 831 832 if (log && log->GetVerbose()) 833 log->Printf(" CEDM::FEVD[%u] Inspecting (NamespaceMap*)%p (%d entries)", 834 current_id, static_cast<void*>(namespace_map.get()), 835 (int)namespace_map->size()); 836 837 if (!namespace_map) 838 return; 839 840 for (ClangASTImporter::NamespaceMap::iterator i = namespace_map->begin(), e = namespace_map->end(); 841 i != e; 842 ++i) 843 { 844 if (log) 845 log->Printf(" CEDM::FEVD[%u] Searching namespace %s in module %s", 846 current_id, 847 i->second.GetName().AsCString(), 848 i->first->GetFileSpec().GetFilename().GetCString()); 849 850 FindExternalVisibleDecls(context, 851 i->first, 852 i->second, 853 current_id); 854 } 855 } 856 else if (isa<TranslationUnitDecl>(context.m_decl_context)) 857 { 858 CompilerDeclContext namespace_decl; 859 860 if (log) 861 log->Printf(" CEDM::FEVD[%u] Searching the root namespace", current_id); 862 863 FindExternalVisibleDecls(context, 864 lldb::ModuleSP(), 865 namespace_decl, 866 current_id); 867 } 868 869 if (!context.m_found.variable) 870 ClangASTSource::FindExternalVisibleDecls(context); 871 } 872 873 void 874 ClangExpressionDeclMap::FindExternalVisibleDecls (NameSearchContext &context, 875 lldb::ModuleSP module_sp, 876 CompilerDeclContext &namespace_decl, 877 unsigned int current_id) 878 { 879 assert (m_ast_context); 880 881 std::function<void (clang::FunctionDecl *)> MaybeRegisterFunctionBody = 882 [this](clang::FunctionDecl *copied_function_decl) 883 { 884 if (copied_function_decl->getBody() && m_parser_vars->m_code_gen) 885 { 886 DeclGroupRef decl_group_ref(copied_function_decl); 887 m_parser_vars->m_code_gen->HandleTopLevelDecl(decl_group_ref); 888 } 889 }; 890 891 892 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 893 894 SymbolContextList sc_list; 895 896 const ConstString name(context.m_decl_name.getAsString().c_str()); 897 898 const char *name_unique_cstr = name.GetCString(); 899 900 if (name_unique_cstr == NULL) 901 return; 902 903 static ConstString id_name("id"); 904 static ConstString Class_name("Class"); 905 906 if (name == id_name || name == Class_name) 907 return; 908 909 // Only look for functions by name out in our symbols if the function 910 // doesn't start with our phony prefix of '$' 911 Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr(); 912 StackFrame *frame = m_parser_vars->m_exe_ctx.GetFramePtr(); 913 SymbolContext sym_ctx; 914 if (frame != nullptr) 915 sym_ctx = frame->GetSymbolContext(lldb::eSymbolContextFunction|lldb::eSymbolContextBlock); 916 917 // Try the persistent decls, which take precedence over all else. 918 if (!namespace_decl) 919 { 920 do 921 { 922 if (!target) 923 break; 924 925 ClangASTContext *scratch_clang_ast_context = target->GetScratchClangASTContext(); 926 927 if (!scratch_clang_ast_context) 928 break; 929 930 ASTContext *scratch_ast_context = scratch_clang_ast_context->getASTContext(); 931 932 if (!scratch_ast_context) 933 break; 934 935 NamedDecl *persistent_decl = m_parser_vars->m_persistent_vars->GetPersistentDecl(name); 936 937 if (!persistent_decl) 938 break; 939 940 Decl *parser_persistent_decl = m_ast_importer_sp->CopyDecl(m_ast_context, scratch_ast_context, persistent_decl); 941 942 if (!parser_persistent_decl) 943 break; 944 945 NamedDecl *parser_named_decl = dyn_cast<NamedDecl>(parser_persistent_decl); 946 947 if (!parser_named_decl) 948 break; 949 950 if (clang::FunctionDecl *parser_function_decl = llvm::dyn_cast<clang::FunctionDecl>(parser_named_decl)) 951 { 952 MaybeRegisterFunctionBody(parser_function_decl); 953 } 954 955 if (log) 956 log->Printf(" CEDM::FEVD[%u] Found persistent decl %s", current_id, name.GetCString()); 957 958 context.AddNamedDecl(parser_named_decl); 959 } while (0); 960 } 961 962 if (name_unique_cstr[0] == '$' && !namespace_decl) 963 { 964 static ConstString g_lldb_class_name ("$__lldb_class"); 965 966 if (name == g_lldb_class_name) 967 { 968 // Clang is looking for the type of "this" 969 970 if (frame == NULL) 971 return; 972 973 974 // Find the block that defines the function represented by "sym_ctx" 975 Block *function_block = sym_ctx.GetFunctionBlock(); 976 977 if (!function_block) 978 return; 979 980 CompilerDeclContext function_decl_ctx = function_block->GetDeclContext(); 981 982 if (!function_decl_ctx) 983 return; 984 985 clang::CXXMethodDecl *method_decl = ClangASTContext::DeclContextGetAsCXXMethodDecl(function_decl_ctx); 986 987 if (method_decl) 988 { 989 clang::CXXRecordDecl *class_decl = method_decl->getParent(); 990 991 QualType class_qual_type(class_decl->getTypeForDecl(), 0); 992 993 TypeFromUser class_user_type (class_qual_type.getAsOpaquePtr(), 994 ClangASTContext::GetASTContext(&class_decl->getASTContext())); 995 996 if (log) 997 { 998 ASTDumper ast_dumper(class_qual_type); 999 log->Printf(" CEDM::FEVD[%u] Adding type for $__lldb_class: %s", current_id, ast_dumper.GetCString()); 1000 } 1001 1002 AddThisType(context, class_user_type, current_id); 1003 1004 if (method_decl->isInstance()) 1005 { 1006 // self is a pointer to the object 1007 1008 QualType class_pointer_type = method_decl->getASTContext().getPointerType(class_qual_type); 1009 1010 TypeFromUser self_user_type(class_pointer_type.getAsOpaquePtr(), 1011 ClangASTContext::GetASTContext(&method_decl->getASTContext())); 1012 1013 m_struct_vars->m_object_pointer_type = self_user_type; 1014 } 1015 } 1016 else 1017 { 1018 // This branch will get hit if we are executing code in the context of a function that 1019 // claims to have an object pointer (through DW_AT_object_pointer?) but is not formally a 1020 // method of the class. In that case, just look up the "this" variable in the current 1021 // scope and use its type. 1022 // FIXME: This code is formally correct, but clang doesn't currently emit DW_AT_object_pointer 1023 // for C++ so it hasn't actually been tested. 1024 1025 VariableList *vars = frame->GetVariableList(false); 1026 1027 lldb::VariableSP this_var = vars->FindVariable(ConstString("this")); 1028 1029 if (this_var && 1030 this_var->IsInScope(frame) && 1031 this_var->LocationIsValidForFrame (frame)) 1032 { 1033 Type *this_type = this_var->GetType(); 1034 1035 if (!this_type) 1036 return; 1037 1038 TypeFromUser pointee_type = this_type->GetForwardCompilerType ().GetPointeeType(); 1039 1040 if (pointee_type.IsValid()) 1041 { 1042 if (log) 1043 { 1044 ASTDumper ast_dumper(pointee_type); 1045 log->Printf(" FEVD[%u] Adding type for $__lldb_class: %s", current_id, ast_dumper.GetCString()); 1046 } 1047 1048 AddThisType(context, pointee_type, current_id); 1049 TypeFromUser this_user_type(this_type->GetFullCompilerType ()); 1050 m_struct_vars->m_object_pointer_type = this_user_type; 1051 return; 1052 } 1053 } 1054 } 1055 1056 return; 1057 } 1058 1059 static ConstString g_lldb_objc_class_name ("$__lldb_objc_class"); 1060 if (name == g_lldb_objc_class_name) 1061 { 1062 // Clang is looking for the type of "*self" 1063 1064 if (!frame) 1065 return; 1066 1067 SymbolContext sym_ctx = frame->GetSymbolContext(lldb::eSymbolContextFunction|lldb::eSymbolContextBlock); 1068 1069 // Find the block that defines the function represented by "sym_ctx" 1070 Block *function_block = sym_ctx.GetFunctionBlock(); 1071 1072 if (!function_block) 1073 return; 1074 1075 CompilerDeclContext function_decl_ctx = function_block->GetDeclContext(); 1076 1077 if (!function_decl_ctx) 1078 return; 1079 1080 clang::ObjCMethodDecl *method_decl = ClangASTContext::DeclContextGetAsObjCMethodDecl(function_decl_ctx); 1081 1082 if (method_decl) 1083 { 1084 ObjCInterfaceDecl* self_interface = method_decl->getClassInterface(); 1085 1086 if (!self_interface) 1087 return; 1088 1089 const clang::Type *interface_type = self_interface->getTypeForDecl(); 1090 1091 if (!interface_type) 1092 return; // This is unlikely, but we have seen crashes where this occurred 1093 1094 TypeFromUser class_user_type(QualType(interface_type, 0).getAsOpaquePtr(), 1095 ClangASTContext::GetASTContext(&method_decl->getASTContext())); 1096 1097 if (log) 1098 { 1099 ASTDumper ast_dumper(interface_type); 1100 log->Printf(" FEVD[%u] Adding type for $__lldb_objc_class: %s", current_id, ast_dumper.GetCString()); 1101 } 1102 1103 AddOneType(context, class_user_type, current_id); 1104 1105 if (method_decl->isInstanceMethod()) 1106 { 1107 // self is a pointer to the object 1108 1109 QualType class_pointer_type = method_decl->getASTContext().getObjCObjectPointerType(QualType(interface_type, 0)); 1110 1111 TypeFromUser self_user_type(class_pointer_type.getAsOpaquePtr(), 1112 ClangASTContext::GetASTContext(&method_decl->getASTContext())); 1113 1114 m_struct_vars->m_object_pointer_type = self_user_type; 1115 } 1116 else 1117 { 1118 // self is a Class pointer 1119 QualType class_type = method_decl->getASTContext().getObjCClassType(); 1120 1121 TypeFromUser self_user_type(class_type.getAsOpaquePtr(), 1122 ClangASTContext::GetASTContext(&method_decl->getASTContext())); 1123 1124 m_struct_vars->m_object_pointer_type = self_user_type; 1125 } 1126 1127 return; 1128 } 1129 else 1130 { 1131 // This branch will get hit if we are executing code in the context of a function that 1132 // claims to have an object pointer (through DW_AT_object_pointer?) but is not formally a 1133 // method of the class. In that case, just look up the "self" variable in the current 1134 // scope and use its type. 1135 1136 VariableList *vars = frame->GetVariableList(false); 1137 1138 lldb::VariableSP self_var = vars->FindVariable(ConstString("self")); 1139 1140 if (self_var && 1141 self_var->IsInScope(frame) && 1142 self_var->LocationIsValidForFrame (frame)) 1143 { 1144 Type *self_type = self_var->GetType(); 1145 1146 if (!self_type) 1147 return; 1148 1149 CompilerType self_clang_type = self_type->GetFullCompilerType (); 1150 1151 if (ClangASTContext::IsObjCClassType(self_clang_type)) 1152 { 1153 return; 1154 } 1155 else if (ClangASTContext::IsObjCObjectPointerType(self_clang_type)) 1156 { 1157 self_clang_type = self_clang_type.GetPointeeType(); 1158 1159 if (!self_clang_type) 1160 return; 1161 1162 if (log) 1163 { 1164 ASTDumper ast_dumper(self_type->GetFullCompilerType ()); 1165 log->Printf(" FEVD[%u] Adding type for $__lldb_objc_class: %s", current_id, ast_dumper.GetCString()); 1166 } 1167 1168 TypeFromUser class_user_type (self_clang_type); 1169 1170 AddOneType(context, class_user_type, current_id); 1171 1172 TypeFromUser self_user_type(self_type->GetFullCompilerType ()); 1173 1174 m_struct_vars->m_object_pointer_type = self_user_type; 1175 return; 1176 } 1177 } 1178 } 1179 1180 return; 1181 } 1182 1183 if (name == ConstString(g_lldb_local_vars_namespace_cstr)) 1184 { 1185 CompilerDeclContext frame_decl_context = sym_ctx.block != nullptr ? 1186 sym_ctx.block->GetDeclContext() : 1187 CompilerDeclContext(); 1188 1189 if (frame_decl_context) 1190 { 1191 ClangASTContext *ast = llvm::dyn_cast_or_null<ClangASTContext>(frame_decl_context.GetTypeSystem()); 1192 1193 if (ast) 1194 { 1195 clang::NamespaceDecl *namespace_decl = ClangASTContext::GetUniqueNamespaceDeclaration( 1196 m_ast_context, name_unique_cstr, nullptr); 1197 if (namespace_decl) 1198 { 1199 context.AddNamedDecl(namespace_decl); 1200 clang::DeclContext *clang_decl_ctx = clang::Decl::castToDeclContext(namespace_decl); 1201 clang_decl_ctx->setHasExternalVisibleStorage(true); 1202 } 1203 } 1204 } 1205 1206 return; 1207 } 1208 1209 // any other $__lldb names should be weeded out now 1210 if (!::strncmp(name_unique_cstr, "$__lldb", sizeof("$__lldb") - 1)) 1211 return; 1212 1213 ExpressionVariableSP pvar_sp(m_parser_vars->m_persistent_vars->GetVariable(name)); 1214 1215 if (pvar_sp) 1216 { 1217 AddOneVariable(context, pvar_sp, current_id); 1218 return; 1219 } 1220 1221 const char *reg_name(&name.GetCString()[1]); 1222 1223 if (m_parser_vars->m_exe_ctx.GetRegisterContext()) 1224 { 1225 const RegisterInfo *reg_info(m_parser_vars->m_exe_ctx.GetRegisterContext()->GetRegisterInfoByName(reg_name)); 1226 1227 if (reg_info) 1228 { 1229 if (log) 1230 log->Printf(" CEDM::FEVD[%u] Found register %s", current_id, reg_info->name); 1231 1232 AddOneRegister(context, reg_info, current_id); 1233 } 1234 } 1235 } 1236 else 1237 { 1238 ValueObjectSP valobj; 1239 VariableSP var; 1240 1241 bool local_var_lookup = !namespace_decl || 1242 (namespace_decl.GetName() == ConstString(g_lldb_local_vars_namespace_cstr)); 1243 if (frame && local_var_lookup) 1244 { 1245 CompilerDeclContext compiler_decl_context = sym_ctx.block != nullptr ? sym_ctx.block->GetDeclContext() : CompilerDeclContext(); 1246 1247 if (compiler_decl_context) 1248 { 1249 // Make sure that the variables are parsed so that we have the declarations. 1250 VariableListSP vars = frame->GetInScopeVariableList(true); 1251 for (size_t i = 0; i < vars->GetSize(); i++) 1252 vars->GetVariableAtIndex(i)->GetDecl(); 1253 1254 // Search for declarations matching the name. Do not include imported decls 1255 // in the search if we are looking for decls in the artificial namespace 1256 // $__lldb_local_vars. 1257 std::vector<CompilerDecl> found_decls = compiler_decl_context.FindDeclByName(name, namespace_decl.IsValid()); 1258 1259 bool variable_found = false; 1260 for (CompilerDecl decl : found_decls) 1261 { 1262 var = decl.GetAsVariable(); 1263 if (var) 1264 { 1265 variable_found = true; 1266 valobj = ValueObjectVariable::Create(frame, var); 1267 AddOneVariable(context, var, valobj, current_id); 1268 context.m_found.variable = true; 1269 } 1270 } 1271 if (variable_found) 1272 return; 1273 } 1274 } 1275 if (target) 1276 { 1277 var = FindGlobalVariable (*target, 1278 module_sp, 1279 name, 1280 &namespace_decl, 1281 NULL); 1282 1283 if (var) 1284 { 1285 valobj = ValueObjectVariable::Create(target, var); 1286 AddOneVariable(context, var, valobj, current_id); 1287 context.m_found.variable = true; 1288 return; 1289 } 1290 } 1291 1292 std::vector<clang::NamedDecl *> decls_from_modules; 1293 1294 if (target) 1295 { 1296 if (ClangModulesDeclVendor *decl_vendor = target->GetClangModulesDeclVendor()) 1297 { 1298 decl_vendor->FindDecls(name, false, UINT32_MAX, decls_from_modules); 1299 } 1300 } 1301 1302 if (!context.m_found.variable) 1303 { 1304 const bool include_inlines = false; 1305 const bool append = false; 1306 1307 if (namespace_decl && module_sp) 1308 { 1309 const bool include_symbols = false; 1310 1311 module_sp->FindFunctions(name, 1312 &namespace_decl, 1313 eFunctionNameTypeBase, 1314 include_symbols, 1315 include_inlines, 1316 append, 1317 sc_list); 1318 } 1319 else if (target && !namespace_decl) 1320 { 1321 const bool include_symbols = true; 1322 1323 // TODO Fix FindFunctions so that it doesn't return 1324 // instance methods for eFunctionNameTypeBase. 1325 1326 target->GetImages().FindFunctions(name, 1327 eFunctionNameTypeFull, 1328 include_symbols, 1329 include_inlines, 1330 append, 1331 sc_list); 1332 } 1333 1334 // If we found more than one function, see if we can use the 1335 // frame's decl context to remove functions that are shadowed 1336 // by other functions which match in type but are nearer in scope. 1337 // 1338 // AddOneFunction will not add a function whose type has already been 1339 // added, so if there's another function in the list with a matching 1340 // type, check to see if their decl context is a parent of the current 1341 // frame's or was imported via a and using statement, and pick the 1342 // best match according to lookup rules. 1343 if (sc_list.GetSize() > 1) 1344 { 1345 // Collect some info about our frame's context. 1346 StackFrame *frame = m_parser_vars->m_exe_ctx.GetFramePtr(); 1347 SymbolContext frame_sym_ctx; 1348 if (frame != nullptr) 1349 frame_sym_ctx = frame->GetSymbolContext(lldb::eSymbolContextFunction|lldb::eSymbolContextBlock); 1350 CompilerDeclContext frame_decl_context = frame_sym_ctx.block != nullptr ? frame_sym_ctx.block->GetDeclContext() : CompilerDeclContext(); 1351 1352 // We can't do this without a compiler decl context for our frame. 1353 if (frame_decl_context) 1354 { 1355 clang::DeclContext *frame_decl_ctx = (clang::DeclContext *)frame_decl_context.GetOpaqueDeclContext(); 1356 ClangASTContext *ast = llvm::dyn_cast_or_null<ClangASTContext>(frame_decl_context.GetTypeSystem()); 1357 1358 // Structure to hold the info needed when comparing function 1359 // declarations. 1360 struct FuncDeclInfo 1361 { 1362 ConstString m_name; 1363 CompilerType m_copied_type; 1364 uint32_t m_decl_lvl; 1365 SymbolContext m_sym_ctx; 1366 }; 1367 1368 // First, symplify things by looping through the symbol contexts 1369 // to remove unwanted functions and separate out the functions we 1370 // want to compare and prune into a separate list. 1371 // Cache the info needed about the function declarations in a 1372 // vector for efficiency. 1373 SymbolContextList sc_sym_list; 1374 uint32_t num_indices = sc_list.GetSize(); 1375 std::vector<FuncDeclInfo> fdi_cache; 1376 fdi_cache.reserve(num_indices); 1377 for (uint32_t index = 0; index < num_indices; ++index) 1378 { 1379 FuncDeclInfo fdi; 1380 SymbolContext sym_ctx; 1381 sc_list.GetContextAtIndex(index, sym_ctx); 1382 1383 // We don't know enough about symbols to compare them, 1384 // but we should keep them in the list. 1385 Function *function = sym_ctx.function; 1386 if (!function) 1387 { 1388 sc_sym_list.Append(sym_ctx); 1389 continue; 1390 } 1391 // Filter out functions without declaration contexts, as well as 1392 // class/instance methods, since they'll be skipped in the 1393 // code that follows anyway. 1394 CompilerDeclContext func_decl_context = function->GetDeclContext(); 1395 if (!func_decl_context || func_decl_context.IsClassMethod(nullptr, nullptr, nullptr)) 1396 continue; 1397 // We can only prune functions for which we can copy the type. 1398 CompilerType func_clang_type = function->GetType()->GetFullCompilerType(); 1399 CompilerType copied_func_type = GuardedCopyType(func_clang_type); 1400 if (!copied_func_type) 1401 { 1402 sc_sym_list.Append(sym_ctx); 1403 continue; 1404 } 1405 1406 fdi.m_sym_ctx = sym_ctx; 1407 fdi.m_name = function->GetName(); 1408 fdi.m_copied_type = copied_func_type; 1409 fdi.m_decl_lvl = LLDB_INVALID_DECL_LEVEL; 1410 if (fdi.m_copied_type && func_decl_context) 1411 { 1412 // Call CountDeclLevels to get the number of parent scopes we 1413 // have to look through before we find the function declaration. 1414 // When comparing functions of the same type, the one with a 1415 // lower count will be closer to us in the lookup scope and 1416 // shadows the other. 1417 clang::DeclContext *func_decl_ctx = (clang::DeclContext *)func_decl_context.GetOpaqueDeclContext(); 1418 fdi.m_decl_lvl = ast->CountDeclLevels(frame_decl_ctx, 1419 func_decl_ctx, 1420 &fdi.m_name, 1421 &fdi.m_copied_type); 1422 } 1423 fdi_cache.emplace_back(fdi); 1424 } 1425 1426 // Loop through the functions in our cache looking for matching types, 1427 // then compare their scope levels to see which is closer. 1428 std::multimap<CompilerType, const FuncDeclInfo*> matches; 1429 for (const FuncDeclInfo &fdi : fdi_cache) 1430 { 1431 const CompilerType t = fdi.m_copied_type; 1432 auto q = matches.find(t); 1433 if (q != matches.end()) 1434 { 1435 if (q->second->m_decl_lvl > fdi.m_decl_lvl) 1436 // This function is closer; remove the old set. 1437 matches.erase(t); 1438 else if (q->second->m_decl_lvl < fdi.m_decl_lvl) 1439 // The functions in our set are closer - skip this one. 1440 continue; 1441 } 1442 matches.insert(std::make_pair(t, &fdi)); 1443 } 1444 1445 // Loop through our matches and add their symbol contexts to our list. 1446 SymbolContextList sc_func_list; 1447 for (const auto &q : matches) 1448 sc_func_list.Append(q.second->m_sym_ctx); 1449 1450 // Rejoin the lists with the functions in front. 1451 sc_list = sc_func_list; 1452 sc_list.Append(sc_sym_list); 1453 } 1454 } 1455 1456 if (sc_list.GetSize()) 1457 { 1458 Symbol *extern_symbol = NULL; 1459 Symbol *non_extern_symbol = NULL; 1460 1461 for (uint32_t index = 0, num_indices = sc_list.GetSize(); 1462 index < num_indices; 1463 ++index) 1464 { 1465 SymbolContext sym_ctx; 1466 sc_list.GetContextAtIndex(index, sym_ctx); 1467 1468 if (sym_ctx.function) 1469 { 1470 CompilerDeclContext decl_ctx = sym_ctx.function->GetDeclContext(); 1471 1472 if (!decl_ctx) 1473 continue; 1474 1475 // Filter out class/instance methods. 1476 if (decl_ctx.IsClassMethod(nullptr, nullptr, nullptr)) 1477 continue; 1478 1479 AddOneFunction(context, sym_ctx.function, NULL, current_id); 1480 context.m_found.function_with_type_info = true; 1481 context.m_found.function = true; 1482 } 1483 else if (sym_ctx.symbol) 1484 { 1485 if (sym_ctx.symbol->GetType() == eSymbolTypeReExported && target) 1486 { 1487 sym_ctx.symbol = sym_ctx.symbol->ResolveReExportedSymbol(*target); 1488 if (sym_ctx.symbol == NULL) 1489 continue; 1490 } 1491 1492 if (sym_ctx.symbol->IsExternal()) 1493 extern_symbol = sym_ctx.symbol; 1494 else 1495 non_extern_symbol = sym_ctx.symbol; 1496 } 1497 } 1498 1499 if (!context.m_found.function_with_type_info) 1500 { 1501 for (clang::NamedDecl *decl : decls_from_modules) 1502 { 1503 if (llvm::isa<clang::FunctionDecl>(decl)) 1504 { 1505 clang::NamedDecl *copied_decl = llvm::cast<FunctionDecl>(m_ast_importer_sp->CopyDecl(m_ast_context, &decl->getASTContext(), decl)); 1506 context.AddNamedDecl(copied_decl); 1507 context.m_found.function_with_type_info = true; 1508 } 1509 } 1510 } 1511 1512 if (!context.m_found.function_with_type_info) 1513 { 1514 if (extern_symbol) 1515 { 1516 AddOneFunction (context, NULL, extern_symbol, current_id); 1517 context.m_found.function = true; 1518 } 1519 else if (non_extern_symbol) 1520 { 1521 AddOneFunction (context, NULL, non_extern_symbol, current_id); 1522 context.m_found.function = true; 1523 } 1524 } 1525 } 1526 1527 if (!context.m_found.function_with_type_info) 1528 { 1529 // Try the modules next. 1530 1531 do 1532 { 1533 if (ClangModulesDeclVendor *modules_decl_vendor = m_target->GetClangModulesDeclVendor()) 1534 { 1535 bool append = false; 1536 uint32_t max_matches = 1; 1537 std::vector <clang::NamedDecl *> decls; 1538 1539 if (!modules_decl_vendor->FindDecls(name, 1540 append, 1541 max_matches, 1542 decls)) 1543 break; 1544 1545 clang::NamedDecl *const decl_from_modules = decls[0]; 1546 1547 if (llvm::isa<clang::FunctionDecl>(decl_from_modules)) 1548 { 1549 if (log) 1550 { 1551 log->Printf(" CAS::FEVD[%u] Matching function found for \"%s\" in the modules", 1552 current_id, 1553 name.GetCString()); 1554 } 1555 1556 clang::Decl *copied_decl = m_ast_importer_sp->CopyDecl(m_ast_context, &decl_from_modules->getASTContext(), decl_from_modules); 1557 clang::FunctionDecl *copied_function_decl = copied_decl ? dyn_cast<clang::FunctionDecl>(copied_decl) : nullptr; 1558 1559 if (!copied_function_decl) 1560 { 1561 if (log) 1562 log->Printf(" CAS::FEVD[%u] - Couldn't export a function declaration from the modules", 1563 current_id); 1564 1565 break; 1566 } 1567 1568 MaybeRegisterFunctionBody(copied_function_decl); 1569 1570 context.AddNamedDecl(copied_function_decl); 1571 1572 context.m_found.function_with_type_info = true; 1573 context.m_found.function = true; 1574 } 1575 else if (llvm::isa<clang::VarDecl>(decl_from_modules)) 1576 { 1577 if (log) 1578 { 1579 log->Printf(" CAS::FEVD[%u] Matching variable found for \"%s\" in the modules", 1580 current_id, 1581 name.GetCString()); 1582 } 1583 1584 clang::Decl *copied_decl = m_ast_importer_sp->CopyDecl(m_ast_context, &decl_from_modules->getASTContext(), decl_from_modules); 1585 clang::VarDecl *copied_var_decl = copied_decl ? dyn_cast_or_null<clang::VarDecl>(copied_decl) : nullptr; 1586 1587 if (!copied_var_decl) 1588 { 1589 if (log) 1590 log->Printf(" CAS::FEVD[%u] - Couldn't export a variable declaration from the modules", 1591 current_id); 1592 1593 break; 1594 } 1595 1596 context.AddNamedDecl(copied_var_decl); 1597 1598 context.m_found.variable = true; 1599 } 1600 } 1601 } while (0); 1602 } 1603 1604 if (target && !context.m_found.variable && !namespace_decl) 1605 { 1606 // We couldn't find a non-symbol variable for this. Now we'll hunt for a generic 1607 // data symbol, and -- if it is found -- treat it as a variable. 1608 1609 const Symbol *data_symbol = FindGlobalDataSymbol(*target, name); 1610 1611 if (data_symbol) 1612 { 1613 std::string warning("got name from symbols: "); 1614 warning.append(name.AsCString()); 1615 const unsigned diag_id = m_ast_context->getDiagnostics().getCustomDiagID(clang::DiagnosticsEngine::Level::Warning, "%0"); 1616 m_ast_context->getDiagnostics().Report(diag_id) << warning.c_str(); 1617 AddOneGenericVariable(context, *data_symbol, current_id); 1618 context.m_found.variable = true; 1619 } 1620 } 1621 } 1622 } 1623 } 1624 1625 //static opaque_compiler_type_t 1626 //MaybePromoteToBlockPointerType 1627 //( 1628 // ASTContext *ast_context, 1629 // opaque_compiler_type_t candidate_type 1630 //) 1631 //{ 1632 // if (!candidate_type) 1633 // return candidate_type; 1634 // 1635 // QualType candidate_qual_type = QualType::getFromOpaquePtr(candidate_type); 1636 // 1637 // const PointerType *candidate_pointer_type = dyn_cast<PointerType>(candidate_qual_type); 1638 // 1639 // if (!candidate_pointer_type) 1640 // return candidate_type; 1641 // 1642 // QualType pointee_qual_type = candidate_pointer_type->getPointeeType(); 1643 // 1644 // const RecordType *pointee_record_type = dyn_cast<RecordType>(pointee_qual_type); 1645 // 1646 // if (!pointee_record_type) 1647 // return candidate_type; 1648 // 1649 // RecordDecl *pointee_record_decl = pointee_record_type->getDecl(); 1650 // 1651 // if (!pointee_record_decl->isRecord()) 1652 // return candidate_type; 1653 // 1654 // if (!pointee_record_decl->getName().startswith(llvm::StringRef("__block_literal_"))) 1655 // return candidate_type; 1656 // 1657 // QualType generic_function_type = ast_context->getFunctionNoProtoType(ast_context->UnknownAnyTy); 1658 // QualType block_pointer_type = ast_context->getBlockPointerType(generic_function_type); 1659 // 1660 // return block_pointer_type.getAsOpaquePtr(); 1661 //} 1662 1663 bool 1664 ClangExpressionDeclMap::GetVariableValue (VariableSP &var, 1665 lldb_private::Value &var_location, 1666 TypeFromUser *user_type, 1667 TypeFromParser *parser_type) 1668 { 1669 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1670 1671 Type *var_type = var->GetType(); 1672 1673 if (!var_type) 1674 { 1675 if (log) 1676 log->PutCString("Skipped a definition because it has no type"); 1677 return false; 1678 } 1679 1680 CompilerType var_clang_type = var_type->GetFullCompilerType (); 1681 1682 if (!var_clang_type) 1683 { 1684 if (log) 1685 log->PutCString("Skipped a definition because it has no Clang type"); 1686 return false; 1687 } 1688 1689 ClangASTContext *clang_ast = llvm::dyn_cast_or_null<ClangASTContext>(var_type->GetForwardCompilerType().GetTypeSystem()); 1690 1691 if (!clang_ast) 1692 { 1693 if (log) 1694 log->PutCString("Skipped a definition because it has no Clang AST"); 1695 return false; 1696 } 1697 1698 1699 ASTContext *ast = clang_ast->getASTContext(); 1700 1701 if (!ast) 1702 { 1703 if (log) 1704 log->PutCString("There is no AST context for the current execution context"); 1705 return false; 1706 } 1707 //var_clang_type = MaybePromoteToBlockPointerType (ast, var_clang_type); 1708 1709 DWARFExpression &var_location_expr = var->LocationExpression(); 1710 1711 Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr(); 1712 Error err; 1713 1714 if (var->GetLocationIsConstantValueData()) 1715 { 1716 DataExtractor const_value_extractor; 1717 1718 if (var_location_expr.GetExpressionData(const_value_extractor)) 1719 { 1720 var_location = Value(const_value_extractor.GetDataStart(), const_value_extractor.GetByteSize()); 1721 var_location.SetValueType(Value::eValueTypeHostAddress); 1722 } 1723 else 1724 { 1725 if (log) 1726 log->Printf("Error evaluating constant variable: %s", err.AsCString()); 1727 return false; 1728 } 1729 } 1730 1731 CompilerType type_to_use = GuardedCopyType(var_clang_type); 1732 1733 if (!type_to_use) 1734 { 1735 if (log) 1736 log->Printf("Couldn't copy a variable's type into the parser's AST context"); 1737 1738 return false; 1739 } 1740 1741 if (parser_type) 1742 *parser_type = TypeFromParser(type_to_use); 1743 1744 if (var_location.GetContextType() == Value::eContextTypeInvalid) 1745 var_location.SetCompilerType(type_to_use); 1746 1747 if (var_location.GetValueType() == Value::eValueTypeFileAddress) 1748 { 1749 SymbolContext var_sc; 1750 var->CalculateSymbolContext(&var_sc); 1751 1752 if (!var_sc.module_sp) 1753 return false; 1754 1755 Address so_addr(var_location.GetScalar().ULongLong(), var_sc.module_sp->GetSectionList()); 1756 1757 lldb::addr_t load_addr = so_addr.GetLoadAddress(target); 1758 1759 if (load_addr != LLDB_INVALID_ADDRESS) 1760 { 1761 var_location.GetScalar() = load_addr; 1762 var_location.SetValueType(Value::eValueTypeLoadAddress); 1763 } 1764 } 1765 1766 if (user_type) 1767 *user_type = TypeFromUser(var_clang_type); 1768 1769 return true; 1770 } 1771 1772 void 1773 ClangExpressionDeclMap::AddOneVariable (NameSearchContext &context, VariableSP var, ValueObjectSP valobj, unsigned int current_id) 1774 { 1775 assert (m_parser_vars.get()); 1776 1777 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1778 1779 TypeFromUser ut; 1780 TypeFromParser pt; 1781 Value var_location; 1782 1783 if (!GetVariableValue (var, var_location, &ut, &pt)) 1784 return; 1785 1786 clang::QualType parser_opaque_type = QualType::getFromOpaquePtr(pt.GetOpaqueQualType()); 1787 1788 if (parser_opaque_type.isNull()) 1789 return; 1790 1791 if (const clang::Type *parser_type = parser_opaque_type.getTypePtr()) 1792 { 1793 if (const TagType *tag_type = dyn_cast<TagType>(parser_type)) 1794 CompleteType(tag_type->getDecl()); 1795 if (const ObjCObjectPointerType *objc_object_ptr_type = dyn_cast<ObjCObjectPointerType>(parser_type)) 1796 CompleteType(objc_object_ptr_type->getInterfaceDecl()); 1797 } 1798 1799 1800 bool is_reference = pt.IsReferenceType(); 1801 1802 NamedDecl *var_decl = NULL; 1803 if (is_reference) 1804 var_decl = context.AddVarDecl(pt); 1805 else 1806 var_decl = context.AddVarDecl(pt.GetLValueReferenceType()); 1807 1808 std::string decl_name(context.m_decl_name.getAsString()); 1809 ConstString entity_name(decl_name.c_str()); 1810 ClangExpressionVariable *entity(new ClangExpressionVariable(valobj)); 1811 m_found_entities.AddNewlyConstructedVariable(entity); 1812 1813 assert (entity); 1814 entity->EnableParserVars(GetParserID()); 1815 ClangExpressionVariable::ParserVars *parser_vars = entity->GetParserVars(GetParserID()); 1816 parser_vars->m_parser_type = pt; 1817 parser_vars->m_named_decl = var_decl; 1818 parser_vars->m_llvm_value = NULL; 1819 parser_vars->m_lldb_value = var_location; 1820 parser_vars->m_lldb_var = var; 1821 1822 if (is_reference) 1823 entity->m_flags |= ClangExpressionVariable::EVTypeIsReference; 1824 1825 if (log) 1826 { 1827 ASTDumper orig_dumper(ut.GetOpaqueQualType()); 1828 ASTDumper ast_dumper(var_decl); 1829 log->Printf(" CEDM::FEVD[%u] Found variable %s, returned %s (original %s)", current_id, decl_name.c_str(), ast_dumper.GetCString(), orig_dumper.GetCString()); 1830 } 1831 } 1832 1833 void 1834 ClangExpressionDeclMap::AddOneVariable(NameSearchContext &context, 1835 ExpressionVariableSP &pvar_sp, 1836 unsigned int current_id) 1837 { 1838 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1839 1840 TypeFromUser user_type (llvm::cast<ClangExpressionVariable>(pvar_sp.get())->GetTypeFromUser()); 1841 1842 TypeFromParser parser_type (GuardedCopyType(user_type)); 1843 1844 if (!parser_type.GetOpaqueQualType()) 1845 { 1846 if (log) 1847 log->Printf(" CEDM::FEVD[%u] Couldn't import type for pvar %s", current_id, pvar_sp->GetName().GetCString()); 1848 return; 1849 } 1850 1851 NamedDecl *var_decl = context.AddVarDecl(parser_type.GetLValueReferenceType()); 1852 1853 llvm::cast<ClangExpressionVariable>(pvar_sp.get())->EnableParserVars(GetParserID()); 1854 ClangExpressionVariable::ParserVars *parser_vars = llvm::cast<ClangExpressionVariable>(pvar_sp.get())->GetParserVars(GetParserID()); 1855 parser_vars->m_parser_type = parser_type; 1856 parser_vars->m_named_decl = var_decl; 1857 parser_vars->m_llvm_value = NULL; 1858 parser_vars->m_lldb_value.Clear(); 1859 1860 if (log) 1861 { 1862 ASTDumper ast_dumper(var_decl); 1863 log->Printf(" CEDM::FEVD[%u] Added pvar %s, returned %s", current_id, pvar_sp->GetName().GetCString(), ast_dumper.GetCString()); 1864 } 1865 } 1866 1867 void 1868 ClangExpressionDeclMap::AddOneGenericVariable(NameSearchContext &context, 1869 const Symbol &symbol, 1870 unsigned int current_id) 1871 { 1872 assert(m_parser_vars.get()); 1873 1874 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1875 1876 Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr(); 1877 1878 if (target == NULL) 1879 return; 1880 1881 ASTContext *scratch_ast_context = target->GetScratchClangASTContext()->getASTContext(); 1882 1883 TypeFromUser user_type (ClangASTContext::GetBasicType(scratch_ast_context, eBasicTypeVoid).GetPointerType().GetLValueReferenceType()); 1884 TypeFromParser parser_type (ClangASTContext::GetBasicType(m_ast_context, eBasicTypeVoid).GetPointerType().GetLValueReferenceType()); 1885 NamedDecl *var_decl = context.AddVarDecl(parser_type); 1886 1887 std::string decl_name(context.m_decl_name.getAsString()); 1888 ConstString entity_name(decl_name.c_str()); 1889 ClangExpressionVariable *entity(new ClangExpressionVariable(m_parser_vars->m_exe_ctx.GetBestExecutionContextScope (), 1890 entity_name, 1891 user_type, 1892 m_parser_vars->m_target_info.byte_order, 1893 m_parser_vars->m_target_info.address_byte_size)); 1894 m_found_entities.AddNewlyConstructedVariable(entity); 1895 1896 entity->EnableParserVars(GetParserID()); 1897 ClangExpressionVariable::ParserVars *parser_vars = entity->GetParserVars(GetParserID()); 1898 1899 const Address symbol_address = symbol.GetAddress(); 1900 lldb::addr_t symbol_load_addr = symbol_address.GetLoadAddress(target); 1901 1902 //parser_vars->m_lldb_value.SetContext(Value::eContextTypeClangType, user_type.GetOpaqueQualType()); 1903 parser_vars->m_lldb_value.SetCompilerType(user_type); 1904 parser_vars->m_lldb_value.GetScalar() = symbol_load_addr; 1905 parser_vars->m_lldb_value.SetValueType(Value::eValueTypeLoadAddress); 1906 1907 parser_vars->m_parser_type = parser_type; 1908 parser_vars->m_named_decl = var_decl; 1909 parser_vars->m_llvm_value = NULL; 1910 parser_vars->m_lldb_sym = &symbol; 1911 1912 if (log) 1913 { 1914 ASTDumper ast_dumper(var_decl); 1915 1916 log->Printf(" CEDM::FEVD[%u] Found variable %s, returned %s", current_id, decl_name.c_str(), ast_dumper.GetCString()); 1917 } 1918 } 1919 1920 bool 1921 ClangExpressionDeclMap::ResolveUnknownTypes() 1922 { 1923 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1924 Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr(); 1925 1926 ClangASTContext *scratch_ast_context = target->GetScratchClangASTContext(); 1927 1928 for (size_t index = 0, num_entities = m_found_entities.GetSize(); 1929 index < num_entities; 1930 ++index) 1931 { 1932 ExpressionVariableSP entity = m_found_entities.GetVariableAtIndex(index); 1933 1934 ClangExpressionVariable::ParserVars *parser_vars = llvm::cast<ClangExpressionVariable>(entity.get())->GetParserVars(GetParserID()); 1935 1936 if (entity->m_flags & ClangExpressionVariable::EVUnknownType) 1937 { 1938 const NamedDecl *named_decl = parser_vars->m_named_decl; 1939 const VarDecl *var_decl = dyn_cast<VarDecl>(named_decl); 1940 1941 if (!var_decl) 1942 { 1943 if (log) 1944 log->Printf("Entity of unknown type does not have a VarDecl"); 1945 return false; 1946 } 1947 1948 if (log) 1949 { 1950 ASTDumper ast_dumper(const_cast<VarDecl*>(var_decl)); 1951 log->Printf("Variable of unknown type now has Decl %s", ast_dumper.GetCString()); 1952 } 1953 1954 QualType var_type = var_decl->getType(); 1955 TypeFromParser parser_type(var_type.getAsOpaquePtr(), ClangASTContext::GetASTContext(&var_decl->getASTContext())); 1956 1957 lldb::opaque_compiler_type_t copied_type = m_ast_importer_sp->CopyType(scratch_ast_context->getASTContext(), &var_decl->getASTContext(), var_type.getAsOpaquePtr()); 1958 1959 if (!copied_type) 1960 { 1961 if (log) 1962 log->Printf("ClangExpressionDeclMap::ResolveUnknownType - Couldn't import the type for a variable"); 1963 1964 return (bool) lldb::ExpressionVariableSP(); 1965 } 1966 1967 TypeFromUser user_type(copied_type, scratch_ast_context); 1968 1969 // parser_vars->m_lldb_value.SetContext(Value::eContextTypeClangType, user_type.GetOpaqueQualType()); 1970 parser_vars->m_lldb_value.SetCompilerType(user_type); 1971 parser_vars->m_parser_type = parser_type; 1972 1973 entity->SetCompilerType(user_type); 1974 1975 entity->m_flags &= ~(ClangExpressionVariable::EVUnknownType); 1976 } 1977 } 1978 1979 return true; 1980 } 1981 1982 void 1983 ClangExpressionDeclMap::AddOneRegister (NameSearchContext &context, 1984 const RegisterInfo *reg_info, 1985 unsigned int current_id) 1986 { 1987 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1988 1989 CompilerType clang_type = ClangASTContext::GetBuiltinTypeForEncodingAndBitSize (m_ast_context, 1990 reg_info->encoding, 1991 reg_info->byte_size * 8); 1992 1993 if (!clang_type) 1994 { 1995 if (log) 1996 log->Printf(" Tried to add a type for %s, but couldn't get one", context.m_decl_name.getAsString().c_str()); 1997 return; 1998 } 1999 2000 TypeFromParser parser_clang_type (clang_type); 2001 2002 NamedDecl *var_decl = context.AddVarDecl(parser_clang_type); 2003 2004 ClangExpressionVariable *entity(new ClangExpressionVariable(m_parser_vars->m_exe_ctx.GetBestExecutionContextScope(), 2005 m_parser_vars->m_target_info.byte_order, 2006 m_parser_vars->m_target_info.address_byte_size)); 2007 m_found_entities.AddNewlyConstructedVariable(entity); 2008 2009 std::string decl_name(context.m_decl_name.getAsString()); 2010 entity->SetName (ConstString (decl_name.c_str())); 2011 entity->SetRegisterInfo (reg_info); 2012 entity->EnableParserVars(GetParserID()); 2013 ClangExpressionVariable::ParserVars *parser_vars = entity->GetParserVars(GetParserID()); 2014 parser_vars->m_parser_type = parser_clang_type; 2015 parser_vars->m_named_decl = var_decl; 2016 parser_vars->m_llvm_value = NULL; 2017 parser_vars->m_lldb_value.Clear(); 2018 entity->m_flags |= ClangExpressionVariable::EVBareRegister; 2019 2020 if (log) 2021 { 2022 ASTDumper ast_dumper(var_decl); 2023 log->Printf(" CEDM::FEVD[%d] Added register %s, returned %s", current_id, context.m_decl_name.getAsString().c_str(), ast_dumper.GetCString()); 2024 } 2025 } 2026 2027 void 2028 ClangExpressionDeclMap::AddOneFunction (NameSearchContext &context, 2029 Function* function, 2030 Symbol* symbol, 2031 unsigned int current_id) 2032 { 2033 assert (m_parser_vars.get()); 2034 2035 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 2036 2037 NamedDecl *function_decl = NULL; 2038 Address fun_address; 2039 CompilerType function_clang_type; 2040 2041 bool is_indirect_function = false; 2042 2043 if (function) 2044 { 2045 Type *function_type = function->GetType(); 2046 2047 const lldb::LanguageType comp_unit_language = function->GetCompileUnit()->GetLanguage(); 2048 const bool extern_c = Language::LanguageIsC(comp_unit_language) || 2049 (Language::LanguageIsObjC(comp_unit_language) && 2050 !Language::LanguageIsCPlusPlus(comp_unit_language)); 2051 2052 if (!extern_c) 2053 { 2054 TypeSystem *type_system = function->GetDeclContext().GetTypeSystem(); 2055 if (ClangASTContext *src_ast = llvm::dyn_cast<ClangASTContext>(type_system)) 2056 { 2057 clang::DeclContext *src_decl_context = (clang::DeclContext*)function->GetDeclContext().GetOpaqueDeclContext(); 2058 clang::FunctionDecl *src_function_decl = llvm::dyn_cast_or_null<clang::FunctionDecl>(src_decl_context); 2059 2060 if (src_function_decl) 2061 { 2062 if (clang::FunctionDecl *copied_function_decl = llvm::dyn_cast_or_null<clang::FunctionDecl>(m_ast_importer_sp->CopyDecl(m_ast_context, src_ast->getASTContext(), src_function_decl))) 2063 { 2064 if (log) 2065 { 2066 ASTDumper ast_dumper((clang::Decl*)copied_function_decl); 2067 2068 StreamString ss; 2069 2070 function->DumpSymbolContext(&ss); 2071 2072 log->Printf(" CEDM::FEVD[%u] Imported decl for function %s (description %s), returned %s", 2073 current_id, 2074 copied_function_decl->getName().str().c_str(), 2075 ss.GetData(), 2076 ast_dumper.GetCString()); 2077 2078 } 2079 2080 context.AddNamedDecl(copied_function_decl); 2081 return; 2082 } 2083 else 2084 { 2085 if (log) 2086 { 2087 log->Printf (" Failed to import the function decl for '%s'", 2088 src_function_decl->getName().str().c_str()); 2089 } 2090 } 2091 } 2092 } 2093 } 2094 2095 if (!function_type) 2096 { 2097 if (log) 2098 log->PutCString(" Skipped a function because it has no type"); 2099 return; 2100 } 2101 2102 function_clang_type = function_type->GetFullCompilerType (); 2103 2104 if (!function_clang_type) 2105 { 2106 if (log) 2107 log->PutCString(" Skipped a function because it has no Clang type"); 2108 return; 2109 } 2110 2111 fun_address = function->GetAddressRange().GetBaseAddress(); 2112 2113 CompilerType copied_function_type = GuardedCopyType(function_clang_type); 2114 if (copied_function_type) 2115 { 2116 function_decl = context.AddFunDecl(copied_function_type, extern_c); 2117 2118 if (!function_decl) 2119 { 2120 if (log) 2121 { 2122 log->Printf (" Failed to create a function decl for '%s' {0x%8.8" PRIx64 "}", 2123 function_type->GetName().GetCString(), 2124 function_type->GetID()); 2125 } 2126 2127 return; 2128 } 2129 } 2130 else 2131 { 2132 // We failed to copy the type we found 2133 if (log) 2134 { 2135 log->Printf (" Failed to import the function type '%s' {0x%8.8" PRIx64 "} into the expression parser AST contenxt", 2136 function_type->GetName().GetCString(), 2137 function_type->GetID()); 2138 } 2139 2140 return; 2141 } 2142 } 2143 else if (symbol) 2144 { 2145 fun_address = symbol->GetAddress(); 2146 function_decl = context.AddGenericFunDecl(); 2147 is_indirect_function = symbol->IsIndirect(); 2148 } 2149 else 2150 { 2151 if (log) 2152 log->PutCString(" AddOneFunction called with no function and no symbol"); 2153 return; 2154 } 2155 2156 Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr(); 2157 2158 lldb::addr_t load_addr = fun_address.GetCallableLoadAddress(target, is_indirect_function); 2159 2160 ClangExpressionVariable *entity(new ClangExpressionVariable (m_parser_vars->m_exe_ctx.GetBestExecutionContextScope (), 2161 m_parser_vars->m_target_info.byte_order, 2162 m_parser_vars->m_target_info.address_byte_size)); 2163 m_found_entities.AddNewlyConstructedVariable(entity); 2164 2165 std::string decl_name(context.m_decl_name.getAsString()); 2166 entity->SetName(ConstString(decl_name.c_str())); 2167 entity->SetCompilerType (function_clang_type); 2168 entity->EnableParserVars(GetParserID()); 2169 2170 ClangExpressionVariable::ParserVars *parser_vars = entity->GetParserVars(GetParserID()); 2171 2172 if (load_addr != LLDB_INVALID_ADDRESS) 2173 { 2174 parser_vars->m_lldb_value.SetValueType(Value::eValueTypeLoadAddress); 2175 parser_vars->m_lldb_value.GetScalar() = load_addr; 2176 } 2177 else 2178 { 2179 // We have to try finding a file address. 2180 2181 lldb::addr_t file_addr = fun_address.GetFileAddress(); 2182 2183 parser_vars->m_lldb_value.SetValueType(Value::eValueTypeFileAddress); 2184 parser_vars->m_lldb_value.GetScalar() = file_addr; 2185 } 2186 2187 2188 parser_vars->m_named_decl = function_decl; 2189 parser_vars->m_llvm_value = NULL; 2190 2191 if (log) 2192 { 2193 ASTDumper ast_dumper(function_decl); 2194 2195 StreamString ss; 2196 2197 fun_address.Dump(&ss, m_parser_vars->m_exe_ctx.GetBestExecutionContextScope(), Address::DumpStyleResolvedDescription); 2198 2199 log->Printf(" CEDM::FEVD[%u] Found %s function %s (description %s), returned %s", 2200 current_id, 2201 (function ? "specific" : "generic"), 2202 decl_name.c_str(), 2203 ss.GetData(), 2204 ast_dumper.GetCString()); 2205 } 2206 } 2207 2208 void 2209 ClangExpressionDeclMap::AddThisType(NameSearchContext &context, 2210 TypeFromUser &ut, 2211 unsigned int current_id) 2212 { 2213 CompilerType copied_clang_type = GuardedCopyType(ut); 2214 2215 if (!copied_clang_type) 2216 { 2217 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 2218 2219 if (log) 2220 log->Printf("ClangExpressionDeclMap::AddThisType - Couldn't import the type"); 2221 2222 return; 2223 } 2224 2225 if (copied_clang_type.IsAggregateType() && copied_clang_type.GetCompleteType ()) 2226 { 2227 CompilerType void_clang_type = ClangASTContext::GetBasicType(m_ast_context, eBasicTypeVoid); 2228 CompilerType void_ptr_clang_type = void_clang_type.GetPointerType(); 2229 2230 CompilerType method_type = ClangASTContext::CreateFunctionType (m_ast_context, 2231 void_clang_type, 2232 &void_ptr_clang_type, 2233 1, 2234 false, 2235 copied_clang_type.GetTypeQualifiers()); 2236 2237 const bool is_virtual = false; 2238 const bool is_static = false; 2239 const bool is_inline = false; 2240 const bool is_explicit = false; 2241 const bool is_attr_used = true; 2242 const bool is_artificial = false; 2243 2244 ClangASTContext::GetASTContext(m_ast_context)-> 2245 AddMethodToCXXRecordType (copied_clang_type.GetOpaqueQualType(), 2246 "$__lldb_expr", 2247 method_type, 2248 lldb::eAccessPublic, 2249 is_virtual, 2250 is_static, 2251 is_inline, 2252 is_explicit, 2253 is_attr_used, 2254 is_artificial); 2255 } 2256 2257 if (!copied_clang_type.IsValid()) 2258 return; 2259 2260 TypeSourceInfo *type_source_info = m_ast_context->getTrivialTypeSourceInfo(QualType::getFromOpaquePtr(copied_clang_type.GetOpaqueQualType())); 2261 2262 if (!type_source_info) 2263 return; 2264 2265 // Construct a typedef type because if "*this" is a templated type we can't just return ClassTemplateSpecializationDecls in response to name queries. 2266 // Using a typedef makes this much more robust. 2267 2268 TypedefDecl *typedef_decl = TypedefDecl::Create(*m_ast_context, 2269 m_ast_context->getTranslationUnitDecl(), 2270 SourceLocation(), 2271 SourceLocation(), 2272 context.m_decl_name.getAsIdentifierInfo(), 2273 type_source_info); 2274 2275 2276 if (!typedef_decl) 2277 return; 2278 2279 context.AddNamedDecl(typedef_decl); 2280 2281 return; 2282 } 2283 2284 void 2285 ClangExpressionDeclMap::AddOneType(NameSearchContext &context, 2286 TypeFromUser &ut, 2287 unsigned int current_id) 2288 { 2289 CompilerType copied_clang_type = GuardedCopyType(ut); 2290 2291 if (!copied_clang_type) 2292 { 2293 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 2294 2295 if (log) 2296 log->Printf("ClangExpressionDeclMap::AddOneType - Couldn't import the type"); 2297 2298 return; 2299 } 2300 2301 context.AddTypeDecl(copied_clang_type); 2302 } 2303