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 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 882 883 SymbolContextList sc_list; 884 885 const ConstString name(context.m_decl_name.getAsString().c_str()); 886 887 const char *name_unique_cstr = name.GetCString(); 888 889 if (name_unique_cstr == NULL) 890 return; 891 892 static ConstString id_name("id"); 893 static ConstString Class_name("Class"); 894 895 if (name == id_name || name == Class_name) 896 return; 897 898 // Only look for functions by name out in our symbols if the function 899 // doesn't start with our phony prefix of '$' 900 Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr(); 901 StackFrame *frame = m_parser_vars->m_exe_ctx.GetFramePtr(); 902 SymbolContext sym_ctx; 903 if (frame != nullptr) 904 sym_ctx = frame->GetSymbolContext(lldb::eSymbolContextFunction|lldb::eSymbolContextBlock); 905 if (name_unique_cstr[0] == '$' && !namespace_decl) 906 { 907 static ConstString g_lldb_class_name ("$__lldb_class"); 908 909 if (name == g_lldb_class_name) 910 { 911 // Clang is looking for the type of "this" 912 913 if (frame == NULL) 914 return; 915 916 917 // Find the block that defines the function represented by "sym_ctx" 918 Block *function_block = sym_ctx.GetFunctionBlock(); 919 920 if (!function_block) 921 return; 922 923 CompilerDeclContext function_decl_ctx = function_block->GetDeclContext(); 924 925 if (!function_decl_ctx) 926 return; 927 928 clang::CXXMethodDecl *method_decl = ClangASTContext::DeclContextGetAsCXXMethodDecl(function_decl_ctx); 929 930 if (method_decl) 931 { 932 clang::CXXRecordDecl *class_decl = method_decl->getParent(); 933 934 QualType class_qual_type(class_decl->getTypeForDecl(), 0); 935 936 TypeFromUser class_user_type (class_qual_type.getAsOpaquePtr(), 937 ClangASTContext::GetASTContext(&class_decl->getASTContext())); 938 939 if (log) 940 { 941 ASTDumper ast_dumper(class_qual_type); 942 log->Printf(" CEDM::FEVD[%u] Adding type for $__lldb_class: %s", current_id, ast_dumper.GetCString()); 943 } 944 945 AddThisType(context, class_user_type, current_id); 946 947 if (method_decl->isInstance()) 948 { 949 // self is a pointer to the object 950 951 QualType class_pointer_type = method_decl->getASTContext().getPointerType(class_qual_type); 952 953 TypeFromUser self_user_type(class_pointer_type.getAsOpaquePtr(), 954 ClangASTContext::GetASTContext(&method_decl->getASTContext())); 955 956 m_struct_vars->m_object_pointer_type = self_user_type; 957 } 958 } 959 else 960 { 961 // This branch will get hit if we are executing code in the context of a function that 962 // claims to have an object pointer (through DW_AT_object_pointer?) but is not formally a 963 // method of the class. In that case, just look up the "this" variable in the current 964 // scope and use its type. 965 // FIXME: This code is formally correct, but clang doesn't currently emit DW_AT_object_pointer 966 // for C++ so it hasn't actually been tested. 967 968 VariableList *vars = frame->GetVariableList(false); 969 970 lldb::VariableSP this_var = vars->FindVariable(ConstString("this")); 971 972 if (this_var && 973 this_var->IsInScope(frame) && 974 this_var->LocationIsValidForFrame (frame)) 975 { 976 Type *this_type = this_var->GetType(); 977 978 if (!this_type) 979 return; 980 981 TypeFromUser pointee_type = this_type->GetForwardCompilerType ().GetPointeeType(); 982 983 if (pointee_type.IsValid()) 984 { 985 if (log) 986 { 987 ASTDumper ast_dumper(pointee_type); 988 log->Printf(" FEVD[%u] Adding type for $__lldb_class: %s", current_id, ast_dumper.GetCString()); 989 } 990 991 AddThisType(context, pointee_type, current_id); 992 TypeFromUser this_user_type(this_type->GetFullCompilerType ()); 993 m_struct_vars->m_object_pointer_type = this_user_type; 994 return; 995 } 996 } 997 } 998 999 return; 1000 } 1001 1002 static ConstString g_lldb_objc_class_name ("$__lldb_objc_class"); 1003 if (name == g_lldb_objc_class_name) 1004 { 1005 // Clang is looking for the type of "*self" 1006 1007 if (!frame) 1008 return; 1009 1010 SymbolContext sym_ctx = frame->GetSymbolContext(lldb::eSymbolContextFunction|lldb::eSymbolContextBlock); 1011 1012 // Find the block that defines the function represented by "sym_ctx" 1013 Block *function_block = sym_ctx.GetFunctionBlock(); 1014 1015 if (!function_block) 1016 return; 1017 1018 CompilerDeclContext function_decl_ctx = function_block->GetDeclContext(); 1019 1020 if (!function_decl_ctx) 1021 return; 1022 1023 clang::ObjCMethodDecl *method_decl = ClangASTContext::DeclContextGetAsObjCMethodDecl(function_decl_ctx); 1024 1025 if (method_decl) 1026 { 1027 ObjCInterfaceDecl* self_interface = method_decl->getClassInterface(); 1028 1029 if (!self_interface) 1030 return; 1031 1032 const clang::Type *interface_type = self_interface->getTypeForDecl(); 1033 1034 if (!interface_type) 1035 return; // This is unlikely, but we have seen crashes where this occurred 1036 1037 TypeFromUser class_user_type(QualType(interface_type, 0).getAsOpaquePtr(), 1038 ClangASTContext::GetASTContext(&method_decl->getASTContext())); 1039 1040 if (log) 1041 { 1042 ASTDumper ast_dumper(interface_type); 1043 log->Printf(" FEVD[%u] Adding type for $__lldb_objc_class: %s", current_id, ast_dumper.GetCString()); 1044 } 1045 1046 AddOneType(context, class_user_type, current_id); 1047 1048 if (method_decl->isInstanceMethod()) 1049 { 1050 // self is a pointer to the object 1051 1052 QualType class_pointer_type = method_decl->getASTContext().getObjCObjectPointerType(QualType(interface_type, 0)); 1053 1054 TypeFromUser self_user_type(class_pointer_type.getAsOpaquePtr(), 1055 ClangASTContext::GetASTContext(&method_decl->getASTContext())); 1056 1057 m_struct_vars->m_object_pointer_type = self_user_type; 1058 } 1059 else 1060 { 1061 // self is a Class pointer 1062 QualType class_type = method_decl->getASTContext().getObjCClassType(); 1063 1064 TypeFromUser self_user_type(class_type.getAsOpaquePtr(), 1065 ClangASTContext::GetASTContext(&method_decl->getASTContext())); 1066 1067 m_struct_vars->m_object_pointer_type = self_user_type; 1068 } 1069 1070 return; 1071 } 1072 else 1073 { 1074 // This branch will get hit if we are executing code in the context of a function that 1075 // claims to have an object pointer (through DW_AT_object_pointer?) but is not formally a 1076 // method of the class. In that case, just look up the "self" variable in the current 1077 // scope and use its type. 1078 1079 VariableList *vars = frame->GetVariableList(false); 1080 1081 lldb::VariableSP self_var = vars->FindVariable(ConstString("self")); 1082 1083 if (self_var && 1084 self_var->IsInScope(frame) && 1085 self_var->LocationIsValidForFrame (frame)) 1086 { 1087 Type *self_type = self_var->GetType(); 1088 1089 if (!self_type) 1090 return; 1091 1092 CompilerType self_clang_type = self_type->GetFullCompilerType (); 1093 1094 if (ClangASTContext::IsObjCClassType(self_clang_type)) 1095 { 1096 return; 1097 } 1098 else if (ClangASTContext::IsObjCObjectPointerType(self_clang_type)) 1099 { 1100 self_clang_type = self_clang_type.GetPointeeType(); 1101 1102 if (!self_clang_type) 1103 return; 1104 1105 if (log) 1106 { 1107 ASTDumper ast_dumper(self_type->GetFullCompilerType ()); 1108 log->Printf(" FEVD[%u] Adding type for $__lldb_objc_class: %s", current_id, ast_dumper.GetCString()); 1109 } 1110 1111 TypeFromUser class_user_type (self_clang_type); 1112 1113 AddOneType(context, class_user_type, current_id); 1114 1115 TypeFromUser self_user_type(self_type->GetFullCompilerType ()); 1116 1117 m_struct_vars->m_object_pointer_type = self_user_type; 1118 return; 1119 } 1120 } 1121 } 1122 1123 return; 1124 } 1125 1126 if (name == ConstString(g_lldb_local_vars_namespace_cstr)) 1127 { 1128 CompilerDeclContext frame_decl_context = sym_ctx.block != nullptr ? 1129 sym_ctx.block->GetDeclContext() : 1130 CompilerDeclContext(); 1131 1132 if (frame_decl_context) 1133 { 1134 ClangASTContext *ast = llvm::dyn_cast_or_null<ClangASTContext>(frame_decl_context.GetTypeSystem()); 1135 1136 if (ast) 1137 { 1138 clang::NamespaceDecl *namespace_decl = ClangASTContext::GetUniqueNamespaceDeclaration( 1139 m_ast_context, name_unique_cstr, nullptr); 1140 if (namespace_decl) 1141 { 1142 context.AddNamedDecl(namespace_decl); 1143 clang::DeclContext *clang_decl_ctx = clang::Decl::castToDeclContext(namespace_decl); 1144 clang_decl_ctx->setHasExternalVisibleStorage(true); 1145 } 1146 } 1147 } 1148 1149 return; 1150 } 1151 1152 // any other $__lldb names should be weeded out now 1153 if (!::strncmp(name_unique_cstr, "$__lldb", sizeof("$__lldb") - 1)) 1154 return; 1155 1156 do 1157 { 1158 if (!target) 1159 break; 1160 1161 ClangASTContext *scratch_clang_ast_context = target->GetScratchClangASTContext(); 1162 1163 if (!scratch_clang_ast_context) 1164 break; 1165 1166 ASTContext *scratch_ast_context = scratch_clang_ast_context->getASTContext(); 1167 1168 if (!scratch_ast_context) 1169 break; 1170 1171 TypeDecl *ptype_type_decl = m_parser_vars->m_persistent_vars->GetPersistentType(name); 1172 1173 if (!ptype_type_decl) 1174 break; 1175 1176 Decl *parser_ptype_decl = m_ast_importer_sp->CopyDecl(m_ast_context, scratch_ast_context, ptype_type_decl); 1177 1178 if (!parser_ptype_decl) 1179 break; 1180 1181 TypeDecl *parser_ptype_type_decl = dyn_cast<TypeDecl>(parser_ptype_decl); 1182 1183 if (!parser_ptype_type_decl) 1184 break; 1185 1186 if (log) 1187 log->Printf(" CEDM::FEVD[%u] Found persistent type %s", current_id, name.GetCString()); 1188 1189 context.AddNamedDecl(parser_ptype_type_decl); 1190 } while (0); 1191 1192 ExpressionVariableSP pvar_sp(m_parser_vars->m_persistent_vars->GetVariable(name)); 1193 1194 if (pvar_sp) 1195 { 1196 AddOneVariable(context, pvar_sp, current_id); 1197 return; 1198 } 1199 1200 const char *reg_name(&name.GetCString()[1]); 1201 1202 if (m_parser_vars->m_exe_ctx.GetRegisterContext()) 1203 { 1204 const RegisterInfo *reg_info(m_parser_vars->m_exe_ctx.GetRegisterContext()->GetRegisterInfoByName(reg_name)); 1205 1206 if (reg_info) 1207 { 1208 if (log) 1209 log->Printf(" CEDM::FEVD[%u] Found register %s", current_id, reg_info->name); 1210 1211 AddOneRegister(context, reg_info, current_id); 1212 } 1213 } 1214 } 1215 else 1216 { 1217 ValueObjectSP valobj; 1218 VariableSP var; 1219 1220 bool local_var_lookup = !namespace_decl || 1221 (namespace_decl.GetName() == ConstString(g_lldb_local_vars_namespace_cstr)); 1222 if (frame && local_var_lookup) 1223 { 1224 CompilerDeclContext compiler_decl_context = sym_ctx.block != nullptr ? sym_ctx.block->GetDeclContext() : CompilerDeclContext(); 1225 1226 if (compiler_decl_context) 1227 { 1228 // Make sure that the variables are parsed so that we have the declarations. 1229 VariableListSP vars = frame->GetInScopeVariableList(true); 1230 for (size_t i = 0; i < vars->GetSize(); i++) 1231 vars->GetVariableAtIndex(i)->GetDecl(); 1232 1233 // Search for declarations matching the name. Do not include imported decls 1234 // in the search if we are looking for decls in the artificial namespace 1235 // $__lldb_local_vars. 1236 std::vector<CompilerDecl> found_decls = compiler_decl_context.FindDeclByName(name, namespace_decl.IsValid()); 1237 1238 bool variable_found = false; 1239 for (CompilerDecl decl : found_decls) 1240 { 1241 var = decl.GetAsVariable(); 1242 if (var) 1243 { 1244 variable_found = true; 1245 valobj = ValueObjectVariable::Create(frame, var); 1246 AddOneVariable(context, var, valobj, current_id); 1247 context.m_found.variable = true; 1248 } 1249 } 1250 if (variable_found) 1251 return; 1252 } 1253 } 1254 if (target) 1255 { 1256 var = FindGlobalVariable (*target, 1257 module_sp, 1258 name, 1259 &namespace_decl, 1260 NULL); 1261 1262 if (var) 1263 { 1264 valobj = ValueObjectVariable::Create(target, var); 1265 AddOneVariable(context, var, valobj, current_id); 1266 context.m_found.variable = true; 1267 return; 1268 } 1269 } 1270 1271 std::vector<clang::NamedDecl *> decls_from_modules; 1272 1273 if (target) 1274 { 1275 if (ClangModulesDeclVendor *decl_vendor = target->GetClangModulesDeclVendor()) 1276 { 1277 decl_vendor->FindDecls(name, false, UINT32_MAX, decls_from_modules); 1278 } 1279 } 1280 1281 if (!context.m_found.variable) 1282 { 1283 const bool include_inlines = false; 1284 const bool append = false; 1285 1286 if (namespace_decl && module_sp) 1287 { 1288 const bool include_symbols = false; 1289 1290 module_sp->FindFunctions(name, 1291 &namespace_decl, 1292 eFunctionNameTypeBase, 1293 include_symbols, 1294 include_inlines, 1295 append, 1296 sc_list); 1297 } 1298 else if (target && !namespace_decl) 1299 { 1300 const bool include_symbols = true; 1301 1302 // TODO Fix FindFunctions so that it doesn't return 1303 // instance methods for eFunctionNameTypeBase. 1304 1305 target->GetImages().FindFunctions(name, 1306 eFunctionNameTypeFull, 1307 include_symbols, 1308 include_inlines, 1309 append, 1310 sc_list); 1311 } 1312 1313 // If we found more than one function, see if we can use the 1314 // frame's decl context to remove functions that are shadowed 1315 // by other functions which match in type but are nearer in scope. 1316 // 1317 // AddOneFunction will not add a function whose type has already been 1318 // added, so if there's another function in the list with a matching 1319 // type, check to see if their decl context is a parent of the current 1320 // frame's or was imported via a and using statement, and pick the 1321 // best match according to lookup rules. 1322 if (sc_list.GetSize() > 1) 1323 { 1324 // Collect some info about our frame's context. 1325 StackFrame *frame = m_parser_vars->m_exe_ctx.GetFramePtr(); 1326 SymbolContext frame_sym_ctx; 1327 if (frame != nullptr) 1328 frame_sym_ctx = frame->GetSymbolContext(lldb::eSymbolContextFunction|lldb::eSymbolContextBlock); 1329 CompilerDeclContext frame_decl_context = frame_sym_ctx.block != nullptr ? frame_sym_ctx.block->GetDeclContext() : CompilerDeclContext(); 1330 1331 // We can't do this without a compiler decl context for our frame. 1332 if (frame_decl_context) 1333 { 1334 clang::DeclContext *frame_decl_ctx = (clang::DeclContext *)frame_decl_context.GetOpaqueDeclContext(); 1335 ClangASTContext *ast = llvm::dyn_cast_or_null<ClangASTContext>(frame_decl_context.GetTypeSystem()); 1336 1337 // Structure to hold the info needed when comparing function 1338 // declarations. 1339 struct FuncDeclInfo 1340 { 1341 ConstString m_name; 1342 CompilerType m_copied_type; 1343 uint32_t m_decl_lvl; 1344 SymbolContext m_sym_ctx; 1345 }; 1346 1347 // First, symplify things by looping through the symbol contexts 1348 // to remove unwanted functions and separate out the functions we 1349 // want to compare and prune into a separate list. 1350 // Cache the info needed about the function declarations in a 1351 // vector for efficiency. 1352 SymbolContextList sc_sym_list; 1353 uint32_t num_indices = sc_list.GetSize(); 1354 std::vector<FuncDeclInfo> fdi_cache; 1355 fdi_cache.reserve(num_indices); 1356 for (uint32_t index = 0; index < num_indices; ++index) 1357 { 1358 FuncDeclInfo fdi; 1359 SymbolContext sym_ctx; 1360 sc_list.GetContextAtIndex(index, sym_ctx); 1361 1362 // We don't know enough about symbols to compare them, 1363 // but we should keep them in the list. 1364 Function *function = sym_ctx.function; 1365 if (!function) 1366 { 1367 sc_sym_list.Append(sym_ctx); 1368 continue; 1369 } 1370 // Filter out functions without declaration contexts, as well as 1371 // class/instance methods, since they'll be skipped in the 1372 // code that follows anyway. 1373 CompilerDeclContext func_decl_context = function->GetDeclContext(); 1374 if (!func_decl_context || func_decl_context.IsClassMethod(nullptr, nullptr, nullptr)) 1375 continue; 1376 // We can only prune functions for which we can copy the type. 1377 CompilerType func_clang_type = function->GetType()->GetFullCompilerType(); 1378 CompilerType copied_func_type = GuardedCopyType(func_clang_type); 1379 if (!copied_func_type) 1380 { 1381 sc_sym_list.Append(sym_ctx); 1382 continue; 1383 } 1384 1385 fdi.m_sym_ctx = sym_ctx; 1386 fdi.m_name = function->GetName(); 1387 fdi.m_copied_type = copied_func_type; 1388 fdi.m_decl_lvl = LLDB_INVALID_DECL_LEVEL; 1389 if (fdi.m_copied_type && func_decl_context) 1390 { 1391 // Call CountDeclLevels to get the number of parent scopes we 1392 // have to look through before we find the function declaration. 1393 // When comparing functions of the same type, the one with a 1394 // lower count will be closer to us in the lookup scope and 1395 // shadows the other. 1396 clang::DeclContext *func_decl_ctx = (clang::DeclContext *)func_decl_context.GetOpaqueDeclContext(); 1397 fdi.m_decl_lvl = ast->CountDeclLevels(frame_decl_ctx, 1398 func_decl_ctx, 1399 &fdi.m_name, 1400 &fdi.m_copied_type); 1401 } 1402 fdi_cache.emplace_back(fdi); 1403 } 1404 1405 // Loop through the functions in our cache looking for matching types, 1406 // then compare their scope levels to see which is closer. 1407 std::multimap<CompilerType, const FuncDeclInfo*> matches; 1408 for (const FuncDeclInfo &fdi : fdi_cache) 1409 { 1410 const CompilerType t = fdi.m_copied_type; 1411 auto q = matches.find(t); 1412 if (q != matches.end()) 1413 { 1414 if (q->second->m_decl_lvl > fdi.m_decl_lvl) 1415 // This function is closer; remove the old set. 1416 matches.erase(t); 1417 else if (q->second->m_decl_lvl < fdi.m_decl_lvl) 1418 // The functions in our set are closer - skip this one. 1419 continue; 1420 } 1421 matches.insert(std::make_pair(t, &fdi)); 1422 } 1423 1424 // Loop through our matches and add their symbol contexts to our list. 1425 SymbolContextList sc_func_list; 1426 for (const auto &q : matches) 1427 sc_func_list.Append(q.second->m_sym_ctx); 1428 1429 // Rejoin the lists with the functions in front. 1430 sc_list = sc_func_list; 1431 sc_list.Append(sc_sym_list); 1432 } 1433 } 1434 1435 if (sc_list.GetSize()) 1436 { 1437 Symbol *extern_symbol = NULL; 1438 Symbol *non_extern_symbol = NULL; 1439 1440 for (uint32_t index = 0, num_indices = sc_list.GetSize(); 1441 index < num_indices; 1442 ++index) 1443 { 1444 SymbolContext sym_ctx; 1445 sc_list.GetContextAtIndex(index, sym_ctx); 1446 1447 if (sym_ctx.function) 1448 { 1449 CompilerDeclContext decl_ctx = sym_ctx.function->GetDeclContext(); 1450 1451 if (!decl_ctx) 1452 continue; 1453 1454 // Filter out class/instance methods. 1455 if (decl_ctx.IsClassMethod(nullptr, nullptr, nullptr)) 1456 continue; 1457 1458 AddOneFunction(context, sym_ctx.function, NULL, current_id); 1459 context.m_found.function_with_type_info = true; 1460 context.m_found.function = true; 1461 } 1462 else if (sym_ctx.symbol) 1463 { 1464 if (sym_ctx.symbol->GetType() == eSymbolTypeReExported && target) 1465 { 1466 sym_ctx.symbol = sym_ctx.symbol->ResolveReExportedSymbol(*target); 1467 if (sym_ctx.symbol == NULL) 1468 continue; 1469 } 1470 1471 if (sym_ctx.symbol->IsExternal()) 1472 extern_symbol = sym_ctx.symbol; 1473 else 1474 non_extern_symbol = sym_ctx.symbol; 1475 } 1476 } 1477 1478 if (!context.m_found.function_with_type_info) 1479 { 1480 for (clang::NamedDecl *decl : decls_from_modules) 1481 { 1482 if (llvm::isa<clang::FunctionDecl>(decl)) 1483 { 1484 clang::NamedDecl *copied_decl = llvm::cast<FunctionDecl>(m_ast_importer_sp->CopyDecl(m_ast_context, &decl->getASTContext(), decl)); 1485 context.AddNamedDecl(copied_decl); 1486 context.m_found.function_with_type_info = true; 1487 } 1488 } 1489 } 1490 1491 if (!context.m_found.function_with_type_info) 1492 { 1493 if (extern_symbol) 1494 { 1495 AddOneFunction (context, NULL, extern_symbol, current_id); 1496 context.m_found.function = true; 1497 } 1498 else if (non_extern_symbol) 1499 { 1500 AddOneFunction (context, NULL, non_extern_symbol, current_id); 1501 context.m_found.function = true; 1502 } 1503 } 1504 } 1505 1506 if (!context.m_found.function_with_type_info) 1507 { 1508 // Try the modules next. 1509 1510 do 1511 { 1512 if (ClangModulesDeclVendor *modules_decl_vendor = m_target->GetClangModulesDeclVendor()) 1513 { 1514 bool append = false; 1515 uint32_t max_matches = 1; 1516 std::vector <clang::NamedDecl *> decls; 1517 1518 if (!modules_decl_vendor->FindDecls(name, 1519 append, 1520 max_matches, 1521 decls)) 1522 break; 1523 1524 clang::NamedDecl *const decl_from_modules = decls[0]; 1525 1526 if (llvm::isa<clang::FunctionDecl>(decl_from_modules)) 1527 { 1528 if (log) 1529 { 1530 log->Printf(" CAS::FEVD[%u] Matching function found for \"%s\" in the modules", 1531 current_id, 1532 name.GetCString()); 1533 } 1534 1535 clang::Decl *copied_decl = m_ast_importer_sp->CopyDecl(m_ast_context, &decl_from_modules->getASTContext(), decl_from_modules); 1536 clang::FunctionDecl *copied_function_decl = copied_decl ? dyn_cast<clang::FunctionDecl>(copied_decl) : nullptr; 1537 1538 if (!copied_function_decl) 1539 { 1540 if (log) 1541 log->Printf(" CAS::FEVD[%u] - Couldn't export a function declaration from the modules", 1542 current_id); 1543 1544 break; 1545 } 1546 1547 if (copied_function_decl->getBody() && m_parser_vars->m_code_gen) 1548 { 1549 DeclGroupRef decl_group_ref(copied_function_decl); 1550 m_parser_vars->m_code_gen->HandleTopLevelDecl(decl_group_ref); 1551 } 1552 1553 context.AddNamedDecl(copied_function_decl); 1554 1555 context.m_found.function_with_type_info = true; 1556 context.m_found.function = true; 1557 } 1558 else if (llvm::isa<clang::VarDecl>(decl_from_modules)) 1559 { 1560 if (log) 1561 { 1562 log->Printf(" CAS::FEVD[%u] Matching variable found for \"%s\" in the modules", 1563 current_id, 1564 name.GetCString()); 1565 } 1566 1567 clang::Decl *copied_decl = m_ast_importer_sp->CopyDecl(m_ast_context, &decl_from_modules->getASTContext(), decl_from_modules); 1568 clang::VarDecl *copied_var_decl = copied_decl ? dyn_cast_or_null<clang::VarDecl>(copied_decl) : nullptr; 1569 1570 if (!copied_var_decl) 1571 { 1572 if (log) 1573 log->Printf(" CAS::FEVD[%u] - Couldn't export a variable declaration from the modules", 1574 current_id); 1575 1576 break; 1577 } 1578 1579 context.AddNamedDecl(copied_var_decl); 1580 1581 context.m_found.variable = true; 1582 } 1583 } 1584 } while (0); 1585 } 1586 1587 if (target && !context.m_found.variable && !namespace_decl) 1588 { 1589 // We couldn't find a non-symbol variable for this. Now we'll hunt for a generic 1590 // data symbol, and -- if it is found -- treat it as a variable. 1591 1592 const Symbol *data_symbol = FindGlobalDataSymbol(*target, name); 1593 1594 if (data_symbol) 1595 { 1596 std::string warning("got name from symbols: "); 1597 warning.append(name.AsCString()); 1598 const unsigned diag_id = m_ast_context->getDiagnostics().getCustomDiagID(clang::DiagnosticsEngine::Level::Warning, "%0"); 1599 m_ast_context->getDiagnostics().Report(diag_id) << warning.c_str(); 1600 AddOneGenericVariable(context, *data_symbol, current_id); 1601 context.m_found.variable = true; 1602 } 1603 } 1604 } 1605 } 1606 } 1607 1608 //static opaque_compiler_type_t 1609 //MaybePromoteToBlockPointerType 1610 //( 1611 // ASTContext *ast_context, 1612 // opaque_compiler_type_t candidate_type 1613 //) 1614 //{ 1615 // if (!candidate_type) 1616 // return candidate_type; 1617 // 1618 // QualType candidate_qual_type = QualType::getFromOpaquePtr(candidate_type); 1619 // 1620 // const PointerType *candidate_pointer_type = dyn_cast<PointerType>(candidate_qual_type); 1621 // 1622 // if (!candidate_pointer_type) 1623 // return candidate_type; 1624 // 1625 // QualType pointee_qual_type = candidate_pointer_type->getPointeeType(); 1626 // 1627 // const RecordType *pointee_record_type = dyn_cast<RecordType>(pointee_qual_type); 1628 // 1629 // if (!pointee_record_type) 1630 // return candidate_type; 1631 // 1632 // RecordDecl *pointee_record_decl = pointee_record_type->getDecl(); 1633 // 1634 // if (!pointee_record_decl->isRecord()) 1635 // return candidate_type; 1636 // 1637 // if (!pointee_record_decl->getName().startswith(llvm::StringRef("__block_literal_"))) 1638 // return candidate_type; 1639 // 1640 // QualType generic_function_type = ast_context->getFunctionNoProtoType(ast_context->UnknownAnyTy); 1641 // QualType block_pointer_type = ast_context->getBlockPointerType(generic_function_type); 1642 // 1643 // return block_pointer_type.getAsOpaquePtr(); 1644 //} 1645 1646 bool 1647 ClangExpressionDeclMap::GetVariableValue (VariableSP &var, 1648 lldb_private::Value &var_location, 1649 TypeFromUser *user_type, 1650 TypeFromParser *parser_type) 1651 { 1652 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1653 1654 Type *var_type = var->GetType(); 1655 1656 if (!var_type) 1657 { 1658 if (log) 1659 log->PutCString("Skipped a definition because it has no type"); 1660 return false; 1661 } 1662 1663 CompilerType var_clang_type = var_type->GetFullCompilerType (); 1664 1665 if (!var_clang_type) 1666 { 1667 if (log) 1668 log->PutCString("Skipped a definition because it has no Clang type"); 1669 return false; 1670 } 1671 1672 ClangASTContext *clang_ast = llvm::dyn_cast_or_null<ClangASTContext>(var_type->GetForwardCompilerType().GetTypeSystem()); 1673 1674 if (!clang_ast) 1675 { 1676 if (log) 1677 log->PutCString("Skipped a definition because it has no Clang AST"); 1678 return false; 1679 } 1680 1681 1682 ASTContext *ast = clang_ast->getASTContext(); 1683 1684 if (!ast) 1685 { 1686 if (log) 1687 log->PutCString("There is no AST context for the current execution context"); 1688 return false; 1689 } 1690 //var_clang_type = MaybePromoteToBlockPointerType (ast, var_clang_type); 1691 1692 DWARFExpression &var_location_expr = var->LocationExpression(); 1693 1694 Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr(); 1695 Error err; 1696 1697 if (var->GetLocationIsConstantValueData()) 1698 { 1699 DataExtractor const_value_extractor; 1700 1701 if (var_location_expr.GetExpressionData(const_value_extractor)) 1702 { 1703 var_location = Value(const_value_extractor.GetDataStart(), const_value_extractor.GetByteSize()); 1704 var_location.SetValueType(Value::eValueTypeHostAddress); 1705 } 1706 else 1707 { 1708 if (log) 1709 log->Printf("Error evaluating constant variable: %s", err.AsCString()); 1710 return false; 1711 } 1712 } 1713 1714 CompilerType type_to_use = GuardedCopyType(var_clang_type); 1715 1716 if (!type_to_use) 1717 { 1718 if (log) 1719 log->Printf("Couldn't copy a variable's type into the parser's AST context"); 1720 1721 return false; 1722 } 1723 1724 if (parser_type) 1725 *parser_type = TypeFromParser(type_to_use); 1726 1727 if (var_location.GetContextType() == Value::eContextTypeInvalid) 1728 var_location.SetCompilerType(type_to_use); 1729 1730 if (var_location.GetValueType() == Value::eValueTypeFileAddress) 1731 { 1732 SymbolContext var_sc; 1733 var->CalculateSymbolContext(&var_sc); 1734 1735 if (!var_sc.module_sp) 1736 return false; 1737 1738 Address so_addr(var_location.GetScalar().ULongLong(), var_sc.module_sp->GetSectionList()); 1739 1740 lldb::addr_t load_addr = so_addr.GetLoadAddress(target); 1741 1742 if (load_addr != LLDB_INVALID_ADDRESS) 1743 { 1744 var_location.GetScalar() = load_addr; 1745 var_location.SetValueType(Value::eValueTypeLoadAddress); 1746 } 1747 } 1748 1749 if (user_type) 1750 *user_type = TypeFromUser(var_clang_type); 1751 1752 return true; 1753 } 1754 1755 void 1756 ClangExpressionDeclMap::AddOneVariable (NameSearchContext &context, VariableSP var, ValueObjectSP valobj, unsigned int current_id) 1757 { 1758 assert (m_parser_vars.get()); 1759 1760 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1761 1762 TypeFromUser ut; 1763 TypeFromParser pt; 1764 Value var_location; 1765 1766 if (!GetVariableValue (var, var_location, &ut, &pt)) 1767 return; 1768 1769 clang::QualType parser_opaque_type = QualType::getFromOpaquePtr(pt.GetOpaqueQualType()); 1770 1771 if (parser_opaque_type.isNull()) 1772 return; 1773 1774 if (const clang::Type *parser_type = parser_opaque_type.getTypePtr()) 1775 { 1776 if (const TagType *tag_type = dyn_cast<TagType>(parser_type)) 1777 CompleteType(tag_type->getDecl()); 1778 if (const ObjCObjectPointerType *objc_object_ptr_type = dyn_cast<ObjCObjectPointerType>(parser_type)) 1779 CompleteType(objc_object_ptr_type->getInterfaceDecl()); 1780 } 1781 1782 1783 bool is_reference = pt.IsReferenceType(); 1784 1785 NamedDecl *var_decl = NULL; 1786 if (is_reference) 1787 var_decl = context.AddVarDecl(pt); 1788 else 1789 var_decl = context.AddVarDecl(pt.GetLValueReferenceType()); 1790 1791 std::string decl_name(context.m_decl_name.getAsString()); 1792 ConstString entity_name(decl_name.c_str()); 1793 ClangExpressionVariable *entity(new ClangExpressionVariable(valobj)); 1794 m_found_entities.AddNewlyConstructedVariable(entity); 1795 1796 assert (entity); 1797 entity->EnableParserVars(GetParserID()); 1798 ClangExpressionVariable::ParserVars *parser_vars = entity->GetParserVars(GetParserID()); 1799 parser_vars->m_parser_type = pt; 1800 parser_vars->m_named_decl = var_decl; 1801 parser_vars->m_llvm_value = NULL; 1802 parser_vars->m_lldb_value = var_location; 1803 parser_vars->m_lldb_var = var; 1804 1805 if (is_reference) 1806 entity->m_flags |= ClangExpressionVariable::EVTypeIsReference; 1807 1808 if (log) 1809 { 1810 ASTDumper orig_dumper(ut.GetOpaqueQualType()); 1811 ASTDumper ast_dumper(var_decl); 1812 log->Printf(" CEDM::FEVD[%u] Found variable %s, returned %s (original %s)", current_id, decl_name.c_str(), ast_dumper.GetCString(), orig_dumper.GetCString()); 1813 } 1814 } 1815 1816 void 1817 ClangExpressionDeclMap::AddOneVariable(NameSearchContext &context, 1818 ExpressionVariableSP &pvar_sp, 1819 unsigned int current_id) 1820 { 1821 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1822 1823 TypeFromUser user_type (llvm::cast<ClangExpressionVariable>(pvar_sp.get())->GetTypeFromUser()); 1824 1825 TypeFromParser parser_type (GuardedCopyType(user_type)); 1826 1827 if (!parser_type.GetOpaqueQualType()) 1828 { 1829 if (log) 1830 log->Printf(" CEDM::FEVD[%u] Couldn't import type for pvar %s", current_id, pvar_sp->GetName().GetCString()); 1831 return; 1832 } 1833 1834 NamedDecl *var_decl = context.AddVarDecl(parser_type.GetLValueReferenceType()); 1835 1836 llvm::cast<ClangExpressionVariable>(pvar_sp.get())->EnableParserVars(GetParserID()); 1837 ClangExpressionVariable::ParserVars *parser_vars = llvm::cast<ClangExpressionVariable>(pvar_sp.get())->GetParserVars(GetParserID()); 1838 parser_vars->m_parser_type = parser_type; 1839 parser_vars->m_named_decl = var_decl; 1840 parser_vars->m_llvm_value = NULL; 1841 parser_vars->m_lldb_value.Clear(); 1842 1843 if (log) 1844 { 1845 ASTDumper ast_dumper(var_decl); 1846 log->Printf(" CEDM::FEVD[%u] Added pvar %s, returned %s", current_id, pvar_sp->GetName().GetCString(), ast_dumper.GetCString()); 1847 } 1848 } 1849 1850 void 1851 ClangExpressionDeclMap::AddOneGenericVariable(NameSearchContext &context, 1852 const Symbol &symbol, 1853 unsigned int current_id) 1854 { 1855 assert(m_parser_vars.get()); 1856 1857 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1858 1859 Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr(); 1860 1861 if (target == NULL) 1862 return; 1863 1864 ASTContext *scratch_ast_context = target->GetScratchClangASTContext()->getASTContext(); 1865 1866 TypeFromUser user_type (ClangASTContext::GetBasicType(scratch_ast_context, eBasicTypeVoid).GetPointerType().GetLValueReferenceType()); 1867 TypeFromParser parser_type (ClangASTContext::GetBasicType(m_ast_context, eBasicTypeVoid).GetPointerType().GetLValueReferenceType()); 1868 NamedDecl *var_decl = context.AddVarDecl(parser_type); 1869 1870 std::string decl_name(context.m_decl_name.getAsString()); 1871 ConstString entity_name(decl_name.c_str()); 1872 ClangExpressionVariable *entity(new ClangExpressionVariable(m_parser_vars->m_exe_ctx.GetBestExecutionContextScope (), 1873 entity_name, 1874 user_type, 1875 m_parser_vars->m_target_info.byte_order, 1876 m_parser_vars->m_target_info.address_byte_size)); 1877 m_found_entities.AddNewlyConstructedVariable(entity); 1878 1879 entity->EnableParserVars(GetParserID()); 1880 ClangExpressionVariable::ParserVars *parser_vars = entity->GetParserVars(GetParserID()); 1881 1882 const Address symbol_address = symbol.GetAddress(); 1883 lldb::addr_t symbol_load_addr = symbol_address.GetLoadAddress(target); 1884 1885 //parser_vars->m_lldb_value.SetContext(Value::eContextTypeClangType, user_type.GetOpaqueQualType()); 1886 parser_vars->m_lldb_value.SetCompilerType(user_type); 1887 parser_vars->m_lldb_value.GetScalar() = symbol_load_addr; 1888 parser_vars->m_lldb_value.SetValueType(Value::eValueTypeLoadAddress); 1889 1890 parser_vars->m_parser_type = parser_type; 1891 parser_vars->m_named_decl = var_decl; 1892 parser_vars->m_llvm_value = NULL; 1893 parser_vars->m_lldb_sym = &symbol; 1894 1895 if (log) 1896 { 1897 ASTDumper ast_dumper(var_decl); 1898 1899 log->Printf(" CEDM::FEVD[%u] Found variable %s, returned %s", current_id, decl_name.c_str(), ast_dumper.GetCString()); 1900 } 1901 } 1902 1903 bool 1904 ClangExpressionDeclMap::ResolveUnknownTypes() 1905 { 1906 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1907 Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr(); 1908 1909 ClangASTContext *scratch_ast_context = target->GetScratchClangASTContext(); 1910 1911 for (size_t index = 0, num_entities = m_found_entities.GetSize(); 1912 index < num_entities; 1913 ++index) 1914 { 1915 ExpressionVariableSP entity = m_found_entities.GetVariableAtIndex(index); 1916 1917 ClangExpressionVariable::ParserVars *parser_vars = llvm::cast<ClangExpressionVariable>(entity.get())->GetParserVars(GetParserID()); 1918 1919 if (entity->m_flags & ClangExpressionVariable::EVUnknownType) 1920 { 1921 const NamedDecl *named_decl = parser_vars->m_named_decl; 1922 const VarDecl *var_decl = dyn_cast<VarDecl>(named_decl); 1923 1924 if (!var_decl) 1925 { 1926 if (log) 1927 log->Printf("Entity of unknown type does not have a VarDecl"); 1928 return false; 1929 } 1930 1931 if (log) 1932 { 1933 ASTDumper ast_dumper(const_cast<VarDecl*>(var_decl)); 1934 log->Printf("Variable of unknown type now has Decl %s", ast_dumper.GetCString()); 1935 } 1936 1937 QualType var_type = var_decl->getType(); 1938 TypeFromParser parser_type(var_type.getAsOpaquePtr(), ClangASTContext::GetASTContext(&var_decl->getASTContext())); 1939 1940 lldb::opaque_compiler_type_t copied_type = m_ast_importer_sp->CopyType(scratch_ast_context->getASTContext(), &var_decl->getASTContext(), var_type.getAsOpaquePtr()); 1941 1942 if (!copied_type) 1943 { 1944 if (log) 1945 log->Printf("ClangExpressionDeclMap::ResolveUnknownType - Couldn't import the type for a variable"); 1946 1947 return (bool) lldb::ExpressionVariableSP(); 1948 } 1949 1950 TypeFromUser user_type(copied_type, scratch_ast_context); 1951 1952 // parser_vars->m_lldb_value.SetContext(Value::eContextTypeClangType, user_type.GetOpaqueQualType()); 1953 parser_vars->m_lldb_value.SetCompilerType(user_type); 1954 parser_vars->m_parser_type = parser_type; 1955 1956 entity->SetCompilerType(user_type); 1957 1958 entity->m_flags &= ~(ClangExpressionVariable::EVUnknownType); 1959 } 1960 } 1961 1962 return true; 1963 } 1964 1965 void 1966 ClangExpressionDeclMap::AddOneRegister (NameSearchContext &context, 1967 const RegisterInfo *reg_info, 1968 unsigned int current_id) 1969 { 1970 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1971 1972 CompilerType clang_type = ClangASTContext::GetBuiltinTypeForEncodingAndBitSize (m_ast_context, 1973 reg_info->encoding, 1974 reg_info->byte_size * 8); 1975 1976 if (!clang_type) 1977 { 1978 if (log) 1979 log->Printf(" Tried to add a type for %s, but couldn't get one", context.m_decl_name.getAsString().c_str()); 1980 return; 1981 } 1982 1983 TypeFromParser parser_clang_type (clang_type); 1984 1985 NamedDecl *var_decl = context.AddVarDecl(parser_clang_type); 1986 1987 ClangExpressionVariable *entity(new ClangExpressionVariable(m_parser_vars->m_exe_ctx.GetBestExecutionContextScope(), 1988 m_parser_vars->m_target_info.byte_order, 1989 m_parser_vars->m_target_info.address_byte_size)); 1990 m_found_entities.AddNewlyConstructedVariable(entity); 1991 1992 std::string decl_name(context.m_decl_name.getAsString()); 1993 entity->SetName (ConstString (decl_name.c_str())); 1994 entity->SetRegisterInfo (reg_info); 1995 entity->EnableParserVars(GetParserID()); 1996 ClangExpressionVariable::ParserVars *parser_vars = entity->GetParserVars(GetParserID()); 1997 parser_vars->m_parser_type = parser_clang_type; 1998 parser_vars->m_named_decl = var_decl; 1999 parser_vars->m_llvm_value = NULL; 2000 parser_vars->m_lldb_value.Clear(); 2001 entity->m_flags |= ClangExpressionVariable::EVBareRegister; 2002 2003 if (log) 2004 { 2005 ASTDumper ast_dumper(var_decl); 2006 log->Printf(" CEDM::FEVD[%d] Added register %s, returned %s", current_id, context.m_decl_name.getAsString().c_str(), ast_dumper.GetCString()); 2007 } 2008 } 2009 2010 void 2011 ClangExpressionDeclMap::AddOneFunction (NameSearchContext &context, 2012 Function* function, 2013 Symbol* symbol, 2014 unsigned int current_id) 2015 { 2016 assert (m_parser_vars.get()); 2017 2018 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 2019 2020 NamedDecl *function_decl = NULL; 2021 Address fun_address; 2022 CompilerType function_clang_type; 2023 2024 bool is_indirect_function = false; 2025 2026 if (function) 2027 { 2028 Type *function_type = function->GetType(); 2029 2030 const lldb::LanguageType comp_unit_language = function->GetCompileUnit()->GetLanguage(); 2031 const bool extern_c = Language::LanguageIsC(comp_unit_language) || 2032 (Language::LanguageIsObjC(comp_unit_language) && 2033 !Language::LanguageIsCPlusPlus(comp_unit_language)); 2034 2035 if (!extern_c) 2036 { 2037 TypeSystem *type_system = function->GetDeclContext().GetTypeSystem(); 2038 if (ClangASTContext *src_ast = llvm::dyn_cast<ClangASTContext>(type_system)) 2039 { 2040 clang::DeclContext *src_decl_context = (clang::DeclContext*)function->GetDeclContext().GetOpaqueDeclContext(); 2041 clang::FunctionDecl *src_function_decl = llvm::dyn_cast_or_null<clang::FunctionDecl>(src_decl_context); 2042 2043 if (src_function_decl) 2044 { 2045 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))) 2046 { 2047 if (log) 2048 { 2049 ASTDumper ast_dumper((clang::Decl*)copied_function_decl); 2050 2051 StreamString ss; 2052 2053 function->DumpSymbolContext(&ss); 2054 2055 log->Printf(" CEDM::FEVD[%u] Imported decl for function %s (description %s), returned %s", 2056 current_id, 2057 copied_function_decl->getName().str().c_str(), 2058 ss.GetData(), 2059 ast_dumper.GetCString()); 2060 2061 } 2062 2063 context.AddNamedDecl(copied_function_decl); 2064 return; 2065 } 2066 else 2067 { 2068 if (log) 2069 { 2070 log->Printf (" Failed to import the function decl for '%s'", 2071 src_function_decl->getName().str().c_str()); 2072 } 2073 } 2074 } 2075 } 2076 } 2077 2078 if (!function_type) 2079 { 2080 if (log) 2081 log->PutCString(" Skipped a function because it has no type"); 2082 return; 2083 } 2084 2085 function_clang_type = function_type->GetFullCompilerType (); 2086 2087 if (!function_clang_type) 2088 { 2089 if (log) 2090 log->PutCString(" Skipped a function because it has no Clang type"); 2091 return; 2092 } 2093 2094 fun_address = function->GetAddressRange().GetBaseAddress(); 2095 2096 CompilerType copied_function_type = GuardedCopyType(function_clang_type); 2097 if (copied_function_type) 2098 { 2099 function_decl = context.AddFunDecl(copied_function_type, extern_c); 2100 2101 if (!function_decl) 2102 { 2103 if (log) 2104 { 2105 log->Printf (" Failed to create a function decl for '%s' {0x%8.8" PRIx64 "}", 2106 function_type->GetName().GetCString(), 2107 function_type->GetID()); 2108 } 2109 2110 return; 2111 } 2112 } 2113 else 2114 { 2115 // We failed to copy the type we found 2116 if (log) 2117 { 2118 log->Printf (" Failed to import the function type '%s' {0x%8.8" PRIx64 "} into the expression parser AST contenxt", 2119 function_type->GetName().GetCString(), 2120 function_type->GetID()); 2121 } 2122 2123 return; 2124 } 2125 } 2126 else if (symbol) 2127 { 2128 fun_address = symbol->GetAddress(); 2129 function_decl = context.AddGenericFunDecl(); 2130 is_indirect_function = symbol->IsIndirect(); 2131 } 2132 else 2133 { 2134 if (log) 2135 log->PutCString(" AddOneFunction called with no function and no symbol"); 2136 return; 2137 } 2138 2139 Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr(); 2140 2141 lldb::addr_t load_addr = fun_address.GetCallableLoadAddress(target, is_indirect_function); 2142 2143 ClangExpressionVariable *entity(new ClangExpressionVariable (m_parser_vars->m_exe_ctx.GetBestExecutionContextScope (), 2144 m_parser_vars->m_target_info.byte_order, 2145 m_parser_vars->m_target_info.address_byte_size)); 2146 m_found_entities.AddNewlyConstructedVariable(entity); 2147 2148 std::string decl_name(context.m_decl_name.getAsString()); 2149 entity->SetName(ConstString(decl_name.c_str())); 2150 entity->SetCompilerType (function_clang_type); 2151 entity->EnableParserVars(GetParserID()); 2152 2153 ClangExpressionVariable::ParserVars *parser_vars = entity->GetParserVars(GetParserID()); 2154 2155 if (load_addr != LLDB_INVALID_ADDRESS) 2156 { 2157 parser_vars->m_lldb_value.SetValueType(Value::eValueTypeLoadAddress); 2158 parser_vars->m_lldb_value.GetScalar() = load_addr; 2159 } 2160 else 2161 { 2162 // We have to try finding a file address. 2163 2164 lldb::addr_t file_addr = fun_address.GetFileAddress(); 2165 2166 parser_vars->m_lldb_value.SetValueType(Value::eValueTypeFileAddress); 2167 parser_vars->m_lldb_value.GetScalar() = file_addr; 2168 } 2169 2170 2171 parser_vars->m_named_decl = function_decl; 2172 parser_vars->m_llvm_value = NULL; 2173 2174 if (log) 2175 { 2176 ASTDumper ast_dumper(function_decl); 2177 2178 StreamString ss; 2179 2180 fun_address.Dump(&ss, m_parser_vars->m_exe_ctx.GetBestExecutionContextScope(), Address::DumpStyleResolvedDescription); 2181 2182 log->Printf(" CEDM::FEVD[%u] Found %s function %s (description %s), returned %s", 2183 current_id, 2184 (function ? "specific" : "generic"), 2185 decl_name.c_str(), 2186 ss.GetData(), 2187 ast_dumper.GetCString()); 2188 } 2189 } 2190 2191 void 2192 ClangExpressionDeclMap::AddThisType(NameSearchContext &context, 2193 TypeFromUser &ut, 2194 unsigned int current_id) 2195 { 2196 CompilerType copied_clang_type = GuardedCopyType(ut); 2197 2198 if (!copied_clang_type) 2199 { 2200 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 2201 2202 if (log) 2203 log->Printf("ClangExpressionDeclMap::AddThisType - Couldn't import the type"); 2204 2205 return; 2206 } 2207 2208 if (copied_clang_type.IsAggregateType() && copied_clang_type.GetCompleteType ()) 2209 { 2210 CompilerType void_clang_type = ClangASTContext::GetBasicType(m_ast_context, eBasicTypeVoid); 2211 CompilerType void_ptr_clang_type = void_clang_type.GetPointerType(); 2212 2213 CompilerType method_type = ClangASTContext::CreateFunctionType (m_ast_context, 2214 void_clang_type, 2215 &void_ptr_clang_type, 2216 1, 2217 false, 2218 copied_clang_type.GetTypeQualifiers()); 2219 2220 const bool is_virtual = false; 2221 const bool is_static = false; 2222 const bool is_inline = false; 2223 const bool is_explicit = false; 2224 const bool is_attr_used = true; 2225 const bool is_artificial = false; 2226 2227 ClangASTContext::GetASTContext(m_ast_context)-> 2228 AddMethodToCXXRecordType (copied_clang_type.GetOpaqueQualType(), 2229 "$__lldb_expr", 2230 method_type, 2231 lldb::eAccessPublic, 2232 is_virtual, 2233 is_static, 2234 is_inline, 2235 is_explicit, 2236 is_attr_used, 2237 is_artificial); 2238 } 2239 2240 if (!copied_clang_type.IsValid()) 2241 return; 2242 2243 TypeSourceInfo *type_source_info = m_ast_context->getTrivialTypeSourceInfo(QualType::getFromOpaquePtr(copied_clang_type.GetOpaqueQualType())); 2244 2245 if (!type_source_info) 2246 return; 2247 2248 // Construct a typedef type because if "*this" is a templated type we can't just return ClassTemplateSpecializationDecls in response to name queries. 2249 // Using a typedef makes this much more robust. 2250 2251 TypedefDecl *typedef_decl = TypedefDecl::Create(*m_ast_context, 2252 m_ast_context->getTranslationUnitDecl(), 2253 SourceLocation(), 2254 SourceLocation(), 2255 context.m_decl_name.getAsIdentifierInfo(), 2256 type_source_info); 2257 2258 2259 if (!typedef_decl) 2260 return; 2261 2262 context.AddNamedDecl(typedef_decl); 2263 2264 return; 2265 } 2266 2267 void 2268 ClangExpressionDeclMap::AddOneType(NameSearchContext &context, 2269 TypeFromUser &ut, 2270 unsigned int current_id) 2271 { 2272 CompilerType copied_clang_type = GuardedCopyType(ut); 2273 2274 if (!copied_clang_type) 2275 { 2276 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 2277 2278 if (log) 2279 log->Printf("ClangExpressionDeclMap::AddOneType - Couldn't import the type"); 2280 2281 return; 2282 } 2283 2284 context.AddTypeDecl(copied_clang_type); 2285 } 2286