1 //===-- DWARFASTParserClang.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 <stdlib.h> 11 12 #include "DWARFASTParserClang.h" 13 #include "DWARFDIE.h" 14 #include "DWARFDIECollection.h" 15 #include "DWARFDebugInfo.h" 16 #include "DWARFDeclContext.h" 17 #include "DWARFDefines.h" 18 #include "SymbolFileDWARF.h" 19 #include "SymbolFileDWARFDwo.h" 20 #include "SymbolFileDWARFDebugMap.h" 21 #include "UniqueDWARFASTType.h" 22 23 #include "Plugins/Language/ObjC/ObjCLanguage.h" 24 #include "lldb/Core/Module.h" 25 #include "lldb/Core/Value.h" 26 #include "lldb/Host/Host.h" 27 #include "lldb/Symbol/ClangASTImporter.h" 28 #include "lldb/Symbol/ClangExternalASTSourceCommon.h" 29 #include "lldb/Symbol/ClangUtil.h" 30 #include "lldb/Symbol/CompileUnit.h" 31 #include "lldb/Symbol/Function.h" 32 #include "lldb/Symbol/ObjectFile.h" 33 #include "lldb/Symbol/SymbolVendor.h" 34 #include "lldb/Symbol/TypeList.h" 35 #include "lldb/Symbol/TypeMap.h" 36 #include "lldb/Target/Language.h" 37 #include "lldb/Utility/LLDBAssert.h" 38 #include "lldb/Utility/Log.h" 39 #include "lldb/Utility/StreamString.h" 40 41 #include "clang/AST/CXXInheritance.h" 42 #include "clang/AST/DeclCXX.h" 43 #include "clang/AST/DeclObjC.h" 44 45 #include <map> 46 #include <vector> 47 48 //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN 49 50 #ifdef ENABLE_DEBUG_PRINTF 51 #include <stdio.h> 52 #define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__) 53 #else 54 #define DEBUG_PRINTF(fmt, ...) 55 #endif 56 57 using namespace lldb; 58 using namespace lldb_private; 59 DWARFASTParserClang::DWARFASTParserClang(ClangASTContext &ast) 60 : m_ast(ast), m_die_to_decl_ctx(), m_decl_ctx_to_die() {} 61 62 DWARFASTParserClang::~DWARFASTParserClang() {} 63 64 static AccessType DW_ACCESS_to_AccessType(uint32_t dwarf_accessibility) { 65 switch (dwarf_accessibility) { 66 case DW_ACCESS_public: 67 return eAccessPublic; 68 case DW_ACCESS_private: 69 return eAccessPrivate; 70 case DW_ACCESS_protected: 71 return eAccessProtected; 72 default: 73 break; 74 } 75 return eAccessNone; 76 } 77 78 static bool DeclKindIsCXXClass(clang::Decl::Kind decl_kind) { 79 switch (decl_kind) { 80 case clang::Decl::CXXRecord: 81 case clang::Decl::ClassTemplateSpecialization: 82 return true; 83 default: 84 break; 85 } 86 return false; 87 } 88 89 struct BitfieldInfo { 90 uint64_t bit_size; 91 uint64_t bit_offset; 92 93 BitfieldInfo() 94 : bit_size(LLDB_INVALID_ADDRESS), bit_offset(LLDB_INVALID_ADDRESS) {} 95 96 void Clear() { 97 bit_size = LLDB_INVALID_ADDRESS; 98 bit_offset = LLDB_INVALID_ADDRESS; 99 } 100 101 bool IsValid() const { 102 return (bit_size != LLDB_INVALID_ADDRESS) && 103 (bit_offset != LLDB_INVALID_ADDRESS); 104 } 105 106 bool NextBitfieldOffsetIsValid(const uint64_t next_bit_offset) const { 107 if (IsValid()) { 108 // This bitfield info is valid, so any subsequent bitfields 109 // must not overlap and must be at a higher bit offset than 110 // any previous bitfield + size. 111 return (bit_size + bit_offset) <= next_bit_offset; 112 } else { 113 // If the this BitfieldInfo is not valid, then any offset isOK 114 return true; 115 } 116 } 117 }; 118 119 ClangASTImporter &DWARFASTParserClang::GetClangASTImporter() { 120 if (!m_clang_ast_importer_ap) { 121 m_clang_ast_importer_ap.reset(new ClangASTImporter); 122 } 123 return *m_clang_ast_importer_ap; 124 } 125 126 /// Detect a forward declaration that is nested in a DW_TAG_module. 127 static bool isClangModuleFwdDecl(const DWARFDIE &Die) { 128 if (!Die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0)) 129 return false; 130 auto Parent = Die.GetParent(); 131 while (Parent.IsValid()) { 132 if (Parent.Tag() == DW_TAG_module) 133 return true; 134 Parent = Parent.GetParent(); 135 } 136 return false; 137 } 138 139 TypeSP DWARFASTParserClang::ParseTypeFromDWO(const DWARFDIE &die, Log *log) { 140 ModuleSP dwo_module_sp = die.GetContainingDWOModule(); 141 if (!dwo_module_sp) 142 return TypeSP(); 143 144 // This type comes from an external DWO module. 145 std::vector<CompilerContext> dwo_context; 146 die.GetDWOContext(dwo_context); 147 TypeMap dwo_types; 148 149 if (!dwo_module_sp->GetSymbolVendor()->FindTypes(dwo_context, true, 150 dwo_types)) { 151 if (!isClangModuleFwdDecl(die)) 152 return TypeSP(); 153 154 // Since this this type is defined in one of the Clang modules 155 // imported by this symbol file, search all of them. 156 auto *SymFile = die.GetCU()->GetSymbolFileDWARF(); 157 for (const auto &NameModule : SymFile->getExternalTypeModules()) { 158 if (!NameModule.second) 159 continue; 160 SymbolVendor *SymVendor = NameModule.second->GetSymbolVendor(); 161 if (SymVendor->FindTypes(dwo_context, true, dwo_types)) 162 break; 163 } 164 } 165 166 const size_t num_dwo_types = dwo_types.GetSize(); 167 if (num_dwo_types != 1) 168 return TypeSP(); 169 170 // We found a real definition for this type in the Clang module, so 171 // lets use it and cache the fact that we found a complete type for 172 // this die. 173 TypeSP dwo_type_sp = dwo_types.GetTypeAtIndex(0); 174 if (!dwo_type_sp) 175 return TypeSP(); 176 177 lldb_private::CompilerType dwo_type = dwo_type_sp->GetForwardCompilerType(); 178 179 lldb_private::CompilerType type = 180 GetClangASTImporter().CopyType(m_ast, dwo_type); 181 182 // printf ("copied_qual_type: ast = %p, clang_type = %p, name = 183 // '%s'\n", m_ast, copied_qual_type.getAsOpaquePtr(), 184 // external_type->GetName().GetCString()); 185 if (!type) 186 return TypeSP(); 187 188 SymbolFileDWARF *dwarf = die.GetDWARF(); 189 TypeSP type_sp(new Type( 190 die.GetID(), dwarf, dwo_type_sp->GetName(), dwo_type_sp->GetByteSize(), 191 NULL, LLDB_INVALID_UID, Type::eEncodingInvalid, 192 &dwo_type_sp->GetDeclaration(), type, Type::eResolveStateForward)); 193 194 dwarf->GetTypeList()->Insert(type_sp); 195 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); 196 clang::TagDecl *tag_decl = ClangASTContext::GetAsTagDecl(type); 197 if (tag_decl) 198 LinkDeclContextToDIE(tag_decl, die); 199 else { 200 clang::DeclContext *defn_decl_ctx = GetCachedClangDeclContextForDIE(die); 201 if (defn_decl_ctx) 202 LinkDeclContextToDIE(defn_decl_ctx, die); 203 } 204 205 return type_sp; 206 } 207 208 TypeSP DWARFASTParserClang::ParseTypeFromDWARF(const SymbolContext &sc, 209 const DWARFDIE &die, Log *log, 210 bool *type_is_new_ptr) { 211 TypeSP type_sp; 212 213 if (type_is_new_ptr) 214 *type_is_new_ptr = false; 215 216 AccessType accessibility = eAccessNone; 217 if (die) { 218 SymbolFileDWARF *dwarf = die.GetDWARF(); 219 if (log) { 220 DWARFDIE context_die; 221 clang::DeclContext *context = 222 GetClangDeclContextContainingDIE(die, &context_die); 223 224 dwarf->GetObjectFile()->GetModule()->LogMessage( 225 log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die " 226 "0x%8.8x)) %s name = '%s')", 227 die.GetOffset(), static_cast<void *>(context), 228 context_die.GetOffset(), die.GetTagAsCString(), die.GetName()); 229 } 230 // 231 // Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 232 // if (log && dwarf_cu) 233 // { 234 // StreamString s; 235 // die->DumpLocation (this, dwarf_cu, s); 236 // dwarf->GetObjectFile()->GetModule()->LogMessage (log, 237 // "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData()); 238 // 239 // } 240 241 Type *type_ptr = dwarf->GetDIEToType().lookup(die.GetDIE()); 242 TypeList *type_list = dwarf->GetTypeList(); 243 if (type_ptr == NULL) { 244 if (type_is_new_ptr) 245 *type_is_new_ptr = true; 246 247 const dw_tag_t tag = die.Tag(); 248 249 bool is_forward_declaration = false; 250 DWARFAttributes attributes; 251 const char *type_name_cstr = NULL; 252 ConstString type_name_const_str; 253 Type::ResolveState resolve_state = Type::eResolveStateUnresolved; 254 uint64_t byte_size = 0; 255 Declaration decl; 256 257 Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID; 258 CompilerType clang_type; 259 DWARFFormValue form_value; 260 261 dw_attr_t attr; 262 263 switch (tag) { 264 case DW_TAG_typedef: 265 case DW_TAG_base_type: 266 case DW_TAG_pointer_type: 267 case DW_TAG_reference_type: 268 case DW_TAG_rvalue_reference_type: 269 case DW_TAG_const_type: 270 case DW_TAG_restrict_type: 271 case DW_TAG_volatile_type: 272 case DW_TAG_unspecified_type: { 273 // Set a bit that lets us know that we are currently parsing this 274 dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED; 275 276 const size_t num_attributes = die.GetAttributes(attributes); 277 uint32_t encoding = 0; 278 DWARFFormValue encoding_uid; 279 280 if (num_attributes > 0) { 281 uint32_t i; 282 for (i = 0; i < num_attributes; ++i) { 283 attr = attributes.AttributeAtIndex(i); 284 if (attributes.ExtractFormValueAtIndex(i, form_value)) { 285 switch (attr) { 286 case DW_AT_decl_file: 287 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( 288 form_value.Unsigned())); 289 break; 290 case DW_AT_decl_line: 291 decl.SetLine(form_value.Unsigned()); 292 break; 293 case DW_AT_decl_column: 294 decl.SetColumn(form_value.Unsigned()); 295 break; 296 case DW_AT_name: 297 298 type_name_cstr = form_value.AsCString(); 299 // Work around a bug in llvm-gcc where they give a name to a 300 // reference type which doesn't 301 // include the "&"... 302 if (tag == DW_TAG_reference_type) { 303 if (strchr(type_name_cstr, '&') == NULL) 304 type_name_cstr = NULL; 305 } 306 if (type_name_cstr) 307 type_name_const_str.SetCString(type_name_cstr); 308 break; 309 case DW_AT_byte_size: 310 byte_size = form_value.Unsigned(); 311 break; 312 case DW_AT_encoding: 313 encoding = form_value.Unsigned(); 314 break; 315 case DW_AT_type: 316 encoding_uid = form_value; 317 break; 318 default: 319 case DW_AT_sibling: 320 break; 321 } 322 } 323 } 324 } 325 326 if (tag == DW_TAG_typedef && encoding_uid.IsValid()) { 327 // Try to parse a typedef from the DWO file first as modules 328 // can contain typedef'ed structures that have no names like: 329 // 330 // typedef struct { int a; } Foo; 331 // 332 // In this case we will have a structure with no name and a 333 // typedef named "Foo" that points to this unnamed structure. 334 // The name in the typedef is the only identifier for the struct, 335 // so always try to get typedefs from DWO files if possible. 336 // 337 // The type_sp returned will be empty if the typedef doesn't exist 338 // in a DWO file, so it is cheap to call this function just to check. 339 // 340 // If we don't do this we end up creating a TypeSP that says this 341 // is a typedef to type 0x123 (the DW_AT_type value would be 0x123 342 // in the DW_TAG_typedef), and this is the unnamed structure type. 343 // We will have a hard time tracking down an unnammed structure 344 // type in the module DWO file, so we make sure we don't get into 345 // this situation by always resolving typedefs from the DWO file. 346 const DWARFDIE encoding_die = dwarf->GetDIE(DIERef(encoding_uid)); 347 348 // First make sure that the die that this is typedef'ed to _is_ 349 // just a declaration (DW_AT_declaration == 1), not a full definition 350 // since template types can't be represented in modules since only 351 // concrete instances of templates are ever emitted and modules 352 // won't contain those 353 if (encoding_die && 354 encoding_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 355 1) { 356 type_sp = ParseTypeFromDWO(die, log); 357 if (type_sp) 358 return type_sp; 359 } 360 } 361 362 DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\") type => 0x%8.8lx\n", 363 die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr, 364 encoding_uid.Reference()); 365 366 switch (tag) { 367 default: 368 break; 369 370 case DW_TAG_unspecified_type: 371 if (strcmp(type_name_cstr, "nullptr_t") == 0 || 372 strcmp(type_name_cstr, "decltype(nullptr)") == 0) { 373 resolve_state = Type::eResolveStateFull; 374 clang_type = m_ast.GetBasicType(eBasicTypeNullPtr); 375 break; 376 } 377 // Fall through to base type below in case we can handle the type 378 // there... 379 LLVM_FALLTHROUGH; 380 381 case DW_TAG_base_type: 382 resolve_state = Type::eResolveStateFull; 383 clang_type = m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize( 384 type_name_cstr, encoding, byte_size * 8); 385 break; 386 387 case DW_TAG_pointer_type: 388 encoding_data_type = Type::eEncodingIsPointerUID; 389 break; 390 case DW_TAG_reference_type: 391 encoding_data_type = Type::eEncodingIsLValueReferenceUID; 392 break; 393 case DW_TAG_rvalue_reference_type: 394 encoding_data_type = Type::eEncodingIsRValueReferenceUID; 395 break; 396 case DW_TAG_typedef: 397 encoding_data_type = Type::eEncodingIsTypedefUID; 398 break; 399 case DW_TAG_const_type: 400 encoding_data_type = Type::eEncodingIsConstUID; 401 break; 402 case DW_TAG_restrict_type: 403 encoding_data_type = Type::eEncodingIsRestrictUID; 404 break; 405 case DW_TAG_volatile_type: 406 encoding_data_type = Type::eEncodingIsVolatileUID; 407 break; 408 } 409 410 if (!clang_type && 411 (encoding_data_type == Type::eEncodingIsPointerUID || 412 encoding_data_type == Type::eEncodingIsTypedefUID) && 413 sc.comp_unit != NULL) { 414 if (tag == DW_TAG_pointer_type) { 415 DWARFDIE target_die = die.GetReferencedDIE(DW_AT_type); 416 417 if (target_die.GetAttributeValueAsUnsigned(DW_AT_APPLE_block, 0)) { 418 // Blocks have a __FuncPtr inside them which is a pointer to a 419 // function of the proper type. 420 421 for (DWARFDIE child_die = target_die.GetFirstChild(); 422 child_die.IsValid(); child_die = child_die.GetSibling()) { 423 if (!strcmp(child_die.GetAttributeValueAsString(DW_AT_name, ""), 424 "__FuncPtr")) { 425 DWARFDIE function_pointer_type = 426 child_die.GetReferencedDIE(DW_AT_type); 427 428 if (function_pointer_type) { 429 DWARFDIE function_type = 430 function_pointer_type.GetReferencedDIE(DW_AT_type); 431 432 bool function_type_is_new_pointer; 433 TypeSP lldb_function_type_sp = ParseTypeFromDWARF( 434 sc, function_type, log, &function_type_is_new_pointer); 435 436 if (lldb_function_type_sp) { 437 clang_type = m_ast.CreateBlockPointerType( 438 lldb_function_type_sp->GetForwardCompilerType()); 439 encoding_data_type = Type::eEncodingIsUID; 440 encoding_uid.Clear(); 441 resolve_state = Type::eResolveStateFull; 442 } 443 } 444 445 break; 446 } 447 } 448 } 449 } 450 451 bool translation_unit_is_objc = 452 (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || 453 sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus); 454 455 if (translation_unit_is_objc) { 456 if (type_name_cstr != NULL) { 457 static ConstString g_objc_type_name_id("id"); 458 static ConstString g_objc_type_name_Class("Class"); 459 static ConstString g_objc_type_name_selector("SEL"); 460 461 if (type_name_const_str == g_objc_type_name_id) { 462 if (log) 463 dwarf->GetObjectFile()->GetModule()->LogMessage( 464 log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " 465 "is Objective C 'id' built-in type.", 466 die.GetOffset(), die.GetTagAsCString(), die.GetName()); 467 clang_type = m_ast.GetBasicType(eBasicTypeObjCID); 468 encoding_data_type = Type::eEncodingIsUID; 469 encoding_uid.Clear(); 470 resolve_state = Type::eResolveStateFull; 471 472 } else if (type_name_const_str == g_objc_type_name_Class) { 473 if (log) 474 dwarf->GetObjectFile()->GetModule()->LogMessage( 475 log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " 476 "is Objective C 'Class' built-in type.", 477 die.GetOffset(), die.GetTagAsCString(), die.GetName()); 478 clang_type = m_ast.GetBasicType(eBasicTypeObjCClass); 479 encoding_data_type = Type::eEncodingIsUID; 480 encoding_uid.Clear(); 481 resolve_state = Type::eResolveStateFull; 482 } else if (type_name_const_str == g_objc_type_name_selector) { 483 if (log) 484 dwarf->GetObjectFile()->GetModule()->LogMessage( 485 log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " 486 "is Objective C 'selector' built-in type.", 487 die.GetOffset(), die.GetTagAsCString(), die.GetName()); 488 clang_type = m_ast.GetBasicType(eBasicTypeObjCSel); 489 encoding_data_type = Type::eEncodingIsUID; 490 encoding_uid.Clear(); 491 resolve_state = Type::eResolveStateFull; 492 } 493 } else if (encoding_data_type == Type::eEncodingIsPointerUID && 494 encoding_uid.IsValid()) { 495 // Clang sometimes erroneously emits id as objc_object*. In that 496 // case we fix up the type to "id". 497 498 const DWARFDIE encoding_die = dwarf->GetDIE(DIERef(encoding_uid)); 499 500 if (encoding_die && encoding_die.Tag() == DW_TAG_structure_type) { 501 if (const char *struct_name = encoding_die.GetName()) { 502 if (!strcmp(struct_name, "objc_object")) { 503 if (log) 504 dwarf->GetObjectFile()->GetModule()->LogMessage( 505 log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s " 506 "'%s' is 'objc_object*', which we overrode to " 507 "'id'.", 508 die.GetOffset(), die.GetTagAsCString(), 509 die.GetName()); 510 clang_type = m_ast.GetBasicType(eBasicTypeObjCID); 511 encoding_data_type = Type::eEncodingIsUID; 512 encoding_uid.Clear(); 513 resolve_state = Type::eResolveStateFull; 514 } 515 } 516 } 517 } 518 } 519 } 520 521 type_sp.reset( 522 new Type(die.GetID(), dwarf, type_name_const_str, byte_size, NULL, 523 DIERef(encoding_uid).GetUID(dwarf), encoding_data_type, 524 &decl, clang_type, resolve_state)); 525 526 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); 527 528 // Type* encoding_type = 529 // GetUniquedTypeForDIEOffset(encoding_uid, type_sp, 530 // NULL, 0, 0, false); 531 // if (encoding_type != NULL) 532 // { 533 // if (encoding_type != DIE_IS_BEING_PARSED) 534 // type_sp->SetEncodingType(encoding_type); 535 // else 536 // m_indirect_fixups.push_back(type_sp.get()); 537 // } 538 } break; 539 540 case DW_TAG_structure_type: 541 case DW_TAG_union_type: 542 case DW_TAG_class_type: { 543 // Set a bit that lets us know that we are currently parsing this 544 dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED; 545 bool byte_size_valid = false; 546 547 LanguageType class_language = eLanguageTypeUnknown; 548 bool is_complete_objc_class = false; 549 // bool struct_is_class = false; 550 const size_t num_attributes = die.GetAttributes(attributes); 551 if (num_attributes > 0) { 552 uint32_t i; 553 for (i = 0; i < num_attributes; ++i) { 554 attr = attributes.AttributeAtIndex(i); 555 if (attributes.ExtractFormValueAtIndex(i, form_value)) { 556 switch (attr) { 557 case DW_AT_decl_file: 558 if (die.GetCU()->DW_AT_decl_file_attributes_are_invalid()) { 559 // llvm-gcc outputs invalid DW_AT_decl_file attributes that 560 // always 561 // point to the compile unit file, so we clear this invalid 562 // value 563 // so that we can still unique types efficiently. 564 decl.SetFile(FileSpec("<invalid>", false)); 565 } else 566 decl.SetFile( 567 sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( 568 form_value.Unsigned())); 569 break; 570 571 case DW_AT_decl_line: 572 decl.SetLine(form_value.Unsigned()); 573 break; 574 575 case DW_AT_decl_column: 576 decl.SetColumn(form_value.Unsigned()); 577 break; 578 579 case DW_AT_name: 580 type_name_cstr = form_value.AsCString(); 581 type_name_const_str.SetCString(type_name_cstr); 582 break; 583 584 case DW_AT_byte_size: 585 byte_size = form_value.Unsigned(); 586 byte_size_valid = true; 587 break; 588 589 case DW_AT_accessibility: 590 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); 591 break; 592 593 case DW_AT_declaration: 594 is_forward_declaration = form_value.Boolean(); 595 break; 596 597 case DW_AT_APPLE_runtime_class: 598 class_language = (LanguageType)form_value.Signed(); 599 break; 600 601 case DW_AT_APPLE_objc_complete_type: 602 is_complete_objc_class = form_value.Signed(); 603 break; 604 605 case DW_AT_allocated: 606 case DW_AT_associated: 607 case DW_AT_data_location: 608 case DW_AT_description: 609 case DW_AT_start_scope: 610 case DW_AT_visibility: 611 default: 612 case DW_AT_sibling: 613 break; 614 } 615 } 616 } 617 } 618 619 // UniqueDWARFASTType is large, so don't create a local variables on the 620 // stack, put it on the heap. This function is often called recursively 621 // and clang isn't good and sharing the stack space for variables in 622 // different blocks. 623 std::unique_ptr<UniqueDWARFASTType> unique_ast_entry_ap( 624 new UniqueDWARFASTType()); 625 626 ConstString unique_typename(type_name_const_str); 627 Declaration unique_decl(decl); 628 629 if (type_name_const_str) { 630 LanguageType die_language = die.GetLanguage(); 631 if (Language::LanguageIsCPlusPlus(die_language)) { 632 // For C++, we rely solely upon the one definition rule that says 633 // only 634 // one thing can exist at a given decl context. We ignore the file 635 // and 636 // line that things are declared on. 637 std::string qualified_name; 638 if (die.GetQualifiedName(qualified_name)) 639 unique_typename = ConstString(qualified_name); 640 unique_decl.Clear(); 641 } 642 643 if (dwarf->GetUniqueDWARFASTTypeMap().Find( 644 unique_typename, die, unique_decl, 645 byte_size_valid ? byte_size : -1, *unique_ast_entry_ap)) { 646 type_sp = unique_ast_entry_ap->m_type_sp; 647 if (type_sp) { 648 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); 649 return type_sp; 650 } 651 } 652 } 653 654 DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), 655 DW_TAG_value_to_name(tag), type_name_cstr); 656 657 int tag_decl_kind = -1; 658 AccessType default_accessibility = eAccessNone; 659 if (tag == DW_TAG_structure_type) { 660 tag_decl_kind = clang::TTK_Struct; 661 default_accessibility = eAccessPublic; 662 } else if (tag == DW_TAG_union_type) { 663 tag_decl_kind = clang::TTK_Union; 664 default_accessibility = eAccessPublic; 665 } else if (tag == DW_TAG_class_type) { 666 tag_decl_kind = clang::TTK_Class; 667 default_accessibility = eAccessPrivate; 668 } 669 670 if (byte_size_valid && byte_size == 0 && type_name_cstr && 671 die.HasChildren() == false && 672 sc.comp_unit->GetLanguage() == eLanguageTypeObjC) { 673 // Work around an issue with clang at the moment where 674 // forward declarations for objective C classes are emitted 675 // as: 676 // DW_TAG_structure_type [2] 677 // DW_AT_name( "ForwardObjcClass" ) 678 // DW_AT_byte_size( 0x00 ) 679 // DW_AT_decl_file( "..." ) 680 // DW_AT_decl_line( 1 ) 681 // 682 // Note that there is no DW_AT_declaration and there are 683 // no children, and the byte size is zero. 684 is_forward_declaration = true; 685 } 686 687 if (class_language == eLanguageTypeObjC || 688 class_language == eLanguageTypeObjC_plus_plus) { 689 if (!is_complete_objc_class && 690 die.Supports_DW_AT_APPLE_objc_complete_type()) { 691 // We have a valid eSymbolTypeObjCClass class symbol whose 692 // name matches the current objective C class that we 693 // are trying to find and this DIE isn't the complete 694 // definition (we checked is_complete_objc_class above and 695 // know it is false), so the real definition is in here somewhere 696 type_sp = dwarf->FindCompleteObjCDefinitionTypeForDIE( 697 die, type_name_const_str, true); 698 699 if (!type_sp) { 700 SymbolFileDWARFDebugMap *debug_map_symfile = 701 dwarf->GetDebugMapSymfile(); 702 if (debug_map_symfile) { 703 // We weren't able to find a full declaration in 704 // this DWARF, see if we have a declaration anywhere 705 // else... 706 type_sp = 707 debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE( 708 die, type_name_const_str, true); 709 } 710 } 711 712 if (type_sp) { 713 if (log) { 714 dwarf->GetObjectFile()->GetModule()->LogMessage( 715 log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an " 716 "incomplete objc type, complete type is 0x%8.8" PRIx64, 717 static_cast<void *>(this), die.GetOffset(), 718 DW_TAG_value_to_name(tag), type_name_cstr, 719 type_sp->GetID()); 720 } 721 722 // We found a real definition for this type elsewhere 723 // so lets use it and cache the fact that we found 724 // a complete type for this die 725 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); 726 return type_sp; 727 } 728 } 729 } 730 731 if (is_forward_declaration) { 732 // We have a forward declaration to a type and we need 733 // to try and find a full declaration. We look in the 734 // current type index just in case we have a forward 735 // declaration followed by an actual declarations in the 736 // DWARF. If this fails, we need to look elsewhere... 737 if (log) { 738 dwarf->GetObjectFile()->GetModule()->LogMessage( 739 log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a " 740 "forward declaration, trying to find complete type", 741 static_cast<void *>(this), die.GetOffset(), 742 DW_TAG_value_to_name(tag), type_name_cstr); 743 } 744 745 // See if the type comes from a DWO module and if so, track down that 746 // type. 747 type_sp = ParseTypeFromDWO(die, log); 748 if (type_sp) 749 return type_sp; 750 751 DWARFDeclContext die_decl_ctx; 752 die.GetDWARFDeclContext(die_decl_ctx); 753 754 // type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, 755 // type_name_const_str); 756 type_sp = dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx); 757 758 if (!type_sp) { 759 SymbolFileDWARFDebugMap *debug_map_symfile = 760 dwarf->GetDebugMapSymfile(); 761 if (debug_map_symfile) { 762 // We weren't able to find a full declaration in 763 // this DWARF, see if we have a declaration anywhere 764 // else... 765 type_sp = 766 debug_map_symfile->FindDefinitionTypeForDWARFDeclContext( 767 die_decl_ctx); 768 } 769 } 770 771 if (type_sp) { 772 if (log) { 773 dwarf->GetObjectFile()->GetModule()->LogMessage( 774 log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a " 775 "forward declaration, complete type is 0x%8.8" PRIx64, 776 static_cast<void *>(this), die.GetOffset(), 777 DW_TAG_value_to_name(tag), type_name_cstr, type_sp->GetID()); 778 } 779 780 // We found a real definition for this type elsewhere 781 // so lets use it and cache the fact that we found 782 // a complete type for this die 783 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); 784 clang::DeclContext *defn_decl_ctx = GetCachedClangDeclContextForDIE( 785 dwarf->DebugInfo()->GetDIE(DIERef(type_sp->GetID(), dwarf))); 786 if (defn_decl_ctx) 787 LinkDeclContextToDIE(defn_decl_ctx, die); 788 return type_sp; 789 } 790 } 791 assert(tag_decl_kind != -1); 792 bool clang_type_was_created = false; 793 clang_type.SetCompilerType( 794 &m_ast, dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE())); 795 if (!clang_type) { 796 clang::DeclContext *decl_ctx = 797 GetClangDeclContextContainingDIE(die, nullptr); 798 if (accessibility == eAccessNone && decl_ctx) { 799 // Check the decl context that contains this class/struct/union. 800 // If it is a class we must give it an accessibility. 801 const clang::Decl::Kind containing_decl_kind = 802 decl_ctx->getDeclKind(); 803 if (DeclKindIsCXXClass(containing_decl_kind)) 804 accessibility = default_accessibility; 805 } 806 807 ClangASTMetadata metadata; 808 metadata.SetUserID(die.GetID()); 809 metadata.SetIsDynamicCXXType(dwarf->ClassOrStructIsVirtual(die)); 810 811 if (type_name_cstr && strchr(type_name_cstr, '<')) { 812 ClangASTContext::TemplateParameterInfos template_param_infos; 813 if (ParseTemplateParameterInfos(die, template_param_infos)) { 814 clang::ClassTemplateDecl *class_template_decl = 815 m_ast.ParseClassTemplateDecl(decl_ctx, accessibility, 816 type_name_cstr, tag_decl_kind, 817 template_param_infos); 818 if (!class_template_decl) { 819 if (log) { 820 dwarf->GetObjectFile()->GetModule()->LogMessage( 821 log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" " 822 "clang::ClassTemplateDecl failed to return a decl.", 823 static_cast<void *>(this), die.GetOffset(), 824 DW_TAG_value_to_name(tag), type_name_cstr); 825 } 826 return TypeSP(); 827 } 828 829 clang::ClassTemplateSpecializationDecl 830 *class_specialization_decl = 831 m_ast.CreateClassTemplateSpecializationDecl( 832 decl_ctx, class_template_decl, tag_decl_kind, 833 template_param_infos); 834 clang_type = m_ast.CreateClassTemplateSpecializationType( 835 class_specialization_decl); 836 clang_type_was_created = true; 837 838 m_ast.SetMetadata(class_template_decl, metadata); 839 m_ast.SetMetadata(class_specialization_decl, metadata); 840 } 841 } 842 843 if (!clang_type_was_created) { 844 clang_type_was_created = true; 845 clang_type = m_ast.CreateRecordType(decl_ctx, accessibility, 846 type_name_cstr, tag_decl_kind, 847 class_language, &metadata); 848 } 849 } 850 851 // Store a forward declaration to this class type in case any 852 // parameters in any class methods need it for the clang 853 // types for function prototypes. 854 LinkDeclContextToDIE(m_ast.GetDeclContextForType(clang_type), die); 855 type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, 856 byte_size, NULL, LLDB_INVALID_UID, 857 Type::eEncodingIsUID, &decl, clang_type, 858 Type::eResolveStateForward)); 859 860 type_sp->SetIsCompleteObjCClass(is_complete_objc_class); 861 862 // Add our type to the unique type map so we don't 863 // end up creating many copies of the same type over 864 // and over in the ASTContext for our module 865 unique_ast_entry_ap->m_type_sp = type_sp; 866 unique_ast_entry_ap->m_die = die; 867 unique_ast_entry_ap->m_declaration = unique_decl; 868 unique_ast_entry_ap->m_byte_size = byte_size; 869 dwarf->GetUniqueDWARFASTTypeMap().Insert(unique_typename, 870 *unique_ast_entry_ap); 871 872 if (is_forward_declaration && die.HasChildren()) { 873 // Check to see if the DIE actually has a definition, some version of 874 // GCC will 875 // emit DIEs with DW_AT_declaration set to true, but yet still have 876 // subprogram, 877 // members, or inheritance, so we can't trust it 878 DWARFDIE child_die = die.GetFirstChild(); 879 while (child_die) { 880 switch (child_die.Tag()) { 881 case DW_TAG_inheritance: 882 case DW_TAG_subprogram: 883 case DW_TAG_member: 884 case DW_TAG_APPLE_property: 885 case DW_TAG_class_type: 886 case DW_TAG_structure_type: 887 case DW_TAG_enumeration_type: 888 case DW_TAG_typedef: 889 case DW_TAG_union_type: 890 child_die.Clear(); 891 is_forward_declaration = false; 892 break; 893 default: 894 child_die = child_die.GetSibling(); 895 break; 896 } 897 } 898 } 899 900 if (!is_forward_declaration) { 901 // Always start the definition for a class type so that 902 // if the class has child classes or types that require 903 // the class to be created for use as their decl contexts 904 // the class will be ready to accept these child definitions. 905 if (die.HasChildren() == false) { 906 // No children for this struct/union/class, lets finish it 907 if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { 908 ClangASTContext::CompleteTagDeclarationDefinition(clang_type); 909 } else { 910 dwarf->GetObjectFile()->GetModule()->ReportError( 911 "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its " 912 "definition.\nPlease file a bug and attach the file at the " 913 "start of this error message", 914 die.GetOffset(), type_name_cstr); 915 } 916 917 if (tag == DW_TAG_structure_type) // this only applies in C 918 { 919 clang::RecordDecl *record_decl = 920 ClangASTContext::GetAsRecordDecl(clang_type); 921 922 if (record_decl) { 923 GetClangASTImporter().InsertRecordDecl( 924 record_decl, ClangASTImporter::LayoutInfo()); 925 } 926 } 927 } else if (clang_type_was_created) { 928 // Start the definition if the class is not objective C since 929 // the underlying decls respond to isCompleteDefinition(). Objective 930 // C decls don't respond to isCompleteDefinition() so we can't 931 // start the declaration definition right away. For C++ 932 // class/union/structs 933 // we want to start the definition in case the class is needed as 934 // the 935 // declaration context for a contained class or type without the 936 // need 937 // to complete that type.. 938 939 if (class_language != eLanguageTypeObjC && 940 class_language != eLanguageTypeObjC_plus_plus) 941 ClangASTContext::StartTagDeclarationDefinition(clang_type); 942 943 // Leave this as a forward declaration until we need 944 // to know the details of the type. lldb_private::Type 945 // will automatically call the SymbolFile virtual function 946 // "SymbolFileDWARF::CompleteType(Type *)" 947 // When the definition needs to be defined. 948 assert(!dwarf->GetForwardDeclClangTypeToDie().count( 949 ClangUtil::RemoveFastQualifiers(clang_type) 950 .GetOpaqueQualType()) && 951 "Type already in the forward declaration map!"); 952 // Can't assume m_ast.GetSymbolFile() is actually a SymbolFileDWARF, 953 // it can be a 954 // SymbolFileDWARFDebugMap for Apple binaries. 955 dwarf->GetForwardDeclDieToClangType()[die.GetDIE()] = 956 clang_type.GetOpaqueQualType(); 957 dwarf->GetForwardDeclClangTypeToDie() 958 [ClangUtil::RemoveFastQualifiers(clang_type) 959 .GetOpaqueQualType()] = die.GetDIERef(); 960 m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), true); 961 } 962 } 963 } break; 964 965 case DW_TAG_enumeration_type: { 966 // Set a bit that lets us know that we are currently parsing this 967 dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED; 968 969 bool is_scoped = false; 970 DWARFFormValue encoding_form; 971 972 const size_t num_attributes = die.GetAttributes(attributes); 973 if (num_attributes > 0) { 974 uint32_t i; 975 976 for (i = 0; i < num_attributes; ++i) { 977 attr = attributes.AttributeAtIndex(i); 978 if (attributes.ExtractFormValueAtIndex(i, form_value)) { 979 switch (attr) { 980 case DW_AT_decl_file: 981 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( 982 form_value.Unsigned())); 983 break; 984 case DW_AT_decl_line: 985 decl.SetLine(form_value.Unsigned()); 986 break; 987 case DW_AT_decl_column: 988 decl.SetColumn(form_value.Unsigned()); 989 break; 990 case DW_AT_name: 991 type_name_cstr = form_value.AsCString(); 992 type_name_const_str.SetCString(type_name_cstr); 993 break; 994 case DW_AT_type: 995 encoding_form = form_value; 996 break; 997 case DW_AT_byte_size: 998 byte_size = form_value.Unsigned(); 999 break; 1000 case DW_AT_accessibility: 1001 break; // accessibility = 1002 // DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 1003 case DW_AT_declaration: 1004 is_forward_declaration = form_value.Boolean(); 1005 break; 1006 case DW_AT_enum_class: 1007 is_scoped = form_value.Boolean(); 1008 break; 1009 case DW_AT_allocated: 1010 case DW_AT_associated: 1011 case DW_AT_bit_stride: 1012 case DW_AT_byte_stride: 1013 case DW_AT_data_location: 1014 case DW_AT_description: 1015 case DW_AT_start_scope: 1016 case DW_AT_visibility: 1017 case DW_AT_specification: 1018 case DW_AT_abstract_origin: 1019 case DW_AT_sibling: 1020 break; 1021 } 1022 } 1023 } 1024 1025 if (is_forward_declaration) { 1026 type_sp = ParseTypeFromDWO(die, log); 1027 if (type_sp) 1028 return type_sp; 1029 1030 DWARFDeclContext die_decl_ctx; 1031 die.GetDWARFDeclContext(die_decl_ctx); 1032 1033 type_sp = 1034 dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx); 1035 1036 if (!type_sp) { 1037 SymbolFileDWARFDebugMap *debug_map_symfile = 1038 dwarf->GetDebugMapSymfile(); 1039 if (debug_map_symfile) { 1040 // We weren't able to find a full declaration in 1041 // this DWARF, see if we have a declaration anywhere 1042 // else... 1043 type_sp = 1044 debug_map_symfile->FindDefinitionTypeForDWARFDeclContext( 1045 die_decl_ctx); 1046 } 1047 } 1048 1049 if (type_sp) { 1050 if (log) { 1051 dwarf->GetObjectFile()->GetModule()->LogMessage( 1052 log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a " 1053 "forward declaration, complete type is 0x%8.8" PRIx64, 1054 static_cast<void *>(this), die.GetOffset(), 1055 DW_TAG_value_to_name(tag), type_name_cstr, 1056 type_sp->GetID()); 1057 } 1058 1059 // We found a real definition for this type elsewhere 1060 // so lets use it and cache the fact that we found 1061 // a complete type for this die 1062 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); 1063 clang::DeclContext *defn_decl_ctx = 1064 GetCachedClangDeclContextForDIE(dwarf->DebugInfo()->GetDIE( 1065 DIERef(type_sp->GetID(), dwarf))); 1066 if (defn_decl_ctx) 1067 LinkDeclContextToDIE(defn_decl_ctx, die); 1068 return type_sp; 1069 } 1070 } 1071 DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), 1072 DW_TAG_value_to_name(tag), type_name_cstr); 1073 1074 CompilerType enumerator_clang_type; 1075 clang_type.SetCompilerType( 1076 &m_ast, 1077 dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE())); 1078 if (!clang_type) { 1079 if (encoding_form.IsValid()) { 1080 Type *enumerator_type = 1081 dwarf->ResolveTypeUID(DIERef(encoding_form)); 1082 if (enumerator_type) 1083 enumerator_clang_type = enumerator_type->GetFullCompilerType(); 1084 } 1085 1086 if (!enumerator_clang_type) { 1087 if (byte_size > 0) { 1088 enumerator_clang_type = 1089 m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize( 1090 NULL, DW_ATE_signed, byte_size * 8); 1091 } else { 1092 enumerator_clang_type = m_ast.GetBasicType(eBasicTypeInt); 1093 } 1094 } 1095 1096 clang_type = m_ast.CreateEnumerationType( 1097 type_name_cstr, GetClangDeclContextContainingDIE(die, nullptr), 1098 decl, enumerator_clang_type, is_scoped); 1099 } else { 1100 enumerator_clang_type = 1101 m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType()); 1102 } 1103 1104 LinkDeclContextToDIE( 1105 ClangASTContext::GetDeclContextForType(clang_type), die); 1106 1107 type_sp.reset(new Type( 1108 die.GetID(), dwarf, type_name_const_str, byte_size, NULL, 1109 DIERef(encoding_form).GetUID(dwarf), Type::eEncodingIsUID, &decl, 1110 clang_type, Type::eResolveStateForward)); 1111 1112 if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { 1113 if (die.HasChildren()) { 1114 SymbolContext cu_sc(die.GetLLDBCompileUnit()); 1115 bool is_signed = false; 1116 enumerator_clang_type.IsIntegerType(is_signed); 1117 ParseChildEnumerators(cu_sc, clang_type, is_signed, 1118 type_sp->GetByteSize(), die); 1119 } 1120 ClangASTContext::CompleteTagDeclarationDefinition(clang_type); 1121 } else { 1122 dwarf->GetObjectFile()->GetModule()->ReportError( 1123 "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its " 1124 "definition.\nPlease file a bug and attach the file at the " 1125 "start of this error message", 1126 die.GetOffset(), type_name_cstr); 1127 } 1128 } 1129 } break; 1130 1131 case DW_TAG_inlined_subroutine: 1132 case DW_TAG_subprogram: 1133 case DW_TAG_subroutine_type: { 1134 // Set a bit that lets us know that we are currently parsing this 1135 dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED; 1136 1137 DWARFFormValue type_die_form; 1138 bool is_variadic = false; 1139 bool is_inline = false; 1140 bool is_static = false; 1141 bool is_virtual = false; 1142 bool is_explicit = false; 1143 bool is_artificial = false; 1144 bool has_template_params = false; 1145 DWARFFormValue specification_die_form; 1146 DWARFFormValue abstract_origin_die_form; 1147 dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET; 1148 1149 unsigned type_quals = 0; 1150 clang::StorageClass storage = 1151 clang::SC_None; //, Extern, Static, PrivateExtern 1152 1153 const size_t num_attributes = die.GetAttributes(attributes); 1154 if (num_attributes > 0) { 1155 uint32_t i; 1156 for (i = 0; i < num_attributes; ++i) { 1157 attr = attributes.AttributeAtIndex(i); 1158 if (attributes.ExtractFormValueAtIndex(i, form_value)) { 1159 switch (attr) { 1160 case DW_AT_decl_file: 1161 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( 1162 form_value.Unsigned())); 1163 break; 1164 case DW_AT_decl_line: 1165 decl.SetLine(form_value.Unsigned()); 1166 break; 1167 case DW_AT_decl_column: 1168 decl.SetColumn(form_value.Unsigned()); 1169 break; 1170 case DW_AT_name: 1171 type_name_cstr = form_value.AsCString(); 1172 type_name_const_str.SetCString(type_name_cstr); 1173 break; 1174 1175 case DW_AT_linkage_name: 1176 case DW_AT_MIPS_linkage_name: 1177 break; // mangled = 1178 // form_value.AsCString(&dwarf->get_debug_str_data()); 1179 // break; 1180 case DW_AT_type: 1181 type_die_form = form_value; 1182 break; 1183 case DW_AT_accessibility: 1184 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); 1185 break; 1186 case DW_AT_declaration: 1187 break; // is_forward_declaration = form_value.Boolean(); break; 1188 case DW_AT_inline: 1189 is_inline = form_value.Boolean(); 1190 break; 1191 case DW_AT_virtuality: 1192 is_virtual = form_value.Boolean(); 1193 break; 1194 case DW_AT_explicit: 1195 is_explicit = form_value.Boolean(); 1196 break; 1197 case DW_AT_artificial: 1198 is_artificial = form_value.Boolean(); 1199 break; 1200 1201 case DW_AT_external: 1202 if (form_value.Unsigned()) { 1203 if (storage == clang::SC_None) 1204 storage = clang::SC_Extern; 1205 else 1206 storage = clang::SC_PrivateExtern; 1207 } 1208 break; 1209 1210 case DW_AT_specification: 1211 specification_die_form = form_value; 1212 break; 1213 1214 case DW_AT_abstract_origin: 1215 abstract_origin_die_form = form_value; 1216 break; 1217 1218 case DW_AT_object_pointer: 1219 object_pointer_die_offset = form_value.Reference(); 1220 break; 1221 1222 case DW_AT_allocated: 1223 case DW_AT_associated: 1224 case DW_AT_address_class: 1225 case DW_AT_calling_convention: 1226 case DW_AT_data_location: 1227 case DW_AT_elemental: 1228 case DW_AT_entry_pc: 1229 case DW_AT_frame_base: 1230 case DW_AT_high_pc: 1231 case DW_AT_low_pc: 1232 case DW_AT_prototyped: 1233 case DW_AT_pure: 1234 case DW_AT_ranges: 1235 case DW_AT_recursive: 1236 case DW_AT_return_addr: 1237 case DW_AT_segment: 1238 case DW_AT_start_scope: 1239 case DW_AT_static_link: 1240 case DW_AT_trampoline: 1241 case DW_AT_visibility: 1242 case DW_AT_vtable_elem_location: 1243 case DW_AT_description: 1244 case DW_AT_sibling: 1245 break; 1246 } 1247 } 1248 } 1249 } 1250 1251 std::string object_pointer_name; 1252 if (object_pointer_die_offset != DW_INVALID_OFFSET) { 1253 DWARFDIE object_pointer_die = die.GetDIE(object_pointer_die_offset); 1254 if (object_pointer_die) { 1255 const char *object_pointer_name_cstr = object_pointer_die.GetName(); 1256 if (object_pointer_name_cstr) 1257 object_pointer_name = object_pointer_name_cstr; 1258 } 1259 } 1260 1261 DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), 1262 DW_TAG_value_to_name(tag), type_name_cstr); 1263 1264 CompilerType return_clang_type; 1265 Type *func_type = NULL; 1266 1267 if (type_die_form.IsValid()) 1268 func_type = dwarf->ResolveTypeUID(DIERef(type_die_form)); 1269 1270 if (func_type) 1271 return_clang_type = func_type->GetForwardCompilerType(); 1272 else 1273 return_clang_type = m_ast.GetBasicType(eBasicTypeVoid); 1274 1275 std::vector<CompilerType> function_param_types; 1276 std::vector<clang::ParmVarDecl *> function_param_decls; 1277 1278 // Parse the function children for the parameters 1279 1280 DWARFDIE decl_ctx_die; 1281 clang::DeclContext *containing_decl_ctx = 1282 GetClangDeclContextContainingDIE(die, &decl_ctx_die); 1283 const clang::Decl::Kind containing_decl_kind = 1284 containing_decl_ctx->getDeclKind(); 1285 1286 bool is_cxx_method = DeclKindIsCXXClass(containing_decl_kind); 1287 // Start off static. This will be set to false in 1288 // ParseChildParameters(...) 1289 // if we find a "this" parameters as the first parameter 1290 if (is_cxx_method) { 1291 is_static = true; 1292 } 1293 1294 if (die.HasChildren()) { 1295 bool skip_artificial = true; 1296 ParseChildParameters(sc, containing_decl_ctx, die, skip_artificial, 1297 is_static, is_variadic, has_template_params, 1298 function_param_types, function_param_decls, 1299 type_quals); 1300 } 1301 1302 bool ignore_containing_context = false; 1303 // Check for templatized class member functions. If we had any 1304 // DW_TAG_template_type_parameter 1305 // or DW_TAG_template_value_parameter the DW_TAG_subprogram DIE, then we 1306 // can't let this become 1307 // a method in a class. Why? Because templatized functions are only 1308 // emitted if one of the 1309 // templatized methods is used in the current compile unit and we will 1310 // end up with classes 1311 // that may or may not include these member functions and this means one 1312 // class won't match another 1313 // class definition and it affects our ability to use a class in the 1314 // clang expression parser. So 1315 // for the greater good, we currently must not allow any template member 1316 // functions in a class definition. 1317 if (is_cxx_method && has_template_params) { 1318 ignore_containing_context = true; 1319 is_cxx_method = false; 1320 } 1321 1322 // clang_type will get the function prototype clang type after this call 1323 clang_type = m_ast.CreateFunctionType( 1324 return_clang_type, function_param_types.data(), 1325 function_param_types.size(), is_variadic, type_quals); 1326 1327 if (type_name_cstr) { 1328 bool type_handled = false; 1329 if (tag == DW_TAG_subprogram || tag == DW_TAG_inlined_subroutine) { 1330 ObjCLanguage::MethodName objc_method(type_name_cstr, true); 1331 if (objc_method.IsValid(true)) { 1332 CompilerType class_opaque_type; 1333 ConstString class_name(objc_method.GetClassName()); 1334 if (class_name) { 1335 TypeSP complete_objc_class_type_sp( 1336 dwarf->FindCompleteObjCDefinitionTypeForDIE( 1337 DWARFDIE(), class_name, false)); 1338 1339 if (complete_objc_class_type_sp) { 1340 CompilerType type_clang_forward_type = 1341 complete_objc_class_type_sp->GetForwardCompilerType(); 1342 if (ClangASTContext::IsObjCObjectOrInterfaceType( 1343 type_clang_forward_type)) 1344 class_opaque_type = type_clang_forward_type; 1345 } 1346 } 1347 1348 if (class_opaque_type) { 1349 // If accessibility isn't set to anything valid, assume public 1350 // for 1351 // now... 1352 if (accessibility == eAccessNone) 1353 accessibility = eAccessPublic; 1354 1355 clang::ObjCMethodDecl *objc_method_decl = 1356 m_ast.AddMethodToObjCObjectType( 1357 class_opaque_type, type_name_cstr, clang_type, 1358 accessibility, is_artificial, is_variadic); 1359 type_handled = objc_method_decl != NULL; 1360 if (type_handled) { 1361 LinkDeclContextToDIE( 1362 ClangASTContext::GetAsDeclContext(objc_method_decl), die); 1363 m_ast.SetMetadataAsUserID(objc_method_decl, die.GetID()); 1364 } else { 1365 dwarf->GetObjectFile()->GetModule()->ReportError( 1366 "{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), " 1367 "please file a bug and attach the file at the start of " 1368 "this error message", 1369 die.GetOffset(), tag, DW_TAG_value_to_name(tag)); 1370 } 1371 } 1372 } else if (is_cxx_method) { 1373 // Look at the parent of this DIE and see if is is 1374 // a class or struct and see if this is actually a 1375 // C++ method 1376 Type *class_type = dwarf->ResolveType(decl_ctx_die); 1377 if (class_type) { 1378 bool alternate_defn = false; 1379 if (class_type->GetID() != decl_ctx_die.GetID() || 1380 decl_ctx_die.GetContainingDWOModuleDIE()) { 1381 alternate_defn = true; 1382 1383 // We uniqued the parent class of this function to another 1384 // class 1385 // so we now need to associate all dies under "decl_ctx_die" 1386 // to 1387 // DIEs in the DIE for "class_type"... 1388 SymbolFileDWARF *class_symfile = NULL; 1389 DWARFDIE class_type_die; 1390 1391 SymbolFileDWARFDebugMap *debug_map_symfile = 1392 dwarf->GetDebugMapSymfile(); 1393 if (debug_map_symfile) { 1394 class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex( 1395 SymbolFileDWARFDebugMap::GetOSOIndexFromUserID( 1396 class_type->GetID())); 1397 class_type_die = class_symfile->DebugInfo()->GetDIE( 1398 DIERef(class_type->GetID(), dwarf)); 1399 } else { 1400 class_symfile = dwarf; 1401 class_type_die = dwarf->DebugInfo()->GetDIE( 1402 DIERef(class_type->GetID(), dwarf)); 1403 } 1404 if (class_type_die) { 1405 DWARFDIECollection failures; 1406 1407 CopyUniqueClassMethodTypes(decl_ctx_die, class_type_die, 1408 class_type, failures); 1409 1410 // FIXME do something with these failures that's smarter 1411 // than 1412 // just dropping them on the ground. Unfortunately classes 1413 // don't 1414 // like having stuff added to them after their definitions 1415 // are 1416 // complete... 1417 1418 type_ptr = dwarf->GetDIEToType()[die.GetDIE()]; 1419 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) { 1420 type_sp = type_ptr->shared_from_this(); 1421 break; 1422 } 1423 } 1424 } 1425 1426 if (specification_die_form.IsValid()) { 1427 // We have a specification which we are going to base our 1428 // function 1429 // prototype off of, so we need this type to be completed so 1430 // that the 1431 // m_die_to_decl_ctx for the method in the specification has a 1432 // valid 1433 // clang decl context. 1434 class_type->GetForwardCompilerType(); 1435 // If we have a specification, then the function type should 1436 // have been 1437 // made with the specification and not with this die. 1438 DWARFDIE spec_die = dwarf->DebugInfo()->GetDIE( 1439 DIERef(specification_die_form)); 1440 clang::DeclContext *spec_clang_decl_ctx = 1441 GetClangDeclContextForDIE(spec_die); 1442 if (spec_clang_decl_ctx) { 1443 LinkDeclContextToDIE(spec_clang_decl_ctx, die); 1444 } else { 1445 dwarf->GetObjectFile()->GetModule()->ReportWarning( 1446 "0x%8.8" PRIx64 ": DW_AT_specification(0x%8.8" PRIx64 1447 ") has no decl\n", 1448 die.GetID(), specification_die_form.Reference()); 1449 } 1450 type_handled = true; 1451 } else if (abstract_origin_die_form.IsValid()) { 1452 // We have a specification which we are going to base our 1453 // function 1454 // prototype off of, so we need this type to be completed so 1455 // that the 1456 // m_die_to_decl_ctx for the method in the abstract origin has 1457 // a valid 1458 // clang decl context. 1459 class_type->GetForwardCompilerType(); 1460 1461 DWARFDIE abs_die = dwarf->DebugInfo()->GetDIE( 1462 DIERef(abstract_origin_die_form)); 1463 clang::DeclContext *abs_clang_decl_ctx = 1464 GetClangDeclContextForDIE(abs_die); 1465 if (abs_clang_decl_ctx) { 1466 LinkDeclContextToDIE(abs_clang_decl_ctx, die); 1467 } else { 1468 dwarf->GetObjectFile()->GetModule()->ReportWarning( 1469 "0x%8.8" PRIx64 ": DW_AT_abstract_origin(0x%8.8" PRIx64 1470 ") has no decl\n", 1471 die.GetID(), abstract_origin_die_form.Reference()); 1472 } 1473 type_handled = true; 1474 } else { 1475 CompilerType class_opaque_type = 1476 class_type->GetForwardCompilerType(); 1477 if (ClangASTContext::IsCXXClassType(class_opaque_type)) { 1478 if (class_opaque_type.IsBeingDefined() || alternate_defn) { 1479 if (!is_static && !die.HasChildren()) { 1480 // We have a C++ member function with no children (this 1481 // pointer!) 1482 // and clang will get mad if we try and make a function 1483 // that isn't 1484 // well formed in the DWARF, so we will just skip it... 1485 type_handled = true; 1486 } else { 1487 bool add_method = true; 1488 if (alternate_defn) { 1489 // If an alternate definition for the class exists, 1490 // then add the method only if an 1491 // equivalent is not already present. 1492 clang::CXXRecordDecl *record_decl = 1493 m_ast.GetAsCXXRecordDecl( 1494 class_opaque_type.GetOpaqueQualType()); 1495 if (record_decl) { 1496 for (auto method_iter = record_decl->method_begin(); 1497 method_iter != record_decl->method_end(); 1498 method_iter++) { 1499 clang::CXXMethodDecl *method_decl = *method_iter; 1500 if (method_decl->getNameInfo().getAsString() == 1501 std::string(type_name_cstr)) { 1502 if (method_decl->getType() == 1503 ClangUtil::GetQualType(clang_type)) { 1504 add_method = false; 1505 LinkDeclContextToDIE( 1506 ClangASTContext::GetAsDeclContext( 1507 method_decl), 1508 die); 1509 type_handled = true; 1510 1511 break; 1512 } 1513 } 1514 } 1515 } 1516 } 1517 1518 if (add_method) { 1519 llvm::PrettyStackTraceFormat stack_trace( 1520 "SymbolFileDWARF::ParseType() is adding a method " 1521 "%s to class %s in DIE 0x%8.8" PRIx64 " from %s", 1522 type_name_cstr, 1523 class_type->GetName().GetCString(), die.GetID(), 1524 dwarf->GetObjectFile() 1525 ->GetFileSpec() 1526 .GetPath() 1527 .c_str()); 1528 1529 const bool is_attr_used = false; 1530 // Neither GCC 4.2 nor clang++ currently set a valid 1531 // accessibility 1532 // in the DWARF for C++ methods... Default to public 1533 // for now... 1534 if (accessibility == eAccessNone) 1535 accessibility = eAccessPublic; 1536 1537 clang::CXXMethodDecl *cxx_method_decl = 1538 m_ast.AddMethodToCXXRecordType( 1539 class_opaque_type.GetOpaqueQualType(), 1540 type_name_cstr, clang_type, accessibility, 1541 is_virtual, is_static, is_inline, is_explicit, 1542 is_attr_used, is_artificial); 1543 1544 type_handled = cxx_method_decl != NULL; 1545 1546 if (type_handled) { 1547 LinkDeclContextToDIE( 1548 ClangASTContext::GetAsDeclContext( 1549 cxx_method_decl), 1550 die); 1551 1552 ClangASTMetadata metadata; 1553 metadata.SetUserID(die.GetID()); 1554 1555 if (!object_pointer_name.empty()) { 1556 metadata.SetObjectPtrName( 1557 object_pointer_name.c_str()); 1558 if (log) 1559 log->Printf( 1560 "Setting object pointer name: %s on method " 1561 "object %p.\n", 1562 object_pointer_name.c_str(), 1563 static_cast<void *>(cxx_method_decl)); 1564 } 1565 m_ast.SetMetadata(cxx_method_decl, metadata); 1566 } else { 1567 ignore_containing_context = true; 1568 } 1569 } 1570 } 1571 } else { 1572 // We were asked to parse the type for a method in a 1573 // class, yet the 1574 // class hasn't been asked to complete itself through the 1575 // clang::ExternalASTSource protocol, so we need to just 1576 // have the 1577 // class complete itself and do things the right way, then 1578 // our 1579 // DIE should then have an entry in the 1580 // dwarf->GetDIEToType() map. First 1581 // we need to modify the dwarf->GetDIEToType() so it 1582 // doesn't think we are 1583 // trying to parse this DIE anymore... 1584 dwarf->GetDIEToType()[die.GetDIE()] = NULL; 1585 1586 // Now we get the full type to force our class type to 1587 // complete itself 1588 // using the clang::ExternalASTSource protocol which will 1589 // parse all 1590 // base classes and all methods (including the method for 1591 // this DIE). 1592 class_type->GetFullCompilerType(); 1593 1594 // The type for this DIE should have been filled in the 1595 // function call above 1596 type_ptr = dwarf->GetDIEToType()[die.GetDIE()]; 1597 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) { 1598 type_sp = type_ptr->shared_from_this(); 1599 break; 1600 } 1601 1602 // FIXME This is fixing some even uglier behavior but we 1603 // really need to 1604 // uniq the methods of each class as well as the class 1605 // itself. 1606 // <rdar://problem/11240464> 1607 type_handled = true; 1608 } 1609 } 1610 } 1611 } 1612 } 1613 } 1614 1615 if (!type_handled) { 1616 clang::FunctionDecl *function_decl = nullptr; 1617 1618 if (abstract_origin_die_form.IsValid()) { 1619 DWARFDIE abs_die = 1620 dwarf->DebugInfo()->GetDIE(DIERef(abstract_origin_die_form)); 1621 1622 SymbolContext sc; 1623 1624 if (dwarf->ResolveType(abs_die)) { 1625 function_decl = llvm::dyn_cast_or_null<clang::FunctionDecl>( 1626 GetCachedClangDeclContextForDIE(abs_die)); 1627 1628 if (function_decl) { 1629 LinkDeclContextToDIE(function_decl, die); 1630 } 1631 } 1632 } 1633 1634 if (!function_decl) { 1635 // We just have a function that isn't part of a class 1636 function_decl = m_ast.CreateFunctionDeclaration( 1637 ignore_containing_context ? m_ast.GetTranslationUnitDecl() 1638 : containing_decl_ctx, 1639 type_name_cstr, clang_type, storage, is_inline); 1640 1641 if (has_template_params) { 1642 ClangASTContext::TemplateParameterInfos template_param_infos; 1643 ParseTemplateParameterInfos(die, template_param_infos); 1644 clang::FunctionTemplateDecl *func_template_decl = 1645 m_ast.CreateFunctionTemplateDecl( 1646 containing_decl_ctx, function_decl, type_name_cstr, 1647 template_param_infos); 1648 m_ast.CreateFunctionTemplateSpecializationInfo( 1649 function_decl, func_template_decl, template_param_infos); 1650 } 1651 1652 lldbassert(function_decl); 1653 1654 if (function_decl) { 1655 LinkDeclContextToDIE(function_decl, die); 1656 1657 if (!function_param_decls.empty()) 1658 m_ast.SetFunctionParameters(function_decl, 1659 &function_param_decls.front(), 1660 function_param_decls.size()); 1661 1662 ClangASTMetadata metadata; 1663 metadata.SetUserID(die.GetID()); 1664 1665 if (!object_pointer_name.empty()) { 1666 metadata.SetObjectPtrName(object_pointer_name.c_str()); 1667 if (log) 1668 log->Printf("Setting object pointer name: %s on function " 1669 "object %p.", 1670 object_pointer_name.c_str(), 1671 static_cast<void *>(function_decl)); 1672 } 1673 m_ast.SetMetadata(function_decl, metadata); 1674 } 1675 } 1676 } 1677 } 1678 type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, 0, NULL, 1679 LLDB_INVALID_UID, Type::eEncodingIsUID, &decl, 1680 clang_type, Type::eResolveStateFull)); 1681 assert(type_sp.get()); 1682 } break; 1683 1684 case DW_TAG_array_type: { 1685 // Set a bit that lets us know that we are currently parsing this 1686 dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED; 1687 1688 DWARFFormValue type_die_form; 1689 int64_t first_index = 0; 1690 uint32_t byte_stride = 0; 1691 uint32_t bit_stride = 0; 1692 bool is_vector = false; 1693 const size_t num_attributes = die.GetAttributes(attributes); 1694 1695 if (num_attributes > 0) { 1696 uint32_t i; 1697 for (i = 0; i < num_attributes; ++i) { 1698 attr = attributes.AttributeAtIndex(i); 1699 if (attributes.ExtractFormValueAtIndex(i, form_value)) { 1700 switch (attr) { 1701 case DW_AT_decl_file: 1702 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( 1703 form_value.Unsigned())); 1704 break; 1705 case DW_AT_decl_line: 1706 decl.SetLine(form_value.Unsigned()); 1707 break; 1708 case DW_AT_decl_column: 1709 decl.SetColumn(form_value.Unsigned()); 1710 break; 1711 case DW_AT_name: 1712 type_name_cstr = form_value.AsCString(); 1713 type_name_const_str.SetCString(type_name_cstr); 1714 break; 1715 1716 case DW_AT_type: 1717 type_die_form = form_value; 1718 break; 1719 case DW_AT_byte_size: 1720 break; // byte_size = form_value.Unsigned(); break; 1721 case DW_AT_byte_stride: 1722 byte_stride = form_value.Unsigned(); 1723 break; 1724 case DW_AT_bit_stride: 1725 bit_stride = form_value.Unsigned(); 1726 break; 1727 case DW_AT_GNU_vector: 1728 is_vector = form_value.Boolean(); 1729 break; 1730 case DW_AT_accessibility: 1731 break; // accessibility = 1732 // DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 1733 case DW_AT_declaration: 1734 break; // is_forward_declaration = form_value.Boolean(); break; 1735 case DW_AT_allocated: 1736 case DW_AT_associated: 1737 case DW_AT_data_location: 1738 case DW_AT_description: 1739 case DW_AT_ordering: 1740 case DW_AT_start_scope: 1741 case DW_AT_visibility: 1742 case DW_AT_specification: 1743 case DW_AT_abstract_origin: 1744 case DW_AT_sibling: 1745 break; 1746 } 1747 } 1748 } 1749 1750 DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), 1751 DW_TAG_value_to_name(tag), type_name_cstr); 1752 1753 DIERef type_die_ref(type_die_form); 1754 Type *element_type = dwarf->ResolveTypeUID(type_die_ref); 1755 1756 if (element_type) { 1757 std::vector<uint64_t> element_orders; 1758 ParseChildArrayInfo(sc, die, first_index, element_orders, 1759 byte_stride, bit_stride); 1760 if (byte_stride == 0 && bit_stride == 0) 1761 byte_stride = element_type->GetByteSize(); 1762 CompilerType array_element_type = 1763 element_type->GetForwardCompilerType(); 1764 1765 if (ClangASTContext::IsCXXClassType(array_element_type) && 1766 array_element_type.GetCompleteType() == false) { 1767 ModuleSP module_sp = die.GetModule(); 1768 if (module_sp) { 1769 if (die.GetCU()->GetProducer() == eProducerClang) 1770 module_sp->ReportError( 1771 "DWARF DW_TAG_array_type DIE at 0x%8.8x has a " 1772 "class/union/struct element type DIE 0x%8.8x that is a " 1773 "forward declaration, not a complete definition.\nTry " 1774 "compiling the source file with -fstandalone-debug or " 1775 "disable -gmodules", 1776 die.GetOffset(), type_die_ref.die_offset); 1777 else 1778 module_sp->ReportError( 1779 "DWARF DW_TAG_array_type DIE at 0x%8.8x has a " 1780 "class/union/struct element type DIE 0x%8.8x that is a " 1781 "forward declaration, not a complete definition.\nPlease " 1782 "file a bug against the compiler and include the " 1783 "preprocessed output for %s", 1784 die.GetOffset(), type_die_ref.die_offset, 1785 die.GetLLDBCompileUnit() 1786 ? die.GetLLDBCompileUnit()->GetPath().c_str() 1787 : "the source file"); 1788 } 1789 1790 // We have no choice other than to pretend that the element class 1791 // type 1792 // is complete. If we don't do this, clang will crash when trying 1793 // to layout the class. Since we provide layout assistance, all 1794 // ivars in this class and other classes will be fine, this is 1795 // the best we can do short of crashing. 1796 if (ClangASTContext::StartTagDeclarationDefinition( 1797 array_element_type)) { 1798 ClangASTContext::CompleteTagDeclarationDefinition( 1799 array_element_type); 1800 } else { 1801 module_sp->ReportError("DWARF DIE at 0x%8.8x was not able to " 1802 "start its definition.\nPlease file a " 1803 "bug and attach the file at the start " 1804 "of this error message", 1805 type_die_ref.die_offset); 1806 } 1807 } 1808 1809 uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride; 1810 if (element_orders.size() > 0) { 1811 uint64_t num_elements = 0; 1812 std::vector<uint64_t>::const_reverse_iterator pos; 1813 std::vector<uint64_t>::const_reverse_iterator end = 1814 element_orders.rend(); 1815 for (pos = element_orders.rbegin(); pos != end; ++pos) { 1816 num_elements = *pos; 1817 clang_type = m_ast.CreateArrayType(array_element_type, 1818 num_elements, is_vector); 1819 array_element_type = clang_type; 1820 array_element_bit_stride = 1821 num_elements ? array_element_bit_stride * num_elements 1822 : array_element_bit_stride; 1823 } 1824 } else { 1825 clang_type = 1826 m_ast.CreateArrayType(array_element_type, 0, is_vector); 1827 } 1828 ConstString empty_name; 1829 type_sp.reset(new Type( 1830 die.GetID(), dwarf, empty_name, array_element_bit_stride / 8, 1831 NULL, DIERef(type_die_form).GetUID(dwarf), Type::eEncodingIsUID, 1832 &decl, clang_type, Type::eResolveStateFull)); 1833 type_sp->SetEncodingType(element_type); 1834 } 1835 } 1836 } break; 1837 1838 case DW_TAG_ptr_to_member_type: { 1839 DWARFFormValue type_die_form; 1840 DWARFFormValue containing_type_die_form; 1841 1842 const size_t num_attributes = die.GetAttributes(attributes); 1843 1844 if (num_attributes > 0) { 1845 uint32_t i; 1846 for (i = 0; i < num_attributes; ++i) { 1847 attr = attributes.AttributeAtIndex(i); 1848 if (attributes.ExtractFormValueAtIndex(i, form_value)) { 1849 switch (attr) { 1850 case DW_AT_type: 1851 type_die_form = form_value; 1852 break; 1853 case DW_AT_containing_type: 1854 containing_type_die_form = form_value; 1855 break; 1856 } 1857 } 1858 } 1859 1860 Type *pointee_type = dwarf->ResolveTypeUID(DIERef(type_die_form)); 1861 Type *class_type = 1862 dwarf->ResolveTypeUID(DIERef(containing_type_die_form)); 1863 1864 CompilerType pointee_clang_type = 1865 pointee_type->GetForwardCompilerType(); 1866 CompilerType class_clang_type = class_type->GetLayoutCompilerType(); 1867 1868 clang_type = ClangASTContext::CreateMemberPointerType( 1869 class_clang_type, pointee_clang_type); 1870 1871 byte_size = clang_type.GetByteSize(nullptr); 1872 1873 type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, 1874 byte_size, NULL, LLDB_INVALID_UID, 1875 Type::eEncodingIsUID, NULL, clang_type, 1876 Type::eResolveStateForward)); 1877 } 1878 1879 break; 1880 } 1881 default: 1882 dwarf->GetObjectFile()->GetModule()->ReportError( 1883 "{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and " 1884 "attach the file at the start of this error message", 1885 die.GetOffset(), tag, DW_TAG_value_to_name(tag)); 1886 break; 1887 } 1888 1889 if (type_sp.get()) { 1890 DWARFDIE sc_parent_die = 1891 SymbolFileDWARF::GetParentSymbolContextDIE(die); 1892 dw_tag_t sc_parent_tag = sc_parent_die.Tag(); 1893 1894 SymbolContextScope *symbol_context_scope = NULL; 1895 if (sc_parent_tag == DW_TAG_compile_unit) { 1896 symbol_context_scope = sc.comp_unit; 1897 } else if (sc.function != NULL && sc_parent_die) { 1898 symbol_context_scope = 1899 sc.function->GetBlock(true).FindBlockByID(sc_parent_die.GetID()); 1900 if (symbol_context_scope == NULL) 1901 symbol_context_scope = sc.function; 1902 } 1903 1904 if (symbol_context_scope != NULL) { 1905 type_sp->SetSymbolContextScope(symbol_context_scope); 1906 } 1907 1908 // We are ready to put this type into the uniqued list up at the module 1909 // level 1910 type_list->Insert(type_sp); 1911 1912 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); 1913 } 1914 } else if (type_ptr != DIE_IS_BEING_PARSED) { 1915 type_sp = type_ptr->shared_from_this(); 1916 } 1917 } 1918 return type_sp; 1919 } 1920 1921 // DWARF parsing functions 1922 1923 class DWARFASTParserClang::DelayedAddObjCClassProperty { 1924 public: 1925 DelayedAddObjCClassProperty( 1926 const CompilerType &class_opaque_type, const char *property_name, 1927 const CompilerType &property_opaque_type, // The property type is only 1928 // required if you don't have an 1929 // ivar decl 1930 clang::ObjCIvarDecl *ivar_decl, const char *property_setter_name, 1931 const char *property_getter_name, uint32_t property_attributes, 1932 const ClangASTMetadata *metadata) 1933 : m_class_opaque_type(class_opaque_type), m_property_name(property_name), 1934 m_property_opaque_type(property_opaque_type), m_ivar_decl(ivar_decl), 1935 m_property_setter_name(property_setter_name), 1936 m_property_getter_name(property_getter_name), 1937 m_property_attributes(property_attributes) { 1938 if (metadata != NULL) { 1939 m_metadata_ap.reset(new ClangASTMetadata()); 1940 *m_metadata_ap = *metadata; 1941 } 1942 } 1943 1944 DelayedAddObjCClassProperty(const DelayedAddObjCClassProperty &rhs) { 1945 *this = rhs; 1946 } 1947 1948 DelayedAddObjCClassProperty & 1949 operator=(const DelayedAddObjCClassProperty &rhs) { 1950 m_class_opaque_type = rhs.m_class_opaque_type; 1951 m_property_name = rhs.m_property_name; 1952 m_property_opaque_type = rhs.m_property_opaque_type; 1953 m_ivar_decl = rhs.m_ivar_decl; 1954 m_property_setter_name = rhs.m_property_setter_name; 1955 m_property_getter_name = rhs.m_property_getter_name; 1956 m_property_attributes = rhs.m_property_attributes; 1957 1958 if (rhs.m_metadata_ap.get()) { 1959 m_metadata_ap.reset(new ClangASTMetadata()); 1960 *m_metadata_ap = *rhs.m_metadata_ap; 1961 } 1962 return *this; 1963 } 1964 1965 bool Finalize() { 1966 return ClangASTContext::AddObjCClassProperty( 1967 m_class_opaque_type, m_property_name, m_property_opaque_type, 1968 m_ivar_decl, m_property_setter_name, m_property_getter_name, 1969 m_property_attributes, m_metadata_ap.get()); 1970 } 1971 1972 private: 1973 CompilerType m_class_opaque_type; 1974 const char *m_property_name; 1975 CompilerType m_property_opaque_type; 1976 clang::ObjCIvarDecl *m_ivar_decl; 1977 const char *m_property_setter_name; 1978 const char *m_property_getter_name; 1979 uint32_t m_property_attributes; 1980 std::unique_ptr<ClangASTMetadata> m_metadata_ap; 1981 }; 1982 1983 bool DWARFASTParserClang::ParseTemplateDIE( 1984 const DWARFDIE &die, 1985 ClangASTContext::TemplateParameterInfos &template_param_infos) { 1986 const dw_tag_t tag = die.Tag(); 1987 1988 switch (tag) { 1989 case DW_TAG_GNU_template_parameter_pack: { 1990 template_param_infos.packed_args.reset( 1991 new ClangASTContext::TemplateParameterInfos); 1992 for (DWARFDIE child_die = die.GetFirstChild(); child_die.IsValid(); 1993 child_die = child_die.GetSibling()) { 1994 if (!ParseTemplateDIE(child_die, *template_param_infos.packed_args)) 1995 return false; 1996 } 1997 if (const char *name = die.GetName()) { 1998 template_param_infos.pack_name = name; 1999 } 2000 return true; 2001 } 2002 case DW_TAG_template_type_parameter: 2003 case DW_TAG_template_value_parameter: { 2004 DWARFAttributes attributes; 2005 const size_t num_attributes = die.GetAttributes(attributes); 2006 const char *name = nullptr; 2007 CompilerType clang_type; 2008 uint64_t uval64 = 0; 2009 bool uval64_valid = false; 2010 if (num_attributes > 0) { 2011 DWARFFormValue form_value; 2012 for (size_t i = 0; i < num_attributes; ++i) { 2013 const dw_attr_t attr = attributes.AttributeAtIndex(i); 2014 2015 switch (attr) { 2016 case DW_AT_name: 2017 if (attributes.ExtractFormValueAtIndex(i, form_value)) 2018 name = form_value.AsCString(); 2019 break; 2020 2021 case DW_AT_type: 2022 if (attributes.ExtractFormValueAtIndex(i, form_value)) { 2023 Type *lldb_type = die.ResolveTypeUID(DIERef(form_value)); 2024 if (lldb_type) 2025 clang_type = lldb_type->GetForwardCompilerType(); 2026 } 2027 break; 2028 2029 case DW_AT_const_value: 2030 if (attributes.ExtractFormValueAtIndex(i, form_value)) { 2031 uval64_valid = true; 2032 uval64 = form_value.Unsigned(); 2033 } 2034 break; 2035 default: 2036 break; 2037 } 2038 } 2039 2040 clang::ASTContext *ast = m_ast.getASTContext(); 2041 if (!clang_type) 2042 clang_type = m_ast.GetBasicType(eBasicTypeVoid); 2043 2044 if (clang_type) { 2045 bool is_signed = false; 2046 if (name && name[0]) 2047 template_param_infos.names.push_back(name); 2048 else 2049 template_param_infos.names.push_back(NULL); 2050 2051 // Get the signed value for any integer or enumeration if available 2052 clang_type.IsIntegerOrEnumerationType(is_signed); 2053 2054 if (tag == DW_TAG_template_value_parameter && uval64_valid) { 2055 llvm::APInt apint(clang_type.GetBitSize(nullptr), uval64, is_signed); 2056 template_param_infos.args.push_back( 2057 clang::TemplateArgument(*ast, llvm::APSInt(apint, !is_signed), 2058 ClangUtil::GetQualType(clang_type))); 2059 } else { 2060 template_param_infos.args.push_back( 2061 clang::TemplateArgument(ClangUtil::GetQualType(clang_type))); 2062 } 2063 } else { 2064 return false; 2065 } 2066 } 2067 } 2068 return true; 2069 2070 default: 2071 break; 2072 } 2073 return false; 2074 } 2075 2076 bool DWARFASTParserClang::ParseTemplateParameterInfos( 2077 const DWARFDIE &parent_die, 2078 ClangASTContext::TemplateParameterInfos &template_param_infos) { 2079 2080 if (!parent_die) 2081 return false; 2082 2083 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); 2084 die = die.GetSibling()) { 2085 const dw_tag_t tag = die.Tag(); 2086 2087 switch (tag) { 2088 case DW_TAG_template_type_parameter: 2089 case DW_TAG_template_value_parameter: 2090 case DW_TAG_GNU_template_parameter_pack: 2091 ParseTemplateDIE(die, template_param_infos); 2092 break; 2093 2094 default: 2095 break; 2096 } 2097 } 2098 if (template_param_infos.args.empty()) 2099 return false; 2100 return template_param_infos.args.size() == template_param_infos.names.size(); 2101 } 2102 2103 // Checks whether m1 is an overload of m2 (as opposed to an override). 2104 // This is called by addOverridesForMethod to distinguish overrides (which share 2105 // a vtable entry) from overloads (which require distinct entries). 2106 static bool isOverload(clang::CXXMethodDecl *m1, clang::CXXMethodDecl *m2) { 2107 // FIXME: This should detect covariant return types, but currently doesn't. 2108 lldbassert(&m1->getASTContext() == &m2->getASTContext() && 2109 "Methods should have the same AST context"); 2110 clang::ASTContext &context = m1->getASTContext(); 2111 2112 const auto *m1Type = 2113 llvm::cast<clang::FunctionProtoType>( 2114 context.getCanonicalType(m1->getType())); 2115 2116 const auto *m2Type = 2117 llvm::cast<clang::FunctionProtoType>( 2118 context.getCanonicalType(m2->getType())); 2119 2120 auto compareArgTypes = 2121 [&context](const clang::QualType &m1p, const clang::QualType &m2p) { 2122 return context.hasSameType(m1p.getUnqualifiedType(), 2123 m2p.getUnqualifiedType()); 2124 }; 2125 2126 return !std::equal(m1Type->param_type_begin(), m1Type->param_type_end(), 2127 m2Type->param_type_begin(), compareArgTypes); 2128 } 2129 2130 // If decl is a virtual method, walk the base classes looking for methods that 2131 // decl overrides. This table of overridden methods is used by IRGen to determine 2132 // the vtable layout for decl's parent class. 2133 static void addOverridesForMethod(clang::CXXMethodDecl *decl) { 2134 if (!decl->isVirtual()) 2135 return; 2136 2137 clang::CXXBasePaths paths; 2138 2139 auto find_overridden_methods = 2140 [decl](const clang::CXXBaseSpecifier *specifier, clang::CXXBasePath &path) { 2141 if (auto *base_record = 2142 llvm::dyn_cast<clang::CXXRecordDecl>( 2143 specifier->getType()->getAs<clang::RecordType>()->getDecl())) { 2144 2145 clang::DeclarationName name = decl->getDeclName(); 2146 2147 // If this is a destructor, check whether the base class destructor is 2148 // virtual. 2149 if (name.getNameKind() == clang::DeclarationName::CXXDestructorName) 2150 if (auto *baseDtorDecl = base_record->getDestructor()) { 2151 if (baseDtorDecl->isVirtual()) { 2152 path.Decls = baseDtorDecl; 2153 return true; 2154 } else 2155 return false; 2156 } 2157 2158 // Otherwise, search for name in the base class. 2159 for (path.Decls = base_record->lookup(name); !path.Decls.empty(); 2160 path.Decls = path.Decls.slice(1)) { 2161 if (auto *method_decl = 2162 llvm::dyn_cast<clang::CXXMethodDecl>(path.Decls.front())) 2163 if (method_decl->isVirtual() && !isOverload(decl, method_decl)) { 2164 path.Decls = method_decl; 2165 return true; 2166 } 2167 } 2168 } 2169 2170 return false; 2171 }; 2172 2173 if (decl->getParent()->lookupInBases(find_overridden_methods, paths)) { 2174 for (auto *overridden_decl : paths.found_decls()) 2175 decl->addOverriddenMethod( 2176 llvm::cast<clang::CXXMethodDecl>(overridden_decl)); 2177 } 2178 } 2179 2180 // If clang_type is a CXXRecordDecl, builds the method override list for each 2181 // of its virtual methods. 2182 static void addMethodOverrides(ClangASTContext &ast, CompilerType &clang_type) { 2183 if (auto *record = 2184 ast.GetAsCXXRecordDecl(clang_type.GetOpaqueQualType())) 2185 for (auto *method : record->methods()) 2186 addOverridesForMethod(method); 2187 } 2188 2189 bool DWARFASTParserClang::CompleteTypeFromDWARF(const DWARFDIE &die, 2190 lldb_private::Type *type, 2191 CompilerType &clang_type) { 2192 SymbolFileDWARF *dwarf = die.GetDWARF(); 2193 2194 std::lock_guard<std::recursive_mutex> guard( 2195 dwarf->GetObjectFile()->GetModule()->GetMutex()); 2196 2197 // Disable external storage for this type so we don't get anymore 2198 // clang::ExternalASTSource queries for this type. 2199 m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), false); 2200 2201 if (!die) 2202 return false; 2203 2204 #if defined LLDB_CONFIGURATION_DEBUG 2205 //---------------------------------------------------------------------- 2206 // For debugging purposes, the LLDB_DWARF_DONT_COMPLETE_TYPENAMES 2207 // environment variable can be set with one or more typenames separated 2208 // by ';' characters. This will cause this function to not complete any 2209 // types whose names match. 2210 // 2211 // Examples of setting this environment variable: 2212 // 2213 // LLDB_DWARF_DONT_COMPLETE_TYPENAMES=Foo 2214 // LLDB_DWARF_DONT_COMPLETE_TYPENAMES=Foo;Bar;Baz 2215 //---------------------------------------------------------------------- 2216 const char *dont_complete_typenames_cstr = 2217 getenv("LLDB_DWARF_DONT_COMPLETE_TYPENAMES"); 2218 if (dont_complete_typenames_cstr && dont_complete_typenames_cstr[0]) { 2219 const char *die_name = die.GetName(); 2220 if (die_name && die_name[0]) { 2221 const char *match = strstr(dont_complete_typenames_cstr, die_name); 2222 if (match) { 2223 size_t die_name_length = strlen(die_name); 2224 while (match) { 2225 const char separator_char = ';'; 2226 const char next_char = match[die_name_length]; 2227 if (next_char == '\0' || next_char == separator_char) { 2228 if (match == dont_complete_typenames_cstr || 2229 match[-1] == separator_char) 2230 return false; 2231 } 2232 match = strstr(match + 1, die_name); 2233 } 2234 } 2235 } 2236 } 2237 #endif 2238 2239 const dw_tag_t tag = die.Tag(); 2240 2241 Log *log = 2242 nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION)); 2243 if (log) 2244 dwarf->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace( 2245 log, "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...", 2246 die.GetID(), die.GetTagAsCString(), type->GetName().AsCString()); 2247 assert(clang_type); 2248 DWARFAttributes attributes; 2249 switch (tag) { 2250 case DW_TAG_structure_type: 2251 case DW_TAG_union_type: 2252 case DW_TAG_class_type: { 2253 ClangASTImporter::LayoutInfo layout_info; 2254 2255 { 2256 if (die.HasChildren()) { 2257 LanguageType class_language = eLanguageTypeUnknown; 2258 if (ClangASTContext::IsObjCObjectOrInterfaceType(clang_type)) { 2259 class_language = eLanguageTypeObjC; 2260 // For objective C we don't start the definition when 2261 // the class is created. 2262 ClangASTContext::StartTagDeclarationDefinition(clang_type); 2263 } 2264 2265 int tag_decl_kind = -1; 2266 AccessType default_accessibility = eAccessNone; 2267 if (tag == DW_TAG_structure_type) { 2268 tag_decl_kind = clang::TTK_Struct; 2269 default_accessibility = eAccessPublic; 2270 } else if (tag == DW_TAG_union_type) { 2271 tag_decl_kind = clang::TTK_Union; 2272 default_accessibility = eAccessPublic; 2273 } else if (tag == DW_TAG_class_type) { 2274 tag_decl_kind = clang::TTK_Class; 2275 default_accessibility = eAccessPrivate; 2276 } 2277 2278 SymbolContext sc(die.GetLLDBCompileUnit()); 2279 std::vector<clang::CXXBaseSpecifier *> base_classes; 2280 std::vector<int> member_accessibilities; 2281 bool is_a_class = false; 2282 // Parse members and base classes first 2283 DWARFDIECollection member_function_dies; 2284 2285 DelayedPropertyList delayed_properties; 2286 ParseChildMembers(sc, die, clang_type, class_language, base_classes, 2287 member_accessibilities, member_function_dies, 2288 delayed_properties, default_accessibility, is_a_class, 2289 layout_info); 2290 2291 // Now parse any methods if there were any... 2292 size_t num_functions = member_function_dies.Size(); 2293 if (num_functions > 0) { 2294 for (size_t i = 0; i < num_functions; ++i) { 2295 dwarf->ResolveType(member_function_dies.GetDIEAtIndex(i)); 2296 } 2297 } 2298 2299 if (class_language == eLanguageTypeObjC) { 2300 ConstString class_name(clang_type.GetTypeName()); 2301 if (class_name) { 2302 DIEArray method_die_offsets; 2303 dwarf->GetObjCMethodDIEOffsets(class_name, method_die_offsets); 2304 2305 if (!method_die_offsets.empty()) { 2306 DWARFDebugInfo *debug_info = dwarf->DebugInfo(); 2307 2308 const size_t num_matches = method_die_offsets.size(); 2309 for (size_t i = 0; i < num_matches; ++i) { 2310 const DIERef &die_ref = method_die_offsets[i]; 2311 DWARFDIE method_die = debug_info->GetDIE(die_ref); 2312 2313 if (method_die) 2314 method_die.ResolveType(); 2315 } 2316 } 2317 2318 for (DelayedPropertyList::iterator pi = delayed_properties.begin(), 2319 pe = delayed_properties.end(); 2320 pi != pe; ++pi) 2321 pi->Finalize(); 2322 } 2323 } 2324 2325 // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we 2326 // need to tell the clang type it is actually a class. 2327 if (class_language != eLanguageTypeObjC) { 2328 if (is_a_class && tag_decl_kind != clang::TTK_Class) 2329 m_ast.SetTagTypeKind(ClangUtil::GetQualType(clang_type), 2330 clang::TTK_Class); 2331 } 2332 2333 // Since DW_TAG_structure_type gets used for both classes 2334 // and structures, we may need to set any DW_TAG_member 2335 // fields to have a "private" access if none was specified. 2336 // When we parsed the child members we tracked that actual 2337 // accessibility value for each DW_TAG_member in the 2338 // "member_accessibilities" array. If the value for the 2339 // member is zero, then it was set to the "default_accessibility" 2340 // which for structs was "public". Below we correct this 2341 // by setting any fields to "private" that weren't correctly 2342 // set. 2343 if (is_a_class && !member_accessibilities.empty()) { 2344 // This is a class and all members that didn't have 2345 // their access specified are private. 2346 m_ast.SetDefaultAccessForRecordFields( 2347 m_ast.GetAsRecordDecl(clang_type), eAccessPrivate, 2348 &member_accessibilities.front(), member_accessibilities.size()); 2349 } 2350 2351 if (!base_classes.empty()) { 2352 // Make sure all base classes refer to complete types and not 2353 // forward declarations. If we don't do this, clang will crash 2354 // with an assertion in the call to 2355 // clang_type.SetBaseClassesForClassType() 2356 for (auto &base_class : base_classes) { 2357 clang::TypeSourceInfo *type_source_info = 2358 base_class->getTypeSourceInfo(); 2359 if (type_source_info) { 2360 CompilerType base_class_type( 2361 &m_ast, type_source_info->getType().getAsOpaquePtr()); 2362 if (base_class_type.GetCompleteType() == false) { 2363 auto module = dwarf->GetObjectFile()->GetModule(); 2364 module->ReportError(":: Class '%s' has a base class '%s' which " 2365 "does not have a complete definition.", 2366 die.GetName(), 2367 base_class_type.GetTypeName().GetCString()); 2368 if (die.GetCU()->GetProducer() == eProducerClang) 2369 module->ReportError(":: Try compiling the source file with " 2370 "-fstandalone-debug."); 2371 2372 // We have no choice other than to pretend that the base class 2373 // is complete. If we don't do this, clang will crash when we 2374 // call setBases() inside of 2375 // "clang_type.SetBaseClassesForClassType()" 2376 // below. Since we provide layout assistance, all ivars in this 2377 // class and other classes will be fine, this is the best we can 2378 // do 2379 // short of crashing. 2380 if (ClangASTContext::StartTagDeclarationDefinition( 2381 base_class_type)) { 2382 ClangASTContext::CompleteTagDeclarationDefinition( 2383 base_class_type); 2384 } 2385 } 2386 } 2387 } 2388 m_ast.SetBaseClassesForClassType(clang_type.GetOpaqueQualType(), 2389 &base_classes.front(), 2390 base_classes.size()); 2391 2392 // Clang will copy each CXXBaseSpecifier in "base_classes" 2393 // so we have to free them all. 2394 ClangASTContext::DeleteBaseClassSpecifiers(&base_classes.front(), 2395 base_classes.size()); 2396 } 2397 } 2398 } 2399 2400 addMethodOverrides(m_ast, clang_type); 2401 ClangASTContext::BuildIndirectFields(clang_type); 2402 ClangASTContext::CompleteTagDeclarationDefinition(clang_type); 2403 2404 if (!layout_info.field_offsets.empty() || 2405 !layout_info.base_offsets.empty() || 2406 !layout_info.vbase_offsets.empty()) { 2407 if (type) 2408 layout_info.bit_size = type->GetByteSize() * 8; 2409 if (layout_info.bit_size == 0) 2410 layout_info.bit_size = 2411 die.GetAttributeValueAsUnsigned(DW_AT_byte_size, 0) * 8; 2412 2413 clang::CXXRecordDecl *record_decl = 2414 m_ast.GetAsCXXRecordDecl(clang_type.GetOpaqueQualType()); 2415 if (record_decl) { 2416 if (log) { 2417 ModuleSP module_sp = dwarf->GetObjectFile()->GetModule(); 2418 2419 if (module_sp) { 2420 module_sp->LogMessage( 2421 log, 2422 "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) " 2423 "caching layout info for record_decl = %p, bit_size = %" PRIu64 2424 ", alignment = %" PRIu64 2425 ", field_offsets[%u], base_offsets[%u], vbase_offsets[%u])", 2426 static_cast<void *>(clang_type.GetOpaqueQualType()), 2427 static_cast<void *>(record_decl), layout_info.bit_size, 2428 layout_info.alignment, 2429 static_cast<uint32_t>(layout_info.field_offsets.size()), 2430 static_cast<uint32_t>(layout_info.base_offsets.size()), 2431 static_cast<uint32_t>(layout_info.vbase_offsets.size())); 2432 2433 uint32_t idx; 2434 { 2435 llvm::DenseMap<const clang::FieldDecl *, uint64_t>::const_iterator 2436 pos, 2437 end = layout_info.field_offsets.end(); 2438 for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; 2439 ++pos, ++idx) { 2440 module_sp->LogMessage( 2441 log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " 2442 "%p) field[%u] = { bit_offset=%u, name='%s' }", 2443 static_cast<void *>(clang_type.GetOpaqueQualType()), idx, 2444 static_cast<uint32_t>(pos->second), 2445 pos->first->getNameAsString().c_str()); 2446 } 2447 } 2448 2449 { 2450 llvm::DenseMap<const clang::CXXRecordDecl *, 2451 clang::CharUnits>::const_iterator base_pos, 2452 base_end = layout_info.base_offsets.end(); 2453 for (idx = 0, base_pos = layout_info.base_offsets.begin(); 2454 base_pos != base_end; ++base_pos, ++idx) { 2455 module_sp->LogMessage( 2456 log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " 2457 "%p) base[%u] = { byte_offset=%u, name='%s' }", 2458 clang_type.GetOpaqueQualType(), idx, 2459 (uint32_t)base_pos->second.getQuantity(), 2460 base_pos->first->getNameAsString().c_str()); 2461 } 2462 } 2463 { 2464 llvm::DenseMap<const clang::CXXRecordDecl *, 2465 clang::CharUnits>::const_iterator vbase_pos, 2466 vbase_end = layout_info.vbase_offsets.end(); 2467 for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); 2468 vbase_pos != vbase_end; ++vbase_pos, ++idx) { 2469 module_sp->LogMessage( 2470 log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " 2471 "%p) vbase[%u] = { byte_offset=%u, name='%s' }", 2472 static_cast<void *>(clang_type.GetOpaqueQualType()), idx, 2473 static_cast<uint32_t>(vbase_pos->second.getQuantity()), 2474 vbase_pos->first->getNameAsString().c_str()); 2475 } 2476 } 2477 } 2478 } 2479 GetClangASTImporter().InsertRecordDecl(record_decl, layout_info); 2480 } 2481 } 2482 } 2483 2484 return (bool)clang_type; 2485 2486 case DW_TAG_enumeration_type: 2487 if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { 2488 if (die.HasChildren()) { 2489 SymbolContext sc(die.GetLLDBCompileUnit()); 2490 bool is_signed = false; 2491 clang_type.IsIntegerType(is_signed); 2492 ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), 2493 die); 2494 } 2495 ClangASTContext::CompleteTagDeclarationDefinition(clang_type); 2496 } 2497 return (bool)clang_type; 2498 2499 default: 2500 assert(false && "not a forward clang type decl!"); 2501 break; 2502 } 2503 2504 return false; 2505 } 2506 2507 std::vector<DWARFDIE> DWARFASTParserClang::GetDIEForDeclContext( 2508 lldb_private::CompilerDeclContext decl_context) { 2509 std::vector<DWARFDIE> result; 2510 for (auto it = m_decl_ctx_to_die.find( 2511 (clang::DeclContext *)decl_context.GetOpaqueDeclContext()); 2512 it != m_decl_ctx_to_die.end(); it++) 2513 result.push_back(it->second); 2514 return result; 2515 } 2516 2517 CompilerDecl DWARFASTParserClang::GetDeclForUIDFromDWARF(const DWARFDIE &die) { 2518 clang::Decl *clang_decl = GetClangDeclForDIE(die); 2519 if (clang_decl != nullptr) 2520 return CompilerDecl(&m_ast, clang_decl); 2521 return CompilerDecl(); 2522 } 2523 2524 CompilerDeclContext 2525 DWARFASTParserClang::GetDeclContextForUIDFromDWARF(const DWARFDIE &die) { 2526 clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE(die); 2527 if (clang_decl_ctx) 2528 return CompilerDeclContext(&m_ast, clang_decl_ctx); 2529 return CompilerDeclContext(); 2530 } 2531 2532 CompilerDeclContext 2533 DWARFASTParserClang::GetDeclContextContainingUIDFromDWARF(const DWARFDIE &die) { 2534 clang::DeclContext *clang_decl_ctx = 2535 GetClangDeclContextContainingDIE(die, nullptr); 2536 if (clang_decl_ctx) 2537 return CompilerDeclContext(&m_ast, clang_decl_ctx); 2538 return CompilerDeclContext(); 2539 } 2540 2541 size_t DWARFASTParserClang::ParseChildEnumerators( 2542 const SymbolContext &sc, lldb_private::CompilerType &clang_type, 2543 bool is_signed, uint32_t enumerator_byte_size, const DWARFDIE &parent_die) { 2544 if (!parent_die) 2545 return 0; 2546 2547 size_t enumerators_added = 0; 2548 2549 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); 2550 die = die.GetSibling()) { 2551 const dw_tag_t tag = die.Tag(); 2552 if (tag == DW_TAG_enumerator) { 2553 DWARFAttributes attributes; 2554 const size_t num_child_attributes = die.GetAttributes(attributes); 2555 if (num_child_attributes > 0) { 2556 const char *name = NULL; 2557 bool got_value = false; 2558 int64_t enum_value = 0; 2559 Declaration decl; 2560 2561 uint32_t i; 2562 for (i = 0; i < num_child_attributes; ++i) { 2563 const dw_attr_t attr = attributes.AttributeAtIndex(i); 2564 DWARFFormValue form_value; 2565 if (attributes.ExtractFormValueAtIndex(i, form_value)) { 2566 switch (attr) { 2567 case DW_AT_const_value: 2568 got_value = true; 2569 if (is_signed) 2570 enum_value = form_value.Signed(); 2571 else 2572 enum_value = form_value.Unsigned(); 2573 break; 2574 2575 case DW_AT_name: 2576 name = form_value.AsCString(); 2577 break; 2578 2579 case DW_AT_description: 2580 default: 2581 case DW_AT_decl_file: 2582 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( 2583 form_value.Unsigned())); 2584 break; 2585 case DW_AT_decl_line: 2586 decl.SetLine(form_value.Unsigned()); 2587 break; 2588 case DW_AT_decl_column: 2589 decl.SetColumn(form_value.Unsigned()); 2590 break; 2591 case DW_AT_sibling: 2592 break; 2593 } 2594 } 2595 } 2596 2597 if (name && name[0] && got_value) { 2598 m_ast.AddEnumerationValueToEnumerationType( 2599 clang_type.GetOpaqueQualType(), 2600 m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType()), 2601 decl, name, enum_value, enumerator_byte_size * 8); 2602 ++enumerators_added; 2603 } 2604 } 2605 } 2606 } 2607 return enumerators_added; 2608 } 2609 2610 #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE) 2611 2612 class DIEStack { 2613 public: 2614 void Push(const DWARFDIE &die) { m_dies.push_back(die); } 2615 2616 void LogDIEs(Log *log) { 2617 StreamString log_strm; 2618 const size_t n = m_dies.size(); 2619 log_strm.Printf("DIEStack[%" PRIu64 "]:\n", (uint64_t)n); 2620 for (size_t i = 0; i < n; i++) { 2621 std::string qualified_name; 2622 const DWARFDIE &die = m_dies[i]; 2623 die.GetQualifiedName(qualified_name); 2624 log_strm.Printf("[%" PRIu64 "] 0x%8.8x: %s name='%s'\n", (uint64_t)i, 2625 die.GetOffset(), die.GetTagAsCString(), 2626 qualified_name.c_str()); 2627 } 2628 log->PutCString(log_strm.GetData()); 2629 } 2630 void Pop() { m_dies.pop_back(); } 2631 2632 class ScopedPopper { 2633 public: 2634 ScopedPopper(DIEStack &die_stack) 2635 : m_die_stack(die_stack), m_valid(false) {} 2636 2637 void Push(const DWARFDIE &die) { 2638 m_valid = true; 2639 m_die_stack.Push(die); 2640 } 2641 2642 ~ScopedPopper() { 2643 if (m_valid) 2644 m_die_stack.Pop(); 2645 } 2646 2647 protected: 2648 DIEStack &m_die_stack; 2649 bool m_valid; 2650 }; 2651 2652 protected: 2653 typedef std::vector<DWARFDIE> Stack; 2654 Stack m_dies; 2655 }; 2656 #endif 2657 2658 Function *DWARFASTParserClang::ParseFunctionFromDWARF(const SymbolContext &sc, 2659 const DWARFDIE &die) { 2660 DWARFRangeList func_ranges; 2661 const char *name = NULL; 2662 const char *mangled = NULL; 2663 int decl_file = 0; 2664 int decl_line = 0; 2665 int decl_column = 0; 2666 int call_file = 0; 2667 int call_line = 0; 2668 int call_column = 0; 2669 DWARFExpression frame_base(die.GetCU()); 2670 2671 const dw_tag_t tag = die.Tag(); 2672 2673 if (tag != DW_TAG_subprogram) 2674 return NULL; 2675 2676 if (die.GetDIENamesAndRanges(name, mangled, func_ranges, decl_file, decl_line, 2677 decl_column, call_file, call_line, call_column, 2678 &frame_base)) { 2679 2680 // Union of all ranges in the function DIE (if the function is 2681 // discontiguous) 2682 AddressRange func_range; 2683 lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase(0); 2684 lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd(0); 2685 if (lowest_func_addr != LLDB_INVALID_ADDRESS && 2686 lowest_func_addr <= highest_func_addr) { 2687 ModuleSP module_sp(die.GetModule()); 2688 func_range.GetBaseAddress().ResolveAddressUsingFileSections( 2689 lowest_func_addr, module_sp->GetSectionList()); 2690 if (func_range.GetBaseAddress().IsValid()) 2691 func_range.SetByteSize(highest_func_addr - lowest_func_addr); 2692 } 2693 2694 if (func_range.GetBaseAddress().IsValid()) { 2695 Mangled func_name; 2696 if (mangled) 2697 func_name.SetValue(ConstString(mangled), true); 2698 else if (die.GetParent().Tag() == DW_TAG_compile_unit && 2699 Language::LanguageIsCPlusPlus(die.GetLanguage()) && name && 2700 strcmp(name, "main") != 0) { 2701 // If the mangled name is not present in the DWARF, generate the 2702 // demangled name 2703 // using the decl context. We skip if the function is "main" as its name 2704 // is 2705 // never mangled. 2706 bool is_static = false; 2707 bool is_variadic = false; 2708 bool has_template_params = false; 2709 unsigned type_quals = 0; 2710 std::vector<CompilerType> param_types; 2711 std::vector<clang::ParmVarDecl *> param_decls; 2712 DWARFDeclContext decl_ctx; 2713 StreamString sstr; 2714 2715 die.GetDWARFDeclContext(decl_ctx); 2716 sstr << decl_ctx.GetQualifiedName(); 2717 2718 clang::DeclContext *containing_decl_ctx = 2719 GetClangDeclContextContainingDIE(die, nullptr); 2720 ParseChildParameters(sc, containing_decl_ctx, die, true, is_static, 2721 is_variadic, has_template_params, param_types, 2722 param_decls, type_quals); 2723 sstr << "("; 2724 for (size_t i = 0; i < param_types.size(); i++) { 2725 if (i > 0) 2726 sstr << ", "; 2727 sstr << param_types[i].GetTypeName(); 2728 } 2729 if (is_variadic) 2730 sstr << ", ..."; 2731 sstr << ")"; 2732 if (type_quals & clang::Qualifiers::Const) 2733 sstr << " const"; 2734 2735 func_name.SetValue(ConstString(sstr.GetString()), false); 2736 } else 2737 func_name.SetValue(ConstString(name), false); 2738 2739 FunctionSP func_sp; 2740 std::unique_ptr<Declaration> decl_ap; 2741 if (decl_file != 0 || decl_line != 0 || decl_column != 0) 2742 decl_ap.reset(new Declaration( 2743 sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), 2744 decl_line, decl_column)); 2745 2746 SymbolFileDWARF *dwarf = die.GetDWARF(); 2747 // Supply the type _only_ if it has already been parsed 2748 Type *func_type = dwarf->GetDIEToType().lookup(die.GetDIE()); 2749 2750 assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED); 2751 2752 if (dwarf->FixupAddress(func_range.GetBaseAddress())) { 2753 const user_id_t func_user_id = die.GetID(); 2754 func_sp.reset(new Function(sc.comp_unit, 2755 func_user_id, // UserID is the DIE offset 2756 func_user_id, func_name, func_type, 2757 func_range)); // first address range 2758 2759 if (func_sp.get() != NULL) { 2760 if (frame_base.IsValid()) 2761 func_sp->GetFrameBaseExpression() = frame_base; 2762 sc.comp_unit->AddFunction(func_sp); 2763 return func_sp.get(); 2764 } 2765 } 2766 } 2767 } 2768 return NULL; 2769 } 2770 2771 bool DWARFASTParserClang::ParseChildMembers( 2772 const SymbolContext &sc, const DWARFDIE &parent_die, 2773 CompilerType &class_clang_type, const LanguageType class_language, 2774 std::vector<clang::CXXBaseSpecifier *> &base_classes, 2775 std::vector<int> &member_accessibilities, 2776 DWARFDIECollection &member_function_dies, 2777 DelayedPropertyList &delayed_properties, AccessType &default_accessibility, 2778 bool &is_a_class, ClangASTImporter::LayoutInfo &layout_info) { 2779 if (!parent_die) 2780 return 0; 2781 2782 // Get the parent byte size so we can verify any members will fit 2783 const uint64_t parent_byte_size = 2784 parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, UINT64_MAX); 2785 const uint64_t parent_bit_size = 2786 parent_byte_size == UINT64_MAX ? UINT64_MAX : parent_byte_size * 8; 2787 2788 uint32_t member_idx = 0; 2789 BitfieldInfo last_field_info; 2790 2791 ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule(); 2792 ClangASTContext *ast = 2793 llvm::dyn_cast_or_null<ClangASTContext>(class_clang_type.GetTypeSystem()); 2794 if (ast == nullptr) 2795 return 0; 2796 2797 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); 2798 die = die.GetSibling()) { 2799 dw_tag_t tag = die.Tag(); 2800 2801 switch (tag) { 2802 case DW_TAG_member: 2803 case DW_TAG_APPLE_property: { 2804 DWARFAttributes attributes; 2805 const size_t num_attributes = die.GetAttributes(attributes); 2806 if (num_attributes > 0) { 2807 Declaration decl; 2808 // DWARFExpression location; 2809 const char *name = NULL; 2810 const char *prop_name = NULL; 2811 const char *prop_getter_name = NULL; 2812 const char *prop_setter_name = NULL; 2813 uint32_t prop_attributes = 0; 2814 2815 bool is_artificial = false; 2816 DWARFFormValue encoding_form; 2817 AccessType accessibility = eAccessNone; 2818 uint32_t member_byte_offset = 2819 (parent_die.Tag() == DW_TAG_union_type) ? 0 : UINT32_MAX; 2820 size_t byte_size = 0; 2821 int64_t bit_offset = 0; 2822 uint64_t data_bit_offset = UINT64_MAX; 2823 size_t bit_size = 0; 2824 bool is_external = 2825 false; // On DW_TAG_members, this means the member is static 2826 uint32_t i; 2827 for (i = 0; i < num_attributes && !is_artificial; ++i) { 2828 const dw_attr_t attr = attributes.AttributeAtIndex(i); 2829 DWARFFormValue form_value; 2830 if (attributes.ExtractFormValueAtIndex(i, form_value)) { 2831 switch (attr) { 2832 case DW_AT_decl_file: 2833 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( 2834 form_value.Unsigned())); 2835 break; 2836 case DW_AT_decl_line: 2837 decl.SetLine(form_value.Unsigned()); 2838 break; 2839 case DW_AT_decl_column: 2840 decl.SetColumn(form_value.Unsigned()); 2841 break; 2842 case DW_AT_name: 2843 name = form_value.AsCString(); 2844 break; 2845 case DW_AT_type: 2846 encoding_form = form_value; 2847 break; 2848 case DW_AT_bit_offset: 2849 bit_offset = form_value.Signed(); 2850 break; 2851 case DW_AT_bit_size: 2852 bit_size = form_value.Unsigned(); 2853 break; 2854 case DW_AT_byte_size: 2855 byte_size = form_value.Unsigned(); 2856 break; 2857 case DW_AT_data_bit_offset: 2858 data_bit_offset = form_value.Unsigned(); 2859 break; 2860 case DW_AT_data_member_location: 2861 if (form_value.BlockData()) { 2862 Value initialValue(0); 2863 Value memberOffset(0); 2864 const DWARFDataExtractor &debug_info_data = 2865 die.GetDWARF()->get_debug_info_data(); 2866 uint32_t block_length = form_value.Unsigned(); 2867 uint32_t block_offset = 2868 form_value.BlockData() - debug_info_data.GetDataStart(); 2869 if (DWARFExpression::Evaluate( 2870 nullptr, // ExecutionContext * 2871 nullptr, // RegisterContext * 2872 module_sp, debug_info_data, die.GetCU(), block_offset, 2873 block_length, eRegisterKindDWARF, &initialValue, 2874 nullptr, memberOffset, nullptr)) { 2875 member_byte_offset = memberOffset.ResolveValue(NULL).UInt(); 2876 } 2877 } else { 2878 // With DWARF 3 and later, if the value is an integer constant, 2879 // this form value is the offset in bytes from the beginning 2880 // of the containing entity. 2881 member_byte_offset = form_value.Unsigned(); 2882 } 2883 break; 2884 2885 case DW_AT_accessibility: 2886 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); 2887 break; 2888 case DW_AT_artificial: 2889 is_artificial = form_value.Boolean(); 2890 break; 2891 case DW_AT_APPLE_property_name: 2892 prop_name = form_value.AsCString(); 2893 break; 2894 case DW_AT_APPLE_property_getter: 2895 prop_getter_name = form_value.AsCString(); 2896 break; 2897 case DW_AT_APPLE_property_setter: 2898 prop_setter_name = form_value.AsCString(); 2899 break; 2900 case DW_AT_APPLE_property_attribute: 2901 prop_attributes = form_value.Unsigned(); 2902 break; 2903 case DW_AT_external: 2904 is_external = form_value.Boolean(); 2905 break; 2906 2907 default: 2908 case DW_AT_declaration: 2909 case DW_AT_description: 2910 case DW_AT_mutable: 2911 case DW_AT_visibility: 2912 case DW_AT_sibling: 2913 break; 2914 } 2915 } 2916 } 2917 2918 if (prop_name) { 2919 ConstString fixed_getter; 2920 ConstString fixed_setter; 2921 2922 // Check if the property getter/setter were provided as full 2923 // names. We want basenames, so we extract them. 2924 2925 if (prop_getter_name && prop_getter_name[0] == '-') { 2926 ObjCLanguage::MethodName prop_getter_method(prop_getter_name, true); 2927 prop_getter_name = prop_getter_method.GetSelector().GetCString(); 2928 } 2929 2930 if (prop_setter_name && prop_setter_name[0] == '-') { 2931 ObjCLanguage::MethodName prop_setter_method(prop_setter_name, true); 2932 prop_setter_name = prop_setter_method.GetSelector().GetCString(); 2933 } 2934 2935 // If the names haven't been provided, they need to be 2936 // filled in. 2937 2938 if (!prop_getter_name) { 2939 prop_getter_name = prop_name; 2940 } 2941 if (!prop_setter_name && prop_name[0] && 2942 !(prop_attributes & DW_APPLE_PROPERTY_readonly)) { 2943 StreamString ss; 2944 2945 ss.Printf("set%c%s:", toupper(prop_name[0]), &prop_name[1]); 2946 2947 fixed_setter.SetString(ss.GetString()); 2948 prop_setter_name = fixed_setter.GetCString(); 2949 } 2950 } 2951 2952 // Clang has a DWARF generation bug where sometimes it 2953 // represents fields that are references with bad byte size 2954 // and bit size/offset information such as: 2955 // 2956 // DW_AT_byte_size( 0x00 ) 2957 // DW_AT_bit_size( 0x40 ) 2958 // DW_AT_bit_offset( 0xffffffffffffffc0 ) 2959 // 2960 // So check the bit offset to make sure it is sane, and if 2961 // the values are not sane, remove them. If we don't do this 2962 // then we will end up with a crash if we try to use this 2963 // type in an expression when clang becomes unhappy with its 2964 // recycled debug info. 2965 2966 if (byte_size == 0 && bit_offset < 0) { 2967 bit_size = 0; 2968 bit_offset = 0; 2969 } 2970 2971 // FIXME: Make Clang ignore Objective-C accessibility for expressions 2972 if (class_language == eLanguageTypeObjC || 2973 class_language == eLanguageTypeObjC_plus_plus) 2974 accessibility = eAccessNone; 2975 2976 if (member_idx == 0 && !is_artificial && name && 2977 (strstr(name, "_vptr$") == name)) { 2978 // Not all compilers will mark the vtable pointer 2979 // member as artificial (llvm-gcc). We can't have 2980 // the virtual members in our classes otherwise it 2981 // throws off all child offsets since we end up 2982 // having and extra pointer sized member in our 2983 // class layouts. 2984 is_artificial = true; 2985 } 2986 2987 // Handle static members 2988 if (is_external && member_byte_offset == UINT32_MAX) { 2989 Type *var_type = die.ResolveTypeUID(DIERef(encoding_form)); 2990 2991 if (var_type) { 2992 if (accessibility == eAccessNone) 2993 accessibility = eAccessPublic; 2994 ClangASTContext::AddVariableToRecordType( 2995 class_clang_type, name, var_type->GetLayoutCompilerType(), 2996 accessibility); 2997 } 2998 break; 2999 } 3000 3001 if (is_artificial == false) { 3002 Type *member_type = die.ResolveTypeUID(DIERef(encoding_form)); 3003 3004 clang::FieldDecl *field_decl = NULL; 3005 if (tag == DW_TAG_member) { 3006 if (member_type) { 3007 if (accessibility == eAccessNone) 3008 accessibility = default_accessibility; 3009 member_accessibilities.push_back(accessibility); 3010 3011 uint64_t field_bit_offset = 3012 (member_byte_offset == UINT32_MAX ? 0 3013 : (member_byte_offset * 8)); 3014 if (bit_size > 0) { 3015 3016 BitfieldInfo this_field_info; 3017 this_field_info.bit_offset = field_bit_offset; 3018 this_field_info.bit_size = bit_size; 3019 3020 ///////////////////////////////////////////////////////////// 3021 // How to locate a field given the DWARF debug information 3022 // 3023 // AT_byte_size indicates the size of the word in which the 3024 // bit offset must be interpreted. 3025 // 3026 // AT_data_member_location indicates the byte offset of the 3027 // word from the base address of the structure. 3028 // 3029 // AT_bit_offset indicates how many bits into the word 3030 // (according to the host endianness) the low-order bit of 3031 // the field starts. AT_bit_offset can be negative. 3032 // 3033 // AT_bit_size indicates the size of the field in bits. 3034 ///////////////////////////////////////////////////////////// 3035 3036 if (data_bit_offset != UINT64_MAX) { 3037 this_field_info.bit_offset = data_bit_offset; 3038 } else { 3039 if (byte_size == 0) 3040 byte_size = member_type->GetByteSize(); 3041 3042 ObjectFile *objfile = die.GetDWARF()->GetObjectFile(); 3043 if (objfile->GetByteOrder() == eByteOrderLittle) { 3044 this_field_info.bit_offset += byte_size * 8; 3045 this_field_info.bit_offset -= (bit_offset + bit_size); 3046 } else { 3047 this_field_info.bit_offset += bit_offset; 3048 } 3049 } 3050 3051 if ((this_field_info.bit_offset >= parent_bit_size) || 3052 !last_field_info.NextBitfieldOffsetIsValid( 3053 this_field_info.bit_offset)) { 3054 ObjectFile *objfile = die.GetDWARF()->GetObjectFile(); 3055 objfile->GetModule()->ReportWarning( 3056 "0x%8.8" PRIx64 ": %s bitfield named \"%s\" has invalid " 3057 "bit offset (0x%8.8" PRIx64 3058 ") member will be ignored. Please file a bug against the " 3059 "compiler and include the preprocessed output for %s\n", 3060 die.GetID(), DW_TAG_value_to_name(tag), name, 3061 this_field_info.bit_offset, 3062 sc.comp_unit ? sc.comp_unit->GetPath().c_str() 3063 : "the source file"); 3064 this_field_info.Clear(); 3065 continue; 3066 } 3067 3068 // Update the field bit offset we will report for layout 3069 field_bit_offset = this_field_info.bit_offset; 3070 3071 // If the member to be emitted did not start on a character 3072 // boundary and there is 3073 // empty space between the last field and this one, then we need 3074 // to emit an 3075 // anonymous member filling up the space up to its start. There 3076 // are three cases 3077 // here: 3078 // 3079 // 1 If the previous member ended on a character boundary, then 3080 // we can emit an 3081 // anonymous member starting at the most recent character 3082 // boundary. 3083 // 3084 // 2 If the previous member did not end on a character boundary 3085 // and the distance 3086 // from the end of the previous member to the current member 3087 // is less than a 3088 // word width, then we can emit an anonymous member starting 3089 // right after the 3090 // previous member and right before this member. 3091 // 3092 // 3 If the previous member did not end on a character boundary 3093 // and the distance 3094 // from the end of the previous member to the current member 3095 // is greater than 3096 // or equal a word width, then we act as in Case 1. 3097 3098 const uint64_t character_width = 8; 3099 const uint64_t word_width = 32; 3100 3101 // Objective-C has invalid DW_AT_bit_offset values in older 3102 // versions 3103 // of clang, so we have to be careful and only insert unnamed 3104 // bitfields 3105 // if we have a new enough clang. 3106 bool detect_unnamed_bitfields = true; 3107 3108 if (class_language == eLanguageTypeObjC || 3109 class_language == eLanguageTypeObjC_plus_plus) 3110 detect_unnamed_bitfields = 3111 die.GetCU()->Supports_unnamed_objc_bitfields(); 3112 3113 if (detect_unnamed_bitfields) { 3114 BitfieldInfo anon_field_info; 3115 3116 if ((this_field_info.bit_offset % character_width) != 3117 0) // not char aligned 3118 { 3119 uint64_t last_field_end = 0; 3120 3121 if (last_field_info.IsValid()) 3122 last_field_end = 3123 last_field_info.bit_offset + last_field_info.bit_size; 3124 3125 if (this_field_info.bit_offset != last_field_end) { 3126 if (((last_field_end % character_width) == 0) || // case 1 3127 (this_field_info.bit_offset - last_field_end >= 3128 word_width)) // case 3 3129 { 3130 anon_field_info.bit_size = 3131 this_field_info.bit_offset % character_width; 3132 anon_field_info.bit_offset = 3133 this_field_info.bit_offset - 3134 anon_field_info.bit_size; 3135 } else // case 2 3136 { 3137 anon_field_info.bit_size = 3138 this_field_info.bit_offset - last_field_end; 3139 anon_field_info.bit_offset = last_field_end; 3140 } 3141 } 3142 } 3143 3144 if (anon_field_info.IsValid()) { 3145 clang::FieldDecl *unnamed_bitfield_decl = 3146 ClangASTContext::AddFieldToRecordType( 3147 class_clang_type, NULL, 3148 m_ast.GetBuiltinTypeForEncodingAndBitSize( 3149 eEncodingSint, word_width), 3150 accessibility, anon_field_info.bit_size); 3151 3152 layout_info.field_offsets.insert(std::make_pair( 3153 unnamed_bitfield_decl, anon_field_info.bit_offset)); 3154 } 3155 } 3156 last_field_info = this_field_info; 3157 } else { 3158 last_field_info.Clear(); 3159 } 3160 3161 CompilerType member_clang_type = 3162 member_type->GetLayoutCompilerType(); 3163 if (!member_clang_type.IsCompleteType()) 3164 member_clang_type.GetCompleteType(); 3165 3166 { 3167 // Older versions of clang emit array[0] and array[1] in the 3168 // same way (<rdar://problem/12566646>). 3169 // If the current field is at the end of the structure, then 3170 // there is definitely no room for extra 3171 // elements and we override the type to array[0]. 3172 3173 CompilerType member_array_element_type; 3174 uint64_t member_array_size; 3175 bool member_array_is_incomplete; 3176 3177 if (member_clang_type.IsArrayType( 3178 &member_array_element_type, &member_array_size, 3179 &member_array_is_incomplete) && 3180 !member_array_is_incomplete) { 3181 uint64_t parent_byte_size = 3182 parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, 3183 UINT64_MAX); 3184 3185 if (member_byte_offset >= parent_byte_size) { 3186 if (member_array_size != 1 && 3187 (member_array_size != 0 || 3188 member_byte_offset > parent_byte_size)) { 3189 module_sp->ReportError( 3190 "0x%8.8" PRIx64 3191 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 3192 " which extends beyond the bounds of 0x%8.8" PRIx64, 3193 die.GetID(), name, encoding_form.Reference(), 3194 parent_die.GetID()); 3195 } 3196 3197 member_clang_type = m_ast.CreateArrayType( 3198 member_array_element_type, 0, false); 3199 } 3200 } 3201 } 3202 3203 if (ClangASTContext::IsCXXClassType(member_clang_type) && 3204 member_clang_type.GetCompleteType() == false) { 3205 if (die.GetCU()->GetProducer() == eProducerClang) 3206 module_sp->ReportError( 3207 "DWARF DIE at 0x%8.8x (class %s) has a member variable " 3208 "0x%8.8x (%s) whose type is a forward declaration, not a " 3209 "complete definition.\nTry compiling the source file " 3210 "with -fstandalone-debug", 3211 parent_die.GetOffset(), parent_die.GetName(), 3212 die.GetOffset(), name); 3213 else 3214 module_sp->ReportError( 3215 "DWARF DIE at 0x%8.8x (class %s) has a member variable " 3216 "0x%8.8x (%s) whose type is a forward declaration, not a " 3217 "complete definition.\nPlease file a bug against the " 3218 "compiler and include the preprocessed output for %s", 3219 parent_die.GetOffset(), parent_die.GetName(), 3220 die.GetOffset(), name, 3221 sc.comp_unit ? sc.comp_unit->GetPath().c_str() 3222 : "the source file"); 3223 // We have no choice other than to pretend that the member class 3224 // is complete. If we don't do this, clang will crash when 3225 // trying 3226 // to layout the class. Since we provide layout assistance, all 3227 // ivars in this class and other classes will be fine, this is 3228 // the best we can do short of crashing. 3229 if (ClangASTContext::StartTagDeclarationDefinition( 3230 member_clang_type)) { 3231 ClangASTContext::CompleteTagDeclarationDefinition( 3232 member_clang_type); 3233 } else { 3234 module_sp->ReportError( 3235 "DWARF DIE at 0x%8.8x (class %s) has a member variable " 3236 "0x%8.8x (%s) whose type claims to be a C++ class but we " 3237 "were not able to start its definition.\nPlease file a " 3238 "bug and attach the file at the start of this error " 3239 "message", 3240 parent_die.GetOffset(), parent_die.GetName(), 3241 die.GetOffset(), name); 3242 } 3243 } 3244 3245 field_decl = ClangASTContext::AddFieldToRecordType( 3246 class_clang_type, name, member_clang_type, accessibility, 3247 bit_size); 3248 3249 m_ast.SetMetadataAsUserID(field_decl, die.GetID()); 3250 3251 layout_info.field_offsets.insert( 3252 std::make_pair(field_decl, field_bit_offset)); 3253 } else { 3254 if (name) 3255 module_sp->ReportError( 3256 "0x%8.8" PRIx64 3257 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 3258 " which was unable to be parsed", 3259 die.GetID(), name, encoding_form.Reference()); 3260 else 3261 module_sp->ReportError( 3262 "0x%8.8" PRIx64 3263 ": DW_TAG_member refers to type 0x%8.8" PRIx64 3264 " which was unable to be parsed", 3265 die.GetID(), encoding_form.Reference()); 3266 } 3267 } 3268 3269 if (prop_name != NULL && member_type) { 3270 clang::ObjCIvarDecl *ivar_decl = NULL; 3271 3272 if (field_decl) { 3273 ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl); 3274 assert(ivar_decl != NULL); 3275 } 3276 3277 ClangASTMetadata metadata; 3278 metadata.SetUserID(die.GetID()); 3279 delayed_properties.push_back(DelayedAddObjCClassProperty( 3280 class_clang_type, prop_name, 3281 member_type->GetLayoutCompilerType(), ivar_decl, 3282 prop_setter_name, prop_getter_name, prop_attributes, 3283 &metadata)); 3284 3285 if (ivar_decl) 3286 m_ast.SetMetadataAsUserID(ivar_decl, die.GetID()); 3287 } 3288 } 3289 } 3290 ++member_idx; 3291 } break; 3292 3293 case DW_TAG_subprogram: 3294 // Let the type parsing code handle this one for us. 3295 member_function_dies.Append(die); 3296 break; 3297 3298 case DW_TAG_inheritance: { 3299 is_a_class = true; 3300 if (default_accessibility == eAccessNone) 3301 default_accessibility = eAccessPrivate; 3302 // TODO: implement DW_TAG_inheritance type parsing 3303 DWARFAttributes attributes; 3304 const size_t num_attributes = die.GetAttributes(attributes); 3305 if (num_attributes > 0) { 3306 Declaration decl; 3307 DWARFExpression location(die.GetCU()); 3308 DWARFFormValue encoding_form; 3309 AccessType accessibility = default_accessibility; 3310 bool is_virtual = false; 3311 bool is_base_of_class = true; 3312 off_t member_byte_offset = 0; 3313 uint32_t i; 3314 for (i = 0; i < num_attributes; ++i) { 3315 const dw_attr_t attr = attributes.AttributeAtIndex(i); 3316 DWARFFormValue form_value; 3317 if (attributes.ExtractFormValueAtIndex(i, form_value)) { 3318 switch (attr) { 3319 case DW_AT_decl_file: 3320 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( 3321 form_value.Unsigned())); 3322 break; 3323 case DW_AT_decl_line: 3324 decl.SetLine(form_value.Unsigned()); 3325 break; 3326 case DW_AT_decl_column: 3327 decl.SetColumn(form_value.Unsigned()); 3328 break; 3329 case DW_AT_type: 3330 encoding_form = form_value; 3331 break; 3332 case DW_AT_data_member_location: 3333 if (form_value.BlockData()) { 3334 Value initialValue(0); 3335 Value memberOffset(0); 3336 const DWARFDataExtractor &debug_info_data = 3337 die.GetDWARF()->get_debug_info_data(); 3338 uint32_t block_length = form_value.Unsigned(); 3339 uint32_t block_offset = 3340 form_value.BlockData() - debug_info_data.GetDataStart(); 3341 if (DWARFExpression::Evaluate(nullptr, nullptr, module_sp, 3342 debug_info_data, die.GetCU(), 3343 block_offset, block_length, 3344 eRegisterKindDWARF, &initialValue, 3345 nullptr, memberOffset, nullptr)) { 3346 member_byte_offset = memberOffset.ResolveValue(NULL).UInt(); 3347 } 3348 } else { 3349 // With DWARF 3 and later, if the value is an integer constant, 3350 // this form value is the offset in bytes from the beginning 3351 // of the containing entity. 3352 member_byte_offset = form_value.Unsigned(); 3353 } 3354 break; 3355 3356 case DW_AT_accessibility: 3357 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); 3358 break; 3359 3360 case DW_AT_virtuality: 3361 is_virtual = form_value.Boolean(); 3362 break; 3363 3364 case DW_AT_sibling: 3365 break; 3366 3367 default: 3368 break; 3369 } 3370 } 3371 } 3372 3373 Type *base_class_type = die.ResolveTypeUID(DIERef(encoding_form)); 3374 if (base_class_type == NULL) { 3375 module_sp->ReportError("0x%8.8x: DW_TAG_inheritance failed to " 3376 "resolve the base class at 0x%8.8" PRIx64 3377 " from enclosing type 0x%8.8x. \nPlease file " 3378 "a bug and attach the file at the start of " 3379 "this error message", 3380 die.GetOffset(), encoding_form.Reference(), 3381 parent_die.GetOffset()); 3382 break; 3383 } 3384 3385 CompilerType base_class_clang_type = 3386 base_class_type->GetFullCompilerType(); 3387 assert(base_class_clang_type); 3388 if (class_language == eLanguageTypeObjC) { 3389 ast->SetObjCSuperClass(class_clang_type, base_class_clang_type); 3390 } else { 3391 base_classes.push_back(ast->CreateBaseClassSpecifier( 3392 base_class_clang_type.GetOpaqueQualType(), accessibility, 3393 is_virtual, is_base_of_class)); 3394 3395 if (is_virtual) { 3396 // Do not specify any offset for virtual inheritance. The DWARF 3397 // produced by clang doesn't 3398 // give us a constant offset, but gives us a DWARF expressions that 3399 // requires an actual object 3400 // in memory. the DW_AT_data_member_location for a virtual base 3401 // class looks like: 3402 // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref, 3403 // DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref, 3404 // DW_OP_plus ) 3405 // Given this, there is really no valid response we can give to 3406 // clang for virtual base 3407 // class offsets, and this should eventually be removed from 3408 // LayoutRecordType() in the external 3409 // AST source in clang. 3410 } else { 3411 layout_info.base_offsets.insert(std::make_pair( 3412 ast->GetAsCXXRecordDecl( 3413 base_class_clang_type.GetOpaqueQualType()), 3414 clang::CharUnits::fromQuantity(member_byte_offset))); 3415 } 3416 } 3417 } 3418 } break; 3419 3420 default: 3421 break; 3422 } 3423 } 3424 3425 return true; 3426 } 3427 3428 size_t DWARFASTParserClang::ParseChildParameters( 3429 const SymbolContext &sc, clang::DeclContext *containing_decl_ctx, 3430 const DWARFDIE &parent_die, bool skip_artificial, bool &is_static, 3431 bool &is_variadic, bool &has_template_params, 3432 std::vector<CompilerType> &function_param_types, 3433 std::vector<clang::ParmVarDecl *> &function_param_decls, 3434 unsigned &type_quals) { 3435 if (!parent_die) 3436 return 0; 3437 3438 size_t arg_idx = 0; 3439 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); 3440 die = die.GetSibling()) { 3441 const dw_tag_t tag = die.Tag(); 3442 switch (tag) { 3443 case DW_TAG_formal_parameter: { 3444 DWARFAttributes attributes; 3445 const size_t num_attributes = die.GetAttributes(attributes); 3446 if (num_attributes > 0) { 3447 const char *name = NULL; 3448 Declaration decl; 3449 DWARFFormValue param_type_die_form; 3450 bool is_artificial = false; 3451 // one of None, Auto, Register, Extern, Static, PrivateExtern 3452 3453 clang::StorageClass storage = clang::SC_None; 3454 uint32_t i; 3455 for (i = 0; i < num_attributes; ++i) { 3456 const dw_attr_t attr = attributes.AttributeAtIndex(i); 3457 DWARFFormValue form_value; 3458 if (attributes.ExtractFormValueAtIndex(i, form_value)) { 3459 switch (attr) { 3460 case DW_AT_decl_file: 3461 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( 3462 form_value.Unsigned())); 3463 break; 3464 case DW_AT_decl_line: 3465 decl.SetLine(form_value.Unsigned()); 3466 break; 3467 case DW_AT_decl_column: 3468 decl.SetColumn(form_value.Unsigned()); 3469 break; 3470 case DW_AT_name: 3471 name = form_value.AsCString(); 3472 break; 3473 case DW_AT_type: 3474 param_type_die_form = form_value; 3475 break; 3476 case DW_AT_artificial: 3477 is_artificial = form_value.Boolean(); 3478 break; 3479 case DW_AT_location: 3480 // if (form_value.BlockData()) 3481 // { 3482 // const DWARFDataExtractor& 3483 // debug_info_data = debug_info(); 3484 // uint32_t block_length = 3485 // form_value.Unsigned(); 3486 // DWARFDataExtractor 3487 // location(debug_info_data, 3488 // form_value.BlockData() - 3489 // debug_info_data.GetDataStart(), 3490 // block_length); 3491 // } 3492 // else 3493 // { 3494 // } 3495 // break; 3496 case DW_AT_const_value: 3497 case DW_AT_default_value: 3498 case DW_AT_description: 3499 case DW_AT_endianity: 3500 case DW_AT_is_optional: 3501 case DW_AT_segment: 3502 case DW_AT_variable_parameter: 3503 default: 3504 case DW_AT_abstract_origin: 3505 case DW_AT_sibling: 3506 break; 3507 } 3508 } 3509 } 3510 3511 bool skip = false; 3512 if (skip_artificial) { 3513 if (is_artificial) { 3514 // In order to determine if a C++ member function is 3515 // "const" we have to look at the const-ness of "this"... 3516 // Ugly, but that 3517 if (arg_idx == 0) { 3518 if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind())) { 3519 // Often times compilers omit the "this" name for the 3520 // specification DIEs, so we can't rely upon the name 3521 // being in the formal parameter DIE... 3522 if (name == NULL || ::strcmp(name, "this") == 0) { 3523 Type *this_type = 3524 die.ResolveTypeUID(DIERef(param_type_die_form)); 3525 if (this_type) { 3526 uint32_t encoding_mask = this_type->GetEncodingMask(); 3527 if (encoding_mask & Type::eEncodingIsPointerUID) { 3528 is_static = false; 3529 3530 if (encoding_mask & (1u << Type::eEncodingIsConstUID)) 3531 type_quals |= clang::Qualifiers::Const; 3532 if (encoding_mask & (1u << Type::eEncodingIsVolatileUID)) 3533 type_quals |= clang::Qualifiers::Volatile; 3534 } 3535 } 3536 } 3537 } 3538 } 3539 skip = true; 3540 } else { 3541 3542 // HACK: Objective C formal parameters "self" and "_cmd" 3543 // are not marked as artificial in the DWARF... 3544 CompileUnit *comp_unit = die.GetLLDBCompileUnit(); 3545 if (comp_unit) { 3546 switch (comp_unit->GetLanguage()) { 3547 case eLanguageTypeObjC: 3548 case eLanguageTypeObjC_plus_plus: 3549 if (name && name[0] && 3550 (strcmp(name, "self") == 0 || strcmp(name, "_cmd") == 0)) 3551 skip = true; 3552 break; 3553 default: 3554 break; 3555 } 3556 } 3557 } 3558 } 3559 3560 if (!skip) { 3561 Type *type = die.ResolveTypeUID(DIERef(param_type_die_form)); 3562 if (type) { 3563 function_param_types.push_back(type->GetForwardCompilerType()); 3564 3565 clang::ParmVarDecl *param_var_decl = 3566 m_ast.CreateParameterDeclaration( 3567 name, type->GetForwardCompilerType(), storage); 3568 assert(param_var_decl); 3569 function_param_decls.push_back(param_var_decl); 3570 3571 m_ast.SetMetadataAsUserID(param_var_decl, die.GetID()); 3572 } 3573 } 3574 } 3575 arg_idx++; 3576 } break; 3577 3578 case DW_TAG_unspecified_parameters: 3579 is_variadic = true; 3580 break; 3581 3582 case DW_TAG_template_type_parameter: 3583 case DW_TAG_template_value_parameter: 3584 case DW_TAG_GNU_template_parameter_pack: 3585 // The one caller of this was never using the template_param_infos, 3586 // and the local variable was taking up a large amount of stack space 3587 // in SymbolFileDWARF::ParseType() so this was removed. If we ever need 3588 // the template params back, we can add them back. 3589 // ParseTemplateDIE (dwarf_cu, die, template_param_infos); 3590 has_template_params = true; 3591 break; 3592 3593 default: 3594 break; 3595 } 3596 } 3597 return arg_idx; 3598 } 3599 3600 void DWARFASTParserClang::ParseChildArrayInfo( 3601 const SymbolContext &sc, const DWARFDIE &parent_die, int64_t &first_index, 3602 std::vector<uint64_t> &element_orders, uint32_t &byte_stride, 3603 uint32_t &bit_stride) { 3604 if (!parent_die) 3605 return; 3606 3607 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); 3608 die = die.GetSibling()) { 3609 const dw_tag_t tag = die.Tag(); 3610 switch (tag) { 3611 case DW_TAG_subrange_type: { 3612 DWARFAttributes attributes; 3613 const size_t num_child_attributes = die.GetAttributes(attributes); 3614 if (num_child_attributes > 0) { 3615 uint64_t num_elements = 0; 3616 uint64_t lower_bound = 0; 3617 uint64_t upper_bound = 0; 3618 bool upper_bound_valid = false; 3619 uint32_t i; 3620 for (i = 0; i < num_child_attributes; ++i) { 3621 const dw_attr_t attr = attributes.AttributeAtIndex(i); 3622 DWARFFormValue form_value; 3623 if (attributes.ExtractFormValueAtIndex(i, form_value)) { 3624 switch (attr) { 3625 case DW_AT_name: 3626 break; 3627 3628 case DW_AT_count: 3629 num_elements = form_value.Unsigned(); 3630 break; 3631 3632 case DW_AT_bit_stride: 3633 bit_stride = form_value.Unsigned(); 3634 break; 3635 3636 case DW_AT_byte_stride: 3637 byte_stride = form_value.Unsigned(); 3638 break; 3639 3640 case DW_AT_lower_bound: 3641 lower_bound = form_value.Unsigned(); 3642 break; 3643 3644 case DW_AT_upper_bound: 3645 upper_bound_valid = true; 3646 upper_bound = form_value.Unsigned(); 3647 break; 3648 3649 default: 3650 case DW_AT_abstract_origin: 3651 case DW_AT_accessibility: 3652 case DW_AT_allocated: 3653 case DW_AT_associated: 3654 case DW_AT_data_location: 3655 case DW_AT_declaration: 3656 case DW_AT_description: 3657 case DW_AT_sibling: 3658 case DW_AT_threads_scaled: 3659 case DW_AT_type: 3660 case DW_AT_visibility: 3661 break; 3662 } 3663 } 3664 } 3665 3666 if (num_elements == 0) { 3667 if (upper_bound_valid && upper_bound >= lower_bound) 3668 num_elements = upper_bound - lower_bound + 1; 3669 } 3670 3671 element_orders.push_back(num_elements); 3672 } 3673 } break; 3674 } 3675 } 3676 } 3677 3678 Type *DWARFASTParserClang::GetTypeForDIE(const DWARFDIE &die) { 3679 if (die) { 3680 SymbolFileDWARF *dwarf = die.GetDWARF(); 3681 DWARFAttributes attributes; 3682 const size_t num_attributes = die.GetAttributes(attributes); 3683 if (num_attributes > 0) { 3684 DWARFFormValue type_die_form; 3685 for (size_t i = 0; i < num_attributes; ++i) { 3686 dw_attr_t attr = attributes.AttributeAtIndex(i); 3687 DWARFFormValue form_value; 3688 3689 if (attr == DW_AT_type && 3690 attributes.ExtractFormValueAtIndex(i, form_value)) 3691 return dwarf->ResolveTypeUID(dwarf->GetDIE(DIERef(form_value)), true); 3692 } 3693 } 3694 } 3695 3696 return nullptr; 3697 } 3698 3699 clang::Decl *DWARFASTParserClang::GetClangDeclForDIE(const DWARFDIE &die) { 3700 if (!die) 3701 return nullptr; 3702 3703 switch (die.Tag()) { 3704 case DW_TAG_variable: 3705 case DW_TAG_constant: 3706 case DW_TAG_formal_parameter: 3707 case DW_TAG_imported_declaration: 3708 case DW_TAG_imported_module: 3709 break; 3710 default: 3711 return nullptr; 3712 } 3713 3714 DIEToDeclMap::iterator cache_pos = m_die_to_decl.find(die.GetDIE()); 3715 if (cache_pos != m_die_to_decl.end()) 3716 return cache_pos->second; 3717 3718 if (DWARFDIE spec_die = die.GetReferencedDIE(DW_AT_specification)) { 3719 clang::Decl *decl = GetClangDeclForDIE(spec_die); 3720 m_die_to_decl[die.GetDIE()] = decl; 3721 m_decl_to_die[decl].insert(die.GetDIE()); 3722 return decl; 3723 } 3724 3725 if (DWARFDIE abstract_origin_die = 3726 die.GetReferencedDIE(DW_AT_abstract_origin)) { 3727 clang::Decl *decl = GetClangDeclForDIE(abstract_origin_die); 3728 m_die_to_decl[die.GetDIE()] = decl; 3729 m_decl_to_die[decl].insert(die.GetDIE()); 3730 return decl; 3731 } 3732 3733 clang::Decl *decl = nullptr; 3734 switch (die.Tag()) { 3735 case DW_TAG_variable: 3736 case DW_TAG_constant: 3737 case DW_TAG_formal_parameter: { 3738 SymbolFileDWARF *dwarf = die.GetDWARF(); 3739 Type *type = GetTypeForDIE(die); 3740 if (dwarf && type) { 3741 const char *name = die.GetName(); 3742 clang::DeclContext *decl_context = 3743 ClangASTContext::DeclContextGetAsDeclContext( 3744 dwarf->GetDeclContextContainingUID(die.GetID())); 3745 decl = m_ast.CreateVariableDeclaration( 3746 decl_context, name, 3747 ClangUtil::GetQualType(type->GetForwardCompilerType())); 3748 } 3749 break; 3750 } 3751 case DW_TAG_imported_declaration: { 3752 SymbolFileDWARF *dwarf = die.GetDWARF(); 3753 DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import); 3754 if (imported_uid) { 3755 CompilerDecl imported_decl = imported_uid.GetDecl(); 3756 if (imported_decl) { 3757 clang::DeclContext *decl_context = 3758 ClangASTContext::DeclContextGetAsDeclContext( 3759 dwarf->GetDeclContextContainingUID(die.GetID())); 3760 if (clang::NamedDecl *clang_imported_decl = 3761 llvm::dyn_cast<clang::NamedDecl>( 3762 (clang::Decl *)imported_decl.GetOpaqueDecl())) 3763 decl = 3764 m_ast.CreateUsingDeclaration(decl_context, clang_imported_decl); 3765 } 3766 } 3767 break; 3768 } 3769 case DW_TAG_imported_module: { 3770 SymbolFileDWARF *dwarf = die.GetDWARF(); 3771 DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import); 3772 3773 if (imported_uid) { 3774 CompilerDeclContext imported_decl_ctx = imported_uid.GetDeclContext(); 3775 if (imported_decl_ctx) { 3776 clang::DeclContext *decl_context = 3777 ClangASTContext::DeclContextGetAsDeclContext( 3778 dwarf->GetDeclContextContainingUID(die.GetID())); 3779 if (clang::NamespaceDecl *ns_decl = 3780 ClangASTContext::DeclContextGetAsNamespaceDecl( 3781 imported_decl_ctx)) 3782 decl = m_ast.CreateUsingDirectiveDeclaration(decl_context, ns_decl); 3783 } 3784 } 3785 break; 3786 } 3787 default: 3788 break; 3789 } 3790 3791 m_die_to_decl[die.GetDIE()] = decl; 3792 m_decl_to_die[decl].insert(die.GetDIE()); 3793 3794 return decl; 3795 } 3796 3797 clang::DeclContext * 3798 DWARFASTParserClang::GetClangDeclContextForDIE(const DWARFDIE &die) { 3799 if (die) { 3800 clang::DeclContext *decl_ctx = GetCachedClangDeclContextForDIE(die); 3801 if (decl_ctx) 3802 return decl_ctx; 3803 3804 bool try_parsing_type = true; 3805 switch (die.Tag()) { 3806 case DW_TAG_compile_unit: 3807 decl_ctx = m_ast.GetTranslationUnitDecl(); 3808 try_parsing_type = false; 3809 break; 3810 3811 case DW_TAG_namespace: 3812 decl_ctx = ResolveNamespaceDIE(die); 3813 try_parsing_type = false; 3814 break; 3815 3816 case DW_TAG_lexical_block: 3817 decl_ctx = GetDeclContextForBlock(die); 3818 try_parsing_type = false; 3819 break; 3820 3821 default: 3822 break; 3823 } 3824 3825 if (decl_ctx == nullptr && try_parsing_type) { 3826 Type *type = die.GetDWARF()->ResolveType(die); 3827 if (type) 3828 decl_ctx = GetCachedClangDeclContextForDIE(die); 3829 } 3830 3831 if (decl_ctx) { 3832 LinkDeclContextToDIE(decl_ctx, die); 3833 return decl_ctx; 3834 } 3835 } 3836 return nullptr; 3837 } 3838 3839 static bool IsSubroutine(const DWARFDIE &die) { 3840 switch (die.Tag()) { 3841 case DW_TAG_subprogram: 3842 case DW_TAG_inlined_subroutine: 3843 return true; 3844 default: 3845 return false; 3846 } 3847 } 3848 3849 static DWARFDIE GetContainingFunctionWithAbstractOrigin(const DWARFDIE &die) { 3850 for (DWARFDIE candidate = die; candidate; candidate = candidate.GetParent()) { 3851 if (IsSubroutine(candidate)) { 3852 if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) { 3853 return candidate; 3854 } else { 3855 return DWARFDIE(); 3856 } 3857 } 3858 } 3859 assert(0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on " 3860 "something not in a function"); 3861 return DWARFDIE(); 3862 } 3863 3864 static DWARFDIE FindAnyChildWithAbstractOrigin(const DWARFDIE &context) { 3865 for (DWARFDIE candidate = context.GetFirstChild(); candidate.IsValid(); 3866 candidate = candidate.GetSibling()) { 3867 if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) { 3868 return candidate; 3869 } 3870 } 3871 return DWARFDIE(); 3872 } 3873 3874 static DWARFDIE FindFirstChildWithAbstractOrigin(const DWARFDIE &block, 3875 const DWARFDIE &function) { 3876 assert(IsSubroutine(function)); 3877 for (DWARFDIE context = block; context != function.GetParent(); 3878 context = context.GetParent()) { 3879 assert(!IsSubroutine(context) || context == function); 3880 if (DWARFDIE child = FindAnyChildWithAbstractOrigin(context)) { 3881 return child; 3882 } 3883 } 3884 return DWARFDIE(); 3885 } 3886 3887 clang::DeclContext * 3888 DWARFASTParserClang::GetDeclContextForBlock(const DWARFDIE &die) { 3889 assert(die.Tag() == DW_TAG_lexical_block); 3890 DWARFDIE containing_function_with_abstract_origin = 3891 GetContainingFunctionWithAbstractOrigin(die); 3892 if (!containing_function_with_abstract_origin) { 3893 return (clang::DeclContext *)ResolveBlockDIE(die); 3894 } 3895 DWARFDIE child = FindFirstChildWithAbstractOrigin( 3896 die, containing_function_with_abstract_origin); 3897 CompilerDeclContext decl_context = 3898 GetDeclContextContainingUIDFromDWARF(child); 3899 return (clang::DeclContext *)decl_context.GetOpaqueDeclContext(); 3900 } 3901 3902 clang::BlockDecl *DWARFASTParserClang::ResolveBlockDIE(const DWARFDIE &die) { 3903 if (die && die.Tag() == DW_TAG_lexical_block) { 3904 clang::BlockDecl *decl = 3905 llvm::cast_or_null<clang::BlockDecl>(m_die_to_decl_ctx[die.GetDIE()]); 3906 3907 if (!decl) { 3908 DWARFDIE decl_context_die; 3909 clang::DeclContext *decl_context = 3910 GetClangDeclContextContainingDIE(die, &decl_context_die); 3911 decl = m_ast.CreateBlockDeclaration(decl_context); 3912 3913 if (decl) 3914 LinkDeclContextToDIE((clang::DeclContext *)decl, die); 3915 } 3916 3917 return decl; 3918 } 3919 return nullptr; 3920 } 3921 3922 clang::NamespaceDecl * 3923 DWARFASTParserClang::ResolveNamespaceDIE(const DWARFDIE &die) { 3924 if (die && die.Tag() == DW_TAG_namespace) { 3925 // See if we already parsed this namespace DIE and associated it with a 3926 // uniqued namespace declaration 3927 clang::NamespaceDecl *namespace_decl = 3928 static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die.GetDIE()]); 3929 if (namespace_decl) 3930 return namespace_decl; 3931 else { 3932 const char *namespace_name = die.GetName(); 3933 clang::DeclContext *containing_decl_ctx = 3934 GetClangDeclContextContainingDIE(die, nullptr); 3935 namespace_decl = m_ast.GetUniqueNamespaceDeclaration(namespace_name, 3936 containing_decl_ctx); 3937 Log *log = 3938 nullptr; // (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 3939 if (log) { 3940 SymbolFileDWARF *dwarf = die.GetDWARF(); 3941 if (namespace_name) { 3942 dwarf->GetObjectFile()->GetModule()->LogMessage( 3943 log, "ASTContext => %p: 0x%8.8" PRIx64 3944 ": DW_TAG_namespace with DW_AT_name(\"%s\") => " 3945 "clang::NamespaceDecl *%p (original = %p)", 3946 static_cast<void *>(m_ast.getASTContext()), die.GetID(), 3947 namespace_name, static_cast<void *>(namespace_decl), 3948 static_cast<void *>(namespace_decl->getOriginalNamespace())); 3949 } else { 3950 dwarf->GetObjectFile()->GetModule()->LogMessage( 3951 log, "ASTContext => %p: 0x%8.8" PRIx64 3952 ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p " 3953 "(original = %p)", 3954 static_cast<void *>(m_ast.getASTContext()), die.GetID(), 3955 static_cast<void *>(namespace_decl), 3956 static_cast<void *>(namespace_decl->getOriginalNamespace())); 3957 } 3958 } 3959 3960 if (namespace_decl) 3961 LinkDeclContextToDIE((clang::DeclContext *)namespace_decl, die); 3962 return namespace_decl; 3963 } 3964 } 3965 return nullptr; 3966 } 3967 3968 clang::DeclContext *DWARFASTParserClang::GetClangDeclContextContainingDIE( 3969 const DWARFDIE &die, DWARFDIE *decl_ctx_die_copy) { 3970 SymbolFileDWARF *dwarf = die.GetDWARF(); 3971 3972 DWARFDIE decl_ctx_die = dwarf->GetDeclContextDIEContainingDIE(die); 3973 3974 if (decl_ctx_die_copy) 3975 *decl_ctx_die_copy = decl_ctx_die; 3976 3977 if (decl_ctx_die) { 3978 clang::DeclContext *clang_decl_ctx = 3979 GetClangDeclContextForDIE(decl_ctx_die); 3980 if (clang_decl_ctx) 3981 return clang_decl_ctx; 3982 } 3983 return m_ast.GetTranslationUnitDecl(); 3984 } 3985 3986 clang::DeclContext * 3987 DWARFASTParserClang::GetCachedClangDeclContextForDIE(const DWARFDIE &die) { 3988 if (die) { 3989 DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find(die.GetDIE()); 3990 if (pos != m_die_to_decl_ctx.end()) 3991 return pos->second; 3992 } 3993 return nullptr; 3994 } 3995 3996 void DWARFASTParserClang::LinkDeclContextToDIE(clang::DeclContext *decl_ctx, 3997 const DWARFDIE &die) { 3998 m_die_to_decl_ctx[die.GetDIE()] = decl_ctx; 3999 // There can be many DIEs for a single decl context 4000 // m_decl_ctx_to_die[decl_ctx].insert(die.GetDIE()); 4001 m_decl_ctx_to_die.insert(std::make_pair(decl_ctx, die)); 4002 } 4003 4004 bool DWARFASTParserClang::CopyUniqueClassMethodTypes( 4005 const DWARFDIE &src_class_die, const DWARFDIE &dst_class_die, 4006 lldb_private::Type *class_type, DWARFDIECollection &failures) { 4007 if (!class_type || !src_class_die || !dst_class_die) 4008 return false; 4009 if (src_class_die.Tag() != dst_class_die.Tag()) 4010 return false; 4011 4012 // We need to complete the class type so we can get all of the method types 4013 // parsed so we can then unique those types to their equivalent counterparts 4014 // in "dst_cu" and "dst_class_die" 4015 class_type->GetFullCompilerType(); 4016 4017 DWARFDIE src_die; 4018 DWARFDIE dst_die; 4019 UniqueCStringMap<DWARFDIE> src_name_to_die; 4020 UniqueCStringMap<DWARFDIE> dst_name_to_die; 4021 UniqueCStringMap<DWARFDIE> src_name_to_die_artificial; 4022 UniqueCStringMap<DWARFDIE> dst_name_to_die_artificial; 4023 for (src_die = src_class_die.GetFirstChild(); src_die.IsValid(); 4024 src_die = src_die.GetSibling()) { 4025 if (src_die.Tag() == DW_TAG_subprogram) { 4026 // Make sure this is a declaration and not a concrete instance by looking 4027 // for DW_AT_declaration set to 1. Sometimes concrete function instances 4028 // are placed inside the class definitions and shouldn't be included in 4029 // the list of things are are tracking here. 4030 if (src_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) { 4031 const char *src_name = src_die.GetMangledName(); 4032 if (src_name) { 4033 ConstString src_const_name(src_name); 4034 if (src_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) 4035 src_name_to_die_artificial.Append(src_const_name, src_die); 4036 else 4037 src_name_to_die.Append(src_const_name, src_die); 4038 } 4039 } 4040 } 4041 } 4042 for (dst_die = dst_class_die.GetFirstChild(); dst_die.IsValid(); 4043 dst_die = dst_die.GetSibling()) { 4044 if (dst_die.Tag() == DW_TAG_subprogram) { 4045 // Make sure this is a declaration and not a concrete instance by looking 4046 // for DW_AT_declaration set to 1. Sometimes concrete function instances 4047 // are placed inside the class definitions and shouldn't be included in 4048 // the list of things are are tracking here. 4049 if (dst_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) { 4050 const char *dst_name = dst_die.GetMangledName(); 4051 if (dst_name) { 4052 ConstString dst_const_name(dst_name); 4053 if (dst_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) 4054 dst_name_to_die_artificial.Append(dst_const_name, dst_die); 4055 else 4056 dst_name_to_die.Append(dst_const_name, dst_die); 4057 } 4058 } 4059 } 4060 } 4061 const uint32_t src_size = src_name_to_die.GetSize(); 4062 const uint32_t dst_size = dst_name_to_die.GetSize(); 4063 Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | 4064 // DWARF_LOG_TYPE_COMPLETION)); 4065 4066 // Is everything kosher so we can go through the members at top speed? 4067 bool fast_path = true; 4068 4069 if (src_size != dst_size) { 4070 if (src_size != 0 && dst_size != 0) { 4071 if (log) 4072 log->Printf("warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, " 4073 "but they didn't have the same size (src=%d, dst=%d)", 4074 src_class_die.GetOffset(), dst_class_die.GetOffset(), 4075 src_size, dst_size); 4076 } 4077 4078 fast_path = false; 4079 } 4080 4081 uint32_t idx; 4082 4083 if (fast_path) { 4084 for (idx = 0; idx < src_size; ++idx) { 4085 src_die = src_name_to_die.GetValueAtIndexUnchecked(idx); 4086 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); 4087 4088 if (src_die.Tag() != dst_die.Tag()) { 4089 if (log) 4090 log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, " 4091 "but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)", 4092 src_class_die.GetOffset(), dst_class_die.GetOffset(), 4093 src_die.GetOffset(), src_die.GetTagAsCString(), 4094 dst_die.GetOffset(), dst_die.GetTagAsCString()); 4095 fast_path = false; 4096 } 4097 4098 const char *src_name = src_die.GetMangledName(); 4099 const char *dst_name = dst_die.GetMangledName(); 4100 4101 // Make sure the names match 4102 if (src_name == dst_name || (strcmp(src_name, dst_name) == 0)) 4103 continue; 4104 4105 if (log) 4106 log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, " 4107 "but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)", 4108 src_class_die.GetOffset(), dst_class_die.GetOffset(), 4109 src_die.GetOffset(), src_name, dst_die.GetOffset(), 4110 dst_name); 4111 4112 fast_path = false; 4113 } 4114 } 4115 4116 DWARFASTParserClang *src_dwarf_ast_parser = 4117 (DWARFASTParserClang *)src_die.GetDWARFParser(); 4118 DWARFASTParserClang *dst_dwarf_ast_parser = 4119 (DWARFASTParserClang *)dst_die.GetDWARFParser(); 4120 4121 // Now do the work of linking the DeclContexts and Types. 4122 if (fast_path) { 4123 // We can do this quickly. Just run across the tables index-for-index since 4124 // we know each node has matching names and tags. 4125 for (idx = 0; idx < src_size; ++idx) { 4126 src_die = src_name_to_die.GetValueAtIndexUnchecked(idx); 4127 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); 4128 4129 clang::DeclContext *src_decl_ctx = 4130 src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; 4131 if (src_decl_ctx) { 4132 if (log) 4133 log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x", 4134 static_cast<void *>(src_decl_ctx), src_die.GetOffset(), 4135 dst_die.GetOffset()); 4136 dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die); 4137 } else { 4138 if (log) 4139 log->Printf("warning: tried to unique decl context from 0x%8.8x for " 4140 "0x%8.8x, but none was found", 4141 src_die.GetOffset(), dst_die.GetOffset()); 4142 } 4143 4144 Type *src_child_type = 4145 dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()]; 4146 if (src_child_type) { 4147 if (log) 4148 log->Printf( 4149 "uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", 4150 static_cast<void *>(src_child_type), src_child_type->GetID(), 4151 src_die.GetOffset(), dst_die.GetOffset()); 4152 dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type; 4153 } else { 4154 if (log) 4155 log->Printf("warning: tried to unique lldb_private::Type from " 4156 "0x%8.8x for 0x%8.8x, but none was found", 4157 src_die.GetOffset(), dst_die.GetOffset()); 4158 } 4159 } 4160 } else { 4161 // We must do this slowly. For each member of the destination, look 4162 // up a member in the source with the same name, check its tag, and 4163 // unique them if everything matches up. Report failures. 4164 4165 if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) { 4166 src_name_to_die.Sort(); 4167 4168 for (idx = 0; idx < dst_size; ++idx) { 4169 ConstString dst_name = dst_name_to_die.GetCStringAtIndex(idx); 4170 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); 4171 src_die = src_name_to_die.Find(dst_name, DWARFDIE()); 4172 4173 if (src_die && (src_die.Tag() == dst_die.Tag())) { 4174 clang::DeclContext *src_decl_ctx = 4175 src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; 4176 if (src_decl_ctx) { 4177 if (log) 4178 log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x", 4179 static_cast<void *>(src_decl_ctx), 4180 src_die.GetOffset(), dst_die.GetOffset()); 4181 dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die); 4182 } else { 4183 if (log) 4184 log->Printf("warning: tried to unique decl context from 0x%8.8x " 4185 "for 0x%8.8x, but none was found", 4186 src_die.GetOffset(), dst_die.GetOffset()); 4187 } 4188 4189 Type *src_child_type = 4190 dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()]; 4191 if (src_child_type) { 4192 if (log) 4193 log->Printf("uniquing type %p (uid=0x%" PRIx64 4194 ") from 0x%8.8x for 0x%8.8x", 4195 static_cast<void *>(src_child_type), 4196 src_child_type->GetID(), src_die.GetOffset(), 4197 dst_die.GetOffset()); 4198 dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = 4199 src_child_type; 4200 } else { 4201 if (log) 4202 log->Printf("warning: tried to unique lldb_private::Type from " 4203 "0x%8.8x for 0x%8.8x, but none was found", 4204 src_die.GetOffset(), dst_die.GetOffset()); 4205 } 4206 } else { 4207 if (log) 4208 log->Printf("warning: couldn't find a match for 0x%8.8x", 4209 dst_die.GetOffset()); 4210 4211 failures.Append(dst_die); 4212 } 4213 } 4214 } 4215 } 4216 4217 const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize(); 4218 const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize(); 4219 4220 if (src_size_artificial && dst_size_artificial) { 4221 dst_name_to_die_artificial.Sort(); 4222 4223 for (idx = 0; idx < src_size_artificial; ++idx) { 4224 ConstString src_name_artificial = 4225 src_name_to_die_artificial.GetCStringAtIndex(idx); 4226 src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked(idx); 4227 dst_die = 4228 dst_name_to_die_artificial.Find(src_name_artificial, DWARFDIE()); 4229 4230 if (dst_die) { 4231 // Both classes have the artificial types, link them 4232 clang::DeclContext *src_decl_ctx = 4233 src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; 4234 if (src_decl_ctx) { 4235 if (log) 4236 log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x", 4237 static_cast<void *>(src_decl_ctx), src_die.GetOffset(), 4238 dst_die.GetOffset()); 4239 dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die); 4240 } else { 4241 if (log) 4242 log->Printf("warning: tried to unique decl context from 0x%8.8x " 4243 "for 0x%8.8x, but none was found", 4244 src_die.GetOffset(), dst_die.GetOffset()); 4245 } 4246 4247 Type *src_child_type = 4248 dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()]; 4249 if (src_child_type) { 4250 if (log) 4251 log->Printf( 4252 "uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", 4253 static_cast<void *>(src_child_type), src_child_type->GetID(), 4254 src_die.GetOffset(), dst_die.GetOffset()); 4255 dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type; 4256 } else { 4257 if (log) 4258 log->Printf("warning: tried to unique lldb_private::Type from " 4259 "0x%8.8x for 0x%8.8x, but none was found", 4260 src_die.GetOffset(), dst_die.GetOffset()); 4261 } 4262 } 4263 } 4264 } 4265 4266 if (dst_size_artificial) { 4267 for (idx = 0; idx < dst_size_artificial; ++idx) { 4268 ConstString dst_name_artificial = 4269 dst_name_to_die_artificial.GetCStringAtIndex(idx); 4270 dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked(idx); 4271 if (log) 4272 log->Printf("warning: need to create artificial method for 0x%8.8x for " 4273 "method '%s'", 4274 dst_die.GetOffset(), dst_name_artificial.GetCString()); 4275 4276 failures.Append(dst_die); 4277 } 4278 } 4279 4280 return (failures.Size() != 0); 4281 } 4282