1289550Szbb//===-- SymbolFileDWARF.cpp ------------------------------------*- C++ -*-===// 2289550Szbb// 3289550Szbb// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4289550Szbb// See https://llvm.org/LICENSE.txt for license information. 5289550Szbb// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6289550Szbb// 7289550Szbb//===----------------------------------------------------------------------===// 8289550Szbb 9289550Szbb#include "SymbolFileDWARF.h" 10289550Szbb 11289550Szbb#include "llvm/ADT/Optional.h" 12289550Szbb#include "llvm/Support/Casting.h" 13289550Szbb#include "llvm/Support/Threading.h" 14289550Szbb 15289550Szbb#include "lldb/Core/Module.h" 16289550Szbb#include "lldb/Core/ModuleList.h" 17289550Szbb#include "lldb/Core/ModuleSpec.h" 18289550Szbb#include "lldb/Core/PluginManager.h" 19289550Szbb#include "lldb/Core/Section.h" 20289550Szbb#include "lldb/Core/StreamFile.h" 21289550Szbb#include "lldb/Core/Value.h" 22289550Szbb#include "lldb/Utility/ArchSpec.h" 23289550Szbb#include "lldb/Utility/RegularExpression.h" 24289550Szbb#include "lldb/Utility/Scalar.h" 25289550Szbb#include "lldb/Utility/StreamString.h" 26289550Szbb#include "lldb/Utility/Timer.h" 27289550Szbb 28289550Szbb#include "Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.h" 29289551Szbb#include "Plugins/Language/CPlusPlus/CPlusPlusLanguage.h" 30289551Szbb 31289550Szbb#include "lldb/Host/FileSystem.h" 32296030Szbb#include "lldb/Host/Host.h" 33296030Szbb 34296030Szbb#include "lldb/Interpreter/OptionValueFileSpecList.h" 35289551Szbb#include "lldb/Interpreter/OptionValueProperties.h" 36289551Szbb 37289551Szbb#include "lldb/Symbol/Block.h" 38289551Szbb#include "lldb/Symbol/ClangASTContext.h" 39289551Szbb#include "lldb/Symbol/ClangUtil.h" 40289551Szbb#include "lldb/Symbol/CompileUnit.h" 41289551Szbb#include "lldb/Symbol/CompilerDecl.h" 42289551Szbb#include "lldb/Symbol/CompilerDeclContext.h" 43289551Szbb#include "lldb/Symbol/DebugMacros.h" 44289551Szbb#include "lldb/Symbol/LineTable.h" 45289551Szbb#include "lldb/Symbol/LocateSymbolFile.h" 46289551Szbb#include "lldb/Symbol/ObjectFile.h" 47289551Szbb#include "lldb/Symbol/SymbolFile.h" 48289551Szbb#include "lldb/Symbol/TypeMap.h" 49289551Szbb#include "lldb/Symbol/TypeSystem.h" 50289551Szbb#include "lldb/Symbol/VariableList.h" 51289551Szbb 52289551Szbb#include "lldb/Target/Language.h" 53289551Szbb#include "lldb/Target/Target.h" 54289551Szbb 55289551Szbb#include "AppleDWARFIndex.h" 56289550Szbb#include "DWARFASTParser.h" 57289551Szbb#include "DWARFASTParserClang.h" 58289551Szbb#include "DWARFCompileUnit.h" 59289551Szbb#include "DWARFDebugAbbrev.h" 60289551Szbb#include "DWARFDebugAranges.h" 61289551Szbb#include "DWARFDebugInfo.h" 62289551Szbb#include "DWARFDebugMacro.h" 63289551Szbb#include "DWARFDebugRanges.h" 64289551Szbb#include "DWARFDeclContext.h" 65289551Szbb#include "DWARFFormValue.h" 66289551Szbb#include "DWARFTypeUnit.h" 67297450Szbb#include "DWARFUnit.h" 68297450Szbb#include "DebugNamesDWARFIndex.h" 69289551Szbb#include "LogChannelDWARF.h" 70296030Szbb#include "ManualDWARFIndex.h" 71296030Szbb#include "SymbolFileDWARFDebugMap.h" 72296030Szbb#include "SymbolFileDWARFDwo.h" 73296030Szbb#include "SymbolFileDWARFDwp.h" 74296030Szbb 75296030Szbb#include "llvm/DebugInfo/DWARF/DWARFContext.h" 76296030Szbb#include "llvm/Support/FileSystem.h" 77296030Szbb 78296030Szbb#include <algorithm> 79296030Szbb#include <map> 80289551Szbb#include <memory> 81289551Szbb 82289551Szbb#include <ctype.h> 83289551Szbb#include <string.h> 84289550Szbb 85289550Szbb//#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN 86289550Szbb 87289550Szbb#ifdef ENABLE_DEBUG_PRINTF 88289550Szbb#include <stdio.h> 89289551Szbb#define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__) 90289551Szbb#else 91289551Szbb#define DEBUG_PRINTF(fmt, ...) 92289551Szbb#endif 93289551Szbb 94289551Szbbusing namespace lldb; 95289551Szbbusing namespace lldb_private; 96289551Szbb 97289551Szbbchar SymbolFileDWARF::ID; 98289551Szbb 99289551Szbb// static inline bool 100289551Szbb// child_requires_parent_class_union_or_struct_to_be_completed (dw_tag_t tag) 101289551Szbb//{ 102289551Szbb// switch (tag) 103289551Szbb// { 104289551Szbb// default: 105289551Szbb// break; 106289551Szbb// case DW_TAG_subprogram: 107289551Szbb// case DW_TAG_inlined_subroutine: 108289551Szbb// case DW_TAG_class_type: 109297450Szbb// case DW_TAG_structure_type: 110297450Szbb// case DW_TAG_union_type: 111289551Szbb// return true; 112289551Szbb// } 113289551Szbb// return false; 114289550Szbb//} 115289551Szbb// 116289551Szbb 117289551Szbbnamespace { 118289550Szbb 119289550Szbb#define LLDB_PROPERTIES_symbolfiledwarf 120289551Szbb#include "SymbolFileDWARFProperties.inc" 121289550Szbb 122289550Szbbenum { 123289550Szbb#define LLDB_PROPERTIES_symbolfiledwarf 124289551Szbb#include "SymbolFileDWARFPropertiesEnum.inc" 125289550Szbb}; 126289551Szbb 127289551Szbbclass PluginProperties : public Properties { 128289550Szbbpublic: 129289550Szbb static ConstString GetSettingName() { 130289551Szbb return SymbolFileDWARF::GetPluginNameStatic(); 131289550Szbb } 132289550Szbb 133289550Szbb PluginProperties() { 134289550Szbb m_collection_sp = std::make_shared<OptionValueProperties>(GetSettingName()); 135289550Szbb m_collection_sp->Initialize(g_symbolfiledwarf_properties); 136289551Szbb } 137289551Szbb 138289551Szbb FileSpecList GetSymLinkPaths() { 139289550Szbb const OptionValueFileSpecList *option_value = 140289550Szbb m_collection_sp->GetPropertyAtIndexAsOptionValueFileSpecList( 141289551Szbb nullptr, true, ePropertySymLinkPaths); 142289551Szbb assert(option_value); 143289550Szbb return option_value->GetCurrentValue(); 144289550Szbb } 145289551Szbb 146289551Szbb bool IgnoreFileIndexes() const { 147289551Szbb return m_collection_sp->GetPropertyAtIndexAsBoolean( 148289551Szbb nullptr, ePropertyIgnoreIndexes, false); 149289551Szbb } 150289551Szbb}; 151289551Szbb 152289551Szbbtypedef std::shared_ptr<PluginProperties> SymbolFileDWARFPropertiesSP; 153289551Szbb 154289551Szbbstatic const SymbolFileDWARFPropertiesSP &GetGlobalPluginProperties() { 155289551Szbb static const auto g_settings_sp(std::make_shared<PluginProperties>()); 156289550Szbb return g_settings_sp; 157289551Szbb} 158289551Szbb 159289551Szbb} // namespace 160289550Szbb 161289551Szbbstatic const llvm::DWARFDebugLine::LineTable * 162289551SzbbParseLLVMLineTable(lldb_private::DWARFContext &context, 163289551Szbb llvm::DWARFDebugLine &line, dw_offset_t line_offset, 164289551Szbb dw_offset_t unit_offset) { 165289551Szbb Log *log = LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO); 166289551Szbb 167289551Szbb llvm::DWARFDataExtractor data = context.getOrLoadLineData().GetAsLLVM(); 168289551Szbb llvm::DWARFContext &ctx = context.GetAsLLVM(); 169289551Szbb llvm::Expected<const llvm::DWARFDebugLine::LineTable *> line_table = 170289551Szbb line.getOrParseLineTable( 171289551Szbb data, line_offset, ctx, nullptr, [&](llvm::Error e) { 172289551Szbb LLDB_LOG_ERROR(log, std::move(e), 173289551Szbb "SymbolFileDWARF::ParseLineTable failed to parse"); 174289551Szbb }); 175289551Szbb 176289551Szbb if (!line_table) { 177289551Szbb LLDB_LOG_ERROR(log, line_table.takeError(), 178289551Szbb "SymbolFileDWARF::ParseLineTable failed to parse"); 179289551Szbb return nullptr; 180289551Szbb } 181289551Szbb return *line_table; 182289551Szbb} 183289551Szbb 184289551Szbbstatic llvm::Optional<std::string> 185289551SzbbGetFileByIndex(const llvm::DWARFDebugLine::Prologue &prologue, size_t idx, 186289551Szbb llvm::StringRef compile_dir, FileSpec::Style style) { 187289551Szbb // Try to get an absolute path first. 188289551Szbb std::string abs_path; 189289551Szbb auto absolute = llvm::DILineInfoSpecifier::FileLineInfoKind::AbsoluteFilePath; 190289551Szbb if (prologue.getFileNameByIndex(idx, compile_dir, absolute, abs_path, style)) 191289551Szbb return std::move(abs_path); 192289551Szbb 193289551Szbb // Otherwise ask for a relative path. 194289551Szbb std::string rel_path; 195289551Szbb auto relative = llvm::DILineInfoSpecifier::FileLineInfoKind::Default; 196289551Szbb if (!prologue.getFileNameByIndex(idx, compile_dir, relative, rel_path, style)) 197289551Szbb return {}; 198289551Szbb return std::move(rel_path); 199289551Szbb} 200289551Szbb 201289551Szbbstatic FileSpecList 202289551SzbbParseSupportFilesFromPrologue(const lldb::ModuleSP &module, 203289551Szbb const llvm::DWARFDebugLine::Prologue &prologue, 204289551Szbb FileSpec::Style style, 205289551Szbb llvm::StringRef compile_dir = {}) { 206289551Szbb FileSpecList support_files; 207289551Szbb size_t first_file = 0; 208289551Szbb if (prologue.getVersion() <= 4) { 209289551Szbb // File index 0 is not valid before DWARF v5. Add a dummy entry to ensure 210289550Szbb // support file list indices match those we get from the debug info and line 211289551Szbb // tables. 212289550Szbb support_files.Append(FileSpec()); 213289551Szbb first_file = 1; 214289551Szbb } 215289551Szbb 216289551Szbb const size_t number_of_files = prologue.FileNames.size(); 217289551Szbb for (size_t idx = first_file; idx <= number_of_files; ++idx) { 218289551Szbb std::string remapped_file; 219289551Szbb if (auto file_path = GetFileByIndex(prologue, idx, compile_dir, style)) 220289551Szbb if (!module->RemapSourceFile(llvm::StringRef(*file_path), remapped_file)) 221289551Szbb remapped_file = std::move(*file_path); 222289551Szbb 223289551Szbb // Unconditionally add an entry, so the indices match up. 224289551Szbb support_files.EmplaceBack(remapped_file, style); 225289550Szbb } 226289550Szbb 227289550Szbb return support_files; 228289551Szbb} 229289551Szbb 230289550SzbbFileSpecList SymbolFileDWARF::GetSymlinkPaths() { 231289551Szbb return GetGlobalPluginProperties()->GetSymLinkPaths(); 232289551Szbb} 233289551Szbb 234289550Szbbvoid SymbolFileDWARF::Initialize() { 235289550Szbb LogChannelDWARF::Initialize(); 236289551Szbb PluginManager::RegisterPlugin(GetPluginNameStatic(), 237289551Szbb GetPluginDescriptionStatic(), CreateInstance, 238289551Szbb DebuggerInitialize); 239289551Szbb} 240289551Szbb 241289551Szbbvoid SymbolFileDWARF::DebuggerInitialize(Debugger &debugger) { 242289551Szbb if (!PluginManager::GetSettingForSymbolFilePlugin( 243289551Szbb debugger, PluginProperties::GetSettingName())) { 244289551Szbb const bool is_global_setting = true; 245289551Szbb PluginManager::CreateSettingForSymbolFilePlugin( 246289551Szbb debugger, GetGlobalPluginProperties()->GetValueProperties(), 247289551Szbb ConstString("Properties for the dwarf symbol-file plug-in."), 248289550Szbb is_global_setting); 249289550Szbb } 250289550Szbb} 251289551Szbb 252289551Szbbvoid SymbolFileDWARF::Terminate() { 253289550Szbb PluginManager::UnregisterPlugin(CreateInstance); 254289550Szbb LogChannelDWARF::Terminate(); 255289550Szbb} 256289550Szbb 257289551Szbblldb_private::ConstString SymbolFileDWARF::GetPluginNameStatic() { 258289551Szbb static ConstString g_name("dwarf"); 259289551Szbb return g_name; 260289550Szbb} 261289551Szbb 262289550Szbbconst char *SymbolFileDWARF::GetPluginDescriptionStatic() { 263289551Szbb return "DWARF and DWARF3 debug symbol file reader."; 264289551Szbb} 265289551Szbb 266289550SzbbSymbolFile *SymbolFileDWARF::CreateInstance(ObjectFileSP objfile_sp) { 267289551Szbb return new SymbolFileDWARF(std::move(objfile_sp), 268289551Szbb /*dwo_section_list*/ nullptr); 269289551Szbb} 270289550Szbb 271289551SzbbTypeList &SymbolFileDWARF::GetTypeList() { 272289551Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 273289551Szbb if (SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile()) 274289551Szbb return debug_map_symfile->GetTypeList(); 275289551Szbb return SymbolFile::GetTypeList(); 276289551Szbb} 277289551Szbbvoid SymbolFileDWARF::GetTypes(const DWARFDIE &die, dw_offset_t min_die_offset, 278289551Szbb dw_offset_t max_die_offset, uint32_t type_mask, 279289551Szbb TypeSet &type_set) { 280289551Szbb if (die) { 281289551Szbb const dw_offset_t die_offset = die.GetOffset(); 282289551Szbb 283289551Szbb if (die_offset >= max_die_offset) 284289551Szbb return; 285289551Szbb 286289550Szbb if (die_offset >= min_die_offset) { 287289551Szbb const dw_tag_t tag = die.Tag(); 288289551Szbb 289289551Szbb bool add_type = false; 290289551Szbb 291289551Szbb switch (tag) { 292289551Szbb case DW_TAG_array_type: 293289551Szbb add_type = (type_mask & eTypeClassArray) != 0; 294289551Szbb break; 295289550Szbb case DW_TAG_unspecified_type: 296289551Szbb case DW_TAG_base_type: 297289551Szbb add_type = (type_mask & eTypeClassBuiltin) != 0; 298289551Szbb break; 299289550Szbb case DW_TAG_class_type: 300289551Szbb add_type = (type_mask & eTypeClassClass) != 0; 301289550Szbb break; 302289551Szbb case DW_TAG_structure_type: 303289550Szbb add_type = (type_mask & eTypeClassStruct) != 0; 304289550Szbb break; 305289551Szbb case DW_TAG_union_type: 306289551Szbb add_type = (type_mask & eTypeClassUnion) != 0; 307289551Szbb break; 308289550Szbb case DW_TAG_enumeration_type: 309289551Szbb add_type = (type_mask & eTypeClassEnumeration) != 0; 310289550Szbb break; 311289550Szbb case DW_TAG_subroutine_type: 312289550Szbb case DW_TAG_subprogram: 313289551Szbb case DW_TAG_inlined_subroutine: 314289550Szbb add_type = (type_mask & eTypeClassFunction) != 0; 315289551Szbb break; 316289551Szbb case DW_TAG_pointer_type: 317289551Szbb add_type = (type_mask & eTypeClassPointer) != 0; 318289551Szbb break; 319289551Szbb case DW_TAG_rvalue_reference_type: 320289550Szbb case DW_TAG_reference_type: 321289551Szbb add_type = (type_mask & eTypeClassReference) != 0; 322289551Szbb break; 323289551Szbb case DW_TAG_typedef: 324289551Szbb add_type = (type_mask & eTypeClassTypedef) != 0; 325289551Szbb break; 326289550Szbb case DW_TAG_ptr_to_member_type: 327289551Szbb add_type = (type_mask & eTypeClassMemberPointer) != 0; 328289551Szbb break; 329289550Szbb default: 330289551Szbb break; 331289550Szbb } 332289550Szbb 333289550Szbb if (add_type) { 334289551Szbb const bool assert_not_being_parsed = true; 335289551Szbb Type *type = ResolveTypeUID(die, assert_not_being_parsed); 336289551Szbb if (type) { 337289550Szbb if (type_set.find(type) == type_set.end()) 338289551Szbb type_set.insert(type); 339289551Szbb } 340289551Szbb } 341289550Szbb } 342289550Szbb 343289550Szbb for (DWARFDIE child_die = die.GetFirstChild(); child_die.IsValid(); 344289551Szbb child_die = child_die.GetSibling()) { 345289550Szbb GetTypes(child_die, min_die_offset, max_die_offset, type_mask, type_set); 346289551Szbb } 347289551Szbb } 348289551Szbb} 349289551Szbb 350289551Szbbvoid SymbolFileDWARF::GetTypes(SymbolContextScope *sc_scope, 351289551Szbb TypeClass type_mask, TypeList &type_list) 352289550Szbb 353289550Szbb{ 354289551Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 355289551Szbb TypeSet type_set; 356289551Szbb 357289551Szbb CompileUnit *comp_unit = nullptr; 358289551Szbb DWARFUnit *dwarf_cu = nullptr; 359289551Szbb if (sc_scope) 360289550Szbb comp_unit = sc_scope->CalculateSymbolContextCompileUnit(); 361289551Szbb 362289551Szbb if (comp_unit) { 363289550Szbb dwarf_cu = GetDWARFCompileUnit(comp_unit); 364289551Szbb if (!dwarf_cu) 365289551Szbb return; 366289551Szbb GetTypes(dwarf_cu->DIE(), dwarf_cu->GetOffset(), 367289551Szbb dwarf_cu->GetNextUnitOffset(), type_mask, type_set); 368289551Szbb } else { 369289551Szbb DWARFDebugInfo *info = DebugInfo(); 370289551Szbb if (info) { 371289551Szbb const size_t num_cus = info->GetNumUnits(); 372289551Szbb for (size_t cu_idx = 0; cu_idx < num_cus; ++cu_idx) { 373289551Szbb dwarf_cu = info->GetUnitAtIndex(cu_idx); 374289551Szbb if (dwarf_cu) { 375289551Szbb GetTypes(dwarf_cu->DIE(), 0, UINT32_MAX, type_mask, type_set); 376289551Szbb } 377289551Szbb } 378289551Szbb } 379289551Szbb } 380289551Szbb 381289551Szbb std::set<CompilerType> compiler_type_set; 382289551Szbb for (Type *type : type_set) { 383289551Szbb CompilerType compiler_type = type->GetForwardCompilerType(); 384289551Szbb if (compiler_type_set.find(compiler_type) == compiler_type_set.end()) { 385289551Szbb compiler_type_set.insert(compiler_type); 386289551Szbb type_list.Insert(type->shared_from_this()); 387289551Szbb } 388289551Szbb } 389289551Szbb} 390289551Szbb 391289551Szbb// Gets the first parent that is a lexical block, function or inlined 392289551Szbb// subroutine, or compile unit. 393289551SzbbDWARFDIE 394289551SzbbSymbolFileDWARF::GetParentSymbolContextDIE(const DWARFDIE &child_die) { 395289551Szbb DWARFDIE die; 396289551Szbb for (die = child_die.GetParent(); die; die = die.GetParent()) { 397289551Szbb dw_tag_t tag = die.Tag(); 398289551Szbb 399289550Szbb switch (tag) { 400289551Szbb case DW_TAG_compile_unit: 401289551Szbb case DW_TAG_partial_unit: 402289551Szbb case DW_TAG_subprogram: 403289551Szbb case DW_TAG_inlined_subroutine: 404289551Szbb case DW_TAG_lexical_block: 405289551Szbb return die; 406289551Szbb default: 407289550Szbb break; 408289551Szbb } 409289551Szbb } 410289551Szbb return DWARFDIE(); 411289551Szbb} 412289551Szbb 413289550SzbbSymbolFileDWARF::SymbolFileDWARF(ObjectFileSP objfile_sp, 414289551Szbb SectionList *dwo_section_list) 415289550Szbb : SymbolFile(std::move(objfile_sp)), 416289551Szbb UserID(0x7fffffff00000000), // Used by SymbolFileDWARFDebugMap to 417289551Szbb // when this class parses .o files to 418289551Szbb // contain the .o file index/ID 419289551Szbb m_debug_map_module_wp(), m_debug_map_symfile(nullptr), 420289551Szbb m_context(m_objfile_sp->GetModule()->GetSectionList(), dwo_section_list), 421289551Szbb m_data_debug_loc(), m_abbr(), m_info(), m_fetched_external_modules(false), 422289551Szbb m_supports_DW_AT_APPLE_objc_complete_type(eLazyBoolCalculate), 423289551Szbb m_unique_ast_type_map() {} 424289551Szbb 425289551SzbbSymbolFileDWARF::~SymbolFileDWARF() {} 426289550Szbb 427289550Szbbstatic ConstString GetDWARFMachOSegmentName() { 428289550Szbb static ConstString g_dwarf_section_name("__DWARF"); 429289551Szbb return g_dwarf_section_name; 430289551Szbb} 431289550Szbb 432289551SzbbUniqueDWARFASTTypeMap &SymbolFileDWARF::GetUniqueDWARFASTTypeMap() { 433289551Szbb SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile(); 434289550Szbb if (debug_map_symfile) 435289550Szbb return debug_map_symfile->GetUniqueDWARFASTTypeMap(); 436289551Szbb else 437289551Szbb return m_unique_ast_type_map; 438289551Szbb} 439289550Szbb 440289551Szbbllvm::Expected<TypeSystem &> 441289550SzbbSymbolFileDWARF::GetTypeSystemForLanguage(LanguageType language) { 442289551Szbb if (SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile()) 443289550Szbb return debug_map_symfile->GetTypeSystemForLanguage(language); 444289550Szbb 445289551Szbb auto type_system_or_err = 446289551Szbb m_objfile_sp->GetModule()->GetTypeSystemForLanguage(language); 447289551Szbb if (type_system_or_err) { 448289551Szbb type_system_or_err->SetSymbolFile(this); 449289551Szbb } 450289551Szbb return type_system_or_err; 451289551Szbb} 452289551Szbb 453289551Szbbvoid SymbolFileDWARF::InitializeObject() { 454289551Szbb Log *log = LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO); 455289551Szbb 456289550Szbb if (!GetGlobalPluginProperties()->IgnoreFileIndexes()) { 457289551Szbb DWARFDataExtractor apple_names, apple_namespaces, apple_types, apple_objc; 458289551Szbb LoadSectionData(eSectionTypeDWARFAppleNames, apple_names); 459289551Szbb LoadSectionData(eSectionTypeDWARFAppleNamespaces, apple_namespaces); 460289551Szbb LoadSectionData(eSectionTypeDWARFAppleTypes, apple_types); 461289551Szbb LoadSectionData(eSectionTypeDWARFAppleObjC, apple_objc); 462289551Szbb 463289551Szbb m_index = AppleDWARFIndex::Create( 464289551Szbb *GetObjectFile()->GetModule(), apple_names, apple_namespaces, 465289551Szbb apple_types, apple_objc, m_context.getOrLoadStrData()); 466289551Szbb 467289551Szbb if (m_index) 468289551Szbb return; 469289551Szbb 470289551Szbb DWARFDataExtractor debug_names; 471289551Szbb LoadSectionData(eSectionTypeDWARFDebugNames, debug_names); 472289551Szbb if (debug_names.GetByteSize() > 0) { 473289551Szbb llvm::Expected<std::unique_ptr<DebugNamesDWARFIndex>> index_or = 474289551Szbb DebugNamesDWARFIndex::Create( 475289551Szbb *GetObjectFile()->GetModule(), debug_names, 476289551Szbb m_context.getOrLoadStrData(), DebugInfo()); 477289551Szbb if (index_or) { 478289551Szbb m_index = std::move(*index_or); 479289551Szbb return; 480289551Szbb } 481289551Szbb LLDB_LOG_ERROR(log, index_or.takeError(), 482289551Szbb "Unable to read .debug_names data: {0}"); 483289551Szbb } 484289551Szbb } 485289551Szbb 486289551Szbb m_index = std::make_unique<ManualDWARFIndex>(*GetObjectFile()->GetModule(), 487289551Szbb DebugInfo()); 488289551Szbb} 489289551Szbb 490289550Szbbbool SymbolFileDWARF::SupportedVersion(uint16_t version) { 491289551Szbb return version >= 2 && version <= 5; 492289551Szbb} 493289551Szbb 494289551Szbbuint32_t SymbolFileDWARF::CalculateAbilities() { 495289551Szbb uint32_t abilities = 0; 496289551Szbb if (m_objfile_sp != nullptr) { 497289551Szbb const Section *section = nullptr; 498289551Szbb const SectionList *section_list = m_objfile_sp->GetSectionList(); 499289551Szbb if (section_list == nullptr) 500289551Szbb return 0; 501289551Szbb 502289551Szbb uint64_t debug_abbrev_file_size = 0; 503289551Szbb uint64_t debug_info_file_size = 0; 504289551Szbb uint64_t debug_line_file_size = 0; 505289551Szbb 506289551Szbb section = section_list->FindSectionByName(GetDWARFMachOSegmentName()).get(); 507289551Szbb 508289551Szbb if (section) 509289551Szbb section_list = §ion->GetChildren(); 510289551Szbb 511289551Szbb section = 512289551Szbb section_list->FindSectionByType(eSectionTypeDWARFDebugInfo, true).get(); 513289551Szbb if (section != nullptr) { 514289551Szbb debug_info_file_size = section->GetFileSize(); 515289551Szbb 516289550Szbb section = 517289550Szbb section_list->FindSectionByType(eSectionTypeDWARFDebugAbbrev, true) 518289550Szbb .get(); 519289550Szbb if (section) 520289550Szbb debug_abbrev_file_size = section->GetFileSize(); 521289550Szbb 522289551Szbb DWARFDebugAbbrev *abbrev = DebugAbbrev(); 523289551Szbb if (abbrev) { 524289550Szbb std::set<dw_form_t> invalid_forms; 525289551Szbb abbrev->GetUnsupportedForms(invalid_forms); 526289551Szbb if (!invalid_forms.empty()) { 527289550Szbb StreamString error; 528289551Szbb error.Printf("unsupported DW_FORM value%s:", 529289551Szbb invalid_forms.size() > 1 ? "s" : ""); 530289551Szbb for (auto form : invalid_forms) 531289550Szbb error.Printf(" %#x", form); 532289550Szbb m_objfile_sp->GetModule()->ReportWarning( 533289550Szbb "%s", error.GetString().str().c_str()); 534289551Szbb return 0; 535289551Szbb } 536289551Szbb } 537289551Szbb 538289550Szbb section = 539289551Szbb section_list->FindSectionByType(eSectionTypeDWARFDebugLine, true) 540289551Szbb .get(); 541289551Szbb if (section) 542289551Szbb debug_line_file_size = section->GetFileSize(); 543289551Szbb } else { 544289551Szbb const char *symfile_dir_cstr = 545289550Szbb m_objfile_sp->GetFileSpec().GetDirectory().GetCString(); 546289550Szbb if (symfile_dir_cstr) { 547289551Szbb if (strcasestr(symfile_dir_cstr, ".dsym")) { 548289550Szbb if (m_objfile_sp->GetType() == ObjectFile::eTypeDebugInfo) { 549289550Szbb // We have a dSYM file that didn't have a any debug info. If the 550289550Szbb // string table has a size of 1, then it was made from an 551289550Szbb // executable with no debug info, or from an executable that was 552289550Szbb // stripped. 553289551Szbb section = 554289551Szbb section_list->FindSectionByType(eSectionTypeDWARFDebugStr, true) 555289551Szbb .get(); 556289551Szbb if (section && section->GetFileSize() == 1) { 557289550Szbb m_objfile_sp->GetModule()->ReportWarning( 558289550Szbb "empty dSYM file detected, dSYM was created with an " 559289550Szbb "executable with no debug info."); 560289550Szbb } 561289550Szbb } 562289550Szbb } 563289550Szbb } 564289550Szbb } 565289551Szbb 566289551Szbb if (debug_abbrev_file_size > 0 && debug_info_file_size > 0) 567289551Szbb abilities |= CompileUnits | Functions | Blocks | GlobalVariables | 568289551Szbb LocalVariables | VariableTypes; 569289550Szbb 570289551Szbb if (debug_line_file_size > 0) 571289550Szbb abilities |= LineTables; 572289551Szbb } 573289550Szbb return abilities; 574289550Szbb} 575289550Szbb 576289550Szbbconst DWARFDataExtractor & 577289550SzbbSymbolFileDWARF::GetCachedSectionData(lldb::SectionType sect_type, 578289551Szbb DWARFDataSegment &data_segment) { 579289550Szbb llvm::call_once(data_segment.m_flag, [this, sect_type, &data_segment] { 580289550Szbb this->LoadSectionData(sect_type, std::ref(data_segment.m_data)); 581289551Szbb }); 582289551Szbb return data_segment.m_data; 583289550Szbb} 584289550Szbb 585289550Szbbvoid SymbolFileDWARF::LoadSectionData(lldb::SectionType sect_type, 586289550Szbb DWARFDataExtractor &data) { 587289551Szbb ModuleSP module_sp(m_objfile_sp->GetModule()); 588289551Szbb const SectionList *section_list = module_sp->GetSectionList(); 589289551Szbb if (!section_list) 590289551Szbb return; 591289551Szbb 592289551Szbb SectionSP section_sp(section_list->FindSectionByType(sect_type, true)); 593289550Szbb if (!section_sp) 594289550Szbb return; 595289551Szbb 596289551Szbb data.Clear(); 597289551Szbb m_objfile_sp->ReadSectionData(section_sp.get(), data); 598289551Szbb} 599289550Szbb 600289550SzbbDWARFDebugAbbrev *SymbolFileDWARF::DebugAbbrev() { 601289551Szbb if (m_abbr) 602289551Szbb return m_abbr.get(); 603289551Szbb 604289550Szbb const DWARFDataExtractor &debug_abbrev_data = m_context.getOrLoadAbbrevData(); 605289551Szbb if (debug_abbrev_data.GetByteSize() == 0) 606289551Szbb return nullptr; 607289550Szbb 608289551Szbb auto abbr = std::make_unique<DWARFDebugAbbrev>(); 609289551Szbb llvm::Error error = abbr->parse(debug_abbrev_data); 610289551Szbb if (error) { 611289551Szbb Log *log = LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO); 612289551Szbb LLDB_LOG_ERROR(log, std::move(error), 613289551Szbb "Unable to read .debug_abbrev section: {0}"); 614289551Szbb return nullptr; 615289550Szbb } 616289550Szbb 617289551Szbb m_abbr = std::move(abbr); 618289551Szbb return m_abbr.get(); 619289551Szbb} 620289550Szbb 621289551Szbbconst DWARFDebugAbbrev *SymbolFileDWARF::DebugAbbrev() const { 622289551Szbb return m_abbr.get(); 623289550Szbb} 624289551Szbb 625289551SzbbDWARFDebugInfo *SymbolFileDWARF::DebugInfo() { 626289551Szbb if (m_info == nullptr) { 627289551Szbb static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 628289551Szbb Timer scoped_timer(func_cat, "%s this = %p", LLVM_PRETTY_FUNCTION, 629289551Szbb static_cast<void *>(this)); 630289551Szbb if (m_context.getOrLoadDebugInfoData().GetByteSize() > 0) 631289551Szbb m_info = std::make_unique<DWARFDebugInfo>(*this, m_context); 632289551Szbb } 633289550Szbb return m_info.get(); 634289550Szbb} 635289550Szbb 636289551Szbbconst DWARFDebugInfo *SymbolFileDWARF::DebugInfo() const { 637289551Szbb return m_info.get(); 638289551Szbb} 639289551Szbb 640289551SzbbDWARFUnit * 641296031SzbbSymbolFileDWARF::GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit) { 642289551Szbb if (!comp_unit) 643289551Szbb return nullptr; 644289551Szbb 645289551Szbb DWARFDebugInfo *info = DebugInfo(); 646296031Szbb if (info) { 647289551Szbb // The compile unit ID is the index of the DWARF unit. 648289551Szbb DWARFUnit *dwarf_cu = info->GetUnitAtIndex(comp_unit->GetID()); 649289551Szbb if (dwarf_cu && dwarf_cu->GetUserData() == nullptr) 650289551Szbb dwarf_cu->SetUserData(comp_unit); 651289551Szbb return dwarf_cu; 652289551Szbb } 653289551Szbb return nullptr; 654289551Szbb} 655289551Szbb 656289551SzbbDWARFDebugRanges *SymbolFileDWARF::GetDebugRanges() { 657289551Szbb if (!m_ranges) { 658289551Szbb static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 659289551Szbb Timer scoped_timer(func_cat, "%s this = %p", LLVM_PRETTY_FUNCTION, 660289551Szbb static_cast<void *>(this)); 661289551Szbb 662289551Szbb if (m_context.getOrLoadRangesData().GetByteSize() > 0) 663289551Szbb m_ranges.reset(new DWARFDebugRanges()); 664289551Szbb 665296031Szbb if (m_ranges) 666296031Szbb m_ranges->Extract(m_context); 667296031Szbb } 668296031Szbb return m_ranges.get(); 669296031Szbb} 670296031Szbb 671296031Szbblldb::CompUnitSP SymbolFileDWARF::ParseCompileUnit(DWARFCompileUnit &dwarf_cu) { 672296031Szbb CompUnitSP cu_sp; 673296031Szbb CompileUnit *comp_unit = (CompileUnit *)dwarf_cu.GetUserData(); 674296031Szbb if (comp_unit) { 675296031Szbb // We already parsed this compile unit, had out a shared pointer to it 676296031Szbb cu_sp = comp_unit->shared_from_this(); 677296031Szbb } else { 678289551Szbb if (&dwarf_cu.GetSymbolFileDWARF() != this) { 679289551Szbb return dwarf_cu.GetSymbolFileDWARF().ParseCompileUnit(dwarf_cu); 680289551Szbb } else if (dwarf_cu.GetOffset() == 0 && GetDebugMapSymfile()) { 681289551Szbb // Let the debug map create the compile unit 682289551Szbb cu_sp = m_debug_map_symfile->GetCompileUnit(this); 683289551Szbb dwarf_cu.SetUserData(cu_sp.get()); 684289551Szbb } else { 685289551Szbb ModuleSP module_sp(m_objfile_sp->GetModule()); 686289551Szbb if (module_sp) { 687289551Szbb const DWARFBaseDIE cu_die = 688289551Szbb dwarf_cu.GetNonSkeletonUnit().GetUnitDIEOnly(); 689289551Szbb if (cu_die) { 690289551Szbb FileSpec cu_file_spec(cu_die.GetName(), dwarf_cu.GetPathStyle()); 691289551Szbb if (cu_file_spec) { 692289551Szbb // If we have a full path to the compile unit, we don't need to 693289551Szbb // resolve the file. This can be expensive e.g. when the source 694289551Szbb // files are NFS mounted. 695289551Szbb cu_file_spec.MakeAbsolute(dwarf_cu.GetCompilationDirectory()); 696289551Szbb 697289551Szbb std::string remapped_file; 698289551Szbb if (module_sp->RemapSourceFile(cu_file_spec.GetPath(), 699289551Szbb remapped_file)) 700289551Szbb cu_file_spec.SetFile(remapped_file, FileSpec::Style::native); 701289551Szbb } 702289551Szbb 703289551Szbb LanguageType cu_language = DWARFUnit::LanguageTypeFromDWARF( 704289551Szbb cu_die.GetAttributeValueAsUnsigned(DW_AT_language, 0)); 705289551Szbb 706289551Szbb bool is_optimized = dwarf_cu.GetNonSkeletonUnit().GetIsOptimized(); 707289551Szbb BuildCuTranslationTable(); 708289551Szbb cu_sp = std::make_shared<CompileUnit>( 709289551Szbb module_sp, &dwarf_cu, cu_file_spec, 710289551Szbb *GetDWARFUnitIndex(dwarf_cu.GetID()), cu_language, 711289551Szbb is_optimized ? eLazyBoolYes : eLazyBoolNo); 712289551Szbb 713289551Szbb dwarf_cu.SetUserData(cu_sp.get()); 714289551Szbb 715289551Szbb SetCompileUnitAtIndex(dwarf_cu.GetID(), cu_sp); 716289551Szbb } 717289551Szbb } 718289551Szbb } 719289551Szbb } 720289551Szbb return cu_sp; 721289551Szbb} 722289551Szbb 723289551Szbbvoid SymbolFileDWARF::BuildCuTranslationTable() { 724289551Szbb if (!m_lldb_cu_to_dwarf_unit.empty()) 725289551Szbb return; 726289551Szbb 727296602Szbb DWARFDebugInfo *info = DebugInfo(); 728289551Szbb if (!info) 729289551Szbb return; 730289551Szbb 731289551Szbb if (!info->ContainsTypeUnits()) { 732289551Szbb // We can use a 1-to-1 mapping. No need to build a translation table. 733289551Szbb return; 734289551Szbb } 735289551Szbb for (uint32_t i = 0, num = info->GetNumUnits(); i < num; ++i) { 736289551Szbb if (auto *cu = llvm::dyn_cast<DWARFCompileUnit>(info->GetUnitAtIndex(i))) { 737289551Szbb cu->SetID(m_lldb_cu_to_dwarf_unit.size()); 738289551Szbb m_lldb_cu_to_dwarf_unit.push_back(i); 739289551Szbb } 740289551Szbb } 741289551Szbb} 742289551Szbb 743289551Szbbllvm::Optional<uint32_t> SymbolFileDWARF::GetDWARFUnitIndex(uint32_t cu_idx) { 744289551Szbb BuildCuTranslationTable(); 745297450Szbb if (m_lldb_cu_to_dwarf_unit.empty()) 746296031Szbb return cu_idx; 747289551Szbb if (cu_idx >= m_lldb_cu_to_dwarf_unit.size()) 748296031Szbb return llvm::None; 749296031Szbb return m_lldb_cu_to_dwarf_unit[cu_idx]; 750289551Szbb} 751289551Szbb 752289551Szbbuint32_t SymbolFileDWARF::CalculateNumCompileUnits() { 753289551Szbb DWARFDebugInfo *info = DebugInfo(); 754289551Szbb if (!info) 755289551Szbb return 0; 756289551Szbb BuildCuTranslationTable(); 757289551Szbb return m_lldb_cu_to_dwarf_unit.empty() ? info->GetNumUnits() 758289551Szbb : m_lldb_cu_to_dwarf_unit.size(); 759289551Szbb} 760289551Szbb 761289551SzbbCompUnitSP SymbolFileDWARF::ParseCompileUnitAtIndex(uint32_t cu_idx) { 762289551Szbb ASSERT_MODULE_LOCK(this); 763289551Szbb DWARFDebugInfo *info = DebugInfo(); 764289551Szbb if (!info) 765289551Szbb return {}; 766289551Szbb 767289551Szbb if (llvm::Optional<uint32_t> dwarf_idx = GetDWARFUnitIndex(cu_idx)) { 768289551Szbb if (auto *dwarf_cu = llvm::cast_or_null<DWARFCompileUnit>( 769289551Szbb info->GetUnitAtIndex(*dwarf_idx))) 770289551Szbb return ParseCompileUnit(*dwarf_cu); 771289551Szbb } 772296032Szbb return {}; 773296032Szbb} 774289551Szbb 775289551SzbbFunction *SymbolFileDWARF::ParseFunction(CompileUnit &comp_unit, 776289551Szbb const DWARFDIE &die) { 777289551Szbb ASSERT_MODULE_LOCK(this); 778289551Szbb if (!die.IsValid()) 779289551Szbb return nullptr; 780289551Szbb 781289551Szbb auto type_system_or_err = 782289551Szbb GetTypeSystemForLanguage(die.GetCU()->GetLanguageType()); 783289551Szbb if (auto err = type_system_or_err.takeError()) { 784289551Szbb LLDB_LOG_ERROR(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), 785289551Szbb std::move(err), "Unable to parse function"); 786289551Szbb return nullptr; 787289551Szbb } 788289551Szbb DWARFASTParser *dwarf_ast = type_system_or_err->GetDWARFParser(); 789289551Szbb if (!dwarf_ast) 790289551Szbb return nullptr; 791289551Szbb 792289551Szbb return dwarf_ast->ParseFunctionFromDWARF(comp_unit, die); 793289551Szbb} 794289551Szbb 795289551Szbbbool SymbolFileDWARF::FixupAddress(Address &addr) { 796289551Szbb SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile(); 797289551Szbb if (debug_map_symfile) { 798289551Szbb return debug_map_symfile->LinkOSOAddress(addr); 799289551Szbb } 800289551Szbb // This is a normal DWARF file, no address fixups need to happen 801289551Szbb return true; 802289551Szbb} 803289551Szbblldb::LanguageType SymbolFileDWARF::ParseLanguage(CompileUnit &comp_unit) { 804289551Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 805289551Szbb DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit); 806289551Szbb if (dwarf_cu) 807289551Szbb return dwarf_cu->GetLanguageType(); 808289551Szbb else 809289551Szbb return eLanguageTypeUnknown; 810289551Szbb} 811289551Szbb 812289551Szbbsize_t SymbolFileDWARF::ParseFunctions(CompileUnit &comp_unit) { 813289551Szbb static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 814289551Szbb Timer scoped_timer(func_cat, "SymbolFileDWARF::ParseFunctions"); 815289551Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 816289551Szbb DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit); 817289551Szbb if (!dwarf_cu) 818289551Szbb return 0; 819289551Szbb 820289551Szbb size_t functions_added = 0; 821289551Szbb dwarf_cu = &dwarf_cu->GetNonSkeletonUnit(); 822289551Szbb for (DWARFDebugInfoEntry &entry : dwarf_cu->dies()) { 823289551Szbb if (entry.Tag() != DW_TAG_subprogram) 824297450Szbb continue; 825289551Szbb 826289551Szbb DWARFDIE die(dwarf_cu, &entry); 827296031Szbb if (comp_unit.FindFunctionByUID(die.GetID())) 828296031Szbb continue; 829296031Szbb if (ParseFunction(comp_unit, die)) 830296031Szbb ++functions_added; 831296031Szbb } 832296031Szbb // FixupTypes(); 833297482Ssephe return functions_added; 834296031Szbb} 835289551Szbb 836289551Szbbbool SymbolFileDWARF::ForEachExternalModule( 837289551Szbb CompileUnit &comp_unit, 838289551Szbb llvm::DenseSet<lldb_private::SymbolFile *> &visited_symbol_files, 839289551Szbb llvm::function_ref<bool(Module &)> lambda) { 840289551Szbb // Only visit each symbol file once. 841289551Szbb if (!visited_symbol_files.insert(this).second) 842289551Szbb return false; 843289551Szbb 844289551Szbb UpdateExternalModuleListIfNeeded(); 845289551Szbb for (auto &p : m_external_type_modules) { 846289551Szbb ModuleSP module = p.second; 847289551Szbb if (!module) 848289551Szbb continue; 849289551Szbb 850289551Szbb // Invoke the action and potentially early-exit. 851289551Szbb if (lambda(*module)) 852289551Szbb return true; 853289551Szbb 854289551Szbb for (std::size_t i = 0; i < module->GetNumCompileUnits(); ++i) { 855289551Szbb auto cu = module->GetCompileUnitAtIndex(i); 856289551Szbb bool early_exit = cu->ForEachExternalModule(visited_symbol_files, lambda); 857289551Szbb if (early_exit) 858289551Szbb return true; 859289551Szbb } 860289551Szbb } 861289551Szbb return false; 862289551Szbb} 863289551Szbb 864289551Szbbbool SymbolFileDWARF::ParseSupportFiles(CompileUnit &comp_unit, 865289551Szbb FileSpecList &support_files) { 866289551Szbb if (!comp_unit.GetLineTable()) 867289551Szbb ParseLineTable(comp_unit); 868289551Szbb return true; 869289551Szbb} 870289551Szbb 871289551SzbbFileSpec SymbolFileDWARF::GetFile(DWARFUnit &unit, size_t file_idx) { 872289551Szbb if (auto *dwarf_cu = llvm::dyn_cast<DWARFCompileUnit>(&unit)) { 873289551Szbb if (CompileUnit *lldb_cu = GetCompUnitForDWARFCompUnit(*dwarf_cu)) 874289551Szbb return lldb_cu->GetSupportFiles().GetFileSpecAtIndex(file_idx); 875289551Szbb return FileSpec(); 876289551Szbb } 877289551Szbb 878289551Szbb auto &tu = llvm::cast<DWARFTypeUnit>(unit); 879289551Szbb return GetTypeUnitSupportFiles(tu).GetFileSpecAtIndex(file_idx); 880289551Szbb} 881289551Szbb 882289551Szbbconst FileSpecList & 883289551SzbbSymbolFileDWARF::GetTypeUnitSupportFiles(DWARFTypeUnit &tu) { 884289551Szbb static FileSpecList empty_list; 885289551Szbb 886289551Szbb dw_offset_t offset = tu.GetLineTableOffset(); 887289551Szbb if (offset == DW_INVALID_OFFSET || 888289551Szbb offset == llvm::DenseMapInfo<dw_offset_t>::getEmptyKey() || 889289551Szbb offset == llvm::DenseMapInfo<dw_offset_t>::getTombstoneKey()) 890289551Szbb return empty_list; 891289551Szbb 892289551Szbb // Many type units can share a line table, so parse the support file list 893289551Szbb // once, and cache it based on the offset field. 894289551Szbb auto iter_bool = m_type_unit_support_files.try_emplace(offset); 895289551Szbb FileSpecList &list = iter_bool.first->second; 896289551Szbb if (iter_bool.second) { 897289551Szbb uint64_t line_table_offset = offset; 898289551Szbb llvm::DWARFDataExtractor data = m_context.getOrLoadLineData().GetAsLLVM(); 899289551Szbb llvm::DWARFContext &ctx = m_context.GetAsLLVM(); 900289551Szbb llvm::DWARFDebugLine::Prologue prologue; 901289551Szbb llvm::Error error = prologue.parse(data, &line_table_offset, ctx); 902289551Szbb if (error) { 903289551Szbb Log *log = LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO); 904289551Szbb LLDB_LOG_ERROR(log, std::move(error), 905289551Szbb "SymbolFileDWARF::GetTypeUnitSupportFiles failed to parse " 906289551Szbb "the line table prologue"); 907289551Szbb } else { 908289551Szbb list = ParseSupportFilesFromPrologue(GetObjectFile()->GetModule(), 909289551Szbb prologue, tu.GetPathStyle()); 910296601Szbb } 911289551Szbb } 912289551Szbb return list; 913289551Szbb} 914289551Szbb 915289551Szbbbool SymbolFileDWARF::ParseIsOptimized(CompileUnit &comp_unit) { 916289550Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 917289551Szbb DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit); 918289551Szbb if (dwarf_cu) 919289551Szbb return dwarf_cu->GetIsOptimized(); 920289550Szbb return false; 921289550Szbb} 922289550Szbb 923289551Szbbbool SymbolFileDWARF::ParseImportedModules( 924289551Szbb const lldb_private::SymbolContext &sc, 925289551Szbb std::vector<SourceModule> &imported_modules) { 926289551Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 927289551Szbb assert(sc.comp_unit); 928289550Szbb DWARFUnit *dwarf_cu = GetDWARFCompileUnit(sc.comp_unit); 929289550Szbb if (!dwarf_cu) 930289550Szbb return false; 931289551Szbb if (!ClangModulesDeclVendor::LanguageSupportsClangModules( 932289551Szbb sc.comp_unit->GetLanguage())) 933289551Szbb return false; 934289551Szbb UpdateExternalModuleListIfNeeded(); 935289551Szbb 936289551Szbb const DWARFDIE die = dwarf_cu->DIE(); 937289550Szbb if (!die) 938296038Szbb return false; 939289551Szbb 940289551Szbb for (DWARFDIE child_die = die.GetFirstChild(); child_die; 941289550Szbb child_die = child_die.GetSibling()) { 942289550Szbb if (child_die.Tag() != DW_TAG_imported_declaration) 943289551Szbb continue; 944289551Szbb 945289551Szbb DWARFDIE module_die = child_die.GetReferencedDIE(DW_AT_import); 946289551Szbb if (module_die.Tag() != DW_TAG_module) 947289551Szbb continue; 948289551Szbb 949289551Szbb if (const char *name = 950289551Szbb module_die.GetAttributeValueAsString(DW_AT_name, nullptr)) { 951289551Szbb SourceModule module; 952289551Szbb module.path.push_back(ConstString(name)); 953289551Szbb 954289550Szbb DWARFDIE parent_die = module_die; 955289550Szbb while ((parent_die = parent_die.GetParent())) { 956289551Szbb if (parent_die.Tag() != DW_TAG_module) 957289551Szbb break; 958289550Szbb if (const char *name = 959289551Szbb parent_die.GetAttributeValueAsString(DW_AT_name, nullptr)) 960289551Szbb module.path.push_back(ConstString(name)); 961289550Szbb } 962289551Szbb std::reverse(module.path.begin(), module.path.end()); 963289551Szbb if (const char *include_path = module_die.GetAttributeValueAsString( 964289551Szbb DW_AT_LLVM_include_path, nullptr)) 965289551Szbb module.search_path = ConstString(include_path); 966289551Szbb if (const char *sysroot = module_die.GetAttributeValueAsString( 967289551Szbb DW_AT_LLVM_sysroot, nullptr)) 968289551Szbb module.sysroot = ConstString(sysroot); 969289550Szbb imported_modules.push_back(module); 970289551Szbb } 971289551Szbb } 972289551Szbb return true; 973289551Szbb} 974289551Szbb 975289551Szbbbool SymbolFileDWARF::ParseLineTable(CompileUnit &comp_unit) { 976289551Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 977289551Szbb if (comp_unit.GetLineTable() != nullptr) 978289551Szbb return true; 979289551Szbb 980289551Szbb DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit); 981289551Szbb if (!dwarf_cu) 982289551Szbb return false; 983289551Szbb 984289551Szbb const DWARFBaseDIE dwarf_cu_die = dwarf_cu->GetUnitDIEOnly(); 985289551Szbb if (!dwarf_cu_die) 986289551Szbb return false; 987289551Szbb 988289550Szbb const dw_offset_t cu_line_offset = dwarf_cu_die.GetAttributeValueAsUnsigned( 989289551Szbb DW_AT_stmt_list, DW_INVALID_OFFSET); 990289551Szbb if (cu_line_offset == DW_INVALID_OFFSET) 991289551Szbb return false; 992289551Szbb 993289550Szbb llvm::DWARFDebugLine line; 994289550Szbb const llvm::DWARFDebugLine::LineTable *line_table = ParseLLVMLineTable( 995297450Szbb m_context, line, cu_line_offset, dwarf_cu->GetOffset()); 996297450Szbb 997297450Szbb if (!line_table) 998297450Szbb return false; 999297450Szbb 1000297450Szbb // FIXME: Rather than parsing the whole line table and then copying it over 1001297450Szbb // into LLDB, we should explore using a callback to populate the line table 1002297450Szbb // while we parse to reduce memory usage. 1003297450Szbb std::unique_ptr<LineTable> line_table_up = 1004297450Szbb std::make_unique<LineTable>(&comp_unit); 1005297450Szbb LineSequence *sequence = line_table_up->CreateLineSequenceContainer(); 1006297450Szbb for (auto &row : line_table->Rows) { 1007297450Szbb line_table_up->AppendLineEntryToSequence( 1008297450Szbb sequence, row.Address.Address, row.Line, row.Column, row.File, 1009297450Szbb row.IsStmt, row.BasicBlock, row.PrologueEnd, row.EpilogueBegin, 1010297450Szbb row.EndSequence); 1011297450Szbb if (row.EndSequence) { 1012297450Szbb line_table_up->InsertSequence(sequence); 1013297450Szbb sequence = line_table_up->CreateLineSequenceContainer(); 1014297450Szbb } 1015297450Szbb } 1016297450Szbb 1017297450Szbb if (SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile()) { 1018297450Szbb // We have an object file that has a line table with addresses that are not 1019297450Szbb // linked. We need to link the line table and convert the addresses that 1020297450Szbb // are relative to the .o file into addresses for the main executable. 1021297450Szbb comp_unit.SetLineTable( 1022297450Szbb debug_map_symfile->LinkOSOLineTable(this, line_table_up.get())); 1023297450Szbb } else { 1024297450Szbb comp_unit.SetLineTable(line_table_up.release()); 1025297450Szbb } 1026289551Szbb 1027289551Szbb comp_unit.SetSupportFiles(ParseSupportFilesFromPrologue( 1028289551Szbb comp_unit.GetModule(), line_table->Prologue, dwarf_cu->GetPathStyle(), 1029289551Szbb dwarf_cu->GetCompilationDirectory().GetCString())); 1030297450Szbb 1031297450Szbb return true; 1032297450Szbb} 1033289551Szbb 1034297450Szbblldb_private::DebugMacrosSP 1035297450SzbbSymbolFileDWARF::ParseDebugMacros(lldb::offset_t *offset) { 1036297450Szbb auto iter = m_debug_macros_map.find(*offset); 1037297450Szbb if (iter != m_debug_macros_map.end()) 1038297450Szbb return iter->second; 1039297450Szbb 1040297450Szbb const DWARFDataExtractor &debug_macro_data = m_context.getOrLoadMacroData(); 1041297450Szbb if (debug_macro_data.GetByteSize() == 0) 1042297450Szbb return DebugMacrosSP(); 1043297450Szbb 1044297450Szbb lldb_private::DebugMacrosSP debug_macros_sp(new lldb_private::DebugMacros()); 1045289551Szbb m_debug_macros_map[*offset] = debug_macros_sp; 1046297450Szbb 1047289551Szbb const DWARFDebugMacroHeader &header = 1048297450Szbb DWARFDebugMacroHeader::ParseHeader(debug_macro_data, offset); 1049297450Szbb DWARFDebugMacroEntry::ReadMacroEntries( 1050297450Szbb debug_macro_data, m_context.getOrLoadStrData(), header.OffsetIs64Bit(), 1051289551Szbb offset, this, debug_macros_sp); 1052289551Szbb 1053289550Szbb return debug_macros_sp; 1054289551Szbb} 1055289551Szbb 1056289551Szbbbool SymbolFileDWARF::ParseDebugMacros(CompileUnit &comp_unit) { 1057289550Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 1058289551Szbb 1059289550Szbb DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit); 1060289550Szbb if (dwarf_cu == nullptr) 1061289551Szbb return false; 1062289551Szbb 1063289551Szbb const DWARFBaseDIE dwarf_cu_die = dwarf_cu->GetUnitDIEOnly(); 1064289551Szbb if (!dwarf_cu_die) 1065289551Szbb return false; 1066289551Szbb 1067289551Szbb lldb::offset_t sect_offset = 1068289551Szbb dwarf_cu_die.GetAttributeValueAsUnsigned(DW_AT_macros, DW_INVALID_OFFSET); 1069289551Szbb if (sect_offset == DW_INVALID_OFFSET) 1070289551Szbb sect_offset = dwarf_cu_die.GetAttributeValueAsUnsigned(DW_AT_GNU_macros, 1071289551Szbb DW_INVALID_OFFSET); 1072289551Szbb if (sect_offset == DW_INVALID_OFFSET) 1073289551Szbb return false; 1074289551Szbb 1075289551Szbb comp_unit.SetDebugMacros(ParseDebugMacros(§_offset)); 1076289551Szbb 1077289551Szbb return true; 1078289550Szbb} 1079289550Szbb 1080289551Szbbsize_t SymbolFileDWARF::ParseBlocksRecursive( 1081289551Szbb lldb_private::CompileUnit &comp_unit, Block *parent_block, 1082289551Szbb const DWARFDIE &orig_die, addr_t subprogram_low_pc, uint32_t depth) { 1083289551Szbb size_t blocks_added = 0; 1084289551Szbb DWARFDIE die = orig_die; 1085289550Szbb while (die) { 1086289550Szbb dw_tag_t tag = die.Tag(); 1087289551Szbb 1088297388Szbb switch (tag) { 1089289550Szbb case DW_TAG_inlined_subroutine: 1090289551Szbb case DW_TAG_subprogram: 1091289551Szbb case DW_TAG_lexical_block: { 1092289550Szbb Block *block = nullptr; 1093289551Szbb if (tag == DW_TAG_subprogram) { 1094289551Szbb // Skip any DW_TAG_subprogram DIEs that are inside of a normal or 1095289551Szbb // inlined functions. These will be parsed on their own as separate 1096289550Szbb // entities. 1097289551Szbb 1098289551Szbb if (depth > 0) 1099289551Szbb break; 1100289551Szbb 1101289551Szbb block = parent_block; 1102289551Szbb } else { 1103289551Szbb BlockSP block_sp(new Block(die.GetID())); 1104289551Szbb parent_block->AddChild(block_sp); 1105296039Szbb block = block_sp.get(); 1106296039Szbb } 1107289551Szbb DWARFRangeList ranges; 1108289551Szbb const char *name = nullptr; 1109289551Szbb const char *mangled_name = nullptr; 1110289551Szbb 1111289551Szbb int decl_file = 0; 1112289551Szbb int decl_line = 0; 1113289551Szbb int decl_column = 0; 1114289551Szbb int call_file = 0; 1115289551Szbb int call_line = 0; 1116289551Szbb int call_column = 0; 1117289551Szbb if (die.GetDIENamesAndRanges(name, mangled_name, ranges, decl_file, 1118289551Szbb decl_line, decl_column, call_file, call_line, 1119289551Szbb call_column, nullptr)) { 1120289551Szbb if (tag == DW_TAG_subprogram) { 1121289551Szbb assert(subprogram_low_pc == LLDB_INVALID_ADDRESS); 1122289551Szbb subprogram_low_pc = ranges.GetMinRangeBase(0); 1123289551Szbb } else if (tag == DW_TAG_inlined_subroutine) { 1124289551Szbb // We get called here for inlined subroutines in two ways. The first 1125289551Szbb // time is when we are making the Function object for this inlined 1126289551Szbb // concrete instance. Since we're creating a top level block at 1127289551Szbb // here, the subprogram_low_pc will be LLDB_INVALID_ADDRESS. So we 1128289551Szbb // need to adjust the containing address. The second time is when we 1129289551Szbb // are parsing the blocks inside the function that contains the 1130289551Szbb // inlined concrete instance. Since these will be blocks inside the 1131289551Szbb // containing "real" function the offset will be for that function. 1132289551Szbb if (subprogram_low_pc == LLDB_INVALID_ADDRESS) { 1133289551Szbb subprogram_low_pc = ranges.GetMinRangeBase(0); 1134289551Szbb } 1135289551Szbb } 1136289551Szbb 1137289551Szbb const size_t num_ranges = ranges.GetSize(); 1138289551Szbb for (size_t i = 0; i < num_ranges; ++i) { 1139289551Szbb const DWARFRangeList::Entry &range = ranges.GetEntryRef(i); 1140289551Szbb const addr_t range_base = range.GetRangeBase(); 1141289551Szbb if (range_base >= subprogram_low_pc) 1142289551Szbb block->AddRange(Block::Range(range_base - subprogram_low_pc, 1143289551Szbb range.GetByteSize())); 1144289551Szbb else { 1145289551Szbb GetObjectFile()->GetModule()->ReportError( 1146289551Szbb "0x%8.8" PRIx64 ": adding range [0x%" PRIx64 "-0x%" PRIx64 1147289551Szbb ") which has a base that is less than the function's low PC " 1148289551Szbb "0x%" PRIx64 ". Please file a bug and attach the file at the " 1149289551Szbb "start of this error message", 1150289551Szbb block->GetID(), range_base, range.GetRangeEnd(), 1151289550Szbb subprogram_low_pc); 1152289550Szbb } 1153289551Szbb } 1154289551Szbb block->FinalizeRanges(); 1155289550Szbb 1156289551Szbb if (tag != DW_TAG_subprogram && 1157289551Szbb (name != nullptr || mangled_name != nullptr)) { 1158289551Szbb std::unique_ptr<Declaration> decl_up; 1159289551Szbb if (decl_file != 0 || decl_line != 0 || decl_column != 0) 1160289551Szbb decl_up.reset(new Declaration( 1161289550Szbb comp_unit.GetSupportFiles().GetFileSpecAtIndex(decl_file), 1162289550Szbb decl_line, decl_column)); 1163289551Szbb 1164289551Szbb std::unique_ptr<Declaration> call_up; 1165289551Szbb if (call_file != 0 || call_line != 0 || call_column != 0) 1166289551Szbb call_up.reset(new Declaration( 1167289550Szbb comp_unit.GetSupportFiles().GetFileSpecAtIndex(call_file), 1168289551Szbb call_line, call_column)); 1169289551Szbb 1170289551Szbb block->SetInlinedFunctionInfo(name, mangled_name, decl_up.get(), 1171289551Szbb call_up.get()); 1172289551Szbb } 1173289551Szbb 1174289551Szbb ++blocks_added; 1175289551Szbb 1176289551Szbb if (die.HasChildren()) { 1177289551Szbb blocks_added += 1178289551Szbb ParseBlocksRecursive(comp_unit, block, die.GetFirstChild(), 1179289551Szbb subprogram_low_pc, depth + 1); 1180289551Szbb } 1181289551Szbb } 1182289551Szbb } break; 1183289551Szbb default: 1184289551Szbb break; 1185289551Szbb } 1186289551Szbb 1187289551Szbb // Only parse siblings of the block if we are not at depth zero. A depth of 1188289551Szbb // zero indicates we are currently parsing the top level DW_TAG_subprogram 1189289551Szbb // DIE 1190289551Szbb 1191289551Szbb if (depth == 0) 1192289551Szbb die.Clear(); 1193289551Szbb else 1194289551Szbb die = die.GetSibling(); 1195289551Szbb } 1196289551Szbb return blocks_added; 1197289551Szbb} 1198289551Szbb 1199289551Szbbbool SymbolFileDWARF::ClassOrStructIsVirtual(const DWARFDIE &parent_die) { 1200289551Szbb if (parent_die) { 1201289551Szbb for (DWARFDIE die = parent_die.GetFirstChild(); die; 1202289551Szbb die = die.GetSibling()) { 1203289551Szbb dw_tag_t tag = die.Tag(); 1204289551Szbb bool check_virtuality = false; 1205289551Szbb switch (tag) { 1206289551Szbb case DW_TAG_inheritance: 1207289551Szbb case DW_TAG_subprogram: 1208289551Szbb check_virtuality = true; 1209289551Szbb break; 1210289551Szbb default: 1211289551Szbb break; 1212289550Szbb } 1213289550Szbb if (check_virtuality) { 1214289551Szbb if (die.GetAttributeValueAsUnsigned(DW_AT_virtuality, 0) != 0) 1215289551Szbb return true; 1216289550Szbb } 1217289551Szbb } 1218289550Szbb } 1219289550Szbb return false; 1220289550Szbb} 1221289550Szbb 1222289550Szbbvoid SymbolFileDWARF::ParseDeclsForContext(CompilerDeclContext decl_ctx) { 1223289550Szbb auto *type_system = decl_ctx.GetTypeSystem(); 1224289550Szbb if (type_system != nullptr) 1225289550Szbb type_system->GetDWARFParser()->EnsureAllDIEsInDeclContextHaveBeenParsed( 1226289550Szbb decl_ctx); 1227289551Szbb} 1228289551Szbb 1229289550Szbbuser_id_t SymbolFileDWARF::GetUID(DIERef ref) { 1230289550Szbb if (GetDebugMapSymfile()) 1231289550Szbb return GetID() | ref.die_offset(); 1232289550Szbb 1233289550Szbb return user_id_t(GetDwoNum().getValueOr(0x7fffffff)) << 32 | 1234289550Szbb ref.die_offset() | 1235289550Szbb (lldb::user_id_t(ref.section() == DIERef::Section::DebugTypes) << 63); 1236289550Szbb} 1237289551Szbb 1238289551Szbbllvm::Optional<SymbolFileDWARF::DecodedUID> 1239289550SzbbSymbolFileDWARF::DecodeUID(lldb::user_id_t uid) { 1240289551Szbb // This method can be called without going through the symbol vendor so we 1241289550Szbb // need to lock the module. 1242289550Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 1243289550Szbb // Anytime we get a "lldb::user_id_t" from an lldb_private::SymbolFile API we 1244289550Szbb // must make sure we use the correct DWARF file when resolving things. On 1245289550Szbb // MacOSX, when using SymbolFileDWARFDebugMap, we will use multiple 1246289550Szbb // SymbolFileDWARF classes, one for each .o file. We can often end up with 1247289550Szbb // references to other DWARF objects and we must be ready to receive a 1248289550Szbb // "lldb::user_id_t" that specifies a DIE from another SymbolFileDWARF 1249289551Szbb // instance. 1250289551Szbb if (SymbolFileDWARFDebugMap *debug_map = GetDebugMapSymfile()) { 1251289550Szbb SymbolFileDWARF *dwarf = debug_map->GetSymbolFileByOSOIndex( 1252289551Szbb debug_map->GetOSOIndexFromUserID(uid)); 1253289550Szbb return DecodedUID{ 1254289550Szbb *dwarf, {llvm::None, DIERef::Section::DebugInfo, dw_offset_t(uid)}}; 1255289550Szbb } 1256289551Szbb dw_offset_t die_offset = uid; 1257289551Szbb if (die_offset == DW_INVALID_OFFSET) 1258289551Szbb return llvm::None; 1259289551Szbb 1260289550Szbb DIERef::Section section = 1261289551Szbb uid >> 63 ? DIERef::Section::DebugTypes : DIERef::Section::DebugInfo; 1262289551Szbb 1263289550Szbb llvm::Optional<uint32_t> dwo_num = uid >> 32 & 0x7fffffff; 1264289550Szbb if (*dwo_num == 0x7fffffff) 1265289550Szbb dwo_num = llvm::None; 1266289551Szbb 1267289550Szbb return DecodedUID{*this, {dwo_num, section, die_offset}}; 1268289551Szbb} 1269289551Szbb 1270289550SzbbDWARFDIE 1271289550SzbbSymbolFileDWARF::GetDIE(lldb::user_id_t uid) { 1272289550Szbb // This method can be called without going through the symbol vendor so we 1273289550Szbb // need to lock the module. 1274289550Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 1275289550Szbb 1276289550Szbb llvm::Optional<DecodedUID> decoded = DecodeUID(uid); 1277289551Szbb 1278289550Szbb if (decoded) 1279289550Szbb return decoded->dwarf.GetDIE(decoded->ref); 1280289551Szbb 1281289551Szbb return DWARFDIE(); 1282289550Szbb} 1283289550Szbb 1284289551SzbbCompilerDecl SymbolFileDWARF::GetDeclForUID(lldb::user_id_t type_uid) { 1285289551Szbb // This method can be called without going through the symbol vendor so we 1286289550Szbb // need to lock the module. 1287289550Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 1288289550Szbb // Anytime we have a lldb::user_id_t, we must get the DIE by calling 1289289551Szbb // SymbolFileDWARF::GetDIE(). See comments inside the 1290289551Szbb // SymbolFileDWARF::GetDIE() for details. 1291289550Szbb if (DWARFDIE die = GetDIE(type_uid)) 1292289550Szbb return die.GetDecl(); 1293289550Szbb return CompilerDecl(); 1294289550Szbb} 1295289550Szbb 1296289550SzbbCompilerDeclContext 1297289550SzbbSymbolFileDWARF::GetDeclContextForUID(lldb::user_id_t type_uid) { 1298289550Szbb // This method can be called without going through the symbol vendor so we 1299289550Szbb // need to lock the module. 1300289551Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 1301289551Szbb // Anytime we have a lldb::user_id_t, we must get the DIE by calling 1302289551Szbb // SymbolFileDWARF::GetDIE(). See comments inside the 1303289550Szbb // SymbolFileDWARF::GetDIE() for details. 1304289550Szbb if (DWARFDIE die = GetDIE(type_uid)) 1305289550Szbb return die.GetDeclContext(); 1306289550Szbb return CompilerDeclContext(); 1307296031Szbb} 1308296031Szbb 1309289550SzbbCompilerDeclContext 1310296031SzbbSymbolFileDWARF::GetDeclContextContainingUID(lldb::user_id_t type_uid) { 1311296031Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 1312289550Szbb // Anytime we have a lldb::user_id_t, we must get the DIE by calling 1313289550Szbb // SymbolFileDWARF::GetDIE(). See comments inside the 1314289550Szbb // SymbolFileDWARF::GetDIE() for details. 1315296031Szbb if (DWARFDIE die = GetDIE(type_uid)) 1316296031Szbb return die.GetContainingDeclContext(); 1317289550Szbb return CompilerDeclContext(); 1318289550Szbb} 1319289550Szbb 1320289550SzbbType *SymbolFileDWARF::ResolveTypeUID(lldb::user_id_t type_uid) { 1321289550Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 1322296031Szbb // Anytime we have a lldb::user_id_t, we must get the DIE by calling 1323296031Szbb // SymbolFileDWARF::GetDIE(). See comments inside the 1324296031Szbb // SymbolFileDWARF::GetDIE() for details. 1325289550Szbb if (DWARFDIE type_die = GetDIE(type_uid)) 1326289550Szbb return type_die.ResolveType(); 1327289550Szbb else 1328296031Szbb return nullptr; 1329296031Szbb} 1330296031Szbb 1331296031Szbbllvm::Optional<SymbolFile::ArrayInfo> 1332296031SzbbSymbolFileDWARF::GetDynamicArrayInfoForUID( 1333296031Szbb lldb::user_id_t type_uid, const lldb_private::ExecutionContext *exe_ctx) { 1334296031Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 1335296031Szbb if (DWARFDIE type_die = GetDIE(type_uid)) 1336296031Szbb return DWARFASTParser::ParseChildArrayInfo(type_die, exe_ctx); 1337296031Szbb else 1338296031Szbb return llvm::None; 1339296031Szbb} 1340289550Szbb 1341289550SzbbType *SymbolFileDWARF::ResolveTypeUID(const DIERef &die_ref) { 1342289550Szbb return ResolveType(GetDIE(die_ref), true); 1343289550Szbb} 1344289550Szbb 1345289550SzbbType *SymbolFileDWARF::ResolveTypeUID(const DWARFDIE &die, 1346289550Szbb bool assert_not_being_parsed) { 1347289550Szbb if (die) { 1348289550Szbb Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); 1349289550Szbb if (log) 1350289550Szbb GetObjectFile()->GetModule()->LogMessage( 1351289550Szbb log, "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s'", 1352289550Szbb die.GetOffset(), die.GetTagAsCString(), die.GetName()); 1353289550Szbb 1354289551Szbb // We might be coming in in the middle of a type tree (a class within a 1355289551Szbb // class, an enum within a class), so parse any needed parent DIEs before 1356289551Szbb // we get to this one... 1357289550Szbb DWARFDIE decl_ctx_die = GetDeclContextDIEContainingDIE(die); 1358289550Szbb if (decl_ctx_die) { 1359289550Szbb if (log) { 1360289551Szbb switch (decl_ctx_die.Tag()) { 1361289550Szbb case DW_TAG_structure_type: 1362289550Szbb case DW_TAG_union_type: 1363289551Szbb case DW_TAG_class_type: { 1364289551Szbb // Get the type, which could be a forward declaration 1365289550Szbb if (log) 1366289550Szbb GetObjectFile()->GetModule()->LogMessage( 1367289550Szbb log, 1368289551Szbb "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' " 1369289550Szbb "resolve parent forward type for 0x%8.8x", 1370289550Szbb die.GetOffset(), die.GetTagAsCString(), die.GetName(), 1371289550Szbb decl_ctx_die.GetOffset()); 1372289550Szbb } break; 1373289550Szbb 1374289550Szbb default: 1375289550Szbb break; 1376289551Szbb } 1377289551Szbb } 1378289550Szbb } 1379289550Szbb return ResolveType(die); 1380289550Szbb } 1381289551Szbb return nullptr; 1382289551Szbb} 1383289551Szbb 1384289550Szbb// This function is used when SymbolFileDWARFDebugMap owns a bunch of 1385289550Szbb// SymbolFileDWARF objects to detect if this DWARF file is the one that can 1386289550Szbb// resolve a compiler_type. 1387289550Szbbbool SymbolFileDWARF::HasForwardDeclForClangType( 1388289550Szbb const CompilerType &compiler_type) { 1389289550Szbb CompilerType compiler_type_no_qualifiers = 1390289550Szbb ClangUtil::RemoveFastQualifiers(compiler_type); 1391289550Szbb if (GetForwardDeclClangTypeToDie().count( 1392289550Szbb compiler_type_no_qualifiers.GetOpaqueQualType())) { 1393289550Szbb return true; 1394289550Szbb } 1395289550Szbb TypeSystem *type_system = compiler_type.GetTypeSystem(); 1396289550Szbb 1397289550Szbb ClangASTContext *clang_type_system = 1398289550Szbb llvm::dyn_cast_or_null<ClangASTContext>(type_system); 1399289550Szbb if (!clang_type_system) 1400289551Szbb return false; 1401289551Szbb DWARFASTParserClang *ast_parser = 1402289550Szbb static_cast<DWARFASTParserClang *>(clang_type_system->GetDWARFParser()); 1403289550Szbb return ast_parser->GetClangASTImporter().CanImport(compiler_type); 1404289550Szbb} 1405289550Szbb 1406289550Szbbbool SymbolFileDWARF::CompleteType(CompilerType &compiler_type) { 1407289550Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 1408289550Szbb 1409289551Szbb ClangASTContext *clang_type_system = 1410289550Szbb llvm::dyn_cast_or_null<ClangASTContext>(compiler_type.GetTypeSystem()); 1411289550Szbb if (clang_type_system) { 1412289550Szbb DWARFASTParserClang *ast_parser = 1413289551Szbb static_cast<DWARFASTParserClang *>(clang_type_system->GetDWARFParser()); 1414289551Szbb if (ast_parser && 1415289550Szbb ast_parser->GetClangASTImporter().CanImport(compiler_type)) 1416289550Szbb return ast_parser->GetClangASTImporter().CompleteType(compiler_type); 1417289550Szbb } 1418289551Szbb 1419289551Szbb // We have a struct/union/class/enum that needs to be fully resolved. 1420289551Szbb CompilerType compiler_type_no_qualifiers = 1421289550Szbb ClangUtil::RemoveFastQualifiers(compiler_type); 1422289550Szbb auto die_it = GetForwardDeclClangTypeToDie().find( 1423289550Szbb compiler_type_no_qualifiers.GetOpaqueQualType()); 1424289550Szbb if (die_it == GetForwardDeclClangTypeToDie().end()) { 1425289550Szbb // We have already resolved this type... 1426289550Szbb return true; 1427289550Szbb } 1428289550Szbb 1429289550Szbb DWARFDIE dwarf_die = GetDIE(die_it->getSecond()); 1430289550Szbb if (dwarf_die) { 1431289550Szbb // Once we start resolving this type, remove it from the forward 1432289550Szbb // declaration map in case anyone child members or other types require this 1433289550Szbb // type to get resolved. The type will get resolved when all of the calls 1434289550Szbb // to SymbolFileDWARF::ResolveClangOpaqueTypeDefinition are done. 1435289550Szbb GetForwardDeclClangTypeToDie().erase(die_it); 1436289550Szbb 1437289550Szbb Type *type = GetDIEToType().lookup(dwarf_die.GetDIE()); 1438289550Szbb 1439289550Szbb Log *log(LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | 1440289550Szbb DWARF_LOG_TYPE_COMPLETION)); 1441289550Szbb if (log) 1442289550Szbb GetObjectFile()->GetModule()->LogMessageVerboseBacktrace( 1443289550Szbb log, "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...", 1444289550Szbb dwarf_die.GetID(), dwarf_die.GetTagAsCString(), 1445289550Szbb type->GetName().AsCString()); 1446289550Szbb assert(compiler_type); 1447289550Szbb DWARFASTParser *dwarf_ast = dwarf_die.GetDWARFParser(); 1448289550Szbb if (dwarf_ast) 1449289551Szbb return dwarf_ast->CompleteTypeFromDWARF(dwarf_die, type, compiler_type); 1450289551Szbb } 1451289550Szbb return false; 1452289550Szbb} 1453289550Szbb 1454289550SzbbType *SymbolFileDWARF::ResolveType(const DWARFDIE &die, 1455289550Szbb bool assert_not_being_parsed, 1456289550Szbb bool resolve_function_context) { 1457289550Szbb if (die) { 1458289551Szbb Type *type = GetTypeForDIE(die, resolve_function_context).get(); 1459289550Szbb 1460289550Szbb if (assert_not_being_parsed) { 1461289550Szbb if (type != DIE_IS_BEING_PARSED) 1462289550Szbb return type; 1463289550Szbb 1464289550Szbb GetObjectFile()->GetModule()->ReportError( 1465289551Szbb "Parsing a die that is being parsed die: 0x%8.8x: %s %s", 1466289551Szbb die.GetOffset(), die.GetTagAsCString(), die.GetName()); 1467289551Szbb 1468289550Szbb } else 1469289550Szbb return type; 1470289550Szbb } 1471289550Szbb return nullptr; 1472289550Szbb} 1473289550Szbb 1474289550SzbbCompileUnit * 1475289550SzbbSymbolFileDWARF::GetCompUnitForDWARFCompUnit(DWARFCompileUnit &dwarf_cu) { 1476289550Szbb // Check if the symbol vendor already knows about this compile unit? 1477289550Szbb if (dwarf_cu.GetUserData() == nullptr) { 1478289551Szbb // The symbol vendor doesn't know about this compile unit, we need to parse 1479289551Szbb // and add it to the symbol vendor object. 1480289550Szbb return ParseCompileUnit(dwarf_cu).get(); 1481289550Szbb } 1482289550Szbb return (CompileUnit *)dwarf_cu.GetUserData(); 1483289550Szbb} 1484289550Szbb 1485289550Szbbsize_t SymbolFileDWARF::GetObjCMethodDIEOffsets(ConstString class_name, 1486289550Szbb DIEArray &method_die_offsets) { 1487289550Szbb method_die_offsets.clear(); 1488289550Szbb m_index->GetObjCMethods(class_name, method_die_offsets); 1489289551Szbb return method_die_offsets.size(); 1490289551Szbb} 1491289550Szbb 1492289550Szbbbool SymbolFileDWARF::GetFunction(const DWARFDIE &die, SymbolContext &sc) { 1493289551Szbb sc.Clear(false); 1494289551Szbb 1495289550Szbb if (die && llvm::isa<DWARFCompileUnit>(die.GetCU())) { 1496289550Szbb // Check if the symbol vendor already knows about this compile unit? 1497289551Szbb sc.comp_unit = 1498289551Szbb GetCompUnitForDWARFCompUnit(llvm::cast<DWARFCompileUnit>(*die.GetCU())); 1499289550Szbb 1500289550Szbb sc.function = sc.comp_unit->FindFunctionByUID(die.GetID()).get(); 1501289550Szbb if (sc.function == nullptr) 1502289551Szbb sc.function = ParseFunction(*sc.comp_unit, die); 1503289551Szbb 1504289550Szbb if (sc.function) { 1505289550Szbb sc.module_sp = sc.function->CalculateSymbolContextModule(); 1506289551Szbb return true; 1507289550Szbb } 1508289550Szbb } 1509289551Szbb 1510289551Szbb return false; 1511289551Szbb} 1512289551Szbb 1513289550Szbblldb::ModuleSP SymbolFileDWARF::GetExternalModule(ConstString name) { 1514289550Szbb UpdateExternalModuleListIfNeeded(); 1515289550Szbb const auto &pos = m_external_type_modules.find(name); 1516289550Szbb if (pos != m_external_type_modules.end()) 1517289550Szbb return pos->second; 1518289550Szbb else 1519289550Szbb return lldb::ModuleSP(); 1520289550Szbb} 1521289550Szbb 1522289550SzbbDWARFDIE 1523289550SzbbSymbolFileDWARF::GetDIE(const DIERef &die_ref) { 1524289550Szbb if (die_ref.dwo_num()) { 1525289550Szbb return DebugInfo() 1526289550Szbb ->GetUnitAtIndex(*die_ref.dwo_num()) 1527289550Szbb ->GetDwoSymbolFile() 1528289550Szbb ->GetDIE(die_ref); 1529289550Szbb } 1530289550Szbb 1531289550Szbb DWARFDebugInfo *debug_info = DebugInfo(); 1532289551Szbb if (debug_info) 1533289551Szbb return debug_info->GetDIE(die_ref); 1534289550Szbb else 1535289550Szbb return DWARFDIE(); 1536289551Szbb} 1537289550Szbb 1538289551Szbb/// Return the DW_AT_(GNU_)dwo_name. 1539289551Szbbstatic const char *GetDWOName(DWARFCompileUnit &dwarf_cu, 1540289551Szbb const DWARFDebugInfoEntry &cu_die) { 1541289551Szbb const char *dwo_name = 1542289551Szbb cu_die.GetAttributeValueAsString(&dwarf_cu, DW_AT_GNU_dwo_name, nullptr); 1543289551Szbb if (!dwo_name) 1544289551Szbb dwo_name = 1545289551Szbb cu_die.GetAttributeValueAsString(&dwarf_cu, DW_AT_dwo_name, nullptr); 1546289551Szbb return dwo_name; 1547289551Szbb} 1548289551Szbb 1549289551Szbb/// Return the DW_AT_(GNU_)dwo_id. 1550289551Szbb/// FIXME: Technically 0 is a valid hash. 1551289551Szbbstatic uint64_t GetDWOId(DWARFCompileUnit &dwarf_cu, 1552289551Szbb const DWARFDebugInfoEntry &cu_die) { 1553289550Szbb uint64_t dwo_id = 1554289550Szbb cu_die.GetAttributeValueAsUnsigned(&dwarf_cu, DW_AT_GNU_dwo_id, 0); 1555289550Szbb if (!dwo_id) 1556289550Szbb dwo_id = cu_die.GetAttributeValueAsUnsigned(&dwarf_cu, DW_AT_dwo_id, 0); 1557289550Szbb return dwo_id; 1558289550Szbb} 1559289550Szbb 1560289550Szbbllvm::Optional<uint64_t> SymbolFileDWARF::GetDWOId() { 1561289550Szbb if (GetNumCompileUnits() == 1) { 1562289550Szbb if (auto comp_unit = GetCompileUnitAtIndex(0)) 1563289550Szbb if (DWARFCompileUnit *cu = llvm::dyn_cast_or_null<DWARFCompileUnit>( 1564289550Szbb GetDWARFCompileUnit(comp_unit.get()))) 1565289550Szbb if (DWARFDebugInfoEntry *cu_die = cu->DIE().GetDIE()) 1566289551Szbb if (uint64_t dwo_id = ::GetDWOId(*cu, *cu_die)) 1567289551Szbb return dwo_id; 1568289550Szbb } 1569289551Szbb return {}; 1570289550Szbb} 1571289550Szbb 1572289550Szbbstd::unique_ptr<SymbolFileDWARFDwo> 1573289550SzbbSymbolFileDWARF::GetDwoSymbolFileForCompileUnit( 1574289550Szbb DWARFUnit &unit, const DWARFDebugInfoEntry &cu_die) { 1575289551Szbb // If this is a Darwin-style debug map (non-.dSYM) symbol file, 1576289550Szbb // never attempt to load ELF-style DWO files since the -gmodules 1577289550Szbb // support uses the same DWO machanism to specify full debug info 1578289550Szbb // files for modules. This is handled in 1579289550Szbb // UpdateExternalModuleListIfNeeded(). 1580289550Szbb if (GetDebugMapSymfile()) 1581289551Szbb return nullptr; 1582289550Szbb 1583289550Szbb DWARFCompileUnit *dwarf_cu = llvm::dyn_cast<DWARFCompileUnit>(&unit); 1584289550Szbb // Only compile units can be split into two parts. 1585289550Szbb if (!dwarf_cu) 1586289550Szbb return nullptr; 1587289551Szbb 1588289550Szbb const char *dwo_name = GetDWOName(*dwarf_cu, cu_die); 1589289550Szbb if (!dwo_name) 1590289550Szbb return nullptr; 1591289551Szbb 1592289551Szbb SymbolFileDWARFDwp *dwp_symfile = GetDwpSymbolFile(); 1593289551Szbb if (dwp_symfile) { 1594289551Szbb uint64_t dwo_id = ::GetDWOId(*dwarf_cu, cu_die); 1595289551Szbb std::unique_ptr<SymbolFileDWARFDwo> dwo_symfile = 1596289551Szbb dwp_symfile->GetSymbolFileForDwoId(*dwarf_cu, dwo_id); 1597289551Szbb if (dwo_symfile) 1598289551Szbb return dwo_symfile; 1599289550Szbb } 1600289550Szbb 1601289551Szbb FileSpec dwo_file(dwo_name); 1602289550Szbb FileSystem::Instance().Resolve(dwo_file); 1603289550Szbb if (dwo_file.IsRelative()) { 1604289551Szbb const char *comp_dir = 1605289551Szbb cu_die.GetAttributeValueAsString(dwarf_cu, DW_AT_comp_dir, nullptr); 1606289550Szbb if (!comp_dir) 1607289550Szbb return nullptr; 1608289550Szbb 1609289551Szbb dwo_file.SetFile(comp_dir, FileSpec::Style::native); 1610289550Szbb FileSystem::Instance().Resolve(dwo_file); 1611289550Szbb dwo_file.AppendPathComponent(dwo_name); 1612289550Szbb } 1613289550Szbb 1614289551Szbb if (!FileSystem::Instance().Exists(dwo_file)) 1615289550Szbb return nullptr; 1616289551Szbb 1617289550Szbb const lldb::offset_t file_offset = 0; 1618289550Szbb DataBufferSP dwo_file_data_sp; 1619289550Szbb lldb::offset_t dwo_file_data_offset = 0; 1620289550Szbb ObjectFileSP dwo_obj_file = ObjectFile::FindPlugin( 1621289550Szbb GetObjectFile()->GetModule(), &dwo_file, file_offset, 1622289550Szbb FileSystem::Instance().GetByteSize(dwo_file), dwo_file_data_sp, 1623289550Szbb dwo_file_data_offset); 1624289550Szbb if (dwo_obj_file == nullptr) 1625289550Szbb return nullptr; 1626289550Szbb 1627289550Szbb return std::make_unique<SymbolFileDWARFDwo>(dwo_obj_file, *dwarf_cu); 1628289551Szbb} 1629289550Szbb 1630289550Szbbvoid SymbolFileDWARF::UpdateExternalModuleListIfNeeded() { 1631289551Szbb if (m_fetched_external_modules) 1632289551Szbb return; 1633289550Szbb m_fetched_external_modules = true; 1634289551Szbb DWARFDebugInfo *debug_info = DebugInfo(); 1635289551Szbb 1636289550Szbb // Follow DWO skeleton unit breadcrumbs. 1637289550Szbb const uint32_t num_compile_units = GetNumCompileUnits(); 1638289551Szbb for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) { 1639289551Szbb auto *dwarf_cu = 1640289551Szbb llvm::dyn_cast<DWARFCompileUnit>(debug_info->GetUnitAtIndex(cu_idx)); 1641289550Szbb if (!dwarf_cu) 1642289550Szbb continue; 1643289551Szbb 1644289551Szbb const DWARFBaseDIE die = dwarf_cu->GetUnitDIEOnly(); 1645289550Szbb if (!die || die.HasChildren() || !die.GetDIE()) 1646289550Szbb continue; 1647289550Szbb 1648289550Szbb const char *name = die.GetAttributeValueAsString(DW_AT_name, nullptr); 1649289550Szbb if (!name) 1650289550Szbb continue; 1651289550Szbb 1652289550Szbb ConstString const_name(name); 1653289550Szbb ModuleSP &module_sp = m_external_type_modules[const_name]; 1654289550Szbb if (module_sp) 1655289550Szbb continue; 1656289550Szbb 1657289550Szbb const char *dwo_path = GetDWOName(*dwarf_cu, *die.GetDIE()); 1658289550Szbb if (!dwo_path) 1659289550Szbb continue; 1660289550Szbb 1661289550Szbb ModuleSpec dwo_module_spec; 1662289550Szbb dwo_module_spec.GetFileSpec().SetFile(dwo_path, FileSpec::Style::native); 1663289550Szbb if (dwo_module_spec.GetFileSpec().IsRelative()) { 1664289550Szbb const char *comp_dir = 1665289550Szbb die.GetAttributeValueAsString(DW_AT_comp_dir, nullptr); 1666289550Szbb if (comp_dir) { 1667289551Szbb dwo_module_spec.GetFileSpec().SetFile(comp_dir, 1668289550Szbb FileSpec::Style::native); 1669289550Szbb FileSystem::Instance().Resolve(dwo_module_spec.GetFileSpec()); 1670289551Szbb dwo_module_spec.GetFileSpec().AppendPathComponent(dwo_path); 1671289551Szbb } 1672289550Szbb } 1673289550Szbb dwo_module_spec.GetArchitecture() = 1674289551Szbb m_objfile_sp->GetModule()->GetArchitecture(); 1675289551Szbb 1676289550Szbb // When LLDB loads "external" modules it looks at the presence of 1677289550Szbb // DW_AT_dwo_name. However, when the already created module 1678289550Szbb // (corresponding to .dwo itself) is being processed, it will see 1679289550Szbb // the presence of DW_AT_dwo_name (which contains the name of dwo 1680297388Szbb // file) and will try to call ModuleList::GetSharedModule 1681289550Szbb // again. In some cases (i.e., for empty files) Clang 4.0 1682289550Szbb // generates a *.dwo file which has DW_AT_dwo_name, but no 1683289550Szbb // DW_AT_comp_dir. In this case the method 1684289551Szbb // ModuleList::GetSharedModule will fail and the warning will be 1685289550Szbb // printed. However, as one can notice in this case we don't 1686289550Szbb // actually need to try to load the already loaded module 1687289550Szbb // (corresponding to .dwo) so we simply skip it. 1688289551Szbb if (m_objfile_sp->GetFileSpec().GetFileNameExtension() == ".dwo" && 1689289551Szbb llvm::StringRef(m_objfile_sp->GetFileSpec().GetPath()) 1690289550Szbb .endswith(dwo_module_spec.GetFileSpec().GetPath())) { 1691289551Szbb continue; 1692297388Szbb } 1693289550Szbb 1694289550Szbb Status error = ModuleList::GetSharedModule(dwo_module_spec, module_sp, 1695289550Szbb nullptr, nullptr, nullptr); 1696289550Szbb if (!module_sp) { 1697289551Szbb GetObjectFile()->GetModule()->ReportWarning( 1698289551Szbb "0x%8.8x: unable to locate module needed for external types: " 1699289550Szbb "%s\nerror: %s\nDebugging will be degraded due to missing " 1700289550Szbb "types. Rebuilding the project will regenerate the needed " 1701289550Szbb "module files.", 1702289551Szbb die.GetOffset(), dwo_module_spec.GetFileSpec().GetPath().c_str(), 1703289550Szbb error.AsCString("unknown error")); 1704289550Szbb continue; 1705289551Szbb } 1706289551Szbb 1707289550Szbb // Verify the DWO hash. 1708289551Szbb // FIXME: Technically "0" is a valid hash. 1709289550Szbb uint64_t dwo_id = ::GetDWOId(*dwarf_cu, *die.GetDIE()); 1710289550Szbb if (!dwo_id) 1711289550Szbb continue; 1712289550Szbb 1713289550Szbb auto *dwo_symfile = 1714289550Szbb llvm::dyn_cast_or_null<SymbolFileDWARF>(module_sp->GetSymbolFile()); 1715289550Szbb if (!dwo_symfile) 1716289550Szbb continue; 1717289551Szbb llvm::Optional<uint64_t> dwo_dwo_id = dwo_symfile->GetDWOId(); 1718289551Szbb if (!dwo_dwo_id) 1719289550Szbb continue; 1720289551Szbb 1721289550Szbb if (dwo_id != dwo_dwo_id) { 1722289550Szbb GetObjectFile()->GetModule()->ReportWarning( 1723289550Szbb "0x%8.8x: Module %s is out-of-date (hash mismatch). Type information " 1724289550Szbb "from this module may be incomplete or inconsistent with the rest of " 1725289550Szbb "the program. Rebuilding the project will regenerate the needed " 1726289550Szbb "module files.", 1727289551Szbb die.GetOffset(), dwo_module_spec.GetFileSpec().GetPath().c_str()); 1728289551Szbb } 1729289550Szbb } 1730289551Szbb} 1731289551Szbb 1732289550SzbbSymbolFileDWARF::GlobalVariableMap &SymbolFileDWARF::GetGlobalAranges() { 1733289550Szbb if (!m_global_aranges_up) { 1734289551Szbb m_global_aranges_up.reset(new GlobalVariableMap()); 1735289550Szbb 1736289550Szbb ModuleSP module_sp = GetObjectFile()->GetModule(); 1737289550Szbb if (module_sp) { 1738289550Szbb const size_t num_cus = module_sp->GetNumCompileUnits(); 1739289550Szbb for (size_t i = 0; i < num_cus; ++i) { 1740289550Szbb CompUnitSP cu_sp = module_sp->GetCompileUnitAtIndex(i); 1741289550Szbb if (cu_sp) { 1742289550Szbb VariableListSP globals_sp = cu_sp->GetVariableList(true); 1743289551Szbb if (globals_sp) { 1744289551Szbb const size_t num_globals = globals_sp->GetSize(); 1745289551Szbb for (size_t g = 0; g < num_globals; ++g) { 1746289551Szbb VariableSP var_sp = globals_sp->GetVariableAtIndex(g); 1747289551Szbb if (var_sp && !var_sp->GetLocationIsConstantValueData()) { 1748289551Szbb const DWARFExpression &location = var_sp->LocationExpression(); 1749289550Szbb Value location_result; 1750289550Szbb Status error; 1751289551Szbb if (location.Evaluate(nullptr, LLDB_INVALID_ADDRESS, nullptr, 1752289550Szbb nullptr, location_result, &error)) { 1753289550Szbb if (location_result.GetValueType() == 1754289551Szbb Value::eValueTypeFileAddress) { 1755289551Szbb lldb::addr_t file_addr = 1756289550Szbb location_result.GetScalar().ULongLong(); 1757289550Szbb lldb::addr_t byte_size = 1; 1758296030Szbb if (var_sp->GetType()) 1759289550Szbb byte_size = 1760289551Szbb var_sp->GetType()->GetByteSize().getValueOr(0); 1761289550Szbb m_global_aranges_up->Append(GlobalVariableMap::Entry( 1762296039Szbb file_addr, byte_size, var_sp.get())); 1763289550Szbb } 1764296030Szbb } 1765296030Szbb } 1766296030Szbb } 1767296039Szbb } 1768296030Szbb } 1769296030Szbb } 1770296030Szbb } 1771289550Szbb m_global_aranges_up->Sort(); 1772296039Szbb } 1773296039Szbb return *m_global_aranges_up; 1774289550Szbb} 1775289551Szbb 1776289550Szbbuint32_t SymbolFileDWARF::ResolveSymbolContext(const Address &so_addr, 1777289550Szbb SymbolContextItem resolve_scope, 1778289550Szbb SymbolContext &sc) { 1779289550Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 1780289550Szbb static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 1781289550Szbb Timer scoped_timer(func_cat, 1782289550Szbb "SymbolFileDWARF::" 1783289550Szbb "ResolveSymbolContext (so_addr = { " 1784289550Szbb "section = %p, offset = 0x%" PRIx64 1785296039Szbb " }, resolve_scope = 0x%8.8x)", 1786296039Szbb static_cast<void *>(so_addr.GetSection().get()), 1787296039Szbb so_addr.GetOffset(), resolve_scope); 1788296039Szbb uint32_t resolved = 0; 1789296039Szbb if (resolve_scope & 1790296039Szbb (eSymbolContextCompUnit | eSymbolContextFunction | eSymbolContextBlock | 1791296039Szbb eSymbolContextLineEntry | eSymbolContextVariable)) { 1792296039Szbb lldb::addr_t file_vm_addr = so_addr.GetFileAddress(); 1793296030Szbb 1794296039Szbb DWARFDebugInfo *debug_info = DebugInfo(); 1795296039Szbb if (debug_info) { 1796296039Szbb llvm::Expected<DWARFDebugAranges &> aranges = 1797296039Szbb debug_info->GetCompileUnitAranges(); 1798296039Szbb if (!aranges) { 1799296039Szbb Log *log = LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO); 1800296039Szbb LLDB_LOG_ERROR(log, aranges.takeError(), 1801296039Szbb "SymbolFileDWARF::ResolveSymbolContext failed to get cu " 1802296039Szbb "aranges. {0}"); 1803296039Szbb return 0; 1804296030Szbb } 1805296030Szbb 1806296030Szbb const dw_offset_t cu_offset = aranges->FindAddress(file_vm_addr); 1807296030Szbb if (cu_offset == DW_INVALID_OFFSET) { 1808296030Szbb // Global variables are not in the compile unit address ranges. The 1809296030Szbb // only way to currently find global variables is to iterate over the 1810296030Szbb // .debug_pubnames or the __apple_names table and find all items in 1811296039Szbb // there that point to DW_TAG_variable DIEs and then find the address 1812296039Szbb // that matches. 1813296039Szbb if (resolve_scope & eSymbolContextVariable) { 1814296030Szbb GlobalVariableMap &map = GetGlobalAranges(); 1815296039Szbb const GlobalVariableMap::Entry *entry = 1816296039Szbb map.FindEntryThatContains(file_vm_addr); 1817296030Szbb if (entry && entry->data) { 1818296030Szbb Variable *variable = entry->data; 1819296030Szbb SymbolContextScope *scc = variable->GetSymbolContextScope(); 1820296030Szbb if (scc) { 1821296030Szbb scc->CalculateSymbolContext(&sc); 1822296030Szbb sc.variable = variable; 1823296030Szbb } 1824296030Szbb return sc.GetResolvedMask(); 1825296030Szbb } 1826296030Szbb } 1827296030Szbb } else { 1828296030Szbb uint32_t cu_idx = DW_INVALID_INDEX; 1829296030Szbb if (auto *dwarf_cu = llvm::dyn_cast_or_null<DWARFCompileUnit>( 1830296030Szbb debug_info->GetUnitAtOffset(DIERef::Section::DebugInfo, 1831296030Szbb cu_offset, &cu_idx))) { 1832296030Szbb sc.comp_unit = GetCompUnitForDWARFCompUnit(*dwarf_cu); 1833296030Szbb if (sc.comp_unit) { 1834296030Szbb resolved |= eSymbolContextCompUnit; 1835296030Szbb 1836296030Szbb bool force_check_line_table = false; 1837296030Szbb if (resolve_scope & 1838296030Szbb (eSymbolContextFunction | eSymbolContextBlock)) { 1839296030Szbb DWARFDIE function_die = dwarf_cu->LookupAddress(file_vm_addr); 1840296030Szbb DWARFDIE block_die; 1841296030Szbb if (function_die) { 1842296030Szbb sc.function = 1843296030Szbb sc.comp_unit->FindFunctionByUID(function_die.GetID()).get(); 1844296030Szbb if (sc.function == nullptr) 1845296030Szbb sc.function = ParseFunction(*sc.comp_unit, function_die); 1846296030Szbb 1847296030Szbb if (sc.function && (resolve_scope & eSymbolContextBlock)) 1848296030Szbb block_die = function_die.LookupDeepestBlock(file_vm_addr); 1849296030Szbb } else { 1850296030Szbb // We might have had a compile unit that had discontiguous 1851296030Szbb // address ranges where the gaps are symbols that don't have 1852296030Szbb // any debug info. Discontiguous compile unit address ranges 1853296030Szbb // should only happen when there aren't other functions from 1854296030Szbb // other compile units in these gaps. This helps keep the size 1855296030Szbb // of the aranges down. 1856296030Szbb force_check_line_table = true; 1857296039Szbb } 1858296039Szbb 1859296030Szbb if (sc.function != nullptr) { 1860296030Szbb resolved |= eSymbolContextFunction; 1861296039Szbb 1862296039Szbb if (resolve_scope & eSymbolContextBlock) { 1863296039Szbb Block &block = sc.function->GetBlock(true); 1864296039Szbb 1865296039Szbb if (block_die) 1866296039Szbb sc.block = block.FindBlockByID(block_die.GetID()); 1867296039Szbb else 1868296039Szbb sc.block = block.FindBlockByID(function_die.GetID()); 1869296039Szbb if (sc.block) 1870296039Szbb resolved |= eSymbolContextBlock; 1871296039Szbb } 1872296039Szbb } 1873296039Szbb } 1874296039Szbb 1875296039Szbb if ((resolve_scope & eSymbolContextLineEntry) || 1876296039Szbb force_check_line_table) { 1877296030Szbb LineTable *line_table = sc.comp_unit->GetLineTable(); 1878296039Szbb if (line_table != nullptr) { 1879296030Szbb // And address that makes it into this function should be in 1880296030Szbb // terms of this debug file if there is no debug map, or it 1881289550Szbb // will be an address in the .o file which needs to be fixed up 1882289550Szbb // to be in terms of the debug map executable. Either way, 1883289551Szbb // calling FixupAddress() will work for us. 1884289551Szbb Address exe_so_addr(so_addr); 1885289550Szbb if (FixupAddress(exe_so_addr)) { 1886289550Szbb if (line_table->FindLineEntryByAddress(exe_so_addr, 1887289550Szbb sc.line_entry)) { 1888289551Szbb resolved |= eSymbolContextLineEntry; 1889289550Szbb } 1890289550Szbb } 1891289550Szbb } 1892289550Szbb } 1893289550Szbb 1894289550Szbb if (force_check_line_table && 1895289550Szbb !(resolved & eSymbolContextLineEntry)) { 1896289550Szbb // We might have had a compile unit that had discontiguous 1897289550Szbb // address ranges where the gaps are symbols that don't have any 1898289550Szbb // debug info. Discontiguous compile unit address ranges should 1899289550Szbb // only happen when there aren't other functions from other 1900289550Szbb // compile units in these gaps. This helps keep the size of the 1901289550Szbb // aranges down. 1902289551Szbb sc.comp_unit = nullptr; 1903297450Szbb resolved &= ~eSymbolContextCompUnit; 1904297450Szbb } 1905289550Szbb } else { 1906289551Szbb GetObjectFile()->GetModule()->ReportWarning( 1907296039Szbb "0x%8.8x: compile unit %u failed to create a valid " 1908289551Szbb "lldb_private::CompileUnit class.", 1909289551Szbb cu_offset, cu_idx); 1910289551Szbb } 1911296039Szbb } 1912289551Szbb } 1913289550Szbb } 1914289551Szbb } 1915289551Szbb return resolved; 1916289551Szbb} 1917289551Szbb 1918289551Szbbuint32_t SymbolFileDWARF::ResolveSymbolContext(const FileSpec &file_spec, 1919289551Szbb uint32_t line, 1920289551Szbb bool check_inlines, 1921289551Szbb SymbolContextItem resolve_scope, 1922297450Szbb SymbolContextList &sc_list) { 1923297450Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 1924289551Szbb const uint32_t prev_size = sc_list.GetSize(); 1925297450Szbb if (resolve_scope & eSymbolContextCompUnit) { 1926297450Szbb for (uint32_t cu_idx = 0, num_cus = GetNumCompileUnits(); cu_idx < num_cus; 1927289551Szbb ++cu_idx) { 1928289550Szbb CompileUnit *dc_cu = ParseCompileUnitAtIndex(cu_idx).get(); 1929289550Szbb if (!dc_cu) 1930289551Szbb continue; 1931296039Szbb 1932297450Szbb bool file_spec_matches_cu_file_spec = 1933296039Szbb FileSpec::Match(file_spec, dc_cu->GetPrimaryFile()); 1934296039Szbb if (check_inlines || file_spec_matches_cu_file_spec) { 1935296039Szbb SymbolContext sc(m_objfile_sp->GetModule()); 1936289550Szbb sc.comp_unit = dc_cu; 1937289551Szbb uint32_t file_idx = UINT32_MAX; 1938289551Szbb 1939289551Szbb // If we are looking for inline functions only and we don't find it 1940289551Szbb // in the support files, we are done. 1941289551Szbb if (check_inlines) { 1942289550Szbb file_idx = 1943289550Szbb sc.comp_unit->GetSupportFiles().FindFileIndex(1, file_spec, true); 1944289550Szbb if (file_idx == UINT32_MAX) 1945289550Szbb continue; 1946297450Szbb } 1947297450Szbb 1948296030Szbb if (line != 0) { 1949297450Szbb LineTable *line_table = sc.comp_unit->GetLineTable(); 1950296030Szbb 1951297450Szbb if (line_table != nullptr && line != 0) { 1952297450Szbb // We will have already looked up the file index if we are 1953297450Szbb // searching for inline entries. 1954297450Szbb if (!check_inlines) 1955296030Szbb file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex( 1956296030Szbb 1, file_spec, true); 1957289550Szbb 1958289550Szbb if (file_idx != UINT32_MAX) { 1959289551Szbb uint32_t found_line; 1960289550Szbb uint32_t line_idx = line_table->FindLineEntryIndexByFileIndex( 1961289551Szbb 0, file_idx, line, false, &sc.line_entry); 1962289551Szbb found_line = sc.line_entry.line; 1963289550Szbb 1964289550Szbb while (line_idx != UINT32_MAX) { 1965289550Szbb sc.function = nullptr; 1966289551Szbb sc.block = nullptr; 1967289550Szbb if (resolve_scope & 1968289551Szbb (eSymbolContextFunction | eSymbolContextBlock)) { 1969289551Szbb const lldb::addr_t file_vm_addr = 1970289550Szbb sc.line_entry.range.GetBaseAddress().GetFileAddress(); 1971289551Szbb if (file_vm_addr != LLDB_INVALID_ADDRESS) { 1972289551Szbb DWARFDIE function_die = 1973289551Szbb GetDWARFCompileUnit(dc_cu)->LookupAddress(file_vm_addr); 1974289550Szbb DWARFDIE block_die; 1975289550Szbb if (function_die) { 1976289551Szbb sc.function = 1977289551Szbb sc.comp_unit->FindFunctionByUID(function_die.GetID()) 1978289550Szbb .get(); 1979289551Szbb if (sc.function == nullptr) 1980289551Szbb sc.function = 1981289550Szbb ParseFunction(*sc.comp_unit, function_die); 1982289551Szbb 1983289550Szbb if (sc.function && (resolve_scope & eSymbolContextBlock)) 1984289550Szbb block_die = 1985289550Szbb function_die.LookupDeepestBlock(file_vm_addr); 1986289551Szbb } 1987289551Szbb 1988289551Szbb if (sc.function != nullptr) { 1989289550Szbb Block &block = sc.function->GetBlock(true); 1990289550Szbb 1991289550Szbb if (block_die) 1992289551Szbb sc.block = block.FindBlockByID(block_die.GetID()); 1993289551Szbb else if (function_die) 1994289551Szbb sc.block = block.FindBlockByID(function_die.GetID()); 1995289551Szbb } 1996289550Szbb } 1997289551Szbb } 1998289551Szbb 1999289551Szbb sc_list.Append(sc); 2000289550Szbb line_idx = line_table->FindLineEntryIndexByFileIndex( 2001289551Szbb line_idx + 1, file_idx, found_line, true, &sc.line_entry); 2002289551Szbb } 2003289550Szbb } 2004289550Szbb } else if (file_spec_matches_cu_file_spec && !check_inlines) { 2005289550Szbb // only append the context if we aren't looking for inline call 2006289551Szbb // sites by file and line and if the file spec matches that of 2007289550Szbb // the compile unit 2008289551Szbb sc_list.Append(sc); 2009289551Szbb } 2010289551Szbb } else if (file_spec_matches_cu_file_spec && !check_inlines) { 2011289551Szbb // only append the context if we aren't looking for inline call 2012289551Szbb // sites by file and line and if the file spec matches that of 2013289550Szbb // the compile unit 2014289550Szbb sc_list.Append(sc); 2015289551Szbb } 2016289551Szbb 2017289551Szbb if (!check_inlines) 2018289550Szbb break; 2019289550Szbb } 2020289550Szbb } 2021289550Szbb } 2022289551Szbb return sc_list.GetSize() - prev_size; 2023289551Szbb} 2024289551Szbb 2025289551Szbbvoid SymbolFileDWARF::PreloadSymbols() { 2026289551Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 2027296030Szbb m_index->Preload(); 2028296030Szbb} 2029296030Szbb 2030296030Szbbstd::recursive_mutex &SymbolFileDWARF::GetModuleMutex() const { 2031297389Szbb lldb::ModuleSP module_sp(m_debug_map_module_wp.lock()); 2032296030Szbb if (module_sp) 2033296030Szbb return module_sp->GetMutex(); 2034296030Szbb return GetObjectFile()->GetModule()->GetMutex(); 2035297389Szbb} 2036297389Szbb 2037297389Szbbbool SymbolFileDWARF::DeclContextMatchesThisSymbolFile( 2038297389Szbb const lldb_private::CompilerDeclContext *decl_ctx) { 2039296030Szbb if (decl_ctx == nullptr || !decl_ctx->IsValid()) { 2040296030Szbb // Invalid namespace decl which means we aren't matching only things in 2041297389Szbb // this symbol file, so return true to indicate it matches this symbol 2042297389Szbb // file. 2043297389Szbb return true; 2044297389Szbb } 2045297389Szbb 2046297389Szbb TypeSystem *decl_ctx_type_system = decl_ctx->GetTypeSystem(); 2047297389Szbb auto type_system_or_err = GetTypeSystemForLanguage( 2048296030Szbb decl_ctx_type_system->GetMinimumLanguage(nullptr)); 2049296030Szbb if (auto err = type_system_or_err.takeError()) { 2050289551Szbb LLDB_LOG_ERROR(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), 2051289551Szbb std::move(err), 2052289551Szbb "Unable to match namespace decl using TypeSystem"); 2053289550Szbb return false; 2054289550Szbb } 2055289550Szbb 2056289551Szbb if (decl_ctx_type_system == &type_system_or_err.get()) 2057289551Szbb return true; // The type systems match, return true 2058289550Szbb 2059289551Szbb // The namespace AST was valid, and it does not match... 2060289550Szbb Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 2061289550Szbb 2062289550Szbb if (log) 2063289550Szbb GetObjectFile()->GetModule()->LogMessage( 2064289550Szbb log, "Valid namespace does not match symbol file"); 2065289551Szbb 2066289550Szbb return false; 2067289550Szbb} 2068289551Szbb 2069289550Szbbvoid SymbolFileDWARF::FindGlobalVariables( 2070289550Szbb ConstString name, const CompilerDeclContext *parent_decl_ctx, 2071289551Szbb uint32_t max_matches, VariableList &variables) { 2072289550Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 2073289550Szbb Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 2074289551Szbb 2075289550Szbb if (log) 2076289550Szbb GetObjectFile()->GetModule()->LogMessage( 2077289551Szbb log, 2078289550Szbb "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", " 2079289550Szbb "parent_decl_ctx=%p, max_matches=%u, variables)", 2080289551Szbb name.GetCString(), static_cast<const void *>(parent_decl_ctx), 2081289550Szbb max_matches); 2082289550Szbb 2083289551Szbb if (!DeclContextMatchesThisSymbolFile(parent_decl_ctx)) 2084289550Szbb return; 2085289550Szbb 2086289551Szbb DWARFDebugInfo *info = DebugInfo(); 2087289550Szbb if (!info) 2088289550Szbb return; 2089289550Szbb 2090289550Szbb // Remember how many variables are in the list before we search. 2091289550Szbb const uint32_t original_size = variables.GetSize(); 2092289550Szbb 2093289550Szbb llvm::StringRef basename; 2094289550Szbb llvm::StringRef context; 2095289551Szbb bool name_is_mangled = (bool)Mangled(name); 2096289551Szbb 2097289550Szbb if (!CPlusPlusLanguage::ExtractContextAndIdentifier(name.GetCString(), 2098289551Szbb context, basename)) 2099289550Szbb basename = name.GetStringRef(); 2100289550Szbb 2101289550Szbb DIEArray die_offsets; 2102289551Szbb m_index->GetGlobalVariables(ConstString(basename), die_offsets); 2103289550Szbb const size_t num_die_matches = die_offsets.size(); 2104289550Szbb if (num_die_matches) { 2105289551Szbb SymbolContext sc; 2106289550Szbb sc.module_sp = m_objfile_sp->GetModule(); 2107289550Szbb assert(sc.module_sp); 2108289551Szbb 2109289550Szbb // Loop invariant: Variables up to this index have been checked for context 2110289550Szbb // matches. 2111289551Szbb uint32_t pruned_idx = original_size; 2112289550Szbb 2113289550Szbb bool done = false; 2114289551Szbb for (size_t i = 0; i < num_die_matches && !done; ++i) { 2115289550Szbb const DIERef &die_ref = die_offsets[i]; 2116289550Szbb DWARFDIE die = GetDIE(die_ref); 2117289551Szbb 2118289550Szbb if (die) { 2119289550Szbb switch (die.Tag()) { 2120289551Szbb default: 2121289550Szbb case DW_TAG_subprogram: 2122289550Szbb case DW_TAG_inlined_subroutine: 2123289551Szbb case DW_TAG_try_block: 2124289550Szbb case DW_TAG_catch_block: 2125289550Szbb break; 2126289550Szbb 2127289550Szbb case DW_TAG_variable: { 2128289550Szbb auto *dwarf_cu = llvm::dyn_cast<DWARFCompileUnit>(die.GetCU()); 2129289550Szbb if (!dwarf_cu) 2130289550Szbb continue; 2131289550Szbb sc.comp_unit = GetCompUnitForDWARFCompUnit(*dwarf_cu); 2132289551Szbb 2133289551Szbb if (parent_decl_ctx) { 2134289550Szbb DWARFASTParser *dwarf_ast = die.GetDWARFParser(); 2135289551Szbb if (dwarf_ast) { 2136289550Szbb CompilerDeclContext actual_parent_decl_ctx = 2137289550Szbb dwarf_ast->GetDeclContextContainingUIDFromDWARF(die); 2138289550Szbb if (!actual_parent_decl_ctx || 2139289551Szbb actual_parent_decl_ctx != *parent_decl_ctx) 2140289550Szbb continue; 2141289550Szbb } 2142289551Szbb } 2143289550Szbb 2144289550Szbb ParseVariables(sc, die, LLDB_INVALID_ADDRESS, false, false, 2145289551Szbb &variables); 2146289550Szbb while (pruned_idx < variables.GetSize()) { 2147289550Szbb VariableSP var_sp = variables.GetVariableAtIndex(pruned_idx); 2148289551Szbb if (name_is_mangled || 2149289550Szbb var_sp->GetName().GetStringRef().contains(name.GetStringRef())) 2150289550Szbb ++pruned_idx; 2151289551Szbb else 2152289550Szbb variables.RemoveVariableAtIndex(pruned_idx); 2153289550Szbb } 2154289551Szbb 2155289550Szbb if (variables.GetSize() - original_size >= max_matches) 2156289550Szbb done = true; 2157289551Szbb } break; 2158289550Szbb } 2159289550Szbb } else { 2160289551Szbb m_index->ReportInvalidDIERef(die_ref, name.GetStringRef()); 2161289550Szbb } 2162289550Szbb } 2163289550Szbb } 2164289550Szbb 2165289550Szbb // Return the number of variable that were appended to the list 2166289550Szbb const uint32_t num_matches = variables.GetSize() - original_size; 2167289550Szbb if (log && num_matches > 0) { 2168289550Szbb GetObjectFile()->GetModule()->LogMessage( 2169289551Szbb log, 2170289551Szbb "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", " 2171289550Szbb "parent_decl_ctx=%p, max_matches=%u, variables) => %u", 2172289551Szbb name.GetCString(), static_cast<const void *>(parent_decl_ctx), 2173289551Szbb max_matches, num_matches); 2174289550Szbb } 2175289550Szbb} 2176289550Szbb 2177289550Szbbvoid SymbolFileDWARF::FindGlobalVariables(const RegularExpression ®ex, 2178289550Szbb uint32_t max_matches, 2179289551Szbb VariableList &variables) { 2180289550Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 2181289550Szbb Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 2182289551Szbb 2183289550Szbb if (log) { 2184289550Szbb GetObjectFile()->GetModule()->LogMessage( 2185289551Szbb log, 2186289550Szbb "SymbolFileDWARF::FindGlobalVariables (regex=\"%s\", " 2187289550Szbb "max_matches=%u, variables)", 2188289550Szbb regex.GetText().str().c_str(), max_matches); 2189289550Szbb } 2190289550Szbb 2191289550Szbb DWARFDebugInfo *info = DebugInfo(); 2192289550Szbb if (!info) 2193289550Szbb return; 2194289550Szbb 2195289550Szbb // Remember how many variables are in the list before we search. 2196289550Szbb const uint32_t original_size = variables.GetSize(); 2197289550Szbb 2198289550Szbb DIEArray die_offsets; 2199289550Szbb m_index->GetGlobalVariables(regex, die_offsets); 2200289551Szbb 2201289550Szbb SymbolContext sc; 2202289550Szbb sc.module_sp = m_objfile_sp->GetModule(); 2203289550Szbb assert(sc.module_sp); 2204289550Szbb 2205289550Szbb const size_t num_matches = die_offsets.size(); 2206289550Szbb if (num_matches) { 2207289550Szbb for (size_t i = 0; i < num_matches; ++i) { 2208289551Szbb const DIERef &die_ref = die_offsets[i]; 2209289551Szbb DWARFDIE die = GetDIE(die_ref); 2210289550Szbb 2211289550Szbb if (die) { 2212289550Szbb DWARFCompileUnit *dwarf_cu = 2213289550Szbb llvm::dyn_cast<DWARFCompileUnit>(die.GetCU()); 2214289550Szbb if (!dwarf_cu) 2215289550Szbb continue; 2216289550Szbb sc.comp_unit = GetCompUnitForDWARFCompUnit(*dwarf_cu); 2217289550Szbb 2218289550Szbb ParseVariables(sc, die, LLDB_INVALID_ADDRESS, false, false, &variables); 2219289550Szbb 2220289550Szbb if (variables.GetSize() - original_size >= max_matches) 2221289550Szbb break; 2222289551Szbb } else 2223289551Szbb m_index->ReportInvalidDIERef(die_ref, regex.GetText()); 2224289550Szbb } 2225289550Szbb } 2226289550Szbb} 2227289550Szbb 2228289550Szbbbool SymbolFileDWARF::ResolveFunction(const DWARFDIE &orig_die, 2229289550Szbb bool include_inlines, 2230289550Szbb SymbolContextList &sc_list) { 2231289550Szbb SymbolContext sc; 2232289550Szbb 2233289550Szbb if (!orig_die) 2234289550Szbb return false; 2235289550Szbb 2236289550Szbb // If we were passed a die that is not a function, just return false... 2237289551Szbb if (!(orig_die.Tag() == DW_TAG_subprogram || 2238289551Szbb (include_inlines && orig_die.Tag() == DW_TAG_inlined_subroutine))) 2239289551Szbb return false; 2240289550Szbb 2241289550Szbb DWARFDIE die = orig_die; 2242289550Szbb DWARFDIE inlined_die; 2243289550Szbb if (die.Tag() == DW_TAG_inlined_subroutine) { 2244289550Szbb inlined_die = die; 2245289550Szbb 2246289551Szbb while (true) { 2247289550Szbb die = die.GetParent(); 2248289550Szbb 2249289550Szbb if (die) { 2250289550Szbb if (die.Tag() == DW_TAG_subprogram) 2251289550Szbb break; 2252289550Szbb } else 2253289550Szbb break; 2254289550Szbb } 2255289550Szbb } 2256289550Szbb assert(die && die.Tag() == DW_TAG_subprogram); 2257289550Szbb if (GetFunction(die, sc)) { 2258289550Szbb Address addr; 2259289550Szbb // Parse all blocks if needed 2260289550Szbb if (inlined_die) { 2261289550Szbb Block &function_block = sc.function->GetBlock(true); 2262289550Szbb sc.block = function_block.FindBlockByID(inlined_die.GetID()); 2263289550Szbb if (sc.block == nullptr) 2264289550Szbb sc.block = function_block.FindBlockByID(inlined_die.GetOffset()); 2265289550Szbb if (sc.block == nullptr || !sc.block->GetStartAddress(addr)) 2266289550Szbb addr.Clear(); 2267289550Szbb } else { 2268289550Szbb sc.block = nullptr; 2269289550Szbb addr = sc.function->GetAddressRange().GetBaseAddress(); 2270289550Szbb } 2271289550Szbb 2272289550Szbb 2273289550Szbb if (auto section_sp = addr.GetSection()) { 2274289550Szbb if (section_sp->GetPermissions() & ePermissionsExecutable) { 2275289550Szbb sc_list.Append(sc); 2276289550Szbb return true; 2277289550Szbb } 2278289550Szbb } 2279289550Szbb } 2280289550Szbb 2281289550Szbb return false; 2282289550Szbb} 2283289550Szbb 2284289550Szbbbool SymbolFileDWARF::DIEInDeclContext(const CompilerDeclContext *decl_ctx, 2285289550Szbb const DWARFDIE &die) { 2286289550Szbb // If we have no parent decl context to match this DIE matches, and if the 2287289550Szbb // parent decl context isn't valid, we aren't trying to look for any 2288289550Szbb // particular decl context so any die matches. 2289289550Szbb if (decl_ctx == nullptr || !decl_ctx->IsValid()) 2290289550Szbb return true; 2291289550Szbb 2292289550Szbb if (die) { 2293289550Szbb DWARFASTParser *dwarf_ast = die.GetDWARFParser(); 2294289550Szbb if (dwarf_ast) { 2295289550Szbb CompilerDeclContext actual_decl_ctx = 2296289550Szbb dwarf_ast->GetDeclContextContainingUIDFromDWARF(die); 2297289550Szbb if (actual_decl_ctx) 2298289550Szbb return decl_ctx->IsContainedInLookup(actual_decl_ctx); 2299289550Szbb } 2300289550Szbb } 2301289550Szbb return false; 2302289550Szbb} 2303289550Szbb 2304289550Szbbvoid SymbolFileDWARF::FindFunctions(ConstString name, 2305289550Szbb const CompilerDeclContext *parent_decl_ctx, 2306289550Szbb FunctionNameType name_type_mask, 2307289550Szbb bool include_inlines, 2308289550Szbb SymbolContextList &sc_list) { 2309289550Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 2310289550Szbb static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 2311289550Szbb Timer scoped_timer(func_cat, "SymbolFileDWARF::FindFunctions (name = '%s')", 2312289550Szbb name.AsCString()); 2313289550Szbb 2314289550Szbb // eFunctionNameTypeAuto should be pre-resolved by a call to 2315289550Szbb // Module::LookupInfo::LookupInfo() 2316289550Szbb assert((name_type_mask & eFunctionNameTypeAuto) == 0); 2317289550Szbb 2318289550Szbb Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 2319289550Szbb 2320289550Szbb if (log) { 2321289550Szbb GetObjectFile()->GetModule()->LogMessage( 2322289550Szbb log, 2323289550Szbb "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, sc_list)", 2324289551Szbb name.GetCString(), name_type_mask); 2325289550Szbb } 2326289550Szbb 2327289550Szbb if (!DeclContextMatchesThisSymbolFile(parent_decl_ctx)) 2328289551Szbb return; 2329289551Szbb 2330289551Szbb // If name is empty then we won't find anything. 2331289550Szbb if (name.IsEmpty()) 2332289550Szbb return; 2333289550Szbb 2334289550Szbb // Remember how many sc_list are in the list before we search in case we are 2335289550Szbb // appending the results to a variable list. 2336289550Szbb 2337289551Szbb const uint32_t original_size = sc_list.GetSize(); 2338289550Szbb 2339289550Szbb llvm::DenseSet<const DWARFDebugInfoEntry *> resolved_dies; 2340289550Szbb DIEArray offsets; 2341289550Szbb CompilerDeclContext empty_decl_ctx; 2342289550Szbb if (!parent_decl_ctx) 2343289550Szbb parent_decl_ctx = &empty_decl_ctx; 2344289550Szbb 2345289550Szbb std::vector<DWARFDIE> dies; 2346289550Szbb m_index->GetFunctions(name, *this, *parent_decl_ctx, name_type_mask, dies); 2347289550Szbb for (const DWARFDIE &die : dies) { 2348289550Szbb if (resolved_dies.insert(die.GetDIE()).second) 2349289550Szbb ResolveFunction(die, include_inlines, sc_list); 2350289550Szbb } 2351289550Szbb 2352289550Szbb // Return the number of variable that were appended to the list 2353289550Szbb const uint32_t num_matches = sc_list.GetSize() - original_size; 2354289550Szbb 2355289550Szbb if (log && num_matches > 0) { 2356289550Szbb GetObjectFile()->GetModule()->LogMessage( 2357289550Szbb log, 2358289550Szbb "SymbolFileDWARF::FindFunctions (name=\"%s\", " 2359289550Szbb "name_type_mask=0x%x, include_inlines=%d, sc_list) => %u", 2360289550Szbb name.GetCString(), name_type_mask, include_inlines, 2361289550Szbb num_matches); 2362289550Szbb } 2363289550Szbb} 2364289550Szbb 2365289550Szbbvoid SymbolFileDWARF::FindFunctions(const RegularExpression ®ex, 2366289550Szbb bool include_inlines, 2367289550Szbb SymbolContextList &sc_list) { 2368289550Szbb std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 2369289550Szbb static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 2370289550Szbb Timer scoped_timer(func_cat, "SymbolFileDWARF::FindFunctions (regex = '%s')", 2371289550Szbb regex.GetText().str().c_str()); 2372289550Szbb 2373289550Szbb Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 2374289550Szbb 2375289550Szbb if (log) { 2376289550Szbb GetObjectFile()->GetModule()->LogMessage( 2377289550Szbb log, "SymbolFileDWARF::FindFunctions (regex=\"%s\", sc_list)", 2378289550Szbb regex.GetText().str().c_str()); 2379289551Szbb } 2380289550Szbb 2381 DWARFDebugInfo *info = DebugInfo(); 2382 if (!info) 2383 return; 2384 2385 DIEArray offsets; 2386 m_index->GetFunctions(regex, offsets); 2387 2388 llvm::DenseSet<const DWARFDebugInfoEntry *> resolved_dies; 2389 for (DIERef ref : offsets) { 2390 DWARFDIE die = info->GetDIE(ref); 2391 if (!die) { 2392 m_index->ReportInvalidDIERef(ref, regex.GetText()); 2393 continue; 2394 } 2395 if (resolved_dies.insert(die.GetDIE()).second) 2396 ResolveFunction(die, include_inlines, sc_list); 2397 } 2398} 2399 2400void SymbolFileDWARF::GetMangledNamesForFunction( 2401 const std::string &scope_qualified_name, 2402 std::vector<ConstString> &mangled_names) { 2403 DWARFDebugInfo *info = DebugInfo(); 2404 uint32_t num_comp_units = 0; 2405 if (info) 2406 num_comp_units = info->GetNumUnits(); 2407 2408 for (uint32_t i = 0; i < num_comp_units; i++) { 2409 DWARFUnit *cu = info->GetUnitAtIndex(i); 2410 if (cu == nullptr) 2411 continue; 2412 2413 SymbolFileDWARFDwo *dwo = cu->GetDwoSymbolFile(); 2414 if (dwo) 2415 dwo->GetMangledNamesForFunction(scope_qualified_name, mangled_names); 2416 } 2417 2418 for (lldb::user_id_t uid : 2419 m_function_scope_qualified_name_map.lookup(scope_qualified_name)) { 2420 DWARFDIE die = GetDIE(uid); 2421 mangled_names.push_back(ConstString(die.GetMangledName())); 2422 } 2423} 2424 2425void SymbolFileDWARF::FindTypes( 2426 ConstString name, const CompilerDeclContext *parent_decl_ctx, 2427 uint32_t max_matches, 2428 llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files, 2429 TypeMap &types) { 2430 std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 2431 // Make sure we haven't already searched this SymbolFile before. 2432 if (!searched_symbol_files.insert(this).second) 2433 return; 2434 2435 DWARFDebugInfo *info = DebugInfo(); 2436 if (!info) 2437 return; 2438 2439 Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 2440 2441 if (log) { 2442 if (parent_decl_ctx) 2443 GetObjectFile()->GetModule()->LogMessage( 2444 log, 2445 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", parent_decl_ctx = " 2446 "%p (\"%s\"), max_matches=%u, type_list)", 2447 name.GetCString(), static_cast<const void *>(parent_decl_ctx), 2448 parent_decl_ctx->GetName().AsCString("<NULL>"), max_matches); 2449 else 2450 GetObjectFile()->GetModule()->LogMessage( 2451 log, 2452 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", parent_decl_ctx = " 2453 "NULL, max_matches=%u, type_list)", 2454 name.GetCString(), max_matches); 2455 } 2456 2457 if (!DeclContextMatchesThisSymbolFile(parent_decl_ctx)) 2458 return; 2459 2460 DIEArray die_offsets; 2461 m_index->GetTypes(name, die_offsets); 2462 const size_t num_die_matches = die_offsets.size(); 2463 2464 for (size_t i = 0; i < num_die_matches; ++i) { 2465 const DIERef &die_ref = die_offsets[i]; 2466 DWARFDIE die = GetDIE(die_ref); 2467 if (die) { 2468 if (!DIEInDeclContext(parent_decl_ctx, die)) 2469 continue; // The containing decl contexts don't match 2470 2471 Type *matching_type = ResolveType(die, true, true); 2472 if (matching_type) { 2473 // We found a type pointer, now find the shared pointer form our type 2474 // list 2475 types.InsertUnique(matching_type->shared_from_this()); 2476 if (types.GetSize() >= max_matches) 2477 break; 2478 } 2479 } else { 2480 m_index->ReportInvalidDIERef(die_ref, name.GetStringRef()); 2481 } 2482 } 2483 2484 // Next search through the reachable Clang modules. This only applies for 2485 // DWARF objects compiled with -gmodules that haven't been processed by 2486 // dsymutil. 2487 if (num_die_matches < max_matches) { 2488 UpdateExternalModuleListIfNeeded(); 2489 2490 for (const auto &pair : m_external_type_modules) 2491 if (ModuleSP external_module_sp = pair.second) 2492 if (SymbolFile *sym_file = external_module_sp->GetSymbolFile()) 2493 sym_file->FindTypes(name, parent_decl_ctx, max_matches, 2494 searched_symbol_files, types); 2495 } 2496 2497 if (log && types.GetSize()) { 2498 if (parent_decl_ctx) { 2499 GetObjectFile()->GetModule()->LogMessage( 2500 log, 2501 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", parent_decl_ctx " 2502 "= %p (\"%s\"), max_matches=%u, type_list) => %u", 2503 name.GetCString(), static_cast<const void *>(parent_decl_ctx), 2504 parent_decl_ctx->GetName().AsCString("<NULL>"), max_matches, 2505 types.GetSize()); 2506 } else { 2507 GetObjectFile()->GetModule()->LogMessage( 2508 log, 2509 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", parent_decl_ctx " 2510 "= NULL, max_matches=%u, type_list) => %u", 2511 name.GetCString(), max_matches, types.GetSize()); 2512 } 2513 } 2514} 2515 2516void SymbolFileDWARF::FindTypes( 2517 llvm::ArrayRef<CompilerContext> pattern, LanguageSet languages, 2518 llvm::DenseSet<SymbolFile *> &searched_symbol_files, TypeMap &types) { 2519 // Make sure we haven't already searched this SymbolFile before. 2520 if (!searched_symbol_files.insert(this).second) 2521 return; 2522 2523 std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 2524 if (pattern.empty()) 2525 return; 2526 2527 ConstString name = pattern.back().name; 2528 2529 if (!name) 2530 return; 2531 2532 DIEArray die_offsets; 2533 m_index->GetTypes(name, die_offsets); 2534 const size_t num_die_matches = die_offsets.size(); 2535 2536 for (size_t i = 0; i < num_die_matches; ++i) { 2537 const DIERef &die_ref = die_offsets[i]; 2538 DWARFDIE die = GetDIE(die_ref); 2539 2540 if (!die) { 2541 m_index->ReportInvalidDIERef(die_ref, name.GetStringRef()); 2542 continue; 2543 } 2544 if (!languages[die.GetCU()->GetLanguageType()]) 2545 continue; 2546 2547 llvm::SmallVector<CompilerContext, 4> die_context; 2548 die.GetDeclContext(die_context); 2549 if (!contextMatches(die_context, pattern)) 2550 continue; 2551 2552 if (Type *matching_type = ResolveType(die, true, true)) { 2553 // We found a type pointer, now find the shared pointer form our type 2554 // list. 2555 types.InsertUnique(matching_type->shared_from_this()); 2556 } 2557 } 2558 2559 // Next search through the reachable Clang modules. This only applies for 2560 // DWARF objects compiled with -gmodules that haven't been processed by 2561 // dsymutil. 2562 UpdateExternalModuleListIfNeeded(); 2563 2564 for (const auto &pair : m_external_type_modules) 2565 if (ModuleSP external_module_sp = pair.second) 2566 external_module_sp->FindTypes(pattern, languages, searched_symbol_files, 2567 types); 2568} 2569 2570CompilerDeclContext 2571SymbolFileDWARF::FindNamespace(ConstString name, 2572 const CompilerDeclContext *parent_decl_ctx) { 2573 std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 2574 Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); 2575 2576 if (log) { 2577 GetObjectFile()->GetModule()->LogMessage( 2578 log, "SymbolFileDWARF::FindNamespace (sc, name=\"%s\")", 2579 name.GetCString()); 2580 } 2581 2582 CompilerDeclContext namespace_decl_ctx; 2583 2584 if (!DeclContextMatchesThisSymbolFile(parent_decl_ctx)) 2585 return namespace_decl_ctx; 2586 2587 DWARFDebugInfo *info = DebugInfo(); 2588 if (info) { 2589 DIEArray die_offsets; 2590 m_index->GetNamespaces(name, die_offsets); 2591 const size_t num_matches = die_offsets.size(); 2592 if (num_matches) { 2593 for (size_t i = 0; i < num_matches; ++i) { 2594 const DIERef &die_ref = die_offsets[i]; 2595 DWARFDIE die = GetDIE(die_ref); 2596 2597 if (die) { 2598 if (!DIEInDeclContext(parent_decl_ctx, die)) 2599 continue; // The containing decl contexts don't match 2600 2601 DWARFASTParser *dwarf_ast = die.GetDWARFParser(); 2602 if (dwarf_ast) { 2603 namespace_decl_ctx = dwarf_ast->GetDeclContextForUIDFromDWARF(die); 2604 if (namespace_decl_ctx) 2605 break; 2606 } 2607 } else { 2608 m_index->ReportInvalidDIERef(die_ref, name.GetStringRef()); 2609 } 2610 } 2611 } 2612 } 2613 if (log && namespace_decl_ctx) { 2614 GetObjectFile()->GetModule()->LogMessage( 2615 log, 2616 "SymbolFileDWARF::FindNamespace (sc, name=\"%s\") => " 2617 "CompilerDeclContext(%p/%p) \"%s\"", 2618 name.GetCString(), 2619 static_cast<const void *>(namespace_decl_ctx.GetTypeSystem()), 2620 static_cast<const void *>(namespace_decl_ctx.GetOpaqueDeclContext()), 2621 namespace_decl_ctx.GetName().AsCString("<NULL>")); 2622 } 2623 2624 return namespace_decl_ctx; 2625} 2626 2627TypeSP SymbolFileDWARF::GetTypeForDIE(const DWARFDIE &die, 2628 bool resolve_function_context) { 2629 TypeSP type_sp; 2630 if (die) { 2631 Type *type_ptr = GetDIEToType().lookup(die.GetDIE()); 2632 if (type_ptr == nullptr) { 2633 SymbolContextScope *scope; 2634 if (auto *dwarf_cu = llvm::dyn_cast<DWARFCompileUnit>(die.GetCU())) 2635 scope = GetCompUnitForDWARFCompUnit(*dwarf_cu); 2636 else 2637 scope = GetObjectFile()->GetModule().get(); 2638 assert(scope); 2639 SymbolContext sc(scope); 2640 const DWARFDebugInfoEntry *parent_die = die.GetParent().GetDIE(); 2641 while (parent_die != nullptr) { 2642 if (parent_die->Tag() == DW_TAG_subprogram) 2643 break; 2644 parent_die = parent_die->GetParent(); 2645 } 2646 SymbolContext sc_backup = sc; 2647 if (resolve_function_context && parent_die != nullptr && 2648 !GetFunction(DWARFDIE(die.GetCU(), parent_die), sc)) 2649 sc = sc_backup; 2650 2651 type_sp = ParseType(sc, die, nullptr); 2652 } else if (type_ptr != DIE_IS_BEING_PARSED) { 2653 // Grab the existing type from the master types lists 2654 type_sp = type_ptr->shared_from_this(); 2655 } 2656 } 2657 return type_sp; 2658} 2659 2660DWARFDIE 2661SymbolFileDWARF::GetDeclContextDIEContainingDIE(const DWARFDIE &orig_die) { 2662 if (orig_die) { 2663 DWARFDIE die = orig_die; 2664 2665 while (die) { 2666 // If this is the original DIE that we are searching for a declaration 2667 // for, then don't look in the cache as we don't want our own decl 2668 // context to be our decl context... 2669 if (orig_die != die) { 2670 switch (die.Tag()) { 2671 case DW_TAG_compile_unit: 2672 case DW_TAG_partial_unit: 2673 case DW_TAG_namespace: 2674 case DW_TAG_structure_type: 2675 case DW_TAG_union_type: 2676 case DW_TAG_class_type: 2677 case DW_TAG_lexical_block: 2678 case DW_TAG_subprogram: 2679 return die; 2680 case DW_TAG_inlined_subroutine: { 2681 DWARFDIE abs_die = die.GetReferencedDIE(DW_AT_abstract_origin); 2682 if (abs_die) { 2683 return abs_die; 2684 } 2685 break; 2686 } 2687 default: 2688 break; 2689 } 2690 } 2691 2692 DWARFDIE spec_die = die.GetReferencedDIE(DW_AT_specification); 2693 if (spec_die) { 2694 DWARFDIE decl_ctx_die = GetDeclContextDIEContainingDIE(spec_die); 2695 if (decl_ctx_die) 2696 return decl_ctx_die; 2697 } 2698 2699 DWARFDIE abs_die = die.GetReferencedDIE(DW_AT_abstract_origin); 2700 if (abs_die) { 2701 DWARFDIE decl_ctx_die = GetDeclContextDIEContainingDIE(abs_die); 2702 if (decl_ctx_die) 2703 return decl_ctx_die; 2704 } 2705 2706 die = die.GetParent(); 2707 } 2708 } 2709 return DWARFDIE(); 2710} 2711 2712Symbol *SymbolFileDWARF::GetObjCClassSymbol(ConstString objc_class_name) { 2713 Symbol *objc_class_symbol = nullptr; 2714 if (m_objfile_sp) { 2715 Symtab *symtab = m_objfile_sp->GetSymtab(); 2716 if (symtab) { 2717 objc_class_symbol = symtab->FindFirstSymbolWithNameAndType( 2718 objc_class_name, eSymbolTypeObjCClass, Symtab::eDebugNo, 2719 Symtab::eVisibilityAny); 2720 } 2721 } 2722 return objc_class_symbol; 2723} 2724 2725// Some compilers don't emit the DW_AT_APPLE_objc_complete_type attribute. If 2726// they don't then we can end up looking through all class types for a complete 2727// type and never find the full definition. We need to know if this attribute 2728// is supported, so we determine this here and cache th result. We also need to 2729// worry about the debug map 2730// DWARF file 2731// if we are doing darwin DWARF in .o file debugging. 2732bool SymbolFileDWARF::Supports_DW_AT_APPLE_objc_complete_type(DWARFUnit *cu) { 2733 if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate) { 2734 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo; 2735 if (cu && cu->Supports_DW_AT_APPLE_objc_complete_type()) 2736 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; 2737 else { 2738 DWARFDebugInfo *debug_info = DebugInfo(); 2739 const uint32_t num_compile_units = GetNumCompileUnits(); 2740 for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) { 2741 DWARFUnit *dwarf_cu = debug_info->GetUnitAtIndex(cu_idx); 2742 if (dwarf_cu != cu && 2743 dwarf_cu->Supports_DW_AT_APPLE_objc_complete_type()) { 2744 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; 2745 break; 2746 } 2747 } 2748 } 2749 if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolNo && 2750 GetDebugMapSymfile()) 2751 return m_debug_map_symfile->Supports_DW_AT_APPLE_objc_complete_type(this); 2752 } 2753 return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes; 2754} 2755 2756// This function can be used when a DIE is found that is a forward declaration 2757// DIE and we want to try and find a type that has the complete definition. 2758TypeSP SymbolFileDWARF::FindCompleteObjCDefinitionTypeForDIE( 2759 const DWARFDIE &die, ConstString type_name, bool must_be_implementation) { 2760 2761 TypeSP type_sp; 2762 2763 if (!type_name || (must_be_implementation && !GetObjCClassSymbol(type_name))) 2764 return type_sp; 2765 2766 DIEArray die_offsets; 2767 m_index->GetCompleteObjCClass(type_name, must_be_implementation, die_offsets); 2768 2769 const size_t num_matches = die_offsets.size(); 2770 2771 if (num_matches) { 2772 for (size_t i = 0; i < num_matches; ++i) { 2773 const DIERef &die_ref = die_offsets[i]; 2774 DWARFDIE type_die = GetDIE(die_ref); 2775 2776 if (type_die) { 2777 bool try_resolving_type = false; 2778 2779 // Don't try and resolve the DIE we are looking for with the DIE 2780 // itself! 2781 if (type_die != die) { 2782 switch (type_die.Tag()) { 2783 case DW_TAG_class_type: 2784 case DW_TAG_structure_type: 2785 try_resolving_type = true; 2786 break; 2787 default: 2788 break; 2789 } 2790 } 2791 2792 if (try_resolving_type) { 2793 if (must_be_implementation && 2794 type_die.Supports_DW_AT_APPLE_objc_complete_type()) 2795 try_resolving_type = type_die.GetAttributeValueAsUnsigned( 2796 DW_AT_APPLE_objc_complete_type, 0); 2797 2798 if (try_resolving_type) { 2799 Type *resolved_type = ResolveType(type_die, false, true); 2800 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) { 2801 DEBUG_PRINTF("resolved 0x%8.8" PRIx64 " from %s to 0x%8.8" PRIx64 2802 " (cu 0x%8.8" PRIx64 ")\n", 2803 die.GetID(), 2804 m_objfile_sp->GetFileSpec().GetFilename().AsCString( 2805 "<Unknown>"), 2806 type_die.GetID(), type_cu->GetID()); 2807 2808 if (die) 2809 GetDIEToType()[die.GetDIE()] = resolved_type; 2810 type_sp = resolved_type->shared_from_this(); 2811 break; 2812 } 2813 } 2814 } 2815 } else { 2816 m_index->ReportInvalidDIERef(die_ref, type_name.GetStringRef()); 2817 } 2818 } 2819 } 2820 return type_sp; 2821} 2822 2823// This function helps to ensure that the declaration contexts match for two 2824// different DIEs. Often times debug information will refer to a forward 2825// declaration of a type (the equivalent of "struct my_struct;". There will 2826// often be a declaration of that type elsewhere that has the full definition. 2827// When we go looking for the full type "my_struct", we will find one or more 2828// matches in the accelerator tables and we will then need to make sure the 2829// type was in the same declaration context as the original DIE. This function 2830// can efficiently compare two DIEs and will return true when the declaration 2831// context matches, and false when they don't. 2832bool SymbolFileDWARF::DIEDeclContextsMatch(const DWARFDIE &die1, 2833 const DWARFDIE &die2) { 2834 if (die1 == die2) 2835 return true; 2836 2837 std::vector<DWARFDIE> decl_ctx_1; 2838 std::vector<DWARFDIE> decl_ctx_2; 2839 // The declaration DIE stack is a stack of the declaration context DIEs all 2840 // the way back to the compile unit. If a type "T" is declared inside a class 2841 // "B", and class "B" is declared inside a class "A" and class "A" is in a 2842 // namespace "lldb", and the namespace is in a compile unit, there will be a 2843 // stack of DIEs: 2844 // 2845 // [0] DW_TAG_class_type for "B" 2846 // [1] DW_TAG_class_type for "A" 2847 // [2] DW_TAG_namespace for "lldb" 2848 // [3] DW_TAG_compile_unit or DW_TAG_partial_unit for the source file. 2849 // 2850 // We grab both contexts and make sure that everything matches all the way 2851 // back to the compiler unit. 2852 2853 // First lets grab the decl contexts for both DIEs 2854 decl_ctx_1 = die1.GetDeclContextDIEs(); 2855 decl_ctx_2 = die2.GetDeclContextDIEs(); 2856 // Make sure the context arrays have the same size, otherwise we are done 2857 const size_t count1 = decl_ctx_1.size(); 2858 const size_t count2 = decl_ctx_2.size(); 2859 if (count1 != count2) 2860 return false; 2861 2862 // Make sure the DW_TAG values match all the way back up the compile unit. If 2863 // they don't, then we are done. 2864 DWARFDIE decl_ctx_die1; 2865 DWARFDIE decl_ctx_die2; 2866 size_t i; 2867 for (i = 0; i < count1; i++) { 2868 decl_ctx_die1 = decl_ctx_1[i]; 2869 decl_ctx_die2 = decl_ctx_2[i]; 2870 if (decl_ctx_die1.Tag() != decl_ctx_die2.Tag()) 2871 return false; 2872 } 2873#ifndef NDEBUG 2874 2875 // Make sure the top item in the decl context die array is always 2876 // DW_TAG_compile_unit or DW_TAG_partial_unit. If it isn't then 2877 // something went wrong in the DWARFDIE::GetDeclContextDIEs() 2878 // function. 2879 dw_tag_t cu_tag = decl_ctx_1[count1 - 1].Tag(); 2880 UNUSED_IF_ASSERT_DISABLED(cu_tag); 2881 assert(cu_tag == DW_TAG_compile_unit || cu_tag == DW_TAG_partial_unit); 2882 2883#endif 2884 // Always skip the compile unit when comparing by only iterating up to "count 2885 // - 1". Here we compare the names as we go. 2886 for (i = 0; i < count1 - 1; i++) { 2887 decl_ctx_die1 = decl_ctx_1[i]; 2888 decl_ctx_die2 = decl_ctx_2[i]; 2889 const char *name1 = decl_ctx_die1.GetName(); 2890 const char *name2 = decl_ctx_die2.GetName(); 2891 // If the string was from a DW_FORM_strp, then the pointer will often be 2892 // the same! 2893 if (name1 == name2) 2894 continue; 2895 2896 // Name pointers are not equal, so only compare the strings if both are not 2897 // NULL. 2898 if (name1 && name2) { 2899 // If the strings don't compare, we are done... 2900 if (strcmp(name1, name2) != 0) 2901 return false; 2902 } else { 2903 // One name was NULL while the other wasn't 2904 return false; 2905 } 2906 } 2907 // We made it through all of the checks and the declaration contexts are 2908 // equal. 2909 return true; 2910} 2911 2912TypeSP SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext( 2913 const DWARFDeclContext &dwarf_decl_ctx) { 2914 TypeSP type_sp; 2915 2916 const uint32_t dwarf_decl_ctx_count = dwarf_decl_ctx.GetSize(); 2917 if (dwarf_decl_ctx_count > 0) { 2918 const ConstString type_name(dwarf_decl_ctx[0].name); 2919 const dw_tag_t tag = dwarf_decl_ctx[0].tag; 2920 2921 if (type_name) { 2922 Log *log(LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION | 2923 DWARF_LOG_LOOKUPS)); 2924 if (log) { 2925 GetObjectFile()->GetModule()->LogMessage( 2926 log, 2927 "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%" 2928 "s, qualified-name='%s')", 2929 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag), 2930 dwarf_decl_ctx.GetQualifiedName()); 2931 } 2932 2933 DIEArray die_offsets; 2934 m_index->GetTypes(dwarf_decl_ctx, die_offsets); 2935 const size_t num_matches = die_offsets.size(); 2936 2937 // Get the type system that we are looking to find a type for. We will 2938 // use this to ensure any matches we find are in a language that this 2939 // type system supports 2940 const LanguageType language = dwarf_decl_ctx.GetLanguage(); 2941 TypeSystem *type_system = nullptr; 2942 if (language != eLanguageTypeUnknown) { 2943 auto type_system_or_err = GetTypeSystemForLanguage(language); 2944 if (auto err = type_system_or_err.takeError()) { 2945 LLDB_LOG_ERROR( 2946 lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), 2947 std::move(err), "Cannot get TypeSystem for language {}", 2948 Language::GetNameForLanguageType(language)); 2949 } else { 2950 type_system = &type_system_or_err.get(); 2951 } 2952 } 2953 if (num_matches) { 2954 for (size_t i = 0; i < num_matches; ++i) { 2955 const DIERef &die_ref = die_offsets[i]; 2956 DWARFDIE type_die = GetDIE(die_ref); 2957 2958 if (type_die) { 2959 // Make sure type_die's langauge matches the type system we are 2960 // looking for. We don't want to find a "Foo" type from Java if we 2961 // are looking for a "Foo" type for C, C++, ObjC, or ObjC++. 2962 if (type_system && 2963 !type_system->SupportsLanguage(type_die.GetLanguage())) 2964 continue; 2965 bool try_resolving_type = false; 2966 2967 // Don't try and resolve the DIE we are looking for with the DIE 2968 // itself! 2969 const dw_tag_t type_tag = type_die.Tag(); 2970 // Make sure the tags match 2971 if (type_tag == tag) { 2972 // The tags match, lets try resolving this type 2973 try_resolving_type = true; 2974 } else { 2975 // The tags don't match, but we need to watch our for a forward 2976 // declaration for a struct and ("struct foo") ends up being a 2977 // class ("class foo { ... };") or vice versa. 2978 switch (type_tag) { 2979 case DW_TAG_class_type: 2980 // We had a "class foo", see if we ended up with a "struct foo 2981 // { ... };" 2982 try_resolving_type = (tag == DW_TAG_structure_type); 2983 break; 2984 case DW_TAG_structure_type: 2985 // We had a "struct foo", see if we ended up with a "class foo 2986 // { ... };" 2987 try_resolving_type = (tag == DW_TAG_class_type); 2988 break; 2989 default: 2990 // Tags don't match, don't event try to resolve using this type 2991 // whose name matches.... 2992 break; 2993 } 2994 } 2995 2996 if (try_resolving_type) { 2997 DWARFDeclContext type_dwarf_decl_ctx; 2998 type_die.GetDWARFDeclContext(type_dwarf_decl_ctx); 2999 3000 if (log) { 3001 GetObjectFile()->GetModule()->LogMessage( 3002 log, 3003 "SymbolFileDWARF::" 3004 "FindDefinitionTypeForDWARFDeclContext(tag=%s, " 3005 "qualified-name='%s') trying die=0x%8.8x (%s)", 3006 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag), 3007 dwarf_decl_ctx.GetQualifiedName(), type_die.GetOffset(), 3008 type_dwarf_decl_ctx.GetQualifiedName()); 3009 } 3010 3011 // Make sure the decl contexts match all the way up 3012 if (dwarf_decl_ctx == type_dwarf_decl_ctx) { 3013 Type *resolved_type = ResolveType(type_die, false); 3014 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) { 3015 type_sp = resolved_type->shared_from_this(); 3016 break; 3017 } 3018 } 3019 } else { 3020 if (log) { 3021 std::string qualified_name; 3022 type_die.GetQualifiedName(qualified_name); 3023 GetObjectFile()->GetModule()->LogMessage( 3024 log, 3025 "SymbolFileDWARF::" 3026 "FindDefinitionTypeForDWARFDeclContext(tag=%s, " 3027 "qualified-name='%s') ignoring die=0x%8.8x (%s)", 3028 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag), 3029 dwarf_decl_ctx.GetQualifiedName(), type_die.GetOffset(), 3030 qualified_name.c_str()); 3031 } 3032 } 3033 } else { 3034 m_index->ReportInvalidDIERef(die_ref, type_name.GetStringRef()); 3035 } 3036 } 3037 } 3038 } 3039 } 3040 return type_sp; 3041} 3042 3043TypeSP SymbolFileDWARF::ParseType(const SymbolContext &sc, const DWARFDIE &die, 3044 bool *type_is_new_ptr) { 3045 if (!die) 3046 return {}; 3047 3048 auto type_system_or_err = 3049 GetTypeSystemForLanguage(die.GetCU()->GetLanguageType()); 3050 if (auto err = type_system_or_err.takeError()) { 3051 LLDB_LOG_ERROR(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), 3052 std::move(err), "Unable to parse type"); 3053 return {}; 3054 } 3055 3056 DWARFASTParser *dwarf_ast = type_system_or_err->GetDWARFParser(); 3057 if (!dwarf_ast) 3058 return {}; 3059 3060 TypeSP type_sp = dwarf_ast->ParseTypeFromDWARF(sc, die, type_is_new_ptr); 3061 if (type_sp) { 3062 GetTypeList().Insert(type_sp); 3063 3064 if (die.Tag() == DW_TAG_subprogram) { 3065 std::string scope_qualified_name(GetDeclContextForUID(die.GetID()) 3066 .GetScopeQualifiedName() 3067 .AsCString("")); 3068 if (scope_qualified_name.size()) { 3069 m_function_scope_qualified_name_map[scope_qualified_name].insert( 3070 die.GetID()); 3071 } 3072 } 3073 } 3074 3075 return type_sp; 3076} 3077 3078size_t SymbolFileDWARF::ParseTypes(const SymbolContext &sc, 3079 const DWARFDIE &orig_die, 3080 bool parse_siblings, bool parse_children) { 3081 size_t types_added = 0; 3082 DWARFDIE die = orig_die; 3083 3084 while (die) { 3085 const dw_tag_t tag = die.Tag(); 3086 bool type_is_new = false; 3087 3088 Tag dwarf_tag = static_cast<Tag>(tag); 3089 3090 // TODO: Currently ParseTypeFromDWARF(...) which is called by ParseType(...) 3091 // does not handle DW_TAG_subrange_type. It is not clear if this is a bug or 3092 // not. 3093 if (isType(dwarf_tag) && tag != DW_TAG_subrange_type) 3094 ParseType(sc, die, &type_is_new); 3095 3096 if (type_is_new) 3097 ++types_added; 3098 3099 if (parse_children && die.HasChildren()) { 3100 if (die.Tag() == DW_TAG_subprogram) { 3101 SymbolContext child_sc(sc); 3102 child_sc.function = sc.comp_unit->FindFunctionByUID(die.GetID()).get(); 3103 types_added += ParseTypes(child_sc, die.GetFirstChild(), true, true); 3104 } else 3105 types_added += ParseTypes(sc, die.GetFirstChild(), true, true); 3106 } 3107 3108 if (parse_siblings) 3109 die = die.GetSibling(); 3110 else 3111 die.Clear(); 3112 } 3113 return types_added; 3114} 3115 3116size_t SymbolFileDWARF::ParseBlocksRecursive(Function &func) { 3117 std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 3118 CompileUnit *comp_unit = func.GetCompileUnit(); 3119 lldbassert(comp_unit); 3120 3121 DWARFUnit *dwarf_cu = GetDWARFCompileUnit(comp_unit); 3122 if (!dwarf_cu) 3123 return 0; 3124 3125 size_t functions_added = 0; 3126 const dw_offset_t function_die_offset = func.GetID(); 3127 DWARFDIE function_die = dwarf_cu->GetDIE(function_die_offset); 3128 if (function_die) { 3129 ParseBlocksRecursive(*comp_unit, &func.GetBlock(false), function_die, 3130 LLDB_INVALID_ADDRESS, 0); 3131 } 3132 3133 return functions_added; 3134} 3135 3136size_t SymbolFileDWARF::ParseTypes(CompileUnit &comp_unit) { 3137 std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 3138 size_t types_added = 0; 3139 DWARFUnit *dwarf_cu = GetDWARFCompileUnit(&comp_unit); 3140 if (dwarf_cu) { 3141 DWARFDIE dwarf_cu_die = dwarf_cu->DIE(); 3142 if (dwarf_cu_die && dwarf_cu_die.HasChildren()) { 3143 SymbolContext sc; 3144 sc.comp_unit = &comp_unit; 3145 types_added = ParseTypes(sc, dwarf_cu_die.GetFirstChild(), true, true); 3146 } 3147 } 3148 3149 return types_added; 3150} 3151 3152size_t SymbolFileDWARF::ParseVariablesForContext(const SymbolContext &sc) { 3153 std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); 3154 if (sc.comp_unit != nullptr) { 3155 DWARFDebugInfo *info = DebugInfo(); 3156 if (info == nullptr) 3157 return 0; 3158 3159 if (sc.function) { 3160 DWARFDIE function_die = GetDIE(sc.function->GetID()); 3161 3162 const dw_addr_t func_lo_pc = function_die.GetAttributeValueAsAddress( 3163 DW_AT_low_pc, LLDB_INVALID_ADDRESS); 3164 if (func_lo_pc != LLDB_INVALID_ADDRESS) { 3165 const size_t num_variables = ParseVariables( 3166 sc, function_die.GetFirstChild(), func_lo_pc, true, true); 3167 3168 // Let all blocks know they have parse all their variables 3169 sc.function->GetBlock(false).SetDidParseVariables(true, true); 3170 return num_variables; 3171 } 3172 } else if (sc.comp_unit) { 3173 DWARFUnit *dwarf_cu = info->GetUnitAtIndex(sc.comp_unit->GetID()); 3174 3175 if (dwarf_cu == nullptr) 3176 return 0; 3177 3178 uint32_t vars_added = 0; 3179 VariableListSP variables(sc.comp_unit->GetVariableList(false)); 3180 3181 if (variables.get() == nullptr) { 3182 variables = std::make_shared<VariableList>(); 3183 sc.comp_unit->SetVariableList(variables); 3184 3185 DIEArray die_offsets; 3186 m_index->GetGlobalVariables(dwarf_cu->GetNonSkeletonUnit(), 3187 die_offsets); 3188 const size_t num_matches = die_offsets.size(); 3189 if (num_matches) { 3190 for (size_t i = 0; i < num_matches; ++i) { 3191 const DIERef &die_ref = die_offsets[i]; 3192 DWARFDIE die = GetDIE(die_ref); 3193 if (die) { 3194 VariableSP var_sp( 3195 ParseVariableDIE(sc, die, LLDB_INVALID_ADDRESS)); 3196 if (var_sp) { 3197 variables->AddVariableIfUnique(var_sp); 3198 ++vars_added; 3199 } 3200 } else 3201 m_index->ReportInvalidDIERef(die_ref, ""); 3202 } 3203 } 3204 } 3205 return vars_added; 3206 } 3207 } 3208 return 0; 3209} 3210 3211VariableSP SymbolFileDWARF::ParseVariableDIE(const SymbolContext &sc, 3212 const DWARFDIE &die, 3213 const lldb::addr_t func_low_pc) { 3214 if (die.GetDWARF() != this) 3215 return die.GetDWARF()->ParseVariableDIE(sc, die, func_low_pc); 3216 3217 VariableSP var_sp; 3218 if (!die) 3219 return var_sp; 3220 3221 var_sp = GetDIEToVariable()[die.GetDIE()]; 3222 if (var_sp) 3223 return var_sp; // Already been parsed! 3224 3225 const dw_tag_t tag = die.Tag(); 3226 ModuleSP module = GetObjectFile()->GetModule(); 3227 3228 if ((tag == DW_TAG_variable) || (tag == DW_TAG_constant) || 3229 (tag == DW_TAG_formal_parameter && sc.function)) { 3230 DWARFAttributes attributes; 3231 const size_t num_attributes = die.GetAttributes(attributes); 3232 DWARFDIE spec_die; 3233 if (num_attributes > 0) { 3234 const char *name = nullptr; 3235 const char *mangled = nullptr; 3236 Declaration decl; 3237 uint32_t i; 3238 DWARFFormValue type_die_form; 3239 DWARFExpression location; 3240 bool is_external = false; 3241 bool is_artificial = false; 3242 bool location_is_const_value_data = false; 3243 bool has_explicit_location = false; 3244 DWARFFormValue const_value; 3245 Variable::RangeList scope_ranges; 3246 // AccessType accessibility = eAccessNone; 3247 3248 for (i = 0; i < num_attributes; ++i) { 3249 dw_attr_t attr = attributes.AttributeAtIndex(i); 3250 DWARFFormValue form_value; 3251 3252 if (attributes.ExtractFormValueAtIndex(i, form_value)) { 3253 switch (attr) { 3254 case DW_AT_decl_file: 3255 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( 3256 form_value.Unsigned())); 3257 break; 3258 case DW_AT_decl_line: 3259 decl.SetLine(form_value.Unsigned()); 3260 break; 3261 case DW_AT_decl_column: 3262 decl.SetColumn(form_value.Unsigned()); 3263 break; 3264 case DW_AT_name: 3265 name = form_value.AsCString(); 3266 break; 3267 case DW_AT_linkage_name: 3268 case DW_AT_MIPS_linkage_name: 3269 mangled = form_value.AsCString(); 3270 break; 3271 case DW_AT_type: 3272 type_die_form = form_value; 3273 break; 3274 case DW_AT_external: 3275 is_external = form_value.Boolean(); 3276 break; 3277 case DW_AT_const_value: 3278 // If we have already found a DW_AT_location attribute, ignore this 3279 // attribute. 3280 if (!has_explicit_location) { 3281 location_is_const_value_data = true; 3282 // The constant value will be either a block, a data value or a 3283 // string. 3284 auto debug_info_data = die.GetData(); 3285 if (DWARFFormValue::IsBlockForm(form_value.Form())) { 3286 // Retrieve the value as a block expression. 3287 uint32_t block_offset = 3288 form_value.BlockData() - debug_info_data.GetDataStart(); 3289 uint32_t block_length = form_value.Unsigned(); 3290 location = DWARFExpression( 3291 module, 3292 DataExtractor(debug_info_data, block_offset, block_length), 3293 die.GetCU()); 3294 } else if (DWARFFormValue::IsDataForm(form_value.Form())) { 3295 // Retrieve the value as a data expression. 3296 uint32_t data_offset = attributes.DIEOffsetAtIndex(i); 3297 if (auto data_length = form_value.GetFixedSize()) 3298 location = DWARFExpression( 3299 module, 3300 DataExtractor(debug_info_data, data_offset, *data_length), 3301 die.GetCU()); 3302 else { 3303 const uint8_t *data_pointer = form_value.BlockData(); 3304 if (data_pointer) { 3305 form_value.Unsigned(); 3306 } else if (DWARFFormValue::IsDataForm(form_value.Form())) { 3307 // we need to get the byte size of the type later after we 3308 // create the variable 3309 const_value = form_value; 3310 } 3311 } 3312 } else { 3313 // Retrieve the value as a string expression. 3314 if (form_value.Form() == DW_FORM_strp) { 3315 uint32_t data_offset = attributes.DIEOffsetAtIndex(i); 3316 if (auto data_length = form_value.GetFixedSize()) 3317 location = DWARFExpression(module, 3318 DataExtractor(debug_info_data, 3319 data_offset, 3320 *data_length), 3321 die.GetCU()); 3322 } else { 3323 const char *str = form_value.AsCString(); 3324 uint32_t string_offset = 3325 str - (const char *)debug_info_data.GetDataStart(); 3326 uint32_t string_length = strlen(str) + 1; 3327 location = DWARFExpression(module, 3328 DataExtractor(debug_info_data, 3329 string_offset, 3330 string_length), 3331 die.GetCU()); 3332 } 3333 } 3334 } 3335 break; 3336 case DW_AT_location: { 3337 location_is_const_value_data = false; 3338 has_explicit_location = true; 3339 if (DWARFFormValue::IsBlockForm(form_value.Form())) { 3340 auto data = die.GetData(); 3341 3342 uint32_t block_offset = 3343 form_value.BlockData() - data.GetDataStart(); 3344 uint32_t block_length = form_value.Unsigned(); 3345 location = DWARFExpression( 3346 module, DataExtractor(data, block_offset, block_length), 3347 die.GetCU()); 3348 } else { 3349 DataExtractor data = die.GetCU()->GetLocationData(); 3350 dw_offset_t offset = form_value.Unsigned(); 3351 if (form_value.Form() == DW_FORM_loclistx) 3352 offset = die.GetCU()->GetLoclistOffset(offset).getValueOr(-1); 3353 if (data.ValidOffset(offset)) { 3354 data = DataExtractor(data, offset, data.GetByteSize() - offset); 3355 location = DWARFExpression(module, data, die.GetCU()); 3356 assert(func_low_pc != LLDB_INVALID_ADDRESS); 3357 location.SetLocationListAddresses( 3358 attributes.CompileUnitAtIndex(i)->GetBaseAddress(), 3359 func_low_pc); 3360 } 3361 } 3362 } break; 3363 case DW_AT_specification: 3364 spec_die = form_value.Reference(); 3365 break; 3366 case DW_AT_start_scope: 3367 // TODO: Implement this. 3368 break; 3369 case DW_AT_artificial: 3370 is_artificial = form_value.Boolean(); 3371 break; 3372 case DW_AT_accessibility: 3373 break; // accessibility = 3374 // DW_ACCESS_to_AccessType(form_value.Unsigned()); break; 3375 case DW_AT_declaration: 3376 case DW_AT_description: 3377 case DW_AT_endianity: 3378 case DW_AT_segment: 3379 case DW_AT_visibility: 3380 default: 3381 case DW_AT_abstract_origin: 3382 case DW_AT_sibling: 3383 break; 3384 } 3385 } 3386 } 3387 3388 const DWARFDIE parent_context_die = GetDeclContextDIEContainingDIE(die); 3389 const dw_tag_t parent_tag = die.GetParent().Tag(); 3390 bool is_static_member = 3391 (parent_tag == DW_TAG_compile_unit || 3392 parent_tag == DW_TAG_partial_unit) && 3393 (parent_context_die.Tag() == DW_TAG_class_type || 3394 parent_context_die.Tag() == DW_TAG_structure_type); 3395 3396 ValueType scope = eValueTypeInvalid; 3397 3398 const DWARFDIE sc_parent_die = GetParentSymbolContextDIE(die); 3399 SymbolContextScope *symbol_context_scope = nullptr; 3400 3401 bool has_explicit_mangled = mangled != nullptr; 3402 if (!mangled) { 3403 // LLDB relies on the mangled name (DW_TAG_linkage_name or 3404 // DW_AT_MIPS_linkage_name) to generate fully qualified names 3405 // of global variables with commands like "frame var j". For 3406 // example, if j were an int variable holding a value 4 and 3407 // declared in a namespace B which in turn is contained in a 3408 // namespace A, the command "frame var j" returns 3409 // "(int) A::B::j = 4". 3410 // If the compiler does not emit a linkage name, we should be 3411 // able to generate a fully qualified name from the 3412 // declaration context. 3413 if ((parent_tag == DW_TAG_compile_unit || 3414 parent_tag == DW_TAG_partial_unit) && 3415 Language::LanguageIsCPlusPlus(die.GetLanguage())) { 3416 DWARFDeclContext decl_ctx; 3417 3418 die.GetDWARFDeclContext(decl_ctx); 3419 mangled = decl_ctx.GetQualifiedNameAsConstString().GetCString(); 3420 } 3421 } 3422 3423 if (tag == DW_TAG_formal_parameter) 3424 scope = eValueTypeVariableArgument; 3425 else { 3426 // DWARF doesn't specify if a DW_TAG_variable is a local, global 3427 // or static variable, so we have to do a little digging: 3428 // 1) DW_AT_linkage_name implies static lifetime (but may be missing) 3429 // 2) An empty DW_AT_location is an (optimized-out) static lifetime var. 3430 // 3) DW_AT_location containing a DW_OP_addr implies static lifetime. 3431 // Clang likes to combine small global variables into the same symbol 3432 // with locations like: DW_OP_addr(0x1000), DW_OP_constu(2), DW_OP_plus 3433 // so we need to look through the whole expression. 3434 bool is_static_lifetime = 3435 has_explicit_mangled || 3436 (has_explicit_location && !location.IsValid()); 3437 // Check if the location has a DW_OP_addr with any address value... 3438 lldb::addr_t location_DW_OP_addr = LLDB_INVALID_ADDRESS; 3439 if (!location_is_const_value_data) { 3440 bool op_error = false; 3441 location_DW_OP_addr = location.GetLocation_DW_OP_addr(0, op_error); 3442 if (op_error) { 3443 StreamString strm; 3444 location.DumpLocationForAddress(&strm, eDescriptionLevelFull, 0, 0, 3445 nullptr); 3446 GetObjectFile()->GetModule()->ReportError( 3447 "0x%8.8x: %s has an invalid location: %s", die.GetOffset(), 3448 die.GetTagAsCString(), strm.GetData()); 3449 } 3450 if (location_DW_OP_addr != LLDB_INVALID_ADDRESS) 3451 is_static_lifetime = true; 3452 } 3453 SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile(); 3454 if (debug_map_symfile) 3455 // Set the module of the expression to the linked module 3456 // instead of the oject file so the relocated address can be 3457 // found there. 3458 location.SetModule(debug_map_symfile->GetObjectFile()->GetModule()); 3459 3460 if (is_static_lifetime) { 3461 if (is_external) 3462 scope = eValueTypeVariableGlobal; 3463 else 3464 scope = eValueTypeVariableStatic; 3465 3466 if (debug_map_symfile) { 3467 // When leaving the DWARF in the .o files on darwin, when we have a 3468 // global variable that wasn't initialized, the .o file might not 3469 // have allocated a virtual address for the global variable. In 3470 // this case it will have created a symbol for the global variable 3471 // that is undefined/data and external and the value will be the 3472 // byte size of the variable. When we do the address map in 3473 // SymbolFileDWARFDebugMap we rely on having an address, we need to 3474 // do some magic here so we can get the correct address for our 3475 // global variable. The address for all of these entries will be 3476 // zero, and there will be an undefined symbol in this object file, 3477 // and the executable will have a matching symbol with a good 3478 // address. So here we dig up the correct address and replace it in 3479 // the location for the variable, and set the variable's symbol 3480 // context scope to be that of the main executable so the file 3481 // address will resolve correctly. 3482 bool linked_oso_file_addr = false; 3483 if (is_external && location_DW_OP_addr == 0) { 3484 // we have a possible uninitialized extern global 3485 ConstString const_name(mangled ? mangled : name); 3486 ObjectFile *debug_map_objfile = 3487 debug_map_symfile->GetObjectFile(); 3488 if (debug_map_objfile) { 3489 Symtab *debug_map_symtab = debug_map_objfile->GetSymtab(); 3490 if (debug_map_symtab) { 3491 Symbol *exe_symbol = 3492 debug_map_symtab->FindFirstSymbolWithNameAndType( 3493 const_name, eSymbolTypeData, Symtab::eDebugYes, 3494 Symtab::eVisibilityExtern); 3495 if (exe_symbol) { 3496 if (exe_symbol->ValueIsAddress()) { 3497 const addr_t exe_file_addr = 3498 exe_symbol->GetAddressRef().GetFileAddress(); 3499 if (exe_file_addr != LLDB_INVALID_ADDRESS) { 3500 if (location.Update_DW_OP_addr(exe_file_addr)) { 3501 linked_oso_file_addr = true; 3502 symbol_context_scope = exe_symbol; 3503 } 3504 } 3505 } 3506 } 3507 } 3508 } 3509 } 3510 3511 if (!linked_oso_file_addr) { 3512 // The DW_OP_addr is not zero, but it contains a .o file address 3513 // which needs to be linked up correctly. 3514 const lldb::addr_t exe_file_addr = 3515 debug_map_symfile->LinkOSOFileAddress(this, 3516 location_DW_OP_addr); 3517 if (exe_file_addr != LLDB_INVALID_ADDRESS) { 3518 // Update the file address for this variable 3519 location.Update_DW_OP_addr(exe_file_addr); 3520 } else { 3521 // Variable didn't make it into the final executable 3522 return var_sp; 3523 } 3524 } 3525 } 3526 } else { 3527 if (location_is_const_value_data) 3528 scope = eValueTypeVariableStatic; 3529 else { 3530 scope = eValueTypeVariableLocal; 3531 if (debug_map_symfile) { 3532 // We need to check for TLS addresses that we need to fixup 3533 if (location.ContainsThreadLocalStorage()) { 3534 location.LinkThreadLocalStorage( 3535 debug_map_symfile->GetObjectFile()->GetModule(), 3536 [this, debug_map_symfile]( 3537 lldb::addr_t unlinked_file_addr) -> lldb::addr_t { 3538 return debug_map_symfile->LinkOSOFileAddress( 3539 this, unlinked_file_addr); 3540 }); 3541 scope = eValueTypeVariableThreadLocal; 3542 } 3543 } 3544 } 3545 } 3546 } 3547 3548 if (symbol_context_scope == nullptr) { 3549 switch (parent_tag) { 3550 case DW_TAG_subprogram: 3551 case DW_TAG_inlined_subroutine: 3552 case DW_TAG_lexical_block: 3553 if (sc.function) { 3554 symbol_context_scope = sc.function->GetBlock(true).FindBlockByID( 3555 sc_parent_die.GetID()); 3556 if (symbol_context_scope == nullptr) 3557 symbol_context_scope = sc.function; 3558 } 3559 break; 3560 3561 default: 3562 symbol_context_scope = sc.comp_unit; 3563 break; 3564 } 3565 } 3566 3567 if (symbol_context_scope) { 3568 SymbolFileTypeSP type_sp( 3569 new SymbolFileType(*this, GetUID(type_die_form.Reference()))); 3570 3571 if (const_value.Form() && type_sp && type_sp->GetType()) 3572 location.UpdateValue(const_value.Unsigned(), 3573 type_sp->GetType()->GetByteSize().getValueOr(0), 3574 die.GetCU()->GetAddressByteSize()); 3575 3576 var_sp = std::make_shared<Variable>( 3577 die.GetID(), name, mangled, type_sp, scope, symbol_context_scope, 3578 scope_ranges, &decl, location, is_external, is_artificial, 3579 is_static_member); 3580 3581 var_sp->SetLocationIsConstantValueData(location_is_const_value_data); 3582 } else { 3583 // Not ready to parse this variable yet. It might be a global or static 3584 // variable that is in a function scope and the function in the symbol 3585 // context wasn't filled in yet 3586 return var_sp; 3587 } 3588 } 3589 // Cache var_sp even if NULL (the variable was just a specification or was 3590 // missing vital information to be able to be displayed in the debugger 3591 // (missing location due to optimization, etc)) so we don't re-parse this 3592 // DIE over and over later... 3593 GetDIEToVariable()[die.GetDIE()] = var_sp; 3594 if (spec_die) 3595 GetDIEToVariable()[spec_die.GetDIE()] = var_sp; 3596 } 3597 return var_sp; 3598} 3599 3600DWARFDIE 3601SymbolFileDWARF::FindBlockContainingSpecification( 3602 const DIERef &func_die_ref, dw_offset_t spec_block_die_offset) { 3603 // Give the concrete function die specified by "func_die_offset", find the 3604 // concrete block whose DW_AT_specification or DW_AT_abstract_origin points 3605 // to "spec_block_die_offset" 3606 return FindBlockContainingSpecification(DebugInfo()->GetDIE(func_die_ref), 3607 spec_block_die_offset); 3608} 3609 3610DWARFDIE 3611SymbolFileDWARF::FindBlockContainingSpecification( 3612 const DWARFDIE &die, dw_offset_t spec_block_die_offset) { 3613 if (die) { 3614 switch (die.Tag()) { 3615 case DW_TAG_subprogram: 3616 case DW_TAG_inlined_subroutine: 3617 case DW_TAG_lexical_block: { 3618 if (die.GetReferencedDIE(DW_AT_specification).GetOffset() == 3619 spec_block_die_offset) 3620 return die; 3621 3622 if (die.GetReferencedDIE(DW_AT_abstract_origin).GetOffset() == 3623 spec_block_die_offset) 3624 return die; 3625 } break; 3626 default: 3627 break; 3628 } 3629 3630 // Give the concrete function die specified by "func_die_offset", find the 3631 // concrete block whose DW_AT_specification or DW_AT_abstract_origin points 3632 // to "spec_block_die_offset" 3633 for (DWARFDIE child_die = die.GetFirstChild(); child_die; 3634 child_die = child_die.GetSibling()) { 3635 DWARFDIE result_die = 3636 FindBlockContainingSpecification(child_die, spec_block_die_offset); 3637 if (result_die) 3638 return result_die; 3639 } 3640 } 3641 3642 return DWARFDIE(); 3643} 3644 3645size_t SymbolFileDWARF::ParseVariables(const SymbolContext &sc, 3646 const DWARFDIE &orig_die, 3647 const lldb::addr_t func_low_pc, 3648 bool parse_siblings, bool parse_children, 3649 VariableList *cc_variable_list) { 3650 if (!orig_die) 3651 return 0; 3652 3653 VariableListSP variable_list_sp; 3654 3655 size_t vars_added = 0; 3656 DWARFDIE die = orig_die; 3657 while (die) { 3658 dw_tag_t tag = die.Tag(); 3659 3660 // Check to see if we have already parsed this variable or constant? 3661 VariableSP var_sp = GetDIEToVariable()[die.GetDIE()]; 3662 if (var_sp) { 3663 if (cc_variable_list) 3664 cc_variable_list->AddVariableIfUnique(var_sp); 3665 } else { 3666 // We haven't already parsed it, lets do that now. 3667 if ((tag == DW_TAG_variable) || (tag == DW_TAG_constant) || 3668 (tag == DW_TAG_formal_parameter && sc.function)) { 3669 if (variable_list_sp.get() == nullptr) { 3670 DWARFDIE sc_parent_die = GetParentSymbolContextDIE(orig_die); 3671 dw_tag_t parent_tag = sc_parent_die.Tag(); 3672 switch (parent_tag) { 3673 case DW_TAG_compile_unit: 3674 case DW_TAG_partial_unit: 3675 if (sc.comp_unit != nullptr) { 3676 variable_list_sp = sc.comp_unit->GetVariableList(false); 3677 if (variable_list_sp.get() == nullptr) { 3678 variable_list_sp = std::make_shared<VariableList>(); 3679 } 3680 } else { 3681 GetObjectFile()->GetModule()->ReportError( 3682 "parent 0x%8.8" PRIx64 " %s with no valid compile unit in " 3683 "symbol context for 0x%8.8" PRIx64 " %s.\n", 3684 sc_parent_die.GetID(), sc_parent_die.GetTagAsCString(), 3685 orig_die.GetID(), orig_die.GetTagAsCString()); 3686 } 3687 break; 3688 3689 case DW_TAG_subprogram: 3690 case DW_TAG_inlined_subroutine: 3691 case DW_TAG_lexical_block: 3692 if (sc.function != nullptr) { 3693 // Check to see if we already have parsed the variables for the 3694 // given scope 3695 3696 Block *block = sc.function->GetBlock(true).FindBlockByID( 3697 sc_parent_die.GetID()); 3698 if (block == nullptr) { 3699 // This must be a specification or abstract origin with a 3700 // concrete block counterpart in the current function. We need 3701 // to find the concrete block so we can correctly add the 3702 // variable to it 3703 const DWARFDIE concrete_block_die = 3704 FindBlockContainingSpecification( 3705 GetDIE(sc.function->GetID()), 3706 sc_parent_die.GetOffset()); 3707 if (concrete_block_die) 3708 block = sc.function->GetBlock(true).FindBlockByID( 3709 concrete_block_die.GetID()); 3710 } 3711 3712 if (block != nullptr) { 3713 const bool can_create = false; 3714 variable_list_sp = block->GetBlockVariableList(can_create); 3715 if (variable_list_sp.get() == nullptr) { 3716 variable_list_sp = std::make_shared<VariableList>(); 3717 block->SetVariableList(variable_list_sp); 3718 } 3719 } 3720 } 3721 break; 3722 3723 default: 3724 GetObjectFile()->GetModule()->ReportError( 3725 "didn't find appropriate parent DIE for variable list for " 3726 "0x%8.8" PRIx64 " %s.\n", 3727 orig_die.GetID(), orig_die.GetTagAsCString()); 3728 break; 3729 } 3730 } 3731 3732 if (variable_list_sp) { 3733 VariableSP var_sp(ParseVariableDIE(sc, die, func_low_pc)); 3734 if (var_sp) { 3735 variable_list_sp->AddVariableIfUnique(var_sp); 3736 if (cc_variable_list) 3737 cc_variable_list->AddVariableIfUnique(var_sp); 3738 ++vars_added; 3739 } 3740 } 3741 } 3742 } 3743 3744 bool skip_children = (sc.function == nullptr && tag == DW_TAG_subprogram); 3745 3746 if (!skip_children && parse_children && die.HasChildren()) { 3747 vars_added += ParseVariables(sc, die.GetFirstChild(), func_low_pc, true, 3748 true, cc_variable_list); 3749 } 3750 3751 if (parse_siblings) 3752 die = die.GetSibling(); 3753 else 3754 die.Clear(); 3755 } 3756 return vars_added; 3757} 3758 3759/// Collect call site parameters in a DW_TAG_call_site DIE. 3760static CallSiteParameterArray 3761CollectCallSiteParameters(ModuleSP module, DWARFDIE call_site_die) { 3762 CallSiteParameterArray parameters; 3763 for (DWARFDIE child = call_site_die.GetFirstChild(); child.IsValid(); 3764 child = child.GetSibling()) { 3765 if (child.Tag() != DW_TAG_call_site_parameter) 3766 continue; 3767 3768 llvm::Optional<DWARFExpression> LocationInCallee; 3769 llvm::Optional<DWARFExpression> LocationInCaller; 3770 3771 DWARFAttributes attributes; 3772 const size_t num_attributes = child.GetAttributes(attributes); 3773 3774 // Parse the location at index \p attr_index within this call site parameter 3775 // DIE, or return None on failure. 3776 auto parse_simple_location = 3777 [&](int attr_index) -> llvm::Optional<DWARFExpression> { 3778 DWARFFormValue form_value; 3779 if (!attributes.ExtractFormValueAtIndex(attr_index, form_value)) 3780 return {}; 3781 if (!DWARFFormValue::IsBlockForm(form_value.Form())) 3782 return {}; 3783 auto data = child.GetData(); 3784 uint32_t block_offset = form_value.BlockData() - data.GetDataStart(); 3785 uint32_t block_length = form_value.Unsigned(); 3786 return DWARFExpression(module, 3787 DataExtractor(data, block_offset, block_length), 3788 child.GetCU()); 3789 }; 3790 3791 for (size_t i = 0; i < num_attributes; ++i) { 3792 dw_attr_t attr = attributes.AttributeAtIndex(i); 3793 if (attr == DW_AT_location) 3794 LocationInCallee = parse_simple_location(i); 3795 if (attr == DW_AT_call_value) 3796 LocationInCaller = parse_simple_location(i); 3797 } 3798 3799 if (LocationInCallee && LocationInCaller) { 3800 CallSiteParameter param = {*LocationInCallee, *LocationInCaller}; 3801 parameters.push_back(param); 3802 } 3803 } 3804 return parameters; 3805} 3806 3807/// Collect call graph edges present in a function DIE. 3808static std::vector<std::unique_ptr<lldb_private::CallEdge>> 3809CollectCallEdges(ModuleSP module, DWARFDIE function_die) { 3810 // Check if the function has a supported call site-related attribute. 3811 // TODO: In the future it may be worthwhile to support call_all_source_calls. 3812 uint64_t has_call_edges = 3813 function_die.GetAttributeValueAsUnsigned(DW_AT_call_all_calls, 0); 3814 if (!has_call_edges) 3815 return {}; 3816 3817 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_STEP)); 3818 LLDB_LOG(log, "CollectCallEdges: Found call site info in {0}", 3819 function_die.GetPubname()); 3820 3821 // Scan the DIE for TAG_call_site entries. 3822 // TODO: A recursive scan of all blocks in the subprogram is needed in order 3823 // to be DWARF5-compliant. This may need to be done lazily to be performant. 3824 // For now, assume that all entries are nested directly under the subprogram 3825 // (this is the kind of DWARF LLVM produces) and parse them eagerly. 3826 std::vector<std::unique_ptr<CallEdge>> call_edges; 3827 for (DWARFDIE child = function_die.GetFirstChild(); child.IsValid(); 3828 child = child.GetSibling()) { 3829 if (child.Tag() != DW_TAG_call_site) 3830 continue; 3831 3832 llvm::Optional<DWARFDIE> call_origin; 3833 llvm::Optional<DWARFExpression> call_target; 3834 addr_t return_pc = LLDB_INVALID_ADDRESS; 3835 3836 DWARFAttributes attributes; 3837 const size_t num_attributes = child.GetAttributes(attributes); 3838 for (size_t i = 0; i < num_attributes; ++i) { 3839 DWARFFormValue form_value; 3840 if (!attributes.ExtractFormValueAtIndex(i, form_value)) { 3841 LLDB_LOG(log, "CollectCallEdges: Could not extract TAG_call_site form"); 3842 break; 3843 } 3844 3845 dw_attr_t attr = attributes.AttributeAtIndex(i); 3846 3847 // Extract DW_AT_call_origin (the call target's DIE). 3848 if (attr == DW_AT_call_origin) { 3849 call_origin = form_value.Reference(); 3850 if (!call_origin->IsValid()) { 3851 LLDB_LOG(log, "CollectCallEdges: Invalid call origin in {0}", 3852 function_die.GetPubname()); 3853 break; 3854 } 3855 } 3856 3857 // Extract DW_AT_call_return_pc (the PC the call returns to) if it's 3858 // available. It should only ever be unavailable for tail call edges, in 3859 // which case use LLDB_INVALID_ADDRESS. 3860 if (attr == DW_AT_call_return_pc) 3861 return_pc = form_value.Address(); 3862 3863 // Extract DW_AT_call_target (the location of the address of the indirect 3864 // call). 3865 if (attr == DW_AT_call_target) { 3866 if (!DWARFFormValue::IsBlockForm(form_value.Form())) { 3867 LLDB_LOG(log, 3868 "CollectCallEdges: AT_call_target does not have block form"); 3869 break; 3870 } 3871 3872 auto data = child.GetData(); 3873 uint32_t block_offset = form_value.BlockData() - data.GetDataStart(); 3874 uint32_t block_length = form_value.Unsigned(); 3875 call_target = DWARFExpression( 3876 module, DataExtractor(data, block_offset, block_length), 3877 child.GetCU()); 3878 } 3879 } 3880 if (!call_origin && !call_target) { 3881 LLDB_LOG(log, "CollectCallEdges: call site without any call target"); 3882 continue; 3883 } 3884 3885 // Extract call site parameters. 3886 CallSiteParameterArray parameters = 3887 CollectCallSiteParameters(module, child); 3888 3889 std::unique_ptr<CallEdge> edge; 3890 if (call_origin) { 3891 LLDB_LOG(log, "CollectCallEdges: Found call origin: {0} (retn-PC: {1:x})", 3892 call_origin->GetPubname(), return_pc); 3893 edge = std::make_unique<DirectCallEdge>(call_origin->GetMangledName(), 3894 return_pc, std::move(parameters)); 3895 } else { 3896 if (log) { 3897 StreamString call_target_desc; 3898 call_target->GetDescription(&call_target_desc, eDescriptionLevelBrief, 3899 LLDB_INVALID_ADDRESS, nullptr); 3900 LLDB_LOG(log, "CollectCallEdges: Found indirect call target: {0}", 3901 call_target_desc.GetString()); 3902 } 3903 edge = std::make_unique<IndirectCallEdge>(*call_target, return_pc, 3904 std::move(parameters)); 3905 } 3906 3907 if (log && parameters.size()) { 3908 for (const CallSiteParameter ¶m : parameters) { 3909 StreamString callee_loc_desc, caller_loc_desc; 3910 param.LocationInCallee.GetDescription(&callee_loc_desc, 3911 eDescriptionLevelBrief, 3912 LLDB_INVALID_ADDRESS, nullptr); 3913 param.LocationInCaller.GetDescription(&caller_loc_desc, 3914 eDescriptionLevelBrief, 3915 LLDB_INVALID_ADDRESS, nullptr); 3916 LLDB_LOG(log, "CollectCallEdges: \tparam: {0} => {1}", 3917 callee_loc_desc.GetString(), caller_loc_desc.GetString()); 3918 } 3919 } 3920 3921 call_edges.push_back(std::move(edge)); 3922 } 3923 return call_edges; 3924} 3925 3926std::vector<std::unique_ptr<lldb_private::CallEdge>> 3927SymbolFileDWARF::ParseCallEdgesInFunction(UserID func_id) { 3928 DWARFDIE func_die = GetDIE(func_id.GetID()); 3929 if (func_die.IsValid()) 3930 return CollectCallEdges(GetObjectFile()->GetModule(), func_die); 3931 return {}; 3932} 3933 3934// PluginInterface protocol 3935ConstString SymbolFileDWARF::GetPluginName() { return GetPluginNameStatic(); } 3936 3937uint32_t SymbolFileDWARF::GetPluginVersion() { return 1; } 3938 3939void SymbolFileDWARF::Dump(lldb_private::Stream &s) { 3940 SymbolFile::Dump(s); 3941 m_index->Dump(s); 3942} 3943 3944void SymbolFileDWARF::DumpClangAST(Stream &s) { 3945 auto ts_or_err = GetTypeSystemForLanguage(eLanguageTypeC_plus_plus); 3946 if (!ts_or_err) 3947 return; 3948 ClangASTContext *clang = 3949 llvm::dyn_cast_or_null<ClangASTContext>(&ts_or_err.get()); 3950 if (!clang) 3951 return; 3952 clang->Dump(s); 3953} 3954 3955SymbolFileDWARFDebugMap *SymbolFileDWARF::GetDebugMapSymfile() { 3956 if (m_debug_map_symfile == nullptr && !m_debug_map_module_wp.expired()) { 3957 lldb::ModuleSP module_sp(m_debug_map_module_wp.lock()); 3958 if (module_sp) { 3959 m_debug_map_symfile = 3960 (SymbolFileDWARFDebugMap *)module_sp->GetSymbolFile(); 3961 } 3962 } 3963 return m_debug_map_symfile; 3964} 3965 3966SymbolFileDWARFDwp *SymbolFileDWARF::GetDwpSymbolFile() { 3967 llvm::call_once(m_dwp_symfile_once_flag, [this]() { 3968 ModuleSpec module_spec; 3969 module_spec.GetFileSpec() = m_objfile_sp->GetFileSpec(); 3970 module_spec.GetSymbolFileSpec() = 3971 FileSpec(m_objfile_sp->GetFileSpec().GetPath() + ".dwp"); 3972 3973 FileSpecList search_paths = Target::GetDefaultDebugFileSearchPaths(); 3974 FileSpec dwp_filespec = 3975 Symbols::LocateExecutableSymbolFile(module_spec, search_paths); 3976 if (FileSystem::Instance().Exists(dwp_filespec)) { 3977 m_dwp_symfile = SymbolFileDWARFDwp::Create(GetObjectFile()->GetModule(), 3978 dwp_filespec); 3979 } 3980 }); 3981 return m_dwp_symfile.get(); 3982} 3983