| //===-- SymbolFileDWARFDebugMap.cpp ---------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "SymbolFileDWARFDebugMap.h" |
| #include "DWARFDebugAranges.h" |
| |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/ModuleList.h" |
| #include "lldb/Core/PluginManager.h" |
| #include "lldb/Core/Section.h" |
| #include "lldb/Host/FileSystem.h" |
| #include "lldb/Utility/RangeMap.h" |
| #include "lldb/Utility/RegularExpression.h" |
| #include "lldb/Utility/Timer.h" |
| |
| //#define DEBUG_OSO_DMAP // DO NOT CHECKIN WITH THIS NOT COMMENTED OUT |
| #if defined(DEBUG_OSO_DMAP) |
| #include "lldb/Core/StreamFile.h" |
| #endif |
| |
| #include "lldb/Symbol/CompileUnit.h" |
| #include "lldb/Symbol/LineTable.h" |
| #include "lldb/Symbol/ObjectFile.h" |
| #include "lldb/Symbol/SymbolVendor.h" |
| #include "lldb/Symbol/TypeMap.h" |
| #include "lldb/Symbol/VariableList.h" |
| #include "llvm/Support/ScopedPrinter.h" |
| |
| #include "LogChannelDWARF.h" |
| #include "SymbolFileDWARF.h" |
| |
| #include <memory> |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| char SymbolFileDWARFDebugMap::ID; |
| |
| // Subclass lldb_private::Module so we can intercept the |
| // "Module::GetObjectFile()" (so we can fixup the object file sections) and |
| // also for "Module::GetSymbolFile()" (so we can fixup the symbol file id. |
| |
| const SymbolFileDWARFDebugMap::FileRangeMap & |
| SymbolFileDWARFDebugMap::CompileUnitInfo::GetFileRangeMap( |
| SymbolFileDWARFDebugMap *exe_symfile) { |
| if (file_range_map_valid) |
| return file_range_map; |
| |
| file_range_map_valid = true; |
| |
| Module *oso_module = exe_symfile->GetModuleByCompUnitInfo(this); |
| if (!oso_module) |
| return file_range_map; |
| |
| ObjectFile *oso_objfile = oso_module->GetObjectFile(); |
| if (!oso_objfile) |
| return file_range_map; |
| |
| Log *log = GetLog(DWARFLog::DebugMap); |
| LLDB_LOGF( |
| log, |
| "%p: SymbolFileDWARFDebugMap::CompileUnitInfo::GetFileRangeMap ('%s')", |
| static_cast<void *>(this), |
| oso_module->GetSpecificationDescription().c_str()); |
| |
| std::vector<SymbolFileDWARFDebugMap::CompileUnitInfo *> cu_infos; |
| if (exe_symfile->GetCompUnitInfosForModule(oso_module, cu_infos)) { |
| for (auto comp_unit_info : cu_infos) { |
| Symtab *exe_symtab = exe_symfile->GetObjectFile()->GetSymtab(); |
| ModuleSP oso_module_sp(oso_objfile->GetModule()); |
| Symtab *oso_symtab = oso_objfile->GetSymtab(); |
| |
| /// const uint32_t fun_resolve_flags = SymbolContext::Module | |
| /// eSymbolContextCompUnit | eSymbolContextFunction; |
| // SectionList *oso_sections = oso_objfile->Sections(); |
| // Now we need to make sections that map from zero based object file |
| // addresses to where things ended up in the main executable. |
| |
| assert(comp_unit_info->first_symbol_index != UINT32_MAX); |
| // End index is one past the last valid symbol index |
| const uint32_t oso_end_idx = comp_unit_info->last_symbol_index + 1; |
| for (uint32_t idx = comp_unit_info->first_symbol_index + |
| 2; // Skip the N_SO and N_OSO |
| idx < oso_end_idx; ++idx) { |
| Symbol *exe_symbol = exe_symtab->SymbolAtIndex(idx); |
| if (exe_symbol) { |
| if (!exe_symbol->IsDebug()) |
| continue; |
| |
| switch (exe_symbol->GetType()) { |
| default: |
| break; |
| |
| case eSymbolTypeCode: { |
| // For each N_FUN, or function that we run into in the debug map we |
| // make a new section that we add to the sections found in the .o |
| // file. This new section has the file address set to what the |
| // addresses are in the .o file, and the load address is adjusted |
| // to match where it ended up in the final executable! We do this |
| // before we parse any dwarf info so that when it goes get parsed |
| // all section/offset addresses that get registered will resolve |
| // correctly to the new addresses in the main executable. |
| |
| // First we find the original symbol in the .o file's symbol table |
| Symbol *oso_fun_symbol = oso_symtab->FindFirstSymbolWithNameAndType( |
| exe_symbol->GetMangled().GetName(Mangled::ePreferMangled), |
| eSymbolTypeCode, Symtab::eDebugNo, Symtab::eVisibilityAny); |
| if (oso_fun_symbol) { |
| // Add the inverse OSO file address to debug map entry mapping |
| exe_symfile->AddOSOFileRange( |
| this, exe_symbol->GetAddressRef().GetFileAddress(), |
| exe_symbol->GetByteSize(), |
| oso_fun_symbol->GetAddressRef().GetFileAddress(), |
| oso_fun_symbol->GetByteSize()); |
| } |
| } break; |
| |
| case eSymbolTypeData: { |
| // For each N_GSYM we remap the address for the global by making a |
| // new section that we add to the sections found in the .o file. |
| // This new section has the file address set to what the addresses |
| // are in the .o file, and the load address is adjusted to match |
| // where it ended up in the final executable! We do this before we |
| // parse any dwarf info so that when it goes get parsed all |
| // section/offset addresses that get registered will resolve |
| // correctly to the new addresses in the main executable. We |
| // initially set the section size to be 1 byte, but will need to |
| // fix up these addresses further after all globals have been |
| // parsed to span the gaps, or we can find the global variable |
| // sizes from the DWARF info as we are parsing. |
| |
| // Next we find the non-stab entry that corresponds to the N_GSYM |
| // in the .o file |
| Symbol *oso_gsym_symbol = |
| oso_symtab->FindFirstSymbolWithNameAndType( |
| exe_symbol->GetMangled().GetName(Mangled::ePreferMangled), |
| eSymbolTypeData, Symtab::eDebugNo, Symtab::eVisibilityAny); |
| if (exe_symbol && oso_gsym_symbol && exe_symbol->ValueIsAddress() && |
| oso_gsym_symbol->ValueIsAddress()) { |
| // Add the inverse OSO file address to debug map entry mapping |
| exe_symfile->AddOSOFileRange( |
| this, exe_symbol->GetAddressRef().GetFileAddress(), |
| exe_symbol->GetByteSize(), |
| oso_gsym_symbol->GetAddressRef().GetFileAddress(), |
| oso_gsym_symbol->GetByteSize()); |
| } |
| } break; |
| } |
| } |
| } |
| |
| exe_symfile->FinalizeOSOFileRanges(this); |
| // We don't need the symbols anymore for the .o files |
| oso_objfile->ClearSymtab(); |
| } |
| } |
| return file_range_map; |
| } |
| |
| class DebugMapModule : public Module { |
| public: |
| DebugMapModule(const ModuleSP &exe_module_sp, uint32_t cu_idx, |
| const FileSpec &file_spec, const ArchSpec &arch, |
| const ConstString *object_name, off_t object_offset, |
| const llvm::sys::TimePoint<> object_mod_time) |
| : Module(file_spec, arch, object_name, object_offset, object_mod_time), |
| m_exe_module_wp(exe_module_sp), m_cu_idx(cu_idx) {} |
| |
| ~DebugMapModule() override = default; |
| |
| SymbolFile * |
| GetSymbolFile(bool can_create = true, |
| lldb_private::Stream *feedback_strm = nullptr) override { |
| // Scope for locker |
| if (m_symfile_up.get() || !can_create) |
| return m_symfile_up ? m_symfile_up->GetSymbolFile() : nullptr; |
| |
| ModuleSP exe_module_sp(m_exe_module_wp.lock()); |
| if (exe_module_sp) { |
| // Now get the object file outside of a locking scope |
| ObjectFile *oso_objfile = GetObjectFile(); |
| if (oso_objfile) { |
| std::lock_guard<std::recursive_mutex> guard(m_mutex); |
| if (SymbolFile *symfile = |
| Module::GetSymbolFile(can_create, feedback_strm)) { |
| // Set a pointer to this class to set our OSO DWARF file know that |
| // the DWARF is being used along with a debug map and that it will |
| // have the remapped sections that we do below. |
| SymbolFileDWARF *oso_symfile = |
| SymbolFileDWARFDebugMap::GetSymbolFileAsSymbolFileDWARF(symfile); |
| |
| if (!oso_symfile) |
| return nullptr; |
| |
| ObjectFile *exe_objfile = exe_module_sp->GetObjectFile(); |
| SymbolFile *exe_symfile = exe_module_sp->GetSymbolFile(); |
| |
| if (exe_objfile && exe_symfile) { |
| oso_symfile->SetDebugMapModule(exe_module_sp); |
| // Set the ID of the symbol file DWARF to the index of the OSO |
| // shifted left by 32 bits to provide a unique prefix for any |
| // UserID's that get created in the symbol file. |
| oso_symfile->SetID(((uint64_t)m_cu_idx + 1ull) << 32ull); |
| } |
| return symfile; |
| } |
| } |
| } |
| return nullptr; |
| } |
| |
| protected: |
| ModuleWP m_exe_module_wp; |
| const uint32_t m_cu_idx; |
| }; |
| |
| void SymbolFileDWARFDebugMap::Initialize() { |
| PluginManager::RegisterPlugin(GetPluginNameStatic(), |
| GetPluginDescriptionStatic(), CreateInstance); |
| } |
| |
| void SymbolFileDWARFDebugMap::Terminate() { |
| PluginManager::UnregisterPlugin(CreateInstance); |
| } |
| |
| llvm::StringRef SymbolFileDWARFDebugMap::GetPluginDescriptionStatic() { |
| return "DWARF and DWARF3 debug symbol file reader (debug map)."; |
| } |
| |
| SymbolFile *SymbolFileDWARFDebugMap::CreateInstance(ObjectFileSP objfile_sp) { |
| return new SymbolFileDWARFDebugMap(std::move(objfile_sp)); |
| } |
| |
| SymbolFileDWARFDebugMap::SymbolFileDWARFDebugMap(ObjectFileSP objfile_sp) |
| : SymbolFileCommon(std::move(objfile_sp)), m_flags(), m_compile_unit_infos(), |
| m_func_indexes(), m_glob_indexes(), |
| m_supports_DW_AT_APPLE_objc_complete_type(eLazyBoolCalculate) {} |
| |
| SymbolFileDWARFDebugMap::~SymbolFileDWARFDebugMap() = default; |
| |
| void SymbolFileDWARFDebugMap::InitializeObject() {} |
| |
| void SymbolFileDWARFDebugMap::InitOSO() { |
| if (m_flags.test(kHaveInitializedOSOs)) |
| return; |
| |
| m_flags.set(kHaveInitializedOSOs); |
| |
| // If the object file has been stripped, there is no sense in looking further |
| // as all of the debug symbols for the debug map will not be available |
| if (m_objfile_sp->IsStripped()) |
| return; |
| |
| // Also make sure the file type is some sort of executable. Core files, debug |
| // info files (dSYM), object files (.o files), and stub libraries all can |
| switch (m_objfile_sp->GetType()) { |
| case ObjectFile::eTypeInvalid: |
| case ObjectFile::eTypeCoreFile: |
| case ObjectFile::eTypeDebugInfo: |
| case ObjectFile::eTypeObjectFile: |
| case ObjectFile::eTypeStubLibrary: |
| case ObjectFile::eTypeUnknown: |
| case ObjectFile::eTypeJIT: |
| return; |
| |
| case ObjectFile::eTypeExecutable: |
| case ObjectFile::eTypeDynamicLinker: |
| case ObjectFile::eTypeSharedLibrary: |
| break; |
| } |
| |
| // In order to get the abilities of this plug-in, we look at the list of |
| // N_OSO entries (object files) from the symbol table and make sure that |
| // these files exist and also contain valid DWARF. If we get any of that then |
| // we return the abilities of the first N_OSO's DWARF. |
| |
| Symtab *symtab = m_objfile_sp->GetSymtab(); |
| if (symtab) { |
| Log *log = GetLog(DWARFLog::DebugMap); |
| |
| std::vector<uint32_t> oso_indexes; |
| // When a mach-o symbol is encoded, the n_type field is encoded in bits |
| // 23:16, and the n_desc field is encoded in bits 15:0. |
| // |
| // To find all N_OSO entries that are part of the DWARF + debug map we find |
| // only object file symbols with the flags value as follows: bits 23:16 == |
| // 0x66 (N_OSO) bits 15: 0 == 0x0001 (specifies this is a debug map object |
| // file) |
| const uint32_t k_oso_symbol_flags_value = 0x660001u; |
| |
| const uint32_t oso_index_count = |
| symtab->AppendSymbolIndexesWithTypeAndFlagsValue( |
| eSymbolTypeObjectFile, k_oso_symbol_flags_value, oso_indexes); |
| |
| if (oso_index_count > 0) { |
| symtab->AppendSymbolIndexesWithType(eSymbolTypeCode, Symtab::eDebugYes, |
| Symtab::eVisibilityAny, |
| m_func_indexes); |
| symtab->AppendSymbolIndexesWithType(eSymbolTypeData, Symtab::eDebugYes, |
| Symtab::eVisibilityAny, |
| m_glob_indexes); |
| |
| symtab->SortSymbolIndexesByValue(m_func_indexes, true); |
| symtab->SortSymbolIndexesByValue(m_glob_indexes, true); |
| |
| for (uint32_t sym_idx : m_func_indexes) { |
| const Symbol *symbol = symtab->SymbolAtIndex(sym_idx); |
| lldb::addr_t file_addr = symbol->GetAddressRef().GetFileAddress(); |
| lldb::addr_t byte_size = symbol->GetByteSize(); |
| DebugMap::Entry debug_map_entry( |
| file_addr, byte_size, OSOEntry(sym_idx, LLDB_INVALID_ADDRESS)); |
| m_debug_map.Append(debug_map_entry); |
| } |
| for (uint32_t sym_idx : m_glob_indexes) { |
| const Symbol *symbol = symtab->SymbolAtIndex(sym_idx); |
| lldb::addr_t file_addr = symbol->GetAddressRef().GetFileAddress(); |
| lldb::addr_t byte_size = symbol->GetByteSize(); |
| DebugMap::Entry debug_map_entry( |
| file_addr, byte_size, OSOEntry(sym_idx, LLDB_INVALID_ADDRESS)); |
| m_debug_map.Append(debug_map_entry); |
| } |
| m_debug_map.Sort(); |
| |
| m_compile_unit_infos.resize(oso_index_count); |
| |
| for (uint32_t i = 0; i < oso_index_count; ++i) { |
| const uint32_t so_idx = oso_indexes[i] - 1; |
| const uint32_t oso_idx = oso_indexes[i]; |
| const Symbol *so_symbol = symtab->SymbolAtIndex(so_idx); |
| const Symbol *oso_symbol = symtab->SymbolAtIndex(oso_idx); |
| if (so_symbol && oso_symbol && |
| so_symbol->GetType() == eSymbolTypeSourceFile && |
| oso_symbol->GetType() == eSymbolTypeObjectFile) { |
| m_compile_unit_infos[i].so_file.SetFile( |
| so_symbol->GetName().AsCString(), FileSpec::Style::native); |
| m_compile_unit_infos[i].oso_path = oso_symbol->GetName(); |
| m_compile_unit_infos[i].oso_mod_time = |
| llvm::sys::toTimePoint(oso_symbol->GetIntegerValue(0)); |
| uint32_t sibling_idx = so_symbol->GetSiblingIndex(); |
| // The sibling index can't be less that or equal to the current index |
| // "i" |
| if (sibling_idx == UINT32_MAX) { |
| m_objfile_sp->GetModule()->ReportError( |
| "N_SO in symbol with UID %u has invalid sibling in debug map, " |
| "please file a bug and attach the binary listed in this error", |
| so_symbol->GetID()); |
| } else { |
| const Symbol *last_symbol = symtab->SymbolAtIndex(sibling_idx - 1); |
| m_compile_unit_infos[i].first_symbol_index = so_idx; |
| m_compile_unit_infos[i].last_symbol_index = sibling_idx - 1; |
| m_compile_unit_infos[i].first_symbol_id = so_symbol->GetID(); |
| m_compile_unit_infos[i].last_symbol_id = last_symbol->GetID(); |
| |
| LLDB_LOGF(log, "Initialized OSO 0x%8.8x: file=%s", i, |
| oso_symbol->GetName().GetCString()); |
| } |
| } else { |
| if (oso_symbol == nullptr) |
| m_objfile_sp->GetModule()->ReportError( |
| "N_OSO symbol[%u] can't be found, please file a bug and attach " |
| "the binary listed in this error", |
| oso_idx); |
| else if (so_symbol == nullptr) |
| m_objfile_sp->GetModule()->ReportError( |
| "N_SO not found for N_OSO symbol[%u], please file a bug and " |
| "attach the binary listed in this error", |
| oso_idx); |
| else if (so_symbol->GetType() != eSymbolTypeSourceFile) |
| m_objfile_sp->GetModule()->ReportError( |
| "N_SO has incorrect symbol type (%u) for N_OSO symbol[%u], " |
| "please file a bug and attach the binary listed in this error", |
| so_symbol->GetType(), oso_idx); |
| else if (oso_symbol->GetType() != eSymbolTypeSourceFile) |
| m_objfile_sp->GetModule()->ReportError( |
| "N_OSO has incorrect symbol type (%u) for N_OSO symbol[%u], " |
| "please file a bug and attach the binary listed in this error", |
| oso_symbol->GetType(), oso_idx); |
| } |
| } |
| } |
| } |
| } |
| |
| Module *SymbolFileDWARFDebugMap::GetModuleByOSOIndex(uint32_t oso_idx) { |
| const uint32_t cu_count = GetNumCompileUnits(); |
| if (oso_idx < cu_count) |
| return GetModuleByCompUnitInfo(&m_compile_unit_infos[oso_idx]); |
| return nullptr; |
| } |
| |
| Module *SymbolFileDWARFDebugMap::GetModuleByCompUnitInfo( |
| CompileUnitInfo *comp_unit_info) { |
| if (!comp_unit_info->oso_sp) { |
| auto pos = m_oso_map.find( |
| {comp_unit_info->oso_path, comp_unit_info->oso_mod_time}); |
| if (pos != m_oso_map.end()) { |
| comp_unit_info->oso_sp = pos->second; |
| } else { |
| ObjectFile *obj_file = GetObjectFile(); |
| comp_unit_info->oso_sp = std::make_shared<OSOInfo>(); |
| m_oso_map[{comp_unit_info->oso_path, comp_unit_info->oso_mod_time}] = |
| comp_unit_info->oso_sp; |
| const char *oso_path = comp_unit_info->oso_path.GetCString(); |
| FileSpec oso_file(oso_path); |
| ConstString oso_object; |
| if (FileSystem::Instance().Exists(oso_file)) { |
| // The modification time returned by the FS can have a higher precision |
| // than the one from the CU. |
| auto oso_mod_time = std::chrono::time_point_cast<std::chrono::seconds>( |
| FileSystem::Instance().GetModificationTime(oso_file)); |
| // A timestamp of 0 means that the linker was in deterministic mode. In |
| // that case, we should skip the check against the filesystem last |
| // modification timestamp, since it will never match. |
| if (comp_unit_info->oso_mod_time != llvm::sys::TimePoint<>() && |
| oso_mod_time != comp_unit_info->oso_mod_time) { |
| obj_file->GetModule()->ReportError( |
| "debug map object file '%s' has changed (actual time is " |
| "%s, debug map time is %s" |
| ") since this executable was linked, file will be ignored", |
| oso_file.GetPath().c_str(), llvm::to_string(oso_mod_time).c_str(), |
| llvm::to_string(comp_unit_info->oso_mod_time).c_str()); |
| return nullptr; |
| } |
| |
| } else { |
| const bool must_exist = true; |
| |
| if (!ObjectFile::SplitArchivePathWithObject(oso_path, oso_file, |
| oso_object, must_exist)) { |
| return nullptr; |
| } |
| } |
| // Always create a new module for .o files. Why? Because we use the debug |
| // map, to add new sections to each .o file and even though a .o file |
| // might not have changed, the sections that get added to the .o file can |
| // change. |
| ArchSpec oso_arch; |
| // Only adopt the architecture from the module (not the vendor or OS) |
| // since .o files for "i386-apple-ios" will historically show up as "i386 |
| // -apple-macosx" due to the lack of a LC_VERSION_MIN_MACOSX or |
| // LC_VERSION_MIN_IPHONEOS load command... |
| oso_arch.SetTriple(m_objfile_sp->GetModule() |
| ->GetArchitecture() |
| .GetTriple() |
| .getArchName() |
| .str() |
| .c_str()); |
| comp_unit_info->oso_sp->module_sp = std::make_shared<DebugMapModule>( |
| obj_file->GetModule(), GetCompUnitInfoIndex(comp_unit_info), oso_file, |
| oso_arch, oso_object ? &oso_object : nullptr, 0, |
| oso_object ? comp_unit_info->oso_mod_time : llvm::sys::TimePoint<>()); |
| } |
| } |
| if (comp_unit_info->oso_sp) |
| return comp_unit_info->oso_sp->module_sp.get(); |
| return nullptr; |
| } |
| |
| bool SymbolFileDWARFDebugMap::GetFileSpecForSO(uint32_t oso_idx, |
| FileSpec &file_spec) { |
| if (oso_idx < m_compile_unit_infos.size()) { |
| if (m_compile_unit_infos[oso_idx].so_file) { |
| file_spec = m_compile_unit_infos[oso_idx].so_file; |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| ObjectFile *SymbolFileDWARFDebugMap::GetObjectFileByOSOIndex(uint32_t oso_idx) { |
| Module *oso_module = GetModuleByOSOIndex(oso_idx); |
| if (oso_module) |
| return oso_module->GetObjectFile(); |
| return nullptr; |
| } |
| |
| SymbolFileDWARF * |
| SymbolFileDWARFDebugMap::GetSymbolFile(const SymbolContext &sc) { |
| return GetSymbolFile(*sc.comp_unit); |
| } |
| |
| SymbolFileDWARF * |
| SymbolFileDWARFDebugMap::GetSymbolFile(const CompileUnit &comp_unit) { |
| CompileUnitInfo *comp_unit_info = GetCompUnitInfo(comp_unit); |
| if (comp_unit_info) |
| return GetSymbolFileByCompUnitInfo(comp_unit_info); |
| return nullptr; |
| } |
| |
| ObjectFile *SymbolFileDWARFDebugMap::GetObjectFileByCompUnitInfo( |
| CompileUnitInfo *comp_unit_info) { |
| Module *oso_module = GetModuleByCompUnitInfo(comp_unit_info); |
| if (oso_module) |
| return oso_module->GetObjectFile(); |
| return nullptr; |
| } |
| |
| uint32_t SymbolFileDWARFDebugMap::GetCompUnitInfoIndex( |
| const CompileUnitInfo *comp_unit_info) { |
| if (!m_compile_unit_infos.empty()) { |
| const CompileUnitInfo *first_comp_unit_info = &m_compile_unit_infos.front(); |
| const CompileUnitInfo *last_comp_unit_info = &m_compile_unit_infos.back(); |
| if (first_comp_unit_info <= comp_unit_info && |
| comp_unit_info <= last_comp_unit_info) |
| return comp_unit_info - first_comp_unit_info; |
| } |
| return UINT32_MAX; |
| } |
| |
| SymbolFileDWARF * |
| SymbolFileDWARFDebugMap::GetSymbolFileByOSOIndex(uint32_t oso_idx) { |
| unsigned size = m_compile_unit_infos.size(); |
| if (oso_idx < size) |
| return GetSymbolFileByCompUnitInfo(&m_compile_unit_infos[oso_idx]); |
| return nullptr; |
| } |
| |
| SymbolFileDWARF * |
| SymbolFileDWARFDebugMap::GetSymbolFileAsSymbolFileDWARF(SymbolFile *sym_file) { |
| if (sym_file && |
| sym_file->GetPluginName() == SymbolFileDWARF::GetPluginNameStatic()) |
| return static_cast<SymbolFileDWARF *>(sym_file); |
| return nullptr; |
| } |
| |
| SymbolFileDWARF *SymbolFileDWARFDebugMap::GetSymbolFileByCompUnitInfo( |
| CompileUnitInfo *comp_unit_info) { |
| if (Module *oso_module = GetModuleByCompUnitInfo(comp_unit_info)) |
| return GetSymbolFileAsSymbolFileDWARF(oso_module->GetSymbolFile()); |
| return nullptr; |
| } |
| |
| uint32_t SymbolFileDWARFDebugMap::CalculateAbilities() { |
| // In order to get the abilities of this plug-in, we look at the list of |
| // N_OSO entries (object files) from the symbol table and make sure that |
| // these files exist and also contain valid DWARF. If we get any of that then |
| // we return the abilities of the first N_OSO's DWARF. |
| |
| const uint32_t oso_index_count = GetNumCompileUnits(); |
| if (oso_index_count > 0) { |
| InitOSO(); |
| if (!m_compile_unit_infos.empty()) { |
| return SymbolFile::CompileUnits | SymbolFile::Functions | |
| SymbolFile::Blocks | SymbolFile::GlobalVariables | |
| SymbolFile::LocalVariables | SymbolFile::VariableTypes | |
| SymbolFile::LineTables; |
| } |
| } |
| return 0; |
| } |
| |
| uint32_t SymbolFileDWARFDebugMap::CalculateNumCompileUnits() { |
| InitOSO(); |
| return m_compile_unit_infos.size(); |
| } |
| |
| CompUnitSP SymbolFileDWARFDebugMap::ParseCompileUnitAtIndex(uint32_t cu_idx) { |
| CompUnitSP comp_unit_sp; |
| const uint32_t cu_count = GetNumCompileUnits(); |
| |
| if (cu_idx < cu_count) { |
| Module *oso_module = GetModuleByCompUnitInfo(&m_compile_unit_infos[cu_idx]); |
| if (oso_module) { |
| FileSpec so_file_spec; |
| if (GetFileSpecForSO(cu_idx, so_file_spec)) { |
| // User zero as the ID to match the compile unit at offset zero in each |
| // .o file since each .o file can only have one compile unit for now. |
| lldb::user_id_t cu_id = 0; |
| m_compile_unit_infos[cu_idx].compile_unit_sp = |
| std::make_shared<CompileUnit>( |
| m_objfile_sp->GetModule(), nullptr, so_file_spec, cu_id, |
| eLanguageTypeUnknown, eLazyBoolCalculate); |
| |
| if (m_compile_unit_infos[cu_idx].compile_unit_sp) { |
| SetCompileUnitAtIndex(cu_idx, |
| m_compile_unit_infos[cu_idx].compile_unit_sp); |
| } |
| } |
| } |
| comp_unit_sp = m_compile_unit_infos[cu_idx].compile_unit_sp; |
| } |
| |
| return comp_unit_sp; |
| } |
| |
| SymbolFileDWARFDebugMap::CompileUnitInfo * |
| SymbolFileDWARFDebugMap::GetCompUnitInfo(const SymbolContext &sc) { |
| return GetCompUnitInfo(*sc.comp_unit); |
| } |
| |
| SymbolFileDWARFDebugMap::CompileUnitInfo * |
| SymbolFileDWARFDebugMap::GetCompUnitInfo(const CompileUnit &comp_unit) { |
| const uint32_t cu_count = GetNumCompileUnits(); |
| for (uint32_t i = 0; i < cu_count; ++i) { |
| if (&comp_unit == m_compile_unit_infos[i].compile_unit_sp.get()) |
| return &m_compile_unit_infos[i]; |
| } |
| return nullptr; |
| } |
| |
| size_t SymbolFileDWARFDebugMap::GetCompUnitInfosForModule( |
| const lldb_private::Module *module, |
| std::vector<CompileUnitInfo *> &cu_infos) { |
| const uint32_t cu_count = GetNumCompileUnits(); |
| for (uint32_t i = 0; i < cu_count; ++i) { |
| if (module == GetModuleByCompUnitInfo(&m_compile_unit_infos[i])) |
| cu_infos.push_back(&m_compile_unit_infos[i]); |
| } |
| return cu_infos.size(); |
| } |
| |
| lldb::LanguageType |
| SymbolFileDWARFDebugMap::ParseLanguage(CompileUnit &comp_unit) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit); |
| if (oso_dwarf) |
| return oso_dwarf->ParseLanguage(comp_unit); |
| return eLanguageTypeUnknown; |
| } |
| |
| XcodeSDK SymbolFileDWARFDebugMap::ParseXcodeSDK(CompileUnit &comp_unit) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit); |
| if (oso_dwarf) |
| return oso_dwarf->ParseXcodeSDK(comp_unit); |
| return {}; |
| } |
| |
| size_t SymbolFileDWARFDebugMap::ParseFunctions(CompileUnit &comp_unit) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit); |
| if (oso_dwarf) |
| return oso_dwarf->ParseFunctions(comp_unit); |
| return 0; |
| } |
| |
| bool SymbolFileDWARFDebugMap::ParseLineTable(CompileUnit &comp_unit) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit); |
| if (oso_dwarf) |
| return oso_dwarf->ParseLineTable(comp_unit); |
| return false; |
| } |
| |
| bool SymbolFileDWARFDebugMap::ParseDebugMacros(CompileUnit &comp_unit) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit); |
| if (oso_dwarf) |
| return oso_dwarf->ParseDebugMacros(comp_unit); |
| return false; |
| } |
| |
| bool SymbolFileDWARFDebugMap::ForEachExternalModule( |
| CompileUnit &comp_unit, |
| llvm::DenseSet<lldb_private::SymbolFile *> &visited_symbol_files, |
| llvm::function_ref<bool(Module &)> f) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit); |
| if (oso_dwarf) |
| return oso_dwarf->ForEachExternalModule(comp_unit, visited_symbol_files, f); |
| return false; |
| } |
| |
| bool SymbolFileDWARFDebugMap::ParseSupportFiles(CompileUnit &comp_unit, |
| FileSpecList &support_files) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit); |
| if (oso_dwarf) |
| return oso_dwarf->ParseSupportFiles(comp_unit, support_files); |
| return false; |
| } |
| |
| bool SymbolFileDWARFDebugMap::ParseIsOptimized(CompileUnit &comp_unit) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit); |
| if (oso_dwarf) |
| return oso_dwarf->ParseIsOptimized(comp_unit); |
| return false; |
| } |
| |
| bool SymbolFileDWARFDebugMap::ParseImportedModules( |
| const SymbolContext &sc, std::vector<SourceModule> &imported_modules) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFile(sc); |
| if (oso_dwarf) |
| return oso_dwarf->ParseImportedModules(sc, imported_modules); |
| return false; |
| } |
| |
| size_t SymbolFileDWARFDebugMap::ParseBlocksRecursive(Function &func) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| CompileUnit *comp_unit = func.GetCompileUnit(); |
| if (!comp_unit) |
| return 0; |
| |
| SymbolFileDWARF *oso_dwarf = GetSymbolFile(*comp_unit); |
| if (oso_dwarf) |
| return oso_dwarf->ParseBlocksRecursive(func); |
| return 0; |
| } |
| |
| size_t SymbolFileDWARFDebugMap::ParseTypes(CompileUnit &comp_unit) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFile(comp_unit); |
| if (oso_dwarf) |
| return oso_dwarf->ParseTypes(comp_unit); |
| return 0; |
| } |
| |
| size_t |
| SymbolFileDWARFDebugMap::ParseVariablesForContext(const SymbolContext &sc) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFile(sc); |
| if (oso_dwarf) |
| return oso_dwarf->ParseVariablesForContext(sc); |
| return 0; |
| } |
| |
| Type *SymbolFileDWARFDebugMap::ResolveTypeUID(lldb::user_id_t type_uid) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| const uint64_t oso_idx = GetOSOIndexFromUserID(type_uid); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx); |
| if (oso_dwarf) |
| return oso_dwarf->ResolveTypeUID(type_uid); |
| return nullptr; |
| } |
| |
| llvm::Optional<SymbolFile::ArrayInfo> |
| SymbolFileDWARFDebugMap::GetDynamicArrayInfoForUID( |
| lldb::user_id_t type_uid, const lldb_private::ExecutionContext *exe_ctx) { |
| const uint64_t oso_idx = GetOSOIndexFromUserID(type_uid); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx); |
| if (oso_dwarf) |
| return oso_dwarf->GetDynamicArrayInfoForUID(type_uid, exe_ctx); |
| return llvm::None; |
| } |
| |
| bool SymbolFileDWARFDebugMap::CompleteType(CompilerType &compiler_type) { |
| bool success = false; |
| if (compiler_type) { |
| ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { |
| if (oso_dwarf->HasForwardDeclForClangType(compiler_type)) { |
| oso_dwarf->CompleteType(compiler_type); |
| success = true; |
| return true; |
| } |
| return false; |
| }); |
| } |
| return success; |
| } |
| |
| uint32_t |
| SymbolFileDWARFDebugMap::ResolveSymbolContext(const Address &exe_so_addr, |
| SymbolContextItem resolve_scope, |
| SymbolContext &sc) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| uint32_t resolved_flags = 0; |
| Symtab *symtab = m_objfile_sp->GetSymtab(); |
| if (symtab) { |
| const addr_t exe_file_addr = exe_so_addr.GetFileAddress(); |
| |
| const DebugMap::Entry *debug_map_entry = |
| m_debug_map.FindEntryThatContains(exe_file_addr); |
| if (debug_map_entry) { |
| |
| sc.symbol = |
| symtab->SymbolAtIndex(debug_map_entry->data.GetExeSymbolIndex()); |
| |
| if (sc.symbol != nullptr) { |
| resolved_flags |= eSymbolContextSymbol; |
| |
| uint32_t oso_idx = 0; |
| CompileUnitInfo *comp_unit_info = |
| GetCompileUnitInfoForSymbolWithID(sc.symbol->GetID(), &oso_idx); |
| if (comp_unit_info) { |
| comp_unit_info->GetFileRangeMap(this); |
| Module *oso_module = GetModuleByCompUnitInfo(comp_unit_info); |
| if (oso_module) { |
| lldb::addr_t oso_file_addr = |
| exe_file_addr - debug_map_entry->GetRangeBase() + |
| debug_map_entry->data.GetOSOFileAddress(); |
| Address oso_so_addr; |
| if (oso_module->ResolveFileAddress(oso_file_addr, oso_so_addr)) { |
| resolved_flags |= |
| oso_module->GetSymbolFile()->ResolveSymbolContext( |
| oso_so_addr, resolve_scope, sc); |
| } |
| } |
| } |
| } |
| } |
| } |
| return resolved_flags; |
| } |
| |
| uint32_t SymbolFileDWARFDebugMap::ResolveSymbolContext( |
| const SourceLocationSpec &src_location_spec, |
| SymbolContextItem resolve_scope, SymbolContextList &sc_list) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| const uint32_t initial = sc_list.GetSize(); |
| const uint32_t cu_count = GetNumCompileUnits(); |
| |
| for (uint32_t i = 0; i < cu_count; ++i) { |
| // If we are checking for inlines, then we need to look through all compile |
| // units no matter if "file_spec" matches. |
| bool resolve = src_location_spec.GetCheckInlines(); |
| |
| if (!resolve) { |
| FileSpec so_file_spec; |
| if (GetFileSpecForSO(i, so_file_spec)) |
| resolve = |
| FileSpec::Match(src_location_spec.GetFileSpec(), so_file_spec); |
| } |
| if (resolve) { |
| SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(i); |
| if (oso_dwarf) |
| oso_dwarf->ResolveSymbolContext(src_location_spec, resolve_scope, |
| sc_list); |
| } |
| } |
| return sc_list.GetSize() - initial; |
| } |
| |
| void SymbolFileDWARFDebugMap::PrivateFindGlobalVariables( |
| ConstString name, const CompilerDeclContext &parent_decl_ctx, |
| const std::vector<uint32_t> |
| &indexes, // Indexes into the symbol table that match "name" |
| uint32_t max_matches, VariableList &variables) { |
| const size_t match_count = indexes.size(); |
| for (size_t i = 0; i < match_count; ++i) { |
| uint32_t oso_idx; |
| CompileUnitInfo *comp_unit_info = |
| GetCompileUnitInfoForSymbolWithIndex(indexes[i], &oso_idx); |
| if (comp_unit_info) { |
| SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx); |
| if (oso_dwarf) { |
| oso_dwarf->FindGlobalVariables(name, parent_decl_ctx, max_matches, |
| variables); |
| if (variables.GetSize() > max_matches) |
| break; |
| } |
| } |
| } |
| } |
| |
| void SymbolFileDWARFDebugMap::FindGlobalVariables( |
| ConstString name, const CompilerDeclContext &parent_decl_ctx, |
| uint32_t max_matches, VariableList &variables) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| uint32_t total_matches = 0; |
| |
| ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { |
| const uint32_t old_size = variables.GetSize(); |
| oso_dwarf->FindGlobalVariables(name, parent_decl_ctx, max_matches, |
| variables); |
| const uint32_t oso_matches = variables.GetSize() - old_size; |
| if (oso_matches > 0) { |
| total_matches += oso_matches; |
| |
| // Are we getting all matches? |
| if (max_matches == UINT32_MAX) |
| return false; // Yep, continue getting everything |
| |
| // If we have found enough matches, lets get out |
| if (max_matches >= total_matches) |
| return true; |
| |
| // Update the max matches for any subsequent calls to find globals in any |
| // other object files with DWARF |
| max_matches -= oso_matches; |
| } |
| |
| return false; |
| }); |
| } |
| |
| void SymbolFileDWARFDebugMap::FindGlobalVariables( |
| const RegularExpression ®ex, uint32_t max_matches, |
| VariableList &variables) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| uint32_t total_matches = 0; |
| ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { |
| const uint32_t old_size = variables.GetSize(); |
| oso_dwarf->FindGlobalVariables(regex, max_matches, variables); |
| |
| const uint32_t oso_matches = variables.GetSize() - old_size; |
| if (oso_matches > 0) { |
| total_matches += oso_matches; |
| |
| // Are we getting all matches? |
| if (max_matches == UINT32_MAX) |
| return false; // Yep, continue getting everything |
| |
| // If we have found enough matches, lets get out |
| if (max_matches >= total_matches) |
| return true; |
| |
| // Update the max matches for any subsequent calls to find globals in any |
| // other object files with DWARF |
| max_matches -= oso_matches; |
| } |
| |
| return false; |
| }); |
| } |
| |
| int SymbolFileDWARFDebugMap::SymbolContainsSymbolWithIndex( |
| uint32_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info) { |
| const uint32_t symbol_idx = *symbol_idx_ptr; |
| |
| if (symbol_idx < comp_unit_info->first_symbol_index) |
| return -1; |
| |
| if (symbol_idx <= comp_unit_info->last_symbol_index) |
| return 0; |
| |
| return 1; |
| } |
| |
| int SymbolFileDWARFDebugMap::SymbolContainsSymbolWithID( |
| user_id_t *symbol_idx_ptr, const CompileUnitInfo *comp_unit_info) { |
| const user_id_t symbol_id = *symbol_idx_ptr; |
| |
| if (symbol_id < comp_unit_info->first_symbol_id) |
| return -1; |
| |
| if (symbol_id <= comp_unit_info->last_symbol_id) |
| return 0; |
| |
| return 1; |
| } |
| |
| SymbolFileDWARFDebugMap::CompileUnitInfo * |
| SymbolFileDWARFDebugMap::GetCompileUnitInfoForSymbolWithIndex( |
| uint32_t symbol_idx, uint32_t *oso_idx_ptr) { |
| const uint32_t oso_index_count = m_compile_unit_infos.size(); |
| CompileUnitInfo *comp_unit_info = nullptr; |
| if (oso_index_count) { |
| comp_unit_info = (CompileUnitInfo *)bsearch( |
| &symbol_idx, &m_compile_unit_infos[0], m_compile_unit_infos.size(), |
| sizeof(CompileUnitInfo), |
| (ComparisonFunction)SymbolContainsSymbolWithIndex); |
| } |
| |
| if (oso_idx_ptr) { |
| if (comp_unit_info != nullptr) |
| *oso_idx_ptr = comp_unit_info - &m_compile_unit_infos[0]; |
| else |
| *oso_idx_ptr = UINT32_MAX; |
| } |
| return comp_unit_info; |
| } |
| |
| SymbolFileDWARFDebugMap::CompileUnitInfo * |
| SymbolFileDWARFDebugMap::GetCompileUnitInfoForSymbolWithID( |
| user_id_t symbol_id, uint32_t *oso_idx_ptr) { |
| const uint32_t oso_index_count = m_compile_unit_infos.size(); |
| CompileUnitInfo *comp_unit_info = nullptr; |
| if (oso_index_count) { |
| comp_unit_info = (CompileUnitInfo *)::bsearch( |
| &symbol_id, &m_compile_unit_infos[0], m_compile_unit_infos.size(), |
| sizeof(CompileUnitInfo), |
| (ComparisonFunction)SymbolContainsSymbolWithID); |
| } |
| |
| if (oso_idx_ptr) { |
| if (comp_unit_info != nullptr) |
| *oso_idx_ptr = comp_unit_info - &m_compile_unit_infos[0]; |
| else |
| *oso_idx_ptr = UINT32_MAX; |
| } |
| return comp_unit_info; |
| } |
| |
| static void RemoveFunctionsWithModuleNotEqualTo(const ModuleSP &module_sp, |
| SymbolContextList &sc_list, |
| uint32_t start_idx) { |
| // We found functions in .o files. Not all functions in the .o files will |
| // have made it into the final output file. The ones that did make it into |
| // the final output file will have a section whose module matches the module |
| // from the ObjectFile for this SymbolFile. When the modules don't match, |
| // then we have something that was in a .o file, but doesn't map to anything |
| // in the final executable. |
| uint32_t i = start_idx; |
| while (i < sc_list.GetSize()) { |
| SymbolContext sc; |
| sc_list.GetContextAtIndex(i, sc); |
| if (sc.function) { |
| const SectionSP section_sp( |
| sc.function->GetAddressRange().GetBaseAddress().GetSection()); |
| if (section_sp->GetModule() != module_sp) { |
| sc_list.RemoveContextAtIndex(i); |
| continue; |
| } |
| } |
| ++i; |
| } |
| } |
| |
| void SymbolFileDWARFDebugMap::FindFunctions( |
| const Module::LookupInfo &lookup_info, |
| const CompilerDeclContext &parent_decl_ctx, bool include_inlines, |
| SymbolContextList &sc_list) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| LLDB_SCOPED_TIMERF("SymbolFileDWARFDebugMap::FindFunctions (name = %s)", |
| lookup_info.GetLookupName().GetCString()); |
| |
| ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { |
| uint32_t sc_idx = sc_list.GetSize(); |
| oso_dwarf->FindFunctions(lookup_info, parent_decl_ctx, include_inlines, |
| sc_list); |
| if (!sc_list.IsEmpty()) { |
| RemoveFunctionsWithModuleNotEqualTo(m_objfile_sp->GetModule(), sc_list, |
| sc_idx); |
| } |
| return false; |
| }); |
| } |
| |
| void SymbolFileDWARFDebugMap::FindFunctions(const RegularExpression ®ex, |
| bool include_inlines, |
| SymbolContextList &sc_list) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| LLDB_SCOPED_TIMERF("SymbolFileDWARFDebugMap::FindFunctions (regex = '%s')", |
| regex.GetText().str().c_str()); |
| |
| ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { |
| uint32_t sc_idx = sc_list.GetSize(); |
| |
| oso_dwarf->FindFunctions(regex, include_inlines, sc_list); |
| if (!sc_list.IsEmpty()) { |
| RemoveFunctionsWithModuleNotEqualTo(m_objfile_sp->GetModule(), sc_list, |
| sc_idx); |
| } |
| return false; |
| }); |
| } |
| |
| void SymbolFileDWARFDebugMap::GetTypes(SymbolContextScope *sc_scope, |
| lldb::TypeClass type_mask, |
| TypeList &type_list) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| LLDB_SCOPED_TIMERF("SymbolFileDWARFDebugMap::GetTypes (type_mask = 0x%8.8x)", |
| type_mask); |
| |
| SymbolFileDWARF *oso_dwarf = nullptr; |
| if (sc_scope) { |
| SymbolContext sc; |
| sc_scope->CalculateSymbolContext(&sc); |
| |
| CompileUnitInfo *cu_info = GetCompUnitInfo(sc); |
| if (cu_info) { |
| oso_dwarf = GetSymbolFileByCompUnitInfo(cu_info); |
| if (oso_dwarf) |
| oso_dwarf->GetTypes(sc_scope, type_mask, type_list); |
| } |
| } else { |
| ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { |
| oso_dwarf->GetTypes(sc_scope, type_mask, type_list); |
| return false; |
| }); |
| } |
| } |
| |
| std::vector<std::unique_ptr<lldb_private::CallEdge>> |
| SymbolFileDWARFDebugMap::ParseCallEdgesInFunction(UserID func_id) { |
| uint32_t oso_idx = GetOSOIndexFromUserID(func_id.GetID()); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx); |
| if (oso_dwarf) |
| return oso_dwarf->ParseCallEdgesInFunction(func_id); |
| return {}; |
| } |
| |
| TypeSP SymbolFileDWARFDebugMap::FindDefinitionTypeForDWARFDeclContext( |
| const DWARFDeclContext &die_decl_ctx) { |
| TypeSP type_sp; |
| ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { |
| type_sp = oso_dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx); |
| return ((bool)type_sp); |
| }); |
| return type_sp; |
| } |
| |
| bool SymbolFileDWARFDebugMap::Supports_DW_AT_APPLE_objc_complete_type( |
| SymbolFileDWARF *skip_dwarf_oso) { |
| if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate) { |
| m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo; |
| ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { |
| if (skip_dwarf_oso != oso_dwarf && |
| oso_dwarf->Supports_DW_AT_APPLE_objc_complete_type(nullptr)) { |
| m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; |
| return true; |
| } |
| return false; |
| }); |
| } |
| return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes; |
| } |
| |
| TypeSP SymbolFileDWARFDebugMap::FindCompleteObjCDefinitionTypeForDIE( |
| const DWARFDIE &die, ConstString type_name, |
| bool must_be_implementation) { |
| // If we have a debug map, we will have an Objective-C symbol whose name is |
| // the type name and whose type is eSymbolTypeObjCClass. If we can find that |
| // symbol and find its containing parent, we can locate the .o file that will |
| // contain the implementation definition since it will be scoped inside the |
| // N_SO and we can then locate the SymbolFileDWARF that corresponds to that |
| // N_SO. |
| SymbolFileDWARF *oso_dwarf = nullptr; |
| TypeSP type_sp; |
| ObjectFile *module_objfile = m_objfile_sp->GetModule()->GetObjectFile(); |
| if (module_objfile) { |
| Symtab *symtab = module_objfile->GetSymtab(); |
| if (symtab) { |
| Symbol *objc_class_symbol = symtab->FindFirstSymbolWithNameAndType( |
| type_name, eSymbolTypeObjCClass, Symtab::eDebugAny, |
| Symtab::eVisibilityAny); |
| if (objc_class_symbol) { |
| // Get the N_SO symbol that contains the objective C class symbol as |
| // this should be the .o file that contains the real definition... |
| const Symbol *source_file_symbol = symtab->GetParent(objc_class_symbol); |
| |
| if (source_file_symbol && |
| source_file_symbol->GetType() == eSymbolTypeSourceFile) { |
| const uint32_t source_file_symbol_idx = |
| symtab->GetIndexForSymbol(source_file_symbol); |
| if (source_file_symbol_idx != UINT32_MAX) { |
| CompileUnitInfo *compile_unit_info = |
| GetCompileUnitInfoForSymbolWithIndex(source_file_symbol_idx, |
| nullptr); |
| if (compile_unit_info) { |
| oso_dwarf = GetSymbolFileByCompUnitInfo(compile_unit_info); |
| if (oso_dwarf) { |
| TypeSP type_sp(oso_dwarf->FindCompleteObjCDefinitionTypeForDIE( |
| die, type_name, must_be_implementation)); |
| if (type_sp) { |
| return type_sp; |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| // Only search all .o files for the definition if we don't need the |
| // implementation because otherwise, with a valid debug map we should have |
| // the ObjC class symbol and the code above should have found it. |
| if (!must_be_implementation) { |
| TypeSP type_sp; |
| |
| ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { |
| type_sp = oso_dwarf->FindCompleteObjCDefinitionTypeForDIE( |
| die, type_name, must_be_implementation); |
| return (bool)type_sp; |
| }); |
| |
| return type_sp; |
| } |
| return TypeSP(); |
| } |
| |
| void SymbolFileDWARFDebugMap::FindTypes( |
| ConstString name, const CompilerDeclContext &parent_decl_ctx, |
| uint32_t max_matches, |
| llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files, |
| TypeMap &types) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { |
| oso_dwarf->FindTypes(name, parent_decl_ctx, max_matches, |
| searched_symbol_files, types); |
| return types.GetSize() >= max_matches; |
| }); |
| } |
| |
| void SymbolFileDWARFDebugMap::FindTypes( |
| llvm::ArrayRef<CompilerContext> context, LanguageSet languages, |
| llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files, |
| TypeMap &types) { |
| LLDB_SCOPED_TIMER(); |
| ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { |
| oso_dwarf->FindTypes(context, languages, searched_symbol_files, types); |
| return false; |
| }); |
| } |
| |
| CompilerDeclContext SymbolFileDWARFDebugMap::FindNamespace( |
| lldb_private::ConstString name, |
| const CompilerDeclContext &parent_decl_ctx) { |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); |
| CompilerDeclContext matching_namespace; |
| |
| ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { |
| matching_namespace = oso_dwarf->FindNamespace(name, parent_decl_ctx); |
| |
| return (bool)matching_namespace; |
| }); |
| |
| return matching_namespace; |
| } |
| |
| void SymbolFileDWARFDebugMap::DumpClangAST(Stream &s) { |
| ForEachSymbolFile([&s](SymbolFileDWARF *oso_dwarf) -> bool { |
| oso_dwarf->DumpClangAST(s); |
| // The underlying assumption is that DumpClangAST(...) will obtain the |
| // AST from the underlying TypeSystem and therefore we only need to do |
| // this once and can stop after the first iteration hence we return true. |
| return true; |
| }); |
| } |
| |
| lldb::CompUnitSP |
| SymbolFileDWARFDebugMap::GetCompileUnit(SymbolFileDWARF *oso_dwarf) { |
| if (oso_dwarf) { |
| const uint32_t cu_count = GetNumCompileUnits(); |
| for (uint32_t cu_idx = 0; cu_idx < cu_count; ++cu_idx) { |
| SymbolFileDWARF *oso_symfile = |
| GetSymbolFileByCompUnitInfo(&m_compile_unit_infos[cu_idx]); |
| if (oso_symfile == oso_dwarf) { |
| if (!m_compile_unit_infos[cu_idx].compile_unit_sp) |
| m_compile_unit_infos[cu_idx].compile_unit_sp = |
| ParseCompileUnitAtIndex(cu_idx); |
| |
| return m_compile_unit_infos[cu_idx].compile_unit_sp; |
| } |
| } |
| } |
| llvm_unreachable("this shouldn't happen"); |
| } |
| |
| SymbolFileDWARFDebugMap::CompileUnitInfo * |
| SymbolFileDWARFDebugMap::GetCompileUnitInfo(SymbolFileDWARF *oso_dwarf) { |
| if (oso_dwarf) { |
| const uint32_t cu_count = GetNumCompileUnits(); |
| for (uint32_t cu_idx = 0; cu_idx < cu_count; ++cu_idx) { |
| SymbolFileDWARF *oso_symfile = |
| GetSymbolFileByCompUnitInfo(&m_compile_unit_infos[cu_idx]); |
| if (oso_symfile == oso_dwarf) { |
| return &m_compile_unit_infos[cu_idx]; |
| } |
| } |
| } |
| return nullptr; |
| } |
| |
| void SymbolFileDWARFDebugMap::SetCompileUnit(SymbolFileDWARF *oso_dwarf, |
| const CompUnitSP &cu_sp) { |
| if (oso_dwarf) { |
| const uint32_t cu_count = GetNumCompileUnits(); |
| for (uint32_t cu_idx = 0; cu_idx < cu_count; ++cu_idx) { |
| SymbolFileDWARF *oso_symfile = |
| GetSymbolFileByCompUnitInfo(&m_compile_unit_infos[cu_idx]); |
| if (oso_symfile == oso_dwarf) { |
| if (m_compile_unit_infos[cu_idx].compile_unit_sp) { |
| assert(m_compile_unit_infos[cu_idx].compile_unit_sp.get() == |
| cu_sp.get()); |
| } else { |
| m_compile_unit_infos[cu_idx].compile_unit_sp = cu_sp; |
| SetCompileUnitAtIndex(cu_idx, cu_sp); |
| } |
| } |
| } |
| } |
| } |
| |
| CompilerDeclContext |
| SymbolFileDWARFDebugMap::GetDeclContextForUID(lldb::user_id_t type_uid) { |
| const uint64_t oso_idx = GetOSOIndexFromUserID(type_uid); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx); |
| if (oso_dwarf) |
| return oso_dwarf->GetDeclContextForUID(type_uid); |
| return CompilerDeclContext(); |
| } |
| |
| CompilerDeclContext |
| SymbolFileDWARFDebugMap::GetDeclContextContainingUID(lldb::user_id_t type_uid) { |
| const uint64_t oso_idx = GetOSOIndexFromUserID(type_uid); |
| SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx); |
| if (oso_dwarf) |
| return oso_dwarf->GetDeclContextContainingUID(type_uid); |
| return CompilerDeclContext(); |
| } |
| |
| void SymbolFileDWARFDebugMap::ParseDeclsForContext( |
| lldb_private::CompilerDeclContext decl_ctx) { |
| ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { |
| oso_dwarf->ParseDeclsForContext(decl_ctx); |
| return true; // Keep iterating |
| }); |
| } |
| |
| bool SymbolFileDWARFDebugMap::AddOSOFileRange(CompileUnitInfo *cu_info, |
| lldb::addr_t exe_file_addr, |
| lldb::addr_t exe_byte_size, |
| lldb::addr_t oso_file_addr, |
| lldb::addr_t oso_byte_size) { |
| const uint32_t debug_map_idx = |
| m_debug_map.FindEntryIndexThatContains(exe_file_addr); |
| if (debug_map_idx != UINT32_MAX) { |
| DebugMap::Entry *debug_map_entry = |
| m_debug_map.FindEntryThatContains(exe_file_addr); |
| debug_map_entry->data.SetOSOFileAddress(oso_file_addr); |
| addr_t range_size = std::min<addr_t>(exe_byte_size, oso_byte_size); |
| if (range_size == 0) { |
| range_size = std::max<addr_t>(exe_byte_size, oso_byte_size); |
| if (range_size == 0) |
| range_size = 1; |
| } |
| cu_info->file_range_map.Append( |
| FileRangeMap::Entry(oso_file_addr, range_size, exe_file_addr)); |
| return true; |
| } |
| return false; |
| } |
| |
| void SymbolFileDWARFDebugMap::FinalizeOSOFileRanges(CompileUnitInfo *cu_info) { |
| cu_info->file_range_map.Sort(); |
| #if defined(DEBUG_OSO_DMAP) |
| const FileRangeMap &oso_file_range_map = cu_info->GetFileRangeMap(this); |
| const size_t n = oso_file_range_map.GetSize(); |
| printf("SymbolFileDWARFDebugMap::FinalizeOSOFileRanges (cu_info = %p) %s\n", |
| cu_info, cu_info->oso_sp->module_sp->GetFileSpec().GetPath().c_str()); |
| for (size_t i = 0; i < n; ++i) { |
| const FileRangeMap::Entry &entry = oso_file_range_map.GetEntryRef(i); |
| printf("oso [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 |
| ") ==> exe [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ")\n", |
| entry.GetRangeBase(), entry.GetRangeEnd(), entry.data, |
| entry.data + entry.GetByteSize()); |
| } |
| #endif |
| } |
| |
| lldb::addr_t |
| SymbolFileDWARFDebugMap::LinkOSOFileAddress(SymbolFileDWARF *oso_symfile, |
| lldb::addr_t oso_file_addr) { |
| CompileUnitInfo *cu_info = GetCompileUnitInfo(oso_symfile); |
| if (cu_info) { |
| const FileRangeMap::Entry *oso_range_entry = |
| cu_info->GetFileRangeMap(this).FindEntryThatContains(oso_file_addr); |
| if (oso_range_entry) { |
| const DebugMap::Entry *debug_map_entry = |
| m_debug_map.FindEntryThatContains(oso_range_entry->data); |
| if (debug_map_entry) { |
| const lldb::addr_t offset = |
| oso_file_addr - oso_range_entry->GetRangeBase(); |
| const lldb::addr_t exe_file_addr = |
| debug_map_entry->GetRangeBase() + offset; |
| return exe_file_addr; |
| } |
| } |
| } |
| return LLDB_INVALID_ADDRESS; |
| } |
| |
| bool SymbolFileDWARFDebugMap::LinkOSOAddress(Address &addr) { |
| // Make sure this address hasn't been fixed already |
| Module *exe_module = GetObjectFile()->GetModule().get(); |
| Module *addr_module = addr.GetModule().get(); |
| if (addr_module == exe_module) |
| return true; // Address is already in terms of the main executable module |
| |
| CompileUnitInfo *cu_info = GetCompileUnitInfo( |
| GetSymbolFileAsSymbolFileDWARF(addr_module->GetSymbolFile())); |
| if (cu_info) { |
| const lldb::addr_t oso_file_addr = addr.GetFileAddress(); |
| const FileRangeMap::Entry *oso_range_entry = |
| cu_info->GetFileRangeMap(this).FindEntryThatContains(oso_file_addr); |
| if (oso_range_entry) { |
| const DebugMap::Entry *debug_map_entry = |
| m_debug_map.FindEntryThatContains(oso_range_entry->data); |
| if (debug_map_entry) { |
| const lldb::addr_t offset = |
| oso_file_addr - oso_range_entry->GetRangeBase(); |
| const lldb::addr_t exe_file_addr = |
| debug_map_entry->GetRangeBase() + offset; |
| return exe_module->ResolveFileAddress(exe_file_addr, addr); |
| } |
| } |
| } |
| return true; |
| } |
| |
| LineTable *SymbolFileDWARFDebugMap::LinkOSOLineTable(SymbolFileDWARF *oso_dwarf, |
| LineTable *line_table) { |
| CompileUnitInfo *cu_info = GetCompileUnitInfo(oso_dwarf); |
| if (cu_info) |
| return line_table->LinkLineTable(cu_info->GetFileRangeMap(this)); |
| return nullptr; |
| } |
| |
| size_t |
| SymbolFileDWARFDebugMap::AddOSOARanges(SymbolFileDWARF *dwarf2Data, |
| DWARFDebugAranges *debug_aranges) { |
| size_t num_line_entries_added = 0; |
| if (debug_aranges && dwarf2Data) { |
| CompileUnitInfo *compile_unit_info = GetCompileUnitInfo(dwarf2Data); |
| if (compile_unit_info) { |
| const FileRangeMap &file_range_map = |
| compile_unit_info->GetFileRangeMap(this); |
| for (size_t idx = 0; idx < file_range_map.GetSize(); idx++) { |
| const FileRangeMap::Entry *entry = file_range_map.GetEntryAtIndex(idx); |
| if (entry) { |
| debug_aranges->AppendRange(dwarf2Data->GetID(), entry->GetRangeBase(), |
| entry->GetRangeEnd()); |
| num_line_entries_added++; |
| } |
| } |
| } |
| } |
| return num_line_entries_added; |
| } |
| |
| ModuleList SymbolFileDWARFDebugMap::GetDebugInfoModules() { |
| ModuleList oso_modules; |
| ForEachSymbolFile([&](SymbolFileDWARF *oso_dwarf) -> bool { |
| ObjectFile *oso_objfile = oso_dwarf->GetObjectFile(); |
| if (oso_objfile) { |
| ModuleSP module_sp = oso_objfile->GetModule(); |
| if (module_sp) |
| oso_modules.Append(module_sp); |
| } |
| return false; // Keep iterating |
| }); |
| return oso_modules; |
| } |
