| //===-- 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 "DWARFCompileUnit.h" | |
| #include "DWARFDebugAranges.h" | |
| #include "DWARFDebugInfo.h" | |
| #include "lldb/Core/Module.h" | |
| #include "lldb/Core/ModuleList.h" | |
| #include "lldb/Core/PluginManager.h" | |
| #include "lldb/Core/Progress.h" | |
| #include "lldb/Core/Section.h" | |
| #include "lldb/Host/FileSystem.h" | |
| #include "lldb/Utility/RangeMap.h" | |
| #include "lldb/Utility/RegularExpression.h" | |
| #include "lldb/Utility/StreamString.h" | |
| #include "lldb/Utility/StructuredData.h" | |
| #include "lldb/Utility/Timer.h" | |
| //#define DEBUG_OSO_DMAP // DO NOT CHECKIN WITH THIS NOT COMMENTED OUT | |
| #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/ADT/STLExtras.h" | |
| #include "llvm/ADT/StringRef.h" | |
| #include "llvm/Support/ErrorExtras.h" | |
| #include "llvm/Support/ScopedPrinter.h" | |
| #include "lldb/Target/StackFrame.h" | |
| #include "LogChannelDWARF.h" | |
| #include "SymbolFileDWARF.h" | |
| #include "lldb/lldb-private-enumerations.h" | |
| #include <memory> | |
| #include <optional> | |
| using namespace lldb; | |
| using namespace lldb_private; | |
| using namespace lldb_private::plugin::dwarf; | |
| 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) { | |
| const 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 | |
| const 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 | |
| const 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; | |
| } | |
| namespace lldb_private::plugin { | |
| namespace dwarf { | |
| class DebugMapModule : public Module { | |
| public: | |
| DebugMapModule(const ModuleSP &exe_module_sp, uint32_t cu_idx, | |
| const FileSpec &file_spec, const ArchSpec &arch, | |
| 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->SetFileIndex((uint64_t)m_cu_idx); | |
| } | |
| return symfile; | |
| } | |
| } | |
| } | |
| return nullptr; | |
| } | |
| protected: | |
| ModuleWP m_exe_module_wp; | |
| const uint32_t m_cu_idx; | |
| }; | |
| } // namespace dwarf | |
| } // namespace lldb_private::plugin | |
| 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() {} | |
| 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) | |
| return; | |
| 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) | |
| return; | |
| 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 : | |
| llvm::concat<uint32_t>(m_func_indexes, 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().GetStringRef(), 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 <= i || sibling_idx == UINT32_MAX) { | |
| m_objfile_sp->GetModule()->ReportError( | |
| "N_SO in symbol with UID {0} 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[{0}] 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[{0}], 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 ({0}) for N_OSO " | |
| "symbol[{1}], " | |
| "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 ({0}) for N_OSO " | |
| "symbol[{1}], " | |
| "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) { | |
| comp_unit_info->oso_load_error = Status::FromErrorStringWithFormat( | |
| "debug map object file \"%s\" changed (actual: 0x%8.8x, debug " | |
| "map: 0x%8.8x) since this executable was linked, debug info " | |
| "will not be loaded", | |
| oso_file.GetPath().c_str(), | |
| (uint32_t)llvm::sys::toTimeT(oso_mod_time), | |
| (uint32_t)llvm::sys::toTimeT(comp_unit_info->oso_mod_time)); | |
| obj_file->GetModule()->ReportError( | |
| "{0}", comp_unit_info->oso_load_error.AsCString()); | |
| return nullptr; | |
| } | |
| } else { | |
| const bool must_exist = true; | |
| if (!ObjectFile::SplitArchivePathWithObject(oso_path, oso_file, | |
| oso_object, must_exist)) { | |
| comp_unit_info->oso_load_error = Status::FromErrorStringWithFormat( | |
| "debug map object file \"%s\" containing debug info does not " | |
| "exist, debug info will not be loaded", | |
| comp_unit_info->oso_path.GetCString()); | |
| 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, 0, | |
| oso_object ? comp_unit_info->oso_mod_time : llvm::sys::TimePoint<>()); | |
| if (oso_object && !comp_unit_info->oso_sp->module_sp->GetObjectFile() && | |
| FileSystem::Instance().Exists(oso_file)) { | |
| // If we are loading a .o file from a .a file the "oso_object" will | |
| // have a valid value name and if the .a file exists, either the .o | |
| // file didn't exist in the .a file or the mod time didn't match. | |
| comp_unit_info->oso_load_error = Status::FromErrorStringWithFormat( | |
| "\"%s\" object from the \"%s\" archive: " | |
| "either the .o file doesn't exist in the archive or the " | |
| "modification time (0x%8.8x) of the .o file doesn't match", | |
| oso_object.AsCString(""), oso_file.GetPath().c_str(), | |
| (uint32_t)llvm::sys::toTimeT(comp_unit_info->oso_mod_time)); | |
| } | |
| } | |
| } | |
| 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) { | |
| auto &cu_info = m_compile_unit_infos[cu_idx]; | |
| Module *oso_module = GetModuleByCompUnitInfo(&cu_info); | |
| if (oso_module) { | |
| FileSpec so_file_spec; | |
| if (GetFileSpecForSO(cu_idx, so_file_spec)) { | |
| // Apply the module's source path remappings so that compile units | |
| // created from N_SO stabs (which may contain paths rewritten by | |
| // -fdebug-prefix-map at build time) report their real on-disk paths. | |
| // This mirrors what MakeAbsoluteAndRemap does for the dSYM case. | |
| if (ModuleSP module_sp = m_objfile_sp->GetModule()) | |
| if (auto remapped = | |
| module_sp->RemapSourceFile(so_file_spec.GetPath())) | |
| so_file_spec.SetFile(*remapped, FileSpec::Style::native); | |
| // User zero as the ID to match the compile unit at offset zero in each | |
| // .o file. | |
| lldb::user_id_t cu_id = 0; | |
| cu_info.compile_units_sps.push_back(std::make_shared<CompileUnit>( | |
| m_objfile_sp->GetModule(), nullptr, | |
| std::make_shared<SupportFile>(so_file_spec), cu_id, | |
| eLanguageTypeUnknown, eLazyBoolCalculate)); | |
| cu_info.id_to_index_map.insert({0, 0}); | |
| SetCompileUnitAtIndex(cu_idx, cu_info.compile_units_sps[0]); | |
| // If there's a symbol file also register all the extra compile units. | |
| if (SymbolFileDWARF *oso_symfile = | |
| GetSymbolFileByCompUnitInfo(&cu_info)) { | |
| auto num_dwarf_units = oso_symfile->DebugInfo().GetNumUnits(); | |
| for (size_t i = 0; i < num_dwarf_units; ++i) { | |
| auto *dwarf_unit = oso_symfile->DebugInfo().GetUnitAtIndex(i); | |
| if (auto *dwarf_cu = llvm::dyn_cast<DWARFCompileUnit>(dwarf_unit)) { | |
| // The "main" one was already registered. | |
| if (dwarf_cu->GetID() == 0) | |
| continue; | |
| cu_info.compile_units_sps.push_back(std::make_shared<CompileUnit>( | |
| m_objfile_sp->GetModule(), nullptr, | |
| std::make_shared<SupportFile>(so_file_spec), | |
| dwarf_cu->GetID(), eLanguageTypeUnknown, eLazyBoolCalculate)); | |
| cu_info.id_to_index_map.insert( | |
| {dwarf_cu->GetID(), cu_info.compile_units_sps.size() - 1}); | |
| } | |
| } | |
| } | |
| } | |
| } | |
| if (!cu_info.compile_units_sps.empty()) | |
| comp_unit_sp = cu_info.compile_units_sps[0]; | |
| } | |
| 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) { | |
| auto &id_to_index_map = m_compile_unit_infos[i].id_to_index_map; | |
| auto it = id_to_index_map.find(comp_unit.GetID()); | |
| if (it != id_to_index_map.end() && | |
| &comp_unit == | |
| m_compile_unit_infos[i].compile_units_sps[it->getSecond()].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 {}; | |
| } | |
| llvm::SmallSet<lldb::LanguageType, 4> | |
| SymbolFileDWARFDebugMap::ParseAllLanguages( | |
| lldb_private::CompileUnit &comp_unit) { | |
| llvm::SmallSet<lldb::LanguageType, 4> langs; | |
| auto *info = GetCompUnitInfo(comp_unit); | |
| for (auto &comp_unit : info->compile_units_sps) { | |
| langs.insert(comp_unit->GetLanguage()); | |
| } | |
| return langs; | |
| } | |
| 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; | |
| } | |
| void SymbolFileDWARFDebugMap::ForEachSymbolFile( | |
| std::string description, | |
| std::function<IterationAction(SymbolFileDWARF &)> closure) { | |
| const size_t num_oso_idxs = m_compile_unit_infos.size(); | |
| Progress progress(std::move(description), "", num_oso_idxs, | |
| /*debugger=*/nullptr, | |
| Progress::kDefaultHighFrequencyReportTime); | |
| for (uint32_t oso_idx = 0; oso_idx < num_oso_idxs; ++oso_idx) { | |
| if (SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx)) { | |
| progress.Increment(oso_idx, oso_dwarf->GetObjectName()); | |
| if (closure(*oso_dwarf) == IterationAction::Stop) | |
| return; | |
| } | |
| } | |
| } | |
| 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, SupportFileList &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; | |
| } | |
| std::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 std::nullopt; | |
| } | |
| bool SymbolFileDWARFDebugMap::CompleteType(CompilerType &compiler_type) { | |
| bool success = false; | |
| if (compiler_type) { | |
| ForEachSymbolFile("Completing type", [&](SymbolFileDWARF &oso_dwarf) { | |
| if (oso_dwarf.HasForwardDeclForCompilerType(compiler_type)) { | |
| oso_dwarf.CompleteType(compiler_type); | |
| success = true; | |
| return IterationAction::Stop; | |
| } | |
| return IterationAction::Continue; | |
| }); | |
| } | |
| 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)) { | |
| if (SymbolFile *sym_file = oso_module->GetSymbolFile()) { | |
| resolved_flags |= sym_file->ResolveSymbolContext( | |
| oso_so_addr, resolve_scope, sc); | |
| } else { | |
| ObjectFile *obj_file = GetObjectFile(); | |
| LLDB_LOG(GetLog(DWARFLog::DebugMap), | |
| "Failed to get symfile for OSO: {0} in module: {1}", | |
| oso_module->GetFileSpec(), | |
| obj_file ? obj_file->GetFileSpec() | |
| : FileSpec("unknown")); | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| 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( | |
| "Looking up global variables", [&](SymbolFileDWARF &oso_dwarf) { | |
| 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; | |
| // If we are getting all matches, keep going. | |
| if (max_matches == UINT32_MAX) | |
| return IterationAction::Continue; | |
| // If we have found enough matches, lets get out | |
| if (max_matches >= total_matches) | |
| return IterationAction::Stop; | |
| // Update the max matches for any subsequent calls to find globals in | |
| // any other object files with DWARF | |
| max_matches -= oso_matches; | |
| } | |
| return IterationAction::Continue; | |
| }); | |
| } | |
| 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( | |
| "Looking up global variables", [&](SymbolFileDWARF &oso_dwarf) { | |
| 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; | |
| // If we are getting all matches, keep going. | |
| if (max_matches == UINT32_MAX) | |
| return IterationAction::Continue; | |
| // If we have found enough matches, lets get out | |
| if (max_matches >= total_matches) | |
| return IterationAction::Stop; | |
| // Update the max matches for any subsequent calls to find globals in | |
| // any other object files with DWARF | |
| max_matches -= oso_matches; | |
| } | |
| return IterationAction::Continue; | |
| }); | |
| } | |
| 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->GetAddress().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("Looking up functions", [&](SymbolFileDWARF &oso_dwarf) { | |
| 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 IterationAction::Continue; | |
| }); | |
| } | |
| 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("Looking up functions", [&](SymbolFileDWARF &oso_dwarf) { | |
| 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 IterationAction::Continue; | |
| }); | |
| } | |
| 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("Looking up types", [&](SymbolFileDWARF &oso_dwarf) { | |
| oso_dwarf.GetTypes(sc_scope, type_mask, type_list); | |
| return IterationAction::Continue; | |
| }); | |
| } | |
| } | |
| std::vector<std::unique_ptr<lldb_private::CallEdge>> | |
| SymbolFileDWARFDebugMap::ParseCallEdgesInFunction( | |
| lldb_private::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 {}; | |
| } | |
| DWARFDIE SymbolFileDWARFDebugMap::FindDefinitionDIE(const DWARFDIE &die) { | |
| DWARFDIE result; | |
| ForEachSymbolFile( | |
| "Looking up type definition", [&](SymbolFileDWARF &oso_dwarf) { | |
| result = oso_dwarf.FindDefinitionDIE(die); | |
| return result ? IterationAction::Stop : IterationAction::Continue; | |
| }); | |
| return result; | |
| } | |
| 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( | |
| "Looking up Objective-C definition", [&](SymbolFileDWARF &oso_dwarf) { | |
| type_sp = oso_dwarf.FindCompleteObjCDefinitionTypeForDIE( | |
| die, type_name, must_be_implementation); | |
| return type_sp ? IterationAction::Stop : IterationAction::Continue; | |
| }); | |
| return type_sp; | |
| } | |
| return TypeSP(); | |
| } | |
| void SymbolFileDWARFDebugMap::FindTypes(const TypeQuery &query, | |
| TypeResults &results) { | |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); | |
| ForEachSymbolFile("Looking up type", [&](SymbolFileDWARF &oso_dwarf) { | |
| oso_dwarf.FindTypes(query, results); | |
| return results.Done(query) ? IterationAction::Stop | |
| : IterationAction::Continue; | |
| }); | |
| } | |
| CompilerDeclContext SymbolFileDWARFDebugMap::FindNamespace( | |
| lldb_private::ConstString name, const CompilerDeclContext &parent_decl_ctx, | |
| bool only_root_namespaces) { | |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); | |
| CompilerDeclContext matching_namespace; | |
| ForEachSymbolFile("Looking up namespace", [&](SymbolFileDWARF &oso_dwarf) { | |
| matching_namespace = | |
| oso_dwarf.FindNamespace(name, parent_decl_ctx, only_root_namespaces); | |
| return matching_namespace ? IterationAction::Stop | |
| : IterationAction::Continue; | |
| }); | |
| return matching_namespace; | |
| } | |
| void SymbolFileDWARFDebugMap::DumpClangAST(Stream &s, llvm::StringRef filter, | |
| bool show_color) { | |
| ForEachSymbolFile("Dumping clang AST", [&](SymbolFileDWARF &oso_dwarf) { | |
| oso_dwarf.DumpClangAST(s, filter, show_color); | |
| // 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 IterationAction::Stop; | |
| }); | |
| } | |
| bool SymbolFileDWARFDebugMap::GetSeparateDebugInfo( | |
| lldb_private::StructuredData::Dictionary &d, bool errors_only, | |
| bool load_all_debug_info) { | |
| StructuredData::Array separate_debug_info_files; | |
| const uint32_t cu_count = GetNumCompileUnits(); | |
| for (uint32_t cu_idx = 0; cu_idx < cu_count; ++cu_idx) { | |
| const auto &info = m_compile_unit_infos[cu_idx]; | |
| StructuredData::DictionarySP oso_data = | |
| std::make_shared<StructuredData::Dictionary>(); | |
| oso_data->AddStringItem("so_file", info.so_file.GetPath()); | |
| oso_data->AddStringItem("oso_path", info.oso_path); | |
| oso_data->AddIntegerItem("oso_mod_time", | |
| (uint32_t)llvm::sys::toTimeT(info.oso_mod_time)); | |
| bool loaded_successfully = false; | |
| if (GetModuleByOSOIndex(cu_idx)) { | |
| // If we have a valid pointer to the module, we successfully | |
| // loaded the oso if there are no load errors. | |
| if (!info.oso_load_error.Fail()) { | |
| loaded_successfully = true; | |
| } | |
| } | |
| if (!loaded_successfully) { | |
| oso_data->AddStringItem("error", info.oso_load_error.AsCString()); | |
| } | |
| oso_data->AddBooleanItem("loaded", loaded_successfully); | |
| if (!errors_only || oso_data->HasKey("error")) | |
| separate_debug_info_files.AddItem(oso_data); | |
| } | |
| d.AddStringItem("type", "oso"); | |
| d.AddStringItem("symfile", GetMainObjectFile()->GetFileSpec().GetPath()); | |
| d.AddItem("separate-debug-info-files", | |
| std::make_shared<StructuredData::Array>( | |
| std::move(separate_debug_info_files))); | |
| return true; | |
| } | |
| lldb::CompUnitSP | |
| SymbolFileDWARFDebugMap::GetCompileUnit(SymbolFileDWARF *oso_dwarf, | |
| DWARFCompileUnit &dwarf_cu) { | |
| 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_units_sps.empty()) | |
| ParseCompileUnitAtIndex(cu_idx); | |
| auto &id_to_index_map = m_compile_unit_infos[cu_idx].id_to_index_map; | |
| auto it = id_to_index_map.find(dwarf_cu.GetID()); | |
| if (it != id_to_index_map.end()) | |
| return m_compile_unit_infos[cu_idx] | |
| .compile_units_sps[it->getSecond()]; | |
| } | |
| } | |
| } | |
| 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_units_sps.empty()) { | |
| assert(m_compile_unit_infos[cu_idx].compile_units_sps[0].get() == | |
| cu_sp.get()); | |
| } else { | |
| assert(cu_sp->GetID() == 0 && | |
| "Setting first compile unit but with id different than 0!"); | |
| auto &compile_units_sps = | |
| m_compile_unit_infos[cu_idx].compile_units_sps; | |
| compile_units_sps.push_back(cu_sp); | |
| m_compile_unit_infos[cu_idx].id_to_index_map.insert( | |
| {cu_sp->GetID(), compile_units_sps.size() - 1}); | |
| SetCompileUnitAtIndex(cu_idx, cu_sp); | |
| } | |
| } | |
| } | |
| } | |
| } | |
| CompilerDeclContext | |
| SymbolFileDWARFDebugMap::GetDeclContextForUID(lldb::user_id_t type_uid) { | |
| const uint64_t oso_idx = GetOSOIndexFromUserID(type_uid); | |
| if (SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx)) | |
| return oso_dwarf->GetDeclContextForUID(type_uid); | |
| return {}; | |
| } | |
| CompilerDeclContext | |
| SymbolFileDWARFDebugMap::GetDeclContextContainingUID(lldb::user_id_t type_uid) { | |
| const uint64_t oso_idx = GetOSOIndexFromUserID(type_uid); | |
| if (SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx)) | |
| return oso_dwarf->GetDeclContextContainingUID(type_uid); | |
| return {}; | |
| } | |
| std::vector<CompilerContext> | |
| SymbolFileDWARFDebugMap::GetCompilerContextForUID(lldb::user_id_t type_uid) { | |
| const uint64_t oso_idx = GetOSOIndexFromUserID(type_uid); | |
| if (SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx)) | |
| return oso_dwarf->GetCompilerContextForUID(type_uid); | |
| return {}; | |
| } | |
| void SymbolFileDWARFDebugMap::ParseDeclsForContext( | |
| lldb_private::CompilerDeclContext decl_ctx) { | |
| ForEachSymbolFile("Parsing declarations", [&](SymbolFileDWARF &oso_dwarf) { | |
| oso_dwarf.ParseDeclsForContext(decl_ctx); | |
| return IterationAction::Continue; | |
| }); | |
| } | |
| 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->GetFileIndex(), | |
| entry->GetRangeBase(), | |
| entry->GetRangeEnd()); | |
| num_line_entries_added++; | |
| } | |
| } | |
| } | |
| } | |
| return num_line_entries_added; | |
| } | |
| ModuleList SymbolFileDWARFDebugMap::GetDebugInfoModules() { | |
| ModuleList oso_modules; | |
| ForEachSymbolFile("Parsing modules", [&](SymbolFileDWARF &oso_dwarf) { | |
| ObjectFile *oso_objfile = oso_dwarf.GetObjectFile(); | |
| if (oso_objfile) { | |
| ModuleSP module_sp = oso_objfile->GetModule(); | |
| if (module_sp) | |
| oso_modules.Append(module_sp); | |
| } | |
| return IterationAction::Continue; | |
| }); | |
| return oso_modules; | |
| } | |
| Status SymbolFileDWARFDebugMap::CalculateFrameVariableError(StackFrame &frame) { | |
| std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); | |
| // We need to make sure that our PC value from the frame matches the module | |
| // for this object file since we will lookup the PC file address in the debug | |
| // map below. | |
| Address pc_addr = frame.GetFrameCodeAddress(); | |
| if (pc_addr.GetModule() == m_objfile_sp->GetModule()) { | |
| Symtab *symtab = m_objfile_sp->GetSymtab(); | |
| if (symtab) { | |
| const DebugMap::Entry *debug_map_entry = | |
| m_debug_map.FindEntryThatContains(pc_addr.GetFileAddress()); | |
| if (debug_map_entry) { | |
| const Symbol *symbol = | |
| symtab->SymbolAtIndex(debug_map_entry->data.GetExeSymbolIndex()); | |
| if (symbol) { | |
| uint32_t oso_idx = 0; | |
| CompileUnitInfo *comp_unit_info = | |
| GetCompileUnitInfoForSymbolWithID(symbol->GetID(), &oso_idx); | |
| if (comp_unit_info) { | |
| Module *oso_module = GetModuleByCompUnitInfo(comp_unit_info); | |
| if (oso_module) { | |
| // Check the .o file's DWARF in case it has an error to display. | |
| SymbolFile *oso_sym_file = oso_module->GetSymbolFile(); | |
| if (oso_sym_file) | |
| return oso_sym_file->GetFrameVariableError(frame); | |
| } | |
| // If we don't have a valid OSO module here, then something went | |
| // wrong as we have a symbol for the address in the debug map, but | |
| // we weren't able to open the .o file. Display an appropriate | |
| // error | |
| if (comp_unit_info->oso_load_error.Fail()) | |
| return comp_unit_info->oso_load_error.Clone(); | |
| else | |
| return Status::FromErrorStringWithFormat( | |
| "unable to load debug map object file \"%s\" " | |
| "exist, debug info will not be loaded", | |
| comp_unit_info->oso_path.GetCString()); | |
| } | |
| } | |
| } | |
| } | |
| } | |
| return Status(); | |
| } | |
| void SymbolFileDWARFDebugMap::GetCompileOptions( | |
| std::unordered_map<lldb::CompUnitSP, lldb_private::Args> &args) { | |
| ForEachSymbolFile("Parsing compile options", [&](SymbolFileDWARF &oso_dwarf) { | |
| oso_dwarf.GetCompileOptions(args); | |
| return IterationAction::Continue; | |
| }); | |
| } | |
| llvm::Expected<SymbolContext> | |
| SymbolFileDWARFDebugMap::ResolveFunctionCallLabel(FunctionCallLabel &label) { | |
| const uint64_t oso_idx = GetOSOIndexFromUserID(label.symbol_id); | |
| SymbolFileDWARF *oso_dwarf = GetSymbolFileByOSOIndex(oso_idx); | |
| if (!oso_dwarf) | |
| return llvm::createStringErrorV( | |
| "couldn't find symbol file for {0} in debug-map.", label); | |
| return oso_dwarf->ResolveFunctionCallLabel(label); | |
| } |