5a7e1e978f
The commit changed Module dumping code to call SymbolFile::Dump directly, which meant that we were no longer showing the plugin name in the output (as that was done in the SymbolVendor). This adds the plugin name printing code to the SymbolFile dump method, and tweak the assertions in the PDB tests to match it correctly. llvm-svn: 367835
255 lines
8.4 KiB
C++
255 lines
8.4 KiB
C++
//===-- SymbolFile.cpp ------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Symbol/SymbolFile.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/PluginManager.h"
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#include "lldb/Symbol/CompileUnit.h"
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Symbol/TypeMap.h"
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#include "lldb/Symbol/TypeSystem.h"
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#include "lldb/Symbol/VariableList.h"
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#include "lldb/Utility/Log.h"
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#include "lldb/Utility/StreamString.h"
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#include "lldb/lldb-private.h"
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#include <future>
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using namespace lldb_private;
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using namespace lldb;
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void SymbolFile::PreloadSymbols() {
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// No-op for most implementations.
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}
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std::recursive_mutex &SymbolFile::GetModuleMutex() const {
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return GetObjectFile()->GetModule()->GetMutex();
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}
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ObjectFile *SymbolFile::GetMainObjectFile() {
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return m_objfile_sp->GetModule()->GetObjectFile();
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}
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SymbolFile *SymbolFile::FindPlugin(ObjectFileSP objfile_sp) {
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std::unique_ptr<SymbolFile> best_symfile_up;
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if (objfile_sp != nullptr) {
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// We need to test the abilities of this section list. So create what it
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// would be with this new objfile_sp.
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lldb::ModuleSP module_sp(objfile_sp->GetModule());
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if (module_sp) {
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// Default to the main module section list.
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ObjectFile *module_obj_file = module_sp->GetObjectFile();
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if (module_obj_file != objfile_sp.get()) {
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// Make sure the main object file's sections are created
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module_obj_file->GetSectionList();
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objfile_sp->CreateSections(*module_sp->GetUnifiedSectionList());
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}
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}
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// TODO: Load any plug-ins in the appropriate plug-in search paths and
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// iterate over all of them to find the best one for the job.
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uint32_t best_symfile_abilities = 0;
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SymbolFileCreateInstance create_callback;
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for (uint32_t idx = 0;
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(create_callback = PluginManager::GetSymbolFileCreateCallbackAtIndex(
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idx)) != nullptr;
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++idx) {
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std::unique_ptr<SymbolFile> curr_symfile_up(create_callback(objfile_sp));
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if (curr_symfile_up) {
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const uint32_t sym_file_abilities = curr_symfile_up->GetAbilities();
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if (sym_file_abilities > best_symfile_abilities) {
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best_symfile_abilities = sym_file_abilities;
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best_symfile_up.reset(curr_symfile_up.release());
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// If any symbol file parser has all of the abilities, then we should
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// just stop looking.
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if ((kAllAbilities & sym_file_abilities) == kAllAbilities)
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break;
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}
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}
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}
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if (best_symfile_up) {
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// Let the winning symbol file parser initialize itself more completely
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// now that it has been chosen
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best_symfile_up->InitializeObject();
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}
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}
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return best_symfile_up.release();
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}
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llvm::Expected<TypeSystem &>
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SymbolFile::GetTypeSystemForLanguage(lldb::LanguageType language) {
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auto type_system_or_err =
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m_objfile_sp->GetModule()->GetTypeSystemForLanguage(language);
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if (type_system_or_err) {
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type_system_or_err->SetSymbolFile(this);
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}
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return type_system_or_err;
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}
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uint32_t SymbolFile::ResolveSymbolContext(const FileSpec &file_spec,
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uint32_t line, bool check_inlines,
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lldb::SymbolContextItem resolve_scope,
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SymbolContextList &sc_list) {
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return 0;
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}
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uint32_t
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SymbolFile::FindGlobalVariables(ConstString name,
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const CompilerDeclContext *parent_decl_ctx,
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uint32_t max_matches, VariableList &variables) {
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return 0;
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}
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uint32_t SymbolFile::FindGlobalVariables(const RegularExpression ®ex,
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uint32_t max_matches,
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VariableList &variables) {
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return 0;
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}
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uint32_t SymbolFile::FindFunctions(ConstString name,
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const CompilerDeclContext *parent_decl_ctx,
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lldb::FunctionNameType name_type_mask,
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bool include_inlines, bool append,
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SymbolContextList &sc_list) {
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if (!append)
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sc_list.Clear();
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return 0;
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}
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uint32_t SymbolFile::FindFunctions(const RegularExpression ®ex,
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bool include_inlines, bool append,
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SymbolContextList &sc_list) {
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if (!append)
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sc_list.Clear();
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return 0;
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}
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void SymbolFile::GetMangledNamesForFunction(
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const std::string &scope_qualified_name,
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std::vector<ConstString> &mangled_names) {
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return;
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}
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uint32_t SymbolFile::FindTypes(
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ConstString name, const CompilerDeclContext *parent_decl_ctx,
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bool append, uint32_t max_matches,
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llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files,
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TypeMap &types) {
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if (!append)
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types.Clear();
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return 0;
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}
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size_t SymbolFile::FindTypes(const std::vector<CompilerContext> &context,
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bool append, TypeMap &types) {
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if (!append)
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types.Clear();
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return 0;
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}
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void SymbolFile::AssertModuleLock() {
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// The code below is too expensive to leave enabled in release builds. It's
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// enabled in debug builds or when the correct macro is set.
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#if defined(LLDB_CONFIGURATION_DEBUG)
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// We assert that we have to module lock by trying to acquire the lock from a
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// different thread. Note that we must abort if the result is true to
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// guarantee correctness.
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assert(std::async(std::launch::async,
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[this] { return this->GetModuleMutex().try_lock(); })
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.get() == false &&
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"Module is not locked");
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#endif
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}
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uint32_t SymbolFile::GetNumCompileUnits() {
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std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
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if (!m_compile_units) {
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// Create an array of compile unit shared pointers -- which will each
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// remain NULL until someone asks for the actual compile unit information.
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m_compile_units.emplace(CalculateNumCompileUnits());
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}
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return m_compile_units->size();
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}
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CompUnitSP SymbolFile::GetCompileUnitAtIndex(uint32_t idx) {
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std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
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uint32_t num = GetNumCompileUnits();
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if (idx >= num)
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return nullptr;
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lldb::CompUnitSP &cu_sp = (*m_compile_units)[idx];
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if (!cu_sp)
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cu_sp = ParseCompileUnitAtIndex(idx);
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return cu_sp;
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}
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void SymbolFile::SetCompileUnitAtIndex(uint32_t idx, const CompUnitSP &cu_sp) {
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std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
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const size_t num_compile_units = GetNumCompileUnits();
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assert(idx < num_compile_units);
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(void)num_compile_units;
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// Fire off an assertion if this compile unit already exists for now. The
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// partial parsing should take care of only setting the compile unit
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// once, so if this assertion fails, we need to make sure that we don't
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// have a race condition, or have a second parse of the same compile
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// unit.
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assert((*m_compile_units)[idx] == nullptr);
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(*m_compile_units)[idx] = cu_sp;
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}
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Symtab *SymbolFile::GetSymtab() {
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std::lock_guard<std::recursive_mutex> guard(GetModuleMutex());
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if (m_symtab)
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return m_symtab;
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// Fetch the symtab from the main object file.
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m_symtab = GetMainObjectFile()->GetSymtab();
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// Then add our symbols to it.
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if (m_symtab)
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AddSymbols(*m_symtab);
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return m_symtab;
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}
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void SymbolFile::SectionFileAddressesChanged() {
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ObjectFile *module_objfile = GetMainObjectFile();
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ObjectFile *symfile_objfile = GetObjectFile();
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if (symfile_objfile != module_objfile)
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symfile_objfile->SectionFileAddressesChanged();
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if (m_symtab)
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m_symtab->SectionFileAddressesChanged();
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}
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void SymbolFile::Dump(Stream &s) {
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s.Format("SymbolFile {0} ({1})\n", GetPluginName(),
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GetMainObjectFile()->GetFileSpec());
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s.PutCString("Types:\n");
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m_type_list.Dump(&s, /*show_context*/ false);
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s.PutChar('\n');
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s.PutCString("Compile units:\n");
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if (m_compile_units) {
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for (const CompUnitSP &cu_sp : *m_compile_units) {
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// We currently only dump the compile units that have been parsed
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if (cu_sp)
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cu_sp->Dump(&s, /*show_context*/ false);
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}
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}
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s.PutChar('\n');
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if (Symtab *symtab = GetSymtab())
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symtab->Dump(&s, nullptr, eSortOrderNone);
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}
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SymbolFile::RegisterInfoResolver::~RegisterInfoResolver() = default;
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