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372 lines
12 KiB
372 lines
12 KiB
//===-- CompileUnit.cpp ---------------------------------------------------===//
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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/CompileUnit.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Symbol/LineTable.h"
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#include "lldb/Symbol/SymbolFile.h"
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#include "lldb/Symbol/VariableList.h"
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#include "lldb/Target/Language.h"
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#include "lldb/Utility/Timer.h"
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using namespace lldb;
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using namespace lldb_private;
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CompileUnit::CompileUnit(const lldb::ModuleSP &module_sp, void *user_data,
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const char *pathname, const lldb::user_id_t cu_sym_id,
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lldb::LanguageType language,
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lldb_private::LazyBool is_optimized)
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: CompileUnit(module_sp, user_data, FileSpec(pathname), cu_sym_id, language,
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is_optimized) {}
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CompileUnit::CompileUnit(const lldb::ModuleSP &module_sp, void *user_data,
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const FileSpec &fspec, const lldb::user_id_t cu_sym_id,
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lldb::LanguageType language,
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lldb_private::LazyBool is_optimized)
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: ModuleChild(module_sp), UserID(cu_sym_id), m_user_data(user_data),
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m_language(language), m_flags(0), m_file_spec(fspec),
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m_is_optimized(is_optimized) {
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if (language != eLanguageTypeUnknown)
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m_flags.Set(flagsParsedLanguage);
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assert(module_sp);
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}
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void CompileUnit::CalculateSymbolContext(SymbolContext *sc) {
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sc->comp_unit = this;
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GetModule()->CalculateSymbolContext(sc);
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}
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ModuleSP CompileUnit::CalculateSymbolContextModule() { return GetModule(); }
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CompileUnit *CompileUnit::CalculateSymbolContextCompileUnit() { return this; }
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void CompileUnit::DumpSymbolContext(Stream *s) {
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GetModule()->DumpSymbolContext(s);
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s->Printf(", CompileUnit{0x%8.8" PRIx64 "}", GetID());
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}
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void CompileUnit::GetDescription(Stream *s,
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lldb::DescriptionLevel level) const {
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const char *language = Language::GetNameForLanguageType(m_language);
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*s << "id = " << (const UserID &)*this << ", file = \""
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<< this->GetPrimaryFile() << "\", language = \"" << language << '"';
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}
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void CompileUnit::ForeachFunction(
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llvm::function_ref<bool(const FunctionSP &)> lambda) const {
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std::vector<lldb::FunctionSP> sorted_functions;
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sorted_functions.reserve(m_functions_by_uid.size());
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for (auto &p : m_functions_by_uid)
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sorted_functions.push_back(p.second);
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llvm::sort(sorted_functions.begin(), sorted_functions.end(),
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[](const lldb::FunctionSP &a, const lldb::FunctionSP &b) {
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return a->GetID() < b->GetID();
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});
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for (auto &f : sorted_functions)
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if (lambda(f))
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return;
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}
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lldb::FunctionSP CompileUnit::FindFunction(
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llvm::function_ref<bool(const FunctionSP &)> matching_lambda) {
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static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
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Timer scoped_timer(func_cat, "CompileUnit::FindFunction");
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lldb::ModuleSP module = CalculateSymbolContextModule();
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if (!module)
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return {};
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SymbolFile *symbol_file = module->GetSymbolFile();
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if (!symbol_file)
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return {};
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// m_functions_by_uid is filled in lazily but we need all the entries.
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symbol_file->ParseFunctions(*this);
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for (auto &p : m_functions_by_uid) {
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if (matching_lambda(p.second))
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return p.second;
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}
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return {};
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}
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// Dump the current contents of this object. No functions that cause on demand
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// parsing of functions, globals, statics are called, so this is a good
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// function to call to get an idea of the current contents of the CompileUnit
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// object.
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void CompileUnit::Dump(Stream *s, bool show_context) const {
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const char *language = Language::GetNameForLanguageType(m_language);
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s->Printf("%p: ", static_cast<const void *>(this));
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s->Indent();
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*s << "CompileUnit" << static_cast<const UserID &>(*this) << ", language = \""
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<< language << "\", file = '" << GetPrimaryFile() << "'\n";
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// m_types.Dump(s);
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if (m_variables.get()) {
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s->IndentMore();
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m_variables->Dump(s, show_context);
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s->IndentLess();
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}
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if (!m_functions_by_uid.empty()) {
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s->IndentMore();
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ForeachFunction([&s, show_context](const FunctionSP &f) {
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f->Dump(s, show_context);
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return false;
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});
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s->IndentLess();
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s->EOL();
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}
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}
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// Add a function to this compile unit
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void CompileUnit::AddFunction(FunctionSP &funcSP) {
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m_functions_by_uid[funcSP->GetID()] = funcSP;
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}
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FunctionSP CompileUnit::FindFunctionByUID(lldb::user_id_t func_uid) {
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auto it = m_functions_by_uid.find(func_uid);
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if (it == m_functions_by_uid.end())
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return FunctionSP();
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return it->second;
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}
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lldb::LanguageType CompileUnit::GetLanguage() {
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if (m_language == eLanguageTypeUnknown) {
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if (m_flags.IsClear(flagsParsedLanguage)) {
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m_flags.Set(flagsParsedLanguage);
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if (SymbolFile *symfile = GetModule()->GetSymbolFile())
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m_language = symfile->ParseLanguage(*this);
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}
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}
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return m_language;
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}
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LineTable *CompileUnit::GetLineTable() {
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if (m_line_table_up == nullptr) {
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if (m_flags.IsClear(flagsParsedLineTable)) {
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m_flags.Set(flagsParsedLineTable);
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if (SymbolFile *symfile = GetModule()->GetSymbolFile())
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symfile->ParseLineTable(*this);
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}
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}
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return m_line_table_up.get();
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}
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void CompileUnit::SetLineTable(LineTable *line_table) {
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if (line_table == nullptr)
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m_flags.Clear(flagsParsedLineTable);
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else
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m_flags.Set(flagsParsedLineTable);
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m_line_table_up.reset(line_table);
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}
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void CompileUnit::SetSupportFiles(const FileSpecList &support_files) {
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m_support_files = support_files;
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}
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DebugMacros *CompileUnit::GetDebugMacros() {
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if (m_debug_macros_sp.get() == nullptr) {
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if (m_flags.IsClear(flagsParsedDebugMacros)) {
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m_flags.Set(flagsParsedDebugMacros);
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if (SymbolFile *symfile = GetModule()->GetSymbolFile())
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symfile->ParseDebugMacros(*this);
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}
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}
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return m_debug_macros_sp.get();
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}
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void CompileUnit::SetDebugMacros(const DebugMacrosSP &debug_macros_sp) {
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if (debug_macros_sp.get() == nullptr)
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m_flags.Clear(flagsParsedDebugMacros);
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else
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m_flags.Set(flagsParsedDebugMacros);
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m_debug_macros_sp = debug_macros_sp;
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}
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VariableListSP CompileUnit::GetVariableList(bool can_create) {
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if (m_variables.get() == nullptr && can_create) {
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SymbolContext sc;
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CalculateSymbolContext(&sc);
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assert(sc.module_sp);
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sc.module_sp->GetSymbolFile()->ParseVariablesForContext(sc);
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}
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return m_variables;
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}
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std::vector<uint32_t> FindFileIndexes(const FileSpecList &files, const FileSpec &file) {
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std::vector<uint32_t> result;
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uint32_t idx = -1;
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while ((idx = files.FindFileIndex(idx + 1, file, /*full=*/true)) !=
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UINT32_MAX)
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result.push_back(idx);
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return result;
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}
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uint32_t CompileUnit::FindLineEntry(uint32_t start_idx, uint32_t line,
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const FileSpec *file_spec_ptr, bool exact,
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LineEntry *line_entry_ptr) {
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if (!file_spec_ptr)
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file_spec_ptr = &GetPrimaryFile();
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std::vector<uint32_t> file_indexes = FindFileIndexes(GetSupportFiles(), *file_spec_ptr);
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if (file_indexes.empty())
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return UINT32_MAX;
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LineTable *line_table = GetLineTable();
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if (line_table)
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return line_table->FindLineEntryIndexByFileIndex(
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start_idx, file_indexes, line, exact, line_entry_ptr);
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return UINT32_MAX;
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}
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void CompileUnit::ResolveSymbolContext(const FileSpec &file_spec,
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uint32_t line, bool check_inlines,
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bool exact,
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SymbolContextItem resolve_scope,
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SymbolContextList &sc_list) {
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// First find all of the file indexes that match our "file_spec". If
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// "file_spec" has an empty directory, then only compare the basenames when
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// finding file indexes
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std::vector<uint32_t> file_indexes;
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bool file_spec_matches_cu_file_spec =
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FileSpec::Match(file_spec, this->GetPrimaryFile());
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// If we are not looking for inlined functions and our file spec doesn't
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// match then we are done...
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if (!file_spec_matches_cu_file_spec && !check_inlines)
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return;
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uint32_t file_idx =
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GetSupportFiles().FindFileIndex(0, file_spec, true);
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while (file_idx != UINT32_MAX) {
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file_indexes.push_back(file_idx);
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file_idx = GetSupportFiles().FindFileIndex(file_idx + 1, file_spec, true);
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}
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const size_t num_file_indexes = file_indexes.size();
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if (num_file_indexes == 0)
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return;
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SymbolContext sc(GetModule());
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sc.comp_unit = this;
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if (line == 0) {
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if (file_spec_matches_cu_file_spec && !check_inlines) {
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// only append the context if we aren't looking for inline call sites by
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// file and line and if the file spec matches that of the compile unit
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sc_list.Append(sc);
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}
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return;
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}
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LineTable *line_table = sc.comp_unit->GetLineTable();
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if (line_table == nullptr)
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return;
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uint32_t line_idx;
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LineEntry line_entry;
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if (num_file_indexes == 1) {
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// We only have a single support file that matches, so use the line
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// table function that searches for a line entries that match a single
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// support file index
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line_idx = line_table->FindLineEntryIndexByFileIndex(
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0, file_indexes.front(), line, exact, &line_entry);
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} else {
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// We found multiple support files that match "file_spec" so use the
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// line table function that searches for a line entries that match a
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// multiple support file indexes.
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line_idx = line_table->FindLineEntryIndexByFileIndex(0, file_indexes, line,
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exact, &line_entry);
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}
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// If "exact == true", then "found_line" will be the same as "line". If
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// "exact == false", the "found_line" will be the closest line entry
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// with a line number greater than "line" and we will use this for our
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// subsequent line exact matches below.
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uint32_t found_line = line_entry.line;
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while (line_idx != UINT32_MAX) {
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// If they only asked for the line entry, then we're done, we can
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// just copy that over. But if they wanted more than just the line
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// number, fill it in.
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if (resolve_scope == eSymbolContextLineEntry) {
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sc.line_entry = line_entry;
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} else {
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line_entry.range.GetBaseAddress().CalculateSymbolContext(&sc,
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resolve_scope);
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}
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sc_list.Append(sc);
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if (num_file_indexes == 1)
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line_idx = line_table->FindLineEntryIndexByFileIndex(
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line_idx + 1, file_indexes.front(), found_line, true, &line_entry);
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else
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line_idx = line_table->FindLineEntryIndexByFileIndex(
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line_idx + 1, file_indexes, found_line, true, &line_entry);
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}
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}
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bool CompileUnit::GetIsOptimized() {
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if (m_is_optimized == eLazyBoolCalculate) {
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m_is_optimized = eLazyBoolNo;
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if (SymbolFile *symfile = GetModule()->GetSymbolFile()) {
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if (symfile->ParseIsOptimized(*this))
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m_is_optimized = eLazyBoolYes;
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}
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}
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return m_is_optimized;
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}
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void CompileUnit::SetVariableList(VariableListSP &variables) {
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m_variables = variables;
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}
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const std::vector<SourceModule> &CompileUnit::GetImportedModules() {
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if (m_imported_modules.empty() &&
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m_flags.IsClear(flagsParsedImportedModules)) {
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m_flags.Set(flagsParsedImportedModules);
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if (SymbolFile *symfile = GetModule()->GetSymbolFile()) {
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SymbolContext sc;
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CalculateSymbolContext(&sc);
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symfile->ParseImportedModules(sc, m_imported_modules);
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}
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}
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return m_imported_modules;
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}
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bool CompileUnit::ForEachExternalModule(
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llvm::DenseSet<SymbolFile *> &visited_symbol_files,
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llvm::function_ref<bool(Module &)> lambda) {
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if (SymbolFile *symfile = GetModule()->GetSymbolFile())
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return symfile->ForEachExternalModule(*this, visited_symbol_files, lambda);
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return false;
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}
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const FileSpecList &CompileUnit::GetSupportFiles() {
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if (m_support_files.GetSize() == 0) {
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if (m_flags.IsClear(flagsParsedSupportFiles)) {
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m_flags.Set(flagsParsedSupportFiles);
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if (SymbolFile *symfile = GetModule()->GetSymbolFile())
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symfile->ParseSupportFiles(*this, m_support_files);
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}
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}
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return m_support_files;
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}
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void *CompileUnit::GetUserData() const { return m_user_data; }
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