435 lines
16 KiB
C++
435 lines
16 KiB
C++
//===-- CompileUnit.cpp -----------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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/SymbolVendor.h"
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#include "lldb/Symbol/VariableList.h"
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#include "lldb/Target/Language.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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: ModuleChild(module_sp), FileSpec(pathname, false), UserID(cu_sym_id),
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m_user_data(user_data), m_language(language), m_flags(0), m_functions(),
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m_support_files(), m_line_table_ap(), m_variables(),
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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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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), FileSpec(fspec), UserID(cu_sym_id),
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m_user_data(user_data), m_language(language), m_flags(0), m_functions(),
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m_support_files(), m_line_table_ap(), m_variables(),
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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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CompileUnit::~CompileUnit() {}
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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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<< (const FileSpec &)*this << "\", language = \"" << language << '"';
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}
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//----------------------------------------------------------------------
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// Dump the current contents of this object. No functions that cause on
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// demand parsing of functions, globals, statics are called, so this
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// is a good function to call to get an idea of the current contents of
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// the CompileUnit object.
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//----------------------------------------------------------------------
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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 = '" << static_cast<const FileSpec &>(*this)
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<< "'\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.empty()) {
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s->IndentMore();
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std::vector<FunctionSP>::const_iterator pos;
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std::vector<FunctionSP>::const_iterator end = m_functions.end();
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for (pos = m_functions.begin(); pos != end; ++pos) {
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(*pos)->Dump(s, show_context);
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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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//----------------------------------------------------------------------
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// Add a function to this compile unit
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//----------------------------------------------------------------------
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void CompileUnit::AddFunction(FunctionSP &funcSP) {
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// TODO: order these by address
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m_functions.push_back(funcSP);
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}
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FunctionSP CompileUnit::GetFunctionAtIndex(size_t idx) {
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FunctionSP funcSP;
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if (idx < m_functions.size())
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funcSP = m_functions[idx];
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return funcSP;
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}
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//----------------------------------------------------------------------
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// Find functions using the Mangled::Tokens token list. This
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// function currently implements an interactive approach designed to find
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// all instances of certain functions. It isn't designed to the
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// quickest way to lookup functions as it will need to iterate through
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// all functions and see if they match, though it does provide a powerful
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// and context sensitive way to search for all functions with a certain
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// name, all functions in a namespace, or all functions of a template
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// type. See Mangled::Tokens::Parse() comments for more information.
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//
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// The function prototype will need to change to return a list of
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// results. It was originally used to help debug the Mangled class
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// and the Mangled::Tokens::MatchesQuery() function and it currently
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// will print out a list of matching results for the functions that
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// are currently in this compile unit.
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//
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// A FindFunctions method should be called prior to this that takes
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// a regular function name (const char * or ConstString as a parameter)
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// before resorting to this slower but more complete function. The
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// other FindFunctions method should be able to take advantage of any
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// accelerator tables available in the debug information (which is
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// parsed by the SymbolFile parser plug-ins and registered with each
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// Module).
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//----------------------------------------------------------------------
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// void
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// CompileUnit::FindFunctions(const Mangled::Tokens& tokens)
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//{
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// if (!m_functions.empty())
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// {
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// Stream s(stdout);
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// std::vector<FunctionSP>::const_iterator pos;
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// std::vector<FunctionSP>::const_iterator end = m_functions.end();
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// for (pos = m_functions.begin(); pos != end; ++pos)
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// {
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// const ConstString& demangled = (*pos)->Mangled().Demangled();
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// if (demangled)
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// {
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// const Mangled::Tokens& func_tokens =
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// (*pos)->Mangled().GetTokens();
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// if (func_tokens.MatchesQuery (tokens))
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// s << "demangled MATCH found: " << demangled << "\n";
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// }
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// }
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// }
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//}
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FunctionSP CompileUnit::FindFunctionByUID(lldb::user_id_t func_uid) {
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FunctionSP funcSP;
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if (!m_functions.empty()) {
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std::vector<FunctionSP>::const_iterator pos;
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std::vector<FunctionSP>::const_iterator end = m_functions.end();
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for (pos = m_functions.begin(); pos != end; ++pos) {
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if ((*pos)->GetID() == func_uid) {
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funcSP = *pos;
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break;
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}
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}
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}
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return funcSP;
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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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SymbolVendor *symbol_vendor = GetModule()->GetSymbolVendor();
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if (symbol_vendor) {
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SymbolContext sc;
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CalculateSymbolContext(&sc);
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m_language = symbol_vendor->ParseCompileUnitLanguage(sc);
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}
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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_ap.get() == nullptr) {
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if (m_flags.IsClear(flagsParsedLineTable)) {
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m_flags.Set(flagsParsedLineTable);
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SymbolVendor *symbol_vendor = GetModule()->GetSymbolVendor();
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if (symbol_vendor) {
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SymbolContext sc;
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CalculateSymbolContext(&sc);
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symbol_vendor->ParseCompileUnitLineTable(sc);
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}
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}
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}
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return m_line_table_ap.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_ap.reset(line_table);
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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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SymbolVendor *symbol_vendor = GetModule()->GetSymbolVendor();
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if (symbol_vendor) {
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SymbolContext sc;
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CalculateSymbolContext(&sc);
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symbol_vendor->ParseCompileUnitDebugMacros(sc);
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}
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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->GetSymbolVendor()->ParseVariablesForContext(sc);
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}
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return m_variables;
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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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uint32_t file_idx = 0;
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if (file_spec_ptr) {
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file_idx = GetSupportFiles().FindFileIndex(1, *file_spec_ptr, true);
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if (file_idx == UINT32_MAX)
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return UINT32_MAX;
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} else {
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// All the line table entries actually point to the version of the Compile
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// Unit that is in the support files (the one at 0 was artificially added.)
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// So prefer the one further on in the support files if it exists...
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FileSpecList &support_files = GetSupportFiles();
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const bool full = true;
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file_idx = support_files.FindFileIndex(
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1, support_files.GetFileSpecAtIndex(0), full);
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if (file_idx == UINT32_MAX)
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file_idx = 0;
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}
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LineTable *line_table = GetLineTable();
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if (line_table)
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return line_table->FindLineEntryIndexByFileIndex(start_idx, file_idx, line,
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exact, line_entry_ptr);
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return UINT32_MAX;
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}
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uint32_t CompileUnit::ResolveSymbolContext(const FileSpec &file_spec,
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uint32_t line, bool check_inlines,
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bool exact, uint32_t 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
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// when finding file indexes
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std::vector<uint32_t> file_indexes;
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const bool full_match = (bool)file_spec.GetDirectory();
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const bool remove_backup_dots = true;
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bool file_spec_matches_cu_file_spec =
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FileSpec::Equal(file_spec, *this, full_match, remove_backup_dots);
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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 == false && check_inlines == false)
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return 0;
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uint32_t file_idx =
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GetSupportFiles().FindFileIndex(1, file_spec, true, remove_backup_dots);
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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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remove_backup_dots);
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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 0;
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const uint32_t prev_size = sc_list.GetSize();
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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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LineTable *line_table = sc.comp_unit->GetLineTable();
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if (line_table != nullptr) {
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uint32_t found_line;
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uint32_t line_idx;
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if (num_file_indexes == 1) {
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// We only have a single support file that matches, so use
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// the line table function that searches for a line entries
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// that match a single support file index
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LineEntry line_entry;
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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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// If "exact == true", then "found_line" will be the same
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// as "line". If "exact == false", the "found_line" will be the
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// closest line entry with a line number greater than "line" and
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// we will use this for our subsequent line exact matches below.
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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 just
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// copy that over.
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// But if they wanted more than just the line 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(
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&sc, resolve_scope);
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}
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sc_list.Append(sc);
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line_idx = line_table->FindLineEntryIndexByFileIndex(
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line_idx + 1, file_indexes.front(), found_line, true,
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&line_entry);
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}
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} else {
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// We found multiple support files that match "file_spec" so use
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// the line table function that searches for a line entries
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// that match a multiple support file indexes.
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LineEntry line_entry;
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line_idx = line_table->FindLineEntryIndexByFileIndex(
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0, file_indexes, line, exact, &line_entry);
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// If "exact == true", then "found_line" will be the same
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// as "line". If "exact == false", the "found_line" will be the
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// closest line entry with a line number greater than "line" and
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// we will use this for our subsequent line exact matches below.
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found_line = line_entry.line;
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while (line_idx != UINT32_MAX) {
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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(
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&sc, resolve_scope);
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}
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sc_list.Append(sc);
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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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}
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} else 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
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// by 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 sc_list.GetSize() - prev_size;
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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 (SymbolVendor *symbol_vendor = GetModule()->GetSymbolVendor()) {
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SymbolContext sc;
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CalculateSymbolContext(&sc);
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if (symbol_vendor->ParseCompileUnitIsOptimized(sc))
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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<ConstString> &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 (SymbolVendor *symbol_vendor = GetModule()->GetSymbolVendor()) {
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SymbolContext sc;
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CalculateSymbolContext(&sc);
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symbol_vendor->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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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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SymbolVendor *symbol_vendor = GetModule()->GetSymbolVendor();
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if (symbol_vendor) {
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SymbolContext sc;
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CalculateSymbolContext(&sc);
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symbol_vendor->ParseCompileUnitSupportFiles(sc, m_support_files);
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}
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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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