2225 lines
76 KiB
C++
2225 lines
76 KiB
C++
//===-- ClangExpressionDeclMap.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 "ClangExpressionDeclMap.h"
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#include "ASTDumper.h"
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#include "ClangASTSource.h"
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#include "ClangModulesDeclVendor.h"
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#include "ClangPersistentVariables.h"
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#include "lldb/Core/Address.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/ModuleSpec.h"
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#include "lldb/Core/RegisterValue.h"
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#include "lldb/Core/ValueObjectConstResult.h"
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#include "lldb/Core/ValueObjectVariable.h"
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#include "lldb/Expression/Materializer.h"
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#include "lldb/Symbol/ClangASTContext.h"
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#include "lldb/Symbol/CompileUnit.h"
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#include "lldb/Symbol/CompilerDecl.h"
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#include "lldb/Symbol/CompilerDeclContext.h"
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#include "lldb/Symbol/Function.h"
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Symbol/SymbolContext.h"
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#include "lldb/Symbol/SymbolFile.h"
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#include "lldb/Symbol/SymbolVendor.h"
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#include "lldb/Symbol/Type.h"
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#include "lldb/Symbol/TypeList.h"
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#include "lldb/Symbol/Variable.h"
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#include "lldb/Symbol/VariableList.h"
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#include "lldb/Target/CPPLanguageRuntime.h"
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#include "lldb/Target/ExecutionContext.h"
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#include "lldb/Target/ObjCLanguageRuntime.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/RegisterContext.h"
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#include "lldb/Target/StackFrame.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Target/Thread.h"
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#include "lldb/Utility/Endian.h"
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#include "lldb/Utility/Log.h"
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#include "lldb/Utility/Status.h"
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#include "lldb/lldb-private.h"
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#include "clang/AST/ASTConsumer.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/ASTImporter.h"
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#include "clang/AST/Decl.h"
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#include "clang/AST/DeclarationName.h"
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#include "clang/AST/RecursiveASTVisitor.h"
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#include "Plugins/Language/CPlusPlus/CPlusPlusLanguage.h"
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using namespace lldb;
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using namespace lldb_private;
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using namespace clang;
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namespace {
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const char *g_lldb_local_vars_namespace_cstr = "$__lldb_local_vars";
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} // anonymous namespace
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ClangExpressionDeclMap::ClangExpressionDeclMap(
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bool keep_result_in_memory,
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Materializer::PersistentVariableDelegate *result_delegate,
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ExecutionContext &exe_ctx)
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: ClangASTSource(exe_ctx.GetTargetSP()), m_found_entities(),
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m_struct_members(), m_keep_result_in_memory(keep_result_in_memory),
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m_result_delegate(result_delegate), m_parser_vars(), m_struct_vars() {
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EnableStructVars();
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}
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ClangExpressionDeclMap::~ClangExpressionDeclMap() {
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// Note: The model is now that the parser's AST context and all associated
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// data does not vanish until the expression has been executed. This means
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// that valuable lookup data (like namespaces) doesn't vanish, but
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DidParse();
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DisableStructVars();
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}
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bool ClangExpressionDeclMap::WillParse(ExecutionContext &exe_ctx,
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Materializer *materializer) {
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ClangASTMetrics::ClearLocalCounters();
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EnableParserVars();
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m_parser_vars->m_exe_ctx = exe_ctx;
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Target *target = exe_ctx.GetTargetPtr();
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if (exe_ctx.GetFramePtr())
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m_parser_vars->m_sym_ctx =
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exe_ctx.GetFramePtr()->GetSymbolContext(lldb::eSymbolContextEverything);
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else if (exe_ctx.GetThreadPtr() &&
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exe_ctx.GetThreadPtr()->GetStackFrameAtIndex(0))
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m_parser_vars->m_sym_ctx =
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exe_ctx.GetThreadPtr()->GetStackFrameAtIndex(0)->GetSymbolContext(
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lldb::eSymbolContextEverything);
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else if (exe_ctx.GetProcessPtr()) {
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m_parser_vars->m_sym_ctx.Clear(true);
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m_parser_vars->m_sym_ctx.target_sp = exe_ctx.GetTargetSP();
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} else if (target) {
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m_parser_vars->m_sym_ctx.Clear(true);
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m_parser_vars->m_sym_ctx.target_sp = exe_ctx.GetTargetSP();
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}
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if (target) {
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m_parser_vars->m_persistent_vars = llvm::cast<ClangPersistentVariables>(
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target->GetPersistentExpressionStateForLanguage(eLanguageTypeC));
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if (!target->GetScratchClangASTContext())
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return false;
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}
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m_parser_vars->m_target_info = GetTargetInfo();
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m_parser_vars->m_materializer = materializer;
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return true;
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}
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void ClangExpressionDeclMap::InstallCodeGenerator(
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clang::ASTConsumer *code_gen) {
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assert(m_parser_vars);
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m_parser_vars->m_code_gen = code_gen;
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}
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void ClangExpressionDeclMap::DidParse() {
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Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
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if (log)
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ClangASTMetrics::DumpCounters(log);
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if (m_parser_vars.get()) {
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for (size_t entity_index = 0, num_entities = m_found_entities.GetSize();
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entity_index < num_entities; ++entity_index) {
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ExpressionVariableSP var_sp(
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m_found_entities.GetVariableAtIndex(entity_index));
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if (var_sp)
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llvm::cast<ClangExpressionVariable>(var_sp.get())
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->DisableParserVars(GetParserID());
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}
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for (size_t pvar_index = 0,
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num_pvars = m_parser_vars->m_persistent_vars->GetSize();
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pvar_index < num_pvars; ++pvar_index) {
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ExpressionVariableSP pvar_sp(
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m_parser_vars->m_persistent_vars->GetVariableAtIndex(pvar_index));
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if (ClangExpressionVariable *clang_var =
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llvm::dyn_cast<ClangExpressionVariable>(pvar_sp.get()))
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clang_var->DisableParserVars(GetParserID());
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}
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DisableParserVars();
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}
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}
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// Interface for IRForTarget
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ClangExpressionDeclMap::TargetInfo ClangExpressionDeclMap::GetTargetInfo() {
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assert(m_parser_vars.get());
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TargetInfo ret;
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ExecutionContext &exe_ctx = m_parser_vars->m_exe_ctx;
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Process *process = exe_ctx.GetProcessPtr();
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if (process) {
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ret.byte_order = process->GetByteOrder();
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ret.address_byte_size = process->GetAddressByteSize();
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} else {
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Target *target = exe_ctx.GetTargetPtr();
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if (target) {
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ret.byte_order = target->GetArchitecture().GetByteOrder();
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ret.address_byte_size = target->GetArchitecture().GetAddressByteSize();
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}
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}
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return ret;
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}
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namespace {
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/// This class walks an AST and ensures that all DeclContexts defined inside the
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/// current source file are properly complete.
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///
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/// This is used to ensure that persistent types defined in the current source
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/// file migrate completely to the persistent AST context before they are
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/// reused. If that didn't happen, it would be impoossible to complete them
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/// because their origin would be gone.
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///
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/// The stragtegy used by this class is to check the SourceLocation (to be
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/// specific, the FileID) and see if it's the FileID for the current expression.
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/// Alternate strategies could include checking whether an ExternalASTMerger,
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/// set up to not have the current context as a source, can find an original for
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/// the type.
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class Completer : public clang::RecursiveASTVisitor<Completer> {
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private:
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clang::ASTImporter &m_exporter; /// Used to import Decl contents
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clang::FileID m_file; /// The file that's going away
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llvm::DenseSet<clang::Decl *> m_completed; /// Visited Decls, to avoid cycles
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bool ImportAndCheckCompletable(clang::Decl *decl) {
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(void)m_exporter.Import(decl);
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if (m_completed.count(decl))
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return false;
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if (!llvm::isa<DeclContext>(decl))
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return false;
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const clang::SourceLocation loc = decl->getLocation();
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if (!loc.isValid())
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return false;
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const clang::FileID file =
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m_exporter.getFromContext().getSourceManager().getFileID(loc);
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if (file != m_file)
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return false;
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// We are assuming the Decl was parsed in this very expression, so it should
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// not have external storage.
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lldbassert(!llvm::cast<DeclContext>(decl)->hasExternalLexicalStorage());
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return true;
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}
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void Complete(clang::Decl *decl) {
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m_completed.insert(decl);
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auto *decl_context = llvm::cast<DeclContext>(decl);
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(void)m_exporter.Import(decl);
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m_exporter.CompleteDecl(decl);
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for (Decl *child : decl_context->decls())
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if (ImportAndCheckCompletable(child))
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Complete(child);
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}
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void MaybeComplete(clang::Decl *decl) {
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if (ImportAndCheckCompletable(decl))
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Complete(decl);
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}
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public:
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Completer(clang::ASTImporter &exporter, clang::FileID file)
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: m_exporter(exporter), m_file(file) {}
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// Implements the RecursiveASTVisitor's core API. It is called on each Decl
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// that the RecursiveASTVisitor encounters, and returns true if the traversal
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// should continue.
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bool VisitDecl(clang::Decl *decl) {
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MaybeComplete(decl);
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return true;
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}
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};
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}
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static void CompleteAllDeclContexts(clang::ASTImporter &exporter,
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clang::FileID file,
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clang::QualType root) {
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clang::QualType canonical_type = root.getCanonicalType();
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if (clang::TagDecl *tag_decl = canonical_type->getAsTagDecl()) {
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Completer(exporter, file).TraverseDecl(tag_decl);
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} else if (auto interface_type = llvm::dyn_cast<ObjCInterfaceType>(
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canonical_type.getTypePtr())) {
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Completer(exporter, file).TraverseDecl(interface_type->getDecl());
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} else {
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Completer(exporter, file).TraverseType(canonical_type);
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}
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}
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static clang::QualType ExportAllDeclaredTypes(
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clang::ExternalASTMerger &merger,
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clang::ASTContext &source, clang::FileManager &source_file_manager,
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const clang::ExternalASTMerger::OriginMap &source_origin_map,
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clang::FileID file, clang::QualType root) {
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clang::ExternalASTMerger::ImporterSource importer_source =
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{ source, source_file_manager, source_origin_map };
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merger.AddSources(importer_source);
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clang::ASTImporter &exporter = merger.ImporterForOrigin(source);
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CompleteAllDeclContexts(exporter, file, root);
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clang::QualType ret = exporter.Import(root);
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merger.RemoveSources(importer_source);
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return ret;
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}
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TypeFromUser ClangExpressionDeclMap::DeportType(ClangASTContext &target,
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ClangASTContext &source,
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TypeFromParser parser_type) {
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assert (&target == m_target->GetScratchClangASTContext());
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assert ((TypeSystem*)&source == parser_type.GetTypeSystem());
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assert (source.getASTContext() == m_ast_context);
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if (m_ast_importer_sp) {
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return TypeFromUser(m_ast_importer_sp->DeportType(
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target.getASTContext(), source.getASTContext(),
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parser_type.GetOpaqueQualType()),
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&target);
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} else if (m_merger_up) {
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clang::FileID source_file =
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source.getASTContext()->getSourceManager().getFileID(
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source.getASTContext()->getTranslationUnitDecl()->getLocation());
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auto scratch_ast_context = static_cast<ClangASTContextForExpressions*>(
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m_target->GetScratchClangASTContext());
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clang::QualType exported_type = ExportAllDeclaredTypes(
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scratch_ast_context->GetMergerUnchecked(),
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*source.getASTContext(), *source.getFileManager(),
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m_merger_up->GetOrigins(),
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source_file,
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clang::QualType::getFromOpaquePtr(parser_type.GetOpaqueQualType()));
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return TypeFromUser(exported_type.getAsOpaquePtr(), &target);
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} else {
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lldbassert(0 && "No mechanism for deporting a type!");
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return TypeFromUser();
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}
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}
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bool ClangExpressionDeclMap::AddPersistentVariable(const NamedDecl *decl,
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const ConstString &name,
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TypeFromParser parser_type,
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bool is_result,
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bool is_lvalue) {
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assert(m_parser_vars.get());
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ClangASTContext *ast =
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llvm::dyn_cast_or_null<ClangASTContext>(parser_type.GetTypeSystem());
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if (ast == nullptr)
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return false;
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if (m_parser_vars->m_materializer && is_result) {
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Status err;
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ExecutionContext &exe_ctx = m_parser_vars->m_exe_ctx;
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Target *target = exe_ctx.GetTargetPtr();
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if (target == nullptr)
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return false;
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TypeFromUser user_type =
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DeportType(*target->GetScratchClangASTContext(), *ast, parser_type);
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uint32_t offset = m_parser_vars->m_materializer->AddResultVariable(
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user_type, is_lvalue, m_keep_result_in_memory, m_result_delegate, err);
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ClangExpressionVariable *var = new ClangExpressionVariable(
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exe_ctx.GetBestExecutionContextScope(), name, user_type,
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m_parser_vars->m_target_info.byte_order,
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m_parser_vars->m_target_info.address_byte_size);
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m_found_entities.AddNewlyConstructedVariable(var);
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var->EnableParserVars(GetParserID());
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ClangExpressionVariable::ParserVars *parser_vars =
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var->GetParserVars(GetParserID());
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parser_vars->m_named_decl = decl;
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parser_vars->m_parser_type = parser_type;
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var->EnableJITVars(GetParserID());
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ClangExpressionVariable::JITVars *jit_vars = var->GetJITVars(GetParserID());
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jit_vars->m_offset = offset;
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return true;
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}
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Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
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ExecutionContext &exe_ctx = m_parser_vars->m_exe_ctx;
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Target *target = exe_ctx.GetTargetPtr();
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if (target == NULL)
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return false;
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ClangASTContext *context(target->GetScratchClangASTContext());
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TypeFromUser user_type = DeportType(*context, *ast, parser_type);
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if (!user_type.GetOpaqueQualType()) {
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if (log)
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log->Printf("Persistent variable's type wasn't copied successfully");
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return false;
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}
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if (!m_parser_vars->m_target_info.IsValid())
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return false;
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ClangExpressionVariable *var = llvm::cast<ClangExpressionVariable>(
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m_parser_vars->m_persistent_vars
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->CreatePersistentVariable(
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exe_ctx.GetBestExecutionContextScope(), name, user_type,
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m_parser_vars->m_target_info.byte_order,
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m_parser_vars->m_target_info.address_byte_size)
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.get());
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if (!var)
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return false;
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var->m_frozen_sp->SetHasCompleteType();
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if (is_result)
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var->m_flags |= ClangExpressionVariable::EVNeedsFreezeDry;
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else
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var->m_flags |=
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ClangExpressionVariable::EVKeepInTarget; // explicitly-declared
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// persistent variables should
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// persist
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if (is_lvalue) {
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var->m_flags |= ClangExpressionVariable::EVIsProgramReference;
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} else {
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var->m_flags |= ClangExpressionVariable::EVIsLLDBAllocated;
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var->m_flags |= ClangExpressionVariable::EVNeedsAllocation;
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}
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if (m_keep_result_in_memory) {
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var->m_flags |= ClangExpressionVariable::EVKeepInTarget;
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}
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if (log)
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log->Printf("Created persistent variable with flags 0x%hx", var->m_flags);
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var->EnableParserVars(GetParserID());
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ClangExpressionVariable::ParserVars *parser_vars =
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var->GetParserVars(GetParserID());
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parser_vars->m_named_decl = decl;
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parser_vars->m_parser_type = parser_type;
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return true;
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}
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bool ClangExpressionDeclMap::AddValueToStruct(const NamedDecl *decl,
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const ConstString &name,
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llvm::Value *value, size_t size,
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lldb::offset_t alignment) {
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assert(m_struct_vars.get());
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assert(m_parser_vars.get());
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bool is_persistent_variable = false;
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Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
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m_struct_vars->m_struct_laid_out = false;
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if (ClangExpressionVariable::FindVariableInList(m_struct_members, decl,
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GetParserID()))
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return true;
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ClangExpressionVariable *var(ClangExpressionVariable::FindVariableInList(
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m_found_entities, decl, GetParserID()));
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if (!var) {
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var = ClangExpressionVariable::FindVariableInList(
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*m_parser_vars->m_persistent_vars, decl, GetParserID());
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is_persistent_variable = true;
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}
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if (!var)
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return false;
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if (log)
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log->Printf("Adding value for (NamedDecl*)%p [%s - %s] to the structure",
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static_cast<const void *>(decl), name.GetCString(),
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var->GetName().GetCString());
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// We know entity->m_parser_vars is valid because we used a parser variable
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// to find it
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ClangExpressionVariable::ParserVars *parser_vars =
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llvm::cast<ClangExpressionVariable>(var)->GetParserVars(GetParserID());
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parser_vars->m_llvm_value = value;
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if (ClangExpressionVariable::JITVars *jit_vars =
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llvm::cast<ClangExpressionVariable>(var)->GetJITVars(GetParserID())) {
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// We already laid this out; do not touch
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if (log)
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log->Printf("Already placed at 0x%llx",
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(unsigned long long)jit_vars->m_offset);
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}
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llvm::cast<ClangExpressionVariable>(var)->EnableJITVars(GetParserID());
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ClangExpressionVariable::JITVars *jit_vars =
|
|
llvm::cast<ClangExpressionVariable>(var)->GetJITVars(GetParserID());
|
|
|
|
jit_vars->m_alignment = alignment;
|
|
jit_vars->m_size = size;
|
|
|
|
m_struct_members.AddVariable(var->shared_from_this());
|
|
|
|
if (m_parser_vars->m_materializer) {
|
|
uint32_t offset = 0;
|
|
|
|
Status err;
|
|
|
|
if (is_persistent_variable) {
|
|
ExpressionVariableSP var_sp(var->shared_from_this());
|
|
offset = m_parser_vars->m_materializer->AddPersistentVariable(
|
|
var_sp, nullptr, err);
|
|
} else {
|
|
if (const lldb_private::Symbol *sym = parser_vars->m_lldb_sym)
|
|
offset = m_parser_vars->m_materializer->AddSymbol(*sym, err);
|
|
else if (const RegisterInfo *reg_info = var->GetRegisterInfo())
|
|
offset = m_parser_vars->m_materializer->AddRegister(*reg_info, err);
|
|
else if (parser_vars->m_lldb_var)
|
|
offset = m_parser_vars->m_materializer->AddVariable(
|
|
parser_vars->m_lldb_var, err);
|
|
}
|
|
|
|
if (!err.Success())
|
|
return false;
|
|
|
|
if (log)
|
|
log->Printf("Placed at 0x%llx", (unsigned long long)offset);
|
|
|
|
jit_vars->m_offset =
|
|
offset; // TODO DoStructLayout() should not change this.
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ClangExpressionDeclMap::DoStructLayout() {
|
|
assert(m_struct_vars.get());
|
|
|
|
if (m_struct_vars->m_struct_laid_out)
|
|
return true;
|
|
|
|
if (!m_parser_vars->m_materializer)
|
|
return false;
|
|
|
|
m_struct_vars->m_struct_alignment =
|
|
m_parser_vars->m_materializer->GetStructAlignment();
|
|
m_struct_vars->m_struct_size =
|
|
m_parser_vars->m_materializer->GetStructByteSize();
|
|
m_struct_vars->m_struct_laid_out = true;
|
|
return true;
|
|
}
|
|
|
|
bool ClangExpressionDeclMap::GetStructInfo(uint32_t &num_elements, size_t &size,
|
|
lldb::offset_t &alignment) {
|
|
assert(m_struct_vars.get());
|
|
|
|
if (!m_struct_vars->m_struct_laid_out)
|
|
return false;
|
|
|
|
num_elements = m_struct_members.GetSize();
|
|
size = m_struct_vars->m_struct_size;
|
|
alignment = m_struct_vars->m_struct_alignment;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ClangExpressionDeclMap::GetStructElement(const NamedDecl *&decl,
|
|
llvm::Value *&value,
|
|
lldb::offset_t &offset,
|
|
ConstString &name,
|
|
uint32_t index) {
|
|
assert(m_struct_vars.get());
|
|
|
|
if (!m_struct_vars->m_struct_laid_out)
|
|
return false;
|
|
|
|
if (index >= m_struct_members.GetSize())
|
|
return false;
|
|
|
|
ExpressionVariableSP member_sp(m_struct_members.GetVariableAtIndex(index));
|
|
|
|
if (!member_sp)
|
|
return false;
|
|
|
|
ClangExpressionVariable::ParserVars *parser_vars =
|
|
llvm::cast<ClangExpressionVariable>(member_sp.get())
|
|
->GetParserVars(GetParserID());
|
|
ClangExpressionVariable::JITVars *jit_vars =
|
|
llvm::cast<ClangExpressionVariable>(member_sp.get())
|
|
->GetJITVars(GetParserID());
|
|
|
|
if (!parser_vars || !jit_vars || !member_sp->GetValueObject())
|
|
return false;
|
|
|
|
decl = parser_vars->m_named_decl;
|
|
value = parser_vars->m_llvm_value;
|
|
offset = jit_vars->m_offset;
|
|
name = member_sp->GetName();
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ClangExpressionDeclMap::GetFunctionInfo(const NamedDecl *decl,
|
|
uint64_t &ptr) {
|
|
ClangExpressionVariable *entity(ClangExpressionVariable::FindVariableInList(
|
|
m_found_entities, decl, GetParserID()));
|
|
|
|
if (!entity)
|
|
return false;
|
|
|
|
// We know m_parser_vars is valid since we searched for the variable by
|
|
// its NamedDecl
|
|
|
|
ClangExpressionVariable::ParserVars *parser_vars =
|
|
entity->GetParserVars(GetParserID());
|
|
|
|
ptr = parser_vars->m_lldb_value.GetScalar().ULongLong();
|
|
|
|
return true;
|
|
}
|
|
|
|
addr_t ClangExpressionDeclMap::GetSymbolAddress(Target &target,
|
|
Process *process,
|
|
const ConstString &name,
|
|
lldb::SymbolType symbol_type,
|
|
lldb_private::Module *module) {
|
|
SymbolContextList sc_list;
|
|
|
|
if (module)
|
|
module->FindSymbolsWithNameAndType(name, symbol_type, sc_list);
|
|
else
|
|
target.GetImages().FindSymbolsWithNameAndType(name, symbol_type, sc_list);
|
|
|
|
const uint32_t num_matches = sc_list.GetSize();
|
|
addr_t symbol_load_addr = LLDB_INVALID_ADDRESS;
|
|
|
|
for (uint32_t i = 0;
|
|
i < num_matches &&
|
|
(symbol_load_addr == 0 || symbol_load_addr == LLDB_INVALID_ADDRESS);
|
|
i++) {
|
|
SymbolContext sym_ctx;
|
|
sc_list.GetContextAtIndex(i, sym_ctx);
|
|
|
|
const Address sym_address = sym_ctx.symbol->GetAddress();
|
|
|
|
if (!sym_address.IsValid())
|
|
continue;
|
|
|
|
switch (sym_ctx.symbol->GetType()) {
|
|
case eSymbolTypeCode:
|
|
case eSymbolTypeTrampoline:
|
|
symbol_load_addr = sym_address.GetCallableLoadAddress(&target);
|
|
break;
|
|
|
|
case eSymbolTypeResolver:
|
|
symbol_load_addr = sym_address.GetCallableLoadAddress(&target, true);
|
|
break;
|
|
|
|
case eSymbolTypeReExported: {
|
|
ConstString reexport_name = sym_ctx.symbol->GetReExportedSymbolName();
|
|
if (reexport_name) {
|
|
ModuleSP reexport_module_sp;
|
|
ModuleSpec reexport_module_spec;
|
|
reexport_module_spec.GetPlatformFileSpec() =
|
|
sym_ctx.symbol->GetReExportedSymbolSharedLibrary();
|
|
if (reexport_module_spec.GetPlatformFileSpec()) {
|
|
reexport_module_sp =
|
|
target.GetImages().FindFirstModule(reexport_module_spec);
|
|
if (!reexport_module_sp) {
|
|
reexport_module_spec.GetPlatformFileSpec().GetDirectory().Clear();
|
|
reexport_module_sp =
|
|
target.GetImages().FindFirstModule(reexport_module_spec);
|
|
}
|
|
}
|
|
symbol_load_addr = GetSymbolAddress(
|
|
target, process, sym_ctx.symbol->GetReExportedSymbolName(),
|
|
symbol_type, reexport_module_sp.get());
|
|
}
|
|
} break;
|
|
|
|
case eSymbolTypeData:
|
|
case eSymbolTypeRuntime:
|
|
case eSymbolTypeVariable:
|
|
case eSymbolTypeLocal:
|
|
case eSymbolTypeParam:
|
|
case eSymbolTypeInvalid:
|
|
case eSymbolTypeAbsolute:
|
|
case eSymbolTypeException:
|
|
case eSymbolTypeSourceFile:
|
|
case eSymbolTypeHeaderFile:
|
|
case eSymbolTypeObjectFile:
|
|
case eSymbolTypeCommonBlock:
|
|
case eSymbolTypeBlock:
|
|
case eSymbolTypeVariableType:
|
|
case eSymbolTypeLineEntry:
|
|
case eSymbolTypeLineHeader:
|
|
case eSymbolTypeScopeBegin:
|
|
case eSymbolTypeScopeEnd:
|
|
case eSymbolTypeAdditional:
|
|
case eSymbolTypeCompiler:
|
|
case eSymbolTypeInstrumentation:
|
|
case eSymbolTypeUndefined:
|
|
case eSymbolTypeObjCClass:
|
|
case eSymbolTypeObjCMetaClass:
|
|
case eSymbolTypeObjCIVar:
|
|
symbol_load_addr = sym_address.GetLoadAddress(&target);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (symbol_load_addr == LLDB_INVALID_ADDRESS && process) {
|
|
ObjCLanguageRuntime *runtime = process->GetObjCLanguageRuntime();
|
|
|
|
if (runtime) {
|
|
symbol_load_addr = runtime->LookupRuntimeSymbol(name);
|
|
}
|
|
}
|
|
|
|
return symbol_load_addr;
|
|
}
|
|
|
|
addr_t ClangExpressionDeclMap::GetSymbolAddress(const ConstString &name,
|
|
lldb::SymbolType symbol_type) {
|
|
assert(m_parser_vars.get());
|
|
|
|
if (!m_parser_vars->m_exe_ctx.GetTargetPtr())
|
|
return false;
|
|
|
|
return GetSymbolAddress(m_parser_vars->m_exe_ctx.GetTargetRef(),
|
|
m_parser_vars->m_exe_ctx.GetProcessPtr(), name,
|
|
symbol_type);
|
|
}
|
|
|
|
lldb::VariableSP ClangExpressionDeclMap::FindGlobalVariable(
|
|
Target &target, ModuleSP &module, const ConstString &name,
|
|
CompilerDeclContext *namespace_decl, TypeFromUser *type) {
|
|
VariableList vars;
|
|
|
|
if (module && namespace_decl)
|
|
module->FindGlobalVariables(name, namespace_decl, true, -1, vars);
|
|
else
|
|
target.GetImages().FindGlobalVariables(name, true, -1, vars);
|
|
|
|
if (vars.GetSize()) {
|
|
if (type) {
|
|
for (size_t i = 0; i < vars.GetSize(); ++i) {
|
|
VariableSP var_sp = vars.GetVariableAtIndex(i);
|
|
|
|
if (ClangASTContext::AreTypesSame(
|
|
*type, var_sp->GetType()->GetFullCompilerType()))
|
|
return var_sp;
|
|
}
|
|
} else {
|
|
return vars.GetVariableAtIndex(0);
|
|
}
|
|
}
|
|
|
|
return VariableSP();
|
|
}
|
|
|
|
ClangASTContext *ClangExpressionDeclMap::GetClangASTContext() {
|
|
StackFrame *frame = m_parser_vars->m_exe_ctx.GetFramePtr();
|
|
if (frame == nullptr)
|
|
return nullptr;
|
|
|
|
SymbolContext sym_ctx = frame->GetSymbolContext(lldb::eSymbolContextFunction |
|
|
lldb::eSymbolContextBlock);
|
|
if (sym_ctx.block == nullptr)
|
|
return nullptr;
|
|
|
|
CompilerDeclContext frame_decl_context = sym_ctx.block->GetDeclContext();
|
|
if (!frame_decl_context)
|
|
return nullptr;
|
|
|
|
return llvm::dyn_cast_or_null<ClangASTContext>(
|
|
frame_decl_context.GetTypeSystem());
|
|
}
|
|
|
|
// Interface for ClangASTSource
|
|
|
|
void ClangExpressionDeclMap::FindExternalVisibleDecls(
|
|
NameSearchContext &context) {
|
|
assert(m_ast_context);
|
|
|
|
ClangASTMetrics::RegisterVisibleQuery();
|
|
|
|
const ConstString name(context.m_decl_name.getAsString().c_str());
|
|
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
|
|
|
|
if (GetImportInProgress()) {
|
|
if (log && log->GetVerbose())
|
|
log->Printf("Ignoring a query during an import");
|
|
return;
|
|
}
|
|
|
|
static unsigned int invocation_id = 0;
|
|
unsigned int current_id = invocation_id++;
|
|
|
|
if (log) {
|
|
if (!context.m_decl_context)
|
|
log->Printf("ClangExpressionDeclMap::FindExternalVisibleDecls[%u] for "
|
|
"'%s' in a NULL DeclContext",
|
|
current_id, name.GetCString());
|
|
else if (const NamedDecl *context_named_decl =
|
|
dyn_cast<NamedDecl>(context.m_decl_context))
|
|
log->Printf("ClangExpressionDeclMap::FindExternalVisibleDecls[%u] for "
|
|
"'%s' in '%s'",
|
|
current_id, name.GetCString(),
|
|
context_named_decl->getNameAsString().c_str());
|
|
else
|
|
log->Printf("ClangExpressionDeclMap::FindExternalVisibleDecls[%u] for "
|
|
"'%s' in a '%s'",
|
|
current_id, name.GetCString(),
|
|
context.m_decl_context->getDeclKindName());
|
|
}
|
|
|
|
if (const NamespaceDecl *namespace_context =
|
|
dyn_cast<NamespaceDecl>(context.m_decl_context)) {
|
|
if (namespace_context->getName().str() ==
|
|
std::string(g_lldb_local_vars_namespace_cstr)) {
|
|
CompilerDeclContext compiler_decl_ctx(
|
|
GetClangASTContext(), const_cast<void *>(static_cast<const void *>(
|
|
context.m_decl_context)));
|
|
FindExternalVisibleDecls(context, lldb::ModuleSP(), compiler_decl_ctx,
|
|
current_id);
|
|
return;
|
|
}
|
|
|
|
ClangASTImporter::NamespaceMapSP namespace_map =
|
|
m_ast_importer_sp
|
|
? m_ast_importer_sp->GetNamespaceMap(namespace_context)
|
|
: ClangASTImporter::NamespaceMapSP();
|
|
|
|
if (!namespace_map)
|
|
return;
|
|
|
|
if (log && log->GetVerbose())
|
|
log->Printf(" CEDM::FEVD[%u] Inspecting (NamespaceMap*)%p (%d entries)",
|
|
current_id, static_cast<void *>(namespace_map.get()),
|
|
(int)namespace_map->size());
|
|
|
|
for (ClangASTImporter::NamespaceMap::iterator i = namespace_map->begin(),
|
|
e = namespace_map->end();
|
|
i != e; ++i) {
|
|
if (log)
|
|
log->Printf(" CEDM::FEVD[%u] Searching namespace %s in module %s",
|
|
current_id, i->second.GetName().AsCString(),
|
|
i->first->GetFileSpec().GetFilename().GetCString());
|
|
|
|
FindExternalVisibleDecls(context, i->first, i->second, current_id);
|
|
}
|
|
} else if (isa<TranslationUnitDecl>(context.m_decl_context)) {
|
|
CompilerDeclContext namespace_decl;
|
|
|
|
if (log)
|
|
log->Printf(" CEDM::FEVD[%u] Searching the root namespace", current_id);
|
|
|
|
FindExternalVisibleDecls(context, lldb::ModuleSP(), namespace_decl,
|
|
current_id);
|
|
}
|
|
|
|
ClangASTSource::FindExternalVisibleDecls(context);
|
|
}
|
|
|
|
void ClangExpressionDeclMap::FindExternalVisibleDecls(
|
|
NameSearchContext &context, lldb::ModuleSP module_sp,
|
|
CompilerDeclContext &namespace_decl, unsigned int current_id) {
|
|
assert(m_ast_context);
|
|
|
|
std::function<void(clang::FunctionDecl *)> MaybeRegisterFunctionBody =
|
|
[this](clang::FunctionDecl *copied_function_decl) {
|
|
if (copied_function_decl->getBody() && m_parser_vars->m_code_gen) {
|
|
DeclGroupRef decl_group_ref(copied_function_decl);
|
|
m_parser_vars->m_code_gen->HandleTopLevelDecl(decl_group_ref);
|
|
}
|
|
};
|
|
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
|
|
|
|
SymbolContextList sc_list;
|
|
|
|
const ConstString name(context.m_decl_name.getAsString().c_str());
|
|
if (IgnoreName(name, false))
|
|
return;
|
|
|
|
// Only look for functions by name out in our symbols if the function
|
|
// doesn't start with our phony prefix of '$'
|
|
Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr();
|
|
StackFrame *frame = m_parser_vars->m_exe_ctx.GetFramePtr();
|
|
SymbolContext sym_ctx;
|
|
if (frame != nullptr)
|
|
sym_ctx = frame->GetSymbolContext(lldb::eSymbolContextFunction |
|
|
lldb::eSymbolContextBlock);
|
|
|
|
// Try the persistent decls, which take precedence over all else.
|
|
if (!namespace_decl) {
|
|
do {
|
|
if (!target)
|
|
break;
|
|
|
|
ClangASTContext *scratch_clang_ast_context =
|
|
target->GetScratchClangASTContext();
|
|
|
|
if (!scratch_clang_ast_context)
|
|
break;
|
|
|
|
ASTContext *scratch_ast_context =
|
|
scratch_clang_ast_context->getASTContext();
|
|
|
|
if (!scratch_ast_context)
|
|
break;
|
|
|
|
NamedDecl *persistent_decl =
|
|
m_parser_vars->m_persistent_vars->GetPersistentDecl(name);
|
|
|
|
if (!persistent_decl)
|
|
break;
|
|
|
|
Decl *parser_persistent_decl = CopyDecl(persistent_decl);
|
|
|
|
if (!parser_persistent_decl)
|
|
break;
|
|
|
|
NamedDecl *parser_named_decl =
|
|
dyn_cast<NamedDecl>(parser_persistent_decl);
|
|
|
|
if (!parser_named_decl)
|
|
break;
|
|
|
|
if (clang::FunctionDecl *parser_function_decl =
|
|
llvm::dyn_cast<clang::FunctionDecl>(parser_named_decl)) {
|
|
MaybeRegisterFunctionBody(parser_function_decl);
|
|
}
|
|
|
|
if (log)
|
|
log->Printf(" CEDM::FEVD[%u] Found persistent decl %s", current_id,
|
|
name.GetCString());
|
|
|
|
context.AddNamedDecl(parser_named_decl);
|
|
} while (0);
|
|
}
|
|
|
|
if (name.GetCString()[0] == '$' && !namespace_decl) {
|
|
static ConstString g_lldb_class_name("$__lldb_class");
|
|
|
|
if (name == g_lldb_class_name) {
|
|
// Clang is looking for the type of "this"
|
|
|
|
if (frame == NULL)
|
|
return;
|
|
|
|
// Find the block that defines the function represented by "sym_ctx"
|
|
Block *function_block = sym_ctx.GetFunctionBlock();
|
|
|
|
if (!function_block)
|
|
return;
|
|
|
|
CompilerDeclContext function_decl_ctx = function_block->GetDeclContext();
|
|
|
|
if (!function_decl_ctx)
|
|
return;
|
|
|
|
clang::CXXMethodDecl *method_decl =
|
|
ClangASTContext::DeclContextGetAsCXXMethodDecl(function_decl_ctx);
|
|
|
|
if (method_decl) {
|
|
clang::CXXRecordDecl *class_decl = method_decl->getParent();
|
|
|
|
QualType class_qual_type(class_decl->getTypeForDecl(), 0);
|
|
|
|
TypeFromUser class_user_type(
|
|
class_qual_type.getAsOpaquePtr(),
|
|
ClangASTContext::GetASTContext(&class_decl->getASTContext()));
|
|
|
|
if (log) {
|
|
ASTDumper ast_dumper(class_qual_type);
|
|
log->Printf(" CEDM::FEVD[%u] Adding type for $__lldb_class: %s",
|
|
current_id, ast_dumper.GetCString());
|
|
}
|
|
|
|
AddThisType(context, class_user_type, current_id);
|
|
|
|
if (method_decl->isInstance()) {
|
|
// self is a pointer to the object
|
|
|
|
QualType class_pointer_type =
|
|
method_decl->getASTContext().getPointerType(class_qual_type);
|
|
|
|
TypeFromUser self_user_type(
|
|
class_pointer_type.getAsOpaquePtr(),
|
|
ClangASTContext::GetASTContext(&method_decl->getASTContext()));
|
|
|
|
m_struct_vars->m_object_pointer_type = self_user_type;
|
|
}
|
|
} else {
|
|
// This branch will get hit if we are executing code in the context of a
|
|
// function that
|
|
// claims to have an object pointer (through DW_AT_object_pointer?) but
|
|
// is not formally a
|
|
// method of the class. In that case, just look up the "this" variable
|
|
// in the current
|
|
// scope and use its type.
|
|
// FIXME: This code is formally correct, but clang doesn't currently
|
|
// emit DW_AT_object_pointer
|
|
// for C++ so it hasn't actually been tested.
|
|
|
|
VariableList *vars = frame->GetVariableList(false);
|
|
|
|
lldb::VariableSP this_var = vars->FindVariable(ConstString("this"));
|
|
|
|
if (this_var && this_var->IsInScope(frame) &&
|
|
this_var->LocationIsValidForFrame(frame)) {
|
|
Type *this_type = this_var->GetType();
|
|
|
|
if (!this_type)
|
|
return;
|
|
|
|
TypeFromUser pointee_type =
|
|
this_type->GetForwardCompilerType().GetPointeeType();
|
|
|
|
if (pointee_type.IsValid()) {
|
|
if (log) {
|
|
ASTDumper ast_dumper(pointee_type);
|
|
log->Printf(" FEVD[%u] Adding type for $__lldb_class: %s",
|
|
current_id, ast_dumper.GetCString());
|
|
}
|
|
|
|
AddThisType(context, pointee_type, current_id);
|
|
TypeFromUser this_user_type(this_type->GetFullCompilerType());
|
|
m_struct_vars->m_object_pointer_type = this_user_type;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static ConstString g_lldb_objc_class_name("$__lldb_objc_class");
|
|
if (name == g_lldb_objc_class_name) {
|
|
// Clang is looking for the type of "*self"
|
|
|
|
if (!frame)
|
|
return;
|
|
|
|
SymbolContext sym_ctx = frame->GetSymbolContext(
|
|
lldb::eSymbolContextFunction | lldb::eSymbolContextBlock);
|
|
|
|
// Find the block that defines the function represented by "sym_ctx"
|
|
Block *function_block = sym_ctx.GetFunctionBlock();
|
|
|
|
if (!function_block)
|
|
return;
|
|
|
|
CompilerDeclContext function_decl_ctx = function_block->GetDeclContext();
|
|
|
|
if (!function_decl_ctx)
|
|
return;
|
|
|
|
clang::ObjCMethodDecl *method_decl =
|
|
ClangASTContext::DeclContextGetAsObjCMethodDecl(function_decl_ctx);
|
|
|
|
if (method_decl) {
|
|
ObjCInterfaceDecl *self_interface = method_decl->getClassInterface();
|
|
|
|
if (!self_interface)
|
|
return;
|
|
|
|
const clang::Type *interface_type = self_interface->getTypeForDecl();
|
|
|
|
if (!interface_type)
|
|
return; // This is unlikely, but we have seen crashes where this
|
|
// occurred
|
|
|
|
TypeFromUser class_user_type(
|
|
QualType(interface_type, 0).getAsOpaquePtr(),
|
|
ClangASTContext::GetASTContext(&method_decl->getASTContext()));
|
|
|
|
if (log) {
|
|
ASTDumper ast_dumper(interface_type);
|
|
log->Printf(" FEVD[%u] Adding type for $__lldb_objc_class: %s",
|
|
current_id, ast_dumper.GetCString());
|
|
}
|
|
|
|
AddOneType(context, class_user_type, current_id);
|
|
|
|
if (method_decl->isInstanceMethod()) {
|
|
// self is a pointer to the object
|
|
|
|
QualType class_pointer_type =
|
|
method_decl->getASTContext().getObjCObjectPointerType(
|
|
QualType(interface_type, 0));
|
|
|
|
TypeFromUser self_user_type(
|
|
class_pointer_type.getAsOpaquePtr(),
|
|
ClangASTContext::GetASTContext(&method_decl->getASTContext()));
|
|
|
|
m_struct_vars->m_object_pointer_type = self_user_type;
|
|
} else {
|
|
// self is a Class pointer
|
|
QualType class_type = method_decl->getASTContext().getObjCClassType();
|
|
|
|
TypeFromUser self_user_type(
|
|
class_type.getAsOpaquePtr(),
|
|
ClangASTContext::GetASTContext(&method_decl->getASTContext()));
|
|
|
|
m_struct_vars->m_object_pointer_type = self_user_type;
|
|
}
|
|
|
|
return;
|
|
} else {
|
|
// This branch will get hit if we are executing code in the context of a
|
|
// function that
|
|
// claims to have an object pointer (through DW_AT_object_pointer?) but
|
|
// is not formally a
|
|
// method of the class. In that case, just look up the "self" variable
|
|
// in the current
|
|
// scope and use its type.
|
|
|
|
VariableList *vars = frame->GetVariableList(false);
|
|
|
|
lldb::VariableSP self_var = vars->FindVariable(ConstString("self"));
|
|
|
|
if (self_var && self_var->IsInScope(frame) &&
|
|
self_var->LocationIsValidForFrame(frame)) {
|
|
Type *self_type = self_var->GetType();
|
|
|
|
if (!self_type)
|
|
return;
|
|
|
|
CompilerType self_clang_type = self_type->GetFullCompilerType();
|
|
|
|
if (ClangASTContext::IsObjCClassType(self_clang_type)) {
|
|
return;
|
|
} else if (ClangASTContext::IsObjCObjectPointerType(
|
|
self_clang_type)) {
|
|
self_clang_type = self_clang_type.GetPointeeType();
|
|
|
|
if (!self_clang_type)
|
|
return;
|
|
|
|
if (log) {
|
|
ASTDumper ast_dumper(self_type->GetFullCompilerType());
|
|
log->Printf(" FEVD[%u] Adding type for $__lldb_objc_class: %s",
|
|
current_id, ast_dumper.GetCString());
|
|
}
|
|
|
|
TypeFromUser class_user_type(self_clang_type);
|
|
|
|
AddOneType(context, class_user_type, current_id);
|
|
|
|
TypeFromUser self_user_type(self_type->GetFullCompilerType());
|
|
|
|
m_struct_vars->m_object_pointer_type = self_user_type;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
if (name == ConstString(g_lldb_local_vars_namespace_cstr)) {
|
|
CompilerDeclContext frame_decl_context =
|
|
sym_ctx.block != nullptr ? sym_ctx.block->GetDeclContext()
|
|
: CompilerDeclContext();
|
|
|
|
if (frame_decl_context) {
|
|
ClangASTContext *ast = llvm::dyn_cast_or_null<ClangASTContext>(
|
|
frame_decl_context.GetTypeSystem());
|
|
|
|
if (ast) {
|
|
clang::NamespaceDecl *namespace_decl =
|
|
ClangASTContext::GetUniqueNamespaceDeclaration(
|
|
m_ast_context, name.GetCString(), nullptr);
|
|
if (namespace_decl) {
|
|
context.AddNamedDecl(namespace_decl);
|
|
clang::DeclContext *clang_decl_ctx =
|
|
clang::Decl::castToDeclContext(namespace_decl);
|
|
clang_decl_ctx->setHasExternalVisibleStorage(true);
|
|
context.m_found.local_vars_nsp = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
// any other $__lldb names should be weeded out now
|
|
if (name.GetStringRef().startswith("$__lldb"))
|
|
return;
|
|
|
|
ExpressionVariableSP pvar_sp(
|
|
m_parser_vars->m_persistent_vars->GetVariable(name));
|
|
|
|
if (pvar_sp) {
|
|
AddOneVariable(context, pvar_sp, current_id);
|
|
return;
|
|
}
|
|
|
|
const char *reg_name(&name.GetCString()[1]);
|
|
|
|
if (m_parser_vars->m_exe_ctx.GetRegisterContext()) {
|
|
const RegisterInfo *reg_info(
|
|
m_parser_vars->m_exe_ctx.GetRegisterContext()->GetRegisterInfoByName(
|
|
reg_name));
|
|
|
|
if (reg_info) {
|
|
if (log)
|
|
log->Printf(" CEDM::FEVD[%u] Found register %s", current_id,
|
|
reg_info->name);
|
|
|
|
AddOneRegister(context, reg_info, current_id);
|
|
}
|
|
}
|
|
} else {
|
|
ValueObjectSP valobj;
|
|
VariableSP var;
|
|
|
|
bool local_var_lookup =
|
|
!namespace_decl || (namespace_decl.GetName() ==
|
|
ConstString(g_lldb_local_vars_namespace_cstr));
|
|
if (frame && local_var_lookup) {
|
|
CompilerDeclContext compiler_decl_context =
|
|
sym_ctx.block != nullptr ? sym_ctx.block->GetDeclContext()
|
|
: CompilerDeclContext();
|
|
|
|
if (compiler_decl_context) {
|
|
// Make sure that the variables are parsed so that we have the
|
|
// declarations.
|
|
VariableListSP vars = frame->GetInScopeVariableList(true);
|
|
for (size_t i = 0; i < vars->GetSize(); i++)
|
|
vars->GetVariableAtIndex(i)->GetDecl();
|
|
|
|
// Search for declarations matching the name. Do not include imported
|
|
// decls
|
|
// in the search if we are looking for decls in the artificial namespace
|
|
// $__lldb_local_vars.
|
|
std::vector<CompilerDecl> found_decls =
|
|
compiler_decl_context.FindDeclByName(name,
|
|
namespace_decl.IsValid());
|
|
|
|
bool variable_found = false;
|
|
for (CompilerDecl decl : found_decls) {
|
|
for (size_t vi = 0, ve = vars->GetSize(); vi != ve; ++vi) {
|
|
VariableSP candidate_var = vars->GetVariableAtIndex(vi);
|
|
if (candidate_var->GetDecl() == decl) {
|
|
var = candidate_var;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (var && !variable_found) {
|
|
variable_found = true;
|
|
valobj = ValueObjectVariable::Create(frame, var);
|
|
AddOneVariable(context, var, valobj, current_id);
|
|
context.m_found.variable = true;
|
|
}
|
|
}
|
|
if (variable_found)
|
|
return;
|
|
}
|
|
}
|
|
if (target) {
|
|
var = FindGlobalVariable(*target, module_sp, name, &namespace_decl, NULL);
|
|
|
|
if (var) {
|
|
valobj = ValueObjectVariable::Create(target, var);
|
|
AddOneVariable(context, var, valobj, current_id);
|
|
context.m_found.variable = true;
|
|
return;
|
|
}
|
|
}
|
|
|
|
std::vector<clang::NamedDecl *> decls_from_modules;
|
|
|
|
if (target) {
|
|
if (ClangModulesDeclVendor *decl_vendor =
|
|
target->GetClangModulesDeclVendor()) {
|
|
decl_vendor->FindDecls(name, false, UINT32_MAX, decls_from_modules);
|
|
}
|
|
}
|
|
|
|
const bool include_inlines = false;
|
|
const bool append = false;
|
|
|
|
if (namespace_decl && module_sp) {
|
|
const bool include_symbols = false;
|
|
|
|
module_sp->FindFunctions(name, &namespace_decl, eFunctionNameTypeBase,
|
|
include_symbols, include_inlines, append,
|
|
sc_list);
|
|
} else if (target && !namespace_decl) {
|
|
const bool include_symbols = true;
|
|
|
|
// TODO Fix FindFunctions so that it doesn't return
|
|
// instance methods for eFunctionNameTypeBase.
|
|
|
|
target->GetImages().FindFunctions(name, eFunctionNameTypeFull,
|
|
include_symbols, include_inlines,
|
|
append, sc_list);
|
|
}
|
|
|
|
// If we found more than one function, see if we can use the
|
|
// frame's decl context to remove functions that are shadowed
|
|
// by other functions which match in type but are nearer in scope.
|
|
//
|
|
// AddOneFunction will not add a function whose type has already been
|
|
// added, so if there's another function in the list with a matching
|
|
// type, check to see if their decl context is a parent of the current
|
|
// frame's or was imported via a and using statement, and pick the
|
|
// best match according to lookup rules.
|
|
if (sc_list.GetSize() > 1) {
|
|
// Collect some info about our frame's context.
|
|
StackFrame *frame = m_parser_vars->m_exe_ctx.GetFramePtr();
|
|
SymbolContext frame_sym_ctx;
|
|
if (frame != nullptr)
|
|
frame_sym_ctx = frame->GetSymbolContext(lldb::eSymbolContextFunction |
|
|
lldb::eSymbolContextBlock);
|
|
CompilerDeclContext frame_decl_context =
|
|
frame_sym_ctx.block != nullptr ? frame_sym_ctx.block->GetDeclContext()
|
|
: CompilerDeclContext();
|
|
|
|
// We can't do this without a compiler decl context for our frame.
|
|
if (frame_decl_context) {
|
|
clang::DeclContext *frame_decl_ctx =
|
|
(clang::DeclContext *)frame_decl_context.GetOpaqueDeclContext();
|
|
ClangASTContext *ast = llvm::dyn_cast_or_null<ClangASTContext>(
|
|
frame_decl_context.GetTypeSystem());
|
|
|
|
// Structure to hold the info needed when comparing function
|
|
// declarations.
|
|
struct FuncDeclInfo {
|
|
ConstString m_name;
|
|
CompilerType m_copied_type;
|
|
uint32_t m_decl_lvl;
|
|
SymbolContext m_sym_ctx;
|
|
};
|
|
|
|
// First, symplify things by looping through the symbol contexts
|
|
// to remove unwanted functions and separate out the functions we
|
|
// want to compare and prune into a separate list.
|
|
// Cache the info needed about the function declarations in a
|
|
// vector for efficiency.
|
|
SymbolContextList sc_sym_list;
|
|
uint32_t num_indices = sc_list.GetSize();
|
|
std::vector<FuncDeclInfo> fdi_cache;
|
|
fdi_cache.reserve(num_indices);
|
|
for (uint32_t index = 0; index < num_indices; ++index) {
|
|
FuncDeclInfo fdi;
|
|
SymbolContext sym_ctx;
|
|
sc_list.GetContextAtIndex(index, sym_ctx);
|
|
|
|
// We don't know enough about symbols to compare them,
|
|
// but we should keep them in the list.
|
|
Function *function = sym_ctx.function;
|
|
if (!function) {
|
|
sc_sym_list.Append(sym_ctx);
|
|
continue;
|
|
}
|
|
// Filter out functions without declaration contexts, as well as
|
|
// class/instance methods, since they'll be skipped in the
|
|
// code that follows anyway.
|
|
CompilerDeclContext func_decl_context = function->GetDeclContext();
|
|
if (!func_decl_context ||
|
|
func_decl_context.IsClassMethod(nullptr, nullptr, nullptr))
|
|
continue;
|
|
// We can only prune functions for which we can copy the type.
|
|
CompilerType func_clang_type =
|
|
function->GetType()->GetFullCompilerType();
|
|
CompilerType copied_func_type = GuardedCopyType(func_clang_type);
|
|
if (!copied_func_type) {
|
|
sc_sym_list.Append(sym_ctx);
|
|
continue;
|
|
}
|
|
|
|
fdi.m_sym_ctx = sym_ctx;
|
|
fdi.m_name = function->GetName();
|
|
fdi.m_copied_type = copied_func_type;
|
|
fdi.m_decl_lvl = LLDB_INVALID_DECL_LEVEL;
|
|
if (fdi.m_copied_type && func_decl_context) {
|
|
// Call CountDeclLevels to get the number of parent scopes we
|
|
// have to look through before we find the function declaration.
|
|
// When comparing functions of the same type, the one with a
|
|
// lower count will be closer to us in the lookup scope and
|
|
// shadows the other.
|
|
clang::DeclContext *func_decl_ctx =
|
|
(clang::DeclContext *)func_decl_context.GetOpaqueDeclContext();
|
|
fdi.m_decl_lvl = ast->CountDeclLevels(
|
|
frame_decl_ctx, func_decl_ctx, &fdi.m_name, &fdi.m_copied_type);
|
|
}
|
|
fdi_cache.emplace_back(fdi);
|
|
}
|
|
|
|
// Loop through the functions in our cache looking for matching types,
|
|
// then compare their scope levels to see which is closer.
|
|
std::multimap<CompilerType, const FuncDeclInfo *> matches;
|
|
for (const FuncDeclInfo &fdi : fdi_cache) {
|
|
const CompilerType t = fdi.m_copied_type;
|
|
auto q = matches.find(t);
|
|
if (q != matches.end()) {
|
|
if (q->second->m_decl_lvl > fdi.m_decl_lvl)
|
|
// This function is closer; remove the old set.
|
|
matches.erase(t);
|
|
else if (q->second->m_decl_lvl < fdi.m_decl_lvl)
|
|
// The functions in our set are closer - skip this one.
|
|
continue;
|
|
}
|
|
matches.insert(std::make_pair(t, &fdi));
|
|
}
|
|
|
|
// Loop through our matches and add their symbol contexts to our list.
|
|
SymbolContextList sc_func_list;
|
|
for (const auto &q : matches)
|
|
sc_func_list.Append(q.second->m_sym_ctx);
|
|
|
|
// Rejoin the lists with the functions in front.
|
|
sc_list = sc_func_list;
|
|
sc_list.Append(sc_sym_list);
|
|
}
|
|
}
|
|
|
|
if (sc_list.GetSize()) {
|
|
Symbol *extern_symbol = NULL;
|
|
Symbol *non_extern_symbol = NULL;
|
|
|
|
for (uint32_t index = 0, num_indices = sc_list.GetSize();
|
|
index < num_indices; ++index) {
|
|
SymbolContext sym_ctx;
|
|
sc_list.GetContextAtIndex(index, sym_ctx);
|
|
|
|
if (sym_ctx.function) {
|
|
CompilerDeclContext decl_ctx = sym_ctx.function->GetDeclContext();
|
|
|
|
if (!decl_ctx)
|
|
continue;
|
|
|
|
// Filter out class/instance methods.
|
|
if (decl_ctx.IsClassMethod(nullptr, nullptr, nullptr))
|
|
continue;
|
|
|
|
AddOneFunction(context, sym_ctx.function, NULL, current_id);
|
|
context.m_found.function_with_type_info = true;
|
|
context.m_found.function = true;
|
|
} else if (sym_ctx.symbol) {
|
|
if (sym_ctx.symbol->GetType() == eSymbolTypeReExported && target) {
|
|
sym_ctx.symbol = sym_ctx.symbol->ResolveReExportedSymbol(*target);
|
|
if (sym_ctx.symbol == NULL)
|
|
continue;
|
|
}
|
|
|
|
if (sym_ctx.symbol->IsExternal())
|
|
extern_symbol = sym_ctx.symbol;
|
|
else
|
|
non_extern_symbol = sym_ctx.symbol;
|
|
}
|
|
}
|
|
|
|
if (!context.m_found.function_with_type_info) {
|
|
for (clang::NamedDecl *decl : decls_from_modules) {
|
|
if (llvm::isa<clang::FunctionDecl>(decl)) {
|
|
clang::NamedDecl *copied_decl =
|
|
llvm::cast_or_null<FunctionDecl>(CopyDecl(decl));
|
|
if (copied_decl) {
|
|
context.AddNamedDecl(copied_decl);
|
|
context.m_found.function_with_type_info = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!context.m_found.function_with_type_info) {
|
|
if (extern_symbol) {
|
|
AddOneFunction(context, NULL, extern_symbol, current_id);
|
|
context.m_found.function = true;
|
|
} else if (non_extern_symbol) {
|
|
AddOneFunction(context, NULL, non_extern_symbol, current_id);
|
|
context.m_found.function = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!context.m_found.function_with_type_info) {
|
|
// Try the modules next.
|
|
|
|
do {
|
|
if (ClangModulesDeclVendor *modules_decl_vendor =
|
|
m_target->GetClangModulesDeclVendor()) {
|
|
bool append = false;
|
|
uint32_t max_matches = 1;
|
|
std::vector<clang::NamedDecl *> decls;
|
|
|
|
if (!modules_decl_vendor->FindDecls(name, append, max_matches, decls))
|
|
break;
|
|
|
|
clang::NamedDecl *const decl_from_modules = decls[0];
|
|
|
|
if (llvm::isa<clang::FunctionDecl>(decl_from_modules)) {
|
|
if (log) {
|
|
log->Printf(" CAS::FEVD[%u] Matching function found for "
|
|
"\"%s\" in the modules",
|
|
current_id, name.GetCString());
|
|
}
|
|
|
|
clang::Decl *copied_decl = CopyDecl(decl_from_modules);
|
|
clang::FunctionDecl *copied_function_decl =
|
|
copied_decl ? dyn_cast<clang::FunctionDecl>(copied_decl)
|
|
: nullptr;
|
|
|
|
if (!copied_function_decl) {
|
|
if (log)
|
|
log->Printf(" CAS::FEVD[%u] - Couldn't export a function "
|
|
"declaration from the modules",
|
|
current_id);
|
|
|
|
break;
|
|
}
|
|
|
|
MaybeRegisterFunctionBody(copied_function_decl);
|
|
|
|
context.AddNamedDecl(copied_function_decl);
|
|
|
|
context.m_found.function_with_type_info = true;
|
|
context.m_found.function = true;
|
|
} else if (llvm::isa<clang::VarDecl>(decl_from_modules)) {
|
|
if (log) {
|
|
log->Printf(" CAS::FEVD[%u] Matching variable found for "
|
|
"\"%s\" in the modules",
|
|
current_id, name.GetCString());
|
|
}
|
|
|
|
clang::Decl *copied_decl = CopyDecl(decl_from_modules);
|
|
clang::VarDecl *copied_var_decl =
|
|
copied_decl ? dyn_cast_or_null<clang::VarDecl>(copied_decl)
|
|
: nullptr;
|
|
|
|
if (!copied_var_decl) {
|
|
if (log)
|
|
log->Printf(" CAS::FEVD[%u] - Couldn't export a variable "
|
|
"declaration from the modules",
|
|
current_id);
|
|
|
|
break;
|
|
}
|
|
|
|
context.AddNamedDecl(copied_var_decl);
|
|
|
|
context.m_found.variable = true;
|
|
}
|
|
}
|
|
} while (0);
|
|
}
|
|
|
|
if (target && !context.m_found.variable && !namespace_decl) {
|
|
// We couldn't find a non-symbol variable for this. Now we'll hunt for
|
|
// a generic
|
|
// data symbol, and -- if it is found -- treat it as a variable.
|
|
Status error;
|
|
|
|
const Symbol *data_symbol =
|
|
m_parser_vars->m_sym_ctx.FindBestGlobalDataSymbol(name, error);
|
|
|
|
if (!error.Success()) {
|
|
const unsigned diag_id =
|
|
m_ast_context->getDiagnostics().getCustomDiagID(
|
|
clang::DiagnosticsEngine::Level::Error, "%0");
|
|
m_ast_context->getDiagnostics().Report(diag_id) << error.AsCString();
|
|
}
|
|
|
|
if (data_symbol) {
|
|
std::string warning("got name from symbols: ");
|
|
warning.append(name.AsCString());
|
|
const unsigned diag_id =
|
|
m_ast_context->getDiagnostics().getCustomDiagID(
|
|
clang::DiagnosticsEngine::Level::Warning, "%0");
|
|
m_ast_context->getDiagnostics().Report(diag_id) << warning.c_str();
|
|
AddOneGenericVariable(context, *data_symbol, current_id);
|
|
context.m_found.variable = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool ClangExpressionDeclMap::GetVariableValue(VariableSP &var,
|
|
lldb_private::Value &var_location,
|
|
TypeFromUser *user_type,
|
|
TypeFromParser *parser_type) {
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
|
|
|
|
Type *var_type = var->GetType();
|
|
|
|
if (!var_type) {
|
|
if (log)
|
|
log->PutCString("Skipped a definition because it has no type");
|
|
return false;
|
|
}
|
|
|
|
CompilerType var_clang_type = var_type->GetFullCompilerType();
|
|
|
|
if (!var_clang_type) {
|
|
if (log)
|
|
log->PutCString("Skipped a definition because it has no Clang type");
|
|
return false;
|
|
}
|
|
|
|
ClangASTContext *clang_ast = llvm::dyn_cast_or_null<ClangASTContext>(
|
|
var_type->GetForwardCompilerType().GetTypeSystem());
|
|
|
|
if (!clang_ast) {
|
|
if (log)
|
|
log->PutCString("Skipped a definition because it has no Clang AST");
|
|
return false;
|
|
}
|
|
|
|
ASTContext *ast = clang_ast->getASTContext();
|
|
|
|
if (!ast) {
|
|
if (log)
|
|
log->PutCString(
|
|
"There is no AST context for the current execution context");
|
|
return false;
|
|
}
|
|
|
|
DWARFExpression &var_location_expr = var->LocationExpression();
|
|
|
|
Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr();
|
|
Status err;
|
|
|
|
if (var->GetLocationIsConstantValueData()) {
|
|
DataExtractor const_value_extractor;
|
|
|
|
if (var_location_expr.GetExpressionData(const_value_extractor)) {
|
|
var_location = Value(const_value_extractor.GetDataStart(),
|
|
const_value_extractor.GetByteSize());
|
|
var_location.SetValueType(Value::eValueTypeHostAddress);
|
|
} else {
|
|
if (log)
|
|
log->Printf("Error evaluating constant variable: %s", err.AsCString());
|
|
return false;
|
|
}
|
|
}
|
|
|
|
CompilerType type_to_use = GuardedCopyType(var_clang_type);
|
|
|
|
if (!type_to_use) {
|
|
if (log)
|
|
log->Printf(
|
|
"Couldn't copy a variable's type into the parser's AST context");
|
|
|
|
return false;
|
|
}
|
|
|
|
if (parser_type)
|
|
*parser_type = TypeFromParser(type_to_use);
|
|
|
|
if (var_location.GetContextType() == Value::eContextTypeInvalid)
|
|
var_location.SetCompilerType(type_to_use);
|
|
|
|
if (var_location.GetValueType() == Value::eValueTypeFileAddress) {
|
|
SymbolContext var_sc;
|
|
var->CalculateSymbolContext(&var_sc);
|
|
|
|
if (!var_sc.module_sp)
|
|
return false;
|
|
|
|
Address so_addr(var_location.GetScalar().ULongLong(),
|
|
var_sc.module_sp->GetSectionList());
|
|
|
|
lldb::addr_t load_addr = so_addr.GetLoadAddress(target);
|
|
|
|
if (load_addr != LLDB_INVALID_ADDRESS) {
|
|
var_location.GetScalar() = load_addr;
|
|
var_location.SetValueType(Value::eValueTypeLoadAddress);
|
|
}
|
|
}
|
|
|
|
if (user_type)
|
|
*user_type = TypeFromUser(var_clang_type);
|
|
|
|
return true;
|
|
}
|
|
|
|
void ClangExpressionDeclMap::AddOneVariable(NameSearchContext &context,
|
|
VariableSP var,
|
|
ValueObjectSP valobj,
|
|
unsigned int current_id) {
|
|
assert(m_parser_vars.get());
|
|
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
|
|
|
|
TypeFromUser ut;
|
|
TypeFromParser pt;
|
|
Value var_location;
|
|
|
|
if (!GetVariableValue(var, var_location, &ut, &pt))
|
|
return;
|
|
|
|
clang::QualType parser_opaque_type =
|
|
QualType::getFromOpaquePtr(pt.GetOpaqueQualType());
|
|
|
|
if (parser_opaque_type.isNull())
|
|
return;
|
|
|
|
if (const clang::Type *parser_type = parser_opaque_type.getTypePtr()) {
|
|
if (const TagType *tag_type = dyn_cast<TagType>(parser_type))
|
|
CompleteType(tag_type->getDecl());
|
|
if (const ObjCObjectPointerType *objc_object_ptr_type =
|
|
dyn_cast<ObjCObjectPointerType>(parser_type))
|
|
CompleteType(objc_object_ptr_type->getInterfaceDecl());
|
|
}
|
|
|
|
bool is_reference = pt.IsReferenceType();
|
|
|
|
NamedDecl *var_decl = NULL;
|
|
if (is_reference)
|
|
var_decl = context.AddVarDecl(pt);
|
|
else
|
|
var_decl = context.AddVarDecl(pt.GetLValueReferenceType());
|
|
|
|
std::string decl_name(context.m_decl_name.getAsString());
|
|
ConstString entity_name(decl_name.c_str());
|
|
ClangExpressionVariable *entity(new ClangExpressionVariable(valobj));
|
|
m_found_entities.AddNewlyConstructedVariable(entity);
|
|
|
|
assert(entity);
|
|
entity->EnableParserVars(GetParserID());
|
|
ClangExpressionVariable::ParserVars *parser_vars =
|
|
entity->GetParserVars(GetParserID());
|
|
parser_vars->m_parser_type = pt;
|
|
parser_vars->m_named_decl = var_decl;
|
|
parser_vars->m_llvm_value = NULL;
|
|
parser_vars->m_lldb_value = var_location;
|
|
parser_vars->m_lldb_var = var;
|
|
|
|
if (is_reference)
|
|
entity->m_flags |= ClangExpressionVariable::EVTypeIsReference;
|
|
|
|
if (log) {
|
|
ASTDumper orig_dumper(ut.GetOpaqueQualType());
|
|
ASTDumper ast_dumper(var_decl);
|
|
log->Printf(" CEDM::FEVD[%u] Found variable %s, returned %s (original %s)",
|
|
current_id, decl_name.c_str(), ast_dumper.GetCString(),
|
|
orig_dumper.GetCString());
|
|
}
|
|
}
|
|
|
|
void ClangExpressionDeclMap::AddOneVariable(NameSearchContext &context,
|
|
ExpressionVariableSP &pvar_sp,
|
|
unsigned int current_id) {
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
|
|
|
|
TypeFromUser user_type(
|
|
llvm::cast<ClangExpressionVariable>(pvar_sp.get())->GetTypeFromUser());
|
|
|
|
TypeFromParser parser_type(GuardedCopyType(user_type));
|
|
|
|
if (!parser_type.GetOpaqueQualType()) {
|
|
if (log)
|
|
log->Printf(" CEDM::FEVD[%u] Couldn't import type for pvar %s",
|
|
current_id, pvar_sp->GetName().GetCString());
|
|
return;
|
|
}
|
|
|
|
NamedDecl *var_decl =
|
|
context.AddVarDecl(parser_type.GetLValueReferenceType());
|
|
|
|
llvm::cast<ClangExpressionVariable>(pvar_sp.get())
|
|
->EnableParserVars(GetParserID());
|
|
ClangExpressionVariable::ParserVars *parser_vars =
|
|
llvm::cast<ClangExpressionVariable>(pvar_sp.get())
|
|
->GetParserVars(GetParserID());
|
|
parser_vars->m_parser_type = parser_type;
|
|
parser_vars->m_named_decl = var_decl;
|
|
parser_vars->m_llvm_value = NULL;
|
|
parser_vars->m_lldb_value.Clear();
|
|
|
|
if (log) {
|
|
ASTDumper ast_dumper(var_decl);
|
|
log->Printf(" CEDM::FEVD[%u] Added pvar %s, returned %s", current_id,
|
|
pvar_sp->GetName().GetCString(), ast_dumper.GetCString());
|
|
}
|
|
}
|
|
|
|
void ClangExpressionDeclMap::AddOneGenericVariable(NameSearchContext &context,
|
|
const Symbol &symbol,
|
|
unsigned int current_id) {
|
|
assert(m_parser_vars.get());
|
|
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
|
|
|
|
Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr();
|
|
|
|
if (target == NULL)
|
|
return;
|
|
|
|
ASTContext *scratch_ast_context =
|
|
target->GetScratchClangASTContext()->getASTContext();
|
|
|
|
TypeFromUser user_type(
|
|
ClangASTContext::GetBasicType(scratch_ast_context, eBasicTypeVoid)
|
|
.GetPointerType()
|
|
.GetLValueReferenceType());
|
|
TypeFromParser parser_type(
|
|
ClangASTContext::GetBasicType(m_ast_context, eBasicTypeVoid)
|
|
.GetPointerType()
|
|
.GetLValueReferenceType());
|
|
NamedDecl *var_decl = context.AddVarDecl(parser_type);
|
|
|
|
std::string decl_name(context.m_decl_name.getAsString());
|
|
ConstString entity_name(decl_name.c_str());
|
|
ClangExpressionVariable *entity(new ClangExpressionVariable(
|
|
m_parser_vars->m_exe_ctx.GetBestExecutionContextScope(), entity_name,
|
|
user_type, m_parser_vars->m_target_info.byte_order,
|
|
m_parser_vars->m_target_info.address_byte_size));
|
|
m_found_entities.AddNewlyConstructedVariable(entity);
|
|
|
|
entity->EnableParserVars(GetParserID());
|
|
ClangExpressionVariable::ParserVars *parser_vars =
|
|
entity->GetParserVars(GetParserID());
|
|
|
|
const Address symbol_address = symbol.GetAddress();
|
|
lldb::addr_t symbol_load_addr = symbol_address.GetLoadAddress(target);
|
|
|
|
// parser_vars->m_lldb_value.SetContext(Value::eContextTypeClangType,
|
|
// user_type.GetOpaqueQualType());
|
|
parser_vars->m_lldb_value.SetCompilerType(user_type);
|
|
parser_vars->m_lldb_value.GetScalar() = symbol_load_addr;
|
|
parser_vars->m_lldb_value.SetValueType(Value::eValueTypeLoadAddress);
|
|
|
|
parser_vars->m_parser_type = parser_type;
|
|
parser_vars->m_named_decl = var_decl;
|
|
parser_vars->m_llvm_value = NULL;
|
|
parser_vars->m_lldb_sym = &symbol;
|
|
|
|
if (log) {
|
|
ASTDumper ast_dumper(var_decl);
|
|
|
|
log->Printf(" CEDM::FEVD[%u] Found variable %s, returned %s", current_id,
|
|
decl_name.c_str(), ast_dumper.GetCString());
|
|
}
|
|
}
|
|
|
|
bool ClangExpressionDeclMap::ResolveUnknownTypes() {
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
|
|
Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr();
|
|
|
|
ClangASTContextForExpressions *scratch_ast_context =
|
|
static_cast<ClangASTContextForExpressions*>(
|
|
target->GetScratchClangASTContext());
|
|
|
|
for (size_t index = 0, num_entities = m_found_entities.GetSize();
|
|
index < num_entities; ++index) {
|
|
ExpressionVariableSP entity = m_found_entities.GetVariableAtIndex(index);
|
|
|
|
ClangExpressionVariable::ParserVars *parser_vars =
|
|
llvm::cast<ClangExpressionVariable>(entity.get())
|
|
->GetParserVars(GetParserID());
|
|
|
|
if (entity->m_flags & ClangExpressionVariable::EVUnknownType) {
|
|
const NamedDecl *named_decl = parser_vars->m_named_decl;
|
|
const VarDecl *var_decl = dyn_cast<VarDecl>(named_decl);
|
|
|
|
if (!var_decl) {
|
|
if (log)
|
|
log->Printf("Entity of unknown type does not have a VarDecl");
|
|
return false;
|
|
}
|
|
|
|
if (log) {
|
|
ASTDumper ast_dumper(const_cast<VarDecl *>(var_decl));
|
|
log->Printf("Variable of unknown type now has Decl %s",
|
|
ast_dumper.GetCString());
|
|
}
|
|
|
|
QualType var_type = var_decl->getType();
|
|
TypeFromParser parser_type(
|
|
var_type.getAsOpaquePtr(),
|
|
ClangASTContext::GetASTContext(&var_decl->getASTContext()));
|
|
|
|
lldb::opaque_compiler_type_t copied_type = 0;
|
|
if (m_ast_importer_sp) {
|
|
copied_type = m_ast_importer_sp->CopyType(
|
|
scratch_ast_context->getASTContext(), &var_decl->getASTContext(),
|
|
var_type.getAsOpaquePtr());
|
|
} else if (HasMerger()) {
|
|
copied_type = CopyTypeWithMerger(
|
|
var_decl->getASTContext(),
|
|
scratch_ast_context->GetMergerUnchecked(),
|
|
var_type).getAsOpaquePtr();
|
|
} else {
|
|
lldbassert(0 && "No mechanism to copy a resolved unknown type!");
|
|
return false;
|
|
}
|
|
|
|
if (!copied_type) {
|
|
if (log)
|
|
log->Printf("ClangExpressionDeclMap::ResolveUnknownType - Couldn't "
|
|
"import the type for a variable");
|
|
|
|
return (bool)lldb::ExpressionVariableSP();
|
|
}
|
|
|
|
TypeFromUser user_type(copied_type, scratch_ast_context);
|
|
|
|
// parser_vars->m_lldb_value.SetContext(Value::eContextTypeClangType,
|
|
// user_type.GetOpaqueQualType());
|
|
parser_vars->m_lldb_value.SetCompilerType(user_type);
|
|
parser_vars->m_parser_type = parser_type;
|
|
|
|
entity->SetCompilerType(user_type);
|
|
|
|
entity->m_flags &= ~(ClangExpressionVariable::EVUnknownType);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void ClangExpressionDeclMap::AddOneRegister(NameSearchContext &context,
|
|
const RegisterInfo *reg_info,
|
|
unsigned int current_id) {
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
|
|
|
|
CompilerType clang_type =
|
|
ClangASTContext::GetBuiltinTypeForEncodingAndBitSize(
|
|
m_ast_context, reg_info->encoding, reg_info->byte_size * 8);
|
|
|
|
if (!clang_type) {
|
|
if (log)
|
|
log->Printf(" Tried to add a type for %s, but couldn't get one",
|
|
context.m_decl_name.getAsString().c_str());
|
|
return;
|
|
}
|
|
|
|
TypeFromParser parser_clang_type(clang_type);
|
|
|
|
NamedDecl *var_decl = context.AddVarDecl(parser_clang_type);
|
|
|
|
ClangExpressionVariable *entity(new ClangExpressionVariable(
|
|
m_parser_vars->m_exe_ctx.GetBestExecutionContextScope(),
|
|
m_parser_vars->m_target_info.byte_order,
|
|
m_parser_vars->m_target_info.address_byte_size));
|
|
m_found_entities.AddNewlyConstructedVariable(entity);
|
|
|
|
std::string decl_name(context.m_decl_name.getAsString());
|
|
entity->SetName(ConstString(decl_name.c_str()));
|
|
entity->SetRegisterInfo(reg_info);
|
|
entity->EnableParserVars(GetParserID());
|
|
ClangExpressionVariable::ParserVars *parser_vars =
|
|
entity->GetParserVars(GetParserID());
|
|
parser_vars->m_parser_type = parser_clang_type;
|
|
parser_vars->m_named_decl = var_decl;
|
|
parser_vars->m_llvm_value = NULL;
|
|
parser_vars->m_lldb_value.Clear();
|
|
entity->m_flags |= ClangExpressionVariable::EVBareRegister;
|
|
|
|
if (log) {
|
|
ASTDumper ast_dumper(var_decl);
|
|
log->Printf(" CEDM::FEVD[%d] Added register %s, returned %s", current_id,
|
|
context.m_decl_name.getAsString().c_str(),
|
|
ast_dumper.GetCString());
|
|
}
|
|
}
|
|
|
|
void ClangExpressionDeclMap::AddOneFunction(NameSearchContext &context,
|
|
Function *function, Symbol *symbol,
|
|
unsigned int current_id) {
|
|
assert(m_parser_vars.get());
|
|
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
|
|
|
|
NamedDecl *function_decl = NULL;
|
|
Address fun_address;
|
|
CompilerType function_clang_type;
|
|
|
|
bool is_indirect_function = false;
|
|
|
|
if (function) {
|
|
Type *function_type = function->GetType();
|
|
|
|
const auto lang = function->GetCompileUnit()->GetLanguage();
|
|
const auto name = function->GetMangled().GetMangledName().AsCString();
|
|
const bool extern_c = (Language::LanguageIsC(lang) &&
|
|
!CPlusPlusLanguage::IsCPPMangledName(name)) ||
|
|
(Language::LanguageIsObjC(lang) &&
|
|
!Language::LanguageIsCPlusPlus(lang));
|
|
|
|
if (!extern_c) {
|
|
TypeSystem *type_system = function->GetDeclContext().GetTypeSystem();
|
|
if (llvm::isa<ClangASTContext>(type_system)) {
|
|
clang::DeclContext *src_decl_context =
|
|
(clang::DeclContext *)function->GetDeclContext()
|
|
.GetOpaqueDeclContext();
|
|
clang::FunctionDecl *src_function_decl =
|
|
llvm::dyn_cast_or_null<clang::FunctionDecl>(src_decl_context);
|
|
if (src_function_decl &&
|
|
src_function_decl->getTemplateSpecializationInfo()) {
|
|
clang::FunctionTemplateDecl *function_template =
|
|
src_function_decl->getTemplateSpecializationInfo()->getTemplate();
|
|
clang::FunctionTemplateDecl *copied_function_template =
|
|
llvm::dyn_cast_or_null<clang::FunctionTemplateDecl>(
|
|
CopyDecl(function_template));
|
|
if (copied_function_template) {
|
|
if (log) {
|
|
ASTDumper ast_dumper((clang::Decl *)copied_function_template);
|
|
|
|
StreamString ss;
|
|
|
|
function->DumpSymbolContext(&ss);
|
|
|
|
log->Printf(" CEDM::FEVD[%u] Imported decl for function template"
|
|
" %s (description %s), returned %s",
|
|
current_id,
|
|
copied_function_template->getNameAsString().c_str(),
|
|
ss.GetData(), ast_dumper.GetCString());
|
|
}
|
|
|
|
context.AddNamedDecl(copied_function_template);
|
|
}
|
|
} else if (src_function_decl) {
|
|
if (clang::FunctionDecl *copied_function_decl =
|
|
llvm::dyn_cast_or_null<clang::FunctionDecl>(
|
|
CopyDecl(src_function_decl))) {
|
|
if (log) {
|
|
ASTDumper ast_dumper((clang::Decl *)copied_function_decl);
|
|
|
|
StreamString ss;
|
|
|
|
function->DumpSymbolContext(&ss);
|
|
|
|
log->Printf(" CEDM::FEVD[%u] Imported decl for function %s "
|
|
"(description %s), returned %s",
|
|
current_id,
|
|
copied_function_decl->getNameAsString().c_str(),
|
|
ss.GetData(), ast_dumper.GetCString());
|
|
}
|
|
|
|
context.AddNamedDecl(copied_function_decl);
|
|
return;
|
|
} else {
|
|
if (log) {
|
|
log->Printf(" Failed to import the function decl for '%s'",
|
|
src_function_decl->getName().str().c_str());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!function_type) {
|
|
if (log)
|
|
log->PutCString(" Skipped a function because it has no type");
|
|
return;
|
|
}
|
|
|
|
function_clang_type = function_type->GetFullCompilerType();
|
|
|
|
if (!function_clang_type) {
|
|
if (log)
|
|
log->PutCString(" Skipped a function because it has no Clang type");
|
|
return;
|
|
}
|
|
|
|
fun_address = function->GetAddressRange().GetBaseAddress();
|
|
|
|
CompilerType copied_function_type = GuardedCopyType(function_clang_type);
|
|
if (copied_function_type) {
|
|
function_decl = context.AddFunDecl(copied_function_type, extern_c);
|
|
|
|
if (!function_decl) {
|
|
if (log) {
|
|
log->Printf(
|
|
" Failed to create a function decl for '%s' {0x%8.8" PRIx64 "}",
|
|
function_type->GetName().GetCString(), function_type->GetID());
|
|
}
|
|
|
|
return;
|
|
}
|
|
} else {
|
|
// We failed to copy the type we found
|
|
if (log) {
|
|
log->Printf(" Failed to import the function type '%s' {0x%8.8" PRIx64
|
|
"} into the expression parser AST contenxt",
|
|
function_type->GetName().GetCString(),
|
|
function_type->GetID());
|
|
}
|
|
|
|
return;
|
|
}
|
|
} else if (symbol) {
|
|
fun_address = symbol->GetAddress();
|
|
function_decl = context.AddGenericFunDecl();
|
|
is_indirect_function = symbol->IsIndirect();
|
|
} else {
|
|
if (log)
|
|
log->PutCString(" AddOneFunction called with no function and no symbol");
|
|
return;
|
|
}
|
|
|
|
Target *target = m_parser_vars->m_exe_ctx.GetTargetPtr();
|
|
|
|
lldb::addr_t load_addr =
|
|
fun_address.GetCallableLoadAddress(target, is_indirect_function);
|
|
|
|
ClangExpressionVariable *entity(new ClangExpressionVariable(
|
|
m_parser_vars->m_exe_ctx.GetBestExecutionContextScope(),
|
|
m_parser_vars->m_target_info.byte_order,
|
|
m_parser_vars->m_target_info.address_byte_size));
|
|
m_found_entities.AddNewlyConstructedVariable(entity);
|
|
|
|
std::string decl_name(context.m_decl_name.getAsString());
|
|
entity->SetName(ConstString(decl_name.c_str()));
|
|
entity->SetCompilerType(function_clang_type);
|
|
entity->EnableParserVars(GetParserID());
|
|
|
|
ClangExpressionVariable::ParserVars *parser_vars =
|
|
entity->GetParserVars(GetParserID());
|
|
|
|
if (load_addr != LLDB_INVALID_ADDRESS) {
|
|
parser_vars->m_lldb_value.SetValueType(Value::eValueTypeLoadAddress);
|
|
parser_vars->m_lldb_value.GetScalar() = load_addr;
|
|
} else {
|
|
// We have to try finding a file address.
|
|
|
|
lldb::addr_t file_addr = fun_address.GetFileAddress();
|
|
|
|
parser_vars->m_lldb_value.SetValueType(Value::eValueTypeFileAddress);
|
|
parser_vars->m_lldb_value.GetScalar() = file_addr;
|
|
}
|
|
|
|
parser_vars->m_named_decl = function_decl;
|
|
parser_vars->m_llvm_value = NULL;
|
|
|
|
if (log) {
|
|
ASTDumper ast_dumper(function_decl);
|
|
|
|
StreamString ss;
|
|
|
|
fun_address.Dump(&ss,
|
|
m_parser_vars->m_exe_ctx.GetBestExecutionContextScope(),
|
|
Address::DumpStyleResolvedDescription);
|
|
|
|
log->Printf(
|
|
" CEDM::FEVD[%u] Found %s function %s (description %s), returned %s",
|
|
current_id, (function ? "specific" : "generic"), decl_name.c_str(),
|
|
ss.GetData(), ast_dumper.GetCString());
|
|
}
|
|
}
|
|
|
|
void ClangExpressionDeclMap::AddThisType(NameSearchContext &context,
|
|
TypeFromUser &ut,
|
|
unsigned int current_id) {
|
|
CompilerType copied_clang_type = GuardedCopyType(ut);
|
|
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
|
|
|
|
if (!copied_clang_type) {
|
|
if (log)
|
|
log->Printf(
|
|
"ClangExpressionDeclMap::AddThisType - Couldn't import the type");
|
|
|
|
return;
|
|
}
|
|
|
|
if (copied_clang_type.IsAggregateType() &&
|
|
copied_clang_type.GetCompleteType()) {
|
|
CompilerType void_clang_type =
|
|
ClangASTContext::GetBasicType(m_ast_context, eBasicTypeVoid);
|
|
CompilerType void_ptr_clang_type = void_clang_type.GetPointerType();
|
|
|
|
CompilerType method_type = ClangASTContext::CreateFunctionType(
|
|
m_ast_context, void_clang_type, &void_ptr_clang_type, 1, false, 0);
|
|
|
|
const bool is_virtual = false;
|
|
const bool is_static = false;
|
|
const bool is_inline = false;
|
|
const bool is_explicit = false;
|
|
const bool is_attr_used = true;
|
|
const bool is_artificial = false;
|
|
|
|
CXXMethodDecl *method_decl =
|
|
ClangASTContext::GetASTContext(m_ast_context)
|
|
->AddMethodToCXXRecordType(
|
|
copied_clang_type.GetOpaqueQualType(), "$__lldb_expr",
|
|
method_type, lldb::eAccessPublic, is_virtual, is_static,
|
|
is_inline, is_explicit, is_attr_used, is_artificial);
|
|
|
|
if (log) {
|
|
ASTDumper method_ast_dumper((clang::Decl *)method_decl);
|
|
ASTDumper type_ast_dumper(copied_clang_type);
|
|
|
|
log->Printf(" CEDM::AddThisType Added function $__lldb_expr "
|
|
"(description %s) for this type %s",
|
|
method_ast_dumper.GetCString(), type_ast_dumper.GetCString());
|
|
}
|
|
}
|
|
|
|
if (!copied_clang_type.IsValid())
|
|
return;
|
|
|
|
TypeSourceInfo *type_source_info = m_ast_context->getTrivialTypeSourceInfo(
|
|
QualType::getFromOpaquePtr(copied_clang_type.GetOpaqueQualType()));
|
|
|
|
if (!type_source_info)
|
|
return;
|
|
|
|
// Construct a typedef type because if "*this" is a templated type we can't
|
|
// just return ClassTemplateSpecializationDecls in response to name queries.
|
|
// Using a typedef makes this much more robust.
|
|
|
|
TypedefDecl *typedef_decl = TypedefDecl::Create(
|
|
*m_ast_context, m_ast_context->getTranslationUnitDecl(), SourceLocation(),
|
|
SourceLocation(), context.m_decl_name.getAsIdentifierInfo(),
|
|
type_source_info);
|
|
|
|
if (!typedef_decl)
|
|
return;
|
|
|
|
context.AddNamedDecl(typedef_decl);
|
|
|
|
return;
|
|
}
|
|
|
|
void ClangExpressionDeclMap::AddOneType(NameSearchContext &context,
|
|
TypeFromUser &ut,
|
|
unsigned int current_id) {
|
|
CompilerType copied_clang_type = GuardedCopyType(ut);
|
|
|
|
if (!copied_clang_type) {
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
|
|
|
|
if (log)
|
|
log->Printf(
|
|
"ClangExpressionDeclMap::AddOneType - Couldn't import the type");
|
|
|
|
return;
|
|
}
|
|
|
|
context.AddTypeDecl(copied_clang_type);
|
|
}
|