Initial checkin of lldb code from internal Apple repo.
git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@105619 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Expression/ClangASTSource.cpp b/source/Expression/ClangASTSource.cpp
new file mode 100644
index 0000000..996c205
--- /dev/null
+++ b/source/Expression/ClangASTSource.cpp
@@ -0,0 +1,101 @@
+/*
+ * ClangASTSource.cpp
+ * lldb
+ *
+ * Created by John McCall on 6/1/10.
+ * Copyright 2010 Apple. All rights reserved.
+ *
+ */
+
+#define NO_RTTI
+
+#include "clang/AST/ASTContext.h"
+#include "lldb/Expression/ClangASTSource.h"
+#include "lldb/Expression/ClangExpression.h"
+#include "lldb/Expression/ClangExpressionDeclMap.h"
+
+using namespace clang;
+using namespace lldb_private;
+
+ClangASTSource::~ClangASTSource() {}
+
+void ClangASTSource::StartTranslationUnit(ASTConsumer *Consumer) {
+ // Tell Sema to ask us when looking into the translation unit's decl.
+ Context.getTranslationUnitDecl()->setHasExternalVisibleStorage();
+ Context.getTranslationUnitDecl()->setHasExternalLexicalStorage();
+}
+
+// These are only required for AST source that want to lazily load
+// the declarations (or parts thereof) that they return.
+Decl *ClangASTSource::GetExternalDecl(uint32_t) { return 0; }
+Stmt *ClangASTSource::GetExternalDeclStmt(uint64_t) { return 0; }
+
+// These are also optional, although it might help with ObjC
+// debugging if we have respectable signatures. But a more
+// efficient interface (that didn't require scanning all files
+// for method signatures!) might help.
+Selector ClangASTSource::GetExternalSelector(uint32_t) { return Selector(); }
+uint32_t ClangASTSource::GetNumExternalSelectors() { return 0; }
+
+// The core lookup interface.
+DeclContext::lookup_result ClangASTSource::FindExternalVisibleDeclsByName(const DeclContext *DC, DeclarationName Name) {
+ switch (Name.getNameKind()) {
+ // Normal identifiers.
+ case DeclarationName::Identifier:
+ break;
+
+ // Operator names. Not important for now.
+ case DeclarationName::CXXOperatorName:
+ case DeclarationName::CXXLiteralOperatorName:
+ return DeclContext::lookup_result();
+
+ // Using directives found in this context.
+ // Tell Sema we didn't find any or we'll end up getting asked a *lot*.
+ case DeclarationName::CXXUsingDirective:
+ return SetNoExternalVisibleDeclsForName(DC, Name);
+
+ // These aren't looked up like this.
+ case DeclarationName::ObjCZeroArgSelector:
+ case DeclarationName::ObjCOneArgSelector:
+ case DeclarationName::ObjCMultiArgSelector:
+ return DeclContext::lookup_result();
+
+ // These aren't possible in the global context.
+ case DeclarationName::CXXConstructorName:
+ case DeclarationName::CXXDestructorName:
+ case DeclarationName::CXXConversionFunctionName:
+ return DeclContext::lookup_result();
+ }
+
+ llvm::SmallVector<NamedDecl*, 4> Decls;
+
+ NameSearchContext NSC(*this, Decls, Name, DC);
+
+ DeclMap.GetDecls(NSC, Name.getAsString().c_str());
+ return SetExternalVisibleDeclsForName(DC, Name, Decls);
+}
+
+// This is used to support iterating through an entire lexical context,
+// which isn't something the debugger should ever need to do.
+bool ClangASTSource::FindExternalLexicalDecls(const DeclContext *DC, llvm::SmallVectorImpl<Decl*> &Decls) {
+ // true is for error, that's good enough for me
+ return true;
+}
+
+clang::ASTContext *NameSearchContext::GetASTContext() {
+ return &ASTSource.Context;
+}
+
+clang::NamedDecl *NameSearchContext::AddVarDecl(void *type) {
+ clang::NamedDecl *Decl = VarDecl::Create(ASTSource.Context,
+ const_cast<DeclContext*>(DC),
+ SourceLocation(),
+ Name.getAsIdentifierInfo(),
+ QualType::getFromOpaquePtr(type),
+ 0,
+ VarDecl::Static,
+ VarDecl::Static);
+ Decls.push_back(Decl);
+
+ return Decl;
+}
diff --git a/source/Expression/ClangExpression.cpp b/source/Expression/ClangExpression.cpp
new file mode 100644
index 0000000..f7742c6
--- /dev/null
+++ b/source/Expression/ClangExpression.cpp
@@ -0,0 +1,633 @@
+//===-- ClangExpression.cpp -------------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// C Includes
+#include <stdio.h>
+#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+// C++ Includes
+#include <cstdlib>
+#include <string>
+#include <map>
+
+// Other libraries and framework includes
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/ExternalASTSource.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/Basic/TargetInfo.h"
+#include "clang/Basic/Version.h"
+#include "clang/CodeGen/ModuleBuilder.h"
+#include "clang/Driver/CC1Options.h"
+#include "clang/Driver/OptTable.h"
+#include "clang/Frontend/CodeGenAction.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "clang/Frontend/CompilerInvocation.h"
+#include "clang/Frontend/FrontendActions.h"
+#include "clang/Frontend/FrontendDiagnostic.h"
+#include "clang/Frontend/FrontendPluginRegistry.h"
+#include "clang/Frontend/TextDiagnosticBuffer.h"
+#include "clang/Frontend/TextDiagnosticPrinter.h"
+#include "clang/Frontend/VerifyDiagnosticsClient.h"
+#include "clang/Lex/Preprocessor.h"
+#include "clang/Sema/ParseAST.h"
+#include "llvm/ExecutionEngine/ExecutionEngine.h"
+#include "llvm/ExecutionEngine/JIT.h"
+#include "llvm/Module.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/LLVMContext.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/System/DynamicLibrary.h"
+#include "llvm/System/Host.h"
+#include "llvm/System/Signals.h"
+#include "llvm/Target/TargetSelect.h"
+
+// Project includes
+#include "lldb/Expression/ClangExpression.h"
+#include "lldb/Expression/ClangASTSource.h"
+#include "lldb/Expression/ClangStmtVisitor.h"
+#include "lldb/Symbol/ClangASTContext.h"
+#include "lldb/Expression/RecordingMemoryManager.h"
+#include "lldb/Target/ExecutionContext.h"
+#include "lldb/Target/Process.h"
+
+#define NO_RTTI
+#include "lldb/Core/StreamString.h"
+#include "lldb/Host/Mutex.h"
+#include "lldb/Core/dwarf.h"
+
+
+using namespace lldb_private;
+using namespace clang;
+using namespace llvm;
+
+namespace clang {
+
+class AnalyzerOptions;
+class CodeGenOptions;
+class DependencyOutputOptions;
+class DiagnosticOptions;
+class FrontendOptions;
+class HeaderSearchOptions;
+class LangOptions;
+class PreprocessorOptions;
+class PreprocessorOutputOptions;
+class TargetInfo;
+class TargetOptions;
+
+} // end namespace clang
+
+
+
+//===----------------------------------------------------------------------===//
+// Utility Methods
+//===----------------------------------------------------------------------===//
+
+std::string GetBuiltinIncludePath(const char *Argv0) {
+ llvm::sys::Path P =
+ llvm::sys::Path::GetMainExecutable(Argv0,
+ (void*)(intptr_t) GetBuiltinIncludePath);
+
+ if (!P.isEmpty()) {
+ P.eraseComponent(); // Remove /clang from foo/bin/clang
+ P.eraseComponent(); // Remove /bin from foo/bin
+
+ // Get foo/lib/clang/<version>/include
+ P.appendComponent("lib");
+ P.appendComponent("clang");
+ P.appendComponent(CLANG_VERSION_STRING);
+ P.appendComponent("include");
+ }
+
+ return P.str();
+}
+
+
+//===----------------------------------------------------------------------===//
+// Main driver
+//===----------------------------------------------------------------------===//
+
+void LLVMErrorHandler(void *UserData, const std::string &Message) {
+ Diagnostic &Diags = *static_cast<Diagnostic*>(UserData);
+
+ Diags.Report(diag::err_fe_error_backend) << Message;
+
+ // We cannot recover from llvm errors.
+ exit(1);
+}
+
+static FrontendAction *CreateFrontendBaseAction(CompilerInstance &CI) {
+ using namespace clang::frontend;
+
+ switch (CI.getFrontendOpts().ProgramAction) {
+ default:
+ llvm_unreachable("Invalid program action!");
+
+ case ASTDump: return new ASTDumpAction();
+ case ASTPrint: return new ASTPrintAction();
+ case ASTPrintXML: return new ASTPrintXMLAction();
+ case ASTView: return new ASTViewAction();
+ case DumpRawTokens: return new DumpRawTokensAction();
+ case DumpTokens: return new DumpTokensAction();
+ case EmitAssembly: return new EmitAssemblyAction();
+ case EmitBC: return new EmitBCAction();
+ case EmitHTML: return new HTMLPrintAction();
+ case EmitLLVM: return new EmitLLVMAction();
+ case EmitLLVMOnly: return new EmitLLVMOnlyAction();
+ case EmitObj: return new EmitObjAction();
+ case FixIt: return new FixItAction();
+ case GeneratePCH: return new GeneratePCHAction();
+ case GeneratePTH: return new GeneratePTHAction();
+ case InheritanceView: return new InheritanceViewAction();
+ case InitOnly: return new InitOnlyAction();
+ case ParseNoop: return new ParseOnlyAction();
+ case ParsePrintCallbacks: return new PrintParseAction();
+ case ParseSyntaxOnly: return new SyntaxOnlyAction();
+
+ case PluginAction: {
+ if (CI.getFrontendOpts().ActionName == "help") {
+ llvm::errs() << "clang -cc1 plugins:\n";
+ for (FrontendPluginRegistry::iterator it =
+ FrontendPluginRegistry::begin(),
+ ie = FrontendPluginRegistry::end();
+ it != ie; ++it)
+ llvm::errs() << " " << it->getName() << " - " << it->getDesc() << "\n";
+ return 0;
+ }
+
+ for (FrontendPluginRegistry::iterator it =
+ FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end();
+ it != ie; ++it) {
+ if (it->getName() == CI.getFrontendOpts().ActionName)
+ return it->instantiate();
+ }
+
+ CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name)
+ << CI.getFrontendOpts().ActionName;
+ return 0;
+ }
+
+ case PrintDeclContext: return new DeclContextPrintAction();
+ case PrintPreprocessedInput: return new PrintPreprocessedAction();
+ case RewriteMacros: return new RewriteMacrosAction();
+ case RewriteObjC: return new RewriteObjCAction();
+ case RewriteTest: return new RewriteTestAction();
+ case RunAnalysis: return new AnalysisAction();
+ case RunPreprocessorOnly: return new PreprocessOnlyAction();
+ }
+}
+
+//----------------------------------------------------------------------
+// ClangExpression constructor
+//----------------------------------------------------------------------
+ClangExpression::ClangExpression(const char *target_triple,
+ ClangExpressionDeclMap *decl_map) :
+ m_target_triple (),
+ m_jit_mm_ptr (NULL),
+ m_code_generator_ptr (NULL),
+ m_decl_map (decl_map)
+{
+ if (target_triple && target_triple[0])
+ m_target_triple = target_triple;
+ else
+ m_target_triple = llvm::sys::getHostTriple();
+}
+
+
+//----------------------------------------------------------------------
+// Destructor
+//----------------------------------------------------------------------
+ClangExpression::~ClangExpression()
+{
+ if (m_code_generator_ptr && !m_execution_engine.get())
+ delete m_code_generator_ptr;
+}
+
+bool
+ClangExpression::CreateCompilerInstance (bool &IsAST)
+{
+ // Initialize targets first, so that --version shows registered targets.
+ static struct InitializeLLVM {
+ InitializeLLVM() {
+ llvm::InitializeAllTargets();
+ llvm::InitializeAllAsmPrinters();
+ }
+ } InitializeLLVM;
+
+ // 1. Create a new compiler instance.
+ m_clang_ap.reset(new CompilerInstance());
+ m_clang_ap->setLLVMContext(new LLVMContext());
+
+ // 2. Set options.
+
+ // Parse expressions as Objective C++ regardless of context.
+ // Our hook into Clang's lookup mechanism only works in C++.
+ m_clang_ap->getLangOpts().CPlusPlus = true;
+ m_clang_ap->getLangOpts().ObjC1 = true;
+
+ // Disable some warnings.
+ m_clang_ap->getDiagnosticOpts().Warnings.push_back("no-unused-value");
+
+ // Set the target triple.
+ m_clang_ap->getTargetOpts().Triple = m_target_triple;
+
+ // 3. Set up various important bits of infrastructure.
+
+ m_clang_ap->createDiagnostics(0, 0);
+ m_clang_ap->getLangOpts().CPlusPlus = true;
+
+ // Create the target instance.
+ m_clang_ap->setTarget(TargetInfo::CreateTargetInfo(m_clang_ap->getDiagnostics(),
+ m_clang_ap->getTargetOpts()));
+ if (!m_clang_ap->hasTarget())
+ {
+ m_clang_ap.reset();
+ return false;
+ }
+
+ // Inform the target of the language options
+ //
+ // FIXME: We shouldn't need to do this, the target should be immutable once
+ // created. This complexity should be lifted elsewhere.
+ m_clang_ap->getTarget().setForcedLangOptions(m_clang_ap->getLangOpts());
+
+ return m_clang_ap.get();
+}
+
+Mutex &
+ClangExpression::GetClangMutex ()
+{
+ static Mutex g_clang_mutex(Mutex::eMutexTypeRecursive); // Control access to the clang compiler
+ return g_clang_mutex;
+}
+
+
+clang::ASTContext *
+ClangExpression::GetASTContext ()
+{
+ CompilerInstance *compiler_instance = GetCompilerInstance();
+ if (compiler_instance)
+ return &compiler_instance->getASTContext();
+ return NULL;
+}
+
+unsigned
+ClangExpression::ParseExpression (const char *expr_text, Stream &stream)
+{
+ // HACK: for now we have to make a function body around our expression
+ // since there is no way to parse a single expression line in LLVM/Clang.
+ std::string func_expr("void ___clang_expr()\n{\n\t");
+ func_expr.append(expr_text);
+ func_expr.append(";\n}");
+ return ParseBareExpression (func_expr, stream);
+
+}
+
+unsigned
+ClangExpression::ParseBareExpression (llvm::StringRef expr_text, Stream &stream)
+{
+ Mutex::Locker locker(GetClangMutex ());
+
+ TextDiagnosticBuffer text_diagnostic_buffer;
+
+ bool IsAST = false;
+ if (!CreateCompilerInstance (IsAST))
+ {
+ stream.Printf("error: couldn't create compiler instance\n");
+ return 1;
+ }
+
+ // This code is matched below by a setClient to NULL.
+ // We cannot return out of this code without doing that.
+ m_clang_ap->getDiagnostics().setClient(&text_diagnostic_buffer);
+ text_diagnostic_buffer.FlushDiagnostics (m_clang_ap->getDiagnostics());
+
+ MemoryBuffer *memory_buffer = MemoryBuffer::getMemBufferCopy(expr_text, __FUNCTION__);
+
+ if (!m_clang_ap->hasSourceManager())
+ m_clang_ap->createSourceManager();
+
+ m_clang_ap->createFileManager();
+ m_clang_ap->createPreprocessor();
+
+ // Build the ASTContext. Most of this we inherit from the
+ // CompilerInstance, but we also want to give the context
+ // an ExternalASTSource.
+ SelectorTable selector_table;
+ std::auto_ptr<Builtin::Context> builtin_ap(new Builtin::Context(m_clang_ap->getTarget()));
+ ASTContext *Context = new ASTContext(m_clang_ap->getLangOpts(),
+ m_clang_ap->getSourceManager(),
+ m_clang_ap->getTarget(),
+ m_clang_ap->getPreprocessor().getIdentifierTable(),
+ selector_table,
+ *builtin_ap.get());
+
+ llvm::OwningPtr<ExternalASTSource> ASTSource(new ClangASTSource(*Context, *m_decl_map));
+
+ if (m_decl_map)
+ {
+ Context->setExternalSource(ASTSource);
+ }
+
+ m_clang_ap->setASTContext(Context);
+
+ FileID memory_buffer_file_id = m_clang_ap->getSourceManager().createMainFileIDForMemBuffer (memory_buffer);
+ std::string module_name("test_func");
+ text_diagnostic_buffer.BeginSourceFile(m_clang_ap->getLangOpts(), &m_clang_ap->getPreprocessor());
+
+ if (m_code_generator_ptr)
+ delete m_code_generator_ptr;
+
+ m_code_generator_ptr = CreateLLVMCodeGen(m_clang_ap->getDiagnostics(),
+ module_name,
+ m_clang_ap->getCodeGenOpts(),
+ m_clang_ap->getLLVMContext());
+
+
+ // - CodeGeneration ASTConsumer (include/clang/ModuleBuilder.h), which will be passed in when you call...
+ // - Call clang::ParseAST (in lib/Sema/ParseAST.cpp) to parse the buffer. The CodeGenerator will generate code for __dbg_expr.
+ // - Once ParseAST completes, you can grab the llvm::Module from the CodeGenerator, which will have an llvm::Function you can hand off to the JIT.
+ ParseAST(m_clang_ap->getPreprocessor(), m_code_generator_ptr, m_clang_ap->getASTContext());
+
+ text_diagnostic_buffer.EndSourceFile();
+
+ //compiler_instance->getASTContext().getTranslationUnitDecl()->dump();
+
+ //if (compiler_instance->getFrontendOpts().ShowStats) {
+ // compiler_instance->getFileManager().PrintStats();
+ // fprintf(stderr, "\n");
+ //}
+
+ // This code resolves the setClient above.
+ m_clang_ap->getDiagnostics().setClient(0);
+
+ TextDiagnosticBuffer::const_iterator diag_iterator;
+
+ int num_errors = 0;
+
+#ifdef COUNT_WARNINGS_AND_ERRORS
+ int num_warnings = 0;
+
+ for (diag_iterator = text_diagnostic_buffer.warn_begin();
+ diag_iterator != text_diagnostic_buffer.warn_end();
+ ++diag_iterator)
+ num_warnings++;
+
+ for (diag_iterator = text_diagnostic_buffer.err_begin();
+ diag_iterator != text_diagnostic_buffer.err_end();
+ ++diag_iterator)
+ num_errors++;
+
+ if (num_warnings || num_errors)
+ {
+ if (num_warnings)
+ stream.Printf("%u warning%s%s", num_warnings, (num_warnings == 1 ? "" : "s"), (num_errors ? " and " : ""));
+ if (num_errors)
+ stream.Printf("%u error%s", num_errors, (num_errors == 1 ? "" : "s"));
+ stream.Printf("\n");
+ }
+#endif
+
+ for (diag_iterator = text_diagnostic_buffer.warn_begin();
+ diag_iterator != text_diagnostic_buffer.warn_end();
+ ++diag_iterator)
+ stream.Printf("warning: %s\n", (*diag_iterator).second.c_str());
+
+ num_errors = 0;
+
+ for (diag_iterator = text_diagnostic_buffer.err_begin();
+ diag_iterator != text_diagnostic_buffer.err_end();
+ ++diag_iterator)
+ {
+ num_errors++;
+ stream.Printf("error: %s\n", (*diag_iterator).second.c_str());
+ }
+
+ return num_errors;
+}
+
+
+static FrontendAction *
+CreateFrontendAction(CompilerInstance &CI)
+{
+ // Create the underlying action.
+ FrontendAction *Act = CreateFrontendBaseAction(CI);
+ if (!Act)
+ return 0;
+
+ // If there are any AST files to merge, create a frontend action
+ // adaptor to perform the merge.
+ if (!CI.getFrontendOpts().ASTMergeFiles.empty())
+ Act = new ASTMergeAction(Act, &CI.getFrontendOpts().ASTMergeFiles[0],
+ CI.getFrontendOpts().ASTMergeFiles.size());
+
+ return Act;
+}
+
+
+unsigned
+ClangExpression::ConvertExpressionToDWARF (ClangExpressionVariableList& expr_local_variable_list,
+ StreamString &dwarf_opcode_strm)
+{
+ CompilerInstance *compiler_instance = GetCompilerInstance();
+
+ DeclarationName hack_func_name(&compiler_instance->getASTContext().Idents.get("___clang_expr"));
+ DeclContext::lookup_result result = compiler_instance->getASTContext().getTranslationUnitDecl()->lookup(hack_func_name);
+
+ if (result.first != result.second)
+ {
+ Decl *decl = *result.first;
+ Stmt *decl_stmt = decl->getBody();
+ if (decl_stmt)
+ {
+ ClangStmtVisitor visitor(compiler_instance->getASTContext(), expr_local_variable_list, m_decl_map, dwarf_opcode_strm);
+
+ visitor.Visit (decl_stmt);
+ }
+ }
+ return 0;
+}
+
+bool
+ClangExpression::JITFunction (const ExecutionContext &exc_context, const char *name)
+{
+
+ llvm::Module *module = m_code_generator_ptr->GetModule();
+
+ if (module)
+ {
+ std::string error;
+
+ if (m_jit_mm_ptr == NULL)
+ m_jit_mm_ptr = new RecordingMemoryManager();
+
+ //llvm::InitializeNativeTarget();
+ if (m_execution_engine.get() == 0)
+ m_execution_engine.reset(llvm::ExecutionEngine::createJIT (module, &error, m_jit_mm_ptr));
+ m_execution_engine->DisableLazyCompilation();
+ llvm::Function *function = module->getFunction (llvm::StringRef (name));
+
+ // We don't actually need the function pointer here, this just forces it to get resolved.
+ void *fun_ptr = m_execution_engine->getPointerToFunction(function);
+ // Note, you probably won't get here on error, since the LLVM JIT tends to just
+ // exit on error at present... So be careful.
+ if (fun_ptr == 0)
+ return false;
+ m_jitted_functions.push_back(ClangExpression::JittedFunction(name, (lldb::addr_t) fun_ptr));
+
+ }
+ return true;
+}
+
+bool
+ClangExpression::WriteJITCode (const ExecutionContext &exc_context)
+{
+ if (m_jit_mm_ptr == NULL)
+ return false;
+
+ if (exc_context.process == NULL)
+ return false;
+
+ // Look over the regions allocated for the function compiled. The JIT
+ // tries to allocate the functions & stubs close together, so we should try to
+ // write them that way too...
+ // For now I only write functions with no stubs, globals, exception tables,
+ // etc. So I only need to write the functions.
+
+ size_t size = 0;
+ std::map<uint8_t *, uint8_t *>::iterator fun_pos, fun_end = m_jit_mm_ptr->m_functions.end();
+ for (fun_pos = m_jit_mm_ptr->m_functions.begin(); fun_pos != fun_end; fun_pos++)
+ {
+ size += (*fun_pos).second - (*fun_pos).first;
+ }
+
+ Error error;
+ lldb::addr_t target_addr = exc_context.process->AllocateMemory (size, lldb::ePermissionsReadable|lldb::ePermissionsExecutable, error);
+
+ if (target_addr == LLDB_INVALID_ADDRESS)
+ return false;
+
+ lldb::addr_t cursor = target_addr;
+ for (fun_pos = m_jit_mm_ptr->m_functions.begin(); fun_pos != fun_end; fun_pos++)
+ {
+ lldb::addr_t lstart = (lldb::addr_t) (*fun_pos).first;
+ lldb::addr_t lend = (lldb::addr_t) (*fun_pos).second;
+ size_t size = lend - lstart;
+ exc_context.process->WriteMemory(cursor, (void *) lstart, size, error);
+ m_jit_mm_ptr->AddToLocalToRemoteMap (lstart, size, cursor);
+ cursor += size;
+ }
+
+ std::vector<JittedFunction>::iterator pos, end = m_jitted_functions.end();
+
+ for (pos = m_jitted_functions.begin(); pos != end; pos++)
+ {
+ (*pos).m_remote_addr = m_jit_mm_ptr->GetRemoteAddressForLocal ((*pos).m_local_addr);
+ }
+ return true;
+}
+
+lldb::addr_t
+ClangExpression::GetFunctionAddress (const char *name)
+{
+ std::vector<JittedFunction>::iterator pos, end = m_jitted_functions.end();
+
+ for (pos = m_jitted_functions.begin(); pos < end; pos++)
+ {
+ if (strcmp ((*pos).m_name.c_str(), name) == 0)
+ return (*pos).m_remote_addr;
+ }
+ return LLDB_INVALID_ADDRESS;
+}
+
+unsigned
+ClangExpression::Compile()
+{
+ Mutex::Locker locker(GetClangMutex ());
+ bool IsAST = false;
+
+ if (CreateCompilerInstance(IsAST))
+ {
+ // Validate/process some options
+ if (m_clang_ap->getHeaderSearchOpts().Verbose)
+ llvm::errs() << "clang-cc version " CLANG_VERSION_STRING
+ << " based upon " << PACKAGE_STRING
+ << " hosted on " << llvm::sys::getHostTriple() << "\n";
+
+ // Enforce certain implications.
+ if (!m_clang_ap->getFrontendOpts().ViewClassInheritance.empty())
+ m_clang_ap->getFrontendOpts().ProgramAction = frontend::InheritanceView;
+// if (!compiler_instance->getFrontendOpts().FixItSuffix.empty())
+// compiler_instance->getFrontendOpts().ProgramAction = frontend::FixIt;
+
+ for (unsigned i = 0, e = m_clang_ap->getFrontendOpts().Inputs.size(); i != e; ++i) {
+ const std::string &InFile = m_clang_ap->getFrontendOpts().Inputs[i].second;
+
+ // If we aren't using an AST file, setup the file and source managers and
+ // the preprocessor.
+ if (!IsAST) {
+ if (!i) {
+ // Create a file manager object to provide access to and cache the
+ // filesystem.
+ m_clang_ap->createFileManager();
+
+ // Create the source manager.
+ m_clang_ap->createSourceManager();
+ } else {
+ // Reset the ID tables if we are reusing the SourceManager.
+ m_clang_ap->getSourceManager().clearIDTables();
+ }
+
+ // Create the preprocessor.
+ m_clang_ap->createPreprocessor();
+ }
+
+ llvm::OwningPtr<FrontendAction> Act(CreateFrontendAction(*m_clang_ap.get()));
+ if (!Act)
+ break;
+
+ if (Act->BeginSourceFile(*m_clang_ap, InFile, IsAST)) {
+ Act->Execute();
+ Act->EndSourceFile();
+ }
+ }
+
+ if (m_clang_ap->getDiagnosticOpts().ShowCarets)
+ {
+ unsigned NumWarnings = m_clang_ap->getDiagnostics().getNumWarnings();
+ unsigned NumErrors = m_clang_ap->getDiagnostics().getNumErrors() -
+ m_clang_ap->getDiagnostics().getNumErrorsSuppressed();
+
+ if (NumWarnings || NumErrors)
+ {
+ if (NumWarnings)
+ fprintf (stderr, "%u warning%s%s", NumWarnings, (NumWarnings == 1 ? "" : "s"), (NumErrors ? " and " : ""));
+ if (NumErrors)
+ fprintf (stderr, "%u error%s", NumErrors, (NumErrors == 1 ? "" : "s"));
+ fprintf (stderr, " generated.\n");
+ }
+ }
+
+ if (m_clang_ap->getFrontendOpts().ShowStats) {
+ m_clang_ap->getFileManager().PrintStats();
+ fprintf(stderr, "\n");
+ }
+
+ // Return the appropriate status when verifying diagnostics.
+ //
+ // FIXME: If we could make getNumErrors() do the right thing, we wouldn't need
+ // this.
+ if (m_clang_ap->getDiagnosticOpts().VerifyDiagnostics)
+ return static_cast<VerifyDiagnosticsClient&>(m_clang_ap->getDiagnosticClient()).HadErrors();
+
+ return m_clang_ap->getDiagnostics().getNumErrors();
+ }
+ return 1;
+}
diff --git a/source/Expression/ClangExpressionDeclMap.cpp b/source/Expression/ClangExpressionDeclMap.cpp
new file mode 100644
index 0000000..1065211
--- /dev/null
+++ b/source/Expression/ClangExpressionDeclMap.cpp
@@ -0,0 +1,246 @@
+//===-- ClangExpressionDeclMap.cpp -----------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Expression/ClangExpressionDeclMap.h"
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+#include "lldb/lldb-private.h"
+#include "lldb/Core/Address.h"
+#include "lldb/Core/Module.h"
+#include "lldb/Expression/ClangASTSource.h"
+#include "lldb/Symbol/ClangASTContext.h"
+#include "lldb/Symbol/CompileUnit.h"
+#include "lldb/Symbol/Function.h"
+#include "lldb/Symbol/ObjectFile.h"
+#include "lldb/Symbol/SymbolContext.h"
+#include "lldb/Symbol/Type.h"
+#include "lldb/Symbol/TypeList.h"
+#include "lldb/Symbol/Variable.h"
+#include "lldb/Symbol/VariableList.h"
+#include "lldb/Target/StackFrame.h"
+#include "lldb/Target/ExecutionContext.h"
+
+//#define DEBUG_CEDM
+#ifdef DEBUG_CEDM
+#define DEBUG_PRINTF(...) fprintf(stderr, __VA_ARGS__)
+#else
+#define DEBUG_PRINTF(...)
+#endif
+
+using namespace lldb_private;
+using namespace clang;
+
+ClangExpressionDeclMap::ClangExpressionDeclMap(ExecutionContext *exe_ctx) :
+ m_exe_ctx(exe_ctx)
+{
+ if (exe_ctx && exe_ctx->frame)
+ m_sym_ctx = new SymbolContext(exe_ctx->frame->GetSymbolContext(lldb::eSymbolContextEverything));
+ else
+ m_sym_ctx = NULL;
+}
+
+ClangExpressionDeclMap::~ClangExpressionDeclMap()
+{
+ uint32_t num_tuples = m_tuples.size ();
+ uint32_t tuple_index;
+
+ for (tuple_index = 0; tuple_index < num_tuples; ++tuple_index)
+ delete m_tuples[tuple_index].m_value;
+
+ if (m_sym_ctx)
+ delete m_sym_ctx;
+}
+
+bool
+ClangExpressionDeclMap::GetIndexForDecl (uint32_t &index,
+ const clang::Decl *decl)
+{
+ uint32_t num_tuples = m_tuples.size ();
+ uint32_t tuple_index;
+
+ for (tuple_index = 0; tuple_index < num_tuples; ++tuple_index)
+ {
+ if (m_tuples[tuple_index].m_decl == decl)
+ {
+ index = tuple_index;
+ return true;
+ }
+ }
+
+ return false;
+}
+
+// Interface for DwarfExpression
+Value
+*ClangExpressionDeclMap::GetValueForIndex (uint32_t index)
+{
+ if (index >= m_tuples.size ())
+ return NULL;
+
+ return m_tuples[index].m_value;
+}
+
+// Interface for ClangASTSource
+void
+ClangExpressionDeclMap::GetDecls(NameSearchContext &context,
+ const char *name)
+{
+ DEBUG_PRINTF("Hunting for a definition for %s\n", name);
+
+ // Back out in all cases where we're not fully initialized
+ if (!m_exe_ctx || !m_exe_ctx->frame || !m_sym_ctx)
+ return;
+
+ Function *function = m_sym_ctx->function;
+ Block *block = m_sym_ctx->block;
+
+ if (!function || !block)
+ {
+ DEBUG_PRINTF("function = %p, block = %p\n", function, block);
+ return;
+ }
+
+ BlockList& blocks = function->GetBlocks(true);
+
+ lldb::user_id_t current_block_id = block->GetID();
+
+ ConstString name_cs(name);
+
+ for (current_block_id = block->GetID();
+ current_block_id != Block::InvalidID;
+ current_block_id = blocks.GetParent(current_block_id))
+ {
+ Block *current_block = blocks.GetBlockByID(current_block_id);
+
+ lldb::VariableListSP var_list = current_block->GetVariableList(false, true);
+
+ if (!var_list)
+ continue;
+
+ lldb::VariableSP var = var_list->FindVariable(name_cs);
+
+ if (!var)
+ continue;
+
+ AddOneVariable(context, var.get());
+ return;
+ }
+
+ {
+ CompileUnit *compile_unit = m_sym_ctx->comp_unit;
+
+ if (!compile_unit)
+ {
+ DEBUG_PRINTF("compile_unit = %p\n", compile_unit);
+ return;
+ }
+
+ lldb::VariableListSP var_list = compile_unit->GetVariableList(true);
+
+ if (!var_list)
+ return;
+
+ lldb::VariableSP var = var_list->FindVariable(name_cs);
+
+ if (!var)
+ return;
+
+ AddOneVariable(context, var.get());
+ return;
+ }
+}
+
+void
+ClangExpressionDeclMap::AddOneVariable(NameSearchContext &context,
+ Variable* var)
+{
+ Type *var_type = var->GetType();
+
+ if (!var_type)
+ {
+ DEBUG_PRINTF("Skipped a definition for %s because it has no type\n", name);
+ return;
+ }
+
+ void *var_opaque_type = var_type->GetOpaqueClangQualType();
+
+ if (!var_opaque_type)
+ {
+ DEBUG_PRINTF("Skipped a definition for %s because it has no Clang type\n", name);
+ return;
+ }
+
+ DWARFExpression &var_location_expr = var->LocationExpression();
+
+ TypeList *type_list = var_type->GetTypeList();
+
+ if (!type_list)
+ {
+ DEBUG_PRINTF("Skipped a definition for %s because the type has no associated type list\n", name);
+ return;
+ }
+
+ clang::ASTContext *exe_ast_ctx = type_list->GetClangASTContext().getASTContext();
+
+ if (!exe_ast_ctx)
+ {
+ DEBUG_PRINTF("There is no AST context for the current execution context\n");
+ return;
+ }
+
+ std::auto_ptr<Value> var_location(new Value);
+
+ Error err;
+
+ if (!var_location_expr.Evaluate(m_exe_ctx, exe_ast_ctx, NULL, *var_location.get(), &err))
+ {
+ DEBUG_PRINTF("Error evaluating the location of %s: %s\n", name, err.AsCString());
+ return;
+ }
+
+ void *copied_type = ClangASTContext::CopyType(context.GetASTContext(), type_list->GetClangASTContext().getASTContext(), var_opaque_type);
+
+ if (var_location.get()->GetContextType() == Value::eContextTypeInvalid)
+ var_location.get()->SetContext(Value::eContextTypeOpaqueClangQualType, copied_type);
+
+ if (var_location.get()->GetValueType() == Value::eValueTypeFileAddress)
+ {
+ SymbolContext var_sc;
+ var->CalculateSymbolContext(&var_sc);
+
+ if (!var_sc.module_sp)
+ return;
+
+ ObjectFile *object_file = var_sc.module_sp->GetObjectFile();
+
+ if (!object_file)
+ return;
+
+ Address so_addr(var_location->GetScalar().ULongLong(), object_file->GetSectionList());
+
+ lldb::addr_t load_addr = so_addr.GetLoadAddress(m_exe_ctx->process);
+
+ var_location->GetScalar() = load_addr;
+ var_location->SetValueType(Value::eValueTypeLoadAddress);
+ }
+
+ NamedDecl *var_decl = context.AddVarDecl(copied_type);
+
+ Tuple tuple;
+
+ tuple.m_decl = var_decl;
+ tuple.m_value = var_location.release();
+
+ m_tuples.push_back(tuple);
+
+ DEBUG_PRINTF("Found for a definition for %s\n", name);
+}
diff --git a/source/Expression/ClangExpressionVariable.cpp b/source/Expression/ClangExpressionVariable.cpp
new file mode 100644
index 0000000..40fee4b
--- /dev/null
+++ b/source/Expression/ClangExpressionVariable.cpp
@@ -0,0 +1,100 @@
+//===-- ClangExpressionVariable.cpp -----------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Expression/ClangExpressionVariable.h"
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+#include "clang/AST/ASTContext.h"
+
+using namespace lldb_private;
+using namespace clang;
+
+ClangExpressionVariableList::ClangExpressionVariableList() :
+ m_variables()
+{
+}
+
+ClangExpressionVariableList::~ClangExpressionVariableList()
+{
+ uint32_t num_variables = m_variables.size();
+ uint32_t var_index;
+
+ for (var_index = 0; var_index < num_variables; ++var_index)
+ delete m_variables[var_index].m_value;
+}
+
+Value *
+ValueForDecl(ASTContext &ast_context, const VarDecl *var_decl)
+{
+ Value *ret = new Value;
+
+ ret->SetContext(Value::eContextTypeOpaqueClangQualType,
+ var_decl->getType().getAsOpaquePtr());
+
+ uint64_t bit_width = ast_context.getTypeSize(var_decl->getType());
+
+ uint32_t byte_size = (bit_width + 7 ) / 8;
+
+ ret->ResizeData(byte_size);
+
+ return ret;
+}
+
+Value *
+ClangExpressionVariableList::GetVariableForVarDecl (ASTContext &ast_context, const VarDecl *var_decl, uint32_t& idx, bool can_create)
+{
+ uint32_t num_variables = m_variables.size();
+ uint32_t var_index;
+
+ for (var_index = 0; var_index < num_variables; ++var_index)
+ {
+ if (m_variables[var_index].m_var_decl == var_decl)
+ {
+ idx = var_index;
+ return m_variables[var_index].m_value;
+ }
+ }
+
+ if (!can_create)
+ return NULL;
+
+ idx = m_variables.size();
+
+ ClangExpressionVariable val;
+ val.m_var_decl = var_decl;
+ val.m_value = ValueForDecl(ast_context, var_decl);
+ m_variables.push_back(val);
+
+ return m_variables.back().m_value;
+}
+
+Value *
+ClangExpressionVariableList::GetVariableAtIndex (uint32_t idx)
+{
+ if (idx < m_variables.size())
+ return m_variables[idx].m_value;
+
+ return NULL;
+}
+
+uint32_t
+ClangExpressionVariableList::AppendValue (Value *value)
+{
+ uint32_t idx = m_variables.size();
+
+ ClangExpressionVariable val;
+ val.m_var_decl = NULL;
+ val.m_value = value;
+
+ m_variables.push_back(val);
+ return idx;
+}
diff --git a/source/Expression/ClangFunction.cpp b/source/Expression/ClangFunction.cpp
new file mode 100644
index 0000000..e8713d0
--- /dev/null
+++ b/source/Expression/ClangFunction.cpp
@@ -0,0 +1,671 @@
+//===-- ClangFunction.cpp ---------------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+#include "clang/Frontend/CodeGenAction.h"
+#include "llvm/ExecutionEngine/ExecutionEngine.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/RecordLayout.h"
+#include "llvm/ExecutionEngine/JIT.h"
+#include "llvm/Module.h"
+#include "clang/CodeGen/ModuleBuilder.h"
+#include "llvm/ADT/StringRef.h"
+
+// Project includes
+#include "lldb/Expression/ClangFunction.h"
+#include "lldb/Symbol/Type.h"
+#include "lldb/Core/DataExtractor.h"
+#include "lldb/Core/ValueObject.h"
+#include "lldb/Core/ValueObjectList.h"
+#include "lldb/Interpreter/CommandReturnObject.h"
+#include "lldb/Symbol/ClangASTContext.h"
+#include "lldb/Symbol/Function.h"
+#include "lldb/Target/ExecutionContext.h"
+#include "lldb/Target/Process.h"
+#include "lldb/Target/Thread.h"
+#include "lldb/Target/ThreadPlan.h"
+#include "lldb/Target/ThreadPlanCallFunction.h"
+#include "lldb/Core/Log.h"
+
+using namespace lldb_private;
+//----------------------------------------------------------------------
+// ClangFunction constructor
+//----------------------------------------------------------------------
+ClangFunction::ClangFunction(const char *target_triple, ClangASTContext *ast_context, void *return_qualtype, const Address& functionAddress, const ValueList &arg_value_list) :
+ ClangExpression (target_triple, NULL),
+ m_function_addr (functionAddress),
+ m_function_ptr (NULL),
+ m_arg_values (arg_value_list),
+ m_clang_ast_context (ast_context),
+ m_function_return_qual_type(return_qualtype),
+ m_wrapper_function_name ("__lldb_caller_function"),
+ m_wrapper_struct_name ("__lldb_caller_struct"),
+ m_return_offset(0),
+ m_compiled (false),
+ m_JITted (false)
+{
+}
+
+ClangFunction::ClangFunction(const char *target_triple, Function &function, ClangASTContext *ast_context, const ValueList &arg_value_list) :
+ ClangExpression (target_triple, NULL),
+ m_function_ptr (&function),
+ m_arg_values (arg_value_list),
+ m_clang_ast_context (ast_context),
+ m_function_return_qual_type (NULL),
+ m_wrapper_function_name ("__lldb_function_caller"),
+ m_wrapper_struct_name ("__lldb_caller_struct"),
+ m_return_offset(0),
+ m_compiled (false),
+ m_JITted (false)
+{
+ m_function_addr = m_function_ptr->GetAddressRange().GetBaseAddress();
+ m_function_return_qual_type = m_function_ptr->GetReturnType().GetOpaqueClangQualType();
+}
+
+//----------------------------------------------------------------------
+// Destructor
+//----------------------------------------------------------------------
+ClangFunction::~ClangFunction()
+{
+}
+
+unsigned
+ClangFunction::CompileFunction (Stream &errors)
+{
+ // FIXME: How does clang tell us there's no return value? We need to handle that case.
+ unsigned num_errors = 0;
+
+ if (!m_compiled)
+ {
+ std::string return_type_str = ClangASTContext::GetTypeName(m_function_return_qual_type);
+
+ // Cons up the function we're going to wrap our call in, then compile it...
+ // We declare the function "extern "C"" because the compiler might be in C++
+ // mode which would mangle the name and then we couldn't find it again...
+ std::string expression;
+ expression.append ("extern \"C\" void ");
+ expression.append (m_wrapper_function_name);
+ expression.append (" (void *input)\n{\n struct ");
+ expression.append (m_wrapper_struct_name);
+ expression.append (" \n {\n");
+ expression.append (" ");
+ expression.append (return_type_str);
+ expression.append (" (*fn_ptr) (");
+
+ // Get the number of arguments. If we have a function type and it is prototyped,
+ // trust that, otherwise use the values we were given.
+
+ // FIXME: This will need to be extended to handle Variadic functions. We'll need
+ // to pull the defined arguments out of the function, then add the types from the
+ // arguments list for the variable arguments.
+
+ size_t num_args = -1;
+ bool trust_function = false;
+ // GetArgumentCount returns -1 for an unprototyped function.
+ if (m_function_ptr)
+ {
+ num_args = m_function_ptr->GetArgumentCount();
+ if (num_args != -1)
+ trust_function = true;
+ }
+
+ if (num_args == -1)
+ num_args = m_arg_values.GetSize();
+
+ std::string args_buffer; // This one stores the definition of all the args in "struct caller".
+ std::string args_list_buffer; // This one stores the argument list called from the structure.
+ for (int i = 0; i < num_args; i++)
+ {
+ const char *type_string;
+ std::string type_stdstr;
+
+ if (trust_function)
+ {
+ type_string = m_function_ptr->GetArgumentTypeAtIndex(i).GetName().AsCString();
+ }
+ else
+ {
+ Value *arg_value = m_arg_values.GetValueAtIndex(i);
+ void *clang_qual_type = arg_value->GetOpaqueClangQualType ();
+ if (clang_qual_type != NULL)
+ {
+ type_stdstr = ClangASTContext::GetTypeName(clang_qual_type);
+ type_string = type_stdstr.c_str();
+ }
+ else
+ {
+ errors.Printf("Could not determine type of input value %d.", i);
+ return 1;
+ }
+ }
+
+
+ expression.append (type_string);
+ if (i < num_args - 1)
+ expression.append (", ");
+
+ char arg_buf[32];
+ args_buffer.append (" ");
+ args_buffer.append (type_string);
+ snprintf(arg_buf, 31, "arg_%d", i);
+ args_buffer.push_back (' ');
+ args_buffer.append (arg_buf);
+ args_buffer.append (";\n");
+
+ args_list_buffer.append ("__lldb_fn_data->");
+ args_list_buffer.append (arg_buf);
+ if (i < num_args - 1)
+ args_list_buffer.append (", ");
+
+ }
+ expression.append (");\n"); // Close off the function calling prototype.
+
+ expression.append (args_buffer);
+
+ expression.append (" ");
+ expression.append (return_type_str);
+ expression.append (" return_value;");
+ expression.append ("\n };\n struct ");
+ expression.append (m_wrapper_struct_name);
+ expression.append ("* __lldb_fn_data = (struct ");
+ expression.append (m_wrapper_struct_name);
+ expression.append (" *) input;\n");
+
+ expression.append (" __lldb_fn_data->return_value = __lldb_fn_data->fn_ptr (");
+ expression.append (args_list_buffer);
+ expression.append (");\n}\n");
+
+ Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP);
+ if (log)
+ log->Printf ("Expression: \n\n%s\n\n", expression.c_str());
+
+ // Okay, now compile this expression:
+ num_errors = ParseBareExpression (expression.c_str(), errors);
+ m_compiled = (num_errors == 0);
+
+ if (m_compiled)
+ {
+ using namespace clang;
+ CompilerInstance *compiler_instance = GetCompilerInstance();
+ ASTContext &ast_context = compiler_instance->getASTContext();
+
+ DeclarationName wrapper_func_name(&ast_context.Idents.get(m_wrapper_function_name.c_str()));
+ FunctionDecl::lookup_result func_lookup = ast_context.getTranslationUnitDecl()->lookup(wrapper_func_name);
+ if (func_lookup.first == func_lookup.second)
+ return false;
+
+ FunctionDecl *wrapper_func = dyn_cast<FunctionDecl> (*(func_lookup.first));
+ if (!wrapper_func)
+ return false;
+
+ DeclarationName wrapper_struct_name(&ast_context.Idents.get(m_wrapper_struct_name.c_str()));
+ RecordDecl::lookup_result struct_lookup = wrapper_func->lookup(wrapper_struct_name);
+ if (struct_lookup.first == struct_lookup.second)
+ return false;
+
+ RecordDecl *wrapper_struct = dyn_cast<RecordDecl>(*(struct_lookup.first));
+
+ if (!wrapper_struct)
+ return false;
+
+ m_struct_layout = &ast_context.getASTRecordLayout (wrapper_struct);
+ if (!m_struct_layout)
+ {
+ m_compiled = false;
+ return 1;
+ }
+ m_return_offset = m_struct_layout->getFieldOffset(m_struct_layout->getFieldCount() - 1);
+ m_return_size = (m_struct_layout->getDataSize() - m_return_offset)/8;
+ }
+ }
+
+ return num_errors;
+}
+
+bool
+ClangFunction::WriteFunctionWrapper (ExecutionContext &exc_context, Stream &errors)
+{
+ Process *process = exc_context.process;
+
+ if (process == NULL)
+ return false;
+
+ if (!m_JITted)
+ {
+ // Next we should JIT it and insert the result into the target program.
+ if (!JITFunction (exc_context, m_wrapper_function_name.c_str()))
+ return false;
+
+ if (!WriteJITCode (exc_context))
+ return false;
+
+ m_JITted = true;
+ }
+
+ // Next get the call address for the function:
+ m_wrapper_fun_addr = GetFunctionAddress (m_wrapper_function_name.c_str());
+ if (m_wrapper_fun_addr == LLDB_INVALID_ADDRESS)
+ return false;
+
+ return true;
+}
+
+bool
+ClangFunction::WriteFunctionArguments (ExecutionContext &exc_context, lldb::addr_t &args_addr_ref, Stream &errors)
+{
+ return WriteFunctionArguments(exc_context, args_addr_ref, m_function_addr, m_arg_values, errors);
+}
+
+// FIXME: Assure that the ValueList we were passed in is consistent with the one that defined this function.
+
+bool
+ClangFunction::WriteFunctionArguments (ExecutionContext &exc_context, lldb::addr_t &args_addr_ref, Address function_address, ValueList &arg_values, Stream &errors)
+{
+ // Otherwise, allocate space for the argument passing struct, and write it.
+ // We use the information in the expression parser AST to
+ // figure out how to do this...
+ // We should probably transcode this in this object so we can ditch the compiler instance
+ // and all its associated data, and just keep the JITTed bytes.
+
+ Error error;
+ using namespace clang;
+ ExecutionResults return_value = eExecutionSetupError;
+
+ Process *process = exc_context.process;
+
+ if (process == NULL)
+ return return_value;
+
+ uint64_t struct_size = m_struct_layout->getSize()/8; // Clang returns sizes in bytes.
+
+ if (args_addr_ref == LLDB_INVALID_ADDRESS)
+ {
+ args_addr_ref = process->AllocateMemory(struct_size, lldb::ePermissionsReadable|lldb::ePermissionsWritable, error);
+ if (args_addr_ref == LLDB_INVALID_ADDRESS)
+ return false;
+ m_wrapper_args_addrs.push_back (args_addr_ref);
+ }
+ else
+ {
+ // Make sure this is an address that we've already handed out.
+ if (find (m_wrapper_args_addrs.begin(), m_wrapper_args_addrs.end(), args_addr_ref) == m_wrapper_args_addrs.end())
+ {
+ return false;
+ }
+ }
+
+ // FIXME: This is fake, and just assumes that it matches that architecture.
+ // Make a data extractor and put the address into the right byte order & size.
+
+ uint64_t fun_addr = function_address.GetLoadAddress(exc_context.process);
+ int first_offset = m_struct_layout->getFieldOffset(0)/8;
+ process->WriteMemory(args_addr_ref + first_offset, &fun_addr, 8, error);
+
+ // FIXME: We will need to extend this for Variadic functions.
+
+ Error value_error;
+
+ size_t num_args = arg_values.GetSize();
+ if (num_args != m_arg_values.GetSize())
+ {
+ errors.Printf ("Wrong number of arguments - was: %d should be: %d", num_args, m_arg_values.GetSize());
+ return false;
+ }
+
+ for (int i = 0; i < num_args; i++)
+ {
+ // FIXME: We should sanity check sizes.
+
+ int offset = m_struct_layout->getFieldOffset(i+1)/8; // Clang sizes are in bytes.
+ Value *arg_value = arg_values.GetValueAtIndex(i);
+
+ // FIXME: For now just do scalars:
+
+ // Special case: if it's a pointer, don't do anything (the ABI supports passing cstrings)
+
+ if (arg_value->GetValueType() == Value::eValueTypeHostAddress &&
+ arg_value->GetContextType() == Value::eContextTypeOpaqueClangQualType &&
+ ClangASTContext::IsPointerType(arg_value->GetValueOpaqueClangQualType()))
+ continue;
+
+ const Scalar &arg_scalar = arg_value->ResolveValue(&exc_context, m_clang_ast_context->getASTContext());
+
+ int byte_size = arg_scalar.GetByteSize();
+ std::vector<uint8_t> buffer;
+ buffer.resize(byte_size);
+ DataExtractor value_data;
+ arg_scalar.GetData (value_data);
+ value_data.ExtractBytes(0, byte_size, process->GetByteOrder(), buffer.data());
+ process->WriteMemory(args_addr_ref + offset, buffer.data(), byte_size, error);
+ }
+
+ return true;
+}
+
+bool
+ClangFunction::InsertFunction (ExecutionContext &exc_context, lldb::addr_t &args_addr_ref, Stream &errors)
+{
+ using namespace clang;
+
+ if (CompileFunction(errors) != 0)
+ return false;
+ if (!WriteFunctionWrapper(exc_context, errors))
+ return false;
+ if (!WriteFunctionArguments(exc_context, args_addr_ref, errors))
+ return false;
+
+ Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP);
+ if (log)
+ log->Printf ("Call Address: 0x%llx Struct Address: 0x%llx.\n", m_wrapper_fun_addr, args_addr_ref);
+
+ return true;
+}
+
+ThreadPlan *
+ClangFunction::GetThreadPlanToCallFunction (ExecutionContext &exc_context, lldb::addr_t &args_addr, Stream &errors, bool stop_others, bool discard_on_error)
+{
+ // FIXME: Use the errors Stream for better error reporting.
+
+ Process *process = exc_context.process;
+
+ if (process == NULL)
+ {
+ errors.Printf("Can't call a function without a process.");
+ return NULL;
+ }
+
+ // Okay, now run the function:
+
+ Address wrapper_address (NULL, m_wrapper_fun_addr);
+ ThreadPlan *new_plan = new ThreadPlanCallFunction (*exc_context.thread,
+ wrapper_address,
+ args_addr,
+ stop_others, discard_on_error);
+ return new_plan;
+}
+
+bool
+ClangFunction::FetchFunctionResults (ExecutionContext &exc_context, lldb::addr_t args_addr, Value &ret_value)
+{
+ // Read the return value - it is the last field in the struct:
+ // FIXME: How does clang tell us there's no return value? We need to handle that case.
+
+ std::vector<uint8_t> data_buffer;
+ data_buffer.resize(m_return_size);
+ Process *process = exc_context.process;
+ Error error;
+ size_t bytes_read = process->ReadMemory(args_addr + m_return_offset/8, data_buffer.data(), m_return_size, error);
+
+ if (bytes_read == 0)
+ {
+ return false;
+ }
+
+ if (bytes_read < m_return_size)
+ return false;
+
+ DataExtractor data(data_buffer.data(), m_return_size, process->GetByteOrder(), process->GetAddressByteSize());
+ // FIXME: Assuming an integer scalar for now:
+
+ uint32_t offset = 0;
+ uint64_t return_integer = data.GetMaxU64(&offset, m_return_size);
+
+ ret_value.SetContext (Value::eContextTypeOpaqueClangQualType, m_function_return_qual_type);
+ ret_value.SetValueType(Value::eValueTypeScalar);
+ ret_value.GetScalar() = return_integer;
+ return true;
+}
+
+void
+ClangFunction::DeallocateFunctionResults (ExecutionContext &exc_context, lldb::addr_t args_addr)
+{
+ std::list<lldb::addr_t>::iterator pos;
+ pos = std::find(m_wrapper_args_addrs.begin(), m_wrapper_args_addrs.end(), args_addr);
+ if (pos != m_wrapper_args_addrs.end())
+ m_wrapper_args_addrs.erase(pos);
+
+ exc_context.process->DeallocateMemory(args_addr);
+}
+
+ClangFunction::ExecutionResults
+ClangFunction::ExecuteFunction(ExecutionContext &exc_context, Stream &errors, Value &results)
+{
+ return ExecuteFunction (exc_context, errors, 1000, true, results);
+}
+
+ClangFunction::ExecutionResults
+ClangFunction::ExecuteFunction(ExecutionContext &exc_context, Stream &errors, bool stop_others, Value &results)
+{
+ return ExecuteFunction (exc_context, NULL, errors, stop_others, NULL, false, results);
+}
+
+ClangFunction::ExecutionResults
+ClangFunction::ExecuteFunction(
+ ExecutionContext &exc_context,
+ Stream &errors,
+ uint32_t single_thread_timeout_usec,
+ bool try_all_threads,
+ Value &results)
+{
+ return ExecuteFunction (exc_context, NULL, errors, true, single_thread_timeout_usec, try_all_threads, results);
+}
+
+ClangFunction::ExecutionResults
+ClangFunction::ExecuteFunction(
+ ExecutionContext &exc_context,
+ lldb::addr_t *args_addr_ptr,
+ Stream &errors,
+ bool stop_others,
+ uint32_t single_thread_timeout_usec,
+ bool try_all_threads,
+ Value &results)
+{
+ using namespace clang;
+ ExecutionResults return_value = eExecutionSetupError;
+ Process *process = exc_context.process;
+
+ lldb::addr_t args_addr;
+
+ if (args_addr_ptr != NULL)
+ args_addr = *args_addr_ptr;
+ else
+ args_addr = LLDB_INVALID_ADDRESS;
+
+ if (CompileFunction(errors) != 0)
+ return eExecutionSetupError;
+
+ if (args_addr == LLDB_INVALID_ADDRESS)
+ {
+ if (!InsertFunction(exc_context, args_addr, errors))
+ return eExecutionSetupError;
+ }
+
+
+ lldb::ThreadPlanSP call_plan_sp(GetThreadPlanToCallFunction(exc_context, args_addr, errors, stop_others, false));
+
+ ThreadPlanCallFunction *call_plan_ptr = static_cast<ThreadPlanCallFunction *> (call_plan_sp.get());
+
+ if (args_addr_ptr != NULL)
+ *args_addr_ptr = args_addr;
+
+ if (call_plan_sp == NULL)
+ return return_value;
+
+ call_plan_sp->SetPrivate(true);
+ exc_context.thread->QueueThreadPlan(call_plan_sp, true);
+
+ // We need to call the function synchronously, so spin waiting for it to return.
+ // If we get interrupted while executing, we're going to lose our context, and
+ // won't be able to gather the result at this point.
+
+ TimeValue* timeout_ptr = NULL;
+ TimeValue real_timeout;
+ if (single_thread_timeout_usec != 0)
+ {
+ real_timeout = TimeValue::Now();
+ real_timeout.OffsetWithMicroSeconds(single_thread_timeout_usec);
+ timeout_ptr = &real_timeout;
+ }
+ process->Resume ();
+
+
+ while (1)
+ {
+ lldb::EventSP event_sp;
+
+ // Now wait for the process to stop again:
+ // FIXME: Probably want a time out.
+ lldb::StateType stop_state = process->WaitForStateChangedEvents (timeout_ptr, event_sp);
+ if (stop_state == lldb::eStateInvalid && timeout_ptr != NULL)
+ {
+ // Right now this is the only way to tell we've timed out...
+ // We should interrupt the process here...
+ // Not really sure what to do if Halt fails here...
+ Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP);
+ if (log)
+ log->Printf ("Running function with timeout: %d timed out, trying with all threads enabled.", single_thread_timeout_usec);
+
+ if (process->Halt().Success())
+ {
+ timeout_ptr = NULL;
+
+ lldb::StateType stop_state = process->WaitForStateChangedEvents (timeout_ptr, event_sp);
+ if (stop_state == lldb::eStateInvalid)
+ {
+ errors.Printf ("Got an invalid stop state after halt.");
+ }
+ else if (stop_state != lldb::eStateStopped)
+ {
+ StreamString s;
+ event_sp->Dump (&s);
+
+ errors.Printf("Didn't get a stopped event after Halting the target, got: \"%s\"", s.GetData());
+ }
+
+ if (try_all_threads)
+ {
+ // Between the time that we got the timeout and the time we halted, but target
+ // might have actually completed the plan. If so, we're done.
+ if (exc_context.thread->IsThreadPlanDone (call_plan_sp.get()))
+ {
+ return_value = eExecutionCompleted;
+ break;
+ }
+
+
+ call_plan_ptr->SetStopOthers (false);
+ process->Resume();
+ continue;
+ }
+ else
+ return eExecutionInterrupted;
+ }
+ }
+ if (stop_state == lldb::eStateRunning || stop_state == lldb::eStateStepping)
+ continue;
+
+ if (exc_context.thread->IsThreadPlanDone (call_plan_sp.get()))
+ {
+ return_value = eExecutionCompleted;
+ break;
+ }
+ else if (exc_context.thread->WasThreadPlanDiscarded (call_plan_sp.get()))
+ {
+ return_value = eExecutionDiscarded;
+ break;
+ }
+ else
+ {
+ return_value = eExecutionInterrupted;
+ break;
+ }
+
+ }
+
+ if (return_value != eExecutionCompleted)
+ return return_value;
+
+ FetchFunctionResults(exc_context, args_addr, results);
+
+ if (args_addr_ptr == NULL)
+ DeallocateFunctionResults(exc_context, args_addr);
+
+ return eExecutionCompleted;
+}
+
+ClangFunction::ExecutionResults
+ClangFunction::ExecuteFunctionWithABI(ExecutionContext &exc_context, Stream &errors, Value &results)
+{
+ // FIXME: Use the errors Stream for better error reporting.
+ using namespace clang;
+ ExecutionResults return_value = eExecutionSetupError;
+
+ Process *process = exc_context.process;
+
+ if (process == NULL)
+ {
+ errors.Printf("Can't call a function without a process.");
+ return return_value;
+ }
+
+ //unsigned int num_args = m_arg_values.GetSize();
+ //unsigned int arg_index;
+
+ //for (arg_index = 0; arg_index < num_args; ++arg_index)
+ // m_arg_values.GetValueAtIndex(arg_index)->ResolveValue(&exc_context, GetASTContext());
+
+ ThreadPlan *call_plan = exc_context.thread->QueueThreadPlanForCallFunction (false,
+ m_function_addr,
+ m_arg_values,
+ true);
+ if (call_plan == NULL)
+ return return_value;
+
+ call_plan->SetPrivate(true);
+
+ // We need to call the function synchronously, so spin waiting for it to return.
+ // If we get interrupted while executing, we're going to lose our context, and
+ // won't be able to gather the result at this point.
+
+ process->Resume ();
+
+ while (1)
+ {
+ lldb::EventSP event_sp;
+
+ // Now wait for the process to stop again:
+ // FIXME: Probably want a time out.
+ lldb::StateType stop_state = process->WaitForStateChangedEvents (NULL, event_sp);
+ if (stop_state == lldb::eStateRunning || stop_state == lldb::eStateStepping)
+ continue;
+
+ if (exc_context.thread->IsThreadPlanDone (call_plan))
+ {
+ return_value = eExecutionCompleted;
+ break;
+ }
+ else if (exc_context.thread->WasThreadPlanDiscarded (call_plan))
+ {
+ return_value = eExecutionDiscarded;
+ break;
+ }
+ else
+ {
+ return_value = eExecutionInterrupted;
+ break;
+ }
+
+ }
+
+ return eExecutionCompleted;
+}
diff --git a/source/Expression/ClangStmtVisitor.cpp b/source/Expression/ClangStmtVisitor.cpp
new file mode 100644
index 0000000..1d2f53f
--- /dev/null
+++ b/source/Expression/ClangStmtVisitor.cpp
@@ -0,0 +1,1032 @@
+//===-- ClangStmtVisitor.cpp ------------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Expression/ClangStmtVisitor.h"
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+#include "clang/AST/RecordLayout.h"
+
+#define NO_RTTI
+#include "lldb/Core/dwarf.h"
+#include "lldb/Core/Scalar.h"
+#include "lldb/Core/StreamString.h"
+#include "lldb/Expression/ClangExpressionDeclMap.h"
+#include "lldb/Expression/ClangExpressionVariable.h"
+
+//#define ENABLE_DEBUG_PRINTF // COMMENT THIS LINE OUT PRIOR TO CHECKIN
+#ifdef ENABLE_DEBUG_PRINTF
+#include <stdio.h>
+#define DEBUG_PRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__)
+#else
+#define DEBUG_PRINTF(fmt, ...)
+#endif
+
+// Project includes
+
+static lldb_private::Scalar::Type
+GetScalarTypeForClangType (clang::ASTContext &ast_context, clang::QualType clang_type, uint32_t &count)
+{
+ count = 1;
+
+ switch (clang_type->getTypeClass())
+ {
+ case clang::Type::FunctionNoProto:
+ case clang::Type::FunctionProto:
+ break;
+
+ case clang::Type::IncompleteArray:
+ case clang::Type::VariableArray:
+ break;
+
+ case clang::Type::ConstantArray:
+ break;
+
+ case clang::Type::ExtVector:
+ case clang::Type::Vector:
+ // TODO: Set this to more than one???
+ break;
+
+ case clang::Type::Builtin:
+ switch (cast<clang::BuiltinType>(clang_type)->getKind())
+ {
+ default: assert(0 && "Unknown builtin type!");
+ case clang::BuiltinType::Void:
+ break;
+
+ case clang::BuiltinType::Bool:
+ case clang::BuiltinType::Char_S:
+ case clang::BuiltinType::SChar:
+ case clang::BuiltinType::WChar:
+ case clang::BuiltinType::Char16:
+ case clang::BuiltinType::Char32:
+ case clang::BuiltinType::Short:
+ case clang::BuiltinType::Int:
+ case clang::BuiltinType::Long:
+ case clang::BuiltinType::LongLong:
+ case clang::BuiltinType::Int128:
+ return lldb_private::Scalar::GetValueTypeForSignedIntegerWithByteSize ((ast_context.getTypeSize(clang_type)/CHAR_BIT)/count);
+
+ case clang::BuiltinType::Char_U:
+ case clang::BuiltinType::UChar:
+ case clang::BuiltinType::UShort:
+ case clang::BuiltinType::UInt:
+ case clang::BuiltinType::ULong:
+ case clang::BuiltinType::ULongLong:
+ case clang::BuiltinType::UInt128:
+ case clang::BuiltinType::NullPtr:
+ return lldb_private::Scalar::GetValueTypeForUnsignedIntegerWithByteSize ((ast_context.getTypeSize(clang_type)/CHAR_BIT)/count);
+
+ case clang::BuiltinType::Float:
+ case clang::BuiltinType::Double:
+ case clang::BuiltinType::LongDouble:
+ return lldb_private::Scalar::GetValueTypeForFloatWithByteSize ((ast_context.getTypeSize(clang_type)/CHAR_BIT)/count);
+ }
+ break;
+ // All pointer types are represented as unsigned integer encodings.
+ // We may nee to add a eEncodingPointer if we ever need to know the
+ // difference
+ case clang::Type::ObjCObjectPointer:
+ case clang::Type::BlockPointer:
+ case clang::Type::Pointer:
+ case clang::Type::LValueReference:
+ case clang::Type::RValueReference:
+ case clang::Type::MemberPointer:
+ return lldb_private::Scalar::GetValueTypeForUnsignedIntegerWithByteSize ((ast_context.getTypeSize(clang_type)/CHAR_BIT)/count);
+
+ // Complex numbers are made up of floats
+ case clang::Type::Complex:
+ count = 2;
+ return lldb_private::Scalar::GetValueTypeForFloatWithByteSize ((ast_context.getTypeSize(clang_type)/CHAR_BIT) / count);
+
+ case clang::Type::ObjCInterface: break;
+ case clang::Type::Record: break;
+ case clang::Type::Enum:
+ return lldb_private::Scalar::GetValueTypeForSignedIntegerWithByteSize ((ast_context.getTypeSize(clang_type)/CHAR_BIT)/count);
+
+ case clang::Type::Typedef:
+ return GetScalarTypeForClangType(ast_context, cast<clang::TypedefType>(clang_type)->LookThroughTypedefs(), count);
+ break;
+
+ case clang::Type::TypeOfExpr:
+ case clang::Type::TypeOf:
+ case clang::Type::Decltype:
+ //case clang::Type::QualifiedName:
+ case clang::Type::TemplateSpecialization: break;
+ }
+ count = 0;
+ return lldb_private::Scalar::e_void;
+}
+
+//----------------------------------------------------------------------
+// ClangStmtVisitor constructor
+//----------------------------------------------------------------------
+lldb_private::ClangStmtVisitor::ClangStmtVisitor
+(
+ clang::ASTContext &ast_context,
+ lldb_private::ClangExpressionVariableList &variable_list,
+ lldb_private::ClangExpressionDeclMap *decl_map,
+ lldb_private::StreamString &strm
+) :
+ m_ast_context (ast_context),
+ m_variable_list (variable_list),
+ m_decl_map (decl_map),
+ m_stream (strm)
+{
+}
+
+//----------------------------------------------------------------------
+// Destructor
+//----------------------------------------------------------------------
+lldb_private::ClangStmtVisitor::~ClangStmtVisitor()
+{
+}
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitStmt (clang::Stmt *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+
+ clang::Stmt::child_iterator pos;
+ clang::Stmt::child_iterator begin = Node->child_begin();
+ clang::Stmt::child_iterator end = Node->child_end();
+ bool clear_before_next_stmt = false;
+ for (pos = begin; pos != end; ++pos)
+ {
+#ifdef ENABLE_DEBUG_PRINTF
+ pos->dump();
+#endif
+ clang::Stmt *child_stmt = *pos;
+ uint32_t pre_visit_stream_offset = m_stream.GetSize();
+ bool not_null_stmt = dyn_cast<clang::NullStmt>(child_stmt) == NULL;
+ if (clear_before_next_stmt && not_null_stmt)
+ m_stream.PutHex8(DW_OP_APPLE_clear);
+ Visit (child_stmt);
+ if (not_null_stmt)
+ clear_before_next_stmt = pre_visit_stream_offset != m_stream.GetSize();
+ }
+}
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitDeclStmt (clang::DeclStmt *decl_stmt)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+ clang::DeclGroupRef decl_group_ref = decl_stmt->getDeclGroup();
+ clang::DeclGroupRef::iterator pos, end = decl_group_ref.end();
+ for (pos = decl_group_ref.begin(); pos != end; ++pos)
+ {
+ clang::Decl *decl = *pos;
+ if (decl)
+ {
+ clang::Decl::Kind decl_kind = decl->getKind();
+
+ switch (decl_kind)
+ {
+ case clang::Decl::Namespace:
+ case clang::Decl::Enum:
+ case clang::Decl::Record:
+ case clang::Decl::CXXRecord:
+ case clang::Decl::ObjCMethod:
+ case clang::Decl::ObjCInterface:
+ case clang::Decl::ObjCCategory:
+ case clang::Decl::ObjCProtocol:
+ case clang::Decl::ObjCImplementation:
+ case clang::Decl::ObjCCategoryImpl:
+ case clang::Decl::LinkageSpec:
+ case clang::Decl::Block:
+ case clang::Decl::Function:
+ case clang::Decl::CXXMethod:
+ case clang::Decl::CXXConstructor:
+ case clang::Decl::CXXDestructor:
+ case clang::Decl::CXXConversion:
+ case clang::Decl::Field:
+ case clang::Decl::Typedef:
+ case clang::Decl::EnumConstant:
+ case clang::Decl::ImplicitParam:
+ case clang::Decl::ParmVar:
+ case clang::Decl::ObjCProperty:
+ break;
+
+ case clang::Decl::Var:
+ {
+ const clang::VarDecl *var_decl = cast<clang::VarDecl>(decl)->getCanonicalDecl();
+ uint32_t expr_local_var_idx = UINT32_MAX;
+ if (m_variable_list.GetVariableForVarDecl (m_ast_context, var_decl, expr_local_var_idx, true))
+ {
+ const clang::Expr* var_decl_expr = var_decl->getAnyInitializer();
+ // If there is an inialization expression, then assign the
+ // variable.
+ if (var_decl_expr)
+ {
+ m_stream.PutHex8(DW_OP_APPLE_expr_local);
+ m_stream.PutULEB128(expr_local_var_idx);
+ Visit ((clang::Stmt *)var_decl_expr);
+ m_stream.PutHex8(DW_OP_APPLE_assign);
+ }
+ }
+ }
+ break;
+
+ default:
+ assert(!"decl unhandled");
+ break;
+ }
+ }
+ }
+}
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitLabelStmt (clang::LabelStmt *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitGotoStmt (clang::GotoStmt *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+// Exprs
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitExpr (clang::Expr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitDeclRefExpr (clang::DeclRefExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+ clang::NamedDecl *decl = Node->getDecl();
+ clang::QualType clang_type = Node->getType();
+
+#ifdef ENABLE_DEBUG_PRINTF
+ //decl->dump();
+ //clang_type.dump("lldb_private::ClangStmtVisitor::VisitDeclRefExpr() -> clang_type.dump() = ");
+#endif
+ uint32_t expr_local_var_idx = UINT32_MAX;
+ if (m_variable_list.GetVariableForVarDecl (m_ast_context, cast<clang::VarDecl>(decl)->getCanonicalDecl(), expr_local_var_idx, false) &&
+ expr_local_var_idx != UINT32_MAX)
+ {
+ m_stream.PutHex8(DW_OP_APPLE_expr_local);
+ m_stream.PutULEB128(expr_local_var_idx);
+ }
+ else if (m_decl_map &&
+ m_decl_map->GetIndexForDecl(expr_local_var_idx, decl->getCanonicalDecl()))
+ {
+ m_stream.PutHex8(DW_OP_APPLE_extern);
+ m_stream.PutULEB128(expr_local_var_idx);
+ }
+ else
+ {
+ m_stream.PutHex8 (DW_OP_APPLE_error);
+ }
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitPredefinedExpr (clang::PredefinedExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitCharacterLiteral (clang::CharacterLiteral *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+ clang::QualType clang_type = Node->getType();
+ uint64_t clang_type_size = m_ast_context.getTypeSize (clang_type);
+ if (clang_type_size <= 64)
+ {
+ // Encode the integer into our DWARF expression
+ if (clang_type->isSignedIntegerType())
+ EncodeSInt64(Node->getValue(), clang_type_size);
+ else
+ EncodeUInt64(Node->getValue(), clang_type_size);
+ }
+ else
+ {
+ // TODO: eventually support integer math over 64 bits, probably using
+ // APInt as the class.
+ m_stream.PutHex8(DW_OP_APPLE_error);
+ }
+}
+
+bool
+lldb_private::ClangStmtVisitor::EncodeUInt64 (uint64_t uval, uint32_t bit_size)
+{
+ // If "bit_size" is zero, then encode "uval" in the most efficient way
+ if (bit_size <= 8 || (bit_size == 0 && uval <= UINT8_MAX))
+ {
+ m_stream.PutHex8 (DW_OP_const1u);
+ m_stream.PutHex8 (uval);
+ }
+ else if (bit_size <= 16 || (bit_size == 0 && uval <= UINT16_MAX))
+ {
+ m_stream.PutHex8 (DW_OP_const2u);
+ m_stream.PutHex16 (uval);
+ }
+ else if (bit_size <= 32 || (bit_size == 0 && uval <= UINT32_MAX))
+ {
+ m_stream.PutHex8 (DW_OP_const4u);
+ m_stream.PutHex32 (uval);
+ }
+ else if (bit_size <= 64 || (bit_size == 0))
+ {
+ m_stream.PutHex8 (DW_OP_const8u);
+ m_stream.PutHex64 (uval);
+ }
+ else
+ {
+ m_stream.PutHex8 (DW_OP_APPLE_error);
+ return false;
+ }
+ return true;
+}
+
+bool
+lldb_private::ClangStmtVisitor::EncodeSInt64 (int64_t sval, uint32_t bit_size)
+{
+ if (bit_size <= 8 || (bit_size == 0 && INT8_MIN <= sval && sval <= INT8_MAX))
+ {
+ m_stream.PutHex8 (DW_OP_const1s);
+ m_stream.PutHex8 (sval);
+ }
+ else if (bit_size <= 16 || (bit_size == 0 && INT16_MIN <= sval && sval <= INT16_MAX))
+ {
+ m_stream.PutHex8 (DW_OP_const2s);
+ m_stream.PutHex16 (sval);
+ }
+ else if (bit_size <= 32 || (bit_size == 0 && INT32_MIN <= sval && sval <= INT32_MAX))
+ {
+ m_stream.PutHex8 (DW_OP_const4s);
+ m_stream.PutHex32 (sval);
+ }
+ else if (bit_size <= 64 || (bit_size == 0))
+ {
+ m_stream.PutHex8 (DW_OP_const8s);
+ m_stream.PutHex64 (sval);
+ }
+ else
+ {
+ m_stream.PutHex8 (DW_OP_APPLE_error);
+ return false;
+ }
+ return true;
+}
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitIntegerLiteral (clang::IntegerLiteral *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+ const llvm::APInt &ap_int = Node->getValue();
+ if (ap_int.getBitWidth() <= 64)
+ {
+ clang::QualType clang_type = Node->getType();
+ uint64_t clang_type_size = m_ast_context.getTypeSize (clang_type);
+ // Encode the integer into our DWARF expression
+ if (clang_type->isSignedIntegerType())
+ EncodeSInt64(ap_int.getLimitedValue(), clang_type_size);
+ else
+ EncodeUInt64(ap_int.getLimitedValue(), clang_type_size);
+ }
+ else
+ {
+ // TODO: eventually support integer math over 64 bits, probably using
+ // APInt as the class.
+ m_stream.PutHex8(DW_OP_APPLE_error);
+ }
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitFloatingLiteral (clang::FloatingLiteral *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+ const llvm::APFloat &ap_float = Node->getValue();
+ // Put the length of the float in bytes into a single byte
+ llvm::APInt ap_int(ap_float.bitcastToAPInt());
+ const unsigned byte_size = ap_int.getBitWidth() / CHAR_BIT;
+ if (byte_size == sizeof(float))
+ {
+ if (sizeof(float) == 4)
+ {
+ m_stream.PutHex8(DW_OP_APPLE_constf);
+ m_stream.PutHex8 (byte_size);
+ m_stream.PutHex32 (ap_int.getLimitedValue());
+ return;
+ }
+ else if (sizeof(float) == 8)
+ {
+ m_stream.PutHex8(DW_OP_APPLE_constf);
+ m_stream.PutHex8 (byte_size);
+ m_stream.PutHex64 (ap_int.getLimitedValue());
+ return;
+ }
+ }
+ else if (byte_size == sizeof(double))
+ {
+ if (sizeof(double) == 4)
+ {
+ m_stream.PutHex8(DW_OP_APPLE_constf);
+ m_stream.PutHex8 (byte_size);
+ m_stream.PutHex32 (ap_int.getLimitedValue());
+ return;
+ }
+ else if (sizeof(double) == 8)
+ {
+ m_stream.PutHex8(DW_OP_APPLE_constf);
+ m_stream.PutHex8 (byte_size);
+ m_stream.PutHex64 (ap_int.getLimitedValue());
+ return;
+ }
+ }
+ else if (byte_size == sizeof(long double))
+ {
+ if (sizeof(long double) == 8)
+ {
+ m_stream.PutHex8(DW_OP_APPLE_constf);
+ m_stream.PutHex8 (byte_size);
+ m_stream.PutHex64 (ap_int.getLimitedValue());
+ return;
+ }
+ }
+ // TODO: eventually support float constants of all sizes using
+ // APFloat as the class.
+ m_stream.PutHex8(DW_OP_APPLE_error);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitStringLiteral (clang::StringLiteral *Str)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+
+ size_t byte_length = Str->getByteLength();
+ bool is_wide = Str->isWide();
+
+ size_t new_length = byte_length + (is_wide ? 1 : 2);
+
+ uint8_t null_terminated_string[new_length];
+
+ memcpy(&null_terminated_string[0], Str->getStrData(), byte_length);
+
+ if(is_wide)
+ {
+ null_terminated_string[byte_length] = '\0';
+ null_terminated_string[byte_length + 1] = '\0';
+ }
+ else
+ {
+ null_terminated_string[byte_length] = '\0';
+ }
+
+ Value *val = new Value(null_terminated_string, new_length);
+ val->SetContext(Value::eContextTypeOpaqueClangQualType, Str->getType().getAsOpaquePtr());
+
+ uint32_t val_idx = m_variable_list.AppendValue(val);
+
+ m_stream.PutHex8(DW_OP_APPLE_expr_local);
+ m_stream.PutULEB128(val_idx);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitUnaryOperator (clang::UnaryOperator *unary_op)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+
+ Visit(unary_op->getSubExpr());
+
+ switch (unary_op->getOpcode())
+ {
+ case clang::UnaryOperator::PostInc:
+ // Duplciate the top of stack value (which must be something that can
+ // be assignable/incremented) and push its current value
+ m_stream.PutHex8 (DW_OP_dup); // x, x
+ m_stream.PutHex8 (DW_OP_APPLE_value_of); // x, val(x)
+ m_stream.PutHex8 (DW_OP_swap); // val(x), x
+ m_stream.PutHex8 (DW_OP_dup); // val(x), x, x
+ m_stream.PutHex8 (DW_OP_lit1); // val(x), x, x, 1
+ m_stream.PutHex8 (DW_OP_plus); // val(x), x, val(x)+1
+ m_stream.PutHex8 (DW_OP_APPLE_assign); // val(x), x
+ m_stream.PutHex8 (DW_OP_drop); // val(x)
+ break;
+
+ case clang::UnaryOperator::PostDec:
+ // Duplciate the top of stack value (which must be something that can
+ // be assignable/incremented) and push its current value
+ m_stream.PutHex8 (DW_OP_dup); // x, x
+ m_stream.PutHex8 (DW_OP_APPLE_value_of); // x, val(x)
+ m_stream.PutHex8 (DW_OP_swap); // val(x), x
+ m_stream.PutHex8 (DW_OP_dup); // val(x), x, x
+ m_stream.PutHex8 (DW_OP_lit1); // val(x), x, x, 1
+ m_stream.PutHex8 (DW_OP_minus); // val(x), x, val(x)-1
+ m_stream.PutHex8 (DW_OP_APPLE_assign); // val(x), x
+ m_stream.PutHex8 (DW_OP_drop); // val(x)
+ break;
+
+ case clang::UnaryOperator::PreInc:
+ m_stream.PutHex8 (DW_OP_dup); // x, x
+ m_stream.PutHex8 (DW_OP_APPLE_value_of); // x, val(x)
+ m_stream.PutHex8 (DW_OP_lit1); // x, val(x), 1
+ m_stream.PutHex8 (DW_OP_plus); // x, val(x)+1
+ m_stream.PutHex8 (DW_OP_APPLE_assign); // x with new value
+ break;
+
+ case clang::UnaryOperator::PreDec:
+ m_stream.PutHex8 (DW_OP_dup); // x, x
+ m_stream.PutHex8 (DW_OP_APPLE_value_of); // x, val(x)
+ m_stream.PutHex8 (DW_OP_lit1); // x, val(x), 1
+ m_stream.PutHex8 (DW_OP_minus); // x, val(x)-1
+ m_stream.PutHex8 (DW_OP_APPLE_assign); // x with new value
+ break;
+
+ case clang::UnaryOperator::AddrOf:
+ m_stream.PutHex8 (DW_OP_APPLE_address_of);
+ break;
+
+ case clang::UnaryOperator::Deref:
+ m_stream.PutHex8 (DW_OP_APPLE_deref_type);
+ break;
+
+ case clang::UnaryOperator::Plus:
+ m_stream.PutHex8 (DW_OP_abs);
+ break;
+
+ case clang::UnaryOperator::Minus:
+ m_stream.PutHex8 (DW_OP_neg);
+ break;
+
+ case clang::UnaryOperator::Not:
+ m_stream.PutHex8 (DW_OP_not);
+ break;
+
+ case clang::UnaryOperator::LNot:
+ m_stream.PutHex8 (DW_OP_lit0);
+ m_stream.PutHex8 (DW_OP_eq);
+ break;
+
+ case clang::UnaryOperator::Real:
+ m_stream.PutHex8(DW_OP_APPLE_error);
+ break;
+
+ case clang::UnaryOperator::Imag:
+ m_stream.PutHex8(DW_OP_APPLE_error);
+ break;
+
+ case clang::UnaryOperator::Extension:
+ m_stream.PutHex8(DW_OP_APPLE_error);
+ break;
+
+ case clang::UnaryOperator::OffsetOf:
+ break;
+
+ default:
+ assert(!"Unknown unary operator!");
+ break;
+ }
+}
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitCastExpr (clang::CastExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+// CastExpr::CastKind cast_kind = Node->getCastKind();
+// switch (cast_kind)
+// {
+// case CastExpr::CK_Unknown:
+// case CastExpr::CK_BitCast: // Used for reinterpret_cast.
+// case CastExpr::CK_NoOp: // Used for const_cast.
+// case CastExpr::CK_BaseToDerived: // Base to derived class casts.
+// case CastExpr::CK_DerivedToBase: // Derived to base class casts.
+// case CastExpr::CK_Dynamic: // Dynamic cast.
+// case CastExpr::CK_ToUnion: // Cast to union (GCC extension).
+// case CastExpr::CK_ArrayToPointerDecay: // Array to pointer decay.
+// case CastExpr::CK_FunctionToPointerDecay: // Function to pointer decay.
+// case CastExpr::CK_NullToMemberPointer: // Null pointer to member pointer.
+// case CastExpr::CK_BaseToDerivedMemberPointer: // Member pointer in base class to member pointer in derived class.
+// case CastExpr::CK_DerivedToBaseMemberPointer: // Member pointer in derived class to member pointer in base class.
+// case CastExpr::CK_UserDefinedConversion: // Conversion using a user defined type conversion function.
+// case CastExpr::CK_ConstructorConversion: // Conversion by constructor
+// case CastExpr::CK_IntegralToPointer: // Integral to pointer
+// case CastExpr::CK_PointerToIntegral: // Pointer to integral
+// case CastExpr::CK_ToVoid: // Cast to void
+// case CastExpr::CK_VectorSplat: // Casting from an integer/floating type to an extended
+// // vector type with the same element type as the src type. Splats the
+// // src expression into the destination expression.
+// case CastExpr::CK_IntegralCast: // Casting between integral types of different size.
+// case CastExpr::CK_IntegralToFloating: // Integral to floating point.
+// case CastExpr::CK_FloatingToIntegral: // Floating point to integral.
+// case CastExpr::CK_FloatingCast: // Casting between floating types of different size.
+// m_stream.PutHex8(DW_OP_APPLE_error);
+// break;
+// }
+ uint32_t cast_type_count = 0;
+ lldb_private::Scalar::Type cast_type_encoding = GetScalarTypeForClangType (m_ast_context, Node->getType(), cast_type_count);
+
+
+ Visit (Node->getSubExpr());
+
+ // Simple scalar cast
+ if (cast_type_encoding != lldb_private::Scalar::e_void && cast_type_count == 1)
+ {
+ // Only cast if our scalar types mismatch
+ uint32_t castee_type_count = 0;
+ lldb_private::Scalar::Type castee_type_encoding = GetScalarTypeForClangType (m_ast_context, Node->getSubExpr()->getType(), castee_type_count);
+ if (cast_type_encoding != castee_type_encoding &&
+ castee_type_encoding != lldb_private::Scalar::e_void)
+ {
+ m_stream.PutHex8(DW_OP_APPLE_scalar_cast);
+ m_stream.PutHex8(cast_type_encoding);
+ }
+ }
+ else
+ {
+ // Handle more complex casts with clang types soon!
+ m_stream.PutHex8(DW_OP_APPLE_error);
+ }
+}
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitArraySubscriptExpr (clang::ArraySubscriptExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+ Visit (Node->getBase());
+ Visit (Node->getIdx());
+ m_stream.PutHex8(DW_OP_APPLE_array_ref);
+}
+
+//
+//CLANG_STMT_RESULT
+//lldb_private::ClangStmtVisitor::VisitImplicitCastExpr (clang::ImplicitCastExpr *Node)
+//{
+// DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+// m_stream.PutHex8(DW_OP_APPLE_scalar_cast);
+// Visit (Node->getSubExpr());
+//}
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitSizeOfAlignOfExpr (clang::SizeOfAlignOfExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitMemberExpr (clang::MemberExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+ clang::Expr *parent = Node->getBase();
+ Visit (parent);
+ clang::QualType parent_clang_type = parent->getType();
+ clang::NamedDecl *member_named_decl = cast<clang::NamedDecl>(Node->getMemberDecl()->getCanonicalDecl());
+
+// DeclarationName member_name = member->getDeclName();
+
+ clang::Type::TypeClass parent_type_class = parent_clang_type->getTypeClass();
+ if (parent_type_class == clang::Type::Pointer)
+ {
+ clang::PointerType *pointer_type = cast<clang::PointerType>(parent_clang_type.getTypePtr());
+ parent_clang_type = pointer_type->getPointeeType();
+ parent_type_class = parent_clang_type->getTypeClass();
+ }
+
+ switch (parent_type_class)
+ {
+ case clang::Type::Record:
+ {
+ const clang::RecordType *record_type = cast<clang::RecordType>(parent_clang_type.getTypePtr());
+ const clang::RecordDecl *record_decl = record_type->getDecl();
+ assert(record_decl);
+ const clang::ASTRecordLayout &record_layout = m_ast_context.getASTRecordLayout(record_decl);
+ uint32_t field_idx = 0;
+ clang::RecordDecl::field_iterator field, field_end;
+ for (field = record_decl->field_begin(), field_end = record_decl->field_end(); field != field_end; ++field, ++field_idx)
+ {
+ clang::NamedDecl *field_named_decl = cast<clang::NamedDecl>(field->getCanonicalDecl());
+ if (field_named_decl == member_named_decl)
+ {
+ std::pair<uint64_t, unsigned> field_type_info = m_ast_context.getTypeInfo(field->getType());
+ uint64_t field_bit_offset = record_layout.getFieldOffset (field_idx);
+ uint64_t field_byte_offset = field_bit_offset / 8;
+ uint32_t field_bitfield_bit_size = 0;
+ //uint32_t field_bitfield_bit_offset = field_bit_offset % 8;
+
+ if (field->isBitField())
+ {
+ clang::Expr* bit_width_expr = field->getBitWidth();
+ if (bit_width_expr)
+ {
+ llvm::APSInt bit_width_apsint;
+ if (bit_width_expr->isIntegerConstantExpr(bit_width_apsint, m_ast_context))
+ {
+ field_bitfield_bit_size = bit_width_apsint.getLimitedValue(UINT32_MAX);
+ }
+ }
+ }
+
+ if (Node->isArrow())
+ {
+ m_stream.PutHex8(DW_OP_deref);
+ }
+ else
+ {
+ m_stream.PutHex8(DW_OP_APPLE_address_of);
+ }
+
+ if (field_byte_offset)
+ {
+ if (EncodeUInt64(field_byte_offset, 0))
+ {
+ m_stream.PutHex8(DW_OP_plus);
+ }
+ }
+ m_stream.PutHex8(DW_OP_APPLE_clang_cast);
+ m_stream.PutPointer(field->getType().getAsOpaquePtr());
+ break;
+ }
+ }
+ }
+ break;
+
+ default:
+ assert(!"Unhandled MemberExpr");
+ break;
+ }
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitExtVectorElementExpr (clang::ExtVectorElementExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitParenExpr(clang::ParenExpr *paren_expr)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+ Visit (paren_expr->getSubExpr());
+}
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitInitListExpr (clang::InitListExpr *init_list_expr)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitBinaryOperator (clang::BinaryOperator *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+
+ Visit(Node->getLHS());
+ Visit(Node->getRHS());
+
+ switch (Node->getOpcode())
+ {
+ default: assert(0 && "Unknown binary operator!");
+ case clang::BinaryOperator::PtrMemD: m_stream.PutHex8(DW_OP_APPLE_error); break;
+ case clang::BinaryOperator::PtrMemI: m_stream.PutHex8(DW_OP_APPLE_error); break;
+ case clang::BinaryOperator::Mul: m_stream.PutHex8(DW_OP_mul); break;
+ case clang::BinaryOperator::Div: m_stream.PutHex8(DW_OP_div); break;
+ case clang::BinaryOperator::Rem: m_stream.PutHex8(DW_OP_mod); break;
+ case clang::BinaryOperator::Add: m_stream.PutHex8(DW_OP_plus); break;
+ case clang::BinaryOperator::Sub: m_stream.PutHex8(DW_OP_minus); break;
+ case clang::BinaryOperator::Shl: m_stream.PutHex8(DW_OP_shl); break;
+ case clang::BinaryOperator::Shr: m_stream.PutHex8(DW_OP_shr); break;
+ case clang::BinaryOperator::LT: m_stream.PutHex8(DW_OP_lt); break;
+ case clang::BinaryOperator::GT: m_stream.PutHex8(DW_OP_gt); break;
+ case clang::BinaryOperator::LE: m_stream.PutHex8(DW_OP_le); break;
+ case clang::BinaryOperator::GE: m_stream.PutHex8(DW_OP_ge); break;
+ case clang::BinaryOperator::EQ: m_stream.PutHex8(DW_OP_eq); break;
+ case clang::BinaryOperator::NE: m_stream.PutHex8(DW_OP_ne); break;
+ case clang::BinaryOperator::And: m_stream.PutHex8(DW_OP_and); break;
+ case clang::BinaryOperator::Xor: m_stream.PutHex8(DW_OP_xor); break;
+ case clang::BinaryOperator::Or : m_stream.PutHex8(DW_OP_or); break;
+ case clang::BinaryOperator::LAnd:
+ // Do we need to call an operator here on objects? If so
+ // we will need a DW_OP_apple_logical_and
+ m_stream.PutHex8(DW_OP_lit0);
+ m_stream.PutHex8(DW_OP_ne);
+ m_stream.PutHex8(DW_OP_swap);
+ m_stream.PutHex8(DW_OP_lit0);
+ m_stream.PutHex8(DW_OP_ne);
+ m_stream.PutHex8(DW_OP_and);
+ break;
+
+ case clang::BinaryOperator::LOr :
+ // Do we need to call an operator here on objects? If so
+ // we will need a DW_OP_apple_logical_or
+ m_stream.PutHex8(DW_OP_lit0);
+ m_stream.PutHex8(DW_OP_ne);
+ m_stream.PutHex8(DW_OP_swap);
+ m_stream.PutHex8(DW_OP_lit0);
+ m_stream.PutHex8(DW_OP_ne);
+ m_stream.PutHex8(DW_OP_or);
+ break;
+
+ case clang::BinaryOperator::Assign:
+ m_stream.PutHex8(DW_OP_APPLE_assign);
+ break;
+
+ case clang::BinaryOperator::MulAssign:
+ m_stream.PutHex8(DW_OP_over);
+ m_stream.PutHex8(DW_OP_swap);
+ m_stream.PutHex8(DW_OP_mul);
+ m_stream.PutHex8(DW_OP_APPLE_assign);
+ break;
+
+ case clang::BinaryOperator::DivAssign:
+ m_stream.PutHex8(DW_OP_over);
+ m_stream.PutHex8(DW_OP_swap);
+ m_stream.PutHex8(DW_OP_div);
+ m_stream.PutHex8(DW_OP_APPLE_assign);
+ break;
+
+ case clang::BinaryOperator::RemAssign:
+ m_stream.PutHex8(DW_OP_over);
+ m_stream.PutHex8(DW_OP_swap);
+ m_stream.PutHex8(DW_OP_mod);
+ m_stream.PutHex8(DW_OP_APPLE_assign);
+ break;
+
+ case clang::BinaryOperator::AddAssign:
+ m_stream.PutHex8(DW_OP_over);
+ m_stream.PutHex8(DW_OP_swap);
+ m_stream.PutHex8(DW_OP_plus);
+ m_stream.PutHex8(DW_OP_APPLE_assign);
+ break;
+
+ case clang::BinaryOperator::SubAssign:
+ m_stream.PutHex8(DW_OP_over);
+ m_stream.PutHex8(DW_OP_swap);
+ m_stream.PutHex8(DW_OP_minus);
+ m_stream.PutHex8(DW_OP_APPLE_assign);
+ break;
+
+ case clang::BinaryOperator::ShlAssign:
+ m_stream.PutHex8(DW_OP_over);
+ m_stream.PutHex8(DW_OP_swap);
+ m_stream.PutHex8(DW_OP_shl);
+ m_stream.PutHex8(DW_OP_APPLE_assign);
+ break;
+
+ case clang::BinaryOperator::ShrAssign:
+ m_stream.PutHex8(DW_OP_over);
+ m_stream.PutHex8(DW_OP_swap);
+ m_stream.PutHex8(DW_OP_shr);
+ m_stream.PutHex8(DW_OP_APPLE_assign);
+ break;
+
+ case clang::BinaryOperator::AndAssign:
+ m_stream.PutHex8(DW_OP_over);
+ m_stream.PutHex8(DW_OP_swap);
+ m_stream.PutHex8(DW_OP_and);
+ m_stream.PutHex8(DW_OP_APPLE_assign);
+ break;
+
+ case clang::BinaryOperator::OrAssign:
+ m_stream.PutHex8(DW_OP_over);
+ m_stream.PutHex8(DW_OP_swap);
+ m_stream.PutHex8(DW_OP_or);
+ m_stream.PutHex8(DW_OP_APPLE_assign);
+ break;
+
+ case clang::BinaryOperator::XorAssign:
+ m_stream.PutHex8(DW_OP_over);
+ m_stream.PutHex8(DW_OP_swap);
+ m_stream.PutHex8(DW_OP_xor);
+ m_stream.PutHex8(DW_OP_APPLE_assign);
+ break;
+
+ case clang::BinaryOperator::Comma:
+ // Nothing needs to be done here right?
+ break;
+ }
+}
+
+
+//CLANG_STMT_RESULT
+//lldb_private::ClangStmtVisitor::VisitCompoundAssignOperator (CompoundAssignOperator *Node)
+//{
+// DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+//
+//}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitAddrLabelExpr (clang::AddrLabelExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitTypesCompatibleExpr (clang::TypesCompatibleExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+
+ // C++
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitCXXNamedCastExpr (clang::CXXNamedCastExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitCXXBoolLiteralExpr (clang::CXXBoolLiteralExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitCXXThisExpr (clang::CXXThisExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitCXXFunctionalCastExpr (clang::CXXFunctionalCastExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+
+ // ObjC
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitObjCEncodeExpr (clang::ObjCEncodeExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitObjCMessageExpr (clang::ObjCMessageExpr* Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitObjCSelectorExpr (clang::ObjCSelectorExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitObjCProtocolExpr (clang::ObjCProtocolExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitObjCPropertyRefExpr (clang::ObjCPropertyRefExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitObjCImplicitSetterGetterRefExpr (clang::ObjCImplicitSetterGetterRefExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitObjCIvarRefExpr (clang::ObjCIvarRefExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
+CLANG_STMT_RESULT
+lldb_private::ClangStmtVisitor::VisitObjCSuperExpr (clang::ObjCSuperExpr *Node)
+{
+ DEBUG_PRINTF("%s\n", __PRETTY_FUNCTION__);
+}
+
+
diff --git a/source/Expression/DWARFExpression.cpp b/source/Expression/DWARFExpression.cpp
new file mode 100644
index 0000000..d7afa36
--- /dev/null
+++ b/source/Expression/DWARFExpression.cpp
@@ -0,0 +1,2589 @@
+//===-- DWARFExpression.cpp -------------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Expression/DWARFExpression.h"
+
+#include <vector>
+
+#include "lldb/Core/dwarf.h"
+#include "lldb/Core/Log.h"
+#include "lldb/Core/StreamString.h"
+#include "lldb/Core/Scalar.h"
+#include "lldb/Core/Value.h"
+
+#include "lldb/Expression/ClangExpressionDeclMap.h"
+#include "lldb/Expression/ClangExpressionVariable.h"
+
+#include "lldb/Host/Host.h"
+
+#include "lldb/lldb-private-log.h"
+
+#include "lldb/Symbol/ClangASTContext.h"
+#include "lldb/Symbol/Type.h"
+
+#include "lldb/Target/ExecutionContext.h"
+#include "lldb/Target/Process.h"
+#include "lldb/Target/RegisterContext.h"
+#include "lldb/Target/StackFrame.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+const char *
+DW_OP_value_to_name (uint32_t val)
+{
+ static char invalid[100];
+ switch (val) {
+ case 0x03: return "DW_OP_addr";
+ case 0x06: return "DW_OP_deref";
+ case 0x08: return "DW_OP_const1u";
+ case 0x09: return "DW_OP_const1s";
+ case 0x0a: return "DW_OP_const2u";
+ case 0x0b: return "DW_OP_const2s";
+ case 0x0c: return "DW_OP_const4u";
+ case 0x0d: return "DW_OP_const4s";
+ case 0x0e: return "DW_OP_const8u";
+ case 0x0f: return "DW_OP_const8s";
+ case 0x10: return "DW_OP_constu";
+ case 0x11: return "DW_OP_consts";
+ case 0x12: return "DW_OP_dup";
+ case 0x13: return "DW_OP_drop";
+ case 0x14: return "DW_OP_over";
+ case 0x15: return "DW_OP_pick";
+ case 0x16: return "DW_OP_swap";
+ case 0x17: return "DW_OP_rot";
+ case 0x18: return "DW_OP_xderef";
+ case 0x19: return "DW_OP_abs";
+ case 0x1a: return "DW_OP_and";
+ case 0x1b: return "DW_OP_div";
+ case 0x1c: return "DW_OP_minus";
+ case 0x1d: return "DW_OP_mod";
+ case 0x1e: return "DW_OP_mul";
+ case 0x1f: return "DW_OP_neg";
+ case 0x20: return "DW_OP_not";
+ case 0x21: return "DW_OP_or";
+ case 0x22: return "DW_OP_plus";
+ case 0x23: return "DW_OP_plus_uconst";
+ case 0x24: return "DW_OP_shl";
+ case 0x25: return "DW_OP_shr";
+ case 0x26: return "DW_OP_shra";
+ case 0x27: return "DW_OP_xor";
+ case 0x2f: return "DW_OP_skip";
+ case 0x28: return "DW_OP_bra";
+ case 0x29: return "DW_OP_eq";
+ case 0x2a: return "DW_OP_ge";
+ case 0x2b: return "DW_OP_gt";
+ case 0x2c: return "DW_OP_le";
+ case 0x2d: return "DW_OP_lt";
+ case 0x2e: return "DW_OP_ne";
+ case 0x30: return "DW_OP_lit0";
+ case 0x31: return "DW_OP_lit1";
+ case 0x32: return "DW_OP_lit2";
+ case 0x33: return "DW_OP_lit3";
+ case 0x34: return "DW_OP_lit4";
+ case 0x35: return "DW_OP_lit5";
+ case 0x36: return "DW_OP_lit6";
+ case 0x37: return "DW_OP_lit7";
+ case 0x38: return "DW_OP_lit8";
+ case 0x39: return "DW_OP_lit9";
+ case 0x3a: return "DW_OP_lit10";
+ case 0x3b: return "DW_OP_lit11";
+ case 0x3c: return "DW_OP_lit12";
+ case 0x3d: return "DW_OP_lit13";
+ case 0x3e: return "DW_OP_lit14";
+ case 0x3f: return "DW_OP_lit15";
+ case 0x40: return "DW_OP_lit16";
+ case 0x41: return "DW_OP_lit17";
+ case 0x42: return "DW_OP_lit18";
+ case 0x43: return "DW_OP_lit19";
+ case 0x44: return "DW_OP_lit20";
+ case 0x45: return "DW_OP_lit21";
+ case 0x46: return "DW_OP_lit22";
+ case 0x47: return "DW_OP_lit23";
+ case 0x48: return "DW_OP_lit24";
+ case 0x49: return "DW_OP_lit25";
+ case 0x4a: return "DW_OP_lit26";
+ case 0x4b: return "DW_OP_lit27";
+ case 0x4c: return "DW_OP_lit28";
+ case 0x4d: return "DW_OP_lit29";
+ case 0x4e: return "DW_OP_lit30";
+ case 0x4f: return "DW_OP_lit31";
+ case 0x50: return "DW_OP_reg0";
+ case 0x51: return "DW_OP_reg1";
+ case 0x52: return "DW_OP_reg2";
+ case 0x53: return "DW_OP_reg3";
+ case 0x54: return "DW_OP_reg4";
+ case 0x55: return "DW_OP_reg5";
+ case 0x56: return "DW_OP_reg6";
+ case 0x57: return "DW_OP_reg7";
+ case 0x58: return "DW_OP_reg8";
+ case 0x59: return "DW_OP_reg9";
+ case 0x5a: return "DW_OP_reg10";
+ case 0x5b: return "DW_OP_reg11";
+ case 0x5c: return "DW_OP_reg12";
+ case 0x5d: return "DW_OP_reg13";
+ case 0x5e: return "DW_OP_reg14";
+ case 0x5f: return "DW_OP_reg15";
+ case 0x60: return "DW_OP_reg16";
+ case 0x61: return "DW_OP_reg17";
+ case 0x62: return "DW_OP_reg18";
+ case 0x63: return "DW_OP_reg19";
+ case 0x64: return "DW_OP_reg20";
+ case 0x65: return "DW_OP_reg21";
+ case 0x66: return "DW_OP_reg22";
+ case 0x67: return "DW_OP_reg23";
+ case 0x68: return "DW_OP_reg24";
+ case 0x69: return "DW_OP_reg25";
+ case 0x6a: return "DW_OP_reg26";
+ case 0x6b: return "DW_OP_reg27";
+ case 0x6c: return "DW_OP_reg28";
+ case 0x6d: return "DW_OP_reg29";
+ case 0x6e: return "DW_OP_reg30";
+ case 0x6f: return "DW_OP_reg31";
+ case 0x70: return "DW_OP_breg0";
+ case 0x71: return "DW_OP_breg1";
+ case 0x72: return "DW_OP_breg2";
+ case 0x73: return "DW_OP_breg3";
+ case 0x74: return "DW_OP_breg4";
+ case 0x75: return "DW_OP_breg5";
+ case 0x76: return "DW_OP_breg6";
+ case 0x77: return "DW_OP_breg7";
+ case 0x78: return "DW_OP_breg8";
+ case 0x79: return "DW_OP_breg9";
+ case 0x7a: return "DW_OP_breg10";
+ case 0x7b: return "DW_OP_breg11";
+ case 0x7c: return "DW_OP_breg12";
+ case 0x7d: return "DW_OP_breg13";
+ case 0x7e: return "DW_OP_breg14";
+ case 0x7f: return "DW_OP_breg15";
+ case 0x80: return "DW_OP_breg16";
+ case 0x81: return "DW_OP_breg17";
+ case 0x82: return "DW_OP_breg18";
+ case 0x83: return "DW_OP_breg19";
+ case 0x84: return "DW_OP_breg20";
+ case 0x85: return "DW_OP_breg21";
+ case 0x86: return "DW_OP_breg22";
+ case 0x87: return "DW_OP_breg23";
+ case 0x88: return "DW_OP_breg24";
+ case 0x89: return "DW_OP_breg25";
+ case 0x8a: return "DW_OP_breg26";
+ case 0x8b: return "DW_OP_breg27";
+ case 0x8c: return "DW_OP_breg28";
+ case 0x8d: return "DW_OP_breg29";
+ case 0x8e: return "DW_OP_breg30";
+ case 0x8f: return "DW_OP_breg31";
+ case 0x90: return "DW_OP_regx";
+ case 0x91: return "DW_OP_fbreg";
+ case 0x92: return "DW_OP_bregx";
+ case 0x93: return "DW_OP_piece";
+ case 0x94: return "DW_OP_deref_size";
+ case 0x95: return "DW_OP_xderef_size";
+ case 0x96: return "DW_OP_nop";
+ case 0x97: return "DW_OP_push_object_address";
+ case 0x98: return "DW_OP_call2";
+ case 0x99: return "DW_OP_call4";
+ case 0x9a: return "DW_OP_call_ref";
+ case DW_OP_APPLE_array_ref: return "DW_OP_APPLE_array_ref";
+ case DW_OP_APPLE_extern: return "DW_OP_APPLE_extern";
+ case DW_OP_APPLE_uninit: return "DW_OP_APPLE_uninit";
+ case DW_OP_APPLE_assign: return "DW_OP_APPLE_assign";
+ case DW_OP_APPLE_address_of: return "DW_OP_APPLE_address_of";
+ case DW_OP_APPLE_value_of: return "DW_OP_APPLE_value_of";
+ case DW_OP_APPLE_deref_type: return "DW_OP_APPLE_deref_type";
+ case DW_OP_APPLE_expr_local: return "DW_OP_APPLE_expr_local";
+ case DW_OP_APPLE_constf: return "DW_OP_APPLE_constf";
+ case DW_OP_APPLE_scalar_cast: return "DW_OP_APPLE_scalar_cast";
+ case DW_OP_APPLE_clang_cast: return "DW_OP_APPLE_clang_cast";
+ case DW_OP_APPLE_clear: return "DW_OP_APPLE_clear";
+ case DW_OP_APPLE_error: return "DW_OP_APPLE_error";
+ default:
+ snprintf (invalid, sizeof(invalid), "Unknown DW_OP constant: 0x%x", val);
+ return invalid;
+ }
+}
+
+
+//----------------------------------------------------------------------
+// DWARFExpression constructor
+//----------------------------------------------------------------------
+DWARFExpression::DWARFExpression() :
+ m_data(),
+ m_reg_kind (eRegisterKindDWARF),
+ m_loclist_base_addr(),
+ m_expr_locals (NULL),
+ m_decl_map (NULL)
+{
+}
+
+DWARFExpression::DWARFExpression(const DWARFExpression& rhs) :
+ m_data(rhs.m_data),
+ m_reg_kind (rhs.m_reg_kind),
+ m_loclist_base_addr(rhs.m_loclist_base_addr),
+ m_expr_locals (rhs.m_expr_locals),
+ m_decl_map (rhs.m_decl_map)
+{
+}
+
+
+DWARFExpression::DWARFExpression(const DataExtractor& data, uint32_t data_offset, uint32_t data_length, const Address* loclist_base_addr_ptr) :
+ m_data(data, data_offset, data_length),
+ m_reg_kind (eRegisterKindDWARF),
+ m_loclist_base_addr(),
+ m_expr_locals (NULL),
+ m_decl_map (NULL)
+{
+ if (loclist_base_addr_ptr)
+ m_loclist_base_addr = *loclist_base_addr_ptr;
+}
+
+//----------------------------------------------------------------------
+// Destructor
+//----------------------------------------------------------------------
+DWARFExpression::~DWARFExpression()
+{
+}
+
+
+bool
+DWARFExpression::IsValid() const
+{
+ return m_data.GetByteSize() > 0;
+}
+
+
+void
+DWARFExpression::SetExpressionLocalVariableList (ClangExpressionVariableList *locals)
+{
+ m_expr_locals = locals;
+}
+
+void
+DWARFExpression::SetExpressionDeclMap (ClangExpressionDeclMap *decl_map)
+{
+ m_decl_map = decl_map;
+}
+
+void
+DWARFExpression::SetOpcodeData (const DataExtractor& data, const Address* loclist_base_addr_ptr)
+{
+ m_data = data;
+ if (loclist_base_addr_ptr != NULL)
+ m_loclist_base_addr = *loclist_base_addr_ptr;
+ else
+ m_loclist_base_addr.Clear();
+}
+
+void
+DWARFExpression::SetOpcodeData (const DataExtractor& data, uint32_t data_offset, uint32_t data_length, const Address* loclist_base_addr_ptr)
+{
+ m_data.SetData(data, data_offset, data_length);
+ if (loclist_base_addr_ptr != NULL)
+ m_loclist_base_addr = *loclist_base_addr_ptr;
+ else
+ m_loclist_base_addr.Clear();
+}
+
+void
+DWARFExpression::DumpLocation (Stream *s, uint32_t offset, uint32_t length, lldb::DescriptionLevel level) const
+{
+ if (!m_data.ValidOffsetForDataOfSize(offset, length))
+ return;
+ const uint32_t start_offset = offset;
+ const uint32_t end_offset = offset + length;
+ while (m_data.ValidOffset(offset) && offset < end_offset)
+ {
+ const uint32_t op_offset = offset;
+ const uint8_t op = m_data.GetU8(&offset);
+
+ switch (level)
+ {
+ case lldb::eDescriptionLevelBrief:
+ if (offset > start_offset)
+ s->PutChar(' ');
+ break;
+
+ case lldb::eDescriptionLevelFull:
+ case lldb::eDescriptionLevelVerbose:
+ if (offset > start_offset)
+ s->EOL();
+ s->Indent();
+ if (level == lldb::eDescriptionLevelFull)
+ break;
+ // Fall through for verbose and print offset and DW_OP prefix..
+ s->Printf("0x%8.8x: %s", op_offset, op >= DW_OP_APPLE_uninit ? "DW_OP_APPLE_" : "DW_OP_");
+ break;
+ }
+
+ switch (op)
+ {
+ case DW_OP_addr: *s << "addr(" << m_data.GetAddress(&offset) << ") "; break; // 0x03 1 address
+ case DW_OP_deref: *s << "deref"; break; // 0x06
+ case DW_OP_const1u: s->Printf("const1u(0x%2.2x) ", m_data.GetU8(&offset)); break; // 0x08 1 1-byte constant
+ case DW_OP_const1s: s->Printf("const1s(0x%2.2x) ", m_data.GetU8(&offset)); break; // 0x09 1 1-byte constant
+ case DW_OP_const2u: s->Printf("const2u(0x%4.4x) ", m_data.GetU16(&offset)); break; // 0x0a 1 2-byte constant
+ case DW_OP_const2s: s->Printf("const2s(0x%4.4x) ", m_data.GetU16(&offset)); break; // 0x0b 1 2-byte constant
+ case DW_OP_const4u: s->Printf("const4u(0x%8.8x) ", m_data.GetU32(&offset)); break; // 0x0c 1 4-byte constant
+ case DW_OP_const4s: s->Printf("const4s(0x%8.8x) ", m_data.GetU32(&offset)); break; // 0x0d 1 4-byte constant
+ case DW_OP_const8u: s->Printf("const8u(0x%16.16llx) ", m_data.GetU64(&offset)); break; // 0x0e 1 8-byte constant
+ case DW_OP_const8s: s->Printf("const8s(0x%16.16llx) ", m_data.GetU64(&offset)); break; // 0x0f 1 8-byte constant
+ case DW_OP_constu: s->Printf("constu(0x%x) ", m_data.GetULEB128(&offset)); break; // 0x10 1 ULEB128 constant
+ case DW_OP_consts: s->Printf("consts(0x%x) ", m_data.GetSLEB128(&offset)); break; // 0x11 1 SLEB128 constant
+ case DW_OP_dup: s->PutCString("dup"); break; // 0x12
+ case DW_OP_drop: s->PutCString("drop"); break; // 0x13
+ case DW_OP_over: s->PutCString("over"); break; // 0x14
+ case DW_OP_pick: s->Printf("pick(0x%2.2x) ", m_data.GetU8(&offset)); break; // 0x15 1 1-byte stack index
+ case DW_OP_swap: s->PutCString("swap"); break; // 0x16
+ case DW_OP_rot: s->PutCString("rot"); break; // 0x17
+ case DW_OP_xderef: s->PutCString("xderef"); break; // 0x18
+ case DW_OP_abs: s->PutCString("abs"); break; // 0x19
+ case DW_OP_and: s->PutCString("and"); break; // 0x1a
+ case DW_OP_div: s->PutCString("div"); break; // 0x1b
+ case DW_OP_minus: s->PutCString("minus"); break; // 0x1c
+ case DW_OP_mod: s->PutCString("mod"); break; // 0x1d
+ case DW_OP_mul: s->PutCString("mul"); break; // 0x1e
+ case DW_OP_neg: s->PutCString("neg"); break; // 0x1f
+ case DW_OP_not: s->PutCString("not"); break; // 0x20
+ case DW_OP_or: s->PutCString("or"); break; // 0x21
+ case DW_OP_plus: s->PutCString("plus"); break; // 0x22
+ case DW_OP_plus_uconst: // 0x23 1 ULEB128 addend
+ s->Printf("plus_uconst(0x%x) ", m_data.GetULEB128(&offset));
+ break;
+
+ case DW_OP_shl: s->PutCString("shl"); break; // 0x24
+ case DW_OP_shr: s->PutCString("shr"); break; // 0x25
+ case DW_OP_shra: s->PutCString("shra"); break; // 0x26
+ case DW_OP_xor: s->PutCString("xor"); break; // 0x27
+ case DW_OP_skip: s->Printf("skip(0x%4.4x)", m_data.GetU16(&offset)); break; // 0x2f 1 signed 2-byte constant
+ case DW_OP_bra: s->Printf("bra(0x%4.4x)", m_data.GetU16(&offset)); break; // 0x28 1 signed 2-byte constant
+ case DW_OP_eq: s->PutCString("eq"); break; // 0x29
+ case DW_OP_ge: s->PutCString("ge"); break; // 0x2a
+ case DW_OP_gt: s->PutCString("gt"); break; // 0x2b
+ case DW_OP_le: s->PutCString("le"); break; // 0x2c
+ case DW_OP_lt: s->PutCString("lt"); break; // 0x2d
+ case DW_OP_ne: s->PutCString("ne"); break; // 0x2e
+
+ case DW_OP_lit0: // 0x30
+ case DW_OP_lit1: // 0x31
+ case DW_OP_lit2: // 0x32
+ case DW_OP_lit3: // 0x33
+ case DW_OP_lit4: // 0x34
+ case DW_OP_lit5: // 0x35
+ case DW_OP_lit6: // 0x36
+ case DW_OP_lit7: // 0x37
+ case DW_OP_lit8: // 0x38
+ case DW_OP_lit9: // 0x39
+ case DW_OP_lit10: // 0x3A
+ case DW_OP_lit11: // 0x3B
+ case DW_OP_lit12: // 0x3C
+ case DW_OP_lit13: // 0x3D
+ case DW_OP_lit14: // 0x3E
+ case DW_OP_lit15: // 0x3F
+ case DW_OP_lit16: // 0x40
+ case DW_OP_lit17: // 0x41
+ case DW_OP_lit18: // 0x42
+ case DW_OP_lit19: // 0x43
+ case DW_OP_lit20: // 0x44
+ case DW_OP_lit21: // 0x45
+ case DW_OP_lit22: // 0x46
+ case DW_OP_lit23: // 0x47
+ case DW_OP_lit24: // 0x48
+ case DW_OP_lit25: // 0x49
+ case DW_OP_lit26: // 0x4A
+ case DW_OP_lit27: // 0x4B
+ case DW_OP_lit28: // 0x4C
+ case DW_OP_lit29: // 0x4D
+ case DW_OP_lit30: // 0x4E
+ case DW_OP_lit31: s->Printf("lit%i", op - DW_OP_lit0); break; // 0x4f
+
+ case DW_OP_reg0: // 0x50
+ case DW_OP_reg1: // 0x51
+ case DW_OP_reg2: // 0x52
+ case DW_OP_reg3: // 0x53
+ case DW_OP_reg4: // 0x54
+ case DW_OP_reg5: // 0x55
+ case DW_OP_reg6: // 0x56
+ case DW_OP_reg7: // 0x57
+ case DW_OP_reg8: // 0x58
+ case DW_OP_reg9: // 0x59
+ case DW_OP_reg10: // 0x5A
+ case DW_OP_reg11: // 0x5B
+ case DW_OP_reg12: // 0x5C
+ case DW_OP_reg13: // 0x5D
+ case DW_OP_reg14: // 0x5E
+ case DW_OP_reg15: // 0x5F
+ case DW_OP_reg16: // 0x60
+ case DW_OP_reg17: // 0x61
+ case DW_OP_reg18: // 0x62
+ case DW_OP_reg19: // 0x63
+ case DW_OP_reg20: // 0x64
+ case DW_OP_reg21: // 0x65
+ case DW_OP_reg22: // 0x66
+ case DW_OP_reg23: // 0x67
+ case DW_OP_reg24: // 0x68
+ case DW_OP_reg25: // 0x69
+ case DW_OP_reg26: // 0x6A
+ case DW_OP_reg27: // 0x6B
+ case DW_OP_reg28: // 0x6C
+ case DW_OP_reg29: // 0x6D
+ case DW_OP_reg30: // 0x6E
+ case DW_OP_reg31: s->Printf("reg%i", op - DW_OP_reg0); break; // 0x6f
+
+ case DW_OP_breg0:
+ case DW_OP_breg1:
+ case DW_OP_breg2:
+ case DW_OP_breg3:
+ case DW_OP_breg4:
+ case DW_OP_breg5:
+ case DW_OP_breg6:
+ case DW_OP_breg7:
+ case DW_OP_breg8:
+ case DW_OP_breg9:
+ case DW_OP_breg10:
+ case DW_OP_breg11:
+ case DW_OP_breg12:
+ case DW_OP_breg13:
+ case DW_OP_breg14:
+ case DW_OP_breg15:
+ case DW_OP_breg16:
+ case DW_OP_breg17:
+ case DW_OP_breg18:
+ case DW_OP_breg19:
+ case DW_OP_breg20:
+ case DW_OP_breg21:
+ case DW_OP_breg22:
+ case DW_OP_breg23:
+ case DW_OP_breg24:
+ case DW_OP_breg25:
+ case DW_OP_breg26:
+ case DW_OP_breg27:
+ case DW_OP_breg28:
+ case DW_OP_breg29:
+ case DW_OP_breg30:
+ case DW_OP_breg31: s->Printf("breg%i(0x%x)", op - DW_OP_breg0, m_data.GetULEB128(&offset)); break;
+
+ case DW_OP_regx: // 0x90 1 ULEB128 register
+ s->Printf("regx(0x%x)", m_data.GetULEB128(&offset));
+ break;
+ case DW_OP_fbreg: // 0x91 1 SLEB128 offset
+ s->Printf("fbreg(0x%x)",m_data.GetSLEB128(&offset));
+ break;
+ case DW_OP_bregx: // 0x92 2 ULEB128 register followed by SLEB128 offset
+ s->Printf("bregx(0x%x, 0x%x)", m_data.GetULEB128(&offset), m_data.GetSLEB128(&offset));
+ break;
+ case DW_OP_piece: // 0x93 1 ULEB128 size of piece addressed
+ s->Printf("piece(0x%x)", m_data.GetULEB128(&offset));
+ break;
+ case DW_OP_deref_size: // 0x94 1 1-byte size of data retrieved
+ s->Printf("deref_size(0x%2.2x)", m_data.GetU8(&offset));
+ break;
+ case DW_OP_xderef_size: // 0x95 1 1-byte size of data retrieved
+ s->Printf("xderef_size(0x%2.2x)", m_data.GetU8(&offset));
+ break;
+ case DW_OP_nop: s->PutCString("nop"); break; // 0x96
+ case DW_OP_push_object_address: s->PutCString("push_object_address"); break; // 0x97 DWARF3
+ case DW_OP_call2: // 0x98 DWARF3 1 2-byte offset of DIE
+ s->Printf("call2(0x%4.4x)", m_data.GetU16(&offset));
+ break;
+ case DW_OP_call4: // 0x99 DWARF3 1 4-byte offset of DIE
+ s->Printf("call4(0x%8.8x)", m_data.GetU32(&offset));
+ break;
+ case DW_OP_call_ref: // 0x9a DWARF3 1 4- or 8-byte offset of DIE
+ s->Printf("call_ref(0x%8.8llx)", m_data.GetAddress(&offset));
+ break;
+// case DW_OP_form_tls_address: s << "form_tls_address"; break; // 0x9b DWARF3
+// case DW_OP_call_frame_cfa: s << "call_frame_cfa"; break; // 0x9c DWARF3
+// case DW_OP_bit_piece: // 0x9d DWARF3 2
+// s->Printf("bit_piece(0x%x, 0x%x)", m_data.GetULEB128(&offset), m_data.GetULEB128(&offset));
+// break;
+// case DW_OP_lo_user: s->PutCString("lo_user"); break; // 0xe0
+// case DW_OP_hi_user: s->PutCString("hi_user"); break; // 0xff
+ case DW_OP_APPLE_extern:
+ s->Printf("extern(%u)", m_data.GetULEB128(&offset));
+ break;
+ case DW_OP_APPLE_array_ref:
+ s->PutCString("array_ref");
+ break;
+ case DW_OP_APPLE_uninit:
+ s->PutCString("uninit"); // 0xF0
+ break;
+ case DW_OP_APPLE_assign: // 0xF1 - pops value off and assigns it to second item on stack (2nd item must have assignable context)
+ s->PutCString("assign");
+ break;
+ case DW_OP_APPLE_address_of: // 0xF2 - gets the address of the top stack item (top item must be a variable, or have value_type that is an address already)
+ s->PutCString("address_of");
+ break;
+ case DW_OP_APPLE_value_of: // 0xF3 - pops the value off the stack and pushes the value of that object (top item must be a variable, or expression local)
+ s->PutCString("value_of");
+ break;
+ case DW_OP_APPLE_deref_type: // 0xF4 - gets the address of the top stack item (top item must be a variable, or a clang type)
+ s->PutCString("deref_type");
+ break;
+ case DW_OP_APPLE_expr_local: // 0xF5 - ULEB128 expression local index
+ s->Printf("expr_local(%u)", m_data.GetULEB128(&offset));
+ break;
+ case DW_OP_APPLE_constf: // 0xF6 - 1 byte float size, followed by constant float data
+ {
+ uint8_t float_length = m_data.GetU8(&offset);
+ s->Printf("constf(<%u> ", float_length);
+ m_data.Dump(s, offset, eFormatHex, float_length, 1, UINT32_MAX, DW_INVALID_ADDRESS, 0, 0);
+ s->PutChar(')');
+ // Consume the float data
+ m_data.GetData(&offset, float_length);
+ }
+ break;
+ case DW_OP_APPLE_scalar_cast:
+ s->Printf("scalar_cast(%s)", Scalar::GetValueTypeAsCString ((Scalar::Type)m_data.GetU8(&offset)));
+ break;
+ case DW_OP_APPLE_clang_cast:
+ {
+ clang::Type *clang_type = (clang::Type *)m_data.GetMaxU64(&offset, sizeof(void*));
+ s->Printf("clang_cast(%p)", clang_type);
+ }
+ break;
+ case DW_OP_APPLE_clear:
+ s->PutCString("clear");
+ break;
+ case DW_OP_APPLE_error: // 0xFF - Stops expression evaluation and returns an error (no args)
+ s->PutCString("error");
+ break;
+ }
+ }
+}
+
+void
+DWARFExpression::SetLocationListBaseAddress(Address& base_addr)
+{
+ m_loclist_base_addr = base_addr;
+}
+
+int
+DWARFExpression::GetRegisterKind ()
+{
+ return m_reg_kind;
+}
+
+void
+DWARFExpression::SetRegisterKind (int reg_kind)
+{
+ m_reg_kind = reg_kind;
+}
+
+bool
+DWARFExpression::IsLocationList() const
+{
+ return m_loclist_base_addr.IsSectionOffset();
+}
+
+void
+DWARFExpression::GetDescription (Stream *s, lldb::DescriptionLevel level) const
+{
+ if (IsLocationList())
+ {
+ // We have a location list
+ uint32_t offset = 0;
+ uint32_t count = 0;
+ Address base_addr(m_loclist_base_addr);
+ while (m_data.ValidOffset(offset))
+ {
+ lldb::addr_t begin_addr_offset = m_data.GetAddress(&offset);
+ lldb::addr_t end_addr_offset = m_data.GetAddress(&offset);
+ if (begin_addr_offset < end_addr_offset)
+ {
+ if (count > 0)
+ s->PutCString(", ");
+ AddressRange addr_range(base_addr, end_addr_offset - begin_addr_offset);
+ addr_range.GetBaseAddress().SetOffset(base_addr.GetOffset() + begin_addr_offset);
+ addr_range.Dump (s, NULL, Address::DumpStyleFileAddress);
+ s->PutChar('{');
+ uint32_t location_length = m_data.GetU16(&offset);
+ DumpLocation (s, offset, location_length, level);
+ s->PutChar('}');
+ offset += location_length;
+ }
+ else if (begin_addr_offset == 0 && end_addr_offset == 0)
+ {
+ // The end of the location list is marked by both the start and end offset being zero
+ break;
+ }
+ else
+ {
+ if (m_data.GetAddressByteSize() == 4 && begin_addr_offset == 0xFFFFFFFFull ||
+ m_data.GetAddressByteSize() == 8 && begin_addr_offset == 0xFFFFFFFFFFFFFFFFull)
+ {
+ // We have a new base address
+ if (count > 0)
+ s->PutCString(", ");
+ *s << "base_addr = " << end_addr_offset;
+ }
+ }
+
+ count++;
+ }
+ }
+ else
+ {
+ // We have a normal location that contains DW_OP location opcodes
+ DumpLocation (s, 0, m_data.GetByteSize(), level);
+ }
+}
+
+static bool
+ReadRegisterValueAsScalar
+(
+ ExecutionContext *exe_ctx,
+ uint32_t reg_kind,
+ uint32_t reg_num,
+ Error *error_ptr,
+ Value &value
+)
+{
+ if (exe_ctx && exe_ctx->frame)
+ {
+ RegisterContext *reg_context = exe_ctx->frame->GetRegisterContext();
+
+ if (reg_context == NULL)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat("No register context in frame.\n");
+ }
+ else
+ {
+ uint32_t native_reg = reg_context->ConvertRegisterKindToRegisterNumber(reg_kind, reg_num);
+ if (native_reg == LLDB_INVALID_REGNUM)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat("Unable to convert register kind=%u reg_num=%u to a native register number.\n", reg_kind, reg_num);
+ }
+ else
+ {
+ value.SetValueType (Value::eValueTypeScalar);
+ value.SetContext (Value::eContextTypeDCRegisterInfo, const_cast<RegisterInfo *>(reg_context->GetRegisterInfoAtIndex(native_reg)));
+
+ if (reg_context->ReadRegisterValue (native_reg, value.GetScalar()))
+ return true;
+
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat("Failed to read register %u.\n", native_reg);
+ }
+ }
+ }
+ else
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat("Invalid frame in execution context.\n");
+ }
+ return false;
+}
+
+bool
+DWARFExpression::LocationListContainsLoadAddress (Process* process, const Address &addr) const
+{
+ if (IsLocationList())
+ {
+ uint32_t offset = 0;
+ const addr_t load_addr = addr.GetLoadAddress(process);
+
+ if (load_addr == LLDB_INVALID_ADDRESS)
+ return false;
+
+ addr_t loc_list_base_addr = m_loclist_base_addr.GetLoadAddress(process);
+
+ if (loc_list_base_addr == LLDB_INVALID_ADDRESS)
+ return false;
+
+ while (m_data.ValidOffset(offset))
+ {
+ // We need to figure out what the value is for the location.
+ addr_t lo_pc = m_data.GetAddress(&offset);
+ addr_t hi_pc = m_data.GetAddress(&offset);
+ if (lo_pc == 0 && hi_pc == 0)
+ break;
+ else
+ {
+ lo_pc += loc_list_base_addr;
+ hi_pc += loc_list_base_addr;
+
+ if (lo_pc <= load_addr && load_addr < hi_pc)
+ return true;
+
+ offset += m_data.GetU16(&offset);
+ }
+ }
+ }
+ return false;
+}
+bool
+DWARFExpression::Evaluate
+(
+ ExecutionContextScope *exe_scope,
+ clang::ASTContext *ast_context,
+ const Value* initial_value_ptr,
+ Value& result,
+ Error *error_ptr
+) const
+{
+ ExecutionContext exe_ctx (exe_scope);
+ return Evaluate(&exe_ctx, ast_context, initial_value_ptr, result, error_ptr);
+}
+
+bool
+DWARFExpression::Evaluate
+(
+ ExecutionContext *exe_ctx,
+ clang::ASTContext *ast_context,
+ const Value* initial_value_ptr,
+ Value& result,
+ Error *error_ptr
+) const
+{
+ if (IsLocationList())
+ {
+ uint32_t offset = 0;
+ addr_t pc = exe_ctx->frame->GetPC().GetLoadAddress(exe_ctx->process);
+
+ if (pc == LLDB_INVALID_ADDRESS)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Invalid PC in frame.");
+ return false;
+ }
+
+ addr_t loc_list_base_addr = m_loclist_base_addr.GetLoadAddress(exe_ctx->process);
+
+ if (loc_list_base_addr == LLDB_INVALID_ADDRESS)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Out of scope.");
+ return false;
+ }
+
+ while (m_data.ValidOffset(offset))
+ {
+ // We need to figure out what the value is for the location.
+ addr_t lo_pc = m_data.GetAddress(&offset);
+ addr_t hi_pc = m_data.GetAddress(&offset);
+ if (lo_pc == 0 && hi_pc == 0)
+ {
+ break;
+ }
+ else
+ {
+ lo_pc += loc_list_base_addr;
+ hi_pc += loc_list_base_addr;
+
+ uint16_t length = m_data.GetU16(&offset);
+
+ if (length > 0 && lo_pc <= pc && pc < hi_pc)
+ {
+ return DWARFExpression::Evaluate (exe_ctx, ast_context, m_data, m_expr_locals, m_decl_map, offset, length, m_reg_kind, initial_value_ptr, result, error_ptr);
+ }
+ offset += length;
+ }
+ }
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat("Out of scope.\n", pc);
+ return false;
+ }
+
+ // Not a location list, just a single expression.
+ return DWARFExpression::Evaluate (exe_ctx, ast_context, m_data, m_expr_locals, m_decl_map, 0, m_data.GetByteSize(), m_reg_kind, initial_value_ptr, result, error_ptr);
+}
+
+
+
+bool
+DWARFExpression::Evaluate
+(
+ ExecutionContext *exe_ctx,
+ clang::ASTContext *ast_context,
+ const DataExtractor& opcodes,
+ ClangExpressionVariableList *expr_locals,
+ ClangExpressionDeclMap *decl_map,
+ const uint32_t opcodes_offset,
+ const uint32_t opcodes_length,
+ const uint32_t reg_kind,
+ const Value* initial_value_ptr,
+ Value& result,
+ Error *error_ptr
+)
+{
+ std::vector<Value> stack;
+
+ if (initial_value_ptr)
+ stack.push_back(*initial_value_ptr);
+
+ uint32_t offset = opcodes_offset;
+ const uint32_t end_offset = opcodes_offset + opcodes_length;
+ Value tmp;
+ uint32_t reg_num;
+
+ // Make sure all of the data is available in opcodes.
+ if (!opcodes.ValidOffsetForDataOfSize(opcodes_offset, opcodes_length))
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString ("Invalid offset and/or length for opcodes buffer.");
+ return false;
+ }
+ Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS);
+
+
+ while (opcodes.ValidOffset(offset) && offset < end_offset)
+ {
+ const uint32_t op_offset = offset;
+ const uint8_t op = opcodes.GetU8(&offset);
+
+ if (log)
+ {
+ log->Printf("\n");
+ size_t count = stack.size();
+ for (size_t i=0; i<count; ++i)
+ {
+ StreamString new_value;
+ new_value.Printf("[%zu]", i);
+ stack[i].Dump(&new_value);
+ log->Printf("%s", new_value.GetData());
+ }
+ log->Printf("0x%8.8x: %s", op_offset, DW_OP_value_to_name(op));
+ }
+ switch (op)
+ {
+ //----------------------------------------------------------------------
+ // The DW_OP_addr operation has a single operand that encodes a machine
+ // address and whose size is the size of an address on the target machine.
+ //----------------------------------------------------------------------
+ case DW_OP_addr:
+ stack.push_back(opcodes.GetAddress(&offset));
+ stack.back().SetValueType (Value::eValueTypeFileAddress);
+ break;
+
+ //----------------------------------------------------------------------
+ // The DW_OP_addr_sect_offset4 is used for any location expressions in
+ // shared libraries that have a location like:
+ // DW_OP_addr(0x1000)
+ // If this address resides in a shared library, then this virtual
+ // address won't make sense when it is evaluated in the context of a
+ // running process where shared libraries have been slid. To account for
+ // this, this new address type where we can store the section pointer
+ // and a 4 byte offset.
+ //----------------------------------------------------------------------
+// case DW_OP_addr_sect_offset4:
+// {
+// result_type = eResultTypeFileAddress;
+// lldb::Section *sect = (lldb::Section *)opcodes.GetMaxU64(&offset, sizeof(void *));
+// lldb::addr_t sect_offset = opcodes.GetU32(&offset);
+//
+// Address so_addr (sect, sect_offset);
+// lldb::addr_t load_addr = so_addr.GetLoadAddress();
+// if (load_addr != LLDB_INVALID_ADDRESS)
+// {
+// // We successfully resolve a file address to a load
+// // address.
+// stack.push_back(load_addr);
+// break;
+// }
+// else
+// {
+// // We were able
+// if (error_ptr)
+// error_ptr->SetErrorStringWithFormat ("Section %s in %s is not currently loaded.\n", sect->GetName().AsCString(), sect->GetModule()->GetFileSpec().GetFilename().AsCString());
+// return false;
+// }
+// }
+// break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_deref
+ // OPERANDS: none
+ // DESCRIPTION: Pops the top stack entry and treats it as an address.
+ // The value retrieved from that address is pushed. The size of the
+ // data retrieved from the dereferenced address is the size of an
+ // address on the target machine.
+ //----------------------------------------------------------------------
+ case DW_OP_deref:
+ {
+ Value::ValueType value_type = stack.back().GetValueType();
+ switch (value_type)
+ {
+ case Value::eValueTypeHostAddress:
+ {
+ void *src = (void *)stack.back().GetScalar().ULongLong();
+ intptr_t ptr;
+ ::memcpy (&ptr, src, sizeof(void *));
+ stack.back().GetScalar() = ptr;
+ stack.back().ClearContext();
+ }
+ break;
+ case Value::eValueTypeLoadAddress:
+ if (exe_ctx)
+ {
+ if (exe_ctx->process)
+ {
+ lldb::addr_t pointer_addr = stack.back().GetScalar().ULongLong(LLDB_INVALID_ADDRESS);
+ uint8_t addr_bytes[sizeof(lldb::addr_t)];
+ uint32_t addr_size = exe_ctx->process->GetAddressByteSize();
+ Error error;
+ if (exe_ctx->process->ReadMemory(pointer_addr, &addr_bytes, addr_size, error) == addr_size)
+ {
+ DataExtractor addr_data(addr_bytes, sizeof(addr_bytes), exe_ctx->process->GetByteOrder(), addr_size);
+ uint32_t addr_data_offset = 0;
+ stack.back().GetScalar() = addr_data.GetPointer(&addr_data_offset);
+ stack.back().ClearContext();
+ }
+ else
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("Failed to dereference pointer from 0x%llx for DW_OP_deref: %s\n",
+ pointer_addr,
+ error.AsCString());
+ return false;
+ }
+ }
+ else
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("NULL process for DW_OP_deref.\n");
+ return false;
+ }
+ }
+ else
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("NULL execution context for DW_OP_deref.\n");
+ return false;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_deref_size
+ // OPERANDS: 1
+ // 1 - uint8_t that specifies the size of the data to dereference.
+ // DESCRIPTION: Behaves like the DW_OP_deref operation: it pops the top
+ // stack entry and treats it as an address. The value retrieved from that
+ // address is pushed. In the DW_OP_deref_size operation, however, the
+ // size in bytes of the data retrieved from the dereferenced address is
+ // specified by the single operand. This operand is a 1-byte unsigned
+ // integral constant whose value may not be larger than the size of an
+ // address on the target machine. The data retrieved is zero extended
+ // to the size of an address on the target machine before being pushed
+ // on the expression stack.
+ //----------------------------------------------------------------------
+ case DW_OP_deref_size:
+ if (error_ptr)
+ error_ptr->SetErrorString("Unimplemented opcode: DW_OP_deref_size.");
+ return false;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_xderef_size
+ // OPERANDS: 1
+ // 1 - uint8_t that specifies the size of the data to dereference.
+ // DESCRIPTION: Behaves like the DW_OP_xderef operation: the entry at
+ // the top of the stack is treated as an address. The second stack
+ // entry is treated as an “address space identifier” for those
+ // architectures that support multiple address spaces. The top two
+ // stack elements are popped, a data item is retrieved through an
+ // implementation-defined address calculation and pushed as the new
+ // stack top. In the DW_OP_xderef_size operation, however, the size in
+ // bytes of the data retrieved from the dereferenced address is
+ // specified by the single operand. This operand is a 1-byte unsigned
+ // integral constant whose value may not be larger than the size of an
+ // address on the target machine. The data retrieved is zero extended
+ // to the size of an address on the target machine before being pushed
+ // on the expression stack.
+ //----------------------------------------------------------------------
+ case DW_OP_xderef_size:
+ if (error_ptr)
+ error_ptr->SetErrorString("Unimplemented opcode: DW_OP_xderef_size.");
+ return false;
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_xderef
+ // OPERANDS: none
+ // DESCRIPTION: Provides an extended dereference mechanism. The entry at
+ // the top of the stack is treated as an address. The second stack entry
+ // is treated as an "address space identifier" for those architectures
+ // that support multiple address spaces. The top two stack elements are
+ // popped, a data item is retrieved through an implementation-defined
+ // address calculation and pushed as the new stack top. The size of the
+ // data retrieved from the dereferenced address is the size of an address
+ // on the target machine.
+ //----------------------------------------------------------------------
+ case DW_OP_xderef:
+ if (error_ptr)
+ error_ptr->SetErrorString("Unimplemented opcode: DW_OP_xderef.");
+ return false;
+
+ //----------------------------------------------------------------------
+ // All DW_OP_constXXX opcodes have a single operand as noted below:
+ //
+ // Opcode Operand 1
+ // --------------- ----------------------------------------------------
+ // DW_OP_const1u 1-byte unsigned integer constant
+ // DW_OP_const1s 1-byte signed integer constant
+ // DW_OP_const2u 2-byte unsigned integer constant
+ // DW_OP_const2s 2-byte signed integer constant
+ // DW_OP_const4u 4-byte unsigned integer constant
+ // DW_OP_const4s 4-byte signed integer constant
+ // DW_OP_const8u 8-byte unsigned integer constant
+ // DW_OP_const8s 8-byte signed integer constant
+ // DW_OP_constu unsigned LEB128 integer constant
+ // DW_OP_consts signed LEB128 integer constant
+ //----------------------------------------------------------------------
+ case DW_OP_const1u : stack.push_back(( uint8_t)opcodes.GetU8(&offset)); break;
+ case DW_OP_const1s : stack.push_back(( int8_t)opcodes.GetU8(&offset)); break;
+ case DW_OP_const2u : stack.push_back((uint16_t)opcodes.GetU16(&offset)); break;
+ case DW_OP_const2s : stack.push_back(( int16_t)opcodes.GetU16(&offset)); break;
+ case DW_OP_const4u : stack.push_back((uint32_t)opcodes.GetU32(&offset)); break;
+ case DW_OP_const4s : stack.push_back(( int32_t)opcodes.GetU32(&offset)); break;
+ case DW_OP_const8u : stack.push_back((uint64_t)opcodes.GetU64(&offset)); break;
+ case DW_OP_const8s : stack.push_back(( int64_t)opcodes.GetU64(&offset)); break;
+ case DW_OP_constu : stack.push_back(opcodes.GetULEB128(&offset)); break;
+ case DW_OP_consts : stack.push_back(opcodes.GetSLEB128(&offset)); break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_dup
+ // OPERANDS: none
+ // DESCRIPTION: duplicates the value at the top of the stack
+ //----------------------------------------------------------------------
+ case DW_OP_dup:
+ if (stack.empty())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack empty for DW_OP_dup.");
+ return false;
+ }
+ else
+ stack.push_back(stack.back());
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_drop
+ // OPERANDS: none
+ // DESCRIPTION: pops the value at the top of the stack
+ //----------------------------------------------------------------------
+ case DW_OP_drop:
+ if (stack.empty())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack empty for DW_OP_drop.");
+ return false;
+ }
+ else
+ stack.pop_back();
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_over
+ // OPERANDS: none
+ // DESCRIPTION: Duplicates the entry currently second in the stack at
+ // the top of the stack.
+ //----------------------------------------------------------------------
+ case DW_OP_over:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_over.");
+ return false;
+ }
+ else
+ stack.push_back(stack[stack.size() - 2]);
+ break;
+
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_pick
+ // OPERANDS: uint8_t index into the current stack
+ // DESCRIPTION: The stack entry with the specified index (0 through 255,
+ // inclusive) is pushed on the stack
+ //----------------------------------------------------------------------
+ case DW_OP_pick:
+ {
+ uint8_t pick_idx = opcodes.GetU8(&offset);
+ if (pick_idx < stack.size())
+ stack.push_back(stack[pick_idx]);
+ else
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat("Index %u out of range for DW_OP_pick.\n", pick_idx);
+ return false;
+ }
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_swap
+ // OPERANDS: none
+ // DESCRIPTION: swaps the top two stack entries. The entry at the top
+ // of the stack becomes the second stack entry, and the second entry
+ // becomes the top of the stack
+ //----------------------------------------------------------------------
+ case DW_OP_swap:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_swap.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.back() = stack[stack.size() - 2];
+ stack[stack.size() - 2] = tmp;
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_rot
+ // OPERANDS: none
+ // DESCRIPTION: Rotates the first three stack entries. The entry at
+ // the top of the stack becomes the third stack entry, the second
+ // entry becomes the top of the stack, and the third entry becomes
+ // the second entry.
+ //----------------------------------------------------------------------
+ case DW_OP_rot:
+ if (stack.size() < 3)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 3 items for DW_OP_rot.");
+ return false;
+ }
+ else
+ {
+ size_t last_idx = stack.size() - 1;
+ Value old_top = stack[last_idx];
+ stack[last_idx] = stack[last_idx - 1];
+ stack[last_idx - 1] = stack[last_idx - 2];
+ stack[last_idx - 2] = old_top;
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_abs
+ // OPERANDS: none
+ // DESCRIPTION: pops the top stack entry, interprets it as a signed
+ // value and pushes its absolute value. If the absolute value can not be
+ // represented, the result is undefined.
+ //----------------------------------------------------------------------
+ case DW_OP_abs:
+ if (stack.empty())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 1 item for DW_OP_abs.");
+ return false;
+ }
+ else if (stack.back().ResolveValue(exe_ctx, ast_context).AbsoluteValue() == false)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Failed to take the absolute value of the first stack item.");
+ return false;
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_and
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack values, performs a bitwise and
+ // operation on the two, and pushes the result.
+ //----------------------------------------------------------------------
+ case DW_OP_and:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_and.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) = stack.back().ResolveValue(exe_ctx, ast_context) & tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_div
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack values, divides the former second
+ // entry by the former top of the stack using signed division, and
+ // pushes the result.
+ //----------------------------------------------------------------------
+ case DW_OP_div:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_div.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ if (tmp.ResolveValue(exe_ctx, ast_context).IsZero())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Divide by zero.");
+ return false;
+ }
+ else
+ {
+ stack.pop_back();
+ stack.back() = stack.back().ResolveValue(exe_ctx, ast_context) / tmp.ResolveValue(exe_ctx, ast_context);
+ if (!stack.back().ResolveValue(exe_ctx, ast_context).IsValid())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Divide failed.");
+ return false;
+ }
+ }
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_minus
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack values, subtracts the former top
+ // of the stack from the former second entry, and pushes the result.
+ //----------------------------------------------------------------------
+ case DW_OP_minus:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_minus.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) = stack.back().ResolveValue(exe_ctx, ast_context) - tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_mod
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack values and pushes the result of
+ // the calculation: former second stack entry modulo the former top of
+ // the stack.
+ //----------------------------------------------------------------------
+ case DW_OP_mod:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_mod.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) = stack.back().ResolveValue(exe_ctx, ast_context) % tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_mul
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack entries, multiplies them
+ // together, and pushes the result.
+ //----------------------------------------------------------------------
+ case DW_OP_mul:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_mul.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) = stack.back().ResolveValue(exe_ctx, ast_context) * tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_neg
+ // OPERANDS: none
+ // DESCRIPTION: pops the top stack entry, and pushes its negation.
+ //----------------------------------------------------------------------
+ case DW_OP_neg:
+ if (stack.empty())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 1 item for DW_OP_neg.");
+ return false;
+ }
+ else
+ {
+ if (stack.back().ResolveValue(exe_ctx, ast_context).UnaryNegate() == false)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Unary negate failed.");
+ return false;
+ }
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_not
+ // OPERANDS: none
+ // DESCRIPTION: pops the top stack entry, and pushes its bitwise
+ // complement
+ //----------------------------------------------------------------------
+ case DW_OP_not:
+ if (stack.empty())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 1 item for DW_OP_not.");
+ return false;
+ }
+ else
+ {
+ if (stack.back().ResolveValue(exe_ctx, ast_context).OnesComplement() == false)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Logical NOT failed.");
+ return false;
+ }
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_or
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack entries, performs a bitwise or
+ // operation on the two, and pushes the result.
+ //----------------------------------------------------------------------
+ case DW_OP_or:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_or.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) = stack.back().ResolveValue(exe_ctx, ast_context) | tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_plus
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack entries, adds them together, and
+ // pushes the result.
+ //----------------------------------------------------------------------
+ case DW_OP_plus:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_plus.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) = stack.back().ResolveValue(exe_ctx, ast_context) + tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_plus_uconst
+ // OPERANDS: none
+ // DESCRIPTION: pops the top stack entry, adds it to the unsigned LEB128
+ // constant operand and pushes the result.
+ //----------------------------------------------------------------------
+ case DW_OP_plus_uconst:
+ if (stack.empty())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 1 item for DW_OP_plus_uconst.");
+ return false;
+ }
+ else
+ {
+ uint32_t uconst_value = opcodes.GetULEB128(&offset);
+ // Implicit conversion from a UINT to a Scalar...
+ stack.back().ResolveValue(exe_ctx, ast_context) += uconst_value;
+ if (!stack.back().ResolveValue(exe_ctx, ast_context).IsValid())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("DW_OP_plus_uconst failed.");
+ return false;
+ }
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_shl
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack entries, shifts the former
+ // second entry left by the number of bits specified by the former top
+ // of the stack, and pushes the result.
+ //----------------------------------------------------------------------
+ case DW_OP_shl:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_shl.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) <<= tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_shr
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack entries, shifts the former second
+ // entry right logically (filling with zero bits) by the number of bits
+ // specified by the former top of the stack, and pushes the result.
+ //----------------------------------------------------------------------
+ case DW_OP_shr:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_shr.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ if (stack.back().ResolveValue(exe_ctx, ast_context).ShiftRightLogical(tmp.ResolveValue(exe_ctx, ast_context)) == false)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("DW_OP_shr failed.");
+ return false;
+ }
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_shra
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack entries, shifts the former second
+ // entry right arithmetically (divide the magnitude by 2, keep the same
+ // sign for the result) by the number of bits specified by the former
+ // top of the stack, and pushes the result.
+ //----------------------------------------------------------------------
+ case DW_OP_shra:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_shra.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) >>= tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_xor
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack entries, performs the bitwise
+ // exclusive-or operation on the two, and pushes the result.
+ //----------------------------------------------------------------------
+ case DW_OP_xor:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_xor.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) = stack.back().ResolveValue(exe_ctx, ast_context) ^ tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_skip
+ // OPERANDS: int16_t
+ // DESCRIPTION: An unconditional branch. Its single operand is a 2-byte
+ // signed integer constant. The 2-byte constant is the number of bytes
+ // of the DWARF expression to skip forward or backward from the current
+ // operation, beginning after the 2-byte constant.
+ //----------------------------------------------------------------------
+ case DW_OP_skip:
+ {
+ int16_t skip_offset = (int16_t)opcodes.GetU16(&offset);
+ uint32_t new_offset = offset + skip_offset;
+ if (new_offset >= opcodes_offset && new_offset < end_offset)
+ offset = new_offset;
+ else
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Invalid opcode offset in DW_OP_skip.");
+ return false;
+ }
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_bra
+ // OPERANDS: int16_t
+ // DESCRIPTION: A conditional branch. Its single operand is a 2-byte
+ // signed integer constant. This operation pops the top of stack. If
+ // the value popped is not the constant 0, the 2-byte constant operand
+ // is the number of bytes of the DWARF expression to skip forward or
+ // backward from the current operation, beginning after the 2-byte
+ // constant.
+ //----------------------------------------------------------------------
+ case DW_OP_bra:
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ int16_t bra_offset = (int16_t)opcodes.GetU16(&offset);
+ Scalar zero(0);
+ if (tmp.ResolveValue(exe_ctx, ast_context) != zero)
+ {
+ uint32_t new_offset = offset + bra_offset;
+ if (new_offset >= opcodes_offset && new_offset < end_offset)
+ offset = new_offset;
+ else
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Invalid opcode offset in DW_OP_bra.");
+ return false;
+ }
+ }
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_eq
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack values, compares using the
+ // equals (==) operator.
+ // STACK RESULT: push the constant value 1 onto the stack if the result
+ // of the operation is true or the constant value 0 if the result of the
+ // operation is false.
+ //----------------------------------------------------------------------
+ case DW_OP_eq:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_eq.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) = stack.back().ResolveValue(exe_ctx, ast_context) == tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_ge
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack values, compares using the
+ // greater than or equal to (>=) operator.
+ // STACK RESULT: push the constant value 1 onto the stack if the result
+ // of the operation is true or the constant value 0 if the result of the
+ // operation is false.
+ //----------------------------------------------------------------------
+ case DW_OP_ge:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_ge.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) = stack.back().ResolveValue(exe_ctx, ast_context) >= tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_gt
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack values, compares using the
+ // greater than (>) operator.
+ // STACK RESULT: push the constant value 1 onto the stack if the result
+ // of the operation is true or the constant value 0 if the result of the
+ // operation is false.
+ //----------------------------------------------------------------------
+ case DW_OP_gt:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_gt.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) = stack.back().ResolveValue(exe_ctx, ast_context) > tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_le
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack values, compares using the
+ // less than or equal to (<=) operator.
+ // STACK RESULT: push the constant value 1 onto the stack if the result
+ // of the operation is true or the constant value 0 if the result of the
+ // operation is false.
+ //----------------------------------------------------------------------
+ case DW_OP_le:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_le.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) = stack.back().ResolveValue(exe_ctx, ast_context) <= tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_lt
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack values, compares using the
+ // less than (<) operator.
+ // STACK RESULT: push the constant value 1 onto the stack if the result
+ // of the operation is true or the constant value 0 if the result of the
+ // operation is false.
+ //----------------------------------------------------------------------
+ case DW_OP_lt:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_lt.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) = stack.back().ResolveValue(exe_ctx, ast_context) < tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_ne
+ // OPERANDS: none
+ // DESCRIPTION: pops the top two stack values, compares using the
+ // not equal (!=) operator.
+ // STACK RESULT: push the constant value 1 onto the stack if the result
+ // of the operation is true or the constant value 0 if the result of the
+ // operation is false.
+ //----------------------------------------------------------------------
+ case DW_OP_ne:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_ne.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ stack.back().ResolveValue(exe_ctx, ast_context) = stack.back().ResolveValue(exe_ctx, ast_context) != tmp.ResolveValue(exe_ctx, ast_context);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_litn
+ // OPERANDS: none
+ // DESCRIPTION: encode the unsigned literal values from 0 through 31.
+ // STACK RESULT: push the unsigned literal constant value onto the top
+ // of the stack.
+ //----------------------------------------------------------------------
+ case DW_OP_lit0:
+ case DW_OP_lit1:
+ case DW_OP_lit2:
+ case DW_OP_lit3:
+ case DW_OP_lit4:
+ case DW_OP_lit5:
+ case DW_OP_lit6:
+ case DW_OP_lit7:
+ case DW_OP_lit8:
+ case DW_OP_lit9:
+ case DW_OP_lit10:
+ case DW_OP_lit11:
+ case DW_OP_lit12:
+ case DW_OP_lit13:
+ case DW_OP_lit14:
+ case DW_OP_lit15:
+ case DW_OP_lit16:
+ case DW_OP_lit17:
+ case DW_OP_lit18:
+ case DW_OP_lit19:
+ case DW_OP_lit20:
+ case DW_OP_lit21:
+ case DW_OP_lit22:
+ case DW_OP_lit23:
+ case DW_OP_lit24:
+ case DW_OP_lit25:
+ case DW_OP_lit26:
+ case DW_OP_lit27:
+ case DW_OP_lit28:
+ case DW_OP_lit29:
+ case DW_OP_lit30:
+ case DW_OP_lit31:
+ stack.push_back(op - DW_OP_lit0);
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_regN
+ // OPERANDS: none
+ // DESCRIPTION: Push the value in register n on the top of the stack.
+ //----------------------------------------------------------------------
+ case DW_OP_reg0:
+ case DW_OP_reg1:
+ case DW_OP_reg2:
+ case DW_OP_reg3:
+ case DW_OP_reg4:
+ case DW_OP_reg5:
+ case DW_OP_reg6:
+ case DW_OP_reg7:
+ case DW_OP_reg8:
+ case DW_OP_reg9:
+ case DW_OP_reg10:
+ case DW_OP_reg11:
+ case DW_OP_reg12:
+ case DW_OP_reg13:
+ case DW_OP_reg14:
+ case DW_OP_reg15:
+ case DW_OP_reg16:
+ case DW_OP_reg17:
+ case DW_OP_reg18:
+ case DW_OP_reg19:
+ case DW_OP_reg20:
+ case DW_OP_reg21:
+ case DW_OP_reg22:
+ case DW_OP_reg23:
+ case DW_OP_reg24:
+ case DW_OP_reg25:
+ case DW_OP_reg26:
+ case DW_OP_reg27:
+ case DW_OP_reg28:
+ case DW_OP_reg29:
+ case DW_OP_reg30:
+ case DW_OP_reg31:
+ {
+ reg_num = op - DW_OP_reg0;
+
+ if (ReadRegisterValueAsScalar (exe_ctx, reg_kind, reg_num, error_ptr, tmp))
+ stack.push_back(tmp);
+ else
+ return false;
+ }
+ break;
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_regx
+ // OPERANDS:
+ // ULEB128 literal operand that encodes the register.
+ // DESCRIPTION: Push the value in register on the top of the stack.
+ //----------------------------------------------------------------------
+ case DW_OP_regx:
+ {
+ reg_num = opcodes.GetULEB128(&offset);
+ if (ReadRegisterValueAsScalar (exe_ctx, reg_kind, reg_num, error_ptr, tmp))
+ stack.push_back(tmp);
+ else
+ return false;
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_bregN
+ // OPERANDS:
+ // SLEB128 offset from register N
+ // DESCRIPTION: Value is in memory at the address specified by register
+ // N plus an offset.
+ //----------------------------------------------------------------------
+ case DW_OP_breg0:
+ case DW_OP_breg1:
+ case DW_OP_breg2:
+ case DW_OP_breg3:
+ case DW_OP_breg4:
+ case DW_OP_breg5:
+ case DW_OP_breg6:
+ case DW_OP_breg7:
+ case DW_OP_breg8:
+ case DW_OP_breg9:
+ case DW_OP_breg10:
+ case DW_OP_breg11:
+ case DW_OP_breg12:
+ case DW_OP_breg13:
+ case DW_OP_breg14:
+ case DW_OP_breg15:
+ case DW_OP_breg16:
+ case DW_OP_breg17:
+ case DW_OP_breg18:
+ case DW_OP_breg19:
+ case DW_OP_breg20:
+ case DW_OP_breg21:
+ case DW_OP_breg22:
+ case DW_OP_breg23:
+ case DW_OP_breg24:
+ case DW_OP_breg25:
+ case DW_OP_breg26:
+ case DW_OP_breg27:
+ case DW_OP_breg28:
+ case DW_OP_breg29:
+ case DW_OP_breg30:
+ case DW_OP_breg31:
+ {
+ reg_num = op - DW_OP_breg0;
+
+ if (ReadRegisterValueAsScalar (exe_ctx, reg_kind, reg_num, error_ptr, tmp))
+ {
+ int64_t breg_offset = opcodes.GetSLEB128(&offset);
+ tmp.ResolveValue(exe_ctx, ast_context) += (uint64_t)breg_offset;
+ stack.push_back(tmp);
+ stack.back().SetValueType (Value::eValueTypeLoadAddress);
+ }
+ else
+ return false;
+ }
+ break;
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_bregx
+ // OPERANDS: 2
+ // ULEB128 literal operand that encodes the register.
+ // SLEB128 offset from register N
+ // DESCRIPTION: Value is in memory at the address specified by register
+ // N plus an offset.
+ //----------------------------------------------------------------------
+ case DW_OP_bregx:
+ {
+ reg_num = opcodes.GetULEB128(&offset);
+
+ if (ReadRegisterValueAsScalar (exe_ctx, reg_kind, reg_num, error_ptr, tmp))
+ {
+ int64_t breg_offset = opcodes.GetSLEB128(&offset);
+ tmp.ResolveValue(exe_ctx, ast_context) += (uint64_t)breg_offset;
+ stack.push_back(tmp);
+ stack.back().SetValueType (Value::eValueTypeLoadAddress);
+ }
+ else
+ return false;
+ }
+ break;
+
+ case DW_OP_fbreg:
+ if (exe_ctx && exe_ctx->frame)
+ {
+ Scalar value;
+ if (exe_ctx->frame->GetFrameBaseValue(value, error_ptr))
+ {
+ int64_t fbreg_offset = opcodes.GetSLEB128(&offset);
+ value += fbreg_offset;
+ stack.push_back(value);
+ stack.back().SetValueType (Value::eValueTypeLoadAddress);
+ }
+ else
+ return false;
+ }
+ else
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString ("Invalid stack frame in context for DW_OP_fbreg opcode.");
+ return false;
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_nop
+ // OPERANDS: none
+ // DESCRIPTION: A place holder. It has no effect on the location stack
+ // or any of its values.
+ //----------------------------------------------------------------------
+ case DW_OP_nop:
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_piece
+ // OPERANDS: 1
+ // ULEB128: byte size of the piece
+ // DESCRIPTION: The operand describes the size in bytes of the piece of
+ // the object referenced by the DWARF expression whose result is at the
+ // top of the stack. If the piece is located in a register, but does not
+ // occupy the entire register, the placement of the piece within that
+ // register is defined by the ABI.
+ //
+ // Many compilers store a single variable in sets of registers, or store
+ // a variable partially in memory and partially in registers.
+ // DW_OP_piece provides a way of describing how large a part of a
+ // variable a particular DWARF expression refers to.
+ //----------------------------------------------------------------------
+ case DW_OP_piece:
+ if (error_ptr)
+ error_ptr->SetErrorString ("Unimplemented opcode DW_OP_piece.");
+ return false;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_push_object_address
+ // OPERANDS: none
+ // DESCRIPTION: Pushes the address of the object currently being
+ // evaluated as part of evaluation of a user presented expression.
+ // This object may correspond to an independent variable described by
+ // its own DIE or it may be a component of an array, structure, or class
+ // whose address has been dynamically determined by an earlier step
+ // during user expression evaluation.
+ //----------------------------------------------------------------------
+ case DW_OP_push_object_address:
+ if (error_ptr)
+ error_ptr->SetErrorString ("Unimplemented opcode DW_OP_push_object_address.");
+ return false;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_call2
+ // OPERANDS:
+ // uint16_t compile unit relative offset of a DIE
+ // DESCRIPTION: Performs subroutine calls during evaluation
+ // of a DWARF expression. The operand is the 2-byte unsigned offset
+ // of a debugging information entry in the current compilation unit.
+ //
+ // Operand interpretation is exactly like that for DW_FORM_ref2.
+ //
+ // This operation transfers control of DWARF expression evaluation
+ // to the DW_AT_location attribute of the referenced DIE. If there is
+ // no such attribute, then there is no effect. Execution of the DWARF
+ // expression of a DW_AT_location attribute may add to and/or remove from
+ // values on the stack. Execution returns to the point following the call
+ // when the end of the attribute is reached. Values on the stack at the
+ // time of the call may be used as parameters by the called expression
+ // and values left on the stack by the called expression may be used as
+ // return values by prior agreement between the calling and called
+ // expressions.
+ //----------------------------------------------------------------------
+ case DW_OP_call2:
+ if (error_ptr)
+ error_ptr->SetErrorString ("Unimplemented opcode DW_OP_call2.");
+ return false;
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_call4
+ // OPERANDS: 1
+ // uint32_t compile unit relative offset of a DIE
+ // DESCRIPTION: Performs a subroutine call during evaluation of a DWARF
+ // expression. For DW_OP_call4, the operand is a 4-byte unsigned offset
+ // of a debugging information entry in the current compilation unit.
+ //
+ // Operand interpretation DW_OP_call4 is exactly like that for
+ // DW_FORM_ref4.
+ //
+ // This operation transfers control of DWARF expression evaluation
+ // to the DW_AT_location attribute of the referenced DIE. If there is
+ // no such attribute, then there is no effect. Execution of the DWARF
+ // expression of a DW_AT_location attribute may add to and/or remove from
+ // values on the stack. Execution returns to the point following the call
+ // when the end of the attribute is reached. Values on the stack at the
+ // time of the call may be used as parameters by the called expression
+ // and values left on the stack by the called expression may be used as
+ // return values by prior agreement between the calling and called
+ // expressions.
+ //----------------------------------------------------------------------
+ case DW_OP_call4:
+ if (error_ptr)
+ error_ptr->SetErrorString ("Unimplemented opcode DW_OP_call4.");
+ return false;
+
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_call_ref
+ // OPERANDS:
+ // uint32_t absolute DIE offset for 32-bit DWARF or a uint64_t
+ // absolute DIE offset for 64 bit DWARF.
+ // DESCRIPTION: Performs a subroutine call during evaluation of a DWARF
+ // expression. Takes a single operand. In the 32-bit DWARF format, the
+ // operand is a 4-byte unsigned value; in the 64-bit DWARF format, it
+ // is an 8-byte unsigned value. The operand is used as the offset of a
+ // debugging information entry in a .debug_info section which may be
+ // contained in a shared object for executable other than that
+ // containing the operator. For references from one shared object or
+ // executable to another, the relocation must be performed by the
+ // consumer.
+ //
+ // Operand interpretation of DW_OP_call_ref is exactly like that for
+ // DW_FORM_ref_addr.
+ //
+ // This operation transfers control of DWARF expression evaluation
+ // to the DW_AT_location attribute of the referenced DIE. If there is
+ // no such attribute, then there is no effect. Execution of the DWARF
+ // expression of a DW_AT_location attribute may add to and/or remove from
+ // values on the stack. Execution returns to the point following the call
+ // when the end of the attribute is reached. Values on the stack at the
+ // time of the call may be used as parameters by the called expression
+ // and values left on the stack by the called expression may be used as
+ // return values by prior agreement between the calling and called
+ // expressions.
+ //----------------------------------------------------------------------
+ case DW_OP_call_ref:
+ if (error_ptr)
+ error_ptr->SetErrorString ("Unimplemented opcode DW_OP_call_ref.");
+ return false;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_APPLE_array_ref
+ // OPERANDS: none
+ // DESCRIPTION: Pops a value off the stack and uses it as the array
+ // index. Pops a second value off the stack and uses it as the array
+ // itself. Pushes a value onto the stack representing the element of
+ // the array specified by the index.
+ //----------------------------------------------------------------------
+ case DW_OP_APPLE_array_ref:
+ {
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_APPLE_array_ref.");
+ return false;
+ }
+
+ Value index_val = stack.back();
+ stack.pop_back();
+ Value array_val = stack.back();
+ stack.pop_back();
+
+ Scalar &index_scalar = index_val.ResolveValue(exe_ctx, ast_context);
+ int64_t index = index_scalar.SLongLong(LONG_LONG_MAX);
+
+ if (index == LONG_LONG_MAX)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Invalid array index.");
+ return false;
+ }
+
+ if (array_val.GetContextType() != Value::eContextTypeOpaqueClangQualType)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Arrays without Clang types are unhandled at this time.");
+ return false;
+ }
+
+ if (array_val.GetValueType() != Value::eValueTypeLoadAddress &&
+ array_val.GetValueType() != Value::eValueTypeHostAddress)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Array must be stored in memory.");
+ return false;
+ }
+
+ void *array_type = array_val.GetOpaqueClangQualType();
+
+ void *member_type;
+ uint64_t size = 0;
+
+ if ((!ClangASTContext::IsPointerType(array_type, &member_type)) &&
+ (!ClangASTContext::IsArrayType(array_type, &member_type, &size)))
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Array reference from something that is neither a pointer nor an array.");
+ return false;
+ }
+
+ if (size && (index >= size || index < 0))
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat("Out of bounds array access. %lld is not in [0, %llu]", index, size);
+ return false;
+ }
+
+ uint64_t member_bit_size = ClangASTContext::GetTypeBitSize(ast_context, member_type);
+ uint64_t member_bit_align = ClangASTContext::GetTypeBitAlign(ast_context, member_type);
+ uint64_t member_bit_incr = ((member_bit_size + member_bit_align - 1) / member_bit_align) * member_bit_align;
+ if (member_bit_incr % 8)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat("Array increment is not byte aligned", index, size);
+ return false;
+ }
+ int64_t member_offset = (int64_t)(member_bit_incr / 8) * index;
+
+ Value member;
+
+ member.SetContext(Value::eContextTypeOpaqueClangQualType, member_type);
+ member.SetValueType(array_val.GetValueType());
+
+ addr_t array_base = (addr_t)array_val.GetScalar().ULongLong(LLDB_INVALID_ADDRESS);
+ addr_t member_loc = array_base + member_offset;
+ member.GetScalar() = (uint64_t)member_loc;
+
+ stack.push_back(member);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_APPLE_uninit
+ // OPERANDS: none
+ // DESCRIPTION: Lets us know that the value is currently not initialized
+ //----------------------------------------------------------------------
+ case DW_OP_APPLE_uninit:
+ //return eResultTypeErrorUninitialized;
+ break; // Ignore this as we have seen cases where this value is incorrectly added
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_APPLE_assign
+ // OPERANDS: none
+ // DESCRIPTION: Pops a value off of the stack and assigns it to the next
+ // item on the stack which must be something assignable (inferior
+ // Variable, inferior Type with address, inferior register, or
+ // expression local variable.
+ //----------------------------------------------------------------------
+ case DW_OP_APPLE_assign:
+ if (stack.size() < 2)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 2 items for DW_OP_APPLE_assign.");
+ return false;
+ }
+ else
+ {
+ tmp = stack.back();
+ stack.pop_back();
+ Value::ContextType context_type = stack.back().GetContextType();
+ StreamString new_value(Stream::eBinary, 4, eByteOrderHost);
+ switch (context_type)
+ {
+ case Value::eContextTypeOpaqueClangQualType:
+ {
+ void *clang_type = stack.back().GetOpaqueClangQualType();
+
+ if (ClangASTContext::IsAggregateType (clang_type))
+ {
+ Value::ValueType source_value_type = tmp.GetValueType();
+ Value::ValueType target_value_type = stack.back().GetValueType();
+
+ addr_t source_addr = (addr_t)tmp.GetScalar().ULongLong();
+ addr_t target_addr = (addr_t)stack.back().GetScalar().ULongLong();
+
+ size_t byte_size = (ClangASTContext::GetTypeBitSize(ast_context, clang_type) + 7) / 8;
+
+ switch (source_value_type)
+ {
+ case Value::eValueTypeLoadAddress:
+ switch (target_value_type)
+ {
+ case Value::eValueTypeLoadAddress:
+ {
+ DataBufferHeap data;
+ data.SetByteSize(byte_size);
+
+ Error error;
+ if (exe_ctx->process->ReadMemory (source_addr, data.GetBytes(), byte_size, error) != byte_size)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("Couldn't read a composite type from the target: %s", error.AsCString());
+ return false;
+ }
+
+ if (exe_ctx->process->WriteMemory (target_addr, data.GetBytes(), byte_size, error) != byte_size)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("Couldn't write a composite type to the target: %s", error.AsCString());
+ return false;
+ }
+ }
+ break;
+ case Value::eValueTypeHostAddress:
+ if (exe_ctx->process->GetByteOrder() != Host::GetByteOrder())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("Copy of composite types between incompatible byte orders is unimplemented");
+ return false;
+ }
+ else
+ {
+ Error error;
+ if (exe_ctx->process->ReadMemory (source_addr, (uint8_t*)target_addr, byte_size, error) != byte_size)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("Couldn't read a composite type from the target: %s", error.AsCString());
+ return false;
+ }
+ }
+ break;
+ default:
+ return false;
+ }
+ break;
+ case Value::eValueTypeHostAddress:
+ switch (target_value_type)
+ {
+ case Value::eValueTypeLoadAddress:
+ if (exe_ctx->process->GetByteOrder() != Host::GetByteOrder())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("Copy of composite types between incompatible byte orders is unimplemented");
+ return false;
+ }
+ else
+ {
+ Error error;
+ if (exe_ctx->process->WriteMemory (target_addr, (uint8_t*)source_addr, byte_size, error) != byte_size)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("Couldn't write a composite type to the target: %s", error.AsCString());
+ return false;
+ }
+ }
+ case Value::eValueTypeHostAddress:
+ memcpy ((uint8_t*)target_addr, (uint8_t*)source_addr, byte_size);
+ break;
+ default:
+ return false;
+ }
+ }
+ }
+ else
+ {
+ if (!Type::SetValueFromScalar(ast_context,
+ clang_type,
+ tmp.ResolveValue(exe_ctx, ast_context),
+ new_value))
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("Couldn't extract a value from an integral type.\n");
+ return false;
+ }
+
+ Value::ValueType value_type = stack.back().GetValueType();
+
+ switch (value_type)
+ {
+ case Value::eValueTypeLoadAddress:
+ case Value::eValueTypeHostAddress:
+ {
+ lldb::AddressType address_type = (value_type == Value::eValueTypeLoadAddress ? eAddressTypeLoad : eAddressTypeHost);
+ lldb::addr_t addr = stack.back().GetScalar().ULongLong(LLDB_INVALID_ADDRESS);
+ if (!Type::WriteToMemory (exe_ctx,
+ ast_context,
+ clang_type,
+ addr,
+ address_type,
+ new_value))
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("Failed to write value to memory at 0x%llx.\n", addr);
+ return false;
+ }
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+ }
+ break;
+
+ default:
+ if (error_ptr)
+ error_ptr->SetErrorString ("Assign failed.");
+ return false;
+ }
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_APPLE_address_of
+ // OPERANDS: none
+ // DESCRIPTION: Pops a value off of the stack and pushed its address.
+ // The top item on the stack must be a variable, or already be a memory
+ // location.
+ //----------------------------------------------------------------------
+ case DW_OP_APPLE_address_of:
+ if (stack.empty())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 1 item for DW_OP_APPLE_address_of.");
+ return false;
+ }
+ else
+ {
+ Value::ValueType value_type = stack.back().GetValueType();
+ switch (value_type)
+ {
+ default:
+ case Value::eValueTypeScalar: // raw scalar value
+ if (error_ptr)
+ error_ptr->SetErrorString("Top stack item isn't a memory based object.");
+ return false;
+
+ case Value::eValueTypeLoadAddress: // load address value
+ case Value::eValueTypeFileAddress: // file address value
+ case Value::eValueTypeHostAddress: // host address value (for memory in the process that is using liblldb)
+ // Taking the address of an object reduces it to the address
+ // of the value and removes any extra context it had.
+ //stack.back().SetValueType(Value::eValueTypeScalar);
+ stack.back().ClearContext();
+ break;
+ }
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_APPLE_value_of
+ // OPERANDS: none
+ // DESCRIPTION: Pops a value off of the stack and pushed its value.
+ // The top item on the stack must be a variable, expression variable.
+ //----------------------------------------------------------------------
+ case DW_OP_APPLE_value_of:
+ if (stack.empty())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 1 items for DW_OP_APPLE_value_of.");
+ return false;
+ }
+ else if (!stack.back().ValueOf(exe_ctx, ast_context))
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString ("Top stack item isn't a valid candidate for DW_OP_APPLE_value_of.");
+ return false;
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_APPLE_deref_type
+ // OPERANDS: none
+ // DESCRIPTION: gets the value pointed to by the top stack item
+ //----------------------------------------------------------------------
+ case DW_OP_APPLE_deref_type:
+ {
+ if (stack.empty())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 1 items for DW_OP_APPLE_deref_type.");
+ return false;
+ }
+
+ tmp = stack.back();
+ stack.pop_back();
+
+ if (tmp.GetContextType() != Value::eContextTypeOpaqueClangQualType)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Item at top of expression stack must have a Clang type");
+ return false;
+ }
+
+ void *ptr_type = tmp.GetOpaqueClangQualType();
+ void *target_type;
+
+ if (!ClangASTContext::IsPointerType(ptr_type, &target_type))
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Dereferencing a non-pointer type");
+ return false;
+ }
+
+ // TODO do we want all pointers to be dereferenced as load addresses?
+ Value::ValueType value_type = tmp.GetValueType();
+
+ tmp.ResolveValue(exe_ctx, ast_context);
+
+ tmp.SetValueType(value_type);
+ tmp.SetContext(Value::eContextTypeOpaqueClangQualType, target_type);
+
+ stack.push_back(tmp);
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_APPLE_expr_local
+ // OPERANDS: ULEB128
+ // DESCRIPTION: pushes the expression local variable index onto the
+ // stack and set the appropriate context so we know the stack item is
+ // an expression local variable index.
+ //----------------------------------------------------------------------
+ case DW_OP_APPLE_expr_local:
+ {
+ uint32_t idx = opcodes.GetULEB128(&offset);
+ if (expr_locals == NULL)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("DW_OP_APPLE_expr_local(%u) opcode encountered with no local variable list.\n", idx);
+ return false;
+ }
+ Value *expr_local_variable = expr_locals->GetVariableAtIndex(idx);
+ if (expr_local_variable == NULL)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("DW_OP_APPLE_expr_local(%u) with invalid index %u.\n", idx, idx);
+ return false;
+ }
+ Value *proxy = expr_local_variable->CreateProxy();
+ stack.push_back(*proxy);
+ delete proxy;
+ //stack.back().SetContext (Value::eContextTypeOpaqueClangQualType, expr_local_variable->GetOpaqueClangQualType());
+ }
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_APPLE_extern
+ // OPERANDS: ULEB128
+ // DESCRIPTION: pushes a proxy for the extern object index onto the
+ // stack.
+ //----------------------------------------------------------------------
+ case DW_OP_APPLE_extern:
+ {
+ uint32_t idx = opcodes.GetULEB128(&offset);
+ if (!decl_map)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("DW_OP_APPLE_extern(%u) opcode encountered with no decl map.\n", idx);
+ return false;
+ }
+ Value *extern_var = decl_map->GetValueForIndex(idx);
+ if (!extern_var)
+ {
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("DW_OP_APPLE_extern(%u) with invalid index %u.\n", idx, idx);
+ return false;
+ }
+ Value *proxy = extern_var->CreateProxy();
+ stack.push_back(*proxy);
+ delete proxy;
+ }
+ break;
+
+ case DW_OP_APPLE_scalar_cast:
+ if (stack.empty())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 1 item for DW_OP_APPLE_scalar_cast.");
+ return false;
+ }
+ else
+ {
+ // Simple scalar cast
+ if (!stack.back().ResolveValue(exe_ctx, ast_context).Cast((Scalar::Type)opcodes.GetU8(&offset)))
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Cast failed.");
+ return false;
+ }
+ }
+ break;
+
+
+ case DW_OP_APPLE_clang_cast:
+ if (stack.empty())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString("Expression stack needs at least 1 item for DW_OP_APPLE_clang_cast.");
+ return false;
+ }
+ else
+ {
+ void *clang_type = (void *)opcodes.GetMaxU64(&offset, sizeof(void*));
+ stack.back().SetContext (Value::eContextTypeOpaqueClangQualType, clang_type);
+ }
+ break;
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_APPLE_constf
+ // OPERANDS: 1 byte float length, followed by that many bytes containing
+ // the constant float data.
+ // DESCRIPTION: Push a float value onto the expression stack.
+ //----------------------------------------------------------------------
+ case DW_OP_APPLE_constf: // 0xF6 - 1 byte float size, followed by constant float data
+ {
+ uint8_t float_length = opcodes.GetU8(&offset);
+ if (sizeof(float) == float_length)
+ tmp.ResolveValue(exe_ctx, ast_context) = opcodes.GetFloat (&offset);
+ else if (sizeof(double) == float_length)
+ tmp.ResolveValue(exe_ctx, ast_context) = opcodes.GetDouble (&offset);
+ else if (sizeof(long double) == float_length)
+ tmp.ResolveValue(exe_ctx, ast_context) = opcodes.GetLongDouble (&offset);
+ else
+ {
+ StreamString new_value;
+ opcodes.Dump(&new_value, offset, eFormatBytes, 1, float_length, UINT32_MAX, DW_INVALID_ADDRESS, 0, 0);
+
+ if (error_ptr)
+ error_ptr->SetErrorStringWithFormat ("DW_OP_APPLE_constf(<%u> %s) unsupported float size.\n", float_length, new_value.GetData());
+ return false;
+ }
+ tmp.SetValueType(Value::eValueTypeScalar);
+ tmp.ClearContext();
+ stack.push_back(tmp);
+ }
+ break;
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_APPLE_clear
+ // OPERANDS: none
+ // DESCRIPTION: Clears the expression stack.
+ //----------------------------------------------------------------------
+ case DW_OP_APPLE_clear:
+ stack.clear();
+ break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_APPLE_error
+ // OPERANDS: none
+ // DESCRIPTION: Pops a value off of the stack and pushed its value.
+ // The top item on the stack must be a variable, expression variable.
+ //----------------------------------------------------------------------
+ case DW_OP_APPLE_error: // 0xFF - Stops expression evaluation and returns an error (no args)
+ if (error_ptr)
+ error_ptr->SetErrorString ("Generic error.");
+ return false;
+ }
+ }
+
+ if (stack.empty())
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString ("Stack empty after evaluation.");
+ return false;
+ }
+ else if (log)
+ {
+ log->Printf("\n");
+ size_t count = stack.size();
+ for (size_t i=0; i<count; ++i)
+ {
+ StreamString new_value;
+ new_value.Printf("[%zu]", i);
+ stack[i].Dump(&new_value);
+ log->Printf("%s", new_value.GetData());
+ }
+ }
+
+ result = stack.back();
+ return true; // Return true on success
+}
+
diff --git a/source/Expression/RecordingMemoryManager.cpp b/source/Expression/RecordingMemoryManager.cpp
new file mode 100644
index 0000000..9f732b6
--- /dev/null
+++ b/source/Expression/RecordingMemoryManager.cpp
@@ -0,0 +1,131 @@
+//===-- RecordingMemoryManager.cpp ------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#define NO_RTTI
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+#include "lldb/Expression/RecordingMemoryManager.h"
+
+using namespace lldb_private;
+
+RecordingMemoryManager::RecordingMemoryManager () :
+ llvm::JITMemoryManager(),
+ m_default_mm_ap (llvm::JITMemoryManager::CreateDefaultMemManager())
+{
+}
+
+RecordingMemoryManager::~RecordingMemoryManager ()
+{
+}
+
+void
+RecordingMemoryManager::setMemoryWritable ()
+{
+ m_default_mm_ap->setMemoryWritable();
+}
+
+void
+RecordingMemoryManager::setMemoryExecutable ()
+{
+ m_default_mm_ap->setMemoryExecutable();
+}
+
+
+uint8_t *
+RecordingMemoryManager::startFunctionBody(const llvm::Function *F,
+ uintptr_t &ActualSize)
+{
+ uint8_t *return_value = m_default_mm_ap->startFunctionBody(F, ActualSize);
+ return return_value;
+}
+
+uint8_t *
+RecordingMemoryManager::allocateStub(const llvm::GlobalValue* F, unsigned StubSize,
+ unsigned Alignment)
+{
+ uint8_t *return_value = m_default_mm_ap->allocateStub(F, StubSize, Alignment);
+ m_stubs.insert (std::pair<uint8_t *,unsigned>(return_value, StubSize));
+ return return_value;
+}
+
+void
+RecordingMemoryManager::endFunctionBody(const llvm::Function *F, uint8_t *FunctionStart,
+ uint8_t *FunctionEnd)
+{
+ m_default_mm_ap->endFunctionBody(F, FunctionStart, FunctionEnd);
+ m_functions.insert(std::pair<uint8_t *, uint8_t *>(FunctionStart, FunctionEnd));
+}
+
+uint8_t *
+RecordingMemoryManager::allocateSpace(intptr_t Size, unsigned Alignment)
+{
+ uint8_t *return_value = m_default_mm_ap->allocateSpace(Size, Alignment);
+ m_spaceBlocks.insert (std::pair<uint8_t *, intptr_t>(return_value, Size));
+ return return_value;
+}
+
+uint8_t *
+RecordingMemoryManager::allocateGlobal(uintptr_t Size, unsigned Alignment)
+{
+ uint8_t *return_value = m_default_mm_ap->allocateGlobal(Size, Alignment);
+ m_globals.insert (std::pair<uint8_t *, uintptr_t>(return_value, Size));
+ return return_value;
+}
+
+void
+RecordingMemoryManager::deallocateFunctionBody(void *Body)
+{
+ m_default_mm_ap->deallocateFunctionBody(Body);
+}
+
+uint8_t*
+RecordingMemoryManager::startExceptionTable(const llvm::Function* F,
+ uintptr_t &ActualSize)
+{
+ uint8_t *return_value = m_default_mm_ap->startExceptionTable(F, ActualSize);
+ return return_value;
+}
+
+void
+RecordingMemoryManager::endExceptionTable(const llvm::Function *F, uint8_t *TableStart,
+ uint8_t *TableEnd, uint8_t* FrameRegister)
+{
+ m_default_mm_ap->endExceptionTable(F, TableStart, TableEnd, FrameRegister);
+ m_exception_tables.insert (std::pair<uint8_t *, uint8_t *>(TableStart, TableEnd));
+}
+
+void
+RecordingMemoryManager::deallocateExceptionTable(void *ET)
+{
+ m_default_mm_ap->deallocateExceptionTable (ET);
+}
+
+lldb::addr_t
+RecordingMemoryManager::GetRemoteAddressForLocal (lldb::addr_t local_address)
+{
+ std::vector<LocalToRemoteAddressRange>::iterator pos, end = m_address_map.end();
+ for (pos = m_address_map.begin(); pos < end; pos++)
+ {
+ lldb::addr_t lstart = (*pos).m_local_start;
+ if (local_address >= lstart && local_address < lstart + (*pos).m_size)
+ {
+ return (*pos).m_remote_start + (local_address - lstart);
+ }
+ }
+ return LLDB_INVALID_ADDRESS;
+}
+
+void
+RecordingMemoryManager::AddToLocalToRemoteMap (lldb::addr_t lstart, size_t size, lldb::addr_t rstart)
+{
+ m_address_map.push_back (LocalToRemoteAddressRange(lstart, size, rstart));
+}
+