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d7e88e515c19ccf7ca21d01f1762697a67e1da8e
clang-p2996/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
Aidan Dodds 1b6785a1df Add ability to override JIT expr compiler options. 
Runtimes should be able to pass custom compilation options to the JIT for their stack frame. This patch adds a custom expression options member class to LanguageOptions, and modifies the clang expression evaluator to check the current runtime for those options. If those options are available on the runtime, they are passed to the clang compiler.

Committed for Luke Drummond.
Differential Revision: http://reviews.llvm.org/D15527

llvm-svn: 259644
2016-02-03 12:33:05 +00:00

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27 KiB
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//===-- ClangExpressionParser.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/AST/ASTContext.h"
#include "clang/AST/ExternalASTSource.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/Version.h"
#include "clang/CodeGen/CodeGenAction.h"
#include "clang/CodeGen/ModuleBuilder.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/Lex/Preprocessor.h"
#include "clang/Parse/ParseAST.h"
#include "clang/Rewrite/Frontend/FrontendActions.h"
#include "clang/Sema/SemaConsumer.h"
#include "clang/StaticAnalyzer/Frontend/FrontendActions.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/ExecutionEngine/MCJIT.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/DynamicLibrary.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/Signals.h"
// Project includes
#include "ClangExpressionParser.h"
#include "ClangASTSource.h"
#include "ClangExpressionHelper.h"
#include "ClangExpressionDeclMap.h"
#include "ClangModulesDeclVendor.h"
#include "ClangPersistentVariables.h"
#include "IRForTarget.h"
#include "lldb/Core/ArchSpec.h"
#include "lldb/Core/DataBufferHeap.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Core/Disassembler.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/Stream.h"
#include "lldb/Core/StreamFile.h"
#include "lldb/Core/StringList.h"
#include "lldb/Core/StreamString.h"
#include "lldb/Expression/IRExecutionUnit.h"
#include "lldb/Expression/IRDynamicChecks.h"
#include "lldb/Expression/IRInterpreter.h"
#include "lldb/Host/File.h"
#include "lldb/Host/HostInfo.h"
#include "lldb/Symbol/ClangASTContext.h"
#include "lldb/Symbol/SymbolVendor.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/ObjCLanguageRuntime.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Language.h"
using namespace clang;
using namespace llvm;
using namespace lldb_private;
//===----------------------------------------------------------------------===//
// Utility Methods for Clang
//===----------------------------------------------------------------------===//
std::string GetBuiltinIncludePath(const char *Argv0) {
SmallString<128> P(llvm::sys::fs::getMainExecutable(
Argv0, (void *)(intptr_t) GetBuiltinIncludePath));
if (!P.empty()) {
llvm::sys::path::remove_filename(P); // Remove /clang from foo/bin/clang
llvm::sys::path::remove_filename(P); // Remove /bin from foo/bin
// Get foo/lib/clang/<version>/include
llvm::sys::path::append(P, "lib", "clang", CLANG_VERSION_STRING,
"include");
}
return P.str();
}
class ClangExpressionParser::LLDBPreprocessorCallbacks : public PPCallbacks
{
ClangModulesDeclVendor &m_decl_vendor;
ClangPersistentVariables &m_persistent_vars;
StreamString m_error_stream;
bool m_has_errors = false;
public:
LLDBPreprocessorCallbacks(ClangModulesDeclVendor &decl_vendor,
ClangPersistentVariables &persistent_vars) :
m_decl_vendor(decl_vendor),
m_persistent_vars(persistent_vars)
{
}
void
moduleImport(SourceLocation import_location,
clang::ModuleIdPath path,
const clang::Module * /*null*/) override
{
std::vector<ConstString> string_path;
for (const std::pair<IdentifierInfo *, SourceLocation> &component : path)
{
string_path.push_back(ConstString(component.first->getName()));
}
StreamString error_stream;
ClangModulesDeclVendor::ModuleVector exported_modules;
if (!m_decl_vendor.AddModule(string_path, &exported_modules, m_error_stream))
{
m_has_errors = true;
}
for (ClangModulesDeclVendor::ModuleID module : exported_modules)
{
m_persistent_vars.AddHandLoadedClangModule(module);
}
}
bool hasErrors()
{
return m_has_errors;
}
const std::string &getErrorString()
{
return m_error_stream.GetString();
}
};
//===----------------------------------------------------------------------===//
// Implementation of ClangExpressionParser
//===----------------------------------------------------------------------===//
ClangExpressionParser::ClangExpressionParser (ExecutionContextScope *exe_scope,
Expression &expr,
bool generate_debug_info) :
ExpressionParser (exe_scope, expr, generate_debug_info),
m_compiler (),
m_code_generator (),
m_pp_callbacks(nullptr)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
// 1. Create a new compiler instance.
m_compiler.reset(new CompilerInstance());
lldb::LanguageType frame_lang = expr.Language(); // defaults to lldb::eLanguageTypeUnknown
bool overridden_target_opts = false;
lldb_private::LanguageRuntime *lang_rt = nullptr;
lldb::TargetSP target_sp;
if (exe_scope)
target_sp = exe_scope->CalculateTarget();
// If the expression is being evaluated in the context of an existing
// stack frame, we introspect to see if the language runtime is available.
auto frame = exe_scope->CalculateStackFrame();
// Make sure the user hasn't provided a preferred execution language
// with `expression --language X -- ...`
if (frame && frame_lang == lldb::eLanguageTypeUnknown)
frame_lang = frame->GetLanguage();
if (frame_lang != lldb::eLanguageTypeUnknown)
{
lang_rt = exe_scope->CalculateProcess()->GetLanguageRuntime(frame_lang);
if (log)
log->Printf("Frame has language of type %s", Language::GetNameForLanguageType(frame_lang));
}
// 2. Configure the compiler with a set of default options that are appropriate
// for most situations.
if (target_sp && target_sp->GetArchitecture().IsValid())
{
std::string triple = target_sp->GetArchitecture().GetTriple().str();
m_compiler->getTargetOpts().Triple = triple;
if (log)
log->Printf("Using %s as the target triple", m_compiler->getTargetOpts().Triple.c_str());
}
else
{
// If we get here we don't have a valid target and just have to guess.
// Sometimes this will be ok to just use the host target triple (when we evaluate say "2+3", but other
// expressions like breakpoint conditions and other things that _are_ target specific really shouldn't just be
// using the host triple. In such a case the language runtime should expose an overridden options set (3),
// below.
m_compiler->getTargetOpts().Triple = llvm::sys::getDefaultTargetTriple();
if (log)
log->Printf("Using default target triple of %s", m_compiler->getTargetOpts().Triple.c_str());
}
// Now add some special fixes for known architectures:
// Any arm32 iOS environment, but not on arm64
if (m_compiler->getTargetOpts().Triple.find("arm64") == std::string::npos &&
m_compiler->getTargetOpts().Triple.find("arm") != std::string::npos &&
m_compiler->getTargetOpts().Triple.find("ios") != std::string::npos)
{
m_compiler->getTargetOpts().ABI = "apcs-gnu";
}
// Supported subsets of x86
if (target_sp->GetArchitecture().GetMachine() == llvm::Triple::x86 ||
target_sp->GetArchitecture().GetMachine() == llvm::Triple::x86_64)
{
m_compiler->getTargetOpts().Features.push_back("+sse");
m_compiler->getTargetOpts().Features.push_back("+sse2");
}
// 3. Now allow the runtime to provide custom configuration options for the target.
// In this case, a specialized language runtime is available and we can query it for extra options.
// For 99% of use cases, this will not be needed and should be provided when basic platform detection is not enough.
if (lang_rt)
overridden_target_opts = lang_rt->GetOverrideExprOptions(m_compiler->getTargetOpts());
if (overridden_target_opts)
if (log)
{
log->Debug("Using overridden target options for the expression evaluation");
auto opts = m_compiler->getTargetOpts();
log->Debug("Triple: '%s'", opts.Triple.c_str());
log->Debug("CPU: '%s'", opts.CPU.c_str());
log->Debug("FPMath: '%s'", opts.FPMath.c_str());
log->Debug("ABI: '%s'", opts.ABI.c_str());
log->Debug("LinkerVersion: '%s'", opts.LinkerVersion.c_str());
StringList::LogDump(log, opts.FeaturesAsWritten, "FeaturesAsWritten");
StringList::LogDump(log, opts.Features, "Features");
StringList::LogDump(log, opts.Reciprocals, "Reciprocals");
}
// 4. Create and install the target on the compiler.
m_compiler->createDiagnostics();
auto target_info = TargetInfo::CreateTargetInfo(m_compiler->getDiagnostics(), m_compiler->getInvocation().TargetOpts);
if (log)
{
log->Printf("Using SIMD alignment: %d", target_info->getSimdDefaultAlign());
log->Printf("Target datalayout string: '%s'", target_info->getDataLayoutString());
log->Printf("Target ABI: '%s'", target_info->getABI().str().c_str());
log->Printf("Target vector alignment: %d", target_info->getMaxVectorAlign());
}
m_compiler->setTarget(target_info);
assert (m_compiler->hasTarget());
// 5. Set language options.
lldb::LanguageType language = expr.Language();
switch (language)
{
case lldb::eLanguageTypeC:
case lldb::eLanguageTypeC89:
case lldb::eLanguageTypeC99:
case lldb::eLanguageTypeC11:
// FIXME: the following language option is a temporary workaround,
// to "ask for C, get C++."
// For now, the expression parser must use C++ anytime the
// language is a C family language, because the expression parser
// uses features of C++ to capture values.
m_compiler->getLangOpts().CPlusPlus = true;
break;
case lldb::eLanguageTypeObjC:
m_compiler->getLangOpts().ObjC1 = true;
m_compiler->getLangOpts().ObjC2 = true;
// FIXME: the following language option is a temporary workaround,
// to "ask for ObjC, get ObjC++" (see comment above).
m_compiler->getLangOpts().CPlusPlus = true;
break;
case lldb::eLanguageTypeC_plus_plus:
case lldb::eLanguageTypeC_plus_plus_11:
case lldb::eLanguageTypeC_plus_plus_14:
m_compiler->getLangOpts().CPlusPlus11 = true;
m_compiler->getHeaderSearchOpts().UseLibcxx = true;
// fall thru ...
case lldb::eLanguageTypeC_plus_plus_03:
m_compiler->getLangOpts().CPlusPlus = true;
// FIXME: the following language option is a temporary workaround,
// to "ask for C++, get ObjC++". Apple hopes to remove this requirement
// on non-Apple platforms, but for now it is needed.
m_compiler->getLangOpts().ObjC1 = true;
break;
case lldb::eLanguageTypeObjC_plus_plus:
case lldb::eLanguageTypeUnknown:
default:
m_compiler->getLangOpts().ObjC1 = true;
m_compiler->getLangOpts().ObjC2 = true;
m_compiler->getLangOpts().CPlusPlus = true;
m_compiler->getLangOpts().CPlusPlus11 = true;
m_compiler->getHeaderSearchOpts().UseLibcxx = true;
break;
}
m_compiler->getLangOpts().Bool = true;
m_compiler->getLangOpts().WChar = true;
m_compiler->getLangOpts().Blocks = true;
m_compiler->getLangOpts().DebuggerSupport = true; // Features specifically for debugger clients
if (expr.DesiredResultType() == Expression::eResultTypeId)
m_compiler->getLangOpts().DebuggerCastResultToId = true;
m_compiler->getLangOpts().CharIsSigned =
ArchSpec(m_compiler->getTargetOpts().Triple.c_str()).CharIsSignedByDefault();
// Spell checking is a nice feature, but it ends up completing a
// lot of types that we didn't strictly speaking need to complete.
// As a result, we spend a long time parsing and importing debug
// information.
m_compiler->getLangOpts().SpellChecking = false;
lldb::ProcessSP process_sp;
if (exe_scope)
process_sp = exe_scope->CalculateProcess();
if (process_sp && m_compiler->getLangOpts().ObjC1)
{
if (process_sp->GetObjCLanguageRuntime())
{
if (process_sp->GetObjCLanguageRuntime()->GetRuntimeVersion() == ObjCLanguageRuntime::ObjCRuntimeVersions::eAppleObjC_V2)
m_compiler->getLangOpts().ObjCRuntime.set(ObjCRuntime::MacOSX, VersionTuple(10, 7));
else
m_compiler->getLangOpts().ObjCRuntime.set(ObjCRuntime::FragileMacOSX, VersionTuple(10, 7));
if (process_sp->GetObjCLanguageRuntime()->HasNewLiteralsAndIndexing())
m_compiler->getLangOpts().DebuggerObjCLiteral = true;
}
}
m_compiler->getLangOpts().ThreadsafeStatics = false;
m_compiler->getLangOpts().AccessControl = false; // Debuggers get universal access
m_compiler->getLangOpts().DollarIdents = true; // $ indicates a persistent variable name
// Set CodeGen options
m_compiler->getCodeGenOpts().EmitDeclMetadata = true;
m_compiler->getCodeGenOpts().InstrumentFunctions = false;
m_compiler->getCodeGenOpts().DisableFPElim = true;
m_compiler->getCodeGenOpts().OmitLeafFramePointer = false;
if (generate_debug_info)
m_compiler->getCodeGenOpts().setDebugInfo(codegenoptions::FullDebugInfo);
else
m_compiler->getCodeGenOpts().setDebugInfo(codegenoptions::NoDebugInfo);
// Disable some warnings.
m_compiler->getDiagnostics().setSeverityForGroup(clang::diag::Flavor::WarningOrError,
"unused-value", clang::diag::Severity::Ignored, SourceLocation());
m_compiler->getDiagnostics().setSeverityForGroup(clang::diag::Flavor::WarningOrError,
"odr", clang::diag::Severity::Ignored, SourceLocation());
// 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_compiler->getTarget().adjust(m_compiler->getLangOpts());
// 6. Set up the diagnostic buffer for reporting errors
m_compiler->getDiagnostics().setClient(new clang::TextDiagnosticBuffer);
// 7. Set up the source management objects inside the compiler
clang::FileSystemOptions file_system_options;
m_file_manager.reset(new clang::FileManager(file_system_options));
if (!m_compiler->hasSourceManager())
m_compiler->createSourceManager(*m_file_manager.get());
m_compiler->createFileManager();
m_compiler->createPreprocessor(TU_Complete);
if (ClangModulesDeclVendor *decl_vendor = target_sp->GetClangModulesDeclVendor())
{
ClangPersistentVariables *clang_persistent_vars = llvm::cast<ClangPersistentVariables>(target_sp->GetPersistentExpressionStateForLanguage(lldb::eLanguageTypeC));
std::unique_ptr<PPCallbacks> pp_callbacks(new LLDBPreprocessorCallbacks(*decl_vendor, *clang_persistent_vars));
m_pp_callbacks = static_cast<LLDBPreprocessorCallbacks*>(pp_callbacks.get());
m_compiler->getPreprocessor().addPPCallbacks(std::move(pp_callbacks));
}
// 8. Most of this we get from the CompilerInstance, but we
// also want to give the context an ExternalASTSource.
m_selector_table.reset(new SelectorTable());
m_builtin_context.reset(new Builtin::Context());
std::unique_ptr<clang::ASTContext> ast_context(new ASTContext(m_compiler->getLangOpts(),
m_compiler->getSourceManager(),
m_compiler->getPreprocessor().getIdentifierTable(),
*m_selector_table.get(),
*m_builtin_context.get()));
ast_context->InitBuiltinTypes(m_compiler->getTarget());
ClangExpressionHelper *type_system_helper = dyn_cast<ClangExpressionHelper>(m_expr.GetTypeSystemHelper());
ClangExpressionDeclMap *decl_map = type_system_helper->DeclMap();
if (decl_map)
{
llvm::IntrusiveRefCntPtr<clang::ExternalASTSource> ast_source(decl_map->CreateProxy());
decl_map->InstallASTContext(ast_context.get());
ast_context->setExternalSource(ast_source);
}
m_ast_context.reset(new ClangASTContext(m_compiler->getTargetOpts().Triple.c_str()));
m_ast_context->setASTContext(ast_context.get());
m_compiler->setASTContext(ast_context.release());
std::string module_name("$__lldb_module");
m_llvm_context.reset(new LLVMContext());
m_code_generator.reset(CreateLLVMCodeGen(m_compiler->getDiagnostics(),
module_name,
m_compiler->getHeaderSearchOpts(),
m_compiler->getPreprocessorOpts(),
m_compiler->getCodeGenOpts(),
*m_llvm_context));
}
ClangExpressionParser::~ClangExpressionParser()
{
}
unsigned
ClangExpressionParser::Parse (Stream &stream)
{
TextDiagnosticBuffer *diag_buf = static_cast<TextDiagnosticBuffer*>(m_compiler->getDiagnostics().getClient());
diag_buf->FlushDiagnostics (m_compiler->getDiagnostics());
const char *expr_text = m_expr.Text();
clang::SourceManager &SourceMgr = m_compiler->getSourceManager();
bool created_main_file = false;
if (m_compiler->getCodeGenOpts().getDebugInfo() == codegenoptions::FullDebugInfo)
{
std::string temp_source_path;
int temp_fd = -1;
llvm::SmallString<PATH_MAX> result_path;
FileSpec tmpdir_file_spec;
if (HostInfo::GetLLDBPath(lldb::ePathTypeLLDBTempSystemDir, tmpdir_file_spec))
{
tmpdir_file_spec.AppendPathComponent("lldb-%%%%%%.expr");
temp_source_path = tmpdir_file_spec.GetPath();
llvm::sys::fs::createUniqueFile(temp_source_path, temp_fd, result_path);
}
else
{
llvm::sys::fs::createTemporaryFile("lldb", "expr", temp_fd, result_path);
}
if (temp_fd != -1)
{
lldb_private::File file (temp_fd, true);
const size_t expr_text_len = strlen(expr_text);
size_t bytes_written = expr_text_len;
if (file.Write(expr_text, bytes_written).Success())
{
if (bytes_written == expr_text_len)
{
file.Close();
SourceMgr.setMainFileID(SourceMgr.createFileID(
m_file_manager->getFile(result_path),
SourceLocation(), SrcMgr::C_User));
created_main_file = true;
}
}
}
}
if (!created_main_file)
{
std::unique_ptr<MemoryBuffer> memory_buffer = MemoryBuffer::getMemBufferCopy(expr_text, __FUNCTION__);
SourceMgr.setMainFileID(SourceMgr.createFileID(std::move(memory_buffer)));
}
diag_buf->BeginSourceFile(m_compiler->getLangOpts(), &m_compiler->getPreprocessor());
ClangExpressionHelper *type_system_helper = dyn_cast<ClangExpressionHelper>(m_expr.GetTypeSystemHelper());
ASTConsumer *ast_transformer = type_system_helper->ASTTransformer(m_code_generator.get());
if (ClangExpressionDeclMap *decl_map = type_system_helper->DeclMap())
decl_map->InstallCodeGenerator(m_code_generator.get());
if (ast_transformer)
{
ast_transformer->Initialize(m_compiler->getASTContext());
ParseAST(m_compiler->getPreprocessor(), ast_transformer, m_compiler->getASTContext());
}
else
{
m_code_generator->Initialize(m_compiler->getASTContext());
ParseAST(m_compiler->getPreprocessor(), m_code_generator.get(), m_compiler->getASTContext());
}
diag_buf->EndSourceFile();
TextDiagnosticBuffer::const_iterator diag_iterator;
int num_errors = 0;
if (m_pp_callbacks && m_pp_callbacks->hasErrors())
{
num_errors++;
stream.PutCString(m_pp_callbacks->getErrorString().c_str());
}
for (diag_iterator = diag_buf->warn_begin();
diag_iterator != diag_buf->warn_end();
++diag_iterator)
stream.Printf("warning: %s\n", (*diag_iterator).second.c_str());
for (diag_iterator = diag_buf->err_begin();
diag_iterator != diag_buf->err_end();
++diag_iterator)
{
num_errors++;
stream.Printf("error: %s\n", (*diag_iterator).second.c_str());
}
for (diag_iterator = diag_buf->note_begin();
diag_iterator != diag_buf->note_end();
++diag_iterator)
stream.Printf("note: %s\n", (*diag_iterator).second.c_str());
if (!num_errors)
{
if (type_system_helper->DeclMap() && !type_system_helper->DeclMap()->ResolveUnknownTypes())
{
stream.Printf("error: Couldn't infer the type of a variable\n");
num_errors++;
}
}
return num_errors;
}
static bool FindFunctionInModule (ConstString &mangled_name,
llvm::Module *module,
const char *orig_name)
{
for (llvm::Module::iterator fi = module->getFunctionList().begin(), fe = module->getFunctionList().end();
fi != fe;
++fi)
{
if (fi->getName().str().find(orig_name) != std::string::npos)
{
mangled_name.SetCString(fi->getName().str().c_str());
return true;
}
}
return false;
}
Error
ClangExpressionParser::PrepareForExecution (lldb::addr_t &func_addr,
lldb::addr_t &func_end,
lldb::IRExecutionUnitSP &execution_unit_sp,
ExecutionContext &exe_ctx,
bool &can_interpret,
ExecutionPolicy execution_policy)
{
func_addr = LLDB_INVALID_ADDRESS;
func_end = LLDB_INVALID_ADDRESS;
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
Error err;
std::unique_ptr<llvm::Module> llvm_module_ap (m_code_generator->ReleaseModule());
if (!llvm_module_ap.get())
{
err.SetErrorToGenericError();
err.SetErrorString("IR doesn't contain a module");
return err;
}
// Find the actual name of the function (it's often mangled somehow)
ConstString function_name;
if (!FindFunctionInModule(function_name, llvm_module_ap.get(), m_expr.FunctionName()))
{
err.SetErrorToGenericError();
err.SetErrorStringWithFormat("Couldn't find %s() in the module", m_expr.FunctionName());
return err;
}
else
{
if (log)
log->Printf("Found function %s for %s", function_name.AsCString(), m_expr.FunctionName());
}
execution_unit_sp.reset(new IRExecutionUnit (m_llvm_context, // handed off here
llvm_module_ap, // handed off here
function_name,
exe_ctx.GetTargetSP(),
m_compiler->getTargetOpts().Features));
ClangExpressionHelper *type_system_helper = dyn_cast<ClangExpressionHelper>(m_expr.GetTypeSystemHelper());
ClangExpressionDeclMap *decl_map = type_system_helper->DeclMap(); // result can be NULL
if (decl_map)
{
Stream *error_stream = NULL;
Target *target = exe_ctx.GetTargetPtr();
if (target)
error_stream = target->GetDebugger().GetErrorFile().get();
IRForTarget ir_for_target(decl_map,
m_expr.NeedsVariableResolution(),
*execution_unit_sp,
error_stream,
function_name.AsCString());
bool ir_can_run = ir_for_target.runOnModule(*execution_unit_sp->GetModule());
Error interpret_error;
Process *process = exe_ctx.GetProcessPtr();
bool interpret_function_calls = !process ? false : process->CanInterpretFunctionCalls();
can_interpret = IRInterpreter::CanInterpret(*execution_unit_sp->GetModule(), *execution_unit_sp->GetFunction(), interpret_error, interpret_function_calls);
if (!ir_can_run)
{
err.SetErrorString("The expression could not be prepared to run in the target");
return err;
}
if (!can_interpret && execution_policy == eExecutionPolicyNever)
{
err.SetErrorStringWithFormat("Can't run the expression locally: %s", interpret_error.AsCString());
return err;
}
if (!process && execution_policy == eExecutionPolicyAlways)
{
err.SetErrorString("Expression needed to run in the target, but the target can't be run");
return err;
}
if (execution_policy == eExecutionPolicyAlways || !can_interpret)
{
if (m_expr.NeedsValidation() && process)
{
if (!process->GetDynamicCheckers())
{
DynamicCheckerFunctions *dynamic_checkers = new DynamicCheckerFunctions();
StreamString install_errors;
if (!dynamic_checkers->Install(install_errors, exe_ctx))
{
if (install_errors.GetString().empty())
err.SetErrorString ("couldn't install checkers, unknown error");
else
err.SetErrorString (install_errors.GetString().c_str());
return err;
}
process->SetDynamicCheckers(dynamic_checkers);
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Finished installing dynamic checkers ==");
}
IRDynamicChecks ir_dynamic_checks(*process->GetDynamicCheckers(), function_name.AsCString());
if (!ir_dynamic_checks.runOnModule(*execution_unit_sp->GetModule()))
{
err.SetErrorToGenericError();
err.SetErrorString("Couldn't add dynamic checks to the expression");
return err;
}
}
execution_unit_sp->GetRunnableInfo(err, func_addr, func_end);
}
}
else
{
execution_unit_sp->GetRunnableInfo(err, func_addr, func_end);
}
return err;
}
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