lldb_private::formatters::NSArrayMSyntheticFrontEnd::NSArrayMSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_exe_ctx_ref(),
m_ptr_size(8),
m_data_32(NULL),
m_data_64(NULL)
{
if (valobj_sp)
m_id_type = ClangASTType(valobj_sp->GetClangAST(),valobj_sp->GetClangAST()->ObjCBuiltinIdTy.getAsOpaquePtr());
}
void
lldb_private::formatters::LibcxxStdMapSyntheticFrontEnd::GetValueOffset (const lldb::ValueObjectSP& node)
{
if (m_skip_size != UINT32_MAX)
return;
if (!node)
return;
ClangASTType node_type(node->GetClangAST(),node->GetClangType());
uint64_t bit_offset;
if (ClangASTContext::GetIndexOfFieldWithName(node->GetClangAST(),node->GetClangType(),"__value_",NULL,&bit_offset) == UINT32_MAX)
return;
m_skip_size = bit_offset / 8u;
}
std::string
StringSummaryFormat::FormatObject(lldb::ValueObjectSP object)
{
if (!object.get())
return "NULL";
StreamString s;
ExecutionContext exe_ctx;
object->GetExecutionContextScope()->CalculateExecutionContext(exe_ctx);
SymbolContext sc;
StackFrame *frame = exe_ctx.GetFramePtr();
if (frame)
sc = frame->GetSymbolContext(lldb::eSymbolContextEverything);
if (m_show_members_oneliner)
{
ValueObjectSP synth_valobj = object->GetSyntheticValue(lldb::eUseSyntheticFilter);
const uint32_t num_children = synth_valobj->GetNumChildren();
if (num_children)
{
s.PutChar('(');
for (uint32_t idx=0; idx<num_children; ++idx)
{
lldb::ValueObjectSP child_sp(synth_valobj->GetChildAtIndex(idx, true));
if (child_sp.get())
{
if (idx)
s.PutCString(", ");
s.PutCString(child_sp.get()->GetName().AsCString());
s.PutChar('=');
child_sp.get()->GetPrintableRepresentation(s);
}
}
s.PutChar(')');
return s.GetString();
}
else
return "";
}
else
{
if (Debugger::FormatPrompt(m_format.c_str(), &sc, &exe_ctx, &sc.line_entry.range.GetBaseAddress(), s, NULL, object.get()))
return s.GetString();
else
return "";
}
}
lldb_private::formatters::NSArrayMSyntheticFrontEnd::NSArrayMSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_exe_ctx_ref(),
m_ptr_size(8),
m_data_32(NULL),
m_data_64(NULL)
{
if (valobj_sp)
{
clang::ASTContext *ast = valobj_sp->GetClangType().GetASTContext();
if (ast)
m_id_type = ClangASTType(ast, ast->ObjCBuiltinIdTy);
}
}
NSIndexPathSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd (*valobj_sp.get()),
m_ptr_size(0),
m_uint_star_type()
{
m_ptr_size = m_backend.GetTargetSP()->GetArchitecture().GetAddressByteSize();
}
lldb_private::formatters::NSArrayMSyntheticFrontEnd::NSArrayMSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp),
m_exe_ctx_ref(),
m_ptr_size(8),
m_id_type(),
m_children()
{
if (valobj_sp)
{
clang::ASTContext *ast = valobj_sp->GetExecutionContextRef().GetTargetSP()->GetScratchClangASTContext()->getASTContext();
if (ast)
m_id_type = ClangASTType(ast, ast->ObjCBuiltinIdTy);
if (valobj_sp->GetProcessSP())
m_ptr_size = valobj_sp->GetProcessSP()->GetAddressByteSize();
}
}
lldb_private::formatters::swift::SwiftOptionalSyntheticFrontEnd::SwiftOptionalSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_is_none(false),
m_children(false),
m_some(nullptr)
{
}
lldb_private::formatters::swift::EnumSyntheticFrontEnd::EnumSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_exe_ctx_ref(),
m_element_name(nullptr),
m_child_index(UINT32_MAX)
{
if (valobj_sp)
Update();
}
lldb_private::formatters::NSDictionaryMSyntheticFrontEnd::NSDictionaryMSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_exe_ctx_ref(),
m_ptr_size(8),
m_order(lldb::eByteOrderInvalid),
m_data_32(NULL),
m_data_64(NULL),
m_pair_type()
{
}
lldb_private::formatters::NSSetMSyntheticFrontEnd::NSSetMSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_exe_ctx_ref(),
m_ptr_size(8),
m_data_32(NULL),
m_data_64(NULL)
{
if (valobj_sp)
Update ();
}
lldb_private::formatters::LibcxxInitializerListSyntheticFrontEnd::LibcxxInitializerListSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_start(NULL),
m_element_type(),
m_element_size(0),
m_num_elements(0),
m_children()
{
if (valobj_sp)
Update();
}
lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::LibcxxStdVectorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_start(NULL),
m_finish(NULL),
m_element_type(),
m_element_size(0),
m_children()
{
if (valobj_sp)
Update();
}
lldb_private::formatters::LibcxxStdUnorderedMapSyntheticFrontEnd::LibcxxStdUnorderedMapSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_tree(NULL),
m_num_elements(0),
m_next_element(nullptr),
m_children(),
m_elements_cache()
{
if (valobj_sp)
Update();
}
lldb_private::formatters::LibcxxStdMapSyntheticFrontEnd::LibcxxStdMapSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_tree(NULL),
m_root_node(NULL),
m_element_type(),
m_skip_size(UINT32_MAX),
m_count(UINT32_MAX),
m_children()
{
if (valobj_sp)
Update();
}
lldb_private::formatters::LibcxxStdListSyntheticFrontEnd::LibcxxStdListSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_list_capping_size(0),
m_loop_detected(0),
m_node_address(),
m_head(NULL),
m_tail(NULL),
m_element_type(),
m_count(UINT32_MAX),
m_children()
{
if (valobj_sp)
Update();
}
lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::LibstdcppMapIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_exe_ctx_ref(),
m_pair_address(0),
m_pair_type(),
m_options(),
m_pair_sp()
{
if (valobj_sp)
Update();
m_options.SetCoerceToId(false);
m_options.SetUnwindOnError(true);
m_options.SetKeepInMemory(true);
m_options.SetUseDynamic(lldb::eDynamicCanRunTarget);
}
void
SBValue::SetSP (const lldb::ValueObjectSP &sp, lldb::DynamicValueType use_dynamic)
{
if (sp)
{
lldb::TargetSP target_sp(sp->GetTargetSP());
if (target_sp)
{
bool use_synthetic = target_sp->TargetProperties::GetEnableSyntheticValue();
SetSP (sp, use_dynamic, use_synthetic);
}
else
SetSP (sp, use_dynamic, true);
}
else
SetSP (sp, use_dynamic, false);
}
void
SBValue::SetSP (const lldb::ValueObjectSP &sp, bool use_synthetic)
{
if (sp)
{
lldb::TargetSP target_sp(sp->GetTargetSP());
if (target_sp)
{
lldb::DynamicValueType use_dynamic = target_sp->GetPreferDynamicValue();
SetSP (sp, use_dynamic, use_synthetic);
}
else
SetSP (sp, eNoDynamicValues, use_synthetic);
}
else
SetSP (sp, eNoDynamicValues, use_synthetic);
}
void
SBValue::SetSP (const lldb::ValueObjectSP &sp)
{
if (sp)
{
lldb::TargetSP target_sp(sp->GetTargetSP());
if (target_sp)
{
lldb::DynamicValueType use_dynamic = target_sp->GetPreferDynamicValue();
bool use_synthetic = target_sp->TargetProperties::GetEnableSyntheticValue();
m_opaque_sp = ValueImplSP(new ValueImpl(sp, use_dynamic, use_synthetic));
}
else
m_opaque_sp = ValueImplSP(new ValueImpl(sp,eNoDynamicValues,true));
}
else
m_opaque_sp = ValueImplSP(new ValueImpl(sp,eNoDynamicValues,false));
}
SyntheticScriptProvider::FrontEnd::FrontEnd(std::string pclass,
lldb::ValueObjectSP be) :
SyntheticChildrenFrontEnd(be),
m_python_class(pclass)
{
if (be.get() == NULL)
{
m_interpreter = NULL;
m_wrapper = NULL;
return;
}
m_interpreter = m_backend->GetUpdatePoint().GetTargetSP()->GetDebugger().GetCommandInterpreter().GetScriptInterpreter();
if (m_interpreter == NULL)
m_wrapper = NULL;
else
m_wrapper = m_interpreter->CreateSyntheticScriptedProvider(m_python_class, m_backend);
}
void lldb_private::formatters::LibcxxStdMapSyntheticFrontEnd::GetValueOffset(
const lldb::ValueObjectSP &node) {
if (m_skip_size != UINT32_MAX)
return;
if (!node)
return;
CompilerType node_type(node->GetCompilerType());
uint64_t bit_offset;
if (node_type.GetIndexOfFieldWithName("__value_", nullptr, &bit_offset) !=
UINT32_MAX) {
m_skip_size = bit_offset / 8u;
} else {
ClangASTContext *ast_ctx =
llvm::dyn_cast_or_null<ClangASTContext>(node_type.GetTypeSystem());
if (!ast_ctx)
return;
CompilerType tree_node_type = ast_ctx->CreateStructForIdentifier(
ConstString(),
{{"ptr0", ast_ctx->GetBasicType(lldb::eBasicTypeVoid).GetPointerType()},
{"ptr1", ast_ctx->GetBasicType(lldb::eBasicTypeVoid).GetPointerType()},
{"ptr2", ast_ctx->GetBasicType(lldb::eBasicTypeVoid).GetPointerType()},
{"cw", ast_ctx->GetBasicType(lldb::eBasicTypeBool)},
{"payload", (m_element_type.GetCompleteType(), m_element_type)}});
std::string child_name;
uint32_t child_byte_size;
int32_t child_byte_offset = 0;
uint32_t child_bitfield_bit_size;
uint32_t child_bitfield_bit_offset;
bool child_is_base_class;
bool child_is_deref_of_parent;
uint64_t language_flags;
if (tree_node_type
.GetChildCompilerTypeAtIndex(
nullptr, 4, true, true, true, child_name, child_byte_size,
child_byte_offset, child_bitfield_bit_size,
child_bitfield_bit_offset, child_is_base_class,
child_is_deref_of_parent, nullptr, language_flags)
.IsValid())
m_skip_size = (uint32_t)child_byte_offset;
}
}
Error
ABISysV_mips::SetReturnValueObject(lldb::StackFrameSP &frame_sp, lldb::ValueObjectSP &new_value_sp)
{
Error error;
if (!new_value_sp)
{
error.SetErrorString("Empty value object for return value.");
return error;
}
CompilerType clang_type = new_value_sp->GetCompilerType();
if (!clang_type)
{
error.SetErrorString ("Null clang type for return value.");
return error;
}
Thread *thread = frame_sp->GetThread().get();
bool is_signed;
uint32_t count;
bool is_complex;
RegisterContext *reg_ctx = thread->GetRegisterContext().get();
bool set_it_simple = false;
if (clang_type.IsIntegerType (is_signed) || clang_type.IsPointerType())
{
DataExtractor data;
Error data_error;
size_t num_bytes = new_value_sp->GetData(data, data_error);
if (data_error.Fail())
{
error.SetErrorStringWithFormat("Couldn't convert return value to raw data: %s", data_error.AsCString());
return error;
}
lldb::offset_t offset = 0;
if (num_bytes <= 8)
{
const RegisterInfo *r2_info = reg_ctx->GetRegisterInfoByName("r2", 0);
if (num_bytes <= 4)
{
uint32_t raw_value = data.GetMaxU32(&offset, num_bytes);
if (reg_ctx->WriteRegisterFromUnsigned (r2_info, raw_value))
set_it_simple = true;
}
else
{
uint32_t raw_value = data.GetMaxU32(&offset, 4);
if (reg_ctx->WriteRegisterFromUnsigned (r2_info, raw_value))
{
const RegisterInfo *r3_info = reg_ctx->GetRegisterInfoByName("r3", 0);
uint32_t raw_value = data.GetMaxU32(&offset, num_bytes - offset);
if (reg_ctx->WriteRegisterFromUnsigned (r3_info, raw_value))
set_it_simple = true;
}
}
}
else
{
error.SetErrorString("We don't support returning longer than 64 bit integer values at present.");
}
}
else if (clang_type.IsFloatingPointType (count, is_complex))
{
if (is_complex)
error.SetErrorString ("We don't support returning complex values at present");
else
error.SetErrorString ("We don't support returning float values at present");
}
if (!set_it_simple)
error.SetErrorString ("We only support setting simple integer return types at present.");
return error;
}
lldb::ExpressionResults
ClangUserExpression::Evaluate (ExecutionContext &exe_ctx,
const EvaluateExpressionOptions& options,
const char *expr_cstr,
const char *expr_prefix,
lldb::ValueObjectSP &result_valobj_sp,
Error &error)
{
Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_EXPRESSIONS | LIBLLDB_LOG_STEP));
lldb_private::ExecutionPolicy execution_policy = options.GetExecutionPolicy();
const lldb::LanguageType language = options.GetLanguage();
const ResultType desired_type = options.DoesCoerceToId() ? ClangUserExpression::eResultTypeId : ClangUserExpression::eResultTypeAny;
lldb::ExpressionResults execution_results = lldb::eExpressionSetupError;
Process *process = exe_ctx.GetProcessPtr();
if (process == NULL || process->GetState() != lldb::eStateStopped)
{
if (execution_policy == eExecutionPolicyAlways)
{
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Expression may not run, but is not constant ==");
error.SetErrorString ("expression needed to run but couldn't");
return execution_results;
}
}
if (process == NULL || !process->CanJIT())
execution_policy = eExecutionPolicyNever;
ClangUserExpressionSP user_expression_sp (new ClangUserExpression (expr_cstr, expr_prefix, language, desired_type));
StreamString error_stream;
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Parsing expression %s ==", expr_cstr);
const bool keep_expression_in_memory = true;
const bool generate_debug_info = options.GetGenerateDebugInfo();
if (options.InvokeCancelCallback (lldb::eExpressionEvaluationParse))
{
error.SetErrorString ("expression interrupted by callback before parse");
result_valobj_sp = ValueObjectConstResult::Create (exe_ctx.GetBestExecutionContextScope(), error);
return lldb::eExpressionInterrupted;
}
if (!user_expression_sp->Parse (error_stream,
exe_ctx,
execution_policy,
keep_expression_in_memory,
generate_debug_info))
{
if (error_stream.GetString().empty())
error.SetExpressionError (lldb::eExpressionParseError, "expression failed to parse, unknown error");
else
error.SetExpressionError (lldb::eExpressionParseError, error_stream.GetString().c_str());
}
else
{
lldb::ClangExpressionVariableSP expr_result;
if (execution_policy == eExecutionPolicyNever &&
!user_expression_sp->CanInterpret())
{
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Expression may not run, but is not constant ==");
if (error_stream.GetString().empty())
error.SetExpressionError (lldb::eExpressionSetupError, "expression needed to run but couldn't");
}
else
{
if (options.InvokeCancelCallback (lldb::eExpressionEvaluationExecution))
{
error.SetExpressionError (lldb::eExpressionInterrupted, "expression interrupted by callback before execution");
result_valobj_sp = ValueObjectConstResult::Create (exe_ctx.GetBestExecutionContextScope(), error);
return lldb::eExpressionInterrupted;
}
error_stream.GetString().clear();
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Executing expression ==");
execution_results = user_expression_sp->Execute (error_stream,
exe_ctx,
options,
user_expression_sp,
expr_result);
if (options.GetResultIsInternal())
{
process->GetTarget().GetPersistentVariables().RemovePersistentVariable (expr_result);
}
if (execution_results != lldb::eExpressionCompleted)
{
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Execution completed abnormally ==");
if (error_stream.GetString().empty())
error.SetExpressionError (execution_results, "expression failed to execute, unknown error");
else
error.SetExpressionError (execution_results, error_stream.GetString().c_str());
}
else
{
if (expr_result)
{
result_valobj_sp = expr_result->GetValueObject();
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Execution completed normally with result %s ==",
result_valobj_sp->GetValueAsCString());
}
else
{
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Execution completed normally with no result ==");
error.SetError(ClangUserExpression::kNoResult, lldb::eErrorTypeGeneric);
}
}
}
}
if (options.InvokeCancelCallback(lldb::eExpressionEvaluationComplete))
{
error.SetExpressionError (lldb::eExpressionInterrupted, "expression interrupted by callback after complete");
return lldb::eExpressionInterrupted;
}
if (result_valobj_sp.get() == NULL)
{
result_valobj_sp = ValueObjectConstResult::Create (exe_ctx.GetBestExecutionContextScope(), error);
}
return execution_results;
}
SwiftHashedContainerNativeBufferHandler::SwiftHashedContainerNativeBufferHandler (lldb::ValueObjectSP nativeStorage_sp, CompilerType key_type, CompilerType value_type) :
m_nativeStorage(nativeStorage_sp.get()),
m_process(nullptr),
m_ptr_size(0),
m_count(0),
m_capacity(0),
m_bitmask_ptr(LLDB_INVALID_ADDRESS),
m_keys_ptr(LLDB_INVALID_ADDRESS),
m_values_ptr(LLDB_INVALID_ADDRESS),
m_element_type(),
m_key_stride(key_type.GetByteStride()),
m_value_stride(0),
m_bitmask_cache()
{
static ConstString g_initializedEntries("initializedEntries");
static ConstString g_values("values");
static ConstString g__rawValue("_rawValue");
static ConstString g_keys("keys");
static ConstString g_buffer("buffer");
static ConstString g_key("key");
static ConstString g_value("value");
if (!m_nativeStorage)
return;
if (!key_type)
return;
if (value_type)
{
m_value_stride = value_type.GetByteStride();
if (SwiftASTContext *swift_ast = llvm::dyn_cast_or_null<SwiftASTContext>(key_type.GetTypeSystem()))
{
std::vector<SwiftASTContext::TupleElement> tuple_elements{ {g_key,key_type}, {g_value,value_type} };
m_element_type = swift_ast->CreateTupleType(tuple_elements);
}
}
else
m_element_type = key_type;
if (!m_element_type)
return;
auto buffer_ptr = m_nativeStorage->GetChildAtNamePath( {g_buffer} )->GetValueAsUnsigned(LLDB_INVALID_ADDRESS);
if (!buffer_ptr)
return;
m_process = m_nativeStorage->GetProcessSP().get();
if (!m_process)
return;
m_ptr_size = m_process->GetAddressByteSize();
Error error;
m_capacity = m_process->ReadPointerFromMemory(buffer_ptr + 2 * m_ptr_size, error);
if (error.Fail())
return;
m_count = m_process->ReadPointerFromMemory(buffer_ptr + 3 * m_ptr_size, error);
if (error.Fail())
return;
m_nativeStorage = nativeStorage_sp.get();
m_bitmask_ptr = m_nativeStorage->GetChildAtNamePath( {g_initializedEntries,g_values,g__rawValue} )->GetValueAsUnsigned(LLDB_INVALID_ADDRESS);
if (ValueObjectSP value_child_sp = m_nativeStorage->GetChildAtNamePath( {g_values,g__rawValue} ))
{
// it is fine not to pass a value_type, but if the value child exists, then you have to pass one
if (!value_type)
return;
m_values_ptr = value_child_sp->GetValueAsUnsigned(LLDB_INVALID_ADDRESS);
}
m_keys_ptr = m_nativeStorage->GetChildAtNamePath( {g_keys,g__rawValue} )->GetValueAsUnsigned(LLDB_INVALID_ADDRESS);
}
lldb_private::formatters::swift::HashedContainerSyntheticFrontEnd::HashedContainerSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get()),
m_buffer()
{
}
lldb::ExpressionResults
UserExpression::Evaluate (ExecutionContext &exe_ctx,
const EvaluateExpressionOptions& options,
const char *expr_cstr,
const char *expr_prefix,
lldb::ValueObjectSP &result_valobj_sp,
Error &error,
uint32_t line_offset,
std::string *fixed_expression,
lldb::ModuleSP *jit_module_sp_ptr)
{
Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_EXPRESSIONS | LIBLLDB_LOG_STEP));
lldb_private::ExecutionPolicy execution_policy = options.GetExecutionPolicy();
lldb::LanguageType language = options.GetLanguage();
const ResultType desired_type = options.DoesCoerceToId() ? UserExpression::eResultTypeId : UserExpression::eResultTypeAny;
lldb::ExpressionResults execution_results = lldb::eExpressionSetupError;
Target *target = exe_ctx.GetTargetPtr();
if (!target)
{
if (log)
log->Printf("== [UserExpression::Evaluate] Passed a NULL target, can't run expressions.");
return lldb::eExpressionSetupError;
}
Process *process = exe_ctx.GetProcessPtr();
if (process == NULL || process->GetState() != lldb::eStateStopped)
{
if (execution_policy == eExecutionPolicyAlways)
{
if (log)
log->Printf("== [UserExpression::Evaluate] Expression may not run, but is not constant ==");
error.SetErrorString ("expression needed to run but couldn't");
return execution_results;
}
}
if (process == NULL || !process->CanJIT())
execution_policy = eExecutionPolicyNever;
// We need to set the expression execution thread here, turns out parse can call functions in the process of
// looking up symbols, which will escape the context set by exe_ctx passed to Execute.
lldb::ThreadSP thread_sp = exe_ctx.GetThreadSP();
ThreadList::ExpressionExecutionThreadPusher execution_thread_pusher(thread_sp);
const char *full_prefix = NULL;
const char *option_prefix = options.GetPrefix();
std::string full_prefix_storage;
if (expr_prefix && option_prefix)
{
full_prefix_storage.assign(expr_prefix);
full_prefix_storage.append(option_prefix);
if (!full_prefix_storage.empty())
full_prefix = full_prefix_storage.c_str();
}
else if (expr_prefix)
full_prefix = expr_prefix;
else
full_prefix = option_prefix;
// If the language was not specified in the expression command,
// set it to the language in the target's properties if
// specified, else default to the langage for the frame.
if (language == lldb::eLanguageTypeUnknown)
{
if (target->GetLanguage() != lldb::eLanguageTypeUnknown)
language = target->GetLanguage();
else if (StackFrame *frame = exe_ctx.GetFramePtr())
language = frame->GetLanguage();
}
lldb::UserExpressionSP user_expression_sp(target->GetUserExpressionForLanguage (expr_cstr,
full_prefix,
language,
desired_type,
options,
error));
if (error.Fail())
{
if (log)
log->Printf ("== [UserExpression::Evaluate] Getting expression: %s ==", error.AsCString());
return lldb::eExpressionSetupError;
}
if (log)
log->Printf("== [UserExpression::Evaluate] Parsing expression %s ==", expr_cstr);
const bool keep_expression_in_memory = true;
const bool generate_debug_info = options.GetGenerateDebugInfo();
if (options.InvokeCancelCallback (lldb::eExpressionEvaluationParse))
{
error.SetErrorString ("expression interrupted by callback before parse");
result_valobj_sp = ValueObjectConstResult::Create(exe_ctx.GetBestExecutionContextScope(), error);
return lldb::eExpressionInterrupted;
}
DiagnosticManager diagnostic_manager;
bool parse_success = user_expression_sp->Parse(diagnostic_manager,
exe_ctx,
execution_policy,
keep_expression_in_memory,
generate_debug_info);
// Calculate the fixed expression always, since we need it for errors.
std::string tmp_fixed_expression;
if (fixed_expression == nullptr)
fixed_expression = &tmp_fixed_expression;
const char *fixed_text = user_expression_sp->GetFixedText();
if (fixed_text != nullptr)
fixed_expression->append(fixed_text);
// If there is a fixed expression, try to parse it:
if (!parse_success)
{
execution_results = lldb::eExpressionParseError;
if (fixed_expression && !fixed_expression->empty() && options.GetAutoApplyFixIts())
{
lldb::UserExpressionSP fixed_expression_sp(target->GetUserExpressionForLanguage (fixed_expression->c_str(),
full_prefix,
language,
desired_type,
options,
error));
DiagnosticManager fixed_diagnostic_manager;
parse_success = fixed_expression_sp->Parse(fixed_diagnostic_manager,
exe_ctx,
execution_policy,
keep_expression_in_memory,
generate_debug_info);
if (parse_success)
{
diagnostic_manager.Clear();
user_expression_sp = fixed_expression_sp;
}
else
{
// If the fixed expression failed to parse, don't tell the user about, that won't help.
fixed_expression->clear();
}
}
if (!parse_success)
{
if (!fixed_expression->empty() && target->GetEnableNotifyAboutFixIts())
{
error.SetExpressionErrorWithFormat(execution_results, "expression failed to parse, fixed expression suggested:\n %s",
fixed_expression->c_str());
}
else
{
if (!diagnostic_manager.Diagnostics().size())
error.SetExpressionError(execution_results, "expression failed to parse, unknown error");
else
error.SetExpressionError(execution_results, diagnostic_manager.GetString().c_str());
}
}
}
if (parse_success)
{
// If a pointer to a lldb::ModuleSP was passed in, return the JIT'ed module if one was created
if (jit_module_sp_ptr)
*jit_module_sp_ptr = user_expression_sp->GetJITModule();
lldb::ExpressionVariableSP expr_result;
if (execution_policy == eExecutionPolicyNever &&
!user_expression_sp->CanInterpret())
{
if (log)
log->Printf("== [UserExpression::Evaluate] Expression may not run, but is not constant ==");
if (!diagnostic_manager.Diagnostics().size())
error.SetExpressionError(lldb::eExpressionSetupError, "expression needed to run but couldn't");
}
else if (execution_policy == eExecutionPolicyTopLevel)
{
error.SetError(UserExpression::kNoResult, lldb::eErrorTypeGeneric);
return lldb::eExpressionCompleted;
}
else
{
if (options.InvokeCancelCallback (lldb::eExpressionEvaluationExecution))
{
error.SetExpressionError (lldb::eExpressionInterrupted, "expression interrupted by callback before execution");
result_valobj_sp = ValueObjectConstResult::Create (exe_ctx.GetBestExecutionContextScope(), error);
return lldb::eExpressionInterrupted;
}
diagnostic_manager.Clear();
if (log)
log->Printf("== [UserExpression::Evaluate] Executing expression ==");
execution_results =
user_expression_sp->Execute(diagnostic_manager, exe_ctx, options, user_expression_sp, expr_result);
if (execution_results != lldb::eExpressionCompleted)
{
if (log)
log->Printf("== [UserExpression::Evaluate] Execution completed abnormally ==");
if (!diagnostic_manager.Diagnostics().size())
error.SetExpressionError(execution_results, "expression failed to execute, unknown error");
else
error.SetExpressionError(execution_results, diagnostic_manager.GetString().c_str());
}
else
{
if (expr_result)
{
result_valobj_sp = expr_result->GetValueObject();
if (log)
log->Printf("== [UserExpression::Evaluate] Execution completed normally with result %s ==",
result_valobj_sp->GetValueAsCString());
}
else
{
if (log)
log->Printf("== [UserExpression::Evaluate] Execution completed normally with no result ==");
error.SetError(UserExpression::kNoResult, lldb::eErrorTypeGeneric);
}
}
}
}
if (options.InvokeCancelCallback(lldb::eExpressionEvaluationComplete))
{
error.SetExpressionError (lldb::eExpressionInterrupted, "expression interrupted by callback after complete");
return lldb::eExpressionInterrupted;
}
if (result_valobj_sp.get() == NULL)
{
result_valobj_sp = ValueObjectConstResult::Create (exe_ctx.GetBestExecutionContextScope(), error);
}
return execution_results;
}
lldb_private::formatters::NSDictionaryCodeRunningSyntheticFrontEnd::NSDictionaryCodeRunningSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get())
{}
ExecutionResults
ClangUserExpression::EvaluateWithError (ExecutionContext &exe_ctx,
lldb_private::ExecutionPolicy execution_policy,
lldb::LanguageType language,
ResultType desired_type,
bool unwind_on_error,
bool ignore_breakpoints,
const char *expr_cstr,
const char *expr_prefix,
lldb::ValueObjectSP &result_valobj_sp,
Error &error,
bool run_others,
uint32_t timeout_usec)
{
Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_EXPRESSIONS | LIBLLDB_LOG_STEP));
ExecutionResults execution_results = eExecutionSetupError;
Process *process = exe_ctx.GetProcessPtr();
if (process == NULL || process->GetState() != lldb::eStateStopped)
{
if (execution_policy == eExecutionPolicyAlways)
{
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Expression may not run, but is not constant ==");
error.SetErrorString ("expression needed to run but couldn't");
return execution_results;
}
}
if (process == NULL || !process->CanJIT())
execution_policy = eExecutionPolicyNever;
ClangUserExpressionSP user_expression_sp (new ClangUserExpression (expr_cstr, expr_prefix, language, desired_type));
StreamString error_stream;
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Parsing expression %s ==", expr_cstr);
const bool keep_expression_in_memory = true;
if (!user_expression_sp->Parse (error_stream, exe_ctx, execution_policy, keep_expression_in_memory))
{
if (error_stream.GetString().empty())
error.SetErrorString ("expression failed to parse, unknown error");
else
error.SetErrorString (error_stream.GetString().c_str());
}
else
{
lldb::ClangExpressionVariableSP expr_result;
if (execution_policy == eExecutionPolicyNever &&
!user_expression_sp->CanInterpret())
{
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Expression may not run, but is not constant ==");
if (error_stream.GetString().empty())
error.SetErrorString ("expression needed to run but couldn't");
}
else
{
error_stream.GetString().clear();
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Executing expression ==");
execution_results = user_expression_sp->Execute (error_stream,
exe_ctx,
unwind_on_error,
ignore_breakpoints,
user_expression_sp,
expr_result,
run_others,
timeout_usec);
if (execution_results != eExecutionCompleted)
{
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Execution completed abnormally ==");
if (error_stream.GetString().empty())
error.SetErrorString ("expression failed to execute, unknown error");
else
error.SetErrorString (error_stream.GetString().c_str());
}
else
{
if (expr_result)
{
result_valobj_sp = expr_result->GetValueObject();
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Execution completed normally with result %s ==", result_valobj_sp->GetValueAsCString());
}
else
{
if (log)
log->Printf("== [ClangUserExpression::Evaluate] Execution completed normally with no result ==");
error.SetError(ClangUserExpression::kNoResult, lldb::eErrorTypeGeneric);
}
}
}
}
if (result_valobj_sp.get() == NULL)
result_valobj_sp = ValueObjectConstResult::Create (NULL, error);
return execution_results;
}
ObjCClassSyntheticChildrenFrontEnd (lldb::ValueObjectSP valobj_sp) :
SyntheticChildrenFrontEnd(*valobj_sp.get())
{
}
Status ABISysV_ppc64::SetReturnValueObject(lldb::StackFrameSP &frame_sp,
lldb::ValueObjectSP &new_value_sp) {
Status error;
if (!new_value_sp) {
error.SetErrorString("Empty value object for return value.");
return error;
}
CompilerType compiler_type = new_value_sp->GetCompilerType();
if (!compiler_type) {
error.SetErrorString("Null clang type for return value.");
return error;
}
Thread *thread = frame_sp->GetThread().get();
bool is_signed;
uint32_t count;
bool is_complex;
RegisterContext *reg_ctx = thread->GetRegisterContext().get();
bool set_it_simple = false;
if (compiler_type.IsIntegerOrEnumerationType(is_signed) ||
compiler_type.IsPointerType()) {
const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName("r3", 0);
DataExtractor data;
Status data_error;
size_t num_bytes = new_value_sp->GetData(data, data_error);
if (data_error.Fail()) {
error.SetErrorStringWithFormat(
"Couldn't convert return value to raw data: %s",
data_error.AsCString());
return error;
}
lldb::offset_t offset = 0;
if (num_bytes <= 8) {
uint64_t raw_value = data.GetMaxU64(&offset, num_bytes);
if (reg_ctx->WriteRegisterFromUnsigned(reg_info, raw_value))
set_it_simple = true;
} else {
error.SetErrorString("We don't support returning longer than 64 bit "
"integer values at present.");
}
} else if (compiler_type.IsFloatingPointType(count, is_complex)) {
if (is_complex)
error.SetErrorString(
"We don't support returning complex values at present");
else {
size_t bit_width = compiler_type.GetBitSize(frame_sp.get());
if (bit_width <= 64) {
DataExtractor data;
Status data_error;
size_t num_bytes = new_value_sp->GetData(data, data_error);
if (data_error.Fail()) {
error.SetErrorStringWithFormat(
"Couldn't convert return value to raw data: %s",
data_error.AsCString());
return error;
}
unsigned char buffer[16];
ByteOrder byte_order = data.GetByteOrder();
data.CopyByteOrderedData(0, num_bytes, buffer, 16, byte_order);
set_it_simple = true;
} else {
// FIXME - don't know how to do 80 bit long doubles yet.
error.SetErrorString(
"We don't support returning float values > 64 bits at present");
}
}
}
if (!set_it_simple) {
// Okay we've got a structure or something that doesn't fit in a simple
// register.
// We should figure out where it really goes, but we don't support this yet.
error.SetErrorString("We only support setting simple integer and float "
"return types at present.");
}
return error;
}
