bool
ThreadPlanCallFunction::BreakpointsExplainStop()
{
StopInfoSP stop_info_sp = GetPrivateStopInfo ();
if (stop_info_sp->GetStopReason() != eStopReasonBreakpoint)
return false;
if (m_trap_exceptions)
{
if ((m_cxx_language_runtime &&
m_cxx_language_runtime->ExceptionBreakpointsExplainStop(stop_info_sp))
||(m_objc_language_runtime &&
m_objc_language_runtime->ExceptionBreakpointsExplainStop(stop_info_sp)))
{
Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STEP));
if (log)
log->Printf ("ThreadPlanCallFunction::BreakpointsExplainStop - Hit an exception breakpoint, setting plan complete.");
SetPlanComplete(false);
// If the user has set the ObjC language breakpoint, it would normally get priority over our internal
// catcher breakpoint, but in this case we can't let that happen, so force the ShouldStop here.
stop_info_sp->OverrideShouldStop (true);
return true;
}
}
if (m_error_backstop_bp_sp)
{
ProcessSP process_sp (m_thread.CalculateProcess());
if (process_sp)
{
uint64_t break_site_id = stop_info_sp->GetValue();
if (process_sp->GetBreakpointSiteList().BreakpointSiteContainsBreakpoint (break_site_id,
m_error_backstop_bp_sp->GetID()))
{
// Our expression threw an uncaught exception. That will happen in REPL & Playground, though not in
// the regular expression parser. In that case, we should fetch the actual return value from the
// argument passed to this function, and set that as the return value.
SetPlanComplete(true);
StackFrameSP frame_sp = m_thread.GetStackFrameAtIndex(0);
PersistentExpressionState *persistent_state = GetTarget().GetPersistentExpressionStateForLanguage(eLanguageTypeSwift);
const bool is_error = true;
ConstString persistent_variable_name (persistent_state->GetNextPersistentVariableName(is_error));
m_return_valobj_sp = SwiftLanguageRuntime::CalculateErrorValueFromFirstArgument(frame_sp,
persistent_variable_name);
DataExtractor data;
Error data_error;
size_t data_size = m_return_valobj_sp->GetStaticValue()->GetData(data, data_error);
if (data_size == data.GetAddressByteSize())
{
lldb::offset_t offset = 0;
lldb::addr_t addr = data.GetAddress(&offset);
SwiftLanguageRuntime::RegisterGlobalError(GetTarget(), persistent_variable_name, addr);
}
m_hit_error_backstop = true;
return true;
}
}
}
return false;
}
