llvm-project/lldb/source/Target/ThreadPlanStepOverBreakpoin...

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//===-- ThreadPlanStepOverBreakpoint.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/Target/ThreadPlanStepOverBreakpoint.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/lldb-private-log.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/Stream.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/RegisterContext.h"
using namespace lldb;
using namespace lldb_private;
//----------------------------------------------------------------------
// ThreadPlanStepOverBreakpoint: Single steps over a breakpoint bp_site_sp at the pc.
//----------------------------------------------------------------------
ThreadPlanStepOverBreakpoint::ThreadPlanStepOverBreakpoint (Thread &thread) :
ThreadPlan (ThreadPlan::eKindStepOverBreakpoint, "Step over breakpoint trap",
thread,
eVoteNo,
eVoteNoOpinion), // We need to report the run since this happens
// first in the thread plan stack when stepping
// over a breakpoint
m_breakpoint_addr (LLDB_INVALID_ADDRESS),
m_auto_continue(false)
{
m_breakpoint_addr = m_thread.GetRegisterContext()->GetPC();
m_breakpoint_site_id = m_thread.GetProcess()->GetBreakpointSiteList().FindIDByAddress (m_breakpoint_addr);
}
ThreadPlanStepOverBreakpoint::~ThreadPlanStepOverBreakpoint ()
{
}
void
ThreadPlanStepOverBreakpoint::GetDescription (Stream *s, lldb::DescriptionLevel level)
{
s->Printf("Single stepping past breakpoint site %" PRIu64 " at 0x%" PRIx64, m_breakpoint_site_id, (uint64_t)m_breakpoint_addr);
}
bool
ThreadPlanStepOverBreakpoint::ValidatePlan (Stream *error)
{
return true;
}
bool
Figure out the reply to "PlanExplainsStop" once when we stop and then use the cached value. This fixes problems, for instance, with the StepRange plans, where they know that they explained the stop because they were at their "run to here" breakpoint, then deleted that breakpoint, so when they got asked again, doh! I had done this for a couple of plans in an ad hoc fashion, this just formalizes it. Also add a "ResumeRequested" in Process so that the code in the completion handlers can tell the ShouldStop logic they want to resume rather than just directly resuming. That allows us to handle resuming in a more controlled fashion. Also, SetPublicState can take a "restarted" flag, so that it doesn't drop the run lock when the target was immediately restarted. --This line, and those below , will be ignored-- M test/lang/objc/objc-dynamic-value/TestObjCDynamicValue.py M include/lldb/Target/ThreadList.h M include/lldb/Target/ThreadPlanStepOut.h M include/lldb/Target/Thread.h M include/lldb/Target/ThreadPlanBase.h M include/lldb/Target/ThreadPlanStepThrough.h M include/lldb/Target/ThreadPlanStepInstruction.h M include/lldb/Target/ThreadPlanStepInRange.h M include/lldb/Target/ThreadPlanStepOverBreakpoint.h M include/lldb/Target/ThreadPlanStepUntil.h M include/lldb/Target/StopInfo.h M include/lldb/Target/Process.h M include/lldb/Target/ThreadPlanRunToAddress.h M include/lldb/Target/ThreadPlan.h M include/lldb/Target/ThreadPlanCallFunction.h M include/lldb/Target/ThreadPlanStepOverRange.h M source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleThreadPlanStepThroughObjCTrampoline.h M source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleThreadPlanStepThroughObjCTrampoline.cpp M source/Target/StopInfo.cpp M source/Target/Process.cpp M source/Target/ThreadPlanRunToAddress.cpp M source/Target/ThreadPlan.cpp M source/Target/ThreadPlanCallFunction.cpp M source/Target/ThreadPlanStepOverRange.cpp M source/Target/ThreadList.cpp M source/Target/ThreadPlanStepOut.cpp M source/Target/Thread.cpp M source/Target/ThreadPlanBase.cpp M source/Target/ThreadPlanStepThrough.cpp M source/Target/ThreadPlanStepInstruction.cpp M source/Target/ThreadPlanStepInRange.cpp M source/Target/ThreadPlanStepOverBreakpoint.cpp M source/Target/ThreadPlanStepUntil.cpp M lldb.xcodeproj/xcshareddata/xcschemes/Run Testsuite.xcscheme llvm-svn: 181381
2013-05-08 08:35:16 +08:00
ThreadPlanStepOverBreakpoint::DoPlanExplainsStop (Event *event_ptr)
{
StopInfoSP stop_info_sp = GetPrivateStopReason();
if (stop_info_sp)
{
StopReason reason = stop_info_sp->GetStopReason();
if (reason == eStopReasonTrace || reason == eStopReasonNone)
return true;
else
return false;
}
return false;
}
bool
ThreadPlanStepOverBreakpoint::ShouldStop (Event *event_ptr)
{
return false;
}
bool
ThreadPlanStepOverBreakpoint::StopOthers ()
{
return true;
}
StateType
ThreadPlanStepOverBreakpoint::GetPlanRunState ()
{
return eStateStepping;
}
bool
Figure out the reply to "PlanExplainsStop" once when we stop and then use the cached value. This fixes problems, for instance, with the StepRange plans, where they know that they explained the stop because they were at their "run to here" breakpoint, then deleted that breakpoint, so when they got asked again, doh! I had done this for a couple of plans in an ad hoc fashion, this just formalizes it. Also add a "ResumeRequested" in Process so that the code in the completion handlers can tell the ShouldStop logic they want to resume rather than just directly resuming. That allows us to handle resuming in a more controlled fashion. Also, SetPublicState can take a "restarted" flag, so that it doesn't drop the run lock when the target was immediately restarted. --This line, and those below , will be ignored-- M test/lang/objc/objc-dynamic-value/TestObjCDynamicValue.py M include/lldb/Target/ThreadList.h M include/lldb/Target/ThreadPlanStepOut.h M include/lldb/Target/Thread.h M include/lldb/Target/ThreadPlanBase.h M include/lldb/Target/ThreadPlanStepThrough.h M include/lldb/Target/ThreadPlanStepInstruction.h M include/lldb/Target/ThreadPlanStepInRange.h M include/lldb/Target/ThreadPlanStepOverBreakpoint.h M include/lldb/Target/ThreadPlanStepUntil.h M include/lldb/Target/StopInfo.h M include/lldb/Target/Process.h M include/lldb/Target/ThreadPlanRunToAddress.h M include/lldb/Target/ThreadPlan.h M include/lldb/Target/ThreadPlanCallFunction.h M include/lldb/Target/ThreadPlanStepOverRange.h M source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleThreadPlanStepThroughObjCTrampoline.h M source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleThreadPlanStepThroughObjCTrampoline.cpp M source/Target/StopInfo.cpp M source/Target/Process.cpp M source/Target/ThreadPlanRunToAddress.cpp M source/Target/ThreadPlan.cpp M source/Target/ThreadPlanCallFunction.cpp M source/Target/ThreadPlanStepOverRange.cpp M source/Target/ThreadList.cpp M source/Target/ThreadPlanStepOut.cpp M source/Target/Thread.cpp M source/Target/ThreadPlanBase.cpp M source/Target/ThreadPlanStepThrough.cpp M source/Target/ThreadPlanStepInstruction.cpp M source/Target/ThreadPlanStepInRange.cpp M source/Target/ThreadPlanStepOverBreakpoint.cpp M source/Target/ThreadPlanStepUntil.cpp M lldb.xcodeproj/xcshareddata/xcschemes/Run Testsuite.xcscheme llvm-svn: 181381
2013-05-08 08:35:16 +08:00
ThreadPlanStepOverBreakpoint::DoWillResume (StateType resume_state, bool current_plan)
{
if (current_plan)
{
BreakpointSiteSP bp_site_sp (m_thread.GetProcess()->GetBreakpointSiteList().FindByAddress (m_breakpoint_addr));
if (bp_site_sp && bp_site_sp->IsEnabled())
m_thread.GetProcess()->DisableBreakpointSite (bp_site_sp.get());
}
return true;
}
bool
ThreadPlanStepOverBreakpoint::WillStop ()
{
BreakpointSiteSP bp_site_sp (m_thread.GetProcess()->GetBreakpointSiteList().FindByAddress (m_breakpoint_addr));
if (bp_site_sp)
m_thread.GetProcess()->EnableBreakpointSite (bp_site_sp.get());
return true;
}
bool
ThreadPlanStepOverBreakpoint::MischiefManaged ()
{
lldb::addr_t pc_addr = m_thread.GetRegisterContext()->GetPC();
if (pc_addr == m_breakpoint_addr)
{
// If we are still at the PC of our breakpoint, then for some reason we didn't
// get a chance to run.
return false;
}
else
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP));
if (log)
log->Printf("Completed step over breakpoint plan.");
// Otherwise, re-enable the breakpoint we were stepping over, and we're done.
BreakpointSiteSP bp_site_sp (m_thread.GetProcess()->GetBreakpointSiteList().FindByAddress (m_breakpoint_addr));
if (bp_site_sp)
m_thread.GetProcess()->EnableBreakpointSite (bp_site_sp.get());
ThreadPlan::MischiefManaged ();
return true;
}
}
void
ThreadPlanStepOverBreakpoint::SetAutoContinue (bool do_it)
{
m_auto_continue = do_it;
}
bool
ThreadPlanStepOverBreakpoint::ShouldAutoContinue (Event *event_ptr)
{
return m_auto_continue;
}