1 //===-- ThreadPlanStepOverBreakpoint.cpp ------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "lldb/Target/ThreadPlanStepOverBreakpoint.h"
14 // Other libraries and framework includes
16 #include "lldb/lldb-private-log.h"
17 #include "lldb/Core/Log.h"
18 #include "lldb/Core/Stream.h"
19 #include "lldb/Target/Process.h"
20 #include "lldb/Target/RegisterContext.h"
23 using namespace lldb_private;
25 //----------------------------------------------------------------------
26 // ThreadPlanStepOverBreakpoint: Single steps over a breakpoint bp_site_sp at the pc.
27 //----------------------------------------------------------------------
29 ThreadPlanStepOverBreakpoint::ThreadPlanStepOverBreakpoint (Thread &thread) :
30 ThreadPlan (ThreadPlan::eKindStepOverBreakpoint, "Step over breakpoint trap",
33 eVoteNoOpinion), // We need to report the run since this happens
34 // first in the thread plan stack when stepping
36 m_breakpoint_addr (LLDB_INVALID_ADDRESS),
37 m_auto_continue(false),
38 m_reenabled_breakpoint_site (false)
41 m_breakpoint_addr = m_thread.GetRegisterContext()->GetPC();
42 m_breakpoint_site_id = m_thread.GetProcess()->GetBreakpointSiteList().FindIDByAddress (m_breakpoint_addr);
45 ThreadPlanStepOverBreakpoint::~ThreadPlanStepOverBreakpoint ()
50 ThreadPlanStepOverBreakpoint::GetDescription (Stream *s, lldb::DescriptionLevel level)
52 s->Printf("Single stepping past breakpoint site %" PRIu64 " at 0x%" PRIx64, m_breakpoint_site_id, (uint64_t)m_breakpoint_addr);
56 ThreadPlanStepOverBreakpoint::ValidatePlan (Stream *error)
62 ThreadPlanStepOverBreakpoint::DoPlanExplainsStop (Event *event_ptr)
64 StopInfoSP stop_info_sp = GetPrivateStopInfo ();
67 StopReason reason = stop_info_sp->GetStopReason();
68 if (reason == eStopReasonTrace || reason == eStopReasonNone)
77 ThreadPlanStepOverBreakpoint::ShouldStop (Event *event_ptr)
83 ThreadPlanStepOverBreakpoint::StopOthers ()
89 ThreadPlanStepOverBreakpoint::GetPlanRunState ()
91 return eStateStepping;
95 ThreadPlanStepOverBreakpoint::DoWillResume (StateType resume_state, bool current_plan)
99 BreakpointSiteSP bp_site_sp (m_thread.GetProcess()->GetBreakpointSiteList().FindByAddress (m_breakpoint_addr));
100 if (bp_site_sp && bp_site_sp->IsEnabled())
101 m_thread.GetProcess()->DisableBreakpointSite (bp_site_sp.get());
107 ThreadPlanStepOverBreakpoint::WillStop ()
109 ReenableBreakpointSite ();
114 ThreadPlanStepOverBreakpoint::MischiefManaged ()
116 lldb::addr_t pc_addr = m_thread.GetRegisterContext()->GetPC();
118 if (pc_addr == m_breakpoint_addr)
120 // If we are still at the PC of our breakpoint, then for some reason we didn't
121 // get a chance to run.
126 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP));
128 log->Printf("Completed step over breakpoint plan.");
129 // Otherwise, re-enable the breakpoint we were stepping over, and we're done.
130 ReenableBreakpointSite ();
131 ThreadPlan::MischiefManaged ();
137 ThreadPlanStepOverBreakpoint::ReenableBreakpointSite ()
139 if (!m_reenabled_breakpoint_site)
141 m_reenabled_breakpoint_site = true;
142 BreakpointSiteSP bp_site_sp (m_thread.GetProcess()->GetBreakpointSiteList().FindByAddress (m_breakpoint_addr));
145 m_thread.GetProcess()->EnableBreakpointSite (bp_site_sp.get());
150 ThreadPlanStepOverBreakpoint::ThreadDestroyed ()
152 ReenableBreakpointSite ();
156 ThreadPlanStepOverBreakpoint::SetAutoContinue (bool do_it)
158 m_auto_continue = do_it;
162 ThreadPlanStepOverBreakpoint::ShouldAutoContinue (Event *event_ptr)
164 return m_auto_continue;