144 lines
4.0 KiB
C++
144 lines
4.0 KiB
C++
//===-- ThreadPlanStepOverBreakpoint.cpp ------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Target/ThreadPlanStepOverBreakpoint.h"
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// C Includes
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "lldb/lldb-private-log.h"
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#include "lldb/Core/Log.h"
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#include "lldb/Core/Stream.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/RegisterContext.h"
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using namespace lldb;
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using namespace lldb_private;
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//----------------------------------------------------------------------
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// ThreadPlanStepOverBreakpoint: Single steps over a breakpoint bp_site_sp at the pc.
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//----------------------------------------------------------------------
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ThreadPlanStepOverBreakpoint::ThreadPlanStepOverBreakpoint (Thread &thread) :
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ThreadPlan (ThreadPlan::eKindStepOverBreakpoint, "Step over breakpoint trap",
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thread,
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eVoteNo,
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eVoteNoOpinion), // We need to report the run since this happens
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// first in the thread plan stack when stepping
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// over a breakpoint
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m_breakpoint_addr (LLDB_INVALID_ADDRESS),
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m_auto_continue(false)
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{
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m_breakpoint_addr = m_thread.GetRegisterContext()->GetPC();
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m_breakpoint_site_id = m_thread.GetProcess().GetBreakpointSiteList().FindIDByAddress (m_breakpoint_addr);
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}
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ThreadPlanStepOverBreakpoint::~ThreadPlanStepOverBreakpoint ()
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{
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}
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void
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ThreadPlanStepOverBreakpoint::GetDescription (Stream *s, lldb::DescriptionLevel level)
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{
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s->Printf("Single stepping past breakpoint site %d at 0x%llx", m_breakpoint_site_id, (uint64_t)m_breakpoint_addr);
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}
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bool
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ThreadPlanStepOverBreakpoint::ValidatePlan (Stream *error)
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{
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return true;
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}
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bool
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ThreadPlanStepOverBreakpoint::PlanExplainsStop ()
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{
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return true;
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}
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bool
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ThreadPlanStepOverBreakpoint::ShouldStop (Event *event_ptr)
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{
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return false;
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}
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bool
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ThreadPlanStepOverBreakpoint::StopOthers ()
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{
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return true;
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}
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StateType
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ThreadPlanStepOverBreakpoint::GetPlanRunState ()
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{
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return eStateStepping;
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}
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bool
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ThreadPlanStepOverBreakpoint::WillResume (StateType resume_state, bool current_plan)
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{
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ThreadPlan::WillResume (resume_state, current_plan);
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if (current_plan)
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{
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BreakpointSiteSP bp_site_sp (m_thread.GetProcess().GetBreakpointSiteList().FindByAddress (m_breakpoint_addr));
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if (bp_site_sp && bp_site_sp->IsEnabled())
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m_thread.GetProcess().DisableBreakpoint (bp_site_sp.get());
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}
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return true;
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}
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bool
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ThreadPlanStepOverBreakpoint::WillStop ()
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{
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BreakpointSiteSP bp_site_sp (m_thread.GetProcess().GetBreakpointSiteList().FindByAddress (m_breakpoint_addr));
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if (bp_site_sp)
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m_thread.GetProcess().EnableBreakpoint (bp_site_sp.get());
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return true;
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}
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bool
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ThreadPlanStepOverBreakpoint::MischiefManaged ()
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{
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lldb::addr_t pc_addr = m_thread.GetRegisterContext()->GetPC();
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if (pc_addr == m_breakpoint_addr)
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{
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// If we are still at the PC of our breakpoint, then for some reason we didn't
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// get a chance to run.
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return false;
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}
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else
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{
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LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP));
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if (log)
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log->Printf("Completed step over breakpoint plan.");
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// Otherwise, re-enable the breakpoint we were stepping over, and we're done.
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BreakpointSiteSP bp_site_sp (m_thread.GetProcess().GetBreakpointSiteList().FindByAddress (m_breakpoint_addr));
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if (bp_site_sp)
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m_thread.GetProcess().EnableBreakpoint (bp_site_sp.get());
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ThreadPlan::MischiefManaged ();
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return true;
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}
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}
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void
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ThreadPlanStepOverBreakpoint::SetAutoContinue (bool do_it)
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{
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m_auto_continue = do_it;
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}
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bool
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ThreadPlanStepOverBreakpoint::ShouldAutoContinue (Event *event_ptr)
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{
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return m_auto_continue;
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}
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