diff options
Diffstat (limited to 'source/Target/ThreadPlanStepOverBreakpoint.cpp')
-rw-r--r-- | source/Target/ThreadPlanStepOverBreakpoint.cpp | 266 |
1 files changed, 123 insertions, 143 deletions
diff --git a/source/Target/ThreadPlanStepOverBreakpoint.cpp b/source/Target/ThreadPlanStepOverBreakpoint.cpp index da0326bfa914..39641a065482 100644 --- a/source/Target/ThreadPlanStepOverBreakpoint.cpp +++ b/source/Target/ThreadPlanStepOverBreakpoint.cpp @@ -22,172 +22,152 @@ using namespace lldb; using namespace lldb_private; //---------------------------------------------------------------------- -// ThreadPlanStepOverBreakpoint: Single steps over a breakpoint bp_site_sp at the pc. +// 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_reenabled_breakpoint_site (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 -ThreadPlanStepOverBreakpoint::DoPlanExplainsStop (Event *event_ptr) -{ - StopInfoSP stop_info_sp = GetPrivateStopInfo (); - if (stop_info_sp) - { - // It's a little surprising that we stop here for a breakpoint hit. However, when you single step ONTO a breakpoint - // we still want to call that a breakpoint hit, and trigger the actions, etc. Otherwise you would see the - // PC at the breakpoint without having triggered the actions, then you'd continue, the PC wouldn't change, - // and you'd see the breakpoint hit, which would be odd. - // So the lower levels fake "step onto breakpoint address" and return that as a breakpoint. So our trace - // step COULD appear as a breakpoint hit if the next instruction also contained a breakpoint. - StopReason reason = stop_info_sp->GetStopReason(); - - switch (reason) - { - case eStopReasonTrace: - case eStopReasonNone: - return true; - case eStopReasonBreakpoint: - // It's a little surprising that we stop here for a breakpoint hit. However, when you single step ONTO a - // breakpoint we still want to call that a breakpoint hit, and trigger the actions, etc. Otherwise you - // would see the PC at the breakpoint without having triggered the actions, then you'd continue, the PC - // wouldn't change, and you'd see the breakpoint hit, which would be odd. - // So the lower levels fake "step onto breakpoint address" and return that as a breakpoint hit. So our trace - // step COULD appear as a breakpoint hit if the next instruction also contained a breakpoint. We don't want - // to handle that, since we really don't know what to do with breakpoint hits. But make sure we don't set - // ourselves to auto-continue or we'll wrench control away from the plans that can deal with this. - SetAutoContinue(false); - return false; - default: - return false; - } +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_reenabled_breakpoint_site(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 ThreadPlanStepOverBreakpoint::DoPlanExplainsStop(Event *event_ptr) { + StopInfoSP stop_info_sp = GetPrivateStopInfo(); + if (stop_info_sp) { + // It's a little surprising that we stop here for a breakpoint hit. + // However, when you single step ONTO a breakpoint + // we still want to call that a breakpoint hit, and trigger the actions, + // etc. Otherwise you would see the + // PC at the breakpoint without having triggered the actions, then you'd + // continue, the PC wouldn't change, + // and you'd see the breakpoint hit, which would be odd. + // So the lower levels fake "step onto breakpoint address" and return that + // as a breakpoint. So our trace + // step COULD appear as a breakpoint hit if the next instruction also + // contained a breakpoint. + StopReason reason = stop_info_sp->GetStopReason(); + + switch (reason) { + case eStopReasonTrace: + case eStopReasonNone: + return true; + case eStopReasonBreakpoint: + // It's a little surprising that we stop here for a breakpoint hit. + // However, when you single step ONTO a + // breakpoint we still want to call that a breakpoint hit, and trigger the + // actions, etc. Otherwise you + // would see the PC at the breakpoint without having triggered the + // actions, then you'd continue, the PC + // wouldn't change, and you'd see the breakpoint hit, which would be odd. + // So the lower levels fake "step onto breakpoint address" and return that + // as a breakpoint hit. So our trace + // step COULD appear as a breakpoint hit if the next instruction also + // contained a breakpoint. We don't want + // to handle that, since we really don't know what to do with breakpoint + // hits. But make sure we don't set + // ourselves to auto-continue or we'll wrench control away from the plans + // that can deal with this. + SetAutoContinue(false); + return false; + default: + return false; } - return false; + } + return false; } -bool -ThreadPlanStepOverBreakpoint::ShouldStop (Event *event_ptr) -{ - return !ShouldAutoContinue(event_ptr); +bool ThreadPlanStepOverBreakpoint::ShouldStop(Event *event_ptr) { + return !ShouldAutoContinue(event_ptr); } -bool -ThreadPlanStepOverBreakpoint::StopOthers () -{ - return true; -} +bool ThreadPlanStepOverBreakpoint::StopOthers() { return true; } -StateType -ThreadPlanStepOverBreakpoint::GetPlanRunState () -{ - return eStateStepping; +StateType ThreadPlanStepOverBreakpoint::GetPlanRunState() { + return eStateStepping; } -bool -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::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 () -{ - ReenableBreakpointSite (); - return true; +bool ThreadPlanStepOverBreakpoint::WillStop() { + ReenableBreakpointSite(); + return true; } -bool -ThreadPlanStepOverBreakpoint::MischiefManaged () -{ - lldb::addr_t pc_addr = m_thread.GetRegisterContext()->GetPC(); +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. - ReenableBreakpointSite (); - ThreadPlan::MischiefManaged (); - return true; - } + 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. + ReenableBreakpointSite(); + ThreadPlan::MischiefManaged(); + return true; + } } -void -ThreadPlanStepOverBreakpoint::ReenableBreakpointSite () -{ - if (!m_reenabled_breakpoint_site) - { - m_reenabled_breakpoint_site = true; - BreakpointSiteSP bp_site_sp (m_thread.GetProcess()->GetBreakpointSiteList().FindByAddress (m_breakpoint_addr)); - if (bp_site_sp) - { - m_thread.GetProcess()->EnableBreakpointSite (bp_site_sp.get()); - } +void ThreadPlanStepOverBreakpoint::ReenableBreakpointSite() { + if (!m_reenabled_breakpoint_site) { + m_reenabled_breakpoint_site = true; + BreakpointSiteSP bp_site_sp( + m_thread.GetProcess()->GetBreakpointSiteList().FindByAddress( + m_breakpoint_addr)); + if (bp_site_sp) { + m_thread.GetProcess()->EnableBreakpointSite(bp_site_sp.get()); } + } } -void -ThreadPlanStepOverBreakpoint::ThreadDestroyed () -{ - ReenableBreakpointSite (); +void ThreadPlanStepOverBreakpoint::ThreadDestroyed() { + ReenableBreakpointSite(); } -void -ThreadPlanStepOverBreakpoint::SetAutoContinue (bool do_it) -{ - m_auto_continue = do_it; +void ThreadPlanStepOverBreakpoint::SetAutoContinue(bool do_it) { + m_auto_continue = do_it; } -bool -ThreadPlanStepOverBreakpoint::ShouldAutoContinue (Event *event_ptr) -{ - return m_auto_continue; +bool ThreadPlanStepOverBreakpoint::ShouldAutoContinue(Event *event_ptr) { + return m_auto_continue; } -bool -ThreadPlanStepOverBreakpoint::IsPlanStale() -{ - return m_thread.GetRegisterContext()->GetPC() != m_breakpoint_addr; +bool ThreadPlanStepOverBreakpoint::IsPlanStale() { + return m_thread.GetRegisterContext()->GetPC() != m_breakpoint_addr; } - |