| //===-- ThreadPlanStepOverRange.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/ThreadPlanStepOverRange.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" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Target/Thread.h" |
| #include "lldb/Target/ThreadPlanStepOut.h" |
| #include "lldb/Target/ThreadPlanStepThrough.h" |
| |
| using namespace lldb_private; |
| using namespace lldb; |
| |
| |
| //---------------------------------------------------------------------- |
| // ThreadPlanStepOverRange: Step through a stack range, either stepping over or into |
| // based on the value of \a type. |
| //---------------------------------------------------------------------- |
| |
| ThreadPlanStepOverRange::ThreadPlanStepOverRange |
| ( |
| Thread &thread, |
| const AddressRange &range, |
| const SymbolContext &addr_context, |
| lldb::RunMode stop_others, |
| bool okay_to_discard |
| ) : |
| ThreadPlanStepRange (ThreadPlan::eKindStepOverRange, "Step range stepping over", thread, range, addr_context, stop_others) |
| { |
| // Step over range plans can be master plans, since you could hit a breakpoint while stepping over, step around |
| // a bit, then continue to finish up the step over. |
| SetIsMasterPlan (true); |
| SetOkayToDiscard (okay_to_discard); |
| } |
| |
| ThreadPlanStepOverRange::~ThreadPlanStepOverRange () |
| { |
| } |
| |
| void |
| ThreadPlanStepOverRange::GetDescription (Stream *s, lldb::DescriptionLevel level) |
| { |
| if (level == lldb::eDescriptionLevelBrief) |
| s->Printf("step over"); |
| else |
| { |
| s->Printf ("stepping through range (stepping over functions): "); |
| DumpRanges(s); |
| } |
| } |
| |
| bool |
| ThreadPlanStepOverRange::ShouldStop (Event *event_ptr) |
| { |
| LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); |
| |
| if (log) |
| { |
| StreamString s; |
| s.Address (m_thread.GetRegisterContext()->GetPC(), |
| m_thread.CalculateTarget()->GetArchitecture().GetAddressByteSize()); |
| log->Printf("ThreadPlanStepOverRange reached %s.", s.GetData()); |
| } |
| |
| // If we're out of the range but in the same frame or in our caller's frame |
| // then we should stop. |
| // When stepping out we only step if we are forcing running one thread. |
| bool stop_others; |
| if (m_stop_others == lldb::eOnlyThisThread) |
| stop_others = true; |
| else |
| stop_others = false; |
| |
| ThreadPlan* new_plan = NULL; |
| |
| FrameComparison frame_order = CompareCurrentFrameToStartFrame(); |
| |
| if (frame_order == eFrameCompareOlder) |
| { |
| // If we're in an older frame then we should stop. |
| // |
| // A caveat to this is if we think the frame is older but we're actually in a trampoline. |
| // I'm going to make the assumption that you wouldn't RETURN to a trampoline. So if we are |
| // in a trampoline we think the frame is older because the trampoline confused the backtracer. |
| // As below, we step through first, and then try to figure out how to get back out again. |
| |
| new_plan = m_thread.QueueThreadPlanForStepThrough (false, stop_others); |
| |
| if (new_plan != NULL && log) |
| log->Printf("Thought I stepped out, but in fact arrived at a trampoline."); |
| } |
| else if (frame_order == eFrameCompareYounger) |
| { |
| // Make sure we really are in a new frame. Do that by unwinding and seeing if the |
| // start function really is our start function... |
| StackFrameSP older_frame_sp = m_thread.GetStackFrameAtIndex(1); |
| |
| // But if we can't even unwind one frame we should just get out of here & stop... |
| if (older_frame_sp) |
| { |
| const SymbolContext &older_context = older_frame_sp->GetSymbolContext(eSymbolContextEverything); |
| if (older_context == m_addr_context) |
| { |
| new_plan = m_thread.QueueThreadPlanForStepOut (false, |
| NULL, |
| true, |
| stop_others, |
| eVoteNo, |
| eVoteNoOpinion, |
| 0); |
| } |
| else |
| { |
| new_plan = m_thread.QueueThreadPlanForStepThrough (false, stop_others); |
| |
| } |
| } |
| } |
| else |
| { |
| // If we're still in the range, keep going. |
| if (InRange()) |
| { |
| SetNextBranchBreakpoint(); |
| return false; |
| } |
| |
| |
| if (!InSymbol()) |
| { |
| // This one is a little tricky. Sometimes we may be in a stub or something similar, |
| // in which case we need to get out of there. But if we are in a stub then it's |
| // likely going to be hard to get out from here. It is probably easiest to step into the |
| // stub, and then it will be straight-forward to step out. |
| new_plan = m_thread.QueueThreadPlanForStepThrough (false, stop_others); |
| } |
| } |
| |
| // If we get to this point, we're not going to use a previously set "next branch" breakpoint, so delete it: |
| ClearNextBranchBreakpoint(); |
| |
| if (new_plan == NULL) |
| m_no_more_plans = true; |
| else |
| m_no_more_plans = false; |
| |
| if (new_plan == NULL) |
| { |
| // For efficiencies sake, we know we're done here so we don't have to do this |
| // calculation again in MischiefManaged. |
| SetPlanComplete(); |
| return true; |
| } |
| else |
| return false; |
| } |