xref: /freebsd-11-stable/contrib/llvm-project/lldb/include/lldb/Target/ThreadPlanStepRange.h

//===-- ThreadPlanStepRange.h -----------------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef liblldb_ThreadPlanStepRange_h_
#define liblldb_ThreadPlanStepRange_h_

// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/Core/AddressRange.h"
#include "lldb/Target/StackID.h"
#include "lldb/Target/Thread.h"
#include "lldb/Target/ThreadPlan.h"
#include "lldb/Target/ThreadPlanShouldStopHere.h"

namespace lldb_private {

class ThreadPlanStepRange : public ThreadPlan
{
public:
    ThreadPlanStepRange (ThreadPlanKind kind,
                         const char *name,
                         Thread &thread,
                         const AddressRange &range,
                         const SymbolContext &addr_context,
                         lldb::RunMode stop_others);

    virtual ~ThreadPlanStepRange ();

    virtual void GetDescription (Stream *s, lldb::DescriptionLevel level) = 0;
    virtual bool ValidatePlan (Stream *error);
    virtual bool ShouldStop (Event *event_ptr) = 0;
    virtual Vote ShouldReportStop (Event *event_ptr);
    virtual bool StopOthers ();
    virtual lldb::StateType GetPlanRunState ();
    virtual bool WillStop ();
    virtual bool MischiefManaged ();
    virtual void DidPush ();
    virtual bool IsPlanStale ();


    void AddRange(const AddressRange &new_range);

protected:

    bool InRange();
    lldb::FrameComparison CompareCurrentFrameToStartFrame();
    bool InSymbol();
    void DumpRanges (Stream *s);

    Disassembler *
    GetDisassembler ();

    InstructionList *
    GetInstructionsForAddress(lldb::addr_t addr, size_t &range_index, size_t &insn_offset);

    // Pushes a plan to proceed through the next section of instructions in the range - usually just a RunToAddress
    // plan to run to the next branch.  Returns true if it pushed such a plan.  If there was no available 'quick run'
    // plan, then just single step.
    bool
    SetNextBranchBreakpoint ();

    void
    ClearNextBranchBreakpoint();

    bool
    NextRangeBreakpointExplainsStop (lldb::StopInfoSP stop_info_sp);

    SymbolContext             m_addr_context;
    std::vector<AddressRange> m_address_ranges;
    lldb::RunMode             m_stop_others;
    StackID                   m_stack_id;        // Use the stack ID so we can tell step out from step in.
    bool                      m_no_more_plans;   // Need this one so we can tell if we stepped into a call,
                                                 // but can't continue, in which case we are done.
    bool                      m_first_run_event; // We want to broadcast only one running event, our first.
    lldb::BreakpointSP        m_next_branch_bp_sp;
    bool                      m_use_fast_step;

private:
    std::vector<lldb::DisassemblerSP> m_instruction_ranges;
    DISALLOW_COPY_AND_ASSIGN (ThreadPlanStepRange);

};

} // namespace lldb_private

#endif  // liblldb_ThreadPlanStepRange_h_