StoppointSite.h

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//===-- StoppointSite.h -----------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#ifndef LLDB_BREAKPOINT_STOPPOINTSITE_H
#define LLDB_BREAKPOINT_STOPPOINTSITE_H
 
#include "lldb/Breakpoint/StoppointHitCounter.h"
#include "lldb/Utility/UserID.h"
#include "lldb/lldb-private.h"
 
namespace lldb_private {
 
class StoppointSite {
public:
  StoppointSite(lldb::break_id_t bid, lldb::addr_t m_addr, bool hardware);
 
  StoppointSite(lldb::break_id_t bid, lldb::addr_t m_addr,
                uint32_t byte_size, bool hardware);
 
  virtual ~StoppointSite() = default;
 
  virtual lldb::addr_t GetLoadAddress() const { return m_addr; }
 
  virtual void SetLoadAddress(lldb::addr_t addr) { m_addr = addr; }
 
  uint32_t GetByteSize() const { return m_byte_size; }
 
  uint32_t GetHitCount() const { return m_hit_counter.GetValue(); }
 
  void ResetHitCount() { m_hit_counter.Reset(); }
 
  bool HardwareRequired() const { return m_is_hardware_required; }
 
  virtual bool IsHardware() const = 0;
 
  virtual bool ShouldStop(StoppointCallbackContext *context) { return false; };
 
  virtual bool ShouldStop(StoppointCallbackContext *context,
                          BreakpointLocationCollection &stopping_bp_locs) {
    return false;
  };
 
  virtual void Dump(Stream* stream) const = 0;
 
  lldb::break_id_t GetID() const { return m_id; }
 
protected:
  /// Stoppoint site ID.
  lldb::break_id_t m_id;
 
  /// The load address of this stop point.
  lldb::addr_t m_addr;
 
  /// True if this point is required to use hardware (which may fail due to
  /// the lack of resources).
  bool m_is_hardware_required;
 
  /// The size in bytes of stoppoint, e.g. the length of the trap opcode for
  /// software breakpoints, or the optional length in bytes for hardware
  /// breakpoints, or the length of the watchpoint.
  uint32_t m_byte_size;
 
  /// Number of times this breakpoint/watchpoint has been hit.
  StoppointHitCounter m_hit_counter;
 
private:
  StoppointSite(const StoppointSite &) = delete;
  const StoppointSite &operator=(const StoppointSite &) = delete;
  StoppointSite() = delete;
};
 
} // namespace lldb_private
 
#endif // LLDB_BREAKPOINT_STOPPOINTSITE_H