File: NativeRegisterContextWindows_WoW64.h

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//===-- NativeRegisterContextWindows_WoW64.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
//
//===----------------------------------------------------------------------===//

#if defined(__x86_64__) || defined(_M_X64)
#ifndef liblldb_NativeRegisterContextWindows_WoW64_h_
#define liblldb_NativeRegisterContextWindows_WoW64_h_

#include "Plugins/Process/Utility/RegisterContext_x86.h"
#include "Plugins/Process/Utility/lldb-x86-register-enums.h"

#include "NativeRegisterContextWindows.h"

namespace lldb_private {

class NativeThreadWindows;

class NativeRegisterContextWindows_WoW64 : public NativeRegisterContextWindows {
public:
  NativeRegisterContextWindows_WoW64(const ArchSpec &target_arch,
                                     NativeThreadProtocol &native_thread);

  uint32_t GetRegisterSetCount() const override;

  const RegisterSet *GetRegisterSet(uint32_t set_index) const override;

  Status ReadRegister(const RegisterInfo *reg_info,
                      RegisterValue &reg_value) override;

  Status WriteRegister(const RegisterInfo *reg_info,
                       const RegisterValue &reg_value) override;

  Status ReadAllRegisterValues(lldb::WritableDataBufferSP &data_sp) override;

  Status WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override;

  Status IsWatchpointHit(uint32_t wp_index, bool &is_hit) override;

  Status GetWatchpointHitIndex(uint32_t &wp_index,
                               lldb::addr_t trap_addr) override;

  Status IsWatchpointVacant(uint32_t wp_index, bool &is_vacant) override;

  bool ClearHardwareWatchpoint(uint32_t wp_index) override;

  Status ClearAllHardwareWatchpoints() override;

  uint32_t SetHardwareWatchpoint(lldb::addr_t addr, size_t size,
                                 uint32_t watch_flags) override;

  lldb::addr_t GetWatchpointAddress(uint32_t wp_index) override;

  uint32_t NumSupportedHardwareWatchpoints() override;

protected:
  Status GPRRead(const uint32_t reg, RegisterValue &reg_value);
  Status GPRWrite(const uint32_t reg, const RegisterValue &reg_value);

  Status DRRead(const uint32_t reg, RegisterValue &reg_value);
  Status DRWrite(const uint32_t reg, const RegisterValue &reg_value);

private:
  Status ApplyHardwareBreakpoint(uint32_t wp_index, lldb::addr_t addr,
                                 size_t size, uint32_t flags);

  bool IsGPR(uint32_t reg_index) const;
  bool IsDR(uint32_t reg_index) const;
};

} // namespace lldb_private

#endif // liblldb_NativeRegisterContextWindows_WoW64_h_
#endif // defined(__x86_64__) || defined(_M_X64)