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

#ifndef lldb_RegisterContextMacOSXFrameBackchain_h_
#define lldb_RegisterContextMacOSXFrameBackchain_h_

// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/lldb-private.h"
#include "lldb/Target/RegisterContext.h"

#include "UnwindMacOSXFrameBackchain.h"

class RegisterContextMacOSXFrameBackchain : public lldb_private::RegisterContext
{
public:
    RegisterContextMacOSXFrameBackchain (lldb_private::Thread &thread,
                                         uint32_t concrete_frame_idx,
                                         const UnwindMacOSXFrameBackchain::Cursor &cursor);

    ~RegisterContextMacOSXFrameBackchain() override;

    void
    InvalidateAllRegisters() override;

    size_t
    GetRegisterCount() override;

    const lldb_private::RegisterInfo *
    GetRegisterInfoAtIndex(size_t reg) override;

    size_t
    GetRegisterSetCount() override;

    const lldb_private::RegisterSet *
    GetRegisterSet(size_t reg_set) override;

    bool
    ReadRegister(const lldb_private::RegisterInfo *reg_info,
                 lldb_private::RegisterValue &value) override;

    bool
    WriteRegister(const lldb_private::RegisterInfo *reg_info,
                  const lldb_private::RegisterValue &value) override;
    
    bool
    ReadAllRegisterValues(lldb::DataBufferSP &data_sp) override;

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

    uint32_t
    ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind, uint32_t num) override;
    
private:
    UnwindMacOSXFrameBackchain::Cursor m_cursor;
    bool m_cursor_is_valid;

    DISALLOW_COPY_AND_ASSIGN (RegisterContextMacOSXFrameBackchain);
};

#endif // lldb_RegisterContextMacOSXFrameBackchain_h_