//===-- RegisterContextCorePOSIX_x86_64.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/Core/DataExtractor.h"
#include "lldb/Core/RegisterValue.h"
#include "lldb/Target/Thread.h"
#include "Plugins/Process/Utility/RegisterContextPOSIX.h"
#include "RegisterContextPOSIXCore_x86_64.h"

using namespace lldb_private;

RegisterContextCorePOSIX_x86_64::RegisterContextCorePOSIX_x86_64(Thread &thread,
                                                                 RegisterInfoInterface *register_info,
                                                                 const DataExtractor &gpregset,
                                                                 const DataExtractor &fpregset)
    : RegisterContextPOSIX_x86 (thread, 0, register_info)
{
    size_t size, len;

    size = GetGPRSize();
    m_gpregset = new uint8_t[size];
    len = gpregset.ExtractBytes (0, size, lldb::eByteOrderLittle, m_gpregset);
    assert(len == size);
}

RegisterContextCorePOSIX_x86_64::~RegisterContextCorePOSIX_x86_64()
{
    delete [] m_gpregset;
}

bool
RegisterContextCorePOSIX_x86_64::ReadGPR()
{
    return m_gpregset != NULL;
}

bool
RegisterContextCorePOSIX_x86_64::ReadFPR()
{
    return false;
}

bool
RegisterContextCorePOSIX_x86_64::WriteGPR()
{
    assert(0);
    return false;
}

bool
RegisterContextCorePOSIX_x86_64::WriteFPR()
{
    assert(0);
    return false;
}

bool
RegisterContextCorePOSIX_x86_64::ReadRegister(const RegisterInfo *reg_info, RegisterValue &value)
{
    switch (reg_info->byte_size)
    {
        case 4:
            value = *(uint32_t *)(m_gpregset + reg_info->byte_offset);
            return true;
        case 8:
            value = *(uint64_t *)(m_gpregset + reg_info->byte_offset);
            return true;
    }
    return false;
}

bool
RegisterContextCorePOSIX_x86_64::ReadAllRegisterValues(lldb::DataBufferSP &data_sp)
{
    return false;
}

bool
RegisterContextCorePOSIX_x86_64::WriteRegister(const RegisterInfo *reg_info, const RegisterValue &value)
{
    return false;
}

bool
RegisterContextCorePOSIX_x86_64::WriteAllRegisterValues(const lldb::DataBufferSP &data_sp)
{
    return false;
}

bool
RegisterContextCorePOSIX_x86_64::HardwareSingleStep(bool enable)
{
    return false;
}
