//===-- RegisterContextCorePOSIX_s390x.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 "RegisterContextPOSIXCore_s390x.h"

using namespace lldb_private;

RegisterContextCorePOSIX_s390x::RegisterContextCorePOSIX_s390x(Thread &thread, RegisterInfoInterface *register_info,
                                                               const DataExtractor &gpregset,
                                                               const DataExtractor &fpregset)
    : RegisterContextPOSIX_s390x(thread, 0, register_info)
{
    m_gpr_buffer.reset(new DataBufferHeap(gpregset.GetDataStart(), gpregset.GetByteSize()));
    m_gpr.SetData(m_gpr_buffer);
    m_gpr.SetByteOrder(gpregset.GetByteOrder());

    m_fpr_buffer.reset(new DataBufferHeap(fpregset.GetDataStart(), fpregset.GetByteSize()));
    m_fpr.SetData(m_fpr_buffer);
    m_fpr.SetByteOrder(fpregset.GetByteOrder());
}

RegisterContextCorePOSIX_s390x::~RegisterContextCorePOSIX_s390x()
{
}

bool
RegisterContextCorePOSIX_s390x::ReadGPR()
{
    return true;
}

bool
RegisterContextCorePOSIX_s390x::ReadFPR()
{
    return true;
}

bool
RegisterContextCorePOSIX_s390x::WriteGPR()
{
    assert(0);
    return false;
}

bool
RegisterContextCorePOSIX_s390x::WriteFPR()
{
    assert(0);
    return false;
}

bool
RegisterContextCorePOSIX_s390x::ReadRegister(const RegisterInfo *reg_info, RegisterValue &value)
{
    const uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB];
    if (reg == LLDB_INVALID_REGNUM)
        return false;

    if (IsGPR(reg))
    {
        lldb::offset_t offset = reg_info->byte_offset;
        uint64_t v = m_gpr.GetMaxU64(&offset, reg_info->byte_size);
        if (offset == reg_info->byte_offset + reg_info->byte_size)
        {
            value.SetUInt(v, reg_info->byte_size);
            return true;
        }
    }

    if (IsFPR(reg))
    {
        lldb::offset_t offset = reg_info->byte_offset;
        uint64_t v = m_fpr.GetMaxU64(&offset, reg_info->byte_size);
        if (offset == reg_info->byte_offset + reg_info->byte_size)
        {
            value.SetUInt(v, reg_info->byte_size);
            return true;
        }
    }

    return false;
}

bool
RegisterContextCorePOSIX_s390x::ReadAllRegisterValues(lldb::DataBufferSP &data_sp)
{
    return false;
}

bool
RegisterContextCorePOSIX_s390x::WriteRegister(const RegisterInfo *reg_info, const RegisterValue &value)
{
    return false;
}

bool
RegisterContextCorePOSIX_s390x::WriteAllRegisterValues(const lldb::DataBufferSP &data_sp)
{
    return false;
}

bool
RegisterContextCorePOSIX_s390x::HardwareSingleStep(bool enable)
{
    return false;
}
