utils.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef KERNEL_PROCESSOR_X64_UTILS_H
#define KERNEL_PROCESSOR_X64_UTILS_H

#include "pedigree/kernel/compiler.h"
#include "pedigree/kernel/processor/types.h"

inline uintptr_t physicalAddress(physical_uintptr_t address) PURE;

template <typename T>
inline T *physicalAddress(T *pAddress) PURE;

inline uintptr_t physicalAddress(physical_uintptr_t address)
{
    // Implicit cast due to return data type - no need to specify the cast.
    return address + 0xFFFF800000000000ULL;
}

template <typename T>
inline T *physicalAddress(T *pAddress)
{
    return reinterpret_cast<T *>(
        reinterpret_cast<uint64_t>(pAddress) + 0xFFFF800000000000);
}

#endif