xref: /gem5/src/arch/x86/regs/segment.hh

/*
 * Copyright (c) 2007 The Hewlett-Packard Development Company
 * All rights reserved.
 *
 * The license below extends only to copyright in the software and shall
 * not be construed as granting a license to any other intellectual
 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
 * terms below provided that you ensure that this notice is replicated
 * unmodified and in its entirety in all distributions of the software,
 * modified or unmodified, in source code or in binary form.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * Authors: Gabe Black
 */

#ifndef __ARCH_X86_SEGMENTREGS_HH__
#define __ARCH_X86_SEGMENTREGS_HH__

namespace X86ISA
{
    enum SegmentRegIndex
    {
        SEGMENT_REG_ES,
        SEGMENT_REG_CS,
        SEGMENT_REG_SS,
        SEGMENT_REG_DS,
        SEGMENT_REG_FS,
        SEGMENT_REG_GS,
        SEGMENT_REG_HS, // Temporary descriptor
        SEGMENT_REG_TSL, // Local descriptor table
        SEGMENT_REG_TSG, // Global descriptor table
        SEGMENT_REG_LS, // Flat segment
        SEGMENT_REG_MS, // Emulation memory
        // These shouldn't be used directly in a load or store since they
        // are likely accessed in other ways in a real machine. For instance,
        // they may be loaded into the temporary segment register on demand.
        SYS_SEGMENT_REG_TR,
        SYS_SEGMENT_REG_IDTR,

        NUM_SEGMENTREGS
    };
};

#endif // __ARCH_X86_SEGMENTREGS_HH__