xref: /gem5/src/arch/alpha/types.hh

/*
 * Copyright (c) 2003-2005 The Regents of The University of Michigan
 * All rights reserved.
 *
 * 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,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __ARCH_ALPHA_TYPES_HH__
#define __ARCH_ALPHA_TYPES_HH__

#include "sim/host.hh"

namespace AlphaISA
{

    typedef uint32_t MachInst;
    typedef uint64_t ExtMachInst;
    typedef uint8_t  RegIndex;

    // These enumerate all the registers for dependence tracking.
    enum DependenceTags {
        // 0..31 are the integer regs 0..31
        // 32..63 are the FP regs 0..31, i.e. use (reg + FP_Base_DepTag)
        FP_Base_DepTag = 40,
        Ctrl_Base_DepTag = 72,
        Fpcr_DepTag = 72,		// floating point control register
        Uniq_DepTag = 73,
        Lock_Flag_DepTag = 74,
        Lock_Addr_DepTag = 75,
        IPR_Base_DepTag = 76
    };

    typedef uint64_t IntReg;

    // floating point register file entry type
    typedef union {
        uint64_t q;
        double d;
    } FloatReg;

    // control register file contents
    typedef uint64_t MiscReg;

    typedef union {
        IntReg  intreg;
        FloatReg   fpreg;
        MiscReg ctrlreg;
    } AnyReg;

    enum annotes {
        ANNOTE_NONE = 0,
        // An impossible number for instruction annotations
        ITOUCH_ANNOTE = 0xffffffff,
    };

} // namespace AlphaISA

#endif