src/arch/x86/insts/micromediaop.hh

/*
 * Copyright (c) 2009 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
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 */

#ifndef __ARCH_X86_INSTS_MICROMEDIAOP_HH__
#define __ARCH_X86_INSTS_MICROMEDIAOP_HH__

#include "arch/x86/insts/microop.hh"

namespace gem5
{

namespace X86ISA
{

enum MediaFlag
{
    MediaMultHiOp = 1,
    MediaSignedOp = 64,
    MediaScalarOp = 128
};

class MediaOpBase : public X86MicroopBase
{
  protected:
    const uint8_t srcSize;
    const uint8_t destSize;
    const uint8_t ext;

    // Constructor
    MediaOpBase(ExtMachInst mach_inst, const char *mnem, const char *inst_mnem,
            uint64_t set_flags, OpClass op_class,
            uint8_t src_size, uint8_t dest_size, uint8_t _ext) :
        X86MicroopBase(mach_inst, mnem, inst_mnem, set_flags, op_class),
        srcSize(src_size), destSize(dest_size), ext(_ext)
    {}

    bool
    scalarOp() const
    {
        return ext & MediaScalarOp;
    }

    int
    numItems(int size) const
    {
        return scalarOp() ? 1 : (sizeof(uint64_t) / size);
    }

    bool
    multHi() const
    {
        return ext & MediaMultHiOp;
    }

    bool
    signedOp() const
    {
        return ext & MediaSignedOp;
    }

  public:
    static constexpr uint8_t dataSize = 0;
};

} // namespace X86ISA
} // namespace gem5

#endif //__ARCH_X86_INSTS_MICROMEDIAOP_HH__