micromediaop.hh

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/*
 * 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
 * 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_X86_INSTS_MICROMEDIAOP_HH__
#define __ARCH_X86_INSTS_MICROMEDIAOP_HH__
 
#include "arch/x86/insts/microop.hh"
 
namespace X86ISA
{
 
enum MediaFlag
{
    MediaMultHiOp = 1,
    MediaSignedOp = 64,
    MediaScalarOp = 128
};
 
class MediaOpBase : public X86MicroopBase
{
  protected:
    const RegIndex src1;
    const RegIndex dest;
    const uint8_t srcSize;
    const uint8_t destSize;
    const uint8_t ext;
    static const RegIndex foldOBit = 0;
 
    // Constructor
    MediaOpBase(ExtMachInst _machInst,
            const char *mnem, const char *_instMnem, uint64_t setFlags,
            InstRegIndex _src1, InstRegIndex _dest,
            uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
            OpClass __opClass) :
        X86MicroopBase(_machInst, mnem, _instMnem, setFlags,
                __opClass),
        src1(_src1.index()), dest(_dest.index()),
        srcSize(_srcSize), destSize(_destSize), 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;
    }
};
 
class MediaOpReg : public MediaOpBase
{
  protected:
    const RegIndex src2;
 
    // Constructor
    MediaOpReg(ExtMachInst _machInst,
            const char *mnem, const char *_instMnem, uint64_t setFlags,
            InstRegIndex _src1, InstRegIndex _src2, InstRegIndex _dest,
            uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
            OpClass __opClass) :
        MediaOpBase(_machInst, mnem, _instMnem, setFlags,
                _src1, _dest, _srcSize, _destSize, _ext,
                __opClass),
        src2(_src2.index())
    {}
 
    std::string generateDisassembly(Addr pc,
        const Loader::SymbolTable *symtab) const override;
};
 
class MediaOpImm : public MediaOpBase
{
  protected:
    uint8_t imm8;
 
    // Constructor
    MediaOpImm(ExtMachInst _machInst,
            const char *mnem, const char *_instMnem, uint64_t setFlags,
            InstRegIndex _src1, uint8_t _imm8, InstRegIndex _dest,
            uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
            OpClass __opClass) :
        MediaOpBase(_machInst, mnem, _instMnem, setFlags,
                _src1, _dest, _srcSize, _destSize, _ext,
                __opClass),
        imm8(_imm8)
    {}
 
    std::string generateDisassembly(Addr pc,
        const Loader::SymbolTable *symtab) const override;
};
 
}
 
#endif //__ARCH_X86_INSTS_MICROMEDIAOP_HH__