src/arch/x86/insts/micromediaop.hh

   1 /*
   2  * Copyright (c) 2009 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef __ARCH_X86_INSTS_MICROMEDIAOP_HH__
  30 #define __ARCH_X86_INSTS_MICROMEDIAOP_HH__
  31
  32 #include "arch/x86/insts/microop.hh"
  33
  34 namespace X86ISA
  35 {
  36     enum MediaFlag {
  37         MediaMultHiOp = 1,
  38         MediaSignedOp = 64,
  39         MediaScalarOp = 128
  40     };
  41
  42     class MediaOpBase : public X86MicroopBase
  43     {
  44       protected:
  45         const RegIndex src1;
  46         const RegIndex dest;
  47         const uint8_t srcSize;
  48         const uint8_t destSize;
  49         const uint8_t ext;
  50         static const RegIndex foldOBit = 0;
  51
  52         // Constructor
  53         MediaOpBase(ExtMachInst _machInst,
  54                 const char *mnem, const char *_instMnem, uint64_t setFlags,
  55                 InstRegIndex _src1, InstRegIndex _dest,
  56                 uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
  57                 OpClass __opClass) :
  58             X86MicroopBase(_machInst, mnem, _instMnem, setFlags,
  59                     __opClass),
  60             src1(_src1.index()), dest(_dest.index()),
  61             srcSize(_srcSize), destSize(_destSize), ext(_ext)
  62         {}
  63
  64         bool
  65         scalarOp() const
  66         {
  67             return ext & MediaScalarOp;
  68         }
  69
  70         int
  71         numItems(int size) const
  72         {
  73             return scalarOp() ? 1 : (sizeof(uint64_t) / size);
  74         }
  75
  76         bool
  77         multHi() const
  78         {
  79             return ext & MediaMultHiOp;
  80         }
  81
  82         bool
  83         signedOp() const
  84         {
  85             return ext & MediaSignedOp;
  86         }
  87     };
  88
  89     class MediaOpReg : public MediaOpBase
  90     {
  91       protected:
  92         const RegIndex src2;
  93
  94         // Constructor
  95         MediaOpReg(ExtMachInst _machInst,
  96                 const char *mnem, const char *_instMnem, uint64_t setFlags,
  97                 InstRegIndex _src1, InstRegIndex _src2, InstRegIndex _dest,
  98                 uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
  99                 OpClass __opClass) :
 100             MediaOpBase(_machInst, mnem, _instMnem, setFlags,
 101                     _src1, _dest, _srcSize, _destSize, _ext,
 102                     __opClass),
 103             src2(_src2.index())
 104         {}
 105
 106         std::string generateDisassembly(Addr pc,
 107             const Loader::SymbolTable *symtab) const override;
 108     };
 109
 110     class MediaOpImm : public MediaOpBase
 111     {
 112       protected:
 113         uint8_t imm8;
 114
 115         // Constructor
 116         MediaOpImm(ExtMachInst _machInst,
 117                 const char *mnem, const char *_instMnem, uint64_t setFlags,
 118                 InstRegIndex _src1, uint8_t _imm8, InstRegIndex _dest,
 119                 uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
 120                 OpClass __opClass) :
 121             MediaOpBase(_machInst, mnem, _instMnem, setFlags,
 122                     _src1, _dest, _srcSize, _destSize, _ext,
 123                     __opClass),
 124             imm8(_imm8)
 125         {}
 126
 127         std::string generateDisassembly(Addr pc,
 128             const Loader::SymbolTable *symtab) const override;
 129     };
 130 }
 131
 132 #endif //__ARCH_X86_INSTS_MICROMEDIAOP_HH__