micromediaop.hh revision 6800:335f8b406bb9 
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 * Authors: Gabe Black
29 */
30
31#ifndef __ARCH_X86_INSTS_MICROMEDIAOP_HH__
32#define __ARCH_X86_INSTS_MICROMEDIAOP_HH__
33
34#include "arch/x86/insts/microop.hh"
35
36namespace X86ISA
37{
38    enum MediaFlag {
39        MediaMultHiOp = 1,
40        MediaScalarOp = 128
41    };
42
43    class MediaOpBase : public X86MicroopBase
44    {
45      protected:
46        const RegIndex src1;
47        const RegIndex dest;
48        const uint8_t srcSize;
49        const uint8_t destSize;
50        const uint8_t ext;
51        static const RegIndex foldOBit = 0;
52
53        // Constructor
54        MediaOpBase(ExtMachInst _machInst,
55                const char *mnem, const char *_instMnem,
56                bool isMicro, bool isDelayed,
57                bool isFirst, bool isLast,
58                InstRegIndex _src1, InstRegIndex _dest,
59                uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
60                OpClass __opClass) :
61            X86MicroopBase(_machInst, mnem, _instMnem,
62                    isMicro, isDelayed, isFirst, isLast,
63                    __opClass),
64            src1(_src1.idx), dest(_dest.idx),
65            srcSize(_srcSize), destSize(_destSize), ext(_ext)
66        {}
67
68        bool
69        scalarOp() const
70        {
71            return ext & MediaScalarOp;
72        }
73
74        int
75        numItems(int size) const
76        {
77            return scalarOp() ? 1 : (sizeof(FloatRegBits) / size);
78        }
79
80        bool
81        multHi() const
82        {
83            return ext & MediaMultHiOp;
84        }
85    };
86
87    class MediaOpReg : public MediaOpBase
88    {
89      protected:
90        const RegIndex src2;
91
92        // Constructor
93        MediaOpReg(ExtMachInst _machInst,
94                const char *mnem, const char *_instMnem,
95                bool isMicro, bool isDelayed,
96                bool isFirst, bool isLast,
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,
101                    isMicro, isDelayed, isFirst, isLast,
102                    _src1, _dest, _srcSize, _destSize, _ext,
103                    __opClass),
104            src2(_src2.idx)
105        {}
106
107        std::string generateDisassembly(Addr pc,
108            const SymbolTable *symtab) const;
109    };
110
111    class MediaOpImm : public MediaOpBase
112    {
113      protected:
114        uint8_t imm8;
115
116        // Constructor
117        MediaOpImm(ExtMachInst _machInst,
118                const char *mnem, const char *_instMnem,
119                bool isMicro, bool isDelayed,
120                bool isFirst, bool isLast,
121                InstRegIndex _src1, uint8_t _imm8, InstRegIndex _dest,
122                uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
123                OpClass __opClass) :
124            MediaOpBase(_machInst, mnem, _instMnem,
125                    isMicro, isDelayed, isFirst, isLast,
126                    _src1, _dest, _srcSize, _destSize, _ext,
127                    __opClass),
128            imm8(_imm8)
129        {}
130
131        std::string generateDisassembly(Addr pc,
132            const SymbolTable *symtab) const;
133    };
134}
135
136#endif //__ARCH_X86_INSTS_MICROMEDIAOP_HH__
137