micromediaop.hh revision 6801:353726c415f4 
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        MediaSignedOp = 64,
41        MediaScalarOp = 128
42    };
43
44    class MediaOpBase : public X86MicroopBase
45    {
46      protected:
47        const RegIndex src1;
48        const RegIndex dest;
49        const uint8_t srcSize;
50        const uint8_t destSize;
51        const uint8_t ext;
52        static const RegIndex foldOBit = 0;
53
54        // Constructor
55        MediaOpBase(ExtMachInst _machInst,
56                const char *mnem, const char *_instMnem,
57                bool isMicro, bool isDelayed,
58                bool isFirst, bool isLast,
59                InstRegIndex _src1, InstRegIndex _dest,
60                uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
61                OpClass __opClass) :
62            X86MicroopBase(_machInst, mnem, _instMnem,
63                    isMicro, isDelayed, isFirst, isLast,
64                    __opClass),
65            src1(_src1.idx), dest(_dest.idx),
66            srcSize(_srcSize), destSize(_destSize), ext(_ext)
67        {}
68
69        bool
70        scalarOp() const
71        {
72            return ext & MediaScalarOp;
73        }
74
75        int
76        numItems(int size) const
77        {
78            return scalarOp() ? 1 : (sizeof(FloatRegBits) / size);
79        }
80
81        bool
82        multHi() const
83        {
84            return ext & MediaMultHiOp;
85        }
86
87        bool
88        signedOp() const
89        {
90            return ext & MediaSignedOp;
91        }
92    };
93
94    class MediaOpReg : public MediaOpBase
95    {
96      protected:
97        const RegIndex src2;
98
99        // Constructor
100        MediaOpReg(ExtMachInst _machInst,
101                const char *mnem, const char *_instMnem,
102                bool isMicro, bool isDelayed,
103                bool isFirst, bool isLast,
104                InstRegIndex _src1, InstRegIndex _src2, InstRegIndex _dest,
105                uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
106                OpClass __opClass) :
107            MediaOpBase(_machInst, mnem, _instMnem,
108                    isMicro, isDelayed, isFirst, isLast,
109                    _src1, _dest, _srcSize, _destSize, _ext,
110                    __opClass),
111            src2(_src2.idx)
112        {}
113
114        std::string generateDisassembly(Addr pc,
115            const SymbolTable *symtab) const;
116    };
117
118    class MediaOpImm : public MediaOpBase
119    {
120      protected:
121        uint8_t imm8;
122
123        // Constructor
124        MediaOpImm(ExtMachInst _machInst,
125                const char *mnem, const char *_instMnem,
126                bool isMicro, bool isDelayed,
127                bool isFirst, bool isLast,
128                InstRegIndex _src1, uint8_t _imm8, InstRegIndex _dest,
129                uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
130                OpClass __opClass) :
131            MediaOpBase(_machInst, mnem, _instMnem,
132                    isMicro, isDelayed, isFirst, isLast,
133                    _src1, _dest, _srcSize, _destSize, _ext,
134                    __opClass),
135            imm8(_imm8)
136        {}
137
138        std::string generateDisassembly(Addr pc,
139            const SymbolTable *symtab) const;
140    };
141}
142
143#endif //__ARCH_X86_INSTS_MICROMEDIAOP_HH__
144