summaryrefslogtreecommitdiff
path: root/src/arch/x86/insts/micromediaop.hh
blob: cedd1682091cf79c36a2658eb773caba6e7c340d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
/*
 * 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
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Authors: Gabe Black
 */

#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.idx), dest(_dest.idx),
            srcSize(_srcSize), destSize(_destSize), ext(_ext)
        {}

        bool
        scalarOp() const
        {
            return ext & MediaScalarOp;
        }
        
        int
        numItems(int size) const
        {
            return scalarOp() ? 1 : (sizeof(FloatRegBits) / 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.idx)
        {}

        std::string generateDisassembly(Addr pc,
            const SymbolTable *symtab) const;
    };

    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 SymbolTable *symtab) const;
    };
}

#endif //__ARCH_X86_INSTS_MICROMEDIAOP_HH__