micromediaop.hh revision 12106:7784fac1b159 
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, uint64_t setFlags,
57                InstRegIndex _src1, InstRegIndex _dest,
58                uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
59                OpClass __opClass) :
60            X86MicroopBase(_machInst, mnem, _instMnem, setFlags,
61                    __opClass),
62            src1(_src1.index()), dest(_dest.index()),
63            srcSize(_srcSize), destSize(_destSize), ext(_ext)
64        {}
65
66        bool
67        scalarOp() const
68        {
69            return ext & MediaScalarOp;
70        }
71
72        int
73        numItems(int size) const
74        {
75            return scalarOp() ? 1 : (sizeof(FloatRegBits) / size);
76        }
77
78        bool
79        multHi() const
80        {
81            return ext & MediaMultHiOp;
82        }
83
84        bool
85        signedOp() const
86        {
87            return ext & MediaSignedOp;
88        }
89    };
90
91    class MediaOpReg : public MediaOpBase
92    {
93      protected:
94        const RegIndex src2;
95
96        // Constructor
97        MediaOpReg(ExtMachInst _machInst,
98                const char *mnem, const char *_instMnem, uint64_t setFlags,
99                InstRegIndex _src1, InstRegIndex _src2, InstRegIndex _dest,
100                uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
101                OpClass __opClass) :
102            MediaOpBase(_machInst, mnem, _instMnem, setFlags,
103                    _src1, _dest, _srcSize, _destSize, _ext,
104                    __opClass),
105            src2(_src2.index())
106        {}
107
108        std::string generateDisassembly(Addr pc,
109            const SymbolTable *symtab) const;
110    };
111
112    class MediaOpImm : public MediaOpBase
113    {
114      protected:
115        uint8_t imm8;
116
117        // Constructor
118        MediaOpImm(ExtMachInst _machInst,
119                const char *mnem, const char *_instMnem, uint64_t setFlags,
120                InstRegIndex _src1, uint8_t _imm8, InstRegIndex _dest,
121                uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
122                OpClass __opClass) :
123            MediaOpBase(_machInst, mnem, _instMnem, setFlags,
124                    _src1, _dest, _srcSize, _destSize, _ext,
125                    __opClass),
126            imm8(_imm8)
127        {}
128
129        std::string generateDisassembly(Addr pc,
130            const SymbolTable *symtab) const;
131    };
132}
133
134#endif //__ARCH_X86_INSTS_MICROMEDIAOP_HH__
135