micromediaop.hh revision 6799:36131e4dfb6e 
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        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,
55                bool isMicro, bool isDelayed,
56                bool isFirst, bool isLast,
57                InstRegIndex _src1, InstRegIndex _dest,
58                uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
59                OpClass __opClass) :
60            X86MicroopBase(_machInst, mnem, _instMnem,
61                    isMicro, isDelayed, isFirst, isLast,
62                    __opClass),
63            src1(_src1.idx), dest(_dest.idx),
64            srcSize(_srcSize), destSize(_destSize), ext(_ext)
65        {}
66
67        bool
68        scalarOp() const
69        {
70            return ext & MediaScalarOp;
71        }
72
73        int
74        numItems(int size) const
75        {
76            return scalarOp() ? 1 : (sizeof(FloatRegBits) / size);
77        }
78    };
79
80    class MediaOpReg : public MediaOpBase
81    {
82      protected:
83        const RegIndex src2;
84
85        // Constructor
86        MediaOpReg(ExtMachInst _machInst,
87                const char *mnem, const char *_instMnem,
88                bool isMicro, bool isDelayed,
89                bool isFirst, bool isLast,
90                InstRegIndex _src1, InstRegIndex _src2, InstRegIndex _dest,
91                uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
92                OpClass __opClass) :
93            MediaOpBase(_machInst, mnem, _instMnem,
94                    isMicro, isDelayed, isFirst, isLast,
95                    _src1, _dest, _srcSize, _destSize, _ext,
96                    __opClass),
97            src2(_src2.idx)
98        {}
99
100        std::string generateDisassembly(Addr pc,
101            const SymbolTable *symtab) const;
102    };
103
104    class MediaOpImm : public MediaOpBase
105    {
106      protected:
107        uint8_t imm8;
108
109        // Constructor
110        MediaOpImm(ExtMachInst _machInst,
111                const char *mnem, const char *_instMnem,
112                bool isMicro, bool isDelayed,
113                bool isFirst, bool isLast,
114                InstRegIndex _src1, uint8_t _imm8, InstRegIndex _dest,
115                uint8_t _srcSize, uint8_t _destSize, uint8_t _ext,
116                OpClass __opClass) :
117            MediaOpBase(_machInst, mnem, _instMnem,
118                    isMicro, isDelayed, isFirst, isLast,
119                    _src1, _dest, _srcSize, _destSize, _ext,
120                    __opClass),
121            imm8(_imm8)
122        {}
123
124        std::string generateDisassembly(Addr pc,
125            const SymbolTable *symtab) const;
126    };
127}
128
129#endif //__ARCH_X86_INSTS_MICROMEDIAOP_HH__
130