microregop.hh revision 6345 
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
5 * Redistribution and use of this software in source and binary forms,
6 * with or without modification, are permitted provided that the
7 * following conditions are met:
8 *
9 * The software must be used only for Non-Commercial Use which means any
10 * use which is NOT directed to receiving any direct monetary
11 * compensation for, or commercial advantage from such use.  Illustrative
12 * examples of non-commercial use are academic research, personal study,
13 * teaching, education and corporate research & development.
14 * Illustrative examples of commercial use are distributing products for
15 * commercial advantage and providing services using the software for
16 * commercial advantage.
17 *
18 * If you wish to use this software or functionality therein that may be
19 * covered by patents for commercial use, please contact:
20 *     Director of Intellectual Property Licensing
21 *     Office of Strategy and Technology
22 *     Hewlett-Packard Company
23 *     1501 Page Mill Road
24 *     Palo Alto, California  94304
25 *
26 * Redistributions of source code must retain the above copyright notice,
27 * this list of conditions and the following disclaimer.  Redistributions
28 * in binary form must reproduce the above copyright notice, this list of
29 * conditions and the following disclaimer in the documentation and/or
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31 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
32 * contributors may be used to endorse or promote products derived from
33 * this software without specific prior written permission.  No right of
34 * sublicense is granted herewith.  Derivatives of the software and
35 * output created using the software may be prepared, but only for
36 * Non-Commercial Uses.  Derivatives of the software may be shared with
37 * others provided: (i) the others agree to abide by the list of
38 * conditions herein which includes the Non-Commercial Use restrictions;
39 * and (ii) such Derivatives of the software include the above copyright
40 * notice to acknowledge the contribution from this software where
41 * applicable, this list of conditions and the disclaimer below.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 *
55 * Authors: Gabe Black
56 */
57
58#ifndef __ARCH_X86_INSTS_MICROREGOP_HH__
59#define __ARCH_X86_INSTS_MICROREGOP_HH__
60
61#include "arch/x86/insts/microop.hh"
62
63namespace X86ISA
64{
65    /**
66     * Base classes for RegOps which provides a generateDisassembly method.
67     */
68    class RegOpBase : public X86MicroopBase
69    {
70      protected:
71        const RegIndex src1;
72        const RegIndex dest;
73        const uint8_t dataSize;
74        const uint16_t ext;
75        RegIndex foldOBit;
76
77        // Constructor
78        RegOpBase(ExtMachInst _machInst,
79                const char *mnem, const char *_instMnem,
80                bool isMicro, bool isDelayed,
81                bool isFirst, bool isLast,
82                InstRegIndex _src1, InstRegIndex _dest,
83                uint8_t _dataSize, uint16_t _ext,
84                OpClass __opClass) :
85            X86MicroopBase(_machInst, mnem, _instMnem,
86                    isMicro, isDelayed, isFirst, isLast,
87                    __opClass),
88            src1(_src1.idx), dest(_dest.idx),
89            dataSize(_dataSize), ext(_ext)
90        {
91            foldOBit = (dataSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0;
92        }
93
94        //Figure out what the condition code flags should be.
95        uint64_t genFlags(uint64_t oldFlags, uint64_t flagMask,
96                uint64_t _dest, uint64_t _src1, uint64_t _src2,
97                bool subtract = false) const;
98    };
99
100    class RegOp : public RegOpBase
101    {
102      protected:
103        const RegIndex src2;
104
105        // Constructor
106        RegOp(ExtMachInst _machInst,
107                const char *mnem, const char *_instMnem,
108                bool isMicro, bool isDelayed,
109                bool isFirst, bool isLast,
110                InstRegIndex _src1, InstRegIndex _src2, InstRegIndex _dest,
111                uint8_t _dataSize, uint16_t _ext,
112                OpClass __opClass) :
113            RegOpBase(_machInst, mnem, _instMnem,
114                    isMicro, isDelayed, isFirst, isLast,
115                    _src1, _dest, _dataSize, _ext,
116                    __opClass),
117            src2(_src2.idx)
118        {
119        }
120
121        std::string generateDisassembly(Addr pc,
122            const SymbolTable *symtab) const;
123    };
124
125    class RegOpImm : public RegOpBase
126    {
127      protected:
128        const uint8_t imm8;
129
130        // Constructor
131        RegOpImm(ExtMachInst _machInst,
132                const char * mnem, const char *_instMnem,
133                bool isMicro, bool isDelayed,
134                bool isFirst, bool isLast,
135                InstRegIndex _src1, uint8_t _imm8, InstRegIndex _dest,
136                uint8_t _dataSize, uint16_t _ext,
137                OpClass __opClass) :
138            RegOpBase(_machInst, mnem, _instMnem,
139                    isMicro, isDelayed, isFirst, isLast,
140                    _src1, _dest, _dataSize, _ext,
141                    __opClass),
142            imm8(_imm8)
143        {
144        }
145
146        std::string generateDisassembly(Addr pc,
147            const SymbolTable *symtab) const;
148    };
149}
150
151#endif //__ARCH_X86_INSTS_MICROREGOP_HH__
152