microregop.hh revision 7087:fb8d5786ff30 
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder.  You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution;
21 * neither the name of the copyright holders nor the names of its
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 * Authors: Gabe Black
38 */
39
40#ifndef __ARCH_X86_INSTS_MICROREGOP_HH__
41#define __ARCH_X86_INSTS_MICROREGOP_HH__
42
43#include "arch/x86/insts/microop.hh"
44
45namespace X86ISA
46{
47    /**
48     * Base classes for RegOps which provides a generateDisassembly method.
49     */
50    class RegOpBase : public X86MicroopBase
51    {
52      protected:
53        const RegIndex src1;
54        const RegIndex dest;
55        const uint8_t dataSize;
56        const uint16_t ext;
57        RegIndex foldOBit;
58
59        // Constructor
60        RegOpBase(ExtMachInst _machInst,
61                const char *mnem, const char *_instMnem,
62                bool isMicro, bool isDelayed,
63                bool isFirst, bool isLast,
64                InstRegIndex _src1, InstRegIndex _dest,
65                uint8_t _dataSize, uint16_t _ext,
66                OpClass __opClass) :
67            X86MicroopBase(_machInst, mnem, _instMnem,
68                    isMicro, isDelayed, isFirst, isLast,
69                    __opClass),
70            src1(_src1.idx), dest(_dest.idx),
71            dataSize(_dataSize), ext(_ext)
72        {
73            foldOBit = (dataSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0;
74        }
75
76        //Figure out what the condition code flags should be.
77        uint64_t genFlags(uint64_t oldFlags, uint64_t flagMask,
78                uint64_t _dest, uint64_t _src1, uint64_t _src2,
79                bool subtract = false) const;
80    };
81
82    class RegOp : public RegOpBase
83    {
84      protected:
85        const RegIndex src2;
86
87        // Constructor
88        RegOp(ExtMachInst _machInst,
89                const char *mnem, const char *_instMnem,
90                bool isMicro, bool isDelayed,
91                bool isFirst, bool isLast,
92                InstRegIndex _src1, InstRegIndex _src2, InstRegIndex _dest,
93                uint8_t _dataSize, uint16_t _ext,
94                OpClass __opClass) :
95            RegOpBase(_machInst, mnem, _instMnem,
96                    isMicro, isDelayed, isFirst, isLast,
97                    _src1, _dest, _dataSize, _ext,
98                    __opClass),
99            src2(_src2.idx)
100        {
101        }
102
103        std::string generateDisassembly(Addr pc,
104            const SymbolTable *symtab) const;
105    };
106
107    class RegOpImm : public RegOpBase
108    {
109      protected:
110        const uint8_t imm8;
111
112        // Constructor
113        RegOpImm(ExtMachInst _machInst,
114                const char * mnem, const char *_instMnem,
115                bool isMicro, bool isDelayed,
116                bool isFirst, bool isLast,
117                InstRegIndex _src1, uint8_t _imm8, InstRegIndex _dest,
118                uint8_t _dataSize, uint16_t _ext,
119                OpClass __opClass) :
120            RegOpBase(_machInst, mnem, _instMnem,
121                    isMicro, isDelayed, isFirst, isLast,
122                    _src1, _dest, _dataSize, _ext,
123                    __opClass),
124            imm8(_imm8)
125        {
126        }
127
128        std::string generateDisassembly(Addr pc,
129            const SymbolTable *symtab) const;
130    };
131}
132
133#endif //__ARCH_X86_INSTS_MICROREGOP_HH__
134