microldstop.hh revision 5002:1b540e93ad34 
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
30 * other materials provided with the distribution.  Neither the name of
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_MICROLDSTOP_HH__
59#define __ARCH_X86_INSTS_MICROLDSTOP_HH__
60
61#include "arch/x86/insts/microop.hh"
62
63namespace X86ISA
64{
65    /**
66     * Base class for load and store ops
67     */
68    class LdStOp : public X86MicroopBase
69    {
70      protected:
71        const uint8_t scale;
72        const RegIndex index;
73        const RegIndex base;
74        const uint64_t disp;
75        const uint8_t segment;
76        const RegIndex data;
77        const uint8_t dataSize;
78        const uint8_t addressSize;
79        RegIndex foldOBit, foldABit;
80
81        //Constructor
82        LdStOp(ExtMachInst _machInst,
83                const char * mnem, const char * _instMnem,
84                bool isMicro, bool isDelayed, bool isFirst, bool isLast,
85                uint8_t _scale, RegIndex _index, RegIndex _base,
86                uint64_t _disp, uint8_t _segment,
87                RegIndex _data,
88                uint8_t _dataSize, uint8_t _addressSize,
89                OpClass __opClass) :
90        X86MicroopBase(machInst, mnem, _instMnem,
91                isMicro, isDelayed, isFirst, isLast, __opClass),
92                scale(_scale), index(_index), base(_base),
93                disp(_disp), segment(_segment),
94                data(_data),
95                dataSize(_dataSize), addressSize(_addressSize)
96        {
97            foldOBit = (dataSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0;
98            foldABit =
99                (addressSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0;
100        }
101
102        std::string generateDisassembly(Addr pc,
103            const SymbolTable *symtab) const;
104
105        template<class Context, class MemType>
106        Fault read(Context *xc, Addr EA, MemType & Mem, unsigned flags) const
107        {
108            Fault fault = NoFault;
109            switch(dataSize)
110            {
111              case 1:
112                fault = xc->read(EA, (uint8_t&)Mem, flags);
113                break;
114              case 2:
115                fault = xc->read(EA, (uint16_t&)Mem, flags);
116                break;
117              case 4:
118                fault = xc->read(EA, (uint32_t&)Mem, flags);
119                break;
120              case 8:
121                fault = xc->read(EA, (uint64_t&)Mem, flags);
122                break;
123              default:
124                panic("Bad operand size %d for read at %#x.\n", dataSize, EA);
125            }
126            return fault;
127        }
128
129        template<class Context, class MemType>
130        Fault write(Context *xc, MemType & Mem, Addr EA, unsigned flags) const
131        {
132            Fault fault = NoFault;
133            switch(dataSize)
134            {
135              case 1:
136                fault = xc->write((uint8_t&)Mem, EA, flags, 0);
137                break;
138              case 2:
139                fault = xc->write((uint16_t&)Mem, EA, flags, 0);
140                break;
141              case 4:
142                fault = xc->write((uint32_t&)Mem, EA, flags, 0);
143                break;
144              case 8:
145                fault = xc->write((uint64_t&)Mem, EA, flags, 0);
146                break;
147              default:
148                panic("Bad operand size %d for write at %#x.\n", dataSize, EA);
149            }
150            return fault;
151        }
152    };
153}
154
155#endif //__ARCH_X86_INSTS_MICROLDSTOP_HH__
156