microldstop.hh revision 5727 
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#include "mem/packet.hh"
63
64namespace X86ISA
65{
66    /**
67     * Base class for load and store ops
68     */
69    class LdStOp : public X86MicroopBase
70    {
71      protected:
72        const uint8_t scale;
73        const RegIndex index;
74        const RegIndex base;
75        const uint64_t disp;
76        const uint8_t segment;
77        const RegIndex data;
78        const uint8_t dataSize;
79        const uint8_t addressSize;
80        RegIndex foldOBit, foldABit;
81
82        //Constructor
83        LdStOp(ExtMachInst _machInst,
84                const char * mnem, const char * _instMnem,
85                bool isMicro, bool isDelayed, bool isFirst, bool isLast,
86                uint8_t _scale, RegIndex _index, RegIndex _base,
87                uint64_t _disp, uint8_t _segment,
88                RegIndex _data,
89                uint8_t _dataSize, uint8_t _addressSize,
90                OpClass __opClass) :
91        X86MicroopBase(machInst, mnem, _instMnem,
92                isMicro, isDelayed, isFirst, isLast, __opClass),
93                scale(_scale), index(_index), base(_base),
94                disp(_disp), segment(_segment),
95                data(_data),
96                dataSize(_dataSize), addressSize(_addressSize)
97        {
98            foldOBit = (dataSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0;
99            foldABit =
100                (addressSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0;
101        }
102
103        std::string generateDisassembly(Addr pc,
104            const SymbolTable *symtab) const;
105
106        template<class Context, class MemType>
107        Fault read(Context *xc, Addr EA, MemType & Mem, unsigned flags) const
108        {
109            Fault fault = NoFault;
110            switch(dataSize)
111            {
112              case 1:
113                fault = xc->read(EA, (uint8_t&)Mem, flags);
114                break;
115              case 2:
116                fault = xc->read(EA, (uint16_t&)Mem, flags);
117                break;
118              case 4:
119                fault = xc->read(EA, (uint32_t&)Mem, flags);
120                break;
121              case 8:
122                fault = xc->read(EA, (uint64_t&)Mem, flags);
123                break;
124              default:
125                panic("Bad operand size %d for read at %#x.\n", dataSize, EA);
126            }
127            return fault;
128        }
129
130        template<class Context, class MemType>
131        Fault write(Context *xc, MemType & Mem, Addr EA, unsigned flags) const
132        {
133            Fault fault = NoFault;
134            switch(dataSize)
135            {
136              case 1:
137                fault = xc->write((uint8_t&)Mem, EA, flags, 0);
138                break;
139              case 2:
140                fault = xc->write((uint16_t&)Mem, EA, flags, 0);
141                break;
142              case 4:
143                fault = xc->write((uint32_t&)Mem, EA, flags, 0);
144                break;
145              case 8:
146                fault = xc->write((uint64_t&)Mem, EA, flags, 0);
147                break;
148              default:
149                panic("Bad operand size %d for write at %#x.\n", dataSize, EA);
150            }
151            return fault;
152        }
153
154        uint64_t
155        get(PacketPtr pkt) const
156        {
157            switch(dataSize)
158            {
159              case 1:
160                return pkt->get<uint8_t>();
161              case 2:
162                return pkt->get<uint16_t>();
163              case 4:
164                return pkt->get<uint32_t>();
165              case 8:
166                return pkt->get<uint64_t>();
167              default:
168                panic("Bad operand size %d for read at %#x.\n",
169                        dataSize, pkt->getAddr());
170            }
171        }
172    };
173}
174
175#endif //__ARCH_X86_INSTS_MICROLDSTOP_HH__
176