summaryrefslogtreecommitdiff
path: root/src/arch/x86/insts/microldstop.hh
blob: f0051e2cf61b78ec116c3056dd62c9e020d85b04 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
/*
 * Copyright (c) 2007 The Hewlett-Packard Development Company
 * All rights reserved.
 *
 * Redistribution and use of this software in source and binary forms,
 * with or without modification, are permitted provided that the
 * following conditions are met:
 *
 * The software must be used only for Non-Commercial Use which means any
 * use which is NOT directed to receiving any direct monetary
 * compensation for, or commercial advantage from such use.  Illustrative
 * examples of non-commercial use are academic research, personal study,
 * teaching, education and corporate research & development.
 * Illustrative examples of commercial use are distributing products for
 * commercial advantage and providing services using the software for
 * commercial advantage.
 *
 * If you wish to use this software or functionality therein that may be
 * covered by patents for commercial use, please contact:
 *     Director of Intellectual Property Licensing
 *     Office of Strategy and Technology
 *     Hewlett-Packard Company
 *     1501 Page Mill Road
 *     Palo Alto, California  94304
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.  Redistributions
 * in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.  Neither the name of
 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.  No right of
 * sublicense is granted herewith.  Derivatives of the software and
 * output created using the software may be prepared, but only for
 * Non-Commercial Uses.  Derivatives of the software may be shared with
 * others provided: (i) the others agree to abide by the list of
 * conditions herein which includes the Non-Commercial Use restrictions;
 * and (ii) such Derivatives of the software include the above copyright
 * notice to acknowledge the contribution from this software where
 * applicable, this list of conditions and the disclaimer below.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Authors: Gabe Black
 */

#ifndef __ARCH_X86_INSTS_MICROLDSTOP_HH__
#define __ARCH_X86_INSTS_MICROLDSTOP_HH__

#include "arch/x86/insts/microop.hh"
#include "mem/packet.hh"
#include "mem/request.hh"

namespace X86ISA
{
    static const Request::FlagsType SegmentFlagMask = mask(4);
    static const int FlagShift = 4;
    enum FlagBit {
        CPL0FlagBit = 1
    };

    /**
     * Base class for load and store ops
     */
    class LdStOp : public X86MicroopBase
    {
      protected:
        const uint8_t scale;
        const RegIndex index;
        const RegIndex base;
        const uint64_t disp;
        const uint8_t segment;
        const RegIndex data;
        const uint8_t dataSize;
        const uint8_t addressSize;
        const Request::FlagsType memFlags;
        RegIndex foldOBit, foldABit;

        //Constructor
        LdStOp(ExtMachInst _machInst,
                const char * mnem, const char * _instMnem,
                bool isMicro, bool isDelayed, bool isFirst, bool isLast,
                uint8_t _scale, RegIndex _index, RegIndex _base,
                uint64_t _disp, uint8_t _segment,
                RegIndex _data,
                uint8_t _dataSize, uint8_t _addressSize,
                Request::FlagsType _memFlags,
                OpClass __opClass) :
        X86MicroopBase(machInst, mnem, _instMnem,
                isMicro, isDelayed, isFirst, isLast, __opClass),
                scale(_scale), index(_index), base(_base),
                disp(_disp), segment(_segment),
                data(_data),
                dataSize(_dataSize), addressSize(_addressSize),
                memFlags(_memFlags | _segment)
        {
            foldOBit = (dataSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0;
            foldABit =
                (addressSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0;
        }

        std::string generateDisassembly(Addr pc,
            const SymbolTable *symtab) const;

        template<class Context, class MemType>
        Fault read(Context *xc, Addr EA, MemType & Mem, unsigned flags) const
        {
            Fault fault = NoFault;
            switch(dataSize)
            {
              case 1:
                fault = xc->read(EA, (uint8_t&)Mem, flags);
                break;
              case 2:
                fault = xc->read(EA, (uint16_t&)Mem, flags);
                break;
              case 4:
                fault = xc->read(EA, (uint32_t&)Mem, flags);
                break;
              case 8:
                fault = xc->read(EA, (uint64_t&)Mem, flags);
                break;
              default:
                panic("Bad operand size %d for read at %#x.\n", dataSize, EA);
            }
            return fault;
        }

        template<class Context, class MemType>
        Fault write(Context *xc, MemType & Mem, Addr EA, unsigned flags) const
        {
            Fault fault = NoFault;
            switch(dataSize)
            {
              case 1:
                fault = xc->write((uint8_t&)Mem, EA, flags, 0);
                break;
              case 2:
                fault = xc->write((uint16_t&)Mem, EA, flags, 0);
                break;
              case 4:
                fault = xc->write((uint32_t&)Mem, EA, flags, 0);
                break;
              case 8:
                fault = xc->write((uint64_t&)Mem, EA, flags, 0);
                break;
              default:
                panic("Bad operand size %d for write at %#x.\n", dataSize, EA);
            }
            return fault;
        }

        uint64_t
        get(PacketPtr pkt) const
        {
            switch(dataSize)
            {
              case 1:
                return pkt->get<uint8_t>();
              case 2:
                return pkt->get<uint16_t>();
              case 4:
                return pkt->get<uint32_t>();
              case 8:
                return pkt->get<uint64_t>();
              default:
                panic("Bad operand size %d for read at %#x.\n",
                        dataSize, pkt->getAddr());
            }
        }
    };
}

#endif //__ARCH_X86_INSTS_MICROLDSTOP_HH__