microldstop.hh revision 8442:b1f3dfae06f1 
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_MICROLDSTOP_HH__
41#define __ARCH_X86_INSTS_MICROLDSTOP_HH__
42
43#include "arch/x86/insts/microop.hh"
44#include "mem/packet.hh"
45#include "mem/request.hh"
46#include "sim/faults.hh"
47
48namespace X86ISA
49{
50    const Request::FlagsType SegmentFlagMask = mask(4);
51    const int FlagShift = 4;
52    enum FlagBit {
53        CPL0FlagBit = 1,
54        AddrSizeFlagBit = 2,
55        StoreCheck = 4
56    };
57
58    /**
59     * Base class for load and store ops
60     */
61    class LdStOp : public X86MicroopBase
62    {
63      protected:
64        const uint8_t scale;
65        const RegIndex index;
66        const RegIndex base;
67        const uint64_t disp;
68        const uint8_t segment;
69        const RegIndex data;
70        const uint8_t dataSize;
71        const uint8_t addressSize;
72        const Request::FlagsType memFlags;
73        RegIndex foldOBit, foldABit;
74
75        //Constructor
76        LdStOp(ExtMachInst _machInst,
77                const char * mnem, const char * _instMnem,
78                uint64_t setFlags,
79                uint8_t _scale, InstRegIndex _index, InstRegIndex _base,
80                uint64_t _disp, InstRegIndex _segment,
81                InstRegIndex _data,
82                uint8_t _dataSize, uint8_t _addressSize,
83                Request::FlagsType _memFlags,
84                OpClass __opClass) :
85        X86MicroopBase(machInst, mnem, _instMnem, setFlags, __opClass),
86                scale(_scale), index(_index.idx), base(_base.idx),
87                disp(_disp), segment(_segment.idx),
88                data(_data.idx),
89                dataSize(_dataSize), addressSize(_addressSize),
90                memFlags(_memFlags | _segment.idx)
91        {
92            assert(_segment.idx < NUM_SEGMENTREGS);
93            foldOBit = (dataSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0;
94            foldABit =
95                (addressSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0;
96        }
97
98        std::string generateDisassembly(Addr pc,
99            const SymbolTable *symtab) const;
100    };
101}
102
103#endif //__ARCH_X86_INSTS_MICROLDSTOP_HH__
104