microldstop.hh revision 10467:dcf27c8220ac 
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 "arch/x86/ldstflags.hh"
45#include "mem/packet.hh"
46#include "mem/request.hh"
47#include "sim/faults.hh"
48
49namespace X86ISA
50{
51    /**
52     * Base class for load and store ops
53     */
54    class LdStOp : public X86MicroopBase
55    {
56      protected:
57        const uint8_t scale;
58        const RegIndex index;
59        const RegIndex base;
60        const uint64_t disp;
61        const uint8_t segment;
62        const RegIndex data;
63        const uint8_t dataSize;
64        const uint8_t addressSize;
65        const Request::FlagsType memFlags;
66        RegIndex foldOBit, foldABit;
67
68        //Constructor
69        LdStOp(ExtMachInst _machInst,
70                const char * mnem, const char * _instMnem,
71                uint64_t setFlags,
72                uint8_t _scale, InstRegIndex _index, InstRegIndex _base,
73                uint64_t _disp, InstRegIndex _segment,
74                InstRegIndex _data,
75                uint8_t _dataSize, uint8_t _addressSize,
76                Request::FlagsType _memFlags,
77                OpClass __opClass) :
78        X86MicroopBase(_machInst, mnem, _instMnem, setFlags, __opClass),
79                scale(_scale), index(_index.idx), base(_base.idx),
80                disp(_disp), segment(_segment.idx),
81                data(_data.idx),
82                dataSize(_dataSize), addressSize(_addressSize),
83                memFlags(_memFlags | _segment.idx)
84        {
85            assert(_segment.idx < NUM_SEGMENTREGS);
86            foldOBit = (dataSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0;
87            foldABit =
88                (addressSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0;
89        }
90
91        std::string generateDisassembly(Addr pc,
92            const SymbolTable *symtab) const;
93    };
94}
95
96#endif //__ARCH_X86_INSTS_MICROLDSTOP_HH__
97