store_set.hh revision 2665 
1/*
2 * Copyright (c) 2004-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Kevin Lim
29 */
30
31#ifndef __CPU_O3_CPU_STORE_SET_HH__
32#define __CPU_O3_CPU_STORE_SET_HH__
33
34#include <vector>
35
36#include "arch/isa_traits.hh"
37#include "cpu/inst_seq.hh"
38
39class StoreSet
40{
41  public:
42    typedef unsigned SSID;
43
44  public:
45    StoreSet(int SSIT_size, int LFST_size);
46
47    void violation(Addr store_PC, Addr load_PC);
48
49    void insertLoad(Addr load_PC, InstSeqNum load_seq_num);
50
51    void insertStore(Addr store_PC, InstSeqNum store_seq_num);
52
53    InstSeqNum checkInst(Addr PC);
54
55    void issued(Addr issued_PC, InstSeqNum issued_seq_num, bool is_store);
56
57    void squash(InstSeqNum squashed_num);
58
59    void clear();
60
61  private:
62    inline int calcIndex(Addr PC)
63    { return (PC >> offset_bits) & index_mask; }
64
65    inline SSID calcSSID(Addr PC)
66    { return ((PC ^ (PC >> 10)) % LFST_size); }
67
68    SSID *SSIT;
69
70    std::vector<bool> validSSIT;
71
72    InstSeqNum *LFST;
73
74    std::vector<bool> validLFST;
75
76    int *SSCounters;
77
78    int SSIT_size;
79
80    int LFST_size;
81
82    int index_mask;
83
84    // HACK: Hardcoded for now.
85    int offset_bits;
86};
87
88#endif // __CPU_O3_CPU_STORE_SET_HH__
89