static_inst.cc revision 2 
1/*
2 * Copyright (c) 2003 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
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26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <iostream>
30#include "static_inst.hh"
31#include "universe.hh"
32
33template <class ISA>
34StaticInstPtr<ISA> StaticInst<ISA>::nullStaticInstPtr;
35
36template <class ISA>
37typename StaticInst<ISA>::DecodeCache StaticInst<ISA>::decodeCache;
38
39// Define the decode cache hash map.
40template StaticInst<AlphaISA>::DecodeCache
41StaticInst<AlphaISA>::decodeCache;
42
43template <class ISA>
44void
45StaticInst<ISA>::dumpDecodeCacheStats()
46{
47    using namespace std;
48
49    cerr << "Decode hash table stats @ " << curTick << ":" << endl;
50    cerr << "\tnum entries = " << decodeCache.size() << endl;
51    cerr << "\tnum buckets = " << decodeCache.bucket_count() << endl;
52    vector<int> hist(100, 0);
53    int max_hist = 0;
54    for (int i = 0; i < decodeCache.bucket_count(); ++i) {
55        int count = decodeCache.elems_in_bucket(i);
56        if (count > max_hist)
57            max_hist = count;
58        hist[count]++;
59    }
60    for (int i = 0; i <= max_hist; ++i) {
61        cerr << "\tbuckets of size " << i << " = " << hist[i] << endl;
62    }
63}
64
65
66template StaticInstPtr<AlphaISA>
67StaticInst<AlphaISA>::nullStaticInstPtr;
68
69template <class ISA>
70bool
71StaticInst<ISA>::hasBranchTarget(Addr pc, ExecContext *xc, Addr &tgt)
72{
73    if (isDirectCtrl()) {
74        tgt = branchTarget(pc);
75        return true;
76    }
77
78    if (isIndirectCtrl()) {
79        tgt = branchTarget(xc);
80        return true;
81    }
82
83    return false;
84}
85
86
87// force instantiation of template function(s) above
88template StaticInst<AlphaISA>;
89