static_inst.cc revision 2665:a124942bacb8
14120Sgblack@eecs.umich.edu/*
24120Sgblack@eecs.umich.edu * Copyright (c) 2003-2005 The Regents of The University of Michigan
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64120Sgblack@eecs.umich.edu * modification, are permitted provided that the following conditions are
74120Sgblack@eecs.umich.edu * met: redistributions of source code must retain the above copyright
84120Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer;
94120Sgblack@eecs.umich.edu * redistributions in binary form must reproduce the above copyright
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274120Sgblack@eecs.umich.edu *
284120Sgblack@eecs.umich.edu * Authors: Steve Reinhardt
294120Sgblack@eecs.umich.edu *          Nathan Binkert
304120Sgblack@eecs.umich.edu */
314120Sgblack@eecs.umich.edu
324120Sgblack@eecs.umich.edu#include <iostream>
334120Sgblack@eecs.umich.edu#include "cpu/static_inst.hh"
344120Sgblack@eecs.umich.edu#include "sim/root.hh"
354120Sgblack@eecs.umich.edu
364120Sgblack@eecs.umich.eduStaticInstPtr StaticInst::nullStaticInstPtr;
374120Sgblack@eecs.umich.edu
384120Sgblack@eecs.umich.edu// Define the decode cache hash map.
394120Sgblack@eecs.umich.eduStaticInst::DecodeCache StaticInst::decodeCache;
404120Sgblack@eecs.umich.edu
414120Sgblack@eecs.umich.eduvoid
424120Sgblack@eecs.umich.eduStaticInst::dumpDecodeCacheStats()
434120Sgblack@eecs.umich.edu{
444120Sgblack@eecs.umich.edu    using namespace std;
454120Sgblack@eecs.umich.edu
464120Sgblack@eecs.umich.edu    cerr << "Decode hash table stats @ " << curTick << ":" << endl;
474120Sgblack@eecs.umich.edu    cerr << "\tnum entries = " << decodeCache.size() << endl;
484120Sgblack@eecs.umich.edu    cerr << "\tnum buckets = " << decodeCache.bucket_count() << endl;
494120Sgblack@eecs.umich.edu    vector<int> hist(100, 0);
504120Sgblack@eecs.umich.edu    int max_hist = 0;
514120Sgblack@eecs.umich.edu    for (int i = 0; i < decodeCache.bucket_count(); ++i) {
524120Sgblack@eecs.umich.edu        int count = decodeCache.elems_in_bucket(i);
534120Sgblack@eecs.umich.edu        if (count > max_hist)
544120Sgblack@eecs.umich.edu            max_hist = count;
554120Sgblack@eecs.umich.edu        hist[count]++;
564120Sgblack@eecs.umich.edu    }
574120Sgblack@eecs.umich.edu    for (int i = 0; i <= max_hist; ++i) {
584120Sgblack@eecs.umich.edu        cerr << "\tbuckets of size " << i << " = " << hist[i] << endl;
594120Sgblack@eecs.umich.edu    }
604120Sgblack@eecs.umich.edu}
614120Sgblack@eecs.umich.edu
624120Sgblack@eecs.umich.edubool
634120Sgblack@eecs.umich.eduStaticInst::hasBranchTarget(Addr pc, ExecContext *xc, Addr &tgt) const
644120Sgblack@eecs.umich.edu{
654120Sgblack@eecs.umich.edu    if (isDirectCtrl()) {
664120Sgblack@eecs.umich.edu        tgt = branchTarget(pc);
674120Sgblack@eecs.umich.edu        return true;
684120Sgblack@eecs.umich.edu    }
694120Sgblack@eecs.umich.edu
704120Sgblack@eecs.umich.edu    if (isIndirectCtrl()) {
714120Sgblack@eecs.umich.edu        tgt = branchTarget(xc);
724120Sgblack@eecs.umich.edu        return true;
734120Sgblack@eecs.umich.edu    }
744120Sgblack@eecs.umich.edu
754120Sgblack@eecs.umich.edu    return false;
764120Sgblack@eecs.umich.edu}
774120Sgblack@eecs.umich.edu
784120Sgblack@eecs.umich.edu