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 34120Sgblack@eecs.umich.edu * All rights reserved. 44120Sgblack@eecs.umich.edu * 54120Sgblack@eecs.umich.edu * Redistribution and use in source and binary forms, with or without 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 104120Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer in the 114120Sgblack@eecs.umich.edu * documentation and/or other materials provided with the distribution; 124120Sgblack@eecs.umich.edu * neither the name of the copyright holders nor the names of its 134120Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 144120Sgblack@eecs.umich.edu * this software without specific prior written permission. 154120Sgblack@eecs.umich.edu * 164120Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 174120Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 184120Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 194120Sgblack@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 204120Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 214120Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 224120Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 234120Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 244120Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 254120Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 264120Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 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