static_inst.cc revision 56
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 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 29#include <iostream> 30#include "cpu/static_inst.hh" 31#include "sim/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