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+/*
+ * Copyright (c) 2004-2006 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Kevin Lim
+ */
+
+#include <iostream>
+#include <set>
+#include <string>
+#include <sstream>
+
+#include "base/cprintf.hh"
+#include "base/trace.hh"
+
+#include "arch/faults.hh"
+#include "cpu/exetrace.hh"
+#include "mem/request.hh"
+
+#include "cpu/base_dyn_inst.hh"
+
+using namespace std;
+using namespace TheISA;
+
+#define NOHASH
+#ifndef NOHASH
+
+#include "base/hashmap.hh"
+
+unsigned int MyHashFunc(const BaseDynInst *addr)
+{
+ unsigned a = (unsigned)addr;
+ unsigned hash = (((a >> 14) ^ ((a >> 2) & 0xffff))) & 0x7FFFFFFF;
+
+ return hash;
+}
+
+typedef m5::hash_map<const BaseDynInst *, const BaseDynInst *, MyHashFunc>
+my_hash_t;
+
+my_hash_t thishash;
+#endif
+
+template <class Impl>
+BaseDynInst<Impl>::BaseDynInst(ExtMachInst machInst, Addr inst_PC,
+ Addr pred_PC, InstSeqNum seq_num,
+ ImplCPU *cpu)
+ : staticInst(machInst), traceData(NULL), cpu(cpu)
+{
+ seqNum = seq_num;
+
+ PC = inst_PC;
+ nextPC = PC + sizeof(MachInst);
+ predPC = pred_PC;
+
+ initVars();
+}
+
+template <class Impl>
+BaseDynInst<Impl>::BaseDynInst(StaticInstPtr &_staticInst)
+ : staticInst(_staticInst), traceData(NULL)
+{
+ seqNum = 0;
+ initVars();
+}
+
+template <class Impl>
+void
+BaseDynInst<Impl>::initVars()
+{
+ req = NULL;
+ memData = NULL;
+ effAddr = 0;
+ physEffAddr = 0;
+
+ readyRegs = 0;
+
+ instResult.integer = 0;
+
+ status.reset();
+
+ eaCalcDone = false;
+ memOpDone = false;
+
+ lqIdx = -1;
+ sqIdx = -1;
+
+ // Eventually make this a parameter.
+ threadNumber = 0;
+
+ // Also make this a parameter, or perhaps get it from xc or cpu.
+ asid = 0;
+
+ // Initialize the fault to be NoFault.
+ fault = NoFault;
+
+ ++instcount;
+
+ if (instcount > 1500) {
+ cpu->dumpInsts();
+#ifdef DEBUG
+ dumpSNList();
+#endif
+ assert(instcount <= 1500);
+ }
+
+ DPRINTF(DynInst, "DynInst: [sn:%lli] Instruction created. Instcount=%i\n",
+ seqNum, instcount);
+
+#ifdef DEBUG
+ cpu->snList.insert(seqNum);
+#endif
+}
+
+template <class Impl>
+BaseDynInst<Impl>::~BaseDynInst()
+{
+ if (req) {
+ delete req;
+ }
+
+ if (memData) {
+ delete [] memData;
+ }
+
+ if (traceData) {
+ delete traceData;
+ }
+
+ fault = NoFault;
+
+ --instcount;
+
+ DPRINTF(DynInst, "DynInst: [sn:%lli] Instruction destroyed. Instcount=%i\n",
+ seqNum, instcount);
+#ifdef DEBUG
+ cpu->snList.erase(seqNum);
+#endif
+}
+
+#ifdef DEBUG
+template <class Impl>
+void
+BaseDynInst<Impl>::dumpSNList()
+{
+ std::set<InstSeqNum>::iterator sn_it = cpu->snList.begin();
+
+ int count = 0;
+ while (sn_it != cpu->snList.end()) {
+ cprintf("%i: [sn:%lli] not destroyed\n", count, (*sn_it));
+ count++;
+ sn_it++;
+ }
+}
+#endif
+
+template <class Impl>
+void
+BaseDynInst<Impl>::prefetch(Addr addr, unsigned flags)
+{
+ // This is the "functional" implementation of prefetch. Not much
+ // happens here since prefetches don't affect the architectural
+ // state.
+/*
+ // Generate a MemReq so we can translate the effective address.
+ MemReqPtr req = new MemReq(addr, thread->getXCProxy(), 1, flags);
+ req->asid = asid;
+
+ // Prefetches never cause faults.
+ fault = NoFault;
+
+ // note this is a local, not BaseDynInst::fault
+ Fault trans_fault = cpu->translateDataReadReq(req);
+
+ if (trans_fault == NoFault && !(req->flags & UNCACHEABLE)) {
+ // It's a valid address to cacheable space. Record key MemReq
+ // parameters so we can generate another one just like it for
+ // the timing access without calling translate() again (which
+ // might mess up the TLB).
+ effAddr = req->vaddr;
+ physEffAddr = req->paddr;
+ memReqFlags = req->flags;
+ } else {
+ // Bogus address (invalid or uncacheable space). Mark it by
+ // setting the eff_addr to InvalidAddr.
+ effAddr = physEffAddr = MemReq::inval_addr;
+ }
+
+ if (traceData) {
+ traceData->setAddr(addr);
+ }
+*/
+}
+
+template <class Impl>
+void
+BaseDynInst<Impl>::writeHint(Addr addr, int size, unsigned flags)
+{
+ // Not currently supported.
+}
+
+/**
+ * @todo Need to find a way to get the cache block size here.
+ */
+template <class Impl>
+Fault
+BaseDynInst<Impl>::copySrcTranslate(Addr src)
+{
+ // Not currently supported.
+ return NoFault;
+}
+
+/**
+ * @todo Need to find a way to get the cache block size here.
+ */
+template <class Impl>
+Fault
+BaseDynInst<Impl>::copy(Addr dest)
+{
+ // Not currently supported.
+ return NoFault;
+}
+
+template <class Impl>
+void
+BaseDynInst<Impl>::dump()
+{
+ cprintf("T%d : %#08d `", threadNumber, PC);
+ cout << staticInst->disassemble(PC);
+ cprintf("'\n");
+}
+
+template <class Impl>
+void
+BaseDynInst<Impl>::dump(std::string &outstring)
+{
+ std::ostringstream s;
+ s << "T" << threadNumber << " : 0x" << PC << " "
+ << staticInst->disassemble(PC);
+
+ outstring = s.str();
+}
+
+template <class Impl>
+void
+BaseDynInst<Impl>::markSrcRegReady()
+{
+ if (++readyRegs == numSrcRegs()) {
+ status.set(CanIssue);
+ }
+}
+
+template <class Impl>
+void
+BaseDynInst<Impl>::markSrcRegReady(RegIndex src_idx)
+{
+ _readySrcRegIdx[src_idx] = true;
+
+ markSrcRegReady();
+}
+
+template <class Impl>
+bool
+BaseDynInst<Impl>::eaSrcsReady()
+{
+ // For now I am assuming that src registers 1..n-1 are the ones that the
+ // EA calc depends on. (i.e. src reg 0 is the source of the data to be
+ // stored)
+
+ for (int i = 1; i < numSrcRegs(); ++i) {
+ if (!_readySrcRegIdx[i])
+ return false;
+ }
+
+ return true;
+}