288 lines
7.1 KiB
C++
288 lines
7.1 KiB
C++
/*
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* Copyright (c) 2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "arch/faults.hh"
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#include "arch/isa_traits.hh"
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#include "config/full_system.hh"
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#include "cpu/ozone/dyn_inst.hh"
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#include "kern/kernel_stats.hh"
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using namespace TheISA;
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template <class Impl>
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OzoneDynInst<Impl>::OzoneDynInst(FullCPU *cpu)
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: BaseDynInst<Impl>(0, 0, 0, 0, cpu)
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{
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this->setCompleted();
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initInstPtrs();
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}
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template <class Impl>
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OzoneDynInst<Impl>::OzoneDynInst(ExtMachInst inst, Addr PC, Addr Pred_PC,
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InstSeqNum seq_num, FullCPU *cpu)
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: BaseDynInst<Impl>(inst, PC, Pred_PC, seq_num, cpu)
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{
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initInstPtrs();
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}
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template <class Impl>
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OzoneDynInst<Impl>::OzoneDynInst(StaticInstPtr _staticInst)
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: BaseDynInst<Impl>(_staticInst)
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{
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initInstPtrs();
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}
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template <class Impl>
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OzoneDynInst<Impl>::~OzoneDynInst()
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{
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DPRINTF(BE, "[sn:%lli] destructor called\n", this->seqNum);
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for (int i = 0; i < this->numSrcRegs(); ++i) {
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srcInsts[i] = NULL;
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}
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for (int i = 0; i < this->numDestRegs(); ++i) {
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prevDestInst[i] = NULL;
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}
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dependents.clear();
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}
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template <class Impl>
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Fault
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OzoneDynInst<Impl>::execute()
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{
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// @todo: Pretty convoluted way to avoid squashing from happening when using
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// the XC during an instruction's execution (specifically for instructions
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// that have sideeffects that use the XC). Fix this.
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bool in_syscall = this->thread->inSyscall;
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this->thread->inSyscall = true;
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this->fault = this->staticInst->execute(this, this->traceData);
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this->thread->inSyscall = in_syscall;
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return this->fault;
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}
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template <class Impl>
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Fault
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OzoneDynInst<Impl>::initiateAcc()
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{
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// @todo: Pretty convoluted way to avoid squashing from happening when using
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// the XC during an instruction's execution (specifically for instructions
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// that have sideeffects that use the XC). Fix this.
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bool in_syscall = this->thread->inSyscall;
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this->thread->inSyscall = true;
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this->fault = this->staticInst->initiateAcc(this, this->traceData);
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this->thread->inSyscall = in_syscall;
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return this->fault;
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}
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template <class Impl>
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Fault
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OzoneDynInst<Impl>::completeAcc()
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{
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if (this->isLoad()) {
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this->fault = this->staticInst->completeAcc(this->req->data,
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this,
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this->traceData);
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} else if (this->isStore()) {
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this->fault = this->staticInst->completeAcc((uint8_t*)&this->req->result,
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this,
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this->traceData);
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} else {
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panic("Unknown type!");
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}
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return this->fault;
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}
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template <class Impl>
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bool
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OzoneDynInst<Impl>::srcInstReady(int regIdx)
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{
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return srcInsts[regIdx]->isCompleted();
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}
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template <class Impl>
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void
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OzoneDynInst<Impl>::addDependent(DynInstPtr &dependent_inst)
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{
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dependents.push_back(dependent_inst);
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}
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template <class Impl>
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void
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OzoneDynInst<Impl>::wakeDependents()
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{
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for (int i = 0; i < dependents.size(); ++i) {
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dependents[i]->markSrcRegReady();
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}
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}
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template <class Impl>
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void
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OzoneDynInst<Impl>::initInstPtrs()
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{
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for (int i = 0; i < MaxInstSrcRegs; ++i) {
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srcInsts[i] = NULL;
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}
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iqItValid = false;
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}
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template <class Impl>
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bool
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OzoneDynInst<Impl>::srcsReady()
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{
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for (int i = 0; i < this->numSrcRegs(); ++i) {
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if (!srcInsts[i]->isCompleted())
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return false;
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}
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return true;
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}
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template <class Impl>
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bool
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OzoneDynInst<Impl>::eaSrcsReady()
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{
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for (int i = 1; i < this->numSrcRegs(); ++i) {
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if (!srcInsts[i]->isCompleted())
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return false;
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}
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return true;
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}
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template <class Impl>
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void
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OzoneDynInst<Impl>::clearDependents()
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{
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dependents.clear();
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for (int i = 0; i < this->numSrcRegs(); ++i) {
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srcInsts[i] = NULL;
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}
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for (int i = 0; i < this->numDestRegs(); ++i) {
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prevDestInst[i] = NULL;
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}
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}
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template <class Impl>
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MiscReg
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OzoneDynInst<Impl>::readMiscReg(int misc_reg)
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{
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return this->thread->readMiscReg(misc_reg);
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}
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template <class Impl>
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MiscReg
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OzoneDynInst<Impl>::readMiscRegWithEffect(int misc_reg, Fault &fault)
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{
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return this->thread->readMiscRegWithEffect(misc_reg, fault);
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}
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template <class Impl>
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Fault
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OzoneDynInst<Impl>::setMiscReg(int misc_reg, const MiscReg &val)
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{
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return this->thread->setMiscReg(misc_reg, val);
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}
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template <class Impl>
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Fault
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OzoneDynInst<Impl>::setMiscRegWithEffect(int misc_reg, const MiscReg &val)
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{
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return this->thread->setMiscRegWithEffect(misc_reg, val);
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}
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#if FULL_SYSTEM
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template <class Impl>
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Fault
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OzoneDynInst<Impl>::hwrei()
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{
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if (!this->cpu->inPalMode(this->readPC()))
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return new AlphaISA::UnimplementedOpcodeFault;
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this->setNextPC(this->thread->readMiscReg(AlphaISA::IPR_EXC_ADDR));
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this->cpu->kernelStats->hwrei();
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this->cpu->checkInterrupts = true;
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this->cpu->lockFlag = false;
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// FIXME: XXX check for interrupts? XXX
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return NoFault;
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}
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template <class Impl>
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int
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OzoneDynInst<Impl>::readIntrFlag()
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{
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return this->cpu->readIntrFlag();
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}
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template <class Impl>
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void
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OzoneDynInst<Impl>::setIntrFlag(int val)
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{
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this->cpu->setIntrFlag(val);
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}
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template <class Impl>
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bool
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OzoneDynInst<Impl>::inPalMode()
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{
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return this->cpu->inPalMode();
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}
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template <class Impl>
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void
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OzoneDynInst<Impl>::trap(Fault fault)
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{
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fault->invoke(this->thread->getXCProxy());
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}
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template <class Impl>
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bool
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OzoneDynInst<Impl>::simPalCheck(int palFunc)
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{
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return this->cpu->simPalCheck(palFunc);
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}
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#else
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template <class Impl>
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void
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OzoneDynInst<Impl>::syscall()
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{
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this->cpu->syscall();
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}
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#endif
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