gem5/cpu/ozone/dyn_inst_impl.hh
Kevin Lim e704960c80 Updates to Ozone model for quiesce, store conditionals.
--HG--
extra : convert_revision : 72ddd75ad0b5783aca9484e7d178c2915ee8e355
2006-04-24 17:10:06 -04:00

287 lines
7.1 KiB
C++

/*
* Copyright (c) 2005 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.
*/
#include "arch/faults.hh"
#include "arch/isa_traits.hh"
#include "config/full_system.hh"
#include "cpu/ozone/dyn_inst.hh"
#include "kern/kernel_stats.hh"
using namespace TheISA;
template <class Impl>
OzoneDynInst<Impl>::OzoneDynInst(FullCPU *cpu)
: BaseDynInst<Impl>(0, 0, 0, 0, cpu)
{
this->setCompleted();
initInstPtrs();
}
template <class Impl>
OzoneDynInst<Impl>::OzoneDynInst(ExtMachInst inst, Addr PC, Addr Pred_PC,
InstSeqNum seq_num, FullCPU *cpu)
: BaseDynInst<Impl>(inst, PC, Pred_PC, seq_num, cpu)
{
initInstPtrs();
}
template <class Impl>
OzoneDynInst<Impl>::OzoneDynInst(StaticInstPtr _staticInst)
: BaseDynInst<Impl>(_staticInst)
{
initInstPtrs();
}
template <class Impl>
OzoneDynInst<Impl>::~OzoneDynInst()
{
DPRINTF(BE, "[sn:%lli] destructor called\n", this->seqNum);
for (int i = 0; i < this->numSrcRegs(); ++i) {
srcInsts[i] = NULL;
}
for (int i = 0; i < this->numDestRegs(); ++i) {
prevDestInst[i] = NULL;
}
dependents.clear();
}
template <class Impl>
Fault
OzoneDynInst<Impl>::execute()
{
// @todo: Pretty convoluted way to avoid squashing from happening when using
// the XC during an instruction's execution (specifically for instructions
// that have sideeffects that use the XC). Fix this.
bool in_syscall = this->thread->inSyscall;
this->thread->inSyscall = true;
this->fault = this->staticInst->execute(this, this->traceData);
this->thread->inSyscall = in_syscall;
return this->fault;
}
template <class Impl>
Fault
OzoneDynInst<Impl>::initiateAcc()
{
// @todo: Pretty convoluted way to avoid squashing from happening when using
// the XC during an instruction's execution (specifically for instructions
// that have sideeffects that use the XC). Fix this.
bool in_syscall = this->thread->inSyscall;
this->thread->inSyscall = true;
this->fault = this->staticInst->initiateAcc(this, this->traceData);
this->thread->inSyscall = in_syscall;
return this->fault;
}
template <class Impl>
Fault
OzoneDynInst<Impl>::completeAcc()
{
if (this->isLoad()) {
this->fault = this->staticInst->completeAcc(this->req->data,
this,
this->traceData);
} else if (this->isStore()) {
this->fault = this->staticInst->completeAcc((uint8_t*)&this->req->result,
this,
this->traceData);
} else {
panic("Unknown type!");
}
return this->fault;
}
template <class Impl>
bool
OzoneDynInst<Impl>::srcInstReady(int regIdx)
{
return srcInsts[regIdx]->isCompleted();
}
template <class Impl>
void
OzoneDynInst<Impl>::addDependent(DynInstPtr &dependent_inst)
{
dependents.push_back(dependent_inst);
}
template <class Impl>
void
OzoneDynInst<Impl>::wakeDependents()
{
for (int i = 0; i < dependents.size(); ++i) {
dependents[i]->markSrcRegReady();
}
}
template <class Impl>
void
OzoneDynInst<Impl>::initInstPtrs()
{
for (int i = 0; i < MaxInstSrcRegs; ++i) {
srcInsts[i] = NULL;
}
iqItValid = false;
}
template <class Impl>
bool
OzoneDynInst<Impl>::srcsReady()
{
for (int i = 0; i < this->numSrcRegs(); ++i) {
if (!srcInsts[i]->isCompleted())
return false;
}
return true;
}
template <class Impl>
bool
OzoneDynInst<Impl>::eaSrcsReady()
{
for (int i = 1; i < this->numSrcRegs(); ++i) {
if (!srcInsts[i]->isCompleted())
return false;
}
return true;
}
template <class Impl>
void
OzoneDynInst<Impl>::clearDependents()
{
dependents.clear();
for (int i = 0; i < this->numSrcRegs(); ++i) {
srcInsts[i] = NULL;
}
for (int i = 0; i < this->numDestRegs(); ++i) {
prevDestInst[i] = NULL;
}
}
template <class Impl>
MiscReg
OzoneDynInst<Impl>::readMiscReg(int misc_reg)
{
return this->thread->readMiscReg(misc_reg);
}
template <class Impl>
MiscReg
OzoneDynInst<Impl>::readMiscRegWithEffect(int misc_reg, Fault &fault)
{
return this->thread->readMiscRegWithEffect(misc_reg, fault);
}
template <class Impl>
Fault
OzoneDynInst<Impl>::setMiscReg(int misc_reg, const MiscReg &val)
{
return this->thread->setMiscReg(misc_reg, val);
}
template <class Impl>
Fault
OzoneDynInst<Impl>::setMiscRegWithEffect(int misc_reg, const MiscReg &val)
{
return this->thread->setMiscRegWithEffect(misc_reg, val);
}
#if FULL_SYSTEM
template <class Impl>
Fault
OzoneDynInst<Impl>::hwrei()
{
if (!this->cpu->inPalMode(this->readPC()))
return new AlphaISA::UnimplementedOpcodeFault;
this->setNextPC(this->thread->readMiscReg(AlphaISA::IPR_EXC_ADDR));
this->cpu->kernelStats->hwrei();
this->cpu->checkInterrupts = true;
this->cpu->lockFlag = false;
// FIXME: XXX check for interrupts? XXX
return NoFault;
}
template <class Impl>
int
OzoneDynInst<Impl>::readIntrFlag()
{
return this->cpu->readIntrFlag();
}
template <class Impl>
void
OzoneDynInst<Impl>::setIntrFlag(int val)
{
this->cpu->setIntrFlag(val);
}
template <class Impl>
bool
OzoneDynInst<Impl>::inPalMode()
{
return this->cpu->inPalMode();
}
template <class Impl>
void
OzoneDynInst<Impl>::trap(Fault fault)
{
fault->invoke(this->thread->getXCProxy());
}
template <class Impl>
bool
OzoneDynInst<Impl>::simPalCheck(int palFunc)
{
return this->cpu->simPalCheck(palFunc);
}
#else
template <class Impl>
void
OzoneDynInst<Impl>::syscall()
{
this->cpu->syscall();
}
#endif