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/*
* Copyright (c) 2004 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 "cpu/exec_context.hh"
#include "cpu/base_cpu.hh"
#include "cpu/full_cpu/bpred.hh"
#include "cpu/full_cpu/full_cpu.hh"
#include "kern/kernel_stats.hh"
#include "kern/system_events.hh"
#include "sim/system.hh"
void
SkipFuncEvent::process(ExecContext *xc)
{
Addr newpc = xc->regs.intRegFile[ReturnAddressReg];
DPRINTF(PCEvent, "skipping %s: pc=%x, newpc=%x\n", description,
xc->regs.pc, newpc);
xc->regs.pc = newpc;
xc->regs.npc = xc->regs.pc + sizeof(MachInst);
BranchPred *bp = xc->cpu->getBranchPred();
if (bp != NULL) {
bp->popRAS(xc->thread_num);
}
}
FnEvent::FnEvent(PCEventQueue *q, const std::string &desc, Stats::MainBin *bin)
: PCEvent(q, desc), _name(desc), mybin(bin)
{
}
void
FnEvent::process(ExecContext *xc)
{
if (xc->misspeculating())
return;
xc->system->kernelBinning->call(xc, mybin);
}
void
IdleStartEvent::process(ExecContext *xc)
{
xc->kernelStats->setIdleProcess(xc->regs.ipr[AlphaISA::IPR_PALtemp23]);
remove();
}
void
InterruptStartEvent::process(ExecContext *xc)
{
xc->kernelStats->mode(Kernel::interrupt);
}
void
InterruptEndEvent::process(ExecContext *xc)
{
// We go back to kernel, if we are user, inside the rti
// pal code we will get switched to user because of the ICM write
xc->kernelStats->mode(Kernel::kernel);
}
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