1/*
2 * Copyright (c) 2004-2005 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;

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33#include "cpu/cpu_exec_context.hh"
34#include "kern/kernel_stats.hh"
35#include "kern/system_events.hh"
36#include "sim/system.hh"
37
38using namespace TheISA;
39
40void
41SkipFuncEvent::process(ExecContext *xc)
42{
43 Addr newpc = xc->readIntReg(ReturnAddressReg);
44
45 DPRINTF(PCEvent, "skipping %s: pc=%x, newpc=%x\n", description,
46 xc->readPC(), newpc);
47
48 xc->setPC(newpc);
49 xc->setNextPC(xc->readPC() + sizeof(TheISA::MachInst));
50/*
51 BranchPred *bp = xc->getCpuPtr()->getBranchPred();
52 if (bp != NULL) {
53 bp->popRAS(xc->getThreadNum());
54 }
55*/
56}
57
58
59FnEvent::FnEvent(PCEventQueue *q, const std::string &desc, Addr addr,
60 Stats::MainBin *bin)
61 : PCEvent(q, desc, addr), _name(desc), mybin(bin)
62{
63}
64
65void
66FnEvent::process(ExecContext *xc)
67{
68 if (xc->misspeculating())
69 return;
70
71 xc->getSystemPtr()->kernelBinning->call(xc, mybin);
72}
73
74void
75IdleStartEvent::process(ExecContext *xc)
76{
77 if (xc->getKernelStats())
78 xc->getKernelStats()->setIdleProcess(
79 xc->readMiscReg(AlphaISA::IPR_PALtemp23), xc);
80 remove();
81}
82
83void
84InterruptStartEvent::process(ExecContext *xc)
85{
86 if (xc->getKernelStats())
87 xc->getKernelStats()->mode(Kernel::interrupt, xc);
88}
89
90void
91InterruptEndEvent::process(ExecContext *xc)
92{
93 // We go back to kernel, if we are user, inside the rti
94 // pal code we will get switched to user because of the ICM write
95 if (xc->getKernelStats())
96 xc->getKernelStats()->mode(Kernel::kernel, xc);
97}