events.cc

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/*
 * Copyright (c) 2011, 2016 ARM Limited
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 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
 * terms below provided that you ensure that this notice is replicated
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 * modified or unmodified, in source code or in binary form.
 *
 * Copyright (c) 2004-2006 The Regents of The University of Michigan
 * All rights reserved.
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 * met: redistributions of source code must retain the above copyright
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#include "kern/linux/events.hh"
 
#include <sstream>
 
#include "base/output.hh"
#include "base/trace.hh"
#include "cpu/base.hh"
#include "cpu/thread_context.hh"
#include "kern/linux/helpers.hh"
#include "kern/system_events.hh"
#include "sim/core.hh"
#include "sim/system.hh"
 
namespace gem5
{
 
GEM5_DEPRECATED_NAMESPACE(Linux, linux);
namespace linux
{
 
void
DmesgDump::process(ThreadContext *tc)
{
    inform("Dumping kernel dmesg buffer to %s...\n", fname);
    OutputStream *os = simout.create(fname);
    dumpDmesg(tc, *os->stream());
    simout.close(os);
 
    warn(descr());
}
 
void
KernelPanic::process(ThreadContext *tc)
{
    inform("Dumping kernel dmesg buffer to %s...\n", fname);
    OutputStream *os = simout.create(fname);
    dumpDmesg(tc, *os->stream());
    simout.close(os);
 
    panic(descr());
}
 
void
onUDelay(ThreadContext *tc, uint64_t div, uint64_t mul, uint64_t time)
{
    // convert parameter to ns
    if (div)
        time /= div;
 
    time *= mul;
 
    // Currently, only ARM full-system simulation uses UDelayEvents to skip
    // __delay and __loop_delay functions. One form involves setting quiesce
    // time to 0 with the assumption that quiesce will not happen. To avoid
    // the quiesce handling in this case, only execute the quiesce if time > 0.
    if (time > 0)
        tc->quiesceTick(curTick() + sim_clock::as_int::ns * time);
}
 
} // namespace linux
} // namespace gem5