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/*
* Copyright (c) 2016 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* 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
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Copyright (c) 2004-2006 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.
*
* Authors: Nathan Binkert
* Ali Saidi
*/
#ifndef __KERN_LINUX_EVENTS_HH__
#define __KERN_LINUX_EVENTS_HH__
#include "kern/system_events.hh"
namespace Linux {
class DebugPrintkEvent : public SkipFuncEvent
{
public:
DebugPrintkEvent(PCEventQueue *q, const std::string &desc, Addr addr)
: SkipFuncEvent(q, desc, addr) {}
virtual void process(ThreadContext *xc);
};
/**
* Dump the guest kernel's dmesg buffer to a file in gem5's output
* directory and print a warning.
*
* @warn This event uses Linux::dumpDmesg() and comes with the same
* limitations. Most importantly, the kernel's address mappings must
* be available to the translating proxy.
*/
class DmesgDumpEvent : public PCEvent
{
protected:
std::string fname;
public:
DmesgDumpEvent(PCEventQueue *q, const std::string &desc, Addr addr,
const std::string &_fname)
: PCEvent(q, desc, addr), fname(_fname) {}
virtual void process(ThreadContext *xc);
};
/**
* Dump the guest kernel's dmesg buffer to a file in gem5's output
* directory and panic.
*
* @warn This event uses Linux::dumpDmesg() and comes with the same
* limitations. Most importantly, the kernel's address mappings must
* be available to the translating proxy.
*/
class KernelPanicEvent : public PCEvent
{
protected:
std::string fname;
public:
KernelPanicEvent(PCEventQueue *q, const std::string &desc, Addr addr,
const std::string &_fname)
: PCEvent(q, desc, addr), fname(_fname) {}
virtual void process(ThreadContext *xc);
};
/** A class to skip udelay() and related calls in the kernel.
* This class has two additional parameters that take the argument to udelay and
* manipulated it to come up with ns and eventually ticks to quiesce for.
* See descriptions of argDivToNs and argMultToNs below.
*/
class UDelayEvent : public SkipFuncEvent
{
private:
/** value to divide arg by to create ns. This is present beacues the linux
* kernel code sometime precomputes the first multiply that is done in
* udelay() if the parameter is a constant. We need to undo it so here is
* how. */
uint64_t argDivToNs;
/** value to multiple arg by to create ns. Nominally, this is 1000 to
* convert us to ns, but since linux can do some preprocessing of constant
* values something else might be required. */
uint64_t argMultToNs;
public:
UDelayEvent(PCEventQueue *q, const std::string &desc, Addr addr,
uint64_t mult, uint64_t div)
: SkipFuncEvent(q, desc, addr), argDivToNs(div), argMultToNs(mult) {}
virtual void process(ThreadContext *xc);
};
}
#endif
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