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/*
* Copyright 2019 Google, Inc.
*
* 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: Gabe Black
*/
#ifndef __ARCH_GENERIC_INTERRUPTS_HH__
#define __ARCH_GENERIC_INTERRUPTS_HH__
#include "params/BaseInterrupts.hh"
#include "sim/sim_object.hh"
class ThreadContext;
class BaseCPU;
class BaseInterrupts : public SimObject
{
protected:
BaseCPU *cpu;
public:
typedef BaseInterruptsParams Params;
BaseInterrupts(Params *p) : SimObject(p) {}
virtual void setCPU(BaseCPU * newCPU) = 0;
const Params *
params() const
{
return dynamic_cast<const Params *>(_params);
}
/*
* Functions for retrieving interrupts for the CPU to handle.
*/
/*
* Return whether there are any interrupts waiting to be recognized.
*/
virtual bool checkInterrupts(ThreadContext *tc) const = 0;
/*
* Return an interrupt to process. This should return an interrupt exactly
* when checkInterrupts returns true.
*/
virtual Fault getInterrupt(ThreadContext *tc) = 0;
/*
* Update interrupt related state after an interrupt has been processed.
*/
virtual void updateIntrInfo(ThreadContext *tc) = 0;
/*
* Old functions needed for compatability but which will be phased out
* eventually.
*/
virtual void
post(int int_num, int index)
{
panic("Interrupts::post unimplemented!\n");
}
virtual void
clear(int int_num, int index)
{
panic("Interrupts::clear unimplemented!\n");
}
virtual void
clearAll()
{
panic("Interrupts::clearAll unimplemented!\n");
}
};
#endif // __ARCH_GENERIC_INTERRUPTS_HH__
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