137 lines
3.1 KiB
C++
137 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 2004-2005 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
|
|
*/
|
|
|
|
#ifndef __ARCH_ALPHA_VPTR_HH__
|
|
#define __ARCH_ALPHA_VPTR_HH__
|
|
|
|
#include "arch/vtophys.hh"
|
|
#include "arch/isa_traits.hh"
|
|
#include "mem/vport.hh"
|
|
|
|
class ThreadContext;
|
|
|
|
template <class T>
|
|
class VPtr
|
|
{
|
|
public:
|
|
typedef T Type;
|
|
|
|
protected:
|
|
ThreadContext *tc;
|
|
Addr ptr;
|
|
Addr buffer[(sizeof(T)-1)/sizeof(Addr) + 1];
|
|
|
|
public:
|
|
explicit VPtr(ThreadContext *_tc, Addr p = 0)
|
|
: tc(_tc), ptr(p)
|
|
{
|
|
refresh();
|
|
}
|
|
|
|
template <class U>
|
|
VPtr(const VPtr<U> &vp)
|
|
: tc(vp.tc), ptr(vp.ptr)
|
|
{
|
|
refresh();
|
|
}
|
|
|
|
~VPtr()
|
|
{}
|
|
|
|
void
|
|
refresh()
|
|
{
|
|
if (!ptr)
|
|
return;
|
|
|
|
VirtualPort *port = tc->getVirtPort();
|
|
port->readBlob(ptr, buffer, sizeof(T));
|
|
}
|
|
|
|
bool
|
|
operator!() const
|
|
{
|
|
return ptr == 0;
|
|
}
|
|
|
|
VPtr<T>
|
|
operator+(int offset)
|
|
{
|
|
return VPtr<T>(tc, ptr + offset);
|
|
}
|
|
|
|
const VPtr<T> &
|
|
operator+=(int offset)
|
|
{
|
|
ptr += offset;
|
|
refresh();
|
|
|
|
return *this;
|
|
}
|
|
|
|
const VPtr<T> &
|
|
operator=(Addr p)
|
|
{
|
|
ptr = p;
|
|
refresh();
|
|
|
|
return *this;
|
|
}
|
|
|
|
template <class U>
|
|
const VPtr<T> &
|
|
operator=(const VPtr<U> &vp)
|
|
{
|
|
tc = vp.tc;
|
|
ptr = vp.ptr;
|
|
refresh();
|
|
|
|
return *this;
|
|
}
|
|
|
|
operator T *()
|
|
{
|
|
return (T *)buffer;
|
|
}
|
|
|
|
T *
|
|
operator->()
|
|
{
|
|
return (T *)buffer;
|
|
}
|
|
|
|
T &
|
|
operator*()
|
|
{
|
|
return *(T *)buffer;
|
|
}
|
|
};
|
|
|
|
#endif // __ARCH_ALPHA_VPTR_HH__
|