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/*
* Copyright (c) 2007 The Hewlett-Packard Development Company
* 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.
*
* 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
*/
#include "arch/x86/vtophys.hh"
#include <string>
#include "arch/x86/pagetable_walker.hh"
#include "arch/x86/tlb.hh"
#include "base/trace.hh"
#include "cpu/thread_context.hh"
#include "debug/VtoPhys.hh"
using namespace std;
namespace X86ISA
{
Addr
vtophys(Addr vaddr)
{
panic("Need access to page tables\n");
}
Addr
vtophys(ThreadContext *tc, Addr vaddr)
{
Walker *walker = tc->getDTBPtr()->getWalker();
unsigned logBytes;
Addr addr = vaddr;
Fault fault = walker->startFunctional(
tc, addr, logBytes, BaseTLB::Read);
if (fault != NoFault)
panic("vtophys page walk returned fault\n");
Addr masked_addr = vaddr & mask(logBytes);
Addr paddr = addr | masked_addr;
DPRINTF(VtoPhys, "vtophys(%#x) -> %#x\n", vaddr, paddr);
return paddr;
}
}
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