tlb.cc revision 5184:8782de2949e5
16691Stjones1@inf.ed.ac.uk/*
26691Stjones1@inf.ed.ac.uk * Copyright (c) 2001-2005 The Regents of The University of Michigan
36691Stjones1@inf.ed.ac.uk * All rights reserved.
46691Stjones1@inf.ed.ac.uk *
56691Stjones1@inf.ed.ac.uk * Redistribution and use in source and binary forms, with or without
66691Stjones1@inf.ed.ac.uk * modification, are permitted provided that the following conditions are
76691Stjones1@inf.ed.ac.uk * met: redistributions of source code must retain the above copyright
86691Stjones1@inf.ed.ac.uk * notice, this list of conditions and the following disclaimer;
96691Stjones1@inf.ed.ac.uk * redistributions in binary form must reproduce the above copyright
106691Stjones1@inf.ed.ac.uk * notice, this list of conditions and the following disclaimer in the
116691Stjones1@inf.ed.ac.uk * documentation and/or other materials provided with the distribution;
126691Stjones1@inf.ed.ac.uk * neither the name of the copyright holders nor the names of its
136691Stjones1@inf.ed.ac.uk * contributors may be used to endorse or promote products derived from
146691Stjones1@inf.ed.ac.uk * this software without specific prior written permission.
156691Stjones1@inf.ed.ac.uk *
166691Stjones1@inf.ed.ac.uk * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
176691Stjones1@inf.ed.ac.uk * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
186691Stjones1@inf.ed.ac.uk * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
196691Stjones1@inf.ed.ac.uk * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
206691Stjones1@inf.ed.ac.uk * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
216691Stjones1@inf.ed.ac.uk * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
226691Stjones1@inf.ed.ac.uk * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
236691Stjones1@inf.ed.ac.uk * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
246691Stjones1@inf.ed.ac.uk * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
256691Stjones1@inf.ed.ac.uk * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
266691Stjones1@inf.ed.ac.uk * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
276691Stjones1@inf.ed.ac.uk *
286691Stjones1@inf.ed.ac.uk * Authors: Gabe Black
296691Stjones1@inf.ed.ac.uk */
306691Stjones1@inf.ed.ac.uk
316691Stjones1@inf.ed.ac.uk#include <cstring>
326691Stjones1@inf.ed.ac.uk
336691Stjones1@inf.ed.ac.uk#include "arch/mips/tlb.hh"
346691Stjones1@inf.ed.ac.uk
356691Stjones1@inf.ed.ac.uknamespace MipsISA {
366691Stjones1@inf.ed.ac.uk    Fault
379338SAndreas.Sandberg@arm.com    TLB::translate(RequestPtr req, ThreadContext *tc, bool)
386691Stjones1@inf.ed.ac.uk    {
39        Fault fault = GenericTLB::translate(req, tc);
40        if (fault != NoFault)
41            return fault;
42
43        typeof(req->getSize()) size = req->getSize();
44        Addr paddr = req->getPaddr();
45
46        if (!isPowerOf2(size))
47            panic("Invalid request size!\n");
48        if ((size - 1) & paddr)
49            return new GenericAlignmentFault(paddr);
50
51        return NoFault;
52    }
53
54    void
55    TlbEntry::serialize(std::ostream &os)
56    {
57        SERIALIZE_SCALAR(_pageStart);
58    }
59
60    void
61    TlbEntry::unserialize(Checkpoint *cp, const std::string &section)
62    {
63        UNSERIALIZE_SCALAR(_pageStart);
64    }
65};
66
67MipsISA::ITB *
68MipsITBParams::create()
69{
70    return new MipsISA::ITB(this);
71}
72
73MipsISA::DTB *
74MipsDTBParams::create()
75{
76    return new MipsISA::DTB(this);
77}
78