gem5 v24.0.0.0
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se_translating_port_proxy.cc
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1/*
2 * Copyright (c) 2011 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Copyright (c) 2001-2005 The Regents of The University of Michigan
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution;
24 * neither the name of the copyright holders nor the names of its
25 * contributors may be used to endorse or promote products derived from
26 * this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 */
40
42
43#include "sim/process.hh"
44#include "sim/system.hh"
45
46namespace gem5
47{
48
50 ThreadContext *tc, AllocType alloc, Request::Flags _flags) :
51 TranslatingPortProxy(tc, _flags), allocating(alloc)
52{}
53
54bool
56 BaseMMU::Mode mode) const
57{
58 auto *process = _tc->getProcessPtr();
59
60 if (mode == BaseMMU::Write) {
61 if (allocating == Always) {
62 process->allocateMem(range.vaddr, range.size);
63 return true;
64 } else if (allocating == NextPage &&
65 process->fixupFault(range.vaddr)) {
66 // We've accessed the next page on the stack.
67 return true;
68 }
69 }
70 return false;
71}
72
73} // namespace gem5
void allocateMem(Addr vaddr, int64_t size, bool clobber=false)
Definition process.cc:317
SETranslatingPortProxy(ThreadContext *tc, AllocType alloc=NextPage, Request::Flags _flags=0)
bool fixupRange(const TranslationGen::Range &range, BaseMMU::Mode mode) const override
ThreadContext is the external interface to all thread state for anything outside of the CPU.
virtual Process * getProcessPtr()=0
This proxy attempts to translate virtual addresses using the TLBs.
Bitfield< 4, 0 > mode
Definition misc_types.hh:74
Copyright (c) 2024 - Pranith Kumar Copyright (c) 2020 Inria All rights reserved.
Definition binary32.hh:36
This structure represents a single, contiguous translation, or carries information about whatever fau...

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