gem5  v21.2.1.1
se_translating_port_proxy.cc
Go to the documentation of this file.
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
36  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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 
46 namespace gem5
47 {
48 
50  ThreadContext *tc, AllocType alloc, Request::Flags _flags) :
51  TranslatingPortProxy(tc, _flags), allocating(alloc)
52 {}
53 
54 bool
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
gem5::SETranslatingPortProxy::SETranslatingPortProxy
SETranslatingPortProxy(ThreadContext *tc, AllocType alloc=NextPage, Request::Flags _flags=0)
Definition: se_translating_port_proxy.cc:49
gem5::TranslationGen::Range::size
Addr size
Definition: translation_gen.hh:71
gem5::SETranslatingPortProxy::AllocType
AllocType
Definition: se_translating_port_proxy.hh:53
system.hh
gem5::SETranslatingPortProxy::NextPage
@ NextPage
Definition: se_translating_port_proxy.hh:57
gem5::BaseMMU::Mode
Mode
Definition: mmu.hh:56
gem5::BaseMMU::Write
@ Write
Definition: mmu.hh:56
gem5::TranslationGen::Range::vaddr
Addr vaddr
Definition: translation_gen.hh:70
gem5::TranslationGen::Range
This structure represents a single, contiguous translation, or carries information about whatever fau...
Definition: translation_gen.hh:68
gem5::Process::allocateMem
void allocateMem(Addr vaddr, int64_t size, bool clobber=false)
Definition: process.cc:317
gem5::TranslatingPortProxy
This proxy attempts to translate virtual addresses using the TLBs.
Definition: translating_port_proxy.hh:60
gem5::Flags< FlagsType >
gem5::SETranslatingPortProxy::fixupRange
bool fixupRange(const TranslationGen::Range &range, BaseMMU::Mode mode) const override
Definition: se_translating_port_proxy.cc:55
gem5::ThreadContext
ThreadContext is the external interface to all thread state for anything outside of the CPU.
Definition: thread_context.hh:94
process.hh
gem5::SETranslatingPortProxy::Always
@ Always
Definition: se_translating_port_proxy.hh:55
gem5::ThreadContext::getProcessPtr
virtual Process * getProcessPtr()=0
se_translating_port_proxy.hh
gem5::TranslatingPortProxy::_tc
ThreadContext * _tc
Definition: translating_port_proxy.hh:63
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: tlb.cc:60
gem5::SETranslatingPortProxy::allocating
AllocType allocating
Definition: se_translating_port_proxy.hh:61
gem5::ArmISA::mode
Bitfield< 4, 0 > mode
Definition: misc_types.hh:74

Generated on Wed May 4 2022 12:14:02 for gem5 by doxygen 1.8.17