gem5  v21.1.0.2
thread_state.cc
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2012, 2019 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) 2006 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 
41 #include "cpu/o3/thread_state.hh"
42 
43 #include "cpu/o3/cpu.hh"
44 
45 namespace gem5
46 {
47 
48 namespace o3
49 {
50 
51 ThreadState::ThreadState(CPU *_cpu, int _thread_num, Process *_process) :
52  gem5::ThreadState(_cpu, _thread_num, _process),
53  comInstEventQueue("instruction-based event queue")
54 {}
55 
56 void
58 {
60  // Use the ThreadContext serialization helper to serialize the
61  // TC.
62  gem5::serialize(*tc, cp);
63 }
64 
65 void
67 {
68  // Prevent squashing - we don't have any instructions in
69  // flight that we need to squash since we just instantiated a
70  // clean system.
71  noSquashFromTC = true;
73  // Use the ThreadContext serialization helper to unserialize
74  // the TC.
75  gem5::unserialize(*tc, cp);
76  noSquashFromTC = false;
77 }
78 
79 } // namespace o3
80 } // namespace gem5
gem5::unserialize
void unserialize(ThreadContext &tc, CheckpointIn &cp)
Definition: thread_context.cc:206
gem5::CheckpointIn
Definition: serialize.hh:68
gem5::ThreadState::unserialize
void unserialize(CheckpointIn &cp) override
Unserialize an object.
Definition: thread_state.cc:66
gem5::ThreadState::serialize
void serialize(CheckpointOut &cp) const override
Serialize an object.
Definition: thread_state.cc:60
gem5::o3::CPU
O3CPU class, has each of the stages (fetch through commit) within it, as well as all of the time buff...
Definition: cpu.hh:95
gem5::o3::ThreadState::unserialize
void unserialize(CheckpointIn &cp) override
Unserialize an object.
Definition: thread_state.cc:66
thread_state.hh
gem5::serialize
void serialize(const ThreadContext &tc, CheckpointOut &cp)
Thread context serialization helpers.
Definition: thread_context.cc:157
gem5::o3::ThreadState::serialize
void serialize(CheckpointOut &cp) const override
Serialize an object.
Definition: thread_state.cc:57
gem5::Process
Definition: process.hh:67
gem5::o3::ThreadState::noSquashFromTC
bool noSquashFromTC
Definition: thread_state.hh:84
gem5::o3::ThreadState
Class that has various thread state, such as the status, the current instruction being processed,...
Definition: thread_state.hh:66
gem5::o3::ThreadState::tc
gem5::ThreadContext * tc
Pointer to the ThreadContext of this thread.
Definition: thread_state.hh:100
gem5::CheckpointOut
std::ostream CheckpointOut
Definition: serialize.hh:66
cpu.hh
gem5::o3::ThreadState::ThreadState
ThreadState(CPU *_cpu, int _thread_num, Process *_process)
Definition: thread_state.cc:51
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: decoder.cc:40

Generated on Tue Sep 21 2021 12:25:05 for gem5 by doxygen 1.8.17