gem5  v22.1.0.0
nop_static_inst.cc
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2003-2005 The Regents of The University of Michigan
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are
7  * met: redistributions of source code must retain the above copyright
8  * notice, this list of conditions and the following disclaimer;
9  * redistributions in binary form must reproduce the above copyright
10  * notice, this list of conditions and the following disclaimer in the
11  * documentation and/or other materials provided with the distribution;
12  * neither the name of the copyright holders nor the names of its
13  * contributors may be used to endorse or promote products derived from
14  * this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 #include "cpu/nop_static_inst.hh"
30 
31 #include "arch/generic/pcstate.hh"
32 #include "cpu/static_inst.hh"
33 
34 namespace gem5
35 {
36 
37 namespace
38 {
39 
40 class NopStaticInst : public StaticInst
41 {
42  public:
43  NopStaticInst() : StaticInst("gem5 nop", No_OpClass) {}
44 
45  Fault
46  execute(ExecContext *xc, trace::InstRecord *traceData) const override
47  {
48  return NoFault;
49  }
50 
51  void
52  advancePC(PCStateBase &pc) const override
53  {
54  pc.advance();
55  }
56 
57  std::string
58  generateDisassembly(Addr pc,
59  const loader::SymbolTable *symtab) const override
60  {
61  return mnemonic;
62  }
63 };
64 
65 }
66 
67 StaticInstPtr nopStaticInstPtr = new NopStaticInst;
68 
69 } // namespace gem5
Bitfield< 4 > pc
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
std::shared_ptr< FaultBase > Fault
Definition: types.hh:248
uint64_t Addr
Address type This will probably be moved somewhere else in the near future.
Definition: types.hh:147
StaticInstPtr nopStaticInstPtr
Pointer to a statically allocated generic "nop" instruction object.
constexpr decltype(nullptr) NoFault
Definition: types.hh:253

Generated on Wed Dec 21 2022 10:22:30 for gem5 by doxygen 1.9.1