1/*
2 * Copyright (c) 2006-2007 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 * Authors: Gabe Black
29 *          Steve Reinhardt
30 */
31
32#ifndef __ARCH_SPARC_INSTS_NOP_HH__
33#define __ARCH_SPARC_INSTS_NOP_HH__
34
35#include "arch/sparc/insts/static_inst.hh"
36
37namespace SparcISA
38{
39
40////////////////////////////////////////////////////////////////////
41//
42// Nop instruction
43//
44
45/**
46 * Nop class.
47 */
48class Nop : public SparcStaticInst
49{
50  public:
51    // Constructor
52    Nop(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
53        SparcStaticInst(mnem, _machInst, __opClass)
54    {
55        flags[IsNop] = true;
56    }
57
58    Fault
59    execute(ExecContext *xc, Trace::InstRecord *traceData) const override
60    {
61        return NoFault;
62    }
63
64    std::string
65    generateDisassembly(Addr pc, const SymbolTable *symtab) const override
66    {
67        std::stringstream response;
68        printMnemonic(response, mnemonic);
69        return response.str();
70    }
71};
72
73}
74
75#endif // __ARCH_SPARC_INSTS_NOP_HH__
76