1// Copyright (c) 2006-2007 The Regents of The University of Michigan
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met: redistributions of source code must retain the above copyright
7// notice, this list of conditions and the following disclaimer;
8// redistributions in binary form must reproduce the above copyright
9// notice, this list of conditions and the following disclaimer in the
10// documentation and/or other materials provided with the distribution;
11// neither the name of the copyright holders nor the names of its
12// contributors may be used to endorse or promote products derived from
13// this software without specific prior written permission.
14//
15// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26//
27// Authors: Gabe Black
28// Steve Reinhardt
29
30////////////////////////////////////////////////////////////////////
31//
32// Nop instruction
33//
34
35// Per-cpu-model nop execute method.
36def template NopExec {{
| 1// Copyright (c) 2006-2007 The Regents of The University of Michigan
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met: redistributions of source code must retain the above copyright
7// notice, this list of conditions and the following disclaimer;
8// redistributions in binary form must reproduce the above copyright
9// notice, this list of conditions and the following disclaimer in the
10// documentation and/or other materials provided with the distribution;
11// neither the name of the copyright holders nor the names of its
12// contributors may be used to endorse or promote products derived from
13// this software without specific prior written permission.
14//
15// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26//
27// Authors: Gabe Black
28// Steve Reinhardt
29
30////////////////////////////////////////////////////////////////////
31//
32// Nop instruction
33//
34
35// Per-cpu-model nop execute method.
36def template NopExec {{
|
37
38 Fault execute(ExecContext *xc, Trace::InstRecord *traceData) const
39 {
40 // Nothing to see here, move along
41 return NoFault;
42 }
| |
43}};
44
45output header {{
46 /**
47 * Nop class.
48 */
49 class Nop : public SparcStaticInst
50 {
51 public:
52 // Constructor
53 Nop(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
54 SparcStaticInst(mnem, _machInst, __opClass)
55 {
56 flags[IsNop] = true;
57 }
58
| 37}};
38
39output header {{
40 /**
41 * Nop class.
42 */
43 class Nop : public SparcStaticInst
44 {
45 public:
46 // Constructor
47 Nop(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
48 SparcStaticInst(mnem, _machInst, __opClass)
49 {
50 flags[IsNop] = true;
51 }
52
|
59 // All Nop instructions do the same thing, so this can be
60 // defined here. Nops can be defined directly, so there
61 // needs to be a default implementation. Interpolate via
62 // template so i gets expanded to a set of
63 // cpu-model-specific functions.
64 %(NopExec)s
| 53 Fault
54 execute(ExecContext *xc, Trace::InstRecord *traceData) const
55 {
56 return NoFault;
57 }
|
65
66 std::string generateDisassembly(Addr pc,
67 const SymbolTable *symtab) const;
68 };
69}};
70
71output decoder {{
72 std::string Nop::generateDisassembly(Addr pc,
73 const SymbolTable *symtab) const
74 {
75 std::stringstream response;
76 printMnemonic(response, mnemonic);
77 return response.str();
78 }
79}};
80
81def template NopExecute {{
82 Fault %(class_name)s::execute(ExecContext *xc,
83 Trace::InstRecord *traceData) const
84 {
85 // Nothing to see here, move along
86 return NoFault;
87 }
88}};
89
90// Primary format for integer operate instructions:
91def format Nop(code, *opt_flags) {{
92 iop = InstObjParams(name, Name, 'Nop', code, opt_flags)
93 header_output = BasicDeclare.subst(iop)
94 decoder_output = BasicConstructor.subst(iop)
95 decode_block = BasicDecode.subst(iop)
96 exec_output = NopExecute.subst(iop)
97}};
| 58
59 std::string generateDisassembly(Addr pc,
60 const SymbolTable *symtab) const;
61 };
62}};
63
64output decoder {{
65 std::string Nop::generateDisassembly(Addr pc,
66 const SymbolTable *symtab) const
67 {
68 std::stringstream response;
69 printMnemonic(response, mnemonic);
70 return response.str();
71 }
72}};
73
74def template NopExecute {{
75 Fault %(class_name)s::execute(ExecContext *xc,
76 Trace::InstRecord *traceData) const
77 {
78 // Nothing to see here, move along
79 return NoFault;
80 }
81}};
82
83// Primary format for integer operate instructions:
84def format Nop(code, *opt_flags) {{
85 iop = InstObjParams(name, Name, 'Nop', code, opt_flags)
86 header_output = BasicDeclare.subst(iop)
87 decoder_output = BasicConstructor.subst(iop)
88 decode_block = BasicDecode.subst(iop)
89 exec_output = NopExecute.subst(iop)
90}};
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