1// -*- mode:c++ -*-
2
3// Copyright (c) 2007-2008 The Florida State University
4// Copyright (c) 2009 The University of Edinburgh
5// All rights reserved.
6//
7// Redistribution and use in source and binary forms, with or without
8// modification, are permitted provided that the following conditions are
9// met: redistributions of source code must retain the above copyright
10// notice, this list of conditions and the following disclaimer;
11// redistributions in binary form must reproduce the above copyright
12// notice, this list of conditions and the following disclaimer in the
13// documentation and/or other materials provided with the distribution;
14// neither the name of the copyright holders nor the names of its
15// contributors may be used to endorse or promote products derived from
16// this software without specific prior written permission.
17//
18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29//
30// Authors: Stephen Hines
31// Timothy M. Jones
32
33////////////////////////////////////////////////////////////////////
34//
35// Unimplemented instructions
36//
37
38output header {{
39 /**
40 * Static instruction class for unimplemented instructions that
41 * cause simulator termination. Note that these are recognized
42 * (legal) instructions that the simulator does not support; the
43 * 'Unknown' class is used for unrecognized/illegal instructions.
44 * This is a leaf class.
45 */
46 class FailUnimplemented : public PowerStaticInst
47 {
48 public:
49 /// Constructor
50 FailUnimplemented(const char *_mnemonic, MachInst _machInst)
51 : PowerStaticInst(_mnemonic, _machInst, No_OpClass)
52 {
53 // don't call execute() (which panics) if we're on a
54 // speculative path
55 flags[IsNonSpeculative] = true;
56 }
57
| 1// -*- mode:c++ -*-
2
3// Copyright (c) 2007-2008 The Florida State University
4// Copyright (c) 2009 The University of Edinburgh
5// All rights reserved.
6//
7// Redistribution and use in source and binary forms, with or without
8// modification, are permitted provided that the following conditions are
9// met: redistributions of source code must retain the above copyright
10// notice, this list of conditions and the following disclaimer;
11// redistributions in binary form must reproduce the above copyright
12// notice, this list of conditions and the following disclaimer in the
13// documentation and/or other materials provided with the distribution;
14// neither the name of the copyright holders nor the names of its
15// contributors may be used to endorse or promote products derived from
16// this software without specific prior written permission.
17//
18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29//
30// Authors: Stephen Hines
31// Timothy M. Jones
32
33////////////////////////////////////////////////////////////////////
34//
35// Unimplemented instructions
36//
37
38output header {{
39 /**
40 * Static instruction class for unimplemented instructions that
41 * cause simulator termination. Note that these are recognized
42 * (legal) instructions that the simulator does not support; the
43 * 'Unknown' class is used for unrecognized/illegal instructions.
44 * This is a leaf class.
45 */
46 class FailUnimplemented : public PowerStaticInst
47 {
48 public:
49 /// Constructor
50 FailUnimplemented(const char *_mnemonic, MachInst _machInst)
51 : PowerStaticInst(_mnemonic, _machInst, No_OpClass)
52 {
53 // don't call execute() (which panics) if we're on a
54 // speculative path
55 flags[IsNonSpeculative] = true;
56 }
57
|
58 Fault execute(ExecContext *, Trace::InstRecord *) const;
| 58 Fault execute(ExecContext *, Trace::InstRecord *) const override;
|
59
| 59
|
60 std::string
61 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
| 60 std::string generateDisassembly(
61 Addr pc, const SymbolTable *symtab) const override;
|
62 };
63
64 /**
65 * Base class for unimplemented instructions that cause a warning
66 * to be printed (but do not terminate simulation). This
67 * implementation is a little screwy in that it will print a
68 * warning for each instance of a particular unimplemented machine
69 * instruction, not just for each unimplemented opcode. Should
70 * probably make the 'warned' flag a static member of the derived
71 * class.
72 */
73 class WarnUnimplemented : public PowerStaticInst
74 {
75 private:
76 /// Have we warned on this instruction yet?
77 mutable bool warned;
78
79 public:
80 /// Constructor
81 WarnUnimplemented(const char *_mnemonic, MachInst _machInst)
82 : PowerStaticInst(_mnemonic, _machInst, No_OpClass), warned(false)
83 {
84 // don't call execute() (which panics) if we're on a
85 // speculative path
86 flags[IsNonSpeculative] = true;
87 }
88
| 62 };
63
64 /**
65 * Base class for unimplemented instructions that cause a warning
66 * to be printed (but do not terminate simulation). This
67 * implementation is a little screwy in that it will print a
68 * warning for each instance of a particular unimplemented machine
69 * instruction, not just for each unimplemented opcode. Should
70 * probably make the 'warned' flag a static member of the derived
71 * class.
72 */
73 class WarnUnimplemented : public PowerStaticInst
74 {
75 private:
76 /// Have we warned on this instruction yet?
77 mutable bool warned;
78
79 public:
80 /// Constructor
81 WarnUnimplemented(const char *_mnemonic, MachInst _machInst)
82 : PowerStaticInst(_mnemonic, _machInst, No_OpClass), warned(false)
83 {
84 // don't call execute() (which panics) if we're on a
85 // speculative path
86 flags[IsNonSpeculative] = true;
87 }
88
|
89 Fault execute(ExecContext *, Trace::InstRecord *) const;
| 89 Fault execute(ExecContext *, Trace::InstRecord *) const override;
|
90
| 90
|
91 std::string
92 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
| 91 std::string generateDisassembly(
92 Addr pc, const SymbolTable *symtab) const override;
|
93 };
94}};
95
96output decoder {{
97 std::string
98 FailUnimplemented::generateDisassembly(Addr pc,
99 const SymbolTable *symtab) const
100 {
101 return csprintf("%-10s (unimplemented)", mnemonic);
102 }
103
104 std::string
105 WarnUnimplemented::generateDisassembly(Addr pc,
106 const SymbolTable *symtab) const
107 {
108 return csprintf("%-10s (unimplemented)", mnemonic);
109 }
110}};
111
112output exec {{
113 Fault
114 FailUnimplemented::execute(ExecContext *xc,
115 Trace::InstRecord *traceData) const
116 {
117 panic("attempt to execute unimplemented instruction '%s' "
118 "(inst 0x%08x, opcode 0x%x, binary:%s)", mnemonic, machInst, OPCODE,
119 inst2string(machInst));
120 return std::make_shared<UnimplementedOpcodeFault>();
121 }
122
123 Fault
124 WarnUnimplemented::execute(ExecContext *xc,
125 Trace::InstRecord *traceData) const
126 {
127 if (!warned) {
128 warn("\tinstruction '%s' unimplemented\n", mnemonic);
129 warned = true;
130 }
131
132 return NoFault;
133 }
134}};
135
136
137def format FailUnimpl() {{
138 iop = InstObjParams(name, 'FailUnimplemented')
139 decode_block = BasicDecodeWithMnemonic.subst(iop)
140}};
141
142def format WarnUnimpl() {{
143 iop = InstObjParams(name, 'WarnUnimplemented')
144 decode_block = BasicDecodeWithMnemonic.subst(iop)
145}};
146
| 93 };
94}};
95
96output decoder {{
97 std::string
98 FailUnimplemented::generateDisassembly(Addr pc,
99 const SymbolTable *symtab) const
100 {
101 return csprintf("%-10s (unimplemented)", mnemonic);
102 }
103
104 std::string
105 WarnUnimplemented::generateDisassembly(Addr pc,
106 const SymbolTable *symtab) const
107 {
108 return csprintf("%-10s (unimplemented)", mnemonic);
109 }
110}};
111
112output exec {{
113 Fault
114 FailUnimplemented::execute(ExecContext *xc,
115 Trace::InstRecord *traceData) const
116 {
117 panic("attempt to execute unimplemented instruction '%s' "
118 "(inst 0x%08x, opcode 0x%x, binary:%s)", mnemonic, machInst, OPCODE,
119 inst2string(machInst));
120 return std::make_shared<UnimplementedOpcodeFault>();
121 }
122
123 Fault
124 WarnUnimplemented::execute(ExecContext *xc,
125 Trace::InstRecord *traceData) const
126 {
127 if (!warned) {
128 warn("\tinstruction '%s' unimplemented\n", mnemonic);
129 warned = true;
130 }
131
132 return NoFault;
133 }
134}};
135
136
137def format FailUnimpl() {{
138 iop = InstObjParams(name, 'FailUnimplemented')
139 decode_block = BasicDecodeWithMnemonic.subst(iop)
140}};
141
142def format WarnUnimpl() {{
143 iop = InstObjParams(name, 'WarnUnimplemented')
144 decode_block = BasicDecodeWithMnemonic.subst(iop)
145}};
146
|