1// -*- mode:c++ -*-
2
3// Copyright (c) 2003-2005 The Regents of The University of Michigan
4// All rights reserved.
5//
6// Redistribution and use in source and binary forms, with or without
7// modification, are permitted provided that the following conditions are
8// met: redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer;
10// redistributions in binary form must reproduce the above copyright
11// notice, this list of conditions and the following disclaimer in the
12// documentation and/or other materials provided with the distribution;
13// neither the name of the copyright holders nor the names of its
14// contributors may be used to endorse or promote products derived from
15// this software without specific prior written permission.
16//
17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
| 1// -*- mode:c++ -*-
2
3// Copyright (c) 2003-2005 The Regents of The University of Michigan
4// All rights reserved.
5//
6// Redistribution and use in source and binary forms, with or without
7// modification, are permitted provided that the following conditions are
8// met: redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer;
10// redistributions in binary form must reproduce the above copyright
11// notice, this list of conditions and the following disclaimer in the
12// documentation and/or other materials provided with the distribution;
13// neither the name of the copyright holders nor the names of its
14// contributors may be used to endorse or promote products derived from
15// this software without specific prior written permission.
16//
17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
28
29////////////////////////////////////////////////////////////////////
30//
31// Unimplemented instructions
32//
33
34output header {{
35 /**
36 * Static instruction class for unimplemented instructions that
37 * cause simulator termination. Note that these are recognized
38 * (legal) instructions that the simulator does not support; the
39 * 'Unknown' class is used for unrecognized/illegal instructions.
40 * This is a leaf class.
41 */
42 class FailUnimplemented : public AlphaStaticInst
43 {
44 public:
45 /// Constructor
46 FailUnimplemented(const char *_mnemonic, ExtMachInst _machInst)
47 : AlphaStaticInst(_mnemonic, _machInst, No_OpClass)
48 {
49 // don't call execute() (which panics) if we're on a
50 // speculative path
51 flags[IsNonSpeculative] = true;
52 }
53
54 %(BasicExecDeclare)s
55
56 std::string
57 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
58 };
59
60 /**
61 * Base class for unimplemented instructions that cause a warning
62 * to be printed (but do not terminate simulation). This
63 * implementation is a little screwy in that it will print a
64 * warning for each instance of a particular unimplemented machine
65 * instruction, not just for each unimplemented opcode. Should
66 * probably make the 'warned' flag a static member of the derived
67 * class.
68 */
69 class WarnUnimplemented : public AlphaStaticInst
70 {
71 private:
72 /// Have we warned on this instruction yet?
73 mutable bool warned;
74
75 public:
76 /// Constructor
77 WarnUnimplemented(const char *_mnemonic, ExtMachInst _machInst)
78 : AlphaStaticInst(_mnemonic, _machInst, No_OpClass), warned(false)
79 {
80 // don't call execute() (which panics) if we're on a
81 // speculative path
82 flags[IsNonSpeculative] = true;
83 }
84
85 %(BasicExecDeclare)s
86
87 std::string
88 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
89 };
90}};
91
92output decoder {{
93 std::string
94 FailUnimplemented::generateDisassembly(Addr pc,
95 const SymbolTable *symtab) const
96 {
97 return csprintf("%-10s (unimplemented)", mnemonic);
98 }
99
100 std::string
101 WarnUnimplemented::generateDisassembly(Addr pc,
102 const SymbolTable *symtab) const
103 {
104#ifdef SS_COMPATIBLE_DISASSEMBLY
105 return csprintf("%-10s", mnemonic);
106#else
107 return csprintf("%-10s (unimplemented)", mnemonic);
108#endif
109 }
110}};
111
112output exec {{
113 Fault
114 FailUnimplemented::execute(%(CPU_exec_context)s *xc,
115 Trace::InstRecord *traceData) const
116 {
117 panic("attempt to execute unimplemented instruction '%s' "
118 "(inst 0x%08x, opcode 0x%x)", mnemonic, machInst, OPCODE);
119 return new UnimplementedOpcodeFault;
120 }
121
122 Fault
123 WarnUnimplemented::execute(%(CPU_exec_context)s *xc,
124 Trace::InstRecord *traceData) const
125 {
126 if (!warned) {
127 warn("instruction '%s' unimplemented\n", mnemonic);
128 warned = true;
129 }
130
131 return NoFault;
132 }
133}};
134
135
136def format FailUnimpl() {{
137 iop = InstObjParams(name, 'FailUnimplemented')
138 decode_block = BasicDecodeWithMnemonic.subst(iop)
139}};
140
141def format WarnUnimpl() {{
142 iop = InstObjParams(name, 'WarnUnimplemented')
143 decode_block = BasicDecodeWithMnemonic.subst(iop)
144}};
145
146output header {{
147 /**
148 * Static instruction class for unknown (illegal) instructions.
149 * These cause simulator termination if they are executed in a
150 * non-speculative mode. This is a leaf class.
151 */
152 class Unknown : public AlphaStaticInst
153 {
154 public:
155 /// Constructor
156 Unknown(ExtMachInst _machInst)
157 : AlphaStaticInst("unknown", _machInst, No_OpClass)
158 {
159 // don't call execute() (which panics) if we're on a
160 // speculative path
161 flags[IsNonSpeculative] = true;
162 }
163
164 %(BasicExecDeclare)s
165
166 std::string
167 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
168 };
169}};
170
| 30
31////////////////////////////////////////////////////////////////////
32//
33// Unimplemented instructions
34//
35
36output header {{
37 /**
38 * Static instruction class for unimplemented instructions that
39 * cause simulator termination. Note that these are recognized
40 * (legal) instructions that the simulator does not support; the
41 * 'Unknown' class is used for unrecognized/illegal instructions.
42 * This is a leaf class.
43 */
44 class FailUnimplemented : public AlphaStaticInst
45 {
46 public:
47 /// Constructor
48 FailUnimplemented(const char *_mnemonic, ExtMachInst _machInst)
49 : AlphaStaticInst(_mnemonic, _machInst, No_OpClass)
50 {
51 // don't call execute() (which panics) if we're on a
52 // speculative path
53 flags[IsNonSpeculative] = true;
54 }
55
56 %(BasicExecDeclare)s
57
58 std::string
59 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
60 };
61
62 /**
63 * Base class for unimplemented instructions that cause a warning
64 * to be printed (but do not terminate simulation). This
65 * implementation is a little screwy in that it will print a
66 * warning for each instance of a particular unimplemented machine
67 * instruction, not just for each unimplemented opcode. Should
68 * probably make the 'warned' flag a static member of the derived
69 * class.
70 */
71 class WarnUnimplemented : public AlphaStaticInst
72 {
73 private:
74 /// Have we warned on this instruction yet?
75 mutable bool warned;
76
77 public:
78 /// Constructor
79 WarnUnimplemented(const char *_mnemonic, ExtMachInst _machInst)
80 : AlphaStaticInst(_mnemonic, _machInst, No_OpClass), warned(false)
81 {
82 // don't call execute() (which panics) if we're on a
83 // speculative path
84 flags[IsNonSpeculative] = true;
85 }
86
87 %(BasicExecDeclare)s
88
89 std::string
90 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
91 };
92}};
93
94output decoder {{
95 std::string
96 FailUnimplemented::generateDisassembly(Addr pc,
97 const SymbolTable *symtab) const
98 {
99 return csprintf("%-10s (unimplemented)", mnemonic);
100 }
101
102 std::string
103 WarnUnimplemented::generateDisassembly(Addr pc,
104 const SymbolTable *symtab) const
105 {
106#ifdef SS_COMPATIBLE_DISASSEMBLY
107 return csprintf("%-10s", mnemonic);
108#else
109 return csprintf("%-10s (unimplemented)", mnemonic);
110#endif
111 }
112}};
113
114output exec {{
115 Fault
116 FailUnimplemented::execute(%(CPU_exec_context)s *xc,
117 Trace::InstRecord *traceData) const
118 {
119 panic("attempt to execute unimplemented instruction '%s' "
120 "(inst 0x%08x, opcode 0x%x)", mnemonic, machInst, OPCODE);
121 return new UnimplementedOpcodeFault;
122 }
123
124 Fault
125 WarnUnimplemented::execute(%(CPU_exec_context)s *xc,
126 Trace::InstRecord *traceData) const
127 {
128 if (!warned) {
129 warn("instruction '%s' unimplemented\n", mnemonic);
130 warned = true;
131 }
132
133 return NoFault;
134 }
135}};
136
137
138def format FailUnimpl() {{
139 iop = InstObjParams(name, 'FailUnimplemented')
140 decode_block = BasicDecodeWithMnemonic.subst(iop)
141}};
142
143def format WarnUnimpl() {{
144 iop = InstObjParams(name, 'WarnUnimplemented')
145 decode_block = BasicDecodeWithMnemonic.subst(iop)
146}};
147
148output header {{
149 /**
150 * Static instruction class for unknown (illegal) instructions.
151 * These cause simulator termination if they are executed in a
152 * non-speculative mode. This is a leaf class.
153 */
154 class Unknown : public AlphaStaticInst
155 {
156 public:
157 /// Constructor
158 Unknown(ExtMachInst _machInst)
159 : AlphaStaticInst("unknown", _machInst, No_OpClass)
160 {
161 // don't call execute() (which panics) if we're on a
162 // speculative path
163 flags[IsNonSpeculative] = true;
164 }
165
166 %(BasicExecDeclare)s
167
168 std::string
169 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
170 };
171}};
172
|