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

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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// Authors: Korey Sewell
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 */

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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, binary:%s)", mnemonic, machInst, OPCODE,
121 inst2string(machInst));
122 return new UnimplementedOpcodeFault;
123 }
124
125 Fault
126 WarnUnimplemented::execute(%(CPU_exec_context)s *xc,
127 Trace::InstRecord *traceData) const
128 {
129 if (!warned) {
130 warn("instruction '%s' unimplemented\n", mnemonic);
131 warned = true;
132 }
133
134 return NoFault;
135 }
136}};
137
138
139def format FailUnimpl() {{
140 iop = InstObjParams(name, 'FailUnimplemented')
141 decode_block = BasicDecodeWithMnemonic.subst(iop)
142}};
143
144def format WarnUnimpl() {{
145 iop = InstObjParams(name, 'WarnUnimplemented')
146 decode_block = BasicDecodeWithMnemonic.subst(iop)
147}};
148
149output header {{
150 /**
151 * Static instruction class for unknown (illegal) instructions.
152 * These cause simulator termination if they are executed in a
153 * non-speculative mode. This is a leaf class.
154 */
155 class Unknown : public MipsStaticInst
156 {
157 public:
158 /// Constructor
159 Unknown(MachInst _machInst)
160 : MipsStaticInst("unknown", _machInst, No_OpClass)
161 {
162 // don't call execute() (which panics) if we're on a
163 // speculative path
164 flags[IsNonSpeculative] = true;
165 }
166
167 %(BasicExecDeclare)s
168
169 std::string
170 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
171 };
172}};
173