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
28
31////////////////////////////////////////////////////////////////////
32//
33// Unimplemented instructions
34//
35
29output header {{
30 /**
31 * Static instruction class for unimplemented instructions that
32 * cause simulator termination. Note that these are recognized
33 * (legal) instructions that the simulator does not support; the
34 * 'Unknown' class is used for unrecognized/illegal instructions.
35 * This is a leaf class.
36 */

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91 {
92 return csprintf("%-10s (unimplemented)", mnemonic);
93 }
94
95 std::string
96 WarnUnimplemented::generateDisassembly(Addr pc,
97 const SymbolTable *symtab) const
98 {
106#ifdef SS_COMPATIBLE_DISASSEMBLY
107 return csprintf("%-10s", mnemonic);
108#else
99 return csprintf("%-10s (unimplemented)", mnemonic);
110#endif
100 }
101}};
102
103output exec {{
104 Fault
105 FailUnimplemented::execute(%(CPU_exec_context)s *xc,
106 Trace::InstRecord *traceData) const
107 {
108 panic("attempt to execute unimplemented instruction '%s' "
109 "(inst 0x%08x, opcode 0x%x, binary:%s)", mnemonic, machInst, OPCODE,
110 inst2string(machInst));
111 return new UnimplementedOpcodeFault;
112 }
113
114 Fault
115 WarnUnimplemented::execute(%(CPU_exec_context)s *xc,
116 Trace::InstRecord *traceData) const
117 {
118 if (!warned) {
130 warn("instruction '%s' unimplemented\n", mnemonic);
119 warn("\tinstruction '%s' unimplemented\n", mnemonic);
120 warned = true;
121 }
122
123 return NoFault;
124 }
125}};
126
127
128def format FailUnimpl() {{
129 iop = InstObjParams(name, 'FailUnimplemented')
130 decode_block = BasicDecodeWithMnemonic.subst(iop)
131}};
132
133def format WarnUnimpl() {{
134 iop = InstObjParams(name, 'WarnUnimplemented')
135 decode_block = BasicDecodeWithMnemonic.subst(iop)
136}};
137
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