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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.
37 class FailUnimplemented : public AlphaStaticInst
41 FailUnimplemented(const char *_mnemonic, ExtMachInst _machInst)
42 : AlphaStaticInst(_mnemonic, _machInst, No_OpClass)
44 // don't call execute() (which panics) if we're on a
46 flags[IsNonSpeculative] = true;
52 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
56 * Base class for unimplemented instructions that cause a warning
57 * to be printed (but do not terminate simulation). This
58 * implementation is a little screwy in that it will print a
59 * warning for each instance of a particular unimplemented machine
60 * instruction, not just for each unimplemented opcode. Should
61 * probably make the 'warned' flag a static member of the derived
64 class WarnUnimplemented : public AlphaStaticInst
67 /// Have we warned on this instruction yet?
72 WarnUnimplemented(const char *_mnemonic, ExtMachInst _machInst)
73 : AlphaStaticInst(_mnemonic, _machInst, No_OpClass), warned(false)
75 // don't call execute() (which panics) if we're on a
77 flags[IsNonSpeculative] = true;
83 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
89 FailUnimplemented::generateDisassembly(Addr pc,
90 const SymbolTable *symtab) const
92 return csprintf("%-10s (unimplemented)", mnemonic);
96 WarnUnimplemented::generateDisassembly(Addr pc,
97 const SymbolTable *symtab) const
99 #ifdef SS_COMPATIBLE_DISASSEMBLY
100 return csprintf("%-10s", mnemonic);
102 return csprintf("%-10s (unimplemented)", mnemonic);
109 FailUnimplemented::execute(%(CPU_exec_context)s *xc,
110 Trace::InstRecord *traceData) const
112 panic("attempt to execute unimplemented instruction '%s' "
113 "(inst 0x%08x, opcode 0x%x)", mnemonic, machInst, OPCODE);
114 return new UnimplementedOpcodeFault;
118 WarnUnimplemented::execute(%(CPU_exec_context)s *xc,
119 Trace::InstRecord *traceData) const
122 warn("instruction '%s' unimplemented\n", mnemonic);
131 def format FailUnimpl() {{
132 iop = InstObjParams(name, 'FailUnimplemented')
133 decode_block = BasicDecodeWithMnemonic.subst(iop)
136 def format WarnUnimpl() {{
137 iop = InstObjParams(name, 'WarnUnimplemented')
138 decode_block = BasicDecodeWithMnemonic.subst(iop)
143 * Static instruction class for unknown (illegal) instructions.
144 * These cause simulator termination if they are executed in a
145 * non-speculative mode. This is a leaf class.
147 class Unknown : public AlphaStaticInst
151 Unknown(ExtMachInst _machInst)
152 : AlphaStaticInst("unknown", _machInst, No_OpClass)
154 // don't call execute() (which panics) if we're on a
156 flags[IsNonSpeculative] = true;
162 generateDisassembly(Addr pc, const SymbolTable *symtab) const;