81 lines
2.8 KiB
C++
81 lines
2.8 KiB
C++
// -*- mode:c++ -*-
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// Copyright (c) 2015 RISC-V Foundation
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// Copyright (c) 2016 The University of Virginia
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met: redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer;
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// redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution;
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// neither the name of the copyright holders nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Authors: Maxwell Walter
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// Alec Roelke
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////////////////////////////////////////////////////////////////////
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//
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// Unknown instructions
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//
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output header {{
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/**
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* Static instruction class for unknown (illegal) instructions.
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* These cause simulator termination if they are executed in a
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* non-speculative mode. This is a leaf class.
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*/
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class Unknown : public RiscvStaticInst
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{
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public:
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/// Constructor
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Unknown(MachInst _machInst)
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: RiscvStaticInst("unknown", _machInst, No_OpClass)
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{
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flags[IsNonSpeculative] = true;
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}
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%(BasicExecDeclare)s
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std::string
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generateDisassembly(Addr pc, const SymbolTable *symtab) const;
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};
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}};
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output decoder {{
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std::string
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Unknown::generateDisassembly(Addr pc, const SymbolTable *symtab) const
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{
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return csprintf("unknown opcode 0x%02x", OPCODE);
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}
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}};
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output exec {{
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Fault
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Unknown::execute(CPU_EXEC_CONTEXT *xc, Trace::InstRecord *traceData) const
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{
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Fault fault = std::make_shared<UnknownInstFault>();
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return fault;
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}
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}};
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def format Unknown() {{
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decode_block = 'return new Unknown(machInst);\n'
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}};
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