90 lines
4.1 KiB
Plaintext
90 lines
4.1 KiB
Plaintext
// Copyright (c) 2007 The Hewlett-Packard Development Company
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// All rights reserved.
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//
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// Redistribution and use of this software in source and binary forms,
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// with or without modification, are permitted provided that the
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// following conditions are met:
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//
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// The software must be used only for Non-Commercial Use which means any
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// use which is NOT directed to receiving any direct monetary
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// compensation for, or commercial advantage from such use. Illustrative
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// examples of non-commercial use are academic research, personal study,
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// teaching, education and corporate research & development.
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// Illustrative examples of commercial use are distributing products for
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// commercial advantage and providing services using the software for
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// commercial advantage.
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//
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// If you wish to use this software or functionality therein that may be
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// covered by patents for commercial use, please contact:
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// Director of Intellectual Property Licensing
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// Office of Strategy and Technology
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// Hewlett-Packard Company
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// 1501 Page Mill Road
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// Palo Alto, California 94304
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//
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// Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer. Redistributions
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// in binary form must reproduce the above copyright notice, this list of
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// conditions and the following disclaimer in the documentation and/or
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// other materials provided with the distribution. Neither the name of
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// the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, 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. No right of
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// sublicense is granted herewith. Derivatives of the software and
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// output created using the software may be prepared, but only for
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// Non-Commercial Uses. Derivatives of the software may be shared with
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// others provided: (i) the others agree to abide by the list of
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// conditions herein which includes the Non-Commercial Use restrictions;
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// and (ii) such Derivatives of the software include the above copyright
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// notice to acknowledge the contribution from this software where
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// applicable, this list of conditions and the disclaimer below.
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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: Gabe Black
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////////////////////////////////////////////////////////////////////
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//
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// The actual decoder specification
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//
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decode OPCODE_NUM default Unknown::unknown()
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{
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0x0: M5InternalError::error(
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{{"Saw an ExtMachInst with zero opcode bytes!"}});
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//1 byte opcodes
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##include "one_byte_opcodes.isa"
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//2 byte opcodes
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##include "two_byte_opcodes.isa"
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//3 byte opcodes
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0x3: decode OPCODE_PREFIXA {
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0xF0: decode OPCODE_PREFIXB {
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//We don't handle these properly in the predecoder yet, so there's
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//no reason to implement them for now.
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0x38: decode OPCODE_OP {
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default: FailUnimpl::sseThreeEight();
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}
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0x3A: decode OPCODE_OP {
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default: FailUnimpl::sseThreeA();
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}
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0xF0: decode OPCODE_OP {
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default: FailUnimpl::threednow();
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}
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default: M5InternalError::error(
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{{"Unexpected second opcode byte in three byte opcode!"}});
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}
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default: M5InternalError::error(
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{{"Unexpected first opcode byte in three byte opcode!"}});
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}
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}
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