78 lines
2.5 KiB
C++
78 lines
2.5 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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// Bitfield definitions.
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//
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def bitfield OPCODE <6:0>;
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def bitfield NONOPCODE <31:7>;
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// R-Type
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def bitfield ALL <31:0>;
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def bitfield RD <11:7>;
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def bitfield FUNCT3 <14:12>;
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def bitfield RS1 <19:15>;
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def bitfield RS2 <24:20>;
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def bitfield FUNCT7 <31:25>;
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// Bit shifts
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def bitfield SRTYPE <30>;
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def bitfield SHAMT5 <24:20>;
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def bitfield SHAMT6 <25:20>;
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// I-Type
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def bitfield IMM12 <31:20>;
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// S-Type
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def bitfield IMM5 <11:7>;
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def bitfield IMM7 <31:25>;
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// U-Type
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def bitfield IMM20 <31:12>;
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// SB-Type
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def bitfield BIMM12BIT11 <7>;
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def bitfield BIMM12BITS4TO1<11:8>;
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def bitfield IMMSIGN <31>;
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def bitfield BIMM12BITS10TO5 <30:25>;
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// UJ-Type
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def bitfield UJIMMBITS10TO1 <30:21>;
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def bitfield UJIMMBIT11 <20>;
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def bitfield UJIMMBITS19TO12 <19:12>;
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// System
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def bitfield FUNCT12 <31:20>;
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def bitfield ZIMM <19:15>;
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