bitfields.isa revision 12119:e9ef3ee3171d
1// -*- mode:c++ -*- 2 3// Copyright (c) 2015 RISC-V Foundation 4// Copyright (c) 2016 The University of Virginia 5// All rights reserved. 6// 7// Redistribution and use in source and binary forms, with or without 8// modification, are permitted provided that the following conditions are 9// met: redistributions of source code must retain the above copyright 10// notice, this list of conditions and the following disclaimer; 11// redistributions in binary form must reproduce the above copyright 12// notice, this list of conditions and the following disclaimer in the 13// documentation and/or other materials provided with the distribution; 14// neither the name of the copyright holders nor the names of its 15// contributors may be used to endorse or promote products derived from 16// this software without specific prior written permission. 17// 18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29// 30// Authors: Maxwell Walter 31// Alec Roelke 32 33//////////////////////////////////////////////////////////////////// 34// 35// Bitfield definitions. 36// 37 38def bitfield OPCODE <6:0>; 39def bitfield NONOPCODE <31:7>; 40 41// R-Type 42def bitfield ALL <31:0>; 43def bitfield RD <11:7>; 44def bitfield FUNCT3 <14:12>; 45def bitfield RS1 <19:15>; 46def bitfield RS2 <24:20>; 47def bitfield FUNCT7 <31:25>; 48 49// Bit shifts 50def bitfield SRTYPE <30>; 51def bitfield SHAMT5 <24:20>; 52def bitfield SHAMT6 <25:20>; 53 54// I-Type 55def bitfield IMM12 <31:20>; 56 57// S-Type 58def bitfield IMM5 <11:7>; 59def bitfield IMM7 <31:25>; 60 61// U-Type 62def bitfield IMM20 <31:12>; 63 64// SB-Type 65def bitfield BIMM12BIT11 <7>; 66def bitfield BIMM12BITS4TO1<11:8>; 67def bitfield IMMSIGN <31>; 68def bitfield BIMM12BITS10TO5 <30:25>; 69 70// UJ-Type 71def bitfield UJIMMBITS10TO1 <30:21>; 72def bitfield UJIMMBIT11 <20>; 73def bitfield UJIMMBITS19TO12 <19:12>; 74 75// System 76def bitfield FUNCT12 <31:20>; 77def bitfield CSRIMM <19:15>; 78 79// Floating point 80def bitfield FD <11:7>; 81def bitfield FS1 <19:15>; 82def bitfield FS2 <24:20>; 83def bitfield FS3 <31:27>; 84 85def bitfield ROUND_MODE <14:12>; 86def bitfield CONV_SGN <24:20>; 87def bitfield FUNCT2 <26:25>; 88 89// AMO 90def bitfield AMOFUNCT <31:27>; 91def bitfield AQ <26>; 92def bitfield RL <25>; 93