bitfields.isa revision 13931
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 QUADRANT <1:0>; 39def bitfield OPCODE <6:2>; 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 BIMM12BITS10TO5 <30:25>; 68def bitfield IMMSIGN <31>; 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 94// Compressed 95def bitfield COPCODE <15:13>; 96def bitfield CFUNCT1 <12>; 97def bitfield CFUNCT2HIGH <11:10>; 98def bitfield CFUNCT2LOW <6:5>; 99def bitfield RC1 <11:7>; 100def bitfield RC2 <6:2>; 101def bitfield RP1 <9:7>; 102def bitfield RP2 <4:2>; 103def bitfield FC1 <11:7>; 104def bitfield FC2 <6:2>; 105def bitfield FP2 <4:2>; 106def bitfield CJUMPIMM <12:2>; 107def bitfield CJUMPIMM3TO1 <5:3>; 108def bitfield CJUMPIMM4TO4 <11:11>; 109def bitfield CJUMPIMM5TO5 <2:2>; 110def bitfield CJUMPIMM6TO6 <7:7>; 111def bitfield CJUMPIMM7TO7 <6:6>; 112def bitfield CJUMPIMM9TO8 <10:9>; 113def bitfield CJUMPIMM10TO10 <8:8>; 114def bitfield CJUMPIMMSIGN <12:12>; 115def bitfield CIMM8 <12:5>; 116def bitfield CIMM6 <12:7>; 117def bitfield CIMM5 <6:2>; 118def bitfield CIMM3 <12:10>; 119def bitfield CIMM2 <6:5>; 120def bitfield CIMM1 <12>; 121