bitfields.isa revision 4661:44458219add1
1// -*- mode:c++ -*- 2 3// Copyright (c) 2006 The Regents of The University of Michigan 4// All rights reserved. 5// 6// Redistribution and use in source and binary forms, with or without 7// modification, are permitted provided that the following conditions are 8// met: redistributions of source code must retain the above copyright 9// notice, this list of conditions and the following disclaimer; 10// redistributions in binary form must reproduce the above copyright 11// notice, this list of conditions and the following disclaimer in the 12// documentation and/or other materials provided with the distribution; 13// neither the name of the copyright holders nor the names of its 14// contributors may be used to endorse or promote products derived from 15// this software without specific prior written permission. 16// 17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28// 29// Authors: Korey Sewell 30 31//@TODO: Make sure the naming convention is consistent here. 32//////////////////////////////////////////////////////////////////// 33// 34// Bitfield definitions. 35// 36 37def bitfield OPCODE <31:26>; 38def bitfield OPCODE_HI <31:29>; 39def bitfield OPCODE_LO <28:26>; 40 41def bitfield REGIMM <20:16>; 42def bitfield REGIMM_HI <20:19>; 43def bitfield REGIMM_LO <18:16>; 44 45def bitfield FUNCTION < 5: 0>; 46def bitfield FUNCTION_HI < 5: 3>; 47def bitfield FUNCTION_LO < 2: 0>; 48 49def bitfield RS <25:21>; 50def bitfield RS_MSB <25:25>; 51def bitfield RS_HI <25:24>; 52def bitfield RS_LO <23:21>; 53def bitfield RS_SRL <25:22>; 54def bitfield RS_RT <25:16>; 55def bitfield RT <20:16>; 56def bitfield RT_HI <20:19>; 57def bitfield RT_LO <18:16>; 58def bitfield RT_RD <20:11>; 59def bitfield RD <15:11>; 60 61def bitfield INTIMM <15: 0>; 62def bitfield RS_RT_INTIMM <25: 0>; 63 64// Floating-point operate format 65def bitfield FMT <25:21>; 66def bitfield FR <25:21>; 67def bitfield FT <20:16>; 68def bitfield FS <15:11>; 69def bitfield FD <10:6>; 70 71def bitfield ND <17:17>; 72def bitfield TF <16:16>; 73def bitfield MOVCI <16:16>; 74def bitfield MOVCF <16:16>; 75def bitfield SRL <21:21>; 76def bitfield SRLV < 6: 6>; 77def bitfield SA <10: 6>; 78 79// Floating Point Condition Codes 80def bitfield CC <10:8>; 81def bitfield BRANCH_CC <20:18>; 82 83// CP0 Register Select 84def bitfield SEL < 2: 0>; 85 86// INTERRUPTS 87def bitfield SC < 5: 5>; 88 89// Branch format 90def bitfield OFFSET <15: 0>; // displacement 91 92// Jmp format 93def bitfield JMPTARG <25: 0>; 94def bitfield HINT <10: 6>; 95 96def bitfield SYSCALLCODE <25: 6>; 97def bitfield TRAPCODE <15:13>; 98 99// EXT/INS instructions 100def bitfield MSB <15:11>; 101def bitfield LSB <10: 6>; 102 103// M5 instructions 104def bitfield M5FUNC <7:0>; 105 106// DSP instructions 107def bitfield OP <10:6>; 108def bitfield OP_HI <10:9>; 109def bitfield OP_LO <8:6>; 110def bitfield DSPSA <23:21>; 111def bitfield HILOSA <25:20>; 112def bitfield RDDSPMASK <21:16>; 113def bitfield WRDSPMASK <16:11>; 114def bitfield ACSRC <22:21>; 115def bitfield ACDST <12:11>; 116def bitfield BP <12:11>; 117 118// MT Instructions 119def bitfield POS <10: 6>; 120def bitfield MT_U <5:5>; 121def bitfield MT_H <4:4>; 122