bitfields.isa revision 4541
1// Copyright (c) 2007 The Hewlett-Packard Development Company 2// All rights reserved. 3// 4// Redistribution and use of this software in source and binary forms, 5// with or without modification, are permitted provided that the 6// following conditions are met: 7// 8// The software must be used only for Non-Commercial Use which means any 9// use which is NOT directed to receiving any direct monetary 10// compensation for, or commercial advantage from such use. Illustrative 11// examples of non-commercial use are academic research, personal study, 12// teaching, education and corporate research & development. 13// Illustrative examples of commercial use are distributing products for 14// commercial advantage and providing services using the software for 15// commercial advantage. 16// 17// If you wish to use this software or functionality therein that may be 18// covered by patents for commercial use, please contact: 19// Director of Intellectual Property Licensing 20// Office of Strategy and Technology 21// Hewlett-Packard Company 22// 1501 Page Mill Road 23// Palo Alto, California 94304 24// 25// Redistributions of source code must retain the above copyright notice, 26// this list of conditions and the following disclaimer. Redistributions 27// in binary form must reproduce the above copyright notice, this list of 28// conditions and the following disclaimer in the documentation and/or 29// other materials provided with the distribution. Neither the name of 30// the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its 31// contributors may be used to endorse or promote products derived from 32// this software without specific prior written permission. No right of 33// sublicense is granted herewith. Derivatives of the software and 34// output created using the software may be prepared, but only for 35// Non-Commercial Uses. Derivatives of the software may be shared with 36// others provided: (i) the others agree to abide by the list of 37// conditions herein which includes the Non-Commercial Use restrictions; 38// and (ii) such Derivatives of the software include the above copyright 39// notice to acknowledge the contribution from this software where 40// applicable, this list of conditions and the disclaimer below. 41// 42// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 43// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 44// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 45// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 46// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 47// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 48// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 49// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 50// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 51// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 52// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 53// 54// Authors: Gabe Black 55 56//////////////////////////////////////////////////////////////////// 57// 58// Bitfield definitions. 59// 60 61//Prefixes 62def bitfield REX rex; 63def bitfield LEGACY legacy; 64 65// Pieces of the opcode 66def bitfield OPCODE_NUM opcode.num; 67def bitfield OPCODE_PREFIXA opcode.prefixA; 68def bitfield OPCODE_PREFIXB opcode.prefixB; 69def bitfield OPCODE_OP opcode.op; 70//The top 5 bits of the opcode tend to split the instructions into groups 71def bitfield OPCODE_OP_TOP5 opcode.op.top5; 72def bitfield OPCODE_OP_BOTTOM3 opcode.op.bottom3; 73 74// Immediate fields 75def bitfield IMMEDIATE immediate; 76def bitfield DISPLACEMENT displacement; 77 78//Modifier bytes 79def bitfield MODRM modRM; 80def bitfield MODRM_MOD modRM.mod; 81def bitfield MODRM_REG modRM.reg; 82def bitfield MODRM_RM modRM.rm; 83 84def bitfield SIB sib; 85def bitfield SIB_SCALE sib.scale; 86def bitfield SIB_INDEX sib.index; 87def bitfield SIB_BASE sib.base; 88 89def bitfield OPSIZE opSize; 90def bitfield ADDRSIZE addrSize; 91