bitfields.isa revision 7087:fb8d5786ff30
1// Copyright (c) 2007 The Hewlett-Packard Development Company 2// All rights reserved. 3// 4// The license below extends only to copyright in the software and shall 5// not be construed as granting a license to any other intellectual 6// property including but not limited to intellectual property relating 7// to a hardware implementation of the functionality of the software 8// licensed hereunder. You may use the software subject to the license 9// terms below provided that you ensure that this notice is replicated 10// unmodified and in its entirety in all distributions of the software, 11// modified or unmodified, in source code or in binary form. 12// 13// Redistribution and use in source and binary forms, with or without 14// modification, are permitted provided that the following conditions are 15// met: redistributions of source code must retain the above copyright 16// notice, this list of conditions and the following disclaimer; 17// redistributions in binary form must reproduce the above copyright 18// notice, this list of conditions and the following disclaimer in the 19// documentation and/or other materials provided with the distribution; 20// neither the name of the copyright holders nor the names of its 21// contributors may be used to endorse or promote products derived from 22// this software without specific prior written permission. 23// 24// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 25// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 26// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 27// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 28// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 29// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 30// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 31// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 32// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 34// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35// 36// Authors: Gabe Black 37 38//////////////////////////////////////////////////////////////////// 39// 40// Bitfield definitions. 41// 42 43//REX prefix 44def bitfield REX rex; 45def bitfield REX_PRESENT rex.present; 46def bitfield REX_W rex.w; 47def bitfield REX_R rex.r; 48def bitfield REX_X rex.x; 49def bitfield REX_B rex.b; 50 51//Legacy prefixes 52def bitfield LEGACY legacy; 53def bitfield LEGACY_DECODEVAL legacy.decodeVal; 54def bitfield LEGACY_REPNE legacy.repne; 55def bitfield LEGACY_REP legacy.rep; 56def bitfield LEGACY_LOCK legacy.lock; 57def bitfield LEGACY_OP legacy.op; 58def bitfield LEGACY_ADDR legacy.addr; 59def bitfield LEGACY_SEG legacy.seg; 60 61// Pieces of the opcode 62def bitfield OPCODE_NUM opcode.num; 63def bitfield OPCODE_PREFIXA opcode.prefixA; 64def bitfield OPCODE_PREFIXB opcode.prefixB; 65def bitfield OPCODE_OP opcode.op; 66//The top 5 bits of the opcode tend to split the instructions into groups 67def bitfield OPCODE_OP_TOP5 opcode.op.top5; 68def bitfield OPCODE_OP_BOTTOM3 opcode.op.bottom3; 69 70// Immediate fields 71def bitfield IMMEDIATE immediate; 72def bitfield DISPLACEMENT displacement; 73 74//Modifier bytes 75def bitfield MODRM modRM; 76def bitfield MODRM_MOD modRM.mod; 77def bitfield MODRM_REG modRM.reg; 78def bitfield MODRM_RM modRM.rm; 79 80def bitfield SIB sib; 81def bitfield SIB_SCALE sib.scale; 82def bitfield SIB_INDEX sib.index; 83def bitfield SIB_BASE sib.base; 84 85def bitfield OPSIZE opSize; 86def bitfield ADDRSIZE addrSize; 87def bitfield STACKSIZE stackSize; 88 89def bitfield MODE mode; 90def bitfield MODE_MODE mode.mode; 91def bitfield MODE_SUBMODE mode.submode; 92