Mercurial > hg > truffle
view graal/com.oracle.max.asmdis/src/com/sun/max/asm/amd64/AMD64GeneralRegister8.java @ 3733:e233f5660da4
Added Java files from Maxine project.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
parents | |
children | bc8527f3071c |
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/* * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.max.asm.amd64; import com.sun.max.asm.x86.*; import com.sun.max.lang.*; import com.sun.max.util.*; /** */ public enum AMD64GeneralRegister8 implements GeneralRegister<AMD64GeneralRegister8> { AL(0, false), CL(1, false), DL(2, false), BL(3, false), SPL(4, false), BPL(5, false), SIL(6, false), DIL(7, false), R8B(8, false), R9B(9, false), R10B(10, false), R11B(11, false), R12B(12, false), R13B(13, false), R14B(14, false), R15B(15, false), AH(4, true), CH(5, true), DH(6, true), BH(7, true); public static final Enumerator<AMD64GeneralRegister8> ENUMERATOR = new Enumerator<AMD64GeneralRegister8>(AMD64GeneralRegister8.class); private final int value; private final boolean isHighByte; private AMD64GeneralRegister8(int value, boolean isHighByte) { this.value = value; this.isHighByte = isHighByte; } public static AMD64GeneralRegister8 lowFrom(GeneralRegister generalRegister) { return ENUMERATOR.get(generalRegister.id()); } public static AMD64GeneralRegister8 highFrom(GeneralRegister generalRegister) { return ENUMERATOR.get(generalRegister.id() + 16); } public static AMD64GeneralRegister8 fromValue(int value, boolean isRexBytePresent) { if (!isRexBytePresent && value >= AH.value) { return ENUMERATOR.get((value - AH.value) + AH.ordinal()); } return ENUMERATOR.fromValue(value); } public boolean isHighByte() { return isHighByte; } public boolean requiresRexPrefix() { return value >= 4 && !isHighByte; } public WordWidth width() { return WordWidth.BITS_8; } public int id() { return ordinal() % 16; } public int value() { return value; } public long asLong() { return value(); } public String externalValue() { return "%" + name().toLowerCase(); } public String disassembledValue() { return name().toLowerCase(); } public Enumerator<AMD64GeneralRegister8> enumerator() { return ENUMERATOR; } public AMD64GeneralRegister8 exampleValue() { return AL; } }