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comparison graal/com.oracle.max.asmdis/src/com/sun/max/asm/ia32/IA32GeneralRegister8.java @ 3733:e233f5660da4

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Added Java files from Maxine project.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sat, 17 Dec 2011 19:59:18 +0100
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children bc8527f3071c
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3732:3e2e8b8abdaf 3733:e233f5660da4
1 /*
2 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.sun.max.asm.ia32;
24
25 import com.sun.max.asm.x86.*;
26 import com.sun.max.lang.*;
27 import com.sun.max.util.*;
28
29 /**
30 */
31 public enum IA32GeneralRegister8 implements GeneralRegister<IA32GeneralRegister8> {
32
33 // Note: keep the order such that 'value()' can rely on ordinals:
34
35 AL, CL, DL, BL, AH, CH, DH, BH;
36
37 public static final Enumerator<IA32GeneralRegister8> ENUMERATOR = new Enumerator<IA32GeneralRegister8>(IA32GeneralRegister8.class);
38
39 private static final IA32GeneralRegister8[] lowRegisters = {AL, CL, DL, BL};
40
41 public static IA32GeneralRegister8 lowFrom(GeneralRegister generalRegister) {
42 return lowRegisters[generalRegister.id()];
43 }
44
45 private static final IA32GeneralRegister8[] highRegisters = {AH, CH, DH, BH};
46
47 public static IA32GeneralRegister8 highFrom(GeneralRegister generalRegister) {
48 return highRegisters[generalRegister.id()];
49 }
50
51 public WordWidth width() {
52 return WordWidth.BITS_8;
53 }
54
55 public int value() {
56 return ordinal();
57 }
58
59 public int id() {
60 return ordinal() % 4;
61 }
62
63 public long asLong() {
64 return value();
65 }
66
67 public String externalValue() {
68 return "%" + name().toLowerCase();
69 }
70
71 public String disassembledValue() {
72 return name().toLowerCase();
73 }
74
75 public Enumerator<IA32GeneralRegister8> enumerator() {
76 return ENUMERATOR;
77 }
78
79 public IA32GeneralRegister8 exampleValue() {
80 return AL;
81 }
82 }