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comparison graal/com.oracle.max.asmdis/src/com/sun/max/asm/amd64/AMD64IndexRegister32.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.amd64;
24
25 import com.sun.max.asm.x86.*;
26 import com.sun.max.lang.*;
27 import com.sun.max.util.*;
28
29 /**
30 * Aliases for 32-bit AMD64 general registers to be used as index registers.
31 */
32 public enum AMD64IndexRegister32 implements GeneralRegister<AMD64IndexRegister32> {
33
34 EAX_INDEX,
35 ECX_INDEX,
36 EDX_INDEX,
37 EBX_INDEX,
38 // no ESP_INDEX!
39 EBP_INDEX,
40 ESI_INDEX,
41 EDI_INDEX,
42 R8D_INDEX,
43 R9D_INDEX,
44 R10D_INDEX,
45 R11D_INDEX,
46 R12D_INDEX,
47 R13D_INDEX,
48 R14D_INDEX,
49 R15D_INDEX;
50
51 public static final Enumerator<AMD64IndexRegister32> ENUMERATOR = new Enumerator<AMD64IndexRegister32>(AMD64IndexRegister32.class);
52
53 public static AMD64IndexRegister32 from(GeneralRegister generalRegister) {
54 int ordinal = generalRegister.id();
55 if (ordinal >= AMD64GeneralRegister32.ESP.id()) {
56 ordinal--;
57 }
58 return ENUMERATOR.get(ordinal);
59 }
60
61 public WordWidth width() {
62 return WordWidth.BITS_32;
63 }
64
65 public int id() {
66 int ordinal = ordinal();
67 if (ordinal >= AMD64GeneralRegister32.ESP.id()) {
68 ordinal++;
69 }
70 return ordinal;
71 }
72
73 public int value() {
74 return id();
75 }
76
77 public long asLong() {
78 return value();
79 }
80
81 public String externalValue() {
82 return AMD64GeneralRegister32.from(this).externalValue();
83 }
84
85 public String disassembledValue() {
86 return AMD64GeneralRegister32.from(this).disassembledValue();
87 }
88
89 public Enumerator<AMD64IndexRegister32> enumerator() {
90 return ENUMERATOR;
91 }
92
93 public AMD64IndexRegister32 exampleValue() {
94 return ESI_INDEX;
95 }
96 }