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comparison graal/com.oracle.max.asmdis/src/com/sun/max/asm/amd64/AMD64IndexRegister64.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 64-bit AMD64 general registers to be used as index registers.
31 */
32 public enum AMD64IndexRegister64 implements GeneralRegister<AMD64IndexRegister64> {
33
34 RAX_INDEX,
35 RCX_INDEX,
36 RDX_INDEX,
37 RBX_INDEX,
38 // no RSP_INDEX!
39 RBP_INDEX,
40 RSI_INDEX,
41 RDI_INDEX,
42 R8_INDEX,
43 R9_INDEX,
44 R10_INDEX,
45 R11_INDEX,
46 R12_INDEX,
47 R13_INDEX,
48 R14_INDEX,
49 R15_INDEX;
50
51 public static AMD64IndexRegister64 from(GeneralRegister generalRegister) {
52 int ordinal = generalRegister.id();
53 if (ordinal >= AMD64GeneralRegister64.RSP.id()) {
54 ordinal--;
55 }
56 return ENUMERATOR.get(ordinal);
57 }
58
59 public int id() {
60 int ordinal = ordinal();
61 if (ordinal >= AMD64GeneralRegister64.RSP.id()) {
62 ordinal++;
63 }
64 return ordinal;
65 }
66
67 public WordWidth width() {
68 return WordWidth.BITS_64;
69 }
70
71 public int value() {
72 return id();
73 }
74
75 public long asLong() {
76 return value();
77 }
78
79 public String externalValue() {
80 return AMD64GeneralRegister64.from(this).externalValue();
81 }
82
83 public String disassembledValue() {
84 return AMD64GeneralRegister64.from(this).disassembledValue();
85 }
86
87 public Enumerator<AMD64IndexRegister64> enumerator() {
88 return ENUMERATOR;
89 }
90
91 public AMD64IndexRegister64 exampleValue() {
92 return RSI_INDEX;
93 }
94
95 public static final Enumerator<AMD64IndexRegister64> ENUMERATOR = new Enumerator<AMD64IndexRegister64>(AMD64IndexRegister64.class);
96 }