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comparison graal/com.oracle.max.asmdis/src/com/sun/max/asm/gen/risc/bitRange/BitRangeOrder.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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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.gen.risc.bitRange;
24
25 /**
26 * The bit range order of an instruction set is how the bit positions of instruction fields
27 * are specified in the architecture manual.
28 */
29 public enum BitRangeOrder {
30
31 DESCENDING {
32 @Override
33 public SimpleBitRange createSimpleBitRange(int firstBitIndex, int lastBitIndex) {
34 return new DescendingBitRange(firstBitIndex, lastBitIndex);
35 }
36 },
37
38 ASCENDING {
39 @Override
40 public SimpleBitRange createSimpleBitRange(int firstBitIndex, int lastBitIndex) {
41 return new AscendingBitRange(firstBitIndex, lastBitIndex);
42 }
43 };
44
45 public abstract SimpleBitRange createSimpleBitRange(int firstBitIndex, int lastBitIndex);
46
47 }