1 /* |
|
2 * Copyright (c) 2002, 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 */ |
|
24 |
|
25 package sun.jvm.hotspot.asm.sparc; |
|
26 |
|
27 import sun.jvm.hotspot.asm.*; |
|
28 |
|
29 public class SPARCSaveInstruction extends SPARCFormat3AInstruction { |
|
30 final private boolean trivial; |
|
31 public SPARCSaveInstruction(SPARCRegister rs1, ImmediateOrRegister operand2, SPARCRegister rd) { |
|
32 super("save", SAVE, rs1, operand2, rd); |
|
33 SPARCRegister G0 = SPARCRegisters.G0; |
|
34 trivial = (rs1 == G0 && operand2 == G0 && rd == G0); |
|
35 } |
|
36 |
|
37 public boolean isTrivial() { |
|
38 return trivial; |
|
39 } |
|
40 |
|
41 protected String getOperand2String() { |
|
42 StringBuffer buf = new StringBuffer(); |
|
43 if (operand2.isRegister()) { |
|
44 buf.append(operand2.toString()); |
|
45 } else { |
|
46 Number number = ((Immediate)operand2).getNumber(); |
|
47 int value = number.intValue(); |
|
48 if (value < 0) { |
|
49 buf.append("-0x"); |
|
50 value = -value; |
|
51 } else { |
|
52 buf.append("0x"); |
|
53 } |
|
54 |
|
55 buf.append(Integer.toHexString(value)); |
|
56 } |
|
57 return buf.toString(); |
|
58 } |
|
59 |
|
60 protected String getDescription() { |
|
61 return (trivial) ? getName() : super.getDescription(); |
|
62 } |
|
63 } |
|