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comparison agent/src/share/classes/sun/jvm/hotspot/asm/sparc/SPARCSaveInstruction.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2002 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any 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 }