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comparison agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9MOVrDecoder.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 /*
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 class V9MOVrDecoder extends V9CMoveDecoder {
30 private static final String regConditionNames[] = {
31 null, "movrz", "movrlez", "movrlz", null, "movrnz", "movrgz", "movrgez"
32 };
33
34 private static String getMOVrName(int conditionCode) {
35 return regConditionNames[conditionCode];
36 }
37
38 Instruction decode(int instruction, SPARCInstructionFactory factory) {
39 SPARCV9InstructionFactory v9factory = (SPARCV9InstructionFactory) factory;
40 Instruction instr = null;
41 int regConditionCode = getRegisterConditionCode(instruction);
42 String name = getMOVrName(regConditionCode);
43 if (name == null) {
44 instr = v9factory.newIllegalInstruction(instruction);
45 } else {
46 int rdNum = getDestinationRegister(instruction);
47 SPARCRegister rd = SPARCRegisters.getRegister(rdNum);
48 SPARCRegister rs1 = SPARCRegisters.getRegister(getSourceRegister1(instruction));
49 ImmediateOrRegister operand2 = getCMoveSource(instruction, 10);
50 instr = v9factory.newV9MOVrInstruction(name, rs1, operand2, rd, regConditionCode);
51 }
52
53 return instr;
54 }
55 }