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comparison agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9WrprDecoder.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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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 V9WrprDecoder extends V9PrivilegedReadWriteDecoder {
30 Instruction decode(int instruction, SPARCInstructionFactory factory) {
31 SPARCV9InstructionFactory v9factory = (SPARCV9InstructionFactory) factory;
32 Instruction instr = null;
33 int prNum = getDestinationRegister(instruction);
34 if (isLegalPrivilegedRegister(prNum)) {
35 SPARCRegister rs1 = SPARCRegisters.getRegister(getSourceRegister1(instruction));
36 ImmediateOrRegister operand2 = getOperand2(instruction);
37 instr = v9factory.newV9WrprInstruction(rs1, operand2, prNum);
38 } else {
39 instr = v9factory.newIllegalInstruction(instruction);
40 }
41
42 return instr;
43 }
44 }