Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9ShiftDecoder.java @ 2177:3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank
author | coleenp |
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date | Thu, 27 Jan 2011 16:11:27 -0800 |
parents | c18cbe5936b8 |
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rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.asm.sparc; | |
26 | |
27 import sun.jvm.hotspot.asm.*; | |
28 | |
29 class V9ShiftDecoder extends InstructionDecoder | |
30 implements V9InstructionDecoder { | |
31 final int op3; | |
32 final String name; | |
33 final int rtlOperation; | |
34 | |
35 V9ShiftDecoder(int op3, String name, int rtlOperation) { | |
36 this.op3 = op3; | |
37 this.name = name; | |
38 this.rtlOperation = rtlOperation; | |
39 } | |
40 | |
41 static boolean isXBitSet(int instruction) { | |
42 return (instruction & X_MASK) != 0; | |
43 } | |
44 | |
45 Instruction decode(int instruction, | |
46 SPARCInstructionFactory factory) { | |
47 SPARCRegister rs1 = SPARCRegisters.getRegister(getSourceRegister1(instruction)); | |
48 SPARCRegister rd = SPARCRegisters.getRegister(getDestinationRegister(instruction)); | |
49 boolean xBit = isXBitSet(instruction); | |
50 ImmediateOrRegister operand2 = null; | |
51 | |
52 if (isIBitSet(instruction)) { | |
53 // look for 64 bits shift operations. | |
54 int value = instruction & ( xBit ? SHIFT_COUNT_6_MASK : SHIFT_COUNT_5_MASK); | |
55 operand2 = new Immediate(new Short((short) value)); | |
56 } else { | |
57 operand2 = SPARCRegisters.getRegister(getSourceRegister2(instruction)); | |
58 } | |
59 | |
60 return factory.newShiftInstruction(xBit? name + "x" : name, op3, rtlOperation, rs1, operand2, rd); | |
61 } | |
62 } |