Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9RegisterBranchDecoder.java @ 3972:4f93f0d00802
7059019: G1: add G1 support to the SA
Summary: Extend the SA to recognize the G1CollectedHeap and implement any code that's needed by our serviceability tools (jmap, jinfo, jstack, etc.) that depend on the SA.
Reviewed-by: never, poonam, johnc
author | tonyp |
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date | Tue, 20 Sep 2011 09:59:59 -0400 |
parents | c18cbe5936b8 |
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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). | |
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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 abstract class V9RegisterBranchDecoder extends V9BranchDecoder { | |
30 static int getDisp16(int instruction) { | |
31 int offset = (DISP_16_LO_MASK & instruction) | | |
32 ((DISP_16_HI_MASK & instruction) >>> (DISP_16_HI_START_BIT - DISP_16_LO_NUMBITS)); | |
33 | |
34 // sign extend and word align | |
35 offset = extractSignedIntFromNBits(offset, 16); | |
36 offset <<= 2; | |
37 | |
38 return offset; | |
39 } | |
40 | |
41 String getConditionName(int conditionCode, boolean isAnnuled) { | |
42 return null; | |
43 } | |
44 | |
45 abstract String getRegisterConditionName(int rcond); | |
46 | |
47 public Instruction decode(int instruction, SPARCInstructionFactory factory) { | |
48 SPARCV9InstructionFactory v9factory = (SPARCV9InstructionFactory) factory; | |
49 int rcond = (BRANCH_RCOND_MASK & instruction) >>> BRANCH_RCOND_START_BIT; | |
50 if (rcond == BRANCH_RCOND_RESERVED1 || rcond == BRANCH_RCOND_RESERVED2) | |
51 return factory.newIllegalInstruction(instruction); | |
52 | |
53 SPARCRegister rs1 = SPARCRegisters.getRegister(getSourceRegister1(instruction)); | |
54 boolean predictTaken = getPredictTaken(instruction); | |
55 boolean annuled = getAnnuledBit(instruction); | |
56 PCRelativeAddress addr = new PCRelativeAddress(getDisp16(instruction)); | |
57 String name = getRegisterConditionName(rcond); | |
58 return v9factory.newV9RegisterBranchInstruction(name, addr, annuled, rcond, rs1, predictTaken); | |
59 } | |
60 } |