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annotate agent/src/share/classes/sun/jvm/hotspot/runtime/sparc/SPARCRicochetFrame.java @ 3908:7588156f5cf9
7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
Reviewed-by: kvn
author | never |
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date | Mon, 05 Sep 2011 17:09:05 -0700 |
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1 /* |
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2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 package sun.jvm.hotspot.runtime.sparc; |
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26 |
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27 import java.util.*; |
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28 import sun.jvm.hotspot.asm.sparc.SPARCRegister; |
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29 import sun.jvm.hotspot.asm.sparc.SPARCRegisters; |
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30 import sun.jvm.hotspot.debugger.*; |
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31 import sun.jvm.hotspot.runtime.*; |
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32 import sun.jvm.hotspot.types.*; |
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33 |
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34 public class SPARCRicochetFrame { |
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35 static { |
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36 VM.registerVMInitializedObserver(new Observer() { |
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37 public void update(Observable o, Object data) { |
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38 initialize(VM.getVM().getTypeDataBase()); |
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39 } |
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40 }); |
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41 } |
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42 |
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43 private SPARCFrame frame; |
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44 |
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45 private static void initialize(TypeDataBase db) { |
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46 // Type type = db.lookupType("MethodHandles::RicochetFrame"); |
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47 |
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48 } |
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49 |
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50 static SPARCRicochetFrame fromFrame(SPARCFrame f) { |
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51 return new SPARCRicochetFrame(f); |
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52 } |
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53 |
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54 private SPARCRicochetFrame(SPARCFrame f) { |
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55 frame = f; |
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56 } |
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57 |
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58 private Address registerValue(SPARCRegister reg) { |
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59 return frame.getSP().addOffsetTo(reg.spOffsetInSavedWindow()).getAddressAt(0); |
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60 } |
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61 |
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62 public Address savedArgsBase() { |
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63 return registerValue(SPARCRegisters.L4); |
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64 } |
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65 public Address exactSenderSP() { |
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66 return registerValue(SPARCRegisters.I5); |
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67 } |
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68 public Address senderLink() { |
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69 return frame.getSenderSP(); |
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70 } |
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71 public Address senderPC() { |
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72 return frame.getSenderPC(); |
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73 } |
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74 public Address extendedSenderSP() { |
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75 return savedArgsBase(); |
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76 } |
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77 } |