Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/JavaCallWrapper.java @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
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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) 2000, 2005, 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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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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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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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.runtime; | |
| 26 | |
| 27 import java.util.*; | |
| 28 import sun.jvm.hotspot.debugger.*; | |
| 29 import sun.jvm.hotspot.types.*; | |
| 30 | |
| 31 /** <P> A JavaCallWrapper is constructed before each JavaCall and | |
| 32 destroyed after the call. Its purpose is to allocate/deallocate a | |
| 33 new handle block and to save/restore the last Java fp/sp. A | |
| 34 pointer to the JavaCallWrapper is stored on the stack. </P> | |
| 35 | |
| 36 <P> NOTE: this port is very minimal and is only designed to get | |
| 37 frame traversal working. FIXME: we will have to add platform- | |
| 38 specific stuff later and therefore a factory for these | |
| 39 objects. </P> */ | |
| 40 | |
| 41 public class JavaCallWrapper extends VMObject { | |
| 42 protected static AddressField anchorField; | |
| 43 private static AddressField lastJavaSPField; | |
| 44 private static AddressField lastJavaPCField; | |
| 45 | |
| 46 static { | |
| 47 VM.registerVMInitializedObserver(new Observer() { | |
| 48 public void update(Observable o, Object data) { | |
| 49 initialize(VM.getVM().getTypeDataBase()); | |
| 50 } | |
| 51 }); | |
| 52 } | |
| 53 | |
| 54 private static synchronized void initialize(TypeDataBase db) { | |
| 55 Type type = db.lookupType("JavaCallWrapper"); | |
| 56 Type anchorType = db.lookupType("JavaFrameAnchor"); | |
| 57 | |
| 58 anchorField = type.getAddressField("_anchor"); | |
| 59 lastJavaSPField = anchorType.getAddressField("_last_Java_sp"); | |
| 60 lastJavaPCField = anchorType.getAddressField("_last_Java_pc"); | |
| 61 } | |
| 62 | |
| 63 public JavaCallWrapper(Address addr) { | |
| 64 super(addr); | |
| 65 } | |
| 66 | |
| 67 public Address getLastJavaSP() { | |
| 68 return lastJavaSPField.getValue(addr.addOffsetTo(anchorField.getOffset())); | |
| 69 } | |
| 70 | |
| 71 public Address getLastJavaPC() { | |
| 72 return lastJavaPCField.getValue(addr.addOffsetTo(anchorField.getOffset())); | |
| 73 } | |
| 74 | |
| 75 } |