Mercurial > hg > graal-jvmci-8
comparison agent/src/share/classes/sun/jvm/hotspot/runtime/StubRoutines.java @ 2245:638119ce7cfd
7009309: JSR 292: compiler/6991596/Test6991596.java crashes on fastdebug JDK7/b122
Reviewed-by: kvn, never
author | twisti |
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date | Tue, 01 Feb 2011 03:38:44 -0800 |
parents | c18cbe5936b8 |
children |
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2244:4f26f535a225 | 2245:638119ce7cfd |
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1 /* | 1 /* |
2 * Copyright (c) 2000, 2009, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | 4 * |
5 * This code is free software; you can redistribute it and/or modify it | 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 | 6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
29 import sun.jvm.hotspot.types.*; | 29 import sun.jvm.hotspot.types.*; |
30 | 30 |
31 /** Very minimal port for now to get frames working */ | 31 /** Very minimal port for now to get frames working */ |
32 | 32 |
33 public class StubRoutines { | 33 public class StubRoutines { |
34 private static AddressField callStubReturnAddressField; | 34 private static AddressField callStubReturnAddressField; |
35 private static AddressField callStubCompiledReturnAddressField; | |
36 | 35 |
37 static { | 36 static { |
38 VM.registerVMInitializedObserver(new Observer() { | 37 VM.registerVMInitializedObserver(new Observer() { |
39 public void update(Observable o, Object data) { | 38 public void update(Observable o, Object data) { |
40 initialize(VM.getVM().getTypeDataBase()); | 39 initialize(VM.getVM().getTypeDataBase()); |
42 }); | 41 }); |
43 } | 42 } |
44 | 43 |
45 private static synchronized void initialize(TypeDataBase db) { | 44 private static synchronized void initialize(TypeDataBase db) { |
46 Type type = db.lookupType("StubRoutines"); | 45 Type type = db.lookupType("StubRoutines"); |
47 | |
48 callStubReturnAddressField = type.getAddressField("_call_stub_return_address"); | 46 callStubReturnAddressField = type.getAddressField("_call_stub_return_address"); |
49 // Only some platforms have specific return from compiled to call_stub | |
50 try { | |
51 type = db.lookupType("StubRoutines::x86"); | |
52 if (type != null) { | |
53 callStubCompiledReturnAddressField = type.getAddressField("_call_stub_compiled_return"); | |
54 } | |
55 } catch (RuntimeException re) { | |
56 callStubCompiledReturnAddressField = null; | |
57 } | |
58 if (callStubCompiledReturnAddressField == null && VM.getVM().getCPU().equals("x86")) { | |
59 throw new InternalError("Missing definition for _call_stub_compiled_return"); | |
60 } | |
61 } | 47 } |
62 | 48 |
63 public StubRoutines() { | 49 public StubRoutines() { |
64 } | 50 } |
65 | 51 |
66 public boolean returnsToCallStub(Address returnPC) { | 52 public boolean returnsToCallStub(Address returnPC) { |
67 Address addr = callStubReturnAddressField.getValue(); | 53 Address addr = callStubReturnAddressField.getValue(); |
68 boolean result = false; | |
69 if (addr == null) { | |
70 result = (addr == returnPC); | |
71 } else { | |
72 result = addr.equals(returnPC); | |
73 } | |
74 if (result || callStubCompiledReturnAddressField == null ) return result; | |
75 // Could be a return to compiled code return point | |
76 addr = callStubCompiledReturnAddressField.getValue(); | |
77 if (addr == null) { | 54 if (addr == null) { |
78 return (addr == returnPC); | 55 return (addr == returnPC); |
79 } else { | 56 } else { |
80 return (addr.equals(returnPC)); | 57 return (addr.equals(returnPC)); |
81 } | 58 } |
82 | |
83 } | 59 } |
84 } | 60 } |