Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/code/CodeBlob.java @ 14909:4ca6dc0799b6
Backout jdk9 merge
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Tue, 01 Apr 2014 13:57:07 +0200 |
parents | 5a98bf7d847b |
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rev | line source |
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0 | 1 /* |
6782 | 2 * Copyright (c) 2000, 2012, 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 |
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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.code; | |
26 | |
27 import java.io.*; | |
28 import java.util.*; | |
29 | |
30 import sun.jvm.hotspot.compiler.*; | |
31 import sun.jvm.hotspot.debugger.*; | |
32 import sun.jvm.hotspot.runtime.*; | |
33 import sun.jvm.hotspot.types.*; | |
34 import sun.jvm.hotspot.utilities.*; | |
35 | |
36 public class CodeBlob extends VMObject { | |
37 private static AddressField nameField; | |
38 private static CIntegerField sizeField; | |
39 private static CIntegerField headerSizeField; | |
40 private static CIntegerField relocationSizeField; | |
1748 | 41 private static CIntegerField contentOffsetField; |
42 private static CIntegerField codeOffsetField; | |
0 | 43 private static CIntegerField frameCompleteOffsetField; |
44 private static CIntegerField dataOffsetField; | |
45 private static CIntegerField frameSizeField; | |
46 private static AddressField oopMapsField; | |
47 | |
48 // Only used by server compiler on x86; computed over in SA rather | |
49 // than relying on computation in target VM | |
50 private static final int NOT_YET_COMPUTED = -2; | |
51 private static final int UNDEFINED = -1; | |
52 private int linkOffset = NOT_YET_COMPUTED; | |
53 private static int matcherInterpreterFramePointerReg; | |
54 | |
55 static { | |
56 VM.registerVMInitializedObserver(new Observer() { | |
57 public void update(Observable o, Object data) { | |
58 initialize(VM.getVM().getTypeDataBase()); | |
59 } | |
60 }); | |
61 } | |
62 | |
63 private static void initialize(TypeDataBase db) { | |
64 Type type = db.lookupType("CodeBlob"); | |
65 | |
66 nameField = type.getAddressField("_name"); | |
67 sizeField = type.getCIntegerField("_size"); | |
68 headerSizeField = type.getCIntegerField("_header_size"); | |
69 relocationSizeField = type.getCIntegerField("_relocation_size"); | |
70 frameCompleteOffsetField = type.getCIntegerField("_frame_complete_offset"); | |
1748 | 71 contentOffsetField = type.getCIntegerField("_content_offset"); |
72 codeOffsetField = type.getCIntegerField("_code_offset"); | |
0 | 73 dataOffsetField = type.getCIntegerField("_data_offset"); |
74 frameSizeField = type.getCIntegerField("_frame_size"); | |
75 oopMapsField = type.getAddressField("_oop_maps"); | |
76 | |
77 if (VM.getVM().isServerCompiler()) { | |
78 matcherInterpreterFramePointerReg = | |
79 db.lookupIntConstant("Matcher::interpreter_frame_pointer_reg").intValue(); | |
80 } | |
81 } | |
82 | |
83 public CodeBlob(Address addr) { | |
84 super(addr); | |
85 } | |
86 | |
87 // Typing | |
88 public boolean isBufferBlob() { return false; } | |
89 public boolean isNMethod() { return false; } | |
90 public boolean isRuntimeStub() { return false; } | |
91 public boolean isDeoptimizationStub() { return false; } | |
92 public boolean isUncommonTrapStub() { return false; } | |
93 public boolean isExceptionStub() { return false; } | |
94 public boolean isSafepointStub() { return false; } | |
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95 public boolean isAdapterBlob() { return false; } |
0 | 96 |
97 // Fine grain nmethod support: isNmethod() == isJavaMethod() || isNativeMethod() || isOSRMethod() | |
98 public boolean isJavaMethod() { return false; } | |
99 public boolean isNativeMethod() { return false; } | |
100 /** On-Stack Replacement method */ | |
101 public boolean isOSRMethod() { return false; } | |
102 | |
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103 public NMethod asNMethodOrNull() { |
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104 if (isNMethod()) return (NMethod)this; |
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105 return null; |
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106 } |
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107 |
0 | 108 // Boundaries |
109 public Address headerBegin() { | |
110 return addr; | |
111 } | |
112 | |
113 public Address headerEnd() { | |
114 return addr.addOffsetTo(headerSizeField.getValue(addr)); | |
115 } | |
116 | |
117 // FIXME: add RelocInfo | |
118 // public RelocInfo relocationBegin(); | |
119 // public RelocInfo relocationEnd(); | |
120 | |
1748 | 121 public Address contentBegin() { |
122 return headerBegin().addOffsetTo(contentOffsetField.getValue(addr)); | |
0 | 123 } |
124 | |
1748 | 125 public Address contentEnd() { |
126 return headerBegin().addOffsetTo(dataOffsetField.getValue(addr)); | |
127 } | |
128 | |
129 public Address codeBegin() { | |
130 return headerBegin().addOffsetTo(contentOffsetField.getValue(addr)); | |
131 } | |
132 | |
133 public Address codeEnd() { | |
0 | 134 return headerBegin().addOffsetTo(dataOffsetField.getValue(addr)); |
135 } | |
136 | |
137 public Address dataBegin() { | |
138 return headerBegin().addOffsetTo(dataOffsetField.getValue(addr)); | |
139 } | |
140 | |
141 public Address dataEnd() { | |
142 return headerBegin().addOffsetTo(sizeField.getValue(addr)); | |
143 } | |
144 | |
145 // Offsets | |
1748 | 146 public int getRelocationOffset() { return (int) headerSizeField .getValue(addr); } |
147 public int getContentOffset() { return (int) contentOffsetField.getValue(addr); } | |
148 public int getCodeOffset() { return (int) codeOffsetField .getValue(addr); } | |
149 public int getDataOffset() { return (int) dataOffsetField .getValue(addr); } | |
0 | 150 |
151 // Sizes | |
1748 | 152 public int getSize() { return (int) sizeField .getValue(addr); } |
153 public int getHeaderSize() { return (int) headerSizeField.getValue(addr); } | |
0 | 154 // FIXME: add getRelocationSize() |
1748 | 155 public int getContentSize() { return (int) contentEnd().minus(contentBegin()); } |
156 public int getCodeSize() { return (int) codeEnd() .minus(codeBegin()); } | |
157 public int getDataSize() { return (int) dataEnd() .minus(dataBegin()); } | |
0 | 158 |
159 // Containment | |
1748 | 160 public boolean blobContains(Address addr) { return headerBegin() .lessThanOrEqual(addr) && dataEnd() .greaterThan(addr); } |
0 | 161 // FIXME: add relocationContains |
1748 | 162 public boolean contentContains(Address addr) { return contentBegin().lessThanOrEqual(addr) && contentEnd().greaterThan(addr); } |
163 public boolean codeContains(Address addr) { return codeBegin() .lessThanOrEqual(addr) && codeEnd() .greaterThan(addr); } | |
164 public boolean dataContains(Address addr) { return dataBegin() .lessThanOrEqual(addr) && dataEnd() .greaterThan(addr); } | |
165 public boolean contains(Address addr) { return contentContains(addr); } | |
166 public boolean isFrameCompleteAt(Address a) { return codeContains(a) && a.minus(codeBegin()) >= frameCompleteOffsetField.getValue(addr); } | |
0 | 167 |
168 // Reclamation support (really only used by the nmethods, but in order to get asserts to work | |
169 // in the CodeCache they are defined virtual here) | |
170 public boolean isZombie() { return false; } | |
171 public boolean isLockedByVM() { return false; } | |
172 | |
173 /** OopMap for frame; can return null if none available */ | |
174 public OopMapSet getOopMaps() { | |
175 Address oopMapsAddr = oopMapsField.getValue(addr); | |
176 if (oopMapsAddr == null) { | |
177 return null; | |
178 } | |
179 return new OopMapSet(oopMapsAddr); | |
180 } | |
181 // FIXME: not yet implementable | |
182 // void set_oop_maps(OopMapSet* p); | |
183 | |
184 public OopMap getOopMapForReturnAddress(Address returnAddress, boolean debugging) { | |
185 Address pc = returnAddress; | |
186 if (Assert.ASSERTS_ENABLED) { | |
187 Assert.that(getOopMaps() != null, "nope"); | |
188 } | |
1748 | 189 return getOopMaps().findMapAtOffset(pc.minus(codeBegin()), debugging); |
0 | 190 } |
191 | |
192 // virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, void f(oop*)) { ShouldNotReachHere(); } | |
193 // FIXME; | |
194 | |
195 /** NOTE: this returns a size in BYTES in this system! */ | |
196 public long getFrameSize() { | |
197 return VM.getVM().getAddressSize() * frameSizeField.getValue(addr); | |
198 } | |
199 | |
200 // Returns true, if the next frame is responsible for GC'ing oops passed as arguments | |
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201 public boolean callerMustGCArguments() { return false; } |
0 | 202 |
203 public String getName() { | |
204 return CStringUtilities.getString(nameField.getValue(addr)); | |
205 } | |
206 | |
207 // FIXME: NOT FINISHED | |
208 | |
209 // FIXME: add more accessors | |
210 | |
211 public void print() { | |
212 printOn(System.out); | |
213 } | |
214 | |
215 public void printOn(PrintStream tty) { | |
216 tty.print(getName()); | |
217 printComponentsOn(tty); | |
218 } | |
219 | |
220 protected void printComponentsOn(PrintStream tty) { | |
1748 | 221 tty.println(" content: [" + contentBegin() + ", " + contentEnd() + "), " + |
222 " code: [" + codeBegin() + ", " + codeEnd() + "), " + | |
0 | 223 " data: [" + dataBegin() + ", " + dataEnd() + "), " + |
224 " frame size: " + getFrameSize()); | |
225 } | |
226 } |