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comparison graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/jvmci/HotSpotCompiledCode.java @ 21526:1da7aef31a08

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created com.oracle.graal.hotspot.jvmci package and moved classes destined for future JVMCI module into it (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Tue, 19 May 2015 23:16:07 +0200
parents graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotCompiledCode.java@082417ac43e4
children
comparison
equal deleted inserted replaced
21489:b3f1d8b23037 21526:1da7aef31a08
1 /*
2 * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.oracle.graal.hotspot.jvmci;
24
25 import java.nio.*;
26 import java.util.*;
27 import java.util.stream.*;
28 import java.util.stream.Stream.Builder;
29
30 import com.oracle.graal.api.code.*;
31 import com.oracle.graal.api.code.CompilationResult.CodeAnnotation;
32 import com.oracle.graal.api.code.CompilationResult.CodeComment;
33 import com.oracle.graal.api.code.CompilationResult.DataPatch;
34 import com.oracle.graal.api.code.CompilationResult.ExceptionHandler;
35 import com.oracle.graal.api.code.CompilationResult.Infopoint;
36 import com.oracle.graal.api.code.CompilationResult.JumpTable;
37 import com.oracle.graal.api.code.CompilationResult.Mark;
38 import com.oracle.graal.api.code.CompilationResult.Site;
39
40 /**
41 * A {@link CompilationResult} with additional HotSpot-specific information required for installing
42 * the code in HotSpot's code cache.
43 */
44 public abstract class HotSpotCompiledCode {
45
46 public final CompilationResult comp;
47
48 public final Site[] sites;
49 public final ExceptionHandler[] exceptionHandlers;
50 public final Comment[] comments;
51
52 public final byte[] dataSection;
53 public final int dataSectionAlignment;
54 public final DataPatch[] dataSectionPatches;
55
56 public static class Comment {
57
58 public final String text;
59 public final int pcOffset;
60
61 public Comment(int pcOffset, String text) {
62 this.text = text;
63 this.pcOffset = pcOffset;
64 }
65 }
66
67 public HotSpotCompiledCode(CompilationResult compResult) {
68 this.comp = compResult;
69 sites = getSortedSites(compResult);
70 if (compResult.getExceptionHandlers().isEmpty()) {
71 exceptionHandlers = null;
72 } else {
73 exceptionHandlers = compResult.getExceptionHandlers().toArray(new ExceptionHandler[compResult.getExceptionHandlers().size()]);
74 }
75 List<CodeAnnotation> annotations = compResult.getAnnotations();
76 comments = new Comment[annotations.size()];
77 if (!annotations.isEmpty()) {
78 for (int i = 0; i < comments.length; i++) {
79 CodeAnnotation annotation = annotations.get(i);
80 String text;
81 if (annotation instanceof CodeComment) {
82 CodeComment codeComment = (CodeComment) annotation;
83 text = codeComment.value;
84 } else if (annotation instanceof JumpTable) {
85 JumpTable jumpTable = (JumpTable) annotation;
86 text = "JumpTable [" + jumpTable.low + " .. " + jumpTable.high + "]";
87 } else {
88 text = annotation.toString();
89 }
90 comments[i] = new Comment(annotation.position, text);
91 }
92 }
93 assert validateFrames();
94
95 DataSection data = compResult.getDataSection();
96 data.finalizeLayout();
97 dataSection = new byte[data.getSectionSize()];
98
99 ByteBuffer buffer = ByteBuffer.wrap(dataSection).order(ByteOrder.nativeOrder());
100 Builder<DataPatch> patchBuilder = Stream.builder();
101 data.buildDataSection(buffer, patchBuilder);
102
103 dataSectionAlignment = data.getSectionAlignment();
104 dataSectionPatches = patchBuilder.build().toArray(len -> new DataPatch[len]);
105 }
106
107 /**
108 * Ensure that all the frames passed into HotSpot are properly formatted with an empty or
109 * illegal slot following double word slots.
110 */
111 private boolean validateFrames() {
112 for (Site site : sites) {
113 if (site instanceof Infopoint) {
114 Infopoint info = (Infopoint) site;
115 if (info.debugInfo != null) {
116 BytecodeFrame frame = info.debugInfo.frame();
117 assert frame == null || frame.validateFormat(false);
118 }
119 }
120 }
121 return true;
122 }
123
124 static class SiteComparator implements Comparator<Site> {
125
126 public int compare(Site s1, Site s2) {
127 if (s1.pcOffset == s2.pcOffset && (s1 instanceof Mark ^ s2 instanceof Mark)) {
128 return s1 instanceof Mark ? -1 : 1;
129 }
130 return s1.pcOffset - s2.pcOffset;
131 }
132 }
133
134 private static Site[] getSortedSites(CompilationResult target) {
135 List<?>[] lists = new List<?>[]{target.getInfopoints(), target.getDataPatches(), target.getMarks()};
136 int count = 0;
137 for (List<?> list : lists) {
138 count += list.size();
139 }
140 Site[] result = new Site[count];
141 int pos = 0;
142 for (List<?> list : lists) {
143 for (Object elem : list) {
144 result[pos++] = (Site) elem;
145 }
146 }
147 Arrays.sort(result, new SiteComparator());
148 return result;
149 }
150 }