Mercurial > hg > truffle

annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/InlineDataDecoder.java @ 4142:bc8527f3071c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Adjust code base to new level of warnings.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sun, 18 Dec 2011 05:24:06 +0100
parents e233f5660da4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
1 /*
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
2 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
4 *
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
7 * published by the Free Software Foundation.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
8 *
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
13 * accompanied this code).
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
14 *
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
18 *
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
21 * questions.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
22 */
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
23 package com.sun.max.asm;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
24
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
25 import java.io.*;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
26 import java.util.*;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
27
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
28 import com.sun.max.asm.InlineDataDescriptor.*;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
29 import com.sun.max.io.*;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
30 import com.sun.max.program.*;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
31
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
32 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
33 * A decoder for a sequence of {@linkplain InlineDataDescriptor inline data descriptors} associated with an
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
34 * instruction stream. The decoder is initialized either from an encoded or inflated sequence of descriptors.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
35 *
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
36 * Once initialized, a inline data decoder can be {@linkplain #decode(int, BufferedInputStream) queried} for the
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
37 * inline data descriptor describing the inline data at a given position in an instruction stream.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
38 */
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
39 public class InlineDataDecoder {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
40
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
41 protected final Map<Integer, InlineDataDescriptor> positionToDescriptorMap;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
42
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
43 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
44 * Creates a decoder from an encoded sequence of inline data descriptors.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
45 *
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
46 * @param encodedDescriptors a sequence of descriptors encoded in a byte array whose format complies with that used
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
47 * by {@link InlineDataRecorder#encodedDescriptors()}. This value can be null.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
48 * @return null if {@code encodedDescriptors} is null
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
49 */
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
50 public static InlineDataDecoder createFrom(byte[] encodedDescriptors) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
51 if (encodedDescriptors != null) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
52 return new InlineDataDecoder(encodedDescriptors);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
53 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
54 return null;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
55 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
56
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
57 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
58 * Creates a decoder based on the descriptors in a given recorder.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
59 *
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
60 * @param inlineDataRecorder
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
61 * @return null if {@code inlineDataRecorder} does not contain any entries
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
62 */
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
63 public static InlineDataDecoder createFrom(InlineDataRecorder inlineDataRecorder) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
64 final List<InlineDataDescriptor> descriptors = inlineDataRecorder.descriptors();
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
65 if (descriptors != null) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
66 return new InlineDataDecoder(descriptors);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
67 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
68 return null;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
69 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
70
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
71 public InlineDataDecoder(List<InlineDataDescriptor> descriptors) {
4142
bc8527f3071c Adjust code base to new level of warnings.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 3733
diff changeset
72 positionToDescriptorMap = new TreeMap<>();
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
73 for (InlineDataDescriptor descriptor : descriptors) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
74 positionToDescriptorMap.put(descriptor.startPosition(), descriptor);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
75 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
76 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
77
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
78 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
79 * Creates a decoder from an encoded sequence of inline data descriptors.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
80 *
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
81 * @param encodedDescriptors a sequence of descriptors encoded in a byte array whose format complies with that used
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
82 * by {@link InlineDataRecorder#encodedDescriptors()}
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
83 */
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
84 public InlineDataDecoder(byte[] encodedDescriptors) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
85 try {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
86 final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(encodedDescriptors);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
87 final DataInputStream dataInputStream = new DataInputStream(byteArrayInputStream);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
88 final int numberOfEntries = dataInputStream.readInt();
4142
bc8527f3071c Adjust code base to new level of warnings.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 3733
diff changeset
89 positionToDescriptorMap = new TreeMap<>();
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
90 for (int i = 0; i < numberOfEntries; ++i) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
91 final Tag tag = InlineDataDescriptor.Tag.VALUES.get(dataInputStream.readByte());
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
92 final InlineDataDescriptor inlineDataDescriptor = tag.decode(dataInputStream);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
93 positionToDescriptorMap.put(inlineDataDescriptor.startPosition(), inlineDataDescriptor);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
94 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
95 assert byteArrayInputStream.available() == 0;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
96 } catch (IOException ioException) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
97 throw ProgramError.unexpected(ioException);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
98 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
99 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
100
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
101 /**
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
102 * Decodes the data (if any) from the current read position of a given stream.
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
103 *
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
104 * @param currentPosition the stream's current read position with respect to the start of the stream
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
105 * @param stream the instruction stream being disassembled
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
106 * @return the inline data decoded from the stream or null if there is no inline data at {@code currentPosition}
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
107 */
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
108 public InlineData decode(int currentPosition, BufferedInputStream stream) throws IOException {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
109 final InlineDataDescriptor inlineDataDescriptor = positionToDescriptorMap.get(currentPosition);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
110 if (inlineDataDescriptor != null) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
111 final int size = inlineDataDescriptor.size();
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
112 final byte[] data = new byte[size];
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
113 Streams.readFully(stream, data);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
114 return new InlineData(inlineDataDescriptor, data);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
115 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
116 return null;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
117 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
118 }