author | erikj |
Tue, 12 Sep 2017 19:03:39 +0200 | |
changeset 47216 | 71c04702a3d5 |
parent 35217 | hotspot/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/tools/jcore/ClassWriter.java@ce4b5303a813 |
child 48826 | c4d9d1b08e2e |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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package sun.jvm.hotspot.tools.jcore; |
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import java.io.*; |
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import java.util.*; |
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import sun.jvm.hotspot.oops.*; |
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import sun.jvm.hotspot.runtime.*; |
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import sun.jvm.hotspot.utilities.*; |
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public class ClassWriter implements /* imports */ ClassConstants |
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{ |
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public static final boolean DEBUG = false; |
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protected void debugMessage(String message) { |
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System.out.println(message); |
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} |
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protected InstanceKlass klass; |
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protected DataOutputStream dos; |
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protected ConstantPool cpool; |
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// Map between class name to index of type CONSTANT_Class |
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protected Map<String, Short> classToIndex = new HashMap<String, Short>(); |
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// Map between any modified UTF-8 and it's constant pool index. |
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protected Map<String, Short> utf8ToIndex = new HashMap<String, Short>(); |
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// constant pool index for attribute names. |
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protected short _sourceFileIndex; |
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protected short _innerClassesIndex; |
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protected short _syntheticIndex; |
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protected short _deprecatedIndex; |
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protected short _constantValueIndex; |
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protected short _codeIndex; |
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protected short _exceptionsIndex; |
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protected short _lineNumberTableIndex; |
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protected short _localVariableTableIndex; |
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protected short _signatureIndex; |
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protected static int extractHighShortFromInt(int val) { |
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// must stay in sync with ConstantPool::name_and_type_at_put, method_at_put, etc. |
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return (val >> 16) & 0xFFFF; |
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} |
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protected static int extractLowShortFromInt(int val) { |
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// must stay in sync with ConstantPool::name_and_type_at_put, method_at_put, etc. |
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return val & 0xFFFF; |
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} |
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public ClassWriter(InstanceKlass kls, OutputStream os) { |
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klass = kls; |
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dos = new DataOutputStream(os); |
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cpool = klass.getConstants(); |
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} |
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public void write() throws IOException { |
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if (DEBUG) debugMessage("class name = " + klass.getName().asString()); |
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// write magic |
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dos.writeInt(0xCAFEBABE); |
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writeVersion(); |
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writeConstantPool(); |
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writeClassAccessFlags(); |
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writeThisClass(); |
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writeSuperClass(); |
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writeInterfaces(); |
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writeFields(); |
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writeMethods(); |
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writeClassAttributes(); |
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// flush output |
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dos.flush(); |
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} |
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protected void writeVersion() throws IOException { |
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dos.writeShort((short)klass.minorVersion()); |
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dos.writeShort((short)klass.majorVersion()); |
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} |
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protected void writeIndex(int index) throws IOException { |
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if (index == 0) throw new InternalError(); |
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dos.writeShort(index); |
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} |
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protected void writeConstantPool() throws IOException { |
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final U1Array tags = cpool.getTags(); |
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final long len = tags.length(); |
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dos.writeShort((short) len); |
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if (DEBUG) debugMessage("constant pool length = " + len); |
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int ci = 0; // constant pool index |
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// collect all modified UTF-8 Strings from Constant Pool |
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for (ci = 1; ci < len; ci++) { |
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int cpConstType = tags.at(ci); |
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if(cpConstType == JVM_CONSTANT_Utf8) { |
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Symbol sym = cpool.getSymbolAt(ci); |
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utf8ToIndex.put(sym.asString(), new Short((short) ci)); |
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} |
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else if(cpConstType == JVM_CONSTANT_Long || |
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cpConstType == JVM_CONSTANT_Double) { |
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ci++; |
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} |
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} |
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// remember index of attribute name modified UTF-8 strings |
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// class attributes |
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Short sourceFileIndex = (Short) utf8ToIndex.get("SourceFile"); |
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_sourceFileIndex = (sourceFileIndex != null)? sourceFileIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("SourceFile index = " + _sourceFileIndex); |
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Short innerClassesIndex = (Short) utf8ToIndex.get("InnerClasses"); |
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_innerClassesIndex = (innerClassesIndex != null)? innerClassesIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("InnerClasses index = " + _innerClassesIndex); |
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// field attributes |
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Short constantValueIndex = (Short) utf8ToIndex.get("ConstantValue"); |
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_constantValueIndex = (constantValueIndex != null)? |
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constantValueIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("ConstantValue index = " + _constantValueIndex); |
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Short syntheticIndex = (Short) utf8ToIndex.get("Synthetic"); |
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_syntheticIndex = (syntheticIndex != null)? syntheticIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("Synthetic index = " + _syntheticIndex); |
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Short deprecatedIndex = (Short) utf8ToIndex.get("Deprecated"); |
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_deprecatedIndex = (deprecatedIndex != null)? deprecatedIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("Deprecated index = " + _deprecatedIndex); |
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// method attributes |
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Short codeIndex = (Short) utf8ToIndex.get("Code"); |
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_codeIndex = (codeIndex != null)? codeIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("Code index = " + _codeIndex); |
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Short exceptionsIndex = (Short) utf8ToIndex.get("Exceptions"); |
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_exceptionsIndex = (exceptionsIndex != null)? exceptionsIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("Exceptions index = " + _exceptionsIndex); |
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// Short syntheticIndex = (Short) utf8ToIndex.get("Synthetic"); |
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// Short deprecatedIndex = (Short) utf8ToIndex.get("Deprecated"); |
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// Code attributes |
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Short lineNumberTableIndex = (Short) utf8ToIndex.get("LineNumberTable"); |
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_lineNumberTableIndex = (lineNumberTableIndex != null)? |
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lineNumberTableIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("LineNumberTable index = " + _lineNumberTableIndex); |
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Short localVariableTableIndex = (Short) utf8ToIndex.get("LocalVariableTable"); |
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_localVariableTableIndex = (localVariableTableIndex != null)? |
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localVariableTableIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("LocalVariableTable index = " + _localVariableTableIndex); |
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Short signatureIdx = (Short) utf8ToIndex.get("Signature"); |
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_signatureIndex = (signatureIdx != null)? signatureIdx.shortValue() : 0; |
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if (DEBUG) debugMessage("Signature index = " + _signatureIndex); |
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for(ci = 1; ci < len; ci++) { |
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int cpConstType = tags.at(ci); |
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// write cp_info |
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// write constant type |
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switch(cpConstType) { |
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case JVM_CONSTANT_Utf8: { |
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dos.writeByte(cpConstType); |
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Symbol sym = cpool.getSymbolAt(ci); |
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dos.writeShort((short)sym.getLength()); |
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dos.write(sym.asByteArray()); |
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if (DEBUG) debugMessage("CP[" + ci + "] = modified UTF-8 " + sym.asString()); |
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break; |
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} |
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case JVM_CONSTANT_Unicode: |
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throw new IllegalArgumentException("Unicode constant!"); |
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case JVM_CONSTANT_Integer: |
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dos.writeByte(cpConstType); |
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dos.writeInt(cpool.getIntAt(ci)); |
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if (DEBUG) debugMessage("CP[" + ci + "] = int " + cpool.getIntAt(ci)); |
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break; |
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case JVM_CONSTANT_Float: |
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dos.writeByte(cpConstType); |
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dos.writeFloat(cpool.getFloatAt(ci)); |
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if (DEBUG) debugMessage("CP[" + ci + "] = float " + cpool.getFloatAt(ci)); |
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break; |
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case JVM_CONSTANT_Long: { |
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dos.writeByte(cpConstType); |
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long l = cpool.getLongAt(ci); |
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// long entries occupy two pool entries |
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ci++; |
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dos.writeLong(l); |
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break; |
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} |
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case JVM_CONSTANT_Double: |
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dos.writeByte(cpConstType); |
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dos.writeDouble(cpool.getDoubleAt(ci)); |
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// double entries occupy two pool entries |
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ci++; |
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break; |
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case JVM_CONSTANT_Class: |
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case JVM_CONSTANT_UnresolvedClass: |
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case JVM_CONSTANT_UnresolvedClassInError: { |
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dos.writeByte(JVM_CONSTANT_Class); |
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String klassName = cpool.getKlassNameAt(ci).asString(); |
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Short s = (Short) utf8ToIndex.get(klassName); |
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classToIndex.put(klassName, new Short((short)ci)); |
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dos.writeShort(s.shortValue()); |
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if (DEBUG) debugMessage("CP[" + ci + "] = class " + s); |
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break; |
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} |
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case JVM_CONSTANT_String: { |
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dos.writeByte(cpConstType); |
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String str = cpool.getUnresolvedStringAt(ci).asString(); |
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Short s = (Short) utf8ToIndex.get(str); |
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dos.writeShort(s.shortValue()); |
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if (DEBUG) debugMessage("CP[" + ci + "] = string " + s); |
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break; |
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} |
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// all external, internal method/field references |
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case JVM_CONSTANT_Fieldref: |
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case JVM_CONSTANT_Methodref: |
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case JVM_CONSTANT_InterfaceMethodref: { |
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dos.writeByte(cpConstType); |
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int value = cpool.getIntAt(ci); |
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short klassIndex = (short) extractLowShortFromInt(value); |
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short nameAndTypeIndex = (short) extractHighShortFromInt(value); |
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dos.writeShort(klassIndex); |
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dos.writeShort(nameAndTypeIndex); |
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if (DEBUG) debugMessage("CP[" + ci + "] = ref klass = " + |
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klassIndex + ", N&T = " + nameAndTypeIndex); |
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break; |
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} |
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265 |
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266 |
case JVM_CONSTANT_NameAndType: { |
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dos.writeByte(cpConstType); |
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int value = cpool.getIntAt(ci); |
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short nameIndex = (short) extractLowShortFromInt(value); |
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short signatureIndex = (short) extractHighShortFromInt(value); |
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dos.writeShort(nameIndex); |
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dos.writeShort(signatureIndex); |
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if (DEBUG) debugMessage("CP[" + ci + "] = N&T name = " + nameIndex |
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+ ", type = " + signatureIndex); |
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break; |
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276 |
} |
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case JVM_CONSTANT_MethodHandle: { |
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dos.writeByte(cpConstType); |
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280 |
int value = cpool.getIntAt(ci); |
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byte refKind = (byte) extractLowShortFromInt(value); |
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short memberIndex = (short) extractHighShortFromInt(value); |
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dos.writeByte(refKind); |
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dos.writeShort(memberIndex); |
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if (DEBUG) debugMessage("CP[" + ci + "] = MH kind = " + |
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286 |
refKind + ", mem = " + memberIndex); |
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break; |
288 |
} |
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289 |
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290 |
case JVM_CONSTANT_MethodType: { |
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291 |
dos.writeByte(cpConstType); |
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292 |
int value = cpool.getIntAt(ci); |
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293 |
short refIndex = (short) value; |
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294 |
dos.writeShort(refIndex); |
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295 |
if (DEBUG) debugMessage("CP[" + ci + "] = MT index = " + refIndex); |
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296 |
break; |
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297 |
} |
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case JVM_CONSTANT_InvokeDynamic: { |
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dos.writeByte(cpConstType); |
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int value = cpool.getIntAt(ci); |
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short bsmIndex = (short) extractLowShortFromInt(value); |
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short nameAndTypeIndex = (short) extractHighShortFromInt(value); |
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304 |
dos.writeShort(bsmIndex); |
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305 |
dos.writeShort(nameAndTypeIndex); |
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306 |
if (DEBUG) debugMessage("CP[" + ci + "] = INDY bsm = " + |
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307 |
bsmIndex + ", N&T = " + nameAndTypeIndex); |
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308 |
break; |
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309 |
} |
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5341 | 311 |
default: |
312 |
throw new InternalError("Unknown tag: " + cpConstType); |
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1 | 313 |
} // switch |
314 |
} |
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315 |
} |
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316 |
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317 |
protected void writeClassAccessFlags() throws IOException { |
|
318 |
int flags = (int)(klass.getAccessFlags() & JVM_RECOGNIZED_CLASS_MODIFIERS); |
|
319 |
dos.writeShort((short)flags); |
|
320 |
} |
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321 |
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322 |
protected void writeThisClass() throws IOException { |
|
323 |
String klassName = klass.getName().asString(); |
|
324 |
Short index = (Short) classToIndex.get(klassName); |
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325 |
dos.writeShort(index.shortValue()); |
|
326 |
if (DEBUG) debugMessage("this class = " + index); |
|
327 |
} |
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328 |
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329 |
protected void writeSuperClass() throws IOException { |
|
330 |
Klass superKlass = klass.getSuper(); |
|
331 |
if (superKlass != null) { // is not java.lang.Object |
|
332 |
String superName = superKlass.getName().asString(); |
|
333 |
Short index = (Short) classToIndex.get(superName); |
|
334 |
if (DEBUG) debugMessage("super class = " + index); |
|
335 |
dos.writeShort(index.shortValue()); |
|
336 |
} else { |
|
337 |
dos.writeShort(0); // no super class |
|
338 |
} |
|
339 |
} |
|
340 |
protected void writeInterfaces() throws IOException { |
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|
341 |
KlassArray interfaces = klass.getLocalInterfaces(); |
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|
342 |
final int len = interfaces.length(); |
1 | 343 |
|
344 |
if (DEBUG) debugMessage("number of interfaces = " + len); |
|
345 |
||
346 |
// write interfaces count |
|
347 |
dos.writeShort((short) len); |
|
348 |
for (int i = 0; i < len; i++) { |
|
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|
349 |
Klass k = interfaces.getAt(i); |
1 | 350 |
Short index = (Short) classToIndex.get(k.getName().asString()); |
351 |
dos.writeShort(index.shortValue()); |
|
352 |
if (DEBUG) debugMessage("\t" + index); |
|
353 |
} |
|
354 |
} |
|
355 |
||
356 |
protected void writeFields() throws IOException { |
|
13959
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|
357 |
final int javaFieldsCount = klass.getJavaFieldsCount(); |
1 | 358 |
|
359 |
// write number of fields |
|
13959
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|
360 |
dos.writeShort((short) javaFieldsCount); |
1 | 361 |
|
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|
362 |
if (DEBUG) debugMessage("number of fields = " + javaFieldsCount); |
1 | 363 |
|
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|
364 |
for (int index = 0; index < javaFieldsCount; index++) { |
10567
149651837c4a
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parents:
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diff
changeset
|
365 |
short accessFlags = klass.getFieldAccessFlags(index); |
1 | 366 |
dos.writeShort(accessFlags & (short) JVM_RECOGNIZED_FIELD_MODIFIERS); |
367 |
||
10567
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parents:
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diff
changeset
|
368 |
short nameIndex = klass.getFieldNameIndex(index); |
1 | 369 |
dos.writeShort(nameIndex); |
370 |
||
10567
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7092278: "jmap -finalizerinfo" throws "sun.jvm.hotspot.utilities.AssertionFailure: invalid cp index 0 137"
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parents:
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diff
changeset
|
371 |
short signatureIndex = klass.getFieldSignatureIndex(index); |
1 | 372 |
dos.writeShort(signatureIndex); |
373 |
if (DEBUG) debugMessage("\tfield name = " + nameIndex + ", signature = " + signatureIndex); |
|
374 |
||
375 |
short fieldAttributeCount = 0; |
|
2529 | 376 |
boolean hasSyn = hasSyntheticAttribute(accessFlags); |
377 |
if (hasSyn) |
|
1 | 378 |
fieldAttributeCount++; |
379 |
||
10567
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parents:
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diff
changeset
|
380 |
short initvalIndex = klass.getFieldInitialValueIndex(index); |
1 | 381 |
if (initvalIndex != 0) |
382 |
fieldAttributeCount++; |
|
383 |
||
10567
149651837c4a
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parents:
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diff
changeset
|
384 |
short genSigIndex = klass.getFieldGenericSignatureIndex(index); |
1 | 385 |
if (genSigIndex != 0) |
386 |
fieldAttributeCount++; |
|
387 |
||
388 |
dos.writeShort(fieldAttributeCount); |
|
389 |
||
390 |
// write synthetic, if applicable |
|
2529 | 391 |
if (hasSyn) |
1 | 392 |
writeSynthetic(); |
393 |
||
394 |
if (initvalIndex != 0) { |
|
2529 | 395 |
writeIndex(_constantValueIndex); |
1 | 396 |
dos.writeInt(2); |
397 |
dos.writeShort(initvalIndex); |
|
398 |
if (DEBUG) debugMessage("\tfield init value = " + initvalIndex); |
|
399 |
} |
|
400 |
||
401 |
if (genSigIndex != 0) { |
|
2529 | 402 |
writeIndex(_signatureIndex); |
1 | 403 |
dos.writeInt(2); |
404 |
dos.writeShort(genSigIndex); |
|
405 |
if (DEBUG) debugMessage("\tfield generic signature index " + genSigIndex); |
|
406 |
} |
|
407 |
} |
|
408 |
} |
|
409 |
||
410 |
protected boolean isSynthetic(short accessFlags) { |
|
411 |
return (accessFlags & (short) JVM_ACC_SYNTHETIC) != 0; |
|
412 |
} |
|
413 |
||
2529 | 414 |
protected boolean hasSyntheticAttribute(short accessFlags) { |
415 |
// Check if flags have the attribute and if the constant pool contains an entry for it. |
|
416 |
return isSynthetic(accessFlags) && _syntheticIndex != 0; |
|
417 |
} |
|
418 |
||
1 | 419 |
protected void writeSynthetic() throws IOException { |
2529 | 420 |
writeIndex(_syntheticIndex); |
1 | 421 |
dos.writeInt(0); |
422 |
} |
|
423 |
||
424 |
protected void writeMethods() throws IOException { |
|
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diff
changeset
|
425 |
MethodArray methods = klass.getMethods(); |
28931 | 426 |
ArrayList<Method> valid_methods = new ArrayList<Method>(); |
427 |
for (int i = 0; i < methods.length(); i++) { |
|
428 |
Method m = methods.at(i); |
|
429 |
long accessFlags = m.getAccessFlags(); |
|
430 |
// overpass method |
|
431 |
if (accessFlags == (JVM_ACC_PUBLIC | JVM_ACC_SYNTHETIC | JVM_ACC_BRIDGE)) { |
|
432 |
continue; |
|
433 |
} |
|
434 |
valid_methods.add(m); |
|
435 |
} |
|
436 |
final int len = valid_methods.size(); |
|
1 | 437 |
// write number of methods |
438 |
dos.writeShort((short) len); |
|
439 |
if (DEBUG) debugMessage("number of methods = " + len); |
|
440 |
for (int m = 0; m < len; m++) { |
|
28931 | 441 |
writeMethod(valid_methods.get(m)); |
1 | 442 |
} |
443 |
} |
|
444 |
||
445 |
protected void writeMethod(Method m) throws IOException { |
|
446 |
long accessFlags = m.getAccessFlags(); |
|
447 |
dos.writeShort((short) (accessFlags & JVM_RECOGNIZED_METHOD_MODIFIERS)); |
|
448 |
dos.writeShort((short) m.getNameIndex()); |
|
449 |
dos.writeShort((short) m.getSignatureIndex()); |
|
450 |
if (DEBUG) debugMessage("\tmethod name = " + m.getNameIndex() + ", signature = " |
|
451 |
+ m.getSignatureIndex()); |
|
452 |
||
453 |
final boolean isNative = ((accessFlags & JVM_ACC_NATIVE) != 0); |
|
454 |
final boolean isAbstract = ((accessFlags & JVM_ACC_ABSTRACT) != 0); |
|
455 |
||
456 |
short methodAttributeCount = 0; |
|
457 |
||
2529 | 458 |
final boolean hasSyn = hasSyntheticAttribute((short)accessFlags); |
459 |
if (hasSyn) |
|
1 | 460 |
methodAttributeCount++; |
461 |
||
462 |
final boolean hasCheckedExceptions = m.hasCheckedExceptions(); |
|
463 |
if (hasCheckedExceptions) |
|
464 |
methodAttributeCount++; |
|
465 |
||
466 |
final boolean isCodeAvailable = (!isNative) && (!isAbstract); |
|
467 |
if (isCodeAvailable) |
|
468 |
methodAttributeCount++; |
|
469 |
||
470 |
final boolean isGeneric = (m.getGenericSignature() != null); |
|
471 |
if (isGeneric) |
|
472 |
methodAttributeCount++; |
|
473 |
||
474 |
dos.writeShort(methodAttributeCount); |
|
475 |
if (DEBUG) debugMessage("\tmethod attribute count = " + methodAttributeCount); |
|
476 |
||
2529 | 477 |
if (hasSyn) { |
1 | 478 |
if (DEBUG) debugMessage("\tmethod is synthetic"); |
479 |
writeSynthetic(); |
|
480 |
} |
|
481 |
||
482 |
if (isCodeAvailable) { |
|
483 |
byte[] code = m.getByteCode(); |
|
484 |
short codeAttrCount = 0; |
|
485 |
int codeSize = 2 /* max_stack */ + |
|
486 |
2 /* max_locals */ + |
|
487 |
4 /* code_length */ + |
|
488 |
code.length /* code */ + |
|
489 |
2 /* exp. table len. */ + |
|
490 |
2 /* code attr. count */; |
|
491 |
||
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diff
changeset
|
492 |
boolean hasExceptionTable = m.hasExceptionTable(); |
9872915dd78d
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
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diff
changeset
|
493 |
ExceptionTableElement[] exceptionTable = null; |
9872915dd78d
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
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diff
changeset
|
494 |
int exceptionTableLen = 0; |
9872915dd78d
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
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diff
changeset
|
495 |
if (hasExceptionTable) { |
9872915dd78d
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
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diff
changeset
|
496 |
exceptionTable = m.getExceptionTable(); |
9872915dd78d
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
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parents:
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diff
changeset
|
497 |
exceptionTableLen = exceptionTable.length; |
1 | 498 |
if (DEBUG) debugMessage("\tmethod has exception table"); |
13282
9872915dd78d
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diff
changeset
|
499 |
codeSize += exceptionTableLen /* exception table is 4-tuple array */ |
1 | 500 |
* (2 /* start_pc */ + |
501 |
2 /* end_pc */ + |
|
502 |
2 /* handler_pc */ + |
|
503 |
2 /* catch_type */); |
|
504 |
} |
|
505 |
||
506 |
boolean hasLineNumberTable = m.hasLineNumberTable(); |
|
507 |
LineNumberTableElement[] lineNumberTable = null; |
|
508 |
int lineNumberAttrLen = 0; |
|
509 |
||
510 |
if (hasLineNumberTable) { |
|
511 |
if (DEBUG) debugMessage("\tmethod has line number table"); |
|
512 |
lineNumberTable = m.getLineNumberTable(); |
|
513 |
if (DEBUG) debugMessage("\t\tline table length = " + lineNumberTable.length); |
|
514 |
||
515 |
lineNumberAttrLen = 2 /* line number table length */ + |
|
516 |
lineNumberTable.length * (2 /* start_pc */ + 2 /* line_number */); |
|
517 |
||
518 |
codeSize += 2 /* line number table attr index */ + |
|
519 |
4 /* line number table attr length */ + |
|
520 |
lineNumberAttrLen; |
|
521 |
||
522 |
if (DEBUG) debugMessage("\t\tline number table attr size = " + |
|
523 |
lineNumberAttrLen); |
|
524 |
||
525 |
codeAttrCount++; |
|
526 |
} |
|
527 |
||
528 |
boolean hasLocalVariableTable = m.hasLocalVariableTable(); |
|
529 |
LocalVariableTableElement[] localVariableTable = null; |
|
530 |
int localVarAttrLen = 0; |
|
531 |
||
532 |
if (hasLocalVariableTable) { |
|
533 |
if (DEBUG) debugMessage("\tmethod has local variable table"); |
|
534 |
localVariableTable = m.getLocalVariableTable(); |
|
535 |
if (DEBUG) debugMessage("\t\tlocal variable table length = " |
|
536 |
+ localVariableTable.length); |
|
537 |
localVarAttrLen = |
|
538 |
2 /* local variable table length */ + |
|
539 |
localVariableTable.length * ( 2 /* start_pc */ + |
|
540 |
2 /* length */ + |
|
541 |
2 /* name_index */ + |
|
542 |
2 /* signature_index */ + |
|
543 |
2 /* variable index */ ); |
|
544 |
||
545 |
if (DEBUG) debugMessage("\t\tlocal variable attr size = " + |
|
546 |
localVarAttrLen); |
|
547 |
||
548 |
codeSize += 2 /* local variable table attr index */ + |
|
549 |
4 /* local variable table attr length */ + |
|
550 |
localVarAttrLen; |
|
551 |
||
552 |
codeAttrCount++; |
|
553 |
} |
|
554 |
||
555 |
// fix ConstantPoolCache indices to ConstantPool indices. |
|
556 |
rewriteByteCode(m, code); |
|
557 |
||
558 |
// start writing Code |
|
559 |
||
2529 | 560 |
writeIndex(_codeIndex); |
1 | 561 |
|
562 |
dos.writeInt(codeSize); |
|
563 |
if (DEBUG) debugMessage("\tcode attribute length = " + codeSize); |
|
564 |
||
565 |
dos.writeShort((short) m.getMaxStack()); |
|
566 |
if (DEBUG) debugMessage("\tmax stack = " + m.getMaxStack()); |
|
567 |
||
568 |
dos.writeShort((short) m.getMaxLocals()); |
|
569 |
if (DEBUG) debugMessage("\tmax locals = " + m.getMaxLocals()); |
|
570 |
||
571 |
dos.writeInt(code.length); |
|
572 |
if (DEBUG) debugMessage("\tcode size = " + code.length); |
|
573 |
||
574 |
dos.write(code); |
|
575 |
||
576 |
// write exception table size |
|
13282
9872915dd78d
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
10567
diff
changeset
|
577 |
dos.writeShort((short) exceptionTableLen); |
9872915dd78d
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
10567
diff
changeset
|
578 |
if (DEBUG) debugMessage("\texception table length = " + exceptionTableLen); |
1 | 579 |
|
580 |
if (exceptionTableLen != 0) { |
|
13282
9872915dd78d
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
10567
diff
changeset
|
581 |
for (int e = 0; e < exceptionTableLen; e++) { |
9872915dd78d
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
10567
diff
changeset
|
582 |
dos.writeShort((short) exceptionTable[e].getStartPC()); |
9872915dd78d
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
10567
diff
changeset
|
583 |
dos.writeShort((short) exceptionTable[e].getEndPC()); |
9872915dd78d
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
10567
diff
changeset
|
584 |
dos.writeShort((short) exceptionTable[e].getHandlerPC()); |
9872915dd78d
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
10567
diff
changeset
|
585 |
dos.writeShort((short) exceptionTable[e].getCatchTypeIndex()); |
1 | 586 |
} |
587 |
} |
|
588 |
||
589 |
dos.writeShort((short)codeAttrCount); |
|
590 |
if (DEBUG) debugMessage("\tcode attribute count = " + codeAttrCount); |
|
591 |
||
592 |
// write LineNumberTable, if available. |
|
593 |
if (hasLineNumberTable) { |
|
2529 | 594 |
writeIndex(_lineNumberTableIndex); |
1 | 595 |
dos.writeInt(lineNumberAttrLen); |
596 |
dos.writeShort((short) lineNumberTable.length); |
|
597 |
for (int l = 0; l < lineNumberTable.length; l++) { |
|
598 |
dos.writeShort((short) lineNumberTable[l].getStartBCI()); |
|
599 |
dos.writeShort((short) lineNumberTable[l].getLineNumber()); |
|
600 |
} |
|
601 |
} |
|
602 |
||
603 |
// write LocalVariableTable, if available. |
|
604 |
if (hasLocalVariableTable) { |
|
2529 | 605 |
writeIndex((short) _localVariableTableIndex); |
1 | 606 |
dos.writeInt(localVarAttrLen); |
607 |
dos.writeShort((short) localVariableTable.length); |
|
608 |
for (int l = 0; l < localVariableTable.length; l++) { |
|
609 |
dos.writeShort((short) localVariableTable[l].getStartBCI()); |
|
610 |
dos.writeShort((short) localVariableTable[l].getLength()); |
|
611 |
dos.writeShort((short) localVariableTable[l].getNameCPIndex()); |
|
612 |
dos.writeShort((short) localVariableTable[l].getDescriptorCPIndex()); |
|
613 |
dos.writeShort((short) localVariableTable[l].getSlot()); |
|
614 |
} |
|
615 |
} |
|
616 |
} |
|
617 |
||
2529 | 618 |
if (hasCheckedExceptions) { |
619 |
CheckedExceptionElement[] exceptions = m.getCheckedExceptions(); |
|
620 |
writeIndex(_exceptionsIndex); |
|
621 |
||
622 |
int attrSize = 2 /* number_of_exceptions */ + |
|
623 |
exceptions.length * 2 /* exception_index */; |
|
624 |
dos.writeInt(attrSize); |
|
625 |
dos.writeShort(exceptions.length); |
|
626 |
if (DEBUG) debugMessage("\tmethod has " + exceptions.length |
|
627 |
+ " checked exception(s)"); |
|
628 |
for (int e = 0; e < exceptions.length; e++) { |
|
629 |
short cpIndex = (short) exceptions[e].getClassCPIndex(); |
|
630 |
dos.writeShort(cpIndex); |
|
631 |
} |
|
632 |
} |
|
633 |
||
1 | 634 |
if (isGeneric) { |
635 |
writeGenericSignature(m.getGenericSignature().asString()); |
|
636 |
} |
|
637 |
} |
|
638 |
||
639 |
protected void rewriteByteCode(Method m, byte[] code) { |
|
640 |
ByteCodeRewriter r = new ByteCodeRewriter(m, cpool, code); |
|
641 |
r.rewrite(); |
|
642 |
} |
|
643 |
||
644 |
protected void writeGenericSignature(String signature) throws IOException { |
|
2529 | 645 |
writeIndex(_signatureIndex); |
1 | 646 |
if (DEBUG) debugMessage("signature attribute = " + _signatureIndex); |
647 |
dos.writeInt(2); |
|
648 |
Short index = (Short) utf8ToIndex.get(signature); |
|
649 |
dos.writeShort(index.shortValue()); |
|
650 |
if (DEBUG) debugMessage("generic signature = " + index); |
|
651 |
} |
|
652 |
||
653 |
protected void writeClassAttributes() throws IOException { |
|
654 |
final long flags = klass.getAccessFlags(); |
|
2529 | 655 |
final boolean hasSyn = hasSyntheticAttribute((short) flags); |
1 | 656 |
|
657 |
// check for source file |
|
658 |
short classAttributeCount = 0; |
|
659 |
||
2529 | 660 |
if (hasSyn) |
1 | 661 |
classAttributeCount++; |
662 |
||
663 |
Symbol sourceFileName = klass.getSourceFileName(); |
|
664 |
if (sourceFileName != null) |
|
665 |
classAttributeCount++; |
|
666 |
||
667 |
Symbol genericSignature = klass.getGenericSignature(); |
|
668 |
if (genericSignature != null) |
|
669 |
classAttributeCount++; |
|
670 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13282
diff
changeset
|
671 |
U2Array innerClasses = klass.getInnerClasses(); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13282
diff
changeset
|
672 |
final int numInnerClasses = (int) (innerClasses.length() / 4); |
1 | 673 |
if (numInnerClasses != 0) |
674 |
classAttributeCount++; |
|
675 |
||
676 |
dos.writeShort(classAttributeCount); |
|
677 |
if (DEBUG) debugMessage("class attribute count = " + classAttributeCount); |
|
678 |
||
2529 | 679 |
if (hasSyn) |
1 | 680 |
writeSynthetic(); |
681 |
||
682 |
// write SourceFile, if any |
|
683 |
if (sourceFileName != null) { |
|
2529 | 684 |
writeIndex(_sourceFileIndex); |
1 | 685 |
if (DEBUG) debugMessage("source file attribute = " + _sourceFileIndex); |
686 |
dos.writeInt(2); |
|
687 |
Short index = (Short) utf8ToIndex.get(sourceFileName.asString()); |
|
688 |
dos.writeShort(index.shortValue()); |
|
689 |
if (DEBUG) debugMessage("source file name = " + index); |
|
690 |
} |
|
691 |
||
692 |
// write Signature, if any |
|
693 |
if (genericSignature != null) { |
|
694 |
writeGenericSignature(genericSignature.asString()); |
|
695 |
} |
|
696 |
||
697 |
// write inner classes, if any |
|
698 |
if (numInnerClasses != 0) { |
|
2529 | 699 |
writeIndex(_innerClassesIndex); |
1 | 700 |
final int innerAttrLen = 2 /* number_of_inner_classes */ + |
701 |
numInnerClasses * ( |
|
702 |
2 /* inner_class_info_index */ + |
|
703 |
2 /* outer_class_info_index */ + |
|
704 |
2 /* inner_class_name_index */ + |
|
705 |
2 /* inner_class_access_flags */); |
|
706 |
dos.writeInt(innerAttrLen); |
|
707 |
||
708 |
dos.writeShort(numInnerClasses); |
|
709 |
if (DEBUG) debugMessage("class has " + numInnerClasses + " inner class entries"); |
|
710 |
||
711 |
for (int index = 0; index < numInnerClasses * 4; index++) { |
|
13728
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coleenp
parents:
13282
diff
changeset
|
712 |
dos.writeShort(innerClasses.at(index)); |
1 | 713 |
} |
714 |
} |
|
715 |
} |
|
716 |
} |