Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/interpreter/Bytecode.java @ 271:818a18cd69a8
6730514: assertion failure in mangling code when expanding by 0 bytes
Summary: An expansion by 0 bytes was not anticipated when the assertion was composed.
Reviewed-by: jjh, jcoomes, apetrusenko
author | jmasa |
---|---|
date | Wed, 30 Jul 2008 11:54:00 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2001-2004 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ package sun.jvm.hotspot.interpreter; import sun.jvm.hotspot.oops.*; import sun.jvm.hotspot.utilities.*; public class Bytecode { Method method; int bci; static final int jintSize = 4; static final String spaces = " "; static final String comma = ", "; Bytecode(Method method, int bci) { this.method = method; this.bci = bci; } // Address computation // NOTE: assumes that the start of the method's bytecodes is 4-byte aligned int alignedOffset(int offset) { return Bits.roundTo(bci + offset, jintSize) - bci; } int javaSignedWordAt(int offset) { return method.getBytecodeIntArg(bci + offset); } short javaShortAt(int offset) { return method.getBytecodeShortArg(bci + offset); } byte javaByteAt(int offset) { return method.getBytecodeByteArg(bci + offset); } public Method method() { return method; } public int bci() { return bci; } // hotspot byte code public int code() { return Bytecodes.codeAt(method(), bci()); } // jvm byte code public int javaCode() { return Bytecodes.javaCode(code()); } public String getBytecodeName() { return Bytecodes.name(code()); } public String getJavaBytecodeName() { return Bytecodes.name(javaCode()); } public int getLength() { return Bytecodes.lengthAt(method(), bci()); } public int getJavaLength() { return Bytecodes.javaLengthAt(method(), bci()); } public String toString() { StringBuffer buf = new StringBuffer(getJavaBytecodeName()); if (code() != javaCode()) { buf.append(spaces); buf.append('['); buf.append(getBytecodeName()); buf.append(']'); } return buf.toString(); } }