Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/interpreter/Bytecode.java @ 2042:0a8e0d4345b3 hs20-b05 jdk7-b124
7010068: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - first pass
Summary: Update the copyright to be 2010 on all changed files in OpenJDK
Reviewed-by: jcoomes
| author | trims |
|---|---|
| date | Mon, 03 Jan 2011 15:30:05 -0800 |
| parents | c18cbe5936b8 |
| children | 6a991dcb52bb |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2001, 2004, 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.interpreter; | |
| 26 | |
| 27 import sun.jvm.hotspot.oops.*; | |
| 28 import sun.jvm.hotspot.utilities.*; | |
| 29 | |
| 30 public class Bytecode { | |
| 31 Method method; | |
| 32 int bci; | |
| 33 static final int jintSize = 4; | |
| 34 static final String spaces = " "; | |
| 35 static final String comma = ", "; | |
| 36 | |
| 37 Bytecode(Method method, int bci) { | |
| 38 this.method = method; | |
| 39 this.bci = bci; | |
| 40 } | |
| 41 | |
| 42 // Address computation | |
| 43 // NOTE: assumes that the start of the method's bytecodes is 4-byte aligned | |
| 44 int alignedOffset(int offset) { | |
| 45 return Bits.roundTo(bci + offset, jintSize) - bci; | |
| 46 } | |
| 47 | |
| 48 int javaSignedWordAt(int offset) { | |
| 49 return method.getBytecodeIntArg(bci + offset); | |
| 50 } | |
| 51 | |
| 52 short javaShortAt(int offset) { | |
| 53 return method.getBytecodeShortArg(bci + offset); | |
| 54 } | |
| 55 | |
| 56 byte javaByteAt(int offset) { | |
| 57 return method.getBytecodeByteArg(bci + offset); | |
| 58 } | |
| 59 | |
| 60 public Method method() { return method; } | |
| 61 public int bci() { return bci; } | |
| 62 | |
| 63 // hotspot byte code | |
| 64 public int code() { | |
| 65 return Bytecodes.codeAt(method(), bci()); | |
| 66 } | |
| 67 | |
| 68 // jvm byte code | |
| 69 public int javaCode() { | |
| 70 return Bytecodes.javaCode(code()); | |
| 71 } | |
| 72 | |
| 73 public String getBytecodeName() { | |
| 74 return Bytecodes.name(code()); | |
| 75 } | |
| 76 | |
| 77 public String getJavaBytecodeName() { | |
| 78 return Bytecodes.name(javaCode()); | |
| 79 } | |
| 80 | |
| 81 public int getLength() { | |
| 82 return Bytecodes.lengthAt(method(), bci()); | |
| 83 } | |
| 84 | |
| 85 public int getJavaLength() { | |
| 86 return Bytecodes.javaLengthAt(method(), bci()); | |
| 87 } | |
| 88 | |
| 89 public String toString() { | |
| 90 StringBuffer buf = new StringBuffer(getJavaBytecodeName()); | |
| 91 if (code() != javaCode()) { | |
| 92 buf.append(spaces); | |
| 93 buf.append('['); | |
| 94 buf.append(getBytecodeName()); | |
| 95 buf.append(']'); | |
| 96 } | |
| 97 return buf.toString(); | |
| 98 } | |
| 99 } |