Mercurial > hg > truffle
diff c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotProxy.java @ 1423:760213a60e8b
* rewrite of the code installation
* partial support for safepoints
* macro-based CiTargetMethod interface
* code stub support
author | Lukas Stadler <lukas.stadler@oracle.com> |
---|---|
date | Mon, 16 Aug 2010 18:59:36 -0700 |
parents | c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotInternalObject.java@6223633ce7dd |
children | 149b1d2316de |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotProxy.java Mon Aug 16 18:59:36 2010 -0700 @@ -0,0 +1,86 @@ +/* + * Copyright (c) 2010 Sun Microsystems, Inc. All rights reserved. + * + * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product that is + * described in this document. In particular, and without limitation, these intellectual property rights may include one + * or more of the U.S. patents listed at http://www.sun.com/patents and one or more additional patents or pending patent + * applications in the U.S. and in other countries. + * + * U.S. Government Rights - Commercial software. Government users are subject to the Sun Microsystems, Inc. standard + * license agreement and applicable provisions of the FAR and its supplements. + * + * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or registered + * trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks are used under license and + * are trademarks or registered trademarks of SPARC International, Inc. in the U.S. and other countries. + * + * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open Company, Ltd. + */ +package com.sun.hotspot.c1x; + +/** + * Provides methods to classify the HotSpot-internal identifiers. + * + * @author Lukas Stadler + */ +public class HotSpotProxy { + + private HotSpotProxy() { + } + + private enum CompilerObjectType { + // this enum needs to have the same values as the one in c1x_Compiler.hpp + STUB(0x100000000000000l), + METHOD(0x200000000000000l), + CLASS(0x300000000000000l), + SYMBOL(0x400000000000000l), + CONSTANT_POOL(0x500000000000000l), + CONSTANT(0x600000000000000l), + TYPE_MASK(0xf00000000000000l); + + public final long bits; + + CompilerObjectType(long bits) { + this.bits = bits; + } + } + + private static boolean isType(long id, CompilerObjectType type) { + return (id & CompilerObjectType.TYPE_MASK.bits) == type.bits; + } + + public static boolean isStub(long id) { + return isType(id, CompilerObjectType.STUB); + } + + public static boolean isMethod(long id) { + return isType(id, CompilerObjectType.METHOD); + } + + public static boolean isClass(long id) { + return isType(id, CompilerObjectType.CLASS); + } + + public static boolean isSymbol(long id) { + return isType(id, CompilerObjectType.SYMBOL); + } + + public static boolean isConstantPool(long id) { + return isType(id, CompilerObjectType.CONSTANT_POOL); + } + + public static boolean isConstant(long id) { + return isType(id, CompilerObjectType.CONSTANT_POOL); + } + + public static String toString(long id) { + CompilerObjectType type = null; + for (CompilerObjectType t : CompilerObjectType.values()) { + if ((id & CompilerObjectType.TYPE_MASK.bits) == t.bits) { + type = t; + } + } + long num = id & ~CompilerObjectType.TYPE_MASK.bits; + return type + " " + num; + } + +}