Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/c1/Runtime1.java @ 7353:b5280041f59e
Experiment with soft alignment for branch targets.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sun, 13 Jan 2013 19:32:16 +0100 |
parents | 3e8fbc61cee8 |
children |
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/* * Copyright (c) 2000, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ package sun.jvm.hotspot.c1; import java.util.*; import sun.jvm.hotspot.code.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.types.*; /** Currently a minimal port to get C1 frame traversal working */ public class Runtime1 { private static Field blobsField; static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } private static synchronized void initialize(TypeDataBase db) { Type type = db.lookupType("Runtime1"); blobsField = type.getField("_blobs"); } public Runtime1() { } /** FIXME: consider making argument "type-safe" in Java port */ public Address entryFor(int id) { return blobFor(id).codeBegin(); } /** FIXME: consider making argument "type-safe" in Java port */ public CodeBlob blobFor(int id) { Address blobAddr = blobsField.getStaticFieldAddress().getAddressAt(id * VM.getVM().getAddressSize()); return VM.getVM().getCodeCache().createCodeBlobWrapper(blobAddr); } }