Mercurial > hg > graal-jvmci-8
view agent/src/share/classes/sun/jvm/hotspot/debugger/MachineDescription.java @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
---|---|
date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | ba764ed4b6f2 |
line wrap: on
line source
/* * Copyright 2000-2001 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.debugger; import java.io.Serializable; /** Encapsulates machine-specific information that currently must be exported up to the Java level. Implementations must be serializable. */ public interface MachineDescription extends Serializable { /** Returns the size of an address in bytes. Currently needed to be able to traverse arrays of pointers or oops. */ public long getAddressSize(); /** Returns the size of an address in bytes. Currently needed to be able to traverse arrays of pointers or oops. (FIXME: since we're already reading the Java primitive types' sizes from the remote VM, it would be nice to remove this routine, using a similar mechanism to how the TypeDataBase deals with primitive types.) */ public long getOopSize(); /** Returns the maximum value of the C integer type with the given size in bytes and signedness. Throws IllegalArgumentException if the size in bytes is not legal for a C type (or can not be handled by this system). Note that the current implementation does not currently handle unsigned 8-byte longs properly. */ public long cIntegerTypeMaxValue(long sizeInBytes, boolean isUnsigned); /** Returns the minimum value of the C integer type with the given size in bytes and signedness. Throws IllegalArgumentException if the size in bytes is not legal for a C type (or can not be handled by this system). */ public long cIntegerTypeMinValue(long sizeInBytes, boolean isUnsigned); /** Indicates whether the CPU is big- or little-endian. This information is typically only needed by the Debugger implementation. */ public boolean isBigEndian(); /** Indicates whether the underlying machine supports the LP64 data model (currently only SPARC/64). */ public boolean isLP64(); }