Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/debugger/cdbg/basic/x86/X86CFrame.java @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
---|---|
date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
line wrap: on
line source
/* * Copyright 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.cdbg.basic.x86; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.debugger.cdbg.*; import sun.jvm.hotspot.debugger.cdbg.basic.*; /** Basic X86 frame functionality providing sender() functionality. */ public class X86CFrame extends BasicCFrame { private Address ebp; private Address pc; private static final int ADDRESS_SIZE = 4; /** Constructor for topmost frame */ public X86CFrame(CDebugger dbg, Address ebp, Address pc) { super(dbg); this.ebp = ebp; this.pc = pc; } public CFrame sender() { if (ebp == null) { return null; } Address nextEBP = ebp.getAddressAt( 0 * ADDRESS_SIZE); if (nextEBP == null) { return null; } Address nextPC = ebp.getAddressAt( 1 * ADDRESS_SIZE); if (nextPC == null) { return null; } return new X86CFrame(dbg(), nextEBP, nextPC); } public Address pc() { return pc; } public Address localVariableBase() { return ebp; } }