| /* |
| * Copyright (c) 2001, 2013, 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.debugger.windows.x86; |
| |
| import sun.jvm.hotspot.debugger.*; |
| import sun.jvm.hotspot.debugger.x86.*; |
| import sun.jvm.hotspot.debugger.cdbg.*; |
| import sun.jvm.hotspot.debugger.cdbg.basic.*; |
| import sun.jvm.hotspot.debugger.windbg.*; |
| |
| public class WindowsX86CFrame extends BasicCFrame { |
| private Address ebp; |
| private Address pc; |
| |
| private static final int ADDRESS_SIZE = 4; |
| |
| /** Constructor for topmost frame */ |
| public WindowsX86CFrame(WindbgDebugger dbg, Address ebp, Address pc) { |
| super(dbg.getCDebugger()); |
| this.ebp = ebp; |
| this.pc = pc; |
| this.dbg = dbg; |
| } |
| |
| public CFrame sender(ThreadProxy thread) { |
| X86ThreadContext context = (X86ThreadContext) thread.getContext(); |
| Address esp = context.getRegisterAsAddress(X86ThreadContext.ESP); |
| |
| if ( (ebp == null) || ebp.lessThan(esp) ) { |
| return null; |
| } |
| |
| // Check alignment of ebp |
| if ( dbg.getAddressValue(ebp) % ADDRESS_SIZE != 0) { |
| return null; |
| } |
| |
| Address nextEBP = ebp.getAddressAt( 0 * ADDRESS_SIZE); |
| if (nextEBP == null || nextEBP.lessThanOrEqual(ebp)) { |
| return null; |
| } |
| Address nextPC = ebp.getAddressAt( 1 * ADDRESS_SIZE); |
| if (nextPC == null) { |
| return null; |
| } |
| return new WindowsX86CFrame(dbg, nextEBP, nextPC); |
| } |
| |
| public Address pc() { |
| return pc; |
| } |
| |
| public Address localVariableBase() { |
| return ebp; |
| } |
| |
| private WindbgDebugger dbg; |
| } |