Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/debugger/linux/x86/LinuxX86CFrame.java @ 10343:6bd680e9ea35
8003421: NPG: Move oops out of InstanceKlass into mirror
Summary: Inject protection_domain, signers, init_lock into java_lang_Class
Reviewed-by: stefank, dholmes, sla
author | coleenp |
---|---|
date | Wed, 22 May 2013 14:37:49 -0400 |
parents | 651919d134f7 |
children | de6a9e811145 |
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/* * Copyright (c) 2003, 2012, 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.linux.x86; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.debugger.linux.*; import sun.jvm.hotspot.debugger.cdbg.*; import sun.jvm.hotspot.debugger.cdbg.basic.*; import sun.jvm.hotspot.debugger.x86.*; final public class LinuxX86CFrame extends BasicCFrame { // package/class internals only public LinuxX86CFrame(LinuxDebugger dbg, Address ebp, Address pc) { super(dbg.getCDebugger()); this.ebp = ebp; this.pc = pc; this.dbg = dbg; } // override base class impl to avoid ELF parsing public ClosestSymbol closestSymbolToPC() { // try native lookup in debugger. return dbg.lookup(dbg.getAddressValue(pc())); } public Address pc() { return pc; } public Address localVariableBase() { return ebp; } 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 LinuxX86CFrame(dbg, nextEBP, nextPC); } private static final int ADDRESS_SIZE = 4; private Address pc; private Address ebp; private LinuxDebugger dbg; }