Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/debugger/linux/amd64/LinuxAMD64CFrame.java @ 17736:58fc1b1523dc
8034079: G1: Refactor the HeapRegionSet hierarchy
Reviewed-by: tschatzl, pliden
author | brutisso |
---|---|
date | Fri, 14 Mar 2014 10:15:46 +0100 |
parents | 55fb97c4c58d |
children | 4ca6dc0799b6 |
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/* * Copyright (c) 2003, 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.linux.amd64; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.debugger.amd64.*; import sun.jvm.hotspot.debugger.linux.*; import sun.jvm.hotspot.debugger.cdbg.*; import sun.jvm.hotspot.debugger.cdbg.basic.*; final public class LinuxAMD64CFrame extends BasicCFrame { public LinuxAMD64CFrame(LinuxDebugger dbg, Address rbp, Address rip) { super(dbg.getCDebugger()); this.rbp = rbp; this.rip = rip; 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 rip; } public Address localVariableBase() { return rbp; } public CFrame sender(ThreadProxy thread) { AMD64ThreadContext context = (AMD64ThreadContext) thread.getContext(); Address rsp = context.getRegisterAsAddress(AMD64ThreadContext.RSP); if ( (rbp == null) || rbp.lessThan(rsp) ) { return null; } // Check alignment of rbp if ( dbg.getAddressValue(rbp) % ADDRESS_SIZE != 0) { return null; } Address nextRBP = rbp.getAddressAt( 0 * ADDRESS_SIZE); if (nextRBP == null || nextRBP.lessThanOrEqual(rbp)) { return null; } Address nextPC = rbp.getAddressAt( 1 * ADDRESS_SIZE); if (nextPC == null) { return null; } return new LinuxAMD64CFrame(dbg, nextRBP, nextPC); } // package/class internals only private static final int ADDRESS_SIZE = 8; private Address rip; private Address rbp; private LinuxDebugger dbg; }