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view agent/src/share/classes/sun/jvm/hotspot/debugger/linux/sparc/LinuxSPARCCFrame.java @ 3972:4f93f0d00802
7059019: G1: add G1 support to the SA
Summary: Extend the SA to recognize the G1CollectedHeap and implement any code that's needed by our serviceability tools (jmap, jinfo, jstack, etc.) that depend on the SA.
Reviewed-by: never, poonam, johnc
author | tonyp |
---|---|
date | Tue, 20 Sep 2011 09:59:59 -0400 |
parents | c18cbe5936b8 |
children | b87e5a681416 |
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/* * Copyright (c) 2006, 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.sparc; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.debugger.sparc.*; import sun.jvm.hotspot.debugger.linux.*; import sun.jvm.hotspot.debugger.cdbg.*; import sun.jvm.hotspot.debugger.cdbg.basic.*; final public class LinuxSPARCCFrame extends BasicCFrame { // package/class internals only public LinuxSPARCCFrame(LinuxDebugger dbg, Address sp, Address pc, int address_size) { super(dbg.getCDebugger()); this.sp = sp; this.pc = pc; this.dbg = dbg; this.address_size=address_size; if (address_size==8) SPARC_STACK_BIAS = 0x7ff; else SPARC_STACK_BIAS = 0x0; } // 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 sp; } public CFrame sender() { if (sp == null) { return null; } Address nextSP = sp.getAddressAt( SPARCThreadContext.R_SP * address_size + SPARC_STACK_BIAS); if (nextSP == null) { return null; } Address nextPC = sp.getAddressAt(SPARCThreadContext.R_O7 * address_size + SPARC_STACK_BIAS); if (nextPC == null) { return null; } return new LinuxSPARCCFrame(dbg, nextSP, nextPC,address_size); } public static int SPARC_STACK_BIAS; private static int address_size; private Address pc; private Address sp; private LinuxDebugger dbg; }