1/* 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25package sun.jvm.hotspot.debugger.linux.ppc64; 26 27import sun.jvm.hotspot.debugger.*; 28import sun.jvm.hotspot.debugger.ppc64.*; 29import sun.jvm.hotspot.debugger.linux.*; 30import sun.jvm.hotspot.debugger.cdbg.*; 31import sun.jvm.hotspot.debugger.cdbg.basic.*; 32 33final public class LinuxPPC64CFrame extends BasicCFrame { 34 // package/class internals only 35 36 public LinuxPPC64CFrame(LinuxDebugger dbg, Address sp, Address pc, int address_size) { 37 super(dbg.getCDebugger()); 38 this.sp = sp; 39 this.pc = pc; 40 this.dbg = dbg; 41 this.address_size = address_size; 42 } 43 44 // override base class impl to avoid ELF parsing 45 public ClosestSymbol closestSymbolToPC() { 46 // try native lookup in debugger. 47 return dbg.lookup(dbg.getAddressValue(pc())); 48 } 49 50 public Address pc() { 51 return pc; 52 } 53 54 public Address localVariableBase() { 55 return sp; 56 } 57 58 public CFrame sender(ThreadProxy thread) { 59 if (sp == null) { 60 return null; 61 } 62 63 Address nextSP = sp.getAddressAt(0); 64 if (nextSP == null) { 65 return null; 66 } 67 Address nextPC = sp.getAddressAt(2 * address_size); 68 if (nextPC == null) { 69 return null; 70 } 71 return new LinuxPPC64CFrame(dbg, nextSP, nextPC, address_size); 72 } 73 74 public static int PPC64_STACK_BIAS = 0; 75 private static int address_size; 76 private Address pc; 77 private Address sp; 78 private LinuxDebugger dbg; 79} 80