1 /* 2 * Copyright (c) 2006, 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, 20 * CA 94065 USA or visit www.oracle.com if you need additional information or 21 * have any questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.debugger.linux.sparc; 26 27 import sun.jvm.hotspot.debugger.*; 28 import sun.jvm.hotspot.debugger.sparc.*; 29 import sun.jvm.hotspot.debugger.linux.*; 30 import sun.jvm.hotspot.debugger.cdbg.*; 31 import sun.jvm.hotspot.debugger.cdbg.basic.*; 32 33 final public class LinuxSPARCCFrame extends BasicCFrame { 34 // package/class internals only 35 36 public LinuxSPARCCFrame(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 if (address_size==8) SPARC_STACK_BIAS = 0x7ff; 43 else SPARC_STACK_BIAS = 0x0; 44 } 45 46 // override base class impl to avoid ELF parsing 47 public ClosestSymbol closestSymbolToPC() { 48 // try native lookup in debugger. 49 return dbg.lookup(dbg.getAddressValue(pc())); 50 } 51 52 public Address pc() { 53 return pc; 54 } 55 56 public Address localVariableBase() { 57 return sp; 58 } 59 60 public CFrame sender() { 61 if (sp == null) { 62 return null; 63 } 64 65 Address nextSP = sp.getAddressAt( SPARCThreadContext.R_SP * address_size + SPARC_STACK_BIAS); 66 if (nextSP == null) { 67 return null; 68 } 69 Address nextPC = sp.getAddressAt(SPARCThreadContext.R_O7 * address_size + SPARC_STACK_BIAS); 70 if (nextPC == null) { 71 return null; 72 } 73 return new LinuxSPARCCFrame(dbg, nextSP, nextPC,address_size); 74 } 75 76 public static int SPARC_STACK_BIAS; 77 private static int address_size; 78 private Address pc; 79 private Address sp; 80 private LinuxDebugger dbg; 81 }