1 /* 2 * Copyright 2001 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.debugger.cdbg.basic; 26 27 import sun.jvm.hotspot.debugger.*; 28 import sun.jvm.hotspot.debugger.cdbg.*; 29 30 /** Basic implementation of the CFrame interface providing some of the 31 functionality in a platform-independent manner. */ 32 33 public abstract class BasicCFrame implements CFrame { 34 private CDebugger dbg; 35 36 protected BasicCFrame(CDebugger dbg) { 37 this.dbg = dbg; 38 } 39 40 protected CDebugger dbg() { 41 return dbg; 42 } 43 44 public LoadObject loadObjectForPC() { 45 return dbg.loadObjectContainingPC(pc()); 46 } 47 48 public BlockSym blockForPC() { 49 LoadObject lo = loadObjectForPC(); 50 if (lo == null) { 51 return null; 52 } 53 return lo.debugInfoForPC(pc()); 54 } 55 56 public ClosestSymbol closestSymbolToPC() { 57 LoadObject lo = loadObjectForPC(); 58 if (lo == null) { 59 return null; 60 } 61 return lo.closestSymbolToPC(pc()); 62 } 63 64 public void iterateLocals(ObjectVisitor v) { 65 BlockSym block = blockForPC(); 66 while (block != null) { 67 for (int i = 0; i < block.getNumLocals(); i++) { 68 final LocalSym local = block.getLocal(i); 69 Type t = local.getType(); 70 // t should not be null, but be robust in case of bugs in 71 // debug info 72 if (t != null) { 73 t.iterateObject(localVariableBase().addOffsetTo(local.getFrameOffset()), 74 v, 75 new NamedFieldIdentifier() { 76 public Type getType() { 77 return local.getType(); 78 } 79 80 public String getName() { 81 return local.getName(); 82 } 83 84 public String toString() { 85 return getName(); 86 } 87 }); 88 } 89 } 90 91 block = block.getParent(); 92 } 93 } 94 }