| /* |
| * Copyright (c) 2002, 2003, 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.windbg; |
| |
| import sun.jvm.hotspot.debugger.*; |
| import sun.jvm.hotspot.debugger.win32.coff.*; |
| import sun.jvm.hotspot.debugger.cdbg.*; |
| import sun.jvm.hotspot.utilities.Assert; |
| import sun.jvm.hotspot.utilities.memo.*; |
| |
| /** Provides a simple wrapper around the COFF library which handles |
| relocation. A DLL can represent either a DLL or an EXE file. */ |
| |
| public class DLL implements LoadObject { |
| |
| public DLL(WindbgDebugger dbg, String filename, long size, Address relocation) throws COFFException { |
| this.dbg = dbg; |
| fullPathName = filename; |
| this.size = size; |
| file = new MemoizedObject() { |
| public Object computeValue() { |
| return COFFFileParser.getParser().parse(fullPathName); |
| } |
| }; |
| addr = relocation; |
| } |
| |
| /** This constructor was originally used to fetch the DLL's name out |
| of the target process to match it up with the known DLL names, |
| before the fetching of the DLL names and bases was folded into |
| one command. It is no longer used. If it is used, getName() will |
| return null and getSize() will return 0. */ |
| public DLL(Address base) throws COFFException { |
| this.addr = base; |
| file = new MemoizedObject() { |
| public Object computeValue() { |
| return COFFFileParser.getParser().parse(new AddressDataSource(addr)); |
| } |
| }; |
| } |
| |
| /** Indicates whether this is really a DLL or actually a .EXE |
| file. */ |
| public boolean isDLL() { |
| return getFile().getHeader().hasCharacteristic(Characteristics.IMAGE_FILE_DLL); |
| } |
| |
| /** Look up a symbol; returns absolute address or null if symbol was |
| not found. */ |
| public Address lookupSymbol(String symbol) throws COFFException { |
| if (!isDLL()) { |
| return null; |
| } |
| ExportDirectoryTable exports = getExportDirectoryTable(); |
| return lookupSymbol(symbol, exports, |
| 0, exports.getNumberOfNamePointers() - 1); |
| } |
| |
| public Address getBase() { |
| return addr; |
| } |
| |
| /** Returns the full path name of this DLL/EXE, or null if this DLL |
| object was created by parsing the target process's address |
| space. */ |
| public String getName() { |
| return fullPathName; |
| } |
| |
| public long getSize() { |
| return size; |
| } |
| |
| public CDebugInfoDataBase getDebugInfoDataBase() throws DebuggerException { |
| if (db != null) { |
| return db; |
| } |
| |
| // Try to parse |
| if (dbg == null) { |
| return null; // Need WindbgDebugger |
| } |
| |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(fullPathName != null, "Need full path name to build debug info database"); |
| } |
| |
| db = new WindbgCDebugInfoBuilder(dbg).buildDataBase(fullPathName, addr); |
| return db; |
| } |
| |
| public BlockSym debugInfoForPC(Address pc) throws DebuggerException { |
| CDebugInfoDataBase db = getDebugInfoDataBase(); |
| if (db == null) { |
| return null; |
| } |
| return db.debugInfoForPC(pc); |
| } |
| |
| public ClosestSymbol closestSymbolToPC(Address pcAsAddr) throws DebuggerException { |
| ExportDirectoryTable exports = getExportDirectoryTable(); |
| if (exports == null) { |
| return null; |
| } |
| String name = null; |
| long pc = dbg.getAddressValue(pcAsAddr); |
| long diff = Long.MAX_VALUE; |
| long base = dbg.getAddressValue(addr); |
| for (int i = 0; i < exports.getNumberOfNamePointers(); i++) { |
| if (!exports.isExportAddressForwarder(exports.getExportOrdinal(i))) { |
| long tmp = base + (exports.getExportAddress(exports.getExportOrdinal(i)) & 0xFFFFFFFF); |
| if ((tmp <= pc) && ((pc - tmp) < diff)) { |
| diff = pc - tmp; |
| name = exports.getExportName(i); |
| } |
| } |
| } |
| if (name == null) { |
| return null; |
| } |
| return new ClosestSymbol(name, diff); |
| } |
| |
| public LineNumberInfo lineNumberForPC(Address pc) throws DebuggerException { |
| CDebugInfoDataBase db = getDebugInfoDataBase(); |
| if (db == null) { |
| return null; |
| } |
| return db.lineNumberForPC(pc); |
| } |
| |
| public void close() { |
| getFile().close(); |
| file = null; |
| } |
| |
| //---------------------------------------------------------------------- |
| // Internals only below this point |
| // |
| |
| private COFFFile getFile() { |
| return (COFFFile) file.getValue(); |
| } |
| |
| private Address lookupSymbol(String symbol, ExportDirectoryTable exports, |
| int loIdx, int hiIdx) { |
| do { |
| int curIdx = ((loIdx + hiIdx) >> 1); |
| String cur = exports.getExportName(curIdx); |
| if (symbol.equals(cur)) { |
| return addr.addOffsetTo( |
| ((long) exports.getExportAddress(exports.getExportOrdinal(curIdx))) & 0xFFFFFFFFL |
| ); |
| } |
| if (symbol.compareTo(cur) < 0) { |
| if (hiIdx == curIdx) { |
| hiIdx = curIdx - 1; |
| } else { |
| hiIdx = curIdx; |
| } |
| } else { |
| if (loIdx == curIdx) { |
| loIdx = curIdx + 1; |
| } else { |
| loIdx = curIdx; |
| } |
| } |
| } while (loIdx <= hiIdx); |
| |
| return null; |
| } |
| |
| private ExportDirectoryTable getExportDirectoryTable() { |
| return |
| getFile().getHeader().getOptionalHeader().getDataDirectories().getExportDirectoryTable(); |
| } |
| |
| private WindbgDebugger dbg; |
| private String fullPathName; |
| private long size; |
| // MemoizedObject contains a COFFFile |
| private MemoizedObject file; |
| // Base address of module in target process |
| private Address addr; |
| // Debug info database for this DLL |
| private CDebugInfoDataBase db; |
| } |