1 /* 2 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2020, NTT DATA. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 package sun.jvm.hotspot.debugger.linux.amd64; 27 28 import java.lang.ref.Cleaner; 29 import sun.jvm.hotspot.debugger.Address; 30 import sun.jvm.hotspot.debugger.DebuggerException; 31 32 public class DwarfParser { 33 private final long p_dwarf_context; // native dwarf context handle 34 35 private static native void init0(); 36 private static native long createDwarfContext(long lib); 37 private static native void destroyDwarfContext(long context); 38 private native boolean isIn0(long pc); 39 40 static { 41 init0(); 42 } 43 44 public DwarfParser(Address lib) { 45 p_dwarf_context = createDwarfContext(lib.asLongValue()); 46 47 if (p_dwarf_context == 0L) { 48 throw new DebuggerException("Could not create DWARF context"); 49 } 50 51 Cleaner.create() 52 .register(this, () -> DwarfParser.destroyDwarfContext(p_dwarf_context)); 53 } 54 55 public boolean isIn(Address pc) { 56 return isIn0(pc.asLongValue()); 57 } 58 59 private native void processDwarf0(long pc); 60 61 public void processDwarf(Address pc) { 62 processDwarf0(pc.asLongValue()); 63 } 64 65 public native int getCFARegister(); 66 public native int getCFAOffset(); 67 public native int getReturnAddressOffsetFromCFA(); 68 public native int getBasePointerOffsetFromCFA(); 69 public native boolean isBPOffsetAvailable(); 70 }