1 /* 2 * Copyright (c) 2015, 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 package compiler.jvmci.common; 25 26 import java.lang.reflect.Field; 27 import java.lang.reflect.Executable; 28 import java.lang.reflect.Constructor; 29 import java.lang.reflect.Method; 30 import jdk.vm.ci.code.InstalledCode; 31 import jdk.vm.ci.hotspot.CompilerToVMHelper; 32 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod; 33 34 public class CTVMUtilities { 35 /* 36 * A method to return HotSpotResolvedJavaMethod object using class object 37 * and method as input 38 */ 39 public static HotSpotResolvedJavaMethod getResolvedMethod(Class<?> cls, 40 Executable method) { 41 if (!(method instanceof Method || method instanceof Constructor)) { 42 throw new Error("wrong executable type " + method.getClass()); 43 } 44 Field slotField; 45 int slot; 46 try { 47 slotField = method.getClass().getDeclaredField("slot"); 48 boolean old = slotField.isAccessible(); 49 slotField.setAccessible(true); 50 slot = slotField.getInt(method); 51 slotField.setAccessible(old); 52 } catch (ReflectiveOperationException e) { 53 throw new Error("TEST BUG: Can't get slot field", e); 54 } 55 return CompilerToVMHelper.getResolvedJavaMethodAtSlot(cls, slot); 56 } 57 58 public static HotSpotResolvedJavaMethod getResolvedMethod( 59 Executable method) { 60 return getResolvedMethod(method.getDeclaringClass(), method); 61 } 62 63 public static InstalledCode getInstalledCode(String name, long address, 64 long entryPoint) { 65 return new InstalledCodeStub(name, address, entryPoint); 66 } 67 private static class InstalledCodeStub extends InstalledCode { 68 private InstalledCodeStub(String name, long address, long entryPoint) { 69 super(name); 70 this.address = address; 71 this.entryPoint = entryPoint; 72 } 73 } 74 }