1 /* 2 * Copyright (c) 2016, 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 jdk.vm.ci.hotspot.test; 25 26 import java.lang.reflect.Field; 27 28 import org.testng.annotations.DataProvider; 29 30 import jdk.internal.misc.Unsafe; 31 import jdk.vm.ci.hotspot.HotSpotConstantReflectionProvider; 32 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntimeProvider; 33 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType; 34 import jdk.vm.ci.hotspot.HotSpotVMConfigAccess; 35 import jdk.vm.ci.meta.Constant; 36 import jdk.vm.ci.meta.JavaConstant; 37 import jdk.vm.ci.meta.JavaKind; 38 import jdk.vm.ci.runtime.JVMCI; 39 40 public class MemoryAccessProviderData { 41 private static final Unsafe UNSAFE = Unsafe.getUnsafe(); 42 private static final HotSpotConstantReflectionProvider CONSTANT_REFLECTION = (HotSpotConstantReflectionProvider) JVMCI.getRuntime().getHostJVMCIBackend().getConstantReflection(); 43 private static final TestClass TEST_OBJECT = new TestClass(); 44 private static final JavaConstant TEST_CONSTANT = CONSTANT_REFLECTION.forObject(TEST_OBJECT); 45 private static final JavaConstant TEST_CLASS_CONSTANT = CONSTANT_REFLECTION.forObject(TestClass.class); 46 47 @DataProvider(name = "positiveObject") 48 public static Object[][] getPositiveObjectJavaKind() { 49 HotSpotJVMCIRuntimeProvider runtime = (HotSpotJVMCIRuntimeProvider) JVMCI.getRuntime(); 50 int offset = new HotSpotVMConfigAccess(runtime.getConfigStore()).getFieldOffset("Klass::_java_mirror", Integer.class, "oop"); 51 Constant wrappedKlassPointer = ((HotSpotResolvedObjectType) runtime.fromClass(TestClass.class)).klass(); 52 return new Object[][]{new Object[]{JavaKind.Object, wrappedKlassPointer, (long) offset, TEST_CLASS_CONSTANT, 0}}; 53 } 54 55 @DataProvider(name = "positivePrimitive") 56 public static Object[][] getPositivePrimitiveJavaKinds() { 57 Field booleanField; 58 Field byteField; 59 Field shortField; 60 Field intField; 61 Field longField; 62 Field floatField; 63 Field doubleField; 64 Field charField; 65 try { 66 booleanField = MemoryAccessProviderData.TestClass.class.getDeclaredField("booleanField"); 67 byteField = MemoryAccessProviderData.TestClass.class.getDeclaredField("byteField"); 68 shortField = MemoryAccessProviderData.TestClass.class.getDeclaredField("shortField"); 69 intField = MemoryAccessProviderData.TestClass.class.getDeclaredField("intField"); 70 longField = MemoryAccessProviderData.TestClass.class.getDeclaredField("longField"); 71 floatField = MemoryAccessProviderData.TestClass.class.getDeclaredField("floatField"); 72 doubleField = MemoryAccessProviderData.TestClass.class.getDeclaredField("doubleField"); 73 charField = MemoryAccessProviderData.TestClass.class.getDeclaredField("charField"); 74 } catch (NoSuchFieldException e) { 75 throw new Error("TESTBUG: can't find test field " + e, e); 76 } 77 long booleanFieldOffset = UNSAFE.objectFieldOffset(booleanField); 78 long byteFieldOffset = UNSAFE.objectFieldOffset(byteField); 79 long shortFieldOffset = UNSAFE.objectFieldOffset(shortField); 80 long intFieldOffset = UNSAFE.objectFieldOffset(intField); 81 long longFieldOffset = UNSAFE.objectFieldOffset(longField); 82 long floatFieldOffset = UNSAFE.objectFieldOffset(floatField); 83 long doubleFieldOffset = UNSAFE.objectFieldOffset(doubleField); 84 long charFieldOffset = UNSAFE.objectFieldOffset(charField); 85 return new Object[][]{ 86 new Object[]{JavaKind.Boolean, TEST_CONSTANT, booleanFieldOffset, 87 JavaConstant.forBoolean(TEST_OBJECT.booleanField), 8}, 88 new Object[]{JavaKind.Byte, TEST_CONSTANT, byteFieldOffset, 89 JavaConstant.forByte(TEST_OBJECT.byteField), 8}, 90 new Object[]{JavaKind.Short, TEST_CONSTANT, shortFieldOffset, 91 JavaConstant.forShort(TEST_OBJECT.shortField), 16}, 92 new Object[]{JavaKind.Int, TEST_CONSTANT, intFieldOffset, 93 JavaConstant.forInt(TEST_OBJECT.intField), 32}, 94 new Object[]{JavaKind.Long, TEST_CONSTANT, longFieldOffset, 95 JavaConstant.forLong(TEST_OBJECT.longField), 64}, 96 new Object[]{JavaKind.Float, TEST_CONSTANT, floatFieldOffset, 97 JavaConstant.forFloat(TEST_OBJECT.floatField), 32}, 98 new Object[]{JavaKind.Double, TEST_CONSTANT, doubleFieldOffset, 99 JavaConstant.forDouble(TEST_OBJECT.doubleField), 64}, 100 new Object[]{JavaKind.Char, TEST_CONSTANT, charFieldOffset, 101 JavaConstant.forChar(TEST_OBJECT.charField), 16}}; 102 } 103 104 @DataProvider(name = "negative") 105 public static Object[][] getNegativeJavaKinds() { 106 return new Object[][]{ 107 new Object[]{JavaKind.Void, JavaConstant.NULL_POINTER}, 108 new Object[]{JavaKind.Illegal, JavaConstant.INT_1}}; 109 } 110 111 private static class TestClass { 112 public final boolean booleanField = true; 113 public final byte byteField = 2; 114 public final short shortField = 3; 115 public final int intField = 4; 116 public final long longField = 5L; 117 public final double doubleField = 6.0d; 118 public final float floatField = 7.0f; 119 public final char charField = 'a'; 120 public final String stringField = "abc"; 121 } 122 }