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 jdk.internal.misc.Unsafe;
27 import jdk.vm.ci.hotspot.HotSpotConstantReflectionProvider;
28 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntimeProvider;
29 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType;
30 import jdk.vm.ci.hotspot.HotSpotVMConfigAccess;
31 import jdk.vm.ci.meta.Constant;
32 import jdk.vm.ci.meta.JavaConstant;
33 import jdk.vm.ci.meta.JavaKind;
34 import jdk.vm.ci.runtime.JVMCI;
35 import org.testng.annotations.DataProvider;
36
37 import java.lang.reflect.Field;
38
39 public class MemoryAccessProviderData {
40 private static final Unsafe UNSAFE = getUnsafe();
41 private static final HotSpotConstantReflectionProvider CONSTANT_REFLECTION = (HotSpotConstantReflectionProvider) JVMCI.getRuntime().getHostJVMCIBackend().getConstantReflection();
42 private static final TestClass TEST_OBJECT = new TestClass();
43 private static final JavaConstant TEST_CONSTANT = CONSTANT_REFLECTION.forObject(TEST_OBJECT);
44 private static final JavaConstant TEST_CLASS_CONSTANT = CONSTANT_REFLECTION.forObject(TestClass.class);
45
46 private static Unsafe getUnsafe() {
47 try {
48 Field f = Unsafe.class.getDeclaredField("theUnsafe");
49 f.setAccessible(true);
50 return (Unsafe) f.get(null);
51 } catch (NoSuchFieldException | IllegalAccessException e) {
52 throw new RuntimeException("Unable to get Unsafe instance.", e);
53 }
54 }
55
56 @DataProvider(name = "positiveObject")
57 public static Object[][] getPositiveObjectJavaKind() {
58 HotSpotJVMCIRuntimeProvider runtime = (HotSpotJVMCIRuntimeProvider) JVMCI.getRuntime();
59 int offset = new HotSpotVMConfigAccess(runtime.getConfigStore()).getFieldOffset("Klass::_java_mirror", Integer.class, "oop");
60 Constant wrappedKlassPointer = ((HotSpotResolvedObjectType) runtime.fromClass(TestClass.class)).klass();
61 return new Object[][]{new Object[]{JavaKind.Object, wrappedKlassPointer, (long) offset, TEST_CLASS_CONSTANT, 0}};
62 }
63
64 @DataProvider(name = "positivePrimitive")
65 public static Object[][] getPositivePrimitiveJavaKinds() {
66 Field booleanField;
67 Field byteField;
68 Field shortField;
69 Field intField;
70 Field longField;
71 Field floatField;
72 Field doubleField;
73 Field charField;
74 try {
75 booleanField = MemoryAccessProviderData.TestClass.class.getDeclaredField("booleanField");
76 byteField = MemoryAccessProviderData.TestClass.class.getDeclaredField("byteField");
77 shortField = MemoryAccessProviderData.TestClass.class.getDeclaredField("shortField");
78 intField = MemoryAccessProviderData.TestClass.class.getDeclaredField("intField");
79 longField = MemoryAccessProviderData.TestClass.class.getDeclaredField("longField");
80 floatField = MemoryAccessProviderData.TestClass.class.getDeclaredField("floatField");
81 doubleField = MemoryAccessProviderData.TestClass.class.getDeclaredField("doubleField");
82 charField = MemoryAccessProviderData.TestClass.class.getDeclaredField("charField");
83 } catch (NoSuchFieldException e) {
84 throw new Error("TESTBUG: can't find test field " + e, e);
85 }
86 long booleanFieldOffset = UNSAFE.objectFieldOffset(booleanField);
87 long byteFieldOffset = UNSAFE.objectFieldOffset(byteField);
88 long shortFieldOffset = UNSAFE.objectFieldOffset(shortField);
89 long intFieldOffset = UNSAFE.objectFieldOffset(intField);
90 long longFieldOffset = UNSAFE.objectFieldOffset(longField);
91 long floatFieldOffset = UNSAFE.objectFieldOffset(floatField);
92 long doubleFieldOffset = UNSAFE.objectFieldOffset(doubleField);
93 long charFieldOffset = UNSAFE.objectFieldOffset(charField);
94 return new Object[][]{
95 new Object[]{JavaKind.Boolean, TEST_CONSTANT, booleanFieldOffset,
96 JavaConstant.forBoolean(TEST_OBJECT.booleanField), 8},
97 new Object[]{JavaKind.Byte, TEST_CONSTANT, byteFieldOffset,
98 JavaConstant.forByte(TEST_OBJECT.byteField), 8},
99 new Object[]{JavaKind.Short, TEST_CONSTANT, shortFieldOffset,
100 JavaConstant.forShort(TEST_OBJECT.shortField), 16},
101 new Object[]{JavaKind.Int, TEST_CONSTANT, intFieldOffset,
102 JavaConstant.forInt(TEST_OBJECT.intField), 32},
103 new Object[]{JavaKind.Long, TEST_CONSTANT, longFieldOffset,
104 JavaConstant.forLong(TEST_OBJECT.longField), 64},
105 new Object[]{JavaKind.Float, TEST_CONSTANT, floatFieldOffset,
106 JavaConstant.forFloat(TEST_OBJECT.floatField), 32},
107 new Object[]{JavaKind.Double, TEST_CONSTANT, doubleFieldOffset,
108 JavaConstant.forDouble(TEST_OBJECT.doubleField), 64},
109 new Object[]{JavaKind.Char, TEST_CONSTANT, charFieldOffset,
110 JavaConstant.forChar(TEST_OBJECT.charField), 16}};
111 }
112
113 @DataProvider(name = "negative")
114 public static Object[][] getNegativeJavaKinds() {
115 return new Object[][]{
116 new Object[]{JavaKind.Void, JavaConstant.NULL_POINTER},
117 new Object[]{JavaKind.Illegal, JavaConstant.INT_1}};
118 }
119
120 private static class TestClass {
121 public final boolean booleanField = true;
122 public final byte byteField = 2;
123 public final short shortField = 3;
124 public final int intField = 4;
125 public final long longField = 5L;
126 public final double doubleField = 6.0d;
127 public final float floatField = 7.0f;
128 public final char charField = 'a';
129 public final String stringField = "abc";
130 }
131 }