1 /*
2 * Copyright (c) 2015, 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 /*
25 * @test
26 * @bug 8136421
27 * @requires vm.jvmci
28 * @library / /test/lib
29 * @library ../common/patches
30 * @modules java.base/jdk.internal.misc
31 * @modules jdk.vm.ci/jdk.vm.ci.hotspot
32 * jdk.vm.ci/jdk.vm.ci.meta
33 *
34 * @build jdk.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper
35 * jdk.vm.ci/jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject
36 * sun.hotspot.WhiteBox
37 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
38 * sun.hotspot.WhiteBox$WhiteBoxPermission
39 * @run main/othervm -Xbootclasspath/a:.
40 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
41 * -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
42 * -XX:+UseCompressedOops
43 * compiler.jvmci.compilerToVM.GetResolvedJavaTypeTest
44 * @run main/othervm -Xbootclasspath/a:.
45 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
46 * -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
47 * -XX:-UseCompressedOops
48 * compiler.jvmci.compilerToVM.GetResolvedJavaTypeTest
49 */
50
51 package compiler.jvmci.compilerToVM;
52
53 import jdk.internal.misc.Unsafe;
54 import jdk.test.lib.Asserts;
55 import jdk.vm.ci.hotspot.CompilerToVMHelper;
56 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
57 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType;
58 import jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject;
59 import jdk.vm.ci.meta.ConstantPool;
60 import sun.hotspot.WhiteBox;
61
62 import java.lang.reflect.Field;
63
64 public class GetResolvedJavaTypeTest {
65 private static enum TestCase {
66 NULL_BASE {
67 @Override
68 HotSpotResolvedObjectType getResolvedJavaType() {
69 return CompilerToVMHelper.getResolvedJavaType(
70 null, getPtrToKlass(), COMPRESSED);
71 }
72 },
73 JAVA_METHOD_BASE {
74 @Override
75 HotSpotResolvedObjectType getResolvedJavaType() {
76 HotSpotResolvedJavaMethod methodInstance
77 = CompilerToVMHelper.getResolvedJavaMethodAtSlot(
78 TEST_CLASS, 0);
79 Field field;
80 try {
81 // jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl.metaspaceMethod
82 field = methodInstance.getClass()
83 .getDeclaredField("metaspaceMethod");
84 field.setAccessible(true);
85 field.set(methodInstance, getPtrToKlass());
86 } catch (ReflectiveOperationException e) {
87 throw new Error("TEST BUG : " + e, e);
88 }
89
90 return CompilerToVMHelper.getResolvedJavaType(methodInstance,
91 0L, COMPRESSED);
92 }
93 },
94 CONSTANT_POOL_BASE {
95 @Override
96 HotSpotResolvedObjectType getResolvedJavaType() {
97 ConstantPool cpInst;
98 try {
99 cpInst = CompilerToVMHelper.getConstantPool(null,
100 getPtrToKlass());
101 // jdk.vm.ci.hotspot.HotSpotConstantPool.metaspaceConstantPool
102 Field field = cpInst.getClass()
103 .getDeclaredField("metaspaceConstantPool");
104 field.setAccessible(true);
105 field.set(cpInst, getPtrToKlass());
106 } catch (ReflectiveOperationException e) {
107 throw new Error("TESTBUG : " + e, e);
108 }
109 return CompilerToVMHelper.getResolvedJavaType(cpInst,
110 0L, COMPRESSED);
111 }
112 },
113 CONSTANT_POOL_BASE_IN_TWO {
114 @Override
115 HotSpotResolvedObjectType getResolvedJavaType() {
116 long ptr = getPtrToKlass();
117 ConstantPool cpInst = HotSpotResolvedObjectType
118 .fromObjectClass(TEST_CLASS)
119 .getConstantPool();
120 try {
121 Field field = cpInst.getClass()
122 .getDeclaredField("metaspaceConstantPool");
123 field.setAccessible(true);
124 field.set(cpInst, ptr / 2L);
125 } catch (ReflectiveOperationException e) {
126 throw new Error("TESTBUG : " + e, e);
127 }
128 return CompilerToVMHelper.getResolvedJavaType(cpInst,
129 ptr - ptr / 2L, COMPRESSED);
130 }
131 },
132 CONSTANT_POOL_BASE_ZERO {
133 @Override
134 HotSpotResolvedObjectType getResolvedJavaType() {
135 long ptr = getPtrToKlass();
136 ConstantPool cpInst = HotSpotResolvedObjectType
137 .fromObjectClass(TEST_CLASS)
138 .getConstantPool();
139 try {
140 Field field = cpInst.getClass()
141 .getDeclaredField("metaspaceConstantPool");
142 field.setAccessible(true);
143 field.set(cpInst, 0L);
144 } catch (ReflectiveOperationException e) {
145 throw new Error("TESTBUG : " + e, e);
146 }
147 return CompilerToVMHelper.getResolvedJavaType(cpInst,
148 ptr, COMPRESSED);
149 }
150 },
151 ;
152 abstract HotSpotResolvedObjectType getResolvedJavaType();
153 }
154
155 private static final Unsafe UNSAFE = Unsafe.getUnsafe();
156 private static final WhiteBox WB = WhiteBox.getWhiteBox();
157 private static final Class TEST_CLASS = GetResolvedJavaTypeTest.class;
158 /* a compressed parameter for tested method is set to false because
159 unsafe.getKlassPointer always returns uncompressed pointer */
160 private static final boolean COMPRESSED = false;
161 // = WB.getBooleanVMFlag("UseCompressedClassPointers");
162
163 private static long getPtrToKlass() {
164 Field field;
165 try {
166 field = TEST_CLASS.getDeclaredField("PTR");
167 } catch (NoSuchFieldException e) {
168 throw new Error("TEST BUG : " + e, e);
169 }
170 Object base = UNSAFE.staticFieldBase(field);
171 return WB.getObjectAddress(base) + UNSAFE.staticFieldOffset(field);
172 }
173
174 public void test(TestCase testCase) {
175 System.out.println(testCase.name());
176 HotSpotResolvedObjectType type = testCase.getResolvedJavaType();
177 Asserts.assertEQ(TEST_CLASS,
178 CompilerToVMHelper.getMirror(type),
179 testCase + " : unexpected class returned");
180 }
181
182 public static void main(String[] args) {
183 GetResolvedJavaTypeTest test = new GetResolvedJavaTypeTest();
184 for (TestCase testCase : TestCase.values()) {
185 test.test(testCase);
186 }
187 testObjectBase();
188 testMetaspaceWrapperBase();
189 }
190
191 private static void testMetaspaceWrapperBase() {
192 try {
193 HotSpotResolvedObjectType type
194 = CompilerToVMHelper.getResolvedJavaType(
195 new PublicMetaspaceWrapperObject() {
196 @Override
197 public long getMetaspacePointer() {
198 return getPtrToKlass();
199 }
200 }, 0L, COMPRESSED);
201 throw new AssertionError("Test METASPACE_WRAPPER_BASE."
202 + " Expected IllegalArgumentException has not been caught");
203 } catch (IllegalArgumentException iae) {
204 // expected
205 }
206 }
207
208 private static void testObjectBase() {
209 try {
210 HotSpotResolvedObjectType type
211 = CompilerToVMHelper.getResolvedJavaType(new Object(), 0L,
212 COMPRESSED);
213 throw new AssertionError("Test OBJECT_BASE."
214 + " Expected IllegalArgumentException has not been caught");
215 } catch (IllegalArgumentException iae) {
216 // expected
217 }
218 }
219 }