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.simpleArch == "x64" | vm.simpleArch == "sparcv9" | vm.simpleArch == "aarch64")
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 *
33 * @build jdk.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper
34 * jdk.vm.ci/jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject
35 * sun.hotspot.WhiteBox
36 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
37 * sun.hotspot.WhiteBox$WhiteBoxPermission
38 * @run main/othervm -Xbootclasspath/a:.
39 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
40 * -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
41 * compiler.jvmci.compilerToVM.GetResolvedJavaMethodTest
42 */
43
44 package compiler.jvmci.compilerToVM;
45
46 import jdk.internal.misc.Unsafe;
47 import jdk.test.lib.Asserts;
48 import jdk.test.lib.unsafe.UnsafeHelper;
49 import jdk.vm.ci.hotspot.CompilerToVMHelper;
50 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
51 import jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject;
52 import sun.hotspot.WhiteBox;
53
54 import java.lang.reflect.Field;
55
56 public class GetResolvedJavaMethodTest {
57 private static enum TestCase {
58 NULL_BASE {
59 @Override
60 HotSpotResolvedJavaMethod getResolvedJavaMethod() {
61 return CompilerToVMHelper.getResolvedJavaMethod(
62 null, getPtrToMethod());
63 }
64 },
65 JAVA_METHOD_BASE {
66 @Override
67 HotSpotResolvedJavaMethod getResolvedJavaMethod() {
68 HotSpotResolvedJavaMethod methodInstance
69 = CompilerToVMHelper.getResolvedJavaMethodAtSlot(
70 TEST_CLASS, 0);
71 try {
72 METASPACE_METHOD_FIELD.set(methodInstance,
73 getPtrToMethod());
74 } catch (ReflectiveOperationException e) {
75 throw new Error("TEST BUG : " + e, e);
76 }
77 return CompilerToVMHelper.getResolvedJavaMethod(
78 methodInstance, 0L);
79 }
80 },
81 JAVA_METHOD_BASE_IN_TWO {
82 @Override
83 HotSpotResolvedJavaMethod getResolvedJavaMethod() {
84 long ptr = getPtrToMethod();
85 HotSpotResolvedJavaMethod methodInstance
86 = CompilerToVMHelper.getResolvedJavaMethodAtSlot(
87 TEST_CLASS, 0);
88 try {
89 METASPACE_METHOD_FIELD.set(methodInstance, ptr / 2L);
90 } catch (ReflectiveOperationException e) {
91 throw new Error("TESTBUG : " + e, e);
92 }
93 return CompilerToVMHelper.getResolvedJavaMethod(methodInstance,
94 ptr - ptr / 2L);
95 }
96 },
97 JAVA_METHOD_BASE_ZERO {
98 @Override
99 HotSpotResolvedJavaMethod getResolvedJavaMethod() {
100 long ptr = getPtrToMethod();
101 HotSpotResolvedJavaMethod methodInstance
102 = CompilerToVMHelper.getResolvedJavaMethodAtSlot(
103 TEST_CLASS, 0);
104 try {
105 METASPACE_METHOD_FIELD.set(methodInstance, 0L);
106 } catch (ReflectiveOperationException e) {
107 throw new Error("TESTBUG : " + e, e);
108 }
109 return CompilerToVMHelper.getResolvedJavaMethod(methodInstance,
110 ptr);
111 }
112 }
113 ;
114 abstract HotSpotResolvedJavaMethod getResolvedJavaMethod();
115 }
116
117 private static final Unsafe UNSAFE = UnsafeHelper.getUnsafe();
118 private static final WhiteBox WB = WhiteBox.getWhiteBox();
119 private static final Field METASPACE_METHOD_FIELD;
120 private static final Class<?> TEST_CLASS = GetResolvedJavaMethodTest.class;
121 private static final long PTR;
122 static {
123 HotSpotResolvedJavaMethod method
124 = CompilerToVMHelper.getResolvedJavaMethodAtSlot(TEST_CLASS, 0);
125 try {
126 // jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl.metaspaceMethod
127 METASPACE_METHOD_FIELD = method.getClass()
128 .getDeclaredField("metaspaceMethod");
129 METASPACE_METHOD_FIELD.setAccessible(true);
130 PTR = (long) METASPACE_METHOD_FIELD.get(method);
131 } catch (ReflectiveOperationException e) {
132 throw new Error("TESTBUG : " + e, e);
133 }
134
135 }
136
137 private static long getPtrToMethod() {
138 Field field;
139 try {
140 field = TEST_CLASS.getDeclaredField("PTR");
141 } catch (NoSuchFieldException e) {
142 throw new Error("TEST BUG : " + e, e);
143 }
144 Object base = UNSAFE.staticFieldBase(field);
145 return WB.getObjectAddress(base) + UNSAFE.staticFieldOffset(field);
146 }
147
148 public void test(TestCase testCase) {
149 System.out.println(testCase.name());
150 HotSpotResolvedJavaMethod result = testCase.getResolvedJavaMethod();
151 Asserts.assertNotNull(result, testCase + " : got null");
152 Asserts.assertEQ(TEST_CLASS,
153 CompilerToVMHelper.getMirror(result.getDeclaringClass()),
154 testCase + " : unexpected declaring class");
155 }
156
157 public static void main(String[] args) {
158 GetResolvedJavaMethodTest test = new GetResolvedJavaMethodTest();
159 for (TestCase testCase : TestCase.values()) {
160 test.test(testCase);
161 }
162 testObjectBase();
163 testMetaspaceWrapperBase();
164 }
165
166 private static void testMetaspaceWrapperBase() {
167 try {
168 HotSpotResolvedJavaMethod method
169 = CompilerToVMHelper.getResolvedJavaMethod(
170 new PublicMetaspaceWrapperObject() {
171 @Override
172 public long getMetaspacePointer() {
173 return getPtrToMethod();
174 }
175 }, 0L);
176 throw new AssertionError("Test METASPACE_WRAPPER_BASE."
177 + " Expected IllegalArgumentException has not been caught");
178 } catch (IllegalArgumentException e) {
179 // expected
180 }
181 }
182
183 private static void testObjectBase() {
184 try {
185 HotSpotResolvedJavaMethod method
186 = CompilerToVMHelper.getResolvedJavaMethod(new Object(), 0L);
187 throw new AssertionError("Test OBJECT_BASE."
188 + " Expected IllegalArgumentException has not been caught");
189 } catch (IllegalArgumentException e) {
190 // expected
191 }
192 }
193 }