1 /*
2 * Copyright (c) 2015, 2018, 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
26 package org.graalvm.compiler.hotspot.test;
27
28 import static org.graalvm.compiler.test.JLModule.uncheckedAddExports;
29
30 import java.lang.reflect.Method;
31
32 import org.graalvm.compiler.core.test.GraalCompilerTest;
33 import org.graalvm.compiler.debug.DebugContext;
34 import org.graalvm.compiler.graph.Node;
35 import org.graalvm.compiler.nodes.Invoke;
36 import org.graalvm.compiler.nodes.StructuredGraph;
37 import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;
38 import org.graalvm.compiler.serviceprovider.JavaVersionUtil;
39 import org.graalvm.compiler.test.JLModule;
40 import org.junit.BeforeClass;
41 import org.junit.Test;
42 import org.objectweb.asm.ClassWriter;
43 import org.objectweb.asm.MethodVisitor;
44 import org.objectweb.asm.Opcodes;
45
46 import jdk.vm.ci.meta.ResolvedJavaMethod;
47
48 public class ConstantPoolSubstitutionsTests extends GraalCompilerTest {
49
50 public ConstantPoolSubstitutionsTests() {
51 exportPackage(JAVA_BASE, "jdk.internal.org.objectweb.asm");
52 }
53
54 @SuppressWarnings("try")
55 protected StructuredGraph test(final String snippet) {
56 ResolvedJavaMethod method = getMetaAccess().lookupJavaMethod(getMethod(snippet));
57 DebugContext debug = getDebugContext();
58 try (DebugContext.Scope s = debug.scope("ConstantPoolSubstitutionsTests", method)) {
59 StructuredGraph graph = parseEager(snippet, AllowAssumptions.YES);
60 compile(graph.method(), graph);
61 assertNotInGraph(graph, Invoke.class);
62 debug.dump(DebugContext.BASIC_LEVEL, graph, snippet);
63 return graph;
64 } catch (Throwable e) {
65 throw debug.handle(e);
66 }
67 }
68
69 protected static StructuredGraph assertNotInGraph(StructuredGraph graph, Class<?> clazz) {
70 for (Node node : graph.getNodes()) {
71 if (clazz.isInstance(node)) {
72 fail(node.toString());
73 }
74 }
75 return graph;
76 }
77
78 private static Object getConstantPoolForObject() {
79 String miscPackage = JavaVersionUtil.JAVA_SPEC <= 8 ? "sun.misc"
80 : (JavaVersionUtil.JAVA_SPEC <= 11 ? "jdk.internal.misc" : "jdk.internal.access");
81 try {
82 Class<?> sharedSecretsClass = Class.forName(miscPackage + ".SharedSecrets");
83 Class<?> javaLangAccessClass = Class.forName(miscPackage + ".JavaLangAccess");
84 Object jla = sharedSecretsClass.getDeclaredMethod("getJavaLangAccess").invoke(null);
85 return javaLangAccessClass.getDeclaredMethod("getConstantPool", Class.class).invoke(jla, Object.class);
86 } catch (Exception e) {
87 throw new AssertionError(e);
88 }
89 }
90
91 /**
92 * Get the test methods from the generated class.
93 */
94 @Override
95 protected Method getMethod(String methodName) {
96 Class<?> cl;
97 try {
98 cl = LOADER.findClass(AsmLoader.NAME);
99 addExports(cl);
100 } catch (ClassNotFoundException e) {
101 throw new AssertionError(e);
102 }
103 return getMethod(cl, methodName);
104 }
105
106 @BeforeClass
107 public static void beforeClass() {
108 addExports(AsmLoader.class);
109 }
110
111 /**
112 * This test uses some API hidden by the JDK9 module system.
113 */
114 private static void addExports(Class<?> c) {
115 if (JavaVersionUtil.JAVA_SPEC > 8) {
116 Object javaBaseModule = JLModule.fromClass(String.class);
117 Object cModule = JLModule.fromClass(c);
118 uncheckedAddExports(javaBaseModule, "jdk.internal.reflect", cModule);
119 if (JavaVersionUtil.JAVA_SPEC <= 11) {
120 uncheckedAddExports(javaBaseModule, "jdk.internal.misc", cModule);
121 } else {
122 uncheckedAddExports(javaBaseModule, "jdk.internal.access", cModule);
123 }
124 }
125 }
126
127 @Test
128 public void testGetSize() {
129 Object cp = getConstantPoolForObject();
130 test("getSize", cp);
131 }
132
133 @Test
134 public void testGetIntAt() {
135 test("getIntAt");
136 }
137
138 @Test
139 public void testGetLongAt() {
140 test("getLongAt");
141 }
142
143 @Test
144 public void testGetFloatAt() {
145 test("getFloatAt");
146 }
147
148 @Test
149 public void testGetDoubleAt() {
150 test("getDoubleAt");
151 }
152
153 private static final String PACKAGE_NAME = ConstantPoolSubstitutionsTests.class.getPackage().getName();
154 private static final String PACKAGE_NAME_INTERNAL = PACKAGE_NAME.replace('.', '/');
155
156 private static AsmLoader LOADER = new AsmLoader(ConstantPoolSubstitutionsTests.class.getClassLoader());
157
158 public static class AsmLoader extends ClassLoader {
159 Class<?> loaded;
160
161 static final String NAME = PACKAGE_NAME + ".ConstantPoolTest";
162
163 public AsmLoader(ClassLoader parent) {
164 super(parent);
165 }
166
167 @Override
168 protected Class<?> findClass(String name) throws ClassNotFoundException {
169 if (name.equals(NAME)) {
170 if (loaded != null) {
171 return loaded;
172 }
173 byte[] bytes = Gen.generateClass();
174 return (loaded = defineClass(name, bytes, 0, bytes.length));
175 } else {
176 return super.findClass(name);
177 }
178 }
179 }
180
181 static class Gen implements Opcodes {
182 // @formatter:off
183 /*
184 static class ConstantPoolTest {
185 public static int getSize(Object o) {
186 ConstantPool cp = (ConstantPool) o;
187 return cp.getSize();
188 }
189
190 public static int getIntAt(Object o) {
191 ConstantPool cp = (ConstantPool) o;
192 return cp.getIntAt(0);
193 }
194
195 public static long getLongAt(Object o) {
196 ConstantPool cp = (ConstantPool) o;
197 return cp.getLongAt(0);
198 }
199
200 public static float getFloatAt(Object o) {
201 ConstantPool cp = (ConstantPool) o;
202 return cp.getFloatAt(0);
203 }
204
205 public static double getDoubleAt(Object o) {
206 ConstantPool cp = (ConstantPool) o;
207 return cp.getDoubleAt(0);
208 }
209
210 public static String getUTF8At(Object o) {
211 ConstantPool cp = (ConstantPool) o;
212 return cp.getUTF8At(0);
213 }
214 }
215 */
216 // @formatter:on
217
218 static byte[] generateClass() {
219
220 ClassWriter cw = new ClassWriter(0);
221 MethodVisitor mv;
222
223 cw.visit(52, ACC_SUPER, PACKAGE_NAME_INTERNAL + "/ConstantPoolTest", null, "java/lang/Object", null);
224 cw.visitInnerClass(PACKAGE_NAME_INTERNAL + "/ConstantPoolTest", PACKAGE_NAME_INTERNAL + "/ConstantPoolSubstitutionsTests", "ConstantPoolTest",
225 ACC_STATIC);
226 String constantPool = JavaVersionUtil.JAVA_SPEC <= 8 ? "sun/reflect/ConstantPool" : "jdk/internal/reflect/ConstantPool";
227
228 mv = cw.visitMethod(0, "<init>", "()V", null, null);
229 mv.visitCode();
230 mv.visitVarInsn(ALOAD, 0);
231 mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
232 mv.visitInsn(RETURN);
233 mv.visitMaxs(1, 1);
234 mv.visitEnd();
235
236 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getSize", "(Ljava/lang/Object;)I", null, null);
237 mv.visitCode();
238 mv.visitVarInsn(ALOAD, 0);
239 mv.visitTypeInsn(CHECKCAST, constantPool);
240 mv.visitVarInsn(ASTORE, 1);
241 mv.visitVarInsn(ALOAD, 1);
242 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getSize", "()I", false);
243 mv.visitInsn(IRETURN);
244 mv.visitMaxs(1, 3);
245 mv.visitEnd();
246
247 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getIntAt", "(Ljava/lang/Object;)I", null, null);
248 mv.visitCode();
249 mv.visitVarInsn(ALOAD, 0);
250 mv.visitTypeInsn(CHECKCAST, constantPool);
251 mv.visitVarInsn(ASTORE, 1);
252 mv.visitVarInsn(ALOAD, 1);
253 mv.visitInsn(ICONST_0);
254 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getIntAt", "(I)I", false);
255 mv.visitInsn(IRETURN);
256 mv.visitMaxs(2, 3);
257 mv.visitEnd();
258
259 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getLongAt", "(Ljava/lang/Object;)J", null, null);
260 mv.visitCode();
261 mv.visitVarInsn(ALOAD, 0);
262 mv.visitTypeInsn(CHECKCAST, constantPool);
263 mv.visitVarInsn(ASTORE, 1);
264 mv.visitVarInsn(ALOAD, 1);
265 mv.visitInsn(ICONST_0);
266 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getLongAt", "(I)J", false);
267 mv.visitInsn(LRETURN);
268 mv.visitMaxs(2, 3);
269 mv.visitEnd();
270
271 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getFloatAt", "(Ljava/lang/Object;)F", null, null);
272 mv.visitCode();
273 mv.visitVarInsn(ALOAD, 0);
274 mv.visitTypeInsn(CHECKCAST, constantPool);
275 mv.visitVarInsn(ASTORE, 1);
276 mv.visitVarInsn(ALOAD, 1);
277 mv.visitInsn(ICONST_0);
278 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getFloatAt", "(I)F", false);
279 mv.visitInsn(FRETURN);
280 mv.visitMaxs(2, 3);
281 mv.visitEnd();
282
283 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getDoubleAt", "(Ljava/lang/Object;)D", null, null);
284 mv.visitCode();
285 mv.visitVarInsn(ALOAD, 0);
286 mv.visitTypeInsn(CHECKCAST, constantPool);
287 mv.visitVarInsn(ASTORE, 1);
288 mv.visitVarInsn(ALOAD, 1);
289 mv.visitInsn(ICONST_0);
290 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getDoubleAt", "(I)D", false);
291 mv.visitInsn(DRETURN);
292 mv.visitMaxs(2, 3);
293 mv.visitEnd();
294
295 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getUTF8At", "(Ljava/lang/Object;)Ljava/lang/String;", null, null);
296 mv.visitCode();
297 mv.visitVarInsn(ALOAD, 0);
298 mv.visitTypeInsn(CHECKCAST, constantPool);
299 mv.visitVarInsn(ASTORE, 1);
300 mv.visitVarInsn(ALOAD, 1);
301 mv.visitInsn(ICONST_0);
302 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getUTF8At", "(I)Ljava/lang/String;", false);
303 mv.visitInsn(ARETURN);
304 mv.visitMaxs(2, 3);
305 mv.visitEnd();
306 cw.visitEnd();
307
308 return cw.toByteArray();
309 }
310 }
311 }