1 /*
2 * Copyright (c) 2015, 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.test.JLModule;
39 import org.junit.BeforeClass;
40 import org.junit.Test;
41 import org.objectweb.asm.ClassWriter;
42 import org.objectweb.asm.MethodVisitor;
43 import org.objectweb.asm.Opcodes;
44
45 import jdk.vm.ci.meta.ResolvedJavaMethod;
46
47 public class ConstantPoolSubstitutionsTests extends GraalCompilerTest {
48
49 public ConstantPoolSubstitutionsTests() {
50 exportPackage(JAVA_BASE, "jdk.internal.org.objectweb.asm");
51 }
52
53 @SuppressWarnings("try")
54 protected StructuredGraph test(final String snippet) {
55 ResolvedJavaMethod method = getMetaAccess().lookupJavaMethod(getMethod(snippet));
56 DebugContext debug = getDebugContext();
57 try (DebugContext.Scope s = debug.scope("ConstantPoolSubstitutionsTests", method)) {
58 StructuredGraph graph = parseEager(snippet, AllowAssumptions.YES);
59 compile(graph.method(), graph);
60 assertNotInGraph(graph, Invoke.class);
61 debug.dump(DebugContext.BASIC_LEVEL, graph, snippet);
62 return graph;
63 } catch (Throwable e) {
64 throw debug.handle(e);
65 }
66 }
67
68 protected static StructuredGraph assertNotInGraph(StructuredGraph graph, Class<?> clazz) {
69 for (Node node : graph.getNodes()) {
70 if (clazz.isInstance(node)) {
71 fail(node.toString());
72 }
73 }
74 return graph;
75 }
76
77 private static Object getConstantPoolForObject() {
78 String miscPackage = Java8OrEarlier ? "sun.misc" : "jdk.internal.misc";
79 try {
80 Class<?> sharedSecretsClass = Class.forName(miscPackage + ".SharedSecrets");
81 Class<?> javaLangAccessClass = Class.forName(miscPackage + ".JavaLangAccess");
82 Object jla = sharedSecretsClass.getDeclaredMethod("getJavaLangAccess").invoke(null);
83 return javaLangAccessClass.getDeclaredMethod("getConstantPool", Class.class).invoke(jla, Object.class);
84 } catch (Exception e) {
85 throw new AssertionError(e);
86 }
87 }
88
89 /**
90 * Get the test methods from the generated class.
91 */
92 @Override
93 protected Method getMethod(String methodName) {
94 Class<?> cl;
95 try {
96 cl = LOADER.findClass(AsmLoader.NAME);
97 addExports(cl);
98 } catch (ClassNotFoundException e) {
99 throw new AssertionError(e);
100 }
101 return getMethod(cl, methodName);
102 }
103
104 @BeforeClass
105 public static void beforeClass() {
106 addExports(AsmLoader.class);
107 }
108
109 /**
110 * This test uses some API hidden by the JDK9 module system.
111 */
112 private static void addExports(Class<?> c) {
113 if (!Java8OrEarlier) {
114 Object javaBaseModule = JLModule.fromClass(String.class);
115 Object cModule = JLModule.fromClass(c);
116 uncheckedAddExports(javaBaseModule, "jdk.internal.reflect", cModule);
117 uncheckedAddExports(javaBaseModule, "jdk.internal.misc", cModule);
118 }
119 }
120
121 @Test
122 public void testGetSize() {
123 Object cp = getConstantPoolForObject();
124 test("getSize", cp);
125 }
126
127 @Test
128 public void testGetIntAt() {
129 test("getIntAt");
130 }
131
132 @Test
133 public void testGetLongAt() {
134 test("getLongAt");
135 }
136
137 @Test
138 public void testGetFloatAt() {
139 test("getFloatAt");
140 }
141
142 @Test
143 public void testGetDoubleAt() {
144 test("getDoubleAt");
145 }
146
147 private static final String PACKAGE_NAME = ConstantPoolSubstitutionsTests.class.getPackage().getName();
148 private static final String PACKAGE_NAME_INTERNAL = PACKAGE_NAME.replace('.', '/');
149
150 private static AsmLoader LOADER = new AsmLoader(ConstantPoolSubstitutionsTests.class.getClassLoader());
151
152 public static class AsmLoader extends ClassLoader {
153 Class<?> loaded;
154
155 static final String NAME = PACKAGE_NAME + ".ConstantPoolTest";
156
157 public AsmLoader(ClassLoader parent) {
158 super(parent);
159 }
160
161 @Override
162 protected Class<?> findClass(String name) throws ClassNotFoundException {
163 if (name.equals(NAME)) {
164 if (loaded != null) {
165 return loaded;
166 }
167 byte[] bytes = Gen.generateClass();
168 return (loaded = defineClass(name, bytes, 0, bytes.length));
169 } else {
170 return super.findClass(name);
171 }
172 }
173 }
174
175 static class Gen implements Opcodes {
176 // @formatter:off
177 /*
178 static class ConstantPoolTest {
179 public static int getSize(Object o) {
180 ConstantPool cp = (ConstantPool) o;
181 return cp.getSize();
182 }
183
184 public static int getIntAt(Object o) {
185 ConstantPool cp = (ConstantPool) o;
186 return cp.getIntAt(0);
187 }
188
189 public static long getLongAt(Object o) {
190 ConstantPool cp = (ConstantPool) o;
191 return cp.getLongAt(0);
192 }
193
194 public static float getFloatAt(Object o) {
195 ConstantPool cp = (ConstantPool) o;
196 return cp.getFloatAt(0);
197 }
198
199 public static double getDoubleAt(Object o) {
200 ConstantPool cp = (ConstantPool) o;
201 return cp.getDoubleAt(0);
202 }
203
204 public static String getUTF8At(Object o) {
205 ConstantPool cp = (ConstantPool) o;
206 return cp.getUTF8At(0);
207 }
208 }
209 */
210 // @formatter:on
211
212 static byte[] generateClass() {
213
214 ClassWriter cw = new ClassWriter(0);
215 MethodVisitor mv;
216
217 cw.visit(52, ACC_SUPER, PACKAGE_NAME_INTERNAL + "/ConstantPoolTest", null, "java/lang/Object", null);
218 cw.visitInnerClass(PACKAGE_NAME_INTERNAL + "/ConstantPoolTest", PACKAGE_NAME_INTERNAL + "/ConstantPoolSubstitutionsTests", "ConstantPoolTest",
219 ACC_STATIC);
220 String constantPool = Java8OrEarlier ? "sun/reflect/ConstantPool" : "jdk/internal/reflect/ConstantPool";
221
222 mv = cw.visitMethod(0, "<init>", "()V", null, null);
223 mv.visitCode();
224 mv.visitVarInsn(ALOAD, 0);
225 mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
226 mv.visitInsn(RETURN);
227 mv.visitMaxs(1, 1);
228 mv.visitEnd();
229
230 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getSize", "(Ljava/lang/Object;)I", null, null);
231 mv.visitCode();
232 mv.visitVarInsn(ALOAD, 0);
233 mv.visitTypeInsn(CHECKCAST, constantPool);
234 mv.visitVarInsn(ASTORE, 1);
235 mv.visitVarInsn(ALOAD, 1);
236 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getSize", "()I", false);
237 mv.visitInsn(IRETURN);
238 mv.visitMaxs(1, 3);
239 mv.visitEnd();
240
241 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getIntAt", "(Ljava/lang/Object;)I", null, null);
242 mv.visitCode();
243 mv.visitVarInsn(ALOAD, 0);
244 mv.visitTypeInsn(CHECKCAST, constantPool);
245 mv.visitVarInsn(ASTORE, 1);
246 mv.visitVarInsn(ALOAD, 1);
247 mv.visitInsn(ICONST_0);
248 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getIntAt", "(I)I", false);
249 mv.visitInsn(IRETURN);
250 mv.visitMaxs(2, 3);
251 mv.visitEnd();
252
253 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getLongAt", "(Ljava/lang/Object;)J", null, null);
254 mv.visitCode();
255 mv.visitVarInsn(ALOAD, 0);
256 mv.visitTypeInsn(CHECKCAST, constantPool);
257 mv.visitVarInsn(ASTORE, 1);
258 mv.visitVarInsn(ALOAD, 1);
259 mv.visitInsn(ICONST_0);
260 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getLongAt", "(I)J", false);
261 mv.visitInsn(LRETURN);
262 mv.visitMaxs(2, 3);
263 mv.visitEnd();
264
265 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getFloatAt", "(Ljava/lang/Object;)F", null, null);
266 mv.visitCode();
267 mv.visitVarInsn(ALOAD, 0);
268 mv.visitTypeInsn(CHECKCAST, constantPool);
269 mv.visitVarInsn(ASTORE, 1);
270 mv.visitVarInsn(ALOAD, 1);
271 mv.visitInsn(ICONST_0);
272 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getFloatAt", "(I)F", false);
273 mv.visitInsn(FRETURN);
274 mv.visitMaxs(2, 3);
275 mv.visitEnd();
276
277 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getDoubleAt", "(Ljava/lang/Object;)D", null, null);
278 mv.visitCode();
279 mv.visitVarInsn(ALOAD, 0);
280 mv.visitTypeInsn(CHECKCAST, constantPool);
281 mv.visitVarInsn(ASTORE, 1);
282 mv.visitVarInsn(ALOAD, 1);
283 mv.visitInsn(ICONST_0);
284 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getDoubleAt", "(I)D", false);
285 mv.visitInsn(DRETURN);
286 mv.visitMaxs(2, 3);
287 mv.visitEnd();
288
289 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getUTF8At", "(Ljava/lang/Object;)Ljava/lang/String;", null, null);
290 mv.visitCode();
291 mv.visitVarInsn(ALOAD, 0);
292 mv.visitTypeInsn(CHECKCAST, constantPool);
293 mv.visitVarInsn(ASTORE, 1);
294 mv.visitVarInsn(ALOAD, 1);
295 mv.visitInsn(ICONST_0);
296 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getUTF8At", "(I)Ljava/lang/String;", false);
297 mv.visitInsn(ARETURN);
298 mv.visitMaxs(2, 3);
299 mv.visitEnd();
300 cw.visitEnd();
301
302 return cw.toByteArray();
303 }
304 }
305 }