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"
79 : (Java11OrEarlier ? "jdk.internal.misc" : "jdk.internal.access");
80 try {
81 Class<?> sharedSecretsClass = Class.forName(miscPackage + ".SharedSecrets");
82 Class<?> javaLangAccessClass = Class.forName(miscPackage + ".JavaLangAccess");
83 Object jla = sharedSecretsClass.getDeclaredMethod("getJavaLangAccess").invoke(null);
84 return javaLangAccessClass.getDeclaredMethod("getConstantPool", Class.class).invoke(jla, Object.class);
85 } catch (Exception e) {
86 throw new AssertionError(e);
87 }
88 }
89
90 /**
91 * Get the test methods from the generated class.
92 */
93 @Override
94 protected Method getMethod(String methodName) {
95 Class<?> cl;
96 try {
97 cl = LOADER.findClass(AsmLoader.NAME);
98 addExports(cl);
99 } catch (ClassNotFoundException e) {
100 throw new AssertionError(e);
101 }
102 return getMethod(cl, methodName);
103 }
104
105 @BeforeClass
106 public static void beforeClass() {
107 addExports(AsmLoader.class);
108 }
109
110 /**
111 * This test uses some API hidden by the JDK9 module system.
112 */
113 private static void addExports(Class<?> c) {
114 if (!Java8OrEarlier) {
115 Object javaBaseModule = JLModule.fromClass(String.class);
116 Object cModule = JLModule.fromClass(c);
117 uncheckedAddExports(javaBaseModule, "jdk.internal.reflect", cModule);
118 if (Java11OrEarlier) {
119 uncheckedAddExports(javaBaseModule, "jdk.internal.misc", cModule);
120 } else {
121 uncheckedAddExports(javaBaseModule, "jdk.internal.access", cModule);
122 }
123 }
124 }
125
126 @Test
127 public void testGetSize() {
128 Object cp = getConstantPoolForObject();
129 test("getSize", cp);
130 }
131
132 @Test
133 public void testGetIntAt() {
134 test("getIntAt");
135 }
136
137 @Test
138 public void testGetLongAt() {
139 test("getLongAt");
140 }
141
142 @Test
143 public void testGetFloatAt() {
144 test("getFloatAt");
145 }
146
147 @Test
148 public void testGetDoubleAt() {
149 test("getDoubleAt");
150 }
151
152 private static final String PACKAGE_NAME = ConstantPoolSubstitutionsTests.class.getPackage().getName();
153 private static final String PACKAGE_NAME_INTERNAL = PACKAGE_NAME.replace('.', '/');
154
155 private static AsmLoader LOADER = new AsmLoader(ConstantPoolSubstitutionsTests.class.getClassLoader());
156
157 public static class AsmLoader extends ClassLoader {
158 Class<?> loaded;
159
160 static final String NAME = PACKAGE_NAME + ".ConstantPoolTest";
161
162 public AsmLoader(ClassLoader parent) {
163 super(parent);
164 }
165
166 @Override
167 protected Class<?> findClass(String name) throws ClassNotFoundException {
168 if (name.equals(NAME)) {
169 if (loaded != null) {
170 return loaded;
171 }
172 byte[] bytes = Gen.generateClass();
173 return (loaded = defineClass(name, bytes, 0, bytes.length));
174 } else {
175 return super.findClass(name);
176 }
177 }
178 }
179
180 static class Gen implements Opcodes {
181 // @formatter:off
182 /*
183 static class ConstantPoolTest {
184 public static int getSize(Object o) {
185 ConstantPool cp = (ConstantPool) o;
186 return cp.getSize();
187 }
188
189 public static int getIntAt(Object o) {
190 ConstantPool cp = (ConstantPool) o;
191 return cp.getIntAt(0);
192 }
193
194 public static long getLongAt(Object o) {
195 ConstantPool cp = (ConstantPool) o;
196 return cp.getLongAt(0);
197 }
198
199 public static float getFloatAt(Object o) {
200 ConstantPool cp = (ConstantPool) o;
201 return cp.getFloatAt(0);
202 }
203
204 public static double getDoubleAt(Object o) {
205 ConstantPool cp = (ConstantPool) o;
206 return cp.getDoubleAt(0);
207 }
208
209 public static String getUTF8At(Object o) {
210 ConstantPool cp = (ConstantPool) o;
211 return cp.getUTF8At(0);
212 }
213 }
214 */
215 // @formatter:on
216
217 static byte[] generateClass() {
218
219 ClassWriter cw = new ClassWriter(0);
220 MethodVisitor mv;
221
222 cw.visit(52, ACC_SUPER, PACKAGE_NAME_INTERNAL + "/ConstantPoolTest", null, "java/lang/Object", null);
223 cw.visitInnerClass(PACKAGE_NAME_INTERNAL + "/ConstantPoolTest", PACKAGE_NAME_INTERNAL + "/ConstantPoolSubstitutionsTests", "ConstantPoolTest",
224 ACC_STATIC);
225 String constantPool = Java8OrEarlier ? "sun/reflect/ConstantPool" : "jdk/internal/reflect/ConstantPool";
226
227 mv = cw.visitMethod(0, "<init>", "()V", null, null);
228 mv.visitCode();
229 mv.visitVarInsn(ALOAD, 0);
230 mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
231 mv.visitInsn(RETURN);
232 mv.visitMaxs(1, 1);
233 mv.visitEnd();
234
235 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getSize", "(Ljava/lang/Object;)I", null, null);
236 mv.visitCode();
237 mv.visitVarInsn(ALOAD, 0);
238 mv.visitTypeInsn(CHECKCAST, constantPool);
239 mv.visitVarInsn(ASTORE, 1);
240 mv.visitVarInsn(ALOAD, 1);
241 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getSize", "()I", false);
242 mv.visitInsn(IRETURN);
243 mv.visitMaxs(1, 3);
244 mv.visitEnd();
245
246 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getIntAt", "(Ljava/lang/Object;)I", null, null);
247 mv.visitCode();
248 mv.visitVarInsn(ALOAD, 0);
249 mv.visitTypeInsn(CHECKCAST, constantPool);
250 mv.visitVarInsn(ASTORE, 1);
251 mv.visitVarInsn(ALOAD, 1);
252 mv.visitInsn(ICONST_0);
253 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getIntAt", "(I)I", false);
254 mv.visitInsn(IRETURN);
255 mv.visitMaxs(2, 3);
256 mv.visitEnd();
257
258 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getLongAt", "(Ljava/lang/Object;)J", null, null);
259 mv.visitCode();
260 mv.visitVarInsn(ALOAD, 0);
261 mv.visitTypeInsn(CHECKCAST, constantPool);
262 mv.visitVarInsn(ASTORE, 1);
263 mv.visitVarInsn(ALOAD, 1);
264 mv.visitInsn(ICONST_0);
265 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getLongAt", "(I)J", false);
266 mv.visitInsn(LRETURN);
267 mv.visitMaxs(2, 3);
268 mv.visitEnd();
269
270 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getFloatAt", "(Ljava/lang/Object;)F", null, null);
271 mv.visitCode();
272 mv.visitVarInsn(ALOAD, 0);
273 mv.visitTypeInsn(CHECKCAST, constantPool);
274 mv.visitVarInsn(ASTORE, 1);
275 mv.visitVarInsn(ALOAD, 1);
276 mv.visitInsn(ICONST_0);
277 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getFloatAt", "(I)F", false);
278 mv.visitInsn(FRETURN);
279 mv.visitMaxs(2, 3);
280 mv.visitEnd();
281
282 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getDoubleAt", "(Ljava/lang/Object;)D", null, null);
283 mv.visitCode();
284 mv.visitVarInsn(ALOAD, 0);
285 mv.visitTypeInsn(CHECKCAST, constantPool);
286 mv.visitVarInsn(ASTORE, 1);
287 mv.visitVarInsn(ALOAD, 1);
288 mv.visitInsn(ICONST_0);
289 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getDoubleAt", "(I)D", false);
290 mv.visitInsn(DRETURN);
291 mv.visitMaxs(2, 3);
292 mv.visitEnd();
293
294 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getUTF8At", "(Ljava/lang/Object;)Ljava/lang/String;", null, null);
295 mv.visitCode();
296 mv.visitVarInsn(ALOAD, 0);
297 mv.visitTypeInsn(CHECKCAST, constantPool);
298 mv.visitVarInsn(ASTORE, 1);
299 mv.visitVarInsn(ALOAD, 1);
300 mv.visitInsn(ICONST_0);
301 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getUTF8At", "(I)Ljava/lang/String;", false);
302 mv.visitInsn(ARETURN);
303 mv.visitMaxs(2, 3);
304 mv.visitEnd();
305 cw.visitEnd();
306
307 return cw.toByteArray();
308 }
309 }
310 }