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.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 @Test
126 public void testGetSize() {
127 Object cp = getConstantPoolForObject();
128 test("getSize", cp);
129 }
130
131 @Test
132 public void testGetIntAt() {
133 test("getIntAt");
134 }
135
136 @Test
137 public void testGetLongAt() {
138 test("getLongAt");
139 }
140
141 @Test
142 public void testGetFloatAt() {
143 test("getFloatAt");
144 }
145
146 @Test
147 public void testGetDoubleAt() {
148 test("getDoubleAt");
149 }
150
151 private static final String PACKAGE_NAME = ConstantPoolSubstitutionsTests.class.getPackage().getName();
152 private static final String PACKAGE_NAME_INTERNAL = PACKAGE_NAME.replace('.', '/');
153
154 private static AsmLoader LOADER = new AsmLoader(ConstantPoolSubstitutionsTests.class.getClassLoader());
155
156 public static class AsmLoader extends ClassLoader {
157 Class<?> loaded;
158
159 static final String NAME = PACKAGE_NAME + ".ConstantPoolTest";
160
161 public AsmLoader(ClassLoader parent) {
162 super(parent);
163 }
164
165 @Override
166 protected Class<?> findClass(String name) throws ClassNotFoundException {
167 if (name.equals(NAME)) {
168 if (loaded != null) {
169 return loaded;
170 }
171 byte[] bytes = Gen.generateClass();
172 return (loaded = defineClass(name, bytes, 0, bytes.length));
173 } else {
174 return super.findClass(name);
175 }
176 }
177 }
178
179 static class Gen implements Opcodes {
180 // @formatter:off
181 /*
182 static class ConstantPoolTest {
183 public static int getSize(Object o) {
184 ConstantPool cp = (ConstantPool) o;
185 return cp.getSize();
186 }
187
188 public static int getIntAt(Object o) {
189 ConstantPool cp = (ConstantPool) o;
190 return cp.getIntAt(0);
191 }
192
193 public static long getLongAt(Object o) {
194 ConstantPool cp = (ConstantPool) o;
195 return cp.getLongAt(0);
196 }
197
198 public static float getFloatAt(Object o) {
199 ConstantPool cp = (ConstantPool) o;
200 return cp.getFloatAt(0);
201 }
202
203 public static double getDoubleAt(Object o) {
204 ConstantPool cp = (ConstantPool) o;
205 return cp.getDoubleAt(0);
206 }
207
208 public static String getUTF8At(Object o) {
209 ConstantPool cp = (ConstantPool) o;
210 return cp.getUTF8At(0);
211 }
212 }
213 */
214 // @formatter:on
215
216 static byte[] generateClass() {
217
218 ClassWriter cw = new ClassWriter(0);
219 MethodVisitor mv;
220
221 cw.visit(52, ACC_SUPER, PACKAGE_NAME_INTERNAL + "/ConstantPoolTest", null, "java/lang/Object", null);
222 cw.visitInnerClass(PACKAGE_NAME_INTERNAL + "/ConstantPoolTest", PACKAGE_NAME_INTERNAL + "/ConstantPoolSubstitutionsTests", "ConstantPoolTest",
223 ACC_STATIC);
224 String constantPool = Java8OrEarlier ? "sun/reflect/ConstantPool" : "jdk/internal/reflect/ConstantPool";
225
226 mv = cw.visitMethod(0, "<init>", "()V", null, null);
227 mv.visitCode();
228 mv.visitVarInsn(ALOAD, 0);
229 mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
230 mv.visitInsn(RETURN);
231 mv.visitMaxs(1, 1);
232 mv.visitEnd();
233
234 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getSize", "(Ljava/lang/Object;)I", null, null);
235 mv.visitCode();
236 mv.visitVarInsn(ALOAD, 0);
237 mv.visitTypeInsn(CHECKCAST, constantPool);
238 mv.visitVarInsn(ASTORE, 1);
239 mv.visitVarInsn(ALOAD, 1);
240 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getSize", "()I", false);
241 mv.visitInsn(IRETURN);
242 mv.visitMaxs(1, 3);
243 mv.visitEnd();
244
245 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getIntAt", "(Ljava/lang/Object;)I", null, null);
246 mv.visitCode();
247 mv.visitVarInsn(ALOAD, 0);
248 mv.visitTypeInsn(CHECKCAST, constantPool);
249 mv.visitVarInsn(ASTORE, 1);
250 mv.visitVarInsn(ALOAD, 1);
251 mv.visitInsn(ICONST_0);
252 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getIntAt", "(I)I", false);
253 mv.visitInsn(IRETURN);
254 mv.visitMaxs(2, 3);
255 mv.visitEnd();
256
257 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getLongAt", "(Ljava/lang/Object;)J", null, null);
258 mv.visitCode();
259 mv.visitVarInsn(ALOAD, 0);
260 mv.visitTypeInsn(CHECKCAST, constantPool);
261 mv.visitVarInsn(ASTORE, 1);
262 mv.visitVarInsn(ALOAD, 1);
263 mv.visitInsn(ICONST_0);
264 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getLongAt", "(I)J", false);
265 mv.visitInsn(LRETURN);
266 mv.visitMaxs(2, 3);
267 mv.visitEnd();
268
269 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getFloatAt", "(Ljava/lang/Object;)F", null, null);
270 mv.visitCode();
271 mv.visitVarInsn(ALOAD, 0);
272 mv.visitTypeInsn(CHECKCAST, constantPool);
273 mv.visitVarInsn(ASTORE, 1);
274 mv.visitVarInsn(ALOAD, 1);
275 mv.visitInsn(ICONST_0);
276 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getFloatAt", "(I)F", false);
277 mv.visitInsn(FRETURN);
278 mv.visitMaxs(2, 3);
279 mv.visitEnd();
280
281 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getDoubleAt", "(Ljava/lang/Object;)D", null, null);
282 mv.visitCode();
283 mv.visitVarInsn(ALOAD, 0);
284 mv.visitTypeInsn(CHECKCAST, constantPool);
285 mv.visitVarInsn(ASTORE, 1);
286 mv.visitVarInsn(ALOAD, 1);
287 mv.visitInsn(ICONST_0);
288 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getDoubleAt", "(I)D", false);
289 mv.visitInsn(DRETURN);
290 mv.visitMaxs(2, 3);
291 mv.visitEnd();
292
293 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getUTF8At", "(Ljava/lang/Object;)Ljava/lang/String;", null, null);
294 mv.visitCode();
295 mv.visitVarInsn(ALOAD, 0);
296 mv.visitTypeInsn(CHECKCAST, constantPool);
297 mv.visitVarInsn(ASTORE, 1);
298 mv.visitVarInsn(ALOAD, 1);
299 mv.visitInsn(ICONST_0);
300 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getUTF8At", "(I)Ljava/lang/String;", false);
301 mv.visitInsn(ARETURN);
302 mv.visitMaxs(2, 3);
303 mv.visitEnd();
304 cw.visitEnd();
305
306 return cw.toByteArray();
307 }
308 }
309 }