1 /*
2 * Copyright (c) 2015, 2019, 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.serviceprovider.JavaVersionUtil.JAVA_SPEC;
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.ModuleSupport;
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 non-public API.
113 */
114 private static void addExports(Class<?> c) {
115 String packageName = JAVA_SPEC <= 11 ? "jdk.internal.misc" : "jdk.internal.access";
116 ModuleSupport.exportPackageTo(String.class, packageName, c);
117 ModuleSupport.exportPackageTo(String.class, "jdk.internal.reflect", c);
118 }
119
120 @Test
121 public void testGetSize() {
122 Object cp = getConstantPoolForObject();
123 test("getSize", cp);
124 }
125
126 @Test
127 public void testGetIntAt() {
128 test("getIntAt");
129 }
130
131 @Test
132 public void testGetLongAt() {
133 test("getLongAt");
134 }
135
136 @Test
137 public void testGetFloatAt() {
138 test("getFloatAt");
139 }
140
141 @Test
142 public void testGetDoubleAt() {
143 test("getDoubleAt");
144 }
145
146 private static final String PACKAGE_NAME = ConstantPoolSubstitutionsTests.class.getPackage().getName();
147 private static final String PACKAGE_NAME_INTERNAL = PACKAGE_NAME.replace('.', '/');
148
149 private static AsmLoader LOADER = new AsmLoader(ConstantPoolSubstitutionsTests.class.getClassLoader());
150
151 public static class AsmLoader extends ClassLoader {
152 Class<?> loaded;
153
154 static final String NAME = PACKAGE_NAME + ".ConstantPoolTest";
155
156 public AsmLoader(ClassLoader parent) {
157 super(parent);
158 }
159
160 @Override
161 protected Class<?> findClass(String name) throws ClassNotFoundException {
162 if (name.equals(NAME)) {
163 if (loaded != null) {
164 return loaded;
165 }
166 byte[] bytes = Gen.generateClass();
167 return (loaded = defineClass(name, bytes, 0, bytes.length));
168 } else {
169 return super.findClass(name);
170 }
171 }
172 }
173
174 static class Gen implements Opcodes {
175 // @formatter:off
176 /*
177 static class ConstantPoolTest {
178 public static int getSize(Object o) {
179 ConstantPool cp = (ConstantPool) o;
180 return cp.getSize();
181 }
182
183 public static int getIntAt(Object o) {
184 ConstantPool cp = (ConstantPool) o;
185 return cp.getIntAt(0);
186 }
187
188 public static long getLongAt(Object o) {
189 ConstantPool cp = (ConstantPool) o;
190 return cp.getLongAt(0);
191 }
192
193 public static float getFloatAt(Object o) {
194 ConstantPool cp = (ConstantPool) o;
195 return cp.getFloatAt(0);
196 }
197
198 public static double getDoubleAt(Object o) {
199 ConstantPool cp = (ConstantPool) o;
200 return cp.getDoubleAt(0);
201 }
202
203 public static String getUTF8At(Object o) {
204 ConstantPool cp = (ConstantPool) o;
205 return cp.getUTF8At(0);
206 }
207 }
208 */
209 // @formatter:on
210
211 static byte[] generateClass() {
212
213 ClassWriter cw = new ClassWriter(0);
214 MethodVisitor mv;
215
216 cw.visit(52, ACC_SUPER, PACKAGE_NAME_INTERNAL + "/ConstantPoolTest", null, "java/lang/Object", null);
217 cw.visitInnerClass(PACKAGE_NAME_INTERNAL + "/ConstantPoolTest", PACKAGE_NAME_INTERNAL + "/ConstantPoolSubstitutionsTests", "ConstantPoolTest",
218 ACC_STATIC);
219 String constantPool = JavaVersionUtil.JAVA_SPEC <= 8 ? "sun/reflect/ConstantPool" : "jdk/internal/reflect/ConstantPool";
220
221 mv = cw.visitMethod(0, "<init>", "()V", null, null);
222 mv.visitCode();
223 mv.visitVarInsn(ALOAD, 0);
224 mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
225 mv.visitInsn(RETURN);
226 mv.visitMaxs(1, 1);
227 mv.visitEnd();
228
229 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getSize", "(Ljava/lang/Object;)I", null, null);
230 mv.visitCode();
231 mv.visitVarInsn(ALOAD, 0);
232 mv.visitTypeInsn(CHECKCAST, constantPool);
233 mv.visitVarInsn(ASTORE, 1);
234 mv.visitVarInsn(ALOAD, 1);
235 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getSize", "()I", false);
236 mv.visitInsn(IRETURN);
237 mv.visitMaxs(1, 3);
238 mv.visitEnd();
239
240 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getIntAt", "(Ljava/lang/Object;)I", null, null);
241 mv.visitCode();
242 mv.visitVarInsn(ALOAD, 0);
243 mv.visitTypeInsn(CHECKCAST, constantPool);
244 mv.visitVarInsn(ASTORE, 1);
245 mv.visitVarInsn(ALOAD, 1);
246 mv.visitInsn(ICONST_0);
247 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getIntAt", "(I)I", false);
248 mv.visitInsn(IRETURN);
249 mv.visitMaxs(2, 3);
250 mv.visitEnd();
251
252 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getLongAt", "(Ljava/lang/Object;)J", null, null);
253 mv.visitCode();
254 mv.visitVarInsn(ALOAD, 0);
255 mv.visitTypeInsn(CHECKCAST, constantPool);
256 mv.visitVarInsn(ASTORE, 1);
257 mv.visitVarInsn(ALOAD, 1);
258 mv.visitInsn(ICONST_0);
259 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getLongAt", "(I)J", false);
260 mv.visitInsn(LRETURN);
261 mv.visitMaxs(2, 3);
262 mv.visitEnd();
263
264 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getFloatAt", "(Ljava/lang/Object;)F", null, null);
265 mv.visitCode();
266 mv.visitVarInsn(ALOAD, 0);
267 mv.visitTypeInsn(CHECKCAST, constantPool);
268 mv.visitVarInsn(ASTORE, 1);
269 mv.visitVarInsn(ALOAD, 1);
270 mv.visitInsn(ICONST_0);
271 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getFloatAt", "(I)F", false);
272 mv.visitInsn(FRETURN);
273 mv.visitMaxs(2, 3);
274 mv.visitEnd();
275
276 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getDoubleAt", "(Ljava/lang/Object;)D", null, null);
277 mv.visitCode();
278 mv.visitVarInsn(ALOAD, 0);
279 mv.visitTypeInsn(CHECKCAST, constantPool);
280 mv.visitVarInsn(ASTORE, 1);
281 mv.visitVarInsn(ALOAD, 1);
282 mv.visitInsn(ICONST_0);
283 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getDoubleAt", "(I)D", false);
284 mv.visitInsn(DRETURN);
285 mv.visitMaxs(2, 3);
286 mv.visitEnd();
287
288 mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "getUTF8At", "(Ljava/lang/Object;)Ljava/lang/String;", null, null);
289 mv.visitCode();
290 mv.visitVarInsn(ALOAD, 0);
291 mv.visitTypeInsn(CHECKCAST, constantPool);
292 mv.visitVarInsn(ASTORE, 1);
293 mv.visitVarInsn(ALOAD, 1);
294 mv.visitInsn(ICONST_0);
295 mv.visitMethodInsn(INVOKEVIRTUAL, constantPool, "getUTF8At", "(I)Ljava/lang/String;", false);
296 mv.visitInsn(ARETURN);
297 mv.visitMaxs(2, 3);
298 mv.visitEnd();
299 cw.visitEnd();
300
301 return cw.toByteArray();
302 }
303 }
304 }