1 /* 2 * Copyright (c) 2015, 2016, 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 * @test 26 * @bug 8136421 27 * @requires vm.jvmci 28 * @library /test/lib / 29 * @library ../common/patches 30 * @modules java.base/jdk.internal.misc 31 * @modules java.base/jdk.internal.org.objectweb.asm 32 * java.base/jdk.internal.org.objectweb.asm.tree 33 * jdk.internal.vm.ci/jdk.vm.ci.hotspot 34 * jdk.internal.vm.ci/jdk.vm.ci.code 35 * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper 36 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI 37 * compiler.jvmci.compilerToVM.GetBytecodeTest 38 */ 39 40 package compiler.jvmci.compilerToVM; 41 42 import compiler.jvmci.common.CTVMUtilities; 43 import compiler.jvmci.common.testcases.TestCase; 44 import jdk.internal.org.objectweb.asm.Opcodes; 45 import jdk.test.lib.Asserts; 46 import jdk.vm.ci.hotspot.CompilerToVMHelper; 47 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod; 48 49 import java.lang.reflect.Executable; 50 import java.lang.reflect.Modifier; 51 52 public class GetBytecodeTest { 53 54 public static void main(String[] args) { 55 TestCase.getAllExecutables() 56 .forEach(GetBytecodeTest::runSanityTest); 57 } 58 59 private static void runSanityTest(Executable aMethod) { 60 HotSpotResolvedJavaMethod method = CTVMUtilities 61 .getResolvedMethod(aMethod); 62 byte[] bytecode = CompilerToVMHelper.getBytecode(method); 63 64 int mods = aMethod.getModifiers(); 65 boolean shouldHasZeroLength = Modifier.isAbstract(mods) 66 || Modifier.isNative(mods); 67 boolean correctLength = (bytecode.length == 0 && shouldHasZeroLength) 68 || (bytecode.length > 0 && !shouldHasZeroLength); 69 70 Asserts.assertTrue(correctLength, "Bytecode of '" + aMethod + "' has " 71 + bytecode.length + " length"); 72 73 if (!shouldHasZeroLength) { 74 Asserts.assertTrue(containsReturn(bytecode), "Bytecode of '" 75 + aMethod + "' doesn't have any return statement"); 76 } 77 } 78 79 private static boolean containsReturn(byte[] bytecode) { 80 for (byte b : bytecode) { 81 // cast unsigned byte to int 82 int value = (int) b & 0x000000FF; 83 switch (value) { 84 case Opcodes.RET: 85 case Opcodes.ARETURN: 86 case Opcodes.IRETURN: 87 case Opcodes.LRETURN: 88 case Opcodes.FRETURN: 89 case Opcodes.DRETURN: 90 case Opcodes.RETURN: 91 return true; 92 } 93 } 94 return false; 95 } 96 }