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 * @test 27 * @bug 8136421 28 * @requires (vm.simpleArch == "x64" | vm.simpleArch == "sparcv9" | vm.simpleArch == "aarch64") 29 * @library /test/lib / 30 * @library ../common/patches 31 * @modules java.base/jdk.internal.misc 32 * @modules java.base/jdk.internal.org.objectweb.asm 33 * java.base/jdk.internal.org.objectweb.asm.tree 34 * jdk.vm.ci/jdk.vm.ci.hotspot 35 * jdk.vm.ci/jdk.vm.ci.code 36 * @build jdk.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper 37 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI 38 * compiler.jvmci.compilerToVM.GetBytecodeTest 39 */ 40 41 package compiler.jvmci.compilerToVM; 42 43 import compiler.jvmci.common.CTVMUtilities; 44 import compiler.jvmci.common.testcases.TestCase; 45 import jdk.internal.org.objectweb.asm.Opcodes; 46 import jdk.test.lib.Asserts; 47 import jdk.vm.ci.hotspot.CompilerToVMHelper; 48 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod; 49 50 import java.lang.reflect.Executable; 51 import java.lang.reflect.Modifier; 52 53 public class GetBytecodeTest { 54 55 public static void main(String[] args) { 56 TestCase.getAllExecutables() 57 .forEach(GetBytecodeTest::runSanityTest); 58 } 59 60 private static void runSanityTest(Executable aMethod) { 61 HotSpotResolvedJavaMethod method = CTVMUtilities 62 .getResolvedMethod(aMethod); 63 byte[] bytecode = CompilerToVMHelper.getBytecode(method); 64 65 int mods = aMethod.getModifiers(); 66 boolean shouldHasZeroLength = Modifier.isAbstract(mods) 67 || Modifier.isNative(mods); 68 boolean correctLength = (bytecode.length == 0 && shouldHasZeroLength) 69 || (bytecode.length > 0 && !shouldHasZeroLength); 70 71 Asserts.assertTrue(correctLength, "Bytecode of '" + aMethod + "' has " 72 + bytecode.length + " length"); 73 74 if (!shouldHasZeroLength) { 75 Asserts.assertTrue(containsReturn(bytecode), "Bytecode of '" 76 + aMethod + "' doesn't have any return statement"); 77 } 78 } 79 80 private static boolean containsReturn(byte[] bytecode) { 81 for (byte b : bytecode) { 82 // cast unsigned byte to int 83 int value = (int) b & 0x000000FF; 84 switch (value) { 85 case Opcodes.RET: 86 case Opcodes.ARETURN: 87 case Opcodes.IRETURN: 88 case Opcodes.LRETURN: 89 case Opcodes.FRETURN: 90 case Opcodes.DRETURN: 91 case Opcodes.RETURN: 92 return true; 93 } 94 } 95 return false; 96 } 97 }