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