1 /* 2 * Copyright (c) 2011, 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 package vm.mlvm.cp.share; 25 26 import jdk.internal.org.objectweb.asm.ClassWriter; 27 import jdk.internal.org.objectweb.asm.ClassWriterExt; 28 import jdk.internal.org.objectweb.asm.MethodVisitor; 29 import jdk.internal.org.objectweb.asm.Opcodes; 30 import jdk.internal.org.objectweb.asm.Handle; 31 32 import vm.mlvm.share.ClassfileGenerator; 33 import vm.mlvm.share.Env; 34 35 public class GenCPFullOfMH extends GenFullCP { 36 37 public static void main(String[] args) { 38 ClassfileGenerator.main(args); 39 } 40 41 @Override 42 protected void generateCommonData(ClassWriterExt cw) { 43 cw.setCacheMHandles(false); 44 45 cw.visitField(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, 46 STATIC_FIELD_NAME, 47 STATIC_FIELD_SIGNATURE, null, false); 48 49 cw.visitField(Opcodes.ACC_PUBLIC, 50 INSTANCE_FIELD_NAME, 51 INSTANCE_FIELD_SIGNATURE, null, false); 52 53 createInitMethod(cw); 54 createTargetMethod(cw); 55 56 MethodVisitor mv = cw.visitMethod( 57 Opcodes.ACC_PUBLIC, 58 INSTANCE_TARGET_METHOD_NAME, 59 INSTANCE_TARGET_METHOD_SIGNATURE, 60 null, 61 new String[0]); 62 finishMethodCode(mv); 63 } 64 65 @Override 66 protected void generateCPEntryData(ClassWriter cw, MethodVisitor mw) { 67 HandleType[] types = HandleType.values(); 68 HandleType type = types[Env.getRNG().nextInt(types.length)]; 69 70 switch (type) { 71 case PUTFIELD: 72 case PUTSTATIC: 73 mw.visitInsn(Opcodes.ICONST_0); 74 break; 75 case INVOKESPECIAL: 76 case INVOKEVIRTUAL: 77 case INVOKEINTERFACE: 78 mw.visitInsn(Opcodes.ACONST_NULL); 79 break; 80 } 81 82 Handle handle; 83 switch (type) { 84 case GETFIELD: 85 case PUTFIELD: 86 handle = new Handle(type.asmTag, 87 fullClassName, 88 INSTANCE_FIELD_NAME, 89 INSTANCE_FIELD_SIGNATURE); 90 break; 91 case GETSTATIC: 92 case PUTSTATIC: 93 handle = new Handle(type.asmTag, 94 fullClassName, 95 STATIC_FIELD_NAME, 96 STATIC_FIELD_SIGNATURE); 97 break; 98 case NEWINVOKESPECIAL: 99 handle = new Handle(type.asmTag, 100 fullClassName, 101 INIT_METHOD_NAME, 102 INIT_METHOD_SIGNATURE); 103 break; 104 case INVOKESTATIC: 105 handle = new Handle(type.asmTag, 106 fullClassName, 107 TARGET_METHOD_NAME, 108 TARGET_METHOD_SIGNATURE); 109 break; 110 case INVOKEINTERFACE: 111 handle = new Handle(type.asmTag, 112 getDummyInterfaceClassName(), 113 INSTANCE_TARGET_METHOD_NAME, 114 INSTANCE_TARGET_METHOD_SIGNATURE); 115 break; 116 case INVOKESPECIAL: 117 case INVOKEVIRTUAL: 118 handle = new Handle(type.asmTag, 119 fullClassName, 120 INSTANCE_TARGET_METHOD_NAME, 121 INSTANCE_TARGET_METHOD_SIGNATURE); 122 break; 123 default: 124 throw new Error("Unexpected handle type " + type); 125 } 126 mw.visitLdcInsn(handle); 127 128 switch (type) { 129 case GETFIELD: 130 case GETSTATIC: 131 mw.visitInsn(Opcodes.POP); 132 break; 133 } 134 } 135 }