1 /* 2 * Copyright (c) 2013, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jfr.internal.instrument; 27 28 import jdk.internal.org.objectweb.asm.Label; 29 import jdk.internal.org.objectweb.asm.Opcodes; 30 import jdk.internal.org.objectweb.asm.Type; 31 import jdk.internal.org.objectweb.asm.commons.LocalVariablesSorter; 32 import jdk.internal.org.objectweb.asm.commons.Remapper; 33 import jdk.internal.org.objectweb.asm.commons.RemappingMethodAdapter; 34 35 @Deprecated 36 final class JIMethodInliningAdapter extends RemappingMethodAdapter { 37 private final LocalVariablesSorter lvs; 38 private final Label end; 39 40 public JIMethodInliningAdapter(LocalVariablesSorter mv, Label end, int acc, String desc, Remapper remapper) { 41 super(acc, desc, mv, remapper); 42 this.lvs = mv; 43 this.end = end; 44 int offset = isStatic(acc) ? 0 : 1; 45 Type[] args = Type.getArgumentTypes(desc); 46 for (int i = args.length - 1; i >= 0; i--) { 47 super.visitVarInsn(args[i].getOpcode(Opcodes.ISTORE), i + offset); 48 } 49 if (offset > 0) { 50 super.visitVarInsn(Opcodes.ASTORE, 0); 51 } 52 } 53 54 private boolean isStatic(int acc) { 55 return (acc & Opcodes.ACC_STATIC) != 0; 56 } 57 58 @Override 59 public void visitInsn(int opcode) { 60 if (opcode == Opcodes.RETURN || opcode == Opcodes.IRETURN 61 || opcode == Opcodes.ARETURN || opcode == Opcodes.LRETURN) { 62 super.visitJumpInsn(Opcodes.GOTO, end); 63 } else { 64 super.visitInsn(opcode); 65 } 66 } 67 68 @Override 69 public void visitMaxs(int stack, int locals) { 70 } 71 72 @Override 73 protected int newLocalMapping(Type type) { 74 return lvs.newLocal(type); 75 } 76 }