1 /* 2 * Copyright (c) 2016, 2017, 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 jdk.tools.jaotc; 25 26 import org.graalvm.compiler.bytecode.Bytecodes; 27 28 import jdk.vm.ci.code.BytecodePosition; 29 import jdk.vm.ci.code.site.Call; 30 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod; 31 import jdk.vm.ci.meta.ResolvedJavaMethod; 32 33 final class CallInfo { 34 35 static boolean isStaticTarget(Call call) { 36 return !((HotSpotResolvedJavaMethod)call.target).hasReceiver(); 37 } 38 39 private static boolean isStaticOpcode(Call call) { 40 int opcode = getByteCode(call) & 0xFF; 41 return opcode == Bytecodes.INVOKESTATIC || opcode == Bytecodes.INVOKEDYNAMIC || opcode == Bytecodes.INVOKEVIRTUAL /* invokehandle */; 42 } 43 44 static boolean isStaticCall(Call call) { 45 if (isJavaCall(call) && isStaticTarget(call)) { 46 assert isStaticOpcode(call); 47 return true; 48 } 49 return false; 50 } 51 52 static boolean isSpecialCall(Call call) { 53 if (isJavaCall(call)) { 54 return ((getByteCode(call) & 0xFF) == Bytecodes.INVOKESPECIAL); 55 } 56 return false; 57 } 58 59 private static boolean isInvokeVirtual(Call call) { 60 if (isJavaCall(call)) { 61 return ((getByteCode(call) & 0xFF) == Bytecodes.INVOKEVIRTUAL) || ((getByteCode(call) & 0xFF) == Bytecodes.INVOKEINTERFACE); 62 } 63 return false; 64 } 65 66 static boolean isVirtualCall(CompiledMethodInfo methodInfo, Call call) { 67 return isInvokeVirtual(call) && !methodInfo.hasMark(call, MarkId.INVOKESPECIAL) && !isStaticTarget(call); 68 } 69 70 static boolean isOptVirtualCall(CompiledMethodInfo methodInfo, Call call) { 71 return isInvokeVirtual(call) && methodInfo.hasMark(call, MarkId.INVOKESPECIAL); 72 } 73 74 private static boolean isJavaCall(Call call) { 75 // If there is no associated debug info return false 76 if (call.debugInfo == null) { 77 return false; 78 } 79 BytecodePosition bcpos = call.debugInfo.getBytecodePosition(); 80 ResolvedJavaMethod method = bcpos.getMethod(); 81 // If bytecode position indicates a special value (negative value) it is 82 // not a normal java call 83 if (bcpos.getBCI() < 0) { 84 return false; 85 } 86 // If there is no method associated with the debuginfo, return false 87 if (method == null) { 88 return false; 89 } 90 assert (method instanceof HotSpotResolvedJavaMethod) : "Not a resolved Java call"; 91 return true; 92 } 93 94 private static byte getByteCode(Call call) { 95 ResolvedJavaMethod m = call.debugInfo.getBytecodePosition().getMethod(); 96 int callPosition = call.debugInfo.getBytecodePosition().getBCI(); 97 byte[] code = m.getCode(); 98 return code[callPosition]; 99 } 100 101 }