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 isStaticCall(Call call) { 36 if (isJavaCall(call)) { 37 return ((getByteCode(call) & 0xFF) == Bytecodes.INVOKESTATIC); 38 } 39 return false; 40 } 41 42 static boolean isSpecialCall(Call call) { 43 if (isJavaCall(call)) { 44 return ((getByteCode(call) & 0xFF) == Bytecodes.INVOKESPECIAL); 45 } 46 return false; 47 } 48 49 private static boolean isInvokeVirtual(Call call) { 50 if (isJavaCall(call)) { 51 return ((getByteCode(call) & 0xFF) == Bytecodes.INVOKEVIRTUAL) || ((getByteCode(call) & 0xFF) == Bytecodes.INVOKEINTERFACE); 52 } 53 return false; 54 } 55 56 static boolean isVirtualCall(CompiledMethodInfo methodInfo, Call call) { 57 return isInvokeVirtual(call) && !methodInfo.hasMark(call, MarkId.INVOKESPECIAL); 58 } 59 60 static boolean isOptVirtualCall(CompiledMethodInfo methodInfo, Call call) { 61 return isInvokeVirtual(call) && methodInfo.hasMark(call, MarkId.INVOKESPECIAL); 62 } 63 64 private static boolean isJavaCall(Call call) { 65 // If there is no associated debug info return false 66 if (call.debugInfo == null) { 67 return false; 68 } 69 BytecodePosition bcpos = call.debugInfo.getBytecodePosition(); 70 ResolvedJavaMethod method = bcpos.getMethod(); 71 // If bytecode position indicates a special value (negative value) it is 72 // not a normal java call 73 if (bcpos.getBCI() < 0) { 74 return false; 75 } 76 // If there is no method associated with the debuginfo, return false 77 if (method == null) { 78 return false; 79 } 80 assert (method instanceof HotSpotResolvedJavaMethod) : "Not a resolved Java call"; 81 return true; 82 } 83 84 private static byte getByteCode(Call call) { 85 ResolvedJavaMethod m = call.debugInfo.getBytecodePosition().getMethod(); 86 int callPosition = call.debugInfo.getBytecodePosition().getBCI(); 87 byte[] code = m.getCode(); 88 return code[callPosition]; 89 } 90 91 }