| /* |
| * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.tools.jaotc; |
| |
| import org.graalvm.compiler.bytecode.Bytecodes; |
| |
| import jdk.vm.ci.code.BytecodePosition; |
| import jdk.vm.ci.code.site.Call; |
| import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod; |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| |
| final class CallInfo { |
| |
| static boolean isStaticTarget(Call call) { |
| return !((HotSpotResolvedJavaMethod)call.target).hasReceiver(); |
| } |
| |
| private static boolean isStaticOpcode(Call call) { |
| int opcode = getByteCode(call) & 0xFF; |
| return opcode == Bytecodes.INVOKESTATIC || opcode == Bytecodes.INVOKEDYNAMIC || opcode == Bytecodes.INVOKEVIRTUAL /* invokehandle */; |
| } |
| |
| static boolean isStaticCall(Call call) { |
| if (isJavaCall(call) && isStaticTarget(call)) { |
| assert isStaticOpcode(call); |
| return true; |
| } |
| return false; |
| } |
| |
| static boolean isSpecialCall(Call call) { |
| if (isJavaCall(call)) { |
| return ((getByteCode(call) & 0xFF) == Bytecodes.INVOKESPECIAL); |
| } |
| return false; |
| } |
| |
| private static boolean isInvokeVirtual(Call call) { |
| if (isJavaCall(call)) { |
| return ((getByteCode(call) & 0xFF) == Bytecodes.INVOKEVIRTUAL) || ((getByteCode(call) & 0xFF) == Bytecodes.INVOKEINTERFACE); |
| } |
| return false; |
| } |
| |
| static boolean isVirtualCall(CompiledMethodInfo methodInfo, Call call) { |
| return isInvokeVirtual(call) && !methodInfo.hasMark(call, MarkId.INVOKESPECIAL) && !isStaticTarget(call); |
| } |
| |
| static boolean isOptVirtualCall(CompiledMethodInfo methodInfo, Call call) { |
| return isInvokeVirtual(call) && methodInfo.hasMark(call, MarkId.INVOKESPECIAL); |
| } |
| |
| private static boolean isJavaCall(Call call) { |
| // If there is no associated debug info return false |
| if (call.debugInfo == null) { |
| return false; |
| } |
| BytecodePosition bcpos = call.debugInfo.getBytecodePosition(); |
| ResolvedJavaMethod method = bcpos.getMethod(); |
| // If bytecode position indicates a special value (negative value) it is |
| // not a normal java call |
| if (bcpos.getBCI() < 0) { |
| return false; |
| } |
| // If there is no method associated with the debuginfo, return false |
| if (method == null) { |
| return false; |
| } |
| assert (method instanceof HotSpotResolvedJavaMethod) : "Not a resolved Java call"; |
| return true; |
| } |
| |
| private static byte getByteCode(Call call) { |
| ResolvedJavaMethod m = call.debugInfo.getBytecodePosition().getMethod(); |
| int callPosition = call.debugInfo.getBytecodePosition().getBCI(); |
| byte[] code = m.getCode(); |
| return code[callPosition]; |
| } |
| |
| } |