| /* |
| * Copyright (c) 2011, 2015, 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.vm.ci.hotspot; |
| |
| import java.nio.*; |
| import java.util.*; |
| import java.util.stream.*; |
| import java.util.stream.Stream.Builder; |
| |
| import jdk.vm.ci.code.*; |
| import jdk.vm.ci.code.CompilationResult.CodeAnnotation; |
| import jdk.vm.ci.code.CompilationResult.CodeComment; |
| import jdk.vm.ci.code.CompilationResult.DataPatch; |
| import jdk.vm.ci.code.CompilationResult.ExceptionHandler; |
| import jdk.vm.ci.code.CompilationResult.Infopoint; |
| import jdk.vm.ci.code.CompilationResult.JumpTable; |
| import jdk.vm.ci.code.CompilationResult.Mark; |
| import jdk.vm.ci.code.CompilationResult.Site; |
| import jdk.vm.ci.meta.*; |
| import jdk.vm.ci.meta.Assumptions.Assumption; |
| |
| /** |
| * A {@link CompilationResult} with additional HotSpot-specific information required for installing |
| * the code in HotSpot's code cache. |
| */ |
| public abstract class HotSpotCompiledCode { |
| |
| public final String name; |
| public final Site[] sites; |
| public final ExceptionHandler[] exceptionHandlers; |
| public final Comment[] comments; |
| public final Assumption[] assumptions; |
| |
| public final byte[] targetCode; |
| public final int targetCodeSize; |
| |
| public final byte[] dataSection; |
| public final int dataSectionAlignment; |
| public final DataPatch[] dataSectionPatches; |
| public final boolean isImmutablePIC; |
| |
| public final int totalFrameSize; |
| public final int customStackAreaOffset; |
| |
| /** |
| * The list of the methods whose bytecodes were used as input to the compilation. If |
| * {@code null}, then the compilation did not record method dependencies. Otherwise, the first |
| * element of this array is the root method of the compilation. |
| */ |
| public final ResolvedJavaMethod[] methods; |
| |
| public static class Comment { |
| |
| public final String text; |
| public final int pcOffset; |
| |
| public Comment(int pcOffset, String text) { |
| this.text = text; |
| this.pcOffset = pcOffset; |
| } |
| } |
| |
| public HotSpotCompiledCode(CompilationResult compResult) { |
| name = compResult.getName(); |
| sites = getSortedSites(compResult); |
| if (compResult.getExceptionHandlers().isEmpty()) { |
| exceptionHandlers = null; |
| } else { |
| exceptionHandlers = compResult.getExceptionHandlers().toArray(new ExceptionHandler[compResult.getExceptionHandlers().size()]); |
| } |
| List<CodeAnnotation> annotations = compResult.getAnnotations(); |
| comments = new Comment[annotations.size()]; |
| if (!annotations.isEmpty()) { |
| for (int i = 0; i < comments.length; i++) { |
| CodeAnnotation annotation = annotations.get(i); |
| String text; |
| if (annotation instanceof CodeComment) { |
| CodeComment codeComment = (CodeComment) annotation; |
| text = codeComment.value; |
| } else if (annotation instanceof JumpTable) { |
| JumpTable jumpTable = (JumpTable) annotation; |
| text = "JumpTable [" + jumpTable.low + " .. " + jumpTable.high + "]"; |
| } else { |
| text = annotation.toString(); |
| } |
| comments[i] = new Comment(annotation.position, text); |
| } |
| } |
| assumptions = compResult.getAssumptions(); |
| assert validateFrames(); |
| |
| targetCode = compResult.getTargetCode(); |
| targetCodeSize = compResult.getTargetCodeSize(); |
| |
| DataSection data = compResult.getDataSection(); |
| if (!data.isFinalized()) { |
| data.finalizeLayout(); |
| } |
| dataSection = new byte[data.getSectionSize()]; |
| |
| ByteBuffer buffer = ByteBuffer.wrap(dataSection).order(ByteOrder.nativeOrder()); |
| Builder<DataPatch> patchBuilder = Stream.builder(); |
| data.buildDataSection(buffer, patchBuilder); |
| |
| dataSectionAlignment = data.getSectionAlignment(); |
| dataSectionPatches = patchBuilder.build().toArray(len -> new DataPatch[len]); |
| |
| isImmutablePIC = compResult.isImmutablePIC(); |
| |
| totalFrameSize = compResult.getTotalFrameSize(); |
| customStackAreaOffset = compResult.getCustomStackAreaOffset(); |
| |
| methods = compResult.getMethods(); |
| } |
| |
| /** |
| * Ensure that all the frames passed into HotSpot are properly formatted with an empty or |
| * illegal slot following double word slots. |
| */ |
| private boolean validateFrames() { |
| for (Site site : sites) { |
| if (site instanceof Infopoint) { |
| Infopoint info = (Infopoint) site; |
| if (info.debugInfo != null) { |
| BytecodeFrame frame = info.debugInfo.frame(); |
| assert frame == null || frame.validateFormat(); |
| } |
| } |
| } |
| return true; |
| } |
| |
| static class SiteComparator implements Comparator<Site> { |
| |
| public int compare(Site s1, Site s2) { |
| if (s1.pcOffset == s2.pcOffset && (s1 instanceof Mark ^ s2 instanceof Mark)) { |
| return s1 instanceof Mark ? -1 : 1; |
| } |
| return s1.pcOffset - s2.pcOffset; |
| } |
| } |
| |
| private static Site[] getSortedSites(CompilationResult target) { |
| List<?>[] lists = new List<?>[]{target.getInfopoints(), target.getDataPatches(), target.getMarks()}; |
| int count = 0; |
| for (List<?> list : lists) { |
| count += list.size(); |
| } |
| Site[] result = new Site[count]; |
| int pos = 0; |
| for (List<?> list : lists) { |
| for (Object elem : list) { |
| result[pos++] = (Site) elem; |
| } |
| } |
| Arrays.sort(result, new SiteComparator()); |
| return result; |
| } |
| } |