| /* |
| * Copyright (c) 2011, 2016, 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 jdk.vm.ci.code.BytecodeFrame; |
| import jdk.vm.ci.code.CompiledCode; |
| import jdk.vm.ci.code.StackSlot; |
| import jdk.vm.ci.code.site.DataPatch; |
| import jdk.vm.ci.code.site.Infopoint; |
| import jdk.vm.ci.code.site.Site; |
| import jdk.vm.ci.meta.Assumptions.Assumption; |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| |
| /** |
| * A {@link CompiledCode} with additional HotSpot-specific information required for installing the |
| * code in HotSpot's code cache. |
| */ |
| public class HotSpotCompiledCode implements CompiledCode { |
| |
| /** |
| * The name of this compilation unit. |
| */ |
| protected final String name; |
| |
| /** |
| * The buffer containing the emitted machine code. |
| */ |
| protected final byte[] targetCode; |
| |
| /** |
| * The leading number of bytes in {@link #targetCode} containing the emitted machine code. |
| */ |
| protected final int targetCodeSize; |
| |
| /** |
| * A list of code annotations describing special sites in {@link #targetCode}. |
| */ |
| protected final Site[] sites; |
| |
| /** |
| * A list of {@link Assumption} this code relies on. |
| */ |
| protected final Assumption[] assumptions; |
| |
| /** |
| * 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. |
| */ |
| protected final ResolvedJavaMethod[] methods; |
| |
| /** |
| * A list of comments that will be included in code dumps. |
| */ |
| protected final Comment[] comments; |
| |
| /** |
| * The data section containing serialized constants for the emitted machine code. |
| */ |
| protected final byte[] dataSection; |
| |
| /** |
| * The minimum alignment of the data section. |
| */ |
| protected final int dataSectionAlignment; |
| |
| /** |
| * A list of relocations in the {@link #dataSection}. |
| */ |
| protected final DataPatch[] dataSectionPatches; |
| |
| /** |
| * A flag determining whether this code is immutable and position independent. |
| */ |
| protected final boolean isImmutablePIC; |
| |
| /** |
| * The total size of the stack frame of this compiled method. |
| */ |
| protected final int totalFrameSize; |
| |
| /** |
| * The deopt rescue slot. Must be non-null if there is a safepoint in the method. |
| */ |
| protected final StackSlot deoptRescueSlot; |
| |
| public static class Comment { |
| |
| public final String text; |
| public final int pcOffset; |
| |
| public Comment(int pcOffset, String text) { |
| this.text = text; |
| this.pcOffset = pcOffset; |
| } |
| } |
| |
| @SuppressFBWarnings(value = "EI_EXPOSE_REP2", justification = "caller transfers ownership of `sites`, `targetCode`, `comments`, `methods`, `dataSection`, `dataSectionPatches` and `assumptions`") |
| public HotSpotCompiledCode(String name, byte[] targetCode, int targetCodeSize, Site[] sites, Assumption[] assumptions, ResolvedJavaMethod[] methods, Comment[] comments, byte[] dataSection, |
| int dataSectionAlignment, DataPatch[] dataSectionPatches, boolean isImmutablePIC, int totalFrameSize, StackSlot deoptRescueSlot) { |
| this.name = name; |
| this.targetCode = targetCode; |
| this.targetCodeSize = targetCodeSize; |
| this.sites = sites; |
| this.assumptions = assumptions; |
| this.methods = methods; |
| |
| this.comments = comments; |
| this.dataSection = dataSection; |
| this.dataSectionAlignment = dataSectionAlignment; |
| this.dataSectionPatches = dataSectionPatches; |
| this.isImmutablePIC = isImmutablePIC; |
| this.totalFrameSize = totalFrameSize; |
| this.deoptRescueSlot = deoptRescueSlot; |
| |
| assert validateFrames(); |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| @Override |
| public String toString() { |
| return name; |
| } |
| |
| /** |
| * Ensure that all the frames passed into the VM 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; |
| } |
| } |