Mercurial > hg > graal-jvmci-8
view jvmci/jdk.vm.ci.code/src/jdk/vm/ci/code/DebugInfo.java @ 22783:d63506bb5237
Make CallingConvention.Type extensible; remove unused stackOnly parameter
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Thu, 21 Jan 2016 13:53:26 -0800 |
parents | 1bbd4a7c274b |
children | 9e1235406b59 |
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/* * Copyright (c) 2009, 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.code; import java.util.Objects; /** * Represents the debugging information for a particular point of execution. This information * includes: * <ul> * <li>a {@linkplain #getBytecodePosition() bytecode position}</li> * <li>a reference map for registers and stack slots in the current frame</li> * <li>a map from bytecode locals and operand stack slots to their values or locations from which * their values can be read</li> * <li>a map from the registers (in the caller's frame) to the slots where they are saved in the * current frame</li> * </ul> */ public final class DebugInfo { private final BytecodePosition bytecodePosition; private ReferenceMap referenceMap; @SuppressWarnings("unused") private final VirtualObject[] virtualObjectMapping; private RegisterSaveLayout calleeSaveInfo; /** * Creates a new {@link DebugInfo} from the given values. * * @param codePos the {@linkplain BytecodePosition code position} or {@linkplain BytecodeFrame * frame} info * @param virtualObjectMapping the mapping of {@link VirtualObject}s to their real values */ public DebugInfo(BytecodePosition codePos, VirtualObject[] virtualObjectMapping) { this.bytecodePosition = codePos; this.virtualObjectMapping = virtualObjectMapping; } public DebugInfo(BytecodePosition codePos) { this(codePos, null); } public void setReferenceMap(ReferenceMap referenceMap) { this.referenceMap = referenceMap; } /** * @return {@code true} if this debug information has a frame */ public boolean hasFrame() { return getBytecodePosition() instanceof BytecodeFrame; } /** * Gets the deoptimization information for each inlined frame (if available). * * @return {@code null} if no frame de-opt info is {@linkplain #hasFrame() available} */ public BytecodeFrame frame() { if (hasFrame()) { return (BytecodeFrame) getBytecodePosition(); } return null; } @Override public String toString() { return CodeUtil.append(new StringBuilder(100), this, null).toString(); } /** * @return The code position (including all inlined methods) of this debug info. If this is a * {@link BytecodeFrame} instance, then it is also the deoptimization information for * each inlined frame. */ public BytecodePosition getBytecodePosition() { return bytecodePosition; } public ReferenceMap getReferenceMap() { return referenceMap; } /** * Sets the map from the registers (in the caller's frame) to the slots where they are saved in * the current frame. */ public void setCalleeSaveInfo(RegisterSaveLayout calleeSaveInfo) { this.calleeSaveInfo = calleeSaveInfo; } /** * Gets the map from the registers (in the caller's frame) to the slots where they are saved in * the current frame. If no such information is available, {@code null} is returned. */ public RegisterSaveLayout getCalleeSaveInfo() { return calleeSaveInfo; } @Override public int hashCode() { throw new UnsupportedOperationException("hashCode"); } @Override public boolean equals(Object obj) { if (this == obj) { return true; } if (obj instanceof DebugInfo) { DebugInfo that = (DebugInfo) obj; if (Objects.equals(this.bytecodePosition, that.bytecodePosition) && Objects.equals(this.calleeSaveInfo, that.calleeSaveInfo) && Objects.equals(this.referenceMap, that.referenceMap)) { return true; } } return false; } }