| /* |
| * Copyright 2013, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.jf.dexlib2; |
| |
| import com.google.common.collect.Maps; |
| import com.google.common.collect.RangeMap; |
| |
| import javax.annotation.Nonnull; |
| import javax.annotation.Nullable; |
| import java.util.EnumMap; |
| import java.util.HashMap; |
| |
| import static org.jf.dexlib2.VersionMap.NO_VERSION; |
| import static org.jf.dexlib2.VersionMap.mapApiToArtVersion; |
| import static org.jf.dexlib2.VersionMap.mapArtVersionToApi; |
| |
| public class Opcodes { |
| |
| /** |
| * Either the api level for dalvik opcodes, or the art version for art opcodes |
| */ |
| public final int api; |
| public final int artVersion; |
| @Nonnull private final Opcode[] opcodesByValue = new Opcode[255]; |
| @Nonnull private final EnumMap<Opcode, Short> opcodeValues; |
| @Nonnull private final HashMap<String, Opcode> opcodesByName; |
| |
| @Nonnull |
| public static Opcodes forApi(int api) { |
| return new Opcodes(api, NO_VERSION); |
| } |
| |
| @Nonnull |
| public static Opcodes forArtVersion(int artVersion) { |
| return new Opcodes(NO_VERSION, artVersion); |
| } |
| |
| /** |
| * @return a default Opcodes instance for when the exact Opcodes to use doesn't matter or isn't known |
| */ |
| @Nonnull |
| public static Opcodes getDefault() { |
| // The last pre-art api |
| return forApi(20); |
| } |
| |
| private Opcodes(int api, int artVersion) { |
| |
| |
| if (api >= 21) { |
| this.api = api; |
| this.artVersion = mapApiToArtVersion(api); |
| } else if (artVersion >= 0 && artVersion < 39) { |
| this.api = mapArtVersionToApi(artVersion); |
| this.artVersion = artVersion; |
| } else { |
| this.api = api; |
| this.artVersion = artVersion; |
| } |
| |
| opcodeValues = new EnumMap<Opcode, Short>(Opcode.class); |
| opcodesByName = Maps.newHashMap(); |
| |
| int version; |
| if (isArt()) { |
| version = this.artVersion; |
| } else { |
| version = this.api; |
| } |
| |
| for (Opcode opcode: Opcode.values()) { |
| RangeMap<Integer, Short> versionToValueMap; |
| |
| if (isArt()) { |
| versionToValueMap = opcode.artVersionToValueMap; |
| } else { |
| versionToValueMap = opcode.apiToValueMap; |
| } |
| |
| Short opcodeValue = versionToValueMap.get(version); |
| if (opcodeValue != null) { |
| if (!opcode.format.isPayloadFormat) { |
| opcodesByValue[opcodeValue] = opcode; |
| } |
| opcodeValues.put(opcode, opcodeValue); |
| opcodesByName.put(opcode.name.toLowerCase(), opcode); |
| } |
| } |
| } |
| |
| @Nullable |
| public Opcode getOpcodeByName(@Nonnull String opcodeName) { |
| return opcodesByName.get(opcodeName.toLowerCase()); |
| } |
| |
| @Nullable |
| public Opcode getOpcodeByValue(int opcodeValue) { |
| switch (opcodeValue) { |
| case 0x100: |
| return Opcode.PACKED_SWITCH_PAYLOAD; |
| case 0x200: |
| return Opcode.SPARSE_SWITCH_PAYLOAD; |
| case 0x300: |
| return Opcode.ARRAY_PAYLOAD; |
| default: |
| if (opcodeValue >= 0 && opcodeValue < opcodesByValue.length) { |
| return opcodesByValue[opcodeValue]; |
| } |
| return null; |
| } |
| } |
| |
| @Nullable |
| public Short getOpcodeValue(@Nonnull Opcode opcode) { |
| return opcodeValues.get(opcode); |
| } |
| |
| public boolean isArt() { |
| return artVersion != NO_VERSION; |
| } |
| } |