/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*/
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package com.android.server.pm;
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import android.content.pm.ApplicationInfo;
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import android.os.Build;
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import android.os.SystemProperties;
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import android.text.TextUtils;
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import android.util.ArraySet;
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import java.util.ArrayList;
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import java.util.List;
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import dalvik.system.VMRuntime;
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/**
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* Provides various methods for obtaining and converting of instruction sets.
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*
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* @hide
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*/
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public class InstructionSets {
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private static final String PREFERRED_INSTRUCTION_SET =
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VMRuntime.getInstructionSet(Build.SUPPORTED_ABIS[0]);
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public static String[] getAppDexInstructionSets(ApplicationInfo info) {
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if (info.primaryCpuAbi != null) {
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if (info.secondaryCpuAbi != null) {
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return new String[] {
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VMRuntime.getInstructionSet(info.primaryCpuAbi),
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VMRuntime.getInstructionSet(info.secondaryCpuAbi) };
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} else {
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return new String[] {
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VMRuntime.getInstructionSet(info.primaryCpuAbi) };
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}
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}
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return new String[] { getPreferredInstructionSet() };
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}
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public static String[] getAppDexInstructionSets(PackageSetting ps) {
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if (ps.primaryCpuAbiString != null) {
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if (ps.secondaryCpuAbiString != null) {
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return new String[] {
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VMRuntime.getInstructionSet(ps.primaryCpuAbiString),
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VMRuntime.getInstructionSet(ps.secondaryCpuAbiString) };
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} else {
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return new String[] {
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VMRuntime.getInstructionSet(ps.primaryCpuAbiString) };
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}
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}
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return new String[] { getPreferredInstructionSet() };
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}
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public static String getPreferredInstructionSet() {
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return PREFERRED_INSTRUCTION_SET;
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}
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/**
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* Returns the instruction set that should be used to compile dex code. In the presence of
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* a native bridge this might be different than the one shared libraries use.
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*/
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public static String getDexCodeInstructionSet(String sharedLibraryIsa) {
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// TODO b/19550105 Build mapping once instead of querying each time
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String dexCodeIsa = SystemProperties.get("ro.dalvik.vm.isa." + sharedLibraryIsa);
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return TextUtils.isEmpty(dexCodeIsa) ? sharedLibraryIsa : dexCodeIsa;
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}
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public static String[] getDexCodeInstructionSets(String[] instructionSets) {
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ArraySet<String> dexCodeInstructionSets = new ArraySet<String>(instructionSets.length);
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for (String instructionSet : instructionSets) {
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dexCodeInstructionSets.add(getDexCodeInstructionSet(instructionSet));
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}
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return dexCodeInstructionSets.toArray(new String[dexCodeInstructionSets.size()]);
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}
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/**
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* Returns deduplicated list of supported instructions for dex code.
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*/
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public static String[] getAllDexCodeInstructionSets() {
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String[] supportedInstructionSets = new String[Build.SUPPORTED_ABIS.length];
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for (int i = 0; i < supportedInstructionSets.length; i++) {
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String abi = Build.SUPPORTED_ABIS[i];
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supportedInstructionSets[i] = VMRuntime.getInstructionSet(abi);
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}
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return getDexCodeInstructionSets(supportedInstructionSets);
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}
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public static List<String> getAllInstructionSets() {
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final String[] allAbis = Build.SUPPORTED_ABIS;
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final List<String> allInstructionSets = new ArrayList<String>(allAbis.length);
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for (String abi : allAbis) {
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final String instructionSet = VMRuntime.getInstructionSet(abi);
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if (!allInstructionSets.contains(instructionSet)) {
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allInstructionSets.add(instructionSet);
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}
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}
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return allInstructionSets;
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}
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public static String getPrimaryInstructionSet(ApplicationInfo info) {
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if (info.primaryCpuAbi == null) {
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return getPreferredInstructionSet();
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}
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return VMRuntime.getInstructionSet(info.primaryCpuAbi);
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}
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}
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