1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17 package com.android.server.pm; 18 19 import android.content.pm.ApplicationInfo; 20 import android.os.Build; 21 import android.os.SystemProperties; 22 import android.text.TextUtils; 23 import android.util.ArraySet; 24 25 import java.util.ArrayList; 26 import java.util.List; 27 28 import dalvik.system.VMRuntime; 29 30 /** 31 * Provides various methods for obtaining and converting of instruction sets. 32 * 33 * @hide 34 */ 35 public class InstructionSets { 36 private static final String PREFERRED_INSTRUCTION_SET = 37 VMRuntime.getInstructionSet(Build.SUPPORTED_ABIS[0]); getAppDexInstructionSets(ApplicationInfo info)38 public static String[] getAppDexInstructionSets(ApplicationInfo info) { 39 if (info.primaryCpuAbi != null) { 40 if (info.secondaryCpuAbi != null) { 41 return new String[] { 42 VMRuntime.getInstructionSet(info.primaryCpuAbi), 43 VMRuntime.getInstructionSet(info.secondaryCpuAbi) }; 44 } else { 45 return new String[] { 46 VMRuntime.getInstructionSet(info.primaryCpuAbi) }; 47 } 48 } 49 50 return new String[] { getPreferredInstructionSet() }; 51 } 52 getAppDexInstructionSets(PackageSetting ps)53 public static String[] getAppDexInstructionSets(PackageSetting ps) { 54 if (ps.primaryCpuAbiString != null) { 55 if (ps.secondaryCpuAbiString != null) { 56 return new String[] { 57 VMRuntime.getInstructionSet(ps.primaryCpuAbiString), 58 VMRuntime.getInstructionSet(ps.secondaryCpuAbiString) }; 59 } else { 60 return new String[] { 61 VMRuntime.getInstructionSet(ps.primaryCpuAbiString) }; 62 } 63 } 64 65 return new String[] { getPreferredInstructionSet() }; 66 } 67 getPreferredInstructionSet()68 public static String getPreferredInstructionSet() { 69 return PREFERRED_INSTRUCTION_SET; 70 } 71 72 /** 73 * Returns the instruction set that should be used to compile dex code. In the presence of 74 * a native bridge this might be different than the one shared libraries use. 75 */ getDexCodeInstructionSet(String sharedLibraryIsa)76 public static String getDexCodeInstructionSet(String sharedLibraryIsa) { 77 // TODO b/19550105 Build mapping once instead of querying each time 78 String dexCodeIsa = SystemProperties.get("ro.dalvik.vm.isa." + sharedLibraryIsa); 79 return TextUtils.isEmpty(dexCodeIsa) ? sharedLibraryIsa : dexCodeIsa; 80 } 81 getDexCodeInstructionSets(String[] instructionSets)82 public static String[] getDexCodeInstructionSets(String[] instructionSets) { 83 ArraySet<String> dexCodeInstructionSets = new ArraySet<String>(instructionSets.length); 84 for (String instructionSet : instructionSets) { 85 dexCodeInstructionSets.add(getDexCodeInstructionSet(instructionSet)); 86 } 87 return dexCodeInstructionSets.toArray(new String[dexCodeInstructionSets.size()]); 88 } 89 90 /** 91 * Returns deduplicated list of supported instructions for dex code. 92 */ getAllDexCodeInstructionSets()93 public static String[] getAllDexCodeInstructionSets() { 94 String[] supportedInstructionSets = new String[Build.SUPPORTED_ABIS.length]; 95 for (int i = 0; i < supportedInstructionSets.length; i++) { 96 String abi = Build.SUPPORTED_ABIS[i]; 97 supportedInstructionSets[i] = VMRuntime.getInstructionSet(abi); 98 } 99 return getDexCodeInstructionSets(supportedInstructionSets); 100 } 101 getAllInstructionSets()102 public static List<String> getAllInstructionSets() { 103 final String[] allAbis = Build.SUPPORTED_ABIS; 104 final List<String> allInstructionSets = new ArrayList<String>(allAbis.length); 105 106 for (String abi : allAbis) { 107 final String instructionSet = VMRuntime.getInstructionSet(abi); 108 if (!allInstructionSets.contains(instructionSet)) { 109 allInstructionSets.add(instructionSet); 110 } 111 } 112 113 return allInstructionSets; 114 } 115 getPrimaryInstructionSet(ApplicationInfo info)116 public static String getPrimaryInstructionSet(ApplicationInfo info) { 117 if (info.primaryCpuAbi == null) { 118 return getPreferredInstructionSet(); 119 } 120 121 return VMRuntime.getInstructionSet(info.primaryCpuAbi); 122 } 123 124 } 125