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      1 /*
      2  * Copyright (C) 2010 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 #include <cpu-features.h>
     18 #include <jni.h>
     19 #include <string.h>
     20 #include <sys/auxv.h>
     21 
     22 jboolean android_os_cts_CpuFeatures_isArmCpu(JNIEnv* env, jobject thiz)
     23 {
     24     AndroidCpuFamily cpuFamily = android_getCpuFamily();
     25     return cpuFamily == ANDROID_CPU_FAMILY_ARM;
     26 }
     27 
     28 jboolean android_os_cts_CpuFeatures_isArm7Compatible(JNIEnv* env, jobject thiz)
     29 {
     30     uint64_t cpuFeatures = android_getCpuFeatures();
     31     return (cpuFeatures & ANDROID_CPU_ARM_FEATURE_ARMv7) == ANDROID_CPU_ARM_FEATURE_ARMv7;
     32 }
     33 
     34 jboolean android_os_cts_CpuFeatures_isMipsCpu(JNIEnv* env, jobject thiz)
     35 {
     36     AndroidCpuFamily cpuFamily = android_getCpuFamily();
     37     return cpuFamily == ANDROID_CPU_FAMILY_MIPS;
     38 }
     39 
     40 jboolean android_os_cts_CpuFeatures_isX86Cpu(JNIEnv* env, jobject thiz)
     41 {
     42     AndroidCpuFamily cpuFamily = android_getCpuFamily();
     43     return cpuFamily == ANDROID_CPU_FAMILY_X86;
     44 }
     45 
     46 jboolean android_os_cts_CpuFeatures_isArm64Cpu(JNIEnv* env, jobject thiz)
     47 {
     48     AndroidCpuFamily cpuFamily = android_getCpuFamily();
     49     return cpuFamily == ANDROID_CPU_FAMILY_ARM64;
     50 }
     51 
     52 jboolean android_os_cts_CpuFeatures_isMips64Cpu(JNIEnv* env, jobject thiz)
     53 {
     54     AndroidCpuFamily cpuFamily = android_getCpuFamily();
     55     return cpuFamily == ANDROID_CPU_FAMILY_MIPS64;
     56 }
     57 
     58 jboolean android_os_cts_CpuFeatures_isX86_64Cpu(JNIEnv* env, jobject thiz)
     59 {
     60     AndroidCpuFamily cpuFamily = android_getCpuFamily();
     61     return cpuFamily == ANDROID_CPU_FAMILY_X86_64;
     62 }
     63 
     64 jint android_os_cts_CpuFeatures_getHwCaps(JNIEnv*, jobject)
     65 {
     66     return (jint)getauxval(AT_HWCAP);
     67 }
     68 
     69 static JNINativeMethod gMethods[] = {
     70     {  "isArmCpu", "()Z",
     71             (void *) android_os_cts_CpuFeatures_isArmCpu  },
     72     {  "isArm7Compatible", "()Z",
     73             (void *) android_os_cts_CpuFeatures_isArm7Compatible  },
     74     {  "isMipsCpu", "()Z",
     75             (void *) android_os_cts_CpuFeatures_isMipsCpu  },
     76     {  "isX86Cpu", "()Z",
     77             (void *) android_os_cts_CpuFeatures_isX86Cpu  },
     78     {  "isArm64Cpu", "()Z",
     79             (void *) android_os_cts_CpuFeatures_isArm64Cpu  },
     80     {  "isMips64Cpu", "()Z",
     81             (void *) android_os_cts_CpuFeatures_isMips64Cpu  },
     82     {  "isX86_64Cpu", "()Z",
     83             (void *) android_os_cts_CpuFeatures_isX86_64Cpu  },
     84     {  "getHwCaps", "()I",
     85             (void *) android_os_cts_CpuFeatures_getHwCaps  },
     86 };
     87 
     88 int register_android_os_cts_CpuFeatures(JNIEnv* env)
     89 {
     90     jclass clazz = env->FindClass("android/os/cts/CpuFeatures");
     91 
     92     return env->RegisterNatives(clazz, gMethods,
     93             sizeof(gMethods) / sizeof(JNINativeMethod));
     94 }
     95