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 #include <cpu-features.h> 17 #include <stdio.h> 18 19 int main(void) 20 { 21 AndroidCpuFamily family = android_getCpuFamily(); 22 switch (family) { 23 case ANDROID_CPU_FAMILY_ARM: 24 printf("CPU family is ARM\n"); 25 break; 26 case ANDROID_CPU_FAMILY_X86: 27 printf("CPU family is x86\n"); 28 break; 29 case ANDROID_CPU_FAMILY_MIPS: 30 printf("CPU family is MIPS\n"); 31 break; 32 default: 33 fprintf(stderr, "Unsupported CPU family: %d\n", family); 34 return 1; 35 } 36 37 if (family == ANDROID_CPU_FAMILY_ARM) { 38 uint64_t features = android_getCpuFeatures(); 39 printf( "Supported ARM features:\n"); 40 #define CHECK(name) \ 41 if ((features & ANDROID_CPU_ARM_FEATURE_## name) != 0) { \ 42 printf( " "#name"\n" ); \ 43 } 44 CHECK(LDREX_STREX) 45 CHECK(VFPv2) 46 CHECK(ARMv7) 47 CHECK(VFPv3) 48 CHECK(VFP_D32) 49 CHECK(VFP_FP16) 50 CHECK(VFP_FMA) 51 CHECK(NEON) 52 CHECK(NEON_FMA) 53 CHECK(IDIV_ARM) 54 CHECK(IDIV_THUMB2) 55 CHECK(iWMMXt) 56 #undef CHECK 57 } 58 59 #ifdef __arm__ 60 uint32_t cpu_id = android_getCpuIdArm(); 61 printf( "ARM CpuID: %08x\n", cpu_id); 62 printf( " implementer: %02x\n", (cpu_id >> 24) & 0xff); 63 printf( " variant : %02x\n", (cpu_id >> 20) & 0x0f); 64 printf( " part : %03x\n", (cpu_id >> 4) & 0xfff); 65 printf( " revision : %x\n", cpu_id & 0x0f); 66 #endif 67 68 if (family == ANDROID_CPU_FAMILY_X86) { 69 uint64_t features = android_getCpuFeatures(); 70 printf( "Supported x86 features:\n"); 71 #define CHECK(name) \ 72 if ((features & ANDROID_CPU_X86_FEATURE_## name) != 0) { \ 73 printf( " "#name"\n" ); \ 74 } 75 CHECK(SSSE3) 76 CHECK(POPCNT) 77 CHECK(MOVBE) 78 #undef CHECK 79 } 80 81 int count = android_getCpuCount(); 82 printf( "Number of CPU cores: %d\n", count); 83 return 0; 84 } 85
