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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define __STDC_FORMAT_MACROS 1
#include <cpu-features.h>
#include <inttypes.h>
#include <stdio.h>
int main(void)
{
AndroidCpuFamily family = android_getCpuFamily();
switch (family) {
case ANDROID_CPU_FAMILY_ARM:
printf("CPU family is ARM\n");
break;
case ANDROID_CPU_FAMILY_X86:
printf("CPU family is x86\n");
break;
case ANDROID_CPU_FAMILY_MIPS:
printf("CPU family is MIPS\n");
break;
case ANDROID_CPU_FAMILY_ARM64:
printf("CPU family is ARM64\n");
break;
case ANDROID_CPU_FAMILY_X86_64:
printf("CPU family is x86_64\n");
break;
case ANDROID_CPU_FAMILY_MIPS64:
printf("CPU family is MIPS64\n");
break;
default:
fprintf(stderr, "Unsupported CPU family: %d\n", family);
return 1;
}
if (family == ANDROID_CPU_FAMILY_ARM) {
uint64_t features = android_getCpuFeatures();
printf( "Supported ARM features:\n");
#define CHECK(name) \
if ((features & ANDROID_CPU_ARM_FEATURE_## name) != 0) { \
printf( " "#name"\n" ); \
}
CHECK(LDREX_STREX)
CHECK(VFPv2)
CHECK(ARMv7)
CHECK(VFPv3)
CHECK(VFP_D32)
CHECK(VFP_FP16)
CHECK(VFP_FMA)
CHECK(NEON)
CHECK(NEON_FMA)
CHECK(IDIV_ARM)
CHECK(IDIV_THUMB2)
CHECK(iWMMXt)
#undef CHECK
}
#ifdef __arm__
uint32_t cpu_id = android_getCpuIdArm();
printf( "ARM CpuID: %08x\n", cpu_id);
printf( " implementer: %02x\n", (cpu_id >> 24) & 0xff);
printf( " variant : %02x\n", (cpu_id >> 20) & 0x0f);
printf( " part : %03x\n", (cpu_id >> 4) & 0xfff);
printf( " revision : %x\n", cpu_id & 0x0f);
#endif
if (family == ANDROID_CPU_FAMILY_X86) {
uint64_t features = android_getCpuFeatures();
printf( "Supported x86 features:\n");
#define CHECK(name) \
if ((features & ANDROID_CPU_X86_FEATURE_## name) != 0) { \
printf( " "#name"\n" ); \
}
CHECK(SSSE3)
CHECK(POPCNT)
CHECK(MOVBE)
#undef CHECK
}
int result = 0;
// Check that the CPU features mask is empty for anything that isn't
// 32-bit ARM or 32-bit x86.
if (family != ANDROID_CPU_FAMILY_ARM &&
family != ANDROID_CPU_FAMILY_X86) {
uint64_t features = android_getCpuFeatures();
if (features != 0) {
printf("ERROR: Unexpected CPU features mask: %016" PRIX64 "\n",
features);
result = 1;
}
}
int count = android_getCpuCount();
printf( "Number of CPU cores: %d\n", count);
return result;
}
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