int main(void)
{
if (android_getRuntimeCpuFamily() != ANDROID_CPU_FAMILY_ARM) {
printf("This is emulated ARM device, skip this test\n");
return 0;
}
uint32_t cpu_id = android_getCpuIdArm();
printf("cpu-features reports the following CPUID: 0x%08x\n",
cpu_id);
uint64_t features = android_getCpuFeatures();
#ifdef __thumb2__
const uint64_t idiv_flag = ANDROID_CPU_ARM_FEATURE_IDIV_THUMB2;
const char* variant = "thumb";
#else
const uint64_t idiv_flag = ANDROID_CPU_ARM_FEATURE_IDIV_ARM;
const char* variant = "arm";
#endif
printf("status of %s idiv instruction:\n", variant);
int idiv_reported = (features & idiv_flag) != 0;
printf(" reported : %s\n",
idiv_reported ? "supported" : "unsupported");
int idiv_checked = check_idiv();
printf(" runtime check : %s\n",
idiv_checked ? "supported" : "unsupported");
return (idiv_reported != idiv_checked);
}
static void static_arm_features_fill(void) {
#ifdef FE_HW_TARGET_ARM32
fe_hw_arm32_features_struct *arm32 = (void*)&fe_hw_arm32_cpu_info;
#else
fe_hw_arm64_features_struct *arm64 = (void*)&fe_hw_arm64_cpu_info;
#endif
#ifdef FE_TARGET_ANDROID
AndroidCpuFamily family = android_getCpuFamily();
uint64_t feats = android_getCpuFeatures();
#ifdef FE_HW_TARGET_ARM32
fe_dbg_assert(family == ANDROID_CPU_FAMILY_ARM);
arm32->cpuid = android_getCpuIdArm();
#define HELPER(CST,cst) \
if(feats & ANDROID_CPU_ARM_FEATURE_##CST) arm32->has_##cst = true
HELPER(ARMv7 , armv7 );
HELPER(VFPv3 , vfpv3 );
HELPER(NEON , neon );
HELPER(LDREX_STREX, ldrex_strex);
HELPER(VFPv2 , vfpv2 );
HELPER(VFP_D32 , vfp_d32 );
HELPER(VFP_FP16 , vfp_fp16 );
HELPER(VFP_FMA , vfp_fma );
HELPER(NEON_FMA , neon_fma );
HELPER(IDIV_ARM , idiv_arm );
HELPER(IDIV_THUMB2, idiv_thumb2);
HELPER(iWMMXt , iwmmxt );
HELPER(AES , aes );
HELPER(PMULL , pmull );
HELPER(SHA1 , sha1 );
HELPER(SHA2 , sha2 );
HELPER(CRC32 , crc32 );
#undef HELPER
#elif defined(FE_HW_TARGET_ARM64)
fe_dbg_assert(family == ANDROID_CPU_FAMILY_ARM64);
arm64->cpuid = android_getCpuIdArm();
#define HELPER(CST,cst) \
if(feats & ANDROID_CPU_ARM64_FEATURE_##CST) arm64->has_##cst = true
HELPER(FP , fp );
HELPER(ASIMD, asimd);
HELPER(AES , aes );
HELPER(PMULL, pmull);
HELPER(SHA1 , sha1 );
HELPER(SHA2 , sha2 );
HELPER(CRC32, crc32);
#undef HELPER
#endif /* FE_HW_TARGET_ARM32 */
#elif defined(FE_TARGET_IOS)
/* On iOS, we don't have to check for cpu features support because
* our app gets compiled twice into a fat binary - one part with
* NEON support and the other part without.
* The OS decides which part to use at lauch-time.
* See http://wanderingcoder.net/2010/07/19/ought-arm/
*/
#ifdef FE_HW_TARGET_ARM_IWMMXT
arm32->has_wmmx = true;
#endif
#ifdef FE_HW_TARGET_ARM_NEON
arm32->has_neon = true;
#endif
#endif /* FE_TARGET_ANDROID */
}
