// TODO: Import those from libc, see https://github.com/rust-lang/libc/pull/1638
const AT_HWCAP: u64 = 16;
const HWCAP_SHA2: u64 = 64;
#[inline(always)]
pub fn sha2_supported() -> bool {
let hwcaps: u64 = unsafe { libc::getauxval(AT_HWCAP) };
(hwcaps & HWCAP_SHA2) != 0
}