File: sysauxv.inc

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llvm-toolchain-19 1%3A19.1.7-15
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void __init_cpu_features_resolver(unsigned long hwcap,
                                  const __ifunc_arg_t *arg) {
  if (__atomic_load_n(&__aarch64_cpu_features.features, __ATOMIC_RELAXED))
    return;
  __init_cpu_features_constructor(hwcap, arg);
}

void CONSTRUCTOR_ATTRIBUTE __init_cpu_features(void) {
  // CPU features already initialized.
  if (__atomic_load_n(&__aarch64_cpu_features.features, __ATOMIC_RELAXED))
    return;

  unsigned long hwcap = getauxval(AT_HWCAP);
  unsigned long hwcap2 = getauxval(AT_HWCAP2);

  __ifunc_arg_t arg;
  arg._size = sizeof(__ifunc_arg_t);
  arg._hwcap = hwcap;
  arg._hwcap2 = hwcap2;
  __init_cpu_features_constructor(hwcap | _IFUNC_ARG_HWCAP, &arg);
}