1 files changed, 27 insertions, 0 deletions
diff --git a/compiler-rt/lib/builtins/cpu_model/aarch64/fmv/elf_aux_info.inc b/compiler-rt/lib/builtins/cpu_model/aarch64/fmv/elf_aux_info.inc
new file mode 100644
index 000000000000..aa975dc854f9
--- /dev/null
+++ b/compiler-rt/lib/builtins/cpu_model/aarch64/fmv/elf_aux_info.inc
@@ -0,0 +1,27 @@
+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) {
+  unsigned long hwcap = 0;
+  unsigned long hwcap2 = 0;
+  // CPU features already initialized.
+  if (__atomic_load_n(&__aarch64_cpu_features.features, __ATOMIC_RELAXED))
+    return;
+
+  int res = 0;
+  res = elf_aux_info(AT_HWCAP, &hwcap, sizeof hwcap);
+  res |= elf_aux_info(AT_HWCAP2, &hwcap2, sizeof hwcap2);
+  if (res)
+    return;
+
+  __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);
+}