/* Invoke the early initialization function in libc.so.

   Copyright (C) 2020 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <https://www.gnu.org/licenses/>.  */

#include <assert.h>

#include <ldsodefs.h>

#include <libc-early-init.h>

#include <link.h>

#include <stddef.h>

void

_dl_call_libc_early_init (struct link_map *libc_map, _Bool initial)

{

  /* There is nothing to do if we did not actually load libc.so.  */

  if (libc_map == NULL)

    return;

  const ElfW(Sym) *sym

    = _dl_lookup_direct (libc_map, "__libc_early_init",

                         0x069682ac, /* dl_new_hash output.  */

                         "GLIBC_PRIVATE",

                         0x0963cf85); /* _dl_elf_hash output.  */

  assert (sym != NULL);

  __typeof (__libc_early_init) *early_init

    = DL_SYMBOL_ADDRESS (libc_map, sym);

  early_init (initial);

}