sysdeps/unix/sysv/linux/arm/init-first.c

   1 /* Initialization code run first thing by the ELF startup code.  Linux/ARM.
   2    Copyright (C) 2015-2019 Free Software Foundation, Inc.
   3
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public License as
   8    published by the Free Software Foundation; either version 2.1 of the
   9    License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <dl-vdso.h>
  21 #include <libc-vdso.h>
  22 #include <sysdep-vdso.h>
  23
  24 int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *) attribute_hidden;
  25 int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *);
  26
  27 static inline void
  28 _libc_vdso_platform_setup (void)
  29 {
  30   PREPARE_VERSION_KNOWN (linux26, LINUX_2_6);
  31
  32   void *p = _dl_vdso_vsym ("__vdso_gettimeofday", &linux26);
  33   PTR_MANGLE (p);
  34   VDSO_SYMBOL (gettimeofday) = p;
  35
  36   p = _dl_vdso_vsym ("__vdso_clock_gettime", &linux26);
  37   PTR_MANGLE (p);
  38   VDSO_SYMBOL (clock_gettime) = p;
  39 }
  40
  41 #define VDSO_SETUP _libc_vdso_platform_setup
  42
  43 #include <csu/init-first.c>