sysdeps/unix/sysv/linux/s390/init-first.c

   1 /* Initialization code run first thing by the ELF startup code.  Linux/s390.
   2    Copyright (C) 2008-2015 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifdef SHARED
  20 # include <dl-vdso.h>
  21 # undef __gettimeofday
  22 # undef __clock_gettime
  23 # undef __clock_getres
  24 # include <bits/libc-vdso.h>
  25
  26 long int (*__vdso_gettimeofday) (struct timeval *, void *) attribute_hidden;
  27
  28 long int (*__vdso_clock_gettime) (clockid_t, struct timespec *)
  29   __attribute__ ((nocommon));
  30 strong_alias (__vdso_clock_gettime, __GI___vdso_clock_gettime attribute_hidden)
  31
  32 long int (*__vdso_clock_getres) (clockid_t, struct timespec *)
  33   __attribute__ ((nocommon));
  34 strong_alias (__vdso_clock_getres, __GI___vdso_clock_getres attribute_hidden)
  35
  36
  37 static inline void
  38 _libc_vdso_platform_setup (void)
  39 {
  40   PREPARE_VERSION (linux2629, "LINUX_2.6.29", 123718585);
  41
  42   __vdso_gettimeofday = _dl_vdso_vsym ("__kernel_gettimeofday", &linux2629);
  43   __vdso_clock_gettime = _dl_vdso_vsym ("__kernel_clock_gettime", &linux2629);
  44   __vdso_clock_getres = _dl_vdso_vsym ("__kernel_clock_getres", &linux2629);
  45 }
  46
  47 # define VDSO_SETUP _libc_vdso_platform_setup
  48 #endif
  49
  50 #include <csu/init-first.c>