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/* Startup support for ELF initializers/finalizers in the main executable.
Copyright (C) 2002 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <stddef.h>
#ifdef HAVE_INITFINI_ARRAY
/* These magic symbols are provided by the linker. */
extern void (*__preinit_array_start []) (void);
extern void (*__preinit_array_end []) (void);
extern void (*__init_array_start []) (void);
extern void (*__init_array_end []) (void);
extern void (*__fini_array_start []) (void);
extern void (*__fini_array_end []) (void);
#endif
/* These function symbols are provided for the .init/.fini section entry
points automagically by the linker. */
extern void _init (void);
extern void _fini (void);
/* These functions are passed to __libc_start_main by the startup code.
These get statically linked into each program. For dynamically linked
programs, this module will come from libc_nonshared.a and differs from
the libc.a module in that it doesn't call the preinit array. */
void
__libc_csu_init (void)
{
#ifdef HAVE_INITFINI_ARRAY
/* For dynamically linked executables the preinit array is executed by
the dynamic linker (before initializing any shared object. */
# ifndef LIBC_NONSHARED
/* For static executables, preinit happens rights before init. */
{
const size_t size = __preinit_array_end - __preinit_array_start;
size_t i;
for (i = 0; i < size; i++)
(*__preinit_array_start [i]) ();
}
# endif
#endif
_init ();
#ifdef HAVE_INITFINI_ARRAY
{
const size_t size = __init_array_end - __init_array_start;
size_t i;
for (i = 0; i < size; i++)
(*__init_array_start [i]) ();
}
#endif
}
void
__libc_csu_fini (void)
{
#ifdef HAVE_INITFINI_ARRAY
size_t i = __fini_array_end - __fini_array_start;
while (i-- > 0)
(*__fini_array_start [i]) ();
#endif
_fini ();
}
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