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/* Copyright (C) 1998, 1999, 2000, 2001, 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 <stdlib.h>
#include <unistd.h>
#include <ldsodefs.h>
#include <bp-start.h>
#include <bp-sym.h>
extern void __libc_init_first (int argc, char **argv, char **envp);
extern int _dl_starting_up;
weak_extern (_dl_starting_up)
extern int __libc_multiple_libcs;
extern void *__libc_stack_end;
#ifndef SHARED
extern void __pthread_initialize_minimal (void) __attribute__ ((weak));
#endif
extern int BP_SYM (__libc_start_main) (int (*main) (int, char **, char **),
int argc,
char *__unbounded *__unbounded ubp_av,
void (*init) (void),
void (*fini) (void),
void (*rtld_fini) (void),
void *__unbounded stack_end)
__attribute__ ((noreturn));
int
/* GKM FIXME: GCC: this should get __BP_ prefix by virtue of the
BPs in the arglist of startup_info.main and startup_info.init. */
BP_SYM (__libc_start_main) (int (*main) (int, char **, char **),
int argc, char *__unbounded *__unbounded ubp_av,
void (*init) (void), void (*fini) (void),
void (*rtld_fini) (void), void *__unbounded stack_end)
{
char *__unbounded *__unbounded ubp_ev = &ubp_av[argc + 1];
#if __BOUNDED_POINTERS__
char **argv;
#else
# define argv ubp_av
#endif
#ifndef SHARED
# ifdef HAVE_AUX_VECTOR
void *__unbounded *__unbounded auxvec;
# endif
/* The next variable is only here to work around a bug in gcc <= 2.7.2.2.
If the address would be taken inside the expression the optimizer
would try to be too smart and throws it away. Grrr. */
int *dummy_addr = &_dl_starting_up;
__libc_multiple_libcs = dummy_addr && !_dl_starting_up;
#endif
INIT_ARGV_and_ENVIRON;
/* Store the lowest stack address. */
__libc_stack_end = stack_end;
#ifndef SHARED
# ifdef HAVE_AUX_VECTOR
/* First process the auxiliary vector since we need to find the
program header to locate an eventually present PT_TLS entry. */
for (auxvec = (void *__unbounded *__unbounded) ubp_ev;
*auxvec != NULL; ++auxvec);
++auxvec;
_dl_aux_init ((ElfW(auxv_t) *) auxvec);
# endif
/* Initialize the thread library at least a bit since the libgcc
functions are using thread functions if these are available and
we need to setup errno. If there is no thread library and we
handle TLS the function is defined in the libc to initialized the
TLS handling. */
# ifndef TLS
if (__pthread_initialize_minimal)
# endif
__pthread_initialize_minimal ();
/* Some security at this point. Prevent starting a SUID binary where
the standard file descriptors are not opened. We have to do this
only for statically linked applications since otherwise the dynamic
loader did the work already. */
if (__builtin_expect (__libc_enable_secure, 0))
__libc_check_standard_fds ();
#endif
/* Register the destructor of the dynamic linker if there is any. */
if (__builtin_expect (rtld_fini != NULL, 1))
__cxa_atexit ((void (*) (void *)) rtld_fini, NULL, NULL);
/* Call the initializer of the libc. This is only needed here if we
are compiling for the static library in which case we haven't
run the constructors in `_dl_start_user'. */
#ifndef SHARED
__libc_init_first (argc, argv, __environ);
#endif
/* Register the destructor of the program, if any. */
if (fini)
__cxa_atexit ((void (*) (void *)) fini, NULL, NULL);
/* Call the initializer of the program, if any. */
#ifdef SHARED
if (__builtin_expect (GL(dl_debug_mask) & DL_DEBUG_IMPCALLS, 0))
_dl_debug_printf ("\ninitialize program: %s\n\n", argv[0]);
#endif
if (init)
(*init) ();
#ifdef SHARED
if (__builtin_expect (GL(dl_debug_mask) & DL_DEBUG_IMPCALLS, 0))
_dl_debug_printf ("\ntransferring control: %s\n\n", argv[0]);
#endif
exit ((*main) (argc, argv, __environ));
}
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