mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-06 05:10:05 +00:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
131 lines
4.3 KiB
C
131 lines
4.3 KiB
C
/* Copyright (C) 1998, 1999, 2000, 2001 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
|
|
/* 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 (__pthread_initialize_minimal)
|
|
__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 ();
|
|
|
|
# ifdef HAVE_AUX_VECTOR
|
|
for (auxvec = (void *__unbounded *__unbounded) ubp_ev;
|
|
*auxvec != NULL; ++auxvec);
|
|
++auxvec;
|
|
_dl_aux_init ((ElfW(auxv_t) *) auxvec);
|
|
# endif
|
|
#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 (_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 (_dl_debug_mask & DL_DEBUG_IMPCALLS, 0))
|
|
_dl_debug_printf ("\ntransferring control: %s\n\n", argv[0]);
|
|
#endif
|
|
|
|
exit ((*main) (argc, argv, __environ));
|
|
}
|