/* 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 #include #include #include #include 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 (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)); }