/* Prepare arguments for library initialization function. Copyright (C) 1997, 1999 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 Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* The job of this fragment it to find argc and friends for INIT. This is done in one of two ways: either in the stack context of program start, or having dlopen pass them in. */ #define SYSDEP_CALL_INIT(NAME, INIT) \ void NAME (void *arg) \ { \ int argc; \ char **argv, **envp; \ /* 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; \ \ if (!__libc_multiple_libcs) \ { \ argc = (int) (long int) arg; \ argv = (char **) &arg + 1; \ envp = &argv[argc+1]; \ } \ else \ { \ argc = (int) (long int) arg; \ argv = ((char ***) &arg)[1]; \ envp = ((char ***) &arg)[2]; \ } \ \ INIT (argc, argv, envp); \ }