/* Prepare arguments for library initialization function. Copyright (C) 1997 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; \ char** 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) \ { \ /* The ... in the arg list above forces the gnu ARM compiler to \ push r0, r1, r2, r3 onto the stack. This way we can get the address */ \ argc = *(int*) (&arg+4); \ argv = (char **) &arg + 5; \ envp = &argv[argc+1]; \ } \ else /* the three were passed as arguments */ \ { \ argc = (int)arg; \ argv = (char**)*(&arg + 1); \ envp = (char**)*(&arg + 2); \ } \ \ INIT (argc, argv, envp); \ }