From d66e34cd423425c348bcc83df127dd19711b0b9a Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Tue, 2 May 1995 06:35:55 +0000 Subject: * sysdeps/mach/i386/sysdep.h (SNARF_ARGS, CALL_WITH_SP): Rewritten. * sysdeps/i386/dl-machine.h: New file. * sysdeps/stub/dl-machine.h: New file. * sysdeps/i386/dl-runtime.c: New file. * sysdeps/stub/dl-runtime.c: New file. * sysdeps/i386/elf/start.S: New file. * sysdeps/generic/dl-sysdep.c: New file. * sysdeps/mach/hurd/dl-sysdep.c: New file. --- elf/dlopen.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 elf/dlopen.c (limited to 'elf/dlopen.c') diff --git a/elf/dlopen.c b/elf/dlopen.c new file mode 100644 index 0000000000..c16cff9ae2 --- /dev/null +++ b/elf/dlopen.c @@ -0,0 +1,62 @@ +/* dlopen -- Load a shared object at run time. +Copyright (C) 1995 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include +#include +#include + +void * +dlopen (const char *file, dl_open_mode mode) +{ + struct link_map *new, *l; + + void doit (void) + { + Elf32_Addr init; + + new = _dl_map_object (_dl_loaded, file, NULL); + + /* Map in any dependencies. */ + for (l = new; l; l = l->l_next) + if (! l->l_deps_loaded) + { + if (l->l_info[DT_NEEDED]) + { + const char *strtab + = (void *) l->l_addr + l->l_info[DT_STRTAB]->d_un.d_ptr; + const Elf32_Dyn *d; + for (d = l->l_ld; d->d_tag != DT_NULL; ++d) + if (d->d_tag == DT_NEEDED) + _dl_map_object (l, strtab + d->d_un.d_val, NULL); + } + l->l_deps_loaded = 1; + } + + /* Relocate the objects loaded. */ + for (l = new; l; l = l->l_next) + if (! l->l_relocated) + _dl_relocate_object (l, mode == RTLD_LAZY); + + /* Run the initializer functions of new objects. */ + while (init = _dl_init_next ()) + (*(void (*) (void)) init) (); + } + + return _dlerror_run (doit) ? NULL : new; +} -- cgit 1.4.1