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authorRoland McGrath <roland@gnu.org>1995-05-02 06:35:55 +0000
committerRoland McGrath <roland@gnu.org>1995-05-02 06:35:55 +0000
commitd66e34cd423425c348bcc83df127dd19711b0b9a (patch)
tree97058e776d3b4fe06ef54bc4951596991652183f /elf/dlopen.c
parent08162fa888913a5153d2fcdc4e1a816b57b1fe56 (diff)
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* 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.
Diffstat (limited to 'elf/dlopen.c')
-rw-r--r--elf/dlopen.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/elf/dlopen.c b/elf/dlopen.c
new file mode 100644
index 0000000..c16cff9
--- /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 <stddef.h>
+#include <link.h>
+#include <dlfcn.h>
+
+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;
+}