1 /* Support for dynamic linking code in static libc.
2 Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 /* This file defines some things that for the dynamic linker are defined in
21 rtld.c and dl-sysdep.c in ways appropriate to bootstrap dynamic linking. */
26 #include <elf/ldsodefs.h>
27 #include <dl-machine.h>
29 extern char *__progname;
30 char **_dl_argv = &__progname; /* This is checked for some error messages. */
32 /* This defines the default search path for libraries.
33 For the dynamic linker it is set by -rpath when linking. */
34 const char *_dl_rpath = DEFAULT_RPATH;
36 /* Name of the architecture. */
37 const char *_dl_platform;
38 size_t _dl_platformlen;
41 int _dl_debug_impcalls;
42 int _dl_debug_bindings;
43 int _dl_debug_symbols;
44 int _dl_debug_versions;
48 /* If nonzero print warnings about problematic situations. */
51 /* Structure to store information about search paths. */
52 struct r_search_path *_dl_search_paths;
54 /* We never do profiling. */
55 const char *_dl_profile;
56 struct link_map *_dl_profile_map;
58 /* Names of shared object for which the RPATHs should be ignored. */
59 const char *_dl_ignore_rpath;
62 static void non_dynamic_init (void) __attribute__ ((unused));
65 non_dynamic_init (void)
67 _dl_verbose = *(getenv ("LD_WARN") ?: "") == '\0' ? 0 : 1;
69 _dl_pagesize = __getpagesize ();
71 /* Initialize the data structures for the search paths for shared
73 _dl_init_paths (getenv ("LD_LIBRARY_PATH"));
75 #ifdef DL_PLATFORM_INIT
79 /* Now determine the length of the platform string. */
80 if (_dl_platform != NULL)
81 _dl_platformlen = strlen (_dl_platform);
83 text_set_element (__libc_subinit, non_dynamic_init);
85 const struct r_strlenpair *
87 _dl_important_hwcaps (const char *platform, size_t platform_len, size_t *sz,
88 size_t *max_capstrlen)
90 struct r_strlenpair *result;
92 /* XXX We don't try to find the capabilities in this case. */
93 result = (struct r_strlenpair *) malloc (sizeof (*result));
95 _dl_signal_error (ENOMEM, NULL, "cannot create capability list");
97 result[0].str = (char *) result; /* Does not really matter. */