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8dd56993 | 1 | /* Locate the shared object symbol nearest a given address. |
d4697bc9 | 2 | Copyright (C) 2003-2014 Free Software Foundation, Inc. |
8dd56993 RM |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
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 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
8dd56993 RM |
18 | |
19 | #include <dlfcn.h> | |
20 | ||
5f21997b UD |
21 | #if !defined SHARED && defined IS_IN_libdl |
22 | ||
8dd56993 RM |
23 | int |
24 | dladdr1 (const void *address, Dl_info *info, void **extra, int flags) | |
25 | { | |
5f21997b UD |
26 | return __dladdr1 (address, info, extra, flags); |
27 | } | |
28 | ||
29 | #else | |
30 | ||
31 | int | |
32 | __dladdr1 (const void *address, Dl_info *info, void **extra, int flags) | |
33 | { | |
34 | # ifdef SHARED | |
35 | if (__builtin_expect (_dlfcn_hook != NULL, 0)) | |
36 | return _dlfcn_hook->dladdr1 (address, info, extra, flags); | |
37 | # endif | |
38 | ||
8dd56993 RM |
39 | switch (flags) |
40 | { | |
41 | default: /* Make this an error? */ | |
42 | case 0: | |
43 | return _dl_addr (address, info, NULL, NULL); | |
44 | case RTLD_DL_SYMENT: | |
45 | return _dl_addr (address, info, NULL, (const ElfW(Sym) **) extra); | |
46 | case RTLD_DL_LINKMAP: | |
47 | return _dl_addr (address, info, (struct link_map **) extra, NULL); | |
48 | } | |
49 | } | |
5f21997b UD |
50 | # ifdef SHARED |
51 | strong_alias (__dladdr1, dladdr1) | |
52 | # endif | |
53 | #endif |