1 | /* Copyright (C) 2012-2019 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <sys/auxv.h> |
19 | #include <errno.h> |
20 | #include <ldsodefs.h> |
21 | |
22 | |
23 | unsigned long int |
24 | __getauxval (unsigned long int type) |
25 | { |
26 | #ifdef HAVE_AUX_VECTOR |
27 | ElfW(auxv_t) *p; |
28 | #endif |
29 | |
30 | if (type == AT_HWCAP) |
31 | return GLRO(dl_hwcap); |
32 | else if (type == AT_HWCAP2) |
33 | return GLRO(dl_hwcap2); |
34 | |
35 | #ifdef HAVE_AUX_VECTOR |
36 | for (p = GLRO(dl_auxv); p->a_type != AT_NULL; p++) |
37 | if (p->a_type == type) |
38 | return p->a_un.a_val; |
39 | #endif |
40 | |
41 | __set_errno (ENOENT); |
42 | return 0; |
43 | } |
44 | |
45 | weak_alias (__getauxval, getauxval) |
46 | libc_hidden_def (__getauxval) |
47 | |