1 | /* Multiple versions of strncpy. |
2 | Copyright (C) 2014-2024 Free Software Foundation, Inc. |
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 |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/ >. */ |
18 | |
19 | /* Define multiple versions only for definition in libc. */ |
20 | #if IS_IN (libc) |
21 | # define strncpy __redirect_strncpy |
22 | /* Omit the strncpy inline definitions because it would redefine strncpy. */ |
23 | # define __NO_STRING_INLINES |
24 | # include <string.h> |
25 | # include <shlib-compat.h> |
26 | # include "init-arch.h" |
27 | |
28 | extern __typeof (strncpy) __strncpy_ppc attribute_hidden; |
29 | extern __typeof (strncpy) __strncpy_power7 attribute_hidden; |
30 | extern __typeof (strncpy) __strncpy_power8 attribute_hidden; |
31 | # ifdef __LITTLE_ENDIAN__ |
32 | extern __typeof (strncpy) __strncpy_power9 attribute_hidden; |
33 | # endif |
34 | # undef strncpy |
35 | |
36 | /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle |
37 | ifunc symbol properly. */ |
38 | libc_ifunc_redirected (__redirect_strncpy, strncpy, |
39 | # ifdef __LITTLE_ENDIAN__ |
40 | (hwcap2 & PPC_FEATURE2_ARCH_3_00) && |
41 | (hwcap & PPC_FEATURE_HAS_VSX) |
42 | ? __strncpy_power9 : |
43 | # endif |
44 | (hwcap2 & PPC_FEATURE2_ARCH_2_07) |
45 | ? __strncpy_power8 |
46 | : (hwcap & PPC_FEATURE_ARCH_2_06) |
47 | ? __strncpy_power7 |
48 | : __strncpy_ppc); |
49 | |
50 | #endif |
51 | |