1 | /* Multiple versions of memmove. PowerPC64 version. |
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 the definition in lib and for |
20 | DSO. In static binaries we need memmove before the initialization |
21 | happened. */ |
22 | #if defined SHARED && IS_IN (libc) |
23 | /* Redefine memmove so that the compiler won't complain about the type |
24 | mismatch with the IFUNC selector in strong_alias, below. */ |
25 | # undef memmove |
26 | # define memmove __redirect_memmove |
27 | # include <string.h> |
28 | # include "init-arch.h" |
29 | |
30 | extern __typeof (__redirect_memmove) __libc_memmove; |
31 | extern __typeof (__redirect_memmove) __memmove_ppc attribute_hidden; |
32 | extern __typeof (__redirect_memmove) __memmove_power7 attribute_hidden; |
33 | #ifdef __LITTLE_ENDIAN__ |
34 | extern __typeof (__redirect_memmove) __memmove_power10 attribute_hidden; |
35 | #endif |
36 | |
37 | libc_ifunc (__libc_memmove, |
38 | #ifdef __LITTLE_ENDIAN__ |
39 | (hwcap2 & PPC_FEATURE2_ARCH_3_1 |
40 | && hwcap2 & PPC_FEATURE2_HAS_ISEL |
41 | && hwcap & PPC_FEATURE_HAS_VSX) |
42 | ? __memmove_power10 : |
43 | #endif |
44 | (hwcap & PPC_FEATURE_ARCH_2_06 |
45 | && hwcap & PPC_FEATURE_HAS_ALTIVEC) |
46 | ? __memmove_power7 |
47 | : __memmove_ppc); |
48 | |
49 | #undef memmove |
50 | strong_alias (__libc_memmove, memmove); |
51 | libc_hidden_ver (__libc_memmove, memmove); |
52 | #else |
53 | # include <string/memmove.c> |
54 | #endif |
55 | |