1 | /* Multiple versions of memcpy. |
2 | Copyright (C) 2013-2024 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 memcpy before the initialization |
21 | happened. */ |
22 | #if defined SHARED && IS_IN (libc) |
23 | # undef memcpy |
24 | # define memcpy __redirect_memcpy |
25 | # include <string.h> |
26 | # include <shlib-compat.h> |
27 | # include "init-arch.h" |
28 | |
29 | extern __typeof (memcpy) __memcpy_ppc attribute_hidden; |
30 | extern __typeof (memcpy) __memcpy_cell attribute_hidden; |
31 | extern __typeof (memcpy) __memcpy_power6 attribute_hidden; |
32 | extern __typeof (memcpy) __memcpy_a2 attribute_hidden; |
33 | extern __typeof (memcpy) __memcpy_power7 attribute_hidden; |
34 | # undef memcpy |
35 | |
36 | /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle |
37 | ifunc symbol properly. */ |
38 | libc_ifunc_redirected (__redirect_memcpy, memcpy, |
39 | (hwcap & PPC_FEATURE_HAS_VSX) |
40 | ? __memcpy_power7 |
41 | : (hwcap & PPC_FEATURE_ARCH_2_06) |
42 | ? __memcpy_a2 |
43 | : (hwcap & PPC_FEATURE_ARCH_2_05) |
44 | ? __memcpy_power6 |
45 | : (hwcap & PPC_FEATURE_CELL_BE) |
46 | ? __memcpy_cell |
47 | : __memcpy_ppc); |
48 | #endif |
49 | |