1 | /* Multiple versions of memcpy. PowerPC64 version. |
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 | /* Redefine memcpy so that the compiler won't complain about the type |
24 | mismatch with the IFUNC selector in strong_alias, below. */ |
25 | # undef memcpy |
26 | # define memcpy __redirect_memcpy |
27 | # include <string.h> |
28 | # include "init-arch.h" |
29 | |
30 | extern __typeof (__redirect_memcpy) __libc_memcpy; |
31 | |
32 | extern __typeof (__redirect_memcpy) __memcpy_ppc attribute_hidden; |
33 | extern __typeof (__redirect_memcpy) __memcpy_power4 attribute_hidden; |
34 | extern __typeof (__redirect_memcpy) __memcpy_cell attribute_hidden; |
35 | extern __typeof (__redirect_memcpy) __memcpy_power6 attribute_hidden; |
36 | extern __typeof (__redirect_memcpy) __memcpy_a2 attribute_hidden; |
37 | extern __typeof (__redirect_memcpy) __memcpy_power7 attribute_hidden; |
38 | extern __typeof (__redirect_memcpy) __memcpy_power8_cached attribute_hidden; |
39 | # if defined __LITTLE_ENDIAN__ |
40 | extern __typeof (__redirect_memcpy) __memcpy_power10 attribute_hidden; |
41 | # endif |
42 | |
43 | libc_ifunc (__libc_memcpy, |
44 | # if defined __LITTLE_ENDIAN__ |
45 | (hwcap2 & PPC_FEATURE2_ARCH_3_1 && hwcap & PPC_FEATURE_HAS_VSX) |
46 | ? __memcpy_power10 : |
47 | # endif |
48 | (hwcap2 & PPC_FEATURE2_ARCH_2_07 |
49 | && hwcap & PPC_FEATURE_HAS_ALTIVEC |
50 | && use_cached_memopt) |
51 | ? __memcpy_power8_cached : |
52 | (hwcap & PPC_FEATURE_ARCH_2_06 |
53 | && hwcap & PPC_FEATURE_HAS_ALTIVEC) |
54 | ? __memcpy_power7 : |
55 | (hwcap & PPC_FEATURE_ARCH_2_06) |
56 | ? __memcpy_a2 : |
57 | (hwcap & PPC_FEATURE_ARCH_2_05) |
58 | ? __memcpy_power6 : |
59 | (hwcap & PPC_FEATURE_CELL_BE) |
60 | ? __memcpy_cell : |
61 | (hwcap & PPC_FEATURE_POWER4) |
62 | ? __memcpy_power4 |
63 | : __memcpy_ppc); |
64 | |
65 | #undef memcpy |
66 | strong_alias (__libc_memcpy, memcpy); |
67 | libc_hidden_ver (__libc_memcpy, memcpy); |
68 | #endif |
69 | |