1 | /* Multiple versions of memmove. AARCH64 version. |
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2 | Copyright (C) 2017-2022 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 libc. */ |
20 | |
21 | #if IS_IN (libc) |
22 | /* Redefine memmove so that the compiler won't complain about the type |
23 | mismatch with the IFUNC selector in strong_alias, below. */ |
24 | # undef memmove |
25 | # define memmove __redirect_memmove |
26 | # include <string.h> |
27 | # include <init-arch.h> |
28 | |
29 | extern __typeof (__redirect_memmove) __libc_memmove; |
30 | |
31 | extern __typeof (__redirect_memmove) __memmove_generic attribute_hidden; |
32 | extern __typeof (__redirect_memmove) __memmove_simd attribute_hidden; |
33 | extern __typeof (__redirect_memmove) __memmove_thunderx attribute_hidden; |
34 | extern __typeof (__redirect_memmove) __memmove_thunderx2 attribute_hidden; |
35 | extern __typeof (__redirect_memmove) __memmove_falkor attribute_hidden; |
36 | # if HAVE_AARCH64_SVE_ASM |
37 | extern __typeof (__redirect_memmove) __memmove_a64fx attribute_hidden; |
38 | # endif |
39 | |
40 | libc_ifunc (__libc_memmove, |
41 | (IS_THUNDERX (midr) |
42 | ? __memmove_thunderx |
43 | : (IS_FALKOR (midr) || IS_PHECDA (midr) |
44 | ? __memmove_falkor |
45 | : (IS_THUNDERX2 (midr) || IS_THUNDERX2PA (midr) |
46 | ? __memmove_thunderx2 |
47 | : (IS_NEOVERSE_N1 (midr) || IS_NEOVERSE_N2 (midr) |
48 | || IS_NEOVERSE_V1 (midr) |
49 | ? __memmove_simd |
50 | # if HAVE_AARCH64_SVE_ASM |
51 | : (IS_A64FX (midr) && sve |
52 | ? __memmove_a64fx |
53 | : __memmove_generic)))))); |
54 | # else |
55 | : __memmove_generic))))); |
56 | # endif |
57 | # undef memmove |
58 | strong_alias (__libc_memmove, memmove); |
59 | #endif |
60 |