1 /* Multiple versions of memset. AARCH64 version.
2 Copyright (C) 2017-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
19 /* Define multiple versions only for the definition in libc. */
22 /* Redefine memset so that the compiler won't complain about the type
23 mismatch with the IFUNC selector in strong_alias, below. */
25 # define memset __redirect_memset
27 # include <init-arch.h>
29 extern __typeof (__redirect_memset
) __libc_memset
;
31 extern __typeof (__redirect_memset
) __memset_falkor attribute_hidden
;
32 extern __typeof (__redirect_memset
) __memset_emag attribute_hidden
;
33 extern __typeof (__redirect_memset
) __memset_kunpeng attribute_hidden
;
34 extern __typeof (__redirect_memset
) __memset_a64fx attribute_hidden
;
35 extern __typeof (__redirect_memset
) __memset_generic attribute_hidden
;
37 static inline __typeof (__redirect_memset
) *
38 select_memset_ifunc (void)
42 if (sve
&& HAVE_AARCH64_SVE_ASM
)
44 if (IS_A64FX (midr
) && zva_size
== 256)
45 return __memset_a64fx
;
46 return __memset_generic
;
49 if (IS_KUNPENG920 (midr
))
50 return __memset_kunpeng
;
52 if ((IS_FALKOR (midr
) || IS_PHECDA (midr
)) && zva_size
== 64)
53 return __memset_falkor
;
55 if (IS_EMAG (midr
) && zva_size
== 64)
58 return __memset_generic
;
61 libc_ifunc (__libc_memset
, select_memset_ifunc ());
64 strong_alias (__libc_memset
, memset
);