blob: ce53567dab33c2f00b89b4069235abd4651811a6 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/* Multiple versions of memcpy. AARCH64 version.
Copyright (C) 2017-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
/* Define multiple versions only for the definition in libc. */
#if IS_IN (libc)
/* Redefine memcpy so that the compiler won't complain about the type
mismatch with the IFUNC selector in strong_alias, below. */
# undef memcpy
# define memcpy __redirect_memcpy
# include <string.h>
# include <init-arch.h>
extern __typeof (__redirect_memcpy) __libc_memcpy;
extern __typeof (__redirect_memcpy) __memcpy_generic attribute_hidden;
extern __typeof (__redirect_memcpy) __memcpy_thunderx attribute_hidden;
extern __typeof (__redirect_memcpy) __memcpy_thunderx2 attribute_hidden;
extern __typeof (__redirect_memcpy) __memcpy_a64fx attribute_hidden;
extern __typeof (__redirect_memcpy) __memcpy_sve attribute_hidden;
extern __typeof (__redirect_memcpy) __memcpy_mops attribute_hidden;
static inline __typeof (__redirect_memcpy) *
select_memcpy_ifunc (void)
{
INIT_ARCH ();
if (mops)
return __memcpy_mops;
if (sve && HAVE_AARCH64_SVE_ASM)
{
if (IS_A64FX (midr))
return __memcpy_a64fx;
return prefer_sve_ifuncs ? __memcpy_sve : __memcpy_generic;
}
if (IS_THUNDERX (midr))
return __memcpy_thunderx;
if (IS_THUNDERX2 (midr) || IS_THUNDERX2PA (midr))
return __memcpy_thunderx2;
return __memcpy_generic;
}
libc_ifunc (__libc_memcpy, select_memcpy_ifunc ());
# undef memcpy
strong_alias (__libc_memcpy, memcpy);
#endif
|
