blob: 955d4778a69db607dd754ba3a6e6257aaa212026 (
plain)
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
|
/* Initialize cpu feature data. PowerPC version.
Copyright (C) 2017-2018 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
<http://www.gnu.org/licenses/>. */
#include <stdint.h>
#include <cpu-features.h>
#if HAVE_TUNABLES
# include <elf/dl-tunables.h>
#endif
static inline void
init_cpu_features (struct cpu_features *cpu_features)
{
/* Default is to use aligned memory access on optimized function unless
tunables is enable, since for this case user can explicit disable
unaligned optimizations. */
#if HAVE_TUNABLES
int32_t cached_memfunc = TUNABLE_GET (glibc, tune, cached_memopt, int32_t,
NULL);
cpu_features->use_cached_memopt = (cached_memfunc > 0);
#else
cpu_features->use_cached_memopt = false;
#endif
}
|
