blob: b6bbedbb79e20567f1d740c864362a0d862d9bc6 (
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
|
/* Handle AT_HWCAP2. Linux/x86 version.
Copyright (C) 2023-2024 Free Software Foundation, Inc.
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/>. */
/* The following must match the kernel's <asm/hwcap2.h>. */
#define HWCAP2_RING3MWAIT (1 << 0)
#define HWCAP2_FSGSBASE (1 << 1)
static inline void
dl_check_hwcap2 (struct cpu_features *cpu_features)
{
if ((GLRO(dl_hwcap2) & HWCAP2_FSGSBASE) != 0)
CPU_FEATURE_SET_ACTIVE (cpu_features, FSGSBASE);
}
|
