mirror of
git://sourceware.org/git/glibc.git
synced 2025-03-06 20:58:33 +01:00
a194871b13
Clang does not define _Bool for -std=c++98:
/usr/include/bits/platform/features.h:31:19: error: unknown type name '_Bool'
31 | static __inline__ _Bool
| ^
Change _Bool to bool to silence clang++ error.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Florian Weimer <fweimer@redhat.com>
48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/* Inline functions for x86 CPU features.
|
|
This file is part of the GNU C Library.
|
|
Copyright (C) 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/>. */
|
|
|
|
#ifndef _SYS_PLATFORM_X86_H
|
|
# error "Never include <bits/platform/features.h> directly; use <sys/platform/x86.h> instead."
|
|
#endif
|
|
|
|
/* Bits in the feature_1 field in TCB. */
|
|
|
|
enum
|
|
{
|
|
x86_feature_1_ibt = 1U << 0,
|
|
x86_feature_1_shstk = 1U << 1
|
|
};
|
|
|
|
static __inline__ bool
|
|
x86_cpu_cet_active (unsigned int __index)
|
|
{
|
|
#ifdef __x86_64__
|
|
unsigned int __feature_1;
|
|
# ifdef __LP64__
|
|
__asm__ ("mov %%fs:72, %0" : "=r" (__feature_1));
|
|
# else
|
|
__asm__ ("mov %%fs:40, %0" : "=r" (__feature_1));
|
|
# endif
|
|
if (__index == x86_cpu_IBT)
|
|
return __feature_1 & x86_feature_1_ibt;
|
|
else
|
|
return __feature_1 & x86_feature_1_shstk;
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|