projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f753fa7d L |
1 | /* Initialize CPU feature data for Linux/x86. |
| 2 | This file is part of the GNU C Library. | |
| 6d7e8eda | 3 | Copyright (C) 2018-2023 Free Software Foundation, Inc. |
| f753fa7d L |
4 | |
| 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. | |
| 9 | ||
| 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. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 16 | License along with the GNU C Library; if not, see | |
| 5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
| f753fa7d L |
18 | |
| 19 | #if CET_ENABLED | |
| 394df381 L |
20 | # include <sys/prctl.h> |
| 21 | # include <asm/prctl.h> | |
| 22 | ||
| f753fa7d L |
23 | static inline int __attribute__ ((always_inline)) |
| 24 | get_cet_status (void) | |
| 25 | { | |
| 394df381 | 26 | unsigned long long cet_status[3]; |
| bc2eb932 | 27 | if (INTERNAL_SYSCALL_CALL (arch_prctl, ARCH_CET_STATUS, cet_status) == 0) |
| 394df381 | 28 | return cet_status[0]; |
| f753fa7d L |
29 | return 0; |
| 30 | } | |
| 31 | ||
| 32 | # ifndef SHARED | |
| 33 | static inline void | |
| 34 | x86_setup_tls (void) | |
| 35 | { | |
| 36 | __libc_setup_tls (); | |
| 674ea882 | 37 | THREAD_SETMEM (THREAD_SELF, header.feature_1, GL(dl_x86_feature_1)); |
| f753fa7d L |
38 | } |
| 39 | ||
| 40 | # define ARCH_SETUP_TLS() x86_setup_tls () | |
| 41 | # endif | |
| 42 | #endif | |
| 43 | ||
| 44 | #include <sysdeps/x86/cpu-features.c> |