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Diffstat (limited to 'sysdeps/x86/cet-control.h')
| -rw-r--r-- | sysdeps/x86/cet-control.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/sysdeps/x86/cet-control.h b/sysdeps/x86/cet-control.h new file mode 100644 index 0000000000..e163a7f55b --- /dev/null +++ b/sysdeps/x86/cet-control.h @@ -0,0 +1,41 @@ +/* x86 CET tuning. + This file is part of the GNU C Library. + Copyright (C) 2018-2020 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 _CET_CONTROL_H +#define _CET_CONTROL_H + +/* For each CET feature, IBT and SHSTK, valid control values. */ +enum dl_x86_cet_control +{ + /* Enable CET features based on ELF property note. */ + cet_elf_property = 0, + /* Always enable CET features. */ + cet_always_on, + /* Always disable CET features. */ + cet_always_off, + /* Enable CET features permissively. */ + cet_permissive +}; + +struct dl_x86_feature_control +{ + enum dl_x86_cet_control ibt : 2; + enum dl_x86_cet_control shstk : 2; +}; + +#endif /* cet-control.h */ |