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authorH.J. Lu <hjl.tools@gmail.com>2024-01-09 12:23:25 -0800
committerH.J. Lu <hjl.tools@gmail.com>2024-01-10 05:19:32 -0800
commita1bbee9fd17a84d4b550f8405d5e4d31ff24f87d (patch)
tree3980c753794e021e191ad986a8673cd700a69af4 /sysdeps/unix/sysv/linux/x86
parentb45115a6665e271411c73d83f8933ff059e39f05 (diff)
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x86-64/cet: Move dl-cet.[ch] to x86_64 directories
Since CET is only enabled for x86-64, move dl-cet.[ch] to x86_64 directories. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/unix/sysv/linux/x86')
-rw-r--r--sysdeps/unix/sysv/linux/x86/dl-cet.h63
1 files changed, 0 insertions, 63 deletions
diff --git a/sysdeps/unix/sysv/linux/x86/dl-cet.h b/sysdeps/unix/sysv/linux/x86/dl-cet.h
deleted file mode 100644
index c10773a..0000000
--- a/sysdeps/unix/sysv/linux/x86/dl-cet.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/* Linux/x86 CET initializers function.
- Copyright (C) 2018-2024 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/>. */
-
-#include <sys/prctl.h>
-#include <asm/prctl.h>
-
-static __always_inline int
-dl_cet_disable_cet (unsigned int cet_feature)
-{
- if (cet_feature != GNU_PROPERTY_X86_FEATURE_1_SHSTK)
- return -1;
- long long int kernel_feature = ARCH_SHSTK_SHSTK;
- return (int) INTERNAL_SYSCALL_CALL (arch_prctl, ARCH_SHSTK_DISABLE,
- kernel_feature);
-}
-
-static __always_inline int
-dl_cet_lock_cet (unsigned int cet_feature)
-{
- if (cet_feature != GNU_PROPERTY_X86_FEATURE_1_SHSTK)
- return -1;
- /* Lock all SHSTK features. */
- long long int kernel_feature = -1;
- return (int) INTERNAL_SYSCALL_CALL (arch_prctl, ARCH_SHSTK_LOCK,
- kernel_feature);
-}
-
-static __always_inline unsigned int
-dl_cet_get_cet_status (void)
-{
- unsigned long long kernel_feature;
- unsigned int status = 0;
- if (INTERNAL_SYSCALL_CALL (arch_prctl, ARCH_SHSTK_STATUS,
- &kernel_feature) == 0)
- {
- if ((kernel_feature & ARCH_SHSTK_SHSTK) != 0)
- status = GNU_PROPERTY_X86_FEATURE_1_SHSTK;
- }
- return status;
-}
-
-/* Enable shadow stack with a macro to avoid shadow stack underflow. */
-#define ENABLE_X86_CET(cet_feature) \
- if ((cet_feature & GNU_PROPERTY_X86_FEATURE_1_SHSTK)) \
- { \
- long long int kernel_feature = ARCH_SHSTK_SHSTK; \
- INTERNAL_SYSCALL_CALL (arch_prctl, ARCH_SHSTK_ENABLE, \
- kernel_feature); \
- }