mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 06:50:07 +00:00
442983319b
Since shadow stack (SHSTK) is enabled in the Linux kernel without enabling indirect branch tracking (IBT), don't assume that SHSTK implies IBT. Use "CPU_FEATURE_ACTIVE (IBT)" to check if IBT is active and "CPU_FEATURE_ACTIVE (SHSTK)" to check if SHSTK is active.
44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/* Check CPU_FEATURE_ACTIVE on IBT and SHSTK.
|
|
Copyright (C) 2021-2023 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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 <x86intrin.h>
|
|
#include <sys/platform/x86.h>
|
|
#include <support/test-driver.h>
|
|
#include <support/xunistd.h>
|
|
|
|
/* Check that CPU_FEATURE_ACTIVE on SHSTK matches _get_ssp. */
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
if (_get_ssp () != 0)
|
|
{
|
|
if (CPU_FEATURE_ACTIVE (SHSTK))
|
|
return EXIT_SUCCESS;
|
|
}
|
|
else
|
|
{
|
|
if (!CPU_FEATURE_ACTIVE (SHSTK))
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|