Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#ifndef __SELFTESTS_X86_HELPERS_H
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#define __SELFTESTS_X86_HELPERS_H
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#include <signal.h>
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#include <string.h>
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#include <asm/processor-flags.h>
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#include "kselftest.h"
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static inline unsigned long get_eflags(void)
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{
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#ifdef __x86_64__
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return __builtin_ia32_readeflags_u64();
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#else
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return __builtin_ia32_readeflags_u32();
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#endif
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}
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static inline void set_eflags(unsigned long eflags)
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{
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#ifdef __x86_64__
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__builtin_ia32_writeeflags_u64(eflags);
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#else
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__builtin_ia32_writeeflags_u32(eflags);
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#endif
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}
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static inline void sethandler(int sig, void (*handler)(int, siginfo_t *, void *), int flags)
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{
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struct sigaction sa;
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memset(&sa, 0, sizeof(sa));
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sa.sa_sigaction = handler;
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sa.sa_flags = SA_SIGINFO | flags;
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sigemptyset(&sa.sa_mask);
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if (sigaction(sig, &sa, 0))
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ksft_exit_fail_msg("sigaction failed");
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}
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static inline void clearhandler(int sig)
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{
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struct sigaction sa;
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memset(&sa, 0, sizeof(sa));
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sa.sa_handler = SIG_DFL;
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sigemptyset(&sa.sa_mask);
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if (sigaction(sig, &sa, 0))
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ksft_exit_fail_msg("sigaction failed");
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}
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#endif /* __SELFTESTS_X86_HELPERS_H */
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