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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2022 Dmitry Chagin <dchagin@FreeBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#ifdef COMPAT_LINUX32
#include <machine/../linux32/linux.h>
#include <machine/../linux32/linux32_proto.h>
#else
#include <machine/../linux/linux.h>
#include <machine/../linux/linux_proto.h>
#endif
enum linux_rseq_cpu_id_state {
LINUX_RSEQ_CPU_ID_UNINITIALIZED = -1,
LINUX_RSEQ_CPU_ID_REGISTRATION_FAILED = -2,
};
enum linux_rseq_flags {
LINUX_RSEQ_FLAG_UNREGISTER = (1 << 0),
};
enum linux_rseq_cs_flags_bit {
LINUX_RSEQ_CS_FLAG_NO_RESTART_ON_PREEMPT_BIT = 0,
LINUX_RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL_BIT = 1,
LINUX_RSEQ_CS_FLAG_NO_RESTART_ON_MIGRATE_BIT = 2,
};
enum linux_rseq_cs_flags {
LINUX_RSEQ_CS_FLAG_NO_RESTART_ON_PREEMPT =
(1U << LINUX_RSEQ_CS_FLAG_NO_RESTART_ON_PREEMPT_BIT),
LINUX_RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL =
(1U << LINUX_RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL_BIT),
LINUX_RSEQ_CS_FLAG_NO_RESTART_ON_MIGRATE =
(1U << LINUX_RSEQ_CS_FLAG_NO_RESTART_ON_MIGRATE_BIT),
};
struct linux_rseq_cs {
uint32_t version;
uint32_t flags;
uint64_t start_ip;
uint64_t post_commit_offset;
uint64_t abort_ip;
} __attribute__((aligned(4 * sizeof(uint64_t))));
struct linux_rseq {
uint32_t cpu_id_start;
uint32_t cpu_id;
uint64_t rseq_cs;
uint32_t flags;
} __attribute__((aligned(4 * sizeof(uint64_t))));
int
linux_rseq(struct thread *td, struct linux_rseq_args *args)
{
return (ENOSYS);
}
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