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