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101 lines
4.0 KiB
C
101 lines
4.0 KiB
C
/* $NetBSD: linux_futex.h,v 1.2 2005/12/11 12:20:19 christos Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (c) 2005 Emmanuel Dreyfus, all rights reserved.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Emmanuel Dreyfus
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* 4. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LINUX_FUTEX_H
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#define _LINUX_FUTEX_H
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#define LINUX_FUTEX_WAIT 0
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#define LINUX_FUTEX_WAKE 1
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#define LINUX_FUTEX_FD 2 /* unused */
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#define LINUX_FUTEX_REQUEUE 3
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#define LINUX_FUTEX_CMP_REQUEUE 4
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#define LINUX_FUTEX_WAKE_OP 5
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#define LINUX_FUTEX_LOCK_PI 6
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#define LINUX_FUTEX_UNLOCK_PI 7
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#define LINUX_FUTEX_TRYLOCK_PI 8
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#define LINUX_FUTEX_WAIT_BITSET 9
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#define LINUX_FUTEX_WAKE_BITSET 10
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#define LINUX_FUTEX_WAIT_REQUEUE_PI 11
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#define LINUX_FUTEX_CMP_REQUEUE_PI 12
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#define LINUX_FUTEX_LOCK_PI2 13
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#define LINUX_FUTEX_PRIVATE_FLAG 128
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#define LINUX_FUTEX_CLOCK_REALTIME 256
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#define LINUX_FUTEX_CMD_MASK ~(LINUX_FUTEX_PRIVATE_FLAG | \
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LINUX_FUTEX_CLOCK_REALTIME)
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#define FUTEX_OP_SET 0 /* *(int *)UADDR2 = OPARG; */
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#define FUTEX_OP_ADD 1 /* *(int *)UADDR2 += OPARG; */
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#define FUTEX_OP_OR 2 /* *(int *)UADDR2 |= OPARG; */
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#define FUTEX_OP_ANDN 3 /* *(int *)UADDR2 &= ~OPARG; */
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#define FUTEX_OP_XOR 4 /* *(int *)UADDR2 ^= OPARG; */
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#define FUTEX_OP_OPARG_SHIFT 8 /* Use (1 << OPARG) instead of OPARG. */
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#define FUTEX_OP_CMP_EQ 0 /* if (oldval == CMPARG) wake */
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#define FUTEX_OP_CMP_NE 1 /* if (oldval != CMPARG) wake */
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#define FUTEX_OP_CMP_LT 2 /* if (oldval < CMPARG) wake */
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#define FUTEX_OP_CMP_LE 3 /* if (oldval <= CMPARG) wake */
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#define FUTEX_OP_CMP_GT 4 /* if (oldval > CMPARG) wake */
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#define FUTEX_OP_CMP_GE 5 /* if (oldval >= CMPARG) wake */
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#define FUTEX_WAITERS 0x80000000
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#define FUTEX_OWNER_DIED 0x40000000
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#define FUTEX_TID_MASK 0x3fffffff
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#define FUTEX_BITSET_MATCH_ANY 0xffffffff
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/* robust futexes */
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struct linux_robust_list {
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l_uintptr_t next;
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};
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struct linux_robust_list_head {
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struct linux_robust_list list;
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l_long futex_offset;
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l_uintptr_t pending_list;
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};
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int futex_xchgl(int oparg, uint32_t *uaddr, int *oldval);
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int futex_addl(int oparg, uint32_t *uaddr, int *oldval);
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int futex_orl(int oparg, uint32_t *uaddr, int *oldval);
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int futex_andl(int oparg, uint32_t *uaddr, int *oldval);
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int futex_xorl(int oparg, uint32_t *uaddr, int *oldval);
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int futex_wake(struct thread *td, uint32_t *uaddr, int val, bool shared);
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void release_futexes(struct thread *,
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struct linux_emuldata *);
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#endif /* !_LINUX_FUTEX_H */
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