1/* $NetBSD: linux_futex.h,v 1.2 2005/12/11 12:20:19 christos Exp $ */ 2 3/*- 4 * SPDX-License-Identifier: BSD-4-Clause 5 * 6 * Copyright (c) 2005 Emmanuel Dreyfus, all rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Emmanuel Dreyfus 19 * 4. The name of the author may not be used to endorse or promote 20 * products derived from this software without specific prior written 21 * permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS'' 24 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 25 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 * 35 * $FreeBSD$ 36 */ 37 38#ifndef _LINUX_FUTEX_H 39#define _LINUX_FUTEX_H 40 41#define LINUX_FUTEX_WAIT 0 42#define LINUX_FUTEX_WAKE 1 43#define LINUX_FUTEX_FD 2 /* unused */ 44#define LINUX_FUTEX_REQUEUE 3 45#define LINUX_FUTEX_CMP_REQUEUE 4 46#define LINUX_FUTEX_WAKE_OP 5 47#define LINUX_FUTEX_LOCK_PI 6 48#define LINUX_FUTEX_UNLOCK_PI 7 49#define LINUX_FUTEX_TRYLOCK_PI 8 50#define LINUX_FUTEX_WAIT_BITSET 9 51#define LINUX_FUTEX_WAKE_BITSET 10 52#define LINUX_FUTEX_WAIT_REQUEUE_PI 11 53#define LINUX_FUTEX_CMP_REQUEUE_PI 12 54 55#define LINUX_FUTEX_PRIVATE_FLAG 128 56#define LINUX_FUTEX_CLOCK_REALTIME 256 57 58#define FUTEX_OP_SET 0 /* *(int *)UADDR2 = OPARG; */ 59#define FUTEX_OP_ADD 1 /* *(int *)UADDR2 += OPARG; */ 60#define FUTEX_OP_OR 2 /* *(int *)UADDR2 |= OPARG; */ 61#define FUTEX_OP_ANDN 3 /* *(int *)UADDR2 &= ~OPARG; */ 62#define FUTEX_OP_XOR 4 /* *(int *)UADDR2 ^= OPARG; */ 63 64#define FUTEX_OP_OPARG_SHIFT 8 /* Use (1 << OPARG) instead of OPARG. */ 65 66#define FUTEX_OP_CMP_EQ 0 /* if (oldval == CMPARG) wake */ 67#define FUTEX_OP_CMP_NE 1 /* if (oldval != CMPARG) wake */ 68#define FUTEX_OP_CMP_LT 2 /* if (oldval < CMPARG) wake */ 69#define FUTEX_OP_CMP_LE 3 /* if (oldval <= CMPARG) wake */ 70#define FUTEX_OP_CMP_GT 4 /* if (oldval > CMPARG) wake */ 71#define FUTEX_OP_CMP_GE 5 /* if (oldval >= CMPARG) wake */ 72 73#define FUTEX_WAITERS 0x80000000 74#define FUTEX_OWNER_DIED 0x40000000 75#define FUTEX_TID_MASK 0x3fffffff 76#define FUTEX_BITSET_MATCH_ANY 0xffffffff 77 78int futex_xchgl(int oparg, uint32_t *uaddr, int *oldval); 79int futex_addl(int oparg, uint32_t *uaddr, int *oldval); 80int futex_orl(int oparg, uint32_t *uaddr, int *oldval); 81int futex_andl(int oparg, uint32_t *uaddr, int *oldval); 82int futex_xorl(int oparg, uint32_t *uaddr, int *oldval); 83void release_futexes(struct thread *, 84 struct linux_emuldata *); 85 86#endif /* !_LINUX_FUTEX_H */ 87