linux_futex.h revision 293493 
1/*	$NetBSD: linux_futex.h,v 1.2 2005/12/11 12:20:19 christos Exp $ */
2
3/*-
4 * Copyright (c) 2005 Emmanuel Dreyfus, all rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by Emmanuel Dreyfus
17 * 4. The name of the author may not be used to endorse or promote
18 *    products derived from this software without specific prior written
19 *    permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
23 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 *
33 * $FreeBSD: stable/10/sys/compat/linux/linux_futex.h 293493 2016-01-09 15:16:13Z dchagin $
34 */
35
36#ifndef _LINUX_FUTEX_H
37#define _LINUX_FUTEX_H
38
39extern LIST_HEAD(futex_list, futex) futex_list;
40extern struct mtx futex_mtx;
41
42#define LINUX_FUTEX_WAIT		 0
43#define LINUX_FUTEX_WAKE		 1
44#define LINUX_FUTEX_FD			 2	/* unused */
45#define LINUX_FUTEX_REQUEUE		 3
46#define LINUX_FUTEX_CMP_REQUEUE		 4
47#define LINUX_FUTEX_WAKE_OP		 5
48#define LINUX_FUTEX_LOCK_PI		 6
49#define LINUX_FUTEX_UNLOCK_PI		 7
50#define LINUX_FUTEX_TRYLOCK_PI		 8
51#define LINUX_FUTEX_WAIT_BITSET		 9
52#define LINUX_FUTEX_WAKE_BITSET		10
53#define LINUX_FUTEX_WAIT_REQUEUE_PI	11
54#define LINUX_FUTEX_CMP_REQUEUE_PI	12
55
56#define LINUX_FUTEX_PRIVATE_FLAG	128
57#define LINUX_FUTEX_CLOCK_REALTIME	256
58
59#define FUTEX_OP_SET            0	/* *(int *)UADDR2 = OPARG; */
60#define FUTEX_OP_ADD            1	/* *(int *)UADDR2 += OPARG; */
61#define FUTEX_OP_OR             2	/* *(int *)UADDR2 |= OPARG; */
62#define FUTEX_OP_ANDN           3	/* *(int *)UADDR2 &= ~OPARG; */
63#define FUTEX_OP_XOR            4	/* *(int *)UADDR2 ^= OPARG; */
64
65#define FUTEX_OP_OPARG_SHIFT    8	/* Use (1 << OPARG) instead of OPARG.  */
66
67#define FUTEX_OP_CMP_EQ         0	/* if (oldval == CMPARG) wake */
68#define FUTEX_OP_CMP_NE         1	/* if (oldval != CMPARG) wake */
69#define FUTEX_OP_CMP_LT         2	/* if (oldval < CMPARG) wake */
70#define FUTEX_OP_CMP_LE         3	/* if (oldval <= CMPARG) wake */
71#define FUTEX_OP_CMP_GT         4	/* if (oldval > CMPARG) wake */
72#define FUTEX_OP_CMP_GE         5	/* if (oldval >= CMPARG) wake */
73
74#define	FUTEX_WAITERS		0x80000000
75#define	FUTEX_OWNER_DIED	0x40000000
76#define	FUTEX_TID_MASK		0x3fffffff
77#define	FUTEX_BITSET_MATCH_ANY	0xffffffff
78
79void	release_futexes(struct thread *,
80			struct linux_emuldata *);
81
82#endif	/* !_LINUX_FUTEX_H */
83