2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2018 The FreeBSD Foundation
7 * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
8 * under sponsorship from the FreeBSD Foundation.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include "opt_compat.h"
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/imgact.h>
43 #include <vm/vm_param.h>
44 #include <vm/vm_extern.h>
47 #include <machine/atomic.h>
48 #include <machine/md_var.h>
50 #include <compat/linux/linux_emul.h>
51 #include <compat/linux/linux_futex.h>
59 futex_xchgl_slow0(vm_offset_t kva, void *arg)
64 *st->oldval = atomic_swap_int((int *)kva, st->oparg);
68 futex_xchgl(int oparg, uint32_t *uaddr, int *oldval)
74 if (cp_slow0((vm_offset_t)uaddr, sizeof(uint32_t), true,
75 futex_xchgl_slow0, &st) != 0)
81 futex_addl_slow0(vm_offset_t kva, void *arg)
86 *st->oldval = atomic_fetchadd_int((int *)kva, st->oparg);
90 futex_addl(int oparg, uint32_t *uaddr, int *oldval)
96 if (cp_slow0((vm_offset_t)uaddr, sizeof(uint32_t), true,
97 futex_addl_slow0, &st) != 0)
103 futex_orl_slow0(vm_offset_t kva, void *arg)
105 struct futex_st0 *st;
110 while (!atomic_fcmpset_int((int *)kva, &old, old | st->oparg))
116 futex_orl(int oparg, uint32_t *uaddr, int *oldval)
122 if (cp_slow0((vm_offset_t)uaddr, sizeof(uint32_t), true,
123 futex_orl_slow0, &st) != 0)
129 futex_andl_slow0(vm_offset_t kva, void *arg)
131 struct futex_st0 *st;
136 while (!atomic_fcmpset_int((int *)kva, &old, old & st->oparg))
142 futex_andl(int oparg, uint32_t *uaddr, int *oldval)
148 if (cp_slow0((vm_offset_t)uaddr, sizeof(uint32_t), true,
149 futex_andl_slow0, &st) != 0)
155 futex_xorl_slow0(vm_offset_t kva, void *arg)
157 struct futex_st0 *st;
162 while (!atomic_fcmpset_int((int *)kva, &old, old ^ st->oparg))
168 futex_xorl(int oparg, uint32_t *uaddr, int *oldval)
174 if (cp_slow0((vm_offset_t)uaddr, sizeof(uint32_t), true,
175 futex_xorl_slow0, &st) != 0)