1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2019 The FreeBSD Foundation
5 *
6 * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
7 * under sponsorship from the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#ifdef __i386__
32#include <i386/pcpu_aux.h>
33#else /* !__i386__ */
34
35#ifndef _MACHINE_PCPU_AUX_H_
36#define _MACHINE_PCPU_AUX_H_
37
38#ifndef _KERNEL
39#error "Not for userspace"
40#endif
41
42#ifndef _SYS_PCPU_H_
43#error "Do not include machine/pcpu_aux.h directly"
44#endif
45
46/* Required for counters(9) to work on x86. */
47_Static_assert(sizeof(struct pcpu) == UMA_PCPU_ALLOC_SIZE, "fix pcpu size");
48
49extern struct pcpu *__pcpu;
50extern struct pcpu temp_bsp_pcpu;
51
52static __inline __pure2 struct thread *
53__curthread(void)
54{
55 struct thread *td;
56
57 __asm("movq %%gs:%c1,%0" : "=r" (td)
58 : "i" (offsetof(struct pcpu, pc_curthread)));
59 return (td);
60}
61#define curthread (__curthread())
62#define curpcb (&curthread->td_md.md_pcb)
63
64#endif /* _MACHINE_PCPU_AUX_H_ */
65
66#endif /* __i386__ */