1/*-
2 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 *	from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27
27 * $FreeBSD: releng/11.0/sys/arm64/include/pcpu.h 285311 2015-07-09 11:32:29Z zbb $
28 */
29
30#ifndef	_MACHINE_PCPU_H_
31#define	_MACHINE_PCPU_H_
32
33#include <machine/cpu.h>
34#include <machine/cpufunc.h>
35
36#define	ALT_STACK_SIZE	128
37
38#define	PCPU_MD_FIELDS							\
39	u_int	pc_acpi_id;	/* ACPI CPU id */		\
40	u_int	pc_midr;	/* stored MIDR value */	\
41	char __pad[121]
42
43#ifdef _KERNEL
44
45struct pcb;
46struct pcpu;
47
48static inline struct pcpu *
49get_pcpu(void)
50{
51	struct pcpu *pcpu;
52
53	__asm __volatile("mov	%0, x18" : "=&r"(pcpu));
54	return (pcpu);
55}
56
57static inline struct thread *
58get_curthread(void)
59{
60	struct thread *td;
61
62	__asm __volatile("ldr	%0, [x18]" : "=&r"(td));
63	return (td);
64}
65
66#define	curthread get_curthread()
67
68#define	PCPU_GET(member)	(get_pcpu()->pc_ ## member)
69#define	PCPU_ADD(member, value)	(get_pcpu()->pc_ ## member += (value))
70#define	PCPU_INC(member)	PCPU_ADD(member, 1)
71#define	PCPU_PTR(member)	(&get_pcpu()->pc_ ## member)
72#define	PCPU_SET(member,value)	(get_pcpu()->pc_ ## member = (value))
73
74#endif	/* _KERNEL */
75
76#endif	/* !_MACHINE_PCPU_H_ */
77