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/11.2/sys/arm64/include/pcpu.h 306085 2016-09-21 09:45:14Z andrew $
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 uint64_t pc_clock; \
42 char __pad[113]
43
44 #ifdef _KERNEL
45
46 struct pcb;
47 struct pcpu;
48
49 static inline struct pcpu *
50 get_pcpu(void)
51 {
52 struct pcpu *pcpu;
53
54 __asm __volatile("mov %0, x18" : "=&r"(pcpu));
55 return (pcpu);
56 }
57
58 static inline struct thread *
59 get_curthread(void)
60 {
61 struct thread *td;
62
63 __asm __volatile("ldr %0, [x18]" : "=&r"(td));
64 return (td);
65 }
66
67 #define curthread get_curthread()
68
69 #define PCPU_GET(member) (get_pcpu()->pc_ ## member)
70 #define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value))
71 #define PCPU_INC(member) PCPU_ADD(member, 1)
72 #define PCPU_PTR(member) (&get_pcpu()->pc_ ## member)
73 #define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value))
74
75 #endif /* _KERNEL */
76
77 #endif /* !_MACHINE_PCPU_H_ */
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