2 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
26 * from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27
30 #ifndef _MACHINE_PCPU_H_
31 #define _MACHINE_PCPU_H_
35 #include <machine/frame.h>
37 #define ALT_STACK_SIZE 128
43 #define PCPU_MD_FIELDS
50 extern struct pcpu *pcpup;
51 extern struct pcpu __pcpu;
53 #define PCPU_GET(member) (__pcpu.pc_ ## member)
56 * XXX The implementation of this operation should be made atomic
57 * with respect to preemption.
59 #define PCPU_ADD(member, value) (__pcpu.pc_ ## member += (value))
60 #define PCPU_INC(member) PCPU_ADD(member, 1)
61 #define PCPU_PTR(member) (&__pcpu.pc_ ## member)
62 #define PCPU_SET(member,value) (__pcpu.pc_ ## member = (value))
66 #endif /* !_MACHINE_PCPU_H_ */