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 * $FreeBSD$ 28 */ 29 30 #ifndef _MACHINE_PCPU_H_ 31 #define _MACHINE_PCPU_H_ 32 33 #ifdef _KERNEL 34 35 #include <machine/frame.h> 36 37 #define ALT_STACK_SIZE 128 38 39 struct vmspace; 40 41 /* 42 * Inside the kernel, the globally reserved register g7 is used to 43 * point at the globaldata structure. 44 */ 45 #define PCPU_MD_FIELDS \ 46 struct pcup *pc_prvspace; 47 48 struct pcb; 49 struct pcpu; 50 51 extern struct pcpu *pcpup; 52 extern struct pcpu __pcpu; 53 54 #define PCPU_GET(member) (__pcpu.pc_ ## member) 55 56 /* 57 * XXX The implementation of this operation should be made atomic 58 * with respect to preemption. 59 */ 60 #define PCPU_ADD(member, value) (__pcpu.pc_ ## member += (value)) 61 #define PCPU_INC(member) PCPU_ADD(member, 1) 62 #define PCPU_PTR(member) (&__pcpu.pc_ ## member) 63 #define PCPU_SET(member,value) (__pcpu.pc_ ## member = (value)) 64 65 #endif /* _KERNEL */ 66 67 #endif /* !_MACHINE_PCPU_H_ */ 68