70d12a18f2
already define _KERNEL to get to this and I'm about to add hooks to libkvm to access per-CPU data. MFC after: 1 week
81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/*-
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* Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
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* Copyright (c) Peter Wemm <peter@netplex.com.au>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: src/sys/alpha/include/pcpu.h,v 1.15 2004/11/05 19:16:44 jhb
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* $FreeBSD$
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*/
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#ifndef _MACHINE_PCPU_H_
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#define _MACHINE_PCPU_H_
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#include <machine/pte.h>
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#define PCPU_MD_FIELDS \
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pd_entry_t *pc_segbase; /* curthread segbase */ \
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struct pmap *pc_curpmap; /* pmap of curthread */ \
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u_int32_t pc_next_asid; /* next ASID to alloc */ \
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u_int32_t pc_asid_generation; /* current ASID generation */ \
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u_int pc_pending_ipis; /* the IPIs pending to this CPU */ \
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void *pc_boot_stack;
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#ifdef _KERNEL
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#ifdef SMP
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static __inline struct pcpu*
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get_pcpup(void)
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{
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/*
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* FREEBSD_DEVELOPERS_FIXME
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* In multiprocessor case, store/retrieve the pcpu structure
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* address for current CPU in scratch register for fast access.
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*
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* In this routine, read the scratch register to retrieve the PCPU
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* structure for this CPU
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*/
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struct pcpu *ret;
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/* ret should contain the pointer to the PCPU structure for this CPU */
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return(ret);
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}
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#define PCPUP ((struct pcpu *)get_pcpup())
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#else
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/* Uni processor systems */
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extern struct pcpu *pcpup;
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#define PCPUP pcpup
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#endif /* SMP */
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#define PCPU_ADD(member, value) (PCPUP->pc_ ## member += (value))
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#define PCPU_GET(member) (PCPUP->pc_ ## member)
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#define PCPU_INC(member) PCPU_ADD(member, 1)
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#define PCPU_PTR(member) (&PCPUP->pc_ ## member)
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#define PCPU_SET(member,value) (PCPUP->pc_ ## member = (value))
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#define PCPU_LAZY_INC(member) (++PCPUP->pc_ ## member)
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#endif /* _KERNEL */
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#endif /* !_MACHINE_PCPU_H_ */
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