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86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
/*-
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* Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
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* Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* Portions of this software were developed by SRI International and the
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* University of Cambridge Computer Laboratory under DARPA/AFRL contract
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* FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
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*
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* Portions of this software were developed by the University of Cambridge
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* Computer Laboratory as part of the CTSRD Project, with support from the
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* UK Higher Education Innovation Fund (HEIF).
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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: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27
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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/cpu.h>
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#include <machine/cpufunc.h>
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/* Keep in sync with db_show_mdpcpu() */
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#define PCPU_MD_FIELDS \
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struct pmap *pc_curpmap; /* Currently active pmap */ \
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uint32_t pc_pending_ipis; /* IPIs pending to this CPU */ \
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uint32_t pc_hart; /* Hart ID */ \
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char __pad[56] /* Pad to factor of PAGE_SIZE */
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#ifdef _KERNEL
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struct pcb;
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struct pcpu;
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static inline struct pcpu *
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get_pcpu(void)
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{
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struct pcpu *pcpu;
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__asm __volatile("mv %0, tp" : "=&r"(pcpu));
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return (pcpu);
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}
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static inline struct thread *
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get_curthread(void)
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{
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struct thread *td;
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__asm __volatile("ld %0, 0(tp)" : "=&r"(td));
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return (td);
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}
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#define curthread get_curthread()
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#define PCPU_GET(member) (get_pcpu()->pc_ ## member)
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#define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value))
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#define PCPU_PTR(member) (&get_pcpu()->pc_ ## member)
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#define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value))
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#endif /* _KERNEL */
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#endif /* !_MACHINE_PCPU_H_ */
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