79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
/*-
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* Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
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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: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27
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* $FreeBSD$
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*/
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#ifndef _MACHINE_GLOBALDATA_H_
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#define _MACHINE_GLOBALDATA_H_
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#ifdef _KERNEL
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#include <sys/queue.h>
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#include <machine/frame.h>
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#include <machine/intr_machdep.h>
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#define ALT_STACK_SIZE 128
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/*
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* This structure maps out the global data that needs to be kept on a
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* per-cpu basis. genassym uses this to generate offsets for the assembler
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* code, which also provides external symbols so that C can get at them as
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* though they were really globals. This structure is pointed to by
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* the per-cpu system value.
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* Inside the kernel, the globally reserved register g7 is used to
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* point at the globaldata structure.
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*/
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struct globaldata {
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struct thread *gd_curthread; /* current thread */
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struct thread *gd_idlethread; /* idle thread */
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struct pcb *gd_curpcb; /* current pcb */
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struct timeval gd_switchtime;
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int gd_switchticks;
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u_int gd_cpuid; /* this cpu number */
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u_int gd_other_cpus; /* all other cpus */
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SLIST_ENTRY(globaldata) gd_allcpu;
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struct lock_list_entry *gd_spinlocks;
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struct intr_queue gd_iq; /* interrupt queuq */
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u_long gd_alt_stack[ALT_STACK_SIZE]; /* alternate global stack */
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u_int gd_wp_insn; /* watch point support */
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u_long gd_wp_pstate;
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u_long gd_wp_va;
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int gd_wp_mask;
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#ifdef KTR_PERCPU
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int gd_ktr_idx; /* index into trace table */
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char *gd_ktr_buf;
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char gd_ktr_buf_data[0];
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#endif
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};
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#endif /* _KERNEL */
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#endif /* !_MACHINE_GLOBALDATA_H_ */
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