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/*-
* Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27
* $FreeBSD$
*/
#ifndef _MACHINE_GLOBALDATA_H_
#define _MACHINE_GLOBALDATA_H_
#ifdef _KERNEL
#include <sys/queue.h>
#define ALT_STACK_SIZE 128
/*
* This structure maps out the global data that needs to be kept on a
* per-cpu basis. genassym uses this to generate offsets for the assembler
* code, which also provides external symbols so that C can get at them as
* though they were really globals. This structure is pointed to by
* the per-cpu system value.
* Inside the kernel, the globally reserved register g7 is used to
* point at the globaldata structure.
*/
struct globaldata {
struct proc *gd_curproc; /* current process */
struct proc *gd_idleproc; /* idle process */
struct pcb *gd_curpcb; /* current pcb */
struct timeval gd_switchtime;
int gd_switchticks;
u_int gd_cpuid; /* this cpu number */
u_int gd_other_cpus; /* all other cpus */
SLIST_ENTRY(globaldata) gd_allcpu;
struct lock_list_entry *gd_spinlocks;
#ifdef KTR_PERCPU
volatile int gd_ktr_idx; /* Index into trace table */
char *gd_ktr_buf;
char gd_ktr_buf_data[0];
#endif
struct intr_queue *gd_iq;
struct intr_vector *gd_ivt;
/* Alternate global stack */
u_long gd_alt_stack[ALT_STACK_SIZE];
/* Watch point support. */
u_int gd_wp_insn;
u_long gd_wp_pstate;
u_long gd_wp_va;
int gd_wp_mask;
};
#endif /* _KERNEL */
#endif /* !_MACHINE_GLOBALDATA_H_ */
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