source: rtems/cpukit/libnetworking/sys/systm.h @ 689516cc

/*-
 * Copyright (c) 1982, 1988, 1991, 1993
 *      The Regents of the University of California.  All rights reserved.
 * (c) UNIX System Laboratories, Inc.
 * All or some portions of this file are derived from material licensed
 * to the University of California by American Telephone and Telegraph
 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
 * the permission of UNIX System Laboratories, Inc.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 *      @(#)systm.h     8.7 (Berkeley) 3/29/95
 * $Id$
 */

#ifndef _SYS_SYSTM_H_
#define _SYS_SYSTM_H_

#include <rtems/rtems_bsdnet_internal.h> /* for __BSD_VA_LIST__ */
#include <machine/cpufunc.h>

extern int securelevel;         /* system security level (see init(8)) */

extern int cold;                /* nonzero if we are doing a cold boot */
extern const char *panicstr;    /* panic message */
extern char version[];          /* system version */
extern char copyright[];        /* system copyright */

extern int selwait;             /* select timeout address */

extern u_char curpriority;      /* priority of current process */

extern int physmem;             /* physical memory */

extern dev_t dumpdev;           /* dump device */
extern long dumplo;             /* offset into dumpdev */

extern dev_t rootdev;           /* root device */
extern struct vnode *rootvp;    /* vnode equivalent to above */

extern dev_t swapdev;           /* swapping device */
extern struct vnode *swapdev_vp;/* vnode equivalent to above */

extern int boothowto;           /* reboot flags, from console subsystem */
extern int bootverbose;         /* nonzero to print verbose messages */

/*
 * General function declarations.
 */
void    Debugger(const char *msg);
int     nullop(void);
int     eopnotsupp(void);
int     einval(void);
int     seltrue(dev_t dev, int which, struct proc *p);
int     ureadc(int, struct uio *);
void    *hashinit(int count, int type, u_long *hashmask);
void    *phashinit(int count, int type, u_long *nentries);

void    panic(const char *, ...) __dead2;
void    boot(int) __dead2;
void    cpu_boot(int);
void    tablefull(const char *);
int     addlog(const char *, ...);
int     kvprintf(char const *, void (*)(int, void*), void *, int,
                      _BSD_VA_LIST_);
void    log(int, const char *, ...);
int     printf(const char *, ...);
int     sprintf(char *buf, const char *, ...);
void    uprintf(const char *, ...);
void    ttyprintf(struct tty *, const char *, ...);

#define bcopy(f,t,n) memcpy((t),(f),(n))
#define bzero(p,n) memset((p),(0),(n))

int     copystr(const void *kfaddr, void *kdaddr, size_t len,
                size_t *lencopied);
int     copyinstr(const void *udaddr, void *kaddr, size_t len,
                size_t *lencopied);
#ifndef __rtems__
/* FIXME: these clash with defines in rtems_bsdnet_internal.h */
int     copyin(const void *udaddr, void *kaddr, size_t len);
int     copyout(const void *kaddr, void *udaddr, size_t len);
#endif

int     fubyte(const void *base);
int     fuibyte(const void *base);
int     subyte(void *base, int byte);
int     suibyte(void *base, int byte);
int     fuword(const void *base);
int     suword(void *base, int word);
int     susword(void *base, int word);

int     hzto(struct timeval *tv);
void    realitexpire(void *);

struct clockframe;
void    hardclock(struct clockframe *frame);
void    softclock(void);
void    statclock(struct clockframe *frame);

void    startprofclock(struct proc *);
void    stopprofclock(struct proc *);
void    setstatclockrate(int hzrate);

void    hardupdate(long);
void    hardpps(struct timeval *tvp, long usec);

#include <sys/libkern.h>

/* Initialize the world */
extern void consinit(void);
extern void usrinfoinit(void);
extern void cpu_initclocks(void);
extern void vntblinit(void);
extern void nchinit(void);

/* Finalize the world. */
void    shutdown_nice(void);

/*
 * Kernel to clock driver interface.
 */
void    inittodr(time_t base);
void    resettodr(void);
void    startrtclock(void);

/* Timeouts */
typedef void (timeout_t)(void *); /* actual timeout function type */
typedef timeout_t *timeout_func_t; /* a pointer to this type */

void timeout(timeout_func_t, void *, int);
void untimeout(timeout_func_t, void *);
void    logwakeup(void);

/* Various other callout lists that modules might want to know about */
/* shutdown callout list definitions */
typedef void (*bootlist_fn)(int,void *);
int at_shutdown(bootlist_fn function, void *arg, int);
int rm_at_shutdown(bootlist_fn function, void *arg);
#define SHUTDOWN_PRE_SYNC 0
#define SHUTDOWN_POST_SYNC 1

/* forking */ /* XXX not yet */
typedef void (*forklist_fn)(struct proc *parent,struct proc *child,int flags);
int at_fork(forklist_fn function);
int rm_at_fork(forklist_fn function);

/* exiting */
typedef void (*exitlist_fn)(struct proc *procp);
int at_exit(exitlist_fn function);
int rm_at_exit(exitlist_fn function);

/* Not exactly a callout LIST, but a callout entry..                    */
/* Allow an external module to define a hardware watchdog tickler       */
/* Normally a process would do this, but there are times when the       */
/* kernel needs to be able to hold off the watchdog, when the process   */
/* is not active, e.g. when dumping core. Costs us a whole 4 bytes to   */
/* make this generic. the variable is in kern_shutdown.c */
typedef void (*watchdog_tickle_fn)(void);
extern watchdog_tickle_fn wdog_tickler;


/* 
 * Common `proc' functions are declared here so that proc.h can be included
 * less often.
 */
int     tsleep(void *chan, int pri, char *wmesg, int timo);
void    wakeup(void *chan);

#endif /* !_SYS_SYSTM_H_ */