69244b69db
one pseudo per module (a restriction which will eventually be lifted) and isthus not in its final form.
117 lines
4.4 KiB
C
117 lines
4.4 KiB
C
/*-
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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* @(#)kernel.h 8.3 (Berkeley) 1/21/94
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* $Id: kernel.h,v 1.8 1995/03/17 22:02:05 wollman Exp $
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*/
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#ifndef _SYS_KERNEL_H_
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#define _SYS_KERNEL_H_
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/* Global variables for the kernel. */
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/* 1.1 */
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extern long hostid;
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extern char hostname[MAXHOSTNAMELEN];
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extern int hostnamelen;
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extern char domainname[MAXHOSTNAMELEN];
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extern int domainnamelen;
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extern char kernelname[MAXPATHLEN];
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/* 1.2 */
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extern volatile struct timeval mono_time;
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extern struct timeval boottime;
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extern struct timeval runtime;
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extern volatile struct timeval time;
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extern struct timezone tz; /* XXX */
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extern int tick; /* usec per tick (1000000 / hz) */
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extern int hz; /* system clock's frequency */
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extern int stathz; /* statistics clock's frequency */
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extern int profhz; /* profiling clock's frequency */
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extern int ticks;
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extern int lbolt; /* once a second sleep address */
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extern int tickdelta;
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extern long timedelta;
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/*
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* The following macros are used to declare global sets of objects, which
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* are collected by the linker into a `struct linker_set' as defined below.
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*
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* NB: the constants defined below must match those defined in
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* ld/ld.h. Since their calculation requires arithmetic, we
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* can't name them symbolically (e.g., 23 is N_SETT | N_EXT).
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*/
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#define MAKE_SET(set, sym, type) \
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asm(".stabs \"_" #set "\", " #type ", 0, 0, _" #sym)
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#define TEXT_SET(set, sym) MAKE_SET(set, sym, 23)
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#define DATA_SET(set, sym) MAKE_SET(set, sym, 25)
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#define BSS_SET(set, sym) MAKE_SET(set, sym, 27)
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#define ABS_SET(set, sym) MAKE_SET(set, sym, 21)
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#ifdef PSEUDO_LKM
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#include <sys/conf.h>
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#include <sys/exec.h>
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#include <sys/sysent.h>
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#include <sys/lkm.h>
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#define PSEUDO_SET(init, name) \
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extern struct linker_set MODVNOPS; \
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MOD_MISC(#name); \
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int name ## _load(struct lkm_table *lkmtp, int cmd) \
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{ init(); return 0; } \
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int name ## _unload(struct lkm_table *lkmtp, int cmd) \
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{ return EINVAL; } \
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int \
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name ## _mod(struct lkm_table *lkmtp, int cmd, int ver) { \
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DISPATCH(lkmtp, cmd, ver, name ## _load, name ## _unload, \
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nosys); }
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#else /* PSEUDO_LKM */
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#define PSEUDO_SET(sym, name) TEXT_SET(pseudo_set, sym)
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#endif /* PSEUDO_LKM */
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struct linker_set {
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int ls_length;
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caddr_t ls_items[1]; /* really ls_length of them, trailing NULL */
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};
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extern const struct linker_set execsw_set;
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#endif
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