thread stage 6: Move thread stack management from the proc structure to
[dragonfly.git] / sys / sys / systm.h
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1/*-
2 * Copyright (c) 1982, 1988, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * @(#)systm.h 8.7 (Berkeley) 3/29/95
39 * $FreeBSD: src/sys/sys/systm.h,v 1.111.2.18 2002/12/17 18:04:02 sam Exp $
1de703da 40 * $DragonFly: src/sys/sys/systm.h,v 1.2 2003/06/17 04:28:59 dillon Exp $
984263bc
MD
41 */
42
43#ifndef _SYS_SYSTM_H_
44#define _SYS_SYSTM_H_
45
46#include <machine/atomic.h>
47#include <machine/cpufunc.h>
48#include <sys/callout.h>
49
50extern int securelevel; /* system security level (see init(8)) */
51
52extern int cold; /* nonzero if we are doing a cold boot */
53extern const char *panicstr; /* panic message */
54extern int dumping; /* system is dumping */
55extern int safepri; /* safe ipl when cold or panicing */
56extern char version[]; /* system version */
57extern char copyright[]; /* system copyright */
58
59extern int nswap; /* size of swap space */
60
61extern int selwait; /* select timeout address */
62
63extern u_char curpriority; /* priority of current process */
64
65extern int physmem; /* physical memory */
66
67extern dev_t dumpdev; /* dump device */
68extern long dumplo; /* offset into dumpdev */
69
70extern dev_t rootdev; /* root device */
71extern dev_t rootdevs[2]; /* possible root devices */
72extern char *rootdevnames[2]; /* names of possible root devices */
73extern struct vnode *rootvp; /* vnode equivalent to above */
74
75extern int boothowto; /* reboot flags, from console subsystem */
76extern int bootverbose; /* nonzero to print verbose messages */
77
78extern int maxusers; /* system tune hint */
79
80#ifdef INVARIANTS /* The option is always available */
81#define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
82#define SPLASSERT(level, msg) __CONCAT(__CONCAT(spl,level),assert)(msg)
83#define CONDSPLASSERT(cond, level, msg) do { \
84 if (cond) \
85 SPLASSERT(level, msg); \
86} while (0)
87#else
88#define KASSERT(exp,msg)
89#define SPLASSERT(level, msg)
90#define CONDSPLASSERT(cond, level, msg)
91#endif
92
93/*
94 * General function declarations.
95 */
96
97struct clockframe;
98struct malloc_type;
99struct proc;
100struct timeval;
101struct tty;
102struct uio;
103
104void Debugger __P((const char *msg));
105int dumpstatus __P((vm_offset_t addr, off_t count));
106int nullop __P((void));
107int eopnotsupp __P((void));
108int einval __P((void));
109int seltrue __P((dev_t dev, int which, struct proc *p));
110int ureadc __P((int, struct uio *));
111void *hashinit __P((int count, struct malloc_type *type, u_long *hashmask));
112void *phashinit __P((int count, struct malloc_type *type, u_long *nentries));
113
114void cpu_boot __P((int));
115void cpu_rootconf __P((void));
116extern uint32_t crc32_tab[];
117uint32_t crc32(const void *buf, size_t size);
118void init_param1 __P((void));
119void init_param2 __P((int physpages));
120void tablefull __P((const char *));
121int addlog __P((const char *, ...)) __printflike(1, 2);
122int kvprintf __P((char const *, void (*)(int, void*), void *, int,
123 _BSD_VA_LIST_)) __printflike(1, 0);
124int log __P((int, const char *, ...)) __printflike(2, 3);
125void logwakeup __P((void));
126void log_console __P((struct uio *));
127int printf __P((const char *, ...)) __printflike(1, 2);
128int snprintf __P((char *, size_t, const char *, ...)) __printflike(3, 4);
129int sprintf __P((char *buf, const char *, ...)) __printflike(2, 3);
130int uprintf __P((const char *, ...)) __printflike(1, 2);
131int vprintf __P((const char *, _BSD_VA_LIST_)) __printflike(1, 0);
132int vsnprintf __P((char *, size_t, const char *, _BSD_VA_LIST_)) __printflike(3, 0);
133int vsprintf __P((char *buf, const char *, _BSD_VA_LIST_)) __printflike(2, 0);
134int ttyprintf __P((struct tty *, const char *, ...)) __printflike(2, 3);
135int sscanf __P((const char *, char const *, ...));
136int vsscanf __P((const char *, char const *, _BSD_VA_LIST_));
137long strtol __P((const char *, char **, int));
138u_long strtoul __P((const char *, char **, int));
139quad_t strtoq __P((const char *, char **, int));
140u_quad_t strtouq __P((const char *, char **, int));
141
142void bcopy __P((const void *from, void *to, size_t len));
143void ovbcopy __P((const void *from, void *to, size_t len));
144
145#ifdef __i386__
146extern void (*bzero) __P((void *buf, size_t len));
147#else
148void bzero __P((void *buf, size_t len));
149#endif
150
151void *memcpy __P((void *to, const void *from, size_t len));
152
153int copystr __P((const void *kfaddr, void *kdaddr, size_t len,
154 size_t *lencopied));
155int copyinstr __P((const void *udaddr, void *kaddr, size_t len,
156 size_t *lencopied));
157int copyin __P((const void *udaddr, void *kaddr, size_t len));
158int copyout __P((const void *kaddr, void *udaddr, size_t len));
159
160int fubyte __P((const void *base));
161int subyte __P((void *base, int byte));
162int suibyte __P((void *base, int byte));
163long fuword __P((const void *base));
164int suword __P((void *base, long word));
165int fusword __P((void *base));
166int susword __P((void *base, int word));
167
168void realitexpire __P((void *));
169
170void hardclock __P((struct clockframe *frame));
171void softclock __P((void));
172void statclock __P((struct clockframe *frame));
173
174void startprofclock __P((struct proc *));
175void stopprofclock __P((struct proc *));
176void setstatclockrate __P((int hzrate));
177
178char *getenv __P((const char *name));
179#define testenv getenv
180#define freeenv
181int getenv_int __P((const char *name, int *data));
182int getenv_string __P((const char *name, char *data, int size));
183int getenv_quad __P((const char *name, quad_t *data));
184extern char *kern_envp;
185
186#ifdef APM_FIXUP_CALLTODO
187void adjust_timeout_calltodo __P((struct timeval *time_change));
188#endif /* APM_FIXUP_CALLTODO */
189
190#include <sys/libkern.h>
191
192/* Initialize the world */
193void consinit __P((void));
194void cpu_initclocks __P((void));
195void nchinit __P((void));
196void usrinfoinit __P((void));
197void vntblinit __P((void));
198
199/* Finalize the world. */
200void shutdown_nice __P((int));
201
202/*
203 * Kernel to clock driver interface.
204 */
205void inittodr __P((time_t base));
206void resettodr __P((void));
207void startrtclock __P((void));
208
209/* Timeouts */
210typedef void timeout_t __P((void *)); /* timeout function type */
211#define CALLOUT_HANDLE_INITIALIZER(handle) \
212 { NULL }
213
214void callout_handle_init __P((struct callout_handle *));
215struct callout_handle timeout __P((timeout_t *, void *, int));
216void untimeout __P((timeout_t *, void *, struct callout_handle));
217
218/* Interrupt management */
219
220/*
221 * For the alpha arch, some of these functions are static __inline, and
222 * the others should be.
223 */
224#ifdef __i386__
225void setdelayed __P((void));
226void setsoftast __P((void));
227void setsoftcambio __P((void));
228void setsoftcamnet __P((void));
229void setsoftclock __P((void));
230void setsoftcrypto __P((void));
231void setsoftnet __P((void));
232void setsofttty __P((void));
233void setsoftvm __P((void));
234void setsofttq __P((void));
235void schedsoftcamnet __P((void));
236void schedsoftcambio __P((void));
237void schedsoftnet __P((void));
238void schedsofttty __P((void));
239void schedsoftvm __P((void));
240void schedsofttq __P((void));
241intrmask_t softclockpending __P((void));
242void spl0 __P((void));
243intrmask_t splbio __P((void));
244intrmask_t splcam __P((void));
245intrmask_t splclock __P((void));
246intrmask_t splcrypto __P((void));
247intrmask_t splhigh __P((void));
248intrmask_t splimp __P((void));
249intrmask_t splnet __P((void));
250intrmask_t splsoftcam __P((void));
251intrmask_t splsoftcambio __P((void));
252intrmask_t splsoftcamnet __P((void));
253intrmask_t splsoftclock __P((void));
254intrmask_t splsofttty __P((void));
255intrmask_t splsoftvm __P((void));
256intrmask_t splsofttq __P((void));
257intrmask_t splstatclock __P((void));
258intrmask_t spltty __P((void));
259intrmask_t splvm __P((void));
260void splx __P((intrmask_t ipl));
261void splz __P((void));
262#endif /* __i386__ */
263
264#ifdef __alpha__
265#include <machine/ipl.h>
266#endif
267
268#ifdef INVARIANT_SUPPORT
269void splbioassert __P((const char *msg));
270void splcamassert __P((const char *msg));
271void splclockassert __P((const char *msg));
272void splcryptoassert __P((const char *msg));
273void splhighassert __P((const char *msg));
274void splimpassert __P((const char *msg));
275void splnetassert __P((const char *msg));
276void splsoftcamassert __P((const char *msg));
277void splsoftcambioassert __P((const char *msg));
278void splsoftcamnetassert __P((const char *msg));
279void splsoftclockassert __P((const char *msg));
280void splsoftttyassert __P((const char *msg));
281void splsoftvmassert __P((const char *msg));
282void splsofttqassert __P((const char *msg));
283void splstatclockassert __P((const char *msg));
284void splttyassert __P((const char *msg));
285void splvmassert __P((const char *msg));
286#endif /* INVARIANT_SUPPORT */
287
288/*
289 * XXX It's not clear how "machine independent" these will be yet, but
290 * they are used all over the place especially in pci drivers. We would
291 * have to modify lots of drivers since <machine/cpufunc.h> no longer
292 * implicitly causes these to be defined when it #included <machine/spl.h>
293 */
294extern intrmask_t bio_imask; /* group of interrupts masked with splbio() */
295extern intrmask_t cam_imask; /* group of interrupts masked with splcam() */
296extern intrmask_t net_imask; /* group of interrupts masked with splimp() */
297extern intrmask_t stat_imask; /* interrupts masked with splstatclock() */
298extern intrmask_t tty_imask; /* group of interrupts masked with spltty() */
299
300/* Read only */
301extern const intrmask_t soft_imask; /* interrupts masked with splsoft*() */
302extern const intrmask_t softnet_imask; /* interrupt masked with splnet() */
303extern const intrmask_t softtty_imask; /* interrupt masked with splsofttty() */
304
305/*
306 * Various callout lists.
307 */
308
309/* Exit callout list declarations. */
310typedef void (*exitlist_fn) __P((struct proc *procp));
311
312int at_exit __P((exitlist_fn function));
313int rm_at_exit __P((exitlist_fn function));
314
315/* Fork callout list declarations. */
316typedef void (*forklist_fn) __P((struct proc *parent, struct proc *child,
317 int flags));
318
319int at_fork __P((forklist_fn function));
320int rm_at_fork __P((forklist_fn function));
321
322/*
323 * Not exactly a callout LIST, but a callout entry.
324 * Allow an external module to define a hardware watchdog tickler.
325 * Normally a process would do this, but there are times when the
326 * kernel needs to be able to hold off the watchdog, when the process
327 * is not active, e.g., when dumping core.
328 */
329typedef void (*watchdog_tickle_fn) __P((void));
330
331extern watchdog_tickle_fn wdog_tickler;
332
333/*
334 * Common `proc' functions are declared here so that proc.h can be included
335 * less often.
336 */
337int tsleep __P((void *chan, int pri, const char *wmesg, int timo));
338int asleep __P((void *chan, int pri, const char *wmesg, int timo));
339int await __P((int pri, int timo));
340void wakeup __P((void *chan));
341void wakeup_one __P((void *chan));
342
343/*
344 * Common `dev_t' stuff are declared here to avoid #include poisoning
345 */
346
347int major(dev_t x);
348int minor(dev_t x);
349dev_t makedev(int x, int y);
350udev_t dev2udev(dev_t x);
351dev_t udev2dev(udev_t x, int b);
352int uminor(udev_t dev);
353int umajor(udev_t dev);
354udev_t makeudev(int x, int y);
355#endif /* !_SYS_SYSTM_H_ */