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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 $
40 * $DragonFly: src/sys/sys/systm.h,v 1.17 2004/01/30 05:42:18 dillon Exp $
46 #ifndef _MACHINE_TYPES_H_
47 #include <machine/types.h>
49 #ifndef _MACHINE_STDARG_H_
50 #include <machine/stdarg.h>
52 #include <machine/atomic.h>
53 #include <machine/cpufunc.h>
54 #include <sys/callout.h>
56 extern int securelevel; /* system security level (see init(8)) */
58 extern int cold; /* nonzero if we are doing a cold boot */
59 extern const char *panicstr; /* panic message */
60 extern int dumping; /* system is dumping */
61 extern int safepri; /* safe ipl when cold or panicing */
62 extern char version[]; /* system version */
63 extern char copyright[]; /* system copyright */
65 extern int nswap; /* size of swap space */
67 extern int selwait; /* select timeout address */
69 extern u_char curpriority; /* priority of current process */
71 extern int physmem; /* physical memory */
73 extern dev_t dumpdev; /* dump device */
74 extern long dumplo; /* offset into dumpdev */
76 extern dev_t rootdev; /* root device */
77 extern dev_t rootdevs[2]; /* possible root devices */
78 extern char *rootdevnames[2]; /* names of possible root devices */
79 extern struct vnode *rootvp; /* vnode equivalent to above */
81 extern int boothowto; /* reboot flags, from console subsystem */
82 extern int bootverbose; /* nonzero to print verbose messages */
84 extern int maxusers; /* system tune hint */
86 extern int ncpus; /* total number of cpus (real, hyper, virtual)*/
88 #ifdef INVARIANTS /* The option is always available */
89 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
90 #define KKASSERT(exp) if (!(exp)) panic("assertion: " #exp " in %s", __FUNCTION__)
91 #define SPLASSERT(level, msg) __CONCAT(__CONCAT(spl,level),assert)(msg)
92 #define CONDSPLASSERT(cond, level, msg) do { \
94 SPLASSERT(level, msg); \
97 #define KASSERT(exp,msg)
99 #define SPLASSERT(level, msg)
100 #define CONDSPLASSERT(cond, level, msg)
104 * General function declarations.
117 void Debugger (const char *msg);
118 void backtrace(void);
119 void mi_gdinit (struct globaldata *gd, int cpu);
120 int dumpstatus (vm_offset_t addr, off_t count);
122 int eopnotsupp (void);
124 int seltrue (dev_t dev, int which, struct thread *td);
125 int ureadc (int, struct uio *);
126 void *hashinit (int count, struct malloc_type *type, u_long *hashmask);
127 void *phashinit (int count, struct malloc_type *type, u_long *nentries);
130 void cpu_rootconf (void);
131 extern uint32_t crc32_tab[];
132 uint32_t crc32(const void *buf, size_t size);
133 void init_param1 (void);
134 void init_param2 (int physpages);
135 void tablefull (const char *);
136 int addlog (const char *, ...) __printflike(1, 2);
137 int kvprintf (char const *, void (*)(int, void*), void *, int,
138 __va_list) __printflike(1, 0);
139 int log (int, const char *, ...) __printflike(2, 3);
140 void logwakeup (void);
141 void log_console (struct uio *);
142 int printf (const char *, ...) __printflike(1, 2);
143 int snprintf (char *, size_t, const char *, ...) __printflike(3, 4);
144 int sprintf (char *buf, const char *, ...) __printflike(2, 3);
145 int uprintf (const char *, ...) __printflike(1, 2);
146 int vprintf (const char *, __va_list) __printflike(1, 0);
147 int vsnprintf (char *, size_t, const char *, __va_list) __printflike(3, 0);
148 int vsprintf (char *buf, const char *, __va_list) __printflike(2, 0);
149 int ttyprintf (struct tty *, const char *, ...) __printflike(2, 3);
150 int sscanf (const char *, char const *, ...);
151 int vsscanf (const char *, char const *, __va_list);
152 long strtol (const char *, char **, int);
153 u_long strtoul (const char *, char **, int);
154 quad_t strtoq (const char *, char **, int);
155 u_quad_t strtouq (const char *, char **, int);
158 * note: some functions commonly used by device drivers may be passed
159 * pointers to volatile storage, volatile set to avoid warnings.
161 void bcopy (volatile const void *from, volatile void *to, size_t len);
162 void ovbcopy (const void *from, void *to, size_t len);
165 extern void (*bzero) (volatile void *buf, size_t len);
167 void bzero (void *buf, size_t len);
170 void *memcpy (void *to, const void *from, size_t len);
172 int copystr (const void *kfaddr, void *kdaddr, size_t len,
174 int copyinstr (const void *udaddr, void *kaddr, size_t len,
176 int copyin (const void *udaddr, void *kaddr, size_t len);
177 int copyout (const void *kaddr, void *udaddr, size_t len);
179 int fubyte (const void *base);
180 int subyte (void *base, int byte);
181 int suibyte (void *base, int byte);
182 long fuword (const void *base);
183 int suword (void *base, long word);
184 int fusword (void *base);
185 int susword (void *base, int word);
187 void realitexpire (void *);
188 void DELAY(int usec);
190 void startprofclock (struct proc *);
191 void stopprofclock (struct proc *);
192 void setstatclockrate (int hzrate);
194 char *getenv (const char *name);
195 #define testenv getenv
197 int getenv_int (const char *name, int *data);
198 int getenv_string (const char *name, char *data, int size);
199 int getenv_quad (const char *name, quad_t *data);
200 extern char *kern_envp;
202 #ifdef APM_FIXUP_CALLTODO
203 void adjust_timeout_calltodo (struct timeval *time_change);
204 #endif /* APM_FIXUP_CALLTODO */
206 #include <sys/libkern.h>
208 /* Initialize the world */
209 void consinit (void);
210 void cpu_initclocks (void);
212 void usrinfoinit (void);
213 void vntblinit (void);
215 /* Finalize the world. */
216 void shutdown_nice (int);
219 * Kernel to clock driver interface.
221 void inittodr (time_t base);
222 void resettodr (void);
223 void startrtclock (void);
226 typedef void timeout_t (void *); /* timeout function type */
227 #define CALLOUT_HANDLE_INITIALIZER(handle) \
230 void callout_handle_init (struct callout_handle *);
231 struct callout_handle timeout (timeout_t *, void *, int);
232 void untimeout (timeout_t *, void *, struct callout_handle);
234 /* Interrupt management */
237 * For the alpha arch, some of these functions are static __inline, and
238 * the others should be.
241 void setdelayed (void);
242 void setsoftast (void);
243 void setsoftcambio (void);
244 void setsoftcamnet (void);
245 void setsoftclock (void);
246 void setsoftcrypto (void);
247 void setsoftnet (void);
248 void setsofttty (void);
249 void setsoftvm (void);
250 void setsofttq (void);
251 void schedsoftcamnet (void);
252 void schedsoftcambio (void);
253 void schedsoftnet (void);
254 void schedsofttty (void);
255 void schedsoftvm (void);
256 void schedsofttq (void);
257 intrmask_t softclockpending (void);
259 intrmask_t splbio (void);
260 intrmask_t splcam (void);
261 intrmask_t splclock (void);
262 intrmask_t splcrypto (void);
263 intrmask_t splhigh (void);
264 intrmask_t splimp (void);
265 intrmask_t splnet (void);
266 intrmask_t splsoftcam (void);
267 intrmask_t splsoftcambio (void);
268 intrmask_t splsoftcamnet (void);
269 intrmask_t splsoftclock (void);
270 intrmask_t splsofttty (void);
271 intrmask_t splsoftvm (void);
272 intrmask_t splsofttq (void);
273 intrmask_t splstatclock (void);
274 intrmask_t spltty (void);
275 intrmask_t splvm (void);
276 void splx (intrmask_t ipl);
278 #endif /* __i386__ */
281 #include <machine/ipl.h>
284 #ifdef INVARIANT_SUPPORT
285 void splbioassert (const char *msg);
286 void splcamassert (const char *msg);
287 void splclockassert (const char *msg);
288 void splcryptoassert (const char *msg);
289 void splhighassert (const char *msg);
290 void splimpassert (const char *msg);
291 void splnetassert (const char *msg);
292 void splsoftcamassert (const char *msg);
293 void splsoftcambioassert (const char *msg);
294 void splsoftcamnetassert (const char *msg);
295 void splsoftclockassert (const char *msg);
296 void splsoftttyassert (const char *msg);
297 void splsoftvmassert (const char *msg);
298 void splsofttqassert (const char *msg);
299 void splstatclockassert (const char *msg);
300 void splttyassert (const char *msg);
301 void splvmassert (const char *msg);
302 #endif /* INVARIANT_SUPPORT */
305 * XXX It's not clear how "machine independent" these will be yet, but
306 * they are used all over the place especially in pci drivers. We would
307 * have to modify lots of drivers since <machine/cpufunc.h> no longer
308 * implicitly causes these to be defined when it #included <machine/spl.h>
310 extern intrmask_t bio_imask; /* group of interrupts masked with splbio() */
311 extern intrmask_t cam_imask; /* group of interrupts masked with splcam() */
312 extern intrmask_t net_imask; /* group of interrupts masked with splimp() */
313 extern intrmask_t stat_imask; /* interrupts masked with splstatclock() */
314 extern intrmask_t tty_imask; /* group of interrupts masked with spltty() */
317 extern const intrmask_t soft_imask; /* interrupts masked with splsoft*() */
318 extern const intrmask_t softnet_imask; /* interrupt masked with splnet() */
319 extern const intrmask_t softtty_imask; /* interrupt masked with splsofttty() */
322 * Various callout lists.
325 /* Exit callout list declarations. */
326 typedef void (*exitlist_fn) (struct thread *td);
328 int at_exit (exitlist_fn function);
329 int rm_at_exit (exitlist_fn function);
331 /* Fork callout list declarations. */
332 typedef void (*forklist_fn) (struct proc *parent, struct proc *child,
335 int at_fork (forklist_fn function);
336 int rm_at_fork (forklist_fn function);
339 * Not exactly a callout LIST, but a callout entry.
340 * Allow an external module to define a hardware watchdog tickler.
341 * Normally a process would do this, but there are times when the
342 * kernel needs to be able to hold off the watchdog, when the process
343 * is not active, e.g., when dumping core.
345 typedef void (*watchdog_tickle_fn) (void);
347 extern watchdog_tickle_fn wdog_tickler;
350 * Common `proc' functions are declared here so that proc.h can be included
353 int tsleep (void *chan, int slpflags, const char *wmesg, int timo);
354 void wakeup (void *chan);
355 void wakeup_one (void *chan);
358 * Common `dev_t' stuff are declared here to avoid #include poisoning
363 dev_t makedev(int x, int y);
364 udev_t dev2udev(dev_t x);
365 dev_t udev2dev(udev_t x, int b);
366 int uminor(udev_t dev);
367 int umajor(udev_t dev);
368 udev_t makeudev(int x, int y);
369 #endif /* !_SYS_SYSTM_H_ */