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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 1.10 2003/07/23 02:30:24 dillon Exp $
46 #include <machine/atomic.h>
47 #include <machine/cpufunc.h>
48 #include <sys/callout.h>
50 extern int securelevel; /* system security level (see init(8)) */
52 extern int cold; /* nonzero if we are doing a cold boot */
53 extern const char *panicstr; /* panic message */
54 extern int dumping; /* system is dumping */
55 extern int safepri; /* safe ipl when cold or panicing */
56 extern char version[]; /* system version */
57 extern char copyright[]; /* system copyright */
59 extern int nswap; /* size of swap space */
61 extern int selwait; /* select timeout address */
63 extern u_char curpriority; /* priority of current process */
65 extern int physmem; /* physical memory */
67 extern dev_t dumpdev; /* dump device */
68 extern long dumplo; /* offset into dumpdev */
70 extern dev_t rootdev; /* root device */
71 extern dev_t rootdevs[2]; /* possible root devices */
72 extern char *rootdevnames[2]; /* names of possible root devices */
73 extern struct vnode *rootvp; /* vnode equivalent to above */
75 extern int boothowto; /* reboot flags, from console subsystem */
76 extern int bootverbose; /* nonzero to print verbose messages */
78 extern int maxusers; /* system tune hint */
80 extern int ncpus; /* total number of cpus (real, hyper, virtual)*/
82 #ifdef INVARIANTS /* The option is always available */
83 #define KASSERT(exp,msg) do { if (!(exp)) panic msg; } while (0)
84 #define KKASSERT(exp) if (!(exp)) panic("assertion: " #exp " in " __FUNCTION__)
85 #define SPLASSERT(level, msg) __CONCAT(__CONCAT(spl,level),assert)(msg)
86 #define CONDSPLASSERT(cond, level, msg) do { \
88 SPLASSERT(level, msg); \
91 #define KASSERT(exp,msg)
93 #define SPLASSERT(level, msg)
94 #define CONDSPLASSERT(cond, level, msg)
98 * General function declarations.
111 void Debugger __P((const char *msg));
112 void mi_gdinit __P((struct globaldata *gd, int cpu));
113 int dumpstatus __P((vm_offset_t addr, off_t count));
114 int nullop __P((void));
115 int eopnotsupp __P((void));
116 int einval __P((void));
117 int seltrue __P((dev_t dev, int which, struct thread *td));
118 int ureadc __P((int, struct uio *));
119 void *hashinit __P((int count, struct malloc_type *type, u_long *hashmask));
120 void *phashinit __P((int count, struct malloc_type *type, u_long *nentries));
122 void cpu_boot __P((int));
123 void cpu_rootconf __P((void));
124 extern uint32_t crc32_tab[];
125 uint32_t crc32(const void *buf, size_t size);
126 void init_param1 __P((void));
127 void init_param2 __P((int physpages));
128 void tablefull __P((const char *));
129 int addlog __P((const char *, ...)) __printflike(1, 2);
130 int kvprintf __P((char const *, void (*)(int, void*), void *, int,
131 _BSD_VA_LIST_)) __printflike(1, 0);
132 int log __P((int, const char *, ...)) __printflike(2, 3);
133 void logwakeup __P((void));
134 void log_console __P((struct uio *));
135 int printf __P((const char *, ...)) __printflike(1, 2);
136 int snprintf __P((char *, size_t, const char *, ...)) __printflike(3, 4);
137 int sprintf __P((char *buf, const char *, ...)) __printflike(2, 3);
138 int uprintf __P((const char *, ...)) __printflike(1, 2);
139 int vprintf __P((const char *, _BSD_VA_LIST_)) __printflike(1, 0);
140 int vsnprintf __P((char *, size_t, const char *, _BSD_VA_LIST_)) __printflike(3, 0);
141 int vsprintf __P((char *buf, const char *, _BSD_VA_LIST_)) __printflike(2, 0);
142 int ttyprintf __P((struct tty *, const char *, ...)) __printflike(2, 3);
143 int sscanf __P((const char *, char const *, ...));
144 int vsscanf __P((const char *, char const *, _BSD_VA_LIST_));
145 long strtol __P((const char *, char **, int));
146 u_long strtoul __P((const char *, char **, int));
147 quad_t strtoq __P((const char *, char **, int));
148 u_quad_t strtouq __P((const char *, char **, int));
151 * note: some functions commonly used by device drivers may be passed
152 * pointers to volatile storage, volatile set to avoid warnings.
154 void bcopy __P((volatile const void *from, volatile void *to, size_t len));
155 void ovbcopy __P((const void *from, void *to, size_t len));
158 extern void (*bzero) __P((volatile void *buf, size_t len));
160 void bzero __P((void *buf, size_t len));
163 void *memcpy __P((void *to, const void *from, size_t len));
165 int copystr __P((const void *kfaddr, void *kdaddr, size_t len,
167 int copyinstr __P((const void *udaddr, void *kaddr, size_t len,
169 int copyin __P((const void *udaddr, void *kaddr, size_t len));
170 int copyout __P((const void *kaddr, void *udaddr, size_t len));
172 int fubyte __P((const void *base));
173 int subyte __P((void *base, int byte));
174 int suibyte __P((void *base, int byte));
175 long fuword __P((const void *base));
176 int suword __P((void *base, long word));
177 int fusword __P((void *base));
178 int susword __P((void *base, int word));
180 void realitexpire __P((void *));
182 void hardclock __P((struct clockframe *frame));
183 void statclock __P((struct clockframe *frame));
185 void startprofclock __P((struct proc *));
186 void stopprofclock __P((struct proc *));
187 void setstatclockrate __P((int hzrate));
189 char *getenv __P((const char *name));
190 #define testenv getenv
192 int getenv_int __P((const char *name, int *data));
193 int getenv_string __P((const char *name, char *data, int size));
194 int getenv_quad __P((const char *name, quad_t *data));
195 extern char *kern_envp;
197 #ifdef APM_FIXUP_CALLTODO
198 void adjust_timeout_calltodo __P((struct timeval *time_change));
199 #endif /* APM_FIXUP_CALLTODO */
201 #include <sys/libkern.h>
203 /* Initialize the world */
204 void consinit __P((void));
205 void cpu_initclocks __P((void));
206 void nchinit __P((void));
207 void usrinfoinit __P((void));
208 void vntblinit __P((void));
210 /* Finalize the world. */
211 void shutdown_nice __P((int));
214 * Kernel to clock driver interface.
216 void inittodr __P((time_t base));
217 void resettodr __P((void));
218 void startrtclock __P((void));
221 typedef void timeout_t __P((void *)); /* timeout function type */
222 #define CALLOUT_HANDLE_INITIALIZER(handle) \
225 void callout_handle_init __P((struct callout_handle *));
226 struct callout_handle timeout __P((timeout_t *, void *, int));
227 void untimeout __P((timeout_t *, void *, struct callout_handle));
229 /* Interrupt management */
232 * For the alpha arch, some of these functions are static __inline, and
233 * the others should be.
236 void setdelayed __P((void));
237 void setsoftast __P((void));
238 void setsoftcambio __P((void));
239 void setsoftcamnet __P((void));
240 void setsoftclock __P((void));
241 void setsoftcrypto __P((void));
242 void setsoftnet __P((void));
243 void setsofttty __P((void));
244 void setsoftvm __P((void));
245 void setsofttq __P((void));
246 void schedsoftcamnet __P((void));
247 void schedsoftcambio __P((void));
248 void schedsoftnet __P((void));
249 void schedsofttty __P((void));
250 void schedsoftvm __P((void));
251 void schedsofttq __P((void));
252 intrmask_t softclockpending __P((void));
253 void spl0 __P((void));
254 intrmask_t splbio __P((void));
255 intrmask_t splcam __P((void));
256 intrmask_t splclock __P((void));
257 intrmask_t splcrypto __P((void));
258 intrmask_t splhigh __P((void));
259 intrmask_t splimp __P((void));
260 intrmask_t splnet __P((void));
261 intrmask_t splsoftcam __P((void));
262 intrmask_t splsoftcambio __P((void));
263 intrmask_t splsoftcamnet __P((void));
264 intrmask_t splsoftclock __P((void));
265 intrmask_t splsofttty __P((void));
266 intrmask_t splsoftvm __P((void));
267 intrmask_t splsofttq __P((void));
268 intrmask_t splstatclock __P((void));
269 intrmask_t spltty __P((void));
270 intrmask_t splvm __P((void));
271 void splx __P((intrmask_t ipl));
272 void splz __P((void));
273 #endif /* __i386__ */
276 #include <machine/ipl.h>
279 #ifdef INVARIANT_SUPPORT
280 void splbioassert __P((const char *msg));
281 void splcamassert __P((const char *msg));
282 void splclockassert __P((const char *msg));
283 void splcryptoassert __P((const char *msg));
284 void splhighassert __P((const char *msg));
285 void splimpassert __P((const char *msg));
286 void splnetassert __P((const char *msg));
287 void splsoftcamassert __P((const char *msg));
288 void splsoftcambioassert __P((const char *msg));
289 void splsoftcamnetassert __P((const char *msg));
290 void splsoftclockassert __P((const char *msg));
291 void splsoftttyassert __P((const char *msg));
292 void splsoftvmassert __P((const char *msg));
293 void splsofttqassert __P((const char *msg));
294 void splstatclockassert __P((const char *msg));
295 void splttyassert __P((const char *msg));
296 void splvmassert __P((const char *msg));
297 #endif /* INVARIANT_SUPPORT */
300 * XXX It's not clear how "machine independent" these will be yet, but
301 * they are used all over the place especially in pci drivers. We would
302 * have to modify lots of drivers since <machine/cpufunc.h> no longer
303 * implicitly causes these to be defined when it #included <machine/spl.h>
305 extern intrmask_t bio_imask; /* group of interrupts masked with splbio() */
306 extern intrmask_t cam_imask; /* group of interrupts masked with splcam() */
307 extern intrmask_t net_imask; /* group of interrupts masked with splimp() */
308 extern intrmask_t stat_imask; /* interrupts masked with splstatclock() */
309 extern intrmask_t tty_imask; /* group of interrupts masked with spltty() */
312 extern const intrmask_t soft_imask; /* interrupts masked with splsoft*() */
313 extern const intrmask_t softnet_imask; /* interrupt masked with splnet() */
314 extern const intrmask_t softtty_imask; /* interrupt masked with splsofttty() */
317 * Various callout lists.
320 /* Exit callout list declarations. */
321 typedef void (*exitlist_fn) __P((struct thread *td));
323 int at_exit __P((exitlist_fn function));
324 int rm_at_exit __P((exitlist_fn function));
326 /* Fork callout list declarations. */
327 typedef void (*forklist_fn) __P((struct proc *parent, struct proc *child,
330 int at_fork __P((forklist_fn function));
331 int rm_at_fork __P((forklist_fn function));
334 * Not exactly a callout LIST, but a callout entry.
335 * Allow an external module to define a hardware watchdog tickler.
336 * Normally a process would do this, but there are times when the
337 * kernel needs to be able to hold off the watchdog, when the process
338 * is not active, e.g., when dumping core.
340 typedef void (*watchdog_tickle_fn) __P((void));
342 extern watchdog_tickle_fn wdog_tickler;
345 * Common `proc' functions are declared here so that proc.h can be included
348 int tsleep __P((void *chan, int slpflags, const char *wmesg, int timo));
349 void wakeup __P((void *chan));
350 void wakeup_one __P((void *chan));
353 * Common `dev_t' stuff are declared here to avoid #include poisoning
358 dev_t makedev(int x, int y);
359 udev_t dev2udev(dev_t x);
360 dev_t udev2dev(udev_t x, int b);
361 int uminor(udev_t dev);
362 int umajor(udev_t dev);
363 udev_t makeudev(int x, int y);
364 #endif /* !_SYS_SYSTM_H_ */