1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23 /* All Rights Reserved */ 24 25 26 /* 27 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31 #ifndef _SYS_SYSTM_H 32 #define _SYS_SYSTM_H 33 34 #pragma ident "%Z%%M% %I% %E% SMI" 35 36 #include <sys/types.h> 37 #include <sys/t_lock.h> 38 #include <sys/proc.h> 39 #include <sys/dditypes.h> 40 41 #ifdef __cplusplus 42 extern "C" { 43 #endif 44 45 /* 46 * The pc_t is the type of the kernel's program counter. In general, a 47 * pc_t is a uintptr_t -- except for a sparcv9 kernel, in which case all 48 * instruction text is below 4G, and a pc_t is thus a uint32_t. 49 */ 50 #ifdef __sparcv9 51 typedef uint32_t pc_t; 52 #else 53 typedef uintptr_t pc_t; 54 #endif 55 56 /* 57 * Random set of variables used by more than one routine. 58 */ 59 60 #ifdef _KERNEL 61 #include <sys/varargs.h> 62 63 extern int hz; /* system clock rate */ 64 extern struct vnode *rootdir; /* pointer to vnode of root directory */ 65 extern struct vnode *devicesdir; /* pointer to /devices vnode */ 66 extern volatile clock_t lbolt; /* time in HZ since last boot */ 67 extern volatile int64_t lbolt64; /* lbolt computed as 64-bit value */ 68 extern int interrupts_unleashed; /* set after the spl0() in main() */ 69 70 extern char runin; /* scheduling flag */ 71 extern char runout; /* scheduling flag */ 72 extern char wake_sched; /* causes clock to wake swapper on next tick */ 73 extern char wake_sched_sec; /* causes clock to wake swapper after a sec */ 74 75 extern pgcnt_t maxmem; /* max available memory (pages) */ 76 extern pgcnt_t physmem; /* physical memory (pages) on this CPU */ 77 extern pfn_t physmax; /* highest numbered physical page present */ 78 extern pgcnt_t physinstalled; /* physical pages including PROM/boot use */ 79 80 extern caddr_t s_text; /* start of kernel text segment */ 81 extern caddr_t e_text; /* end of kernel text segment */ 82 extern caddr_t s_data; /* start of kernel text segment */ 83 extern caddr_t e_data; /* end of kernel text segment */ 84 85 extern pgcnt_t availrmem; /* Available resident (not swapable) */ 86 /* memory in pages. */ 87 extern pgcnt_t availrmem_initial; /* initial value of availrmem */ 88 extern pgcnt_t segspt_minfree; /* low water mark for availrmem in seg_spt */ 89 extern pgcnt_t freemem; /* Current free memory. */ 90 91 extern dev_t rootdev; /* device of the root */ 92 extern struct vnode *rootvp; /* vnode of root device */ 93 extern int root_is_svm; /* root is a mirrored device flag */ 94 extern char *volatile panicstr; /* panic string pointer */ 95 extern va_list panicargs; /* panic arguments */ 96 97 extern int rstchown; /* 1 ==> restrictive chown(2) semantics */ 98 extern int klustsize; 99 100 extern int abort_enable; /* Platform input-device abort policy */ 101 102 #ifdef C2_AUDIT 103 extern int audit_active; /* C2 auditing activate 1, absent 0. */ 104 #endif 105 106 extern int avenrun[]; /* array of load averages */ 107 108 extern char *isa_list; /* For sysinfo's isalist option */ 109 110 extern int noexec_user_stack; /* patchable via /etc/system */ 111 extern int noexec_user_stack_log; /* patchable via /etc/system */ 112 113 extern void report_stack_exec(proc_t *, caddr_t); 114 115 extern void startup(void); 116 extern void clkstart(void); 117 extern void post_startup(void); 118 extern void kern_setup1(void); 119 extern void ka_init(void); 120 extern void nodename_set(void); 121 122 /* 123 * for tod fault detection 124 */ 125 enum tod_fault_type { 126 TOD_REVERSED = 0, 127 TOD_STALLED, 128 TOD_JUMPED, 129 TOD_RATECHANGED, 130 TOD_NOFAULT 131 }; 132 133 extern time_t tod_validate(time_t); 134 extern void tod_fault_reset(void); 135 extern void plat_tod_fault(enum tod_fault_type); 136 137 #ifndef _LP64 138 #ifndef min 139 int min(int, int); 140 #endif 141 142 #ifndef max 143 int max(int, int); 144 #endif 145 146 uint_t umin(uint_t, uint_t); 147 uint_t umax(uint_t, uint_t); 148 #endif /* !_LP64 */ 149 int grow(caddr_t); 150 int grow_internal(caddr_t, uint_t); 151 int brk_internal(caddr_t, uint_t); 152 timeout_id_t timeout(void (*)(void *), void *, clock_t); 153 timeout_id_t realtime_timeout(void (*)(void *), void *, clock_t); 154 clock_t untimeout(timeout_id_t); 155 void delay(clock_t); 156 int delay_sig(clock_t); 157 int nodev(); 158 int nulldev(); 159 major_t getudev(void); 160 int cmpldev(dev32_t *, dev_t); 161 dev_t expldev(dev32_t); 162 int bcmp(const void *, const void *, size_t) __PURE; 163 int stoi(char **); 164 void numtos(ulong_t, char *); 165 size_t strlen(const char *) __PURE; 166 char *strcat(char *, const char *); 167 char *strncat(char *, const char *, size_t); 168 char *strcpy(char *, const char *); 169 char *strncpy(char *, const char *, size_t); 170 /* Need to be consistent with <string.h> C++ definitions */ 171 #if __cplusplus >= 199711L 172 extern const char *strchr(const char *, int); 173 #ifndef _STRCHR_INLINE 174 #define _STRCHR_INLINE 175 extern "C++" { 176 inline char *strchr(char *__s, int __c) { 177 return (char *)strchr((const char *)__s, __c); 178 } 179 } 180 #endif /* _STRCHR_INLINE */ 181 extern const char *strrchr(const char *, int); 182 #ifndef _STRRCHR_INLINE 183 #define _STRRCHR_INLINE 184 extern "C++" { 185 inline char *strrchr(char *__s, int __c) { 186 return (char *)strrchr((const char *)__s, __c); 187 } 188 } 189 #endif /* _STRRCHR_INLINE */ 190 extern const char *strstr(const char *, const char *); 191 #ifndef _STRSTR_INLINE 192 #define _STRSTR_INLINE 193 extern "C++" { 194 inline char *strstr(char *__s1, const char *__s2) { 195 return (char *)strstr((const char *)__s1, __s2); 196 } 197 } 198 #endif /* _STRSTR_INLINE */ 199 #else /* __cplusplus >= 199711L */ 200 char *strchr(const char *, int); 201 char *strrchr(const char *, int); 202 char *strstr(const char *, const char *); 203 #endif /* __cplusplus >= 199711L */ 204 char *strnrchr(const char *, int, size_t); 205 int strcmp(const char *, const char *) __PURE; 206 int strncmp(const char *, const char *, size_t) __PURE; 207 int strcasecmp(const char *, const char *) __PURE; 208 int strncasecmp(const char *, const char *, size_t) __PURE; 209 /* Need to be consistent with <string.h> C++ definitions */ 210 #if __cplusplus >= 199711L 211 extern const char *strpbrk(const char *, const char *); 212 #ifndef _STRPBRK_INLINE 213 #define _STRPBRK_INLINE 214 extern "C++" { 215 inline char *strpbrk(char *__s1, const char *__s2) { 216 return (char *)strpbrk((const char *)__s1, __s2); 217 } 218 } 219 #endif /* _STRPBRK_INLINE */ 220 #else /* __cplusplus >= 199711L */ 221 char *strpbrk(const char *, const char *); 222 #endif /* __cplusplus >= 199711L */ 223 int strident_valid(const char *); 224 void strident_canon(char *, size_t); 225 int getsubopt(char **optionsp, char * const *tokens, char **valuep); 226 char *append_subopt(const char *, size_t, char *, const char *); 227 int ffs(long); 228 int copyin(const void *, void *, size_t); 229 void copyin_noerr(const void *, void *, size_t); 230 int xcopyin(const void *, void *, size_t); 231 int xcopyin_nta(const void *, void *, size_t, int); 232 int copyout(const void *, void *, size_t); 233 void copyout_noerr(const void *, void *, size_t); 234 int xcopyout(const void *, void *, size_t); 235 int xcopyout_nta(const void *, void *, size_t, int); 236 int copyinstr(const char *, char *, size_t, size_t *); 237 int copyinstr_noerr(const char *, char *, size_t, size_t *); 238 int copyoutstr(const char *, char *, size_t, size_t *); 239 int copyoutstr_noerr(const char *, char *, size_t, size_t *); 240 int copystr(const char *, char *, size_t, size_t *); 241 void bcopy(const void *, void *, size_t); 242 void ucopy(const void *, void *, size_t); 243 void pgcopy(const void *, void *, size_t); 244 void ovbcopy(const void *, void *, size_t); 245 void bzero(void *, size_t); 246 void uzero(void *, size_t); 247 int kcopy(const void *, void *, size_t); 248 int kcopy_nta(const void *, void *, size_t, int); 249 int kzero(void *, size_t); 250 251 extern void *memset(void *, int, size_t); 252 extern void *memcpy(void *, const void *, size_t); 253 extern void *memmove(void *, const void *, size_t); 254 extern int memcmp(const void *, const void *, size_t); 255 256 int fuword8(const void *, uint8_t *); 257 int fuword16(const void *, uint16_t *); 258 int fuword32(const void *, uint32_t *); 259 int fulword(const void *, ulong_t *); 260 void fuword8_noerr(const void *, uint8_t *); 261 void fuword16_noerr(const void *, uint16_t *); 262 void fuword32_noerr(const void *, uint32_t *); 263 void fulword_noerr(const void *, ulong_t *); 264 265 #ifdef _LP64 266 int fuword64(const void *, uint64_t *); 267 void fuword64_noerr(const void *, uint64_t *); 268 #endif 269 270 int subyte(void *, uint8_t); 271 int suword8(void *, uint8_t); 272 int suword16(void *, uint16_t); 273 int suword32(void *, uint32_t); 274 int sulword(void *, ulong_t); 275 void subyte_noerr(void *, uint8_t); 276 void suword8_noerr(void *, uint8_t); 277 void suword16_noerr(void *, uint16_t); 278 void suword32_noerr(void *, uint32_t); 279 void sulword_noerr(void *, ulong_t); 280 281 #ifdef _LP64 282 int suword64(void *, uint64_t); 283 void suword64_noerr(void *, uint64_t); 284 #endif 285 286 #if !defined(_BOOT) 287 int setjmp(label_t *); 288 extern void longjmp(label_t *) 289 __NORETURN; 290 #pragma unknown_control_flow(setjmp) 291 #endif 292 293 caddr_t caller(void); 294 caddr_t callee(void); 295 int getpcstack(pc_t *, int); 296 int on_fault(label_t *); 297 void no_fault(void); 298 void halt(char *); 299 int scanc(size_t, uchar_t *, uchar_t *, uchar_t); 300 int movtuc(size_t, uchar_t *, uchar_t *, uchar_t *); 301 int splr(int); 302 int splhigh(void); 303 int splhi(void); 304 int splzs(void); 305 int spl0(void); 306 int spl6(void); 307 int spl7(void); 308 int spl8(void); 309 void splx(int); 310 void set_base_spl(void); 311 int __ipltospl(int); 312 313 void softcall_init(void); 314 void softcall(void (*)(void *), void *); 315 void softint(void); 316 317 extern void sync_icache(caddr_t, uint_t); 318 extern void sync_data_memory(caddr_t, size_t); 319 extern void hot_patch_kernel_text(caddr_t, uint32_t, uint_t); 320 321 void _insque(caddr_t, caddr_t); 322 void _remque(caddr_t); 323 324 /* casts to keep lint happy */ 325 #define insque(q, p) _insque((caddr_t)q, (caddr_t)p) 326 #define remque(q) _remque((caddr_t)q) 327 328 #pragma unknown_control_flow(on_fault) 329 330 struct timeval; 331 extern void uniqtime(struct timeval *); 332 struct timeval32; 333 extern void uniqtime32(struct timeval32 *); 334 335 uint_t page_num_pagesizes(void); 336 size_t page_get_pagesize(uint_t n); 337 338 extern int maxusers; 339 extern int pidmax; 340 341 extern void param_preset(void); 342 extern void param_calc(int); 343 extern void param_init(void); 344 extern void param_check(void); 345 346 #endif /* _KERNEL */ 347 348 /* 349 * Structure of the system-entry table. 350 * 351 * Changes to struct sysent should maintain binary compatibility with 352 * loadable system calls, although the interface is currently private. 353 * 354 * This means it should only be expanded on the end, and flag values 355 * should not be reused. 356 * 357 * It is desirable to keep the size of this struct a power of 2 for quick 358 * indexing. 359 */ 360 struct sysent { 361 char sy_narg; /* total number of arguments */ 362 #ifdef _LP64 363 unsigned short sy_flags; /* various flags as defined below */ 364 #else 365 unsigned char sy_flags; /* various flags as defined below */ 366 #endif 367 int (*sy_call)(); /* argp, rvalp-style handler */ 368 krwlock_t *sy_lock; /* lock for loadable system calls */ 369 int64_t (*sy_callc)(); /* C-style call hander or wrapper */ 370 }; 371 372 extern struct sysent sysent[]; 373 #ifdef _SYSCALL32_IMPL 374 extern struct sysent sysent32[]; 375 #endif 376 377 extern struct sysent nosys_ent; /* entry for invalid system call */ 378 379 #define NSYSCALL 256 /* number of system calls */ 380 381 #define LOADABLE_SYSCALL(s) (s->sy_flags & SE_LOADABLE) 382 #define LOADED_SYSCALL(s) (s->sy_flags & SE_LOADED) 383 384 /* 385 * sy_flags values 386 * Values 1, 2, and 4 were used previously for SETJUMP, ASYNC, and IOSYS. 387 */ 388 #define SE_32RVAL1 0x0 /* handler returns int32_t in rval1 */ 389 #define SE_32RVAL2 0x1 /* handler returns int32_t in rval2 */ 390 #define SE_64RVAL 0x2 /* handler returns int64_t in rvals */ 391 #define SE_RVAL_MASK 0x3 /* mask of rval_t bits */ 392 393 #define SE_LOADABLE 0x08 /* syscall is loadable */ 394 #define SE_LOADED 0x10 /* syscall is completely loaded */ 395 #define SE_NOUNLOAD 0x20 /* syscall never needs unload */ 396 #define SE_ARGC 0x40 /* syscall takes C-style args */ 397 398 /* 399 * Structure of the return-value parameter passed by reference to 400 * system entries. 401 */ 402 union rval { 403 struct { 404 int r_v1; 405 int r_v2; 406 } r_v; 407 off_t r_off; 408 offset_t r_offset; 409 time_t r_time; 410 int64_t r_vals; 411 }; 412 #define r_val1 r_v.r_v1 413 #define r_val2 r_v.r_v2 414 415 typedef union rval rval_t; 416 417 #ifdef _KERNEL 418 419 extern void reset_syscall_args(void); 420 extern int save_syscall_args(void); 421 extern uint_t get_syscall_args(klwp_t *lwp, long *argp, int *nargsp); 422 #ifdef _SYSCALL32_IMPL 423 extern uint_t get_syscall32_args(klwp_t *lwp, int *argp, int *nargp); 424 #endif 425 426 extern uint_t set_errno(uint_t error); 427 #pragma rarely_called(set_errno) 428 429 extern int64_t syscall_ap(void); 430 extern int64_t loadable_syscall(long, long, long, long, long, long, long, long); 431 extern int64_t nosys(void); 432 433 extern void swtch(void); 434 435 extern uint_t kcpc_key; /* TSD key for performance counter context */ 436 437 #ifdef __lint 438 extern int __lintzero; /* for spoofing lint */ 439 #endif 440 441 442 /* 443 * initname holds the path to init. It is defined by main.c, may be set by 444 * bootflags.c, and is used by main.c:exec_init(). 445 */ 446 #define INITNAME_SZ 32 447 #define INITARGS_SZ 80 448 449 extern char initname[INITNAME_SZ]; 450 extern char initargs[INITARGS_SZ]; 451 452 extern int exec_init(const char *, int, const char *); 453 454 #endif /* _KERNEL */ 455 456 #ifdef __cplusplus 457 } 458 #endif 459 460 #endif /* _SYS_SYSTM_H */ 461