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 #if defined(__ia64) 85 extern caddr_t s_sdata; /* start of kernel small data segment */ 86 extern caddr_t e_sdata; /* end of kernel small data segment */ 87 #endif /* __ia64 */ 88 89 extern pgcnt_t availrmem; /* Available resident (not swapable) */ 90 /* memory in pages. */ 91 extern pgcnt_t availrmem_initial; /* initial value of availrmem */ 92 extern pgcnt_t segspt_minfree; /* low water mark for availrmem in seg_spt */ 93 extern pgcnt_t freemem; /* Current free memory. */ 94 95 extern dev_t rootdev; /* device of the root */ 96 extern struct vnode *rootvp; /* vnode of root device */ 97 extern int root_is_svm; /* root is a mirrored device flag */ 98 extern char *volatile panicstr; /* panic string pointer */ 99 extern va_list panicargs; /* panic arguments */ 100 101 extern int rstchown; /* 1 ==> restrictive chown(2) semantics */ 102 extern int klustsize; 103 104 extern int abort_enable; /* Platform input-device abort policy */ 105 106 #ifdef C2_AUDIT 107 extern int audit_active; /* C2 auditing activate 1, absent 0. */ 108 #endif 109 110 extern int avenrun[]; /* array of load averages */ 111 112 extern char *isa_list; /* For sysinfo's isalist option */ 113 114 extern int noexec_user_stack; /* patchable via /etc/system */ 115 extern int noexec_user_stack_log; /* patchable via /etc/system */ 116 117 extern void report_stack_exec(proc_t *, caddr_t); 118 119 extern void startup(void); 120 extern void clkstart(void); 121 extern void post_startup(void); 122 extern void kern_setup1(void); 123 extern void ka_init(void); 124 extern void nodename_set(void); 125 126 /* 127 * for tod fault detection 128 */ 129 enum tod_fault_type { 130 TOD_REVERSED = 0, 131 TOD_STALLED, 132 TOD_JUMPED, 133 TOD_RATECHANGED, 134 TOD_NOFAULT 135 }; 136 137 extern time_t tod_validate(time_t); 138 extern void tod_fault_reset(void); 139 extern void plat_tod_fault(enum tod_fault_type); 140 141 #ifndef _LP64 142 #ifndef min 143 int min(int, int); 144 #endif 145 146 #ifndef max 147 int max(int, int); 148 #endif 149 150 uint_t umin(uint_t, uint_t); 151 uint_t umax(uint_t, uint_t); 152 #endif /* !_LP64 */ 153 int grow(caddr_t); 154 int grow_internal(caddr_t, uint_t); 155 int brk_internal(caddr_t, uint_t); 156 timeout_id_t timeout(void (*)(void *), void *, clock_t); 157 timeout_id_t realtime_timeout(void (*)(void *), void *, clock_t); 158 clock_t untimeout(timeout_id_t); 159 void delay(clock_t); 160 int delay_sig(clock_t); 161 int nodev(); 162 int nulldev(); 163 major_t getudev(void); 164 int cmpldev(dev32_t *, dev_t); 165 dev_t expldev(dev32_t); 166 int bcmp(const void *, const void *, size_t) __PURE; 167 int stoi(char **); 168 void numtos(ulong_t, char *); 169 size_t strlen(const char *) __PURE; 170 char *strcat(char *, const char *); 171 char *strncat(char *, const char *, size_t); 172 char *strcpy(char *, const char *); 173 char *strncpy(char *, const char *, size_t); 174 /* Need to be consistent with <string.h> C++ definitions */ 175 #if __cplusplus >= 199711L 176 extern const char *strchr(const char *, int); 177 #ifndef _STRCHR_INLINE 178 #define _STRCHR_INLINE 179 extern "C++" { 180 inline char *strchr(char *__s, int __c) { 181 return (char *)strchr((const char *)__s, __c); 182 } 183 } 184 #endif /* _STRCHR_INLINE */ 185 extern const char *strrchr(const char *, int); 186 #ifndef _STRRCHR_INLINE 187 #define _STRRCHR_INLINE 188 extern "C++" { 189 inline char *strrchr(char *__s, int __c) { 190 return (char *)strrchr((const char *)__s, __c); 191 } 192 } 193 #endif /* _STRRCHR_INLINE */ 194 extern const char *strstr(const char *, const char *); 195 #ifndef _STRSTR_INLINE 196 #define _STRSTR_INLINE 197 extern "C++" { 198 inline char *strstr(char *__s1, const char *__s2) { 199 return (char *)strstr((const char *)__s1, __s2); 200 } 201 } 202 #endif /* _STRSTR_INLINE */ 203 #else /* __cplusplus >= 199711L */ 204 char *strchr(const char *, int); 205 char *strrchr(const char *, int); 206 char *strstr(const char *, const char *); 207 #endif /* __cplusplus >= 199711L */ 208 char *strnrchr(const char *, int, size_t); 209 int strcmp(const char *, const char *) __PURE; 210 int strncmp(const char *, const char *, size_t) __PURE; 211 int strcasecmp(const char *, const char *) __PURE; 212 int strncasecmp(const char *, const char *, size_t) __PURE; 213 /* Need to be consistent with <string.h> C++ definitions */ 214 #if __cplusplus >= 199711L 215 extern const char *strpbrk(const char *, const char *); 216 #ifndef _STRPBRK_INLINE 217 #define _STRPBRK_INLINE 218 extern "C++" { 219 inline char *strpbrk(char *__s1, const char *__s2) { 220 return (char *)strpbrk((const char *)__s1, __s2); 221 } 222 } 223 #endif /* _STRPBRK_INLINE */ 224 #else /* __cplusplus >= 199711L */ 225 char *strpbrk(const char *, const char *); 226 #endif /* __cplusplus >= 199711L */ 227 int strident_valid(const char *); 228 void strident_canon(char *, size_t); 229 int getsubopt(char **optionsp, char * const *tokens, char **valuep); 230 char *append_subopt(const char *, size_t, char *, const char *); 231 int ffs(long); 232 int copyin(const void *, void *, size_t); 233 void copyin_noerr(const void *, void *, size_t); 234 int xcopyin(const void *, void *, size_t); 235 int xcopyin_nta(const void *, void *, size_t, int); 236 int copyout(const void *, void *, size_t); 237 void copyout_noerr(const void *, void *, size_t); 238 int xcopyout(const void *, void *, size_t); 239 int xcopyout_nta(const void *, void *, size_t, int); 240 int copyinstr(const char *, char *, size_t, size_t *); 241 int copyinstr_noerr(const char *, char *, size_t, size_t *); 242 int copyoutstr(const char *, char *, size_t, size_t *); 243 int copyoutstr_noerr(const char *, char *, size_t, size_t *); 244 int copystr(const char *, char *, size_t, size_t *); 245 void bcopy(const void *, void *, size_t); 246 void ucopy(const void *, void *, size_t); 247 void pgcopy(const void *, void *, size_t); 248 void ovbcopy(const void *, void *, size_t); 249 void bzero(void *, size_t); 250 void uzero(void *, size_t); 251 int kcopy(const void *, void *, size_t); 252 int kcopy_nta(const void *, void *, size_t, int); 253 int kzero(void *, size_t); 254 255 extern void *memset(void *, int, size_t); 256 extern void *memcpy(void *, const void *, size_t); 257 extern void *memmove(void *, const void *, size_t); 258 extern int memcmp(const void *, const void *, size_t); 259 260 int fuword8(const void *, uint8_t *); 261 int fuword16(const void *, uint16_t *); 262 int fuword32(const void *, uint32_t *); 263 int fulword(const void *, ulong_t *); 264 void fuword8_noerr(const void *, uint8_t *); 265 void fuword16_noerr(const void *, uint16_t *); 266 void fuword32_noerr(const void *, uint32_t *); 267 void fulword_noerr(const void *, ulong_t *); 268 269 #ifdef _LP64 270 int fuword64(const void *, uint64_t *); 271 void fuword64_noerr(const void *, uint64_t *); 272 #endif 273 274 int subyte(void *, uint8_t); 275 int suword8(void *, uint8_t); 276 int suword16(void *, uint16_t); 277 int suword32(void *, uint32_t); 278 int sulword(void *, ulong_t); 279 void subyte_noerr(void *, uint8_t); 280 void suword8_noerr(void *, uint8_t); 281 void suword16_noerr(void *, uint16_t); 282 void suword32_noerr(void *, uint32_t); 283 void sulword_noerr(void *, ulong_t); 284 285 #ifdef _LP64 286 int suword64(void *, uint64_t); 287 void suword64_noerr(void *, uint64_t); 288 #endif 289 290 #if !defined(_BOOT) 291 int setjmp(label_t *); 292 extern void longjmp(label_t *) 293 __NORETURN; 294 #pragma unknown_control_flow(setjmp) 295 #endif 296 297 caddr_t caller(void); 298 caddr_t callee(void); 299 int getpcstack(pc_t *, int); 300 int on_fault(label_t *); 301 void no_fault(void); 302 void halt(char *); 303 int scanc(size_t, uchar_t *, uchar_t *, uchar_t); 304 int movtuc(size_t, uchar_t *, uchar_t *, uchar_t *); 305 int splr(int); 306 int splhigh(void); 307 int splhi(void); 308 int splzs(void); 309 int spl0(void); 310 int spl6(void); 311 int spl7(void); 312 int spl8(void); 313 void splx(int); 314 void set_base_spl(void); 315 int __ipltospl(int); 316 317 void softcall_init(void); 318 void softcall(void (*)(void *), void *); 319 void softint(void); 320 321 extern void sync_icache(caddr_t, uint_t); 322 extern void sync_data_memory(caddr_t, size_t); 323 extern void hot_patch_kernel_text(caddr_t, uint32_t, uint_t); 324 325 void _insque(caddr_t, caddr_t); 326 void _remque(caddr_t); 327 328 /* casts to keep lint happy */ 329 #define insque(q, p) _insque((caddr_t)q, (caddr_t)p) 330 #define remque(q) _remque((caddr_t)q) 331 332 #pragma unknown_control_flow(on_fault) 333 334 struct timeval; 335 extern void uniqtime(struct timeval *); 336 struct timeval32; 337 extern void uniqtime32(struct timeval32 *); 338 339 uint_t page_num_pagesizes(void); 340 size_t page_get_pagesize(uint_t n); 341 342 extern int maxusers; 343 extern int pidmax; 344 345 extern void param_preset(void); 346 extern void param_calc(int); 347 extern void param_init(void); 348 extern void param_check(void); 349 350 #endif /* _KERNEL */ 351 352 /* 353 * Structure of the system-entry table. 354 * 355 * Changes to struct sysent should maintain binary compatibility with 356 * loadable system calls, although the interface is currently private. 357 * 358 * This means it should only be expanded on the end, and flag values 359 * should not be reused. 360 * 361 * It is desirable to keep the size of this struct a power of 2 for quick 362 * indexing. 363 */ 364 struct sysent { 365 char sy_narg; /* total number of arguments */ 366 #ifdef _LP64 367 unsigned short sy_flags; /* various flags as defined below */ 368 #else 369 unsigned char sy_flags; /* various flags as defined below */ 370 #endif 371 int (*sy_call)(); /* argp, rvalp-style handler */ 372 krwlock_t *sy_lock; /* lock for loadable system calls */ 373 int64_t (*sy_callc)(); /* C-style call hander or wrapper */ 374 }; 375 376 extern struct sysent sysent[]; 377 #ifdef _SYSCALL32_IMPL 378 extern struct sysent sysent32[]; 379 #endif 380 381 extern struct sysent nosys_ent; /* entry for invalid system call */ 382 383 #define NSYSCALL 256 /* number of system calls */ 384 385 #define LOADABLE_SYSCALL(s) (s->sy_flags & SE_LOADABLE) 386 #define LOADED_SYSCALL(s) (s->sy_flags & SE_LOADED) 387 388 /* 389 * sy_flags values 390 * Values 1, 2, and 4 were used previously for SETJUMP, ASYNC, and IOSYS. 391 */ 392 #define SE_32RVAL1 0x0 /* handler returns int32_t in rval1 */ 393 #define SE_32RVAL2 0x1 /* handler returns int32_t in rval2 */ 394 #define SE_64RVAL 0x2 /* handler returns int64_t in rvals */ 395 #define SE_RVAL_MASK 0x3 /* mask of rval_t bits */ 396 397 #define SE_LOADABLE 0x08 /* syscall is loadable */ 398 #define SE_LOADED 0x10 /* syscall is completely loaded */ 399 #define SE_NOUNLOAD 0x20 /* syscall never needs unload */ 400 #define SE_ARGC 0x40 /* syscall takes C-style args */ 401 402 /* 403 * Structure of the return-value parameter passed by reference to 404 * system entries. 405 */ 406 union rval { 407 struct { 408 int r_v1; 409 int r_v2; 410 } r_v; 411 off_t r_off; 412 offset_t r_offset; 413 time_t r_time; 414 int64_t r_vals; 415 }; 416 #define r_val1 r_v.r_v1 417 #define r_val2 r_v.r_v2 418 419 typedef union rval rval_t; 420 421 #ifdef _KERNEL 422 423 extern void reset_syscall_args(void); 424 extern int save_syscall_args(void); 425 extern uint_t get_syscall_args(klwp_t *lwp, long *argp, int *nargsp); 426 #ifdef _SYSCALL32_IMPL 427 extern uint_t get_syscall32_args(klwp_t *lwp, int *argp, int *nargp); 428 #endif 429 430 extern uint_t set_errno(uint_t error); 431 #pragma rarely_called(set_errno) 432 433 extern int64_t syscall_ap(void); 434 extern int64_t loadable_syscall(long, long, long, long, long, long, long, long); 435 extern int64_t nosys(void); 436 437 extern void swtch(void); 438 439 extern uint_t kcpc_key; /* TSD key for performance counter context */ 440 441 #ifdef __lint 442 extern int __lintzero; /* for spoofing lint */ 443 #endif 444 445 446 /* 447 * initname holds the path to init. It is defined by main.c, may be set by 448 * bootflags.c, and is used by main.c:exec_init(). 449 */ 450 #define INITNAME_SZ 32 451 #define INITARGS_SZ 80 452 453 extern char initname[INITNAME_SZ]; 454 extern char initargs[INITARGS_SZ]; 455 456 extern int exec_init(const char *, int, const char *); 457 458 #endif /* _KERNEL */ 459 460 #ifdef __cplusplus 461 } 462 #endif 463 464 #endif /* _SYS_SYSTM_H */ 465