1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* 3 * The contents of this file are subject to the Mozilla Public 4 * License Version 1.1 (the "License"); you may not use this file 5 * except in compliance with the License. You may obtain a copy of 6 * the License at http://www.mozilla.org/MPL/ 7 * 8 * Software distributed under the License is distributed on an "AS 9 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or 10 * implied. See the License for the specific language governing 11 * rights and limitations under the License. 12 * 13 * The Original Code is the Netscape Portable Runtime (NSPR). 14 * 15 * The Initial Developer of the Original Code is Netscape 16 * Communications Corporation. Portions created by Netscape are 17 * Copyright (C) 1998-2000 Netscape Communications Corporation. All 18 * Rights Reserved. 19 * 20 * Contributor(s): 21 * 22 * Alternatively, the contents of this file may be used under the 23 * terms of the GNU General Public License Version 2 or later (the 24 * "GPL"), in which case the provisions of the GPL are applicable 25 * instead of those above. If you wish to allow use of your 26 * version of this file only under the terms of the GPL and not to 27 * allow others to use your version of this file under the MPL, 28 * indicate your decision by deleting the provisions above and 29 * replace them with the notice and other provisions required by 30 * the GPL. If you do not delete the provisions above, a recipient 31 * may use your version of this file under either the MPL or the 32 * GPL. 33 */ 34 35 #ifndef nspr_linux_defs_h___ 36 #define nspr_linux_defs_h___ 37 38 #include "prthread.h" 39 40 /* 41 * Internal configuration macros 42 */ 43 44 #define PR_LINKER_ARCH "linux" 45 #define _PR_SI_SYSNAME "LINUX" 46 #ifdef __powerpc__ 47 #define _PR_SI_ARCHITECTURE "ppc" 48 #elif defined(__alpha) 49 #define _PR_SI_ARCHITECTURE "alpha" 50 #elif defined(__ia64__) 51 #define _PR_SI_ARCHITECTURE "ia64" 52 #elif defined(__x86_64__) 53 #define _PR_SI_ARCHITECTURE "x86-64" 54 #elif defined(__mc68000__) 55 #define _PR_SI_ARCHITECTURE "m68k" 56 #elif defined(__sparc__) 57 #define _PR_SI_ARCHITECTURE "sparc" 58 #elif defined(__i386__) 59 #define _PR_SI_ARCHITECTURE "x86" 60 #elif defined(__mips__) 61 #define _PR_SI_ARCHITECTURE "mips" 62 #elif defined(__arm__) 63 #define _PR_SI_ARCHITECTURE "arm" 64 #elif defined(__hppa__) 65 #define _PR_SI_ARCHITECTURE "hppa" 66 #elif defined(__s390__) 67 #define _PR_SI_ARCHITECTURE "s390" 68 #elif defined(__s390x__) 69 #define _PR_SI_ARCHITECTURE "s390x" 70 #else 71 #error "Unknown CPU architecture" 72 #endif 73 #define PR_DLL_SUFFIX ".so" 74 75 #define _PR_VMBASE 0x30000000 76 #define _PR_STACK_VMBASE 0x50000000 77 #define _MD_DEFAULT_STACK_SIZE 65536L 78 #define _MD_MMAP_FLAGS MAP_PRIVATE 79 80 #undef HAVE_STACK_GROWING_UP 81 82 /* 83 * Elf linux supports dl* functions 84 */ 85 #define HAVE_DLL 86 #define USE_DLFCN 87 88 #if defined(__i386__) 89 #define _PR_HAVE_ATOMIC_OPS 90 #define _MD_INIT_ATOMIC() 91 extern PRInt32 _PR_x86_AtomicIncrement(PRInt32 *val); 92 #define _MD_ATOMIC_INCREMENT _PR_x86_AtomicIncrement 93 extern PRInt32 _PR_x86_AtomicDecrement(PRInt32 *val); 94 #define _MD_ATOMIC_DECREMENT _PR_x86_AtomicDecrement 95 extern PRInt32 _PR_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val); 96 #define _MD_ATOMIC_ADD _PR_x86_AtomicAdd 97 extern PRInt32 _PR_x86_AtomicSet(PRInt32 *val, PRInt32 newval); 98 #define _MD_ATOMIC_SET _PR_x86_AtomicSet 99 #endif 100 101 #if defined(__ia64__) 102 #define _PR_HAVE_ATOMIC_OPS 103 #define _MD_INIT_ATOMIC() 104 extern PRInt32 _PR_ia64_AtomicIncrement(PRInt32 *val); 105 #define _MD_ATOMIC_INCREMENT _PR_ia64_AtomicIncrement 106 extern PRInt32 _PR_ia64_AtomicDecrement(PRInt32 *val); 107 #define _MD_ATOMIC_DECREMENT _PR_ia64_AtomicDecrement 108 extern PRInt32 _PR_ia64_AtomicAdd(PRInt32 *ptr, PRInt32 val); 109 #define _MD_ATOMIC_ADD _PR_ia64_AtomicAdd 110 extern PRInt32 _PR_ia64_AtomicSet(PRInt32 *val, PRInt32 newval); 111 #define _MD_ATOMIC_SET _PR_ia64_AtomicSet 112 #endif 113 114 #if defined(__x86_64__) 115 #define _PR_HAVE_ATOMIC_OPS 116 #define _MD_INIT_ATOMIC() 117 extern PRInt32 _PR_x86_64_AtomicIncrement(PRInt32 *val); 118 #define _MD_ATOMIC_INCREMENT _PR_x86_64_AtomicIncrement 119 extern PRInt32 _PR_x86_64_AtomicDecrement(PRInt32 *val); 120 #define _MD_ATOMIC_DECREMENT _PR_x86_64_AtomicDecrement 121 extern PRInt32 _PR_x86_64_AtomicAdd(PRInt32 *ptr, PRInt32 val); 122 #define _MD_ATOMIC_ADD _PR_x86_64_AtomicAdd 123 extern PRInt32 _PR_x86_64_AtomicSet(PRInt32 *val, PRInt32 newval); 124 #define _MD_ATOMIC_SET _PR_x86_64_AtomicSet 125 #endif 126 127 #define USE_SETJMP 128 #if defined(__GLIBC__) && __GLIBC__ >= 2 129 #define _PR_POLL_AVAILABLE 130 #endif 131 #undef _PR_USE_POLL 132 #define _PR_STAT_HAS_ONLY_ST_ATIME 133 #if defined(__alpha) || defined(__ia64__) 134 #define _PR_HAVE_LARGE_OFF_T 135 #elif (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) 136 #define _PR_HAVE_OFF64_T 137 #else 138 #define _PR_NO_LARGE_FILES 139 #endif 140 #if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) 141 #define _PR_INET6 142 #define _PR_HAVE_INET_NTOP 143 #define _PR_HAVE_GETHOSTBYNAME2 144 #define _PR_HAVE_GETADDRINFO 145 #define _PR_INET6_PROBE 146 #endif 147 #define _PR_HAVE_SYSV_SEMAPHORES 148 #define PR_HAVE_SYSV_NAMED_SHARED_MEMORY 149 #if (__GLIBC__ >= 2) && defined(_PR_PTHREADS) 150 #define _PR_HAVE_GETHOST_R 151 #define _PR_HAVE_GETHOST_R_INT 152 #endif 153 154 #ifdef _PR_PTHREADS 155 156 extern void _MD_CleanupBeforeExit(void); 157 #define _MD_CLEANUP_BEFORE_EXIT _MD_CleanupBeforeExit 158 159 #else /* ! _PR_PTHREADS */ 160 161 #include <setjmp.h> 162 163 #define PR_CONTEXT_TYPE sigjmp_buf 164 165 #define CONTEXT(_th) ((_th)->md.context) 166 167 #ifdef __powerpc__ 168 /* 169 * PowerPC based MkLinux 170 * 171 * On the PowerPC, the new style jmp_buf isn't used until glibc 172 * 2.1. 173 */ 174 #if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) 175 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_GPR1] 176 #else 177 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__misc[0] 178 #endif /* glibc 2.1 or later */ 179 #define _MD_SET_FP(_t, val) 180 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 181 #define _MD_GET_FP_PTR(_t) ((void *) 0) 182 /* aix = 64, macos = 70 */ 183 #define PR_NUM_GCREGS 64 184 185 #elif defined(__alpha) 186 /* Alpha based Linux */ 187 188 #if defined(__GLIBC__) && __GLIBC__ >= 2 189 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP] 190 #define _MD_SET_FP(_t, val) 191 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 192 #define _MD_GET_FP_PTR(_t) ((void *) 0) 193 #define _MD_SP_TYPE long int 194 #else 195 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp 196 #define _MD_SET_FP(_t, val) 197 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 198 #define _MD_GET_FP_PTR(_t) ((void *) 0) 199 #define _MD_SP_TYPE __ptr_t 200 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ 201 202 /* XXX not sure if this is correct, or maybe it should be 17? */ 203 #define PR_NUM_GCREGS 9 204 205 #elif defined(__ia64__) 206 207 #define _MD_GET_SP(_t) ((long *)((_t)->md.context[0].__jmpbuf)[0]) 208 #define _MD_SET_FP(_t, val) 209 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 210 #define _MD_GET_FP_PTR(_t) ((void *) 0) 211 #define _MD_SP_TYPE long int 212 213 #define PR_NUM_GCREGS _JBLEN 214 215 #elif defined(__mc68000__) 216 /* m68k based Linux */ 217 218 /* 219 * On the m68k, glibc still uses the old style sigjmp_buf, even 220 * in glibc 2.0.7. 221 */ 222 #if defined(__GLIBC__) && __GLIBC__ >= 2 223 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp 224 #define _MD_SET_FP(_t, val) 225 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 226 #define _MD_GET_FP_PTR(_t) ((void *) 0) 227 #define _MD_SP_TYPE int 228 #else 229 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp 230 #define _MD_SET_FP(_t, val) 231 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 232 #define _MD_GET_FP_PTR(_t) ((void *) 0) 233 #define _MD_SP_TYPE __ptr_t 234 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ 235 236 /* XXX not sure if this is correct, or maybe it should be 17? */ 237 #define PR_NUM_GCREGS 9 238 239 #elif defined(__sparc__) 240 /* Sparc */ 241 #if defined(__GLIBC__) && __GLIBC__ >= 2 242 /* 243 * You need glibc2-2.0.7-25 or later. The libraries that came with 244 * Red Hat 5.1 are not new enough, but they are in 5.2. 245 */ 246 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP] 247 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[JB_FP] = val) 248 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 249 #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[JB_FP]) 250 #define _MD_SP_TYPE int 251 #else 252 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__fp 253 #define _MD_SET_FP(_t, val) 254 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 255 #define _MD_GET_FP_PTR(_t) ((void *) 0) 256 #define _MD_SP_TYPE __ptr_t 257 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ 258 259 #elif defined(__i386__) 260 /* Intel based Linux */ 261 #if defined(__GLIBC__) && __GLIBC__ >= 2 262 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP] 263 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[JB_BP] = val) 264 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 265 #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[JB_BP]) 266 #define _MD_SP_TYPE int 267 #else 268 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp 269 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__bp = val) 270 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 271 #define _MD_GET_FP_PTR(_t) &((_t)->md.context[0].__jmpbuf[0].__bp) 272 #define _MD_SP_TYPE __ptr_t 273 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ 274 #define PR_NUM_GCREGS 6 275 276 #elif defined(__mips__) 277 /* Linux/MIPS */ 278 #if defined(__GLIBC__) && __GLIBC__ >= 2 279 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp 280 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__fp = (val)) 281 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 282 #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[0].__fp) 283 #define _MD_SP_TYPE __ptr_t 284 #else 285 #error "Linux/MIPS pre-glibc2 not supported yet" 286 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ 287 288 #elif defined(__arm__) 289 /* ARM/Linux */ 290 #if defined(__GLIBC__) && __GLIBC__ >= 2 291 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[20] 292 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[19] = (val)) 293 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 294 #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[19]) 295 #define _MD_SP_TYPE __ptr_t 296 #else 297 #error "ARM/Linux pre-glibc2 not supported yet" 298 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ 299 300 #else 301 302 #error "Unknown CPU architecture" 303 304 #endif /*__powerpc__*/ 305 306 /* 307 ** Initialize a thread context to run "_main()" when started 308 */ 309 #ifdef __powerpc__ 310 311 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ 312 { \ 313 *status = PR_TRUE; \ 314 if (sigsetjmp(CONTEXT(_thread), 1)) { \ 315 _main(); \ 316 } \ 317 _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 128); \ 318 _thread->md.sp = _MD_GET_SP_PTR(_thread); \ 319 _thread->md.fp = _MD_GET_FP_PTR(_thread); \ 320 _MD_SET_FP(_thread, 0); \ 321 } 322 323 #elif defined(__mips__) 324 325 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ 326 { \ 327 *status = PR_TRUE; \ 328 (void) sigsetjmp(CONTEXT(_thread), 1); \ 329 _thread->md.context[0].__jmpbuf[0].__pc = (__ptr_t) _main; \ 330 _MD_GET_SP(_thread) = (_MD_SP_TYPE) ((_sp) - 64); \ 331 _thread->md.sp = _MD_GET_SP_PTR(_thread); \ 332 _thread->md.fp = _MD_GET_FP_PTR(_thread); \ 333 _MD_SET_FP(_thread, 0); \ 334 } 335 336 #else 337 338 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ 339 { \ 340 *status = PR_TRUE; \ 341 if (sigsetjmp(CONTEXT(_thread), 1)) { \ 342 _main(); \ 343 } \ 344 _MD_GET_SP(_thread) = (_MD_SP_TYPE) ((_sp) - 64); \ 345 _thread->md.sp = _MD_GET_SP_PTR(_thread); \ 346 _thread->md.fp = _MD_GET_FP_PTR(_thread); \ 347 _MD_SET_FP(_thread, 0); \ 348 } 349 350 #endif /*__powerpc__*/ 351 352 #define _MD_SWITCH_CONTEXT(_thread) \ 353 if (!sigsetjmp(CONTEXT(_thread), 1)) { \ 354 (_thread)->md.errcode = errno; \ 355 _PR_Schedule(); \ 356 } 357 358 /* 359 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT 360 */ 361 #define _MD_RESTORE_CONTEXT(_thread) \ 362 { \ 363 errno = (_thread)->md.errcode; \ 364 _MD_SET_CURRENT_THREAD(_thread); \ 365 siglongjmp(CONTEXT(_thread), 1); \ 366 } 367 368 /* Machine-dependent (MD) data structures */ 369 370 struct _MDThread { 371 PR_CONTEXT_TYPE context; 372 void *sp; 373 void *fp; 374 int id; 375 int errcode; 376 }; 377 378 struct _MDThreadStack { 379 PRInt8 notused; 380 }; 381 382 struct _MDLock { 383 PRInt8 notused; 384 }; 385 386 struct _MDSemaphore { 387 PRInt8 notused; 388 }; 389 390 struct _MDCVar { 391 PRInt8 notused; 392 }; 393 394 struct _MDSegment { 395 PRInt8 notused; 396 }; 397 398 /* 399 * md-specific cpu structure field 400 */ 401 #include <sys/time.h> /* for FD_SETSIZE */ 402 #define _PR_MD_MAX_OSFD FD_SETSIZE 403 404 struct _MDCPU_Unix { 405 PRCList ioQ; 406 PRUint32 ioq_timeout; 407 PRInt32 ioq_max_osfd; 408 PRInt32 ioq_osfd_cnt; 409 #ifndef _PR_USE_POLL 410 fd_set fd_read_set, fd_write_set, fd_exception_set; 411 PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD], 412 fd_exception_cnt[_PR_MD_MAX_OSFD]; 413 #else 414 struct pollfd *ioq_pollfds; 415 int ioq_pollfds_size; 416 #endif /* _PR_USE_POLL */ 417 }; 418 419 #define _PR_IOQ(_cpu) ((_cpu)->md.md_unix.ioQ) 420 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu)) 421 #define _PR_FD_READ_SET(_cpu) ((_cpu)->md.md_unix.fd_read_set) 422 #define _PR_FD_READ_CNT(_cpu) ((_cpu)->md.md_unix.fd_read_cnt) 423 #define _PR_FD_WRITE_SET(_cpu) ((_cpu)->md.md_unix.fd_write_set) 424 #define _PR_FD_WRITE_CNT(_cpu) ((_cpu)->md.md_unix.fd_write_cnt) 425 #define _PR_FD_EXCEPTION_SET(_cpu) ((_cpu)->md.md_unix.fd_exception_set) 426 #define _PR_FD_EXCEPTION_CNT(_cpu) ((_cpu)->md.md_unix.fd_exception_cnt) 427 #define _PR_IOQ_TIMEOUT(_cpu) ((_cpu)->md.md_unix.ioq_timeout) 428 #define _PR_IOQ_MAX_OSFD(_cpu) ((_cpu)->md.md_unix.ioq_max_osfd) 429 #define _PR_IOQ_OSFD_CNT(_cpu) ((_cpu)->md.md_unix.ioq_osfd_cnt) 430 #define _PR_IOQ_POLLFDS(_cpu) ((_cpu)->md.md_unix.ioq_pollfds) 431 #define _PR_IOQ_POLLFDS_SIZE(_cpu) ((_cpu)->md.md_unix.ioq_pollfds_size) 432 433 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu) 32 434 435 struct _MDCPU { 436 struct _MDCPU_Unix md_unix; 437 }; 438 439 #define _MD_INIT_LOCKS() 440 #define _MD_NEW_LOCK(lock) PR_SUCCESS 441 #define _MD_FREE_LOCK(lock) 442 #define _MD_LOCK(lock) 443 #define _MD_UNLOCK(lock) 444 #define _MD_INIT_IO() 445 #define _MD_IOQ_LOCK() 446 #define _MD_IOQ_UNLOCK() 447 448 extern PRStatus _MD_InitializeThread(PRThread *thread); 449 450 #define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu) 451 #define _MD_INIT_THREAD _MD_InitializeThread 452 #define _MD_EXIT_THREAD(thread) 453 #define _MD_SUSPEND_THREAD(thread) _MD_suspend_thread 454 #define _MD_RESUME_THREAD(thread) _MD_resume_thread 455 #define _MD_CLEAN_THREAD(_thread) 456 457 extern PRStatus _MD_CREATE_THREAD( 458 PRThread *thread, 459 void (*start) (void *), 460 PRThreadPriority priority, 461 PRThreadScope scope, 462 PRThreadState state, 463 PRUint32 stackSize); 464 extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri); 465 extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout); 466 extern PRStatus _MD_WAKEUP_WAITER(PRThread *); 467 extern void _MD_YIELD(void); 468 469 #endif /* ! _PR_PTHREADS */ 470 471 extern void _MD_EarlyInit(void); 472 extern PRIntervalTime _PR_UNIX_GetInterval(void); 473 extern PRIntervalTime _PR_UNIX_TicksPerSecond(void); 474 475 #define _MD_EARLY_INIT _MD_EarlyInit 476 #define _MD_FINAL_INIT _PR_UnixInit 477 #define _MD_GET_INTERVAL _PR_UNIX_GetInterval 478 #define _MD_INTERVAL_PER_SEC _PR_UNIX_TicksPerSecond 479 480 /* 481 * We wrapped the select() call. _MD_SELECT refers to the built-in, 482 * unwrapped version. 483 */ 484 #define _MD_SELECT __select 485 486 #ifdef _PR_POLL_AVAILABLE 487 #include <sys/poll.h> 488 extern int __syscall_poll(struct pollfd *ufds, unsigned long int nfds, 489 int timeout); 490 #define _MD_POLL __syscall_poll 491 #endif 492 493 /* For writev() */ 494 #include <sys/uio.h> 495 496 extern void _MD_linux_map_sendfile_error(int err); 497 498 #endif /* nspr_linux_defs_h___ */ 499
