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() 91extern PRInt32 _PR_x86_AtomicIncrement(PRInt32 *val); 92#define _MD_ATOMIC_INCREMENT _PR_x86_AtomicIncrement 93extern PRInt32 _PR_x86_AtomicDecrement(PRInt32 *val); 94#define _MD_ATOMIC_DECREMENT _PR_x86_AtomicDecrement 95extern PRInt32 _PR_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val); 96#define _MD_ATOMIC_ADD _PR_x86_AtomicAdd 97extern 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() 104extern PRInt32 _PR_ia64_AtomicIncrement(PRInt32 *val); 105#define _MD_ATOMIC_INCREMENT _PR_ia64_AtomicIncrement 106extern PRInt32 _PR_ia64_AtomicDecrement(PRInt32 *val); 107#define _MD_ATOMIC_DECREMENT _PR_ia64_AtomicDecrement 108extern PRInt32 _PR_ia64_AtomicAdd(PRInt32 *ptr, PRInt32 val); 109#define _MD_ATOMIC_ADD _PR_ia64_AtomicAdd 110extern 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() 117extern PRInt32 _PR_x86_64_AtomicIncrement(PRInt32 *val); 118#define _MD_ATOMIC_INCREMENT _PR_x86_64_AtomicIncrement 119extern PRInt32 _PR_x86_64_AtomicDecrement(PRInt32 *val); 120#define _MD_ATOMIC_DECREMENT _PR_x86_64_AtomicDecrement 121extern PRInt32 _PR_x86_64_AtomicAdd(PRInt32 *ptr, PRInt32 val); 122#define _MD_ATOMIC_ADD _PR_x86_64_AtomicAdd 123extern 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 156extern 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 370struct _MDThread { 371 PR_CONTEXT_TYPE context; 372 void *sp; 373 void *fp; 374 int id; 375 int errcode; 376}; 377 378struct _MDThreadStack { 379 PRInt8 notused; 380}; 381 382struct _MDLock { 383 PRInt8 notused; 384}; 385 386struct _MDSemaphore { 387 PRInt8 notused; 388}; 389 390struct _MDCVar { 391 PRInt8 notused; 392}; 393 394struct _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 404struct _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 435struct _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 448extern 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 457extern PRStatus _MD_CREATE_THREAD( 458 PRThread *thread, 459 void (*start) (void *), 460 PRThreadPriority priority, 461 PRThreadScope scope, 462 PRThreadState state, 463 PRUint32 stackSize); 464extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri); 465extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout); 466extern PRStatus _MD_WAKEUP_WAITER(PRThread *); 467extern void _MD_YIELD(void); 468 469#endif /* ! _PR_PTHREADS */ 470 471extern void _MD_EarlyInit(void); 472extern PRIntervalTime _PR_UNIX_GetInterval(void); 473extern 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> 488extern 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 496extern void _MD_linux_map_sendfile_error(int err); 497 498#endif /* nspr_linux_defs_h___ */ 499