nsprpub/pr/include/md/_os2.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is the Netscape Portable Runtime (NSPR).
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 1998-2000
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
  26  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27  * in which case the provisions of the GPL or the LGPL are applicable instead
  28  * of those above. If you wish to allow use of your version of this file only
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  31  * decision by deleting the provisions above and replace them with the notice
  32  * and other provisions required by the GPL or the LGPL. If you do not delete
  33  * the provisions above, a recipient may use your version of this file under
  34  * the terms of any one of the MPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37
  38 #ifndef nspr_os2_defs_h___
  39 #define nspr_os2_defs_h___
  40
  41 #ifndef NO_LONG_LONG
  42 #define INCL_LONGLONG
  43 #endif
  44 #define INCL_DOS
  45 #define INCL_DOSPROCESS
  46 #define INCL_DOSERRORS
  47 #define INCL_WIN
  48 #define INCL_WPS
  49 #include <os2.h>
  50 #include <sys/select.h>
  51
  52 #include "prio.h"
  53
  54 #include <errno.h>
  55
  56 /*
  57  * Internal configuration macros
  58  */
  59
  60 #define PR_LINKER_ARCH      "os2"
  61 #define _PR_SI_SYSNAME        "OS2"
  62 #define _PR_SI_ARCHITECTURE   "x86"    /* XXXMB hardcode for now */
  63
  64 #define HAVE_DLL
  65 #define _PR_GLOBAL_THREADS_ONLY
  66 #undef  HAVE_THREAD_AFFINITY
  67 #define _PR_HAVE_THREADSAFE_GETHOST
  68 #define _PR_HAVE_ATOMIC_OPS
  69 #define HAVE_NETINET_TCP_H
  70
  71 #define HANDLE unsigned long
  72 #define HINSTANCE HMODULE
  73
  74 /* --- Common User-Thread/Native-Thread Definitions --------------------- */
  75
  76 /* --- Globals --- */
  77 extern struct PRLock                      *_pr_schedLock;
  78
  79 /* --- Typedefs --- */
  80 typedef void (*FiberFunc)(void *);
  81
  82 #define PR_NUM_GCREGS           8
  83 typedef PRInt32                 PR_CONTEXT_TYPE[PR_NUM_GCREGS];
  84 #define GC_VMBASE               0x40000000
  85 #define GC_VMLIMIT              0x00FFFFFF
  86 typedef int (*FARPROC)();
  87
  88 #define _MD_MAGIC_THREAD        0x22222222
  89 #define _MD_MAGIC_THREADSTACK   0x33333333
  90 #define _MD_MAGIC_SEGMENT       0x44444444
  91 #define _MD_MAGIC_DIR           0x55555555
  92 #define _MD_MAGIC_CV        0x66666666
  93
  94 struct _MDSemaphore {
  95    HEV sem;
  96 };
  97
  98 struct _MDCPU {
  99     int              unused;
 100 };
 101
 102 struct _MDThread {
 103     HEV              blocked_sema;      /* Threads block on this when waiting
 104                                          * for IO or CondVar.
 105                                          */
 106     PRBool           inCVWaitQueue;     /* PR_TRUE if the thread is in the
 107                                          * wait queue of some cond var.
 108                                          * PR_FALSE otherwise.  */
 109     TID              handle;            /* OS/2 thread handle */
 110     void            *sp;                /* only valid when suspended */
 111     PRUint32         magic;             /* for debugging */
 112     PR_CONTEXT_TYPE  gcContext;         /* Thread context for GC */
 113     struct PRThread *prev, *next;       /* used by the cvar wait queue to
 114                                          * chain the PRThread structures
 115                                          * together */
 116 };
 117
 118 struct _MDThreadStack {
 119     PRUint32           magic;          /* for debugging */
 120 };
 121
 122 struct _MDSegment {
 123     PRUint32           magic;          /* for debugging */
 124 };
 125
 126 #undef PROFILE_LOCKS
 127
 128 struct _MDDir {
 129     HDIR           d_hdl;
 130     union {
 131         FILEFINDBUF3  small;
 132         FILEFINDBUF3L large;
 133     } d_entry;
 134     PRBool           firstEntry;     /* Is this the entry returned
 135                                       * by FindFirstFile()? */
 136     PRUint32         magic;          /* for debugging */
 137 };
 138
 139 struct _MDCVar {
 140     PRUint32 magic;
 141     struct PRThread *waitHead, *waitTail;  /* the wait queue: a doubly-
 142                                             * linked list of threads
 143                                             * waiting on this condition
 144                                             * variable */
 145     PRIntn nwait;                          /* number of threads in the
 146                                             * wait queue */
 147 };
 148
 149 #define _MD_CV_NOTIFIED_LENGTH 6
 150 typedef struct _MDNotified _MDNotified;
 151 struct _MDNotified {
 152     PRIntn length;                     /* # of used entries in this
 153                                         * structure */
 154     struct {
 155         struct _MDCVar *cv;            /* the condition variable notified */
 156         PRIntn times;                  /* and the number of times notified */
 157         struct PRThread *notifyHead;   /* list of threads to wake up */
 158     } cv[_MD_CV_NOTIFIED_LENGTH];
 159     _MDNotified *link;                 /* link to another of these, or NULL */
 160 };
 161
 162 struct _MDLock {
 163     HMTX mutex;                        /* this is recursive on OS/2 */
 164
 165     /*
 166      * When notifying cvars, there is no point in actually
 167      * waking up the threads waiting on the cvars until we've
 168      * released the lock.  So, we temporarily record the cvars.
 169      * When doing an unlock, we'll then wake up the waiting threads.
 170      */
 171     struct _MDNotified notified;     /* array of conditions notified */
 172 #ifdef PROFILE_LOCKS
 173     PRInt32 hitcount;
 174     PRInt32 misscount;
 175 #endif
 176 };
 177
 178 struct _MDFileDesc {
 179     PRInt32 osfd;    /* The osfd can come from one of three spaces:
 180                       * - For stdin, stdout, and stderr, we are using
 181                       *   the libc file handle (0, 1, 2), which is an int.
 182                       * - For files and pipes, we are using OS/2 handles,
 183                       *   which is a void*.
 184                       * - For sockets, we are using int
 185                       */
 186 };
 187
 188 struct _MDProcess {
 189    PID pid;
 190 };
 191
 192 /* --- Misc stuff --- */
 193 #define _MD_GET_SP(thread)            (thread)->md.gcContext[6]
 194
 195 /* --- IO stuff --- */
 196
 197 #define _MD_OPEN                      (_PR_MD_OPEN)
 198 #define _MD_OPEN_FILE                 (_PR_MD_OPEN)
 199 #define _MD_READ                      (_PR_MD_READ)
 200 #define _MD_WRITE                     (_PR_MD_WRITE)
 201 #define _MD_WRITEV                    (_PR_MD_WRITEV)
 202 #define _MD_LSEEK                     (_PR_MD_LSEEK)
 203 #define _MD_LSEEK64                   (_PR_MD_LSEEK64)
 204 extern PRInt32 _MD_CloseFile(PRInt32 osfd);
 205 #define _MD_CLOSE_FILE                _MD_CloseFile
 206 #define _MD_GETFILEINFO               (_PR_MD_GETFILEINFO)
 207 #define _MD_GETFILEINFO64             (_PR_MD_GETFILEINFO64)
 208 #define _MD_GETOPENFILEINFO           (_PR_MD_GETOPENFILEINFO)
 209 #define _MD_GETOPENFILEINFO64         (_PR_MD_GETOPENFILEINFO64)
 210 #define _MD_STAT                      (_PR_MD_STAT)
 211 #define _MD_RENAME                    (_PR_MD_RENAME)
 212 #define _MD_ACCESS                    (_PR_MD_ACCESS)
 213 #define _MD_DELETE                    (_PR_MD_DELETE)
 214 #define _MD_MKDIR                     (_PR_MD_MKDIR)
 215 #define _MD_MAKE_DIR                  (_PR_MD_MKDIR)
 216 #define _MD_RMDIR                     (_PR_MD_RMDIR)
 217 #define _MD_LOCKFILE                  (_PR_MD_LOCKFILE)
 218 #define _MD_TLOCKFILE                 (_PR_MD_TLOCKFILE)
 219 #define _MD_UNLOCKFILE                (_PR_MD_UNLOCKFILE)
 220
 221 /* --- Socket IO stuff --- */
 222
 223 /* The ones that don't map directly may need to be re-visited... */
 224 #define _MD_EACCES                EACCES
 225 #define _MD_EADDRINUSE            EADDRINUSE
 226 #define _MD_EADDRNOTAVAIL         EADDRNOTAVAIL
 227 #define _MD_EAFNOSUPPORT          EAFNOSUPPORT
 228 #define _MD_EAGAIN                EWOULDBLOCK
 229 #define _MD_EALREADY              EALREADY
 230 #define _MD_EBADF                 EBADF
 231 #define _MD_ECONNREFUSED          ECONNREFUSED
 232 #define _MD_ECONNRESET            ECONNRESET
 233 #define _MD_EFAULT                SOCEFAULT
 234 #define _MD_EINPROGRESS           EINPROGRESS
 235 #define _MD_EINTR                 EINTR
 236 #define _MD_EINVAL                EINVAL
 237 #define _MD_EISCONN               EISCONN
 238 #define _MD_ENETUNREACH           ENETUNREACH
 239 #define _MD_ENOENT                ENOENT
 240 #define _MD_ENOTCONN              ENOTCONN
 241 #define _MD_ENOTSOCK              ENOTSOCK
 242 #define _MD_EOPNOTSUPP            EOPNOTSUPP
 243 #define _MD_EWOULDBLOCK           EWOULDBLOCK
 244 #define _MD_GET_SOCKET_ERROR()    sock_errno()
 245 #ifndef INADDR_LOOPBACK /* For some reason this is not defined in OS2 tcpip */
 246 /*  #define INADDR_LOOPBACK         INADDR_ANY */
 247 #endif
 248
 249 #define _MD_INIT_FILEDESC(fd)
 250 extern void _MD_MakeNonblock(PRFileDesc *f);
 251 #define _MD_MAKE_NONBLOCK             _MD_MakeNonblock
 252 #define _MD_INIT_FD_INHERITABLE       (_PR_MD_INIT_FD_INHERITABLE)
 253 #define _MD_QUERY_FD_INHERITABLE      (_PR_MD_QUERY_FD_INHERITABLE)
 254 #define _MD_SHUTDOWN                  (_PR_MD_SHUTDOWN)
 255 #define _MD_LISTEN                    _PR_MD_LISTEN
 256 extern PRInt32 _MD_CloseSocket(PRInt32 osfd);
 257 #define _MD_CLOSE_SOCKET              _MD_CloseSocket
 258 #define _MD_SENDTO                    (_PR_MD_SENDTO)
 259 #define _MD_RECVFROM                  (_PR_MD_RECVFROM)
 260 #define _MD_SOCKETPAIR                (_PR_MD_SOCKETPAIR)
 261 #define _MD_GETSOCKNAME               (_PR_MD_GETSOCKNAME)
 262 #define _MD_GETPEERNAME               (_PR_MD_GETPEERNAME)
 263 #define _MD_GETSOCKOPT                (_PR_MD_GETSOCKOPT)
 264 #define _MD_SETSOCKOPT                (_PR_MD_SETSOCKOPT)
 265
 266 #define _MD_FSYNC                     _PR_MD_FSYNC
 267 #define _MD_SET_FD_INHERITABLE        (_PR_MD_SET_FD_INHERITABLE)
 268
 269 #ifdef _PR_HAVE_ATOMIC_OPS
 270 #define _MD_INIT_ATOMIC()
 271 #define _MD_ATOMIC_INCREMENT          _PR_MD_ATOMIC_INCREMENT
 272 #define _MD_ATOMIC_ADD                _PR_MD_ATOMIC_ADD
 273 #define _MD_ATOMIC_DECREMENT          _PR_MD_ATOMIC_DECREMENT
 274 #define _MD_ATOMIC_SET                _PR_MD_ATOMIC_SET
 275 #endif
 276
 277 #define _MD_INIT_IO                   (_PR_MD_INIT_IO)
 278 #define _MD_PR_POLL                   (_PR_MD_PR_POLL)
 279
 280 #define _MD_SOCKET                    (_PR_MD_SOCKET)
 281 extern PRInt32 _MD_SocketAvailable(PRFileDesc *fd);
 282 #define _MD_SOCKETAVAILABLE           _MD_SocketAvailable
 283 #define _MD_PIPEAVAILABLE             _MD_SocketAvailable
 284 #define _MD_CONNECT                   (_PR_MD_CONNECT)
 285 extern PRInt32 _MD_Accept(PRFileDesc *fd, PRNetAddr *raddr, PRUint32 *rlen,
 286         PRIntervalTime timeout);
 287 #define _MD_ACCEPT                    _MD_Accept
 288 #define _MD_BIND                      (_PR_MD_BIND)
 289 #define _MD_RECV                      (_PR_MD_RECV)
 290 #define _MD_SEND                      (_PR_MD_SEND)
 291
 292 /* --- Scheduler stuff --- */
 293 /* #define _MD_PAUSE_CPU                 _PR_MD_PAUSE_CPU */
 294 #define _MD_PAUSE_CPU
 295
 296 /* --- DIR stuff --- */
 297 #define PR_DIRECTORY_SEPARATOR        '\\'
 298 #define PR_DIRECTORY_SEPARATOR_STR    "\\"
 299 #define PR_PATH_SEPARATOR               ';'
 300 #define PR_PATH_SEPARATOR_STR           ";"
 301 #define _MD_ERRNO()                   errno
 302 #define _MD_OPEN_DIR                  (_PR_MD_OPEN_DIR)
 303 #define _MD_CLOSE_DIR                 (_PR_MD_CLOSE_DIR)
 304 #define _MD_READ_DIR                  (_PR_MD_READ_DIR)
 305
 306 /* --- Segment stuff --- */
 307 #define _MD_INIT_SEGS()
 308 #define _MD_ALLOC_SEGMENT(seg, size, vaddr)   0
 309 #define _MD_FREE_SEGMENT(seg)
 310
 311 /* --- Environment Stuff --- */
 312 #define _MD_GET_ENV                 (_PR_MD_GET_ENV)
 313 #define _MD_PUT_ENV                 (_PR_MD_PUT_ENV)
 314
 315 /* --- Threading Stuff --- */
 316 #define _MD_DEFAULT_STACK_SIZE      65536L
 317 #define _MD_INIT_THREAD             (_PR_MD_INIT_THREAD)
 318 #define _MD_INIT_ATTACHED_THREAD    (_PR_MD_INIT_THREAD)
 319 #define _MD_CREATE_THREAD           (_PR_MD_CREATE_THREAD)
 320 #define _MD_YIELD                   (_PR_MD_YIELD)
 321 #define _MD_SET_PRIORITY            (_PR_MD_SET_PRIORITY)
 322 #define _MD_CLEAN_THREAD            (_PR_MD_CLEAN_THREAD)
 323 #define _MD_SETTHREADAFFINITYMASK   (_PR_MD_SETTHREADAFFINITYMASK)
 324 #define _MD_GETTHREADAFFINITYMASK   (_PR_MD_GETTHREADAFFINITYMASK)
 325 #define _MD_EXIT_THREAD             (_PR_MD_EXIT_THREAD)
 326 #define _MD_SUSPEND_THREAD          (_PR_MD_SUSPEND_THREAD)
 327 #define _MD_RESUME_THREAD           (_PR_MD_RESUME_THREAD)
 328 #define _MD_SUSPEND_CPU             (_PR_MD_SUSPEND_CPU)
 329 #define _MD_RESUME_CPU              (_PR_MD_RESUME_CPU)
 330 #define _MD_WAKEUP_CPUS             (_PR_MD_WAKEUP_CPUS)
 331 #define _MD_BEGIN_SUSPEND_ALL()
 332 #define _MD_BEGIN_RESUME_ALL()
 333 #define _MD_END_SUSPEND_ALL()
 334 #define _MD_END_RESUME_ALL()
 335
 336 /* --- Lock stuff --- */
 337 #define _PR_LOCK                      _MD_LOCK
 338 #define _PR_UNLOCK                                        _MD_UNLOCK
 339
 340 #define _MD_NEW_LOCK                  (_PR_MD_NEW_LOCK)
 341 #define _MD_FREE_LOCK(lock)           (DosCloseMutexSem((lock)->mutex))
 342 #define _MD_LOCK(lock)                (DosRequestMutexSem((lock)->mutex, SEM_INDEFINITE_WAIT))
 343 #define _MD_TEST_AND_LOCK(lock)       (DosRequestMutexSem((lock)->mutex, SEM_INDEFINITE_WAIT),0)
 344 #define _MD_UNLOCK                    (_PR_MD_UNLOCK)
 345
 346 /* --- lock and cv waiting --- */
 347 #define _MD_WAIT                      (_PR_MD_WAIT)
 348 #define _MD_WAKEUP_WAITER             (_PR_MD_WAKEUP_WAITER)
 349
 350 /* --- CVar ------------------- */
 351 #define _MD_WAIT_CV                                       (_PR_MD_WAIT_CV)
 352 #define _MD_NEW_CV                                        (_PR_MD_NEW_CV)
 353 #define _MD_FREE_CV                                       (_PR_MD_FREE_CV)
 354 #define _MD_NOTIFY_CV                             (_PR_MD_NOTIFY_CV     )
 355 #define _MD_NOTIFYALL_CV                          (_PR_MD_NOTIFYALL_CV)
 356
 357    /* XXXMB- the IOQ stuff is certainly not working correctly yet. */
 358 /* extern  struct _MDLock              _pr_ioq_lock; */
 359 #define _MD_IOQ_LOCK()
 360 #define _MD_IOQ_UNLOCK()
 361
 362
 363 /* --- Initialization stuff --- */
 364 #define _MD_START_INTERRUPTS()
 365 #define _MD_STOP_INTERRUPTS()
 366 #define _MD_DISABLE_CLOCK_INTERRUPTS()
 367 #define _MD_ENABLE_CLOCK_INTERRUPTS()
 368 #define _MD_BLOCK_CLOCK_INTERRUPTS()
 369 #define _MD_UNBLOCK_CLOCK_INTERRUPTS()
 370 #define _MD_EARLY_INIT                (_PR_MD_EARLY_INIT)
 371 #define _MD_FINAL_INIT()
 372 #define _MD_INIT_CPUS()
 373 #define _MD_INIT_RUNNING_CPU(cpu)
 374
 375 struct PRProcess;
 376 struct PRProcessAttr;
 377
 378 #define _MD_CREATE_PROCESS _PR_CreateOS2Process
 379 extern struct PRProcess * _PR_CreateOS2Process(
 380     const char *path,
 381     char *const *argv,
 382     char *const *envp,
 383     const struct PRProcessAttr *attr
 384 );
 385
 386 #define _MD_DETACH_PROCESS _PR_DetachOS2Process
 387 extern PRStatus _PR_DetachOS2Process(struct PRProcess *process);
 388
 389 /* --- Wait for a child process to terminate --- */
 390 #define _MD_WAIT_PROCESS _PR_WaitOS2Process
 391 extern PRStatus _PR_WaitOS2Process(struct PRProcess *process,
 392     PRInt32 *exitCode);
 393
 394 #define _MD_KILL_PROCESS _PR_KillOS2Process
 395 extern PRStatus _PR_KillOS2Process(struct PRProcess *process);
 396
 397 #define _MD_CLEANUP_BEFORE_EXIT()
 398 #define _MD_EXIT                          (_PR_MD_EXIT)
 399 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
 400     PR_BEGIN_MACRO \
 401     *status = PR_TRUE; \
 402     PR_END_MACRO
 403 #define _MD_SWITCH_CONTEXT
 404 #define _MD_RESTORE_CONTEXT
 405
 406 /* --- Intervals --- */
 407 #define _MD_INTERVAL_INIT                 (_PR_MD_INTERVAL_INIT)
 408 #define _MD_GET_INTERVAL                  (_PR_MD_GET_INTERVAL)
 409 #define _MD_INTERVAL_PER_SEC              (_PR_MD_INTERVAL_PER_SEC)
 410 #define _MD_INTERVAL_PER_MILLISEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000)
 411 #define _MD_INTERVAL_PER_MICROSEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000000)
 412
 413 /* --- Native-Thread Specific Definitions ------------------------------- */
 414
 415 typedef struct __NSPR_TLS
 416 {
 417     struct PRThread  *_pr_thread_last_run;
 418     struct PRThread  *_pr_currentThread;
 419     struct _PRCPU    *_pr_currentCPU;
 420 } _NSPR_TLS;
 421
 422 extern _NSPR_TLS*  pThreadLocalStorage;
 423 NSPR_API(void) _PR_MD_ENSURE_TLS(void);
 424
 425 #define _MD_GET_ATTACHED_THREAD() pThreadLocalStorage->_pr_currentThread
 426 extern struct PRThread * _MD_CURRENT_THREAD(void);
 427 #define _MD_SET_CURRENT_THREAD(_thread) _PR_MD_ENSURE_TLS(); pThreadLocalStorage->_pr_currentThread = (_thread)
 428
 429 #define _MD_LAST_THREAD() pThreadLocalStorage->_pr_thread_last_run
 430 #define _MD_SET_LAST_THREAD(_thread) _PR_MD_ENSURE_TLS(); pThreadLocalStorage->_pr_thread_last_run = (_thread)
 431
 432 #define _MD_CURRENT_CPU() pThreadLocalStorage->_pr_currentCPU
 433 #define _MD_SET_CURRENT_CPU(_cpu) _PR_MD_ENSURE_TLS(); pThreadLocalStorage->_pr_currentCPU = (_cpu)
 434
 435 /* lth. #define _MD_SET_INTSOFF(_val) (_pr_ints_off = (_val)) */
 436 /* lth. #define _MD_GET_INTSOFF() _pr_ints_off */
 437 /* lth. #define _MD_INCREMENT_INTSOFF() (_pr_ints_off++) */
 438 /* lth. #define _MD_DECREMENT_INTSOFF() (_pr_ints_off--) */
 439
 440 /* --- Scheduler stuff --- */
 441 #define LOCK_SCHEDULER()                 0
 442 #define UNLOCK_SCHEDULER()               0
 443 #define _PR_LockSched()                  0
 444 #define _PR_UnlockSched()                0
 445
 446 /* --- Initialization stuff --- */
 447 #define _MD_INIT_LOCKS()
 448
 449 /* --- Stack stuff --- */
 450 #define _MD_INIT_STACK(stack, redzone)
 451 #define _MD_CLEAR_STACK(stack)
 452
 453 /* --- Memory-mapped files stuff --- not implemented on OS/2 */
 454
 455 struct _MDFileMap {
 456     PRInt8 unused;
 457 };
 458
 459 extern PRStatus _MD_CreateFileMap(struct PRFileMap *fmap, PRInt64 size);
 460 #define _MD_CREATE_FILE_MAP _MD_CreateFileMap
 461
 462 extern PRInt32 _MD_GetMemMapAlignment(void);
 463 #define _MD_GET_MEM_MAP_ALIGNMENT _MD_GetMemMapAlignment
 464
 465 extern void * _MD_MemMap(struct PRFileMap *fmap, PRInt64 offset,
 466         PRUint32 len);
 467 #define _MD_MEM_MAP _MD_MemMap
 468
 469 extern PRStatus _MD_MemUnmap(void *addr, PRUint32 size);
 470 #define _MD_MEM_UNMAP _MD_MemUnmap
 471
 472 extern PRStatus _MD_CloseFileMap(struct PRFileMap *fmap);
 473 #define _MD_CLOSE_FILE_MAP _MD_CloseFileMap
 474
 475 /* Some stuff for setting up thread contexts */
 476 typedef ULONG DWORD, *PDWORD;
 477
 478 /* The following definitions and two structures are new in OS/2 Warp 4.0.
 479  */
 480 #ifndef CONTEXT_CONTROL
 481 #define CONTEXT_CONTROL        0x00000001
 482 #define CONTEXT_INTEGER        0x00000002
 483 #define CONTEXT_SEGMENTS       0x00000004
 484 #define CONTEXT_FLOATING_POINT 0x00000008
 485 #define CONTEXT_FULL           0x0000000F
 486
 487 #pragma pack(2)
 488 typedef struct _FPREG {
 489     ULONG      losig;    /*  Low 32-bits of the significand. */
 490     ULONG      hisig;    /*  High 32-bits of the significand. */
 491     USHORT     signexp;  /*  Sign and exponent. */
 492 } FPREG;
 493 typedef struct _CONTEXTRECORD {
 494     ULONG     ContextFlags;
 495     ULONG     ctx_env[7];
 496     FPREG     ctx_stack[8];
 497     ULONG     ctx_SegGs;     /*  GS register. */
 498     ULONG     ctx_SegFs;     /*  FS register. */
 499     ULONG     ctx_SegEs;     /*  ES register. */
 500     ULONG     ctx_SegDs;     /*  DS register. */
 501     ULONG     ctx_RegEdi;    /*  EDI register. */
 502     ULONG     ctx_RegEsi;    /*  ESI register. */
 503     ULONG     ctx_RegEax;    /*  EAX register. */
 504     ULONG     ctx_RegEbx;    /*  EBX register. */
 505     ULONG     ctx_RegEcx;    /*  ECX register. */
 506     ULONG     ctx_RegEdx;    /*  EDX register. */
 507     ULONG     ctx_RegEbp;    /*  EBP register. */
 508     ULONG     ctx_RegEip;    /*  EIP register. */
 509     ULONG     ctx_SegCs;     /*  CS register. */
 510     ULONG     ctx_EFlags;    /*  EFLAGS register. */
 511     ULONG     ctx_RegEsp;    /*  ESP register. */
 512     ULONG     ctx_SegSs;     /*  SS register. */
 513 } CONTEXTRECORD, *PCONTEXTRECORD;
 514 #pragma pack()
 515 #endif
 516
 517 extern APIRET (* APIENTRY QueryThreadContext)(TID, ULONG, PCONTEXTRECORD);
 518
 519 /*
 520 #define _pr_tid            (((PTIB2)_getTIBvalue(offsetof(TIB, tib_ptib2)))->tib2_ultid)
 521 #define _pr_current_Thread (_system_tls[_pr_tid-1].__pr_current_thread)
 522 */
 523
 524 /* Some simple mappings of Windows API's to OS/2 API's to make our lives a
 525  * little bit easier.  Only add one here if it is a DIRECT mapping.  We are
 526  * not emulating anything.  Just mapping.
 527  */
 528 #define FreeLibrary(x) DosFreeModule((HMODULE)x)
 529 #define OutputDebugString(x)
 530
 531 extern int _MD_os2_get_nonblocking_connect_error(int osfd);
 532
 533 #endif /* nspr_os2_defs_h___ */