code.delx.au - gnu-emacs/blob - nt/inc/ms-w32.h

   1 /* System description file for Windows NT.
   2
   3 Copyright (C) 1993-1995, 2001-2014 Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software: you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation, either version 3 of the License, or
  10 (at your option) any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 /* Define symbols to identify the version of Unix this is.
  21    Define all the symbols that apply correctly.  */
  22
  23 #ifndef WINDOWSNT
  24 #define WINDOWSNT
  25 #endif
  26
  27 #include <mingw_time.h>
  28
  29 /* MinGW-w64 gcc does not automotically define a macro for
  30    differentiating it fom MinGW gcc. We need to test the presence of
  31    __MINGW64_VERSION_MAJOR in _mingw.h: */
  32 #ifdef __MINGW32__
  33 # include <_mingw.h>
  34 # ifdef __MINGW64_VERSION_MAJOR
  35 #  define MINGW_W64
  36 # endif
  37 #endif
  38
  39 /* #undef const */
  40
  41 /* Number of chars of output in the buffer of a stdio stream. */
  42 #ifdef __GNU_LIBRARY__
  43 #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->__bufp - (FILE)->__buffer)
  44 #else
  45 #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_ptr - (FILE)->_base)
  46 #endif
  47
  48 /* If you are compiling with a non-C calling convention but need to
  49    declare vararg routines differently, put it here.  */
  50 #define _VARARGS_ __cdecl
  51
  52 /* If you are providing a function to something that will call the
  53    function back (like a signal handler and signal, or main) its calling
  54    convention must be whatever standard the libraries expect.  */
  55 #define _CALLBACK_ __cdecl
  56
  57 /* Define HAVE_TIMEVAL if the system supports the BSD style clock values.
  58    Look in <sys/time.h> for a timeval structure.  */
  59 #define HAVE_TIMEVAL 1
  60
  61 /* But our select implementation doesn't allow us to make non-blocking
  62    connects.  So until that is fixed, this is necessary:  */
  63 #define BROKEN_NON_BLOCKING_CONNECT 1
  64
  65 /* And the select implementation does 1-byte read-ahead waiting
  66    for received packets, so datagrams are broken too.  */
  67 #define BROKEN_DATAGRAM_SOCKETS 1
  68
  69 #define MAIL_USE_SYSTEM_LOCK 1
  70
  71 /* Define to 1 if GCC-style __attribute__ ((__aligned__ (expr))) works. */
  72 #ifdef __GNUC__
  73 #define HAVE_ATTRIBUTE_ALIGNED 1
  74 #endif
  75
  76 /* Define to 1 if strtold conforms to C99. */
  77 #ifdef __GNUC__
  78 #define HAVE_C99_STRTOLD 1
  79 #endif
  80
  81 #if (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
  82 # ifndef HAVE___BUILTIN_UNWIND_INIT
  83 #  define HAVE___BUILTIN_UNWIND_INIT 1
  84 # endif
  85 #endif
  86
  87 /* This isn't perfect, as some systems might have the page file in
  88    another place.  Also, I suspect that the time stamp of that file
  89    might also change when Windows enlarges the file due to
  90    insufficient VM.  Still, this seems to be the most reliable way;
  91    the alternative (of using GetSystemTimes) won't work on laptops
  92    that hibernate, because the system clock is stopped then.  Other
  93    possibility would be to run "net statistics workstation" and parse
  94    the output, but that's gross.  So this should do; if the file is
  95    not there, the boot time will be returned as zero, and filelock.c
  96    already handles that.  */
  97 #define BOOT_TIME_FILE "C:/pagefile.sys"
  98
  99 /* ============================================================ */
 100
 101 /* Here, add any special hacks needed to make Emacs work on this
 102    system.  For example, you might define certain system call names
 103    that don't exist on your system, or that do different things on
 104    your system and must be used only through an encapsulation (which
 105    you should place, by convention, in sysdep.c).  */
 106
 107 #ifdef __GNUC__
 108 #ifndef __cplusplus
 109 #undef inline
 110 #endif
 111 #else  /* MSVC */
 112 #define inline __inline
 113 #endif
 114
 115 #ifdef __GNUC__
 116 /* config.h may have defined already.  */
 117 # ifndef restrict
 118 #  define restrict __restrict__
 119 # endif
 120 #else
 121   /* FIXME: should we define to __restrict, which MSVC supports? */
 122 # define restrict
 123 #endif
 124
 125 /* `mode_t' is not defined for MSVC. Define. */
 126 #ifdef _MSC_VER
 127 typedef unsigned short mode_t;
 128 #endif
 129
 130 /* A va_copy replacement for MSVC.  */
 131 #ifdef _MSC_VER
 132 # ifdef _WIN64
 133 #  ifndef va_copy               /* Need to be checked (?) */
 134 #   define va_copy(d,s) ((d) = (s))
 135 #  endif
 136 # else  /* not _WIN64 */
 137 #  define va_copy(d,s) ((d) = (s))
 138 # endif  /* not _WIN64 */
 139 #endif   /* _MSC_VER */
 140
 141 #ifndef WINDOWSNT
 142 /* Some of the files of Emacs which are intended for use with other
 143    programs assume that if you have a config.h file, you must declare
 144    the type of getenv.  */
 145 extern char *getenv ();
 146 #endif
 147
 148 /* Prevent accidental use of features unavailable in older Windows
 149    versions we still support.  MinGW64 defines this to a higher value
 150    in its system headers, and is not really compatible with values
 151    lower than 0x0500, so leave it alone.  */
 152 #ifndef MINGW_W64
 153 # define _WIN32_WINNT 0x0400
 154 #endif
 155
 156 /* Make a leaner executable.  */
 157 #define WIN32_LEAN_AND_MEAN 1
 158
 159 #include <sys/types.h>
 160
 161 #ifndef MAXPATHLEN
 162 #define MAXPATHLEN      _MAX_PATH
 163 #endif
 164
 165 /* This is used to hold UTF-8 encoded file names.  */
 166 #define MAX_UTF8_PATH   (MAXPATHLEN * 4)
 167
 168 #ifdef HAVE_NTGUI
 169 # ifndef HAVE_WINDOW_SYSTEM
 170 #  define HAVE_WINDOW_SYSTEM 1
 171 # endif
 172 #endif
 173
 174 /* Get some redefinitions in place.  */
 175
 176 #ifdef emacs
 177
 178 #ifdef MINGW_W64
 179 /* MinGW64 specific stuff.  */
 180 /* Make sure 'struct timespec' and 'struct timezone' are defined.  */
 181 #include <sys/types.h>
 182 #include <time.h>
 183 /* This prototype avoids MinGW64 compiler warnings due to the fact
 184    that time.h is included before localtime is redirected to
 185    sys_localtime below.  */
 186 extern struct tm * sys_localtime (const time_t *);
 187 /* MinGW64 uses a 2-argument _setjmp, and setjmp is a macro defined to
 188    supply the 2nd arg correctly, so don't use _setjmp directly in that
 189    case.  */
 190 #undef HAVE__SETJMP
 191 #endif
 192
 193 #ifdef _MSC_VER
 194 #include <sys/timeb.h>
 195 #include <sys/stat.h>
 196 #include <signal.h>
 197
 198 /* MSVC gets link-time errors without these redirections.  */
 199 #define fstat(a, b) sys_fstat(a, b)
 200 #define stat(a, b)  sys_stat(a, b)
 201 #define utime       sys_utime
 202 #endif
 203
 204 /* Calls that are emulated or shadowed.  */
 205 #undef chdir
 206 #define chdir   sys_chdir
 207 #undef chmod
 208 #define chmod   sys_chmod
 209 #undef close
 210 #define close   sys_close
 211 #undef creat
 212 #define creat   sys_creat
 213 #define ctime   sys_ctime
 214 #undef dup
 215 #define dup     sys_dup
 216 #undef dup2
 217 #define dup2    sys_dup2
 218 #define fopen   sys_fopen
 219 #define link    sys_link
 220 #define localtime sys_localtime
 221 #define mkdir   sys_mkdir
 222 #undef open
 223 #define open    sys_open
 224 #undef read
 225 #define read    sys_read
 226 #define rename  sys_rename
 227 #define rmdir   sys_rmdir
 228 #define select  sys_select
 229 #define pselect sys_select
 230 #define sleep   sys_sleep
 231 #define strerror sys_strerror
 232 #undef unlink
 233 #define unlink  sys_unlink
 234 #undef opendir
 235 #define opendir sys_opendir
 236 #undef closedir
 237 #define closedir sys_closedir
 238 #undef readdir
 239 #define readdir sys_readdir
 240 #undef seekdir
 241 #define seekdir sys_seekdir
 242 /* This prototype is needed because some files include config.h
 243    _after_ the standard headers, so sys_unlink gets no prototype from
 244    stdio.h or io.h.  */
 245 extern int sys_unlink (const char *);
 246 #undef write
 247 #define write   sys_write
 248 #undef umask
 249 #define umask   sys_umask
 250 extern int sys_umask (int);
 251
 252 /* Subprocess calls that are emulated.  */
 253 #define spawnve sys_spawnve
 254 #define kill    sys_kill
 255 #define signal  sys_signal
 256
 257 /* Internal signals.  */
 258 #define emacs_raise(sig) emacs_abort()
 259
 260 /* termcap.c calls that are emulated.  */
 261 #define tputs   sys_tputs
 262 #define tgetstr sys_tgetstr
 263
 264 /* cm.c calls that are emulated.  */
 265 #define chcheckmagic sys_chcheckmagic
 266 #define cmcostinit   sys_cmcostinit
 267 #define cmgoto       sys_cmgoto
 268 #define cmputc       sys_cmputc
 269 #define Wcm_clear    sys_Wcm_clear
 270
 271 #endif /* emacs */
 272
 273 /* Map to MSVC names.  */
 274 #define execlp    _execlp
 275 #define execvp    _execvp
 276 #define fdatasync _commit
 277 #define fdopen    _fdopen
 278 #define fsync     _commit
 279 #define ftruncate _chsize
 280 #define getpid    _getpid
 281 #ifdef _MSC_VER
 282 typedef int pid_t;
 283 #define snprintf  _snprintf
 284 #define strtoll   _strtoi64
 285 #define copysign  _copysign
 286 #endif
 287 #define isatty    _isatty
 288 #define _longjmp  longjmp
 289 /* MinGW64 defines lseek to invoke lseek64.  */
 290 #ifndef lseek
 291 #define lseek     _lseek
 292 #endif
 293 #define popen     _popen
 294 #define pclose    _pclose
 295 #define strdup    _strdup
 296 #define strupr    _strupr
 297 #define strnicmp  _strnicmp
 298 #define stricmp   _stricmp
 299 #define tzset     _tzset
 300
 301 /* We cannot include system header process.h, since there's src/process.h.  */
 302 int _getpid (void);
 303
 304 /* Include time.h before redirecting tzname, since MSVC's time.h
 305    defines _tzname to call a function, but also declares tzname a
 306    2-element array.  Having the redirection before including the
 307    header thus has the effect of declaring a function that returns an
 308    array, and triggers an error message.  */
 309 #include <time.h>
 310 #define tzname    _tzname
 311
 312 /* 'struct timespec' is used by time-related functions in lib/ and
 313    elsewhere, but we don't use lib/time.h where the structure is
 314    defined.  */
 315 /* MinGW64 defines 'struct timespec' and _TIMESPEC_DEFINED in sys/types.h.  */
 316 #ifndef _TIMESPEC_DEFINED
 317 struct timespec
 318 {
 319   time_t        tv_sec;         /* seconds */
 320   long int      tv_nsec;        /* nanoseconds */
 321 };
 322 #endif
 323
 324 /* Required for functions in lib/time_r.c, since we don't use lib/time.h.  */
 325 extern struct tm *gmtime_r (time_t const * restrict, struct tm * restrict);
 326 extern struct tm *localtime_r (time_t const * restrict, struct tm * restrict);
 327
 328 #ifdef _MSC_VER
 329 /* This is hacky, but is necessary to avoid warnings about macro
 330    redefinitions using the MSVC compilers, since, when __STDC__ is
 331    undefined or zero, those compilers declare functions like fileno,
 332    lseek, and chdir, for which we defined macros above.  */
 333 #ifndef __STDC__
 334 #define __STDC__ 1
 335 #define MUST_UNDEF__STDC__
 336 #endif
 337 #include <direct.h>
 338 #include <io.h>
 339 #include <stdio.h>
 340 #ifdef MUST_UNDEF__STDC__
 341 #undef __STDC__
 342 #undef MUST_UNDEF__STDC__
 343 #endif
 344 #else  /* !_MSC_VER */
 345 #include <direct.h>
 346 #include <io.h>
 347 #include <stdio.h>
 348 #endif  /* !_MSC_VER */
 349 #ifndef fileno
 350 #define fileno    _fileno
 351 #endif
 352
 353 /* Defines that we need that aren't in the standard signal.h.  */
 354 #define SIGHUP  1               /* Hang up */
 355 #define SIGQUIT 3               /* Quit process */
 356 #define SIGTRAP 5               /* Trace trap */
 357 #define SIGKILL 9               /* Die, die die */
 358 #define SIGPIPE 13              /* Write on pipe with no readers */
 359 #define SIGALRM 14              /* Alarm */
 360 #define SIGCHLD 18              /* Death of child */
 361 #define SIGPROF 19              /* Profiling */
 362
 363 #ifndef NSIG
 364 #define NSIG 23
 365 #endif
 366
 367 #ifndef ENOTSUP
 368 #define ENOTSUP ENOSYS
 369 #endif
 370
 371 /* In case lib/errno.h is not used.  */
 372 #ifndef EOPNOTSUPP
 373 #define EOPNOTSUPP 130
 374 #endif
 375
 376 #ifdef _MSC_VER
 377 typedef int sigset_t;
 378 typedef int ssize_t;
 379 #endif
 380
 381 #ifdef MINGW_W64
 382 #ifndef _POSIX
 383 typedef _sigset_t sigset_t;
 384 #endif
 385 #endif
 386
 387 typedef void (_CALLBACK_ *signal_handler) (int);
 388 extern signal_handler sys_signal (int, signal_handler);
 389
 390 struct sigaction {
 391   int sa_flags;
 392   void (_CALLBACK_ *sa_handler)(int);
 393   sigset_t sa_mask;
 394 };
 395 #define SA_RESTART      0
 396 #define SIG_BLOCK       1
 397 #define SIG_SETMASK     2
 398 #define SIG_UNBLOCK     3
 399
 400 extern int sigemptyset (sigset_t *);
 401 extern int sigaddset (sigset_t *, int);
 402 extern int sigfillset (sigset_t *);
 403 extern int sigprocmask (int, const sigset_t *, sigset_t *);
 404 /* MinGW64 defines pthread_sigmask as zero in its pthread_signal.h
 405    header, but we have an implementation for that function in w32proc.c.  */
 406 #ifdef pthread_sigmask
 407 #undef pthread_sigmask
 408 #endif
 409 extern int pthread_sigmask (int, const sigset_t *, sigset_t *);
 410 extern int sigismember (const sigset_t *, int);
 411 extern int setpgrp (int, int);
 412 extern int sigaction (int, const struct sigaction *, struct sigaction *);
 413 extern int alarm (int);
 414
 415 extern int sys_kill (pid_t, int);
 416
 417
 418 /* For integration with MSDOS support.  */
 419 #define getdisk()               (_getdrive () - 1)
 420 #ifdef emacs
 421 #define getdefdir(_drv, _buf)   ((_buf[0] = (_drv + 'A' - 1), _buf[1] = ':', _buf[2] = '/', _buf[3] = 0), 1)
 422 #else
 423 #define getdefdir(_drv, _buf)   _getdcwd (_drv, _buf, MAXPATHLEN)
 424 #endif
 425
 426 #ifndef EMACS_CONFIGURATION
 427 extern char *get_emacs_configuration (void);
 428 extern char *get_emacs_configuration_options (void);
 429 #define EMACS_CONFIGURATION     get_emacs_configuration ()
 430 #define EMACS_CONFIG_OPTIONS    get_emacs_configuration_options ()
 431 #endif
 432
 433 /* Define this so that winsock.h definitions don't get included with
 434    windows.h.  For this to have proper effect, config.h must always be
 435    included before windows.h.  */
 436 #define _WINSOCKAPI_    1
 437 #define _WINSOCK_H
 438
 439 /* Defines size_t and alloca ().  */
 440 #ifdef emacs
 441 #define malloc e_malloc
 442 #define free   e_free
 443 #define realloc e_realloc
 444 #define calloc e_calloc
 445 #endif
 446 #ifdef _MSC_VER
 447 #define alloca _alloca
 448 #else
 449 #include <malloc.h>
 450 #endif
 451
 452 #include <stdlib.h>
 453 #include <sys/stat.h>
 454
 455 /* Define for those source files that do not include enough NT system files.  */
 456 #ifndef NULL
 457 #ifdef __cplusplus
 458 #define NULL    0
 459 #else
 460 #define NULL    ((void *)0)
 461 #endif
 462 #endif
 463
 464 /* For proper declaration of environ.  */
 465 #ifndef sys_nerr
 466 #define sys_nerr _sys_nerr
 467 #endif
 468
 469 /* This must be after including stdlib.h, which defines putenv on MinGW.  */
 470 #ifdef putenv
 471 # undef putenv
 472 #endif
 473 #define putenv    sys_putenv
 474 extern int sys_putenv (char *);
 475
 476 extern int getloadavg (double *, int);
 477 extern int getpagesize (void);
 478
 479 extern void * memrchr (void const *, int, size_t);
 480
 481 extern int mkostemp (char *, int);
 482
 483
 484 #if defined (__MINGW32__)
 485
 486 /* Define to 1 if the system has the type `long long int'. */
 487 # ifndef HAVE_LONG_LONG_INT
 488 #  define HAVE_LONG_LONG_INT 1
 489 # endif
 490
 491 /* Define to 1 if the system has the type `unsigned long long int'. */
 492 # ifndef HAVE_UNSIGNED_LONG_LONG_INT
 493 #  define HAVE_UNSIGNED_LONG_LONG_INT 1
 494 # endif
 495
 496 #endif
 497
 498 #ifdef _MSC_VER
 499 # if defined(_WIN64)
 500 typedef __int64 EMACS_INT;
 501 typedef unsigned __int64 EMACS_UINT;
 502 #  define EMACS_INT_MAX           LLONG_MAX
 503 #  define PRIuMAX                 "llu"
 504 #  define pI                      "ll"
 505 /* Fix a bug in MSVC headers : stdint.h */
 506 #  define _INTPTR 2
 507 # elif defined(_WIN32)
 508 /* Temporarily disable wider-than-pointer integers until they're tested more.
 509    Build with CFLAGS='-DWIDE_EMACS_INT' to try them out.  */
 510
 511 #  ifdef WIDE_EMACS_INT
 512
 513 /* Use pre-C99-style 64-bit integers.  */
 514 typedef __int64 EMACS_INT;
 515 typedef unsigned __int64 EMACS_UINT;
 516 #   define EMACS_INT_MAX           LLONG_MAX
 517 #   define PRIuMAX                 "llu"
 518 #   define pI                     "I64"
 519 #  else
 520 typedef int EMACS_INT;
 521 typedef unsigned int EMACS_UINT;
 522 #   define EMACS_INT_MAX           LONG_MAX
 523 #   define PRIuMAX                 "lu"
 524 #   define pI                     "l"
 525 #  endif
 526 # endif
 527 #endif
 528
 529 /* We need a little extra space, see ../../lisp/loadup.el.  */
 530 #define SYSTEM_PURESIZE_EXTRA 50000
 531
 532 #define DATA_START      get_data_start ()
 533
 534 /* For unexec to work on Alpha systems, we need to put Emacs'
 535    initialized data into a separate section from the CRT initialized
 536    data (because the Alpha linker freely reorders data variables, even
 537    across libraries, so our data and the CRT data get intermingled).
 538
 539    Starting with MSVC 5.0, we must also place the uninitialized data
 540    into its own section.  VC5 intermingles uninitialized data from the CRT
 541    between Emacs' static uninitialized data and its public uninitialized
 542    data.  A separate .bss section for Emacs groups both static and
 543    public uninitialized together.
 544
 545    Note that unexw32.c relies on this fact, and must be modified
 546    accordingly if this section name is changed, or if this pragma is
 547    removed.  Also, obviously, all files that define initialized data
 548    must include config.h to pick up this pragma.  */
 549
 550 /* Names must be < 8 bytes.  */
 551 #ifdef _MSC_VER
 552 #pragma data_seg("EMDATA")
 553 #pragma bss_seg("EMBSS")
 554 #endif
 555
 556 /* #define FULL_DEBUG */
 557 /* #define EMACSDEBUG */
 558
 559 #ifdef EMACSDEBUG
 560 extern void _DebPrint (const char *fmt, ...);
 561 #define DebPrint(stuff) _DebPrint stuff
 562 #else
 563 #define DebPrint(stuff)
 564 #endif
 565
 566 #ifdef _MSC_VER
 567 #if _MSC_VER >= 800 && !defined(__cplusplus)
 568 /* Unnamed type definition in parentheses.
 569    A structure, union, or enumerated type with no name is defined in a
 570    parenthetical expression.  The type definition is meaningless.  */
 571 #pragma warning(disable:4116)
 572 /* 'argument' : conversion from 'type1' to 'type2', possible loss of
 573    data A floating point type was converted to an integer type.  A
 574    possible loss of data may have occurred.  */
 575 #pragma warning(disable:4244)
 576 /* Negative integral constant converted to unsigned type.
 577    An expression converts a negative integer constant to an unsigned type.
 578    The result of the expression is probably meaningless.  */
 579 #pragma warning(disable:4308)
 580 #endif
 581 #endif
 582
 583
 584 /* ============================================================ */