include/wine/port.h

   1 /*
   2  * Wine porting definitions
   3  *
   4  * Copyright 1996 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #ifndef __WINE_WINE_PORT_H
  22 #define __WINE_WINE_PORT_H
  23
  24 #ifndef __WINE_CONFIG_H
  25 # error You must include config.h to use this header
  26 #endif
  27
  28 #ifdef __WINE_BASETSD_H
  29 # error You must include port.h before all other headers
  30 #endif
  31
  32 #define _GNU_SOURCE  /* for pread/pwrite */
  33 #include <fcntl.h>
  34 #include <math.h>
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37 #ifdef HAVE_DIRECT_H
  38 # include <direct.h>
  39 #endif
  40 #ifdef HAVE_IO_H
  41 # include <io.h>
  42 #endif
  43 #ifdef HAVE_PROCESS_H
  44 # include <process.h>
  45 #endif
  46 #include <string.h>
  47 #ifdef HAVE_UNISTD_H
  48 # include <unistd.h>
  49 #endif
  50
  51
  52 /****************************************************************
  53  * Type definitions
  54  */
  55
  56 #if !defined(_MSC_VER) && !defined(__int64)
  57 #  if defined(__x86_64__) || defined(_WIN64)
  58 #    define __int64 long
  59 #  else
  60 #    define __int64 long long
  61 #  endif
  62 #endif
  63
  64 #ifndef HAVE_MODE_T
  65 typedef int mode_t;
  66 #endif
  67 #ifndef HAVE_OFF_T
  68 typedef long off_t;
  69 #endif
  70 #ifndef HAVE_PID_T
  71 typedef int pid_t;
  72 #endif
  73 #ifndef HAVE_SIZE_T
  74 typedef unsigned int size_t;
  75 #endif
  76 #ifndef HAVE_SSIZE_T
  77 typedef int ssize_t;
  78 #endif
  79 #ifndef HAVE_FSBLKCNT_T
  80 typedef unsigned long fsblkcnt_t;
  81 #endif
  82 #ifndef HAVE_FSFILCNT_T
  83 typedef unsigned long fsfilcnt_t;
  84 #endif
  85
  86 #ifndef HAVE_STRUCT_STATVFS_F_BLOCKS
  87 struct statvfs
  88 {
  89     unsigned long f_bsize;
  90     unsigned long f_frsize;
  91     fsblkcnt_t    f_blocks;
  92     fsblkcnt_t    f_bfree;
  93     fsblkcnt_t    f_bavail;
  94     fsfilcnt_t    f_files;
  95     fsfilcnt_t    f_ffree;
  96     fsfilcnt_t    f_favail;
  97     unsigned long f_fsid;
  98     unsigned long f_flag;
  99     unsigned long f_namemax;
 100 };
 101 #endif /* HAVE_STRUCT_STATVFS_F_BLOCKS */
 102
 103
 104 /****************************************************************
 105  * Macro definitions
 106  */
 107
 108 #ifdef HAVE_DLFCN_H
 109 #include <dlfcn.h>
 110 #else
 111 #define RTLD_LAZY    0x001
 112 #define RTLD_NOW     0x002
 113 #define RTLD_GLOBAL  0x100
 114 #endif
 115
 116 #ifdef HAVE_ONE_ARG_MKDIR
 117 #define mkdir(path,mode) mkdir(path)
 118 #endif
 119
 120 #if !defined(HAVE_FTRUNCATE) && defined(HAVE_CHSIZE)
 121 #define ftruncate chsize
 122 #endif
 123
 124 #if !defined(HAVE_POPEN) && defined(HAVE__POPEN)
 125 #define popen _popen
 126 #endif
 127
 128 #if !defined(HAVE_PCLOSE) && defined(HAVE__PCLOSE)
 129 #define pclose _pclose
 130 #endif
 131
 132 #if !defined(HAVE_STRDUP) && defined(HAVE__STRDUP)
 133 #define strdup _strdup
 134 #endif
 135
 136 #if !defined(HAVE_SNPRINTF) && defined(HAVE__SNPRINTF)
 137 #define snprintf _snprintf
 138 #endif
 139
 140 #if !defined(HAVE_VSNPRINTF) && defined(HAVE__VSNPRINTF)
 141 #define vsnprintf _vsnprintf
 142 #endif
 143
 144 #if !defined(HAVE_STRTOLL) && defined(HAVE__STRTOI64)
 145 #define strtoll _strtoi64
 146 #endif
 147
 148 #if !defined(HAVE_STRTOULL) && defined(HAVE__STRTOUI64)
 149 #define strtoull _strtoui64
 150 #endif
 151
 152 #ifndef S_ISLNK
 153 # define S_ISLNK(mod) (0)
 154 #endif
 155
 156 #ifndef S_ISSOCK
 157 # define S_ISSOCK(mod) (0)
 158 #endif
 159
 160 #ifndef S_ISDIR
 161 # define S_ISDIR(mod) (((mod) & _S_IFMT) == _S_IFDIR)
 162 #endif
 163
 164 #ifndef S_ISCHR
 165 # define S_ISCHR(mod) (((mod) & _S_IFMT) == _S_IFCHR)
 166 #endif
 167
 168 #ifndef S_ISFIFO
 169 # define S_ISFIFO(mod) (((mod) & _S_IFMT) == _S_IFIFO)
 170 #endif
 171
 172 #ifndef S_ISREG
 173 # define S_ISREG(mod) (((mod) & _S_IFMT) == _S_IFREG)
 174 #endif
 175
 176 /* So we open files in 64 bit access mode on Linux */
 177 #ifndef O_LARGEFILE
 178 # define O_LARGEFILE 0
 179 #endif
 180
 181 #ifndef O_NONBLOCK
 182 # define O_NONBLOCK 0
 183 #endif
 184
 185 #ifndef O_BINARY
 186 # define O_BINARY 0
 187 #endif
 188
 189
 190 /****************************************************************
 191  * Constants
 192  */
 193
 194 #ifndef M_PI
 195 #define M_PI 3.14159265358979323846
 196 #endif
 197
 198 #ifndef M_PI_2
 199 #define M_PI_2 1.570796326794896619
 200 #endif
 201
 202 #ifndef NAN
 203 static inline float __port_nan(void)
 204 {
 205     static const unsigned __nan_bytes = 0x7fc00000;
 206     return *(const float *)&__nan_bytes;
 207 }
 208 #define NAN __port_nan()
 209 #endif
 210
 211
 212 /****************************************************************
 213  * Function definitions (only when using libwine_port)
 214  */
 215
 216 #ifndef NO_LIBWINE_PORT
 217
 218 #ifndef HAVE_FSTATVFS
 219 int fstatvfs( int fd, struct statvfs *buf );
 220 #endif
 221
 222 #ifndef HAVE_GETOPT_LONG
 223 extern char *optarg;
 224 extern int optind;
 225 extern int opterr;
 226 extern int optopt;
 227 struct option;
 228
 229 #ifndef HAVE_STRUCT_OPTION_NAME
 230 struct option
 231 {
 232     const char *name;
 233     int has_arg;
 234     int *flag;
 235     int val;
 236 };
 237 #endif
 238
 239 extern int getopt_long (int ___argc, char *const *___argv,
 240                         const char *__shortopts,
 241                         const struct option *__longopts, int *__longind);
 242 extern int getopt_long_only (int ___argc, char *const *___argv,
 243                              const char *__shortopts,
 244                              const struct option *__longopts, int *__longind);
 245 #endif  /* HAVE_GETOPT_LONG */
 246
 247 #ifndef HAVE_FFS
 248 int ffs( int x );
 249 #endif
 250
 251 #ifndef HAVE_FUTIMES
 252 struct timeval;
 253 int futimes(int fd, const struct timeval *tv);
 254 #endif
 255
 256 #ifndef HAVE_GETPAGESIZE
 257 size_t getpagesize(void);
 258 #endif  /* HAVE_GETPAGESIZE */
 259
 260 #ifndef HAVE_ISINF
 261 int isinf(double x);
 262 #endif
 263
 264 #ifndef HAVE_ISNAN
 265 int isnan(double x);
 266 #endif
 267
 268 #ifndef HAVE_LSTAT
 269 int lstat(const char *file_name, struct stat *buf);
 270 #endif /* HAVE_LSTAT */
 271
 272 #ifndef HAVE_MEMMOVE
 273 void *memmove(void *dest, const void *src, size_t len);
 274 #endif /* !defined(HAVE_MEMMOVE) */
 275
 276 #ifndef HAVE_POLL
 277 struct pollfd
 278 {
 279     int fd;
 280     short events;
 281     short revents;
 282 };
 283 #define POLLIN   0x01
 284 #define POLLPRI  0x02
 285 #define POLLOUT  0x04
 286 #define POLLERR  0x08
 287 #define POLLHUP  0x10
 288 #define POLLNVAL 0x20
 289 int poll( struct pollfd *fds, unsigned int count, int timeout );
 290 #endif /* HAVE_POLL */
 291
 292 #ifndef HAVE_PREAD
 293 ssize_t pread( int fd, void *buf, size_t count, off_t offset );
 294 #endif /* HAVE_PREAD */
 295
 296 #ifndef HAVE_PWRITE
 297 ssize_t pwrite( int fd, const void *buf, size_t count, off_t offset );
 298 #endif /* HAVE_PWRITE */
 299
 300 #ifndef HAVE_READLINK
 301 int readlink( const char *path, char *buf, size_t size );
 302 #endif /* HAVE_READLINK */
 303
 304 #ifndef HAVE_STATVFS
 305 int statvfs( const char *path, struct statvfs *buf );
 306 #endif
 307
 308 #ifndef HAVE_STRNCASECMP
 309 # ifndef HAVE__STRNICMP
 310 int strncasecmp(const char *str1, const char *str2, size_t n);
 311 # else
 312 # define strncasecmp _strnicmp
 313 # endif
 314 #endif /* !defined(HAVE_STRNCASECMP) */
 315
 316 #ifndef HAVE_STRERROR
 317 const char *strerror(int err);
 318 #endif /* !defined(HAVE_STRERROR) */
 319
 320 #ifndef HAVE_STRCASECMP
 321 # ifndef HAVE__STRICMP
 322 int strcasecmp(const char *str1, const char *str2);
 323 # else
 324 # define strcasecmp _stricmp
 325 # endif
 326 #endif /* !defined(HAVE_STRCASECMP) */
 327
 328 #ifndef HAVE_SYMLINK
 329 int symlink(const char *from, const char *to);
 330 #endif
 331
 332 #ifndef HAVE_USLEEP
 333 int usleep (unsigned int useconds);
 334 #endif /* !defined(HAVE_USLEEP) */
 335
 336 #ifdef __i386__
 337 static inline void *memcpy_unaligned( void *dst, const void *src, size_t size )
 338 {
 339     return memcpy( dst, src, size );
 340 }
 341 #else
 342 extern void *memcpy_unaligned( void *dst, const void *src, size_t size );
 343 #endif /* __i386__ */
 344
 345 extern int mkstemps(char *template, int suffix_len);
 346
 347 /* Process creation flags */
 348 #ifndef _P_WAIT
 349 # define _P_WAIT    0
 350 # define _P_NOWAIT  1
 351 # define _P_OVERLAY 2
 352 # define _P_NOWAITO 3
 353 # define _P_DETACH  4
 354 #endif
 355 #ifndef HAVE_SPAWNVP
 356 extern int spawnvp(int mode, const char *cmdname, const char * const argv[]);
 357 #endif
 358
 359 /* Interlocked functions */
 360
 361 #if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
 362
 363 extern __int64 interlocked_cmpxchg64( __int64 *dest, __int64 xchg, __int64 compare );
 364
 365 static inline int interlocked_cmpxchg( int *dest, int xchg, int compare )
 366 {
 367     int ret;
 368     __asm__ __volatile__( "lock; cmpxchgl %2,(%1)"
 369                           : "=a" (ret) : "r" (dest), "r" (xchg), "0" (compare) : "memory" );
 370     return ret;
 371 }
 372
 373 static inline void *interlocked_cmpxchg_ptr( void **dest, void *xchg, void *compare )
 374 {
 375     void *ret;
 376 #ifdef __x86_64__
 377     __asm__ __volatile__( "lock; cmpxchgq %2,(%1)"
 378                           : "=a" (ret) : "r" (dest), "r" (xchg), "0" (compare) : "memory" );
 379 #else
 380     __asm__ __volatile__( "lock; cmpxchgl %2,(%1)"
 381                           : "=a" (ret) : "r" (dest), "r" (xchg), "0" (compare) : "memory" );
 382 #endif
 383     return ret;
 384 }
 385
 386 static inline int interlocked_xchg( int *dest, int val )
 387 {
 388     int ret;
 389     __asm__ __volatile__( "lock; xchgl %0,(%1)"
 390                           : "=r" (ret) : "r" (dest), "0" (val) : "memory" );
 391     return ret;
 392 }
 393
 394 static inline void *interlocked_xchg_ptr( void **dest, void *val )
 395 {
 396     void *ret;
 397 #ifdef __x86_64__
 398     __asm__ __volatile__( "lock; xchgq %0,(%1)"
 399                           : "=r" (ret) :"r" (dest), "0" (val) : "memory" );
 400 #else
 401     __asm__ __volatile__( "lock; xchgl %0,(%1)"
 402                           : "=r" (ret) : "r" (dest), "0" (val) : "memory" );
 403 #endif
 404     return ret;
 405 }
 406
 407 static inline int interlocked_xchg_add( int *dest, int incr )
 408 {
 409     int ret;
 410     __asm__ __volatile__( "lock; xaddl %0,(%1)"
 411                           : "=r" (ret) : "r" (dest), "0" (incr) : "memory" );
 412     return ret;
 413 }
 414
 415 #ifdef __x86_64__
 416 static inline unsigned char interlocked_cmpxchg128( __int64 *dest, __int64 xchg_high,
 417                                                     __int64 xchg_low, __int64 *compare )
 418 {
 419     unsigned char ret;
 420     __asm__ __volatile__( "lock cmpxchg16b %0; setz %b2"
 421                           : "=m" (dest[0]), "=m" (dest[1]), "=r" (ret),
 422                             "=a" (compare[0]), "=d" (compare[1])
 423                           : "m" (dest[0]), "m" (dest[1]), "3" (compare[0]), "4" (compare[1]),
 424                             "c" (xchg_high), "b" (xchg_low) );
 425     return ret;
 426 }
 427 #endif
 428
 429 #else  /* __GNUC__ */
 430
 431 extern int interlocked_cmpxchg( int *dest, int xchg, int compare );
 432 extern void *interlocked_cmpxchg_ptr( void **dest, void *xchg, void *compare );
 433 extern __int64 interlocked_cmpxchg64( __int64 *dest, __int64 xchg, __int64 compare );
 434 extern int interlocked_xchg( int *dest, int val );
 435 extern void *interlocked_xchg_ptr( void **dest, void *val );
 436 extern int interlocked_xchg_add( int *dest, int incr );
 437 #ifdef _WIN64
 438 extern unsigned char interlocked_cmpxchg128( __int64 *dest, __int64 xchg_high,
 439                                              __int64 xchg_low, __int64 *compare );
 440 #endif
 441
 442 #endif  /* __GNUC__ */
 443
 444 #else /* NO_LIBWINE_PORT */
 445
 446 #define __WINE_NOT_PORTABLE(func) func##_is_not_portable func##_is_not_portable
 447
 448 #define ffs                     __WINE_NOT_PORTABLE(ffs)
 449 #define fstatvfs                __WINE_NOT_PORTABLE(fstatvfs)
 450 #define futimes                 __WINE_NOT_PORTABLE(futimes)
 451 #define getopt_long             __WINE_NOT_PORTABLE(getopt_long)
 452 #define getopt_long_only        __WINE_NOT_PORTABLE(getopt_long_only)
 453 #define getpagesize             __WINE_NOT_PORTABLE(getpagesize)
 454 #define interlocked_cmpxchg     __WINE_NOT_PORTABLE(interlocked_cmpxchg)
 455 #define interlocked_cmpxchg_ptr __WINE_NOT_PORTABLE(interlocked_cmpxchg_ptr)
 456 #define interlocked_xchg        __WINE_NOT_PORTABLE(interlocked_xchg)
 457 #define interlocked_xchg_ptr    __WINE_NOT_PORTABLE(interlocked_xchg_ptr)
 458 #define interlocked_xchg_add    __WINE_NOT_PORTABLE(interlocked_xchg_add)
 459 #define lstat                   __WINE_NOT_PORTABLE(lstat)
 460 #define memcpy_unaligned        __WINE_NOT_PORTABLE(memcpy_unaligned)
 461 #undef memmove
 462 #define memmove                 __WINE_NOT_PORTABLE(memmove)
 463 #define pread                   __WINE_NOT_PORTABLE(pread)
 464 #define pwrite                  __WINE_NOT_PORTABLE(pwrite)
 465 #define spawnvp                 __WINE_NOT_PORTABLE(spawnvp)
 466 #define statvfs                 __WINE_NOT_PORTABLE(statvfs)
 467 #define strcasecmp              __WINE_NOT_PORTABLE(strcasecmp)
 468 #define strerror                __WINE_NOT_PORTABLE(strerror)
 469 #define strncasecmp             __WINE_NOT_PORTABLE(strncasecmp)
 470 #define usleep                  __WINE_NOT_PORTABLE(usleep)
 471
 472 #endif /* NO_LIBWINE_PORT */
 473
 474 #endif /* !defined(__WINE_WINE_PORT_H) */