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 #include <stdlib.h>
  48 #ifdef HAVE_UNISTD_H
  49 # include <unistd.h>
  50 #endif
  51
  52
  53 /****************************************************************
  54  * Type definitions
  55  */
  56
  57 #if !defined(_MSC_VER) && !defined(__int64)
  58 #  if defined(__x86_64__) || defined(__aarch64__) || defined(_WIN64)
  59 #    define __int64 long
  60 #  else
  61 #    define __int64 long long
  62 #  endif
  63 #endif
  64
  65 #ifndef HAVE_MODE_T
  66 typedef int mode_t;
  67 #endif
  68 #ifndef HAVE_OFF_T
  69 typedef long off_t;
  70 #endif
  71 #ifndef HAVE_PID_T
  72 typedef int pid_t;
  73 #endif
  74 #ifndef HAVE_SIZE_T
  75 typedef unsigned int size_t;
  76 #endif
  77 #ifndef HAVE_SSIZE_T
  78 typedef int ssize_t;
  79 #endif
  80 #ifndef HAVE_FSBLKCNT_T
  81 typedef unsigned long fsblkcnt_t;
  82 #endif
  83 #ifndef HAVE_FSFILCNT_T
  84 typedef unsigned long fsfilcnt_t;
  85 #endif
  86
  87 #ifndef HAVE_STRUCT_STATVFS_F_BLOCKS
  88 struct statvfs
  89 {
  90     unsigned long f_bsize;
  91     unsigned long f_frsize;
  92     fsblkcnt_t    f_blocks;
  93     fsblkcnt_t    f_bfree;
  94     fsblkcnt_t    f_bavail;
  95     fsfilcnt_t    f_files;
  96     fsfilcnt_t    f_ffree;
  97     fsfilcnt_t    f_favail;
  98     unsigned long f_fsid;
  99     unsigned long f_flag;
 100     unsigned long f_namemax;
 101 };
 102 #endif /* HAVE_STRUCT_STATVFS_F_BLOCKS */
 103
 104
 105 /****************************************************************
 106  * Macro definitions
 107  */
 108
 109 #ifdef HAVE_DLFCN_H
 110 #include <dlfcn.h>
 111 #else
 112 #define RTLD_LAZY    0x001
 113 #define RTLD_NOW     0x002
 114 #define RTLD_GLOBAL  0x100
 115 #endif
 116
 117 #ifdef HAVE_ONE_ARG_MKDIR
 118 #define mkdir(path,mode) mkdir(path)
 119 #endif
 120
 121 #if !defined(HAVE_FTRUNCATE) && defined(HAVE_CHSIZE)
 122 #define ftruncate chsize
 123 #endif
 124
 125 #if !defined(HAVE_POPEN) && defined(HAVE__POPEN)
 126 #define popen _popen
 127 #endif
 128
 129 #if !defined(HAVE_PCLOSE) && defined(HAVE__PCLOSE)
 130 #define pclose _pclose
 131 #endif
 132
 133 #if !defined(HAVE_STRDUP) && defined(HAVE__STRDUP)
 134 #define strdup _strdup
 135 #endif
 136
 137 #if !defined(HAVE_SNPRINTF) && defined(HAVE__SNPRINTF)
 138 #define snprintf _snprintf
 139 #endif
 140
 141 #if !defined(HAVE_VSNPRINTF) && defined(HAVE__VSNPRINTF)
 142 #define vsnprintf _vsnprintf
 143 #endif
 144
 145 #if !defined(HAVE_STRTOLL) && defined(HAVE__STRTOI64)
 146 #define strtoll _strtoi64
 147 #endif
 148
 149 #if !defined(HAVE_STRTOULL) && defined(HAVE__STRTOUI64)
 150 #define strtoull _strtoui64
 151 #endif
 152
 153 #ifndef S_ISLNK
 154 # define S_ISLNK(mod) (0)
 155 #endif
 156
 157 #ifndef S_ISSOCK
 158 # define S_ISSOCK(mod) (0)
 159 #endif
 160
 161 #ifndef S_ISDIR
 162 # define S_ISDIR(mod) (((mod) & _S_IFMT) == _S_IFDIR)
 163 #endif
 164
 165 #ifndef S_ISCHR
 166 # define S_ISCHR(mod) (((mod) & _S_IFMT) == _S_IFCHR)
 167 #endif
 168
 169 #ifndef S_ISFIFO
 170 # define S_ISFIFO(mod) (((mod) & _S_IFMT) == _S_IFIFO)
 171 #endif
 172
 173 #ifndef S_ISREG
 174 # define S_ISREG(mod) (((mod) & _S_IFMT) == _S_IFREG)
 175 #endif
 176
 177 /* So we open files in 64 bit access mode on Linux */
 178 #ifndef O_LARGEFILE
 179 # define O_LARGEFILE 0
 180 #endif
 181
 182 #ifndef O_NONBLOCK
 183 # define O_NONBLOCK 0
 184 #endif
 185
 186 #ifndef O_BINARY
 187 # define O_BINARY 0
 188 #endif
 189
 190
 191 /****************************************************************
 192  * Constants
 193  */
 194
 195 #ifndef M_PI
 196 #define M_PI 3.14159265358979323846
 197 #endif
 198
 199 #ifndef M_PI_2
 200 #define M_PI_2 1.570796326794896619
 201 #endif
 202
 203 #ifndef INFINITY
 204 static inline float __port_infinity(void)
 205 {
 206     static const unsigned __inf_bytes = 0x7f800000;
 207     return *(const float *)&__inf_bytes;
 208 }
 209 #define INFINITY __port_infinity()
 210 #endif
 211
 212 #ifndef NAN
 213 static inline float __port_nan(void)
 214 {
 215     static const unsigned __nan_bytes = 0x7fc00000;
 216     return *(const float *)&__nan_bytes;
 217 }
 218 #define NAN __port_nan()
 219 #endif
 220
 221
 222 /****************************************************************
 223  * Function definitions (only when using libwine_port)
 224  */
 225
 226 #ifndef NO_LIBWINE_PORT
 227
 228 #ifndef HAVE_FSTATVFS
 229 int fstatvfs( int fd, struct statvfs *buf );
 230 #endif
 231
 232 #ifndef HAVE_GETOPT_LONG
 233 extern char *optarg;
 234 extern int optind;
 235 extern int opterr;
 236 extern int optopt;
 237 struct option;
 238
 239 #ifndef HAVE_STRUCT_OPTION_NAME
 240 struct option
 241 {
 242     const char *name;
 243     int has_arg;
 244     int *flag;
 245     int val;
 246 };
 247 #endif
 248
 249 extern int getopt_long (int ___argc, char *const *___argv,
 250                         const char *__shortopts,
 251                         const struct option *__longopts, int *__longind);
 252 extern int getopt_long_only (int ___argc, char *const *___argv,
 253                              const char *__shortopts,
 254                              const struct option *__longopts, int *__longind);
 255 #endif  /* HAVE_GETOPT_LONG */
 256
 257 #ifndef HAVE_FFS
 258 int ffs( int x );
 259 #endif
 260
 261 #ifndef HAVE_ISINF
 262 int isinf(double x);
 263 #endif
 264
 265 #ifndef HAVE_ISNAN
 266 int isnan(double x);
 267 #endif
 268
 269 #ifndef HAVE_LSTAT
 270 int lstat(const char *file_name, struct stat *buf);
 271 #endif /* HAVE_LSTAT */
 272
 273 #ifndef HAVE_MEMMOVE
 274 void *memmove(void *dest, const void *src, size_t len);
 275 #endif /* !defined(HAVE_MEMMOVE) */
 276
 277 #ifndef HAVE_POLL
 278 struct pollfd
 279 {
 280     int fd;
 281     short events;
 282     short revents;
 283 };
 284 #define POLLIN   0x01
 285 #define POLLPRI  0x02
 286 #define POLLOUT  0x04
 287 #define POLLERR  0x08
 288 #define POLLHUP  0x10
 289 #define POLLNVAL 0x20
 290 int poll( struct pollfd *fds, unsigned int count, int timeout );
 291 #endif /* HAVE_POLL */
 292
 293 #ifndef HAVE_PREAD
 294 ssize_t pread( int fd, void *buf, size_t count, off_t offset );
 295 #endif /* HAVE_PREAD */
 296
 297 #ifndef HAVE_PWRITE
 298 ssize_t pwrite( int fd, const void *buf, size_t count, off_t offset );
 299 #endif /* HAVE_PWRITE */
 300
 301 #ifndef HAVE_READLINK
 302 int readlink( const char *path, char *buf, size_t size );
 303 #endif /* HAVE_READLINK */
 304
 305 #ifndef HAVE_STATVFS
 306 int statvfs( const char *path, struct statvfs *buf );
 307 #endif
 308
 309 #ifndef HAVE_STRNCASECMP
 310 # ifndef HAVE__STRNICMP
 311 int strncasecmp(const char *str1, const char *str2, size_t n);
 312 # else
 313 # define strncasecmp _strnicmp
 314 # endif
 315 #endif /* !defined(HAVE_STRNCASECMP) */
 316
 317 #ifndef HAVE_STRERROR
 318 const char *strerror(int err);
 319 #endif /* !defined(HAVE_STRERROR) */
 320
 321 #ifndef HAVE_STRCASECMP
 322 # ifndef HAVE__STRICMP
 323 int strcasecmp(const char *str1, const char *str2);
 324 # else
 325 # define strcasecmp _stricmp
 326 # endif
 327 #endif /* !defined(HAVE_STRCASECMP) */
 328
 329 #ifndef HAVE_SYMLINK
 330 int symlink(const char *from, const char *to);
 331 #endif
 332
 333 #ifndef HAVE_USLEEP
 334 int usleep (unsigned int useconds);
 335 #endif /* !defined(HAVE_USLEEP) */
 336
 337 #ifdef __i386__
 338 static inline void *memcpy_unaligned( void *dst, const void *src, size_t size )
 339 {
 340     return memcpy( dst, src, size );
 341 }
 342 #else
 343 extern void *memcpy_unaligned( void *dst, const void *src, size_t size );
 344 #endif /* __i386__ */
 345
 346 extern int mkstemps(char *template, int suffix_len);
 347
 348 /* Process creation flags */
 349 #ifndef _P_WAIT
 350 # define _P_WAIT    0
 351 # define _P_NOWAIT  1
 352 # define _P_OVERLAY 2
 353 # define _P_NOWAITO 3
 354 # define _P_DETACH  4
 355 #endif
 356 #ifndef HAVE__SPAWNVP
 357 extern int _spawnvp(int mode, const char *cmdname, const char * const argv[]);
 358 #endif
 359
 360 /* Interlocked functions */
 361
 362 #if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
 363
 364 extern __int64 interlocked_cmpxchg64( __int64 *dest, __int64 xchg, __int64 compare );
 365
 366 static inline int interlocked_cmpxchg( int *dest, int xchg, int compare )
 367 {
 368     int ret;
 369     __asm__ __volatile__( "lock; cmpxchgl %2,(%1)"
 370                           : "=a" (ret) : "r" (dest), "r" (xchg), "0" (compare) : "memory" );
 371     return ret;
 372 }
 373
 374 static inline void *interlocked_cmpxchg_ptr( void **dest, void *xchg, void *compare )
 375 {
 376     void *ret;
 377 #ifdef __x86_64__
 378     __asm__ __volatile__( "lock; cmpxchgq %2,(%1)"
 379                           : "=a" (ret) : "r" (dest), "r" (xchg), "0" (compare) : "memory" );
 380 #else
 381     __asm__ __volatile__( "lock; cmpxchgl %2,(%1)"
 382                           : "=a" (ret) : "r" (dest), "r" (xchg), "0" (compare) : "memory" );
 383 #endif
 384     return ret;
 385 }
 386
 387 static inline int interlocked_xchg( int *dest, int val )
 388 {
 389     int ret;
 390     __asm__ __volatile__( "lock; xchgl %0,(%1)"
 391                           : "=r" (ret) : "r" (dest), "0" (val) : "memory" );
 392     return ret;
 393 }
 394
 395 static inline void *interlocked_xchg_ptr( void **dest, void *val )
 396 {
 397     void *ret;
 398 #ifdef __x86_64__
 399     __asm__ __volatile__( "lock; xchgq %0,(%1)"
 400                           : "=r" (ret) :"r" (dest), "0" (val) : "memory" );
 401 #else
 402     __asm__ __volatile__( "lock; xchgl %0,(%1)"
 403                           : "=r" (ret) : "r" (dest), "0" (val) : "memory" );
 404 #endif
 405     return ret;
 406 }
 407
 408 static inline int interlocked_xchg_add( int *dest, int incr )
 409 {
 410     int ret;
 411     __asm__ __volatile__( "lock; xaddl %0,(%1)"
 412                           : "=r" (ret) : "r" (dest), "0" (incr) : "memory" );
 413     return ret;
 414 }
 415
 416 #ifdef __x86_64__
 417 static inline unsigned char interlocked_cmpxchg128( __int64 *dest, __int64 xchg_high,
 418                                                     __int64 xchg_low, __int64 *compare )
 419 {
 420     unsigned char ret;
 421     __asm__ __volatile__( "lock cmpxchg16b %0; setz %b2"
 422                           : "=m" (dest[0]), "=m" (dest[1]), "=r" (ret),
 423                             "=a" (compare[0]), "=d" (compare[1])
 424                           : "m" (dest[0]), "m" (dest[1]), "3" (compare[0]), "4" (compare[1]),
 425                             "c" (xchg_high), "b" (xchg_low) );
 426     return ret;
 427 }
 428 #endif
 429
 430 #else  /* __GNUC__ */
 431
 432 extern int interlocked_cmpxchg( int *dest, int xchg, int compare );
 433 extern void *interlocked_cmpxchg_ptr( void **dest, void *xchg, void *compare );
 434 extern __int64 interlocked_cmpxchg64( __int64 *dest, __int64 xchg, __int64 compare );
 435 extern int interlocked_xchg( int *dest, int val );
 436 extern void *interlocked_xchg_ptr( void **dest, void *val );
 437 extern int interlocked_xchg_add( int *dest, int incr );
 438 #if defined(__x86_64__) || defined(__aarch64__) || defined(_WIN64)
 439 extern unsigned char interlocked_cmpxchg128( __int64 *dest, __int64 xchg_high,
 440                                              __int64 xchg_low, __int64 *compare );
 441 #endif
 442
 443 #endif  /* __GNUC__ */
 444
 445 #else /* NO_LIBWINE_PORT */
 446
 447 #define __WINE_NOT_PORTABLE(func) func##_is_not_portable func##_is_not_portable
 448
 449 #define ffs                     __WINE_NOT_PORTABLE(ffs)
 450 #define fstatvfs                __WINE_NOT_PORTABLE(fstatvfs)
 451 #define getopt_long             __WINE_NOT_PORTABLE(getopt_long)
 452 #define getopt_long_only        __WINE_NOT_PORTABLE(getopt_long_only)
 453 #define interlocked_cmpxchg     __WINE_NOT_PORTABLE(interlocked_cmpxchg)
 454 #define interlocked_cmpxchg_ptr __WINE_NOT_PORTABLE(interlocked_cmpxchg_ptr)
 455 #define interlocked_xchg        __WINE_NOT_PORTABLE(interlocked_xchg)
 456 #define interlocked_xchg_ptr    __WINE_NOT_PORTABLE(interlocked_xchg_ptr)
 457 #define interlocked_xchg_add    __WINE_NOT_PORTABLE(interlocked_xchg_add)
 458 #define lstat                   __WINE_NOT_PORTABLE(lstat)
 459 #define memcpy_unaligned        __WINE_NOT_PORTABLE(memcpy_unaligned)
 460 #undef memmove
 461 #define memmove                 __WINE_NOT_PORTABLE(memmove)
 462 #define pread                   __WINE_NOT_PORTABLE(pread)
 463 #define pwrite                  __WINE_NOT_PORTABLE(pwrite)
 464 #define spawnvp                 __WINE_NOT_PORTABLE(spawnvp)
 465 #define statvfs                 __WINE_NOT_PORTABLE(statvfs)
 466 #define strcasecmp              __WINE_NOT_PORTABLE(strcasecmp)
 467 #define strerror                __WINE_NOT_PORTABLE(strerror)
 468 #define strncasecmp             __WINE_NOT_PORTABLE(strncasecmp)
 469 #define usleep                  __WINE_NOT_PORTABLE(usleep)
 470
 471 #endif /* NO_LIBWINE_PORT */
 472
 473 #endif /* !defined(__WINE_WINE_PORT_H) */