reactos/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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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 #define _GNU_SOURCE  /* for pread/pwrite */
  29 #include <fcntl.h>
  30 #include <math.h>
  31 #include <sys/types.h>
  32 #include <sys/stat.h>
  33 #ifdef HAVE_DIRECT_H
  34 # include <direct.h>
  35 #endif
  36 #ifdef HAVE_IO_H
  37 # include <io.h>
  38 #endif
  39 #ifdef HAVE_PROCESS_H
  40 # include <process.h>
  41 #endif
  42 #include <string.h>
  43 #ifdef HAVE_UNISTD_H
  44 # include <unistd.h>
  45 #endif
  46
  47
  48 /****************************************************************
  49  * Type definitions
  50  */
  51
  52 #ifndef HAVE_MODE_T
  53 typedef int mode_t;
  54 #endif
  55 #ifndef HAVE_OFF_T
  56 typedef long off_t;
  57 #endif
  58 #ifndef HAVE_PID_T
  59 typedef int pid_t;
  60 #endif
  61 #ifndef HAVE_SIZE_T
  62 typedef unsigned int size_t;
  63 #endif
  64 #ifndef HAVE_SSIZE_T
  65 typedef int ssize_t;
  66 #endif
  67 //#ifndef HAVE_SOCKLEN_T
  68 //typedef unsigned int socklen_t;
  69 //#endif
  70
  71 #ifndef HAVE_STATFS
  72 # ifdef __BEOS__
  73 #  define HAVE_STRUCT_STATFS_F_BFREE
  74 struct statfs {
  75   long   f_bsize;  /* block_size */
  76   long   f_blocks; /* total_blocks */
  77   long   f_bfree;  /* free_blocks */
  78 };
  79 # else /* defined(__BEOS__) */
  80 struct statfs;
  81 # endif /* defined(__BEOS__) */
  82 #endif /* !defined(HAVE_STATFS) */
  83
  84
  85 /****************************************************************
  86  * Macro definitions
  87  */
  88
  89 #ifdef HAVE_DLFCN_H
  90 #include <dlfcn.h>
  91 #else
  92 #define RTLD_LAZY    0x001
  93 #define RTLD_NOW     0x002
  94 #define RTLD_GLOBAL  0x100
  95 #endif
  96
  97 #if !defined(HAVE_FTRUNCATE) && defined(HAVE_CHSIZE)
  98 #define ftruncate chsize
  99 #endif
 100
 101 #if !defined(HAVE_POPEN) && defined(HAVE__POPEN)
 102 #define popen _popen
 103 #endif
 104
 105 #if !defined(HAVE_PCLOSE) && defined(HAVE__PCLOSE)
 106 #define pclose _pclose
 107 #endif
 108
 109 #if !defined(HAVE_SNPRINTF) && defined(HAVE__SNPRINTF)
 110 #define snprintf _snprintf
 111 #endif
 112
 113 #if !defined(HAVE_VSNPRINTF) && defined(HAVE__VSNPRINTF)
 114 #define vsnprintf _vsnprintf
 115 #endif
 116
 117 #ifndef S_ISLNK
 118 # define S_ISLNK(mod) (0)
 119 #endif /* S_ISLNK */
 120
 121 /* So we open files in 64 bit access mode on Linux */
 122 #ifndef O_LARGEFILE
 123 # define O_LARGEFILE 0
 124 #endif
 125
 126
 127 /****************************************************************
 128  * Constants
 129  */
 130
 131 #ifndef M_PI
 132 #define M_PI 3.14159265358979323846
 133 #endif
 134
 135 #ifndef M_PI_2
 136 #define M_PI_2 1.570796326794896619
 137 #endif
 138
 139
 140 /* Macros to define assembler functions somewhat portably */
 141
 142 #ifdef __GNUC__
 143 # define __ASM_GLOBAL_FUNC(name,code) \
 144       __asm__( ".align 4\n\t" \
 145                ".globl " __ASM_NAME(#name) "\n\t" \
 146                __ASM_FUNC(#name) "\n" \
 147                __ASM_NAME(#name) ":\n\t" \
 148                code );
 149 #else  /* __GNUC__ */
 150 # define __ASM_GLOBAL_FUNC(name,code) \
 151       void __asm_dummy_##name(void) { \
 152           asm( ".align 4\n\t" \
 153                ".globl " __ASM_NAME(#name) "\n\t" \
 154                __ASM_FUNC(#name) "\n" \
 155                __ASM_NAME(#name) ":\n\t" \
 156                code ); \
 157       }
 158 #endif  /* __GNUC__ */
 159
 160
 161 /* Constructor functions */
 162
 163 #ifdef __GNUC__
 164 # define DECL_GLOBAL_CONSTRUCTOR(func) \
 165     static void func(void) __attribute__((constructor)); \
 166     static void func(void)
 167 #elif defined(__i386__)
 168 # define DECL_GLOBAL_CONSTRUCTOR(func) \
 169     static void __dummy_init_##func(void) { \
 170         asm(".section .init,\"ax\"\n\t" \
 171             "call " #func "\n\t" \
 172             ".previous"); } \
 173     static void func(void)
 174 #elif defined(__sparc__)
 175 # define DECL_GLOBAL_CONSTRUCTOR(func) \
 176     static void __dummy_init_##func(void) { \
 177         asm("\t.section \".init\",#alloc,#execinstr\n" \
 178             "\tcall " #func "\n" \
 179             "\tnop\n" \
 180             "\t.section \".text\",#alloc,#execinstr\n" ); } \
 181     static void func(void)
 182 #else
 183 # error You must define the DECL_GLOBAL_CONSTRUCTOR macro for your platform
 184 #endif
 185
 186
 187 /* Register functions */
 188
 189 #ifdef __i386__
 190 #define DEFINE_REGS_ENTRYPOINT( name, fn, args, pop_args ) \
 191     __ASM_GLOBAL_FUNC( name, \
 192                        "call " __ASM_NAME("__wine_call_from_32_regs") "\n\t" \
 193                        ".long " __ASM_NAME(#fn) "\n\t" \
 194                        ".byte " #args "," #pop_args )
 195 /* FIXME: add support for other CPUs */
 196 #endif  /* __i386__ */
 197
 198
 199 /****************************************************************
 200  * Function definitions (only when using libwine_port)
 201  */
 202
 203 #ifndef NO_LIBWINE_PORT
 204
 205 #ifndef HAVE_GETOPT_LONG
 206 extern char *optarg;
 207 extern int optind;
 208 extern int opterr;
 209 extern int optopt;
 210 struct option;
 211
 212 #ifndef HAVE_STRUCT_OPTION_NAME
 213 struct option
 214 {
 215     const char *name;
 216     int has_arg;
 217     int *flag;
 218     int val;
 219 };
 220 #endif
 221
 222 extern int getopt_long (int ___argc, char *const *___argv,
 223                         const char *__shortopts,
 224                         const struct option *__longopts, int *__longind);
 225 extern int getopt_long_only (int ___argc, char *const *___argv,
 226                              const char *__shortopts,
 227                              const struct option *__longopts, int *__longind);
 228 #endif  /* HAVE_GETOPT_LONG */
 229
 230 #ifndef HAVE_GETPAGESIZE
 231 size_t getpagesize(void);
 232 #endif  /* HAVE_GETPAGESIZE */
 233
 234 #ifndef HAVE_GETTID
 235 pid_t gettid(void);
 236 #endif /* HAVE_GETTID */
 237
 238 #ifndef HAVE_LSTAT
 239 int lstat(const char *file_name, struct stat *buf);
 240 #endif /* HAVE_LSTAT */
 241
 242 #ifndef HAVE_MEMMOVE
 243 void *memmove(void *dest, const void *src, size_t len);
 244 #endif /* !defined(HAVE_MEMMOVE) */
 245
 246 #ifndef __REACTOS__
 247 #ifndef HAVE_PREAD
 248 ssize_t pread( int fd, void *buf, size_t count, off_t offset );
 249 #endif /* HAVE_PREAD */
 250
 251 #ifndef HAVE_PWRITE
 252 ssize_t pwrite( int fd, const void *buf, size_t count, off_t offset );
 253 #endif /* HAVE_PWRITE */
 254 #endif /* __REACTOS__ */
 255
 256 #ifdef WIN32
 257 #ifndef HAVE_SIGSETJMP
 258 # include <setjmp.h>
 259 typedef jmp_buf sigjmp_buf;
 260 int sigsetjmp( sigjmp_buf buf, int savesigs );
 261 void siglongjmp( sigjmp_buf buf, int val );
 262 #endif /* HAVE_SIGSETJMP */
 263 #endif
 264
 265 #ifndef HAVE_STATFS
 266 int statfs(const char *name, struct statfs *info);
 267 #endif /* !defined(HAVE_STATFS) */
 268
 269 #ifndef HAVE_STRNCASECMP
 270 # ifndef HAVE__STRNICMP
 271 int strncasecmp(const char *str1, const char *str2, size_t n);
 272 # else
 273 # define strncasecmp _strnicmp
 274 # endif
 275 #endif /* !defined(HAVE_STRNCASECMP) */
 276
 277 #ifndef HAVE_STRERROR
 278 const char *strerror(int err);
 279 #endif /* !defined(HAVE_STRERROR) */
 280
 281 #ifndef HAVE_STRCASECMP
 282 # ifndef HAVE__STRICMP
 283 int strcasecmp(const char *str1, const char *str2);
 284 # else
 285 # define strcasecmp _stricmp
 286 # endif
 287 #endif /* !defined(HAVE_STRCASECMP) */
 288
 289 #ifndef HAVE_USLEEP
 290 int usleep (unsigned int useconds);
 291 #endif /* !defined(HAVE_USLEEP) */
 292
 293 #ifdef __i386__
 294 static inline void *memcpy_unaligned( void *dst, const void *src, size_t size )
 295 {
 296     return memcpy( dst, src, size );
 297 }
 298 #else
 299 extern void *memcpy_unaligned( void *dst, const void *src, size_t size );
 300 #endif /* __i386__ */
 301
 302 extern int mkstemps(char *template, int suffix_len);
 303
 304 /* Process creation flags */
 305 #ifndef _P_WAIT
 306 # define _P_WAIT    0
 307 # define _P_NOWAIT  1
 308 # define _P_OVERLAY 2
 309 # define _P_NOWAITO 3
 310 # define _P_DETACH  4
 311 #endif
 312 #ifndef HAVE_SPAWNVP
 313 extern int spawnvp(int mode, const char *cmdname, const char * const argv[]);
 314 #endif
 315
 316 /* Interlocked functions */
 317
 318 #if defined(__i386__) && defined(__GNUC__)
 319
 320 extern inline long interlocked_cmpxchg( long *dest, long xchg, long compare )
 321 {
 322     long ret;
 323     __asm__ __volatile__( "lock; cmpxchgl %2,(%1)"
 324                           : "=a" (ret) : "r" (dest), "r" (xchg), "0" (compare) : "memory" );
 325     return ret;
 326 }
 327
 328 extern inline void *interlocked_cmpxchg_ptr( void **dest, void *xchg, void *compare )
 329 {
 330     void *ret;
 331     __asm__ __volatile__( "lock; cmpxchgl %2,(%1)"
 332                           : "=a" (ret) : "r" (dest), "r" (xchg), "0" (compare) : "memory" );
 333     return ret;
 334 }
 335
 336 extern inline long interlocked_xchg( long *dest, long val )
 337 {
 338     long ret;
 339     __asm__ __volatile__( "lock; xchgl %0,(%1)"
 340                           : "=r" (ret) : "r" (dest), "0" (val) : "memory" );
 341     return ret;
 342 }
 343
 344 extern inline void *interlocked_xchg_ptr( void **dest, void *val )
 345 {
 346     void *ret;
 347     __asm__ __volatile__( "lock; xchgl %0,(%1)"
 348                           : "=r" (ret) : "r" (dest), "0" (val) : "memory" );
 349     return ret;
 350 }
 351
 352 extern inline long interlocked_xchg_add( long *dest, long incr )
 353 {
 354     long ret;
 355     __asm__ __volatile__( "lock; xaddl %0,(%1)"
 356                           : "=r" (ret) : "r" (dest), "0" (incr) : "memory" );
 357     return ret;
 358 }
 359
 360 #else  /* __i386___ && __GNUC__ */
 361
 362 extern long interlocked_cmpxchg( long *dest, long xchg, long compare );
 363 extern void *interlocked_cmpxchg_ptr( void **dest, void *xchg, void *compare );
 364 extern long interlocked_xchg( long *dest, long val );
 365 extern void *interlocked_xchg_ptr( void **dest, void *val );
 366 extern long interlocked_xchg_add( long *dest, long incr );
 367
 368 #endif  /* __i386___ && __GNUC__ */
 369
 370 #else /* NO_LIBWINE_PORT */
 371
 372 #define __WINE_NOT_PORTABLE(func) func##_is_not_portable func##_is_not_portable
 373
 374 #define getopt_long             __WINE_NOT_PORTABLE(getopt_long)
 375 #define getopt_long_only        __WINE_NOT_PORTABLE(getopt_long_only)
 376 #define getpagesize             __WINE_NOT_PORTABLE(getpagesize)
 377 #define interlocked_cmpxchg     __WINE_NOT_PORTABLE(interlocked_cmpxchg)
 378 #define interlocked_cmpxchg_ptr __WINE_NOT_PORTABLE(interlocked_cmpxchg_ptr)
 379 #define interlocked_xchg        __WINE_NOT_PORTABLE(interlocked_xchg)
 380 #define interlocked_xchg_ptr    __WINE_NOT_PORTABLE(interlocked_xchg_ptr)
 381 #define interlocked_xchg_add    __WINE_NOT_PORTABLE(interlocked_xchg_add)
 382 #define lstat                   __WINE_NOT_PORTABLE(lstat)
 383 #define memcpy_unaligned        __WINE_NOT_PORTABLE(memcpy_unaligned)
 384 #define memmove                 __WINE_NOT_PORTABLE(memmove)
 385 #define pread                   __WINE_NOT_PORTABLE(pread)
 386 #define pwrite                  __WINE_NOT_PORTABLE(pwrite)
 387 #define spawnvp                 __WINE_NOT_PORTABLE(spawnvp)
 388 #define statfs                  __WINE_NOT_PORTABLE(statfs)
 389 #define strcasecmp              __WINE_NOT_PORTABLE(strcasecmp)
 390 #define strerror                __WINE_NOT_PORTABLE(strerror)
 391 #define strncasecmp             __WINE_NOT_PORTABLE(strncasecmp)
 392 #define usleep                  __WINE_NOT_PORTABLE(usleep)
 393
 394 #endif /* NO_LIBWINE_PORT */
 395
 396 #endif /* !defined(__WINE_WINE_PORT_H) */