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