include/selectors.h

   1 /*
   2  * Selector definitions
   3  *
   4  * Copyright 1995 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_SELECTORS_H
  22 #define __WINE_SELECTORS_H
  23
  24 #include "windef.h"
  25 #include "wine/library.h"
  26
  27 extern WORD SELECTOR_AllocBlock( const void *base, DWORD size, unsigned char flags );
  28 extern WORD SELECTOR_ReallocBlock( WORD sel, const void *base, DWORD size );
  29 extern void SELECTOR_FreeBlock( WORD sel );
  30
  31 extern UINT W32S_offset;
  32
  33 #define W32S_APP2WINE(addr) ((addr)? (DWORD)(addr) + W32S_offset : 0)
  34 #define W32S_WINE2APP(addr) ((addr)? (DWORD)(addr) - W32S_offset : 0)
  35
  36 #define FIRST_LDT_ENTRY_TO_ALLOC  17
  37
  38 #define IS_SELECTOR_FREE(sel) (!(wine_ldt_copy.flags[LOWORD(sel) >> 3] & WINE_LDT_FLAGS_ALLOCATED))
  39
  40 /* Determine if sel is a system selector (i.e. not managed by Wine) */
  41 #define IS_SELECTOR_SYSTEM(sel) \
  42    (!((sel) & 4) || ((LOWORD(sel) >> 3) < FIRST_LDT_ENTRY_TO_ALLOC))
  43 #define IS_SELECTOR_32BIT(sel) \
  44    (IS_SELECTOR_SYSTEM(sel) || (wine_ldt_copy.flags[LOWORD(sel) >> 3] & WINE_LDT_FLAGS_32BIT))
  45
  46 #endif /* __WINE_SELECTORS_H */