include/selectors.h

   1 /*
   2  * Selector definitions
   3  *
   4  * Copyright 1995 Alexandre Julliard
   5  */
   6
   7 #ifndef __WINE_SELECTORS_H
   8 #define __WINE_SELECTORS_H
   9
  10 #include "windef.h"
  11 #include "ldt.h"
  12
  13 extern WORD SELECTOR_AllocBlock( const void *base, DWORD size, unsigned char flags );
  14 extern WORD SELECTOR_ReallocBlock( WORD sel, const void *base, DWORD size );
  15 extern void SELECTOR_FreeBlock( WORD sel );
  16
  17 #ifdef __i386__
  18 # ifdef __GNUC__
  19 #  define __DEFINE_GET_SEG(seg) \
  20     extern inline unsigned short __get_##seg(void) \
  21     { unsigned short res; __asm__("movw %%" #seg ",%w0" : "=r"(res)); return res; }
  22 #  define __DEFINE_SET_SEG(seg) \
  23     extern inline void __set_##seg(int val) { __asm__("movw %w0,%%" #seg : : "r" (val)); }
  24 # else  /* __GNUC__ */
  25 #  define __DEFINE_GET_SEG(seg) extern unsigned short __get_##seg(void);
  26 #  define __DEFINE_SET_SEG(seg) extern void __set_##seg(unsigned int);
  27 # endif /* __GNUC__ */
  28 #else  /* __i386__ */
  29 # define __DEFINE_GET_SEG(seg) static inline unsigned short __get_##seg(void) { return 0; }
  30 # define __DEFINE_SET_SEG(seg) /* nothing */
  31 #endif  /* __i386__ */
  32
  33 __DEFINE_GET_SEG(cs)
  34 __DEFINE_GET_SEG(ds)
  35 __DEFINE_GET_SEG(es)
  36 __DEFINE_GET_SEG(fs)
  37 __DEFINE_GET_SEG(gs)
  38 __DEFINE_GET_SEG(ss)
  39 __DEFINE_SET_SEG(fs)
  40 __DEFINE_SET_SEG(gs)
  41
  42 #endif /* __WINE_SELECTORS_H */