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,
  14                                  enum seg_type type, BOOL is32bit,
  15                                  BOOL readonly );
  16 extern WORD SELECTOR_ReallocBlock( WORD sel, const void *base, DWORD size );
  17 extern void SELECTOR_MoveBlock( WORD sel, const void *new_base );
  18 extern void SELECTOR_FreeBlock( WORD sel, WORD count );
  19
  20 #ifdef __i386__
  21 # ifdef __GNUC__
  22 #  define __DEFINE_GET_SEG(seg) \
  23     extern inline unsigned short __get_##seg(void) \
  24     { unsigned short res; __asm__("movw %%" #seg ",%w0" : "=r"(res)); return res; }
  25 #  define __DEFINE_SET_SEG(seg) \
  26     extern inline void __set_##seg(int val) { __asm__("movw %w0,%%" #seg : : "r" (val)); }
  27 # else  /* __GNUC__ */
  28 #  define __DEFINE_GET_SEG(seg) extern unsigned short __get_##seg(void);
  29 #  define __DEFINE_SET_SEG(seg) extern void __set_##seg(unsigned int);
  30 # endif /* __GNUC__ */
  31 #else  /* __i386__ */
  32 # define __DEFINE_GET_SEG(seg) static inline unsigned short __get_##seg(void) { return 0; }
  33 # define __DEFINE_SET_SEG(seg) /* nothing */
  34 #endif  /* __i386__ */
  35
  36 __DEFINE_GET_SEG(cs)
  37 __DEFINE_GET_SEG(ds)
  38 __DEFINE_GET_SEG(es)
  39 __DEFINE_GET_SEG(fs)
  40 __DEFINE_GET_SEG(gs)
  41 __DEFINE_GET_SEG(ss)
  42 __DEFINE_SET_SEG(fs)
  43 __DEFINE_SET_SEG(gs)
  44
  45 #endif /* __WINE_SELECTORS_H */