lib/libcaps/i386/md_globaldata.h

   1 /*
   2  * MD_GLOBALDATA.H
   3  *
   4  * $DragonFly: src/lib/libcaps/i386/md_globaldata.h,v 1.3 2007/04/13 12:12:27 corecode Exp $
   5  */
   6
   7 #ifndef _MD_GLOBALDATA_H_
   8 #define _MD_GLOBALDATA_H_
   9
  10 extern int __mycpu__dummy;
  11
  12 static __inline
  13 globaldata_t
  14 _get_mycpu(void)
  15 {
  16     globaldata_t gd;
  17
  18     __asm ("movl %%gs:0,%0" : "=r" (gd) : "m"(__mycpu__dummy));
  19     return(gd);
  20 }
  21
  22 static __inline
  23 void
  24 _set_mycpu(int selector)
  25 {
  26     __asm __volatile("mov %0,%%gs" :: "g"(selector));
  27 }
  28
  29 #define mycpu   _get_mycpu()
  30
  31 void md_gdinit1(globaldata_t gd);
  32 void md_gdinit2(globaldata_t gd);
  33 void cpu_user_switch(void);
  34 void cpu_rfork_start(void) __dead2;
  35
  36 #endif
  37