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C/C++ Source or Header  |  2008-12-24  |  409 b   |  23 lines
  1. #ifndef _ASM_X86_SYSTEM_64_H
  2. #define _ASM_X86_SYSTEM_64_H
  3.  
  4. #include <asm/segment.h>
  5. #include <asm/cmpxchg.h>
  6.  
  7.  
  8. static inline unsigned long read_cr8(void)
  9. {
  10.     unsigned long cr8;
  11.     asm volatile("movq %%cr8,%0" : "=r" (cr8));
  12.     return cr8;
  13. }
  14.  
  15. static inline void write_cr8(unsigned long val)
  16. {
  17.     asm volatile("movq %0,%%cr8" :: "r" (val) : "memory");
  18. }
  19.  
  20. #include <linux/irqflags.h>
  21.  
  22. #endif /* _ASM_X86_SYSTEM_64_H */
  23.