src/userprog/exception.h

   1 #ifndef USERPROG_EXCEPTION_H
   2 #define USERPROG_EXCEPTION_H
   3
   4 /* Page fault error code bits that describe the cause of the exception.  */
   5 #define PF_P 0x1    /* 0: not-present page. 1: access rights violation. */
   6 #define PF_W 0x2    /* 0: read, 1: write. */
   7 #define PF_U 0x4    /* 0: kernel, 1: user process. */
   8
   9 void exception_init (void);
  10 void exception_print_stats (void);
  11
  12 #endif /* userprog/exception.h */