minix/kernel/const.h

   1 /* General macros and constants used by the kernel. */
   2 #ifndef CONST_H
   3 #define CONST_H
   4
   5 #include <minix/config.h>
   6 #include <minix/bitmap.h>
   7
   8 #include "config.h"
   9 #include "debug.h"
  10
  11 /* Translate an endpoint number to a process number, return success. */
  12 #ifndef isokendpt
  13 #define isokendpt(e,p) isokendpt_d((e),(p),0)
  14 #define okendpt(e,p)   isokendpt_d((e),(p),1)
  15 #endif
  16
  17 /* Constants used in virtual_copy(). Values must be 0 and 1, respectively. */
  18 #define _SRC_   0
  19 #define _DST_   1
  20
  21 #define get_sys_bit(map,bit) \
  22         ( MAP_CHUNK((map).chunk,bit) & (1 << CHUNK_OFFSET(bit) ))
  23 #define get_sys_bits(map,bit) \
  24         ( MAP_CHUNK((map).chunk,bit) )
  25 #define set_sys_bit(map,bit) \
  26         ( MAP_CHUNK((map).chunk,bit) |= (1 << CHUNK_OFFSET(bit) ))
  27 #define unset_sys_bit(map,bit) \
  28         ( MAP_CHUNK((map).chunk,bit) &= ~(1 << CHUNK_OFFSET(bit) ))
  29
  30 /* for kputc() */
  31 #define END_OF_KMESS    0
  32
  33 #endif /* CONST_H */