lib/syslib/sys_segctl.c

   1 #include "syslib.h"
   2
   3 /*===========================================================================*
   4  *                               sys_segctl                                  *
   5  *===========================================================================*/
   6 PUBLIC int sys_segctl(index, seg, off, phys, size)
   7 int *index;                             /* return index of remote segment */
   8 u16_t *seg;                             /* return segment selector here */
   9 vir_bytes *off;                         /* return offset in segment here */
  10 phys_bytes phys;                        /* physical address to convert */
  11 vir_bytes size;                         /* size of segment */
  12 {
  13     message m;
  14     int s;
  15     m.SEG_PHYS = phys;
  16     m.SEG_SIZE = size;
  17     s = _taskcall(SYSTASK, SYS_SEGCTL, &m);
  18     *index = (int) m.SEG_INDEX;
  19     *seg = (u16_t) m.SEG_SELECT;
  20     *off = (vir_bytes) m.SEG_OFFSET;
  21     return s;
  22 }
  23
  24