kernel/system/do_memset.c

   1 /* The kernel call implemented in this file:
   2  *   m_type:    SYS_MEMSET
   3  *
   4  * The parameters for this kernel call are:
   5  *    m2_p1:    MEM_PTR         (virtual address)
   6  *    m2_l1:    MEM_COUNT       (returns physical address)
   7  *    m2_l2:    MEM_PATTERN     (pattern byte to be written)
   8  */
   9
  10 #include "kernel/system.h"
  11
  12 #if USE_MEMSET
  13
  14 /*===========================================================================*
  15  *                              do_memset                                    *
  16  *===========================================================================*/
  17 PUBLIC int do_memset(struct proc * caller, message * m_ptr)
  18 {
  19 /* Handle sys_memset(). This writes a pattern into the specified memory. */
  20   unsigned char c = m_ptr->MEM_PATTERN;
  21   vm_phys_memset((phys_bytes) m_ptr->MEM_PTR, c, (phys_bytes) m_ptr->MEM_COUNT);
  22   return(OK);
  23 }
  24
  25 #endif /* USE_MEMSET */
  26