do_memset.c

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    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     (size of datastructure)         
    8  */
    9 
   10 #include "../system.h"
   11 
   12 #if USE_MEMSET
   13 
   14 /*===========================================================================*
   15  *                              do_memset                                    *
   16  *===========================================================================*/
   17 PUBLIC int do_memset(m_ptr)
   18 register message *m_ptr;
   19 {
   20 /* Handle sys_memset(). This writes a pattern into the specified memory. */
   21   unsigned long p;
   22   unsigned char c = m_ptr->MEM_PATTERN;
   23   p = c | (c << 8) | (c << 16) | (c << 24);
   24   phys_memset((phys_bytes) m_ptr->MEM_PTR, p, (phys_bytes) m_ptr->MEM_COUNT);
   25   return(OK);
   26 }
   27 
   28 #endif /* USE_MEMSET */
   29

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FreeBSD/Linux Kernel Cross Reference sys/kernel/system/do_memset.c

FreeBSD/Linux Kernel Cross Reference
sys/kernel/system/do_memset.c