minix/lib/syslib/sys_physcp.c
2005-04-21 14:53:53 +00:00

18 lines
615 B
C

#include "syslib.h"
PUBLIC int sys_physcopy(src_phys, dst_phys, bytes)
phys_bytes src_phys; /* source physical address */
phys_bytes dst_phys; /* destination physical address */
phys_bytes bytes; /* how many bytes */
{
/* Transfer a block of data. This uses absolute memory addresses only. Use
* sys_umap to convert a virtual address into a physical address if needed.
*/
message copy_mess;
if (bytes == 0L) return(OK);
copy_mess.CP_SRC_ADDR = (long) src_phys;
copy_mess.CP_DST_ADDR = (long) dst_phys;
copy_mess.CP_NR_BYTES = (long) bytes;
return(_taskcall(SYSTASK, SYS_PHYSCOPY, &copy_mess));
}