c/src/lib/libbsp/shmdr/cnvpkt.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42

/*  void Shm_Convert_packet( &packet )
 *
 *  This routine is the shared memory locked queue MPCI driver routine
 *  used to convert the RTEMS's information in a packet from non-native
 *  format to processor native format.
 *
 *  Input parameters:
 *    packet  - pointer to a packet
 *
 *  Output parameters:
 *    *packet - packet in native format
 *
 *  NOTE: Message buffers are not manipulated.
 *        Endian conversion is currently the only conversion.
 *
 *  COPYRIGHT (c) 1989-1997.
 *  On-Line Applications Research Corporation (OAR).
 *  Copyright assigned to U.S. Government, 1994.
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.OARcorp.com/rtems/license.html.
 *
 *  $Id$
 */

#include <rtems.h>
#include "shm.h"

void Shm_Convert_packet(
  rtems_packet_prefix *packet
)
{
  rtems_unsigned32 *pkt, i;

  pkt = (rtems_unsigned32 *) packet;
  for ( i=RTEMS_MINIMUN_HETERO_CONVERSION ; i ; i--, pkt++ )
    *pkt = CPU_swap_u32( *pkt );

  for ( i=packet->to_convert ; i ; i--, pkt++ )
    *pkt = CPU_swap_u32( *pkt );
}