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Diffstat (limited to 'c/src/lib/libbsp/i960/cvme961/shmsupp/addrconv.c')
-rw-r--r--c/src/lib/libbsp/i960/cvme961/shmsupp/addrconv.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/i960/cvme961/shmsupp/addrconv.c b/c/src/lib/libbsp/i960/cvme961/shmsupp/addrconv.c
new file mode 100644
index 0000000000..7702d22e67
--- /dev/null
+++ b/c/src/lib/libbsp/i960/cvme961/shmsupp/addrconv.c
@@ -0,0 +1,37 @@
+/* Shm_Convert_address
+ *
+ * This routine takes into account the peculiar short VME address
+ * of the CVME961 board. The CVME961 maps short address space
+ * 0xffffxxxx to 0xb400xxxx.
+ *
+ * Input parameters:
+ * address - address to convert
+ *
+ * Output parameters:
+ * returns - converted address
+ *
+ * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
+ * On-Line Applications Research Corporation (OAR).
+ * All rights assigned to U.S. Government, 1994.
+ *
+ * This material may be reproduced by or for the U.S. Government pursuant
+ * to the copyright license under the clause at DFARS 252.227-7013. This
+ * notice must appear in all copies of this file and its derivatives.
+ *
+ * $Id$
+ */
+
+#include <rtems.h>
+#include <bsp.h>
+#include "shm.h"
+
+void *Shm_Convert_address(
+ void *address
+)
+{
+ rtems_unsigned32 workaddr = (rtems_unsigned32) address;
+
+ if ( workaddr >= 0xffff0000 )
+ workaddr = (workaddr & 0xffff) | 0xb4000000;
+ return ( (rtems_unsigned32 *)workaddr );
+}