1 files changed, 77 insertions, 0 deletions
diff --git a/c/src/lib/libcpu/sh/sh7032/include/ioqueue.h b/c/src/lib/libcpu/sh/sh7032/include/ioqueue.h
new file mode 100644
index 0000000000..55020acfad
--- /dev/null
+++ b/c/src/lib/libcpu/sh/sh7032/include/ioqueue.h
@@ -0,0 +1,77 @@
+/*
+ * Defines for low level queue management
+ *
+ *  Author: Ralf Corsepius (corsepiu@faw.uni-ulm.de)
+ *
+ *  COPYRIGHT (c) 1997-1998, Ralf Corsepius, Germany
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * 
+ *
+ *  COPYRIGHT (c) 1998.
+ *  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.
+ *
+ * $Id$
+ * 
+ */
+
+#ifndef _io_queue_h
+#define _io_queue_h
+
+#include <stdlib.h>	/* size_t */
+
+/*
+ * NOTE: size needs to be a power of 2
+ */
+#define IO_QUEUE(type,size,name) 			\
+typedef struct {					\
+  volatile type			queue[size] ;		\
+  volatile unsigned short	tail ;			\
+  volatile unsigned short	head ;			\
+} name ;
+
+#define IO_QUEUE_FULL(queue, size) \
+  ((queue)->tail == (((queue)->head+1) & ((size)-1)))
+
+#define IO_QUEUE_EMPTY(queue) \
+  (((queue)->tail) == ((queue)->head))
+
+#define IO_QUEUE_INIT(queue) \
+  (queue)->tail = (queue)->head = 0
+
+#define IO_QUEUE_ADD(queue,size) \
+  (queue)->head = (((queue)->head + 1) & ((size)-1))
+  
+#define IO_QUEUE_SUB(queue,size) \
+  (queue)->tail = (((queue)->tail + 1) & ((size)-1))
+
+#define IO_QUEUE_PUT(_queue,item) \
+{ \
+    size_t i; \
+    unsigned char* dest = (unsigned char*) ((_queue)->queue[(_queue)->head]); \
+    unsigned char* src  = (unsigned char*) (item); \
+    for( i = 0; i < sizeof(item); i++) \
+    { \
+	dest[i] = src[i]; \
+    } \
+}
+
+#define IO_QUEUE_GET(_queue,item) \
+{\
+   size_t i; \
+   unsigned char *src = (unsigned char*) (_queue)->queue[(_queue)->tail]; \
+   unsigned char *dest = (unsigned char*) (item); \
+   for( i=0; i< sizeof(item); i++)\
+   {\
+      dest[i] = src[i]; \
+   }\
+}
+
+#endif