1 files changed, 51 insertions, 0 deletions
diff --git a/cpukit/score/src/chainget.c b/cpukit/score/src/chainget.c
new file mode 100644
index 0000000000..4ec11c112e
--- /dev/null
+++ b/cpukit/score/src/chainget.c
@@ -0,0 +1,51 @@
+/*
+ *  COPYRIGHT (c) 1989-2007.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems/system.h>
+#include <rtems/score/address.h>
+#include <rtems/score/chain.h>
+#include <rtems/score/isr.h>
+
+/*
+ *  _Chain_Get
+ *
+ *  This kernel routine returns a pointer to a node taken from the
+ *  given chain.
+ *
+ *  Input parameters:
+ *    the_chain - pointer to chain header
+ *
+ *  Output parameters:
+ *    return_node - pointer to node in chain allocated
+ *    CHAIN_END   - if no nodes available
+ *
+ *  INTERRUPT LATENCY:
+ *    only case
+ */
+
+Chain_Node *_Chain_Get(
+  Chain_Control *the_chain
+)
+{
+  ISR_Level          level;
+  Chain_Node *return_node;
+
+  return_node = NULL;
+  _ISR_Disable( level );
+    if ( !_Chain_Is_empty( the_chain ) )
+      return_node = _Chain_Get_first_unprotected( the_chain );
+  _ISR_Enable( level );
+  return return_node;
+}