1 files changed, 119 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.c b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.c
new file mode 100644
index 0000000000..b4f2d14931
--- /dev/null
+++ b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.c
@@ -0,0 +1,119 @@
+/* irq.c
+ *
+ *  This file contains the implementation of the function described in irq.h
+ *
+ *  CopyRight (C) 2000 Canon Research France SA.
+ *  Emmanuel Raguet,  mailto:raguet@crf.canon.fr
+ *
+ *  The license and distribution terms for this file may be
+ *  found in found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+
+#include <bsp.h>
+#include <irq.h>
+#include <registers.h>
+#include <rtems/score/thread.h>
+#include <rtems/score/apiext.h>
+
+
+/*
+ * This function check that the value given for the irq line
+ * is valid.
+ */
+
+static int isValidInterrupt(int irq)
+{
+  if ( (irq < 0) || (irq > BSP_MAX_INT))
+    return 0;
+  return 1;
+}
+
+/*
+ * ------------------------ RTEMS Single Irq Handler Mngt Routines ----------------
+ */
+
+int BSP_install_rtems_irq_handler  (const rtems_irq_connect_data* irq)
+{
+    rtems_irq_hdl *HdlTable;
+    
+    if (!isValidInterrupt(irq->name)) {
+      return 0;
+    }
+    /*
+     * Check if default handler is actually connected. If not issue an error.
+     */
+    HdlTable = VECTOR_TABLE;
+    if (*(HdlTable + irq->name) != default_int_handler) {
+      return 0;
+    }
+    
+    _CPU_ISR_Disable(level);
+
+    /*
+     * store the new handler
+     */
+    *(HdlTable + irq->name) = irq->hdl;
+
+    /*
+     * Here is the code to install an interrupt vector
+     * for the BSP : unmask INT, ....
+     * ........................
+     */
+
+    _CPU_ISR_Enable(level);
+
+    return 1;
+}
+
+int BSP_remove_rtems_irq_handler  (const rtems_irq_connect_data* irq)
+{
+    rtems_irq_hdl *HdlTable;
+  
+    if (!isValidInterrupt(irq->name)) {
+      return 0;
+    }
+    /*
+     * Check if the handler is actually connected. If not issue an error.
+     */
+    HdlTable = VECTOR_TABLE;
+    if (*(HdlTable + irq->name) != irq->hdl) {
+      return 0;
+    }
+    _CPU_ISR_Disable(level);
+
+    /*
+     * Here is the code to uninstall an interrupt vector
+     * for the BSP : mask INT, ....
+     * ........................
+     */
+
+    /*
+     * restore the default irq value
+     */
+    *(HdlTable + irq->name) = default_int_handler;
+          
+    _CPU_ISR_Enable(level);
+
+    return 1;
+}
+
+
+
+void _ThreadProcessSignalsFromIrq (CPU_Exception_frame* ctx)
+{
+  /*
+   * Process pending signals that have not already been
+   * processed by _Thread_Displatch. This happens quite
+   * unfrequently : the ISR must have posted an action
+   * to the current running thread.
+   */
+  if ( _Thread_Do_post_task_switch_extension ||
+       _Thread_Executing->do_post_task_switch_extension ) {
+    _Thread_Executing->do_post_task_switch_extension = FALSE;
+    _API_extensions_Run_postswitch();
+  }
+}