1 files changed, 61 insertions, 0 deletions
diff --git a/cpukit/rtems/src/intrcatch.c b/cpukit/rtems/src/intrcatch.c
new file mode 100644
index 0000000000..dc3f1d4684
--- /dev/null
+++ b/cpukit/rtems/src/intrcatch.c
@@ -0,0 +1,61 @@
+/*
+ *  Interrupt Manager
+ *
+ *
+ *  COPYRIGHT (c) 1989-1999.
+ *  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/rtems/status.h>
+#include <rtems/score/isr.h>
+#include <rtems/rtems/intr.h>
+
+#if (CPU_SIMPLE_VECTORED_INTERRUPTS == TRUE)
+
+/*  rtems_interrupt_catch
+ *
+ *  This directive allows a thread to specify what action to take when
+ *  catching signals.
+ *
+ *  Input parameters:
+ *    new_isr_handler - address of interrupt service routine (isr)
+ *    vector          - interrupt vector number
+ *    old_isr_handler - address at which to store previous ISR address
+ *
+ *  Output parameters:
+ *    RTEMS_SUCCESSFUL - always succeeds
+ *    *old_isr_handler  - previous ISR address
+ */
+
+rtems_status_code rtems_interrupt_catch(
+  rtems_isr_entry      new_isr_handler,
+  rtems_vector_number  vector,
+  rtems_isr_entry     *old_isr_handler
+)
+{
+  if ( !_ISR_Is_vector_number_valid( vector ) )
+    return RTEMS_INVALID_NUMBER;
+
+  if ( !_ISR_Is_valid_user_handler( (void *) new_isr_handler ) )
+    return RTEMS_INVALID_ADDRESS;
+
+  if ( !_ISR_Is_valid_user_handler( (void *) old_isr_handler ) )
+    return RTEMS_INVALID_ADDRESS;
+
+  _ISR_Install_vector(
+    vector, (proc_ptr)new_isr_handler, (proc_ptr *)old_isr_handler );
+
+  return RTEMS_SUCCESSFUL;
+}
+#endif