1 files changed, 114 insertions, 0 deletions
diff --git a/bsps/shared/irq/irq-handler-install.c b/bsps/shared/irq/irq-handler-install.c
new file mode 100644
index 0000000000..2474d792e6
--- /dev/null
+++ b/bsps/shared/irq/irq-handler-install.c
@@ -0,0 +1,114 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup bsp_interrupt
+ *
+ * @brief This source file contains the rtems_interrupt_handler_install()
+ *   implementation.
+ */
+
+/*
+ * Copyright (C) 2021 embedded brains GmbH (http://www.embedded-brains.de)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <bsp/irq-generic.h>
+#include <rtems/malloc.h>
+
+#include <stdlib.h>
+
+static rtems_status_code bsp_interrupt_handler_do_replace(
+  rtems_vector_number     vector,
+  const char             *info,
+  rtems_interrupt_handler routine,
+  void                   *arg
+)
+{
+  rtems_interrupt_entry  *entry;
+  rtems_interrupt_entry **unused;
+
+  entry = bsp_interrupt_entry_find( vector, routine, arg, &unused );
+
+  if ( entry == NULL ) {
+    return RTEMS_UNSATISFIED;
+  }
+
+  entry->handler = routine;
+  entry->info = info;
+
+  return RTEMS_SUCCESSFUL;
+}
+
+static rtems_status_code bsp_interrupt_handler_replace(
+  rtems_vector_number     vector,
+  const char             *info,
+  rtems_interrupt_handler routine,
+  void                   *arg
+)
+{
+  rtems_status_code sc;
+
+  sc = bsp_interrupt_check_and_lock( vector, routine );
+
+  if ( sc != RTEMS_SUCCESSFUL ) {
+    return sc;
+  }
+
+  sc = bsp_interrupt_handler_do_replace( vector, info, routine, arg );
+  bsp_interrupt_unlock();
+
+  return sc;
+}
+
+rtems_status_code rtems_interrupt_handler_install(
+  rtems_vector_number     vector,
+  const char             *info,
+  rtems_option            options,
+  rtems_interrupt_handler routine,
+  void                   *arg
+)
+{
+  rtems_interrupt_entry *entry;
+  rtems_status_code      sc;
+
+  if ( RTEMS_INTERRUPT_IS_REPLACE( options ) ) {
+    return bsp_interrupt_handler_replace( vector, info, routine, arg );
+  }
+
+  entry = rtems_malloc( sizeof( *entry ) );
+
+  if ( entry == NULL ) {
+    return RTEMS_NO_MEMORY;
+  }
+
+  rtems_interrupt_entry_initialize( entry, routine, arg, info );
+  sc = rtems_interrupt_entry_install( vector, options, entry );
+
+  if ( sc != RTEMS_SUCCESSFUL ) {
+    free( entry );
+  }
+
+  return sc;
+}