[PATCH v1] c-user: Add documentation for exception mapping

[Kinsey Moore]

This adds the documention generated by rtems-central for
CONFIGURE_APPLICATION_NEEDS_EXCEPTION_TO_SIGNAL_MAPPING.
---
 c-user/config/device-driver.rst | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/c-user/config/device-driver.rst b/c-user/config/device-driver.rst
index 05ae08a..9dcc5f4 100644
--- a/c-user/config/device-driver.rst
+++ b/c-user/config/device-driver.rst
@@ -1,7 +1,7 @@
 .. SPDX-License-Identifier: CC-BY-SA-4.0
 
 .. Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
-.. Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
+.. Copyright (C) 1988, 2021 On-Line Applications Research Corporation (OAR)
 
 .. This file is part of the RTEMS quality process and was automatically
 .. generated.  If you find something that needs to be fixed or
@@ -204,6 +204,36 @@ NOTES:
 
     configuration options are mutually exclusive.
 
+.. Generated from spec:/acfg/if/appl-needs-exception-to-signal-mapping
+
+.. index:: CONFIGURE_APPLICATION_NEEDS_EXCEPTION_TO_SIGNAL_MAPPING
+
+.. _CONFIGURE_APPLICATION_NEEDS_EXCEPTION_TO_SIGNAL_MAPPING:
+
+CONFIGURE_APPLICATION_NEEDS_EXCEPTION_TO_SIGNAL_MAPPING
+-------------------------------------------------------
+
+CONSTANT:
+    ``CONFIGURE_APPLICATION_NEEDS_EXCEPTION_TO_SIGNAL_MAPPING``
+
+OPTION TYPE:
+    This configuration option is a boolean feature define.
+
+DEFAULT CONFIGURATION:
+    If this configuration option is undefined, then the described feature is not
+    enabled.
+
+DESCRIPTION:
+    In case this configuration option is defined, then the machine exception to
+    POSIX signal mapping is configured during system initialization.
+
+NOTES:
+    This device driver is responsible for setting up a mapping from machine
+    exceptions to POSIX signals so that applications may consume them and alter
+    task execution as necessary.
+
+    This is especially useful for applications written in Ada or C++.
+
 .. Generated from spec:/acfg/if/appl-needs-framebuffer-driver
 
 .. index:: CONFIGURE_APPLICATION_NEEDS_FRAME_BUFFER_DRIVER
-- 
2.20.1