From b0deb1b5bdee0f0d6af0969d52f05a86e6ebefdf Mon Sep 17 00:00:00 2001
From: "David B. Kinder" <david.b.kinder@intel.com>
Date: Wed, 4 Jul 2018 11:15:38 -0700
Subject: [PATCH] doc: add support for kerneldoc API tools

Some ACRN kernel components are using the API documentation methods of
the Linux kernel.  While they use Sphinx for generating their
documentation, they don't use doxygen to collect the API information as
we do for the rest of the project.  Instead, they use their own tools
called "kerneldoc".  This PR incorporates those tools into our
documentation build process.

There is a prescribed directory structure for this to work: that the
acrn-hypervisor and acrn-kernel repos are cloned to sibling folders,
e.g.:

    projectacrn
       acrn-hypervisor
       acrn-kernel

so that documentation references from acrn_hypervisor/doc can access the
source code in ../../acrn-kernel to do the kerneldoc processing.  A full
display of the kerneldoc API material for a source file in the
acrn-kernel tree can be done using a sphinx extension directive:

    .. kernel-doc:: /tools/virtio/linux/scatterlist.h

where the assumed root of these file references is ../../acrn-kernel.

The format for kerneldoc comments is documented in
https://www.kernel.org/doc/html/latest/doc-guide/kernel-doc.html and
references to kerneldoc API material in .rst files is documented in
https://www.kernel.org/doc/html/latest/doc-guide/kernel-doc.html#including-kernel-doc-comments

Without options, the kernel-doc directive includes all documentation
comments from the source file. With options, you can display subsets of
these comments.

The intention is to limit use of kerneldoc comments to the acrn-kernel
repo and not use them elsewhere within the ACRN project (where doxygen
comments are expected.)

While I'd prefer NOT to include the kerneldoc perl script here (it is
already in the acrn-kernel/sphinx folder), I don't want to create a
dependency on the acrn-kernel folder existing for documentation
generation, but this might be unavoidable once we have part of the API
material coming from there.  We can update this in a later PR.

Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
---
 doc/conf.py                 |   12 +-
 doc/extensions/kerneldoc.py |  146 ++
 doc/scripts/kernel-doc      | 3219 +++++++++++++++++++++++++++++++++++
 3 files changed, 3376 insertions(+), 1 deletion(-)
 create mode 100644 doc/extensions/kerneldoc.py
 create mode 100755 doc/scripts/kernel-doc

diff --git a/doc/conf.py b/doc/conf.py
index ac4db0b94..1b24bfd4e 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -30,7 +30,17 @@ sys.path.insert(0, os.path.abspath('.'))
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
-extensions = ['breathe', 'sphinx.ext.graphviz']
+
+sys.path.insert(0, os.path.join(os.path.abspath('.'), 'extensions'))
+extensions = ['breathe', 'sphinx.ext.graphviz', 'kerneldoc']
+
+# kernel-doc extension configuration for running Sphinx directly (e.g. by Read
+# the Docs). In a normal build, these are supplied from the Makefile via command
+# line arguments.
+
+kerneldoc_bin = 'scripts/kernel-doc'
+kerneldoc_srctree = '../../acrn-kernel'
+
 
 graphviz_output_format='png'
 graphviz_dot_args=[
diff --git a/doc/extensions/kerneldoc.py b/doc/extensions/kerneldoc.py
new file mode 100644
index 000000000..fbedcc394
--- /dev/null
+++ b/doc/extensions/kerneldoc.py
@@ -0,0 +1,146 @@
+# coding=utf-8
+#
+# Copyright © 2016 Intel Corporation
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice (including the next
+# paragraph) shall be included in all copies or substantial portions of the
+# Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+#
+# Authors:
+#    Jani Nikula <jani.nikula@intel.com>
+#
+# Please make sure this works on both python2 and python3.
+#
+
+import codecs
+import os
+import subprocess
+import sys
+import re
+import glob
+
+from docutils import nodes, statemachine
+from docutils.statemachine import ViewList
+from docutils.parsers.rst import directives, Directive
+from sphinx.ext.autodoc import AutodocReporter
+
+__version__  = '1.0'
+
+class KernelDocDirective(Directive):
+    """Extract kernel-doc comments from the specified file"""
+    required_argument = 1
+    optional_arguments = 4
+    option_spec = {
+        'doc': directives.unchanged_required,
+        'functions': directives.unchanged_required,
+        'export': directives.unchanged,
+        'internal': directives.unchanged,
+    }
+    has_content = False
+
+    def run(self):
+        env = self.state.document.settings.env
+        cmd = [env.config.kerneldoc_bin, '-rst', '-enable-lineno']
+
+        filename = env.config.kerneldoc_srctree + '/' + self.arguments[0]
+        export_file_patterns = []
+
+        # Tell sphinx of the dependency
+        env.note_dependency(os.path.abspath(filename))
+
+        tab_width = self.options.get('tab-width', self.state.document.settings.tab_width)
+
+        # FIXME: make this nicer and more robust against errors
+        if 'export' in self.options:
+            cmd += ['-export']
+            export_file_patterns = str(self.options.get('export')).split()
+        elif 'internal' in self.options:
+            cmd += ['-internal']
+            export_file_patterns = str(self.options.get('internal')).split()
+        elif 'doc' in self.options:
+            cmd += ['-function', str(self.options.get('doc'))]
+        elif 'functions' in self.options:
+            for f in str(self.options.get('functions')).split():
+                cmd += ['-function', f]
+
+        for pattern in export_file_patterns:
+            for f in glob.glob(env.config.kerneldoc_srctree + '/' + pattern):
+                env.note_dependency(os.path.abspath(f))
+                cmd += ['-export-file', f]
+
+        cmd += [filename]
+
+        try:
+            env.app.verbose('calling kernel-doc \'%s\'' % (" ".join(cmd)))
+
+            p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+            out, err = p.communicate()
+
+            out, err = codecs.decode(out, 'utf-8'), codecs.decode(err, 'utf-8')
+
+            if p.returncode != 0:
+                sys.stderr.write(err)
+
+                env.app.warn('kernel-doc \'%s\' failed with return code %d' % (" ".join(cmd), p.returncode))
+                return [nodes.error(None, nodes.paragraph(text = "kernel-doc missing"))]
+            elif env.config.kerneldoc_verbosity > 0:
+                sys.stderr.write(err)
+
+            lines = statemachine.string2lines(out, tab_width, convert_whitespace=True)
+            result = ViewList()
+
+            lineoffset = 0;
+            line_regex = re.compile("^#define LINENO ([0-9]+)$")
+            for line in lines:
+                match = line_regex.search(line)
+                if match:
+                    # sphinx counts lines from 0
+                    lineoffset = int(match.group(1)) - 1
+                    # we must eat our comments since the upset the markup
+                else:
+                    result.append(line, filename, lineoffset)
+                    lineoffset += 1
+
+            node = nodes.section()
+            buf = self.state.memo.title_styles, self.state.memo.section_level, self.state.memo.reporter
+            self.state.memo.reporter = AutodocReporter(result, self.state.memo.reporter)
+            self.state.memo.title_styles, self.state.memo.section_level = [], 0
+            try:
+                self.state.nested_parse(result, 0, node, match_titles=1)
+            finally:
+                self.state.memo.title_styles, self.state.memo.section_level, self.state.memo.reporter = buf
+
+            return node.children
+
+        except Exception as e:  # pylint: disable=W0703
+            env.app.warn('kernel-doc \'%s\' processing failed with: %s' %
+                         (" ".join(cmd), str(e)))
+            return [nodes.error(None, nodes.paragraph(text = "kernel-doc missing"))]
+
+def setup(app):
+    app.add_config_value('kerneldoc_bin', None, 'env')
+    app.add_config_value('kerneldoc_srctree', None, 'env')
+    app.add_config_value('kerneldoc_verbosity', 1, 'env')
+
+    app.add_directive('kernel-doc', KernelDocDirective)
+
+    return dict(
+        version = __version__,
+        parallel_read_safe = True,
+        parallel_write_safe = True
+    )
diff --git a/doc/scripts/kernel-doc b/doc/scripts/kernel-doc
new file mode 100755
index 000000000..8bcf90407
--- /dev/null
+++ b/doc/scripts/kernel-doc
@@ -0,0 +1,3219 @@
+#!/usr/bin/env perl
+
+use warnings;
+use strict;
+
+## Copyright (c) 1998 Michael Zucchi, All Rights Reserved        ##
+## Copyright (C) 2000, 1  Tim Waugh <twaugh@redhat.com>          ##
+## Copyright (C) 2001  Simon Huggins                             ##
+## Copyright (C) 2005-2012  Randy Dunlap                         ##
+## Copyright (C) 2012  Dan Luedtke                               ##
+## 								 ##
+## #define enhancements by Armin Kuster <akuster@mvista.com>	 ##
+## Copyright (c) 2000 MontaVista Software, Inc.			 ##
+## 								 ##
+## This software falls under the GNU General Public License.     ##
+## Please read the COPYING file for more information             ##
+
+# 18/01/2001 - 	Cleanups
+# 		Functions prototyped as foo(void) same as foo()
+# 		Stop eval'ing where we don't need to.
+# -- huggie@earth.li
+
+# 27/06/2001 -  Allowed whitespace after initial "/**" and
+#               allowed comments before function declarations.
+# -- Christian Kreibich <ck@whoop.org>
+
+# Still to do:
+# 	- add perldoc documentation
+# 	- Look more closely at some of the scarier bits :)
+
+# 26/05/2001 - 	Support for separate source and object trees.
+#		Return error code.
+# 		Keith Owens <kaos@ocs.com.au>
+
+# 23/09/2001 - Added support for typedefs, structs, enums and unions
+#              Support for Context section; can be terminated using empty line
+#              Small fixes (like spaces vs. \s in regex)
+# -- Tim Jansen <tim@tjansen.de>
+
+# 25/07/2012 - Added support for HTML5
+# -- Dan Luedtke <mail@danrl.de>
+
+sub usage {
+    my $message = <<"EOF";
+Usage: $0 [OPTION ...] FILE ...
+
+Read C language source or header FILEs, extract embedded documentation comments,
+and print formatted documentation to standard output.
+
+The documentation comments are identified by "/**" opening comment mark. See
+Documentation/kernel-doc-nano-HOWTO.txt for the documentation comment syntax.
+
+Output format selection (mutually exclusive):
+  -docbook		Output DocBook format.
+  -html			Output HTML format.
+  -html5		Output HTML5 format.
+  -list			Output symbol list format. This is for use by docproc.
+  -man			Output troff manual page format. This is the default.
+  -rst			Output reStructuredText format.
+  -text			Output plain text format.
+
+Output selection (mutually exclusive):
+  -export		Only output documentation for symbols that have been
+			exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL()
+                        in any input FILE or -export-file FILE.
+  -internal		Only output documentation for symbols that have NOT been
+			exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL()
+                        in any input FILE or -export-file FILE.
+  -function NAME	Only output documentation for the given function(s)
+			or DOC: section title(s). All other functions and DOC:
+			sections are ignored. May be specified multiple times.
+  -nofunction NAME	Do NOT output documentation for the given function(s);
+			only output documentation for the other functions and
+			DOC: sections. May be specified multiple times.
+
+Output selection modifiers:
+  -no-doc-sections	Do not output DOC: sections.
+  -enable-lineno        Enable output of #define LINENO lines. Only works with
+                        reStructuredText format.
+  -export-file FILE     Specify an additional FILE in which to look for
+                        EXPORT_SYMBOL() and EXPORT_SYMBOL_GPL(). To be used with
+                        -export or -internal. May be specified multiple times.
+
+Other parameters:
+  -v			Verbose output, more warnings and other information.
+  -h			Print this help.
+
+EOF
+    print $message;
+    exit 1;
+}
+
+#
+# format of comments.
+# In the following table, (...)? signifies optional structure.
+#                         (...)* signifies 0 or more structure elements
+# /**
+#  * function_name(:)? (- short description)?
+# (* @parameterx: (description of parameter x)?)*
+# (* a blank line)?
+#  * (Description:)? (Description of function)?
+#  * (section header: (section description)? )*
+#  (*)?*/
+#
+# So .. the trivial example would be:
+#
+# /**
+#  * my_function
+#  */
+#
+# If the Description: header tag is omitted, then there must be a blank line
+# after the last parameter specification.
+# e.g.
+# /**
+#  * my_function - does my stuff
+#  * @my_arg: its mine damnit
+#  *
+#  * Does my stuff explained.
+#  */
+#
+#  or, could also use:
+# /**
+#  * my_function - does my stuff
+#  * @my_arg: its mine damnit
+#  * Description: Does my stuff explained.
+#  */
+# etc.
+#
+# Besides functions you can also write documentation for structs, unions,
+# enums and typedefs. Instead of the function name you must write the name
+# of the declaration;  the struct/union/enum/typedef must always precede
+# the name. Nesting of declarations is not supported.
+# Use the argument mechanism to document members or constants.
+# e.g.
+# /**
+#  * struct my_struct - short description
+#  * @a: first member
+#  * @b: second member
+#  *
+#  * Longer description
+#  */
+# struct my_struct {
+#     int a;
+#     int b;
+# /* private: */
+#     int c;
+# };
+#
+# All descriptions can be multiline, except the short function description.
+#
+# For really longs structs, you can also describe arguments inside the
+# body of the struct.
+# eg.
+# /**
+#  * struct my_struct - short description
+#  * @a: first member
+#  * @b: second member
+#  *
+#  * Longer description
+#  */
+# struct my_struct {
+#     int a;
+#     int b;
+#     /**
+#      * @c: This is longer description of C
+#      *
+#      * You can use paragraphs to describe arguments
+#      * using this method.
+#      */
+#     int c;
+# };
+#
+# This should be use only for struct/enum members.
+#
+# You can also add additional sections. When documenting kernel functions you
+# should document the "Context:" of the function, e.g. whether the functions
+# can be called form interrupts. Unlike other sections you can end it with an
+# empty line.
+# A non-void function should have a "Return:" section describing the return
+# value(s).
+# Example-sections should contain the string EXAMPLE so that they are marked
+# appropriately in DocBook.
+#
+# Example:
+# /**
+#  * user_function - function that can only be called in user context
+#  * @a: some argument
+#  * Context: !in_interrupt()
+#  *
+#  * Some description
+#  * Example:
+#  *    user_function(22);
+#  */
+# ...
+#
+#
+# All descriptive text is further processed, scanning for the following special
+# patterns, which are highlighted appropriately.
+#
+# 'funcname()' - function
+# '$ENVVAR' - environmental variable
+# '&struct_name' - name of a structure (up to two words including 'struct')
+# '&struct_name.member' - name of a structure member
+# '@parameter' - name of a parameter
+# '%CONST' - name of a constant.
+# '``LITERAL``' - literal string without any spaces on it.
+
+## init lots of data
+
+my $errors = 0;
+my $warnings = 0;
+my $anon_struct_union = 0;
+
+# match expressions used to find embedded type information
+my $type_constant = '\b``([^\`]+)``\b';
+my $type_constant2 = '\%([-_\w]+)';
+my $type_func = '(\w+)\(\)';
+my $type_param = '\@(\w+(\.\.\.)?)';
+my $type_fp_param = '\@(\w+)\(\)';  # Special RST handling for func ptr params
+my $type_env = '(\$\w+)';
+my $type_enum = '\&(enum\s*([_\w]+))';
+my $type_struct = '\&(struct\s*([_\w]+))';
+my $type_typedef = '\&(typedef\s*([_\w]+))';
+my $type_union = '\&(union\s*([_\w]+))';
+my $type_member = '\&([_\w]+)(\.|->)([_\w]+)';
+my $type_fallback = '\&([_\w]+)';
+my $type_enum_xml = '\&amp;(enum\s*([_\w]+))';
+my $type_struct_xml = '\&amp;(struct\s*([_\w]+))';
+my $type_typedef_xml = '\&amp;(typedef\s*([_\w]+))';
+my $type_union_xml = '\&amp;(union\s*([_\w]+))';
+my $type_member_xml = '\&amp;([_\w]+)(\.|-\&gt;)([_\w]+)';
+my $type_fallback_xml = '\&amp([_\w]+)';
+my $type_member_func = $type_member . '\(\)';
+
+# Output conversion substitutions.
+#  One for each output format
+
+# these work fairly well
+my @highlights_html = (
+                       [$type_constant, "<i>\$1</i>"],
+                       [$type_constant2, "<i>\$1</i>"],
+                       [$type_func, "<b>\$1</b>"],
+                       [$type_enum_xml, "<i>\$1</i>"],
+                       [$type_struct_xml, "<i>\$1</i>"],
+                       [$type_typedef_xml, "<i>\$1</i>"],
+                       [$type_union_xml, "<i>\$1</i>"],
+                       [$type_env, "<b><i>\$1</i></b>"],
+                       [$type_param, "<tt><b>\$1</b></tt>"],
+                       [$type_member_xml, "<tt><i>\$1</i>\$2\$3</tt>"],
+                       [$type_fallback_xml, "<i>\$1</i>"]
+                      );
+my $local_lt = "\\\\\\\\lt:";
+my $local_gt = "\\\\\\\\gt:";
+my $blankline_html = $local_lt . "p" . $local_gt;	# was "<p>"
+
+# html version 5
+my @highlights_html5 = (
+                        [$type_constant, "<span class=\"const\">\$1</span>"],
+                        [$type_constant2, "<span class=\"const\">\$1</span>"],
+                        [$type_func, "<span class=\"func\">\$1</span>"],
+                        [$type_enum_xml, "<span class=\"enum\">\$1</span>"],
+                        [$type_struct_xml, "<span class=\"struct\">\$1</span>"],
+                        [$type_typedef_xml, "<span class=\"typedef\">\$1</span>"],
+                        [$type_union_xml, "<span class=\"union\">\$1</span>"],
+                        [$type_env, "<span class=\"env\">\$1</span>"],
+                        [$type_param, "<span class=\"param\">\$1</span>]"],
+                        [$type_member_xml, "<span class=\"literal\"><span class=\"struct\">\$1</span>\$2<span class=\"member\">\$3</span></span>"],
+                        [$type_fallback_xml, "<span class=\"struct\">\$1</span>"]
+		       );
+my $blankline_html5 = $local_lt . "br /" . $local_gt;
+
+# XML, docbook format
+my @highlights_xml = (
+                      ["([^=])\\\"([^\\\"<]+)\\\"", "\$1<quote>\$2</quote>"],
+                      [$type_constant, "<constant>\$1</constant>"],
+                      [$type_constant2, "<constant>\$1</constant>"],
+                      [$type_enum_xml, "<type>\$1</type>"],
+                      [$type_struct_xml, "<structname>\$1</structname>"],
+                      [$type_typedef_xml, "<type>\$1</type>"],
+                      [$type_union_xml, "<structname>\$1</structname>"],
+                      [$type_param, "<parameter>\$1</parameter>"],
+                      [$type_func, "<function>\$1</function>"],
+                      [$type_env, "<envar>\$1</envar>"],
+                      [$type_member_xml, "<literal><structname>\$1</structname>\$2<structfield>\$3</structfield></literal>"],
+                      [$type_fallback_xml, "<structname>\$1</structname>"]
+		     );
+my $blankline_xml = $local_lt . "/para" . $local_gt . $local_lt . "para" . $local_gt . "\n";
+
+# gnome, docbook format
+my @highlights_gnome = (
+                        [$type_constant, "<replaceable class=\"option\">\$1</replaceable>"],
+                        [$type_constant2, "<replaceable class=\"option\">\$1</replaceable>"],
+                        [$type_func, "<function>\$1</function>"],
+                        [$type_enum, "<type>\$1</type>"],
+                        [$type_struct, "<structname>\$1</structname>"],
+                        [$type_typedef, "<type>\$1</type>"],
+                        [$type_union, "<structname>\$1</structname>"],
+                        [$type_env, "<envar>\$1</envar>"],
+                        [$type_param, "<parameter>\$1</parameter>" ],
+                        [$type_member, "<literal><structname>\$1</structname>\$2<structfield>\$3</structfield></literal>"],
+                        [$type_fallback, "<structname>\$1</structname>"]
+		       );
+my $blankline_gnome = "</para><para>\n";
+
+# these are pretty rough
+my @highlights_man = (
+                      [$type_constant, "\$1"],
+                      [$type_constant2, "\$1"],
+                      [$type_func, "\\\\fB\$1\\\\fP"],
+                      [$type_enum, "\\\\fI\$1\\\\fP"],
+                      [$type_struct, "\\\\fI\$1\\\\fP"],
+                      [$type_typedef, "\\\\fI\$1\\\\fP"],
+                      [$type_union, "\\\\fI\$1\\\\fP"],
+                      [$type_param, "\\\\fI\$1\\\\fP"],
+                      [$type_member, "\\\\fI\$1\$2\$3\\\\fP"],
+                      [$type_fallback, "\\\\fI\$1\\\\fP"]
+		     );
+my $blankline_man = "";
+
+# text-mode
+my @highlights_text = (
+                       [$type_constant, "\$1"],
+                       [$type_constant2, "\$1"],
+                       [$type_func, "\$1"],
+                       [$type_enum, "\$1"],
+                       [$type_struct, "\$1"],
+                       [$type_typedef, "\$1"],
+                       [$type_union, "\$1"],
+                       [$type_param, "\$1"],
+                       [$type_member, "\$1\$2\$3"],
+                       [$type_fallback, "\$1"]
+		      );
+my $blankline_text = "";
+
+# rst-mode
+my @highlights_rst = (
+                       [$type_constant, "``\$1``"],
+                       [$type_constant2, "``\$1``"],
+                       # Note: need to escape () to avoid func matching later
+                       [$type_member_func, "\\:c\\:type\\:`\$1\$2\$3\\\\(\\\\) <\$1>`"],
+                       [$type_member, "\\:c\\:type\\:`\$1\$2\$3 <\$1>`"],
+		       [$type_fp_param, "**\$1\\\\(\\\\)**"],
+                       [$type_func, "\\:c\\:func\\:`\$1()`"],
+                       [$type_enum, "\\:c\\:type\\:`\$1 <\$2>`"],
+                       [$type_struct, "\\:c\\:type\\:`\$1 <\$2>`"],
+                       [$type_typedef, "\\:c\\:type\\:`\$1 <\$2>`"],
+                       [$type_union, "\\:c\\:type\\:`\$1 <\$2>`"],
+                       # in rst this can refer to any type
+                       [$type_fallback, "\\:c\\:type\\:`\$1`"],
+                       [$type_param, "**\$1**"]
+		      );
+my $blankline_rst = "\n";
+
+# list mode
+my @highlights_list = (
+                       [$type_constant, "\$1"],
+                       [$type_constant2, "\$1"],
+                       [$type_func, "\$1"],
+                       [$type_enum, "\$1"],
+                       [$type_struct, "\$1"],
+                       [$type_typedef, "\$1"],
+                       [$type_union, "\$1"],
+                       [$type_param, "\$1"],
+                       [$type_member, "\$1"],
+                       [$type_fallback, "\$1"]
+		      );
+my $blankline_list = "";
+
+# read arguments
+if ($#ARGV == -1) {
+    usage();
+}
+
+my $kernelversion;
+my $dohighlight = "";
+
+my $verbose = 0;
+my $output_mode = "man";
+my $output_preformatted = 0;
+my $no_doc_sections = 0;
+my $enable_lineno = 0;
+my @highlights = @highlights_man;
+my $blankline = $blankline_man;
+my $modulename = "Kernel API";
+
+use constant {
+    OUTPUT_ALL          => 0, # output all symbols and doc sections
+    OUTPUT_INCLUDE      => 1, # output only specified symbols
+    OUTPUT_EXCLUDE      => 2, # output everything except specified symbols
+    OUTPUT_EXPORTED     => 3, # output exported symbols
+    OUTPUT_INTERNAL     => 4, # output non-exported symbols
+};
+my $output_selection = OUTPUT_ALL;
+my $show_not_found = 0;
+
+my @export_file_list;
+
+my @build_time;
+if (defined($ENV{'KBUILD_BUILD_TIMESTAMP'}) &&
+    (my $seconds = `date -d"${ENV{'KBUILD_BUILD_TIMESTAMP'}}" +%s`) ne '') {
+    @build_time = gmtime($seconds);
+} else {
+    @build_time = localtime;
+}
+
+my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
+		'July', 'August', 'September', 'October',
+		'November', 'December')[$build_time[4]] .
+  " " . ($build_time[5]+1900);
+
+# Essentially these are globals.
+# They probably want to be tidied up, made more localised or something.
+# CAVEAT EMPTOR!  Some of the others I localised may not want to be, which
+# could cause "use of undefined value" or other bugs.
+my ($function, %function_table, %parametertypes, $declaration_purpose);
+my $declaration_start_line;
+my ($type, $declaration_name, $return_type);
+my ($newsection, $newcontents, $prototype, $brcount, %source_map);
+
+if (defined($ENV{'KBUILD_VERBOSE'})) {
+	$verbose = "$ENV{'KBUILD_VERBOSE'}";
+}
+
+# Generated docbook code is inserted in a template at a point where
+# docbook v3.1 requires a non-zero sequence of RefEntry's; see:
+# http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
+# We keep track of number of generated entries and generate a dummy
+# if needs be to ensure the expanded template can be postprocessed
+# into html.
+my $section_counter = 0;
+
+my $lineprefix="";
+
+# Parser states
+use constant {
+    STATE_NORMAL        => 0, # normal code
+    STATE_NAME          => 1, # looking for function name
+    STATE_FIELD         => 2, # scanning field start
+    STATE_PROTO         => 3, # scanning prototype
+    STATE_DOCBLOCK      => 4, # documentation block
+    STATE_INLINE        => 5, # gathering documentation outside main block
+};
+my $state;
+my $in_doc_sect;
+
+# Inline documentation state
+use constant {
+    STATE_INLINE_NA     => 0, # not applicable ($state != STATE_INLINE)
+    STATE_INLINE_NAME   => 1, # looking for member name (@foo:)
+    STATE_INLINE_TEXT   => 2, # looking for member documentation
+    STATE_INLINE_END    => 3, # done
+    STATE_INLINE_ERROR  => 4, # error - Comment without header was found.
+                              # Spit a warning as it's not
+                              # proper kernel-doc and ignore the rest.
+};
+my $inline_doc_state;
+
+#declaration types: can be
+# 'function', 'struct', 'union', 'enum', 'typedef'
+my $decl_type;
+
+my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
+my $doc_end = '\*/';
+my $doc_com = '\s*\*\s*';
+my $doc_com_body = '\s*\* ?';
+my $doc_decl = $doc_com . '(\w+)';
+# @params and a strictly limited set of supported section names
+my $doc_sect = $doc_com . 
+    '\s*(\@[.\w]+|\@\.\.\.|description|context|returns?|notes?|examples?)\s*:(.*)';
+my $doc_content = $doc_com_body . '(.*)';
+my $doc_block = $doc_com . 'DOC:\s*(.*)?';
+my $doc_inline_start = '^\s*/\*\*\s*$';
+my $doc_inline_sect = '\s*\*\s*(@[\w\s]+):(.*)';
+my $doc_inline_end = '^\s*\*/\s*$';
+my $doc_inline_oneline = '^\s*/\*\*\s*(@[\w\s]+):\s*(.*)\s*\*/\s*$';
+my $export_symbol = '^\s*EXPORT_SYMBOL(_GPL)?\s*\(\s*(\w+)\s*\)\s*;';
+
+my %parameterdescs;
+my %parameterdesc_start_lines;
+my @parameterlist;
+my %sections;
+my @sectionlist;
+my %section_start_lines;
+my $sectcheck;
+my $struct_actual;
+
+my $contents = "";
+my $new_start_line = 0;
+
+# the canonical section names. see also $doc_sect above.
+my $section_default = "Description";	# default section
+my $section_intro = "Introduction";
+my $section = $section_default;
+my $section_context = "Context";
+my $section_return = "Return";
+
+my $undescribed = "-- undescribed --";
+
+reset_state();
+
+while ($ARGV[0] =~ m/^-(.*)/) {
+    my $cmd = shift @ARGV;
+    if ($cmd eq "-html") {
+	$output_mode = "html";
+	@highlights = @highlights_html;
+	$blankline = $blankline_html;
+    } elsif ($cmd eq "-html5") {
+	$output_mode = "html5";
+	@highlights = @highlights_html5;
+	$blankline = $blankline_html5;
+    } elsif ($cmd eq "-man") {
+	$output_mode = "man";
+	@highlights = @highlights_man;
+	$blankline = $blankline_man;
+    } elsif ($cmd eq "-text") {
+	$output_mode = "text";
+	@highlights = @highlights_text;
+	$blankline = $blankline_text;
+    } elsif ($cmd eq "-rst") {
+	$output_mode = "rst";
+	@highlights = @highlights_rst;
+	$blankline = $blankline_rst;
+    } elsif ($cmd eq "-docbook") {
+	$output_mode = "xml";
+	@highlights = @highlights_xml;
+	$blankline = $blankline_xml;
+    } elsif ($cmd eq "-list") {
+	$output_mode = "list";
+	@highlights = @highlights_list;
+	$blankline = $blankline_list;
+    } elsif ($cmd eq "-gnome") {
+	$output_mode = "gnome";
+	@highlights = @highlights_gnome;
+	$blankline = $blankline_gnome;
+    } elsif ($cmd eq "-module") { # not needed for XML, inherits from calling document
+	$modulename = shift @ARGV;
+    } elsif ($cmd eq "-function") { # to only output specific functions
+	$output_selection = OUTPUT_INCLUDE;
+	$function = shift @ARGV;
+	$function_table{$function} = 1;
+    } elsif ($cmd eq "-nofunction") { # output all except specific functions
+	$output_selection = OUTPUT_EXCLUDE;
+	$function = shift @ARGV;
+	$function_table{$function} = 1;
+    } elsif ($cmd eq "-export") { # only exported symbols
+	$output_selection = OUTPUT_EXPORTED;
+	%function_table = ();
+    } elsif ($cmd eq "-internal") { # only non-exported symbols
+	$output_selection = OUTPUT_INTERNAL;
+	%function_table = ();
+    } elsif ($cmd eq "-export-file") {
+	my $file = shift @ARGV;
+	push(@export_file_list, $file);
+    } elsif ($cmd eq "-v") {
+	$verbose = 1;
+    } elsif (($cmd eq "-h") || ($cmd eq "--help")) {
+	usage();
+    } elsif ($cmd eq '-no-doc-sections') {
+	    $no_doc_sections = 1;
+    } elsif ($cmd eq '-enable-lineno') {
+	    $enable_lineno = 1;
+    } elsif ($cmd eq '-show-not-found') {
+	$show_not_found = 1;
+    }
+}
+
+# continue execution near EOF;
+
+# get kernel version from env
+sub get_kernel_version() {
+    my $version = 'unknown kernel version';
+
+    if (defined($ENV{'KERNELVERSION'})) {
+	$version = $ENV{'KERNELVERSION'};
+    }
+    return $version;
+}
+
+#
+sub print_lineno {
+    my $lineno = shift;
+    if ($enable_lineno && defined($lineno)) {
+        print "#define LINENO " . $lineno . "\n";
+    }
+}
+##
+# dumps section contents to arrays/hashes intended for that purpose.
+#
+sub dump_section {
+    my $file = shift;
+    my $name = shift;
+    my $contents = join "\n", @_;
+
+    if ($name =~ m/$type_param/) {
+	$name = $1;
+	$parameterdescs{$name} = $contents;
+	$sectcheck = $sectcheck . $name . " ";
+        $parameterdesc_start_lines{$name} = $new_start_line;
+        $new_start_line = 0;
+    } elsif ($name eq "@\.\.\.") {
+	$name = "...";
+	$parameterdescs{$name} = $contents;
+	$sectcheck = $sectcheck . $name . " ";
+        $parameterdesc_start_lines{$name} = $new_start_line;
+        $new_start_line = 0;
+    } else {
+	if (defined($sections{$name}) && ($sections{$name} ne "")) {
+	    # Only warn on user specified duplicate section names.
+	    if ($name ne $section_default) {
+		print STDERR "${file}:$.: warning: duplicate section name '$name'\n";
+		++$warnings;
+	    }
+	    $sections{$name} .= $contents;
+	} else {
+	    $sections{$name} = $contents;
+	    push @sectionlist, $name;
+            $section_start_lines{$name} = $new_start_line;
+            $new_start_line = 0;
+	}
+    }
+}
+
+##
+# dump DOC: section after checking that it should go out
+#
+sub dump_doc_section {
+    my $file = shift;
+    my $name = shift;
+    my $contents = join "\n", @_;
+
+    if ($no_doc_sections) {
+        return;
+    }
+
+    if (($output_selection == OUTPUT_ALL) ||
+	($output_selection == OUTPUT_INCLUDE &&
+	 defined($function_table{$name})) ||
+	($output_selection == OUTPUT_EXCLUDE &&
+	 !defined($function_table{$name})))
+    {
+	dump_section($file, $name, $contents);
+	output_blockhead({'sectionlist' => \@sectionlist,
+			  'sections' => \%sections,
+			  'module' => $modulename,
+			  'content-only' => ($output_selection != OUTPUT_ALL), });
+    }
+}
+
+##
+# output function
+#
+# parameterdescs, a hash.
+#  function => "function name"
+#  parameterlist => @list of parameters
+#  parameterdescs => %parameter descriptions
+#  sectionlist => @list of sections
+#  sections => %section descriptions
+#
+
+sub output_highlight {
+    my $contents = join "\n",@_;
+    my $line;
+
+#   DEBUG
+#   if (!defined $contents) {
+#	use Carp;
+#	confess "output_highlight got called with no args?\n";
+#   }
+
+    if ($output_mode eq "html" || $output_mode eq "html5" ||
+	$output_mode eq "xml") {
+	$contents = local_unescape($contents);
+	# convert data read & converted thru xml_escape() into &xyz; format:
+	$contents =~ s/\\\\\\/\&/g;
+    }
+#   print STDERR "contents b4:$contents\n";
+    eval $dohighlight;
+    die $@ if $@;
+#   print STDERR "contents af:$contents\n";
+
+#   strip whitespaces when generating html5
+    if ($output_mode eq "html5") {
+	$contents =~ s/^\s+//;
+	$contents =~ s/\s+$//;
+    }
+    foreach $line (split "\n", $contents) {
+	if (! $output_preformatted) {
+	    $line =~ s/^\s*//;
+	}
+	if ($line eq ""){
+	    if (! $output_preformatted) {
+		print $lineprefix, local_unescape($blankline);
+	    }
+	} else {
+	    $line =~ s/\\\\\\/\&/g;
+	    if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
+		print "\\&$line";
+	    } else {
+		print $lineprefix, $line;
+	    }
+	}
+	print "\n";
+    }
+}
+
+# output sections in html
+sub output_section_html(%) {
+    my %args = %{$_[0]};
+    my $section;
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "<h3>$section</h3>\n";
+	print "<blockquote>\n";
+	output_highlight($args{'sections'}{$section});
+	print "</blockquote>\n";
+    }
+}
+
+# output enum in html
+sub output_enum_html(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $count;
+    print "<h2>enum " . $args{'enum'} . "</h2>\n";
+
+    print "<b>enum " . $args{'enum'} . "</b> {<br>\n";
+    $count = 0;
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print " <b>" . $parameter . "</b>";
+	if ($count != $#{$args{'parameterlist'}}) {
+	    $count++;
+	    print ",\n";
+	}
+	print "<br>";
+    }
+    print "};<br>\n";
+
+    print "<h3>Constants</h3>\n";
+    print "<dl>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "<dt><b>" . $parameter . "</b>\n";
+	print "<dd>";
+	output_highlight($args{'parameterdescs'}{$parameter});
+    }
+    print "</dl>\n";
+    output_section_html(@_);
+    print "<hr>\n";
+}
+
+# output typedef in html
+sub output_typedef_html(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $count;
+    print "<h2>typedef " . $args{'typedef'} . "</h2>\n";
+
+    print "<b>typedef " . $args{'typedef'} . "</b>\n";
+    output_section_html(@_);
+    print "<hr>\n";
+}
+
+# output struct in html
+sub output_struct_html(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+
+    print "<h2>" . $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "</h2>\n";
+    print "<b>" . $args{'type'} . " " . $args{'struct'} . "</b> {<br>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	if ($parameter =~ /^#/) {
+		print "$parameter<br>\n";
+		next;
+	}
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print "&nbsp; &nbsp; <i>$1</i><b>$parameter</b>) <i>($2)</i>;<br>\n";
+	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+	    # bitfield
+	    print "&nbsp; &nbsp; <i>$1</i> <b>$parameter</b>$2;<br>\n";
+	} else {
+	    print "&nbsp; &nbsp; <i>$type</i> <b>$parameter</b>;<br>\n";
+	}
+    }
+    print "};<br>\n";
+
+    print "<h3>Members</h3>\n";
+    print "<dl>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	($parameter =~ /^#/) && next;
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	print "<dt><b>" . $parameter . "</b>\n";
+	print "<dd>";
+	output_highlight($args{'parameterdescs'}{$parameter_name});
+    }
+    print "</dl>\n";
+    output_section_html(@_);
+    print "<hr>\n";
+}
+
+# output function in html
+sub output_function_html(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+
+    print "<h2>" . $args{'function'} . " - " . $args{'purpose'} . "</h2>\n";
+    print "<i>" . $args{'functiontype'} . "</i>\n";
+    print "<b>" . $args{'function'} . "</b>\n";
+    print "(";
+    $count = 0;
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print "<i>$1</i><b>$parameter</b>) <i>($2)</i>";
+	} else {
+	    print "<i>" . $type . "</i> <b>" . $parameter . "</b>";
+	}
+	if ($count != $#{$args{'parameterlist'}}) {
+	    $count++;
+	    print ",\n";
+	}
+    }
+    print ")\n";
+
+    print "<h3>Arguments</h3>\n";
+    print "<dl>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	print "<dt><b>" . $parameter . "</b>\n";
+	print "<dd>";
+	output_highlight($args{'parameterdescs'}{$parameter_name});
+    }
+    print "</dl>\n";
+    output_section_html(@_);
+    print "<hr>\n";
+}
+
+# output DOC: block header in html
+sub output_blockhead_html(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "<h3>$section</h3>\n";
+	print "<ul>\n";
+	output_highlight($args{'sections'}{$section});
+	print "</ul>\n";
+    }
+    print "<hr>\n";
+}
+
+# output sections in html5
+sub output_section_html5(%) {
+    my %args = %{$_[0]};
+    my $section;
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "<section>\n";
+	print "<h1>$section</h1>\n";
+	print "<p>\n";
+	output_highlight($args{'sections'}{$section});
+	print "</p>\n";
+	print "</section>\n";
+    }
+}
+
+# output enum in html5
+sub output_enum_html5(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $count;
+    my $html5id;
+
+    $html5id = $args{'enum'};
+    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
+    print "<article class=\"enum\" id=\"enum:". $html5id . "\">";
+    print "<h1>enum " . $args{'enum'} . "</h1>\n";
+    print "<ol class=\"code\">\n";
+    print "<li>";
+    print "<span class=\"keyword\">enum</span> ";
+    print "<span class=\"identifier\">" . $args{'enum'} . "</span> {";
+    print "</li>\n";
+    $count = 0;
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "<li class=\"indent\">";
+	print "<span class=\"param\">" . $parameter . "</span>";
+	if ($count != $#{$args{'parameterlist'}}) {
+	    $count++;
+	    print ",";
+	}
+	print "</li>\n";
+    }
+    print "<li>};</li>\n";
+    print "</ol>\n";
+
+    print "<section>\n";
+    print "<h1>Constants</h1>\n";
+    print "<dl>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "<dt>" . $parameter . "</dt>\n";
+	print "<dd>";
+	output_highlight($args{'parameterdescs'}{$parameter});
+	print "</dd>\n";
+    }
+    print "</dl>\n";
+    print "</section>\n";
+    output_section_html5(@_);
+    print "</article>\n";
+}
+
+# output typedef in html5
+sub output_typedef_html5(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $count;
+    my $html5id;
+
+    $html5id = $args{'typedef'};
+    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
+    print "<article class=\"typedef\" id=\"typedef:" . $html5id . "\">\n";
+    print "<h1>typedef " . $args{'typedef'} . "</h1>\n";
+
+    print "<ol class=\"code\">\n";
+    print "<li>";
+    print "<span class=\"keyword\">typedef</span> ";
+    print "<span class=\"identifier\">" . $args{'typedef'} . "</span>";
+    print "</li>\n";
+    print "</ol>\n";
+    output_section_html5(@_);
+    print "</article>\n";
+}
+
+# output struct in html5
+sub output_struct_html5(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $html5id;
+
+    $html5id = $args{'struct'};
+    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
+    print "<article class=\"struct\" id=\"struct:" . $html5id . "\">\n";
+    print "<hgroup>\n";
+    print "<h1>" . $args{'type'} . " " . $args{'struct'} . "</h1>";
+    print "<h2>". $args{'purpose'} . "</h2>\n";
+    print "</hgroup>\n";
+    print "<ol class=\"code\">\n";
+    print "<li>";
+    print "<span class=\"type\">" . $args{'type'} . "</span> ";
+    print "<span class=\"identifier\">" . $args{'struct'} . "</span> {";
+    print "</li>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "<li class=\"indent\">";
+	if ($parameter =~ /^#/) {
+		print "<span class=\"param\">" . $parameter ."</span>\n";
+		print "</li>\n";
+		next;
+	}
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print "<span class=\"type\">$1</span> ";
+	    print "<span class=\"param\">$parameter</span>";
+	    print "<span class=\"type\">)</span> ";
+	    print "(<span class=\"args\">$2</span>);";
+	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+	    # bitfield
+	    print "<span class=\"type\">$1</span> ";
+	    print "<span class=\"param\">$parameter</span>";
+	    print "<span class=\"bits\">$2</span>;";
+	} else {
+	    print "<span class=\"type\">$type</span> ";
+	    print "<span class=\"param\">$parameter</span>;";
+	}
+	print "</li>\n";
+    }
+    print "<li>};</li>\n";
+    print "</ol>\n";
+
+    print "<section>\n";
+    print "<h1>Members</h1>\n";
+    print "<dl>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	($parameter =~ /^#/) && next;
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	print "<dt>" . $parameter . "</dt>\n";
+	print "<dd>";
+	output_highlight($args{'parameterdescs'}{$parameter_name});
+	print "</dd>\n";
+    }
+    print "</dl>\n";
+    print "</section>\n";
+    output_section_html5(@_);
+    print "</article>\n";
+}
+
+# output function in html5
+sub output_function_html5(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+    my $html5id;
+
+    $html5id = $args{'function'};
+    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
+    print "<article class=\"function\" id=\"func:". $html5id . "\">\n";
+    print "<hgroup>\n";
+    print "<h1>" . $args{'function'} . "</h1>";
+    print "<h2>" . $args{'purpose'} . "</h2>\n";
+    print "</hgroup>\n";
+    print "<ol class=\"code\">\n";
+    print "<li>";
+    print "<span class=\"type\">" . $args{'functiontype'} . "</span> ";
+    print "<span class=\"identifier\">" . $args{'function'} . "</span> (";
+    print "</li>";
+    $count = 0;
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "<li class=\"indent\">";
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print "<span class=\"type\">$1</span> ";
+	    print "<span class=\"param\">$parameter</span>";
+	    print "<span class=\"type\">)</span> ";
+	    print "(<span class=\"args\">$2</span>)";
+	} else {
+	    print "<span class=\"type\">$type</span> ";
+	    print "<span class=\"param\">$parameter</span>";
+	}
+	if ($count != $#{$args{'parameterlist'}}) {
+	    $count++;
+	    print ",";
+	}
+	print "</li>\n";
+    }
+    print "<li>)</li>\n";
+    print "</ol>\n";
+
+    print "<section>\n";
+    print "<h1>Arguments</h1>\n";
+    print "<p>\n";
+    print "<dl>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	print "<dt>" . $parameter . "</dt>\n";
+	print "<dd>";
+	output_highlight($args{'parameterdescs'}{$parameter_name});
+	print "</dd>\n";
+    }
+    print "</dl>\n";
+    print "</section>\n";
+    output_section_html5(@_);
+    print "</article>\n";
+}
+
+# output DOC: block header in html5
+sub output_blockhead_html5(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+    my $html5id;
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	$html5id = $section;
+	$html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
+	print "<article class=\"doc\" id=\"doc:". $html5id . "\">\n";
+	print "<h1>$section</h1>\n";
+	print "<p>\n";
+	output_highlight($args{'sections'}{$section});
+	print "</p>\n";
+    }
+    print "</article>\n";
+}
+
+sub output_section_xml(%) {
+    my %args = %{$_[0]};
+    my $section;
+    # print out each section
+    $lineprefix="   ";
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "<refsect1>\n";
+	print "<title>$section</title>\n";
+	if ($section =~ m/EXAMPLE/i) {
+	    print "<informalexample><programlisting>\n";
+	    $output_preformatted = 1;
+	} else {
+	    print "<para>\n";
+	}
+	output_highlight($args{'sections'}{$section});
+	$output_preformatted = 0;
+	if ($section =~ m/EXAMPLE/i) {
+	    print "</programlisting></informalexample>\n";
+	} else {
+	    print "</para>\n";
+	}
+	print "</refsect1>\n";
+    }
+}
+
+# output function in XML DocBook
+sub output_function_xml(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+    my $id;
+
+    $id = "API-" . $args{'function'};
+    $id =~ s/[^A-Za-z0-9]/-/g;
+
+    print "<refentry id=\"$id\">\n";
+    print "<refentryinfo>\n";
+    print " <title>LINUX</title>\n";
+    print " <productname>Kernel Hackers Manual</productname>\n";
+    print " <date>$man_date</date>\n";
+    print "</refentryinfo>\n";
+    print "<refmeta>\n";
+    print " <refentrytitle><phrase>" . $args{'function'} . "</phrase></refentrytitle>\n";
+    print " <manvolnum>9</manvolnum>\n";
+    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
+    print "</refmeta>\n";
+    print "<refnamediv>\n";
+    print " <refname>" . $args{'function'} . "</refname>\n";
+    print " <refpurpose>\n";
+    print "  ";
+    output_highlight ($args{'purpose'});
+    print " </refpurpose>\n";
+    print "</refnamediv>\n";
+
+    print "<refsynopsisdiv>\n";
+    print " <title>Synopsis</title>\n";
+    print "  <funcsynopsis><funcprototype>\n";
+    print "   <funcdef>" . $args{'functiontype'} . " ";
+    print "<function>" . $args{'function'} . " </function></funcdef>\n";
+
+    $count = 0;
+    if ($#{$args{'parameterlist'}} >= 0) {
+	foreach $parameter (@{$args{'parameterlist'}}) {
+	    $type = $args{'parametertypes'}{$parameter};
+	    if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+		# pointer-to-function
+		print "   <paramdef>$1<parameter>$parameter</parameter>)\n";
+		print "     <funcparams>$2</funcparams></paramdef>\n";
+	    } else {
+		print "   <paramdef>" . $type;
+		print " <parameter>$parameter</parameter></paramdef>\n";
+	    }
+	}
+    } else {
+	print "  <void/>\n";
+    }
+    print "  </funcprototype></funcsynopsis>\n";
+    print "</refsynopsisdiv>\n";
+
+    # print parameters
+    print "<refsect1>\n <title>Arguments</title>\n";
+    if ($#{$args{'parameterlist'}} >= 0) {
+	print " <variablelist>\n";
+	foreach $parameter (@{$args{'parameterlist'}}) {
+	    my $parameter_name = $parameter;
+	    $parameter_name =~ s/\[.*//;
+	    $type = $args{'parametertypes'}{$parameter};
+
+	    print "  <varlistentry>\n   <term><parameter>$type $parameter</parameter></term>\n";
+	    print "   <listitem>\n    <para>\n";
+	    $lineprefix="     ";
+	    output_highlight($args{'parameterdescs'}{$parameter_name});
+	    print "    </para>\n   </listitem>\n  </varlistentry>\n";
+	}
+	print " </variablelist>\n";
+    } else {
+	print " <para>\n  None\n </para>\n";
+    }
+    print "</refsect1>\n";
+
+    output_section_xml(@_);
+    print "</refentry>\n\n";
+}
+
+# output struct in XML DocBook
+sub output_struct_xml(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $id;
+
+    $id = "API-struct-" . $args{'struct'};
+    $id =~ s/[^A-Za-z0-9]/-/g;
+
+    print "<refentry id=\"$id\">\n";
+    print "<refentryinfo>\n";
+    print " <title>LINUX</title>\n";
+    print " <productname>Kernel Hackers Manual</productname>\n";
+    print " <date>$man_date</date>\n";
+    print "</refentryinfo>\n";
+    print "<refmeta>\n";
+    print " <refentrytitle><phrase>" . $args{'type'} . " " . $args{'struct'} . "</phrase></refentrytitle>\n";
+    print " <manvolnum>9</manvolnum>\n";
+    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
+    print "</refmeta>\n";
+    print "<refnamediv>\n";
+    print " <refname>" . $args{'type'} . " " . $args{'struct'} . "</refname>\n";
+    print " <refpurpose>\n";
+    print "  ";
+    output_highlight ($args{'purpose'});
+    print " </refpurpose>\n";
+    print "</refnamediv>\n";
+
+    print "<refsynopsisdiv>\n";
+    print " <title>Synopsis</title>\n";
+    print "  <programlisting>\n";
+    print $args{'type'} . " " . $args{'struct'} . " {\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	if ($parameter =~ /^#/) {
+	    my $prm = $parameter;
+	    # convert data read & converted thru xml_escape() into &xyz; format:
+	    # This allows us to have #define macros interspersed in a struct.
+	    $prm =~ s/\\\\\\/\&/g;
+	    print "$prm\n";
+	    next;
+	}
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	defined($args{'parameterdescs'}{$parameter_name}) || next;
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print "  $1 $parameter) ($2);\n";
+	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+	    # bitfield
+	    print "  $1 $parameter$2;\n";
+	} else {
+	    print "  " . $type . " " . $parameter . ";\n";
+	}
+    }
+    print "};";
+    print "  </programlisting>\n";
+    print "</refsynopsisdiv>\n";
+
+    print " <refsect1>\n";
+    print "  <title>Members</title>\n";
+
+    if ($#{$args{'parameterlist'}} >= 0) {
+    print "  <variablelist>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+      ($parameter =~ /^#/) && next;
+
+      my $parameter_name = $parameter;
+      $parameter_name =~ s/\[.*//;
+
+      defined($args{'parameterdescs'}{$parameter_name}) || next;
+      ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+      $type = $args{'parametertypes'}{$parameter};
+      print "    <varlistentry>";
+      print "      <term><literal>$type $parameter</literal></term>\n";
+      print "      <listitem><para>\n";
+      output_highlight($args{'parameterdescs'}{$parameter_name});
+      print "      </para></listitem>\n";
+      print "    </varlistentry>\n";
+    }
+    print "  </variablelist>\n";
+    } else {
+	print " <para>\n  None\n </para>\n";
+    }
+    print " </refsect1>\n";
+
+    output_section_xml(@_);
+
+    print "</refentry>\n\n";
+}
+
+# output enum in XML DocBook
+sub output_enum_xml(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+    my $id;
+
+    $id = "API-enum-" . $args{'enum'};
+    $id =~ s/[^A-Za-z0-9]/-/g;
+
+    print "<refentry id=\"$id\">\n";
+    print "<refentryinfo>\n";
+    print " <title>LINUX</title>\n";
+    print " <productname>Kernel Hackers Manual</productname>\n";
+    print " <date>$man_date</date>\n";
+    print "</refentryinfo>\n";
+    print "<refmeta>\n";
+    print " <refentrytitle><phrase>enum " . $args{'enum'} . "</phrase></refentrytitle>\n";
+    print " <manvolnum>9</manvolnum>\n";
+    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
+    print "</refmeta>\n";
+    print "<refnamediv>\n";
+    print " <refname>enum " . $args{'enum'} . "</refname>\n";
+    print " <refpurpose>\n";
+    print "  ";
+    output_highlight ($args{'purpose'});
+    print " </refpurpose>\n";
+    print "</refnamediv>\n";
+
+    print "<refsynopsisdiv>\n";
+    print " <title>Synopsis</title>\n";
+    print "  <programlisting>\n";
+    print "enum " . $args{'enum'} . " {\n";
+    $count = 0;
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "  $parameter";
+	if ($count != $#{$args{'parameterlist'}}) {
+	    $count++;
+	    print ",";
+	}
+	print "\n";
+    }
+    print "};";
+    print "  </programlisting>\n";
+    print "</refsynopsisdiv>\n";
+
+    print "<refsect1>\n";
+    print " <title>Constants</title>\n";
+    print "  <variablelist>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+      my $parameter_name = $parameter;
+      $parameter_name =~ s/\[.*//;
+
+      print "    <varlistentry>";
+      print "      <term>$parameter</term>\n";
+      print "      <listitem><para>\n";
+      output_highlight($args{'parameterdescs'}{$parameter_name});
+      print "      </para></listitem>\n";
+      print "    </varlistentry>\n";
+    }
+    print "  </variablelist>\n";
+    print "</refsect1>\n";
+
+    output_section_xml(@_);
+
+    print "</refentry>\n\n";
+}
+
+# output typedef in XML DocBook
+sub output_typedef_xml(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $id;
+
+    $id = "API-typedef-" . $args{'typedef'};
+    $id =~ s/[^A-Za-z0-9]/-/g;
+
+    print "<refentry id=\"$id\">\n";
+    print "<refentryinfo>\n";
+    print " <title>LINUX</title>\n";
+    print " <productname>Kernel Hackers Manual</productname>\n";
+    print " <date>$man_date</date>\n";
+    print "</refentryinfo>\n";
+    print "<refmeta>\n";
+    print " <refentrytitle><phrase>typedef " . $args{'typedef'} . "</phrase></refentrytitle>\n";
+    print " <manvolnum>9</manvolnum>\n";
+    print "</refmeta>\n";
+    print "<refnamediv>\n";
+    print " <refname>typedef " . $args{'typedef'} . "</refname>\n";
+    print " <refpurpose>\n";
+    print "  ";
+    output_highlight ($args{'purpose'});
+    print " </refpurpose>\n";
+    print "</refnamediv>\n";
+
+    print "<refsynopsisdiv>\n";
+    print " <title>Synopsis</title>\n";
+    print "  <synopsis>typedef " . $args{'typedef'} . ";</synopsis>\n";
+    print "</refsynopsisdiv>\n";
+
+    output_section_xml(@_);
+
+    print "</refentry>\n\n";
+}
+
+# output in XML DocBook
+sub output_blockhead_xml(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+
+    my $id = $args{'module'};
+    $id =~ s/[^A-Za-z0-9]/-/g;
+
+    # print out each section
+    $lineprefix="   ";
+    foreach $section (@{$args{'sectionlist'}}) {
+	if (!$args{'content-only'}) {
+		print "<refsect1>\n <title>$section</title>\n";
+	}
+	if ($section =~ m/EXAMPLE/i) {
+	    print "<example><para>\n";
+	    $output_preformatted = 1;
+	} else {
+	    print "<para>\n";
+	}
+	output_highlight($args{'sections'}{$section});
+	$output_preformatted = 0;
+	if ($section =~ m/EXAMPLE/i) {
+	    print "</para></example>\n";
+	} else {
+	    print "</para>";
+	}
+	if (!$args{'content-only'}) {
+		print "\n</refsect1>\n";
+	}
+    }
+
+    print "\n\n";
+}
+
+# output in XML DocBook
+sub output_function_gnome {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+    my $id;
+
+    $id = $args{'module'} . "-" . $args{'function'};
+    $id =~ s/[^A-Za-z0-9]/-/g;
+
+    print "<sect2>\n";
+    print " <title id=\"$id\">" . $args{'function'} . "</title>\n";
+
+    print "  <funcsynopsis>\n";
+    print "   <funcdef>" . $args{'functiontype'} . " ";
+    print "<function>" . $args{'function'} . " ";
+    print "</function></funcdef>\n";
+
+    $count = 0;
+    if ($#{$args{'parameterlist'}} >= 0) {
+	foreach $parameter (@{$args{'parameterlist'}}) {
+	    $type = $args{'parametertypes'}{$parameter};
+	    if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+		# pointer-to-function
+		print "   <paramdef>$1 <parameter>$parameter</parameter>)\n";
+		print "     <funcparams>$2</funcparams></paramdef>\n";
+	    } else {
+		print "   <paramdef>" . $type;
+		print " <parameter>$parameter</parameter></paramdef>\n";
+	    }
+	}
+    } else {
+	print "  <void>\n";
+    }
+    print "  </funcsynopsis>\n";
+    if ($#{$args{'parameterlist'}} >= 0) {
+	print " <informaltable pgwide=\"1\" frame=\"none\" role=\"params\">\n";
+	print "<tgroup cols=\"2\">\n";
+	print "<colspec colwidth=\"2*\">\n";
+	print "<colspec colwidth=\"8*\">\n";
+	print "<tbody>\n";
+	foreach $parameter (@{$args{'parameterlist'}}) {
+	    my $parameter_name = $parameter;
+	    $parameter_name =~ s/\[.*//;
+
+	    print "  <row><entry align=\"right\"><parameter>$parameter</parameter></entry>\n";
+	    print "   <entry>\n";
+	    $lineprefix="     ";
+	    output_highlight($args{'parameterdescs'}{$parameter_name});
+	    print "    </entry></row>\n";
+	}
+	print " </tbody></tgroup></informaltable>\n";
+    } else {
+	print " <para>\n  None\n </para>\n";
+    }
+
+    # print out each section
+    $lineprefix="   ";
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "<simplesect>\n <title>$section</title>\n";
+	if ($section =~ m/EXAMPLE/i) {
+	    print "<example><programlisting>\n";
+	    $output_preformatted = 1;
+	} else {
+	}
+	print "<para>\n";
+	output_highlight($args{'sections'}{$section});
+	$output_preformatted = 0;
+	print "</para>\n";
+	if ($section =~ m/EXAMPLE/i) {
+	    print "</programlisting></example>\n";
+	} else {
+	}
+	print " </simplesect>\n";
+    }
+
+    print "</sect2>\n\n";
+}
+
+##
+# output function in man
+sub output_function_man(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+
+    print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
+
+    print ".SH NAME\n";
+    print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
+
+    print ".SH SYNOPSIS\n";
+    if ($args{'functiontype'} ne "") {
+	print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
+    } else {
+	print ".B \"" . $args{'function'} . "\n";
+    }
+    $count = 0;
+    my $parenth = "(";
+    my $post = ",";
+    foreach my $parameter (@{$args{'parameterlist'}}) {
+	if ($count == $#{$args{'parameterlist'}}) {
+	    $post = ");";
+	}
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
+	} else {
+	    $type =~ s/([^\*])$/$1 /;
+	    print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
+	}
+	$count++;
+	$parenth = "";
+    }
+
+    print ".SH ARGUMENTS\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	print ".IP \"" . $parameter . "\" 12\n";
+	output_highlight($args{'parameterdescs'}{$parameter_name});
+    }
+    foreach $section (@{$args{'sectionlist'}}) {
+	print ".SH \"", uc $section, "\"\n";
+	output_highlight($args{'sections'}{$section});
+    }
+}
+
+##
+# output enum in man
+sub output_enum_man(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+
+    print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
+
+    print ".SH NAME\n";
+    print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
+
+    print ".SH SYNOPSIS\n";
+    print "enum " . $args{'enum'} . " {\n";
+    $count = 0;
+    foreach my $parameter (@{$args{'parameterlist'}}) {
+	print ".br\n.BI \"    $parameter\"\n";
+	if ($count == $#{$args{'parameterlist'}}) {
+	    print "\n};\n";
+	    last;
+	}
+	else {
+	    print ", \n.br\n";
+	}
+	$count++;
+    }
+
+    print ".SH Constants\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	print ".IP \"" . $parameter . "\" 12\n";
+	output_highlight($args{'parameterdescs'}{$parameter_name});
+    }
+    foreach $section (@{$args{'sectionlist'}}) {
+	print ".SH \"$section\"\n";
+	output_highlight($args{'sections'}{$section});
+    }
+}
+
+##
+# output struct in man
+sub output_struct_man(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+
+    print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
+
+    print ".SH NAME\n";
+    print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
+
+    print ".SH SYNOPSIS\n";
+    print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
+
+    foreach my $parameter (@{$args{'parameterlist'}}) {
+	if ($parameter =~ /^#/) {
+	    print ".BI \"$parameter\"\n.br\n";
+	    next;
+	}
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print ".BI \"    " . $1 . "\" " . $parameter . " \") (" . $2 . ")" . "\"\n;\n";
+	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+	    # bitfield
+	    print ".BI \"    " . $1 . "\ \" " . $parameter . $2 . " \"" . "\"\n;\n";
+	} else {
+	    $type =~ s/([^\*])$/$1 /;
+	    print ".BI \"    " . $type . "\" " . $parameter . " \"" . "\"\n;\n";
+	}
+	print "\n.br\n";
+    }
+    print "};\n.br\n";
+
+    print ".SH Members\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	($parameter =~ /^#/) && next;
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	print ".IP \"" . $parameter . "\" 12\n";
+	output_highlight($args{'parameterdescs'}{$parameter_name});
+    }
+    foreach $section (@{$args{'sectionlist'}}) {
+	print ".SH \"$section\"\n";
+	output_highlight($args{'sections'}{$section});
+    }
+}
+
+##
+# output typedef in man
+sub output_typedef_man(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+
+    print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
+
+    print ".SH NAME\n";
+    print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print ".SH \"$section\"\n";
+	output_highlight($args{'sections'}{$section});
+    }
+}
+
+sub output_blockhead_man(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+
+    print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print ".SH \"$section\"\n";
+	output_highlight($args{'sections'}{$section});
+    }
+}
+
+##
+# output in text
+sub output_function_text(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $start;
+
+    print "Name:\n\n";
+    print $args{'function'} . " - " . $args{'purpose'} . "\n";
+
+    print "\nSynopsis:\n\n";
+    if ($args{'functiontype'} ne "") {
+	$start = $args{'functiontype'} . " " . $args{'function'} . " (";
+    } else {
+	$start = $args{'function'} . " (";
+    }
+    print $start;
+
+    my $count = 0;
+    foreach my $parameter (@{$args{'parameterlist'}}) {
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print $1 . $parameter . ") (" . $2;
+	} else {
+	    print $type . " " . $parameter;
+	}
+	if ($count != $#{$args{'parameterlist'}}) {
+	    $count++;
+	    print ",\n";
+	    print " " x length($start);
+	} else {
+	    print ");\n\n";
+	}
+    }
+
+    print "Arguments:\n\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	print $parameter . "\n\t" . $args{'parameterdescs'}{$parameter_name} . "\n";
+    }
+    output_section_text(@_);
+}
+
+#output sections in text
+sub output_section_text(%) {
+    my %args = %{$_[0]};
+    my $section;
+
+    print "\n";
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "$section:\n\n";
+	output_highlight($args{'sections'}{$section});
+    }
+    print "\n\n";
+}
+
+# output enum in text
+sub output_enum_text(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $count;
+    print "Enum:\n\n";
+
+    print "enum " . $args{'enum'} . " - " . $args{'purpose'} . "\n\n";
+    print "enum " . $args{'enum'} . " {\n";
+    $count = 0;
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "\t$parameter";
+	if ($count != $#{$args{'parameterlist'}}) {
+	    $count++;
+	    print ",";
+	}
+	print "\n";
+    }
+    print "};\n\n";
+
+    print "Constants:\n\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "$parameter\n\t";
+	print $args{'parameterdescs'}{$parameter} . "\n";
+    }
+
+    output_section_text(@_);
+}
+
+# output typedef in text
+sub output_typedef_text(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $count;
+    print "Typedef:\n\n";
+
+    print "typedef " . $args{'typedef'} . " - " . $args{'purpose'} . "\n";
+    output_section_text(@_);
+}
+
+# output struct as text
+sub output_struct_text(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+
+    print $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "\n\n";
+    print $args{'type'} . " " . $args{'struct'} . " {\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	if ($parameter =~ /^#/) {
+	    print "$parameter\n";
+	    next;
+	}
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print "\t$1 $parameter) ($2);\n";
+	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+	    # bitfield
+	    print "\t$1 $parameter$2;\n";
+	} else {
+	    print "\t" . $type . " " . $parameter . ";\n";
+	}
+    }
+    print "};\n\n";
+
+    print "Members:\n\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	($parameter =~ /^#/) && next;
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	print "$parameter\n\t";
+	print $args{'parameterdescs'}{$parameter_name} . "\n";
+    }
+    print "\n";
+    output_section_text(@_);
+}
+
+sub output_blockhead_text(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print " $section:\n";
+	print "    -> ";
+	output_highlight($args{'sections'}{$section});
+    }
+}
+
+##
+# output in restructured text
+#
+
+#
+# This could use some work; it's used to output the DOC: sections, and
+# starts by putting out the name of the doc section itself, but that tends
+# to duplicate a header already in the template file.
+#
+sub output_blockhead_rst(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	if ($output_selection != OUTPUT_INCLUDE) {
+	    print "**$section**\n\n";
+	}
+        print_lineno($section_start_lines{$section});
+	output_highlight_rst($args{'sections'}{$section});
+	print "\n";
+    }
+}
+
+sub output_highlight_rst {
+    my $contents = join "\n",@_;
+    my $line;
+
+    # undo the evil effects of xml_escape() earlier
+    $contents = xml_unescape($contents);
+
+    eval $dohighlight;
+    die $@ if $@;
+
+    foreach $line (split "\n", $contents) {
+	print $lineprefix . $line . "\n";
+    }
+}
+
+sub output_function_rst(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $oldprefix = $lineprefix;
+    my $start = "";
+
+    if ($args{'typedef'}) {
+	print ".. c:type:: ". $args{'function'} . "\n\n";
+	print_lineno($declaration_start_line);
+	print "   **Typedef**: ";
+	$lineprefix = "";
+	output_highlight_rst($args{'purpose'});
+	$start = "\n\n**Syntax**\n\n  ``";
+    } else {
+	print ".. c:function:: ";
+    }
+    if ($args{'functiontype'} ne "") {
+	$start .= $args{'functiontype'} . " " . $args{'function'} . " (";
+    } else {
+	$start .= $args{'function'} . " (";
+    }
+    print $start;
+
+    my $count = 0;
+    foreach my $parameter (@{$args{'parameterlist'}}) {
+	if ($count ne 0) {
+	    print ", ";
+	}
+	$count++;
+	$type = $args{'parametertypes'}{$parameter};
+
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print $1 . $parameter . ") (" . $2;
+	} else {
+	    print $type . " " . $parameter;
+	}
+    }
+    if ($args{'typedef'}) {
+	print ");``\n\n";
+    } else {
+	print ")\n\n";
+	print_lineno($declaration_start_line);
+	$lineprefix = "   ";
+	output_highlight_rst($args{'purpose'});
+	print "\n";
+    }
+
+    print "**Parameters**\n\n";
+    $lineprefix = "  ";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+	$type = $args{'parametertypes'}{$parameter};
+
+	if ($type ne "") {
+	    print "``$type $parameter``\n";
+	} else {
+	    print "``$parameter``\n";
+	}
+
+        print_lineno($parameterdesc_start_lines{$parameter_name});
+
+	if (defined($args{'parameterdescs'}{$parameter_name}) &&
+	    $args{'parameterdescs'}{$parameter_name} ne $undescribed) {
+	    output_highlight_rst($args{'parameterdescs'}{$parameter_name});
+	} else {
+	    print "  *undescribed*\n";
+	}
+	print "\n";
+    }
+
+    $lineprefix = $oldprefix;
+    output_section_rst(@_);
+}
+
+sub output_section_rst(%) {
+    my %args = %{$_[0]};
+    my $section;
+    my $oldprefix = $lineprefix;
+    $lineprefix = "";
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "**$section**\n\n";
+        print_lineno($section_start_lines{$section});
+	output_highlight_rst($args{'sections'}{$section});
+	print "\n";
+    }
+    print "\n";
+    $lineprefix = $oldprefix;
+}
+
+sub output_enum_rst(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $oldprefix = $lineprefix;
+    my $count;
+    my $name = "enum " . $args{'enum'};
+
+    print "\n\n.. c:type:: " . $name . "\n\n";
+    print_lineno($declaration_start_line);
+    $lineprefix = "   ";
+    output_highlight_rst($args{'purpose'});
+    print "\n";
+
+    print "**Constants**\n\n";
+    $lineprefix = "  ";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "``$parameter``\n";
+	if ($args{'parameterdescs'}{$parameter} ne $undescribed) {
+	    output_highlight_rst($args{'parameterdescs'}{$parameter});
+	} else {
+	    print "  *undescribed*\n";
+	}
+	print "\n";
+    }
+
+    $lineprefix = $oldprefix;
+    output_section_rst(@_);
+}
+
+sub output_typedef_rst(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $oldprefix = $lineprefix;
+    my $name = "typedef " . $args{'typedef'};
+
+    print "\n\n.. c:type:: " . $name . "\n\n";
+    print_lineno($declaration_start_line);
+    $lineprefix = "   ";
+    output_highlight_rst($args{'purpose'});
+    print "\n";
+
+    $lineprefix = $oldprefix;
+    output_section_rst(@_);
+}
+
+sub output_struct_rst(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $oldprefix = $lineprefix;
+    my $name = $args{'type'} . " " . $args{'struct'};
+
+    print "\n\n.. c:type:: " . $name . "\n\n";
+    print_lineno($declaration_start_line);
+    $lineprefix = "   ";
+    output_highlight_rst($args{'purpose'});
+    print "\n";
+
+    print "**Definition**\n\n";
+    print "::\n\n";
+    print "  " . $args{'type'} . " " . $args{'struct'} . " {\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	if ($parameter =~ /^#/) {
+	    print "  " . "$parameter\n";
+	    next;
+	}
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print "    $1 $parameter) ($2);\n";
+	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+	    # bitfield
+	    print "    $1 $parameter$2;\n";
+	} else {
+	    print "    " . $type . " " . $parameter . ";\n";
+	}
+    }
+    print "  };\n\n";
+
+    print "**Members**\n\n";
+    $lineprefix = "  ";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	($parameter =~ /^#/) && next;
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	$type = $args{'parametertypes'}{$parameter};
+        print_lineno($parameterdesc_start_lines{$parameter_name});
+	print "``" . $parameter . "``\n";
+	output_highlight_rst($args{'parameterdescs'}{$parameter_name});
+	print "\n";
+    }
+    print "\n";
+
+    $lineprefix = $oldprefix;
+    output_section_rst(@_);
+}
+
+
+## list mode output functions
+
+sub output_function_list(%) {
+    my %args = %{$_[0]};
+
+    print $args{'function'} . "\n";
+}
+
+# output enum in list
+sub output_enum_list(%) {
+    my %args = %{$_[0]};
+    print $args{'enum'} . "\n";
+}
+
+# output typedef in list
+sub output_typedef_list(%) {
+    my %args = %{$_[0]};
+    print $args{'typedef'} . "\n";
+}
+
+# output struct as list
+sub output_struct_list(%) {
+    my %args = %{$_[0]};
+
+    print $args{'struct'} . "\n";
+}
+
+sub output_blockhead_list(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "DOC: $section\n";
+    }
+}
+
+##
+# generic output function for all types (function, struct/union, typedef, enum);
+# calls the generated, variable output_ function name based on
+# functype and output_mode
+sub output_declaration {
+    no strict 'refs';
+    my $name = shift;
+    my $functype = shift;
+    my $func = "output_${functype}_$output_mode";
+    if (($output_selection == OUTPUT_ALL) ||
+	(($output_selection == OUTPUT_INCLUDE ||
+	  $output_selection == OUTPUT_EXPORTED) &&
+	 defined($function_table{$name})) ||
+	(($output_selection == OUTPUT_EXCLUDE ||
+	  $output_selection == OUTPUT_INTERNAL) &&
+	 !($functype eq "function" && defined($function_table{$name}))))
+    {
+	&$func(@_);
+	$section_counter++;
+    }
+}
+
+##
+# generic output function - calls the right one based on current output mode.
+sub output_blockhead {
+    no strict 'refs';
+    my $func = "output_blockhead_" . $output_mode;
+    &$func(@_);
+    $section_counter++;
+}
+
+##
+# takes a declaration (struct, union, enum, typedef) and
+# invokes the right handler. NOT called for functions.
+sub dump_declaration($$) {
+    no strict 'refs';
+    my ($prototype, $file) = @_;
+    my $func = "dump_" . $decl_type;
+    &$func(@_);
+}
+
+sub dump_union($$) {
+    dump_struct(@_);
+}
+
+sub dump_struct($$) {
+    my $x = shift;
+    my $file = shift;
+    my $nested;
+
+    if ($x =~ /(struct|union)\s+(\w+)\s*{(.*)}/) {
+	#my $decl_type = $1;
+	$declaration_name = $2;
+	my $members = $3;
+
+	# ignore embedded structs or unions
+	$members =~ s/({.*})//g;
+	$nested = $1;
+
+	# ignore members marked private:
+	$members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gosi;
+	$members =~ s/\/\*\s*private:.*//gosi;
+	# strip comments:
+	$members =~ s/\/\*.*?\*\///gos;
+	$nested =~ s/\/\*.*?\*\///gos;
+	# strip attributes
+	$members =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
+	$members =~ s/__aligned\s*\([^;]*\)//gos;
+	$members =~ s/\s*CRYPTO_MINALIGN_ATTR//gos;
+	# replace DECLARE_BITMAP
+	$members =~ s/DECLARE_BITMAP\s*\(([^,)]+), ([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
+	# replace DECLARE_HASHTABLE
+	$members =~ s/DECLARE_HASHTABLE\s*\(([^,)]+), ([^,)]+)\)/unsigned long $1\[1 << (($2) - 1)\]/gos;
+
+	create_parameterlist($members, ';', $file);
+	check_sections($file, $declaration_name, "struct", $sectcheck, $struct_actual, $nested);
+
+	output_declaration($declaration_name,
+			   'struct',
+			   {'struct' => $declaration_name,
+			    'module' => $modulename,
+			    'parameterlist' => \@parameterlist,
+			    'parameterdescs' => \%parameterdescs,
+			    'parametertypes' => \%parametertypes,
+			    'sectionlist' => \@sectionlist,
+			    'sections' => \%sections,
+			    'purpose' => $declaration_purpose,
+			    'type' => $decl_type
+			   });
+    }
+    else {
+	print STDERR "${file}:$.: error: Cannot parse struct or union!\n";
+	++$errors;
+    }
+}
+
+sub dump_enum($$) {
+    my $x = shift;
+    my $file = shift;
+
+    $x =~ s@/\*.*?\*/@@gos;	# strip comments.
+    # strip #define macros inside enums
+    $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos;
+
+    if ($x =~ /enum\s+(\w+)\s*{(.*)}/) {
+	$declaration_name = $1;
+	my $members = $2;
+	$members =~ s/\s+$//;
+
+	foreach my $arg (split ',', $members) {
+	    $arg =~ s/^\s*(\w+).*/$1/;
+	    push @parameterlist, $arg;
+	    if (!$parameterdescs{$arg}) {
+		$parameterdescs{$arg} = $undescribed;
+		print STDERR "${file}:$.: warning: Enum value '$arg' ".
+		    "not described in enum '$declaration_name'\n";
+	    }
+
+	}
+
+	output_declaration($declaration_name,
+			   'enum',
+			   {'enum' => $declaration_name,
+			    'module' => $modulename,
+			    'parameterlist' => \@parameterlist,
+			    'parameterdescs' => \%parameterdescs,
+			    'sectionlist' => \@sectionlist,
+			    'sections' => \%sections,
+			    'purpose' => $declaration_purpose
+			   });
+    }
+    else {
+	print STDERR "${file}:$.: error: Cannot parse enum!\n";
+	++$errors;
+    }
+}
+
+sub dump_typedef($$) {
+    my $x = shift;
+    my $file = shift;
+
+    $x =~ s@/\*.*?\*/@@gos;	# strip comments.
+
+    # Parse function prototypes
+    if ($x =~ /typedef\s+(\w+)\s*\(\*\s*(\w\S+)\s*\)\s*\((.*)\);/ ||
+	$x =~ /typedef\s+(\w+)\s*(\w\S+)\s*\s*\((.*)\);/) {
+
+	# Function typedefs
+	$return_type = $1;
+	$declaration_name = $2;
+	my $args = $3;
+
+	create_parameterlist($args, ',', $file);
+
+	output_declaration($declaration_name,
+			   'function',
+			   {'function' => $declaration_name,
+			    'typedef' => 1,
+			    'module' => $modulename,
+			    'functiontype' => $return_type,
+			    'parameterlist' => \@parameterlist,
+			    'parameterdescs' => \%parameterdescs,
+			    'parametertypes' => \%parametertypes,
+			    'sectionlist' => \@sectionlist,
+			    'sections' => \%sections,
+			    'purpose' => $declaration_purpose
+			   });
+	return;
+    }
+
+    while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
+	$x =~ s/\(*.\)\s*;$/;/;
+	$x =~ s/\[*.\]\s*;$/;/;
+    }
+
+    if ($x =~ /typedef.*\s+(\w+)\s*;/) {
+	$declaration_name = $1;
+
+	output_declaration($declaration_name,
+			   'typedef',
+			   {'typedef' => $declaration_name,
+			    'module' => $modulename,
+			    'sectionlist' => \@sectionlist,
+			    'sections' => \%sections,
+			    'purpose' => $declaration_purpose
+			   });
+    }
+    else {
+	print STDERR "${file}:$.: error: Cannot parse typedef!\n";
+	++$errors;
+    }
+}
+
+sub save_struct_actual($) {
+    my $actual = shift;
+
+    # strip all spaces from the actual param so that it looks like one string item
+    $actual =~ s/\s*//g;
+    $struct_actual = $struct_actual . $actual . " ";
+}
+
+sub create_parameterlist($$$) {
+    my $args = shift;
+    my $splitter = shift;
+    my $file = shift;
+    my $type;
+    my $param;
+
+    # temporarily replace commas inside function pointer definition
+    while ($args =~ /(\([^\),]+),/) {
+	$args =~ s/(\([^\),]+),/$1#/g;
+    }
+
+    foreach my $arg (split($splitter, $args)) {
+	# strip comments
+	$arg =~ s/\/\*.*\*\///;
+	# strip leading/trailing spaces
+	$arg =~ s/^\s*//;
+	$arg =~ s/\s*$//;
+	$arg =~ s/\s+/ /;
+
+	if ($arg =~ /^#/) {
+	    # Treat preprocessor directive as a typeless variable just to fill
+	    # corresponding data structures "correctly". Catch it later in
+	    # output_* subs.
+	    push_parameter($arg, "", $file);
+	} elsif ($arg =~ m/\(.+\)\s*\(/) {
+	    # pointer-to-function
+	    $arg =~ tr/#/,/;
+	    $arg =~ m/[^\(]+\(\*?\s*(\w*)\s*\)/;
+	    $param = $1;
+	    $type = $arg;
+	    $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
+	    save_struct_actual($param);
+	    push_parameter($param, $type, $file);
+	} elsif ($arg) {
+	    $arg =~ s/\s*:\s*/:/g;
+	    $arg =~ s/\s*\[/\[/g;
+
+	    my @args = split('\s*,\s*', $arg);
+	    if ($args[0] =~ m/\*/) {
+		$args[0] =~ s/(\*+)\s*/ $1/;
+	    }
+
+	    my @first_arg;
+	    if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
+		    shift @args;
+		    push(@first_arg, split('\s+', $1));
+		    push(@first_arg, $2);
+	    } else {
+		    @first_arg = split('\s+', shift @args);
+	    }
+
+	    unshift(@args, pop @first_arg);
+	    $type = join " ", @first_arg;
+
+	    foreach $param (@args) {
+		if ($param =~ m/^(\*+)\s*(.*)/) {
+		    save_struct_actual($2);
+		    push_parameter($2, "$type $1", $file);
+		}
+		elsif ($param =~ m/(.*?):(\d+)/) {
+		    if ($type ne "") { # skip unnamed bit-fields
+			save_struct_actual($1);
+			push_parameter($1, "$type:$2", $file)
+		    }
+		}
+		else {
+		    save_struct_actual($param);
+		    push_parameter($param, $type, $file);
+		}
+	    }
+	}
+    }
+}
+
+sub push_parameter($$$) {
+	my $param = shift;
+	my $type = shift;
+	my $file = shift;
+
+	if (($anon_struct_union == 1) && ($type eq "") &&
+	    ($param eq "}")) {
+		return;		# ignore the ending }; from anon. struct/union
+	}
+
+	$anon_struct_union = 0;
+	$param =~ s/[\[\)].*//;
+
+	if ($type eq "" && $param =~ /\.\.\.$/)
+	{
+	    if (!$param =~ /\w\.\.\.$/) {
+	      # handles unnamed variable parameters
+	      $param = "...";
+	    }
+	    if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
+		$parameterdescs{$param} = "variable arguments";
+	    }
+	}
+	elsif ($type eq "" && ($param eq "" or $param eq "void"))
+	{
+	    $param="void";
+	    $parameterdescs{void} = "no arguments";
+	}
+	elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
+	# handle unnamed (anonymous) union or struct:
+	{
+		$type = $param;
+		$param = "{unnamed_" . $param . "}";
+		$parameterdescs{$param} = "anonymous\n";
+		$anon_struct_union = 1;
+	}
+
+	# warn if parameter has no description
+	# (but ignore ones starting with # as these are not parameters
+	# but inline preprocessor statements);
+	# also ignore unnamed structs/unions;
+	if (!$anon_struct_union) {
+	if (!defined $parameterdescs{$param} && $param !~ /^#/) {
+
+	    $parameterdescs{$param} = $undescribed;
+
+	    if (($type eq 'function') || ($type eq 'enum')) {
+		print STDERR "${file}:$.: warning: Function parameter ".
+		    "or member '$param' not " .
+		    "described in '$declaration_name'\n";
+	    }
+	    print STDERR "${file}:$.: warning:" .
+			 " No description found for parameter '$param'\n";
+	    ++$warnings;
+	}
+	}
+
+	$param = xml_escape($param);
+
+	# strip spaces from $param so that it is one continuous string
+	# on @parameterlist;
+	# this fixes a problem where check_sections() cannot find
+	# a parameter like "addr[6 + 2]" because it actually appears
+	# as "addr[6", "+", "2]" on the parameter list;
+	# but it's better to maintain the param string unchanged for output,
+	# so just weaken the string compare in check_sections() to ignore
+	# "[blah" in a parameter string;
+	###$param =~ s/\s*//g;
+	push @parameterlist, $param;
+	$type =~ s/\s\s+/ /g;
+	$parametertypes{$param} = $type;
+}
+
+sub check_sections($$$$$$) {
+	my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck, $nested) = @_;
+	my @sects = split ' ', $sectcheck;
+	my @prms = split ' ', $prmscheck;
+	my $err;
+	my ($px, $sx);
+	my $prm_clean;		# strip trailing "[array size]" and/or beginning "*"
+
+	foreach $sx (0 .. $#sects) {
+		$err = 1;
+		foreach $px (0 .. $#prms) {
+			$prm_clean = $prms[$px];
+			$prm_clean =~ s/\[.*\]//;
+			$prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
+			# ignore array size in a parameter string;
+			# however, the original param string may contain
+			# spaces, e.g.:  addr[6 + 2]
+			# and this appears in @prms as "addr[6" since the
+			# parameter list is split at spaces;
+			# hence just ignore "[..." for the sections check;
+			$prm_clean =~ s/\[.*//;
+
+			##$prm_clean =~ s/^\**//;
+			if ($prm_clean eq $sects[$sx]) {
+				$err = 0;
+				last;
+			}
+		}
+		if ($err) {
+			if ($decl_type eq "function") {
+				print STDERR "${file}:$.: warning: " .
+					"Excess function parameter " .
+					"'$sects[$sx]' " .
+					"description in '$decl_name'\n";
+				++$warnings;
+			} else {
+				if ($nested !~ m/\Q$sects[$sx]\E/) {
+				    print STDERR "${file}:$.: warning: " .
+					"Excess struct/union/enum/typedef member " .
+					"'$sects[$sx]' " .
+					"description in '$decl_name'\n";
+				    ++$warnings;
+				}
+			}
+		}
+	}
+}
+
+##
+# Checks the section describing the return value of a function.
+sub check_return_section {
+        my $file = shift;
+        my $declaration_name = shift;
+        my $return_type = shift;
+
+        # Ignore an empty return type (It's a macro)
+        # Ignore functions with a "void" return type. (But don't ignore "void *")
+        if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) {
+                return;
+        }
+
+        if (!defined($sections{$section_return}) ||
+            $sections{$section_return} eq "") {
+                print STDERR "${file}:$.: warning: " .
+                        "No description found for return value of " .
+                        "'$declaration_name'\n";
+                ++$warnings;
+        }
+}
+
+##
+# takes a function prototype and the name of the current file being
+# processed and spits out all the details stored in the global
+# arrays/hashes.
+sub dump_function($$) {
+    my $prototype = shift;
+    my $file = shift;
+    my $noret = 0;
+
+    $prototype =~ s/^static +//;
+    $prototype =~ s/^extern +//;
+    $prototype =~ s/^asmlinkage +//;
+    $prototype =~ s/^inline +//;
+    $prototype =~ s/^__inline__ +//;
+    $prototype =~ s/^__inline +//;
+    $prototype =~ s/^__always_inline +//;
+    $prototype =~ s/^noinline +//;
+    $prototype =~ s/__init +//;
+    $prototype =~ s/__init_or_module +//;
+    $prototype =~ s/__meminit +//;
+    $prototype =~ s/__must_check +//;
+    $prototype =~ s/__weak +//;
+    my $define = $prototype =~ s/^#\s*define\s+//; #ak added
+    $prototype =~ s/__attribute__\s*\(\(
+            (?:
+                 [\w\s]++          # attribute name
+                 (?:\([^)]*+\))?   # attribute arguments
+                 \s*+,?            # optional comma at the end
+            )+
+          \)\)\s+//x;
+
+    # Yes, this truly is vile.  We are looking for:
+    # 1. Return type (may be nothing if we're looking at a macro)
+    # 2. Function name
+    # 3. Function parameters.
+    #
+    # All the while we have to watch out for function pointer parameters
+    # (which IIRC is what the two sections are for), C types (these
+    # regexps don't even start to express all the possibilities), and
+    # so on.
+    #
+    # If you mess with these regexps, it's a good idea to check that
+    # the following functions' documentation still comes out right:
+    # - parport_register_device (function pointer parameters)
+    # - atomic_set (macro)
+    # - pci_match_device, __copy_to_user (long return type)
+
+    if ($define && $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s+/) {
+        # This is an object-like macro, it has no return type and no parameter
+        # list.
+        # Function-like macros are not allowed to have spaces between
+        # declaration_name and opening parenthesis (notice the \s+).
+        $return_type = $1;
+        $declaration_name = $2;
+        $noret = 1;
+    } elsif ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+	$prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+	$prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s*\*+\s*\w+\s*\*+\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/)  {
+	$return_type = $1;
+	$declaration_name = $2;
+	my $args = $3;
+
+	create_parameterlist($args, ',', $file);
+    } else {
+	print STDERR "${file}:$.: warning: cannot understand function prototype: '$prototype'\n";
+	return;
+    }
+
+	my $prms = join " ", @parameterlist;
+	check_sections($file, $declaration_name, "function", $sectcheck, $prms, "");
+
+        # This check emits a lot of warnings at the moment, because many
+        # functions don't have a 'Return' doc section. So until the number
+        # of warnings goes sufficiently down, the check is only performed in
+        # verbose mode.
+        # TODO: always perform the check.
+        if ($verbose && !$noret) {
+                check_return_section($file, $declaration_name, $return_type);
+        }
+
+    output_declaration($declaration_name,
+		       'function',
+		       {'function' => $declaration_name,
+			'module' => $modulename,
+			'functiontype' => $return_type,
+			'parameterlist' => \@parameterlist,
+			'parameterdescs' => \%parameterdescs,
+			'parametertypes' => \%parametertypes,
+			'sectionlist' => \@sectionlist,
+			'sections' => \%sections,
+			'purpose' => $declaration_purpose
+		       });
+}
+
+sub reset_state {
+    $function = "";
+    %parameterdescs = ();
+    %parametertypes = ();
+    @parameterlist = ();
+    %sections = ();
+    @sectionlist = ();
+    $sectcheck = "";
+    $struct_actual = "";
+    $prototype = "";
+
+    $state = STATE_NORMAL;
+    $inline_doc_state = STATE_INLINE_NA;
+}
+
+sub tracepoint_munge($) {
+	my $file = shift;
+	my $tracepointname = 0;
+	my $tracepointargs = 0;
+
+	if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
+		$tracepointname = $1;
+	}
+	if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
+		$tracepointname = $1;
+	}
+	if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
+		$tracepointname = $2;
+	}
+	$tracepointname =~ s/^\s+//; #strip leading whitespace
+	if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
+		$tracepointargs = $1;
+	}
+	if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
+		print STDERR "${file}:$.: warning: Unrecognized tracepoint format: \n".
+			     "$prototype\n";
+	} else {
+		$prototype = "static inline void trace_$tracepointname($tracepointargs)";
+	}
+}
+
+sub syscall_munge() {
+	my $void = 0;
+
+	$prototype =~ s@[\r\n\t]+@ @gos; # strip newlines/CR's/tabs
+##	if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
+	if ($prototype =~ m/SYSCALL_DEFINE0/) {
+		$void = 1;
+##		$prototype = "long sys_$1(void)";
+	}
+
+	$prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
+	if ($prototype =~ m/long (sys_.*?),/) {
+		$prototype =~ s/,/\(/;
+	} elsif ($void) {
+		$prototype =~ s/\)/\(void\)/;
+	}
+
+	# now delete all of the odd-number commas in $prototype
+	# so that arg types & arg names don't have a comma between them
+	my $count = 0;
+	my $len = length($prototype);
+	if ($void) {
+		$len = 0;	# skip the for-loop
+	}
+	for (my $ix = 0; $ix < $len; $ix++) {
+		if (substr($prototype, $ix, 1) eq ',') {
+			$count++;
+			if ($count % 2 == 1) {
+				substr($prototype, $ix, 1) = ' ';
+			}
+		}
+	}
+}
+
+sub process_proto_function($$) {
+    my $x = shift;
+    my $file = shift;
+
+    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
+
+    if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
+	# do nothing
+    }
+    elsif ($x =~ /([^\{]*)/) {
+	$prototype .= $1;
+    }
+
+    if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
+	$prototype =~ s@/\*.*?\*/@@gos;	# strip comments.
+	$prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
+	$prototype =~ s@^\s+@@gos; # strip leading spaces
+	if ($prototype =~ /SYSCALL_DEFINE/) {
+		syscall_munge();
+	}
+	if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
+	    $prototype =~ /DEFINE_SINGLE_EVENT/)
+	{
+		tracepoint_munge($file);
+	}
+	dump_function($prototype, $file);
+	reset_state();
+    }
+}
+
+sub process_proto_type($$) {
+    my $x = shift;
+    my $file = shift;
+
+    $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
+    $x =~ s@^\s+@@gos; # strip leading spaces
+    $x =~ s@\s+$@@gos; # strip trailing spaces
+    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
+
+    if ($x =~ /^#/) {
+	# To distinguish preprocessor directive from regular declaration later.
+	$x .= ";";
+    }
+
+    while (1) {
+	if ( $x =~ /([^{};]*)([{};])(.*)/ ) {
+            if( length $prototype ) {
+                $prototype .= " "
+            }
+	    $prototype .= $1 . $2;
+	    ($2 eq '{') && $brcount++;
+	    ($2 eq '}') && $brcount--;
+	    if (($2 eq ';') && ($brcount == 0)) {
+		dump_declaration($prototype, $file);
+		reset_state();
+		last;
+	    }
+	    $x = $3;
+	} else {
+	    $prototype .= $x;
+	    last;
+	}
+    }
+}
+
+# xml_escape: replace <, >, and & in the text stream;
+#
+# however, formatting controls that are generated internally/locally in the
+# kernel-doc script are not escaped here; instead, they begin life like
+# $blankline_html (4 of '\' followed by a mnemonic + ':'), then these strings
+# are converted to their mnemonic-expected output, without the 4 * '\' & ':',
+# just before actual output; (this is done by local_unescape())
+sub xml_escape($) {
+	my $text = shift;
+	if (($output_mode eq "text") || ($output_mode eq "man")) {
+		return $text;
+	}
+	$text =~ s/\&/\\\\\\amp;/g;
+	$text =~ s/\</\\\\\\lt;/g;
+	$text =~ s/\>/\\\\\\gt;/g;
+	return $text;
+}
+
+# xml_unescape: reverse the effects of xml_escape
+sub xml_unescape($) {
+	my $text = shift;
+	if (($output_mode eq "text") || ($output_mode eq "man")) {
+		return $text;
+	}
+	$text =~ s/\\\\\\amp;/\&/g;
+	$text =~ s/\\\\\\lt;/</g;
+	$text =~ s/\\\\\\gt;/>/g;
+	return $text;
+}
+
+# convert local escape strings to html
+# local escape strings look like:  '\\\\menmonic:' (that's 4 backslashes)
+sub local_unescape($) {
+	my $text = shift;
+	if (($output_mode eq "text") || ($output_mode eq "man")) {
+		return $text;
+	}
+	$text =~ s/\\\\\\\\lt:/</g;
+	$text =~ s/\\\\\\\\gt:/>/g;
+	return $text;
+}
+
+sub map_filename($) {
+    my $file;
+    my ($orig_file) = @_;
+
+    if (defined($ENV{'SRCTREE'})) {
+	$file = "$ENV{'SRCTREE'}" . "/" . $orig_file;
+    } else {
+	$file = $orig_file;
+    }
+
+    if (defined($source_map{$file})) {
+	$file = $source_map{$file};
+    }
+
+    return $file;
+}
+
+sub process_export_file($) {
+    my ($orig_file) = @_;
+    my $file = map_filename($orig_file);
+
+    if (!open(IN,"<$file")) {
+	print STDERR "Error: Cannot open file $file\n";
+	++$errors;
+	return;
+    }
+
+    while (<IN>) {
+	if (/$export_symbol/) {
+	    $function_table{$2} = 1;
+	}
+    }
+
+    close(IN);
+}
+
+sub process_file($) {
+    my $file;
+    my $identifier;
+    my $func;
+    my $descr;
+    my $in_purpose = 0;
+    my $initial_section_counter = $section_counter;
+    my ($orig_file) = @_;
+    my $leading_space;
+
+    $file = map_filename($orig_file);
+
+    if (!open(IN,"<$file")) {
+	print STDERR "Error: Cannot open file $file\n";
+	++$errors;
+	return;
+    }
+
+    $. = 1;
+
+    $section_counter = 0;
+    while (<IN>) {
+	while (s/\\\s*$//) {
+	    $_ .= <IN>;
+	}
+	if ($state == STATE_NORMAL) {
+	    if (/$doc_start/o) {
+		$state = STATE_NAME;	# next line is always the function name
+		$in_doc_sect = 0;
+		$declaration_start_line = $. + 1;
+	    }
+	} elsif ($state == STATE_NAME) {# this line is the function name (always)
+	    if (/$doc_block/o) {
+		$state = STATE_DOCBLOCK;
+		$contents = "";
+                $new_start_line = $. + 1;
+
+		if ( $1 eq "" ) {
+			$section = $section_intro;
+		} else {
+			$section = $1;
+		}
+	    }
+	    elsif (/$doc_decl/o) {
+		$identifier = $1;
+		if (/\s*([\w\s]+?)\s*-/) {
+		    $identifier = $1;
+		}
+
+		$state = STATE_FIELD;
+		# if there's no @param blocks need to set up default section
+		# here
+		$contents = "";
+		$section = $section_default;
+		$new_start_line = $. + 1;
+		if (/-(.*)/) {
+		    # strip leading/trailing/multiple spaces
+		    $descr= $1;
+		    $descr =~ s/^\s*//;
+		    $descr =~ s/\s*$//;
+		    $descr =~ s/\s+/ /g;
+		    $declaration_purpose = xml_escape($descr);
+		    $in_purpose = 1;
+		} else {
+		    $declaration_purpose = "";
+		}
+
+		if (($declaration_purpose eq "") && $verbose) {
+			print STDERR "${file}:$.: warning: missing initial short description on line:\n";
+			print STDERR $_;
+			++$warnings;
+		}
+
+		if ($identifier =~ m/^struct/) {
+		    $decl_type = 'struct';
+		} elsif ($identifier =~ m/^union/) {
+		    $decl_type = 'union';
+		} elsif ($identifier =~ m/^enum/) {
+		    $decl_type = 'enum';
+		} elsif ($identifier =~ m/^typedef/) {
+		    $decl_type = 'typedef';
+		} else {
+		    $decl_type = 'function';
+		}
+
+		if ($verbose) {
+		    print STDERR "${file}:$.: info: Scanning doc for $identifier\n";
+		}
+	    } else {
+		print STDERR "${file}:$.: warning: Cannot understand $_ on line $.",
+		" - I thought it was a doc line\n";
+		++$warnings;
+		$state = STATE_NORMAL;
+	    }
+	} elsif ($state == STATE_FIELD) {	# look for head: lines, and include content
+	    if (/$doc_sect/i) { # case insensitive for supported section names
+		$newsection = $1;
+		$newcontents = $2;
+
+		# map the supported section names to the canonical names
+		if ($newsection =~ m/^description$/i) {
+		    $newsection = $section_default;
+		} elsif ($newsection =~ m/^context$/i) {
+		    $newsection = $section_context;
+		} elsif ($newsection =~ m/^returns?$/i) {
+		    $newsection = $section_return;
+		} elsif ($newsection =~ m/^\@return$/) {
+		    # special: @return is a section, not a param description
+		    $newsection = $section_return;
+		}
+
+		if (($contents ne "") && ($contents ne "\n")) {
+		    if (!$in_doc_sect && $verbose) {
+			print STDERR "${file}:$.: warning: contents before sections\n";
+			++$warnings;
+		    }
+		    dump_section($file, $section, xml_escape($contents));
+		    $section = $section_default;
+		}
+
+		$in_doc_sect = 1;
+		$in_purpose = 0;
+		$contents = $newcontents;
+                $new_start_line = $.;
+		while ((substr($contents, 0, 1) eq " ") ||
+		       substr($contents, 0, 1) eq "\t") {
+		    $contents = substr($contents, 1);
+		}
+		if ($contents ne "") {
+		    $contents .= "\n";
+		}
+		$section = $newsection;
+		$leading_space = undef;
+	    } elsif (/$doc_end/) {
+		if (($contents ne "") && ($contents ne "\n")) {
+		    dump_section($file, $section, xml_escape($contents));
+		    $section = $section_default;
+		    $contents = "";
+		}
+		# look for doc_com + <text> + doc_end:
+		if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
+		    print STDERR "${file}:$.: warning: suspicious ending line: $_";
+		    ++$warnings;
+		}
+
+		$prototype = "";
+		$state = STATE_PROTO;
+		$brcount = 0;
+#		print STDERR "end of doc comment, looking for prototype\n";
+	    } elsif (/$doc_content/) {
+		# miguel-style comment kludge, look for blank lines after
+		# @parameter line to signify start of description
+		if ($1 eq "") {
+		    if ($section =~ m/^@/ || $section eq $section_context) {
+			dump_section($file, $section, xml_escape($contents));
+			$section = $section_default;
+			$contents = "";
+                        $new_start_line = $.;
+		    } else {
+			$contents .= "\n";
+		    }
+		    $in_purpose = 0;
+		} elsif ($in_purpose == 1) {
+		    # Continued declaration purpose
+		    chomp($declaration_purpose);
+		    $declaration_purpose .= " " . xml_escape($1);
+		    $declaration_purpose =~ s/\s+/ /g;
+		} else {
+		    my $cont = $1;
+		    if ($section =~ m/^@/ || $section eq $section_context) {
+			if (!defined $leading_space) {
+			    if ($cont =~ m/^(\s+)/) {
+				$leading_space = $1;
+			    } else {
+				$leading_space = "";
+			    }
+			}
+
+			$cont =~ s/^$leading_space//;
+		    }
+		    $contents .= $cont . "\n";
+		}
+	    } else {
+		# i dont know - bad line?  ignore.
+		print STDERR "${file}:$.: warning: bad line: $_";
+		++$warnings;
+	    }
+	} elsif ($state == STATE_INLINE) { # scanning for inline parameters
+	    # First line (state 1) needs to be a @parameter
+	    if ($inline_doc_state == STATE_INLINE_NAME && /$doc_inline_sect/o) {
+		$section = $1;
+		$contents = $2;
+                $new_start_line = $.;
+		if ($contents ne "") {
+		    while ((substr($contents, 0, 1) eq " ") ||
+		           substr($contents, 0, 1) eq "\t") {
+			$contents = substr($contents, 1);
+		    }
+		    $contents .= "\n";
+		}
+		$inline_doc_state = STATE_INLINE_TEXT;
+	    # Documentation block end */
+	    } elsif (/$doc_inline_end/) {
+		if (($contents ne "") && ($contents ne "\n")) {
+		    dump_section($file, $section, xml_escape($contents));
+		    $section = $section_default;
+		    $contents = "";
+		}
+		$state = STATE_PROTO;
+		$inline_doc_state = STATE_INLINE_NA;
+	    # Regular text
+	    } elsif (/$doc_content/) {
+		if ($inline_doc_state == STATE_INLINE_TEXT) {
+		    $contents .= $1 . "\n";
+		    # nuke leading blank lines
+		    if ($contents =~ /^\s*$/) {
+			$contents = "";
+		    }
+		} elsif ($inline_doc_state == STATE_INLINE_NAME) {
+		    $inline_doc_state = STATE_INLINE_ERROR;
+		    print STDERR "${file}:$.: warning: ";
+		    print STDERR "Incorrect use of kernel-doc format: $_";
+		    ++$warnings;
+		}
+	    }
+	} elsif ($state == STATE_PROTO) {	# scanning for function '{' (end of prototype)
+	    if (/$doc_inline_oneline/) {
+		$section = $1;
+		$contents = $2;
+		if ($contents ne "") {
+		    $contents .= "\n";
+		    dump_section($file, $section, xml_escape($contents));
+		    $section = $section_default;
+		    $contents = "";
+		}
+	    } elsif (/$doc_inline_start/) {
+		$state = STATE_INLINE;
+		$inline_doc_state = STATE_INLINE_NAME;
+	    } elsif ($decl_type eq 'function') {
+		process_proto_function($_, $file);
+	    } else {
+		process_proto_type($_, $file);
+	    }
+	} elsif ($state == STATE_DOCBLOCK) {
+		if (/$doc_end/)
+		{
+			dump_doc_section($file, $section, xml_escape($contents));
+			$section = $section_default;
+			$contents = "";
+			$function = "";
+			%parameterdescs = ();
+			%parametertypes = ();
+			@parameterlist = ();
+			%sections = ();
+			@sectionlist = ();
+			$prototype = "";
+			$state = STATE_NORMAL;
+		}
+		elsif (/$doc_content/)
+		{
+			if ( $1 eq "" )
+			{
+				$contents .= $blankline;
+			}
+			else
+			{
+				$contents .= $1 . "\n";
+			}
+		}
+	}
+    }
+    if ($initial_section_counter == $section_counter) {
+	print STDERR "${file}:1: warning: no structured comments found\n";
+	if (($output_selection == OUTPUT_INCLUDE) && ($show_not_found == 1)) {
+	    print STDERR "    Was looking for '$_'.\n" for keys %function_table;
+	}
+	if ($output_mode eq "xml") {
+	    # The template wants at least one RefEntry here; make one.
+	    print "<refentry>\n";
+	    print " <refnamediv>\n";
+	    print "  <refname>\n";
+	    print "   ${orig_file}\n";
+	    print "  </refname>\n";
+	    print "  <refpurpose>\n";
+	    print "   Document generation inconsistency\n";
+	    print "  </refpurpose>\n";
+	    print " </refnamediv>\n";
+	    print " <refsect1>\n";
+	    print "  <title>\n";
+	    print "   Oops\n";
+	    print "  </title>\n";
+	    print "  <warning>\n";
+	    print "   <para>\n";
+	    print "    The template for this document tried to insert\n";
+	    print "    the structured comment from the file\n";
+	    print "    <filename>${orig_file}</filename> at this point,\n";
+	    print "    but none was found.\n";
+	    print "    This dummy section is inserted to allow\n";
+	    print "    generation to continue.\n";
+	    print "   </para>\n";
+	    print "  </warning>\n";
+	    print " </refsect1>\n";
+	    print "</refentry>\n";
+	}
+    }
+}
+
+
+$kernelversion = get_kernel_version();
+
+# generate a sequence of code that will splice in highlighting information
+# using the s// operator.
+for (my $k = 0; $k < @highlights; $k++) {
+    my $pattern = $highlights[$k][0];
+    my $result = $highlights[$k][1];
+#   print STDERR "scanning pattern:$pattern, highlight:($result)\n";
+    $dohighlight .=  "\$contents =~ s:$pattern:$result:gs;\n";
+}
+
+# Read the file that maps relative names to absolute names for
+# separate source and object directories and for shadow trees.
+if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
+	my ($relname, $absname);
+	while(<SOURCE_MAP>) {
+		chop();
+		($relname, $absname) = (split())[0..1];
+		$relname =~ s:^/+::;
+		$source_map{$relname} = $absname;
+	}
+	close(SOURCE_MAP);
+}
+
+if ($output_selection == OUTPUT_EXPORTED ||
+    $output_selection == OUTPUT_INTERNAL) {
+
+    push(@export_file_list, @ARGV);
+
+    foreach (@export_file_list) {
+	chomp;
+	process_export_file($_);
+    }
+}
+
+foreach (@ARGV) {
+    chomp;
+    process_file($_);
+}
+if ($verbose && $errors) {
+  print STDERR "$errors errors\n";
+}
+if ($verbose && $warnings) {
+  print STDERR "$warnings warnings\n";
+}
+
+exit($output_mode eq "none" ? 0 : $errors);