xref: /openbmc/linux/scripts/kernel-doc (revision d2168146) 
1#!/usr/bin/perl -w
2
3use strict;
4
5## Copyright (c) 1998 Michael Zucchi, All Rights Reserved        ##
6## Copyright (C) 2000, 1  Tim Waugh <twaugh@redhat.com>          ##
7## Copyright (C) 2001  Simon Huggins                             ##
8## Copyright (C) 2005-2012  Randy Dunlap                         ##
9## Copyright (C) 2012  Dan Luedtke                               ##
10## 								 ##
11## #define enhancements by Armin Kuster <akuster@mvista.com>	 ##
12## Copyright (c) 2000 MontaVista Software, Inc.			 ##
13## 								 ##
14## This software falls under the GNU General Public License.     ##
15## Please read the COPYING file for more information             ##
16
17# 18/01/2001 - 	Cleanups
18# 		Functions prototyped as foo(void) same as foo()
19# 		Stop eval'ing where we don't need to.
20# -- huggie@earth.li
21
22# 27/06/2001 -  Allowed whitespace after initial "/**" and
23#               allowed comments before function declarations.
24# -- Christian Kreibich <ck@whoop.org>
25
26# Still to do:
27# 	- add perldoc documentation
28# 	- Look more closely at some of the scarier bits :)
29
30# 26/05/2001 - 	Support for separate source and object trees.
31#		Return error code.
32# 		Keith Owens <kaos@ocs.com.au>
33
34# 23/09/2001 - Added support for typedefs, structs, enums and unions
35#              Support for Context section; can be terminated using empty line
36#              Small fixes (like spaces vs. \s in regex)
37# -- Tim Jansen <tim@tjansen.de>
38
39# 25/07/2012 - Added support for HTML5
40# -- Dan Luedtke <mail@danrl.de>
41
42#
43# This will read a 'c' file and scan for embedded comments in the
44# style of gnome comments (+minor extensions - see below).
45#
46
47# Note: This only supports 'c'.
48
49# usage:
50# kernel-doc [ -docbook | -html | -html5 | -text | -man | -list ]
51#            [ -no-doc-sections ]
52#            [ -function funcname [ -function funcname ...] ]
53#            c file(s)s > outputfile
54# or
55#            [ -nofunction funcname [ -function funcname ...] ]
56#            c file(s)s > outputfile
57#
58#  Set output format using one of -docbook -html -html5 -text or -man.
59#  Default is man.
60#  The -list format is for internal use by docproc.
61#
62#  -no-doc-sections
63#	Do not output DOC: sections
64#
65#  -function funcname
66#	If set, then only generate documentation for the given function(s) or
67#	DOC: section titles.  All other functions and DOC: sections are ignored.
68#
69#  -nofunction funcname
70#	If set, then only generate documentation for the other function(s)/DOC:
71#	sections. Cannot be used together with -function (yes, that's a bug --
72#	perl hackers can fix it 8))
73#
74#  c files - list of 'c' files to process
75#
76#  All output goes to stdout, with errors to stderr.
77
78#
79# format of comments.
80# In the following table, (...)? signifies optional structure.
81#                         (...)* signifies 0 or more structure elements
82# /**
83#  * function_name(:)? (- short description)?
84# (* @parameterx: (description of parameter x)?)*
85# (* a blank line)?
86#  * (Description:)? (Description of function)?
87#  * (section header: (section description)? )*
88#  (*)?*/
89#
90# So .. the trivial example would be:
91#
92# /**
93#  * my_function
94#  */
95#
96# If the Description: header tag is omitted, then there must be a blank line
97# after the last parameter specification.
98# e.g.
99# /**
100#  * my_function - does my stuff
101#  * @my_arg: its mine damnit
102#  *
103#  * Does my stuff explained.
104#  */
105#
106#  or, could also use:
107# /**
108#  * my_function - does my stuff
109#  * @my_arg: its mine damnit
110#  * Description: Does my stuff explained.
111#  */
112# etc.
113#
114# Besides functions you can also write documentation for structs, unions,
115# enums and typedefs. Instead of the function name you must write the name
116# of the declaration;  the struct/union/enum/typedef must always precede
117# the name. Nesting of declarations is not supported.
118# Use the argument mechanism to document members or constants.
119# e.g.
120# /**
121#  * struct my_struct - short description
122#  * @a: first member
123#  * @b: second member
124#  *
125#  * Longer description
126#  */
127# struct my_struct {
128#     int a;
129#     int b;
130# /* private: */
131#     int c;
132# };
133#
134# All descriptions can be multiline, except the short function description.
135#
136# You can also add additional sections. When documenting kernel functions you
137# should document the "Context:" of the function, e.g. whether the functions
138# can be called form interrupts. Unlike other sections you can end it with an
139# empty line.
140# A non-void function should have a "Return:" section describing the return
141# value(s).
142# Example-sections should contain the string EXAMPLE so that they are marked
143# appropriately in DocBook.
144#
145# Example:
146# /**
147#  * user_function - function that can only be called in user context
148#  * @a: some argument
149#  * Context: !in_interrupt()
150#  *
151#  * Some description
152#  * Example:
153#  *    user_function(22);
154#  */
155# ...
156#
157#
158# All descriptive text is further processed, scanning for the following special
159# patterns, which are highlighted appropriately.
160#
161# 'funcname()' - function
162# '$ENVVAR' - environmental variable
163# '&struct_name' - name of a structure (up to two words including 'struct')
164# '@parameter' - name of a parameter
165# '%CONST' - name of a constant.
166
167## init lots of data
168
169my $errors = 0;
170my $warnings = 0;
171my $anon_struct_union = 0;
172
173# match expressions used to find embedded type information
174my $type_constant = '\%([-_\w]+)';
175my $type_func = '(\w+)\(\)';
176my $type_param = '\@(\w+)';
177my $type_struct = '\&((struct\s*)*[_\w]+)';
178my $type_struct_xml = '\\&amp;((struct\s*)*[_\w]+)';
179my $type_env = '(\$\w+)';
180
181# Output conversion substitutions.
182#  One for each output format
183
184# these work fairly well
185my %highlights_html = ( $type_constant, "<i>\$1</i>",
186			$type_func, "<b>\$1</b>",
187			$type_struct_xml, "<i>\$1</i>",
188			$type_env, "<b><i>\$1</i></b>",
189			$type_param, "<tt><b>\$1</b></tt>" );
190my $local_lt = "\\\\\\\\lt:";
191my $local_gt = "\\\\\\\\gt:";
192my $blankline_html = $local_lt . "p" . $local_gt;	# was "<p>"
193
194# html version 5
195my %highlights_html5 = ( $type_constant, "<span class=\"const\">\$1</span>",
196			$type_func, "<span class=\"func\">\$1</span>",
197			$type_struct_xml, "<span class=\"struct\">\$1</span>",
198			$type_env, "<span class=\"env\">\$1</span>",
199			$type_param, "<span class=\"param\">\$1</span>" );
200my $blankline_html5 = $local_lt . "br /" . $local_gt;
201
202# XML, docbook format
203my %highlights_xml = ( "([^=])\\\"([^\\\"<]+)\\\"", "\$1<quote>\$2</quote>",
204			$type_constant, "<constant>\$1</constant>",
205			$type_func, "<function>\$1</function>",
206			$type_struct_xml, "<structname>\$1</structname>",
207			$type_env, "<envar>\$1</envar>",
208			$type_param, "<parameter>\$1</parameter>" );
209my $blankline_xml = $local_lt . "/para" . $local_gt . $local_lt . "para" . $local_gt . "\n";
210
211# gnome, docbook format
212my %highlights_gnome = ( $type_constant, "<replaceable class=\"option\">\$1</replaceable>",
213			 $type_func, "<function>\$1</function>",
214			 $type_struct, "<structname>\$1</structname>",
215			 $type_env, "<envar>\$1</envar>",
216			 $type_param, "<parameter>\$1</parameter>" );
217my $blankline_gnome = "</para><para>\n";
218
219# these are pretty rough
220my %highlights_man = ( $type_constant, "\$1",
221		       $type_func, "\\\\fB\$1\\\\fP",
222		       $type_struct, "\\\\fI\$1\\\\fP",
223		       $type_param, "\\\\fI\$1\\\\fP" );
224my $blankline_man = "";
225
226# text-mode
227my %highlights_text = ( $type_constant, "\$1",
228			$type_func, "\$1",
229			$type_struct, "\$1",
230			$type_param, "\$1" );
231my $blankline_text = "";
232
233# list mode
234my %highlights_list = ( $type_constant, "\$1",
235			$type_func, "\$1",
236			$type_struct, "\$1",
237			$type_param, "\$1" );
238my $blankline_list = "";
239
240# read arguments
241if ($#ARGV == -1) {
242    usage();
243}
244
245my $kernelversion;
246my $dohighlight = "";
247
248my $verbose = 0;
249my $output_mode = "man";
250my $output_preformatted = 0;
251my $no_doc_sections = 0;
252my %highlights = %highlights_man;
253my $blankline = $blankline_man;
254my $modulename = "Kernel API";
255my $function_only = 0;
256my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
257		'July', 'August', 'September', 'October',
258		'November', 'December')[(localtime)[4]] .
259  " " . ((localtime)[5]+1900);
260my $show_not_found = 0;
261
262# Essentially these are globals.
263# They probably want to be tidied up, made more localised or something.
264# CAVEAT EMPTOR!  Some of the others I localised may not want to be, which
265# could cause "use of undefined value" or other bugs.
266my ($function, %function_table, %parametertypes, $declaration_purpose);
267my ($type, $declaration_name, $return_type);
268my ($newsection, $newcontents, $prototype, $brcount, %source_map);
269
270if (defined($ENV{'KBUILD_VERBOSE'})) {
271	$verbose = "$ENV{'KBUILD_VERBOSE'}";
272}
273
274# Generated docbook code is inserted in a template at a point where
275# docbook v3.1 requires a non-zero sequence of RefEntry's; see:
276# http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
277# We keep track of number of generated entries and generate a dummy
278# if needs be to ensure the expanded template can be postprocessed
279# into html.
280my $section_counter = 0;
281
282my $lineprefix="";
283
284# states
285# 0 - normal code
286# 1 - looking for function name
287# 2 - scanning field start.
288# 3 - scanning prototype.
289# 4 - documentation block
290my $state;
291my $in_doc_sect;
292
293#declaration types: can be
294# 'function', 'struct', 'union', 'enum', 'typedef'
295my $decl_type;
296
297my $doc_special = "\@\%\$\&";
298
299my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
300my $doc_end = '\*/';
301my $doc_com = '\s*\*\s*';
302my $doc_com_body = '\s*\* ?';
303my $doc_decl = $doc_com . '(\w+)';
304my $doc_sect = $doc_com . '([' . $doc_special . ']?[\w\s]+):(.*)';
305my $doc_content = $doc_com_body . '(.*)';
306my $doc_block = $doc_com . 'DOC:\s*(.*)?';
307
308my %constants;
309my %parameterdescs;
310my @parameterlist;
311my %sections;
312my @sectionlist;
313my $sectcheck;
314my $struct_actual;
315
316my $contents = "";
317my $section_default = "Description";	# default section
318my $section_intro = "Introduction";
319my $section = $section_default;
320my $section_context = "Context";
321my $section_return = "Return";
322
323my $undescribed = "-- undescribed --";
324
325reset_state();
326
327while ($ARGV[0] =~ m/^-(.*)/) {
328    my $cmd = shift @ARGV;
329    if ($cmd eq "-html") {
330	$output_mode = "html";
331	%highlights = %highlights_html;
332	$blankline = $blankline_html;
333    } elsif ($cmd eq "-html5") {
334	$output_mode = "html5";
335	%highlights = %highlights_html5;
336	$blankline = $blankline_html5;
337    } elsif ($cmd eq "-man") {
338	$output_mode = "man";
339	%highlights = %highlights_man;
340	$blankline = $blankline_man;
341    } elsif ($cmd eq "-text") {
342	$output_mode = "text";
343	%highlights = %highlights_text;
344	$blankline = $blankline_text;
345    } elsif ($cmd eq "-docbook") {
346	$output_mode = "xml";
347	%highlights = %highlights_xml;
348	$blankline = $blankline_xml;
349    } elsif ($cmd eq "-list") {
350	$output_mode = "list";
351	%highlights = %highlights_list;
352	$blankline = $blankline_list;
353    } elsif ($cmd eq "-gnome") {
354	$output_mode = "gnome";
355	%highlights = %highlights_gnome;
356	$blankline = $blankline_gnome;
357    } elsif ($cmd eq "-module") { # not needed for XML, inherits from calling document
358	$modulename = shift @ARGV;
359    } elsif ($cmd eq "-function") { # to only output specific functions
360	$function_only = 1;
361	$function = shift @ARGV;
362	$function_table{$function} = 1;
363    } elsif ($cmd eq "-nofunction") { # to only output specific functions
364	$function_only = 2;
365	$function = shift @ARGV;
366	$function_table{$function} = 1;
367    } elsif ($cmd eq "-v") {
368	$verbose = 1;
369    } elsif (($cmd eq "-h") || ($cmd eq "--help")) {
370	usage();
371    } elsif ($cmd eq '-no-doc-sections') {
372	    $no_doc_sections = 1;
373    } elsif ($cmd eq '-show-not-found') {
374	$show_not_found = 1;
375    }
376}
377
378# continue execution near EOF;
379
380sub usage {
381    print "Usage: $0 [ -docbook | -html | -html5 | -text | -man | -list ]\n";
382    print "         [ -no-doc-sections ]\n";
383    print "         [ -function funcname [ -function funcname ...] ]\n";
384    print "         [ -nofunction funcname [ -nofunction funcname ...] ]\n";
385    print "         [ -v ]\n";
386    print "         c source file(s) > outputfile\n";
387    print "         -v : verbose output, more warnings & other info listed\n";
388    exit 1;
389}
390
391# get kernel version from env
392sub get_kernel_version() {
393    my $version = 'unknown kernel version';
394
395    if (defined($ENV{'KERNELVERSION'})) {
396	$version = $ENV{'KERNELVERSION'};
397    }
398    return $version;
399}
400
401##
402# dumps section contents to arrays/hashes intended for that purpose.
403#
404sub dump_section {
405    my $file = shift;
406    my $name = shift;
407    my $contents = join "\n", @_;
408
409    if ($name =~ m/$type_constant/) {
410	$name = $1;
411#	print STDERR "constant section '$1' = '$contents'\n";
412	$constants{$name} = $contents;
413    } elsif ($name =~ m/$type_param/) {
414#	print STDERR "parameter def '$1' = '$contents'\n";
415	$name = $1;
416	$parameterdescs{$name} = $contents;
417	$sectcheck = $sectcheck . $name . " ";
418    } elsif ($name eq "@\.\.\.") {
419#	print STDERR "parameter def '...' = '$contents'\n";
420	$name = "...";
421	$parameterdescs{$name} = $contents;
422	$sectcheck = $sectcheck . $name . " ";
423    } else {
424#	print STDERR "other section '$name' = '$contents'\n";
425	if (defined($sections{$name}) && ($sections{$name} ne "")) {
426		print STDERR "Error(${file}:$.): duplicate section name '$name'\n";
427		++$errors;
428	}
429	$sections{$name} = $contents;
430	push @sectionlist, $name;
431    }
432}
433
434##
435# dump DOC: section after checking that it should go out
436#
437sub dump_doc_section {
438    my $file = shift;
439    my $name = shift;
440    my $contents = join "\n", @_;
441
442    if ($no_doc_sections) {
443        return;
444    }
445
446    if (($function_only == 0) ||
447	( $function_only == 1 && defined($function_table{$name})) ||
448	( $function_only == 2 && !defined($function_table{$name})))
449    {
450	dump_section($file, $name, $contents);
451	output_blockhead({'sectionlist' => \@sectionlist,
452			  'sections' => \%sections,
453			  'module' => $modulename,
454			  'content-only' => ($function_only != 0), });
455    }
456}
457
458##
459# output function
460#
461# parameterdescs, a hash.
462#  function => "function name"
463#  parameterlist => @list of parameters
464#  parameterdescs => %parameter descriptions
465#  sectionlist => @list of sections
466#  sections => %section descriptions
467#
468
469sub output_highlight {
470    my $contents = join "\n",@_;
471    my $line;
472
473#   DEBUG
474#   if (!defined $contents) {
475#	use Carp;
476#	confess "output_highlight got called with no args?\n";
477#   }
478
479    if ($output_mode eq "html" || $output_mode eq "html5" ||
480	$output_mode eq "xml") {
481	$contents = local_unescape($contents);
482	# convert data read & converted thru xml_escape() into &xyz; format:
483	$contents =~ s/\\\\\\/\&/g;
484    }
485#   print STDERR "contents b4:$contents\n";
486    eval $dohighlight;
487    die $@ if $@;
488#   print STDERR "contents af:$contents\n";
489
490#   strip whitespaces when generating html5
491    if ($output_mode eq "html5") {
492	$contents =~ s/^\s+//;
493	$contents =~ s/\s+$//;
494    }
495    foreach $line (split "\n", $contents) {
496	if (! $output_preformatted) {
497	    $line =~ s/^\s*//;
498	}
499	if ($line eq ""){
500	    if (! $output_preformatted) {
501		print $lineprefix, local_unescape($blankline);
502	    }
503	} else {
504	    $line =~ s/\\\\\\/\&/g;
505	    if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
506		print "\\&$line";
507	    } else {
508		print $lineprefix, $line;
509	    }
510	}
511	print "\n";
512    }
513}
514
515# output sections in html
516sub output_section_html(%) {
517    my %args = %{$_[0]};
518    my $section;
519
520    foreach $section (@{$args{'sectionlist'}}) {
521	print "<h3>$section</h3>\n";
522	print "<blockquote>\n";
523	output_highlight($args{'sections'}{$section});
524	print "</blockquote>\n";
525    }
526}
527
528# output enum in html
529sub output_enum_html(%) {
530    my %args = %{$_[0]};
531    my ($parameter);
532    my $count;
533    print "<h2>enum " . $args{'enum'} . "</h2>\n";
534
535    print "<b>enum " . $args{'enum'} . "</b> {<br>\n";
536    $count = 0;
537    foreach $parameter (@{$args{'parameterlist'}}) {
538	print " <b>" . $parameter . "</b>";
539	if ($count != $#{$args{'parameterlist'}}) {
540	    $count++;
541	    print ",\n";
542	}
543	print "<br>";
544    }
545    print "};<br>\n";
546
547    print "<h3>Constants</h3>\n";
548    print "<dl>\n";
549    foreach $parameter (@{$args{'parameterlist'}}) {
550	print "<dt><b>" . $parameter . "</b>\n";
551	print "<dd>";
552	output_highlight($args{'parameterdescs'}{$parameter});
553    }
554    print "</dl>\n";
555    output_section_html(@_);
556    print "<hr>\n";
557}
558
559# output typedef in html
560sub output_typedef_html(%) {
561    my %args = %{$_[0]};
562    my ($parameter);
563    my $count;
564    print "<h2>typedef " . $args{'typedef'} . "</h2>\n";
565
566    print "<b>typedef " . $args{'typedef'} . "</b>\n";
567    output_section_html(@_);
568    print "<hr>\n";
569}
570
571# output struct in html
572sub output_struct_html(%) {
573    my %args = %{$_[0]};
574    my ($parameter);
575
576    print "<h2>" . $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "</h2>\n";
577    print "<b>" . $args{'type'} . " " . $args{'struct'} . "</b> {<br>\n";
578    foreach $parameter (@{$args{'parameterlist'}}) {
579	if ($parameter =~ /^#/) {
580		print "$parameter<br>\n";
581		next;
582	}
583	my $parameter_name = $parameter;
584	$parameter_name =~ s/\[.*//;
585
586	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
587	$type = $args{'parametertypes'}{$parameter};
588	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
589	    # pointer-to-function
590	    print "&nbsp; &nbsp; <i>$1</i><b>$parameter</b>) <i>($2)</i>;<br>\n";
591	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
592	    # bitfield
593	    print "&nbsp; &nbsp; <i>$1</i> <b>$parameter</b>$2;<br>\n";
594	} else {
595	    print "&nbsp; &nbsp; <i>$type</i> <b>$parameter</b>;<br>\n";
596	}
597    }
598    print "};<br>\n";
599
600    print "<h3>Members</h3>\n";
601    print "<dl>\n";
602    foreach $parameter (@{$args{'parameterlist'}}) {
603	($parameter =~ /^#/) && next;
604
605	my $parameter_name = $parameter;
606	$parameter_name =~ s/\[.*//;
607
608	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
609	print "<dt><b>" . $parameter . "</b>\n";
610	print "<dd>";
611	output_highlight($args{'parameterdescs'}{$parameter_name});
612    }
613    print "</dl>\n";
614    output_section_html(@_);
615    print "<hr>\n";
616}
617
618# output function in html
619sub output_function_html(%) {
620    my %args = %{$_[0]};
621    my ($parameter, $section);
622    my $count;
623
624    print "<h2>" . $args{'function'} . " - " . $args{'purpose'} . "</h2>\n";
625    print "<i>" . $args{'functiontype'} . "</i>\n";
626    print "<b>" . $args{'function'} . "</b>\n";
627    print "(";
628    $count = 0;
629    foreach $parameter (@{$args{'parameterlist'}}) {
630	$type = $args{'parametertypes'}{$parameter};
631	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
632	    # pointer-to-function
633	    print "<i>$1</i><b>$parameter</b>) <i>($2)</i>";
634	} else {
635	    print "<i>" . $type . "</i> <b>" . $parameter . "</b>";
636	}
637	if ($count != $#{$args{'parameterlist'}}) {
638	    $count++;
639	    print ",\n";
640	}
641    }
642    print ")\n";
643
644    print "<h3>Arguments</h3>\n";
645    print "<dl>\n";
646    foreach $parameter (@{$args{'parameterlist'}}) {
647	my $parameter_name = $parameter;
648	$parameter_name =~ s/\[.*//;
649
650	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
651	print "<dt><b>" . $parameter . "</b>\n";
652	print "<dd>";
653	output_highlight($args{'parameterdescs'}{$parameter_name});
654    }
655    print "</dl>\n";
656    output_section_html(@_);
657    print "<hr>\n";
658}
659
660# output DOC: block header in html
661sub output_blockhead_html(%) {
662    my %args = %{$_[0]};
663    my ($parameter, $section);
664    my $count;
665
666    foreach $section (@{$args{'sectionlist'}}) {
667	print "<h3>$section</h3>\n";
668	print "<ul>\n";
669	output_highlight($args{'sections'}{$section});
670	print "</ul>\n";
671    }
672    print "<hr>\n";
673}
674
675# output sections in html5
676sub output_section_html5(%) {
677    my %args = %{$_[0]};
678    my $section;
679
680    foreach $section (@{$args{'sectionlist'}}) {
681	print "<section>\n";
682	print "<h1>$section</h1>\n";
683	print "<p>\n";
684	output_highlight($args{'sections'}{$section});
685	print "</p>\n";
686	print "</section>\n";
687    }
688}
689
690# output enum in html5
691sub output_enum_html5(%) {
692    my %args = %{$_[0]};
693    my ($parameter);
694    my $count;
695    my $html5id;
696
697    $html5id = $args{'enum'};
698    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
699    print "<article class=\"enum\" id=\"enum:". $html5id . "\">";
700    print "<h1>enum " . $args{'enum'} . "</h1>\n";
701    print "<ol class=\"code\">\n";
702    print "<li>";
703    print "<span class=\"keyword\">enum</span> ";
704    print "<span class=\"identifier\">" . $args{'enum'} . "</span> {";
705    print "</li>\n";
706    $count = 0;
707    foreach $parameter (@{$args{'parameterlist'}}) {
708	print "<li class=\"indent\">";
709	print "<span class=\"param\">" . $parameter . "</span>";
710	if ($count != $#{$args{'parameterlist'}}) {
711	    $count++;
712	    print ",";
713	}
714	print "</li>\n";
715    }
716    print "<li>};</li>\n";
717    print "</ol>\n";
718
719    print "<section>\n";
720    print "<h1>Constants</h1>\n";
721    print "<dl>\n";
722    foreach $parameter (@{$args{'parameterlist'}}) {
723	print "<dt>" . $parameter . "</dt>\n";
724	print "<dd>";
725	output_highlight($args{'parameterdescs'}{$parameter});
726	print "</dd>\n";
727    }
728    print "</dl>\n";
729    print "</section>\n";
730    output_section_html5(@_);
731    print "</article>\n";
732}
733
734# output typedef in html5
735sub output_typedef_html5(%) {
736    my %args = %{$_[0]};
737    my ($parameter);
738    my $count;
739    my $html5id;
740
741    $html5id = $args{'typedef'};
742    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
743    print "<article class=\"typedef\" id=\"typedef:" . $html5id . "\">\n";
744    print "<h1>typedef " . $args{'typedef'} . "</h1>\n";
745
746    print "<ol class=\"code\">\n";
747    print "<li>";
748    print "<span class=\"keyword\">typedef</span> ";
749    print "<span class=\"identifier\">" . $args{'typedef'} . "</span>";
750    print "</li>\n";
751    print "</ol>\n";
752    output_section_html5(@_);
753    print "</article>\n";
754}
755
756# output struct in html5
757sub output_struct_html5(%) {
758    my %args = %{$_[0]};
759    my ($parameter);
760    my $html5id;
761
762    $html5id = $args{'struct'};
763    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
764    print "<article class=\"struct\" id=\"struct:" . $html5id . "\">\n";
765    print "<hgroup>\n";
766    print "<h1>" . $args{'type'} . " " . $args{'struct'} . "</h1>";
767    print "<h2>". $args{'purpose'} . "</h2>\n";
768    print "</hgroup>\n";
769    print "<ol class=\"code\">\n";
770    print "<li>";
771    print "<span class=\"type\">" . $args{'type'} . "</span> ";
772    print "<span class=\"identifier\">" . $args{'struct'} . "</span> {";
773    print "</li>\n";
774    foreach $parameter (@{$args{'parameterlist'}}) {
775	print "<li class=\"indent\">";
776	if ($parameter =~ /^#/) {
777		print "<span class=\"param\">" . $parameter ."</span>\n";
778		print "</li>\n";
779		next;
780	}
781	my $parameter_name = $parameter;
782	$parameter_name =~ s/\[.*//;
783
784	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
785	$type = $args{'parametertypes'}{$parameter};
786	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
787	    # pointer-to-function
788	    print "<span class=\"type\">$1</span> ";
789	    print "<span class=\"param\">$parameter</span>";
790	    print "<span class=\"type\">)</span> ";
791	    print "(<span class=\"args\">$2</span>);";
792	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
793	    # bitfield
794	    print "<span class=\"type\">$1</span> ";
795	    print "<span class=\"param\">$parameter</span>";
796	    print "<span class=\"bits\">$2</span>;";
797	} else {
798	    print "<span class=\"type\">$type</span> ";
799	    print "<span class=\"param\">$parameter</span>;";
800	}
801	print "</li>\n";
802    }
803    print "<li>};</li>\n";
804    print "</ol>\n";
805
806    print "<section>\n";
807    print "<h1>Members</h1>\n";
808    print "<dl>\n";
809    foreach $parameter (@{$args{'parameterlist'}}) {
810	($parameter =~ /^#/) && next;
811
812	my $parameter_name = $parameter;
813	$parameter_name =~ s/\[.*//;
814
815	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
816	print "<dt>" . $parameter . "</dt>\n";
817	print "<dd>";
818	output_highlight($args{'parameterdescs'}{$parameter_name});
819	print "</dd>\n";
820    }
821    print "</dl>\n";
822    print "</section>\n";
823    output_section_html5(@_);
824    print "</article>\n";
825}
826
827# output function in html5
828sub output_function_html5(%) {
829    my %args = %{$_[0]};
830    my ($parameter, $section);
831    my $count;
832    my $html5id;
833
834    $html5id = $args{'function'};
835    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
836    print "<article class=\"function\" id=\"func:". $html5id . "\">\n";
837    print "<hgroup>\n";
838    print "<h1>" . $args{'function'} . "</h1>";
839    print "<h2>" . $args{'purpose'} . "</h2>\n";
840    print "</hgroup>\n";
841    print "<ol class=\"code\">\n";
842    print "<li>";
843    print "<span class=\"type\">" . $args{'functiontype'} . "</span> ";
844    print "<span class=\"identifier\">" . $args{'function'} . "</span> (";
845    print "</li>";
846    $count = 0;
847    foreach $parameter (@{$args{'parameterlist'}}) {
848	print "<li class=\"indent\">";
849	$type = $args{'parametertypes'}{$parameter};
850	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
851	    # pointer-to-function
852	    print "<span class=\"type\">$1</span> ";
853	    print "<span class=\"param\">$parameter</span>";
854	    print "<span class=\"type\">)</span> ";
855	    print "(<span class=\"args\">$2</span>)";
856	} else {
857	    print "<span class=\"type\">$type</span> ";
858	    print "<span class=\"param\">$parameter</span>";
859	}
860	if ($count != $#{$args{'parameterlist'}}) {
861	    $count++;
862	    print ",";
863	}
864	print "</li>\n";
865    }
866    print "<li>)</li>\n";
867    print "</ol>\n";
868
869    print "<section>\n";
870    print "<h1>Arguments</h1>\n";
871    print "<p>\n";
872    print "<dl>\n";
873    foreach $parameter (@{$args{'parameterlist'}}) {
874	my $parameter_name = $parameter;
875	$parameter_name =~ s/\[.*//;
876
877	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
878	print "<dt>" . $parameter . "</dt>\n";
879	print "<dd>";
880	output_highlight($args{'parameterdescs'}{$parameter_name});
881	print "</dd>\n";
882    }
883    print "</dl>\n";
884    print "</section>\n";
885    output_section_html5(@_);
886    print "</article>\n";
887}
888
889# output DOC: block header in html5
890sub output_blockhead_html5(%) {
891    my %args = %{$_[0]};
892    my ($parameter, $section);
893    my $count;
894    my $html5id;
895
896    foreach $section (@{$args{'sectionlist'}}) {
897	$html5id = $section;
898	$html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
899	print "<article class=\"doc\" id=\"doc:". $html5id . "\">\n";
900	print "<h1>$section</h1>\n";
901	print "<p>\n";
902	output_highlight($args{'sections'}{$section});
903	print "</p>\n";
904    }
905    print "</article>\n";
906}
907
908sub output_section_xml(%) {
909    my %args = %{$_[0]};
910    my $section;
911    # print out each section
912    $lineprefix="   ";
913    foreach $section (@{$args{'sectionlist'}}) {
914	print "<refsect1>\n";
915	print "<title>$section</title>\n";
916	if ($section =~ m/EXAMPLE/i) {
917	    print "<informalexample><programlisting>\n";
918	    $output_preformatted = 1;
919	} else {
920	    print "<para>\n";
921	}
922	output_highlight($args{'sections'}{$section});
923	$output_preformatted = 0;
924	if ($section =~ m/EXAMPLE/i) {
925	    print "</programlisting></informalexample>\n";
926	} else {
927	    print "</para>\n";
928	}
929	print "</refsect1>\n";
930    }
931}
932
933# output function in XML DocBook
934sub output_function_xml(%) {
935    my %args = %{$_[0]};
936    my ($parameter, $section);
937    my $count;
938    my $id;
939
940    $id = "API-" . $args{'function'};
941    $id =~ s/[^A-Za-z0-9]/-/g;
942
943    print "<refentry id=\"$id\">\n";
944    print "<refentryinfo>\n";
945    print " <title>LINUX</title>\n";
946    print " <productname>Kernel Hackers Manual</productname>\n";
947    print " <date>$man_date</date>\n";
948    print "</refentryinfo>\n";
949    print "<refmeta>\n";
950    print " <refentrytitle><phrase>" . $args{'function'} . "</phrase></refentrytitle>\n";
951    print " <manvolnum>9</manvolnum>\n";
952    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
953    print "</refmeta>\n";
954    print "<refnamediv>\n";
955    print " <refname>" . $args{'function'} . "</refname>\n";
956    print " <refpurpose>\n";
957    print "  ";
958    output_highlight ($args{'purpose'});
959    print " </refpurpose>\n";
960    print "</refnamediv>\n";
961
962    print "<refsynopsisdiv>\n";
963    print " <title>Synopsis</title>\n";
964    print "  <funcsynopsis><funcprototype>\n";
965    print "   <funcdef>" . $args{'functiontype'} . " ";
966    print "<function>" . $args{'function'} . " </function></funcdef>\n";
967
968    $count = 0;
969    if ($#{$args{'parameterlist'}} >= 0) {
970	foreach $parameter (@{$args{'parameterlist'}}) {
971	    $type = $args{'parametertypes'}{$parameter};
972	    if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
973		# pointer-to-function
974		print "   <paramdef>$1<parameter>$parameter</parameter>)\n";
975		print "     <funcparams>$2</funcparams></paramdef>\n";
976	    } else {
977		print "   <paramdef>" . $type;
978		print " <parameter>$parameter</parameter></paramdef>\n";
979	    }
980	}
981    } else {
982	print "  <void/>\n";
983    }
984    print "  </funcprototype></funcsynopsis>\n";
985    print "</refsynopsisdiv>\n";
986
987    # print parameters
988    print "<refsect1>\n <title>Arguments</title>\n";
989    if ($#{$args{'parameterlist'}} >= 0) {
990	print " <variablelist>\n";
991	foreach $parameter (@{$args{'parameterlist'}}) {
992	    my $parameter_name = $parameter;
993	    $parameter_name =~ s/\[.*//;
994
995	    print "  <varlistentry>\n   <term><parameter>$parameter</parameter></term>\n";
996	    print "   <listitem>\n    <para>\n";
997	    $lineprefix="     ";
998	    output_highlight($args{'parameterdescs'}{$parameter_name});
999	    print "    </para>\n   </listitem>\n  </varlistentry>\n";
1000	}
1001	print " </variablelist>\n";
1002    } else {
1003	print " <para>\n  None\n </para>\n";
1004    }
1005    print "</refsect1>\n";
1006
1007    output_section_xml(@_);
1008    print "</refentry>\n\n";
1009}
1010
1011# output struct in XML DocBook
1012sub output_struct_xml(%) {
1013    my %args = %{$_[0]};
1014    my ($parameter, $section);
1015    my $id;
1016
1017    $id = "API-struct-" . $args{'struct'};
1018    $id =~ s/[^A-Za-z0-9]/-/g;
1019
1020    print "<refentry id=\"$id\">\n";
1021    print "<refentryinfo>\n";
1022    print " <title>LINUX</title>\n";
1023    print " <productname>Kernel Hackers Manual</productname>\n";
1024    print " <date>$man_date</date>\n";
1025    print "</refentryinfo>\n";
1026    print "<refmeta>\n";
1027    print " <refentrytitle><phrase>" . $args{'type'} . " " . $args{'struct'} . "</phrase></refentrytitle>\n";
1028    print " <manvolnum>9</manvolnum>\n";
1029    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
1030    print "</refmeta>\n";
1031    print "<refnamediv>\n";
1032    print " <refname>" . $args{'type'} . " " . $args{'struct'} . "</refname>\n";
1033    print " <refpurpose>\n";
1034    print "  ";
1035    output_highlight ($args{'purpose'});
1036    print " </refpurpose>\n";
1037    print "</refnamediv>\n";
1038
1039    print "<refsynopsisdiv>\n";
1040    print " <title>Synopsis</title>\n";
1041    print "  <programlisting>\n";
1042    print $args{'type'} . " " . $args{'struct'} . " {\n";
1043    foreach $parameter (@{$args{'parameterlist'}}) {
1044	if ($parameter =~ /^#/) {
1045	    my $prm = $parameter;
1046	    # convert data read & converted thru xml_escape() into &xyz; format:
1047	    # This allows us to have #define macros interspersed in a struct.
1048	    $prm =~ s/\\\\\\/\&/g;
1049	    print "$prm\n";
1050	    next;
1051	}
1052
1053	my $parameter_name = $parameter;
1054	$parameter_name =~ s/\[.*//;
1055
1056	defined($args{'parameterdescs'}{$parameter_name}) || next;
1057	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1058	$type = $args{'parametertypes'}{$parameter};
1059	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1060	    # pointer-to-function
1061	    print "  $1 $parameter) ($2);\n";
1062	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1063	    # bitfield
1064	    print "  $1 $parameter$2;\n";
1065	} else {
1066	    print "  " . $type . " " . $parameter . ";\n";
1067	}
1068    }
1069    print "};";
1070    print "  </programlisting>\n";
1071    print "</refsynopsisdiv>\n";
1072
1073    print " <refsect1>\n";
1074    print "  <title>Members</title>\n";
1075
1076    if ($#{$args{'parameterlist'}} >= 0) {
1077    print "  <variablelist>\n";
1078    foreach $parameter (@{$args{'parameterlist'}}) {
1079      ($parameter =~ /^#/) && next;
1080
1081      my $parameter_name = $parameter;
1082      $parameter_name =~ s/\[.*//;
1083
1084      defined($args{'parameterdescs'}{$parameter_name}) || next;
1085      ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1086      print "    <varlistentry>";
1087      print "      <term>$parameter</term>\n";
1088      print "      <listitem><para>\n";
1089      output_highlight($args{'parameterdescs'}{$parameter_name});
1090      print "      </para></listitem>\n";
1091      print "    </varlistentry>\n";
1092    }
1093    print "  </variablelist>\n";
1094    } else {
1095	print " <para>\n  None\n </para>\n";
1096    }
1097    print " </refsect1>\n";
1098
1099    output_section_xml(@_);
1100
1101    print "</refentry>\n\n";
1102}
1103
1104# output enum in XML DocBook
1105sub output_enum_xml(%) {
1106    my %args = %{$_[0]};
1107    my ($parameter, $section);
1108    my $count;
1109    my $id;
1110
1111    $id = "API-enum-" . $args{'enum'};
1112    $id =~ s/[^A-Za-z0-9]/-/g;
1113
1114    print "<refentry id=\"$id\">\n";
1115    print "<refentryinfo>\n";
1116    print " <title>LINUX</title>\n";
1117    print " <productname>Kernel Hackers Manual</productname>\n";
1118    print " <date>$man_date</date>\n";
1119    print "</refentryinfo>\n";
1120    print "<refmeta>\n";
1121    print " <refentrytitle><phrase>enum " . $args{'enum'} . "</phrase></refentrytitle>\n";
1122    print " <manvolnum>9</manvolnum>\n";
1123    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
1124    print "</refmeta>\n";
1125    print "<refnamediv>\n";
1126    print " <refname>enum " . $args{'enum'} . "</refname>\n";
1127    print " <refpurpose>\n";
1128    print "  ";
1129    output_highlight ($args{'purpose'});
1130    print " </refpurpose>\n";
1131    print "</refnamediv>\n";
1132
1133    print "<refsynopsisdiv>\n";
1134    print " <title>Synopsis</title>\n";
1135    print "  <programlisting>\n";
1136    print "enum " . $args{'enum'} . " {\n";
1137    $count = 0;
1138    foreach $parameter (@{$args{'parameterlist'}}) {
1139	print "  $parameter";
1140	if ($count != $#{$args{'parameterlist'}}) {
1141	    $count++;
1142	    print ",";
1143	}
1144	print "\n";
1145    }
1146    print "};";
1147    print "  </programlisting>\n";
1148    print "</refsynopsisdiv>\n";
1149
1150    print "<refsect1>\n";
1151    print " <title>Constants</title>\n";
1152    print "  <variablelist>\n";
1153    foreach $parameter (@{$args{'parameterlist'}}) {
1154      my $parameter_name = $parameter;
1155      $parameter_name =~ s/\[.*//;
1156
1157      print "    <varlistentry>";
1158      print "      <term>$parameter</term>\n";
1159      print "      <listitem><para>\n";
1160      output_highlight($args{'parameterdescs'}{$parameter_name});
1161      print "      </para></listitem>\n";
1162      print "    </varlistentry>\n";
1163    }
1164    print "  </variablelist>\n";
1165    print "</refsect1>\n";
1166
1167    output_section_xml(@_);
1168
1169    print "</refentry>\n\n";
1170}
1171
1172# output typedef in XML DocBook
1173sub output_typedef_xml(%) {
1174    my %args = %{$_[0]};
1175    my ($parameter, $section);
1176    my $id;
1177
1178    $id = "API-typedef-" . $args{'typedef'};
1179    $id =~ s/[^A-Za-z0-9]/-/g;
1180
1181    print "<refentry id=\"$id\">\n";
1182    print "<refentryinfo>\n";
1183    print " <title>LINUX</title>\n";
1184    print " <productname>Kernel Hackers Manual</productname>\n";
1185    print " <date>$man_date</date>\n";
1186    print "</refentryinfo>\n";
1187    print "<refmeta>\n";
1188    print " <refentrytitle><phrase>typedef " . $args{'typedef'} . "</phrase></refentrytitle>\n";
1189    print " <manvolnum>9</manvolnum>\n";
1190    print "</refmeta>\n";
1191    print "<refnamediv>\n";
1192    print " <refname>typedef " . $args{'typedef'} . "</refname>\n";
1193    print " <refpurpose>\n";
1194    print "  ";
1195    output_highlight ($args{'purpose'});
1196    print " </refpurpose>\n";
1197    print "</refnamediv>\n";
1198
1199    print "<refsynopsisdiv>\n";
1200    print " <title>Synopsis</title>\n";
1201    print "  <synopsis>typedef " . $args{'typedef'} . ";</synopsis>\n";
1202    print "</refsynopsisdiv>\n";
1203
1204    output_section_xml(@_);
1205
1206    print "</refentry>\n\n";
1207}
1208
1209# output in XML DocBook
1210sub output_blockhead_xml(%) {
1211    my %args = %{$_[0]};
1212    my ($parameter, $section);
1213    my $count;
1214
1215    my $id = $args{'module'};
1216    $id =~ s/[^A-Za-z0-9]/-/g;
1217
1218    # print out each section
1219    $lineprefix="   ";
1220    foreach $section (@{$args{'sectionlist'}}) {
1221	if (!$args{'content-only'}) {
1222		print "<refsect1>\n <title>$section</title>\n";
1223	}
1224	if ($section =~ m/EXAMPLE/i) {
1225	    print "<example><para>\n";
1226	    $output_preformatted = 1;
1227	} else {
1228	    print "<para>\n";
1229	}
1230	output_highlight($args{'sections'}{$section});
1231	$output_preformatted = 0;
1232	if ($section =~ m/EXAMPLE/i) {
1233	    print "</para></example>\n";
1234	} else {
1235	    print "</para>";
1236	}
1237	if (!$args{'content-only'}) {
1238		print "\n</refsect1>\n";
1239	}
1240    }
1241
1242    print "\n\n";
1243}
1244
1245# output in XML DocBook
1246sub output_function_gnome {
1247    my %args = %{$_[0]};
1248    my ($parameter, $section);
1249    my $count;
1250    my $id;
1251
1252    $id = $args{'module'} . "-" . $args{'function'};
1253    $id =~ s/[^A-Za-z0-9]/-/g;
1254
1255    print "<sect2>\n";
1256    print " <title id=\"$id\">" . $args{'function'} . "</title>\n";
1257
1258    print "  <funcsynopsis>\n";
1259    print "   <funcdef>" . $args{'functiontype'} . " ";
1260    print "<function>" . $args{'function'} . " ";
1261    print "</function></funcdef>\n";
1262
1263    $count = 0;
1264    if ($#{$args{'parameterlist'}} >= 0) {
1265	foreach $parameter (@{$args{'parameterlist'}}) {
1266	    $type = $args{'parametertypes'}{$parameter};
1267	    if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1268		# pointer-to-function
1269		print "   <paramdef>$1 <parameter>$parameter</parameter>)\n";
1270		print "     <funcparams>$2</funcparams></paramdef>\n";
1271	    } else {
1272		print "   <paramdef>" . $type;
1273		print " <parameter>$parameter</parameter></paramdef>\n";
1274	    }
1275	}
1276    } else {
1277	print "  <void>\n";
1278    }
1279    print "  </funcsynopsis>\n";
1280    if ($#{$args{'parameterlist'}} >= 0) {
1281	print " <informaltable pgwide=\"1\" frame=\"none\" role=\"params\">\n";
1282	print "<tgroup cols=\"2\">\n";
1283	print "<colspec colwidth=\"2*\">\n";
1284	print "<colspec colwidth=\"8*\">\n";
1285	print "<tbody>\n";
1286	foreach $parameter (@{$args{'parameterlist'}}) {
1287	    my $parameter_name = $parameter;
1288	    $parameter_name =~ s/\[.*//;
1289
1290	    print "  <row><entry align=\"right\"><parameter>$parameter</parameter></entry>\n";
1291	    print "   <entry>\n";
1292	    $lineprefix="     ";
1293	    output_highlight($args{'parameterdescs'}{$parameter_name});
1294	    print "    </entry></row>\n";
1295	}
1296	print " </tbody></tgroup></informaltable>\n";
1297    } else {
1298	print " <para>\n  None\n </para>\n";
1299    }
1300
1301    # print out each section
1302    $lineprefix="   ";
1303    foreach $section (@{$args{'sectionlist'}}) {
1304	print "<simplesect>\n <title>$section</title>\n";
1305	if ($section =~ m/EXAMPLE/i) {
1306	    print "<example><programlisting>\n";
1307	    $output_preformatted = 1;
1308	} else {
1309	}
1310	print "<para>\n";
1311	output_highlight($args{'sections'}{$section});
1312	$output_preformatted = 0;
1313	print "</para>\n";
1314	if ($section =~ m/EXAMPLE/i) {
1315	    print "</programlisting></example>\n";
1316	} else {
1317	}
1318	print " </simplesect>\n";
1319    }
1320
1321    print "</sect2>\n\n";
1322}
1323
1324##
1325# output function in man
1326sub output_function_man(%) {
1327    my %args = %{$_[0]};
1328    my ($parameter, $section);
1329    my $count;
1330
1331    print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
1332
1333    print ".SH NAME\n";
1334    print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
1335
1336    print ".SH SYNOPSIS\n";
1337    if ($args{'functiontype'} ne "") {
1338	print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
1339    } else {
1340	print ".B \"" . $args{'function'} . "\n";
1341    }
1342    $count = 0;
1343    my $parenth = "(";
1344    my $post = ",";
1345    foreach my $parameter (@{$args{'parameterlist'}}) {
1346	if ($count == $#{$args{'parameterlist'}}) {
1347	    $post = ");";
1348	}
1349	$type = $args{'parametertypes'}{$parameter};
1350	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1351	    # pointer-to-function
1352	    print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
1353	} else {
1354	    $type =~ s/([^\*])$/$1 /;
1355	    print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
1356	}
1357	$count++;
1358	$parenth = "";
1359    }
1360
1361    print ".SH ARGUMENTS\n";
1362    foreach $parameter (@{$args{'parameterlist'}}) {
1363	my $parameter_name = $parameter;
1364	$parameter_name =~ s/\[.*//;
1365
1366	print ".IP \"" . $parameter . "\" 12\n";
1367	output_highlight($args{'parameterdescs'}{$parameter_name});
1368    }
1369    foreach $section (@{$args{'sectionlist'}}) {
1370	print ".SH \"", uc $section, "\"\n";
1371	output_highlight($args{'sections'}{$section});
1372    }
1373}
1374
1375##
1376# output enum in man
1377sub output_enum_man(%) {
1378    my %args = %{$_[0]};
1379    my ($parameter, $section);
1380    my $count;
1381
1382    print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
1383
1384    print ".SH NAME\n";
1385    print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
1386
1387    print ".SH SYNOPSIS\n";
1388    print "enum " . $args{'enum'} . " {\n";
1389    $count = 0;
1390    foreach my $parameter (@{$args{'parameterlist'}}) {
1391	print ".br\n.BI \"    $parameter\"\n";
1392	if ($count == $#{$args{'parameterlist'}}) {
1393	    print "\n};\n";
1394	    last;
1395	}
1396	else {
1397	    print ", \n.br\n";
1398	}
1399	$count++;
1400    }
1401
1402    print ".SH Constants\n";
1403    foreach $parameter (@{$args{'parameterlist'}}) {
1404	my $parameter_name = $parameter;
1405	$parameter_name =~ s/\[.*//;
1406
1407	print ".IP \"" . $parameter . "\" 12\n";
1408	output_highlight($args{'parameterdescs'}{$parameter_name});
1409    }
1410    foreach $section (@{$args{'sectionlist'}}) {
1411	print ".SH \"$section\"\n";
1412	output_highlight($args{'sections'}{$section});
1413    }
1414}
1415
1416##
1417# output struct in man
1418sub output_struct_man(%) {
1419    my %args = %{$_[0]};
1420    my ($parameter, $section);
1421
1422    print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
1423
1424    print ".SH NAME\n";
1425    print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
1426
1427    print ".SH SYNOPSIS\n";
1428    print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
1429
1430    foreach my $parameter (@{$args{'parameterlist'}}) {
1431	if ($parameter =~ /^#/) {
1432	    print ".BI \"$parameter\"\n.br\n";
1433	    next;
1434	}
1435	my $parameter_name = $parameter;
1436	$parameter_name =~ s/\[.*//;
1437
1438	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1439	$type = $args{'parametertypes'}{$parameter};
1440	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1441	    # pointer-to-function
1442	    print ".BI \"    " . $1 . "\" " . $parameter . " \") (" . $2 . ")" . "\"\n;\n";
1443	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1444	    # bitfield
1445	    print ".BI \"    " . $1 . "\ \" " . $parameter . $2 . " \"" . "\"\n;\n";
1446	} else {
1447	    $type =~ s/([^\*])$/$1 /;
1448	    print ".BI \"    " . $type . "\" " . $parameter . " \"" . "\"\n;\n";
1449	}
1450	print "\n.br\n";
1451    }
1452    print "};\n.br\n";
1453
1454    print ".SH Members\n";
1455    foreach $parameter (@{$args{'parameterlist'}}) {
1456	($parameter =~ /^#/) && next;
1457
1458	my $parameter_name = $parameter;
1459	$parameter_name =~ s/\[.*//;
1460
1461	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1462	print ".IP \"" . $parameter . "\" 12\n";
1463	output_highlight($args{'parameterdescs'}{$parameter_name});
1464    }
1465    foreach $section (@{$args{'sectionlist'}}) {
1466	print ".SH \"$section\"\n";
1467	output_highlight($args{'sections'}{$section});
1468    }
1469}
1470
1471##
1472# output typedef in man
1473sub output_typedef_man(%) {
1474    my %args = %{$_[0]};
1475    my ($parameter, $section);
1476
1477    print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
1478
1479    print ".SH NAME\n";
1480    print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
1481
1482    foreach $section (@{$args{'sectionlist'}}) {
1483	print ".SH \"$section\"\n";
1484	output_highlight($args{'sections'}{$section});
1485    }
1486}
1487
1488sub output_blockhead_man(%) {
1489    my %args = %{$_[0]};
1490    my ($parameter, $section);
1491    my $count;
1492
1493    print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
1494
1495    foreach $section (@{$args{'sectionlist'}}) {
1496	print ".SH \"$section\"\n";
1497	output_highlight($args{'sections'}{$section});
1498    }
1499}
1500
1501##
1502# output in text
1503sub output_function_text(%) {
1504    my %args = %{$_[0]};
1505    my ($parameter, $section);
1506    my $start;
1507
1508    print "Name:\n\n";
1509    print $args{'function'} . " - " . $args{'purpose'} . "\n";
1510
1511    print "\nSynopsis:\n\n";
1512    if ($args{'functiontype'} ne "") {
1513	$start = $args{'functiontype'} . " " . $args{'function'} . " (";
1514    } else {
1515	$start = $args{'function'} . " (";
1516    }
1517    print $start;
1518
1519    my $count = 0;
1520    foreach my $parameter (@{$args{'parameterlist'}}) {
1521	$type = $args{'parametertypes'}{$parameter};
1522	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1523	    # pointer-to-function
1524	    print $1 . $parameter . ") (" . $2;
1525	} else {
1526	    print $type . " " . $parameter;
1527	}
1528	if ($count != $#{$args{'parameterlist'}}) {
1529	    $count++;
1530	    print ",\n";
1531	    print " " x length($start);
1532	} else {
1533	    print ");\n\n";
1534	}
1535    }
1536
1537    print "Arguments:\n\n";
1538    foreach $parameter (@{$args{'parameterlist'}}) {
1539	my $parameter_name = $parameter;
1540	$parameter_name =~ s/\[.*//;
1541
1542	print $parameter . "\n\t" . $args{'parameterdescs'}{$parameter_name} . "\n";
1543    }
1544    output_section_text(@_);
1545}
1546
1547#output sections in text
1548sub output_section_text(%) {
1549    my %args = %{$_[0]};
1550    my $section;
1551
1552    print "\n";
1553    foreach $section (@{$args{'sectionlist'}}) {
1554	print "$section:\n\n";
1555	output_highlight($args{'sections'}{$section});
1556    }
1557    print "\n\n";
1558}
1559
1560# output enum in text
1561sub output_enum_text(%) {
1562    my %args = %{$_[0]};
1563    my ($parameter);
1564    my $count;
1565    print "Enum:\n\n";
1566
1567    print "enum " . $args{'enum'} . " - " . $args{'purpose'} . "\n\n";
1568    print "enum " . $args{'enum'} . " {\n";
1569    $count = 0;
1570    foreach $parameter (@{$args{'parameterlist'}}) {
1571	print "\t$parameter";
1572	if ($count != $#{$args{'parameterlist'}}) {
1573	    $count++;
1574	    print ",";
1575	}
1576	print "\n";
1577    }
1578    print "};\n\n";
1579
1580    print "Constants:\n\n";
1581    foreach $parameter (@{$args{'parameterlist'}}) {
1582	print "$parameter\n\t";
1583	print $args{'parameterdescs'}{$parameter} . "\n";
1584    }
1585
1586    output_section_text(@_);
1587}
1588
1589# output typedef in text
1590sub output_typedef_text(%) {
1591    my %args = %{$_[0]};
1592    my ($parameter);
1593    my $count;
1594    print "Typedef:\n\n";
1595
1596    print "typedef " . $args{'typedef'} . " - " . $args{'purpose'} . "\n";
1597    output_section_text(@_);
1598}
1599
1600# output struct as text
1601sub output_struct_text(%) {
1602    my %args = %{$_[0]};
1603    my ($parameter);
1604
1605    print $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "\n\n";
1606    print $args{'type'} . " " . $args{'struct'} . " {\n";
1607    foreach $parameter (@{$args{'parameterlist'}}) {
1608	if ($parameter =~ /^#/) {
1609	    print "$parameter\n";
1610	    next;
1611	}
1612
1613	my $parameter_name = $parameter;
1614	$parameter_name =~ s/\[.*//;
1615
1616	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1617	$type = $args{'parametertypes'}{$parameter};
1618	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1619	    # pointer-to-function
1620	    print "\t$1 $parameter) ($2);\n";
1621	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1622	    # bitfield
1623	    print "\t$1 $parameter$2;\n";
1624	} else {
1625	    print "\t" . $type . " " . $parameter . ";\n";
1626	}
1627    }
1628    print "};\n\n";
1629
1630    print "Members:\n\n";
1631    foreach $parameter (@{$args{'parameterlist'}}) {
1632	($parameter =~ /^#/) && next;
1633
1634	my $parameter_name = $parameter;
1635	$parameter_name =~ s/\[.*//;
1636
1637	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1638	print "$parameter\n\t";
1639	print $args{'parameterdescs'}{$parameter_name} . "\n";
1640    }
1641    print "\n";
1642    output_section_text(@_);
1643}
1644
1645sub output_blockhead_text(%) {
1646    my %args = %{$_[0]};
1647    my ($parameter, $section);
1648
1649    foreach $section (@{$args{'sectionlist'}}) {
1650	print " $section:\n";
1651	print "    -> ";
1652	output_highlight($args{'sections'}{$section});
1653    }
1654}
1655
1656## list mode output functions
1657
1658sub output_function_list(%) {
1659    my %args = %{$_[0]};
1660
1661    print $args{'function'} . "\n";
1662}
1663
1664# output enum in list
1665sub output_enum_list(%) {
1666    my %args = %{$_[0]};
1667    print $args{'enum'} . "\n";
1668}
1669
1670# output typedef in list
1671sub output_typedef_list(%) {
1672    my %args = %{$_[0]};
1673    print $args{'typedef'} . "\n";
1674}
1675
1676# output struct as list
1677sub output_struct_list(%) {
1678    my %args = %{$_[0]};
1679
1680    print $args{'struct'} . "\n";
1681}
1682
1683sub output_blockhead_list(%) {
1684    my %args = %{$_[0]};
1685    my ($parameter, $section);
1686
1687    foreach $section (@{$args{'sectionlist'}}) {
1688	print "DOC: $section\n";
1689    }
1690}
1691
1692##
1693# generic output function for all types (function, struct/union, typedef, enum);
1694# calls the generated, variable output_ function name based on
1695# functype and output_mode
1696sub output_declaration {
1697    no strict 'refs';
1698    my $name = shift;
1699    my $functype = shift;
1700    my $func = "output_${functype}_$output_mode";
1701    if (($function_only==0) ||
1702	( $function_only == 1 && defined($function_table{$name})) ||
1703	( $function_only == 2 && !defined($function_table{$name})))
1704    {
1705	&$func(@_);
1706	$section_counter++;
1707    }
1708}
1709
1710##
1711# generic output function - calls the right one based on current output mode.
1712sub output_blockhead {
1713    no strict 'refs';
1714    my $func = "output_blockhead_" . $output_mode;
1715    &$func(@_);
1716    $section_counter++;
1717}
1718
1719##
1720# takes a declaration (struct, union, enum, typedef) and
1721# invokes the right handler. NOT called for functions.
1722sub dump_declaration($$) {
1723    no strict 'refs';
1724    my ($prototype, $file) = @_;
1725    my $func = "dump_" . $decl_type;
1726    &$func(@_);
1727}
1728
1729sub dump_union($$) {
1730    dump_struct(@_);
1731}
1732
1733sub dump_struct($$) {
1734    my $x = shift;
1735    my $file = shift;
1736    my $nested;
1737
1738    if ($x =~ /(struct|union)\s+(\w+)\s*{(.*)}/) {
1739	#my $decl_type = $1;
1740	$declaration_name = $2;
1741	my $members = $3;
1742
1743	# ignore embedded structs or unions
1744	$members =~ s/({.*})//g;
1745	$nested = $1;
1746
1747	# ignore members marked private:
1748	$members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gos;
1749	$members =~ s/\/\*\s*private:.*//gos;
1750	# strip comments:
1751	$members =~ s/\/\*.*?\*\///gos;
1752	$nested =~ s/\/\*.*?\*\///gos;
1753	# strip kmemcheck_bitfield_{begin,end}.*;
1754	$members =~ s/kmemcheck_bitfield_.*?;//gos;
1755	# strip attributes
1756	$members =~ s/__aligned\s*\(.+\)//gos;
1757
1758	create_parameterlist($members, ';', $file);
1759	check_sections($file, $declaration_name, "struct", $sectcheck, $struct_actual, $nested);
1760
1761	output_declaration($declaration_name,
1762			   'struct',
1763			   {'struct' => $declaration_name,
1764			    'module' => $modulename,
1765			    'parameterlist' => \@parameterlist,
1766			    'parameterdescs' => \%parameterdescs,
1767			    'parametertypes' => \%parametertypes,
1768			    'sectionlist' => \@sectionlist,
1769			    'sections' => \%sections,
1770			    'purpose' => $declaration_purpose,
1771			    'type' => $decl_type
1772			   });
1773    }
1774    else {
1775	print STDERR "Error(${file}:$.): Cannot parse struct or union!\n";
1776	++$errors;
1777    }
1778}
1779
1780sub dump_enum($$) {
1781    my $x = shift;
1782    my $file = shift;
1783
1784    $x =~ s@/\*.*?\*/@@gos;	# strip comments.
1785    $x =~ s/^#\s*define\s+.*$//; # strip #define macros inside enums
1786
1787    if ($x =~ /enum\s+(\w+)\s*{(.*)}/) {
1788	$declaration_name = $1;
1789	my $members = $2;
1790
1791	foreach my $arg (split ',', $members) {
1792	    $arg =~ s/^\s*(\w+).*/$1/;
1793	    push @parameterlist, $arg;
1794	    if (!$parameterdescs{$arg}) {
1795		$parameterdescs{$arg} = $undescribed;
1796		print STDERR "Warning(${file}:$.): Enum value '$arg' ".
1797		    "not described in enum '$declaration_name'\n";
1798	    }
1799
1800	}
1801
1802	output_declaration($declaration_name,
1803			   'enum',
1804			   {'enum' => $declaration_name,
1805			    'module' => $modulename,
1806			    'parameterlist' => \@parameterlist,
1807			    'parameterdescs' => \%parameterdescs,
1808			    'sectionlist' => \@sectionlist,
1809			    'sections' => \%sections,
1810			    'purpose' => $declaration_purpose
1811			   });
1812    }
1813    else {
1814	print STDERR "Error(${file}:$.): Cannot parse enum!\n";
1815	++$errors;
1816    }
1817}
1818
1819sub dump_typedef($$) {
1820    my $x = shift;
1821    my $file = shift;
1822
1823    $x =~ s@/\*.*?\*/@@gos;	# strip comments.
1824    while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
1825	$x =~ s/\(*.\)\s*;$/;/;
1826	$x =~ s/\[*.\]\s*;$/;/;
1827    }
1828
1829    if ($x =~ /typedef.*\s+(\w+)\s*;/) {
1830	$declaration_name = $1;
1831
1832	output_declaration($declaration_name,
1833			   'typedef',
1834			   {'typedef' => $declaration_name,
1835			    'module' => $modulename,
1836			    'sectionlist' => \@sectionlist,
1837			    'sections' => \%sections,
1838			    'purpose' => $declaration_purpose
1839			   });
1840    }
1841    else {
1842	print STDERR "Error(${file}:$.): Cannot parse typedef!\n";
1843	++$errors;
1844    }
1845}
1846
1847sub save_struct_actual($) {
1848    my $actual = shift;
1849
1850    # strip all spaces from the actual param so that it looks like one string item
1851    $actual =~ s/\s*//g;
1852    $struct_actual = $struct_actual . $actual . " ";
1853}
1854
1855sub create_parameterlist($$$) {
1856    my $args = shift;
1857    my $splitter = shift;
1858    my $file = shift;
1859    my $type;
1860    my $param;
1861
1862    # temporarily replace commas inside function pointer definition
1863    while ($args =~ /(\([^\),]+),/) {
1864	$args =~ s/(\([^\),]+),/$1#/g;
1865    }
1866
1867    foreach my $arg (split($splitter, $args)) {
1868	# strip comments
1869	$arg =~ s/\/\*.*\*\///;
1870	# strip leading/trailing spaces
1871	$arg =~ s/^\s*//;
1872	$arg =~ s/\s*$//;
1873	$arg =~ s/\s+/ /;
1874
1875	if ($arg =~ /^#/) {
1876	    # Treat preprocessor directive as a typeless variable just to fill
1877	    # corresponding data structures "correctly". Catch it later in
1878	    # output_* subs.
1879	    push_parameter($arg, "", $file);
1880	} elsif ($arg =~ m/\(.+\)\s*\(/) {
1881	    # pointer-to-function
1882	    $arg =~ tr/#/,/;
1883	    $arg =~ m/[^\(]+\(\*?\s*(\w*)\s*\)/;
1884	    $param = $1;
1885	    $type = $arg;
1886	    $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
1887	    save_struct_actual($param);
1888	    push_parameter($param, $type, $file);
1889	} elsif ($arg) {
1890	    $arg =~ s/\s*:\s*/:/g;
1891	    $arg =~ s/\s*\[/\[/g;
1892
1893	    my @args = split('\s*,\s*', $arg);
1894	    if ($args[0] =~ m/\*/) {
1895		$args[0] =~ s/(\*+)\s*/ $1/;
1896	    }
1897
1898	    my @first_arg;
1899	    if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
1900		    shift @args;
1901		    push(@first_arg, split('\s+', $1));
1902		    push(@first_arg, $2);
1903	    } else {
1904		    @first_arg = split('\s+', shift @args);
1905	    }
1906
1907	    unshift(@args, pop @first_arg);
1908	    $type = join " ", @first_arg;
1909
1910	    foreach $param (@args) {
1911		if ($param =~ m/^(\*+)\s*(.*)/) {
1912		    save_struct_actual($2);
1913		    push_parameter($2, "$type $1", $file);
1914		}
1915		elsif ($param =~ m/(.*?):(\d+)/) {
1916		    if ($type ne "") { # skip unnamed bit-fields
1917			save_struct_actual($1);
1918			push_parameter($1, "$type:$2", $file)
1919		    }
1920		}
1921		else {
1922		    save_struct_actual($param);
1923		    push_parameter($param, $type, $file);
1924		}
1925	    }
1926	}
1927    }
1928}
1929
1930sub push_parameter($$$) {
1931	my $param = shift;
1932	my $type = shift;
1933	my $file = shift;
1934
1935	if (($anon_struct_union == 1) && ($type eq "") &&
1936	    ($param eq "}")) {
1937		return;		# ignore the ending }; from anon. struct/union
1938	}
1939
1940	$anon_struct_union = 0;
1941	my $param_name = $param;
1942	$param_name =~ s/\[.*//;
1943
1944	if ($type eq "" && $param =~ /\.\.\.$/)
1945	{
1946	    if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
1947		$parameterdescs{$param} = "variable arguments";
1948	    }
1949	}
1950	elsif ($type eq "" && ($param eq "" or $param eq "void"))
1951	{
1952	    $param="void";
1953	    $parameterdescs{void} = "no arguments";
1954	}
1955	elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
1956	# handle unnamed (anonymous) union or struct:
1957	{
1958		$type = $param;
1959		$param = "{unnamed_" . $param . "}";
1960		$parameterdescs{$param} = "anonymous\n";
1961		$anon_struct_union = 1;
1962	}
1963
1964	# warn if parameter has no description
1965	# (but ignore ones starting with # as these are not parameters
1966	# but inline preprocessor statements);
1967	# also ignore unnamed structs/unions;
1968	if (!$anon_struct_union) {
1969	if (!defined $parameterdescs{$param_name} && $param_name !~ /^#/) {
1970
1971	    $parameterdescs{$param_name} = $undescribed;
1972
1973	    if (($type eq 'function') || ($type eq 'enum')) {
1974		print STDERR "Warning(${file}:$.): Function parameter ".
1975		    "or member '$param' not " .
1976		    "described in '$declaration_name'\n";
1977	    }
1978	    print STDERR "Warning(${file}:$.):" .
1979			 " No description found for parameter '$param'\n";
1980	    ++$warnings;
1981	}
1982	}
1983
1984	$param = xml_escape($param);
1985
1986	# strip spaces from $param so that it is one continuous string
1987	# on @parameterlist;
1988	# this fixes a problem where check_sections() cannot find
1989	# a parameter like "addr[6 + 2]" because it actually appears
1990	# as "addr[6", "+", "2]" on the parameter list;
1991	# but it's better to maintain the param string unchanged for output,
1992	# so just weaken the string compare in check_sections() to ignore
1993	# "[blah" in a parameter string;
1994	###$param =~ s/\s*//g;
1995	push @parameterlist, $param;
1996	$parametertypes{$param} = $type;
1997}
1998
1999sub check_sections($$$$$$) {
2000	my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck, $nested) = @_;
2001	my @sects = split ' ', $sectcheck;
2002	my @prms = split ' ', $prmscheck;
2003	my $err;
2004	my ($px, $sx);
2005	my $prm_clean;		# strip trailing "[array size]" and/or beginning "*"
2006
2007	foreach $sx (0 .. $#sects) {
2008		$err = 1;
2009		foreach $px (0 .. $#prms) {
2010			$prm_clean = $prms[$px];
2011			$prm_clean =~ s/\[.*\]//;
2012			$prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
2013			# ignore array size in a parameter string;
2014			# however, the original param string may contain
2015			# spaces, e.g.:  addr[6 + 2]
2016			# and this appears in @prms as "addr[6" since the
2017			# parameter list is split at spaces;
2018			# hence just ignore "[..." for the sections check;
2019			$prm_clean =~ s/\[.*//;
2020
2021			##$prm_clean =~ s/^\**//;
2022			if ($prm_clean eq $sects[$sx]) {
2023				$err = 0;
2024				last;
2025			}
2026		}
2027		if ($err) {
2028			if ($decl_type eq "function") {
2029				print STDERR "Warning(${file}:$.): " .
2030					"Excess function parameter " .
2031					"'$sects[$sx]' " .
2032					"description in '$decl_name'\n";
2033				++$warnings;
2034			} else {
2035				if ($nested !~ m/\Q$sects[$sx]\E/) {
2036				    print STDERR "Warning(${file}:$.): " .
2037					"Excess struct/union/enum/typedef member " .
2038					"'$sects[$sx]' " .
2039					"description in '$decl_name'\n";
2040				    ++$warnings;
2041				}
2042			}
2043		}
2044	}
2045}
2046
2047##
2048# Checks the section describing the return value of a function.
2049sub check_return_section {
2050        my $file = shift;
2051        my $declaration_name = shift;
2052        my $return_type = shift;
2053
2054        # Ignore an empty return type (It's a macro)
2055        # Ignore functions with a "void" return type. (But don't ignore "void *")
2056        if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) {
2057                return;
2058        }
2059
2060        if (!defined($sections{$section_return}) ||
2061            $sections{$section_return} eq "") {
2062                print STDERR "Warning(${file}:$.): " .
2063                        "No description found for return value of " .
2064                        "'$declaration_name'\n";
2065                ++$warnings;
2066        }
2067}
2068
2069##
2070# takes a function prototype and the name of the current file being
2071# processed and spits out all the details stored in the global
2072# arrays/hashes.
2073sub dump_function($$) {
2074    my $prototype = shift;
2075    my $file = shift;
2076    my $noret = 0;
2077
2078    $prototype =~ s/^static +//;
2079    $prototype =~ s/^extern +//;
2080    $prototype =~ s/^asmlinkage +//;
2081    $prototype =~ s/^inline +//;
2082    $prototype =~ s/^__inline__ +//;
2083    $prototype =~ s/^__inline +//;
2084    $prototype =~ s/^__always_inline +//;
2085    $prototype =~ s/^noinline +//;
2086    $prototype =~ s/__init +//;
2087    $prototype =~ s/__init_or_module +//;
2088    $prototype =~ s/__must_check +//;
2089    $prototype =~ s/__weak +//;
2090    my $define = $prototype =~ s/^#\s*define\s+//; #ak added
2091    $prototype =~ s/__attribute__\s*\(\([a-z,]*\)\)//;
2092
2093    # Yes, this truly is vile.  We are looking for:
2094    # 1. Return type (may be nothing if we're looking at a macro)
2095    # 2. Function name
2096    # 3. Function parameters.
2097    #
2098    # All the while we have to watch out for function pointer parameters
2099    # (which IIRC is what the two sections are for), C types (these
2100    # regexps don't even start to express all the possibilities), and
2101    # so on.
2102    #
2103    # If you mess with these regexps, it's a good idea to check that
2104    # the following functions' documentation still comes out right:
2105    # - parport_register_device (function pointer parameters)
2106    # - atomic_set (macro)
2107    # - pci_match_device, __copy_to_user (long return type)
2108
2109    if ($define && $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s+/) {
2110        # This is an object-like macro, it has no return type and no parameter
2111        # list.
2112        # Function-like macros are not allowed to have spaces between
2113        # declaration_name and opening parenthesis (notice the \s+).
2114        $return_type = $1;
2115        $declaration_name = $2;
2116        $noret = 1;
2117    } elsif ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
2118	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
2119	$prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
2120	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
2121	$prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
2122	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
2123	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
2124	$prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
2125	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
2126	$prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
2127	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
2128	$prototype =~ m/^(\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
2129	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
2130	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
2131	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
2132	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
2133	$prototype =~ m/^(\w+\s+\w+\s*\*\s*\w+\s*\*\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/)  {
2134	$return_type = $1;
2135	$declaration_name = $2;
2136	my $args = $3;
2137
2138	create_parameterlist($args, ',', $file);
2139    } else {
2140	print STDERR "Warning(${file}:$.): cannot understand function prototype: '$prototype'\n";
2141	return;
2142    }
2143
2144	my $prms = join " ", @parameterlist;
2145	check_sections($file, $declaration_name, "function", $sectcheck, $prms, "");
2146
2147        # This check emits a lot of warnings at the moment, because many
2148        # functions don't have a 'Return' doc section. So until the number
2149        # of warnings goes sufficiently down, the check is only performed in
2150        # verbose mode.
2151        # TODO: always perform the check.
2152        if ($verbose && !$noret) {
2153                check_return_section($file, $declaration_name, $return_type);
2154        }
2155
2156    output_declaration($declaration_name,
2157		       'function',
2158		       {'function' => $declaration_name,
2159			'module' => $modulename,
2160			'functiontype' => $return_type,
2161			'parameterlist' => \@parameterlist,
2162			'parameterdescs' => \%parameterdescs,
2163			'parametertypes' => \%parametertypes,
2164			'sectionlist' => \@sectionlist,
2165			'sections' => \%sections,
2166			'purpose' => $declaration_purpose
2167		       });
2168}
2169
2170sub reset_state {
2171    $function = "";
2172    %constants = ();
2173    %parameterdescs = ();
2174    %parametertypes = ();
2175    @parameterlist = ();
2176    %sections = ();
2177    @sectionlist = ();
2178    $sectcheck = "";
2179    $struct_actual = "";
2180    $prototype = "";
2181
2182    $state = 0;
2183}
2184
2185sub tracepoint_munge($) {
2186	my $file = shift;
2187	my $tracepointname = 0;
2188	my $tracepointargs = 0;
2189
2190	if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
2191		$tracepointname = $1;
2192	}
2193	if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
2194		$tracepointname = $1;
2195	}
2196	if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
2197		$tracepointname = $2;
2198	}
2199	$tracepointname =~ s/^\s+//; #strip leading whitespace
2200	if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
2201		$tracepointargs = $1;
2202	}
2203	if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
2204		print STDERR "Warning(${file}:$.): Unrecognized tracepoint format: \n".
2205			     "$prototype\n";
2206	} else {
2207		$prototype = "static inline void trace_$tracepointname($tracepointargs)";
2208	}
2209}
2210
2211sub syscall_munge() {
2212	my $void = 0;
2213
2214	$prototype =~ s@[\r\n\t]+@ @gos; # strip newlines/CR's/tabs
2215##	if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
2216	if ($prototype =~ m/SYSCALL_DEFINE0/) {
2217		$void = 1;
2218##		$prototype = "long sys_$1(void)";
2219	}
2220
2221	$prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
2222	if ($prototype =~ m/long (sys_.*?),/) {
2223		$prototype =~ s/,/\(/;
2224	} elsif ($void) {
2225		$prototype =~ s/\)/\(void\)/;
2226	}
2227
2228	# now delete all of the odd-number commas in $prototype
2229	# so that arg types & arg names don't have a comma between them
2230	my $count = 0;
2231	my $len = length($prototype);
2232	if ($void) {
2233		$len = 0;	# skip the for-loop
2234	}
2235	for (my $ix = 0; $ix < $len; $ix++) {
2236		if (substr($prototype, $ix, 1) eq ',') {
2237			$count++;
2238			if ($count % 2 == 1) {
2239				substr($prototype, $ix, 1) = ' ';
2240			}
2241		}
2242	}
2243}
2244
2245sub process_state3_function($$) {
2246    my $x = shift;
2247    my $file = shift;
2248
2249    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
2250
2251    if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
2252	# do nothing
2253    }
2254    elsif ($x =~ /([^\{]*)/) {
2255	$prototype .= $1;
2256    }
2257
2258    if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
2259	$prototype =~ s@/\*.*?\*/@@gos;	# strip comments.
2260	$prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
2261	$prototype =~ s@^\s+@@gos; # strip leading spaces
2262	if ($prototype =~ /SYSCALL_DEFINE/) {
2263		syscall_munge();
2264	}
2265	if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
2266	    $prototype =~ /DEFINE_SINGLE_EVENT/)
2267	{
2268		tracepoint_munge($file);
2269	}
2270	dump_function($prototype, $file);
2271	reset_state();
2272    }
2273}
2274
2275sub process_state3_type($$) {
2276    my $x = shift;
2277    my $file = shift;
2278
2279    $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
2280    $x =~ s@^\s+@@gos; # strip leading spaces
2281    $x =~ s@\s+$@@gos; # strip trailing spaces
2282    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
2283
2284    if ($x =~ /^#/) {
2285	# To distinguish preprocessor directive from regular declaration later.
2286	$x .= ";";
2287    }
2288
2289    while (1) {
2290	if ( $x =~ /([^{};]*)([{};])(.*)/ ) {
2291	    $prototype .= $1 . $2;
2292	    ($2 eq '{') && $brcount++;
2293	    ($2 eq '}') && $brcount--;
2294	    if (($2 eq ';') && ($brcount == 0)) {
2295		dump_declaration($prototype, $file);
2296		reset_state();
2297		last;
2298	    }
2299	    $x = $3;
2300	} else {
2301	    $prototype .= $x;
2302	    last;
2303	}
2304    }
2305}
2306
2307# xml_escape: replace <, >, and & in the text stream;
2308#
2309# however, formatting controls that are generated internally/locally in the
2310# kernel-doc script are not escaped here; instead, they begin life like
2311# $blankline_html (4 of '\' followed by a mnemonic + ':'), then these strings
2312# are converted to their mnemonic-expected output, without the 4 * '\' & ':',
2313# just before actual output; (this is done by local_unescape())
2314sub xml_escape($) {
2315	my $text = shift;
2316	if (($output_mode eq "text") || ($output_mode eq "man")) {
2317		return $text;
2318	}
2319	$text =~ s/\&/\\\\\\amp;/g;
2320	$text =~ s/\</\\\\\\lt;/g;
2321	$text =~ s/\>/\\\\\\gt;/g;
2322	return $text;
2323}
2324
2325# convert local escape strings to html
2326# local escape strings look like:  '\\\\menmonic:' (that's 4 backslashes)
2327sub local_unescape($) {
2328	my $text = shift;
2329	if (($output_mode eq "text") || ($output_mode eq "man")) {
2330		return $text;
2331	}
2332	$text =~ s/\\\\\\\\lt:/</g;
2333	$text =~ s/\\\\\\\\gt:/>/g;
2334	return $text;
2335}
2336
2337sub process_file($) {
2338    my $file;
2339    my $identifier;
2340    my $func;
2341    my $descr;
2342    my $in_purpose = 0;
2343    my $initial_section_counter = $section_counter;
2344
2345    if (defined($ENV{'SRCTREE'})) {
2346	$file = "$ENV{'SRCTREE'}" . "/" . "@_";
2347    }
2348    else {
2349	$file = "@_";
2350    }
2351    if (defined($source_map{$file})) {
2352	$file = $source_map{$file};
2353    }
2354
2355    if (!open(IN,"<$file")) {
2356	print STDERR "Error: Cannot open file $file\n";
2357	++$errors;
2358	return;
2359    }
2360
2361    $. = 1;
2362
2363    $section_counter = 0;
2364    while (<IN>) {
2365	while (s/\\\s*$//) {
2366	    $_ .= <IN>;
2367	}
2368	if ($state == 0) {
2369	    if (/$doc_start/o) {
2370		$state = 1;		# next line is always the function name
2371		$in_doc_sect = 0;
2372	    }
2373	} elsif ($state == 1) {	# this line is the function name (always)
2374	    if (/$doc_block/o) {
2375		$state = 4;
2376		$contents = "";
2377		if ( $1 eq "" ) {
2378			$section = $section_intro;
2379		} else {
2380			$section = $1;
2381		}
2382	    }
2383	    elsif (/$doc_decl/o) {
2384		$identifier = $1;
2385		if (/\s*([\w\s]+?)\s*-/) {
2386		    $identifier = $1;
2387		}
2388
2389		$state = 2;
2390		if (/-(.*)/) {
2391		    # strip leading/trailing/multiple spaces
2392		    $descr= $1;
2393		    $descr =~ s/^\s*//;
2394		    $descr =~ s/\s*$//;
2395		    $descr =~ s/\s+/ /g;
2396		    $declaration_purpose = xml_escape($descr);
2397		    $in_purpose = 1;
2398		} else {
2399		    $declaration_purpose = "";
2400		}
2401
2402		if (($declaration_purpose eq "") && $verbose) {
2403			print STDERR "Warning(${file}:$.): missing initial short description on line:\n";
2404			print STDERR $_;
2405			++$warnings;
2406		}
2407
2408		if ($identifier =~ m/^struct/) {
2409		    $decl_type = 'struct';
2410		} elsif ($identifier =~ m/^union/) {
2411		    $decl_type = 'union';
2412		} elsif ($identifier =~ m/^enum/) {
2413		    $decl_type = 'enum';
2414		} elsif ($identifier =~ m/^typedef/) {
2415		    $decl_type = 'typedef';
2416		} else {
2417		    $decl_type = 'function';
2418		}
2419
2420		if ($verbose) {
2421		    print STDERR "Info(${file}:$.): Scanning doc for $identifier\n";
2422		}
2423	    } else {
2424		print STDERR "Warning(${file}:$.): Cannot understand $_ on line $.",
2425		" - I thought it was a doc line\n";
2426		++$warnings;
2427		$state = 0;
2428	    }
2429	} elsif ($state == 2) {	# look for head: lines, and include content
2430	    if (/$doc_sect/o) {
2431		$newsection = $1;
2432		$newcontents = $2;
2433
2434		if (($contents ne "") && ($contents ne "\n")) {
2435		    if (!$in_doc_sect && $verbose) {
2436			print STDERR "Warning(${file}:$.): contents before sections\n";
2437			++$warnings;
2438		    }
2439		    dump_section($file, $section, xml_escape($contents));
2440		    $section = $section_default;
2441		}
2442
2443		$in_doc_sect = 1;
2444		$in_purpose = 0;
2445		$contents = $newcontents;
2446		if ($contents ne "") {
2447		    while ((substr($contents, 0, 1) eq " ") ||
2448			substr($contents, 0, 1) eq "\t") {
2449			    $contents = substr($contents, 1);
2450		    }
2451		    $contents .= "\n";
2452		}
2453		$section = $newsection;
2454	    } elsif (/$doc_end/) {
2455
2456		if (($contents ne "") && ($contents ne "\n")) {
2457		    dump_section($file, $section, xml_escape($contents));
2458		    $section = $section_default;
2459		    $contents = "";
2460		}
2461		# look for doc_com + <text> + doc_end:
2462		if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
2463		    print STDERR "Warning(${file}:$.): suspicious ending line: $_";
2464		    ++$warnings;
2465		}
2466
2467		$prototype = "";
2468		$state = 3;
2469		$brcount = 0;
2470#		print STDERR "end of doc comment, looking for prototype\n";
2471	    } elsif (/$doc_content/) {
2472		# miguel-style comment kludge, look for blank lines after
2473		# @parameter line to signify start of description
2474		if ($1 eq "") {
2475		    if ($section =~ m/^@/ || $section eq $section_context) {
2476			dump_section($file, $section, xml_escape($contents));
2477			$section = $section_default;
2478			$contents = "";
2479		    } else {
2480			$contents .= "\n";
2481		    }
2482		    $in_purpose = 0;
2483		} elsif ($in_purpose == 1) {
2484		    # Continued declaration purpose
2485		    chomp($declaration_purpose);
2486		    $declaration_purpose .= " " . xml_escape($1);
2487		    $declaration_purpose =~ s/\s+/ /g;
2488		} else {
2489		    $contents .= $1 . "\n";
2490		}
2491	    } else {
2492		# i dont know - bad line?  ignore.
2493		print STDERR "Warning(${file}:$.): bad line: $_";
2494		++$warnings;
2495	    }
2496	} elsif ($state == 3) {	# scanning for function '{' (end of prototype)
2497	    if ($decl_type eq 'function') {
2498		process_state3_function($_, $file);
2499	    } else {
2500		process_state3_type($_, $file);
2501	    }
2502	} elsif ($state == 4) {
2503		# Documentation block
2504		if (/$doc_block/) {
2505			dump_doc_section($file, $section, xml_escape($contents));
2506			$contents = "";
2507			$function = "";
2508			%constants = ();
2509			%parameterdescs = ();
2510			%parametertypes = ();
2511			@parameterlist = ();
2512			%sections = ();
2513			@sectionlist = ();
2514			$prototype = "";
2515			if ( $1 eq "" ) {
2516				$section = $section_intro;
2517			} else {
2518				$section = $1;
2519			}
2520		}
2521		elsif (/$doc_end/)
2522		{
2523			dump_doc_section($file, $section, xml_escape($contents));
2524			$contents = "";
2525			$function = "";
2526			%constants = ();
2527			%parameterdescs = ();
2528			%parametertypes = ();
2529			@parameterlist = ();
2530			%sections = ();
2531			@sectionlist = ();
2532			$prototype = "";
2533			$state = 0;
2534		}
2535		elsif (/$doc_content/)
2536		{
2537			if ( $1 eq "" )
2538			{
2539				$contents .= $blankline;
2540			}
2541			else
2542			{
2543				$contents .= $1 . "\n";
2544			}
2545		}
2546	}
2547    }
2548    if ($initial_section_counter == $section_counter) {
2549	print STDERR "Warning(${file}): no structured comments found\n";
2550	if (($function_only == 1) && ($show_not_found == 1)) {
2551	    print STDERR "    Was looking for '$_'.\n" for keys %function_table;
2552	}
2553	if ($output_mode eq "xml") {
2554	    # The template wants at least one RefEntry here; make one.
2555	    print "<refentry>\n";
2556	    print " <refnamediv>\n";
2557	    print "  <refname>\n";
2558	    print "   ${file}\n";
2559	    print "  </refname>\n";
2560	    print "  <refpurpose>\n";
2561	    print "   Document generation inconsistency\n";
2562	    print "  </refpurpose>\n";
2563	    print " </refnamediv>\n";
2564	    print " <refsect1>\n";
2565	    print "  <title>\n";
2566	    print "   Oops\n";
2567	    print "  </title>\n";
2568	    print "  <warning>\n";
2569	    print "   <para>\n";
2570	    print "    The template for this document tried to insert\n";
2571	    print "    the structured comment from the file\n";
2572	    print "    <filename>${file}</filename> at this point,\n";
2573	    print "    but none was found.\n";
2574	    print "    This dummy section is inserted to allow\n";
2575	    print "    generation to continue.\n";
2576	    print "   </para>\n";
2577	    print "  </warning>\n";
2578	    print " </refsect1>\n";
2579	    print "</refentry>\n";
2580	}
2581    }
2582}
2583
2584
2585$kernelversion = get_kernel_version();
2586
2587# generate a sequence of code that will splice in highlighting information
2588# using the s// operator.
2589foreach my $pattern (keys %highlights) {
2590#   print STDERR "scanning pattern:$pattern, highlight:($highlights{$pattern})\n";
2591    $dohighlight .=  "\$contents =~ s:$pattern:$highlights{$pattern}:gs;\n";
2592}
2593
2594# Read the file that maps relative names to absolute names for
2595# separate source and object directories and for shadow trees.
2596if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
2597	my ($relname, $absname);
2598	while(<SOURCE_MAP>) {
2599		chop();
2600		($relname, $absname) = (split())[0..1];
2601		$relname =~ s:^/+::;
2602		$source_map{$relname} = $absname;
2603	}
2604	close(SOURCE_MAP);
2605}
2606
2607foreach (@ARGV) {
2608    chomp;
2609    process_file($_);
2610}
2611if ($verbose && $errors) {
2612  print STDERR "$errors errors\n";
2613}
2614if ($verbose && $warnings) {
2615  print STDERR "$warnings warnings\n";
2616}
2617
2618exit($errors);
2619