2 # SPDX-License-Identifier: GPL-2.0
7 ## Copyright (c) 1998 Michael Zucchi, All Rights Reserved ##
8 ## Copyright (C) 2000, 1 Tim Waugh <twaugh@redhat.com> ##
9 ## Copyright (C) 2001 Simon Huggins ##
10 ## Copyright (C) 2005-2012 Randy Dunlap ##
11 ## Copyright (C) 2012 Dan Luedtke ##
13 ## #define enhancements by Armin Kuster <akuster@mvista.com> ##
14 ## Copyright (c) 2000 MontaVista Software, Inc. ##
16 ## This software falls under the GNU General Public License. ##
17 ## Please read the COPYING file for more information ##
19 # 18/01/2001 - Cleanups
20 # Functions prototyped as foo(void) same as foo()
21 # Stop eval'ing where we don't need to.
24 # 27/06/2001 - Allowed whitespace after initial "/**" and
25 # allowed comments before function declarations.
26 # -- Christian Kreibich <ck@whoop.org>
29 # - add perldoc documentation
30 # - Look more closely at some of the scarier bits :)
32 # 26/05/2001 - Support for separate source and object trees.
34 # Keith Owens <kaos@ocs.com.au>
36 # 23/09/2001 - Added support for typedefs, structs, enums and unions
37 # Support for Context section; can be terminated using empty line
38 # Small fixes (like spaces vs. \s in regex)
39 # -- Tim Jansen <tim@tjansen.de>
41 # 25/07/2012 - Added support for HTML5
42 # -- Dan Luedtke <mail@danrl.de>
45 my $message = <<"EOF";
46 Usage: $0 [OPTION ...] FILE ...
48 Read C language source or header FILEs, extract embedded documentation comments,
49 and print formatted documentation to standard output.
51 The documentation comments are identified by "/**" opening comment mark. See
52 Documentation/doc-guide/kernel-doc.rst for the documentation comment syntax.
54 Output format selection (mutually exclusive):
55 -man Output troff manual page format. This is the default.
56 -rst Output reStructuredText format.
57 -none Do not output documentation, only warnings.
59 Output selection (mutually exclusive):
60 -export Only output documentation for symbols that have been
61 exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL()
62 in any input FILE or -export-file FILE.
63 -internal Only output documentation for symbols that have NOT been
64 exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL()
65 in any input FILE or -export-file FILE.
66 -function NAME Only output documentation for the given function(s)
67 or DOC: section title(s). All other functions and DOC:
68 sections are ignored. May be specified multiple times.
69 -nofunction NAME Do NOT output documentation for the given function(s);
70 only output documentation for the other functions and
71 DOC: sections. May be specified multiple times.
73 Output selection modifiers:
74 -no-doc-sections Do not output DOC: sections.
75 -enable-lineno Enable output of #define LINENO lines. Only works with
76 reStructuredText format.
77 -export-file FILE Specify an additional FILE in which to look for
78 EXPORT_SYMBOL() and EXPORT_SYMBOL_GPL(). To be used with
79 -export or -internal. May be specified multiple times.
82 -v Verbose output, more warnings and other information.
92 # In the following table, (...)? signifies optional structure.
93 # (...)* signifies 0 or more structure elements
95 # * function_name(:)? (- short description)?
96 # (* @parameterx: (description of parameter x)?)*
98 # * (Description:)? (Description of function)?
99 # * (section header: (section description)? )*
102 # So .. the trivial example would be:
108 # If the Description: header tag is omitted, then there must be a blank line
109 # after the last parameter specification.
112 # * my_function - does my stuff
113 # * @my_arg: its mine damnit
115 # * Does my stuff explained.
118 # or, could also use:
120 # * my_function - does my stuff
121 # * @my_arg: its mine damnit
122 # * Description: Does my stuff explained.
126 # Besides functions you can also write documentation for structs, unions,
127 # enums and typedefs. Instead of the function name you must write the name
128 # of the declaration; the struct/union/enum/typedef must always precede
129 # the name. Nesting of declarations is not supported.
130 # Use the argument mechanism to document members or constants.
133 # * struct my_struct - short description
135 # * @b: second member
137 # * Longer description
146 # All descriptions can be multiline, except the short function description.
148 # For really longs structs, you can also describe arguments inside the
149 # body of the struct.
152 # * struct my_struct - short description
154 # * @b: second member
156 # * Longer description
162 # * @c: This is longer description of C
164 # * You can use paragraphs to describe arguments
165 # * using this method.
170 # This should be use only for struct/enum members.
172 # You can also add additional sections. When documenting kernel functions you
173 # should document the "Context:" of the function, e.g. whether the functions
174 # can be called form interrupts. Unlike other sections you can end it with an
176 # A non-void function should have a "Return:" section describing the return
178 # Example-sections should contain the string EXAMPLE so that they are marked
179 # appropriately in DocBook.
183 # * user_function - function that can only be called in user context
184 # * @a: some argument
185 # * Context: !in_interrupt()
189 # * user_function(22);
194 # All descriptive text is further processed, scanning for the following special
195 # patterns, which are highlighted appropriately.
197 # 'funcname()' - function
198 # '$ENVVAR' - environmental variable
199 # '&struct_name' - name of a structure (up to two words including 'struct')
200 # '&struct_name.member' - name of a structure member
201 # '@parameter' - name of a parameter
202 # '%CONST' - name of a constant.
203 # '``LITERAL``' - literal string without any spaces on it.
209 my $anon_struct_union = 0;
211 # match expressions used to find embedded type information
212 my $type_constant = '\b``([^\`]+)``\b';
213 my $type_constant2 = '\%([-_\w]+)';
214 my $type_func = '(\w+)\(\)';
215 my $type_param = '\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
216 my $type_fp_param = '\@(\w+)\(\)'; # Special RST handling for func ptr params
217 my $type_env = '(\$\w+)';
218 my $type_enum = '\&(enum\s*([_\w]+))';
219 my $type_struct = '\&(struct\s*([_\w]+))';
220 my $type_typedef = '\&(typedef\s*([_\w]+))';
221 my $type_union = '\&(union\s*([_\w]+))';
222 my $type_member = '\&([_\w]+)(\.|->)([_\w]+)';
223 my $type_fallback = '\&([_\w]+)';
224 my $type_member_func = $type_member . '\(\)';
226 # Output conversion substitutions.
227 # One for each output format
229 # these are pretty rough
230 my @highlights_man = (
231 [$type_constant, "\$1"],
232 [$type_constant2, "\$1"],
233 [$type_func, "\\\\fB\$1\\\\fP"],
234 [$type_enum, "\\\\fI\$1\\\\fP"],
235 [$type_struct, "\\\\fI\$1\\\\fP"],
236 [$type_typedef, "\\\\fI\$1\\\\fP"],
237 [$type_union, "\\\\fI\$1\\\\fP"],
238 [$type_param, "\\\\fI\$1\\\\fP"],
239 [$type_member, "\\\\fI\$1\$2\$3\\\\fP"],
240 [$type_fallback, "\\\\fI\$1\\\\fP"]
242 my $blankline_man = "";
245 my @highlights_rst = (
246 [$type_constant, "``\$1``"],
247 [$type_constant2, "``\$1``"],
248 # Note: need to escape () to avoid func matching later
249 [$type_member_func, "\\:c\\:type\\:`\$1\$2\$3\\\\(\\\\) <\$1>`"],
250 [$type_member, "\\:c\\:type\\:`\$1\$2\$3 <\$1>`"],
251 [$type_fp_param, "**\$1\\\\(\\\\)**"],
252 [$type_func, "\$1()"],
253 [$type_enum, "\\:c\\:type\\:`\$1 <\$2>`"],
254 [$type_struct, "\\:c\\:type\\:`\$1 <\$2>`"],
255 [$type_typedef, "\\:c\\:type\\:`\$1 <\$2>`"],
256 [$type_union, "\\:c\\:type\\:`\$1 <\$2>`"],
257 # in rst this can refer to any type
258 [$type_fallback, "\\:c\\:type\\:`\$1`"],
259 [$type_param, "**\$1**"]
261 my $blankline_rst = "\n";
269 my $dohighlight = "";
272 my $output_mode = "rst";
273 my $output_preformatted = 0;
274 my $no_doc_sections = 0;
275 my $enable_lineno = 0;
276 my @highlights = @highlights_rst;
277 my $blankline = $blankline_rst;
278 my $modulename = "Kernel API";
281 OUTPUT_ALL => 0, # output all symbols and doc sections
282 OUTPUT_INCLUDE => 1, # output only specified symbols
283 OUTPUT_EXCLUDE => 2, # output everything except specified symbols
284 OUTPUT_EXPORTED => 3, # output exported symbols
285 OUTPUT_INTERNAL => 4, # output non-exported symbols
287 my $output_selection = OUTPUT_ALL;
288 my $show_not_found = 0; # No longer used
290 my @export_file_list;
293 if (defined($ENV{'KBUILD_BUILD_TIMESTAMP'}) &&
294 (my $seconds = `date -d"${ENV{'KBUILD_BUILD_TIMESTAMP'}}" +%s`) ne '') {
295 @build_time = gmtime($seconds);
297 @build_time = localtime;
300 my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
301 'July', 'August', 'September', 'October',
302 'November', 'December')[$build_time[4]] .
303 " " . ($build_time[5]+1900);
305 # Essentially these are globals.
306 # They probably want to be tidied up, made more localised or something.
307 # CAVEAT EMPTOR! Some of the others I localised may not want to be, which
308 # could cause "use of undefined value" or other bugs.
309 my ($function, %function_table, %parametertypes, $declaration_purpose);
310 my $declaration_start_line;
311 my ($type, $declaration_name, $return_type);
312 my ($newsection, $newcontents, $prototype, $brcount, %source_map);
314 if (defined($ENV{'KBUILD_VERBOSE'})) {
315 $verbose = "$ENV{'KBUILD_VERBOSE'}";
318 # Generated docbook code is inserted in a template at a point where
319 # docbook v3.1 requires a non-zero sequence of RefEntry's; see:
320 # http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
321 # We keep track of number of generated entries and generate a dummy
322 # if needs be to ensure the expanded template can be postprocessed
324 my $section_counter = 0;
330 STATE_NORMAL => 0, # normal code
331 STATE_NAME => 1, # looking for function name
332 STATE_BODY_MAYBE => 2, # body - or maybe more description
333 STATE_BODY => 3, # the body of the comment
334 STATE_PROTO => 4, # scanning prototype
335 STATE_DOCBLOCK => 5, # documentation block
336 STATE_INLINE => 6, # gathering documentation outside main block
342 # Inline documentation state
344 STATE_INLINE_NA => 0, # not applicable ($state != STATE_INLINE)
345 STATE_INLINE_NAME => 1, # looking for member name (@foo:)
346 STATE_INLINE_TEXT => 2, # looking for member documentation
347 STATE_INLINE_END => 3, # done
348 STATE_INLINE_ERROR => 4, # error - Comment without header was found.
349 # Spit a warning as it's not
350 # proper kernel-doc and ignore the rest.
352 my $inline_doc_state;
354 #declaration types: can be
355 # 'function', 'struct', 'union', 'enum', 'typedef'
358 my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
360 my $doc_com = '\s*\*\s*';
361 my $doc_com_body = '\s*\* ?';
362 my $doc_decl = $doc_com . '(\w+)';
363 # @params and a strictly limited set of supported section names
364 my $doc_sect = $doc_com .
365 '\s*(\@[.\w]+|\@\.\.\.|description|context|returns?|notes?|examples?)\s*:(.*)';
366 my $doc_content = $doc_com_body . '(.*)';
367 my $doc_block = $doc_com . 'DOC:\s*(.*)?';
368 my $doc_inline_start = '^\s*/\*\*\s*$';
369 my $doc_inline_sect = '\s*\*\s*(@\s*[\w][\w\.]*\s*):(.*)';
370 my $doc_inline_end = '^\s*\*/\s*$';
371 my $doc_inline_oneline = '^\s*/\*\*\s*(@[\w\s]+):\s*(.*)\s*\*/\s*$';
372 my $export_symbol = '^\s*EXPORT_SYMBOL(_GPL)?\s*\(\s*(\w+)\s*\)\s*;';
375 my %parameterdesc_start_lines;
379 my %section_start_lines;
384 my $new_start_line = 0;
386 # the canonical section names. see also $doc_sect above.
387 my $section_default = "Description"; # default section
388 my $section_intro = "Introduction";
389 my $section = $section_default;
390 my $section_context = "Context";
391 my $section_return = "Return";
393 my $undescribed = "-- undescribed --";
397 while ($ARGV[0] =~ m/^--?(.*)/) {
401 $output_mode = "man";
402 @highlights = @highlights_man;
403 $blankline = $blankline_man;
404 } elsif ($cmd eq "rst") {
405 $output_mode = "rst";
406 @highlights = @highlights_rst;
407 $blankline = $blankline_rst;
408 } elsif ($cmd eq "none") {
409 $output_mode = "none";
410 } elsif ($cmd eq "module") { # not needed for XML, inherits from calling document
411 $modulename = shift @ARGV;
412 } elsif ($cmd eq "function") { # to only output specific functions
413 $output_selection = OUTPUT_INCLUDE;
414 $function = shift @ARGV;
415 $function_table{$function} = 1;
416 } elsif ($cmd eq "nofunction") { # output all except specific functions
417 $output_selection = OUTPUT_EXCLUDE;
418 $function = shift @ARGV;
419 $function_table{$function} = 1;
420 } elsif ($cmd eq "export") { # only exported symbols
421 $output_selection = OUTPUT_EXPORTED;
422 %function_table = ();
423 } elsif ($cmd eq "internal") { # only non-exported symbols
424 $output_selection = OUTPUT_INTERNAL;
425 %function_table = ();
426 } elsif ($cmd eq "export-file") {
427 my $file = shift @ARGV;
428 push(@export_file_list, $file);
429 } elsif ($cmd eq "v") {
431 } elsif (($cmd eq "h") || ($cmd eq "help")) {
433 } elsif ($cmd eq 'no-doc-sections') {
434 $no_doc_sections = 1;
435 } elsif ($cmd eq 'enable-lineno') {
437 } elsif ($cmd eq 'show-not-found') {
438 $show_not_found = 1; # A no-op but don't fail
445 # continue execution near EOF;
447 # get kernel version from env
448 sub get_kernel_version() {
449 my $version = 'unknown kernel version';
451 if (defined($ENV{'KERNELVERSION'})) {
452 $version = $ENV{'KERNELVERSION'};
460 if ($enable_lineno && defined($lineno)) {
461 print "#define LINENO " . $lineno . "\n";
465 # dumps section contents to arrays/hashes intended for that purpose.
470 my $contents = join "\n", @_;
472 if ($name =~ m/$type_param/) {
474 $parameterdescs{$name} = $contents;
475 $sectcheck = $sectcheck . $name . " ";
476 $parameterdesc_start_lines{$name} = $new_start_line;
478 } elsif ($name eq "@\.\.\.") {
480 $parameterdescs{$name} = $contents;
481 $sectcheck = $sectcheck . $name . " ";
482 $parameterdesc_start_lines{$name} = $new_start_line;
485 if (defined($sections{$name}) && ($sections{$name} ne "")) {
486 # Only warn on user specified duplicate section names.
487 if ($name ne $section_default) {
488 print STDERR "${file}:$.: warning: duplicate section name '$name'\n";
491 $sections{$name} .= $contents;
493 $sections{$name} = $contents;
494 push @sectionlist, $name;
495 $section_start_lines{$name} = $new_start_line;
502 # dump DOC: section after checking that it should go out
504 sub dump_doc_section {
507 my $contents = join "\n", @_;
509 if ($no_doc_sections) {
513 if (($output_selection == OUTPUT_ALL) ||
514 ($output_selection == OUTPUT_INCLUDE &&
515 defined($function_table{$name})) ||
516 ($output_selection == OUTPUT_EXCLUDE &&
517 !defined($function_table{$name})))
519 dump_section($file, $name, $contents);
520 output_blockhead({'sectionlist' => \@sectionlist,
521 'sections' => \%sections,
522 'module' => $modulename,
523 'content-only' => ($output_selection != OUTPUT_ALL), });
530 # parameterdescs, a hash.
531 # function => "function name"
532 # parameterlist => @list of parameters
533 # parameterdescs => %parameter descriptions
534 # sectionlist => @list of sections
535 # sections => %section descriptions
538 sub output_highlight {
539 my $contents = join "\n",@_;
543 # if (!defined $contents) {
545 # confess "output_highlight got called with no args?\n";
548 # print STDERR "contents b4:$contents\n";
551 # print STDERR "contents af:$contents\n";
553 foreach $line (split "\n", $contents) {
554 if (! $output_preformatted) {
558 if (! $output_preformatted) {
559 print $lineprefix, $blankline;
562 if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
565 print $lineprefix, $line;
573 # output function in man
574 sub output_function_man(%) {
576 my ($parameter, $section);
579 print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
582 print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
584 print ".SH SYNOPSIS\n";
585 if ($args{'functiontype'} ne "") {
586 print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
588 print ".B \"" . $args{'function'} . "\n";
593 foreach my $parameter (@{$args{'parameterlist'}}) {
594 if ($count == $#{$args{'parameterlist'}}) {
597 $type = $args{'parametertypes'}{$parameter};
598 if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
599 # pointer-to-function
600 print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
602 $type =~ s/([^\*])$/$1 /;
603 print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
609 print ".SH ARGUMENTS\n";
610 foreach $parameter (@{$args{'parameterlist'}}) {
611 my $parameter_name = $parameter;
612 $parameter_name =~ s/\[.*//;
614 print ".IP \"" . $parameter . "\" 12\n";
615 output_highlight($args{'parameterdescs'}{$parameter_name});
617 foreach $section (@{$args{'sectionlist'}}) {
618 print ".SH \"", uc $section, "\"\n";
619 output_highlight($args{'sections'}{$section});
625 sub output_enum_man(%) {
627 my ($parameter, $section);
630 print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
633 print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
635 print ".SH SYNOPSIS\n";
636 print "enum " . $args{'enum'} . " {\n";
638 foreach my $parameter (@{$args{'parameterlist'}}) {
639 print ".br\n.BI \" $parameter\"\n";
640 if ($count == $#{$args{'parameterlist'}}) {
650 print ".SH Constants\n";
651 foreach $parameter (@{$args{'parameterlist'}}) {
652 my $parameter_name = $parameter;
653 $parameter_name =~ s/\[.*//;
655 print ".IP \"" . $parameter . "\" 12\n";
656 output_highlight($args{'parameterdescs'}{$parameter_name});
658 foreach $section (@{$args{'sectionlist'}}) {
659 print ".SH \"$section\"\n";
660 output_highlight($args{'sections'}{$section});
665 # output struct in man
666 sub output_struct_man(%) {
668 my ($parameter, $section);
670 print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
673 print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
675 my $declaration = $args{'definition'};
676 $declaration =~ s/\t/ /g;
677 $declaration =~ s/\n/"\n.br\n.BI \"/g;
678 print ".SH SYNOPSIS\n";
679 print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
680 print ".BI \"$declaration\n};\n.br\n\n";
682 print ".SH Members\n";
683 foreach $parameter (@{$args{'parameterlist'}}) {
684 ($parameter =~ /^#/) && next;
686 my $parameter_name = $parameter;
687 $parameter_name =~ s/\[.*//;
689 ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
690 print ".IP \"" . $parameter . "\" 12\n";
691 output_highlight($args{'parameterdescs'}{$parameter_name});
693 foreach $section (@{$args{'sectionlist'}}) {
694 print ".SH \"$section\"\n";
695 output_highlight($args{'sections'}{$section});
700 # output typedef in man
701 sub output_typedef_man(%) {
703 my ($parameter, $section);
705 print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
708 print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
710 foreach $section (@{$args{'sectionlist'}}) {
711 print ".SH \"$section\"\n";
712 output_highlight($args{'sections'}{$section});
716 sub output_blockhead_man(%) {
718 my ($parameter, $section);
721 print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
723 foreach $section (@{$args{'sectionlist'}}) {
724 print ".SH \"$section\"\n";
725 output_highlight($args{'sections'}{$section});
730 # output in restructured text
734 # This could use some work; it's used to output the DOC: sections, and
735 # starts by putting out the name of the doc section itself, but that tends
736 # to duplicate a header already in the template file.
738 sub output_blockhead_rst(%) {
740 my ($parameter, $section);
742 foreach $section (@{$args{'sectionlist'}}) {
743 if ($output_selection != OUTPUT_INCLUDE) {
744 print "**$section**\n\n";
746 print_lineno($section_start_lines{$section});
747 output_highlight_rst($args{'sections'}{$section});
753 # Apply the RST highlights to a sub-block of text.
755 sub highlight_block($) {
756 # The dohighlight kludge requires the text be called $contents
757 my $contents = shift;
764 # Regexes used only here.
766 my $sphinx_literal = '^[^.].*::$';
767 my $sphinx_cblock = '^\.\.\ +code-block::';
769 sub output_highlight_rst {
770 my $input = join "\n",@_;
777 foreach $line (split "\n",$input) {
779 # If we're in a literal block, see if we should drop out
780 # of it. Otherwise pass the line straight through unmunged.
783 if (! ($line =~ /^\s*$/)) {
785 # If this is the first non-blank line in a literal
786 # block we need to figure out what the proper indent is.
788 if ($litprefix eq "") {
790 $litprefix = '^' . $1;
791 $output .= $line . "\n";
792 } elsif (! ($line =~ /$litprefix/)) {
795 $output .= $line . "\n";
798 $output .= $line . "\n";
802 # Not in a literal block (or just dropped out)
805 $block .= $line . "\n";
806 if (($line =~ /$sphinx_literal/) || ($line =~ /$sphinx_cblock/)) {
809 $output .= highlight_block($block);
816 $output .= highlight_block($block);
818 foreach $line (split "\n", $output) {
819 print $lineprefix . $line . "\n";
823 sub output_function_rst(%) {
825 my ($parameter, $section);
826 my $oldprefix = $lineprefix;
829 if ($args{'typedef'}) {
830 print ".. c:type:: ". $args{'function'} . "\n\n";
831 print_lineno($declaration_start_line);
832 print " **Typedef**: ";
834 output_highlight_rst($args{'purpose'});
835 $start = "\n\n**Syntax**\n\n ``";
837 print ".. c:function:: ";
839 if ($args{'functiontype'} ne "") {
840 $start .= $args{'functiontype'} . " " . $args{'function'} . " (";
842 $start .= $args{'function'} . " (";
847 foreach my $parameter (@{$args{'parameterlist'}}) {
852 $type = $args{'parametertypes'}{$parameter};
854 if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
855 # pointer-to-function
856 print $1 . $parameter . ") (" . $2 . ")";
858 print $type . " " . $parameter;
861 if ($args{'typedef'}) {
865 print_lineno($declaration_start_line);
867 output_highlight_rst($args{'purpose'});
871 print "**Parameters**\n\n";
873 foreach $parameter (@{$args{'parameterlist'}}) {
874 my $parameter_name = $parameter;
875 $parameter_name =~ s/\[.*//;
876 $type = $args{'parametertypes'}{$parameter};
879 print "``$type $parameter``\n";
881 print "``$parameter``\n";
884 print_lineno($parameterdesc_start_lines{$parameter_name});
886 if (defined($args{'parameterdescs'}{$parameter_name}) &&
887 $args{'parameterdescs'}{$parameter_name} ne $undescribed) {
888 output_highlight_rst($args{'parameterdescs'}{$parameter_name});
890 print " *undescribed*\n";
895 $lineprefix = $oldprefix;
896 output_section_rst(@_);
899 sub output_section_rst(%) {
902 my $oldprefix = $lineprefix;
905 foreach $section (@{$args{'sectionlist'}}) {
906 print "**$section**\n\n";
907 print_lineno($section_start_lines{$section});
908 output_highlight_rst($args{'sections'}{$section});
912 $lineprefix = $oldprefix;
915 sub output_enum_rst(%) {
918 my $oldprefix = $lineprefix;
920 my $name = "enum " . $args{'enum'};
922 print "\n\n.. c:type:: " . $name . "\n\n";
923 print_lineno($declaration_start_line);
925 output_highlight_rst($args{'purpose'});
928 print "**Constants**\n\n";
930 foreach $parameter (@{$args{'parameterlist'}}) {
931 print "``$parameter``\n";
932 if ($args{'parameterdescs'}{$parameter} ne $undescribed) {
933 output_highlight_rst($args{'parameterdescs'}{$parameter});
935 print " *undescribed*\n";
940 $lineprefix = $oldprefix;
941 output_section_rst(@_);
944 sub output_typedef_rst(%) {
947 my $oldprefix = $lineprefix;
948 my $name = "typedef " . $args{'typedef'};
950 print "\n\n.. c:type:: " . $name . "\n\n";
951 print_lineno($declaration_start_line);
953 output_highlight_rst($args{'purpose'});
956 $lineprefix = $oldprefix;
957 output_section_rst(@_);
960 sub output_struct_rst(%) {
963 my $oldprefix = $lineprefix;
964 my $name = $args{'type'} . " " . $args{'struct'};
966 print "\n\n.. c:type:: " . $name . "\n\n";
967 print_lineno($declaration_start_line);
969 output_highlight_rst($args{'purpose'});
972 print "**Definition**\n\n";
974 my $declaration = $args{'definition'};
975 $declaration =~ s/\t/ /g;
976 print " " . $args{'type'} . " " . $args{'struct'} . " {\n$declaration };\n\n";
978 print "**Members**\n\n";
980 foreach $parameter (@{$args{'parameterlist'}}) {
981 ($parameter =~ /^#/) && next;
983 my $parameter_name = $parameter;
984 $parameter_name =~ s/\[.*//;
986 ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
987 $type = $args{'parametertypes'}{$parameter};
988 print_lineno($parameterdesc_start_lines{$parameter_name});
989 print "``" . $parameter . "``\n";
990 output_highlight_rst($args{'parameterdescs'}{$parameter_name});
995 $lineprefix = $oldprefix;
996 output_section_rst(@_);
999 ## none mode output functions
1001 sub output_function_none(%) {
1004 sub output_enum_none(%) {
1007 sub output_typedef_none(%) {
1010 sub output_struct_none(%) {
1013 sub output_blockhead_none(%) {
1017 # generic output function for all types (function, struct/union, typedef, enum);
1018 # calls the generated, variable output_ function name based on
1019 # functype and output_mode
1020 sub output_declaration {
1023 my $functype = shift;
1024 my $func = "output_${functype}_$output_mode";
1025 if (($output_selection == OUTPUT_ALL) ||
1026 (($output_selection == OUTPUT_INCLUDE ||
1027 $output_selection == OUTPUT_EXPORTED) &&
1028 defined($function_table{$name})) ||
1029 (($output_selection == OUTPUT_EXCLUDE ||
1030 $output_selection == OUTPUT_INTERNAL) &&
1031 !($functype eq "function" && defined($function_table{$name}))))
1039 # generic output function - calls the right one based on current output mode.
1040 sub output_blockhead {
1042 my $func = "output_blockhead_" . $output_mode;
1048 # takes a declaration (struct, union, enum, typedef) and
1049 # invokes the right handler. NOT called for functions.
1050 sub dump_declaration($$) {
1052 my ($prototype, $file) = @_;
1053 my $func = "dump_" . $decl_type;
1057 sub dump_union($$) {
1061 sub dump_struct($$) {
1065 if ($x =~ /(struct|union)\s+(\w+)\s*\{(.*)\}(\s*(__packed|__aligned|____cacheline_aligned_in_smp|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*/) {
1067 $declaration_name = $2;
1070 # ignore members marked private:
1071 $members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gosi;
1072 $members =~ s/\/\*\s*private:.*//gosi;
1074 $members =~ s/\/\*.*?\*\///gos;
1076 $members =~ s/\s*__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)/ /gi;
1077 $members =~ s/\s*__aligned\s*\([^;]*\)/ /gos;
1078 $members =~ s/\s*__packed\s*/ /gos;
1079 $members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos;
1080 $members =~ s/\s*____cacheline_aligned_in_smp/ /gos;
1081 # replace DECLARE_BITMAP
1082 $members =~ s/DECLARE_BITMAP\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
1083 # replace DECLARE_HASHTABLE
1084 $members =~ s/DECLARE_HASHTABLE\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[1 << (($2) - 1)\]/gos;
1085 # replace DECLARE_KFIFO
1086 $members =~ s/DECLARE_KFIFO\s*\(([^,)]+),\s*([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos;
1087 # replace DECLARE_KFIFO_PTR
1088 $members =~ s/DECLARE_KFIFO_PTR\s*\(([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos;
1090 my $declaration = $members;
1092 # Split nested struct/union elements as newer ones
1093 while ($members =~ m/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/) {
1098 foreach my $id(split /,/, $ids) {
1099 $newmember .= "$maintype $id; ";
1102 $id =~ s/^\s*\**(\S+)\s*/$1/;
1103 foreach my $arg (split /;/, $content) {
1104 next if ($arg =~ m/^\s*$/);
1105 if ($arg =~ m/^([^\(]+\(\*?\s*)([\w\.]*)(\s*\).*)/) {
1106 # pointer-to-function
1111 if ($id =~ m/^\s*$/) {
1112 # anonymous struct/union
1113 $newmember .= "$type$name$extra; ";
1115 $newmember .= "$type$id.$name$extra; ";
1123 $arg =~ s/:\s*\d+\s*//g;
1125 $arg =~ s/\[.*\]//g;
1126 # The type may have multiple words,
1127 # and multiple IDs can be defined, like:
1128 # const struct foo, *bar, foobar
1129 # So, we remove spaces when parsing the
1130 # names, in order to match just names
1131 # and commas for the names
1132 $arg =~ s/\s*,\s*/,/g;
1133 if ($arg =~ m/(.*)\s+([\S+,]+)/) {
1137 $newmember .= "$arg; ";
1140 foreach my $name (split /,/, $names) {
1141 $name =~ s/^\s*\**(\S+)\s*/$1/;
1142 next if (($name =~ m/^\s*$/));
1143 if ($id =~ m/^\s*$/) {
1144 # anonymous struct/union
1145 $newmember .= "$type $name; ";
1147 $newmember .= "$type $id.$name; ";
1153 $members =~ s/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/$newmember/;
1156 # Ignore other nested elements, like enums
1157 $members =~ s/(\{[^\{\}]*\})//g;
1159 create_parameterlist($members, ';', $file, $declaration_name);
1160 check_sections($file, $declaration_name, $decl_type, $sectcheck, $struct_actual);
1162 # Adjust declaration for better display
1163 $declaration =~ s/([\{;])/$1\n/g;
1164 $declaration =~ s/\}\s+;/};/g;
1165 # Better handle inlined enums
1166 do {} while ($declaration =~ s/(enum\s+\{[^\}]+),([^\n])/$1,\n$2/);
1168 my @def_args = split /\n/, $declaration;
1171 foreach my $clause (@def_args) {
1172 $clause =~ s/^\s+//;
1173 $clause =~ s/\s+$//;
1174 $clause =~ s/\s+/ /;
1176 $level-- if ($clause =~ m/(\})/ && $level > 1);
1177 if (!($clause =~ m/^\s*#/)) {
1178 $declaration .= "\t" x $level;
1180 $declaration .= "\t" . $clause . "\n";
1181 $level++ if ($clause =~ m/(\{)/ && !($clause =~m/\}/));
1183 output_declaration($declaration_name,
1185 {'struct' => $declaration_name,
1186 'module' => $modulename,
1187 'definition' => $declaration,
1188 'parameterlist' => \@parameterlist,
1189 'parameterdescs' => \%parameterdescs,
1190 'parametertypes' => \%parametertypes,
1191 'sectionlist' => \@sectionlist,
1192 'sections' => \%sections,
1193 'purpose' => $declaration_purpose,
1194 'type' => $decl_type
1198 print STDERR "${file}:$.: error: Cannot parse struct or union!\n";
1204 sub show_warnings($$) {
1205 my $functype = shift;
1208 return 1 if ($output_selection == OUTPUT_ALL);
1210 if ($output_selection == OUTPUT_EXPORTED) {
1211 if (defined($function_table{$name})) {
1217 if ($output_selection == OUTPUT_INTERNAL) {
1218 if (!($functype eq "function" && defined($function_table{$name}))) {
1224 if ($output_selection == OUTPUT_INCLUDE) {
1225 if (defined($function_table{$name})) {
1231 if ($output_selection == OUTPUT_EXCLUDE) {
1232 if (!defined($function_table{$name})) {
1238 die("Please add the new output type at show_warnings()");
1245 $x =~ s@/\*.*?\*/@@gos; # strip comments.
1246 # strip #define macros inside enums
1247 $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos;
1249 if ($x =~ /enum\s+(\w*)\s*\{(.*)\}/) {
1250 $declaration_name = $1;
1254 $members =~ s/\s+$//;
1256 foreach my $arg (split ',', $members) {
1257 $arg =~ s/^\s*(\w+).*/$1/;
1258 push @parameterlist, $arg;
1259 if (!$parameterdescs{$arg}) {
1260 $parameterdescs{$arg} = $undescribed;
1261 if (show_warnings("enum", $declaration_name)) {
1262 print STDERR "${file}:$.: warning: Enum value '$arg' not described in enum '$declaration_name'\n";
1265 $_members{$arg} = 1;
1268 while (my ($k, $v) = each %parameterdescs) {
1269 if (!exists($_members{$k})) {
1270 if (show_warnings("enum", $declaration_name)) {
1271 print STDERR "${file}:$.: warning: Excess enum value '$k' description in '$declaration_name'\n";
1276 output_declaration($declaration_name,
1278 {'enum' => $declaration_name,
1279 'module' => $modulename,
1280 'parameterlist' => \@parameterlist,
1281 'parameterdescs' => \%parameterdescs,
1282 'sectionlist' => \@sectionlist,
1283 'sections' => \%sections,
1284 'purpose' => $declaration_purpose
1288 print STDERR "${file}:$.: error: Cannot parse enum!\n";
1293 sub dump_typedef($$) {
1297 $x =~ s@/\*.*?\*/@@gos; # strip comments.
1299 # Parse function prototypes
1300 if ($x =~ /typedef\s+(\w+)\s*\(\*\s*(\w\S+)\s*\)\s*\((.*)\);/ ||
1301 $x =~ /typedef\s+(\w+)\s*(\w\S+)\s*\s*\((.*)\);/) {
1305 $declaration_name = $2;
1308 create_parameterlist($args, ',', $file, $declaration_name);
1310 output_declaration($declaration_name,
1312 {'function' => $declaration_name,
1314 'module' => $modulename,
1315 'functiontype' => $return_type,
1316 'parameterlist' => \@parameterlist,
1317 'parameterdescs' => \%parameterdescs,
1318 'parametertypes' => \%parametertypes,
1319 'sectionlist' => \@sectionlist,
1320 'sections' => \%sections,
1321 'purpose' => $declaration_purpose
1326 while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
1327 $x =~ s/\(*.\)\s*;$/;/;
1328 $x =~ s/\[*.\]\s*;$/;/;
1331 if ($x =~ /typedef.*\s+(\w+)\s*;/) {
1332 $declaration_name = $1;
1334 output_declaration($declaration_name,
1336 {'typedef' => $declaration_name,
1337 'module' => $modulename,
1338 'sectionlist' => \@sectionlist,
1339 'sections' => \%sections,
1340 'purpose' => $declaration_purpose
1344 print STDERR "${file}:$.: error: Cannot parse typedef!\n";
1349 sub save_struct_actual($) {
1352 # strip all spaces from the actual param so that it looks like one string item
1353 $actual =~ s/\s*//g;
1354 $struct_actual = $struct_actual . $actual . " ";
1357 sub create_parameterlist($$$$) {
1359 my $splitter = shift;
1361 my $declaration_name = shift;
1365 # temporarily replace commas inside function pointer definition
1366 while ($args =~ /(\([^\),]+),/) {
1367 $args =~ s/(\([^\),]+),/$1#/g;
1370 foreach my $arg (split($splitter, $args)) {
1372 $arg =~ s/\/\*.*\*\///;
1373 # strip leading/trailing spaces
1379 # Treat preprocessor directive as a typeless variable just to fill
1380 # corresponding data structures "correctly". Catch it later in
1382 push_parameter($arg, "", $file);
1383 } elsif ($arg =~ m/\(.+\)\s*\(/) {
1384 # pointer-to-function
1386 $arg =~ m/[^\(]+\(\*?\s*([\w\.]*)\s*\)/;
1389 $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
1390 save_struct_actual($param);
1391 push_parameter($param, $type, $file, $declaration_name);
1393 $arg =~ s/\s*:\s*/:/g;
1394 $arg =~ s/\s*\[/\[/g;
1396 my @args = split('\s*,\s*', $arg);
1397 if ($args[0] =~ m/\*/) {
1398 $args[0] =~ s/(\*+)\s*/ $1/;
1402 if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
1404 push(@first_arg, split('\s+', $1));
1405 push(@first_arg, $2);
1407 @first_arg = split('\s+', shift @args);
1410 unshift(@args, pop @first_arg);
1411 $type = join " ", @first_arg;
1413 foreach $param (@args) {
1414 if ($param =~ m/^(\*+)\s*(.*)/) {
1415 save_struct_actual($2);
1416 push_parameter($2, "$type $1", $file, $declaration_name);
1418 elsif ($param =~ m/(.*?):(\d+)/) {
1419 if ($type ne "") { # skip unnamed bit-fields
1420 save_struct_actual($1);
1421 push_parameter($1, "$type:$2", $file, $declaration_name)
1425 save_struct_actual($param);
1426 push_parameter($param, $type, $file, $declaration_name);
1433 sub push_parameter($$$$) {
1437 my $declaration_name = shift;
1439 if (($anon_struct_union == 1) && ($type eq "") &&
1441 return; # ignore the ending }; from anon. struct/union
1444 $anon_struct_union = 0;
1445 $param =~ s/[\[\)].*//;
1447 if ($type eq "" && $param =~ /\.\.\.$/)
1449 if (!$param =~ /\w\.\.\.$/) {
1450 # handles unnamed variable parameters
1453 elsif ($param =~ /\w\.\.\.$/) {
1454 # for named variable parameters of the form `x...`, remove the dots
1455 $param =~ s/\.\.\.$//;
1457 if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
1458 $parameterdescs{$param} = "variable arguments";
1461 elsif ($type eq "" && ($param eq "" or $param eq "void"))
1464 $parameterdescs{void} = "no arguments";
1466 elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
1467 # handle unnamed (anonymous) union or struct:
1470 $param = "{unnamed_" . $param . "}";
1471 $parameterdescs{$param} = "anonymous\n";
1472 $anon_struct_union = 1;
1475 # warn if parameter has no description
1476 # (but ignore ones starting with # as these are not parameters
1477 # but inline preprocessor statements);
1478 # Note: It will also ignore void params and unnamed structs/unions
1479 if (!defined $parameterdescs{$param} && $param !~ /^#/) {
1480 $parameterdescs{$param} = $undescribed;
1482 if (show_warnings($type, $declaration_name) && $param !~ /\./) {
1484 "${file}:$.: warning: Function parameter or member '$param' not described in '$declaration_name'\n";
1489 # strip spaces from $param so that it is one continuous string
1490 # on @parameterlist;
1491 # this fixes a problem where check_sections() cannot find
1492 # a parameter like "addr[6 + 2]" because it actually appears
1493 # as "addr[6", "+", "2]" on the parameter list;
1494 # but it's better to maintain the param string unchanged for output,
1495 # so just weaken the string compare in check_sections() to ignore
1496 # "[blah" in a parameter string;
1497 ###$param =~ s/\s*//g;
1498 push @parameterlist, $param;
1499 $type =~ s/\s\s+/ /g;
1500 $parametertypes{$param} = $type;
1503 sub check_sections($$$$$) {
1504 my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck) = @_;
1505 my @sects = split ' ', $sectcheck;
1506 my @prms = split ' ', $prmscheck;
1509 my $prm_clean; # strip trailing "[array size]" and/or beginning "*"
1511 foreach $sx (0 .. $#sects) {
1513 foreach $px (0 .. $#prms) {
1514 $prm_clean = $prms[$px];
1515 $prm_clean =~ s/\[.*\]//;
1516 $prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
1517 # ignore array size in a parameter string;
1518 # however, the original param string may contain
1519 # spaces, e.g.: addr[6 + 2]
1520 # and this appears in @prms as "addr[6" since the
1521 # parameter list is split at spaces;
1522 # hence just ignore "[..." for the sections check;
1523 $prm_clean =~ s/\[.*//;
1525 ##$prm_clean =~ s/^\**//;
1526 if ($prm_clean eq $sects[$sx]) {
1532 if ($decl_type eq "function") {
1533 print STDERR "${file}:$.: warning: " .
1534 "Excess function parameter " .
1536 "description in '$decl_name'\n";
1544 # Checks the section describing the return value of a function.
1545 sub check_return_section {
1547 my $declaration_name = shift;
1548 my $return_type = shift;
1550 # Ignore an empty return type (It's a macro)
1551 # Ignore functions with a "void" return type. (But don't ignore "void *")
1552 if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) {
1556 if (!defined($sections{$section_return}) ||
1557 $sections{$section_return} eq "") {
1558 print STDERR "${file}:$.: warning: " .
1559 "No description found for return value of " .
1560 "'$declaration_name'\n";
1566 # takes a function prototype and the name of the current file being
1567 # processed and spits out all the details stored in the global
1569 sub dump_function($$) {
1570 my $prototype = shift;
1574 $prototype =~ s/^static +//;
1575 $prototype =~ s/^extern +//;
1576 $prototype =~ s/^asmlinkage +//;
1577 $prototype =~ s/^inline +//;
1578 $prototype =~ s/^__inline__ +//;
1579 $prototype =~ s/^__inline +//;
1580 $prototype =~ s/^__always_inline +//;
1581 $prototype =~ s/^noinline +//;
1582 $prototype =~ s/__init +//;
1583 $prototype =~ s/__init_or_module +//;
1584 $prototype =~ s/__meminit +//;
1585 $prototype =~ s/__must_check +//;
1586 $prototype =~ s/__weak +//;
1587 $prototype =~ s/__sched +//;
1588 $prototype =~ s/__printf\s*\(\s*\d*\s*,\s*\d*\s*\) +//;
1589 my $define = $prototype =~ s/^#\s*define\s+//; #ak added
1590 $prototype =~ s/__attribute__\s*\(\(
1592 [\w\s]++ # attribute name
1593 (?:\([^)]*+\))? # attribute arguments
1594 \s*+,? # optional comma at the end
1598 # Yes, this truly is vile. We are looking for:
1599 # 1. Return type (may be nothing if we're looking at a macro)
1601 # 3. Function parameters.
1603 # All the while we have to watch out for function pointer parameters
1604 # (which IIRC is what the two sections are for), C types (these
1605 # regexps don't even start to express all the possibilities), and
1608 # If you mess with these regexps, it's a good idea to check that
1609 # the following functions' documentation still comes out right:
1610 # - parport_register_device (function pointer parameters)
1611 # - atomic_set (macro)
1612 # - pci_match_device, __copy_to_user (long return type)
1614 if ($define && $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s+/) {
1615 # This is an object-like macro, it has no return type and no parameter
1617 # Function-like macros are not allowed to have spaces between
1618 # declaration_name and opening parenthesis (notice the \s+).
1620 $declaration_name = $2;
1622 } elsif ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1623 $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1624 $prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1625 $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1626 $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1627 $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1628 $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1629 $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1630 $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1631 $prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1632 $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1633 $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1634 $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1635 $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1636 $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1637 $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1638 $prototype =~ m/^(\w+\s+\w+\s*\*+\s*\w+\s*\*+\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/) {
1640 $declaration_name = $2;
1643 create_parameterlist($args, ',', $file, $declaration_name);
1645 print STDERR "${file}:$.: warning: cannot understand function prototype: '$prototype'\n";
1649 my $prms = join " ", @parameterlist;
1650 check_sections($file, $declaration_name, "function", $sectcheck, $prms);
1652 # This check emits a lot of warnings at the moment, because many
1653 # functions don't have a 'Return' doc section. So until the number
1654 # of warnings goes sufficiently down, the check is only performed in
1656 # TODO: always perform the check.
1657 if ($verbose && !$noret) {
1658 check_return_section($file, $declaration_name, $return_type);
1661 output_declaration($declaration_name,
1663 {'function' => $declaration_name,
1664 'module' => $modulename,
1665 'functiontype' => $return_type,
1666 'parameterlist' => \@parameterlist,
1667 'parameterdescs' => \%parameterdescs,
1668 'parametertypes' => \%parametertypes,
1669 'sectionlist' => \@sectionlist,
1670 'sections' => \%sections,
1671 'purpose' => $declaration_purpose
1677 %parameterdescs = ();
1678 %parametertypes = ();
1679 @parameterlist = ();
1683 $struct_actual = "";
1686 $state = STATE_NORMAL;
1687 $inline_doc_state = STATE_INLINE_NA;
1690 sub tracepoint_munge($) {
1692 my $tracepointname = 0;
1693 my $tracepointargs = 0;
1695 if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
1696 $tracepointname = $1;
1698 if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
1699 $tracepointname = $1;
1701 if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
1702 $tracepointname = $2;
1704 $tracepointname =~ s/^\s+//; #strip leading whitespace
1705 if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
1706 $tracepointargs = $1;
1708 if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
1709 print STDERR "${file}:$.: warning: Unrecognized tracepoint format: \n".
1712 $prototype = "static inline void trace_$tracepointname($tracepointargs)";
1716 sub syscall_munge() {
1719 $prototype =~ s@[\r\n]+@ @gos; # strip newlines/CR's
1720 ## if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
1721 if ($prototype =~ m/SYSCALL_DEFINE0/) {
1723 ## $prototype = "long sys_$1(void)";
1726 $prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
1727 if ($prototype =~ m/long (sys_.*?),/) {
1728 $prototype =~ s/,/\(/;
1730 $prototype =~ s/\)/\(void\)/;
1733 # now delete all of the odd-number commas in $prototype
1734 # so that arg types & arg names don't have a comma between them
1736 my $len = length($prototype);
1738 $len = 0; # skip the for-loop
1740 for (my $ix = 0; $ix < $len; $ix++) {
1741 if (substr($prototype, $ix, 1) eq ',') {
1743 if ($count % 2 == 1) {
1744 substr($prototype, $ix, 1) = ' ';
1750 sub process_proto_function($$) {
1754 $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1756 if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
1759 elsif ($x =~ /([^\{]*)/) {
1763 if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
1764 $prototype =~ s@/\*.*?\*/@@gos; # strip comments.
1765 $prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1766 $prototype =~ s@^\s+@@gos; # strip leading spaces
1767 if ($prototype =~ /SYSCALL_DEFINE/) {
1770 if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
1771 $prototype =~ /DEFINE_SINGLE_EVENT/)
1773 tracepoint_munge($file);
1775 dump_function($prototype, $file);
1780 sub process_proto_type($$) {
1784 $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1785 $x =~ s@^\s+@@gos; # strip leading spaces
1786 $x =~ s@\s+$@@gos; # strip trailing spaces
1787 $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1790 # To distinguish preprocessor directive from regular declaration later.
1795 if ( $x =~ /([^\{\};]*)([\{\};])(.*)/ ) {
1796 if( length $prototype ) {
1799 $prototype .= $1 . $2;
1800 ($2 eq '{') && $brcount++;
1801 ($2 eq '}') && $brcount--;
1802 if (($2 eq ';') && ($brcount == 0)) {
1803 dump_declaration($prototype, $file);
1816 sub map_filename($) {
1818 my ($orig_file) = @_;
1820 if (defined($ENV{'SRCTREE'})) {
1821 $file = "$ENV{'SRCTREE'}" . "/" . $orig_file;
1826 if (defined($source_map{$file})) {
1827 $file = $source_map{$file};
1833 sub process_export_file($) {
1834 my ($orig_file) = @_;
1835 my $file = map_filename($orig_file);
1837 if (!open(IN,"<$file")) {
1838 print STDERR "Error: Cannot open file $file\n";
1844 if (/$export_symbol/) {
1845 $function_table{$2} = 1;
1853 # Parsers for the various processing states.
1855 # STATE_NORMAL: looking for the /** to begin everything.
1857 sub process_normal() {
1858 if (/$doc_start/o) {
1859 $state = STATE_NAME; # next line is always the function name
1861 $declaration_start_line = $. + 1;
1866 # STATE_NAME: Looking for the "name - description" line
1868 sub process_name($$) {
1873 if (/$doc_block/o) {
1874 $state = STATE_DOCBLOCK;
1876 $new_start_line = $. + 1;
1879 $section = $section_intro;
1884 elsif (/$doc_decl/o) {
1886 if (/\s*([\w\s]+?)(\(\))?\s*-/) {
1890 $state = STATE_BODY;
1891 # if there's no @param blocks need to set up default section
1894 $section = $section_default;
1895 $new_start_line = $. + 1;
1897 # strip leading/trailing/multiple spaces
1901 $descr =~ s/\s+/ /g;
1902 $declaration_purpose = $descr;
1903 $state = STATE_BODY_MAYBE;
1905 $declaration_purpose = "";
1908 if (($declaration_purpose eq "") && $verbose) {
1909 print STDERR "${file}:$.: warning: missing initial short description on line:\n";
1914 if ($identifier =~ m/^struct\b/) {
1915 $decl_type = 'struct';
1916 } elsif ($identifier =~ m/^union\b/) {
1917 $decl_type = 'union';
1918 } elsif ($identifier =~ m/^enum\b/) {
1919 $decl_type = 'enum';
1920 } elsif ($identifier =~ m/^typedef\b/) {
1921 $decl_type = 'typedef';
1923 $decl_type = 'function';
1927 print STDERR "${file}:$.: info: Scanning doc for $identifier\n";
1930 print STDERR "${file}:$.: warning: Cannot understand $_ on line $.",
1931 " - I thought it was a doc line\n";
1933 $state = STATE_NORMAL;
1939 # STATE_BODY and STATE_BODY_MAYBE: the bulk of a kerneldoc comment.
1941 sub process_body($$) {
1944 # Until all named variable macro parameters are
1945 # documented using the bare name (`x`) rather than with
1946 # dots (`x...`), strip the dots:
1947 if ($section =~ /\w\.\.\.$/) {
1948 $section =~ s/\.\.\.$//;
1951 print STDERR "${file}:$.: warning: Variable macro arguments should be documented without dots\n";
1956 if (/$doc_sect/i) { # case insensitive for supported section names
1960 # map the supported section names to the canonical names
1961 if ($newsection =~ m/^description$/i) {
1962 $newsection = $section_default;
1963 } elsif ($newsection =~ m/^context$/i) {
1964 $newsection = $section_context;
1965 } elsif ($newsection =~ m/^returns?$/i) {
1966 $newsection = $section_return;
1967 } elsif ($newsection =~ m/^\@return$/) {
1968 # special: @return is a section, not a param description
1969 $newsection = $section_return;
1972 if (($contents ne "") && ($contents ne "\n")) {
1973 if (!$in_doc_sect && $verbose) {
1974 print STDERR "${file}:$.: warning: contents before sections\n";
1977 dump_section($file, $section, $contents);
1978 $section = $section_default;
1982 $state = STATE_BODY;
1983 $contents = $newcontents;
1984 $new_start_line = $.;
1985 while (substr($contents, 0, 1) eq " ") {
1986 $contents = substr($contents, 1);
1988 if ($contents ne "") {
1991 $section = $newsection;
1992 $leading_space = undef;
1993 } elsif (/$doc_end/) {
1994 if (($contents ne "") && ($contents ne "\n")) {
1995 dump_section($file, $section, $contents);
1996 $section = $section_default;
1999 # look for doc_com + <text> + doc_end:
2000 if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
2001 print STDERR "${file}:$.: warning: suspicious ending line: $_";
2006 $state = STATE_PROTO;
2008 } elsif (/$doc_content/) {
2009 # miguel-style comment kludge, look for blank lines after
2010 # @parameter line to signify start of description
2012 if ($section =~ m/^@/ || $section eq $section_context) {
2013 dump_section($file, $section, $contents);
2014 $section = $section_default;
2016 $new_start_line = $.;
2020 $state = STATE_BODY;
2021 } elsif ($state == STATE_BODY_MAYBE) {
2022 # Continued declaration purpose
2023 chomp($declaration_purpose);
2024 $declaration_purpose .= " " . $1;
2025 $declaration_purpose =~ s/\s+/ /g;
2028 if ($section =~ m/^@/ || $section eq $section_context) {
2029 if (!defined $leading_space) {
2030 if ($cont =~ m/^(\s+)/) {
2031 $leading_space = $1;
2033 $leading_space = "";
2036 $cont =~ s/^$leading_space//;
2038 $contents .= $cont . "\n";
2041 # i dont know - bad line? ignore.
2042 print STDERR "${file}:$.: warning: bad line: $_";
2049 # STATE_PROTO: reading a function/whatever prototype.
2051 sub process_proto($$) {
2054 if (/$doc_inline_oneline/) {
2057 if ($contents ne "") {
2059 dump_section($file, $section, $contents);
2060 $section = $section_default;
2063 } elsif (/$doc_inline_start/) {
2064 $state = STATE_INLINE;
2065 $inline_doc_state = STATE_INLINE_NAME;
2066 } elsif ($decl_type eq 'function') {
2067 process_proto_function($_, $file);
2069 process_proto_type($_, $file);
2074 # STATE_DOCBLOCK: within a DOC: block.
2076 sub process_docblock($$) {
2080 dump_doc_section($file, $section, $contents);
2081 $section = $section_default;
2084 %parameterdescs = ();
2085 %parametertypes = ();
2086 @parameterlist = ();
2090 $state = STATE_NORMAL;
2091 } elsif (/$doc_content/) {
2093 $contents .= $blankline;
2095 $contents .= $1 . "\n";
2101 # STATE_INLINE: docbook comments within a prototype.
2103 sub process_inline($$) {
2106 # First line (state 1) needs to be a @parameter
2107 if ($inline_doc_state == STATE_INLINE_NAME && /$doc_inline_sect/o) {
2110 $new_start_line = $.;
2111 if ($contents ne "") {
2112 while (substr($contents, 0, 1) eq " ") {
2113 $contents = substr($contents, 1);
2117 $inline_doc_state = STATE_INLINE_TEXT;
2118 # Documentation block end */
2119 } elsif (/$doc_inline_end/) {
2120 if (($contents ne "") && ($contents ne "\n")) {
2121 dump_section($file, $section, $contents);
2122 $section = $section_default;
2125 $state = STATE_PROTO;
2126 $inline_doc_state = STATE_INLINE_NA;
2128 } elsif (/$doc_content/) {
2129 if ($inline_doc_state == STATE_INLINE_TEXT) {
2130 $contents .= $1 . "\n";
2131 # nuke leading blank lines
2132 if ($contents =~ /^\s*$/) {
2135 } elsif ($inline_doc_state == STATE_INLINE_NAME) {
2136 $inline_doc_state = STATE_INLINE_ERROR;
2137 print STDERR "${file}:$.: warning: ";
2138 print STDERR "Incorrect use of kernel-doc format: $_";
2145 sub process_file($) {
2147 my $initial_section_counter = $section_counter;
2148 my ($orig_file) = @_;
2150 $file = map_filename($orig_file);
2152 if (!open(IN,"<$file")) {
2153 print STDERR "Error: Cannot open file $file\n";
2160 $section_counter = 0;
2162 while (s/\\\s*$//) {
2165 # Replace tabs by spaces
2166 while ($_ =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {};
2167 # Hand this line to the appropriate state handler
2168 if ($state == STATE_NORMAL) {
2170 } elsif ($state == STATE_NAME) {
2171 process_name($file, $_);
2172 } elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE) {
2173 process_body($file, $_);
2174 } elsif ($state == STATE_INLINE) { # scanning for inline parameters
2175 process_inline($file, $_);
2176 } elsif ($state == STATE_PROTO) {
2177 process_proto($file, $_);
2178 } elsif ($state == STATE_DOCBLOCK) {
2179 process_docblock($file, $_);
2183 # Make sure we got something interesting.
2184 if ($initial_section_counter == $section_counter && $
2185 output_mode ne "none") {
2186 if ($output_selection == OUTPUT_INCLUDE) {
2187 print STDERR "${file}:1: warning: '$_' not found\n"
2188 for keys %function_table;
2191 print STDERR "${file}:1: warning: no structured comments found\n";
2197 $kernelversion = get_kernel_version();
2199 # generate a sequence of code that will splice in highlighting information
2200 # using the s// operator.
2201 for (my $k = 0; $k < @highlights; $k++) {
2202 my $pattern = $highlights[$k][0];
2203 my $result = $highlights[$k][1];
2204 # print STDERR "scanning pattern:$pattern, highlight:($result)\n";
2205 $dohighlight .= "\$contents =~ s:$pattern:$result:gs;\n";
2208 # Read the file that maps relative names to absolute names for
2209 # separate source and object directories and for shadow trees.
2210 if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
2211 my ($relname, $absname);
2212 while(<SOURCE_MAP>) {
2214 ($relname, $absname) = (split())[0..1];
2215 $relname =~ s:^/+::;
2216 $source_map{$relname} = $absname;
2221 if ($output_selection == OUTPUT_EXPORTED ||
2222 $output_selection == OUTPUT_INTERNAL) {
2224 push(@export_file_list, @ARGV);
2226 foreach (@export_file_list) {
2228 process_export_file($_);
2236 if ($verbose && $errors) {
2237 print STDERR "$errors errors\n";
2239 if ($verbose && $warnings) {
2240 print STDERR "$warnings warnings\n";
2243 exit($output_mode eq "none" ? 0 : $errors);