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_param_ref = '([\!]?)\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
217 my $type_fp_param = '\@(\w+)\(\)'; # Special RST handling for func ptr params
218 my $type_fp_param2 = '\@(\w+->\S+)\(\)'; # Special RST handling for structs with func ptr params
219 my $type_env = '(\$\w+)';
220 my $type_enum = '\&(enum\s*([_\w]+))';
221 my $type_struct = '\&(struct\s*([_\w]+))';
222 my $type_typedef = '\&(typedef\s*([_\w]+))';
223 my $type_union = '\&(union\s*([_\w]+))';
224 my $type_member = '\&([_\w]+)(\.|->)([_\w]+)';
225 my $type_fallback = '\&([_\w]+)';
226 my $type_member_func = $type_member . '\(\)';
228 # Output conversion substitutions.
229 # One for each output format
231 # these are pretty rough
232 my @highlights_man = (
233 [$type_constant, "\$1"],
234 [$type_constant2, "\$1"],
235 [$type_func, "\\\\fB\$1\\\\fP"],
236 [$type_enum, "\\\\fI\$1\\\\fP"],
237 [$type_struct, "\\\\fI\$1\\\\fP"],
238 [$type_typedef, "\\\\fI\$1\\\\fP"],
239 [$type_union, "\\\\fI\$1\\\\fP"],
240 [$type_param, "\\\\fI\$1\\\\fP"],
241 [$type_param_ref, "\\\\fI\$1\$2\\\\fP"],
242 [$type_member, "\\\\fI\$1\$2\$3\\\\fP"],
243 [$type_fallback, "\\\\fI\$1\\\\fP"]
245 my $blankline_man = "";
248 my @highlights_rst = (
249 [$type_constant, "``\$1``"],
250 [$type_constant2, "``\$1``"],
251 # Note: need to escape () to avoid func matching later
252 [$type_member_func, "\\:c\\:type\\:`\$1\$2\$3\\\\(\\\\) <\$1>`"],
253 [$type_member, "\\:c\\:type\\:`\$1\$2\$3 <\$1>`"],
254 [$type_fp_param, "**\$1\\\\(\\\\)**"],
255 [$type_fp_param2, "**\$1\\\\(\\\\)**"],
256 [$type_func, "\$1()"],
257 [$type_enum, "\\:c\\:type\\:`\$1 <\$2>`"],
258 [$type_struct, "\\:c\\:type\\:`\$1 <\$2>`"],
259 [$type_typedef, "\\:c\\:type\\:`\$1 <\$2>`"],
260 [$type_union, "\\:c\\:type\\:`\$1 <\$2>`"],
261 # in rst this can refer to any type
262 [$type_fallback, "\\:c\\:type\\:`\$1`"],
263 [$type_param_ref, "**\$1\$2**"]
265 my $blankline_rst = "\n";
273 my $dohighlight = "";
276 my $output_mode = "rst";
277 my $output_preformatted = 0;
278 my $no_doc_sections = 0;
279 my $enable_lineno = 0;
280 my @highlights = @highlights_rst;
281 my $blankline = $blankline_rst;
282 my $modulename = "Kernel API";
285 OUTPUT_ALL => 0, # output all symbols and doc sections
286 OUTPUT_INCLUDE => 1, # output only specified symbols
287 OUTPUT_EXCLUDE => 2, # output everything except specified symbols
288 OUTPUT_EXPORTED => 3, # output exported symbols
289 OUTPUT_INTERNAL => 4, # output non-exported symbols
291 my $output_selection = OUTPUT_ALL;
292 my $show_not_found = 0; # No longer used
294 my @export_file_list;
297 if (defined($ENV{'KBUILD_BUILD_TIMESTAMP'}) &&
298 (my $seconds = `date -d"${ENV{'KBUILD_BUILD_TIMESTAMP'}}" +%s`) ne '') {
299 @build_time = gmtime($seconds);
301 @build_time = localtime;
304 my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
305 'July', 'August', 'September', 'October',
306 'November', 'December')[$build_time[4]] .
307 " " . ($build_time[5]+1900);
309 # Essentially these are globals.
310 # They probably want to be tidied up, made more localised or something.
311 # CAVEAT EMPTOR! Some of the others I localised may not want to be, which
312 # could cause "use of undefined value" or other bugs.
313 my ($function, %function_table, %parametertypes, $declaration_purpose);
314 my $declaration_start_line;
315 my ($type, $declaration_name, $return_type);
316 my ($newsection, $newcontents, $prototype, $brcount, %source_map);
318 if (defined($ENV{'KBUILD_VERBOSE'})) {
319 $verbose = "$ENV{'KBUILD_VERBOSE'}";
322 # Generated docbook code is inserted in a template at a point where
323 # docbook v3.1 requires a non-zero sequence of RefEntry's; see:
324 # https://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
325 # We keep track of number of generated entries and generate a dummy
326 # if needs be to ensure the expanded template can be postprocessed
328 my $section_counter = 0;
334 STATE_NORMAL => 0, # normal code
335 STATE_NAME => 1, # looking for function name
336 STATE_BODY_MAYBE => 2, # body - or maybe more description
337 STATE_BODY => 3, # the body of the comment
338 STATE_BODY_WITH_BLANK_LINE => 4, # the body, which has a blank line
339 STATE_PROTO => 5, # scanning prototype
340 STATE_DOCBLOCK => 6, # documentation block
341 STATE_INLINE => 7, # gathering doc outside main block
347 # Inline documentation state
349 STATE_INLINE_NA => 0, # not applicable ($state != STATE_INLINE)
350 STATE_INLINE_NAME => 1, # looking for member name (@foo:)
351 STATE_INLINE_TEXT => 2, # looking for member documentation
352 STATE_INLINE_END => 3, # done
353 STATE_INLINE_ERROR => 4, # error - Comment without header was found.
354 # Spit a warning as it's not
355 # proper kernel-doc and ignore the rest.
357 my $inline_doc_state;
359 #declaration types: can be
360 # 'function', 'struct', 'union', 'enum', 'typedef'
363 my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
365 my $doc_com = '\s*\*\s*';
366 my $doc_com_body = '\s*\* ?';
367 my $doc_decl = $doc_com . '(\w+)';
368 # @params and a strictly limited set of supported section names
369 my $doc_sect = $doc_com .
370 '\s*(\@[.\w]+|\@\.\.\.|description|context|returns?|notes?|examples?)\s*:(.*)';
371 my $doc_content = $doc_com_body . '(.*)';
372 my $doc_block = $doc_com . 'DOC:\s*(.*)?';
373 my $doc_inline_start = '^\s*/\*\*\s*$';
374 my $doc_inline_sect = '\s*\*\s*(@\s*[\w][\w\.]*\s*):(.*)';
375 my $doc_inline_end = '^\s*\*/\s*$';
376 my $doc_inline_oneline = '^\s*/\*\*\s*(@[\w\s]+):\s*(.*)\s*\*/\s*$';
377 my $export_symbol = '^\s*EXPORT_SYMBOL(_GPL)?\s*\(\s*(\w+)\s*\)\s*;';
380 my %parameterdesc_start_lines;
384 my %section_start_lines;
389 my $new_start_line = 0;
391 # the canonical section names. see also $doc_sect above.
392 my $section_default = "Description"; # default section
393 my $section_intro = "Introduction";
394 my $section = $section_default;
395 my $section_context = "Context";
396 my $section_return = "Return";
398 my $undescribed = "-- undescribed --";
402 while ($ARGV[0] =~ m/^--?(.*)/) {
406 $output_mode = "man";
407 @highlights = @highlights_man;
408 $blankline = $blankline_man;
409 } elsif ($cmd eq "rst") {
410 $output_mode = "rst";
411 @highlights = @highlights_rst;
412 $blankline = $blankline_rst;
413 } elsif ($cmd eq "none") {
414 $output_mode = "none";
415 } elsif ($cmd eq "module") { # not needed for XML, inherits from calling document
416 $modulename = shift @ARGV;
417 } elsif ($cmd eq "function") { # to only output specific functions
418 $output_selection = OUTPUT_INCLUDE;
419 $function = shift @ARGV;
420 $function_table{$function} = 1;
421 } elsif ($cmd eq "nofunction") { # output all except specific functions
422 $output_selection = OUTPUT_EXCLUDE;
423 $function = shift @ARGV;
424 $function_table{$function} = 1;
425 } elsif ($cmd eq "export") { # only exported symbols
426 $output_selection = OUTPUT_EXPORTED;
427 %function_table = ();
428 } elsif ($cmd eq "internal") { # only non-exported symbols
429 $output_selection = OUTPUT_INTERNAL;
430 %function_table = ();
431 } elsif ($cmd eq "export-file") {
432 my $file = shift @ARGV;
433 push(@export_file_list, $file);
434 } elsif ($cmd eq "v") {
436 } elsif (($cmd eq "h") || ($cmd eq "help")) {
438 } elsif ($cmd eq 'no-doc-sections') {
439 $no_doc_sections = 1;
440 } elsif ($cmd eq 'enable-lineno') {
442 } elsif ($cmd eq 'show-not-found') {
443 $show_not_found = 1; # A no-op but don't fail
450 # continue execution near EOF;
452 # get kernel version from env
453 sub get_kernel_version() {
454 my $version = 'unknown kernel version';
456 if (defined($ENV{'KERNELVERSION'})) {
457 $version = $ENV{'KERNELVERSION'};
465 if ($enable_lineno && defined($lineno)) {
466 print "#define LINENO " . $lineno . "\n";
470 # dumps section contents to arrays/hashes intended for that purpose.
475 my $contents = join "\n", @_;
477 if ($name =~ m/$type_param/) {
479 $parameterdescs{$name} = $contents;
480 $sectcheck = $sectcheck . $name . " ";
481 $parameterdesc_start_lines{$name} = $new_start_line;
483 } elsif ($name eq "@\.\.\.") {
485 $parameterdescs{$name} = $contents;
486 $sectcheck = $sectcheck . $name . " ";
487 $parameterdesc_start_lines{$name} = $new_start_line;
490 if (defined($sections{$name}) && ($sections{$name} ne "")) {
491 # Only warn on user specified duplicate section names.
492 if ($name ne $section_default) {
493 print STDERR "${file}:$.: warning: duplicate section name '$name'\n";
496 $sections{$name} .= $contents;
498 $sections{$name} = $contents;
499 push @sectionlist, $name;
500 $section_start_lines{$name} = $new_start_line;
507 # dump DOC: section after checking that it should go out
509 sub dump_doc_section {
512 my $contents = join "\n", @_;
514 if ($no_doc_sections) {
518 if (($output_selection == OUTPUT_ALL) ||
519 ($output_selection == OUTPUT_INCLUDE &&
520 defined($function_table{$name})) ||
521 ($output_selection == OUTPUT_EXCLUDE &&
522 !defined($function_table{$name})))
524 dump_section($file, $name, $contents);
525 output_blockhead({'sectionlist' => \@sectionlist,
526 'sections' => \%sections,
527 'module' => $modulename,
528 'content-only' => ($output_selection != OUTPUT_ALL), });
535 # parameterdescs, a hash.
536 # function => "function name"
537 # parameterlist => @list of parameters
538 # parameterdescs => %parameter descriptions
539 # sectionlist => @list of sections
540 # sections => %section descriptions
543 sub output_highlight {
544 my $contents = join "\n",@_;
548 # if (!defined $contents) {
550 # confess "output_highlight got called with no args?\n";
553 # print STDERR "contents b4:$contents\n";
556 # print STDERR "contents af:$contents\n";
558 foreach $line (split "\n", $contents) {
559 if (! $output_preformatted) {
563 if (! $output_preformatted) {
564 print $lineprefix, $blankline;
567 if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
570 print $lineprefix, $line;
578 # output function in man
579 sub output_function_man(%) {
581 my ($parameter, $section);
584 print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
587 print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
589 print ".SH SYNOPSIS\n";
590 if ($args{'functiontype'} ne "") {
591 print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
593 print ".B \"" . $args{'function'} . "\n";
598 foreach my $parameter (@{$args{'parameterlist'}}) {
599 if ($count == $#{$args{'parameterlist'}}) {
602 $type = $args{'parametertypes'}{$parameter};
603 if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
604 # pointer-to-function
605 print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
607 $type =~ s/([^\*])$/$1 /;
608 print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
614 print ".SH ARGUMENTS\n";
615 foreach $parameter (@{$args{'parameterlist'}}) {
616 my $parameter_name = $parameter;
617 $parameter_name =~ s/\[.*//;
619 print ".IP \"" . $parameter . "\" 12\n";
620 output_highlight($args{'parameterdescs'}{$parameter_name});
622 foreach $section (@{$args{'sectionlist'}}) {
623 print ".SH \"", uc $section, "\"\n";
624 output_highlight($args{'sections'}{$section});
630 sub output_enum_man(%) {
632 my ($parameter, $section);
635 print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
638 print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
640 print ".SH SYNOPSIS\n";
641 print "enum " . $args{'enum'} . " {\n";
643 foreach my $parameter (@{$args{'parameterlist'}}) {
644 print ".br\n.BI \" $parameter\"\n";
645 if ($count == $#{$args{'parameterlist'}}) {
655 print ".SH Constants\n";
656 foreach $parameter (@{$args{'parameterlist'}}) {
657 my $parameter_name = $parameter;
658 $parameter_name =~ s/\[.*//;
660 print ".IP \"" . $parameter . "\" 12\n";
661 output_highlight($args{'parameterdescs'}{$parameter_name});
663 foreach $section (@{$args{'sectionlist'}}) {
664 print ".SH \"$section\"\n";
665 output_highlight($args{'sections'}{$section});
670 # output struct in man
671 sub output_struct_man(%) {
673 my ($parameter, $section);
675 print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
678 print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
680 my $declaration = $args{'definition'};
681 $declaration =~ s/\t/ /g;
682 $declaration =~ s/\n/"\n.br\n.BI \"/g;
683 print ".SH SYNOPSIS\n";
684 print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
685 print ".BI \"$declaration\n};\n.br\n\n";
687 print ".SH Members\n";
688 foreach $parameter (@{$args{'parameterlist'}}) {
689 ($parameter =~ /^#/) && next;
691 my $parameter_name = $parameter;
692 $parameter_name =~ s/\[.*//;
694 ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
695 print ".IP \"" . $parameter . "\" 12\n";
696 output_highlight($args{'parameterdescs'}{$parameter_name});
698 foreach $section (@{$args{'sectionlist'}}) {
699 print ".SH \"$section\"\n";
700 output_highlight($args{'sections'}{$section});
705 # output typedef in man
706 sub output_typedef_man(%) {
708 my ($parameter, $section);
710 print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
713 print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
715 foreach $section (@{$args{'sectionlist'}}) {
716 print ".SH \"$section\"\n";
717 output_highlight($args{'sections'}{$section});
721 sub output_blockhead_man(%) {
723 my ($parameter, $section);
726 print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
728 foreach $section (@{$args{'sectionlist'}}) {
729 print ".SH \"$section\"\n";
730 output_highlight($args{'sections'}{$section});
735 # output in restructured text
739 # This could use some work; it's used to output the DOC: sections, and
740 # starts by putting out the name of the doc section itself, but that tends
741 # to duplicate a header already in the template file.
743 sub output_blockhead_rst(%) {
745 my ($parameter, $section);
747 foreach $section (@{$args{'sectionlist'}}) {
748 if ($output_selection != OUTPUT_INCLUDE) {
749 print "**$section**\n\n";
751 print_lineno($section_start_lines{$section});
752 output_highlight_rst($args{'sections'}{$section});
758 # Apply the RST highlights to a sub-block of text.
760 sub highlight_block($) {
761 # The dohighlight kludge requires the text be called $contents
762 my $contents = shift;
769 # Regexes used only here.
771 my $sphinx_literal = '^[^.].*::$';
772 my $sphinx_cblock = '^\.\.\ +code-block::';
774 sub output_highlight_rst {
775 my $input = join "\n",@_;
782 foreach $line (split "\n",$input) {
784 # If we're in a literal block, see if we should drop out
785 # of it. Otherwise pass the line straight through unmunged.
788 if (! ($line =~ /^\s*$/)) {
790 # If this is the first non-blank line in a literal
791 # block we need to figure out what the proper indent is.
793 if ($litprefix eq "") {
795 $litprefix = '^' . $1;
796 $output .= $line . "\n";
797 } elsif (! ($line =~ /$litprefix/)) {
800 $output .= $line . "\n";
803 $output .= $line . "\n";
807 # Not in a literal block (or just dropped out)
810 $block .= $line . "\n";
811 if (($line =~ /$sphinx_literal/) || ($line =~ /$sphinx_cblock/)) {
814 $output .= highlight_block($block);
821 $output .= highlight_block($block);
823 foreach $line (split "\n", $output) {
824 print $lineprefix . $line . "\n";
828 sub output_function_rst(%) {
830 my ($parameter, $section);
831 my $oldprefix = $lineprefix;
834 if ($args{'typedef'}) {
835 print ".. c:type:: ". $args{'function'} . "\n\n";
836 print_lineno($declaration_start_line);
837 print " **Typedef**: ";
839 output_highlight_rst($args{'purpose'});
840 $start = "\n\n**Syntax**\n\n ``";
842 print ".. c:function:: ";
844 if ($args{'functiontype'} ne "") {
845 $start .= $args{'functiontype'} . " " . $args{'function'} . " (";
847 $start .= $args{'function'} . " (";
852 foreach my $parameter (@{$args{'parameterlist'}}) {
857 $type = $args{'parametertypes'}{$parameter};
859 if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
860 # pointer-to-function
861 print $1 . $parameter . ") (" . $2 . ")";
863 print $type . " " . $parameter;
866 if ($args{'typedef'}) {
870 print_lineno($declaration_start_line);
872 output_highlight_rst($args{'purpose'});
876 print "**Parameters**\n\n";
878 foreach $parameter (@{$args{'parameterlist'}}) {
879 my $parameter_name = $parameter;
880 $parameter_name =~ s/\[.*//;
881 $type = $args{'parametertypes'}{$parameter};
884 print "``$type $parameter``\n";
886 print "``$parameter``\n";
889 print_lineno($parameterdesc_start_lines{$parameter_name});
891 if (defined($args{'parameterdescs'}{$parameter_name}) &&
892 $args{'parameterdescs'}{$parameter_name} ne $undescribed) {
893 output_highlight_rst($args{'parameterdescs'}{$parameter_name});
895 print " *undescribed*\n";
900 $lineprefix = $oldprefix;
901 output_section_rst(@_);
904 sub output_section_rst(%) {
907 my $oldprefix = $lineprefix;
910 foreach $section (@{$args{'sectionlist'}}) {
911 print "**$section**\n\n";
912 print_lineno($section_start_lines{$section});
913 output_highlight_rst($args{'sections'}{$section});
917 $lineprefix = $oldprefix;
920 sub output_enum_rst(%) {
923 my $oldprefix = $lineprefix;
925 my $name = "enum " . $args{'enum'};
927 print "\n\n.. c:type:: " . $name . "\n\n";
928 print_lineno($declaration_start_line);
930 output_highlight_rst($args{'purpose'});
933 print "**Constants**\n\n";
935 foreach $parameter (@{$args{'parameterlist'}}) {
936 print "``$parameter``\n";
937 if ($args{'parameterdescs'}{$parameter} ne $undescribed) {
938 output_highlight_rst($args{'parameterdescs'}{$parameter});
940 print " *undescribed*\n";
945 $lineprefix = $oldprefix;
946 output_section_rst(@_);
949 sub output_typedef_rst(%) {
952 my $oldprefix = $lineprefix;
953 my $name = "typedef " . $args{'typedef'};
955 print "\n\n.. c:type:: " . $name . "\n\n";
956 print_lineno($declaration_start_line);
958 output_highlight_rst($args{'purpose'});
961 $lineprefix = $oldprefix;
962 output_section_rst(@_);
965 sub output_struct_rst(%) {
968 my $oldprefix = $lineprefix;
969 my $name = $args{'type'} . " " . $args{'struct'};
971 print "\n\n.. c:type:: " . $name . "\n\n";
972 print_lineno($declaration_start_line);
974 output_highlight_rst($args{'purpose'});
977 print "**Definition**\n\n";
979 my $declaration = $args{'definition'};
980 $declaration =~ s/\t/ /g;
981 print " " . $args{'type'} . " " . $args{'struct'} . " {\n$declaration };\n\n";
983 print "**Members**\n\n";
985 foreach $parameter (@{$args{'parameterlist'}}) {
986 ($parameter =~ /^#/) && next;
988 my $parameter_name = $parameter;
989 $parameter_name =~ s/\[.*//;
991 ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
992 $type = $args{'parametertypes'}{$parameter};
993 print_lineno($parameterdesc_start_lines{$parameter_name});
994 print "``" . $parameter . "``\n";
995 output_highlight_rst($args{'parameterdescs'}{$parameter_name});
1000 $lineprefix = $oldprefix;
1001 output_section_rst(@_);
1004 ## none mode output functions
1006 sub output_function_none(%) {
1009 sub output_enum_none(%) {
1012 sub output_typedef_none(%) {
1015 sub output_struct_none(%) {
1018 sub output_blockhead_none(%) {
1022 # generic output function for all types (function, struct/union, typedef, enum);
1023 # calls the generated, variable output_ function name based on
1024 # functype and output_mode
1025 sub output_declaration {
1028 my $functype = shift;
1029 my $func = "output_${functype}_$output_mode";
1030 if (($output_selection == OUTPUT_ALL) ||
1031 (($output_selection == OUTPUT_INCLUDE ||
1032 $output_selection == OUTPUT_EXPORTED) &&
1033 defined($function_table{$name})) ||
1034 (($output_selection == OUTPUT_EXCLUDE ||
1035 $output_selection == OUTPUT_INTERNAL) &&
1036 !($functype eq "function" && defined($function_table{$name}))))
1044 # generic output function - calls the right one based on current output mode.
1045 sub output_blockhead {
1047 my $func = "output_blockhead_" . $output_mode;
1053 # takes a declaration (struct, union, enum, typedef) and
1054 # invokes the right handler. NOT called for functions.
1055 sub dump_declaration($$) {
1057 my ($prototype, $file) = @_;
1058 my $func = "dump_" . $decl_type;
1062 sub dump_union($$) {
1066 sub dump_struct($$) {
1070 if ($x =~ /(struct|union)\s+(\w+)\s*\{(.*)\}(\s*(__packed|__aligned|____cacheline_aligned_in_smp|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*/) {
1072 $declaration_name = $2;
1075 # ignore members marked private:
1076 $members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gosi;
1077 $members =~ s/\/\*\s*private:.*//gosi;
1079 $members =~ s/\/\*.*?\*\///gos;
1081 $members =~ s/\s*__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)/ /gi;
1082 $members =~ s/\s*__aligned\s*\([^;]*\)/ /gos;
1083 $members =~ s/\s*__packed\s*/ /gos;
1084 $members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos;
1085 $members =~ s/\s*____cacheline_aligned_in_smp/ /gos;
1086 # replace DECLARE_BITMAP
1087 $members =~ s/DECLARE_BITMAP\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
1088 # replace DECLARE_HASHTABLE
1089 $members =~ s/DECLARE_HASHTABLE\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[1 << (($2) - 1)\]/gos;
1090 # replace DECLARE_KFIFO
1091 $members =~ s/DECLARE_KFIFO\s*\(([^,)]+),\s*([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos;
1092 # replace DECLARE_KFIFO_PTR
1093 $members =~ s/DECLARE_KFIFO_PTR\s*\(([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos;
1095 my $declaration = $members;
1097 # Split nested struct/union elements as newer ones
1098 while ($members =~ m/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/) {
1103 foreach my $id(split /,/, $ids) {
1104 $newmember .= "$maintype $id; ";
1107 $id =~ s/^\s*\**(\S+)\s*/$1/;
1108 foreach my $arg (split /;/, $content) {
1109 next if ($arg =~ m/^\s*$/);
1110 if ($arg =~ m/^([^\(]+\(\*?\s*)([\w\.]*)(\s*\).*)/) {
1111 # pointer-to-function
1116 if ($id =~ m/^\s*$/) {
1117 # anonymous struct/union
1118 $newmember .= "$type$name$extra; ";
1120 $newmember .= "$type$id.$name$extra; ";
1128 $arg =~ s/:\s*\d+\s*//g;
1130 $arg =~ s/\[.*\]//g;
1131 # The type may have multiple words,
1132 # and multiple IDs can be defined, like:
1133 # const struct foo, *bar, foobar
1134 # So, we remove spaces when parsing the
1135 # names, in order to match just names
1136 # and commas for the names
1137 $arg =~ s/\s*,\s*/,/g;
1138 if ($arg =~ m/(.*)\s+([\S+,]+)/) {
1142 $newmember .= "$arg; ";
1145 foreach my $name (split /,/, $names) {
1146 $name =~ s/^\s*\**(\S+)\s*/$1/;
1147 next if (($name =~ m/^\s*$/));
1148 if ($id =~ m/^\s*$/) {
1149 # anonymous struct/union
1150 $newmember .= "$type $name; ";
1152 $newmember .= "$type $id.$name; ";
1158 $members =~ s/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/$newmember/;
1161 # Ignore other nested elements, like enums
1162 $members =~ s/(\{[^\{\}]*\})//g;
1164 create_parameterlist($members, ';', $file, $declaration_name);
1165 check_sections($file, $declaration_name, $decl_type, $sectcheck, $struct_actual);
1167 # Adjust declaration for better display
1168 $declaration =~ s/([\{;])/$1\n/g;
1169 $declaration =~ s/\}\s+;/};/g;
1170 # Better handle inlined enums
1171 do {} while ($declaration =~ s/(enum\s+\{[^\}]+),([^\n])/$1,\n$2/);
1173 my @def_args = split /\n/, $declaration;
1176 foreach my $clause (@def_args) {
1177 $clause =~ s/^\s+//;
1178 $clause =~ s/\s+$//;
1179 $clause =~ s/\s+/ /;
1181 $level-- if ($clause =~ m/(\})/ && $level > 1);
1182 if (!($clause =~ m/^\s*#/)) {
1183 $declaration .= "\t" x $level;
1185 $declaration .= "\t" . $clause . "\n";
1186 $level++ if ($clause =~ m/(\{)/ && !($clause =~m/\}/));
1188 output_declaration($declaration_name,
1190 {'struct' => $declaration_name,
1191 'module' => $modulename,
1192 'definition' => $declaration,
1193 'parameterlist' => \@parameterlist,
1194 'parameterdescs' => \%parameterdescs,
1195 'parametertypes' => \%parametertypes,
1196 'sectionlist' => \@sectionlist,
1197 'sections' => \%sections,
1198 'purpose' => $declaration_purpose,
1199 'type' => $decl_type
1203 print STDERR "${file}:$.: error: Cannot parse struct or union!\n";
1209 sub show_warnings($$) {
1210 my $functype = shift;
1213 return 1 if ($output_selection == OUTPUT_ALL);
1215 if ($output_selection == OUTPUT_EXPORTED) {
1216 if (defined($function_table{$name})) {
1222 if ($output_selection == OUTPUT_INTERNAL) {
1223 if (!($functype eq "function" && defined($function_table{$name}))) {
1229 if ($output_selection == OUTPUT_INCLUDE) {
1230 if (defined($function_table{$name})) {
1236 if ($output_selection == OUTPUT_EXCLUDE) {
1237 if (!defined($function_table{$name})) {
1243 die("Please add the new output type at show_warnings()");
1250 $x =~ s@/\*.*?\*/@@gos; # strip comments.
1251 # strip #define macros inside enums
1252 $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos;
1254 if ($x =~ /enum\s+(\w*)\s*\{(.*)\}/) {
1255 $declaration_name = $1;
1259 $members =~ s/\s+$//;
1261 foreach my $arg (split ',', $members) {
1262 $arg =~ s/^\s*(\w+).*/$1/;
1263 push @parameterlist, $arg;
1264 if (!$parameterdescs{$arg}) {
1265 $parameterdescs{$arg} = $undescribed;
1266 if (show_warnings("enum", $declaration_name)) {
1267 print STDERR "${file}:$.: warning: Enum value '$arg' not described in enum '$declaration_name'\n";
1270 $_members{$arg} = 1;
1273 while (my ($k, $v) = each %parameterdescs) {
1274 if (!exists($_members{$k})) {
1275 if (show_warnings("enum", $declaration_name)) {
1276 print STDERR "${file}:$.: warning: Excess enum value '$k' description in '$declaration_name'\n";
1281 output_declaration($declaration_name,
1283 {'enum' => $declaration_name,
1284 'module' => $modulename,
1285 'parameterlist' => \@parameterlist,
1286 'parameterdescs' => \%parameterdescs,
1287 'sectionlist' => \@sectionlist,
1288 'sections' => \%sections,
1289 'purpose' => $declaration_purpose
1293 print STDERR "${file}:$.: error: Cannot parse enum!\n";
1298 sub dump_typedef($$) {
1302 $x =~ s@/\*.*?\*/@@gos; # strip comments.
1304 # Parse function prototypes
1305 if ($x =~ /typedef\s+(\w+)\s*\(\*\s*(\w\S+)\s*\)\s*\((.*)\);/ ||
1306 $x =~ /typedef\s+(\w+)\s*(\w\S+)\s*\s*\((.*)\);/) {
1310 $declaration_name = $2;
1313 create_parameterlist($args, ',', $file, $declaration_name);
1315 output_declaration($declaration_name,
1317 {'function' => $declaration_name,
1319 'module' => $modulename,
1320 'functiontype' => $return_type,
1321 'parameterlist' => \@parameterlist,
1322 'parameterdescs' => \%parameterdescs,
1323 'parametertypes' => \%parametertypes,
1324 'sectionlist' => \@sectionlist,
1325 'sections' => \%sections,
1326 'purpose' => $declaration_purpose
1331 while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
1332 $x =~ s/\(*.\)\s*;$/;/;
1333 $x =~ s/\[*.\]\s*;$/;/;
1336 if ($x =~ /typedef.*\s+(\w+)\s*;/) {
1337 $declaration_name = $1;
1339 output_declaration($declaration_name,
1341 {'typedef' => $declaration_name,
1342 'module' => $modulename,
1343 'sectionlist' => \@sectionlist,
1344 'sections' => \%sections,
1345 'purpose' => $declaration_purpose
1349 print STDERR "${file}:$.: error: Cannot parse typedef!\n";
1354 sub save_struct_actual($) {
1357 # strip all spaces from the actual param so that it looks like one string item
1358 $actual =~ s/\s*//g;
1359 $struct_actual = $struct_actual . $actual . " ";
1362 sub create_parameterlist($$$$) {
1364 my $splitter = shift;
1366 my $declaration_name = shift;
1370 # temporarily replace commas inside function pointer definition
1371 while ($args =~ /(\([^\),]+),/) {
1372 $args =~ s/(\([^\),]+),/$1#/g;
1375 foreach my $arg (split($splitter, $args)) {
1377 $arg =~ s/\/\*.*\*\///;
1378 # strip leading/trailing spaces
1384 # Treat preprocessor directive as a typeless variable just to fill
1385 # corresponding data structures "correctly". Catch it later in
1387 push_parameter($arg, "", $file);
1388 } elsif ($arg =~ m/\(.+\)\s*\(/) {
1389 # pointer-to-function
1391 $arg =~ m/[^\(]+\(\*?\s*([\w\.]*)\s*\)/;
1394 $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
1395 save_struct_actual($param);
1396 push_parameter($param, $type, $file, $declaration_name);
1398 $arg =~ s/\s*:\s*/:/g;
1399 $arg =~ s/\s*\[/\[/g;
1401 my @args = split('\s*,\s*', $arg);
1402 if ($args[0] =~ m/\*/) {
1403 $args[0] =~ s/(\*+)\s*/ $1/;
1407 if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
1409 push(@first_arg, split('\s+', $1));
1410 push(@first_arg, $2);
1412 @first_arg = split('\s+', shift @args);
1415 unshift(@args, pop @first_arg);
1416 $type = join " ", @first_arg;
1418 foreach $param (@args) {
1419 if ($param =~ m/^(\*+)\s*(.*)/) {
1420 save_struct_actual($2);
1421 push_parameter($2, "$type $1", $file, $declaration_name);
1423 elsif ($param =~ m/(.*?):(\d+)/) {
1424 if ($type ne "") { # skip unnamed bit-fields
1425 save_struct_actual($1);
1426 push_parameter($1, "$type:$2", $file, $declaration_name)
1430 save_struct_actual($param);
1431 push_parameter($param, $type, $file, $declaration_name);
1438 sub push_parameter($$$$) {
1442 my $declaration_name = shift;
1444 if (($anon_struct_union == 1) && ($type eq "") &&
1446 return; # ignore the ending }; from anon. struct/union
1449 $anon_struct_union = 0;
1450 $param =~ s/[\[\)].*//;
1452 if ($type eq "" && $param =~ /\.\.\.$/)
1454 if (!$param =~ /\w\.\.\.$/) {
1455 # handles unnamed variable parameters
1458 elsif ($param =~ /\w\.\.\.$/) {
1459 # for named variable parameters of the form `x...`, remove the dots
1460 $param =~ s/\.\.\.$//;
1462 if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
1463 $parameterdescs{$param} = "variable arguments";
1466 elsif ($type eq "" && ($param eq "" or $param eq "void"))
1469 $parameterdescs{void} = "no arguments";
1471 elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
1472 # handle unnamed (anonymous) union or struct:
1475 $param = "{unnamed_" . $param . "}";
1476 $parameterdescs{$param} = "anonymous\n";
1477 $anon_struct_union = 1;
1480 # warn if parameter has no description
1481 # (but ignore ones starting with # as these are not parameters
1482 # but inline preprocessor statements);
1483 # Note: It will also ignore void params and unnamed structs/unions
1484 if (!defined $parameterdescs{$param} && $param !~ /^#/) {
1485 $parameterdescs{$param} = $undescribed;
1487 if (show_warnings($type, $declaration_name) && $param !~ /\./) {
1489 "${file}:$.: warning: Function parameter or member '$param' not described in '$declaration_name'\n";
1494 # strip spaces from $param so that it is one continuous string
1495 # on @parameterlist;
1496 # this fixes a problem where check_sections() cannot find
1497 # a parameter like "addr[6 + 2]" because it actually appears
1498 # as "addr[6", "+", "2]" on the parameter list;
1499 # but it's better to maintain the param string unchanged for output,
1500 # so just weaken the string compare in check_sections() to ignore
1501 # "[blah" in a parameter string;
1502 ###$param =~ s/\s*//g;
1503 push @parameterlist, $param;
1504 $type =~ s/\s\s+/ /g;
1505 $parametertypes{$param} = $type;
1508 sub check_sections($$$$$) {
1509 my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck) = @_;
1510 my @sects = split ' ', $sectcheck;
1511 my @prms = split ' ', $prmscheck;
1514 my $prm_clean; # strip trailing "[array size]" and/or beginning "*"
1516 foreach $sx (0 .. $#sects) {
1518 foreach $px (0 .. $#prms) {
1519 $prm_clean = $prms[$px];
1520 $prm_clean =~ s/\[.*\]//;
1521 $prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
1522 # ignore array size in a parameter string;
1523 # however, the original param string may contain
1524 # spaces, e.g.: addr[6 + 2]
1525 # and this appears in @prms as "addr[6" since the
1526 # parameter list is split at spaces;
1527 # hence just ignore "[..." for the sections check;
1528 $prm_clean =~ s/\[.*//;
1530 ##$prm_clean =~ s/^\**//;
1531 if ($prm_clean eq $sects[$sx]) {
1537 if ($decl_type eq "function") {
1538 print STDERR "${file}:$.: warning: " .
1539 "Excess function parameter " .
1541 "description in '$decl_name'\n";
1549 # Checks the section describing the return value of a function.
1550 sub check_return_section {
1552 my $declaration_name = shift;
1553 my $return_type = shift;
1555 # Ignore an empty return type (It's a macro)
1556 # Ignore functions with a "void" return type. (But don't ignore "void *")
1557 if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) {
1561 if (!defined($sections{$section_return}) ||
1562 $sections{$section_return} eq "") {
1563 print STDERR "${file}:$.: warning: " .
1564 "No description found for return value of " .
1565 "'$declaration_name'\n";
1571 # takes a function prototype and the name of the current file being
1572 # processed and spits out all the details stored in the global
1574 sub dump_function($$) {
1575 my $prototype = shift;
1579 $prototype =~ s/^static +//;
1580 $prototype =~ s/^extern +//;
1581 $prototype =~ s/^asmlinkage +//;
1582 $prototype =~ s/^inline +//;
1583 $prototype =~ s/^__inline__ +//;
1584 $prototype =~ s/^__inline +//;
1585 $prototype =~ s/^__always_inline +//;
1586 $prototype =~ s/^noinline +//;
1587 $prototype =~ s/__init +//;
1588 $prototype =~ s/__init_or_module +//;
1589 $prototype =~ s/__meminit +//;
1590 $prototype =~ s/__must_check +//;
1591 $prototype =~ s/__weak +//;
1592 $prototype =~ s/__sched +//;
1593 $prototype =~ s/__printf\s*\(\s*\d*\s*,\s*\d*\s*\) +//;
1594 my $define = $prototype =~ s/^#\s*define\s+//; #ak added
1595 $prototype =~ s/__attribute__\s*\(\(
1597 [\w\s]++ # attribute name
1598 (?:\([^)]*+\))? # attribute arguments
1599 \s*+,? # optional comma at the end
1603 # Yes, this truly is vile. We are looking for:
1604 # 1. Return type (may be nothing if we're looking at a macro)
1606 # 3. Function parameters.
1608 # All the while we have to watch out for function pointer parameters
1609 # (which IIRC is what the two sections are for), C types (these
1610 # regexps don't even start to express all the possibilities), and
1613 # If you mess with these regexps, it's a good idea to check that
1614 # the following functions' documentation still comes out right:
1615 # - parport_register_device (function pointer parameters)
1616 # - atomic_set (macro)
1617 # - pci_match_device, __copy_to_user (long return type)
1619 if ($define && $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s+/) {
1620 # This is an object-like macro, it has no return type and no parameter
1622 # Function-like macros are not allowed to have spaces between
1623 # declaration_name and opening parenthesis (notice the \s+).
1625 $declaration_name = $2;
1627 } elsif ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1628 $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1629 $prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1630 $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1631 $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1632 $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1633 $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1634 $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1635 $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1636 $prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1637 $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1638 $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1639 $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1640 $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1641 $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1642 $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1643 $prototype =~ m/^(\w+\s+\w+\s*\*+\s*\w+\s*\*+\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/) {
1645 $declaration_name = $2;
1648 create_parameterlist($args, ',', $file, $declaration_name);
1650 print STDERR "${file}:$.: warning: cannot understand function prototype: '$prototype'\n";
1654 my $prms = join " ", @parameterlist;
1655 check_sections($file, $declaration_name, "function", $sectcheck, $prms);
1657 # This check emits a lot of warnings at the moment, because many
1658 # functions don't have a 'Return' doc section. So until the number
1659 # of warnings goes sufficiently down, the check is only performed in
1661 # TODO: always perform the check.
1662 if ($verbose && !$noret) {
1663 check_return_section($file, $declaration_name, $return_type);
1666 output_declaration($declaration_name,
1668 {'function' => $declaration_name,
1669 'module' => $modulename,
1670 'functiontype' => $return_type,
1671 'parameterlist' => \@parameterlist,
1672 'parameterdescs' => \%parameterdescs,
1673 'parametertypes' => \%parametertypes,
1674 'sectionlist' => \@sectionlist,
1675 'sections' => \%sections,
1676 'purpose' => $declaration_purpose
1682 %parameterdescs = ();
1683 %parametertypes = ();
1684 @parameterlist = ();
1688 $struct_actual = "";
1691 $state = STATE_NORMAL;
1692 $inline_doc_state = STATE_INLINE_NA;
1695 sub tracepoint_munge($) {
1697 my $tracepointname = 0;
1698 my $tracepointargs = 0;
1700 if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
1701 $tracepointname = $1;
1703 if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
1704 $tracepointname = $1;
1706 if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
1707 $tracepointname = $2;
1709 $tracepointname =~ s/^\s+//; #strip leading whitespace
1710 if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
1711 $tracepointargs = $1;
1713 if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
1714 print STDERR "${file}:$.: warning: Unrecognized tracepoint format: \n".
1717 $prototype = "static inline void trace_$tracepointname($tracepointargs)";
1721 sub syscall_munge() {
1724 $prototype =~ s@[\r\n]+@ @gos; # strip newlines/CR's
1725 ## if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
1726 if ($prototype =~ m/SYSCALL_DEFINE0/) {
1728 ## $prototype = "long sys_$1(void)";
1731 $prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
1732 if ($prototype =~ m/long (sys_.*?),/) {
1733 $prototype =~ s/,/\(/;
1735 $prototype =~ s/\)/\(void\)/;
1738 # now delete all of the odd-number commas in $prototype
1739 # so that arg types & arg names don't have a comma between them
1741 my $len = length($prototype);
1743 $len = 0; # skip the for-loop
1745 for (my $ix = 0; $ix < $len; $ix++) {
1746 if (substr($prototype, $ix, 1) eq ',') {
1748 if ($count % 2 == 1) {
1749 substr($prototype, $ix, 1) = ' ';
1755 sub process_proto_function($$) {
1759 $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1761 if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
1764 elsif ($x =~ /([^\{]*)/) {
1768 if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
1769 $prototype =~ s@/\*.*?\*/@@gos; # strip comments.
1770 $prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1771 $prototype =~ s@^\s+@@gos; # strip leading spaces
1772 if ($prototype =~ /SYSCALL_DEFINE/) {
1775 if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
1776 $prototype =~ /DEFINE_SINGLE_EVENT/)
1778 tracepoint_munge($file);
1780 dump_function($prototype, $file);
1785 sub process_proto_type($$) {
1789 $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1790 $x =~ s@^\s+@@gos; # strip leading spaces
1791 $x =~ s@\s+$@@gos; # strip trailing spaces
1792 $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1795 # To distinguish preprocessor directive from regular declaration later.
1800 if ( $x =~ /([^\{\};]*)([\{\};])(.*)/ ) {
1801 if( length $prototype ) {
1804 $prototype .= $1 . $2;
1805 ($2 eq '{') && $brcount++;
1806 ($2 eq '}') && $brcount--;
1807 if (($2 eq ';') && ($brcount == 0)) {
1808 dump_declaration($prototype, $file);
1821 sub map_filename($) {
1823 my ($orig_file) = @_;
1825 if (defined($ENV{'SRCTREE'})) {
1826 $file = "$ENV{'SRCTREE'}" . "/" . $orig_file;
1831 if (defined($source_map{$file})) {
1832 $file = $source_map{$file};
1838 sub process_export_file($) {
1839 my ($orig_file) = @_;
1840 my $file = map_filename($orig_file);
1842 if (!open(IN,"<$file")) {
1843 print STDERR "Error: Cannot open file $file\n";
1849 if (/$export_symbol/) {
1850 $function_table{$2} = 1;
1858 # Parsers for the various processing states.
1860 # STATE_NORMAL: looking for the /** to begin everything.
1862 sub process_normal() {
1863 if (/$doc_start/o) {
1864 $state = STATE_NAME; # next line is always the function name
1866 $declaration_start_line = $. + 1;
1871 # STATE_NAME: Looking for the "name - description" line
1873 sub process_name($$) {
1878 if (/$doc_block/o) {
1879 $state = STATE_DOCBLOCK;
1881 $new_start_line = $. + 1;
1884 $section = $section_intro;
1889 elsif (/$doc_decl/o) {
1891 if (/\s*([\w\s]+?)(\(\))?\s*-/) {
1895 $state = STATE_BODY;
1896 # if there's no @param blocks need to set up default section
1899 $section = $section_default;
1900 $new_start_line = $. + 1;
1902 # strip leading/trailing/multiple spaces
1906 $descr =~ s/\s+/ /g;
1907 $declaration_purpose = $descr;
1908 $state = STATE_BODY_MAYBE;
1910 $declaration_purpose = "";
1913 if (($declaration_purpose eq "") && $verbose) {
1914 print STDERR "${file}:$.: warning: missing initial short description on line:\n";
1919 if ($identifier =~ m/^struct\b/) {
1920 $decl_type = 'struct';
1921 } elsif ($identifier =~ m/^union\b/) {
1922 $decl_type = 'union';
1923 } elsif ($identifier =~ m/^enum\b/) {
1924 $decl_type = 'enum';
1925 } elsif ($identifier =~ m/^typedef\b/) {
1926 $decl_type = 'typedef';
1928 $decl_type = 'function';
1932 print STDERR "${file}:$.: info: Scanning doc for $identifier\n";
1935 print STDERR "${file}:$.: warning: Cannot understand $_ on line $.",
1936 " - I thought it was a doc line\n";
1938 $state = STATE_NORMAL;
1944 # STATE_BODY and STATE_BODY_MAYBE: the bulk of a kerneldoc comment.
1946 sub process_body($$) {
1949 # Until all named variable macro parameters are
1950 # documented using the bare name (`x`) rather than with
1951 # dots (`x...`), strip the dots:
1952 if ($section =~ /\w\.\.\.$/) {
1953 $section =~ s/\.\.\.$//;
1956 print STDERR "${file}:$.: warning: Variable macro arguments should be documented without dots\n";
1961 if ($state == STATE_BODY_WITH_BLANK_LINE && /^\s*\*\s?\S/) {
1962 dump_section($file, $section, $contents);
1963 $section = $section_default;
1967 if (/$doc_sect/i) { # case insensitive for supported section names
1971 # map the supported section names to the canonical names
1972 if ($newsection =~ m/^description$/i) {
1973 $newsection = $section_default;
1974 } elsif ($newsection =~ m/^context$/i) {
1975 $newsection = $section_context;
1976 } elsif ($newsection =~ m/^returns?$/i) {
1977 $newsection = $section_return;
1978 } elsif ($newsection =~ m/^\@return$/) {
1979 # special: @return is a section, not a param description
1980 $newsection = $section_return;
1983 if (($contents ne "") && ($contents ne "\n")) {
1984 if (!$in_doc_sect && $verbose) {
1985 print STDERR "${file}:$.: warning: contents before sections\n";
1988 dump_section($file, $section, $contents);
1989 $section = $section_default;
1993 $state = STATE_BODY;
1994 $contents = $newcontents;
1995 $new_start_line = $.;
1996 while (substr($contents, 0, 1) eq " ") {
1997 $contents = substr($contents, 1);
1999 if ($contents ne "") {
2002 $section = $newsection;
2003 $leading_space = undef;
2004 } elsif (/$doc_end/) {
2005 if (($contents ne "") && ($contents ne "\n")) {
2006 dump_section($file, $section, $contents);
2007 $section = $section_default;
2010 # look for doc_com + <text> + doc_end:
2011 if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
2012 print STDERR "${file}:$.: warning: suspicious ending line: $_";
2017 $state = STATE_PROTO;
2019 } elsif (/$doc_content/) {
2021 if ($section eq $section_context) {
2022 dump_section($file, $section, $contents);
2023 $section = $section_default;
2025 $new_start_line = $.;
2026 $state = STATE_BODY;
2028 if ($section ne $section_default) {
2029 $state = STATE_BODY_WITH_BLANK_LINE;
2031 $state = STATE_BODY;
2035 } elsif ($state == STATE_BODY_MAYBE) {
2036 # Continued declaration purpose
2037 chomp($declaration_purpose);
2038 $declaration_purpose .= " " . $1;
2039 $declaration_purpose =~ s/\s+/ /g;
2042 if ($section =~ m/^@/ || $section eq $section_context) {
2043 if (!defined $leading_space) {
2044 if ($cont =~ m/^(\s+)/) {
2045 $leading_space = $1;
2047 $leading_space = "";
2050 $cont =~ s/^$leading_space//;
2052 $contents .= $cont . "\n";
2055 # i dont know - bad line? ignore.
2056 print STDERR "${file}:$.: warning: bad line: $_";
2063 # STATE_PROTO: reading a function/whatever prototype.
2065 sub process_proto($$) {
2068 if (/$doc_inline_oneline/) {
2071 if ($contents ne "") {
2073 dump_section($file, $section, $contents);
2074 $section = $section_default;
2077 } elsif (/$doc_inline_start/) {
2078 $state = STATE_INLINE;
2079 $inline_doc_state = STATE_INLINE_NAME;
2080 } elsif ($decl_type eq 'function') {
2081 process_proto_function($_, $file);
2083 process_proto_type($_, $file);
2088 # STATE_DOCBLOCK: within a DOC: block.
2090 sub process_docblock($$) {
2094 dump_doc_section($file, $section, $contents);
2095 $section = $section_default;
2098 %parameterdescs = ();
2099 %parametertypes = ();
2100 @parameterlist = ();
2104 $state = STATE_NORMAL;
2105 } elsif (/$doc_content/) {
2107 $contents .= $blankline;
2109 $contents .= $1 . "\n";
2115 # STATE_INLINE: docbook comments within a prototype.
2117 sub process_inline($$) {
2120 # First line (state 1) needs to be a @parameter
2121 if ($inline_doc_state == STATE_INLINE_NAME && /$doc_inline_sect/o) {
2124 $new_start_line = $.;
2125 if ($contents ne "") {
2126 while (substr($contents, 0, 1) eq " ") {
2127 $contents = substr($contents, 1);
2131 $inline_doc_state = STATE_INLINE_TEXT;
2132 # Documentation block end */
2133 } elsif (/$doc_inline_end/) {
2134 if (($contents ne "") && ($contents ne "\n")) {
2135 dump_section($file, $section, $contents);
2136 $section = $section_default;
2139 $state = STATE_PROTO;
2140 $inline_doc_state = STATE_INLINE_NA;
2142 } elsif (/$doc_content/) {
2143 if ($inline_doc_state == STATE_INLINE_TEXT) {
2144 $contents .= $1 . "\n";
2145 # nuke leading blank lines
2146 if ($contents =~ /^\s*$/) {
2149 } elsif ($inline_doc_state == STATE_INLINE_NAME) {
2150 $inline_doc_state = STATE_INLINE_ERROR;
2151 print STDERR "${file}:$.: warning: ";
2152 print STDERR "Incorrect use of kernel-doc format: $_";
2159 sub process_file($) {
2161 my $initial_section_counter = $section_counter;
2162 my ($orig_file) = @_;
2164 $file = map_filename($orig_file);
2166 if (!open(IN,"<$file")) {
2167 print STDERR "Error: Cannot open file $file\n";
2174 $section_counter = 0;
2176 while (s/\\\s*$//) {
2179 # Replace tabs by spaces
2180 while ($_ =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {};
2181 # Hand this line to the appropriate state handler
2182 if ($state == STATE_NORMAL) {
2184 } elsif ($state == STATE_NAME) {
2185 process_name($file, $_);
2186 } elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE ||
2187 $state == STATE_BODY_WITH_BLANK_LINE) {
2188 process_body($file, $_);
2189 } elsif ($state == STATE_INLINE) { # scanning for inline parameters
2190 process_inline($file, $_);
2191 } elsif ($state == STATE_PROTO) {
2192 process_proto($file, $_);
2193 } elsif ($state == STATE_DOCBLOCK) {
2194 process_docblock($file, $_);
2198 # Make sure we got something interesting.
2199 if ($initial_section_counter == $section_counter && $
2200 output_mode ne "none") {
2201 if ($output_selection == OUTPUT_INCLUDE) {
2202 print STDERR "${file}:1: warning: '$_' not found\n"
2203 for keys %function_table;
2206 print STDERR "${file}:1: warning: no structured comments found\n";
2212 $kernelversion = get_kernel_version();
2214 # generate a sequence of code that will splice in highlighting information
2215 # using the s// operator.
2216 for (my $k = 0; $k < @highlights; $k++) {
2217 my $pattern = $highlights[$k][0];
2218 my $result = $highlights[$k][1];
2219 # print STDERR "scanning pattern:$pattern, highlight:($result)\n";
2220 $dohighlight .= "\$contents =~ s:$pattern:$result:gs;\n";
2223 # Read the file that maps relative names to absolute names for
2224 # separate source and object directories and for shadow trees.
2225 if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
2226 my ($relname, $absname);
2227 while(<SOURCE_MAP>) {
2229 ($relname, $absname) = (split())[0..1];
2230 $relname =~ s:^/+::;
2231 $source_map{$relname} = $absname;
2236 if ($output_selection == OUTPUT_EXPORTED ||
2237 $output_selection == OUTPUT_INTERNAL) {
2239 push(@export_file_list, @ARGV);
2241 foreach (@export_file_list) {
2243 process_export_file($_);
2251 if ($verbose && $errors) {
2252 print STDERR "$errors errors\n";
2254 if ($verbose && $warnings) {
2255 print STDERR "$warnings warnings\n";
2258 exit($output_mode eq "none" ? 0 : $errors);