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 format selection modifier (affects only ReST output):
61 -sphinx-version Use the ReST C domain dialect compatible with an
62 specific Sphinx Version.
63 If not specified, kernel-doc will auto-detect using
64 the sphinx-build version found on PATH.
66 Output selection (mutually exclusive):
67 -export Only output documentation for symbols that have been
68 exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL()
69 in any input FILE or -export-file FILE.
70 -internal Only output documentation for symbols that have NOT been
71 exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL()
72 in any input FILE or -export-file FILE.
73 -function NAME Only output documentation for the given function(s)
74 or DOC: section title(s). All other functions and DOC:
75 sections are ignored. May be specified multiple times.
76 -nosymbol NAME Exclude the specified symbols from the output
77 documentation. May be specified multiple times.
79 Output selection modifiers:
80 -no-doc-sections Do not output DOC: sections.
81 -enable-lineno Enable output of #define LINENO lines. Only works with
82 reStructuredText format.
83 -export-file FILE Specify an additional FILE in which to look for
84 EXPORT_SYMBOL() and EXPORT_SYMBOL_GPL(). To be used with
85 -export or -internal. May be specified multiple times.
88 -v Verbose output, more warnings and other information.
90 -Werror Treat warnings as errors.
99 # In the following table, (...)? signifies optional structure.
100 # (...)* signifies 0 or more structure elements
102 # * function_name(:)? (- short description)?
103 # (* @parameterx: (description of parameter x)?)*
105 # * (Description:)? (Description of function)?
106 # * (section header: (section description)? )*
109 # So .. the trivial example would be:
115 # If the Description: header tag is omitted, then there must be a blank line
116 # after the last parameter specification.
119 # * my_function - does my stuff
120 # * @my_arg: its mine damnit
122 # * Does my stuff explained.
125 # or, could also use:
127 # * my_function - does my stuff
128 # * @my_arg: its mine damnit
129 # * Description: Does my stuff explained.
133 # Besides functions you can also write documentation for structs, unions,
134 # enums and typedefs. Instead of the function name you must write the name
135 # of the declaration; the struct/union/enum/typedef must always precede
136 # the name. Nesting of declarations is not supported.
137 # Use the argument mechanism to document members or constants.
140 # * struct my_struct - short description
142 # * @b: second member
144 # * Longer description
153 # All descriptions can be multiline, except the short function description.
155 # For really longs structs, you can also describe arguments inside the
156 # body of the struct.
159 # * struct my_struct - short description
161 # * @b: second member
163 # * Longer description
169 # * @c: This is longer description of C
171 # * You can use paragraphs to describe arguments
172 # * using this method.
177 # This should be use only for struct/enum members.
179 # You can also add additional sections. When documenting kernel functions you
180 # should document the "Context:" of the function, e.g. whether the functions
181 # can be called form interrupts. Unlike other sections you can end it with an
183 # A non-void function should have a "Return:" section describing the return
185 # Example-sections should contain the string EXAMPLE so that they are marked
186 # appropriately in DocBook.
190 # * user_function - function that can only be called in user context
191 # * @a: some argument
192 # * Context: !in_interrupt()
196 # * user_function(22);
201 # All descriptive text is further processed, scanning for the following special
202 # patterns, which are highlighted appropriately.
204 # 'funcname()' - function
205 # '$ENVVAR' - environmental variable
206 # '&struct_name' - name of a structure (up to two words including 'struct')
207 # '&struct_name.member' - name of a structure member
208 # '@parameter' - name of a parameter
209 # '%CONST' - name of a constant.
210 # '``LITERAL``' - literal string without any spaces on it.
216 my $anon_struct_union = 0;
218 # match expressions used to find embedded type information
219 my $type_constant = '\b``([^\`]+)``\b';
220 my $type_constant2 = '\%([-_\w]+)';
221 my $type_func = '(\w+)\(\)';
222 my $type_param = '\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
223 my $type_param_ref = '([\!]?)\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
224 my $type_fp_param = '\@(\w+)\(\)'; # Special RST handling for func ptr params
225 my $type_fp_param2 = '\@(\w+->\S+)\(\)'; # Special RST handling for structs with func ptr params
226 my $type_env = '(\$\w+)';
227 my $type_enum = '\&(enum\s*([_\w]+))';
228 my $type_struct = '\&(struct\s*([_\w]+))';
229 my $type_typedef = '\&(typedef\s*([_\w]+))';
230 my $type_union = '\&(union\s*([_\w]+))';
231 my $type_member = '\&([_\w]+)(\.|->)([_\w]+)';
232 my $type_fallback = '\&([_\w]+)';
233 my $type_member_func = $type_member . '\(\)';
235 # Output conversion substitutions.
236 # One for each output format
238 # these are pretty rough
239 my @highlights_man = (
240 [$type_constant, "\$1"],
241 [$type_constant2, "\$1"],
242 [$type_func, "\\\\fB\$1\\\\fP"],
243 [$type_enum, "\\\\fI\$1\\\\fP"],
244 [$type_struct, "\\\\fI\$1\\\\fP"],
245 [$type_typedef, "\\\\fI\$1\\\\fP"],
246 [$type_union, "\\\\fI\$1\\\\fP"],
247 [$type_param, "\\\\fI\$1\\\\fP"],
248 [$type_param_ref, "\\\\fI\$1\$2\\\\fP"],
249 [$type_member, "\\\\fI\$1\$2\$3\\\\fP"],
250 [$type_fallback, "\\\\fI\$1\\\\fP"]
252 my $blankline_man = "";
255 my @highlights_rst = (
256 [$type_constant, "``\$1``"],
257 [$type_constant2, "``\$1``"],
258 # Note: need to escape () to avoid func matching later
259 [$type_member_func, "\\:c\\:type\\:`\$1\$2\$3\\\\(\\\\) <\$1>`"],
260 [$type_member, "\\:c\\:type\\:`\$1\$2\$3 <\$1>`"],
261 [$type_fp_param, "**\$1\\\\(\\\\)**"],
262 [$type_fp_param2, "**\$1\\\\(\\\\)**"],
263 [$type_func, "\$1()"],
264 [$type_enum, "\\:c\\:type\\:`\$1 <\$2>`"],
265 [$type_struct, "\\:c\\:type\\:`\$1 <\$2>`"],
266 [$type_typedef, "\\:c\\:type\\:`\$1 <\$2>`"],
267 [$type_union, "\\:c\\:type\\:`\$1 <\$2>`"],
268 # in rst this can refer to any type
269 [$type_fallback, "\\:c\\:type\\:`\$1`"],
270 [$type_param_ref, "**\$1\$2**"]
272 my $blankline_rst = "\n";
280 my ($sphinx_major, $sphinx_minor, $sphinx_patch);
282 my $dohighlight = "";
286 my $output_mode = "rst";
287 my $output_preformatted = 0;
288 my $no_doc_sections = 0;
289 my $enable_lineno = 0;
290 my @highlights = @highlights_rst;
291 my $blankline = $blankline_rst;
292 my $modulename = "Kernel API";
295 OUTPUT_ALL => 0, # output all symbols and doc sections
296 OUTPUT_INCLUDE => 1, # output only specified symbols
297 OUTPUT_EXPORTED => 2, # output exported symbols
298 OUTPUT_INTERNAL => 3, # output non-exported symbols
300 my $output_selection = OUTPUT_ALL;
301 my $show_not_found = 0; # No longer used
303 my @export_file_list;
306 if (defined($ENV{'KBUILD_BUILD_TIMESTAMP'}) &&
307 (my $seconds = `date -d"${ENV{'KBUILD_BUILD_TIMESTAMP'}}" +%s`) ne '') {
308 @build_time = gmtime($seconds);
310 @build_time = localtime;
313 my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
314 'July', 'August', 'September', 'October',
315 'November', 'December')[$build_time[4]] .
316 " " . ($build_time[5]+1900);
318 # Essentially these are globals.
319 # They probably want to be tidied up, made more localised or something.
320 # CAVEAT EMPTOR! Some of the others I localised may not want to be, which
321 # could cause "use of undefined value" or other bugs.
322 my ($function, %function_table, %parametertypes, $declaration_purpose);
323 my %nosymbol_table = ();
324 my $declaration_start_line;
325 my ($type, $declaration_name, $return_type);
326 my ($newsection, $newcontents, $prototype, $brcount, %source_map);
328 if (defined($ENV{'KBUILD_VERBOSE'})) {
329 $verbose = "$ENV{'KBUILD_VERBOSE'}";
332 if (defined($ENV{'KDOC_WERROR'})) {
333 $Werror = "$ENV{'KDOC_WERROR'}";
336 if (defined($ENV{'KCFLAGS'})) {
337 my $kcflags = "$ENV{'KCFLAGS'}";
339 if ($kcflags =~ /Werror/) {
344 # Generated docbook code is inserted in a template at a point where
345 # docbook v3.1 requires a non-zero sequence of RefEntry's; see:
346 # https://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
347 # We keep track of number of generated entries and generate a dummy
348 # if needs be to ensure the expanded template can be postprocessed
350 my $section_counter = 0;
356 STATE_NORMAL => 0, # normal code
357 STATE_NAME => 1, # looking for function name
358 STATE_BODY_MAYBE => 2, # body - or maybe more description
359 STATE_BODY => 3, # the body of the comment
360 STATE_BODY_WITH_BLANK_LINE => 4, # the body, which has a blank line
361 STATE_PROTO => 5, # scanning prototype
362 STATE_DOCBLOCK => 6, # documentation block
363 STATE_INLINE => 7, # gathering doc outside main block
369 # Inline documentation state
371 STATE_INLINE_NA => 0, # not applicable ($state != STATE_INLINE)
372 STATE_INLINE_NAME => 1, # looking for member name (@foo:)
373 STATE_INLINE_TEXT => 2, # looking for member documentation
374 STATE_INLINE_END => 3, # done
375 STATE_INLINE_ERROR => 4, # error - Comment without header was found.
376 # Spit a warning as it's not
377 # proper kernel-doc and ignore the rest.
379 my $inline_doc_state;
381 #declaration types: can be
382 # 'function', 'struct', 'union', 'enum', 'typedef'
385 my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
387 my $doc_com = '\s*\*\s*';
388 my $doc_com_body = '\s*\* ?';
389 my $doc_decl = $doc_com . '(\w+)';
390 # @params and a strictly limited set of supported section names
391 my $doc_sect = $doc_com .
392 '\s*(\@[.\w]+|\@\.\.\.|description|context|returns?|notes?|examples?)\s*:(.*)';
393 my $doc_content = $doc_com_body . '(.*)';
394 my $doc_block = $doc_com . 'DOC:\s*(.*)?';
395 my $doc_inline_start = '^\s*/\*\*\s*$';
396 my $doc_inline_sect = '\s*\*\s*(@\s*[\w][\w\.]*\s*):(.*)';
397 my $doc_inline_end = '^\s*\*/\s*$';
398 my $doc_inline_oneline = '^\s*/\*\*\s*(@[\w\s]+):\s*(.*)\s*\*/\s*$';
399 my $export_symbol = '^\s*EXPORT_SYMBOL(_GPL)?\s*\(\s*(\w+)\s*\)\s*;';
402 my %parameterdesc_start_lines;
406 my %section_start_lines;
411 my $new_start_line = 0;
413 # the canonical section names. see also $doc_sect above.
414 my $section_default = "Description"; # default section
415 my $section_intro = "Introduction";
416 my $section = $section_default;
417 my $section_context = "Context";
418 my $section_return = "Return";
420 my $undescribed = "-- undescribed --";
424 while ($ARGV[0] =~ m/^--?(.*)/) {
428 $output_mode = "man";
429 @highlights = @highlights_man;
430 $blankline = $blankline_man;
431 } elsif ($cmd eq "rst") {
432 $output_mode = "rst";
433 @highlights = @highlights_rst;
434 $blankline = $blankline_rst;
435 } elsif ($cmd eq "none") {
436 $output_mode = "none";
437 } elsif ($cmd eq "module") { # not needed for XML, inherits from calling document
438 $modulename = shift @ARGV;
439 } elsif ($cmd eq "function") { # to only output specific functions
440 $output_selection = OUTPUT_INCLUDE;
441 $function = shift @ARGV;
442 $function_table{$function} = 1;
443 } elsif ($cmd eq "nosymbol") { # Exclude specific symbols
444 my $symbol = shift @ARGV;
445 $nosymbol_table{$symbol} = 1;
446 } elsif ($cmd eq "export") { # only exported symbols
447 $output_selection = OUTPUT_EXPORTED;
448 %function_table = ();
449 } elsif ($cmd eq "internal") { # only non-exported symbols
450 $output_selection = OUTPUT_INTERNAL;
451 %function_table = ();
452 } elsif ($cmd eq "export-file") {
453 my $file = shift @ARGV;
454 push(@export_file_list, $file);
455 } elsif ($cmd eq "v") {
457 } elsif ($cmd eq "Werror") {
459 } elsif (($cmd eq "h") || ($cmd eq "help")) {
461 } elsif ($cmd eq 'no-doc-sections') {
462 $no_doc_sections = 1;
463 } elsif ($cmd eq 'enable-lineno') {
465 } elsif ($cmd eq 'show-not-found') {
466 $show_not_found = 1; # A no-op but don't fail
467 } elsif ($cmd eq "sphinx-version") {
468 my $ver_string = shift @ARGV;
469 if ($ver_string =~ m/^(\d+)(\.\d+)?(\.\d+)?/) {
472 $sphinx_minor = substr($2,1);
477 $sphinx_patch = substr($3,1)
482 die "Sphinx version should either major.minor or major.minor.patch format\n";
490 # continue execution near EOF;
492 # The C domain dialect changed on Sphinx 3. So, we need to check the
493 # version in order to produce the right tags.
496 foreach(split(/:/, $ENV{PATH})) {
497 return "$_/$_[0]" if(-x "$_/$_[0]");
501 sub get_sphinx_version()
505 my $cmd = "sphinx-build";
506 if (!findprog($cmd)) {
507 my $cmd = "sphinx-build3";
508 if (!findprog($cmd)) {
512 printf STDERR "Warning: Sphinx version not found. Using default (Sphinx version %d.%d.%d)\n",
513 $sphinx_major, $sphinx_minor, $sphinx_patch;
518 open IN, "$cmd --version 2>&1 |";
520 if (m/^\s*sphinx-build\s+([\d]+)\.([\d\.]+)(\+\/[\da-f]+)?$/) {
526 # Sphinx 1.2.x uses a different format
527 if (m/^\s*Sphinx.*\s+([\d]+)\.([\d\.]+)$/) {
537 # get kernel version from env
538 sub get_kernel_version() {
539 my $version = 'unknown kernel version';
541 if (defined($ENV{'KERNELVERSION'})) {
542 $version = $ENV{'KERNELVERSION'};
550 if ($enable_lineno && defined($lineno)) {
551 print "#define LINENO " . $lineno . "\n";
555 # dumps section contents to arrays/hashes intended for that purpose.
560 my $contents = join "\n", @_;
562 if ($name =~ m/$type_param/) {
564 $parameterdescs{$name} = $contents;
565 $sectcheck = $sectcheck . $name . " ";
566 $parameterdesc_start_lines{$name} = $new_start_line;
568 } elsif ($name eq "@\.\.\.") {
570 $parameterdescs{$name} = $contents;
571 $sectcheck = $sectcheck . $name . " ";
572 $parameterdesc_start_lines{$name} = $new_start_line;
575 if (defined($sections{$name}) && ($sections{$name} ne "")) {
576 # Only warn on user specified duplicate section names.
577 if ($name ne $section_default) {
578 print STDERR "${file}:$.: warning: duplicate section name '$name'\n";
581 $sections{$name} .= $contents;
583 $sections{$name} = $contents;
584 push @sectionlist, $name;
585 $section_start_lines{$name} = $new_start_line;
592 # dump DOC: section after checking that it should go out
594 sub dump_doc_section {
597 my $contents = join "\n", @_;
599 if ($no_doc_sections) {
603 return if (defined($nosymbol_table{$name}));
605 if (($output_selection == OUTPUT_ALL) ||
606 (($output_selection == OUTPUT_INCLUDE) &&
607 defined($function_table{$name})))
609 dump_section($file, $name, $contents);
610 output_blockhead({'sectionlist' => \@sectionlist,
611 'sections' => \%sections,
612 'module' => $modulename,
613 'content-only' => ($output_selection != OUTPUT_ALL), });
620 # parameterdescs, a hash.
621 # function => "function name"
622 # parameterlist => @list of parameters
623 # parameterdescs => %parameter descriptions
624 # sectionlist => @list of sections
625 # sections => %section descriptions
628 sub output_highlight {
629 my $contents = join "\n",@_;
633 # if (!defined $contents) {
635 # confess "output_highlight got called with no args?\n";
638 # print STDERR "contents b4:$contents\n";
641 # print STDERR "contents af:$contents\n";
643 foreach $line (split "\n", $contents) {
644 if (! $output_preformatted) {
648 if (! $output_preformatted) {
649 print $lineprefix, $blankline;
652 if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
655 print $lineprefix, $line;
663 # output function in man
664 sub output_function_man(%) {
666 my ($parameter, $section);
669 print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
672 print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
674 print ".SH SYNOPSIS\n";
675 if ($args{'functiontype'} ne "") {
676 print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
678 print ".B \"" . $args{'function'} . "\n";
683 foreach my $parameter (@{$args{'parameterlist'}}) {
684 if ($count == $#{$args{'parameterlist'}}) {
687 $type = $args{'parametertypes'}{$parameter};
688 if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
689 # pointer-to-function
690 print ".BI \"" . $parenth . $1 . "\" " . " \") (" . $2 . ")" . $post . "\"\n";
692 $type =~ s/([^\*])$/$1 /;
693 print ".BI \"" . $parenth . $type . "\" " . " \"" . $post . "\"\n";
699 print ".SH ARGUMENTS\n";
700 foreach $parameter (@{$args{'parameterlist'}}) {
701 my $parameter_name = $parameter;
702 $parameter_name =~ s/\[.*//;
704 print ".IP \"" . $parameter . "\" 12\n";
705 output_highlight($args{'parameterdescs'}{$parameter_name});
707 foreach $section (@{$args{'sectionlist'}}) {
708 print ".SH \"", uc $section, "\"\n";
709 output_highlight($args{'sections'}{$section});
715 sub output_enum_man(%) {
717 my ($parameter, $section);
720 print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
723 print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
725 print ".SH SYNOPSIS\n";
726 print "enum " . $args{'enum'} . " {\n";
728 foreach my $parameter (@{$args{'parameterlist'}}) {
729 print ".br\n.BI \" $parameter\"\n";
730 if ($count == $#{$args{'parameterlist'}}) {
740 print ".SH Constants\n";
741 foreach $parameter (@{$args{'parameterlist'}}) {
742 my $parameter_name = $parameter;
743 $parameter_name =~ s/\[.*//;
745 print ".IP \"" . $parameter . "\" 12\n";
746 output_highlight($args{'parameterdescs'}{$parameter_name});
748 foreach $section (@{$args{'sectionlist'}}) {
749 print ".SH \"$section\"\n";
750 output_highlight($args{'sections'}{$section});
755 # output struct in man
756 sub output_struct_man(%) {
758 my ($parameter, $section);
760 print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
763 print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
765 my $declaration = $args{'definition'};
766 $declaration =~ s/\t/ /g;
767 $declaration =~ s/\n/"\n.br\n.BI \"/g;
768 print ".SH SYNOPSIS\n";
769 print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
770 print ".BI \"$declaration\n};\n.br\n\n";
772 print ".SH Members\n";
773 foreach $parameter (@{$args{'parameterlist'}}) {
774 ($parameter =~ /^#/) && next;
776 my $parameter_name = $parameter;
777 $parameter_name =~ s/\[.*//;
779 ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
780 print ".IP \"" . $parameter . "\" 12\n";
781 output_highlight($args{'parameterdescs'}{$parameter_name});
783 foreach $section (@{$args{'sectionlist'}}) {
784 print ".SH \"$section\"\n";
785 output_highlight($args{'sections'}{$section});
790 # output typedef in man
791 sub output_typedef_man(%) {
793 my ($parameter, $section);
795 print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
798 print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
800 foreach $section (@{$args{'sectionlist'}}) {
801 print ".SH \"$section\"\n";
802 output_highlight($args{'sections'}{$section});
806 sub output_blockhead_man(%) {
808 my ($parameter, $section);
811 print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
813 foreach $section (@{$args{'sectionlist'}}) {
814 print ".SH \"$section\"\n";
815 output_highlight($args{'sections'}{$section});
820 # output in restructured text
824 # This could use some work; it's used to output the DOC: sections, and
825 # starts by putting out the name of the doc section itself, but that tends
826 # to duplicate a header already in the template file.
828 sub output_blockhead_rst(%) {
830 my ($parameter, $section);
832 foreach $section (@{$args{'sectionlist'}}) {
833 next if (defined($nosymbol_table{$section}));
835 if ($output_selection != OUTPUT_INCLUDE) {
836 print "**$section**\n\n";
838 print_lineno($section_start_lines{$section});
839 output_highlight_rst($args{'sections'}{$section});
845 # Apply the RST highlights to a sub-block of text.
847 sub highlight_block($) {
848 # The dohighlight kludge requires the text be called $contents
849 my $contents = shift;
856 # Regexes used only here.
858 my $sphinx_literal = '^[^.].*::$';
859 my $sphinx_cblock = '^\.\.\ +code-block::';
861 sub output_highlight_rst {
862 my $input = join "\n",@_;
869 foreach $line (split "\n",$input) {
871 # If we're in a literal block, see if we should drop out
872 # of it. Otherwise pass the line straight through unmunged.
875 if (! ($line =~ /^\s*$/)) {
877 # If this is the first non-blank line in a literal
878 # block we need to figure out what the proper indent is.
880 if ($litprefix eq "") {
882 $litprefix = '^' . $1;
883 $output .= $line . "\n";
884 } elsif (! ($line =~ /$litprefix/)) {
887 $output .= $line . "\n";
890 $output .= $line . "\n";
894 # Not in a literal block (or just dropped out)
897 $block .= $line . "\n";
898 if (($line =~ /$sphinx_literal/) || ($line =~ /$sphinx_cblock/)) {
901 $output .= highlight_block($block);
908 $output .= highlight_block($block);
910 foreach $line (split "\n", $output) {
911 print $lineprefix . $line . "\n";
915 sub output_function_rst(%) {
917 my ($parameter, $section);
918 my $oldprefix = $lineprefix;
922 if ($sphinx_major < 3) {
923 if ($args{'typedef'}) {
924 print ".. c:type:: ". $args{'function'} . "\n\n";
925 print_lineno($declaration_start_line);
926 print " **Typedef**: ";
928 output_highlight_rst($args{'purpose'});
929 $start = "\n\n**Syntax**\n\n ``";
932 print ".. c:function:: ";
935 if ($args{'typedef'} || $args{'functiontype'} eq "") {
937 print ".. c:macro:: ". $args{'function'} . "\n\n";
939 print ".. c:function:: ";
942 if ($args{'typedef'}) {
943 print_lineno($declaration_start_line);
944 print " **Typedef**: ";
946 output_highlight_rst($args{'purpose'});
947 $start = "\n\n**Syntax**\n\n ``";
949 print "``" if ($is_macro);
952 if ($args{'functiontype'} ne "") {
953 $start .= $args{'functiontype'} . " " . $args{'function'} . " (";
955 $start .= $args{'function'} . " (";
960 foreach my $parameter (@{$args{'parameterlist'}}) {
965 $type = $args{'parametertypes'}{$parameter};
967 if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
968 # pointer-to-function
969 print $1 . $parameter . ") (" . $2 . ")";
979 if (!$args{'typedef'}) {
980 print_lineno($declaration_start_line);
982 output_highlight_rst($args{'purpose'});
986 print "**Parameters**\n\n";
988 foreach $parameter (@{$args{'parameterlist'}}) {
989 my $parameter_name = $parameter;
990 $parameter_name =~ s/\[.*//;
991 $type = $args{'parametertypes'}{$parameter};
996 print "``$parameter``\n";
999 print_lineno($parameterdesc_start_lines{$parameter_name});
1001 if (defined($args{'parameterdescs'}{$parameter_name}) &&
1002 $args{'parameterdescs'}{$parameter_name} ne $undescribed) {
1003 output_highlight_rst($args{'parameterdescs'}{$parameter_name});
1005 print " *undescribed*\n";
1010 $lineprefix = $oldprefix;
1011 output_section_rst(@_);
1014 sub output_section_rst(%) {
1015 my %args = %{$_[0]};
1017 my $oldprefix = $lineprefix;
1020 foreach $section (@{$args{'sectionlist'}}) {
1021 print "**$section**\n\n";
1022 print_lineno($section_start_lines{$section});
1023 output_highlight_rst($args{'sections'}{$section});
1027 $lineprefix = $oldprefix;
1030 sub output_enum_rst(%) {
1031 my %args = %{$_[0]};
1033 my $oldprefix = $lineprefix;
1036 if ($sphinx_major < 3) {
1037 my $name = "enum " . $args{'enum'};
1038 print "\n\n.. c:type:: " . $name . "\n\n";
1040 my $name = $args{'enum'};
1041 print "\n\n.. c:enum:: " . $name . "\n\n";
1043 print_lineno($declaration_start_line);
1045 output_highlight_rst($args{'purpose'});
1048 print "**Constants**\n\n";
1050 foreach $parameter (@{$args{'parameterlist'}}) {
1051 print "``$parameter``\n";
1052 if ($args{'parameterdescs'}{$parameter} ne $undescribed) {
1053 output_highlight_rst($args{'parameterdescs'}{$parameter});
1055 print " *undescribed*\n";
1060 $lineprefix = $oldprefix;
1061 output_section_rst(@_);
1064 sub output_typedef_rst(%) {
1065 my %args = %{$_[0]};
1067 my $oldprefix = $lineprefix;
1070 if ($sphinx_major < 3) {
1071 $name = "typedef " . $args{'typedef'};
1073 $name = $args{'typedef'};
1075 print "\n\n.. c:type:: " . $name . "\n\n";
1076 print_lineno($declaration_start_line);
1078 output_highlight_rst($args{'purpose'});
1081 $lineprefix = $oldprefix;
1082 output_section_rst(@_);
1085 sub output_struct_rst(%) {
1086 my %args = %{$_[0]};
1088 my $oldprefix = $lineprefix;
1090 if ($sphinx_major < 3) {
1091 my $name = $args{'type'} . " " . $args{'struct'};
1092 print "\n\n.. c:type:: " . $name . "\n\n";
1094 my $name = $args{'struct'};
1095 print "\n\n.. c:struct:: " . $name . "\n\n";
1097 print_lineno($declaration_start_line);
1099 output_highlight_rst($args{'purpose'});
1102 print "**Definition**\n\n";
1104 my $declaration = $args{'definition'};
1105 $declaration =~ s/\t/ /g;
1106 print " " . $args{'type'} . " " . $args{'struct'} . " {\n$declaration };\n\n";
1108 print "**Members**\n\n";
1110 foreach $parameter (@{$args{'parameterlist'}}) {
1111 ($parameter =~ /^#/) && next;
1113 my $parameter_name = $parameter;
1114 $parameter_name =~ s/\[.*//;
1116 ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1117 $type = $args{'parametertypes'}{$parameter};
1118 print_lineno($parameterdesc_start_lines{$parameter_name});
1119 print "``" . $parameter . "``\n";
1120 output_highlight_rst($args{'parameterdescs'}{$parameter_name});
1125 $lineprefix = $oldprefix;
1126 output_section_rst(@_);
1129 ## none mode output functions
1131 sub output_function_none(%) {
1134 sub output_enum_none(%) {
1137 sub output_typedef_none(%) {
1140 sub output_struct_none(%) {
1143 sub output_blockhead_none(%) {
1147 # generic output function for all types (function, struct/union, typedef, enum);
1148 # calls the generated, variable output_ function name based on
1149 # functype and output_mode
1150 sub output_declaration {
1153 my $functype = shift;
1154 my $func = "output_${functype}_$output_mode";
1156 return if (defined($nosymbol_table{$name}));
1158 if (($output_selection == OUTPUT_ALL) ||
1159 (($output_selection == OUTPUT_INCLUDE ||
1160 $output_selection == OUTPUT_EXPORTED) &&
1161 defined($function_table{$name})) ||
1162 ($output_selection == OUTPUT_INTERNAL &&
1163 !($functype eq "function" && defined($function_table{$name}))))
1171 # generic output function - calls the right one based on current output mode.
1172 sub output_blockhead {
1174 my $func = "output_blockhead_" . $output_mode;
1180 # takes a declaration (struct, union, enum, typedef) and
1181 # invokes the right handler. NOT called for functions.
1182 sub dump_declaration($$) {
1184 my ($prototype, $file) = @_;
1185 my $func = "dump_" . $decl_type;
1189 sub dump_union($$) {
1193 sub dump_struct($$) {
1197 if ($x =~ /(struct|union)\s+(\w+)\s*\{(.*)\}(\s*(__packed|__aligned|____cacheline_aligned_in_smp|____cacheline_aligned|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*/) {
1199 $declaration_name = $2;
1202 # ignore members marked private:
1203 $members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gosi;
1204 $members =~ s/\/\*\s*private:.*//gosi;
1206 $members =~ s/\/\*.*?\*\///gos;
1208 $members =~ s/\s*__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)/ /gi;
1209 $members =~ s/\s*__aligned\s*\([^;]*\)/ /gos;
1210 $members =~ s/\s*__packed\s*/ /gos;
1211 $members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos;
1212 $members =~ s/\s*____cacheline_aligned_in_smp/ /gos;
1213 $members =~ s/\s*____cacheline_aligned/ /gos;
1215 # replace DECLARE_BITMAP
1216 $members =~ s/__ETHTOOL_DECLARE_LINK_MODE_MASK\s*\(([^\)]+)\)/DECLARE_BITMAP($1, __ETHTOOL_LINK_MODE_MASK_NBITS)/gos;
1217 $members =~ s/DECLARE_BITMAP\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
1218 # replace DECLARE_HASHTABLE
1219 $members =~ s/DECLARE_HASHTABLE\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[1 << (($2) - 1)\]/gos;
1220 # replace DECLARE_KFIFO
1221 $members =~ s/DECLARE_KFIFO\s*\(([^,)]+),\s*([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos;
1222 # replace DECLARE_KFIFO_PTR
1223 $members =~ s/DECLARE_KFIFO_PTR\s*\(([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos;
1225 my $declaration = $members;
1227 # Split nested struct/union elements as newer ones
1228 while ($members =~ m/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/) {
1233 foreach my $id(split /,/, $ids) {
1234 $newmember .= "$maintype $id; ";
1237 $id =~ s/^\s*\**(\S+)\s*/$1/;
1238 foreach my $arg (split /;/, $content) {
1239 next if ($arg =~ m/^\s*$/);
1240 if ($arg =~ m/^([^\(]+\(\*?\s*)([\w\.]*)(\s*\).*)/) {
1241 # pointer-to-function
1246 if ($id =~ m/^\s*$/) {
1247 # anonymous struct/union
1248 $newmember .= "$type$name$extra; ";
1250 $newmember .= "$type$id.$name$extra; ";
1258 $arg =~ s/:\s*\d+\s*//g;
1260 $arg =~ s/\[.*\]//g;
1261 # The type may have multiple words,
1262 # and multiple IDs can be defined, like:
1263 # const struct foo, *bar, foobar
1264 # So, we remove spaces when parsing the
1265 # names, in order to match just names
1266 # and commas for the names
1267 $arg =~ s/\s*,\s*/,/g;
1268 if ($arg =~ m/(.*)\s+([\S+,]+)/) {
1272 $newmember .= "$arg; ";
1275 foreach my $name (split /,/, $names) {
1276 $name =~ s/^\s*\**(\S+)\s*/$1/;
1277 next if (($name =~ m/^\s*$/));
1278 if ($id =~ m/^\s*$/) {
1279 # anonymous struct/union
1280 $newmember .= "$type $name; ";
1282 $newmember .= "$type $id.$name; ";
1288 $members =~ s/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/$newmember/;
1291 # Ignore other nested elements, like enums
1292 $members =~ s/(\{[^\{\}]*\})//g;
1294 create_parameterlist($members, ';', $file, $declaration_name);
1295 check_sections($file, $declaration_name, $decl_type, $sectcheck, $struct_actual);
1297 # Adjust declaration for better display
1298 $declaration =~ s/([\{;])/$1\n/g;
1299 $declaration =~ s/\}\s+;/};/g;
1300 # Better handle inlined enums
1301 do {} while ($declaration =~ s/(enum\s+\{[^\}]+),([^\n])/$1,\n$2/);
1303 my @def_args = split /\n/, $declaration;
1306 foreach my $clause (@def_args) {
1307 $clause =~ s/^\s+//;
1308 $clause =~ s/\s+$//;
1309 $clause =~ s/\s+/ /;
1311 $level-- if ($clause =~ m/(\})/ && $level > 1);
1312 if (!($clause =~ m/^\s*#/)) {
1313 $declaration .= "\t" x $level;
1315 $declaration .= "\t" . $clause . "\n";
1316 $level++ if ($clause =~ m/(\{)/ && !($clause =~m/\}/));
1318 output_declaration($declaration_name,
1320 {'struct' => $declaration_name,
1321 'module' => $modulename,
1322 'definition' => $declaration,
1323 'parameterlist' => \@parameterlist,
1324 'parameterdescs' => \%parameterdescs,
1325 'parametertypes' => \%parametertypes,
1326 'sectionlist' => \@sectionlist,
1327 'sections' => \%sections,
1328 'purpose' => $declaration_purpose,
1329 'type' => $decl_type
1333 print STDERR "${file}:$.: error: Cannot parse struct or union!\n";
1339 sub show_warnings($$) {
1340 my $functype = shift;
1343 return 0 if (defined($nosymbol_table{$name}));
1345 return 1 if ($output_selection == OUTPUT_ALL);
1347 if ($output_selection == OUTPUT_EXPORTED) {
1348 if (defined($function_table{$name})) {
1354 if ($output_selection == OUTPUT_INTERNAL) {
1355 if (!($functype eq "function" && defined($function_table{$name}))) {
1361 if ($output_selection == OUTPUT_INCLUDE) {
1362 if (defined($function_table{$name})) {
1368 die("Please add the new output type at show_warnings()");
1377 $x =~ s@/\*.*?\*/@@gos; # strip comments.
1378 # strip #define macros inside enums
1379 $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos;
1381 if ($x =~ /typedef\s+enum\s*\{(.*)\}\s*(\w*)\s*;/) {
1382 $declaration_name = $2;
1384 } elsif ($x =~ /enum\s+(\w*)\s*\{(.*)\}/) {
1385 $declaration_name = $1;
1389 if ($declaration_name) {
1392 $members =~ s/\s+$//;
1394 foreach my $arg (split ',', $members) {
1395 $arg =~ s/^\s*(\w+).*/$1/;
1396 push @parameterlist, $arg;
1397 if (!$parameterdescs{$arg}) {
1398 $parameterdescs{$arg} = $undescribed;
1399 if (show_warnings("enum", $declaration_name)) {
1400 print STDERR "${file}:$.: warning: Enum value '$arg' not described in enum '$declaration_name'\n";
1403 $_members{$arg} = 1;
1406 while (my ($k, $v) = each %parameterdescs) {
1407 if (!exists($_members{$k})) {
1408 if (show_warnings("enum", $declaration_name)) {
1409 print STDERR "${file}:$.: warning: Excess enum value '$k' description in '$declaration_name'\n";
1414 output_declaration($declaration_name,
1416 {'enum' => $declaration_name,
1417 'module' => $modulename,
1418 'parameterlist' => \@parameterlist,
1419 'parameterdescs' => \%parameterdescs,
1420 'sectionlist' => \@sectionlist,
1421 'sections' => \%sections,
1422 'purpose' => $declaration_purpose
1425 print STDERR "${file}:$.: error: Cannot parse enum!\n";
1430 my $typedef_type = qr { ((?:\s+[\w\*]+){1,8})\s* }x;
1431 my $typedef_ident = qr { \*?\s*(\w\S+)\s* }x;
1432 my $typedef_args = qr { \s*\((.*)\); }x;
1434 my $typedef1 = qr { typedef$typedef_type\($typedef_ident\)$typedef_args }x;
1435 my $typedef2 = qr { typedef$typedef_type$typedef_ident$typedef_args }x;
1437 sub dump_typedef($$) {
1441 $x =~ s@/\*.*?\*/@@gos; # strip comments.
1443 # Parse function typedef prototypes
1444 if ($x =~ $typedef1 || $x =~ $typedef2) {
1446 $declaration_name = $2;
1448 $return_type =~ s/^\s+//;
1450 create_parameterlist($args, ',', $file, $declaration_name);
1452 output_declaration($declaration_name,
1454 {'function' => $declaration_name,
1456 'module' => $modulename,
1457 'functiontype' => $return_type,
1458 'parameterlist' => \@parameterlist,
1459 'parameterdescs' => \%parameterdescs,
1460 'parametertypes' => \%parametertypes,
1461 'sectionlist' => \@sectionlist,
1462 'sections' => \%sections,
1463 'purpose' => $declaration_purpose
1468 while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
1469 $x =~ s/\(*.\)\s*;$/;/;
1470 $x =~ s/\[*.\]\s*;$/;/;
1473 if ($x =~ /typedef.*\s+(\w+)\s*;/) {
1474 $declaration_name = $1;
1476 output_declaration($declaration_name,
1478 {'typedef' => $declaration_name,
1479 'module' => $modulename,
1480 'sectionlist' => \@sectionlist,
1481 'sections' => \%sections,
1482 'purpose' => $declaration_purpose
1486 print STDERR "${file}:$.: error: Cannot parse typedef!\n";
1491 sub save_struct_actual($) {
1494 # strip all spaces from the actual param so that it looks like one string item
1495 $actual =~ s/\s*//g;
1496 $struct_actual = $struct_actual . $actual . " ";
1499 sub create_parameterlist($$$$) {
1501 my $splitter = shift;
1503 my $declaration_name = shift;
1507 # temporarily replace commas inside function pointer definition
1508 while ($args =~ /(\([^\),]+),/) {
1509 $args =~ s/(\([^\),]+),/$1#/g;
1512 foreach my $arg (split($splitter, $args)) {
1514 $arg =~ s/\/\*.*\*\///;
1515 # strip leading/trailing spaces
1521 # Treat preprocessor directive as a typeless variable just to fill
1522 # corresponding data structures "correctly". Catch it later in
1524 push_parameter($arg, "", "", $file);
1525 } elsif ($arg =~ m/\(.+\)\s*\(/) {
1526 # pointer-to-function
1528 $arg =~ m/[^\(]+\(\*?\s*([\w\.]*)\s*\)/;
1531 $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
1532 save_struct_actual($param);
1533 push_parameter($param, $type, $arg, $file, $declaration_name);
1535 $arg =~ s/\s*:\s*/:/g;
1536 $arg =~ s/\s*\[/\[/g;
1538 my @args = split('\s*,\s*', $arg);
1539 if ($args[0] =~ m/\*/) {
1540 $args[0] =~ s/(\*+)\s*/ $1/;
1544 if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
1546 push(@first_arg, split('\s+', $1));
1547 push(@first_arg, $2);
1549 @first_arg = split('\s+', shift @args);
1552 unshift(@args, pop @first_arg);
1553 $type = join " ", @first_arg;
1555 foreach $param (@args) {
1556 if ($param =~ m/^(\*+)\s*(.*)/) {
1557 save_struct_actual($2);
1559 push_parameter($2, "$type $1", $arg, $file, $declaration_name);
1561 elsif ($param =~ m/(.*?):(\d+)/) {
1562 if ($type ne "") { # skip unnamed bit-fields
1563 save_struct_actual($1);
1564 push_parameter($1, "$type:$2", $arg, $file, $declaration_name)
1568 save_struct_actual($param);
1569 push_parameter($param, $type, $arg, $file, $declaration_name);
1576 sub push_parameter($$$$$) {
1579 my $org_arg = shift;
1581 my $declaration_name = shift;
1583 if (($anon_struct_union == 1) && ($type eq "") &&
1585 return; # ignore the ending }; from anon. struct/union
1588 $anon_struct_union = 0;
1589 $param =~ s/[\[\)].*//;
1591 if ($type eq "" && $param =~ /\.\.\.$/)
1593 if (!$param =~ /\w\.\.\.$/) {
1594 # handles unnamed variable parameters
1597 elsif ($param =~ /\w\.\.\.$/) {
1598 # for named variable parameters of the form `x...`, remove the dots
1599 $param =~ s/\.\.\.$//;
1601 if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
1602 $parameterdescs{$param} = "variable arguments";
1605 elsif ($type eq "" && ($param eq "" or $param eq "void"))
1608 $parameterdescs{void} = "no arguments";
1610 elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
1611 # handle unnamed (anonymous) union or struct:
1614 $param = "{unnamed_" . $param . "}";
1615 $parameterdescs{$param} = "anonymous\n";
1616 $anon_struct_union = 1;
1619 # warn if parameter has no description
1620 # (but ignore ones starting with # as these are not parameters
1621 # but inline preprocessor statements);
1622 # Note: It will also ignore void params and unnamed structs/unions
1623 if (!defined $parameterdescs{$param} && $param !~ /^#/) {
1624 $parameterdescs{$param} = $undescribed;
1626 if (show_warnings($type, $declaration_name) && $param !~ /\./) {
1628 "${file}:$.: warning: Function parameter or member '$param' not described in '$declaration_name'\n";
1633 # strip spaces from $param so that it is one continuous string
1634 # on @parameterlist;
1635 # this fixes a problem where check_sections() cannot find
1636 # a parameter like "addr[6 + 2]" because it actually appears
1637 # as "addr[6", "+", "2]" on the parameter list;
1638 # but it's better to maintain the param string unchanged for output,
1639 # so just weaken the string compare in check_sections() to ignore
1640 # "[blah" in a parameter string;
1641 ###$param =~ s/\s*//g;
1642 push @parameterlist, $param;
1643 $org_arg =~ s/\s\s+/ /g;
1644 $parametertypes{$param} = $org_arg;
1647 sub check_sections($$$$$) {
1648 my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck) = @_;
1649 my @sects = split ' ', $sectcheck;
1650 my @prms = split ' ', $prmscheck;
1653 my $prm_clean; # strip trailing "[array size]" and/or beginning "*"
1655 foreach $sx (0 .. $#sects) {
1657 foreach $px (0 .. $#prms) {
1658 $prm_clean = $prms[$px];
1659 $prm_clean =~ s/\[.*\]//;
1660 $prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
1661 # ignore array size in a parameter string;
1662 # however, the original param string may contain
1663 # spaces, e.g.: addr[6 + 2]
1664 # and this appears in @prms as "addr[6" since the
1665 # parameter list is split at spaces;
1666 # hence just ignore "[..." for the sections check;
1667 $prm_clean =~ s/\[.*//;
1669 ##$prm_clean =~ s/^\**//;
1670 if ($prm_clean eq $sects[$sx]) {
1676 if ($decl_type eq "function") {
1677 print STDERR "${file}:$.: warning: " .
1678 "Excess function parameter " .
1680 "description in '$decl_name'\n";
1688 # Checks the section describing the return value of a function.
1689 sub check_return_section {
1691 my $declaration_name = shift;
1692 my $return_type = shift;
1694 # Ignore an empty return type (It's a macro)
1695 # Ignore functions with a "void" return type. (But don't ignore "void *")
1696 if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) {
1700 if (!defined($sections{$section_return}) ||
1701 $sections{$section_return} eq "") {
1702 print STDERR "${file}:$.: warning: " .
1703 "No description found for return value of " .
1704 "'$declaration_name'\n";
1710 # takes a function prototype and the name of the current file being
1711 # processed and spits out all the details stored in the global
1713 sub dump_function($$) {
1714 my $prototype = shift;
1718 print_lineno($new_start_line);
1720 $prototype =~ s/^static +//;
1721 $prototype =~ s/^extern +//;
1722 $prototype =~ s/^asmlinkage +//;
1723 $prototype =~ s/^inline +//;
1724 $prototype =~ s/^__inline__ +//;
1725 $prototype =~ s/^__inline +//;
1726 $prototype =~ s/^__always_inline +//;
1727 $prototype =~ s/^noinline +//;
1728 $prototype =~ s/__init +//;
1729 $prototype =~ s/__init_or_module +//;
1730 $prototype =~ s/__meminit +//;
1731 $prototype =~ s/__must_check +//;
1732 $prototype =~ s/__weak +//;
1733 $prototype =~ s/__sched +//;
1734 $prototype =~ s/__printf\s*\(\s*\d*\s*,\s*\d*\s*\) +//;
1735 my $define = $prototype =~ s/^#\s*define\s+//; #ak added
1736 $prototype =~ s/__attribute__\s*\(\(
1738 [\w\s]++ # attribute name
1739 (?:\([^)]*+\))? # attribute arguments
1740 \s*+,? # optional comma at the end
1744 # Yes, this truly is vile. We are looking for:
1745 # 1. Return type (may be nothing if we're looking at a macro)
1747 # 3. Function parameters.
1749 # All the while we have to watch out for function pointer parameters
1750 # (which IIRC is what the two sections are for), C types (these
1751 # regexps don't even start to express all the possibilities), and
1754 # If you mess with these regexps, it's a good idea to check that
1755 # the following functions' documentation still comes out right:
1756 # - parport_register_device (function pointer parameters)
1757 # - atomic_set (macro)
1758 # - pci_match_device, __copy_to_user (long return type)
1760 if ($define && $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s+/) {
1761 # This is an object-like macro, it has no return type and no parameter
1763 # Function-like macros are not allowed to have spaces between
1764 # declaration_name and opening parenthesis (notice the \s+).
1766 $declaration_name = $2;
1768 } elsif ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1769 $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1770 $prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1771 $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1772 $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1773 $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1774 $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1775 $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1776 $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1777 $prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1778 $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1779 $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1780 $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1781 $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1782 $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1783 $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1784 $prototype =~ m/^(\w+\s+\w+\s*\*+\s*\w+\s*\*+\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/) {
1786 $declaration_name = $2;
1789 create_parameterlist($args, ',', $file, $declaration_name);
1791 print STDERR "${file}:$.: warning: cannot understand function prototype: '$prototype'\n";
1795 my $prms = join " ", @parameterlist;
1796 check_sections($file, $declaration_name, "function", $sectcheck, $prms);
1798 # This check emits a lot of warnings at the moment, because many
1799 # functions don't have a 'Return' doc section. So until the number
1800 # of warnings goes sufficiently down, the check is only performed in
1802 # TODO: always perform the check.
1803 if ($verbose && !$noret) {
1804 check_return_section($file, $declaration_name, $return_type);
1807 # The function parser can be called with a typedef parameter.
1809 if ($return_type =~ /typedef/) {
1810 output_declaration($declaration_name,
1812 {'function' => $declaration_name,
1814 'module' => $modulename,
1815 'functiontype' => $return_type,
1816 'parameterlist' => \@parameterlist,
1817 'parameterdescs' => \%parameterdescs,
1818 'parametertypes' => \%parametertypes,
1819 'sectionlist' => \@sectionlist,
1820 'sections' => \%sections,
1821 'purpose' => $declaration_purpose
1824 output_declaration($declaration_name,
1826 {'function' => $declaration_name,
1827 'module' => $modulename,
1828 'functiontype' => $return_type,
1829 'parameterlist' => \@parameterlist,
1830 'parameterdescs' => \%parameterdescs,
1831 'parametertypes' => \%parametertypes,
1832 'sectionlist' => \@sectionlist,
1833 'sections' => \%sections,
1834 'purpose' => $declaration_purpose
1841 %parameterdescs = ();
1842 %parametertypes = ();
1843 @parameterlist = ();
1847 $struct_actual = "";
1850 $state = STATE_NORMAL;
1851 $inline_doc_state = STATE_INLINE_NA;
1854 sub tracepoint_munge($) {
1856 my $tracepointname = 0;
1857 my $tracepointargs = 0;
1859 if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
1860 $tracepointname = $1;
1862 if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
1863 $tracepointname = $1;
1865 if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
1866 $tracepointname = $2;
1868 $tracepointname =~ s/^\s+//; #strip leading whitespace
1869 if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
1870 $tracepointargs = $1;
1872 if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
1873 print STDERR "${file}:$.: warning: Unrecognized tracepoint format: \n".
1876 $prototype = "static inline void trace_$tracepointname($tracepointargs)";
1880 sub syscall_munge() {
1883 $prototype =~ s@[\r\n]+@ @gos; # strip newlines/CR's
1884 ## if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
1885 if ($prototype =~ m/SYSCALL_DEFINE0/) {
1887 ## $prototype = "long sys_$1(void)";
1890 $prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
1891 if ($prototype =~ m/long (sys_.*?),/) {
1892 $prototype =~ s/,/\(/;
1894 $prototype =~ s/\)/\(void\)/;
1897 # now delete all of the odd-number commas in $prototype
1898 # so that arg types & arg names don't have a comma between them
1900 my $len = length($prototype);
1902 $len = 0; # skip the for-loop
1904 for (my $ix = 0; $ix < $len; $ix++) {
1905 if (substr($prototype, $ix, 1) eq ',') {
1907 if ($count % 2 == 1) {
1908 substr($prototype, $ix, 1) = ' ';
1914 sub process_proto_function($$) {
1918 $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1920 if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
1923 elsif ($x =~ /([^\{]*)/) {
1927 if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
1928 $prototype =~ s@/\*.*?\*/@@gos; # strip comments.
1929 $prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1930 $prototype =~ s@^\s+@@gos; # strip leading spaces
1932 # Handle prototypes for function pointers like:
1933 # int (*pcs_config)(struct foo)
1934 $prototype =~ s@^(\S+\s+)\(\s*\*(\S+)\)@$1$2@gos;
1936 if ($prototype =~ /SYSCALL_DEFINE/) {
1939 if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
1940 $prototype =~ /DEFINE_SINGLE_EVENT/)
1942 tracepoint_munge($file);
1944 dump_function($prototype, $file);
1949 sub process_proto_type($$) {
1953 $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1954 $x =~ s@^\s+@@gos; # strip leading spaces
1955 $x =~ s@\s+$@@gos; # strip trailing spaces
1956 $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1959 # To distinguish preprocessor directive from regular declaration later.
1964 if ( $x =~ /([^\{\};]*)([\{\};])(.*)/ ) {
1965 if( length $prototype ) {
1968 $prototype .= $1 . $2;
1969 ($2 eq '{') && $brcount++;
1970 ($2 eq '}') && $brcount--;
1971 if (($2 eq ';') && ($brcount == 0)) {
1972 dump_declaration($prototype, $file);
1985 sub map_filename($) {
1987 my ($orig_file) = @_;
1989 if (defined($ENV{'SRCTREE'})) {
1990 $file = "$ENV{'SRCTREE'}" . "/" . $orig_file;
1995 if (defined($source_map{$file})) {
1996 $file = $source_map{$file};
2002 sub process_export_file($) {
2003 my ($orig_file) = @_;
2004 my $file = map_filename($orig_file);
2006 if (!open(IN,"<$file")) {
2007 print STDERR "Error: Cannot open file $file\n";
2013 if (/$export_symbol/) {
2014 next if (defined($nosymbol_table{$2}));
2015 $function_table{$2} = 1;
2023 # Parsers for the various processing states.
2025 # STATE_NORMAL: looking for the /** to begin everything.
2027 sub process_normal() {
2028 if (/$doc_start/o) {
2029 $state = STATE_NAME; # next line is always the function name
2031 $declaration_start_line = $. + 1;
2036 # STATE_NAME: Looking for the "name - description" line
2038 sub process_name($$) {
2043 if (/$doc_block/o) {
2044 $state = STATE_DOCBLOCK;
2046 $new_start_line = $.;
2049 $section = $section_intro;
2054 elsif (/$doc_decl/o) {
2056 if (/\s*([\w\s]+?)(\(\))?\s*-/) {
2060 $state = STATE_BODY;
2061 # if there's no @param blocks need to set up default section
2064 $section = $section_default;
2065 $new_start_line = $. + 1;
2067 # strip leading/trailing/multiple spaces
2071 $descr =~ s/\s+/ /g;
2072 $declaration_purpose = $descr;
2073 $state = STATE_BODY_MAYBE;
2075 $declaration_purpose = "";
2078 if (($declaration_purpose eq "") && $verbose) {
2079 print STDERR "${file}:$.: warning: missing initial short description on line:\n";
2084 if ($identifier =~ m/^struct\b/) {
2085 $decl_type = 'struct';
2086 } elsif ($identifier =~ m/^union\b/) {
2087 $decl_type = 'union';
2088 } elsif ($identifier =~ m/^enum\b/) {
2089 $decl_type = 'enum';
2090 } elsif ($identifier =~ m/^typedef\b/) {
2091 $decl_type = 'typedef';
2093 $decl_type = 'function';
2097 print STDERR "${file}:$.: info: Scanning doc for $identifier\n";
2100 print STDERR "${file}:$.: warning: Cannot understand $_ on line $.",
2101 " - I thought it was a doc line\n";
2103 $state = STATE_NORMAL;
2109 # STATE_BODY and STATE_BODY_MAYBE: the bulk of a kerneldoc comment.
2111 sub process_body($$) {
2114 # Until all named variable macro parameters are
2115 # documented using the bare name (`x`) rather than with
2116 # dots (`x...`), strip the dots:
2117 if ($section =~ /\w\.\.\.$/) {
2118 $section =~ s/\.\.\.$//;
2121 print STDERR "${file}:$.: warning: Variable macro arguments should be documented without dots\n";
2126 if ($state == STATE_BODY_WITH_BLANK_LINE && /^\s*\*\s?\S/) {
2127 dump_section($file, $section, $contents);
2128 $section = $section_default;
2129 $new_start_line = $.;
2133 if (/$doc_sect/i) { # case insensitive for supported section names
2137 # map the supported section names to the canonical names
2138 if ($newsection =~ m/^description$/i) {
2139 $newsection = $section_default;
2140 } elsif ($newsection =~ m/^context$/i) {
2141 $newsection = $section_context;
2142 } elsif ($newsection =~ m/^returns?$/i) {
2143 $newsection = $section_return;
2144 } elsif ($newsection =~ m/^\@return$/) {
2145 # special: @return is a section, not a param description
2146 $newsection = $section_return;
2149 if (($contents ne "") && ($contents ne "\n")) {
2150 if (!$in_doc_sect && $verbose) {
2151 print STDERR "${file}:$.: warning: contents before sections\n";
2154 dump_section($file, $section, $contents);
2155 $section = $section_default;
2159 $state = STATE_BODY;
2160 $contents = $newcontents;
2161 $new_start_line = $.;
2162 while (substr($contents, 0, 1) eq " ") {
2163 $contents = substr($contents, 1);
2165 if ($contents ne "") {
2168 $section = $newsection;
2169 $leading_space = undef;
2170 } elsif (/$doc_end/) {
2171 if (($contents ne "") && ($contents ne "\n")) {
2172 dump_section($file, $section, $contents);
2173 $section = $section_default;
2176 # look for doc_com + <text> + doc_end:
2177 if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
2178 print STDERR "${file}:$.: warning: suspicious ending line: $_";
2183 $state = STATE_PROTO;
2185 $new_start_line = $. + 1;
2186 } elsif (/$doc_content/) {
2188 if ($section eq $section_context) {
2189 dump_section($file, $section, $contents);
2190 $section = $section_default;
2192 $new_start_line = $.;
2193 $state = STATE_BODY;
2195 if ($section ne $section_default) {
2196 $state = STATE_BODY_WITH_BLANK_LINE;
2198 $state = STATE_BODY;
2202 } elsif ($state == STATE_BODY_MAYBE) {
2203 # Continued declaration purpose
2204 chomp($declaration_purpose);
2205 $declaration_purpose .= " " . $1;
2206 $declaration_purpose =~ s/\s+/ /g;
2209 if ($section =~ m/^@/ || $section eq $section_context) {
2210 if (!defined $leading_space) {
2211 if ($cont =~ m/^(\s+)/) {
2212 $leading_space = $1;
2214 $leading_space = "";
2217 $cont =~ s/^$leading_space//;
2219 $contents .= $cont . "\n";
2222 # i dont know - bad line? ignore.
2223 print STDERR "${file}:$.: warning: bad line: $_";
2230 # STATE_PROTO: reading a function/whatever prototype.
2232 sub process_proto($$) {
2235 if (/$doc_inline_oneline/) {
2238 if ($contents ne "") {
2240 dump_section($file, $section, $contents);
2241 $section = $section_default;
2244 } elsif (/$doc_inline_start/) {
2245 $state = STATE_INLINE;
2246 $inline_doc_state = STATE_INLINE_NAME;
2247 } elsif ($decl_type eq 'function') {
2248 process_proto_function($_, $file);
2250 process_proto_type($_, $file);
2255 # STATE_DOCBLOCK: within a DOC: block.
2257 sub process_docblock($$) {
2261 dump_doc_section($file, $section, $contents);
2262 $section = $section_default;
2265 %parameterdescs = ();
2266 %parametertypes = ();
2267 @parameterlist = ();
2271 $state = STATE_NORMAL;
2272 } elsif (/$doc_content/) {
2274 $contents .= $blankline;
2276 $contents .= $1 . "\n";
2282 # STATE_INLINE: docbook comments within a prototype.
2284 sub process_inline($$) {
2287 # First line (state 1) needs to be a @parameter
2288 if ($inline_doc_state == STATE_INLINE_NAME && /$doc_inline_sect/o) {
2291 $new_start_line = $.;
2292 if ($contents ne "") {
2293 while (substr($contents, 0, 1) eq " ") {
2294 $contents = substr($contents, 1);
2298 $inline_doc_state = STATE_INLINE_TEXT;
2299 # Documentation block end */
2300 } elsif (/$doc_inline_end/) {
2301 if (($contents ne "") && ($contents ne "\n")) {
2302 dump_section($file, $section, $contents);
2303 $section = $section_default;
2306 $state = STATE_PROTO;
2307 $inline_doc_state = STATE_INLINE_NA;
2309 } elsif (/$doc_content/) {
2310 if ($inline_doc_state == STATE_INLINE_TEXT) {
2311 $contents .= $1 . "\n";
2312 # nuke leading blank lines
2313 if ($contents =~ /^\s*$/) {
2316 } elsif ($inline_doc_state == STATE_INLINE_NAME) {
2317 $inline_doc_state = STATE_INLINE_ERROR;
2318 print STDERR "${file}:$.: warning: ";
2319 print STDERR "Incorrect use of kernel-doc format: $_";
2326 sub process_file($) {
2328 my $initial_section_counter = $section_counter;
2329 my ($orig_file) = @_;
2331 $file = map_filename($orig_file);
2333 if (!open(IN_FILE,"<$file")) {
2334 print STDERR "Error: Cannot open file $file\n";
2341 $section_counter = 0;
2343 while (s/\\\s*$//) {
2346 # Replace tabs by spaces
2347 while ($_ =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {};
2348 # Hand this line to the appropriate state handler
2349 if ($state == STATE_NORMAL) {
2351 } elsif ($state == STATE_NAME) {
2352 process_name($file, $_);
2353 } elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE ||
2354 $state == STATE_BODY_WITH_BLANK_LINE) {
2355 process_body($file, $_);
2356 } elsif ($state == STATE_INLINE) { # scanning for inline parameters
2357 process_inline($file, $_);
2358 } elsif ($state == STATE_PROTO) {
2359 process_proto($file, $_);
2360 } elsif ($state == STATE_DOCBLOCK) {
2361 process_docblock($file, $_);
2365 # Make sure we got something interesting.
2366 if ($initial_section_counter == $section_counter && $
2367 output_mode ne "none") {
2368 if ($output_selection == OUTPUT_INCLUDE) {
2369 print STDERR "${file}:1: warning: '$_' not found\n"
2370 for keys %function_table;
2373 print STDERR "${file}:1: warning: no structured comments found\n";
2380 if ($output_mode eq "rst") {
2381 get_sphinx_version() if (!$sphinx_major);
2384 $kernelversion = get_kernel_version();
2386 # generate a sequence of code that will splice in highlighting information
2387 # using the s// operator.
2388 for (my $k = 0; $k < @highlights; $k++) {
2389 my $pattern = $highlights[$k][0];
2390 my $result = $highlights[$k][1];
2391 # print STDERR "scanning pattern:$pattern, highlight:($result)\n";
2392 $dohighlight .= "\$contents =~ s:$pattern:$result:gs;\n";
2395 # Read the file that maps relative names to absolute names for
2396 # separate source and object directories and for shadow trees.
2397 if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
2398 my ($relname, $absname);
2399 while(<SOURCE_MAP>) {
2401 ($relname, $absname) = (split())[0..1];
2402 $relname =~ s:^/+::;
2403 $source_map{$relname} = $absname;
2408 if ($output_selection == OUTPUT_EXPORTED ||
2409 $output_selection == OUTPUT_INTERNAL) {
2411 push(@export_file_list, @ARGV);
2413 foreach (@export_file_list) {
2415 process_export_file($_);
2423 if ($verbose && $errors) {
2424 print STDERR "$errors errors\n";
2426 if ($verbose && $warnings) {
2427 print STDERR "$warnings warnings\n";
2430 if ($Werror && $warnings) {
2431 print STDERR "$warnings warnings as Errors\n";
2434 exit($output_mode eq "none" ? 0 : $errors)