scripts/kernel-doc

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