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