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) 2005-2012  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 $output_preformatted = 0;
 234 my $no_doc_sections = 0;
 235 my %highlights = %highlights_man;
 236 my $blankline = $blankline_man;
 237 my $modulename = "Kernel API";
 238 my $function_only = 0;
 239 my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
 240                 'July', 'August', 'September', 'October',
 241                 'November', 'December')[(localtime)[4]] .
 242   " " . ((localtime)[5]+1900);
 243
 244 # Essentially these are globals.
 245 # They probably want to be tidied up, made more localised or something.
 246 # CAVEAT EMPTOR!  Some of the others I localised may not want to be, which
 247 # could cause "use of undefined value" or other bugs.
 248 my ($function, %function_table, %parametertypes, $declaration_purpose);
 249 my ($type, $declaration_name, $return_type);
 250 my ($newsection, $newcontents, $prototype, $brcount, %source_map);
 251
 252 if (defined($ENV{'KBUILD_VERBOSE'})) {
 253         $verbose = "$ENV{'KBUILD_VERBOSE'}";
 254 }
 255
 256 # Generated docbook code is inserted in a template at a point where
 257 # docbook v3.1 requires a non-zero sequence of RefEntry's; see:
 258 # http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
 259 # We keep track of number of generated entries and generate a dummy
 260 # if needs be to ensure the expanded template can be postprocessed
 261 # into html.
 262 my $section_counter = 0;
 263
 264 my $lineprefix="";
 265
 266 # states
 267 # 0 - normal code
 268 # 1 - looking for function name
 269 # 2 - scanning field start.
 270 # 3 - scanning prototype.
 271 # 4 - documentation block
 272 my $state;
 273 my $in_doc_sect;
 274
 275 #declaration types: can be
 276 # 'function', 'struct', 'union', 'enum', 'typedef'
 277 my $decl_type;
 278
 279 my $doc_special = "\@\%\$\&";
 280
 281 my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
 282 my $doc_end = '\*/';
 283 my $doc_com = '\s*\*\s*';
 284 my $doc_com_body = '\s*\* ?';
 285 my $doc_decl = $doc_com . '(\w+)';
 286 my $doc_sect = $doc_com . '([' . $doc_special . ']?[\w\s]+):(.*)';
 287 my $doc_content = $doc_com_body . '(.*)';
 288 my $doc_block = $doc_com . 'DOC:\s*(.*)?';
 289
 290 my %constants;
 291 my %parameterdescs;
 292 my @parameterlist;
 293 my %sections;
 294 my @sectionlist;
 295 my $sectcheck;
 296 my $struct_actual;
 297
 298 my $contents = "";
 299 my $section_default = "Description";    # default section
 300 my $section_intro = "Introduction";
 301 my $section = $section_default;
 302 my $section_context = "Context";
 303
 304 my $undescribed = "-- undescribed --";
 305
 306 reset_state();
 307
 308 while ($ARGV[0] =~ m/^-(.*)/) {
 309     my $cmd = shift @ARGV;
 310     if ($cmd eq "-html") {
 311         $output_mode = "html";
 312         %highlights = %highlights_html;
 313         $blankline = $blankline_html;
 314     } elsif ($cmd eq "-man") {
 315         $output_mode = "man";
 316         %highlights = %highlights_man;
 317         $blankline = $blankline_man;
 318     } elsif ($cmd eq "-text") {
 319         $output_mode = "text";
 320         %highlights = %highlights_text;
 321         $blankline = $blankline_text;
 322     } elsif ($cmd eq "-docbook") {
 323         $output_mode = "xml";
 324         %highlights = %highlights_xml;
 325         $blankline = $blankline_xml;
 326     } elsif ($cmd eq "-list") {
 327         $output_mode = "list";
 328         %highlights = %highlights_list;
 329         $blankline = $blankline_list;
 330     } elsif ($cmd eq "-gnome") {
 331         $output_mode = "gnome";
 332         %highlights = %highlights_gnome;
 333         $blankline = $blankline_gnome;
 334     } elsif ($cmd eq "-module") { # not needed for XML, inherits from calling document
 335         $modulename = shift @ARGV;
 336     } elsif ($cmd eq "-function") { # to only output specific functions
 337         $function_only = 1;
 338         $function = shift @ARGV;
 339         $function_table{$function} = 1;
 340     } elsif ($cmd eq "-nofunction") { # to only output specific functions
 341         $function_only = 2;
 342         $function = shift @ARGV;
 343         $function_table{$function} = 1;
 344     } elsif ($cmd eq "-v") {
 345         $verbose = 1;
 346     } elsif (($cmd eq "-h") || ($cmd eq "--help")) {
 347         usage();
 348     } elsif ($cmd eq '-no-doc-sections') {
 349             $no_doc_sections = 1;
 350     }
 351 }
 352
 353 # continue execution near EOF;
 354
 355 sub usage {
 356     print "Usage: $0 [ -v ] [ -docbook | -html | -text | -man | -list ]\n";
 357     print "         [ -no-doc-sections ]\n";
 358     print "         [ -function funcname [ -function funcname ...] ]\n";
 359     print "         [ -nofunction funcname [ -nofunction funcname ...] ]\n";
 360     print "         c source file(s) > outputfile\n";
 361     print "         -v : verbose output, more warnings & other info listed\n";
 362     exit 1;
 363 }
 364
 365 # get kernel version from env
 366 sub get_kernel_version() {
 367     my $version = 'unknown kernel version';
 368
 369     if (defined($ENV{'KERNELVERSION'})) {
 370         $version = $ENV{'KERNELVERSION'};
 371     }
 372     return $version;
 373 }
 374
 375 ##
 376 # dumps section contents to arrays/hashes intended for that purpose.
 377 #
 378 sub dump_section {
 379     my $file = shift;
 380     my $name = shift;
 381     my $contents = join "\n", @_;
 382
 383     if ($name =~ m/$type_constant/) {
 384         $name = $1;
 385 #       print STDERR "constant section '$1' = '$contents'\n";
 386         $constants{$name} = $contents;
 387     } elsif ($name =~ m/$type_param/) {
 388 #       print STDERR "parameter def '$1' = '$contents'\n";
 389         $name = $1;
 390         $parameterdescs{$name} = $contents;
 391         $sectcheck = $sectcheck . $name . " ";
 392     } elsif ($name eq "@\.\.\.") {
 393 #       print STDERR "parameter def '...' = '$contents'\n";
 394         $name = "...";
 395         $parameterdescs{$name} = $contents;
 396         $sectcheck = $sectcheck . $name . " ";
 397     } else {
 398 #       print STDERR "other section '$name' = '$contents'\n";
 399         if (defined($sections{$name}) && ($sections{$name} ne "")) {
 400                 print STDERR "Error(${file}:$.): duplicate section name '$name'\n";
 401                 ++$errors;
 402         }
 403         $sections{$name} = $contents;
 404         push @sectionlist, $name;
 405     }
 406 }
 407
 408 ##
 409 # dump DOC: section after checking that it should go out
 410 #
 411 sub dump_doc_section {
 412     my $file = shift;
 413     my $name = shift;
 414     my $contents = join "\n", @_;
 415
 416     if ($no_doc_sections) {
 417         return;
 418     }
 419
 420     if (($function_only == 0) ||
 421         ( $function_only == 1 && defined($function_table{$name})) ||
 422         ( $function_only == 2 && !defined($function_table{$name})))
 423     {
 424         dump_section($file, $name, $contents);
 425         output_blockhead({'sectionlist' => \@sectionlist,
 426                           'sections' => \%sections,
 427                           'module' => $modulename,
 428                           'content-only' => ($function_only != 0), });
 429     }
 430 }
 431
 432 ##
 433 # output function
 434 #
 435 # parameterdescs, a hash.
 436 #  function => "function name"
 437 #  parameterlist => @list of parameters
 438 #  parameterdescs => %parameter descriptions
 439 #  sectionlist => @list of sections
 440 #  sections => %section descriptions
 441 #
 442
 443 sub output_highlight {
 444     my $contents = join "\n",@_;
 445     my $line;
 446
 447 #   DEBUG
 448 #   if (!defined $contents) {
 449 #       use Carp;
 450 #       confess "output_highlight got called with no args?\n";
 451 #   }
 452
 453     if ($output_mode eq "html" || $output_mode eq "xml") {
 454         $contents = local_unescape($contents);
 455         # convert data read & converted thru xml_escape() into &xyz; format:
 456         $contents =~ s/\\\\\\/\&/g;
 457     }
 458 #   print STDERR "contents b4:$contents\n";
 459     eval $dohighlight;
 460     die $@ if $@;
 461 #   print STDERR "contents af:$contents\n";
 462
 463     foreach $line (split "\n", $contents) {
 464         if (! $output_preformatted) {
 465             $line =~ s/^\s*//;
 466         }
 467         if ($line eq ""){
 468             if (! $output_preformatted) {
 469                 print $lineprefix, local_unescape($blankline);
 470             }
 471         } else {
 472             $line =~ s/\\\\\\/\&/g;
 473             if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
 474                 print "\\&$line";
 475             } else {
 476                 print $lineprefix, $line;
 477             }
 478         }
 479         print "\n";
 480     }
 481 }
 482
 483 #output sections in html
 484 sub output_section_html(%) {
 485     my %args = %{$_[0]};
 486     my $section;
 487
 488     foreach $section (@{$args{'sectionlist'}}) {
 489         print "<h3>$section</h3>\n";
 490         print "<blockquote>\n";
 491         output_highlight($args{'sections'}{$section});
 492         print "</blockquote>\n";
 493     }
 494 }
 495
 496 # output enum in html
 497 sub output_enum_html(%) {
 498     my %args = %{$_[0]};
 499     my ($parameter);
 500     my $count;
 501     print "<h2>enum " . $args{'enum'} . "</h2>\n";
 502
 503     print "<b>enum " . $args{'enum'} . "</b> {<br>\n";
 504     $count = 0;
 505     foreach $parameter (@{$args{'parameterlist'}}) {
 506         print " <b>" . $parameter . "</b>";
 507         if ($count != $#{$args{'parameterlist'}}) {
 508             $count++;
 509             print ",\n";
 510         }
 511         print "<br>";
 512     }
 513     print "};<br>\n";
 514
 515     print "<h3>Constants</h3>\n";
 516     print "<dl>\n";
 517     foreach $parameter (@{$args{'parameterlist'}}) {
 518         print "<dt><b>" . $parameter . "</b>\n";
 519         print "<dd>";
 520         output_highlight($args{'parameterdescs'}{$parameter});
 521     }
 522     print "</dl>\n";
 523     output_section_html(@_);
 524     print "<hr>\n";
 525 }
 526
 527 # output typedef in html
 528 sub output_typedef_html(%) {
 529     my %args = %{$_[0]};
 530     my ($parameter);
 531     my $count;
 532     print "<h2>typedef " . $args{'typedef'} . "</h2>\n";
 533
 534     print "<b>typedef " . $args{'typedef'} . "</b>\n";
 535     output_section_html(@_);
 536     print "<hr>\n";
 537 }
 538
 539 # output struct in html
 540 sub output_struct_html(%) {
 541     my %args = %{$_[0]};
 542     my ($parameter);
 543
 544     print "<h2>" . $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "</h2>\n";
 545     print "<b>" . $args{'type'} . " " . $args{'struct'} . "</b> {<br>\n";
 546     foreach $parameter (@{$args{'parameterlist'}}) {
 547         if ($parameter =~ /^#/) {
 548                 print "$parameter<br>\n";
 549                 next;
 550         }
 551         my $parameter_name = $parameter;
 552         $parameter_name =~ s/\[.*//;
 553
 554         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 555         $type = $args{'parametertypes'}{$parameter};
 556         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 557             # pointer-to-function
 558             print "&nbsp; &nbsp; <i>$1</i><b>$parameter</b>) <i>($2)</i>;<br>\n";
 559         } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
 560             # bitfield
 561             print "&nbsp; &nbsp; <i>$1</i> <b>$parameter</b>$2;<br>\n";
 562         } else {
 563             print "&nbsp; &nbsp; <i>$type</i> <b>$parameter</b>;<br>\n";
 564         }
 565     }
 566     print "};<br>\n";
 567
 568     print "<h3>Members</h3>\n";
 569     print "<dl>\n";
 570     foreach $parameter (@{$args{'parameterlist'}}) {
 571         ($parameter =~ /^#/) && next;
 572
 573         my $parameter_name = $parameter;
 574         $parameter_name =~ s/\[.*//;
 575
 576         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 577         print "<dt><b>" . $parameter . "</b>\n";
 578         print "<dd>";
 579         output_highlight($args{'parameterdescs'}{$parameter_name});
 580     }
 581     print "</dl>\n";
 582     output_section_html(@_);
 583     print "<hr>\n";
 584 }
 585
 586 # output function in html
 587 sub output_function_html(%) {
 588     my %args = %{$_[0]};
 589     my ($parameter, $section);
 590     my $count;
 591
 592     print "<h2>" . $args{'function'} . " - " . $args{'purpose'} . "</h2>\n";
 593     print "<i>" . $args{'functiontype'} . "</i>\n";
 594     print "<b>" . $args{'function'} . "</b>\n";
 595     print "(";
 596     $count = 0;
 597     foreach $parameter (@{$args{'parameterlist'}}) {
 598         $type = $args{'parametertypes'}{$parameter};
 599         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 600             # pointer-to-function
 601             print "<i>$1</i><b>$parameter</b>) <i>($2)</i>";
 602         } else {
 603             print "<i>" . $type . "</i> <b>" . $parameter . "</b>";
 604         }
 605         if ($count != $#{$args{'parameterlist'}}) {
 606             $count++;
 607             print ",\n";
 608         }
 609     }
 610     print ")\n";
 611
 612     print "<h3>Arguments</h3>\n";
 613     print "<dl>\n";
 614     foreach $parameter (@{$args{'parameterlist'}}) {
 615         my $parameter_name = $parameter;
 616         $parameter_name =~ s/\[.*//;
 617
 618         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 619         print "<dt><b>" . $parameter . "</b>\n";
 620         print "<dd>";
 621         output_highlight($args{'parameterdescs'}{$parameter_name});
 622     }
 623     print "</dl>\n";
 624     output_section_html(@_);
 625     print "<hr>\n";
 626 }
 627
 628 # output DOC: block header in html
 629 sub output_blockhead_html(%) {
 630     my %args = %{$_[0]};
 631     my ($parameter, $section);
 632     my $count;
 633
 634     foreach $section (@{$args{'sectionlist'}}) {
 635         print "<h3>$section</h3>\n";
 636         print "<ul>\n";
 637         output_highlight($args{'sections'}{$section});
 638         print "</ul>\n";
 639     }
 640     print "<hr>\n";
 641 }
 642
 643 sub output_section_xml(%) {
 644     my %args = %{$_[0]};
 645     my $section;
 646     # print out each section
 647     $lineprefix="   ";
 648     foreach $section (@{$args{'sectionlist'}}) {
 649         print "<refsect1>\n";
 650         print "<title>$section</title>\n";
 651         if ($section =~ m/EXAMPLE/i) {
 652             print "<informalexample><programlisting>\n";
 653             $output_preformatted = 1;
 654         } else {
 655             print "<para>\n";
 656         }
 657         output_highlight($args{'sections'}{$section});
 658         $output_preformatted = 0;
 659         if ($section =~ m/EXAMPLE/i) {
 660             print "</programlisting></informalexample>\n";
 661         } else {
 662             print "</para>\n";
 663         }
 664         print "</refsect1>\n";
 665     }
 666 }
 667
 668 # output function in XML DocBook
 669 sub output_function_xml(%) {
 670     my %args = %{$_[0]};
 671     my ($parameter, $section);
 672     my $count;
 673     my $id;
 674
 675     $id = "API-" . $args{'function'};
 676     $id =~ s/[^A-Za-z0-9]/-/g;
 677
 678     print "<refentry id=\"$id\">\n";
 679     print "<refentryinfo>\n";
 680     print " <title>LINUX</title>\n";
 681     print " <productname>Kernel Hackers Manual</productname>\n";
 682     print " <date>$man_date</date>\n";
 683     print "</refentryinfo>\n";
 684     print "<refmeta>\n";
 685     print " <refentrytitle><phrase>" . $args{'function'} . "</phrase></refentrytitle>\n";
 686     print " <manvolnum>9</manvolnum>\n";
 687     print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
 688     print "</refmeta>\n";
 689     print "<refnamediv>\n";
 690     print " <refname>" . $args{'function'} . "</refname>\n";
 691     print " <refpurpose>\n";
 692     print "  ";
 693     output_highlight ($args{'purpose'});
 694     print " </refpurpose>\n";
 695     print "</refnamediv>\n";
 696
 697     print "<refsynopsisdiv>\n";
 698     print " <title>Synopsis</title>\n";
 699     print "  <funcsynopsis><funcprototype>\n";
 700     print "   <funcdef>" . $args{'functiontype'} . " ";
 701     print "<function>" . $args{'function'} . " </function></funcdef>\n";
 702
 703     $count = 0;
 704     if ($#{$args{'parameterlist'}} >= 0) {
 705         foreach $parameter (@{$args{'parameterlist'}}) {
 706             $type = $args{'parametertypes'}{$parameter};
 707             if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 708                 # pointer-to-function
 709                 print "   <paramdef>$1<parameter>$parameter</parameter>)\n";
 710                 print "     <funcparams>$2</funcparams></paramdef>\n";
 711             } else {
 712                 print "   <paramdef>" . $type;
 713                 print " <parameter>$parameter</parameter></paramdef>\n";
 714             }
 715         }
 716     } else {
 717         print "  <void/>\n";
 718     }
 719     print "  </funcprototype></funcsynopsis>\n";
 720     print "</refsynopsisdiv>\n";
 721
 722     # print parameters
 723     print "<refsect1>\n <title>Arguments</title>\n";
 724     if ($#{$args{'parameterlist'}} >= 0) {
 725         print " <variablelist>\n";
 726         foreach $parameter (@{$args{'parameterlist'}}) {
 727             my $parameter_name = $parameter;
 728             $parameter_name =~ s/\[.*//;
 729
 730             print "  <varlistentry>\n   <term><parameter>$parameter</parameter></term>\n";
 731             print "   <listitem>\n    <para>\n";
 732             $lineprefix="     ";
 733             output_highlight($args{'parameterdescs'}{$parameter_name});
 734             print "    </para>\n   </listitem>\n  </varlistentry>\n";
 735         }
 736         print " </variablelist>\n";
 737     } else {
 738         print " <para>\n  None\n </para>\n";
 739     }
 740     print "</refsect1>\n";
 741
 742     output_section_xml(@_);
 743     print "</refentry>\n\n";
 744 }
 745
 746 # output struct in XML DocBook
 747 sub output_struct_xml(%) {
 748     my %args = %{$_[0]};
 749     my ($parameter, $section);
 750     my $id;
 751
 752     $id = "API-struct-" . $args{'struct'};
 753     $id =~ s/[^A-Za-z0-9]/-/g;
 754
 755     print "<refentry id=\"$id\">\n";
 756     print "<refentryinfo>\n";
 757     print " <title>LINUX</title>\n";
 758     print " <productname>Kernel Hackers Manual</productname>\n";
 759     print " <date>$man_date</date>\n";
 760     print "</refentryinfo>\n";
 761     print "<refmeta>\n";
 762     print " <refentrytitle><phrase>" . $args{'type'} . " " . $args{'struct'} . "</phrase></refentrytitle>\n";
 763     print " <manvolnum>9</manvolnum>\n";
 764     print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
 765     print "</refmeta>\n";
 766     print "<refnamediv>\n";
 767     print " <refname>" . $args{'type'} . " " . $args{'struct'} . "</refname>\n";
 768     print " <refpurpose>\n";
 769     print "  ";
 770     output_highlight ($args{'purpose'});
 771     print " </refpurpose>\n";
 772     print "</refnamediv>\n";
 773
 774     print "<refsynopsisdiv>\n";
 775     print " <title>Synopsis</title>\n";
 776     print "  <programlisting>\n";
 777     print $args{'type'} . " " . $args{'struct'} . " {\n";
 778     foreach $parameter (@{$args{'parameterlist'}}) {
 779         if ($parameter =~ /^#/) {
 780             my $prm = $parameter;
 781             # convert data read & converted thru xml_escape() into &xyz; format:
 782             # This allows us to have #define macros interspersed in a struct.
 783             $prm =~ s/\\\\\\/\&/g;
 784             print "$prm\n";
 785             next;
 786         }
 787
 788         my $parameter_name = $parameter;
 789         $parameter_name =~ s/\[.*//;
 790
 791         defined($args{'parameterdescs'}{$parameter_name}) || next;
 792         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 793         $type = $args{'parametertypes'}{$parameter};
 794         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 795             # pointer-to-function
 796             print "  $1 $parameter) ($2);\n";
 797         } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
 798             # bitfield
 799             print "  $1 $parameter$2;\n";
 800         } else {
 801             print "  " . $type . " " . $parameter . ";\n";
 802         }
 803     }
 804     print "};";
 805     print "  </programlisting>\n";
 806     print "</refsynopsisdiv>\n";
 807
 808     print " <refsect1>\n";
 809     print "  <title>Members</title>\n";
 810
 811     if ($#{$args{'parameterlist'}} >= 0) {
 812     print "  <variablelist>\n";
 813     foreach $parameter (@{$args{'parameterlist'}}) {
 814       ($parameter =~ /^#/) && next;
 815
 816       my $parameter_name = $parameter;
 817       $parameter_name =~ s/\[.*//;
 818
 819       defined($args{'parameterdescs'}{$parameter_name}) || next;
 820       ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 821       print "    <varlistentry>";
 822       print "      <term>$parameter</term>\n";
 823       print "      <listitem><para>\n";
 824       output_highlight($args{'parameterdescs'}{$parameter_name});
 825       print "      </para></listitem>\n";
 826       print "    </varlistentry>\n";
 827     }
 828     print "  </variablelist>\n";
 829     } else {
 830         print " <para>\n  None\n </para>\n";
 831     }
 832     print " </refsect1>\n";
 833
 834     output_section_xml(@_);
 835
 836     print "</refentry>\n\n";
 837 }
 838
 839 # output enum in XML DocBook
 840 sub output_enum_xml(%) {
 841     my %args = %{$_[0]};
 842     my ($parameter, $section);
 843     my $count;
 844     my $id;
 845
 846     $id = "API-enum-" . $args{'enum'};
 847     $id =~ s/[^A-Za-z0-9]/-/g;
 848
 849     print "<refentry id=\"$id\">\n";
 850     print "<refentryinfo>\n";
 851     print " <title>LINUX</title>\n";
 852     print " <productname>Kernel Hackers Manual</productname>\n";
 853     print " <date>$man_date</date>\n";
 854     print "</refentryinfo>\n";
 855     print "<refmeta>\n";
 856     print " <refentrytitle><phrase>enum " . $args{'enum'} . "</phrase></refentrytitle>\n";
 857     print " <manvolnum>9</manvolnum>\n";
 858     print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
 859     print "</refmeta>\n";
 860     print "<refnamediv>\n";
 861     print " <refname>enum " . $args{'enum'} . "</refname>\n";
 862     print " <refpurpose>\n";
 863     print "  ";
 864     output_highlight ($args{'purpose'});
 865     print " </refpurpose>\n";
 866     print "</refnamediv>\n";
 867
 868     print "<refsynopsisdiv>\n";
 869     print " <title>Synopsis</title>\n";
 870     print "  <programlisting>\n";
 871     print "enum " . $args{'enum'} . " {\n";
 872     $count = 0;
 873     foreach $parameter (@{$args{'parameterlist'}}) {
 874         print "  $parameter";
 875         if ($count != $#{$args{'parameterlist'}}) {
 876             $count++;
 877             print ",";
 878         }
 879         print "\n";
 880     }
 881     print "};";
 882     print "  </programlisting>\n";
 883     print "</refsynopsisdiv>\n";
 884
 885     print "<refsect1>\n";
 886     print " <title>Constants</title>\n";
 887     print "  <variablelist>\n";
 888     foreach $parameter (@{$args{'parameterlist'}}) {
 889       my $parameter_name = $parameter;
 890       $parameter_name =~ s/\[.*//;
 891
 892       print "    <varlistentry>";
 893       print "      <term>$parameter</term>\n";
 894       print "      <listitem><para>\n";
 895       output_highlight($args{'parameterdescs'}{$parameter_name});
 896       print "      </para></listitem>\n";
 897       print "    </varlistentry>\n";
 898     }
 899     print "  </variablelist>\n";
 900     print "</refsect1>\n";
 901
 902     output_section_xml(@_);
 903
 904     print "</refentry>\n\n";
 905 }
 906
 907 # output typedef in XML DocBook
 908 sub output_typedef_xml(%) {
 909     my %args = %{$_[0]};
 910     my ($parameter, $section);
 911     my $id;
 912
 913     $id = "API-typedef-" . $args{'typedef'};
 914     $id =~ s/[^A-Za-z0-9]/-/g;
 915
 916     print "<refentry id=\"$id\">\n";
 917     print "<refentryinfo>\n";
 918     print " <title>LINUX</title>\n";
 919     print " <productname>Kernel Hackers Manual</productname>\n";
 920     print " <date>$man_date</date>\n";
 921     print "</refentryinfo>\n";
 922     print "<refmeta>\n";
 923     print " <refentrytitle><phrase>typedef " . $args{'typedef'} . "</phrase></refentrytitle>\n";
 924     print " <manvolnum>9</manvolnum>\n";
 925     print "</refmeta>\n";
 926     print "<refnamediv>\n";
 927     print " <refname>typedef " . $args{'typedef'} . "</refname>\n";
 928     print " <refpurpose>\n";
 929     print "  ";
 930     output_highlight ($args{'purpose'});
 931     print " </refpurpose>\n";
 932     print "</refnamediv>\n";
 933
 934     print "<refsynopsisdiv>\n";
 935     print " <title>Synopsis</title>\n";
 936     print "  <synopsis>typedef " . $args{'typedef'} . ";</synopsis>\n";
 937     print "</refsynopsisdiv>\n";
 938
 939     output_section_xml(@_);
 940
 941     print "</refentry>\n\n";
 942 }
 943
 944 # output in XML DocBook
 945 sub output_blockhead_xml(%) {
 946     my %args = %{$_[0]};
 947     my ($parameter, $section);
 948     my $count;
 949
 950     my $id = $args{'module'};
 951     $id =~ s/[^A-Za-z0-9]/-/g;
 952
 953     # print out each section
 954     $lineprefix="   ";
 955     foreach $section (@{$args{'sectionlist'}}) {
 956         if (!$args{'content-only'}) {
 957                 print "<refsect1>\n <title>$section</title>\n";
 958         }
 959         if ($section =~ m/EXAMPLE/i) {
 960             print "<example><para>\n";
 961             $output_preformatted = 1;
 962         } else {
 963             print "<para>\n";
 964         }
 965         output_highlight($args{'sections'}{$section});
 966         $output_preformatted = 0;
 967         if ($section =~ m/EXAMPLE/i) {
 968             print "</para></example>\n";
 969         } else {
 970             print "</para>";
 971         }
 972         if (!$args{'content-only'}) {
 973                 print "\n</refsect1>\n";
 974         }
 975     }
 976
 977     print "\n\n";
 978 }
 979
 980 # output in XML DocBook
 981 sub output_function_gnome {
 982     my %args = %{$_[0]};
 983     my ($parameter, $section);
 984     my $count;
 985     my $id;
 986
 987     $id = $args{'module'} . "-" . $args{'function'};
 988     $id =~ s/[^A-Za-z0-9]/-/g;
 989
 990     print "<sect2>\n";
 991     print " <title id=\"$id\">" . $args{'function'} . "</title>\n";
 992
 993     print "  <funcsynopsis>\n";
 994     print "   <funcdef>" . $args{'functiontype'} . " ";
 995     print "<function>" . $args{'function'} . " ";
 996     print "</function></funcdef>\n";
 997
 998     $count = 0;
 999     if ($#{$args{'parameterlist'}} >= 0) {
1000         foreach $parameter (@{$args{'parameterlist'}}) {
1001             $type = $args{'parametertypes'}{$parameter};
1002             if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1003                 # pointer-to-function
1004                 print "   <paramdef>$1 <parameter>$parameter</parameter>)\n";
1005                 print "     <funcparams>$2</funcparams></paramdef>\n";
1006             } else {
1007                 print "   <paramdef>" . $type;
1008                 print " <parameter>$parameter</parameter></paramdef>\n";
1009             }
1010         }
1011     } else {
1012         print "  <void>\n";
1013     }
1014     print "  </funcsynopsis>\n";
1015     if ($#{$args{'parameterlist'}} >= 0) {
1016         print " <informaltable pgwide=\"1\" frame=\"none\" role=\"params\">\n";
1017         print "<tgroup cols=\"2\">\n";
1018         print "<colspec colwidth=\"2*\">\n";
1019         print "<colspec colwidth=\"8*\">\n";
1020         print "<tbody>\n";
1021         foreach $parameter (@{$args{'parameterlist'}}) {
1022             my $parameter_name = $parameter;
1023             $parameter_name =~ s/\[.*//;
1024
1025             print "  <row><entry align=\"right\"><parameter>$parameter</parameter></entry>\n";
1026             print "   <entry>\n";
1027             $lineprefix="     ";
1028             output_highlight($args{'parameterdescs'}{$parameter_name});
1029             print "    </entry></row>\n";
1030         }
1031         print " </tbody></tgroup></informaltable>\n";
1032     } else {
1033         print " <para>\n  None\n </para>\n";
1034     }
1035
1036     # print out each section
1037     $lineprefix="   ";
1038     foreach $section (@{$args{'sectionlist'}}) {
1039         print "<simplesect>\n <title>$section</title>\n";
1040         if ($section =~ m/EXAMPLE/i) {
1041             print "<example><programlisting>\n";
1042             $output_preformatted = 1;
1043         } else {
1044         }
1045         print "<para>\n";
1046         output_highlight($args{'sections'}{$section});
1047         $output_preformatted = 0;
1048         print "</para>\n";
1049         if ($section =~ m/EXAMPLE/i) {
1050             print "</programlisting></example>\n";
1051         } else {
1052         }
1053         print " </simplesect>\n";
1054     }
1055
1056     print "</sect2>\n\n";
1057 }
1058
1059 ##
1060 # output function in man
1061 sub output_function_man(%) {
1062     my %args = %{$_[0]};
1063     my ($parameter, $section);
1064     my $count;
1065
1066     print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
1067
1068     print ".SH NAME\n";
1069     print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
1070
1071     print ".SH SYNOPSIS\n";
1072     if ($args{'functiontype'} ne "") {
1073         print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
1074     } else {
1075         print ".B \"" . $args{'function'} . "\n";
1076     }
1077     $count = 0;
1078     my $parenth = "(";
1079     my $post = ",";
1080     foreach my $parameter (@{$args{'parameterlist'}}) {
1081         if ($count == $#{$args{'parameterlist'}}) {
1082             $post = ");";
1083         }
1084         $type = $args{'parametertypes'}{$parameter};
1085         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1086             # pointer-to-function
1087             print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
1088         } else {
1089             $type =~ s/([^\*])$/$1 /;
1090             print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
1091         }
1092         $count++;
1093         $parenth = "";
1094     }
1095
1096     print ".SH ARGUMENTS\n";
1097     foreach $parameter (@{$args{'parameterlist'}}) {
1098         my $parameter_name = $parameter;
1099         $parameter_name =~ s/\[.*//;
1100
1101         print ".IP \"" . $parameter . "\" 12\n";
1102         output_highlight($args{'parameterdescs'}{$parameter_name});
1103     }
1104     foreach $section (@{$args{'sectionlist'}}) {
1105         print ".SH \"", uc $section, "\"\n";
1106         output_highlight($args{'sections'}{$section});
1107     }
1108 }
1109
1110 ##
1111 # output enum in man
1112 sub output_enum_man(%) {
1113     my %args = %{$_[0]};
1114     my ($parameter, $section);
1115     my $count;
1116
1117     print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
1118
1119     print ".SH NAME\n";
1120     print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
1121
1122     print ".SH SYNOPSIS\n";
1123     print "enum " . $args{'enum'} . " {\n";
1124     $count = 0;
1125     foreach my $parameter (@{$args{'parameterlist'}}) {
1126         print ".br\n.BI \"    $parameter\"\n";
1127         if ($count == $#{$args{'parameterlist'}}) {
1128             print "\n};\n";
1129             last;
1130         }
1131         else {
1132             print ", \n.br\n";
1133         }
1134         $count++;
1135     }
1136
1137     print ".SH Constants\n";
1138     foreach $parameter (@{$args{'parameterlist'}}) {
1139         my $parameter_name = $parameter;
1140         $parameter_name =~ s/\[.*//;
1141
1142         print ".IP \"" . $parameter . "\" 12\n";
1143         output_highlight($args{'parameterdescs'}{$parameter_name});
1144     }
1145     foreach $section (@{$args{'sectionlist'}}) {
1146         print ".SH \"$section\"\n";
1147         output_highlight($args{'sections'}{$section});
1148     }
1149 }
1150
1151 ##
1152 # output struct in man
1153 sub output_struct_man(%) {
1154     my %args = %{$_[0]};
1155     my ($parameter, $section);
1156
1157     print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
1158
1159     print ".SH NAME\n";
1160     print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
1161
1162     print ".SH SYNOPSIS\n";
1163     print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
1164
1165     foreach my $parameter (@{$args{'parameterlist'}}) {
1166         if ($parameter =~ /^#/) {
1167             print ".BI \"$parameter\"\n.br\n";
1168             next;
1169         }
1170         my $parameter_name = $parameter;
1171         $parameter_name =~ s/\[.*//;
1172
1173         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1174         $type = $args{'parametertypes'}{$parameter};
1175         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1176             # pointer-to-function
1177             print ".BI \"    " . $1 . "\" " . $parameter . " \") (" . $2 . ")" . "\"\n;\n";
1178         } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1179             # bitfield
1180             print ".BI \"    " . $1 . "\ \" " . $parameter . $2 . " \"" . "\"\n;\n";
1181         } else {
1182             $type =~ s/([^\*])$/$1 /;
1183             print ".BI \"    " . $type . "\" " . $parameter . " \"" . "\"\n;\n";
1184         }
1185         print "\n.br\n";
1186     }
1187     print "};\n.br\n";
1188
1189     print ".SH Members\n";
1190     foreach $parameter (@{$args{'parameterlist'}}) {
1191         ($parameter =~ /^#/) && next;
1192
1193         my $parameter_name = $parameter;
1194         $parameter_name =~ s/\[.*//;
1195
1196         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1197         print ".IP \"" . $parameter . "\" 12\n";
1198         output_highlight($args{'parameterdescs'}{$parameter_name});
1199     }
1200     foreach $section (@{$args{'sectionlist'}}) {
1201         print ".SH \"$section\"\n";
1202         output_highlight($args{'sections'}{$section});
1203     }
1204 }
1205
1206 ##
1207 # output typedef in man
1208 sub output_typedef_man(%) {
1209     my %args = %{$_[0]};
1210     my ($parameter, $section);
1211
1212     print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
1213
1214     print ".SH NAME\n";
1215     print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
1216
1217     foreach $section (@{$args{'sectionlist'}}) {
1218         print ".SH \"$section\"\n";
1219         output_highlight($args{'sections'}{$section});
1220     }
1221 }
1222
1223 sub output_blockhead_man(%) {
1224     my %args = %{$_[0]};
1225     my ($parameter, $section);
1226     my $count;
1227
1228     print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
1229
1230     foreach $section (@{$args{'sectionlist'}}) {
1231         print ".SH \"$section\"\n";
1232         output_highlight($args{'sections'}{$section});
1233     }
1234 }
1235
1236 ##
1237 # output in text
1238 sub output_function_text(%) {
1239     my %args = %{$_[0]};
1240     my ($parameter, $section);
1241     my $start;
1242
1243     print "Name:\n\n";
1244     print $args{'function'} . " - " . $args{'purpose'} . "\n";
1245
1246     print "\nSynopsis:\n\n";
1247     if ($args{'functiontype'} ne "") {
1248         $start = $args{'functiontype'} . " " . $args{'function'} . " (";
1249     } else {
1250         $start = $args{'function'} . " (";
1251     }
1252     print $start;
1253
1254     my $count = 0;
1255     foreach my $parameter (@{$args{'parameterlist'}}) {
1256         $type = $args{'parametertypes'}{$parameter};
1257         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1258             # pointer-to-function
1259             print $1 . $parameter . ") (" . $2;
1260         } else {
1261             print $type . " " . $parameter;
1262         }
1263         if ($count != $#{$args{'parameterlist'}}) {
1264             $count++;
1265             print ",\n";
1266             print " " x length($start);
1267         } else {
1268             print ");\n\n";
1269         }
1270     }
1271
1272     print "Arguments:\n\n";
1273     foreach $parameter (@{$args{'parameterlist'}}) {
1274         my $parameter_name = $parameter;
1275         $parameter_name =~ s/\[.*//;
1276
1277         print $parameter . "\n\t" . $args{'parameterdescs'}{$parameter_name} . "\n";
1278     }
1279     output_section_text(@_);
1280 }
1281
1282 #output sections in text
1283 sub output_section_text(%) {
1284     my %args = %{$_[0]};
1285     my $section;
1286
1287     print "\n";
1288     foreach $section (@{$args{'sectionlist'}}) {
1289         print "$section:\n\n";
1290         output_highlight($args{'sections'}{$section});
1291     }
1292     print "\n\n";
1293 }
1294
1295 # output enum in text
1296 sub output_enum_text(%) {
1297     my %args = %{$_[0]};
1298     my ($parameter);
1299     my $count;
1300     print "Enum:\n\n";
1301
1302     print "enum " . $args{'enum'} . " - " . $args{'purpose'} . "\n\n";
1303     print "enum " . $args{'enum'} . " {\n";
1304     $count = 0;
1305     foreach $parameter (@{$args{'parameterlist'}}) {
1306         print "\t$parameter";
1307         if ($count != $#{$args{'parameterlist'}}) {
1308             $count++;
1309             print ",";
1310         }
1311         print "\n";
1312     }
1313     print "};\n\n";
1314
1315     print "Constants:\n\n";
1316     foreach $parameter (@{$args{'parameterlist'}}) {
1317         print "$parameter\n\t";
1318         print $args{'parameterdescs'}{$parameter} . "\n";
1319     }
1320
1321     output_section_text(@_);
1322 }
1323
1324 # output typedef in text
1325 sub output_typedef_text(%) {
1326     my %args = %{$_[0]};
1327     my ($parameter);
1328     my $count;
1329     print "Typedef:\n\n";
1330
1331     print "typedef " . $args{'typedef'} . " - " . $args{'purpose'} . "\n";
1332     output_section_text(@_);
1333 }
1334
1335 # output struct as text
1336 sub output_struct_text(%) {
1337     my %args = %{$_[0]};
1338     my ($parameter);
1339
1340     print $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "\n\n";
1341     print $args{'type'} . " " . $args{'struct'} . " {\n";
1342     foreach $parameter (@{$args{'parameterlist'}}) {
1343         if ($parameter =~ /^#/) {
1344             print "$parameter\n";
1345             next;
1346         }
1347
1348         my $parameter_name = $parameter;
1349         $parameter_name =~ s/\[.*//;
1350
1351         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1352         $type = $args{'parametertypes'}{$parameter};
1353         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1354             # pointer-to-function
1355             print "\t$1 $parameter) ($2);\n";
1356         } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1357             # bitfield
1358             print "\t$1 $parameter$2;\n";
1359         } else {
1360             print "\t" . $type . " " . $parameter . ";\n";
1361         }
1362     }
1363     print "};\n\n";
1364
1365     print "Members:\n\n";
1366     foreach $parameter (@{$args{'parameterlist'}}) {
1367         ($parameter =~ /^#/) && next;
1368
1369         my $parameter_name = $parameter;
1370         $parameter_name =~ s/\[.*//;
1371
1372         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1373         print "$parameter\n\t";
1374         print $args{'parameterdescs'}{$parameter_name} . "\n";
1375     }
1376     print "\n";
1377     output_section_text(@_);
1378 }
1379
1380 sub output_blockhead_text(%) {
1381     my %args = %{$_[0]};
1382     my ($parameter, $section);
1383
1384     foreach $section (@{$args{'sectionlist'}}) {
1385         print " $section:\n";
1386         print "    -> ";
1387         output_highlight($args{'sections'}{$section});
1388     }
1389 }
1390
1391 ## list mode output functions
1392
1393 sub output_function_list(%) {
1394     my %args = %{$_[0]};
1395
1396     print $args{'function'} . "\n";
1397 }
1398
1399 # output enum in list
1400 sub output_enum_list(%) {
1401     my %args = %{$_[0]};
1402     print $args{'enum'} . "\n";
1403 }
1404
1405 # output typedef in list
1406 sub output_typedef_list(%) {
1407     my %args = %{$_[0]};
1408     print $args{'typedef'} . "\n";
1409 }
1410
1411 # output struct as list
1412 sub output_struct_list(%) {
1413     my %args = %{$_[0]};
1414
1415     print $args{'struct'} . "\n";
1416 }
1417
1418 sub output_blockhead_list(%) {
1419     my %args = %{$_[0]};
1420     my ($parameter, $section);
1421
1422     foreach $section (@{$args{'sectionlist'}}) {
1423         print "DOC: $section\n";
1424     }
1425 }
1426
1427 ##
1428 # generic output function for all types (function, struct/union, typedef, enum);
1429 # calls the generated, variable output_ function name based on
1430 # functype and output_mode
1431 sub output_declaration {
1432     no strict 'refs';
1433     my $name = shift;
1434     my $functype = shift;
1435     my $func = "output_${functype}_$output_mode";
1436     if (($function_only==0) ||
1437         ( $function_only == 1 && defined($function_table{$name})) ||
1438         ( $function_only == 2 && !defined($function_table{$name})))
1439     {
1440         &$func(@_);
1441         $section_counter++;
1442     }
1443 }
1444
1445 ##
1446 # generic output function - calls the right one based on current output mode.
1447 sub output_blockhead {
1448     no strict 'refs';
1449     my $func = "output_blockhead_" . $output_mode;
1450     &$func(@_);
1451     $section_counter++;
1452 }
1453
1454 ##
1455 # takes a declaration (struct, union, enum, typedef) and
1456 # invokes the right handler. NOT called for functions.
1457 sub dump_declaration($$) {
1458     no strict 'refs';
1459     my ($prototype, $file) = @_;
1460     my $func = "dump_" . $decl_type;
1461     &$func(@_);
1462 }
1463
1464 sub dump_union($$) {
1465     dump_struct(@_);
1466 }
1467
1468 sub dump_struct($$) {
1469     my $x = shift;
1470     my $file = shift;
1471     my $nested;
1472
1473     if ($x =~ /(struct|union)\s+(\w+)\s*{(.*)}/) {
1474         #my $decl_type = $1;
1475         $declaration_name = $2;
1476         my $members = $3;
1477
1478         # ignore embedded structs or unions
1479         $members =~ s/({.*})//g;
1480         $nested = $1;
1481
1482         # ignore members marked private:
1483         $members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gos;
1484         $members =~ s/\/\*\s*private:.*//gos;
1485         # strip comments:
1486         $members =~ s/\/\*.*?\*\///gos;
1487         $nested =~ s/\/\*.*?\*\///gos;
1488         # strip kmemcheck_bitfield_{begin,end}.*;
1489         $members =~ s/kmemcheck_bitfield_.*?;//gos;
1490         # strip attributes
1491         $members =~ s/__aligned\s*\(\d+\)//gos;
1492
1493         create_parameterlist($members, ';', $file);
1494         check_sections($file, $declaration_name, "struct", $sectcheck, $struct_actual, $nested);
1495
1496         output_declaration($declaration_name,
1497                            'struct',
1498                            {'struct' => $declaration_name,
1499                             'module' => $modulename,
1500                             'parameterlist' => \@parameterlist,
1501                             'parameterdescs' => \%parameterdescs,
1502                             'parametertypes' => \%parametertypes,
1503                             'sectionlist' => \@sectionlist,
1504                             'sections' => \%sections,
1505                             'purpose' => $declaration_purpose,
1506                             'type' => $decl_type
1507                            });
1508     }
1509     else {
1510         print STDERR "Error(${file}:$.): Cannot parse struct or union!\n";
1511         ++$errors;
1512     }
1513 }
1514
1515 sub dump_enum($$) {
1516     my $x = shift;
1517     my $file = shift;
1518
1519     $x =~ s@/\*.*?\*/@@gos;     # strip comments.
1520     $x =~ s/^#\s*define\s+.*$//; # strip #define macros inside enums
1521
1522     if ($x =~ /enum\s+(\w+)\s*{(.*)}/) {
1523         $declaration_name = $1;
1524         my $members = $2;
1525
1526         foreach my $arg (split ',', $members) {
1527             $arg =~ s/^\s*(\w+).*/$1/;
1528             push @parameterlist, $arg;
1529             if (!$parameterdescs{$arg}) {
1530                 $parameterdescs{$arg} = $undescribed;
1531                 print STDERR "Warning(${file}:$.): Enum value '$arg' ".
1532                     "not described in enum '$declaration_name'\n";
1533             }
1534
1535         }
1536
1537         output_declaration($declaration_name,
1538                            'enum',
1539                            {'enum' => $declaration_name,
1540                             'module' => $modulename,
1541                             'parameterlist' => \@parameterlist,
1542                             'parameterdescs' => \%parameterdescs,
1543                             'sectionlist' => \@sectionlist,
1544                             'sections' => \%sections,
1545                             'purpose' => $declaration_purpose
1546                            });
1547     }
1548     else {
1549         print STDERR "Error(${file}:$.): Cannot parse enum!\n";
1550         ++$errors;
1551     }
1552 }
1553
1554 sub dump_typedef($$) {
1555     my $x = shift;
1556     my $file = shift;
1557
1558     $x =~ s@/\*.*?\*/@@gos;     # strip comments.
1559     while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
1560         $x =~ s/\(*.\)\s*;$/;/;
1561         $x =~ s/\[*.\]\s*;$/;/;
1562     }
1563
1564     if ($x =~ /typedef.*\s+(\w+)\s*;/) {
1565         $declaration_name = $1;
1566
1567         output_declaration($declaration_name,
1568                            'typedef',
1569                            {'typedef' => $declaration_name,
1570                             'module' => $modulename,
1571                             'sectionlist' => \@sectionlist,
1572                             'sections' => \%sections,
1573                             'purpose' => $declaration_purpose
1574                            });
1575     }
1576     else {
1577         print STDERR "Error(${file}:$.): Cannot parse typedef!\n";
1578         ++$errors;
1579     }
1580 }
1581
1582 sub save_struct_actual($) {
1583     my $actual = shift;
1584
1585     # strip all spaces from the actual param so that it looks like one string item
1586     $actual =~ s/\s*//g;
1587     $struct_actual = $struct_actual . $actual . " ";
1588 }
1589
1590 sub create_parameterlist($$$) {
1591     my $args = shift;
1592     my $splitter = shift;
1593     my $file = shift;
1594     my $type;
1595     my $param;
1596
1597     # temporarily replace commas inside function pointer definition
1598     while ($args =~ /(\([^\),]+),/) {
1599         $args =~ s/(\([^\),]+),/$1#/g;
1600     }
1601
1602     foreach my $arg (split($splitter, $args)) {
1603         # strip comments
1604         $arg =~ s/\/\*.*\*\///;
1605         # strip leading/trailing spaces
1606         $arg =~ s/^\s*//;
1607         $arg =~ s/\s*$//;
1608         $arg =~ s/\s+/ /;
1609
1610         if ($arg =~ /^#/) {
1611             # Treat preprocessor directive as a typeless variable just to fill
1612             # corresponding data structures "correctly". Catch it later in
1613             # output_* subs.
1614             push_parameter($arg, "", $file);
1615         } elsif ($arg =~ m/\(.+\)\s*\(/) {
1616             # pointer-to-function
1617             $arg =~ tr/#/,/;
1618             $arg =~ m/[^\(]+\(\*?\s*(\w*)\s*\)/;
1619             $param = $1;
1620             $type = $arg;
1621             $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
1622             save_struct_actual($param);
1623             push_parameter($param, $type, $file);
1624         } elsif ($arg) {
1625             $arg =~ s/\s*:\s*/:/g;
1626             $arg =~ s/\s*\[/\[/g;
1627
1628             my @args = split('\s*,\s*', $arg);
1629             if ($args[0] =~ m/\*/) {
1630                 $args[0] =~ s/(\*+)\s*/ $1/;
1631             }
1632
1633             my @first_arg;
1634             if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
1635                     shift @args;
1636                     push(@first_arg, split('\s+', $1));
1637                     push(@first_arg, $2);
1638             } else {
1639                     @first_arg = split('\s+', shift @args);
1640             }
1641
1642             unshift(@args, pop @first_arg);
1643             $type = join " ", @first_arg;
1644
1645             foreach $param (@args) {
1646                 if ($param =~ m/^(\*+)\s*(.*)/) {
1647                     save_struct_actual($2);
1648                     push_parameter($2, "$type $1", $file);
1649                 }
1650                 elsif ($param =~ m/(.*?):(\d+)/) {
1651                     if ($type ne "") { # skip unnamed bit-fields
1652                         save_struct_actual($1);
1653                         push_parameter($1, "$type:$2", $file)
1654                     }
1655                 }
1656                 else {
1657                     save_struct_actual($param);
1658                     push_parameter($param, $type, $file);
1659                 }
1660             }
1661         }
1662     }
1663 }
1664
1665 sub push_parameter($$$) {
1666         my $param = shift;
1667         my $type = shift;
1668         my $file = shift;
1669
1670         if (($anon_struct_union == 1) && ($type eq "") &&
1671             ($param eq "}")) {
1672                 return;         # ignore the ending }; from anon. struct/union
1673         }
1674
1675         $anon_struct_union = 0;
1676         my $param_name = $param;
1677         $param_name =~ s/\[.*//;
1678
1679         if ($type eq "" && $param =~ /\.\.\.$/)
1680         {
1681             if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
1682                 $parameterdescs{$param} = "variable arguments";
1683             }
1684         }
1685         elsif ($type eq "" && ($param eq "" or $param eq "void"))
1686         {
1687             $param="void";
1688             $parameterdescs{void} = "no arguments";
1689         }
1690         elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
1691         # handle unnamed (anonymous) union or struct:
1692         {
1693                 $type = $param;
1694                 $param = "{unnamed_" . $param . "}";
1695                 $parameterdescs{$param} = "anonymous\n";
1696                 $anon_struct_union = 1;
1697         }
1698
1699         # warn if parameter has no description
1700         # (but ignore ones starting with # as these are not parameters
1701         # but inline preprocessor statements);
1702         # also ignore unnamed structs/unions;
1703         if (!$anon_struct_union) {
1704         if (!defined $parameterdescs{$param_name} && $param_name !~ /^#/) {
1705
1706             $parameterdescs{$param_name} = $undescribed;
1707
1708             if (($type eq 'function') || ($type eq 'enum')) {
1709                 print STDERR "Warning(${file}:$.): Function parameter ".
1710                     "or member '$param' not " .
1711                     "described in '$declaration_name'\n";
1712             }
1713             print STDERR "Warning(${file}:$.):" .
1714                          " No description found for parameter '$param'\n";
1715             ++$warnings;
1716         }
1717         }
1718
1719         $param = xml_escape($param);
1720
1721         # strip spaces from $param so that it is one continuous string
1722         # on @parameterlist;
1723         # this fixes a problem where check_sections() cannot find
1724         # a parameter like "addr[6 + 2]" because it actually appears
1725         # as "addr[6", "+", "2]" on the parameter list;
1726         # but it's better to maintain the param string unchanged for output,
1727         # so just weaken the string compare in check_sections() to ignore
1728         # "[blah" in a parameter string;
1729         ###$param =~ s/\s*//g;
1730         push @parameterlist, $param;
1731         $parametertypes{$param} = $type;
1732 }
1733
1734 sub check_sections($$$$$$) {
1735         my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck, $nested) = @_;
1736         my @sects = split ' ', $sectcheck;
1737         my @prms = split ' ', $prmscheck;
1738         my $err;
1739         my ($px, $sx);
1740         my $prm_clean;          # strip trailing "[array size]" and/or beginning "*"
1741
1742         foreach $sx (0 .. $#sects) {
1743                 $err = 1;
1744                 foreach $px (0 .. $#prms) {
1745                         $prm_clean = $prms[$px];
1746                         $prm_clean =~ s/\[.*\]//;
1747                         $prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
1748                         # ignore array size in a parameter string;
1749                         # however, the original param string may contain
1750                         # spaces, e.g.:  addr[6 + 2]
1751                         # and this appears in @prms as "addr[6" since the
1752                         # parameter list is split at spaces;
1753                         # hence just ignore "[..." for the sections check;
1754                         $prm_clean =~ s/\[.*//;
1755
1756                         ##$prm_clean =~ s/^\**//;
1757                         if ($prm_clean eq $sects[$sx]) {
1758                                 $err = 0;
1759                                 last;
1760                         }
1761                 }
1762                 if ($err) {
1763                         if ($decl_type eq "function") {
1764                                 print STDERR "Warning(${file}:$.): " .
1765                                         "Excess function parameter " .
1766                                         "'$sects[$sx]' " .
1767                                         "description in '$decl_name'\n";
1768                                 ++$warnings;
1769                         } else {
1770                                 if ($nested !~ m/\Q$sects[$sx]\E/) {
1771                                     print STDERR "Warning(${file}:$.): " .
1772                                         "Excess struct/union/enum/typedef member " .
1773                                         "'$sects[$sx]' " .
1774                                         "description in '$decl_name'\n";
1775                                     ++$warnings;
1776                                 }
1777                         }
1778                 }
1779         }
1780 }
1781
1782 ##
1783 # takes a function prototype and the name of the current file being
1784 # processed and spits out all the details stored in the global
1785 # arrays/hashes.
1786 sub dump_function($$) {
1787     my $prototype = shift;
1788     my $file = shift;
1789
1790     $prototype =~ s/^static +//;
1791     $prototype =~ s/^extern +//;
1792     $prototype =~ s/^asmlinkage +//;
1793     $prototype =~ s/^inline +//;
1794     $prototype =~ s/^__inline__ +//;
1795     $prototype =~ s/^__inline +//;
1796     $prototype =~ s/^__always_inline +//;
1797     $prototype =~ s/^noinline +//;
1798     $prototype =~ s/__devinit +//;
1799     $prototype =~ s/__init +//;
1800     $prototype =~ s/__init_or_module +//;
1801     $prototype =~ s/__must_check +//;
1802     $prototype =~ s/__weak +//;
1803     $prototype =~ s/^#\s*define\s+//; #ak added
1804     $prototype =~ s/__attribute__\s*\(\([a-z,]*\)\)//;
1805
1806     # Yes, this truly is vile.  We are looking for:
1807     # 1. Return type (may be nothing if we're looking at a macro)
1808     # 2. Function name
1809     # 3. Function parameters.
1810     #
1811     # All the while we have to watch out for function pointer parameters
1812     # (which IIRC is what the two sections are for), C types (these
1813     # regexps don't even start to express all the possibilities), and
1814     # so on.
1815     #
1816     # If you mess with these regexps, it's a good idea to check that
1817     # the following functions' documentation still comes out right:
1818     # - parport_register_device (function pointer parameters)
1819     # - atomic_set (macro)
1820     # - pci_match_device, __copy_to_user (long return type)
1821
1822     if ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1823         $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1824         $prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1825         $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1826         $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1827         $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1828         $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1829         $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1830         $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1831         $prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1832         $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1833         $prototype =~ m/^(\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1834         $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1835         $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1836         $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1837         $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1838         $prototype =~ m/^(\w+\s+\w+\s*\*\s*\w+\s*\*\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/)  {
1839         $return_type = $1;
1840         $declaration_name = $2;
1841         my $args = $3;
1842
1843         create_parameterlist($args, ',', $file);
1844     } else {
1845         print STDERR "Error(${file}:$.): cannot understand prototype: '$prototype'\n";
1846         ++$errors;
1847         return;
1848     }
1849
1850         my $prms = join " ", @parameterlist;
1851         check_sections($file, $declaration_name, "function", $sectcheck, $prms, "");
1852
1853     output_declaration($declaration_name,
1854                        'function',
1855                        {'function' => $declaration_name,
1856                         'module' => $modulename,
1857                         'functiontype' => $return_type,
1858                         'parameterlist' => \@parameterlist,
1859                         'parameterdescs' => \%parameterdescs,
1860                         'parametertypes' => \%parametertypes,
1861                         'sectionlist' => \@sectionlist,
1862                         'sections' => \%sections,
1863                         'purpose' => $declaration_purpose
1864                        });
1865 }
1866
1867 sub reset_state {
1868     $function = "";
1869     %constants = ();
1870     %parameterdescs = ();
1871     %parametertypes = ();
1872     @parameterlist = ();
1873     %sections = ();
1874     @sectionlist = ();
1875     $sectcheck = "";
1876     $struct_actual = "";
1877     $prototype = "";
1878
1879     $state = 0;
1880 }
1881
1882 sub tracepoint_munge($) {
1883         my $file = shift;
1884         my $tracepointname = 0;
1885         my $tracepointargs = 0;
1886
1887         if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
1888                 $tracepointname = $1;
1889         }
1890         if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
1891                 $tracepointname = $1;
1892         }
1893         if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
1894                 $tracepointname = $2;
1895         }
1896         $tracepointname =~ s/^\s+//; #strip leading whitespace
1897         if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
1898                 $tracepointargs = $1;
1899         }
1900         if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
1901                 print STDERR "Warning(${file}:$.): Unrecognized tracepoint format: \n".
1902                              "$prototype\n";
1903         } else {
1904                 $prototype = "static inline void trace_$tracepointname($tracepointargs)";
1905         }
1906 }
1907
1908 sub syscall_munge() {
1909         my $void = 0;
1910
1911         $prototype =~ s@[\r\n\t]+@ @gos; # strip newlines/CR's/tabs
1912 ##      if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
1913         if ($prototype =~ m/SYSCALL_DEFINE0/) {
1914                 $void = 1;
1915 ##              $prototype = "long sys_$1(void)";
1916         }
1917
1918         $prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
1919         if ($prototype =~ m/long (sys_.*?),/) {
1920                 $prototype =~ s/,/\(/;
1921         } elsif ($void) {
1922                 $prototype =~ s/\)/\(void\)/;
1923         }
1924
1925         # now delete all of the odd-number commas in $prototype
1926         # so that arg types & arg names don't have a comma between them
1927         my $count = 0;
1928         my $len = length($prototype);
1929         if ($void) {
1930                 $len = 0;       # skip the for-loop
1931         }
1932         for (my $ix = 0; $ix < $len; $ix++) {
1933                 if (substr($prototype, $ix, 1) eq ',') {
1934                         $count++;
1935                         if ($count % 2 == 1) {
1936                                 substr($prototype, $ix, 1) = ' ';
1937                         }
1938                 }
1939         }
1940 }
1941
1942 sub process_state3_function($$) {
1943     my $x = shift;
1944     my $file = shift;
1945
1946     $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1947
1948     if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
1949         # do nothing
1950     }
1951     elsif ($x =~ /([^\{]*)/) {
1952         $prototype .= $1;
1953     }
1954
1955     if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
1956         $prototype =~ s@/\*.*?\*/@@gos; # strip comments.
1957         $prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1958         $prototype =~ s@^\s+@@gos; # strip leading spaces
1959         if ($prototype =~ /SYSCALL_DEFINE/) {
1960                 syscall_munge();
1961         }
1962         if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
1963             $prototype =~ /DEFINE_SINGLE_EVENT/)
1964         {
1965                 tracepoint_munge($file);
1966         }
1967         dump_function($prototype, $file);
1968         reset_state();
1969     }
1970 }
1971
1972 sub process_state3_type($$) {
1973     my $x = shift;
1974     my $file = shift;
1975
1976     $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1977     $x =~ s@^\s+@@gos; # strip leading spaces
1978     $x =~ s@\s+$@@gos; # strip trailing spaces
1979     $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1980
1981     if ($x =~ /^#/) {
1982         # To distinguish preprocessor directive from regular declaration later.
1983         $x .= ";";
1984     }
1985
1986     while (1) {
1987         if ( $x =~ /([^{};]*)([{};])(.*)/ ) {
1988             $prototype .= $1 . $2;
1989             ($2 eq '{') && $brcount++;
1990             ($2 eq '}') && $brcount--;
1991             if (($2 eq ';') && ($brcount == 0)) {
1992                 dump_declaration($prototype, $file);
1993                 reset_state();
1994                 last;
1995             }
1996             $x = $3;
1997         } else {
1998             $prototype .= $x;
1999             last;
2000         }
2001     }
2002 }
2003
2004 # xml_escape: replace <, >, and & in the text stream;
2005 #
2006 # however, formatting controls that are generated internally/locally in the
2007 # kernel-doc script are not escaped here; instead, they begin life like
2008 # $blankline_html (4 of '\' followed by a mnemonic + ':'), then these strings
2009 # are converted to their mnemonic-expected output, without the 4 * '\' & ':',
2010 # just before actual output; (this is done by local_unescape())
2011 sub xml_escape($) {
2012         my $text = shift;
2013         if (($output_mode eq "text") || ($output_mode eq "man")) {
2014                 return $text;
2015         }
2016         $text =~ s/\&/\\\\\\amp;/g;
2017         $text =~ s/\</\\\\\\lt;/g;
2018         $text =~ s/\>/\\\\\\gt;/g;
2019         return $text;
2020 }
2021
2022 # convert local escape strings to html
2023 # local escape strings look like:  '\\\\menmonic:' (that's 4 backslashes)
2024 sub local_unescape($) {
2025         my $text = shift;
2026         if (($output_mode eq "text") || ($output_mode eq "man")) {
2027                 return $text;
2028         }
2029         $text =~ s/\\\\\\\\lt:/</g;
2030         $text =~ s/\\\\\\\\gt:/>/g;
2031         return $text;
2032 }
2033
2034 sub process_file($) {
2035     my $file;
2036     my $identifier;
2037     my $func;
2038     my $descr;
2039     my $in_purpose = 0;
2040     my $initial_section_counter = $section_counter;
2041
2042     if (defined($ENV{'SRCTREE'})) {
2043         $file = "$ENV{'SRCTREE'}" . "/" . "@_";
2044     }
2045     else {
2046         $file = "@_";
2047     }
2048     if (defined($source_map{$file})) {
2049         $file = $source_map{$file};
2050     }
2051
2052     if (!open(IN,"<$file")) {
2053         print STDERR "Error: Cannot open file $file\n";
2054         ++$errors;
2055         return;
2056     }
2057
2058     $. = 1;
2059
2060     $section_counter = 0;
2061     while (<IN>) {
2062         while (s/\\\s*$//) {
2063             $_ .= <IN>;
2064         }
2065         if ($state == 0) {
2066             if (/$doc_start/o) {
2067                 $state = 1;             # next line is always the function name
2068                 $in_doc_sect = 0;
2069             }
2070         } elsif ($state == 1) { # this line is the function name (always)
2071             if (/$doc_block/o) {
2072                 $state = 4;
2073                 $contents = "";
2074                 if ( $1 eq "" ) {
2075                         $section = $section_intro;
2076                 } else {
2077                         $section = $1;
2078                 }
2079             }
2080             elsif (/$doc_decl/o) {
2081                 $identifier = $1;
2082                 if (/\s*([\w\s]+?)\s*-/) {
2083                     $identifier = $1;
2084                 }
2085
2086                 $state = 2;
2087                 if (/-(.*)/) {
2088                     # strip leading/trailing/multiple spaces
2089                     $descr= $1;
2090                     $descr =~ s/^\s*//;
2091                     $descr =~ s/\s*$//;
2092                     $descr =~ s/\s+/ /g;
2093                     $declaration_purpose = xml_escape($descr);
2094                     $in_purpose = 1;
2095                 } else {
2096                     $declaration_purpose = "";
2097                 }
2098
2099                 if (($declaration_purpose eq "") && $verbose) {
2100                         print STDERR "Warning(${file}:$.): missing initial short description on line:\n";
2101                         print STDERR $_;
2102                         ++$warnings;
2103                 }
2104
2105                 if ($identifier =~ m/^struct/) {
2106                     $decl_type = 'struct';
2107                 } elsif ($identifier =~ m/^union/) {
2108                     $decl_type = 'union';
2109                 } elsif ($identifier =~ m/^enum/) {
2110                     $decl_type = 'enum';
2111                 } elsif ($identifier =~ m/^typedef/) {
2112                     $decl_type = 'typedef';
2113                 } else {
2114                     $decl_type = 'function';
2115                 }
2116
2117                 if ($verbose) {
2118                     print STDERR "Info(${file}:$.): Scanning doc for $identifier\n";
2119                 }
2120             } else {
2121                 print STDERR "Warning(${file}:$.): Cannot understand $_ on line $.",
2122                 " - I thought it was a doc line\n";
2123                 ++$warnings;
2124                 $state = 0;
2125             }
2126         } elsif ($state == 2) { # look for head: lines, and include content
2127             if (/$doc_sect/o) {
2128                 $newsection = $1;
2129                 $newcontents = $2;
2130
2131                 if (($contents ne "") && ($contents ne "\n")) {
2132                     if (!$in_doc_sect && $verbose) {
2133                         print STDERR "Warning(${file}:$.): contents before sections\n";
2134                         ++$warnings;
2135                     }
2136                     dump_section($file, $section, xml_escape($contents));
2137                     $section = $section_default;
2138                 }
2139
2140                 $in_doc_sect = 1;
2141                 $in_purpose = 0;
2142                 $contents = $newcontents;
2143                 if ($contents ne "") {
2144                     while ((substr($contents, 0, 1) eq " ") ||
2145                         substr($contents, 0, 1) eq "\t") {
2146                             $contents = substr($contents, 1);
2147                     }
2148                     $contents .= "\n";
2149                 }
2150                 $section = $newsection;
2151             } elsif (/$doc_end/) {
2152
2153                 if (($contents ne "") && ($contents ne "\n")) {
2154                     dump_section($file, $section, xml_escape($contents));
2155                     $section = $section_default;
2156                     $contents = "";
2157                 }
2158                 # look for doc_com + <text> + doc_end:
2159                 if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
2160                     print STDERR "Warning(${file}:$.): suspicious ending line: $_";
2161                     ++$warnings;
2162                 }
2163
2164                 $prototype = "";
2165                 $state = 3;
2166                 $brcount = 0;
2167 #               print STDERR "end of doc comment, looking for prototype\n";
2168             } elsif (/$doc_content/) {
2169                 # miguel-style comment kludge, look for blank lines after
2170                 # @parameter line to signify start of description
2171                 if ($1 eq "") {
2172                     if ($section =~ m/^@/ || $section eq $section_context) {
2173                         dump_section($file, $section, xml_escape($contents));
2174                         $section = $section_default;
2175                         $contents = "";
2176                     } else {
2177                         $contents .= "\n";
2178                     }
2179                     $in_purpose = 0;
2180                 } elsif ($in_purpose == 1) {
2181                     # Continued declaration purpose
2182                     chomp($declaration_purpose);
2183                     $declaration_purpose .= " " . xml_escape($1);
2184                     $declaration_purpose =~ s/\s+/ /g;
2185                 } else {
2186                     $contents .= $1 . "\n";
2187                 }
2188             } else {
2189                 # i dont know - bad line?  ignore.
2190                 print STDERR "Warning(${file}:$.): bad line: $_";
2191                 ++$warnings;
2192             }
2193         } elsif ($state == 3) { # scanning for function '{' (end of prototype)
2194             if ($decl_type eq 'function') {
2195                 process_state3_function($_, $file);
2196             } else {
2197                 process_state3_type($_, $file);
2198             }
2199         } elsif ($state == 4) {
2200                 # Documentation block
2201                 if (/$doc_block/) {
2202                         dump_doc_section($file, $section, xml_escape($contents));
2203                         $contents = "";
2204                         $function = "";
2205                         %constants = ();
2206                         %parameterdescs = ();
2207                         %parametertypes = ();
2208                         @parameterlist = ();
2209                         %sections = ();
2210                         @sectionlist = ();
2211                         $prototype = "";
2212                         if ( $1 eq "" ) {
2213                                 $section = $section_intro;
2214                         } else {
2215                                 $section = $1;
2216                         }
2217                 }
2218                 elsif (/$doc_end/)
2219                 {
2220                         dump_doc_section($file, $section, xml_escape($contents));
2221                         $contents = "";
2222                         $function = "";
2223                         %constants = ();
2224                         %parameterdescs = ();
2225                         %parametertypes = ();
2226                         @parameterlist = ();
2227                         %sections = ();
2228                         @sectionlist = ();
2229                         $prototype = "";
2230                         $state = 0;
2231                 }
2232                 elsif (/$doc_content/)
2233                 {
2234                         if ( $1 eq "" )
2235                         {
2236                                 $contents .= $blankline;
2237                         }
2238                         else
2239                         {
2240                                 $contents .= $1 . "\n";
2241                         }
2242                 }
2243         }
2244     }
2245     if ($initial_section_counter == $section_counter) {
2246         print STDERR "Warning(${file}): no structured comments found\n";
2247         if ($output_mode eq "xml") {
2248             # The template wants at least one RefEntry here; make one.
2249             print "<refentry>\n";
2250             print " <refnamediv>\n";
2251             print "  <refname>\n";
2252             print "   ${file}\n";
2253             print "  </refname>\n";
2254             print "  <refpurpose>\n";
2255             print "   Document generation inconsistency\n";
2256             print "  </refpurpose>\n";
2257             print " </refnamediv>\n";
2258             print " <refsect1>\n";
2259             print "  <title>\n";
2260             print "   Oops\n";
2261             print "  </title>\n";
2262             print "  <warning>\n";
2263             print "   <para>\n";
2264             print "    The template for this document tried to insert\n";
2265             print "    the structured comment from the file\n";
2266             print "    <filename>${file}</filename> at this point,\n";
2267             print "    but none was found.\n";
2268             print "    This dummy section is inserted to allow\n";
2269             print "    generation to continue.\n";
2270             print "   </para>\n";
2271             print "  </warning>\n";
2272             print " </refsect1>\n";
2273             print "</refentry>\n";
2274         }
2275     }
2276 }
2277
2278
2279 $kernelversion = get_kernel_version();
2280
2281 # generate a sequence of code that will splice in highlighting information
2282 # using the s// operator.
2283 foreach my $pattern (keys %highlights) {
2284 #   print STDERR "scanning pattern:$pattern, highlight:($highlights{$pattern})\n";
2285     $dohighlight .=  "\$contents =~ s:$pattern:$highlights{$pattern}:gs;\n";
2286 }
2287
2288 # Read the file that maps relative names to absolute names for
2289 # separate source and object directories and for shadow trees.
2290 if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
2291         my ($relname, $absname);
2292         while(<SOURCE_MAP>) {
2293                 chop();
2294                 ($relname, $absname) = (split())[0..1];
2295                 $relname =~ s:^/+::;
2296                 $source_map{$relname} = $absname;
2297         }
2298         close(SOURCE_MAP);
2299 }
2300
2301 foreach (@ARGV) {
2302     chomp;
2303     process_file($_);
2304 }
2305 if ($verbose && $errors) {
2306   print STDERR "$errors errors\n";
2307 }
2308 if ($verbose && $warnings) {
2309   print STDERR "$warnings warnings\n";
2310 }
2311
2312 exit($errors);