xref: /openbmc/qemu/scripts/kernel-doc (revision 65fb67bf73603a218aa1d39286a452058364f253)
1e2c54635SPaolo Bonzini#!/usr/bin/env perl
2e2c54635SPaolo Bonzini# SPDX-License-Identifier: GPL-2.0
3e2c54635SPaolo Bonzini
4e2c54635SPaolo Bonziniuse warnings;
5e2c54635SPaolo Bonziniuse strict;
6e2c54635SPaolo Bonzini
7e2c54635SPaolo Bonzini## Copyright (c) 1998 Michael Zucchi, All Rights Reserved        ##
8e2c54635SPaolo Bonzini## Copyright (C) 2000, 1  Tim Waugh <twaugh@redhat.com>          ##
9e2c54635SPaolo Bonzini## Copyright (C) 2001  Simon Huggins                             ##
10e2c54635SPaolo Bonzini## Copyright (C) 2005-2012  Randy Dunlap                         ##
11e2c54635SPaolo Bonzini## Copyright (C) 2012  Dan Luedtke                               ##
12e2c54635SPaolo Bonzini## 								 ##
13e2c54635SPaolo Bonzini## #define enhancements by Armin Kuster <akuster@mvista.com>	 ##
14e2c54635SPaolo Bonzini## Copyright (c) 2000 MontaVista Software, Inc.			 ##
15e2c54635SPaolo Bonzini## 								 ##
16e2c54635SPaolo Bonzini## This software falls under the GNU General Public License.     ##
17e2c54635SPaolo Bonzini## Please read the COPYING file for more information             ##
18e2c54635SPaolo Bonzini
19e2c54635SPaolo Bonzini# 18/01/2001 - 	Cleanups
20e2c54635SPaolo Bonzini# 		Functions prototyped as foo(void) same as foo()
21e2c54635SPaolo Bonzini# 		Stop eval'ing where we don't need to.
22e2c54635SPaolo Bonzini# -- huggie@earth.li
23e2c54635SPaolo Bonzini
24e2c54635SPaolo Bonzini# 27/06/2001 -  Allowed whitespace after initial "/**" and
25e2c54635SPaolo Bonzini#               allowed comments before function declarations.
26e2c54635SPaolo Bonzini# -- Christian Kreibich <ck@whoop.org>
27e2c54635SPaolo Bonzini
28e2c54635SPaolo Bonzini# Still to do:
29e2c54635SPaolo Bonzini# 	- add perldoc documentation
30e2c54635SPaolo Bonzini# 	- Look more closely at some of the scarier bits :)
31e2c54635SPaolo Bonzini
32e2c54635SPaolo Bonzini# 26/05/2001 - 	Support for separate source and object trees.
33e2c54635SPaolo Bonzini#		Return error code.
34e2c54635SPaolo Bonzini# 		Keith Owens <kaos@ocs.com.au>
35e2c54635SPaolo Bonzini
36e2c54635SPaolo Bonzini# 23/09/2001 - Added support for typedefs, structs, enums and unions
37e2c54635SPaolo Bonzini#              Support for Context section; can be terminated using empty line
38e2c54635SPaolo Bonzini#              Small fixes (like spaces vs. \s in regex)
39e2c54635SPaolo Bonzini# -- Tim Jansen <tim@tjansen.de>
40e2c54635SPaolo Bonzini
41e2c54635SPaolo Bonzini# 25/07/2012 - Added support for HTML5
42e2c54635SPaolo Bonzini# -- Dan Luedtke <mail@danrl.de>
43e2c54635SPaolo Bonzini
44e2c54635SPaolo Bonzinisub usage {
45e2c54635SPaolo Bonzini    my $message = <<"EOF";
46e2c54635SPaolo BonziniUsage: $0 [OPTION ...] FILE ...
47e2c54635SPaolo Bonzini
48e2c54635SPaolo BonziniRead C language source or header FILEs, extract embedded documentation comments,
49e2c54635SPaolo Bonziniand print formatted documentation to standard output.
50e2c54635SPaolo Bonzini
51e2c54635SPaolo BonziniThe documentation comments are identified by "/**" opening comment mark. See
52e2c54635SPaolo BonziniDocumentation/doc-guide/kernel-doc.rst for the documentation comment syntax.
53e2c54635SPaolo Bonzini
54e2c54635SPaolo BonziniOutput format selection (mutually exclusive):
55e2c54635SPaolo Bonzini  -man			Output troff manual page format. This is the default.
56e2c54635SPaolo Bonzini  -rst			Output reStructuredText format.
57e2c54635SPaolo Bonzini  -none			Do not output documentation, only warnings.
58e2c54635SPaolo Bonzini
59e2c54635SPaolo BonziniOutput selection (mutually exclusive):
60e2c54635SPaolo Bonzini  -export		Only output documentation for symbols that have been
61e2c54635SPaolo Bonzini			exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL()
62e2c54635SPaolo Bonzini                        in any input FILE or -export-file FILE.
63e2c54635SPaolo Bonzini  -internal		Only output documentation for symbols that have NOT been
64e2c54635SPaolo Bonzini			exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL()
65e2c54635SPaolo Bonzini                        in any input FILE or -export-file FILE.
66e2c54635SPaolo Bonzini  -function NAME	Only output documentation for the given function(s)
67e2c54635SPaolo Bonzini			or DOC: section title(s). All other functions and DOC:
68e2c54635SPaolo Bonzini			sections are ignored. May be specified multiple times.
69e2c54635SPaolo Bonzini  -nofunction NAME	Do NOT output documentation for the given function(s);
70e2c54635SPaolo Bonzini			only output documentation for the other functions and
71e2c54635SPaolo Bonzini			DOC: sections. May be specified multiple times.
72e2c54635SPaolo Bonzini
73e2c54635SPaolo BonziniOutput selection modifiers:
74152d1967SPeter Maydell  -sphinx-version VER   Generate rST syntax for the specified Sphinx version.
75152d1967SPeter Maydell                        Only works with reStructuredTextFormat.
76e2c54635SPaolo Bonzini  -no-doc-sections	Do not output DOC: sections.
77e2c54635SPaolo Bonzini  -enable-lineno        Enable output of #define LINENO lines. Only works with
78e2c54635SPaolo Bonzini                        reStructuredText format.
79e2c54635SPaolo Bonzini  -export-file FILE     Specify an additional FILE in which to look for
80e2c54635SPaolo Bonzini                        EXPORT_SYMBOL() and EXPORT_SYMBOL_GPL(). To be used with
81e2c54635SPaolo Bonzini                        -export or -internal. May be specified multiple times.
82e2c54635SPaolo Bonzini
83e2c54635SPaolo BonziniOther parameters:
84e2c54635SPaolo Bonzini  -v			Verbose output, more warnings and other information.
85e2c54635SPaolo Bonzini  -h			Print this help.
86e2c54635SPaolo Bonzini
87e2c54635SPaolo BonziniEOF
88e2c54635SPaolo Bonzini    print $message;
89e2c54635SPaolo Bonzini    exit 1;
90e2c54635SPaolo Bonzini}
91e2c54635SPaolo Bonzini
92e2c54635SPaolo Bonzini#
93e2c54635SPaolo Bonzini# format of comments.
94e2c54635SPaolo Bonzini# In the following table, (...)? signifies optional structure.
95e2c54635SPaolo Bonzini#                         (...)* signifies 0 or more structure elements
96e2c54635SPaolo Bonzini# /**
97e2c54635SPaolo Bonzini#  * function_name(:)? (- short description)?
98e2c54635SPaolo Bonzini# (* @parameterx: (description of parameter x)?)*
99e2c54635SPaolo Bonzini# (* a blank line)?
100e2c54635SPaolo Bonzini#  * (Description:)? (Description of function)?
101e2c54635SPaolo Bonzini#  * (section header: (section description)? )*
102e2c54635SPaolo Bonzini#  (*)?*/
103e2c54635SPaolo Bonzini#
104e2c54635SPaolo Bonzini# So .. the trivial example would be:
105e2c54635SPaolo Bonzini#
106e2c54635SPaolo Bonzini# /**
107e2c54635SPaolo Bonzini#  * my_function
108e2c54635SPaolo Bonzini#  */
109e2c54635SPaolo Bonzini#
110e2c54635SPaolo Bonzini# If the Description: header tag is omitted, then there must be a blank line
111e2c54635SPaolo Bonzini# after the last parameter specification.
112e2c54635SPaolo Bonzini# e.g.
113e2c54635SPaolo Bonzini# /**
114e2c54635SPaolo Bonzini#  * my_function - does my stuff
115e2c54635SPaolo Bonzini#  * @my_arg: its mine damnit
116e2c54635SPaolo Bonzini#  *
117e2c54635SPaolo Bonzini#  * Does my stuff explained.
118e2c54635SPaolo Bonzini#  */
119e2c54635SPaolo Bonzini#
120e2c54635SPaolo Bonzini#  or, could also use:
121e2c54635SPaolo Bonzini# /**
122e2c54635SPaolo Bonzini#  * my_function - does my stuff
123e2c54635SPaolo Bonzini#  * @my_arg: its mine damnit
124e2c54635SPaolo Bonzini#  * Description: Does my stuff explained.
125e2c54635SPaolo Bonzini#  */
126e2c54635SPaolo Bonzini# etc.
127e2c54635SPaolo Bonzini#
128e2c54635SPaolo Bonzini# Besides functions you can also write documentation for structs, unions,
129e2c54635SPaolo Bonzini# enums and typedefs. Instead of the function name you must write the name
130e2c54635SPaolo Bonzini# of the declaration;  the struct/union/enum/typedef must always precede
131e2c54635SPaolo Bonzini# the name. Nesting of declarations is not supported.
132e2c54635SPaolo Bonzini# Use the argument mechanism to document members or constants.
133e2c54635SPaolo Bonzini# e.g.
134e2c54635SPaolo Bonzini# /**
135e2c54635SPaolo Bonzini#  * struct my_struct - short description
136e2c54635SPaolo Bonzini#  * @a: first member
137e2c54635SPaolo Bonzini#  * @b: second member
138e2c54635SPaolo Bonzini#  *
139e2c54635SPaolo Bonzini#  * Longer description
140e2c54635SPaolo Bonzini#  */
141e2c54635SPaolo Bonzini# struct my_struct {
142e2c54635SPaolo Bonzini#     int a;
143e2c54635SPaolo Bonzini#     int b;
144e2c54635SPaolo Bonzini# /* private: */
145e2c54635SPaolo Bonzini#     int c;
146e2c54635SPaolo Bonzini# };
147e2c54635SPaolo Bonzini#
148e2c54635SPaolo Bonzini# All descriptions can be multiline, except the short function description.
149e2c54635SPaolo Bonzini#
150e2c54635SPaolo Bonzini# For really longs structs, you can also describe arguments inside the
151e2c54635SPaolo Bonzini# body of the struct.
152e2c54635SPaolo Bonzini# eg.
153e2c54635SPaolo Bonzini# /**
154e2c54635SPaolo Bonzini#  * struct my_struct - short description
155e2c54635SPaolo Bonzini#  * @a: first member
156e2c54635SPaolo Bonzini#  * @b: second member
157e2c54635SPaolo Bonzini#  *
158e2c54635SPaolo Bonzini#  * Longer description
159e2c54635SPaolo Bonzini#  */
160e2c54635SPaolo Bonzini# struct my_struct {
161e2c54635SPaolo Bonzini#     int a;
162e2c54635SPaolo Bonzini#     int b;
163e2c54635SPaolo Bonzini#     /**
164e2c54635SPaolo Bonzini#      * @c: This is longer description of C
165e2c54635SPaolo Bonzini#      *
166e2c54635SPaolo Bonzini#      * You can use paragraphs to describe arguments
167e2c54635SPaolo Bonzini#      * using this method.
168e2c54635SPaolo Bonzini#      */
169e2c54635SPaolo Bonzini#     int c;
170e2c54635SPaolo Bonzini# };
171e2c54635SPaolo Bonzini#
172e2c54635SPaolo Bonzini# This should be use only for struct/enum members.
173e2c54635SPaolo Bonzini#
174e2c54635SPaolo Bonzini# You can also add additional sections. When documenting kernel functions you
175e2c54635SPaolo Bonzini# should document the "Context:" of the function, e.g. whether the functions
176e2c54635SPaolo Bonzini# can be called form interrupts. Unlike other sections you can end it with an
177e2c54635SPaolo Bonzini# empty line.
178e2c54635SPaolo Bonzini# A non-void function should have a "Return:" section describing the return
179e2c54635SPaolo Bonzini# value(s).
180e2c54635SPaolo Bonzini# Example-sections should contain the string EXAMPLE so that they are marked
181e2c54635SPaolo Bonzini# appropriately in DocBook.
182e2c54635SPaolo Bonzini#
183e2c54635SPaolo Bonzini# Example:
184e2c54635SPaolo Bonzini# /**
185e2c54635SPaolo Bonzini#  * user_function - function that can only be called in user context
186e2c54635SPaolo Bonzini#  * @a: some argument
187e2c54635SPaolo Bonzini#  * Context: !in_interrupt()
188e2c54635SPaolo Bonzini#  *
189e2c54635SPaolo Bonzini#  * Some description
190e2c54635SPaolo Bonzini#  * Example:
191e2c54635SPaolo Bonzini#  *    user_function(22);
192e2c54635SPaolo Bonzini#  */
193e2c54635SPaolo Bonzini# ...
194e2c54635SPaolo Bonzini#
195e2c54635SPaolo Bonzini#
196e2c54635SPaolo Bonzini# All descriptive text is further processed, scanning for the following special
197e2c54635SPaolo Bonzini# patterns, which are highlighted appropriately.
198e2c54635SPaolo Bonzini#
199e2c54635SPaolo Bonzini# 'funcname()' - function
200e2c54635SPaolo Bonzini# '$ENVVAR' - environmental variable
201e2c54635SPaolo Bonzini# '&struct_name' - name of a structure (up to two words including 'struct')
202e2c54635SPaolo Bonzini# '&struct_name.member' - name of a structure member
203e2c54635SPaolo Bonzini# '@parameter' - name of a parameter
204e2c54635SPaolo Bonzini# '%CONST' - name of a constant.
205e2c54635SPaolo Bonzini# '``LITERAL``' - literal string without any spaces on it.
206e2c54635SPaolo Bonzini
207e2c54635SPaolo Bonzini## init lots of data
208e2c54635SPaolo Bonzini
209e2c54635SPaolo Bonzinimy $errors = 0;
210e2c54635SPaolo Bonzinimy $warnings = 0;
211e2c54635SPaolo Bonzinimy $anon_struct_union = 0;
212e2c54635SPaolo Bonzini
213e2c54635SPaolo Bonzini# match expressions used to find embedded type information
214e2c54635SPaolo Bonzinimy $type_constant = '\b``([^\`]+)``\b';
215e2c54635SPaolo Bonzinimy $type_constant2 = '\%([-_\w]+)';
216e2c54635SPaolo Bonzinimy $type_func = '(\w+)\(\)';
217e2c54635SPaolo Bonzinimy $type_param = '\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
218e2c54635SPaolo Bonzinimy $type_fp_param = '\@(\w+)\(\)';  # Special RST handling for func ptr params
219e2c54635SPaolo Bonzinimy $type_env = '(\$\w+)';
2204cf41794SPaolo Bonzinimy $type_enum = '#(enum\s*([_\w]+))';
2214cf41794SPaolo Bonzinimy $type_struct = '#(struct\s*([_\w]+))';
2224cf41794SPaolo Bonzinimy $type_typedef = '#(([A-Z][_\w]*))';
2234cf41794SPaolo Bonzinimy $type_union = '#(union\s*([_\w]+))';
2244cf41794SPaolo Bonzinimy $type_member = '#([_\w]+)(\.|->)([_\w]+)';
2254cf41794SPaolo Bonzinimy $type_fallback = '(?!)';    # this never matches
226e2c54635SPaolo Bonzinimy $type_member_func = $type_member . '\(\)';
227e2c54635SPaolo Bonzini
228e2c54635SPaolo Bonzini# Output conversion substitutions.
229e2c54635SPaolo Bonzini#  One for each output format
230e2c54635SPaolo Bonzini
231e2c54635SPaolo Bonzini# these are pretty rough
232e2c54635SPaolo Bonzinimy @highlights_man = (
233e2c54635SPaolo Bonzini                      [$type_constant, "\$1"],
234e2c54635SPaolo Bonzini                      [$type_constant2, "\$1"],
235e2c54635SPaolo Bonzini                      [$type_func, "\\\\fB\$1\\\\fP"],
236e2c54635SPaolo Bonzini                      [$type_enum, "\\\\fI\$1\\\\fP"],
237e2c54635SPaolo Bonzini                      [$type_struct, "\\\\fI\$1\\\\fP"],
238e2c54635SPaolo Bonzini                      [$type_typedef, "\\\\fI\$1\\\\fP"],
239e2c54635SPaolo Bonzini                      [$type_union, "\\\\fI\$1\\\\fP"],
240e2c54635SPaolo Bonzini                      [$type_param, "\\\\fI\$1\\\\fP"],
241e2c54635SPaolo Bonzini                      [$type_member, "\\\\fI\$1\$2\$3\\\\fP"],
242e2c54635SPaolo Bonzini                      [$type_fallback, "\\\\fI\$1\\\\fP"]
243e2c54635SPaolo Bonzini		     );
244e2c54635SPaolo Bonzinimy $blankline_man = "";
245e2c54635SPaolo Bonzini
246e2c54635SPaolo Bonzini# rst-mode
247e2c54635SPaolo Bonzinimy @highlights_rst = (
248e2c54635SPaolo Bonzini                       [$type_constant, "``\$1``"],
249e2c54635SPaolo Bonzini                       [$type_constant2, "``\$1``"],
250e2c54635SPaolo Bonzini                       # Note: need to escape () to avoid func matching later
251e2c54635SPaolo Bonzini                       [$type_member_func, "\\:c\\:type\\:`\$1\$2\$3\\\\(\\\\) <\$1>`"],
252e2c54635SPaolo Bonzini                       [$type_member, "\\:c\\:type\\:`\$1\$2\$3 <\$1>`"],
253e2c54635SPaolo Bonzini		       [$type_fp_param, "**\$1\\\\(\\\\)**"],
254e2c54635SPaolo Bonzini                       [$type_func, "\$1()"],
255e2c54635SPaolo Bonzini                       [$type_enum, "\\:c\\:type\\:`\$1 <\$2>`"],
256e2c54635SPaolo Bonzini                       [$type_struct, "\\:c\\:type\\:`\$1 <\$2>`"],
257e2c54635SPaolo Bonzini                       [$type_typedef, "\\:c\\:type\\:`\$1 <\$2>`"],
258e2c54635SPaolo Bonzini                       [$type_union, "\\:c\\:type\\:`\$1 <\$2>`"],
259e2c54635SPaolo Bonzini                       # in rst this can refer to any type
260e2c54635SPaolo Bonzini                       [$type_fallback, "\\:c\\:type\\:`\$1`"],
261e2c54635SPaolo Bonzini                       [$type_param, "**\$1**"]
262e2c54635SPaolo Bonzini		      );
263e2c54635SPaolo Bonzinimy $blankline_rst = "\n";
264e2c54635SPaolo Bonzini
265e2c54635SPaolo Bonzini# read arguments
266e2c54635SPaolo Bonziniif ($#ARGV == -1) {
267e2c54635SPaolo Bonzini    usage();
268e2c54635SPaolo Bonzini}
269e2c54635SPaolo Bonzini
270e2c54635SPaolo Bonzinimy $kernelversion;
271e2c54635SPaolo Bonzinimy $dohighlight = "";
272e2c54635SPaolo Bonzini
273e2c54635SPaolo Bonzinimy $verbose = 0;
274e2c54635SPaolo Bonzinimy $output_mode = "rst";
275e2c54635SPaolo Bonzinimy $output_preformatted = 0;
276e2c54635SPaolo Bonzinimy $no_doc_sections = 0;
277e2c54635SPaolo Bonzinimy $enable_lineno = 0;
278e2c54635SPaolo Bonzinimy @highlights = @highlights_rst;
279e2c54635SPaolo Bonzinimy $blankline = $blankline_rst;
280e2c54635SPaolo Bonzinimy $modulename = "Kernel API";
281e2c54635SPaolo Bonzini
282e2c54635SPaolo Bonziniuse constant {
283e2c54635SPaolo Bonzini    OUTPUT_ALL          => 0, # output all symbols and doc sections
284e2c54635SPaolo Bonzini    OUTPUT_INCLUDE      => 1, # output only specified symbols
285e2c54635SPaolo Bonzini    OUTPUT_EXCLUDE      => 2, # output everything except specified symbols
286e2c54635SPaolo Bonzini    OUTPUT_EXPORTED     => 3, # output exported symbols
287e2c54635SPaolo Bonzini    OUTPUT_INTERNAL     => 4, # output non-exported symbols
288e2c54635SPaolo Bonzini};
289e2c54635SPaolo Bonzinimy $output_selection = OUTPUT_ALL;
290e2c54635SPaolo Bonzinimy $show_not_found = 0;	# No longer used
291152d1967SPeter Maydellmy $sphinx_version = "0.0"; # if not specified, assume old
292e2c54635SPaolo Bonzini
293e2c54635SPaolo Bonzinimy @export_file_list;
294e2c54635SPaolo Bonzini
295e2c54635SPaolo Bonzinimy @build_time;
296e2c54635SPaolo Bonziniif (defined($ENV{'KBUILD_BUILD_TIMESTAMP'}) &&
297e2c54635SPaolo Bonzini    (my $seconds = `date -d"${ENV{'KBUILD_BUILD_TIMESTAMP'}}" +%s`) ne '') {
298e2c54635SPaolo Bonzini    @build_time = gmtime($seconds);
299e2c54635SPaolo Bonzini} else {
300e2c54635SPaolo Bonzini    @build_time = localtime;
301e2c54635SPaolo Bonzini}
302e2c54635SPaolo Bonzini
303e2c54635SPaolo Bonzinimy $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
304e2c54635SPaolo Bonzini		'July', 'August', 'September', 'October',
305e2c54635SPaolo Bonzini		'November', 'December')[$build_time[4]] .
306e2c54635SPaolo Bonzini  " " . ($build_time[5]+1900);
307e2c54635SPaolo Bonzini
308e2c54635SPaolo Bonzini# Essentially these are globals.
309e2c54635SPaolo Bonzini# They probably want to be tidied up, made more localised or something.
310e2c54635SPaolo Bonzini# CAVEAT EMPTOR!  Some of the others I localised may not want to be, which
311e2c54635SPaolo Bonzini# could cause "use of undefined value" or other bugs.
312e2c54635SPaolo Bonzinimy ($function, %function_table, %parametertypes, $declaration_purpose);
313e2c54635SPaolo Bonzinimy $declaration_start_line;
314e2c54635SPaolo Bonzinimy ($type, $declaration_name, $return_type);
315e2c54635SPaolo Bonzinimy ($newsection, $newcontents, $prototype, $brcount, %source_map);
316e2c54635SPaolo Bonzini
317e2c54635SPaolo Bonziniif (defined($ENV{'KBUILD_VERBOSE'})) {
318e2c54635SPaolo Bonzini	$verbose = "$ENV{'KBUILD_VERBOSE'}";
319e2c54635SPaolo Bonzini}
320e2c54635SPaolo Bonzini
321e2c54635SPaolo Bonzini# Generated docbook code is inserted in a template at a point where
322e2c54635SPaolo Bonzini# docbook v3.1 requires a non-zero sequence of RefEntry's; see:
323e2c54635SPaolo Bonzini# http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
324e2c54635SPaolo Bonzini# We keep track of number of generated entries and generate a dummy
325e2c54635SPaolo Bonzini# if needs be to ensure the expanded template can be postprocessed
326e2c54635SPaolo Bonzini# into html.
327e2c54635SPaolo Bonzinimy $section_counter = 0;
328e2c54635SPaolo Bonzini
329e2c54635SPaolo Bonzinimy $lineprefix="";
330e2c54635SPaolo Bonzini
331e2c54635SPaolo Bonzini# Parser states
332e2c54635SPaolo Bonziniuse constant {
333e2c54635SPaolo Bonzini    STATE_NORMAL        => 0, # normal code
334e2c54635SPaolo Bonzini    STATE_NAME          => 1, # looking for function name
335e2c54635SPaolo Bonzini    STATE_BODY_MAYBE    => 2, # body - or maybe more description
336e2c54635SPaolo Bonzini    STATE_BODY          => 3, # the body of the comment
337e2c54635SPaolo Bonzini    STATE_PROTO         => 4, # scanning prototype
338e2c54635SPaolo Bonzini    STATE_DOCBLOCK      => 5, # documentation block
339e2c54635SPaolo Bonzini    STATE_INLINE        => 6, # gathering documentation outside main block
340e2c54635SPaolo Bonzini};
341e2c54635SPaolo Bonzinimy $state;
342e2c54635SPaolo Bonzinimy $in_doc_sect;
343e2c54635SPaolo Bonzinimy $leading_space;
344e2c54635SPaolo Bonzini
345e2c54635SPaolo Bonzini# Inline documentation state
346e2c54635SPaolo Bonziniuse constant {
347e2c54635SPaolo Bonzini    STATE_INLINE_NA     => 0, # not applicable ($state != STATE_INLINE)
348e2c54635SPaolo Bonzini    STATE_INLINE_NAME   => 1, # looking for member name (@foo:)
349e2c54635SPaolo Bonzini    STATE_INLINE_TEXT   => 2, # looking for member documentation
350e2c54635SPaolo Bonzini    STATE_INLINE_END    => 3, # done
351e2c54635SPaolo Bonzini    STATE_INLINE_ERROR  => 4, # error - Comment without header was found.
352e2c54635SPaolo Bonzini                              # Spit a warning as it's not
353e2c54635SPaolo Bonzini                              # proper kernel-doc and ignore the rest.
354e2c54635SPaolo Bonzini};
355e2c54635SPaolo Bonzinimy $inline_doc_state;
356e2c54635SPaolo Bonzini
357e2c54635SPaolo Bonzini#declaration types: can be
358e2c54635SPaolo Bonzini# 'function', 'struct', 'union', 'enum', 'typedef'
359e2c54635SPaolo Bonzinimy $decl_type;
360e2c54635SPaolo Bonzini
361e2c54635SPaolo Bonzinimy $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
362e2c54635SPaolo Bonzinimy $doc_end = '\*/';
363e2c54635SPaolo Bonzinimy $doc_com = '\s*\*\s*';
364e2c54635SPaolo Bonzinimy $doc_com_body = '\s*\* ?';
365e2c54635SPaolo Bonzinimy $doc_decl = $doc_com . '(\w+)';
366e2c54635SPaolo Bonzini# @params and a strictly limited set of supported section names
367e2c54635SPaolo Bonzinimy $doc_sect = $doc_com .
368e2c54635SPaolo Bonzini    '\s*(\@[.\w]+|\@\.\.\.|description|context|returns?|notes?|examples?)\s*:(.*)';
369e2c54635SPaolo Bonzinimy $doc_content = $doc_com_body . '(.*)';
370e2c54635SPaolo Bonzinimy $doc_block = $doc_com . 'DOC:\s*(.*)?';
371e2c54635SPaolo Bonzinimy $doc_inline_start = '^\s*/\*\*\s*$';
372e2c54635SPaolo Bonzinimy $doc_inline_sect = '\s*\*\s*(@\s*[\w][\w\.]*\s*):(.*)';
373e2c54635SPaolo Bonzinimy $doc_inline_end = '^\s*\*/\s*$';
374e2c54635SPaolo Bonzinimy $doc_inline_oneline = '^\s*/\*\*\s*(@[\w\s]+):\s*(.*)\s*\*/\s*$';
375e2c54635SPaolo Bonzinimy $export_symbol = '^\s*EXPORT_SYMBOL(_GPL)?\s*\(\s*(\w+)\s*\)\s*;';
376e2c54635SPaolo Bonzini
377e2c54635SPaolo Bonzinimy %parameterdescs;
378e2c54635SPaolo Bonzinimy %parameterdesc_start_lines;
379e2c54635SPaolo Bonzinimy @parameterlist;
380e2c54635SPaolo Bonzinimy %sections;
381e2c54635SPaolo Bonzinimy @sectionlist;
382e2c54635SPaolo Bonzinimy %section_start_lines;
383e2c54635SPaolo Bonzinimy $sectcheck;
384e2c54635SPaolo Bonzinimy $struct_actual;
385e2c54635SPaolo Bonzini
386e2c54635SPaolo Bonzinimy $contents = "";
387e2c54635SPaolo Bonzinimy $new_start_line = 0;
388e2c54635SPaolo Bonzini
389e2c54635SPaolo Bonzini# the canonical section names. see also $doc_sect above.
390e2c54635SPaolo Bonzinimy $section_default = "Description";	# default section
391e2c54635SPaolo Bonzinimy $section_intro = "Introduction";
392e2c54635SPaolo Bonzinimy $section = $section_default;
393e2c54635SPaolo Bonzinimy $section_context = "Context";
394e2c54635SPaolo Bonzinimy $section_return = "Return";
395e2c54635SPaolo Bonzini
396e2c54635SPaolo Bonzinimy $undescribed = "-- undescribed --";
397e2c54635SPaolo Bonzini
398e2c54635SPaolo Bonzinireset_state();
399e2c54635SPaolo Bonzini
400e2c54635SPaolo Bonziniwhile ($ARGV[0] =~ m/^--?(.*)/) {
401e2c54635SPaolo Bonzini    my $cmd = $1;
402e2c54635SPaolo Bonzini    shift @ARGV;
403e2c54635SPaolo Bonzini    if ($cmd eq "man") {
404e2c54635SPaolo Bonzini	$output_mode = "man";
405e2c54635SPaolo Bonzini	@highlights = @highlights_man;
406e2c54635SPaolo Bonzini	$blankline = $blankline_man;
407e2c54635SPaolo Bonzini    } elsif ($cmd eq "rst") {
408e2c54635SPaolo Bonzini	$output_mode = "rst";
409e2c54635SPaolo Bonzini	@highlights = @highlights_rst;
410e2c54635SPaolo Bonzini	$blankline = $blankline_rst;
411e2c54635SPaolo Bonzini    } elsif ($cmd eq "none") {
412e2c54635SPaolo Bonzini	$output_mode = "none";
413e2c54635SPaolo Bonzini    } elsif ($cmd eq "module") { # not needed for XML, inherits from calling document
414e2c54635SPaolo Bonzini	$modulename = shift @ARGV;
415e2c54635SPaolo Bonzini    } elsif ($cmd eq "function") { # to only output specific functions
416e2c54635SPaolo Bonzini	$output_selection = OUTPUT_INCLUDE;
417e2c54635SPaolo Bonzini	$function = shift @ARGV;
418e2c54635SPaolo Bonzini	$function_table{$function} = 1;
419e2c54635SPaolo Bonzini    } elsif ($cmd eq "nofunction") { # output all except specific functions
420e2c54635SPaolo Bonzini	$output_selection = OUTPUT_EXCLUDE;
421e2c54635SPaolo Bonzini	$function = shift @ARGV;
422e2c54635SPaolo Bonzini	$function_table{$function} = 1;
423e2c54635SPaolo Bonzini    } elsif ($cmd eq "export") { # only exported symbols
424e2c54635SPaolo Bonzini	$output_selection = OUTPUT_EXPORTED;
425e2c54635SPaolo Bonzini	%function_table = ();
426e2c54635SPaolo Bonzini    } elsif ($cmd eq "internal") { # only non-exported symbols
427e2c54635SPaolo Bonzini	$output_selection = OUTPUT_INTERNAL;
428e2c54635SPaolo Bonzini	%function_table = ();
429e2c54635SPaolo Bonzini    } elsif ($cmd eq "export-file") {
430e2c54635SPaolo Bonzini	my $file = shift @ARGV;
431e2c54635SPaolo Bonzini	push(@export_file_list, $file);
432e2c54635SPaolo Bonzini    } elsif ($cmd eq "v") {
433e2c54635SPaolo Bonzini	$verbose = 1;
434e2c54635SPaolo Bonzini    } elsif (($cmd eq "h") || ($cmd eq "help")) {
435e2c54635SPaolo Bonzini	usage();
436e2c54635SPaolo Bonzini    } elsif ($cmd eq 'no-doc-sections') {
437e2c54635SPaolo Bonzini	    $no_doc_sections = 1;
438e2c54635SPaolo Bonzini    } elsif ($cmd eq 'enable-lineno') {
439e2c54635SPaolo Bonzini	    $enable_lineno = 1;
440e2c54635SPaolo Bonzini    } elsif ($cmd eq 'show-not-found') {
441e2c54635SPaolo Bonzini	$show_not_found = 1;  # A no-op but don't fail
442152d1967SPeter Maydell    } elsif ($cmd eq 'sphinx-version') {
443152d1967SPeter Maydell        $sphinx_version = shift @ARGV;
444e2c54635SPaolo Bonzini    } else {
445e2c54635SPaolo Bonzini	# Unknown argument
446e2c54635SPaolo Bonzini        usage();
447e2c54635SPaolo Bonzini    }
448e2c54635SPaolo Bonzini}
449e2c54635SPaolo Bonzini
450e2c54635SPaolo Bonzini# continue execution near EOF;
451e2c54635SPaolo Bonzini
452e2c54635SPaolo Bonzini# get kernel version from env
453e2c54635SPaolo Bonzinisub get_kernel_version() {
454e2c54635SPaolo Bonzini    my $version = 'unknown kernel version';
455e2c54635SPaolo Bonzini
456e2c54635SPaolo Bonzini    if (defined($ENV{'KERNELVERSION'})) {
457e2c54635SPaolo Bonzini	$version = $ENV{'KERNELVERSION'};
458e2c54635SPaolo Bonzini    }
459e2c54635SPaolo Bonzini    return $version;
460e2c54635SPaolo Bonzini}
461e2c54635SPaolo Bonzini
462e2c54635SPaolo Bonzini#
463e2c54635SPaolo Bonzinisub print_lineno {
464e2c54635SPaolo Bonzini    my $lineno = shift;
465e2c54635SPaolo Bonzini    if ($enable_lineno && defined($lineno)) {
466e2c54635SPaolo Bonzini        print "#define LINENO " . $lineno . "\n";
467e2c54635SPaolo Bonzini    }
468e2c54635SPaolo Bonzini}
469e2c54635SPaolo Bonzini##
470e2c54635SPaolo Bonzini# dumps section contents to arrays/hashes intended for that purpose.
471e2c54635SPaolo Bonzini#
472e2c54635SPaolo Bonzinisub dump_section {
473e2c54635SPaolo Bonzini    my $file = shift;
474e2c54635SPaolo Bonzini    my $name = shift;
475e2c54635SPaolo Bonzini    my $contents = join "\n", @_;
476e2c54635SPaolo Bonzini
477e2c54635SPaolo Bonzini    if ($name =~ m/$type_param/) {
478e2c54635SPaolo Bonzini	$name = $1;
479e2c54635SPaolo Bonzini	$parameterdescs{$name} = $contents;
480e2c54635SPaolo Bonzini	$sectcheck = $sectcheck . $name . " ";
481e2c54635SPaolo Bonzini        $parameterdesc_start_lines{$name} = $new_start_line;
482e2c54635SPaolo Bonzini        $new_start_line = 0;
483e2c54635SPaolo Bonzini    } elsif ($name eq "@\.\.\.") {
484e2c54635SPaolo Bonzini	$name = "...";
485e2c54635SPaolo Bonzini	$parameterdescs{$name} = $contents;
486e2c54635SPaolo Bonzini	$sectcheck = $sectcheck . $name . " ";
487e2c54635SPaolo Bonzini        $parameterdesc_start_lines{$name} = $new_start_line;
488e2c54635SPaolo Bonzini        $new_start_line = 0;
489e2c54635SPaolo Bonzini    } else {
490e2c54635SPaolo Bonzini	if (defined($sections{$name}) && ($sections{$name} ne "")) {
491e2c54635SPaolo Bonzini	    # Only warn on user specified duplicate section names.
492e2c54635SPaolo Bonzini	    if ($name ne $section_default) {
493e2c54635SPaolo Bonzini		print STDERR "${file}:$.: warning: duplicate section name '$name'\n";
494e2c54635SPaolo Bonzini		++$warnings;
495e2c54635SPaolo Bonzini	    }
496e2c54635SPaolo Bonzini	    $sections{$name} .= $contents;
497e2c54635SPaolo Bonzini	} else {
498e2c54635SPaolo Bonzini	    $sections{$name} = $contents;
499e2c54635SPaolo Bonzini	    push @sectionlist, $name;
500e2c54635SPaolo Bonzini            $section_start_lines{$name} = $new_start_line;
501e2c54635SPaolo Bonzini            $new_start_line = 0;
502e2c54635SPaolo Bonzini	}
503e2c54635SPaolo Bonzini    }
504e2c54635SPaolo Bonzini}
505e2c54635SPaolo Bonzini
506e2c54635SPaolo Bonzini##
507e2c54635SPaolo Bonzini# dump DOC: section after checking that it should go out
508e2c54635SPaolo Bonzini#
509e2c54635SPaolo Bonzinisub dump_doc_section {
510e2c54635SPaolo Bonzini    my $file = shift;
511e2c54635SPaolo Bonzini    my $name = shift;
512e2c54635SPaolo Bonzini    my $contents = join "\n", @_;
513e2c54635SPaolo Bonzini
514e2c54635SPaolo Bonzini    if ($no_doc_sections) {
515e2c54635SPaolo Bonzini        return;
516e2c54635SPaolo Bonzini    }
517e2c54635SPaolo Bonzini
518e2c54635SPaolo Bonzini    if (($output_selection == OUTPUT_ALL) ||
519e2c54635SPaolo Bonzini	($output_selection == OUTPUT_INCLUDE &&
520e2c54635SPaolo Bonzini	 defined($function_table{$name})) ||
521e2c54635SPaolo Bonzini	($output_selection == OUTPUT_EXCLUDE &&
522e2c54635SPaolo Bonzini	 !defined($function_table{$name})))
523e2c54635SPaolo Bonzini    {
524e2c54635SPaolo Bonzini	dump_section($file, $name, $contents);
525e2c54635SPaolo Bonzini	output_blockhead({'sectionlist' => \@sectionlist,
526e2c54635SPaolo Bonzini			  'sections' => \%sections,
527e2c54635SPaolo Bonzini			  'module' => $modulename,
528e2c54635SPaolo Bonzini			  'content-only' => ($output_selection != OUTPUT_ALL), });
529e2c54635SPaolo Bonzini    }
530e2c54635SPaolo Bonzini}
531e2c54635SPaolo Bonzini
532e2c54635SPaolo Bonzini##
533e2c54635SPaolo Bonzini# output function
534e2c54635SPaolo Bonzini#
535e2c54635SPaolo Bonzini# parameterdescs, a hash.
536e2c54635SPaolo Bonzini#  function => "function name"
537e2c54635SPaolo Bonzini#  parameterlist => @list of parameters
538e2c54635SPaolo Bonzini#  parameterdescs => %parameter descriptions
539e2c54635SPaolo Bonzini#  sectionlist => @list of sections
540e2c54635SPaolo Bonzini#  sections => %section descriptions
541e2c54635SPaolo Bonzini#
542e2c54635SPaolo Bonzini
543e2c54635SPaolo Bonzinisub output_highlight {
544e2c54635SPaolo Bonzini    my $contents = join "\n",@_;
545e2c54635SPaolo Bonzini    my $line;
546e2c54635SPaolo Bonzini
547e2c54635SPaolo Bonzini#   DEBUG
548e2c54635SPaolo Bonzini#   if (!defined $contents) {
549e2c54635SPaolo Bonzini#	use Carp;
550e2c54635SPaolo Bonzini#	confess "output_highlight got called with no args?\n";
551e2c54635SPaolo Bonzini#   }
552e2c54635SPaolo Bonzini
553e2c54635SPaolo Bonzini#   print STDERR "contents b4:$contents\n";
554e2c54635SPaolo Bonzini    eval $dohighlight;
555e2c54635SPaolo Bonzini    die $@ if $@;
556e2c54635SPaolo Bonzini#   print STDERR "contents af:$contents\n";
557e2c54635SPaolo Bonzini
558e2c54635SPaolo Bonzini    foreach $line (split "\n", $contents) {
559e2c54635SPaolo Bonzini	if (! $output_preformatted) {
560e2c54635SPaolo Bonzini	    $line =~ s/^\s*//;
561e2c54635SPaolo Bonzini	}
562e2c54635SPaolo Bonzini	if ($line eq ""){
563e2c54635SPaolo Bonzini	    if (! $output_preformatted) {
564e2c54635SPaolo Bonzini		print $lineprefix, $blankline;
565e2c54635SPaolo Bonzini	    }
566e2c54635SPaolo Bonzini	} else {
567e2c54635SPaolo Bonzini	    if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
568e2c54635SPaolo Bonzini		print "\\&$line";
569e2c54635SPaolo Bonzini	    } else {
570e2c54635SPaolo Bonzini		print $lineprefix, $line;
571e2c54635SPaolo Bonzini	    }
572e2c54635SPaolo Bonzini	}
573e2c54635SPaolo Bonzini	print "\n";
574e2c54635SPaolo Bonzini    }
575e2c54635SPaolo Bonzini}
576e2c54635SPaolo Bonzini
577e2c54635SPaolo Bonzini##
578e2c54635SPaolo Bonzini# output function in man
579e2c54635SPaolo Bonzinisub output_function_man(%) {
580e2c54635SPaolo Bonzini    my %args = %{$_[0]};
581e2c54635SPaolo Bonzini    my ($parameter, $section);
582e2c54635SPaolo Bonzini    my $count;
583e2c54635SPaolo Bonzini
584e2c54635SPaolo Bonzini    print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
585e2c54635SPaolo Bonzini
586e2c54635SPaolo Bonzini    print ".SH NAME\n";
587e2c54635SPaolo Bonzini    print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
588e2c54635SPaolo Bonzini
589e2c54635SPaolo Bonzini    print ".SH SYNOPSIS\n";
590e2c54635SPaolo Bonzini    if ($args{'functiontype'} ne "") {
591e2c54635SPaolo Bonzini	print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
592e2c54635SPaolo Bonzini    } else {
593e2c54635SPaolo Bonzini	print ".B \"" . $args{'function'} . "\n";
594e2c54635SPaolo Bonzini    }
595e2c54635SPaolo Bonzini    $count = 0;
596e2c54635SPaolo Bonzini    my $parenth = "(";
597e2c54635SPaolo Bonzini    my $post = ",";
598e2c54635SPaolo Bonzini    foreach my $parameter (@{$args{'parameterlist'}}) {
599e2c54635SPaolo Bonzini	if ($count == $#{$args{'parameterlist'}}) {
600e2c54635SPaolo Bonzini	    $post = ");";
601e2c54635SPaolo Bonzini	}
602e2c54635SPaolo Bonzini	$type = $args{'parametertypes'}{$parameter};
603e2c54635SPaolo Bonzini	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
604e2c54635SPaolo Bonzini	    # pointer-to-function
605e2c54635SPaolo Bonzini	    print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
606e2c54635SPaolo Bonzini	} else {
607e2c54635SPaolo Bonzini	    $type =~ s/([^\*])$/$1 /;
608e2c54635SPaolo Bonzini	    print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
609e2c54635SPaolo Bonzini	}
610e2c54635SPaolo Bonzini	$count++;
611e2c54635SPaolo Bonzini	$parenth = "";
612e2c54635SPaolo Bonzini    }
613e2c54635SPaolo Bonzini
614e2c54635SPaolo Bonzini    print ".SH ARGUMENTS\n";
615e2c54635SPaolo Bonzini    foreach $parameter (@{$args{'parameterlist'}}) {
616e2c54635SPaolo Bonzini	my $parameter_name = $parameter;
617e2c54635SPaolo Bonzini	$parameter_name =~ s/\[.*//;
618e2c54635SPaolo Bonzini
619e2c54635SPaolo Bonzini	print ".IP \"" . $parameter . "\" 12\n";
620e2c54635SPaolo Bonzini	output_highlight($args{'parameterdescs'}{$parameter_name});
621e2c54635SPaolo Bonzini    }
622e2c54635SPaolo Bonzini    foreach $section (@{$args{'sectionlist'}}) {
623e2c54635SPaolo Bonzini	print ".SH \"", uc $section, "\"\n";
624e2c54635SPaolo Bonzini	output_highlight($args{'sections'}{$section});
625e2c54635SPaolo Bonzini    }
626e2c54635SPaolo Bonzini}
627e2c54635SPaolo Bonzini
628e2c54635SPaolo Bonzini##
629e2c54635SPaolo Bonzini# output enum in man
630e2c54635SPaolo Bonzinisub output_enum_man(%) {
631e2c54635SPaolo Bonzini    my %args = %{$_[0]};
632e2c54635SPaolo Bonzini    my ($parameter, $section);
633e2c54635SPaolo Bonzini    my $count;
634e2c54635SPaolo Bonzini
635e2c54635SPaolo Bonzini    print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
636e2c54635SPaolo Bonzini
637e2c54635SPaolo Bonzini    print ".SH NAME\n";
638e2c54635SPaolo Bonzini    print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
639e2c54635SPaolo Bonzini
640e2c54635SPaolo Bonzini    print ".SH SYNOPSIS\n";
641e2c54635SPaolo Bonzini    print "enum " . $args{'enum'} . " {\n";
642e2c54635SPaolo Bonzini    $count = 0;
643e2c54635SPaolo Bonzini    foreach my $parameter (@{$args{'parameterlist'}}) {
644e2c54635SPaolo Bonzini	print ".br\n.BI \"    $parameter\"\n";
645e2c54635SPaolo Bonzini	if ($count == $#{$args{'parameterlist'}}) {
646e2c54635SPaolo Bonzini	    print "\n};\n";
647e2c54635SPaolo Bonzini	    last;
648e2c54635SPaolo Bonzini	}
649e2c54635SPaolo Bonzini	else {
650e2c54635SPaolo Bonzini	    print ", \n.br\n";
651e2c54635SPaolo Bonzini	}
652e2c54635SPaolo Bonzini	$count++;
653e2c54635SPaolo Bonzini    }
654e2c54635SPaolo Bonzini
655e2c54635SPaolo Bonzini    print ".SH Constants\n";
656e2c54635SPaolo Bonzini    foreach $parameter (@{$args{'parameterlist'}}) {
657e2c54635SPaolo Bonzini	my $parameter_name = $parameter;
658e2c54635SPaolo Bonzini	$parameter_name =~ s/\[.*//;
659e2c54635SPaolo Bonzini
660e2c54635SPaolo Bonzini	print ".IP \"" . $parameter . "\" 12\n";
661e2c54635SPaolo Bonzini	output_highlight($args{'parameterdescs'}{$parameter_name});
662e2c54635SPaolo Bonzini    }
663e2c54635SPaolo Bonzini    foreach $section (@{$args{'sectionlist'}}) {
664e2c54635SPaolo Bonzini	print ".SH \"$section\"\n";
665e2c54635SPaolo Bonzini	output_highlight($args{'sections'}{$section});
666e2c54635SPaolo Bonzini    }
667e2c54635SPaolo Bonzini}
668e2c54635SPaolo Bonzini
669e2c54635SPaolo Bonzini##
670e2c54635SPaolo Bonzini# output struct in man
671e2c54635SPaolo Bonzinisub output_struct_man(%) {
672e2c54635SPaolo Bonzini    my %args = %{$_[0]};
673e2c54635SPaolo Bonzini    my ($parameter, $section);
674e2c54635SPaolo Bonzini
675e2c54635SPaolo Bonzini    print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
676e2c54635SPaolo Bonzini
677e2c54635SPaolo Bonzini    print ".SH NAME\n";
678e2c54635SPaolo Bonzini    print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
679e2c54635SPaolo Bonzini
680e2c54635SPaolo Bonzini    my $declaration = $args{'definition'};
681e2c54635SPaolo Bonzini    $declaration =~ s/\t/  /g;
682e2c54635SPaolo Bonzini    $declaration =~ s/\n/"\n.br\n.BI \"/g;
683e2c54635SPaolo Bonzini    print ".SH SYNOPSIS\n";
684e2c54635SPaolo Bonzini    print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
685e2c54635SPaolo Bonzini    print ".BI \"$declaration\n};\n.br\n\n";
686e2c54635SPaolo Bonzini
687e2c54635SPaolo Bonzini    print ".SH Members\n";
688e2c54635SPaolo Bonzini    foreach $parameter (@{$args{'parameterlist'}}) {
689e2c54635SPaolo Bonzini	($parameter =~ /^#/) && next;
690e2c54635SPaolo Bonzini
691e2c54635SPaolo Bonzini	my $parameter_name = $parameter;
692e2c54635SPaolo Bonzini	$parameter_name =~ s/\[.*//;
693e2c54635SPaolo Bonzini
694e2c54635SPaolo Bonzini	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
695e2c54635SPaolo Bonzini	print ".IP \"" . $parameter . "\" 12\n";
696e2c54635SPaolo Bonzini	output_highlight($args{'parameterdescs'}{$parameter_name});
697e2c54635SPaolo Bonzini    }
698e2c54635SPaolo Bonzini    foreach $section (@{$args{'sectionlist'}}) {
699e2c54635SPaolo Bonzini	print ".SH \"$section\"\n";
700e2c54635SPaolo Bonzini	output_highlight($args{'sections'}{$section});
701e2c54635SPaolo Bonzini    }
702e2c54635SPaolo Bonzini}
703e2c54635SPaolo Bonzini
704e2c54635SPaolo Bonzini##
705e2c54635SPaolo Bonzini# output typedef in man
706e2c54635SPaolo Bonzinisub output_typedef_man(%) {
707e2c54635SPaolo Bonzini    my %args = %{$_[0]};
708e2c54635SPaolo Bonzini    my ($parameter, $section);
709e2c54635SPaolo Bonzini
710e2c54635SPaolo Bonzini    print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
711e2c54635SPaolo Bonzini
712e2c54635SPaolo Bonzini    print ".SH NAME\n";
713e2c54635SPaolo Bonzini    print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
714e2c54635SPaolo Bonzini
715e2c54635SPaolo Bonzini    foreach $section (@{$args{'sectionlist'}}) {
716e2c54635SPaolo Bonzini	print ".SH \"$section\"\n";
717e2c54635SPaolo Bonzini	output_highlight($args{'sections'}{$section});
718e2c54635SPaolo Bonzini    }
719e2c54635SPaolo Bonzini}
720e2c54635SPaolo Bonzini
721e2c54635SPaolo Bonzinisub output_blockhead_man(%) {
722e2c54635SPaolo Bonzini    my %args = %{$_[0]};
723e2c54635SPaolo Bonzini    my ($parameter, $section);
724e2c54635SPaolo Bonzini    my $count;
725e2c54635SPaolo Bonzini
726e2c54635SPaolo Bonzini    print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
727e2c54635SPaolo Bonzini
728e2c54635SPaolo Bonzini    foreach $section (@{$args{'sectionlist'}}) {
729e2c54635SPaolo Bonzini	print ".SH \"$section\"\n";
730e2c54635SPaolo Bonzini	output_highlight($args{'sections'}{$section});
731e2c54635SPaolo Bonzini    }
732e2c54635SPaolo Bonzini}
733e2c54635SPaolo Bonzini
734e2c54635SPaolo Bonzini##
735e2c54635SPaolo Bonzini# output in restructured text
736e2c54635SPaolo Bonzini#
737e2c54635SPaolo Bonzini
738e2c54635SPaolo Bonzini#
739e2c54635SPaolo Bonzini# This could use some work; it's used to output the DOC: sections, and
740e2c54635SPaolo Bonzini# starts by putting out the name of the doc section itself, but that tends
741e2c54635SPaolo Bonzini# to duplicate a header already in the template file.
742e2c54635SPaolo Bonzini#
743e2c54635SPaolo Bonzinisub output_blockhead_rst(%) {
744e2c54635SPaolo Bonzini    my %args = %{$_[0]};
745e2c54635SPaolo Bonzini    my ($parameter, $section);
746e2c54635SPaolo Bonzini
747e2c54635SPaolo Bonzini    foreach $section (@{$args{'sectionlist'}}) {
748e2c54635SPaolo Bonzini	if ($output_selection != OUTPUT_INCLUDE) {
749e2c54635SPaolo Bonzini	    print "**$section**\n\n";
750e2c54635SPaolo Bonzini	}
751e2c54635SPaolo Bonzini        print_lineno($section_start_lines{$section});
752e2c54635SPaolo Bonzini	output_highlight_rst($args{'sections'}{$section});
753e2c54635SPaolo Bonzini	print "\n";
754e2c54635SPaolo Bonzini    }
755e2c54635SPaolo Bonzini}
756e2c54635SPaolo Bonzini
757e2c54635SPaolo Bonzini#
758e2c54635SPaolo Bonzini# Apply the RST highlights to a sub-block of text.
759e2c54635SPaolo Bonzini#
760e2c54635SPaolo Bonzinisub highlight_block($) {
761e2c54635SPaolo Bonzini    # The dohighlight kludge requires the text be called $contents
762e2c54635SPaolo Bonzini    my $contents = shift;
763e2c54635SPaolo Bonzini    eval $dohighlight;
764e2c54635SPaolo Bonzini    die $@ if $@;
765e2c54635SPaolo Bonzini    return $contents;
766e2c54635SPaolo Bonzini}
767e2c54635SPaolo Bonzini
768e2c54635SPaolo Bonzini#
769e2c54635SPaolo Bonzini# Regexes used only here.
770e2c54635SPaolo Bonzini#
771e2c54635SPaolo Bonzinimy $sphinx_literal = '^[^.].*::$';
772e2c54635SPaolo Bonzinimy $sphinx_cblock = '^\.\.\ +code-block::';
773e2c54635SPaolo Bonzini
774e2c54635SPaolo Bonzinisub output_highlight_rst {
775e2c54635SPaolo Bonzini    my $input = join "\n",@_;
776e2c54635SPaolo Bonzini    my $output = "";
777e2c54635SPaolo Bonzini    my $line;
778e2c54635SPaolo Bonzini    my $in_literal = 0;
779e2c54635SPaolo Bonzini    my $litprefix;
780e2c54635SPaolo Bonzini    my $block = "";
781e2c54635SPaolo Bonzini
782e2c54635SPaolo Bonzini    foreach $line (split "\n",$input) {
783e2c54635SPaolo Bonzini	#
784e2c54635SPaolo Bonzini	# If we're in a literal block, see if we should drop out
785e2c54635SPaolo Bonzini	# of it.  Otherwise pass the line straight through unmunged.
786e2c54635SPaolo Bonzini	#
787e2c54635SPaolo Bonzini	if ($in_literal) {
788e2c54635SPaolo Bonzini	    if (! ($line =~ /^\s*$/)) {
789e2c54635SPaolo Bonzini		#
790e2c54635SPaolo Bonzini		# If this is the first non-blank line in a literal
791e2c54635SPaolo Bonzini		# block we need to figure out what the proper indent is.
792e2c54635SPaolo Bonzini		#
793e2c54635SPaolo Bonzini		if ($litprefix eq "") {
794e2c54635SPaolo Bonzini		    $line =~ /^(\s*)/;
795e2c54635SPaolo Bonzini		    $litprefix = '^' . $1;
796e2c54635SPaolo Bonzini		    $output .= $line . "\n";
797e2c54635SPaolo Bonzini		} elsif (! ($line =~ /$litprefix/)) {
798e2c54635SPaolo Bonzini		    $in_literal = 0;
799e2c54635SPaolo Bonzini		} else {
800e2c54635SPaolo Bonzini		    $output .= $line . "\n";
801e2c54635SPaolo Bonzini		}
802e2c54635SPaolo Bonzini	    } else {
803e2c54635SPaolo Bonzini		$output .= $line . "\n";
804e2c54635SPaolo Bonzini	    }
805e2c54635SPaolo Bonzini	}
806e2c54635SPaolo Bonzini	#
807e2c54635SPaolo Bonzini	# Not in a literal block (or just dropped out)
808e2c54635SPaolo Bonzini	#
809e2c54635SPaolo Bonzini	if (! $in_literal) {
810e2c54635SPaolo Bonzini	    $block .= $line . "\n";
811e2c54635SPaolo Bonzini	    if (($line =~ /$sphinx_literal/) || ($line =~ /$sphinx_cblock/)) {
812e2c54635SPaolo Bonzini		$in_literal = 1;
813e2c54635SPaolo Bonzini		$litprefix = "";
814e2c54635SPaolo Bonzini		$output .= highlight_block($block);
815e2c54635SPaolo Bonzini		$block = ""
816e2c54635SPaolo Bonzini	    }
817e2c54635SPaolo Bonzini	}
818e2c54635SPaolo Bonzini    }
819e2c54635SPaolo Bonzini
820e2c54635SPaolo Bonzini    if ($block) {
821e2c54635SPaolo Bonzini	$output .= highlight_block($block);
822e2c54635SPaolo Bonzini    }
823e2c54635SPaolo Bonzini    foreach $line (split "\n", $output) {
824e2c54635SPaolo Bonzini	print $lineprefix . $line . "\n";
825e2c54635SPaolo Bonzini    }
826e2c54635SPaolo Bonzini}
827e2c54635SPaolo Bonzini
828e2c54635SPaolo Bonzinisub output_function_rst(%) {
829e2c54635SPaolo Bonzini    my %args = %{$_[0]};
830e2c54635SPaolo Bonzini    my ($parameter, $section);
831e2c54635SPaolo Bonzini    my $oldprefix = $lineprefix;
832e2c54635SPaolo Bonzini    my $start = "";
833e2c54635SPaolo Bonzini
834e2c54635SPaolo Bonzini    if ($args{'typedef'}) {
835e2c54635SPaolo Bonzini	print ".. c:type:: ". $args{'function'} . "\n\n";
836e2c54635SPaolo Bonzini	print_lineno($declaration_start_line);
837e2c54635SPaolo Bonzini	print "   **Typedef**: ";
838e2c54635SPaolo Bonzini	$lineprefix = "";
839e2c54635SPaolo Bonzini	output_highlight_rst($args{'purpose'});
840e2c54635SPaolo Bonzini	$start = "\n\n**Syntax**\n\n  ``";
841e2c54635SPaolo Bonzini    } else {
84292bb29f9SPeter Maydell        if ((split(/\./, $sphinx_version))[0] >= 3) {
84392bb29f9SPeter Maydell            # Sphinx 3 and later distinguish macros and functions and
84492bb29f9SPeter Maydell            # complain if you use c:function with something that's not
84592bb29f9SPeter Maydell            # syntactically valid as a function declaration.
84692bb29f9SPeter Maydell            # We assume that anything with a return type is a function
84792bb29f9SPeter Maydell            # and anything without is a macro.
84892bb29f9SPeter Maydell            if ($args{'functiontype'} ne "") {
849e2c54635SPaolo Bonzini                print ".. c:function:: ";
85092bb29f9SPeter Maydell            } else {
85192bb29f9SPeter Maydell                print ".. c:macro:: ";
85292bb29f9SPeter Maydell            }
85392bb29f9SPeter Maydell        } else {
85492bb29f9SPeter Maydell            # Older Sphinx don't support documenting macros that take
85592bb29f9SPeter Maydell            # arguments with c:macro, and don't complain about the use
85692bb29f9SPeter Maydell            # of c:function for this.
85792bb29f9SPeter Maydell            print ".. c:function:: ";
85892bb29f9SPeter Maydell        }
859e2c54635SPaolo Bonzini    }
860e2c54635SPaolo Bonzini    if ($args{'functiontype'} ne "") {
861e2c54635SPaolo Bonzini	$start .= $args{'functiontype'} . " " . $args{'function'} . " (";
862e2c54635SPaolo Bonzini    } else {
863e2c54635SPaolo Bonzini	$start .= $args{'function'} . " (";
864e2c54635SPaolo Bonzini    }
865e2c54635SPaolo Bonzini    print $start;
866e2c54635SPaolo Bonzini
867e2c54635SPaolo Bonzini    my $count = 0;
868e2c54635SPaolo Bonzini    foreach my $parameter (@{$args{'parameterlist'}}) {
869e2c54635SPaolo Bonzini	if ($count ne 0) {
870e2c54635SPaolo Bonzini	    print ", ";
871e2c54635SPaolo Bonzini	}
872e2c54635SPaolo Bonzini	$count++;
873e2c54635SPaolo Bonzini	$type = $args{'parametertypes'}{$parameter};
874e2c54635SPaolo Bonzini
875e2c54635SPaolo Bonzini	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
876e2c54635SPaolo Bonzini	    # pointer-to-function
877a62d5637SPeter Maydell	    print $1 . $parameter . ") (" . $2 . ")";
878e2c54635SPaolo Bonzini	} else {
879e2c54635SPaolo Bonzini	    print $type . " " . $parameter;
880e2c54635SPaolo Bonzini	}
881e2c54635SPaolo Bonzini    }
882e2c54635SPaolo Bonzini    if ($args{'typedef'}) {
883e2c54635SPaolo Bonzini	print ");``\n\n";
884e2c54635SPaolo Bonzini    } else {
885e2c54635SPaolo Bonzini	print ")\n\n";
886e2c54635SPaolo Bonzini	print_lineno($declaration_start_line);
887e2c54635SPaolo Bonzini	$lineprefix = "   ";
888e2c54635SPaolo Bonzini	output_highlight_rst($args{'purpose'});
889e2c54635SPaolo Bonzini	print "\n";
890e2c54635SPaolo Bonzini    }
891e2c54635SPaolo Bonzini
892e2c54635SPaolo Bonzini    print "**Parameters**\n\n";
893e2c54635SPaolo Bonzini    $lineprefix = "  ";
894e2c54635SPaolo Bonzini    foreach $parameter (@{$args{'parameterlist'}}) {
895e2c54635SPaolo Bonzini	my $parameter_name = $parameter;
896e2c54635SPaolo Bonzini	$parameter_name =~ s/\[.*//;
897e2c54635SPaolo Bonzini	$type = $args{'parametertypes'}{$parameter};
898e2c54635SPaolo Bonzini
899e2c54635SPaolo Bonzini	if ($type ne "") {
900e2c54635SPaolo Bonzini	    print "``$type $parameter``\n";
901e2c54635SPaolo Bonzini	} else {
902e2c54635SPaolo Bonzini	    print "``$parameter``\n";
903e2c54635SPaolo Bonzini	}
904e2c54635SPaolo Bonzini
905e2c54635SPaolo Bonzini        print_lineno($parameterdesc_start_lines{$parameter_name});
906e2c54635SPaolo Bonzini
907e2c54635SPaolo Bonzini	if (defined($args{'parameterdescs'}{$parameter_name}) &&
908e2c54635SPaolo Bonzini	    $args{'parameterdescs'}{$parameter_name} ne $undescribed) {
909e2c54635SPaolo Bonzini	    output_highlight_rst($args{'parameterdescs'}{$parameter_name});
910e2c54635SPaolo Bonzini	} else {
911e2c54635SPaolo Bonzini	    print "  *undescribed*\n";
912e2c54635SPaolo Bonzini	}
913e2c54635SPaolo Bonzini	print "\n";
914e2c54635SPaolo Bonzini    }
915e2c54635SPaolo Bonzini
916e2c54635SPaolo Bonzini    $lineprefix = $oldprefix;
917e2c54635SPaolo Bonzini    output_section_rst(@_);
918e2c54635SPaolo Bonzini}
919e2c54635SPaolo Bonzini
920e2c54635SPaolo Bonzinisub output_section_rst(%) {
921e2c54635SPaolo Bonzini    my %args = %{$_[0]};
922e2c54635SPaolo Bonzini    my $section;
923e2c54635SPaolo Bonzini    my $oldprefix = $lineprefix;
924e2c54635SPaolo Bonzini    $lineprefix = "";
925e2c54635SPaolo Bonzini
926e2c54635SPaolo Bonzini    foreach $section (@{$args{'sectionlist'}}) {
927e2c54635SPaolo Bonzini	print "**$section**\n\n";
928e2c54635SPaolo Bonzini        print_lineno($section_start_lines{$section});
929e2c54635SPaolo Bonzini	output_highlight_rst($args{'sections'}{$section});
930e2c54635SPaolo Bonzini	print "\n";
931e2c54635SPaolo Bonzini    }
932e2c54635SPaolo Bonzini    print "\n";
933e2c54635SPaolo Bonzini    $lineprefix = $oldprefix;
934e2c54635SPaolo Bonzini}
935e2c54635SPaolo Bonzini
936e2c54635SPaolo Bonzinisub output_enum_rst(%) {
937e2c54635SPaolo Bonzini    my %args = %{$_[0]};
938e2c54635SPaolo Bonzini    my ($parameter);
939e2c54635SPaolo Bonzini    my $oldprefix = $lineprefix;
940e2c54635SPaolo Bonzini    my $count;
941e2c54635SPaolo Bonzini    my $name = "enum " . $args{'enum'};
942e2c54635SPaolo Bonzini
943e2c54635SPaolo Bonzini    print "\n\n.. c:type:: " . $name . "\n\n";
944e2c54635SPaolo Bonzini    print_lineno($declaration_start_line);
945e2c54635SPaolo Bonzini    $lineprefix = "   ";
946e2c54635SPaolo Bonzini    output_highlight_rst($args{'purpose'});
947e2c54635SPaolo Bonzini    print "\n";
948e2c54635SPaolo Bonzini
949e2c54635SPaolo Bonzini    print "**Constants**\n\n";
950e2c54635SPaolo Bonzini    $lineprefix = "  ";
951e2c54635SPaolo Bonzini    foreach $parameter (@{$args{'parameterlist'}}) {
952e2c54635SPaolo Bonzini	print "``$parameter``\n";
953e2c54635SPaolo Bonzini	if ($args{'parameterdescs'}{$parameter} ne $undescribed) {
954e2c54635SPaolo Bonzini	    output_highlight_rst($args{'parameterdescs'}{$parameter});
955e2c54635SPaolo Bonzini	} else {
956e2c54635SPaolo Bonzini	    print "  *undescribed*\n";
957e2c54635SPaolo Bonzini	}
958e2c54635SPaolo Bonzini	print "\n";
959e2c54635SPaolo Bonzini    }
960e2c54635SPaolo Bonzini
961e2c54635SPaolo Bonzini    $lineprefix = $oldprefix;
962e2c54635SPaolo Bonzini    output_section_rst(@_);
963e2c54635SPaolo Bonzini}
964e2c54635SPaolo Bonzini
965e2c54635SPaolo Bonzinisub output_typedef_rst(%) {
966e2c54635SPaolo Bonzini    my %args = %{$_[0]};
967e2c54635SPaolo Bonzini    my ($parameter);
968e2c54635SPaolo Bonzini    my $oldprefix = $lineprefix;
969e2c54635SPaolo Bonzini    my $name = "typedef " . $args{'typedef'};
970e2c54635SPaolo Bonzini
971e2c54635SPaolo Bonzini    print "\n\n.. c:type:: " . $name . "\n\n";
972e2c54635SPaolo Bonzini    print_lineno($declaration_start_line);
973e2c54635SPaolo Bonzini    $lineprefix = "   ";
974e2c54635SPaolo Bonzini    output_highlight_rst($args{'purpose'});
975e2c54635SPaolo Bonzini    print "\n";
976e2c54635SPaolo Bonzini
977e2c54635SPaolo Bonzini    $lineprefix = $oldprefix;
978e2c54635SPaolo Bonzini    output_section_rst(@_);
979e2c54635SPaolo Bonzini}
980e2c54635SPaolo Bonzini
981e2c54635SPaolo Bonzinisub output_struct_rst(%) {
982e2c54635SPaolo Bonzini    my %args = %{$_[0]};
983e2c54635SPaolo Bonzini    my ($parameter);
984e2c54635SPaolo Bonzini    my $oldprefix = $lineprefix;
985e2c54635SPaolo Bonzini    my $name = $args{'type'} . " " . $args{'struct'};
986e2c54635SPaolo Bonzini
987152d1967SPeter Maydell    # Sphinx 3.0 and up will emit warnings for "c:type:: struct Foo".
988152d1967SPeter Maydell    # It wants to see "c:struct:: Foo" (and will add the word 'struct' in
989152d1967SPeter Maydell    # the rendered output).
990152d1967SPeter Maydell    if ((split(/\./, $sphinx_version))[0] >= 3) {
991152d1967SPeter Maydell        my $sname = $name;
992152d1967SPeter Maydell        $sname =~ s/^struct //;
993152d1967SPeter Maydell        print "\n\n.. c:struct:: " . $sname . "\n\n";
994152d1967SPeter Maydell    } else {
995e2c54635SPaolo Bonzini        print "\n\n.. c:type:: " . $name . "\n\n";
996152d1967SPeter Maydell    }
997e2c54635SPaolo Bonzini    print_lineno($declaration_start_line);
998e2c54635SPaolo Bonzini    $lineprefix = "   ";
999e2c54635SPaolo Bonzini    output_highlight_rst($args{'purpose'});
1000e2c54635SPaolo Bonzini    print "\n";
1001e2c54635SPaolo Bonzini
1002e2c54635SPaolo Bonzini    print "**Definition**\n\n";
1003e2c54635SPaolo Bonzini    print "::\n\n";
1004e2c54635SPaolo Bonzini    my $declaration = $args{'definition'};
1005e2c54635SPaolo Bonzini    $declaration =~ s/\t/  /g;
1006e2c54635SPaolo Bonzini    print "  " . $args{'type'} . " " . $args{'struct'} . " {\n$declaration  };\n\n";
1007e2c54635SPaolo Bonzini
1008e2c54635SPaolo Bonzini    print "**Members**\n\n";
1009e2c54635SPaolo Bonzini    $lineprefix = "  ";
1010e2c54635SPaolo Bonzini    foreach $parameter (@{$args{'parameterlist'}}) {
1011e2c54635SPaolo Bonzini	($parameter =~ /^#/) && next;
1012e2c54635SPaolo Bonzini
1013e2c54635SPaolo Bonzini	my $parameter_name = $parameter;
1014e2c54635SPaolo Bonzini	$parameter_name =~ s/\[.*//;
1015e2c54635SPaolo Bonzini
1016e2c54635SPaolo Bonzini	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1017e2c54635SPaolo Bonzini	$type = $args{'parametertypes'}{$parameter};
1018e2c54635SPaolo Bonzini        print_lineno($parameterdesc_start_lines{$parameter_name});
1019e2c54635SPaolo Bonzini	print "``" . $parameter . "``\n";
1020e2c54635SPaolo Bonzini	output_highlight_rst($args{'parameterdescs'}{$parameter_name});
1021e2c54635SPaolo Bonzini	print "\n";
1022e2c54635SPaolo Bonzini    }
1023e2c54635SPaolo Bonzini    print "\n";
1024e2c54635SPaolo Bonzini
1025e2c54635SPaolo Bonzini    $lineprefix = $oldprefix;
1026e2c54635SPaolo Bonzini    output_section_rst(@_);
1027e2c54635SPaolo Bonzini}
1028e2c54635SPaolo Bonzini
1029e2c54635SPaolo Bonzini## none mode output functions
1030e2c54635SPaolo Bonzini
1031e2c54635SPaolo Bonzinisub output_function_none(%) {
1032e2c54635SPaolo Bonzini}
1033e2c54635SPaolo Bonzini
1034e2c54635SPaolo Bonzinisub output_enum_none(%) {
1035e2c54635SPaolo Bonzini}
1036e2c54635SPaolo Bonzini
1037e2c54635SPaolo Bonzinisub output_typedef_none(%) {
1038e2c54635SPaolo Bonzini}
1039e2c54635SPaolo Bonzini
1040e2c54635SPaolo Bonzinisub output_struct_none(%) {
1041e2c54635SPaolo Bonzini}
1042e2c54635SPaolo Bonzini
1043e2c54635SPaolo Bonzinisub output_blockhead_none(%) {
1044e2c54635SPaolo Bonzini}
1045e2c54635SPaolo Bonzini
1046e2c54635SPaolo Bonzini##
1047e2c54635SPaolo Bonzini# generic output function for all types (function, struct/union, typedef, enum);
1048e2c54635SPaolo Bonzini# calls the generated, variable output_ function name based on
1049e2c54635SPaolo Bonzini# functype and output_mode
1050e2c54635SPaolo Bonzinisub output_declaration {
1051e2c54635SPaolo Bonzini    no strict 'refs';
1052e2c54635SPaolo Bonzini    my $name = shift;
1053e2c54635SPaolo Bonzini    my $functype = shift;
1054e2c54635SPaolo Bonzini    my $func = "output_${functype}_$output_mode";
1055e2c54635SPaolo Bonzini    if (($output_selection == OUTPUT_ALL) ||
1056e2c54635SPaolo Bonzini	(($output_selection == OUTPUT_INCLUDE ||
1057e2c54635SPaolo Bonzini	  $output_selection == OUTPUT_EXPORTED) &&
1058e2c54635SPaolo Bonzini	 defined($function_table{$name})) ||
1059e2c54635SPaolo Bonzini	(($output_selection == OUTPUT_EXCLUDE ||
1060e2c54635SPaolo Bonzini	  $output_selection == OUTPUT_INTERNAL) &&
1061e2c54635SPaolo Bonzini	 !($functype eq "function" && defined($function_table{$name}))))
1062e2c54635SPaolo Bonzini    {
1063e2c54635SPaolo Bonzini	&$func(@_);
1064e2c54635SPaolo Bonzini	$section_counter++;
1065e2c54635SPaolo Bonzini    }
1066e2c54635SPaolo Bonzini}
1067e2c54635SPaolo Bonzini
1068e2c54635SPaolo Bonzini##
1069e2c54635SPaolo Bonzini# generic output function - calls the right one based on current output mode.
1070e2c54635SPaolo Bonzinisub output_blockhead {
1071e2c54635SPaolo Bonzini    no strict 'refs';
1072e2c54635SPaolo Bonzini    my $func = "output_blockhead_" . $output_mode;
1073e2c54635SPaolo Bonzini    &$func(@_);
1074e2c54635SPaolo Bonzini    $section_counter++;
1075e2c54635SPaolo Bonzini}
1076e2c54635SPaolo Bonzini
1077e2c54635SPaolo Bonzini##
1078e2c54635SPaolo Bonzini# takes a declaration (struct, union, enum, typedef) and
1079e2c54635SPaolo Bonzini# invokes the right handler. NOT called for functions.
1080e2c54635SPaolo Bonzinisub dump_declaration($$) {
1081e2c54635SPaolo Bonzini    no strict 'refs';
1082e2c54635SPaolo Bonzini    my ($prototype, $file) = @_;
1083e2c54635SPaolo Bonzini    my $func = "dump_" . $decl_type;
1084e2c54635SPaolo Bonzini    &$func(@_);
1085e2c54635SPaolo Bonzini}
1086e2c54635SPaolo Bonzini
1087e2c54635SPaolo Bonzinisub dump_union($$) {
1088e2c54635SPaolo Bonzini    dump_struct(@_);
1089e2c54635SPaolo Bonzini}
1090e2c54635SPaolo Bonzini
1091e2c54635SPaolo Bonzinisub dump_struct($$) {
1092e2c54635SPaolo Bonzini    my $x = shift;
1093e2c54635SPaolo Bonzini    my $file = shift;
1094e2c54635SPaolo Bonzini
1095b5a8dfb5SAndré Almeida    if ($x =~ /(struct|union)\s+(\w+)\s*\{(.*)\}(\s*(__packed|__aligned|____cacheline_aligned_in_smp|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*/) {
1096e2c54635SPaolo Bonzini	my $decl_type = $1;
1097e2c54635SPaolo Bonzini	$declaration_name = $2;
1098e2c54635SPaolo Bonzini	my $members = $3;
1099e2c54635SPaolo Bonzini
1100e2c54635SPaolo Bonzini	# ignore members marked private:
1101e2c54635SPaolo Bonzini	$members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gosi;
1102e2c54635SPaolo Bonzini	$members =~ s/\/\*\s*private:.*//gosi;
1103e2c54635SPaolo Bonzini	# strip comments:
1104e2c54635SPaolo Bonzini	$members =~ s/\/\*.*?\*\///gos;
1105e2c54635SPaolo Bonzini	# strip attributes
1106e2c54635SPaolo Bonzini	$members =~ s/\s*__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)/ /gi;
1107e2c54635SPaolo Bonzini	$members =~ s/\s*__aligned\s*\([^;]*\)/ /gos;
1108e2c54635SPaolo Bonzini	$members =~ s/\s*__packed\s*/ /gos;
1109e2c54635SPaolo Bonzini	$members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos;
1110b5a8dfb5SAndré Almeida	$members =~ s/\s*____cacheline_aligned_in_smp/ /gos;
1111e2c54635SPaolo Bonzini	# replace DECLARE_BITMAP
1112e2c54635SPaolo Bonzini	$members =~ s/DECLARE_BITMAP\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
1113e2c54635SPaolo Bonzini	# replace DECLARE_HASHTABLE
1114e2c54635SPaolo Bonzini	$members =~ s/DECLARE_HASHTABLE\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[1 << (($2) - 1)\]/gos;
1115e2c54635SPaolo Bonzini	# replace DECLARE_KFIFO
1116e2c54635SPaolo Bonzini	$members =~ s/DECLARE_KFIFO\s*\(([^,)]+),\s*([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos;
1117e2c54635SPaolo Bonzini	# replace DECLARE_KFIFO_PTR
1118e2c54635SPaolo Bonzini	$members =~ s/DECLARE_KFIFO_PTR\s*\(([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos;
1119e2c54635SPaolo Bonzini
1120e2c54635SPaolo Bonzini	my $declaration = $members;
1121e2c54635SPaolo Bonzini
1122e2c54635SPaolo Bonzini	# Split nested struct/union elements as newer ones
1123e2c54635SPaolo Bonzini	while ($members =~ m/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/) {
1124e2c54635SPaolo Bonzini		my $newmember;
1125e2c54635SPaolo Bonzini		my $maintype = $1;
1126e2c54635SPaolo Bonzini		my $ids = $4;
1127e2c54635SPaolo Bonzini		my $content = $3;
1128e2c54635SPaolo Bonzini		foreach my $id(split /,/, $ids) {
1129e2c54635SPaolo Bonzini			$newmember .= "$maintype $id; ";
1130e2c54635SPaolo Bonzini
1131e2c54635SPaolo Bonzini			$id =~ s/[:\[].*//;
1132e2c54635SPaolo Bonzini			$id =~ s/^\s*\**(\S+)\s*/$1/;
1133e2c54635SPaolo Bonzini			foreach my $arg (split /;/, $content) {
1134e2c54635SPaolo Bonzini				next if ($arg =~ m/^\s*$/);
1135e2c54635SPaolo Bonzini				if ($arg =~ m/^([^\(]+\(\*?\s*)([\w\.]*)(\s*\).*)/) {
1136e2c54635SPaolo Bonzini					# pointer-to-function
1137e2c54635SPaolo Bonzini					my $type = $1;
1138e2c54635SPaolo Bonzini					my $name = $2;
1139e2c54635SPaolo Bonzini					my $extra = $3;
1140e2c54635SPaolo Bonzini					next if (!$name);
1141e2c54635SPaolo Bonzini					if ($id =~ m/^\s*$/) {
1142e2c54635SPaolo Bonzini						# anonymous struct/union
1143e2c54635SPaolo Bonzini						$newmember .= "$type$name$extra; ";
1144e2c54635SPaolo Bonzini					} else {
1145e2c54635SPaolo Bonzini						$newmember .= "$type$id.$name$extra; ";
1146e2c54635SPaolo Bonzini					}
1147e2c54635SPaolo Bonzini				} else {
1148e2c54635SPaolo Bonzini					my $type;
1149e2c54635SPaolo Bonzini					my $names;
1150e2c54635SPaolo Bonzini					$arg =~ s/^\s+//;
1151e2c54635SPaolo Bonzini					$arg =~ s/\s+$//;
1152e2c54635SPaolo Bonzini					# Handle bitmaps
1153e2c54635SPaolo Bonzini					$arg =~ s/:\s*\d+\s*//g;
1154e2c54635SPaolo Bonzini					# Handle arrays
1155e2c54635SPaolo Bonzini					$arg =~ s/\[.*\]//g;
1156e2c54635SPaolo Bonzini					# The type may have multiple words,
1157e2c54635SPaolo Bonzini					# and multiple IDs can be defined, like:
1158e2c54635SPaolo Bonzini					#	const struct foo, *bar, foobar
1159e2c54635SPaolo Bonzini					# So, we remove spaces when parsing the
1160e2c54635SPaolo Bonzini					# names, in order to match just names
1161e2c54635SPaolo Bonzini					# and commas for the names
1162e2c54635SPaolo Bonzini					$arg =~ s/\s*,\s*/,/g;
1163e2c54635SPaolo Bonzini					if ($arg =~ m/(.*)\s+([\S+,]+)/) {
1164e2c54635SPaolo Bonzini						$type = $1;
1165e2c54635SPaolo Bonzini						$names = $2;
1166e2c54635SPaolo Bonzini					} else {
1167e2c54635SPaolo Bonzini						$newmember .= "$arg; ";
1168e2c54635SPaolo Bonzini						next;
1169e2c54635SPaolo Bonzini					}
1170e2c54635SPaolo Bonzini					foreach my $name (split /,/, $names) {
1171e2c54635SPaolo Bonzini						$name =~ s/^\s*\**(\S+)\s*/$1/;
1172e2c54635SPaolo Bonzini						next if (($name =~ m/^\s*$/));
1173e2c54635SPaolo Bonzini						if ($id =~ m/^\s*$/) {
1174e2c54635SPaolo Bonzini							# anonymous struct/union
1175e2c54635SPaolo Bonzini							$newmember .= "$type $name; ";
1176e2c54635SPaolo Bonzini						} else {
1177e2c54635SPaolo Bonzini							$newmember .= "$type $id.$name; ";
1178e2c54635SPaolo Bonzini						}
1179e2c54635SPaolo Bonzini					}
1180e2c54635SPaolo Bonzini				}
1181e2c54635SPaolo Bonzini			}
1182e2c54635SPaolo Bonzini		}
1183e2c54635SPaolo Bonzini		$members =~ s/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/$newmember/;
1184e2c54635SPaolo Bonzini	}
1185e2c54635SPaolo Bonzini
1186e2c54635SPaolo Bonzini	# Ignore other nested elements, like enums
1187e2c54635SPaolo Bonzini	$members =~ s/(\{[^\{\}]*\})//g;
1188e2c54635SPaolo Bonzini
1189e2c54635SPaolo Bonzini	create_parameterlist($members, ';', $file, $declaration_name);
1190e2c54635SPaolo Bonzini	check_sections($file, $declaration_name, $decl_type, $sectcheck, $struct_actual);
1191e2c54635SPaolo Bonzini
1192e2c54635SPaolo Bonzini	# Adjust declaration for better display
1193e2c54635SPaolo Bonzini	$declaration =~ s/([\{;])/$1\n/g;
1194e2c54635SPaolo Bonzini	$declaration =~ s/\}\s+;/};/g;
1195e2c54635SPaolo Bonzini	# Better handle inlined enums
1196e2c54635SPaolo Bonzini	do {} while ($declaration =~ s/(enum\s+\{[^\}]+),([^\n])/$1,\n$2/);
1197e2c54635SPaolo Bonzini
1198e2c54635SPaolo Bonzini	my @def_args = split /\n/, $declaration;
1199e2c54635SPaolo Bonzini	my $level = 1;
1200e2c54635SPaolo Bonzini	$declaration = "";
1201e2c54635SPaolo Bonzini	foreach my $clause (@def_args) {
1202e2c54635SPaolo Bonzini		$clause =~ s/^\s+//;
1203e2c54635SPaolo Bonzini		$clause =~ s/\s+$//;
1204e2c54635SPaolo Bonzini		$clause =~ s/\s+/ /;
1205e2c54635SPaolo Bonzini		next if (!$clause);
1206e2c54635SPaolo Bonzini		$level-- if ($clause =~ m/(\})/ && $level > 1);
1207e2c54635SPaolo Bonzini		if (!($clause =~ m/^\s*#/)) {
1208e2c54635SPaolo Bonzini			$declaration .= "\t" x $level;
1209e2c54635SPaolo Bonzini		}
1210e2c54635SPaolo Bonzini		$declaration .= "\t" . $clause . "\n";
1211e2c54635SPaolo Bonzini		$level++ if ($clause =~ m/(\{)/ && !($clause =~m/\}/));
1212e2c54635SPaolo Bonzini	}
1213e2c54635SPaolo Bonzini	output_declaration($declaration_name,
1214e2c54635SPaolo Bonzini			   'struct',
1215e2c54635SPaolo Bonzini			   {'struct' => $declaration_name,
1216e2c54635SPaolo Bonzini			    'module' => $modulename,
1217e2c54635SPaolo Bonzini			    'definition' => $declaration,
1218e2c54635SPaolo Bonzini			    'parameterlist' => \@parameterlist,
1219e2c54635SPaolo Bonzini			    'parameterdescs' => \%parameterdescs,
1220e2c54635SPaolo Bonzini			    'parametertypes' => \%parametertypes,
1221e2c54635SPaolo Bonzini			    'sectionlist' => \@sectionlist,
1222e2c54635SPaolo Bonzini			    'sections' => \%sections,
1223e2c54635SPaolo Bonzini			    'purpose' => $declaration_purpose,
1224e2c54635SPaolo Bonzini			    'type' => $decl_type
1225e2c54635SPaolo Bonzini			   });
1226e2c54635SPaolo Bonzini    }
1227e2c54635SPaolo Bonzini    else {
1228e2c54635SPaolo Bonzini	print STDERR "${file}:$.: error: Cannot parse struct or union!\n";
1229e2c54635SPaolo Bonzini	++$errors;
1230e2c54635SPaolo Bonzini    }
1231e2c54635SPaolo Bonzini}
1232e2c54635SPaolo Bonzini
1233e2c54635SPaolo Bonzini
1234e2c54635SPaolo Bonzinisub show_warnings($$) {
1235e2c54635SPaolo Bonzini	my $functype = shift;
1236e2c54635SPaolo Bonzini	my $name = shift;
1237e2c54635SPaolo Bonzini
1238e2c54635SPaolo Bonzini	return 1 if ($output_selection == OUTPUT_ALL);
1239e2c54635SPaolo Bonzini
1240e2c54635SPaolo Bonzini	if ($output_selection == OUTPUT_EXPORTED) {
1241e2c54635SPaolo Bonzini		if (defined($function_table{$name})) {
1242e2c54635SPaolo Bonzini			return 1;
1243e2c54635SPaolo Bonzini		} else {
1244e2c54635SPaolo Bonzini			return 0;
1245e2c54635SPaolo Bonzini		}
1246e2c54635SPaolo Bonzini	}
1247e2c54635SPaolo Bonzini        if ($output_selection == OUTPUT_INTERNAL) {
1248e2c54635SPaolo Bonzini		if (!($functype eq "function" && defined($function_table{$name}))) {
1249e2c54635SPaolo Bonzini			return 1;
1250e2c54635SPaolo Bonzini		} else {
1251e2c54635SPaolo Bonzini			return 0;
1252e2c54635SPaolo Bonzini		}
1253e2c54635SPaolo Bonzini	}
1254e2c54635SPaolo Bonzini	if ($output_selection == OUTPUT_INCLUDE) {
1255e2c54635SPaolo Bonzini		if (defined($function_table{$name})) {
1256e2c54635SPaolo Bonzini			return 1;
1257e2c54635SPaolo Bonzini		} else {
1258e2c54635SPaolo Bonzini			return 0;
1259e2c54635SPaolo Bonzini		}
1260e2c54635SPaolo Bonzini	}
1261e2c54635SPaolo Bonzini	if ($output_selection == OUTPUT_EXCLUDE) {
1262e2c54635SPaolo Bonzini		if (!defined($function_table{$name})) {
1263e2c54635SPaolo Bonzini			return 1;
1264e2c54635SPaolo Bonzini		} else {
1265e2c54635SPaolo Bonzini			return 0;
1266e2c54635SPaolo Bonzini		}
1267e2c54635SPaolo Bonzini	}
1268e2c54635SPaolo Bonzini	die("Please add the new output type at show_warnings()");
1269e2c54635SPaolo Bonzini}
1270e2c54635SPaolo Bonzini
1271e2c54635SPaolo Bonzinisub dump_enum($$) {
1272e2c54635SPaolo Bonzini    my $x = shift;
1273e2c54635SPaolo Bonzini    my $file = shift;
1274e2c54635SPaolo Bonzini
1275e2c54635SPaolo Bonzini    $x =~ s@/\*.*?\*/@@gos;	# strip comments.
1276e2c54635SPaolo Bonzini    # strip #define macros inside enums
1277e2c54635SPaolo Bonzini    $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos;
1278e2c54635SPaolo Bonzini
1279e2c54635SPaolo Bonzini    if ($x =~ /enum\s+(\w*)\s*\{(.*)\}/) {
1280e2c54635SPaolo Bonzini	$declaration_name = $1;
1281e2c54635SPaolo Bonzini	my $members = $2;
1282e2c54635SPaolo Bonzini	my %_members;
1283e2c54635SPaolo Bonzini
1284e2c54635SPaolo Bonzini	$members =~ s/\s+$//;
1285e2c54635SPaolo Bonzini
1286e2c54635SPaolo Bonzini	foreach my $arg (split ',', $members) {
1287e2c54635SPaolo Bonzini	    $arg =~ s/^\s*(\w+).*/$1/;
1288e2c54635SPaolo Bonzini	    push @parameterlist, $arg;
1289e2c54635SPaolo Bonzini	    if (!$parameterdescs{$arg}) {
1290e2c54635SPaolo Bonzini		$parameterdescs{$arg} = $undescribed;
1291e2c54635SPaolo Bonzini	        if (show_warnings("enum", $declaration_name)) {
1292e2c54635SPaolo Bonzini			print STDERR "${file}:$.: warning: Enum value '$arg' not described in enum '$declaration_name'\n";
1293e2c54635SPaolo Bonzini		}
1294e2c54635SPaolo Bonzini	    }
1295e2c54635SPaolo Bonzini	    $_members{$arg} = 1;
1296e2c54635SPaolo Bonzini	}
1297e2c54635SPaolo Bonzini
1298e2c54635SPaolo Bonzini	while (my ($k, $v) = each %parameterdescs) {
1299e2c54635SPaolo Bonzini	    if (!exists($_members{$k})) {
1300e2c54635SPaolo Bonzini	        if (show_warnings("enum", $declaration_name)) {
1301e2c54635SPaolo Bonzini		     print STDERR "${file}:$.: warning: Excess enum value '$k' description in '$declaration_name'\n";
1302e2c54635SPaolo Bonzini		}
1303e2c54635SPaolo Bonzini	    }
1304e2c54635SPaolo Bonzini        }
1305e2c54635SPaolo Bonzini
1306e2c54635SPaolo Bonzini	output_declaration($declaration_name,
1307e2c54635SPaolo Bonzini			   'enum',
1308e2c54635SPaolo Bonzini			   {'enum' => $declaration_name,
1309e2c54635SPaolo Bonzini			    'module' => $modulename,
1310e2c54635SPaolo Bonzini			    'parameterlist' => \@parameterlist,
1311e2c54635SPaolo Bonzini			    'parameterdescs' => \%parameterdescs,
1312e2c54635SPaolo Bonzini			    'sectionlist' => \@sectionlist,
1313e2c54635SPaolo Bonzini			    'sections' => \%sections,
1314e2c54635SPaolo Bonzini			    'purpose' => $declaration_purpose
1315e2c54635SPaolo Bonzini			   });
1316e2c54635SPaolo Bonzini    }
1317e2c54635SPaolo Bonzini    else {
1318e2c54635SPaolo Bonzini	print STDERR "${file}:$.: error: Cannot parse enum!\n";
1319e2c54635SPaolo Bonzini	++$errors;
1320e2c54635SPaolo Bonzini    }
1321e2c54635SPaolo Bonzini}
1322e2c54635SPaolo Bonzini
1323e2c54635SPaolo Bonzinisub dump_typedef($$) {
1324e2c54635SPaolo Bonzini    my $x = shift;
1325e2c54635SPaolo Bonzini    my $file = shift;
1326e2c54635SPaolo Bonzini
1327e2c54635SPaolo Bonzini    $x =~ s@/\*.*?\*/@@gos;	# strip comments.
1328e2c54635SPaolo Bonzini
1329e2c54635SPaolo Bonzini    # Parse function prototypes
13303cd3c519SEduardo Habkost    if ($x =~ /typedef\s+(\w+\s*\**)\s*\(\*?\s*(\w\S+)\s*\)\s*\((.*)\);/ ||
133119ab6044SEduardo Habkost	$x =~ /typedef\s+(\w+\s*\**)\s*(\w\S+)\s*\s*\((.*)\);/) {
1332e2c54635SPaolo Bonzini
1333e2c54635SPaolo Bonzini	# Function typedefs
1334e2c54635SPaolo Bonzini	$return_type = $1;
1335e2c54635SPaolo Bonzini	$declaration_name = $2;
1336e2c54635SPaolo Bonzini	my $args = $3;
1337e2c54635SPaolo Bonzini
1338e2c54635SPaolo Bonzini	create_parameterlist($args, ',', $file, $declaration_name);
1339e2c54635SPaolo Bonzini
1340e2c54635SPaolo Bonzini	output_declaration($declaration_name,
1341e2c54635SPaolo Bonzini			   'function',
1342e2c54635SPaolo Bonzini			   {'function' => $declaration_name,
1343e2c54635SPaolo Bonzini			    'typedef' => 1,
1344e2c54635SPaolo Bonzini			    'module' => $modulename,
1345e2c54635SPaolo Bonzini			    'functiontype' => $return_type,
1346e2c54635SPaolo Bonzini			    'parameterlist' => \@parameterlist,
1347e2c54635SPaolo Bonzini			    'parameterdescs' => \%parameterdescs,
1348e2c54635SPaolo Bonzini			    'parametertypes' => \%parametertypes,
1349e2c54635SPaolo Bonzini			    'sectionlist' => \@sectionlist,
1350e2c54635SPaolo Bonzini			    'sections' => \%sections,
1351e2c54635SPaolo Bonzini			    'purpose' => $declaration_purpose
1352e2c54635SPaolo Bonzini			   });
1353e2c54635SPaolo Bonzini	return;
1354e2c54635SPaolo Bonzini    }
1355e2c54635SPaolo Bonzini
1356e2c54635SPaolo Bonzini    while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
1357e2c54635SPaolo Bonzini	$x =~ s/\(*.\)\s*;$/;/;
1358e2c54635SPaolo Bonzini	$x =~ s/\[*.\]\s*;$/;/;
1359e2c54635SPaolo Bonzini    }
1360e2c54635SPaolo Bonzini
1361e2c54635SPaolo Bonzini    if ($x =~ /typedef.*\s+(\w+)\s*;/) {
1362e2c54635SPaolo Bonzini	$declaration_name = $1;
1363e2c54635SPaolo Bonzini
1364e2c54635SPaolo Bonzini	output_declaration($declaration_name,
1365e2c54635SPaolo Bonzini			   'typedef',
1366e2c54635SPaolo Bonzini			   {'typedef' => $declaration_name,
1367e2c54635SPaolo Bonzini			    'module' => $modulename,
1368e2c54635SPaolo Bonzini			    'sectionlist' => \@sectionlist,
1369e2c54635SPaolo Bonzini			    'sections' => \%sections,
1370e2c54635SPaolo Bonzini			    'purpose' => $declaration_purpose
1371e2c54635SPaolo Bonzini			   });
1372e2c54635SPaolo Bonzini    }
1373e2c54635SPaolo Bonzini    else {
1374e2c54635SPaolo Bonzini	print STDERR "${file}:$.: error: Cannot parse typedef!\n";
1375e2c54635SPaolo Bonzini	++$errors;
1376e2c54635SPaolo Bonzini    }
1377e2c54635SPaolo Bonzini}
1378e2c54635SPaolo Bonzini
1379e2c54635SPaolo Bonzinisub save_struct_actual($) {
1380e2c54635SPaolo Bonzini    my $actual = shift;
1381e2c54635SPaolo Bonzini
1382e2c54635SPaolo Bonzini    # strip all spaces from the actual param so that it looks like one string item
1383e2c54635SPaolo Bonzini    $actual =~ s/\s*//g;
1384e2c54635SPaolo Bonzini    $struct_actual = $struct_actual . $actual . " ";
1385e2c54635SPaolo Bonzini}
1386e2c54635SPaolo Bonzini
1387e2c54635SPaolo Bonzinisub create_parameterlist($$$$) {
1388e2c54635SPaolo Bonzini    my $args = shift;
1389e2c54635SPaolo Bonzini    my $splitter = shift;
1390e2c54635SPaolo Bonzini    my $file = shift;
1391e2c54635SPaolo Bonzini    my $declaration_name = shift;
1392e2c54635SPaolo Bonzini    my $type;
1393e2c54635SPaolo Bonzini    my $param;
1394e2c54635SPaolo Bonzini
1395e2c54635SPaolo Bonzini    # temporarily replace commas inside function pointer definition
1396e2c54635SPaolo Bonzini    while ($args =~ /(\([^\),]+),/) {
1397e2c54635SPaolo Bonzini	$args =~ s/(\([^\),]+),/$1#/g;
1398e2c54635SPaolo Bonzini    }
1399e2c54635SPaolo Bonzini
1400e2c54635SPaolo Bonzini    foreach my $arg (split($splitter, $args)) {
1401e2c54635SPaolo Bonzini	# strip comments
1402e2c54635SPaolo Bonzini	$arg =~ s/\/\*.*\*\///;
1403e2c54635SPaolo Bonzini	# strip leading/trailing spaces
1404e2c54635SPaolo Bonzini	$arg =~ s/^\s*//;
1405e2c54635SPaolo Bonzini	$arg =~ s/\s*$//;
1406e2c54635SPaolo Bonzini	$arg =~ s/\s+/ /;
1407e2c54635SPaolo Bonzini
1408e2c54635SPaolo Bonzini	if ($arg =~ /^#/) {
1409e2c54635SPaolo Bonzini	    # Treat preprocessor directive as a typeless variable just to fill
1410e2c54635SPaolo Bonzini	    # corresponding data structures "correctly". Catch it later in
1411e2c54635SPaolo Bonzini	    # output_* subs.
1412e2c54635SPaolo Bonzini	    push_parameter($arg, "", $file);
1413e2c54635SPaolo Bonzini	} elsif ($arg =~ m/\(.+\)\s*\(/) {
1414e2c54635SPaolo Bonzini	    # pointer-to-function
1415e2c54635SPaolo Bonzini	    $arg =~ tr/#/,/;
1416e2c54635SPaolo Bonzini	    $arg =~ m/[^\(]+\(\*?\s*([\w\.]*)\s*\)/;
1417e2c54635SPaolo Bonzini	    $param = $1;
1418e2c54635SPaolo Bonzini	    $type = $arg;
1419e2c54635SPaolo Bonzini	    $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
1420e2c54635SPaolo Bonzini	    save_struct_actual($param);
1421e2c54635SPaolo Bonzini	    push_parameter($param, $type, $file, $declaration_name);
1422e2c54635SPaolo Bonzini	} elsif ($arg) {
1423e2c54635SPaolo Bonzini	    $arg =~ s/\s*:\s*/:/g;
1424e2c54635SPaolo Bonzini	    $arg =~ s/\s*\[/\[/g;
1425e2c54635SPaolo Bonzini
1426e2c54635SPaolo Bonzini	    my @args = split('\s*,\s*', $arg);
1427e2c54635SPaolo Bonzini	    if ($args[0] =~ m/\*/) {
1428e2c54635SPaolo Bonzini		$args[0] =~ s/(\*+)\s*/ $1/;
1429e2c54635SPaolo Bonzini	    }
1430e2c54635SPaolo Bonzini
1431e2c54635SPaolo Bonzini	    my @first_arg;
1432e2c54635SPaolo Bonzini	    if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
1433e2c54635SPaolo Bonzini		    shift @args;
1434e2c54635SPaolo Bonzini		    push(@first_arg, split('\s+', $1));
1435e2c54635SPaolo Bonzini		    push(@first_arg, $2);
1436e2c54635SPaolo Bonzini	    } else {
1437e2c54635SPaolo Bonzini		    @first_arg = split('\s+', shift @args);
1438e2c54635SPaolo Bonzini	    }
1439e2c54635SPaolo Bonzini
1440e2c54635SPaolo Bonzini	    unshift(@args, pop @first_arg);
1441e2c54635SPaolo Bonzini	    $type = join " ", @first_arg;
1442e2c54635SPaolo Bonzini
1443e2c54635SPaolo Bonzini	    foreach $param (@args) {
1444e2c54635SPaolo Bonzini		if ($param =~ m/^(\*+)\s*(.*)/) {
1445e2c54635SPaolo Bonzini		    save_struct_actual($2);
1446e2c54635SPaolo Bonzini		    push_parameter($2, "$type $1", $file, $declaration_name);
1447e2c54635SPaolo Bonzini		}
1448e2c54635SPaolo Bonzini		elsif ($param =~ m/(.*?):(\d+)/) {
1449e2c54635SPaolo Bonzini		    if ($type ne "") { # skip unnamed bit-fields
1450e2c54635SPaolo Bonzini			save_struct_actual($1);
1451e2c54635SPaolo Bonzini			push_parameter($1, "$type:$2", $file, $declaration_name)
1452e2c54635SPaolo Bonzini		    }
1453e2c54635SPaolo Bonzini		}
1454e2c54635SPaolo Bonzini		else {
1455e2c54635SPaolo Bonzini		    save_struct_actual($param);
1456e2c54635SPaolo Bonzini		    push_parameter($param, $type, $file, $declaration_name);
1457e2c54635SPaolo Bonzini		}
1458e2c54635SPaolo Bonzini	    }
1459e2c54635SPaolo Bonzini	}
1460e2c54635SPaolo Bonzini    }
1461e2c54635SPaolo Bonzini}
1462e2c54635SPaolo Bonzini
1463e2c54635SPaolo Bonzinisub push_parameter($$$$) {
1464e2c54635SPaolo Bonzini	my $param = shift;
1465e2c54635SPaolo Bonzini	my $type = shift;
1466e2c54635SPaolo Bonzini	my $file = shift;
1467e2c54635SPaolo Bonzini	my $declaration_name = shift;
1468e2c54635SPaolo Bonzini
1469e2c54635SPaolo Bonzini	if (($anon_struct_union == 1) && ($type eq "") &&
1470e2c54635SPaolo Bonzini	    ($param eq "}")) {
1471e2c54635SPaolo Bonzini		return;		# ignore the ending }; from anon. struct/union
1472e2c54635SPaolo Bonzini	}
1473e2c54635SPaolo Bonzini
1474e2c54635SPaolo Bonzini	$anon_struct_union = 0;
1475e2c54635SPaolo Bonzini	$param =~ s/[\[\)].*//;
1476e2c54635SPaolo Bonzini
1477e2c54635SPaolo Bonzini	if ($type eq "" && $param =~ /\.\.\.$/)
1478e2c54635SPaolo Bonzini	{
1479e2c54635SPaolo Bonzini	    if (!$param =~ /\w\.\.\.$/) {
1480e2c54635SPaolo Bonzini	      # handles unnamed variable parameters
1481e2c54635SPaolo Bonzini	      $param = "...";
1482e2c54635SPaolo Bonzini	    }
1483*65fb67bfSJonathan Neuschäfer	    elsif ($param =~ /\w\.\.\.$/) {
1484*65fb67bfSJonathan Neuschäfer	      # for named variable parameters of the form `x...`, remove the dots
1485*65fb67bfSJonathan Neuschäfer	      $param =~ s/\.\.\.$//;
1486*65fb67bfSJonathan Neuschäfer	    }
1487e2c54635SPaolo Bonzini	    if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
1488e2c54635SPaolo Bonzini		$parameterdescs{$param} = "variable arguments";
1489e2c54635SPaolo Bonzini	    }
1490e2c54635SPaolo Bonzini	}
1491e2c54635SPaolo Bonzini	elsif ($type eq "" && ($param eq "" or $param eq "void"))
1492e2c54635SPaolo Bonzini	{
1493e2c54635SPaolo Bonzini	    $param="void";
1494e2c54635SPaolo Bonzini	    $parameterdescs{void} = "no arguments";
1495e2c54635SPaolo Bonzini	}
1496e2c54635SPaolo Bonzini	elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
1497e2c54635SPaolo Bonzini	# handle unnamed (anonymous) union or struct:
1498e2c54635SPaolo Bonzini	{
1499e2c54635SPaolo Bonzini		$type = $param;
1500e2c54635SPaolo Bonzini		$param = "{unnamed_" . $param . "}";
1501e2c54635SPaolo Bonzini		$parameterdescs{$param} = "anonymous\n";
1502e2c54635SPaolo Bonzini		$anon_struct_union = 1;
1503e2c54635SPaolo Bonzini	}
1504e2c54635SPaolo Bonzini
1505e2c54635SPaolo Bonzini	# warn if parameter has no description
1506e2c54635SPaolo Bonzini	# (but ignore ones starting with # as these are not parameters
1507e2c54635SPaolo Bonzini	# but inline preprocessor statements);
1508e2c54635SPaolo Bonzini	# Note: It will also ignore void params and unnamed structs/unions
1509e2c54635SPaolo Bonzini	if (!defined $parameterdescs{$param} && $param !~ /^#/) {
1510e2c54635SPaolo Bonzini		$parameterdescs{$param} = $undescribed;
1511e2c54635SPaolo Bonzini
1512e2c54635SPaolo Bonzini	        if (show_warnings($type, $declaration_name) && $param !~ /\./) {
1513e2c54635SPaolo Bonzini			print STDERR
1514e2c54635SPaolo Bonzini			      "${file}:$.: warning: Function parameter or member '$param' not described in '$declaration_name'\n";
1515e2c54635SPaolo Bonzini			++$warnings;
1516e2c54635SPaolo Bonzini		}
1517e2c54635SPaolo Bonzini	}
1518e2c54635SPaolo Bonzini
1519e2c54635SPaolo Bonzini	# strip spaces from $param so that it is one continuous string
1520e2c54635SPaolo Bonzini	# on @parameterlist;
1521e2c54635SPaolo Bonzini	# this fixes a problem where check_sections() cannot find
1522e2c54635SPaolo Bonzini	# a parameter like "addr[6 + 2]" because it actually appears
1523e2c54635SPaolo Bonzini	# as "addr[6", "+", "2]" on the parameter list;
1524e2c54635SPaolo Bonzini	# but it's better to maintain the param string unchanged for output,
1525e2c54635SPaolo Bonzini	# so just weaken the string compare in check_sections() to ignore
1526e2c54635SPaolo Bonzini	# "[blah" in a parameter string;
1527e2c54635SPaolo Bonzini	###$param =~ s/\s*//g;
1528e2c54635SPaolo Bonzini	push @parameterlist, $param;
1529e2c54635SPaolo Bonzini	$type =~ s/\s\s+/ /g;
1530e2c54635SPaolo Bonzini	$parametertypes{$param} = $type;
1531e2c54635SPaolo Bonzini}
1532e2c54635SPaolo Bonzini
1533e2c54635SPaolo Bonzinisub check_sections($$$$$) {
1534e2c54635SPaolo Bonzini	my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck) = @_;
1535e2c54635SPaolo Bonzini	my @sects = split ' ', $sectcheck;
1536e2c54635SPaolo Bonzini	my @prms = split ' ', $prmscheck;
1537e2c54635SPaolo Bonzini	my $err;
1538e2c54635SPaolo Bonzini	my ($px, $sx);
1539e2c54635SPaolo Bonzini	my $prm_clean;		# strip trailing "[array size]" and/or beginning "*"
1540e2c54635SPaolo Bonzini
1541e2c54635SPaolo Bonzini	foreach $sx (0 .. $#sects) {
1542e2c54635SPaolo Bonzini		$err = 1;
1543e2c54635SPaolo Bonzini		foreach $px (0 .. $#prms) {
1544e2c54635SPaolo Bonzini			$prm_clean = $prms[$px];
1545e2c54635SPaolo Bonzini			$prm_clean =~ s/\[.*\]//;
1546e2c54635SPaolo Bonzini			$prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
1547e2c54635SPaolo Bonzini			# ignore array size in a parameter string;
1548e2c54635SPaolo Bonzini			# however, the original param string may contain
1549e2c54635SPaolo Bonzini			# spaces, e.g.:  addr[6 + 2]
1550e2c54635SPaolo Bonzini			# and this appears in @prms as "addr[6" since the
1551e2c54635SPaolo Bonzini			# parameter list is split at spaces;
1552e2c54635SPaolo Bonzini			# hence just ignore "[..." for the sections check;
1553e2c54635SPaolo Bonzini			$prm_clean =~ s/\[.*//;
1554e2c54635SPaolo Bonzini
1555e2c54635SPaolo Bonzini			##$prm_clean =~ s/^\**//;
1556e2c54635SPaolo Bonzini			if ($prm_clean eq $sects[$sx]) {
1557e2c54635SPaolo Bonzini				$err = 0;
1558e2c54635SPaolo Bonzini				last;
1559e2c54635SPaolo Bonzini			}
1560e2c54635SPaolo Bonzini		}
1561e2c54635SPaolo Bonzini		if ($err) {
1562e2c54635SPaolo Bonzini			if ($decl_type eq "function") {
1563e2c54635SPaolo Bonzini				print STDERR "${file}:$.: warning: " .
1564e2c54635SPaolo Bonzini					"Excess function parameter " .
1565e2c54635SPaolo Bonzini					"'$sects[$sx]' " .
1566e2c54635SPaolo Bonzini					"description in '$decl_name'\n";
1567e2c54635SPaolo Bonzini				++$warnings;
1568e2c54635SPaolo Bonzini			}
1569e2c54635SPaolo Bonzini		}
1570e2c54635SPaolo Bonzini	}
1571e2c54635SPaolo Bonzini}
1572e2c54635SPaolo Bonzini
1573e2c54635SPaolo Bonzini##
1574e2c54635SPaolo Bonzini# Checks the section describing the return value of a function.
1575e2c54635SPaolo Bonzinisub check_return_section {
1576e2c54635SPaolo Bonzini        my $file = shift;
1577e2c54635SPaolo Bonzini        my $declaration_name = shift;
1578e2c54635SPaolo Bonzini        my $return_type = shift;
1579e2c54635SPaolo Bonzini
1580e2c54635SPaolo Bonzini        # Ignore an empty return type (It's a macro)
1581e2c54635SPaolo Bonzini        # Ignore functions with a "void" return type. (But don't ignore "void *")
1582e2c54635SPaolo Bonzini        if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) {
1583e2c54635SPaolo Bonzini                return;
1584e2c54635SPaolo Bonzini        }
1585e2c54635SPaolo Bonzini
1586e2c54635SPaolo Bonzini        if (!defined($sections{$section_return}) ||
1587e2c54635SPaolo Bonzini            $sections{$section_return} eq "") {
1588e2c54635SPaolo Bonzini                print STDERR "${file}:$.: warning: " .
1589e2c54635SPaolo Bonzini                        "No description found for return value of " .
1590e2c54635SPaolo Bonzini                        "'$declaration_name'\n";
1591e2c54635SPaolo Bonzini                ++$warnings;
1592e2c54635SPaolo Bonzini        }
1593e2c54635SPaolo Bonzini}
1594e2c54635SPaolo Bonzini
1595e2c54635SPaolo Bonzini##
1596e2c54635SPaolo Bonzini# takes a function prototype and the name of the current file being
1597e2c54635SPaolo Bonzini# processed and spits out all the details stored in the global
1598e2c54635SPaolo Bonzini# arrays/hashes.
1599e2c54635SPaolo Bonzinisub dump_function($$) {
1600e2c54635SPaolo Bonzini    my $prototype = shift;
1601e2c54635SPaolo Bonzini    my $file = shift;
1602e2c54635SPaolo Bonzini    my $noret = 0;
1603e2c54635SPaolo Bonzini
1604e2c54635SPaolo Bonzini    $prototype =~ s/^static +//;
1605e2c54635SPaolo Bonzini    $prototype =~ s/^extern +//;
1606e2c54635SPaolo Bonzini    $prototype =~ s/^asmlinkage +//;
1607e2c54635SPaolo Bonzini    $prototype =~ s/^inline +//;
1608e2c54635SPaolo Bonzini    $prototype =~ s/^__inline__ +//;
1609e2c54635SPaolo Bonzini    $prototype =~ s/^__inline +//;
1610e2c54635SPaolo Bonzini    $prototype =~ s/^__always_inline +//;
1611e2c54635SPaolo Bonzini    $prototype =~ s/^noinline +//;
1612e2c54635SPaolo Bonzini    $prototype =~ s/__init +//;
1613e2c54635SPaolo Bonzini    $prototype =~ s/__init_or_module +//;
1614e2c54635SPaolo Bonzini    $prototype =~ s/__meminit +//;
1615e2c54635SPaolo Bonzini    $prototype =~ s/__must_check +//;
1616e2c54635SPaolo Bonzini    $prototype =~ s/__weak +//;
1617e2c54635SPaolo Bonzini    $prototype =~ s/__sched +//;
1618e2c54635SPaolo Bonzini    $prototype =~ s/__printf\s*\(\s*\d*\s*,\s*\d*\s*\) +//;
1619e2c54635SPaolo Bonzini    my $define = $prototype =~ s/^#\s*define\s+//; #ak added
1620e2c54635SPaolo Bonzini    $prototype =~ s/__attribute__\s*\(\(
1621e2c54635SPaolo Bonzini            (?:
1622e2c54635SPaolo Bonzini                 [\w\s]++          # attribute name
1623e2c54635SPaolo Bonzini                 (?:\([^)]*+\))?   # attribute arguments
1624e2c54635SPaolo Bonzini                 \s*+,?            # optional comma at the end
1625e2c54635SPaolo Bonzini            )+
1626e2c54635SPaolo Bonzini          \)\)\s+//x;
1627e2c54635SPaolo Bonzini
1628e2c54635SPaolo Bonzini    # Yes, this truly is vile.  We are looking for:
1629e2c54635SPaolo Bonzini    # 1. Return type (may be nothing if we're looking at a macro)
1630e2c54635SPaolo Bonzini    # 2. Function name
1631e2c54635SPaolo Bonzini    # 3. Function parameters.
1632e2c54635SPaolo Bonzini    #
1633e2c54635SPaolo Bonzini    # All the while we have to watch out for function pointer parameters
1634e2c54635SPaolo Bonzini    # (which IIRC is what the two sections are for), C types (these
1635e2c54635SPaolo Bonzini    # regexps don't even start to express all the possibilities), and
1636e2c54635SPaolo Bonzini    # so on.
1637e2c54635SPaolo Bonzini    #
1638e2c54635SPaolo Bonzini    # If you mess with these regexps, it's a good idea to check that
1639e2c54635SPaolo Bonzini    # the following functions' documentation still comes out right:
1640e2c54635SPaolo Bonzini    # - parport_register_device (function pointer parameters)
1641d73415a3SStefan Hajnoczi    # - qatomic_set (macro)
1642e2c54635SPaolo Bonzini    # - pci_match_device, __copy_to_user (long return type)
1643e2c54635SPaolo Bonzini
1644e2c54635SPaolo Bonzini    if ($define && $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s+/) {
1645e2c54635SPaolo Bonzini        # This is an object-like macro, it has no return type and no parameter
1646e2c54635SPaolo Bonzini        # list.
1647e2c54635SPaolo Bonzini        # Function-like macros are not allowed to have spaces between
1648e2c54635SPaolo Bonzini        # declaration_name and opening parenthesis (notice the \s+).
1649e2c54635SPaolo Bonzini        $return_type = $1;
1650e2c54635SPaolo Bonzini        $declaration_name = $2;
1651e2c54635SPaolo Bonzini        $noret = 1;
1652e2c54635SPaolo Bonzini    } elsif ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1653e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1654e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1655e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1656e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1657e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1658e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1659e2c54635SPaolo Bonzini	$prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1660e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1661e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1662e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1663e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1664e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1665e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1666e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1667e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1668e2c54635SPaolo Bonzini	$prototype =~ m/^(\w+\s+\w+\s*\*+\s*\w+\s*\*+\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/)  {
1669e2c54635SPaolo Bonzini	$return_type = $1;
1670e2c54635SPaolo Bonzini	$declaration_name = $2;
1671e2c54635SPaolo Bonzini	my $args = $3;
1672e2c54635SPaolo Bonzini
1673e2c54635SPaolo Bonzini	create_parameterlist($args, ',', $file, $declaration_name);
1674e2c54635SPaolo Bonzini    } else {
1675e2c54635SPaolo Bonzini	print STDERR "${file}:$.: warning: cannot understand function prototype: '$prototype'\n";
1676e2c54635SPaolo Bonzini	return;
1677e2c54635SPaolo Bonzini    }
1678e2c54635SPaolo Bonzini
1679e2c54635SPaolo Bonzini	my $prms = join " ", @parameterlist;
1680e2c54635SPaolo Bonzini	check_sections($file, $declaration_name, "function", $sectcheck, $prms);
1681e2c54635SPaolo Bonzini
1682e2c54635SPaolo Bonzini        # This check emits a lot of warnings at the moment, because many
1683e2c54635SPaolo Bonzini        # functions don't have a 'Return' doc section. So until the number
1684e2c54635SPaolo Bonzini        # of warnings goes sufficiently down, the check is only performed in
1685e2c54635SPaolo Bonzini        # verbose mode.
1686e2c54635SPaolo Bonzini        # TODO: always perform the check.
1687e2c54635SPaolo Bonzini        if ($verbose && !$noret) {
1688e2c54635SPaolo Bonzini                check_return_section($file, $declaration_name, $return_type);
1689e2c54635SPaolo Bonzini        }
1690e2c54635SPaolo Bonzini
1691e2c54635SPaolo Bonzini    output_declaration($declaration_name,
1692e2c54635SPaolo Bonzini		       'function',
1693e2c54635SPaolo Bonzini		       {'function' => $declaration_name,
1694e2c54635SPaolo Bonzini			'module' => $modulename,
1695e2c54635SPaolo Bonzini			'functiontype' => $return_type,
1696e2c54635SPaolo Bonzini			'parameterlist' => \@parameterlist,
1697e2c54635SPaolo Bonzini			'parameterdescs' => \%parameterdescs,
1698e2c54635SPaolo Bonzini			'parametertypes' => \%parametertypes,
1699e2c54635SPaolo Bonzini			'sectionlist' => \@sectionlist,
1700e2c54635SPaolo Bonzini			'sections' => \%sections,
1701e2c54635SPaolo Bonzini			'purpose' => $declaration_purpose
1702e2c54635SPaolo Bonzini		       });
1703e2c54635SPaolo Bonzini}
1704e2c54635SPaolo Bonzini
1705e2c54635SPaolo Bonzinisub reset_state {
1706e2c54635SPaolo Bonzini    $function = "";
1707e2c54635SPaolo Bonzini    %parameterdescs = ();
1708e2c54635SPaolo Bonzini    %parametertypes = ();
1709e2c54635SPaolo Bonzini    @parameterlist = ();
1710e2c54635SPaolo Bonzini    %sections = ();
1711e2c54635SPaolo Bonzini    @sectionlist = ();
1712e2c54635SPaolo Bonzini    $sectcheck = "";
1713e2c54635SPaolo Bonzini    $struct_actual = "";
1714e2c54635SPaolo Bonzini    $prototype = "";
1715e2c54635SPaolo Bonzini
1716e2c54635SPaolo Bonzini    $state = STATE_NORMAL;
1717e2c54635SPaolo Bonzini    $inline_doc_state = STATE_INLINE_NA;
1718e2c54635SPaolo Bonzini}
1719e2c54635SPaolo Bonzini
1720e2c54635SPaolo Bonzinisub tracepoint_munge($) {
1721e2c54635SPaolo Bonzini	my $file = shift;
1722e2c54635SPaolo Bonzini	my $tracepointname = 0;
1723e2c54635SPaolo Bonzini	my $tracepointargs = 0;
1724e2c54635SPaolo Bonzini
1725e2c54635SPaolo Bonzini	if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
1726e2c54635SPaolo Bonzini		$tracepointname = $1;
1727e2c54635SPaolo Bonzini	}
1728e2c54635SPaolo Bonzini	if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
1729e2c54635SPaolo Bonzini		$tracepointname = $1;
1730e2c54635SPaolo Bonzini	}
1731e2c54635SPaolo Bonzini	if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
1732e2c54635SPaolo Bonzini		$tracepointname = $2;
1733e2c54635SPaolo Bonzini	}
1734e2c54635SPaolo Bonzini	$tracepointname =~ s/^\s+//; #strip leading whitespace
1735e2c54635SPaolo Bonzini	if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
1736e2c54635SPaolo Bonzini		$tracepointargs = $1;
1737e2c54635SPaolo Bonzini	}
1738e2c54635SPaolo Bonzini	if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
1739e2c54635SPaolo Bonzini		print STDERR "${file}:$.: warning: Unrecognized tracepoint format: \n".
1740e2c54635SPaolo Bonzini			     "$prototype\n";
1741e2c54635SPaolo Bonzini	} else {
1742e2c54635SPaolo Bonzini		$prototype = "static inline void trace_$tracepointname($tracepointargs)";
1743e2c54635SPaolo Bonzini	}
1744e2c54635SPaolo Bonzini}
1745e2c54635SPaolo Bonzini
1746e2c54635SPaolo Bonzinisub syscall_munge() {
1747e2c54635SPaolo Bonzini	my $void = 0;
1748e2c54635SPaolo Bonzini
1749e2c54635SPaolo Bonzini	$prototype =~ s@[\r\n]+@ @gos; # strip newlines/CR's
1750e2c54635SPaolo Bonzini##	if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
1751e2c54635SPaolo Bonzini	if ($prototype =~ m/SYSCALL_DEFINE0/) {
1752e2c54635SPaolo Bonzini		$void = 1;
1753e2c54635SPaolo Bonzini##		$prototype = "long sys_$1(void)";
1754e2c54635SPaolo Bonzini	}
1755e2c54635SPaolo Bonzini
1756e2c54635SPaolo Bonzini	$prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
1757e2c54635SPaolo Bonzini	if ($prototype =~ m/long (sys_.*?),/) {
1758e2c54635SPaolo Bonzini		$prototype =~ s/,/\(/;
1759e2c54635SPaolo Bonzini	} elsif ($void) {
1760e2c54635SPaolo Bonzini		$prototype =~ s/\)/\(void\)/;
1761e2c54635SPaolo Bonzini	}
1762e2c54635SPaolo Bonzini
1763e2c54635SPaolo Bonzini	# now delete all of the odd-number commas in $prototype
1764e2c54635SPaolo Bonzini	# so that arg types & arg names don't have a comma between them
1765e2c54635SPaolo Bonzini	my $count = 0;
1766e2c54635SPaolo Bonzini	my $len = length($prototype);
1767e2c54635SPaolo Bonzini	if ($void) {
1768e2c54635SPaolo Bonzini		$len = 0;	# skip the for-loop
1769e2c54635SPaolo Bonzini	}
1770e2c54635SPaolo Bonzini	for (my $ix = 0; $ix < $len; $ix++) {
1771e2c54635SPaolo Bonzini		if (substr($prototype, $ix, 1) eq ',') {
1772e2c54635SPaolo Bonzini			$count++;
1773e2c54635SPaolo Bonzini			if ($count % 2 == 1) {
1774e2c54635SPaolo Bonzini				substr($prototype, $ix, 1) = ' ';
1775e2c54635SPaolo Bonzini			}
1776e2c54635SPaolo Bonzini		}
1777e2c54635SPaolo Bonzini	}
1778e2c54635SPaolo Bonzini}
1779e2c54635SPaolo Bonzini
1780e2c54635SPaolo Bonzinisub process_proto_function($$) {
1781e2c54635SPaolo Bonzini    my $x = shift;
1782e2c54635SPaolo Bonzini    my $file = shift;
1783e2c54635SPaolo Bonzini
1784e2c54635SPaolo Bonzini    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1785e2c54635SPaolo Bonzini
1786e2c54635SPaolo Bonzini    if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
1787e2c54635SPaolo Bonzini	# do nothing
1788e2c54635SPaolo Bonzini    }
1789e2c54635SPaolo Bonzini    elsif ($x =~ /([^\{]*)/) {
1790e2c54635SPaolo Bonzini	$prototype .= $1;
1791e2c54635SPaolo Bonzini    }
1792e2c54635SPaolo Bonzini
1793e2c54635SPaolo Bonzini    if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
1794e2c54635SPaolo Bonzini	$prototype =~ s@/\*.*?\*/@@gos;	# strip comments.
1795e2c54635SPaolo Bonzini	$prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1796e2c54635SPaolo Bonzini	$prototype =~ s@^\s+@@gos; # strip leading spaces
1797e2c54635SPaolo Bonzini	if ($prototype =~ /SYSCALL_DEFINE/) {
1798e2c54635SPaolo Bonzini		syscall_munge();
1799e2c54635SPaolo Bonzini	}
1800e2c54635SPaolo Bonzini	if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
1801e2c54635SPaolo Bonzini	    $prototype =~ /DEFINE_SINGLE_EVENT/)
1802e2c54635SPaolo Bonzini	{
1803e2c54635SPaolo Bonzini		tracepoint_munge($file);
1804e2c54635SPaolo Bonzini	}
1805e2c54635SPaolo Bonzini	dump_function($prototype, $file);
1806e2c54635SPaolo Bonzini	reset_state();
1807e2c54635SPaolo Bonzini    }
1808e2c54635SPaolo Bonzini}
1809e2c54635SPaolo Bonzini
1810e2c54635SPaolo Bonzinisub process_proto_type($$) {
1811e2c54635SPaolo Bonzini    my $x = shift;
1812e2c54635SPaolo Bonzini    my $file = shift;
1813e2c54635SPaolo Bonzini
1814e2c54635SPaolo Bonzini    $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1815e2c54635SPaolo Bonzini    $x =~ s@^\s+@@gos; # strip leading spaces
1816e2c54635SPaolo Bonzini    $x =~ s@\s+$@@gos; # strip trailing spaces
1817e2c54635SPaolo Bonzini    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1818e2c54635SPaolo Bonzini
1819e2c54635SPaolo Bonzini    if ($x =~ /^#/) {
1820e2c54635SPaolo Bonzini	# To distinguish preprocessor directive from regular declaration later.
1821e2c54635SPaolo Bonzini	$x .= ";";
1822e2c54635SPaolo Bonzini    }
1823e2c54635SPaolo Bonzini
1824e2c54635SPaolo Bonzini    while (1) {
1825e2c54635SPaolo Bonzini	if ( $x =~ /([^\{\};]*)([\{\};])(.*)/ ) {
1826e2c54635SPaolo Bonzini            if( length $prototype ) {
1827e2c54635SPaolo Bonzini                $prototype .= " "
1828e2c54635SPaolo Bonzini            }
1829e2c54635SPaolo Bonzini	    $prototype .= $1 . $2;
1830e2c54635SPaolo Bonzini	    ($2 eq '{') && $brcount++;
1831e2c54635SPaolo Bonzini	    ($2 eq '}') && $brcount--;
1832e2c54635SPaolo Bonzini	    if (($2 eq ';') && ($brcount == 0)) {
1833e2c54635SPaolo Bonzini		dump_declaration($prototype, $file);
1834e2c54635SPaolo Bonzini		reset_state();
1835e2c54635SPaolo Bonzini		last;
1836e2c54635SPaolo Bonzini	    }
1837e2c54635SPaolo Bonzini	    $x = $3;
1838e2c54635SPaolo Bonzini	} else {
1839e2c54635SPaolo Bonzini	    $prototype .= $x;
1840e2c54635SPaolo Bonzini	    last;
1841e2c54635SPaolo Bonzini	}
1842e2c54635SPaolo Bonzini    }
1843e2c54635SPaolo Bonzini}
1844e2c54635SPaolo Bonzini
1845e2c54635SPaolo Bonzini
1846e2c54635SPaolo Bonzinisub map_filename($) {
1847e2c54635SPaolo Bonzini    my $file;
1848e2c54635SPaolo Bonzini    my ($orig_file) = @_;
1849e2c54635SPaolo Bonzini
1850e2c54635SPaolo Bonzini    if (defined($ENV{'SRCTREE'})) {
1851e2c54635SPaolo Bonzini	$file = "$ENV{'SRCTREE'}" . "/" . $orig_file;
1852e2c54635SPaolo Bonzini    } else {
1853e2c54635SPaolo Bonzini	$file = $orig_file;
1854e2c54635SPaolo Bonzini    }
1855e2c54635SPaolo Bonzini
1856e2c54635SPaolo Bonzini    if (defined($source_map{$file})) {
1857e2c54635SPaolo Bonzini	$file = $source_map{$file};
1858e2c54635SPaolo Bonzini    }
1859e2c54635SPaolo Bonzini
1860e2c54635SPaolo Bonzini    return $file;
1861e2c54635SPaolo Bonzini}
1862e2c54635SPaolo Bonzini
1863e2c54635SPaolo Bonzinisub process_export_file($) {
1864e2c54635SPaolo Bonzini    my ($orig_file) = @_;
1865e2c54635SPaolo Bonzini    my $file = map_filename($orig_file);
1866e2c54635SPaolo Bonzini
1867e2c54635SPaolo Bonzini    if (!open(IN,"<$file")) {
1868e2c54635SPaolo Bonzini	print STDERR "Error: Cannot open file $file\n";
1869e2c54635SPaolo Bonzini	++$errors;
1870e2c54635SPaolo Bonzini	return;
1871e2c54635SPaolo Bonzini    }
1872e2c54635SPaolo Bonzini
1873e2c54635SPaolo Bonzini    while (<IN>) {
1874e2c54635SPaolo Bonzini	if (/$export_symbol/) {
1875e2c54635SPaolo Bonzini	    $function_table{$2} = 1;
1876e2c54635SPaolo Bonzini	}
1877e2c54635SPaolo Bonzini    }
1878e2c54635SPaolo Bonzini
1879e2c54635SPaolo Bonzini    close(IN);
1880e2c54635SPaolo Bonzini}
1881e2c54635SPaolo Bonzini
1882e2c54635SPaolo Bonzini#
1883e2c54635SPaolo Bonzini# Parsers for the various processing states.
1884e2c54635SPaolo Bonzini#
1885e2c54635SPaolo Bonzini# STATE_NORMAL: looking for the /** to begin everything.
1886e2c54635SPaolo Bonzini#
1887e2c54635SPaolo Bonzinisub process_normal() {
1888e2c54635SPaolo Bonzini    if (/$doc_start/o) {
1889e2c54635SPaolo Bonzini	$state = STATE_NAME;	# next line is always the function name
1890e2c54635SPaolo Bonzini	$in_doc_sect = 0;
1891e2c54635SPaolo Bonzini	$declaration_start_line = $. + 1;
1892e2c54635SPaolo Bonzini    }
1893e2c54635SPaolo Bonzini}
1894e2c54635SPaolo Bonzini
1895e2c54635SPaolo Bonzini#
1896e2c54635SPaolo Bonzini# STATE_NAME: Looking for the "name - description" line
1897e2c54635SPaolo Bonzini#
1898e2c54635SPaolo Bonzinisub process_name($$) {
1899e2c54635SPaolo Bonzini    my $file = shift;
1900e2c54635SPaolo Bonzini    my $identifier;
1901e2c54635SPaolo Bonzini    my $descr;
1902e2c54635SPaolo Bonzini
1903e2c54635SPaolo Bonzini    if (/$doc_block/o) {
1904e2c54635SPaolo Bonzini	$state = STATE_DOCBLOCK;
1905e2c54635SPaolo Bonzini	$contents = "";
1906e2c54635SPaolo Bonzini	$new_start_line = $. + 1;
1907e2c54635SPaolo Bonzini
1908e2c54635SPaolo Bonzini	if ( $1 eq "" ) {
1909e2c54635SPaolo Bonzini	    $section = $section_intro;
1910e2c54635SPaolo Bonzini	} else {
1911e2c54635SPaolo Bonzini	    $section = $1;
1912e2c54635SPaolo Bonzini	}
1913e2c54635SPaolo Bonzini    }
1914e2c54635SPaolo Bonzini    elsif (/$doc_decl/o) {
1915e2c54635SPaolo Bonzini	$identifier = $1;
19164cf41794SPaolo Bonzini	if (/\s*([\w\s]+?)(\s*-|:)/) {
1917e2c54635SPaolo Bonzini	    $identifier = $1;
1918e2c54635SPaolo Bonzini	}
1919e2c54635SPaolo Bonzini
1920e2c54635SPaolo Bonzini	$state = STATE_BODY;
1921e2c54635SPaolo Bonzini	# if there's no @param blocks need to set up default section
1922e2c54635SPaolo Bonzini	# here
1923e2c54635SPaolo Bonzini	$contents = "";
1924e2c54635SPaolo Bonzini	$section = $section_default;
1925e2c54635SPaolo Bonzini	$new_start_line = $. + 1;
19264cf41794SPaolo Bonzini	if (/[-:](.*)/) {
1927e2c54635SPaolo Bonzini	    # strip leading/trailing/multiple spaces
1928e2c54635SPaolo Bonzini	    $descr= $1;
1929e2c54635SPaolo Bonzini	    $descr =~ s/^\s*//;
1930e2c54635SPaolo Bonzini	    $descr =~ s/\s*$//;
1931e2c54635SPaolo Bonzini	    $descr =~ s/\s+/ /g;
1932e2c54635SPaolo Bonzini	    $declaration_purpose = $descr;
1933e2c54635SPaolo Bonzini	    $state = STATE_BODY_MAYBE;
1934e2c54635SPaolo Bonzini	} else {
1935e2c54635SPaolo Bonzini	    $declaration_purpose = "";
1936e2c54635SPaolo Bonzini	}
1937e2c54635SPaolo Bonzini
1938e2c54635SPaolo Bonzini	if (($declaration_purpose eq "") && $verbose) {
1939e2c54635SPaolo Bonzini	    print STDERR "${file}:$.: warning: missing initial short description on line:\n";
1940e2c54635SPaolo Bonzini	    print STDERR $_;
1941e2c54635SPaolo Bonzini	    ++$warnings;
1942e2c54635SPaolo Bonzini	}
1943e2c54635SPaolo Bonzini
1944eb4c9775SEduardo Habkost	if ($identifier =~ m/^struct\b/) {
1945e2c54635SPaolo Bonzini	    $decl_type = 'struct';
1946e2c54635SPaolo Bonzini	} elsif ($identifier =~ m/^union\b/) {
1947e2c54635SPaolo Bonzini	    $decl_type = 'union';
1948e2c54635SPaolo Bonzini	} elsif ($identifier =~ m/^enum\b/) {
1949e2c54635SPaolo Bonzini	    $decl_type = 'enum';
1950e2c54635SPaolo Bonzini	} elsif ($identifier =~ m/^typedef\b/) {
1951e2c54635SPaolo Bonzini	    $decl_type = 'typedef';
1952e2c54635SPaolo Bonzini	} else {
1953e2c54635SPaolo Bonzini	    $decl_type = 'function';
1954e2c54635SPaolo Bonzini	}
1955e2c54635SPaolo Bonzini
1956e2c54635SPaolo Bonzini	if ($verbose) {
1957e2c54635SPaolo Bonzini	    print STDERR "${file}:$.: info: Scanning doc for $identifier\n";
1958e2c54635SPaolo Bonzini	}
1959e2c54635SPaolo Bonzini    } else {
1960e2c54635SPaolo Bonzini	print STDERR "${file}:$.: warning: Cannot understand $_ on line $.",
1961e2c54635SPaolo Bonzini	    " - I thought it was a doc line\n";
1962e2c54635SPaolo Bonzini	++$warnings;
1963e2c54635SPaolo Bonzini	$state = STATE_NORMAL;
1964e2c54635SPaolo Bonzini    }
1965e2c54635SPaolo Bonzini}
1966e2c54635SPaolo Bonzini
1967e2c54635SPaolo Bonzini
1968e2c54635SPaolo Bonzini#
1969e2c54635SPaolo Bonzini# STATE_BODY and STATE_BODY_MAYBE: the bulk of a kerneldoc comment.
1970e2c54635SPaolo Bonzini#
1971e2c54635SPaolo Bonzinisub process_body($$) {
1972e2c54635SPaolo Bonzini    my $file = shift;
1973e2c54635SPaolo Bonzini
1974*65fb67bfSJonathan Neuschäfer    # Until all named variable macro parameters are
1975*65fb67bfSJonathan Neuschäfer    # documented using the bare name (`x`) rather than with
1976*65fb67bfSJonathan Neuschäfer    # dots (`x...`), strip the dots:
1977*65fb67bfSJonathan Neuschäfer    if ($section =~ /\w\.\.\.$/) {
1978*65fb67bfSJonathan Neuschäfer	$section =~ s/\.\.\.$//;
1979*65fb67bfSJonathan Neuschäfer
1980*65fb67bfSJonathan Neuschäfer	if ($verbose) {
1981*65fb67bfSJonathan Neuschäfer	    print STDERR "${file}:$.: warning: Variable macro arguments should be documented without dots\n";
1982*65fb67bfSJonathan Neuschäfer	    ++$warnings;
1983*65fb67bfSJonathan Neuschäfer	}
1984*65fb67bfSJonathan Neuschäfer    }
1985*65fb67bfSJonathan Neuschäfer
1986e2c54635SPaolo Bonzini    if (/$doc_sect/i) { # case insensitive for supported section names
1987e2c54635SPaolo Bonzini	$newsection = $1;
1988e2c54635SPaolo Bonzini	$newcontents = $2;
1989e2c54635SPaolo Bonzini
1990e2c54635SPaolo Bonzini	# map the supported section names to the canonical names
1991e2c54635SPaolo Bonzini	if ($newsection =~ m/^description$/i) {
1992e2c54635SPaolo Bonzini	    $newsection = $section_default;
1993e2c54635SPaolo Bonzini	} elsif ($newsection =~ m/^context$/i) {
1994e2c54635SPaolo Bonzini	    $newsection = $section_context;
1995e2c54635SPaolo Bonzini	} elsif ($newsection =~ m/^returns?$/i) {
1996e2c54635SPaolo Bonzini	    $newsection = $section_return;
1997e2c54635SPaolo Bonzini	} elsif ($newsection =~ m/^\@return$/) {
1998e2c54635SPaolo Bonzini	    # special: @return is a section, not a param description
1999e2c54635SPaolo Bonzini	    $newsection = $section_return;
2000e2c54635SPaolo Bonzini	}
2001e2c54635SPaolo Bonzini
2002e2c54635SPaolo Bonzini	if (($contents ne "") && ($contents ne "\n")) {
2003e2c54635SPaolo Bonzini	    if (!$in_doc_sect && $verbose) {
2004e2c54635SPaolo Bonzini		print STDERR "${file}:$.: warning: contents before sections\n";
2005e2c54635SPaolo Bonzini		++$warnings;
2006e2c54635SPaolo Bonzini	    }
2007e2c54635SPaolo Bonzini	    dump_section($file, $section, $contents);
2008e2c54635SPaolo Bonzini	    $section = $section_default;
2009e2c54635SPaolo Bonzini	}
2010e2c54635SPaolo Bonzini
2011e2c54635SPaolo Bonzini	$in_doc_sect = 1;
2012e2c54635SPaolo Bonzini	$state = STATE_BODY;
2013e2c54635SPaolo Bonzini	$contents = $newcontents;
2014e2c54635SPaolo Bonzini	$new_start_line = $.;
2015e2c54635SPaolo Bonzini	while (substr($contents, 0, 1) eq " ") {
2016e2c54635SPaolo Bonzini	    $contents = substr($contents, 1);
2017e2c54635SPaolo Bonzini	}
2018e2c54635SPaolo Bonzini	if ($contents ne "") {
2019e2c54635SPaolo Bonzini	    $contents .= "\n";
2020e2c54635SPaolo Bonzini	}
2021e2c54635SPaolo Bonzini	$section = $newsection;
2022e2c54635SPaolo Bonzini	$leading_space = undef;
2023e2c54635SPaolo Bonzini    } elsif (/$doc_end/) {
2024e2c54635SPaolo Bonzini	if (($contents ne "") && ($contents ne "\n")) {
2025e2c54635SPaolo Bonzini	    dump_section($file, $section, $contents);
2026e2c54635SPaolo Bonzini	    $section = $section_default;
2027e2c54635SPaolo Bonzini	    $contents = "";
2028e2c54635SPaolo Bonzini	}
2029e2c54635SPaolo Bonzini	# look for doc_com + <text> + doc_end:
2030e2c54635SPaolo Bonzini	if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
2031e2c54635SPaolo Bonzini	    print STDERR "${file}:$.: warning: suspicious ending line: $_";
2032e2c54635SPaolo Bonzini	    ++$warnings;
2033e2c54635SPaolo Bonzini	}
2034e2c54635SPaolo Bonzini
2035e2c54635SPaolo Bonzini	$prototype = "";
2036e2c54635SPaolo Bonzini	$state = STATE_PROTO;
2037e2c54635SPaolo Bonzini	$brcount = 0;
2038e2c54635SPaolo Bonzini    } elsif (/$doc_content/) {
2039e2c54635SPaolo Bonzini	# miguel-style comment kludge, look for blank lines after
2040e2c54635SPaolo Bonzini	# @parameter line to signify start of description
2041e2c54635SPaolo Bonzini	if ($1 eq "") {
2042e2c54635SPaolo Bonzini	    if ($section =~ m/^@/ || $section eq $section_context) {
2043e2c54635SPaolo Bonzini		dump_section($file, $section, $contents);
2044e2c54635SPaolo Bonzini		$section = $section_default;
2045e2c54635SPaolo Bonzini		$contents = "";
2046e2c54635SPaolo Bonzini		$new_start_line = $.;
2047e2c54635SPaolo Bonzini	    } else {
2048e2c54635SPaolo Bonzini		$contents .= "\n";
2049e2c54635SPaolo Bonzini	    }
2050e2c54635SPaolo Bonzini	    $state = STATE_BODY;
2051e2c54635SPaolo Bonzini	} elsif ($state == STATE_BODY_MAYBE) {
2052e2c54635SPaolo Bonzini	    # Continued declaration purpose
2053e2c54635SPaolo Bonzini	    chomp($declaration_purpose);
2054e2c54635SPaolo Bonzini	    $declaration_purpose .= " " . $1;
2055e2c54635SPaolo Bonzini	    $declaration_purpose =~ s/\s+/ /g;
2056e2c54635SPaolo Bonzini	} else {
2057e2c54635SPaolo Bonzini	    my $cont = $1;
2058e2c54635SPaolo Bonzini	    if ($section =~ m/^@/ || $section eq $section_context) {
2059e2c54635SPaolo Bonzini		if (!defined $leading_space) {
2060e2c54635SPaolo Bonzini		    if ($cont =~ m/^(\s+)/) {
2061e2c54635SPaolo Bonzini			$leading_space = $1;
2062e2c54635SPaolo Bonzini		    } else {
2063e2c54635SPaolo Bonzini			$leading_space = "";
2064e2c54635SPaolo Bonzini		    }
2065e2c54635SPaolo Bonzini		}
2066e2c54635SPaolo Bonzini		$cont =~ s/^$leading_space//;
2067e2c54635SPaolo Bonzini	    }
2068e2c54635SPaolo Bonzini	    $contents .= $cont . "\n";
2069e2c54635SPaolo Bonzini	}
2070e2c54635SPaolo Bonzini    } else {
2071e2c54635SPaolo Bonzini	# i dont know - bad line?  ignore.
2072e2c54635SPaolo Bonzini	print STDERR "${file}:$.: warning: bad line: $_";
2073e2c54635SPaolo Bonzini	++$warnings;
2074e2c54635SPaolo Bonzini    }
2075e2c54635SPaolo Bonzini}
2076e2c54635SPaolo Bonzini
2077e2c54635SPaolo Bonzini
2078e2c54635SPaolo Bonzini#
2079e2c54635SPaolo Bonzini# STATE_PROTO: reading a function/whatever prototype.
2080e2c54635SPaolo Bonzini#
2081e2c54635SPaolo Bonzinisub process_proto($$) {
2082e2c54635SPaolo Bonzini    my $file = shift;
2083e2c54635SPaolo Bonzini
2084e2c54635SPaolo Bonzini    if (/$doc_inline_oneline/) {
2085e2c54635SPaolo Bonzini	$section = $1;
2086e2c54635SPaolo Bonzini	$contents = $2;
2087e2c54635SPaolo Bonzini	if ($contents ne "") {
2088e2c54635SPaolo Bonzini	    $contents .= "\n";
2089e2c54635SPaolo Bonzini	    dump_section($file, $section, $contents);
2090e2c54635SPaolo Bonzini	    $section = $section_default;
2091e2c54635SPaolo Bonzini	    $contents = "";
2092e2c54635SPaolo Bonzini	}
2093e2c54635SPaolo Bonzini    } elsif (/$doc_inline_start/) {
2094e2c54635SPaolo Bonzini	$state = STATE_INLINE;
2095e2c54635SPaolo Bonzini	$inline_doc_state = STATE_INLINE_NAME;
2096e2c54635SPaolo Bonzini    } elsif ($decl_type eq 'function') {
2097e2c54635SPaolo Bonzini	process_proto_function($_, $file);
2098e2c54635SPaolo Bonzini    } else {
2099e2c54635SPaolo Bonzini	process_proto_type($_, $file);
2100e2c54635SPaolo Bonzini    }
2101e2c54635SPaolo Bonzini}
2102e2c54635SPaolo Bonzini
2103e2c54635SPaolo Bonzini#
2104e2c54635SPaolo Bonzini# STATE_DOCBLOCK: within a DOC: block.
2105e2c54635SPaolo Bonzini#
2106e2c54635SPaolo Bonzinisub process_docblock($$) {
2107e2c54635SPaolo Bonzini    my $file = shift;
2108e2c54635SPaolo Bonzini
2109e2c54635SPaolo Bonzini    if (/$doc_end/) {
2110e2c54635SPaolo Bonzini	dump_doc_section($file, $section, $contents);
2111e2c54635SPaolo Bonzini	$section = $section_default;
2112e2c54635SPaolo Bonzini	$contents = "";
2113e2c54635SPaolo Bonzini	$function = "";
2114e2c54635SPaolo Bonzini	%parameterdescs = ();
2115e2c54635SPaolo Bonzini	%parametertypes = ();
2116e2c54635SPaolo Bonzini	@parameterlist = ();
2117e2c54635SPaolo Bonzini	%sections = ();
2118e2c54635SPaolo Bonzini	@sectionlist = ();
2119e2c54635SPaolo Bonzini	$prototype = "";
2120e2c54635SPaolo Bonzini	$state = STATE_NORMAL;
2121e2c54635SPaolo Bonzini    } elsif (/$doc_content/) {
2122e2c54635SPaolo Bonzini	if ( $1 eq "" )	{
2123e2c54635SPaolo Bonzini	    $contents .= $blankline;
2124e2c54635SPaolo Bonzini	} else {
2125e2c54635SPaolo Bonzini	    $contents .= $1 . "\n";
2126e2c54635SPaolo Bonzini	}
2127e2c54635SPaolo Bonzini    }
2128e2c54635SPaolo Bonzini}
2129e2c54635SPaolo Bonzini
2130e2c54635SPaolo Bonzini#
2131e2c54635SPaolo Bonzini# STATE_INLINE: docbook comments within a prototype.
2132e2c54635SPaolo Bonzini#
2133e2c54635SPaolo Bonzinisub process_inline($$) {
2134e2c54635SPaolo Bonzini    my $file = shift;
2135e2c54635SPaolo Bonzini
2136e2c54635SPaolo Bonzini    # First line (state 1) needs to be a @parameter
2137e2c54635SPaolo Bonzini    if ($inline_doc_state == STATE_INLINE_NAME && /$doc_inline_sect/o) {
2138e2c54635SPaolo Bonzini	$section = $1;
2139e2c54635SPaolo Bonzini	$contents = $2;
2140e2c54635SPaolo Bonzini	$new_start_line = $.;
2141e2c54635SPaolo Bonzini	if ($contents ne "") {
2142e2c54635SPaolo Bonzini	    while (substr($contents, 0, 1) eq " ") {
2143e2c54635SPaolo Bonzini		$contents = substr($contents, 1);
2144e2c54635SPaolo Bonzini	    }
2145e2c54635SPaolo Bonzini	    $contents .= "\n";
2146e2c54635SPaolo Bonzini	}
2147e2c54635SPaolo Bonzini	$inline_doc_state = STATE_INLINE_TEXT;
2148e2c54635SPaolo Bonzini	# Documentation block end */
2149e2c54635SPaolo Bonzini    } elsif (/$doc_inline_end/) {
2150e2c54635SPaolo Bonzini	if (($contents ne "") && ($contents ne "\n")) {
2151e2c54635SPaolo Bonzini	    dump_section($file, $section, $contents);
2152e2c54635SPaolo Bonzini	    $section = $section_default;
2153e2c54635SPaolo Bonzini	    $contents = "";
2154e2c54635SPaolo Bonzini	}
2155e2c54635SPaolo Bonzini	$state = STATE_PROTO;
2156e2c54635SPaolo Bonzini	$inline_doc_state = STATE_INLINE_NA;
2157e2c54635SPaolo Bonzini	# Regular text
2158e2c54635SPaolo Bonzini    } elsif (/$doc_content/) {
2159e2c54635SPaolo Bonzini	if ($inline_doc_state == STATE_INLINE_TEXT) {
2160e2c54635SPaolo Bonzini	    $contents .= $1 . "\n";
2161e2c54635SPaolo Bonzini	    # nuke leading blank lines
2162e2c54635SPaolo Bonzini	    if ($contents =~ /^\s*$/) {
2163e2c54635SPaolo Bonzini		$contents = "";
2164e2c54635SPaolo Bonzini	    }
2165e2c54635SPaolo Bonzini	} elsif ($inline_doc_state == STATE_INLINE_NAME) {
2166e2c54635SPaolo Bonzini	    $inline_doc_state = STATE_INLINE_ERROR;
2167e2c54635SPaolo Bonzini	    print STDERR "${file}:$.: warning: ";
2168e2c54635SPaolo Bonzini	    print STDERR "Incorrect use of kernel-doc format: $_";
2169e2c54635SPaolo Bonzini	    ++$warnings;
2170e2c54635SPaolo Bonzini	}
2171e2c54635SPaolo Bonzini    }
2172e2c54635SPaolo Bonzini}
2173e2c54635SPaolo Bonzini
2174e2c54635SPaolo Bonzini
2175e2c54635SPaolo Bonzinisub process_file($) {
2176e2c54635SPaolo Bonzini    my $file;
2177e2c54635SPaolo Bonzini    my $initial_section_counter = $section_counter;
2178e2c54635SPaolo Bonzini    my ($orig_file) = @_;
2179e2c54635SPaolo Bonzini
2180e2c54635SPaolo Bonzini    $file = map_filename($orig_file);
2181e2c54635SPaolo Bonzini
2182e2c54635SPaolo Bonzini    if (!open(IN,"<$file")) {
2183e2c54635SPaolo Bonzini	print STDERR "Error: Cannot open file $file\n";
2184e2c54635SPaolo Bonzini	++$errors;
2185e2c54635SPaolo Bonzini	return;
2186e2c54635SPaolo Bonzini    }
2187e2c54635SPaolo Bonzini
2188e2c54635SPaolo Bonzini    $. = 1;
2189e2c54635SPaolo Bonzini
2190e2c54635SPaolo Bonzini    $section_counter = 0;
2191e2c54635SPaolo Bonzini    while (<IN>) {
2192e2c54635SPaolo Bonzini	while (s/\\\s*$//) {
2193e2c54635SPaolo Bonzini	    $_ .= <IN>;
2194e2c54635SPaolo Bonzini	}
2195e2c54635SPaolo Bonzini	# Replace tabs by spaces
2196e2c54635SPaolo Bonzini        while ($_ =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {};
2197e2c54635SPaolo Bonzini	# Hand this line to the appropriate state handler
2198e2c54635SPaolo Bonzini	if ($state == STATE_NORMAL) {
2199e2c54635SPaolo Bonzini	    process_normal();
2200e2c54635SPaolo Bonzini	} elsif ($state == STATE_NAME) {
2201e2c54635SPaolo Bonzini	    process_name($file, $_);
2202e2c54635SPaolo Bonzini	} elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE) {
2203e2c54635SPaolo Bonzini	    process_body($file, $_);
2204e2c54635SPaolo Bonzini	} elsif ($state == STATE_INLINE) { # scanning for inline parameters
2205e2c54635SPaolo Bonzini	    process_inline($file, $_);
2206e2c54635SPaolo Bonzini	} elsif ($state == STATE_PROTO) {
2207e2c54635SPaolo Bonzini	    process_proto($file, $_);
2208e2c54635SPaolo Bonzini	} elsif ($state == STATE_DOCBLOCK) {
2209e2c54635SPaolo Bonzini	    process_docblock($file, $_);
2210e2c54635SPaolo Bonzini	}
2211e2c54635SPaolo Bonzini    }
2212e2c54635SPaolo Bonzini
2213e2c54635SPaolo Bonzini    # Make sure we got something interesting.
2214e2c54635SPaolo Bonzini    if ($initial_section_counter == $section_counter && $
2215e2c54635SPaolo Bonzini	output_mode ne "none") {
2216e2c54635SPaolo Bonzini	if ($output_selection == OUTPUT_INCLUDE) {
2217e2c54635SPaolo Bonzini	    print STDERR "${file}:1: warning: '$_' not found\n"
2218e2c54635SPaolo Bonzini		for keys %function_table;
2219e2c54635SPaolo Bonzini	}
2220e2c54635SPaolo Bonzini	else {
2221e2c54635SPaolo Bonzini	    print STDERR "${file}:1: warning: no structured comments found\n";
2222e2c54635SPaolo Bonzini	}
2223e2c54635SPaolo Bonzini    }
2224e2c54635SPaolo Bonzini}
2225e2c54635SPaolo Bonzini
2226e2c54635SPaolo Bonzini
2227e2c54635SPaolo Bonzini$kernelversion = get_kernel_version();
2228e2c54635SPaolo Bonzini
2229e2c54635SPaolo Bonzini# generate a sequence of code that will splice in highlighting information
2230e2c54635SPaolo Bonzini# using the s// operator.
2231e2c54635SPaolo Bonzinifor (my $k = 0; $k < @highlights; $k++) {
2232e2c54635SPaolo Bonzini    my $pattern = $highlights[$k][0];
2233e2c54635SPaolo Bonzini    my $result = $highlights[$k][1];
2234e2c54635SPaolo Bonzini#   print STDERR "scanning pattern:$pattern, highlight:($result)\n";
2235e2c54635SPaolo Bonzini    $dohighlight .=  "\$contents =~ s:$pattern:$result:gs;\n";
2236e2c54635SPaolo Bonzini}
2237e2c54635SPaolo Bonzini
2238e2c54635SPaolo Bonzini# Read the file that maps relative names to absolute names for
2239e2c54635SPaolo Bonzini# separate source and object directories and for shadow trees.
2240e2c54635SPaolo Bonziniif (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
2241e2c54635SPaolo Bonzini	my ($relname, $absname);
2242e2c54635SPaolo Bonzini	while(<SOURCE_MAP>) {
2243e2c54635SPaolo Bonzini		chop();
2244e2c54635SPaolo Bonzini		($relname, $absname) = (split())[0..1];
2245e2c54635SPaolo Bonzini		$relname =~ s:^/+::;
2246e2c54635SPaolo Bonzini		$source_map{$relname} = $absname;
2247e2c54635SPaolo Bonzini	}
2248e2c54635SPaolo Bonzini	close(SOURCE_MAP);
2249e2c54635SPaolo Bonzini}
2250e2c54635SPaolo Bonzini
2251e2c54635SPaolo Bonziniif ($output_selection == OUTPUT_EXPORTED ||
2252e2c54635SPaolo Bonzini    $output_selection == OUTPUT_INTERNAL) {
2253e2c54635SPaolo Bonzini
2254e2c54635SPaolo Bonzini    push(@export_file_list, @ARGV);
2255e2c54635SPaolo Bonzini
2256e2c54635SPaolo Bonzini    foreach (@export_file_list) {
2257e2c54635SPaolo Bonzini	chomp;
2258e2c54635SPaolo Bonzini	process_export_file($_);
2259e2c54635SPaolo Bonzini    }
2260e2c54635SPaolo Bonzini}
2261e2c54635SPaolo Bonzini
2262e2c54635SPaolo Bonziniforeach (@ARGV) {
2263e2c54635SPaolo Bonzini    chomp;
2264e2c54635SPaolo Bonzini    process_file($_);
2265e2c54635SPaolo Bonzini}
2266e2c54635SPaolo Bonziniif ($verbose && $errors) {
2267e2c54635SPaolo Bonzini  print STDERR "$errors errors\n";
2268e2c54635SPaolo Bonzini}
2269e2c54635SPaolo Bonziniif ($verbose && $warnings) {
2270e2c54635SPaolo Bonzini  print STDERR "$warnings warnings\n";
2271e2c54635SPaolo Bonzini}
2272e2c54635SPaolo Bonzini
2273e2c54635SPaolo Bonziniexit($output_mode eq "none" ? 0 : $errors);
2274