aboutsummaryrefslogtreecommitdiffstats
path: root/net/tipc/msg.c
blob: 3bd345a344e52eae9a5bb783f60219eefc4f440d (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
/*
 * net/tipc/msg.c: TIPC message header routines
 *     
 * Copyright (c) 2000-2006, Ericsson AB
 * Copyright (c) 2005, Wind River Systems
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the names of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "core.h"
#include "addr.h"
#include "dbg.h"
#include "msg.h"
#include "bearer.h"


void tipc_msg_print(struct print_buf *buf, struct tipc_msg *msg, const char *str)
{
	u32 usr = msg_user(msg);
	tipc_printf(buf, str);

	switch (usr) {
	case MSG_BUNDLER:
		tipc_printf(buf, "BNDL::");
		tipc_printf(buf, "MSGS(%u):", msg_msgcnt(msg));
		break;
	case BCAST_PROTOCOL:
		tipc_printf(buf, "BCASTP::");
		break;
	case MSG_FRAGMENTER:
		tipc_printf(buf, "FRAGM::");
		switch (msg_type(msg)) {
		case FIRST_FRAGMENT:
			tipc_printf(buf, "FIRST:");
			break;
		case FRAGMENT:
			tipc_printf(buf, "BODY:");
			break;
		case LAST_FRAGMENT:
			tipc_printf(buf, "LAST:");
			break;
		default:
			tipc_printf(buf, "UNKNOWN:%x",msg_type(msg));

		}
		tipc_printf(buf, "NO(%u/%u):",msg_long_msgno(msg),
			    msg_fragm_no(msg));
		break;
	case DATA_LOW:
	case DATA_MEDIUM:
	case DATA_HIGH:
	case DATA_CRITICAL:
		tipc_printf(buf, "DAT%u:", msg_user(msg));
		if (msg_short(msg)) {
			tipc_printf(buf, "CON:");
			break;
		}
		switch (msg_type(msg)) {
		case TIPC_CONN_MSG:
			tipc_printf(buf, "CON:");
			break;
		case TIPC_MCAST_MSG:
			tipc_printf(buf, "MCST:");
			break;
		case TIPC_NAMED_MSG:
			tipc_printf(buf, "NAM:");
			break;
		case TIPC_DIRECT_MSG:
			tipc_printf(buf, "DIR:");
			break;
		default:
			tipc_printf(buf, "UNKNOWN TYPE %u",msg_type(msg));
		}
		if (msg_routed(msg) && !msg_non_seq(msg))
			tipc_printf(buf, "ROUT:");
		if (msg_reroute_cnt(msg))
			tipc_printf(buf, "REROUTED(%u):",
				    msg_reroute_cnt(msg));
		break;
	case NAME_DISTRIBUTOR:
		tipc_printf(buf, "NMD::");
		switch (msg_type(msg)) {
		case PUBLICATION:
			tipc_printf(buf, "PUBL(%u):", (msg_size(msg) - msg_hdr_sz(msg)) / 20);	/* Items */
			break;
		case WITHDRAWAL:
			tipc_printf(buf, "WDRW:");
			break;
		default:
			tipc_printf(buf, "UNKNOWN:%x",msg_type(msg));
		}
		if (msg_routed(msg))
			tipc_printf(buf, "ROUT:");
		if (msg_reroute_cnt(msg))
			tipc_printf(buf, "REROUTED(%u):",
				    msg_reroute_cnt(msg));
		break;
	case CONN_MANAGER:
		tipc_printf(buf, "CONN_MNG:");
		switch (msg_type(msg)) {
		case CONN_PROBE:
			tipc_printf(buf, "PROBE:");
			break;
		case CONN_PROBE_REPLY:
			tipc_printf(buf, "PROBE_REPLY:");
			break;
		case CONN_ACK:
			tipc_printf(buf, "CONN_ACK:");
			tipc_printf(buf, "ACK(%u):",msg_msgcnt(msg));
			break;
		default:
			tipc_printf(buf, "UNKNOWN TYPE:%x",msg_type(msg));
		}
		if (msg_routed(msg))
			tipc_printf(buf, "ROUT:");
		if (msg_reroute_cnt(msg))
			tipc_printf(buf, "REROUTED(%u):",msg_reroute_cnt(msg));
		break;
	case LINK_PROTOCOL:
		tipc_printf(buf, "PROT:TIM(%u):",msg_timestamp(msg));
		switch (msg_type(msg)) {
		case STATE_MSG:
			tipc_printf(buf, "STATE:");
			tipc_printf(buf, "%s:",msg_probe(msg) ? "PRB" :"");
			tipc_printf(buf, "NXS(%u):",msg_next_sent(msg));
			tipc_printf(buf, "GAP(%u):",msg_seq_gap(msg));
			tipc_printf(buf, "LSTBC(%u):",msg_last_bcast(msg));
			break;
		case RESET_MSG:
			tipc_printf(buf, "RESET:");
			if (msg_size(msg) != msg_hdr_sz(msg))
				tipc_printf(buf, "BEAR:%s:",msg_data(msg));
			break;
		case ACTIVATE_MSG:
			tipc_printf(buf, "ACTIVATE:");
			break;
		default:
			tipc_printf(buf, "UNKNOWN TYPE:%x",msg_type(msg));
		}
		tipc_printf(buf, "PLANE(%c):",msg_net_plane(msg));
		tipc_printf(buf, "SESS(%u):",msg_session(msg));
		break;
	case CHANGEOVER_PROTOCOL:
		tipc_printf(buf, "TUNL:");
		switch (msg_type(msg)) {
		case DUPLICATE_MSG:
			tipc_printf(buf, "DUPL:");
			break;
		case ORIGINAL_MSG:
			tipc_printf(buf, "ORIG:");
			tipc_printf(buf, "EXP(%u)",msg_msgcnt(msg));
			break;
		default:
			tipc_printf(buf, "UNKNOWN TYPE:%x",msg_type(msg));
		}
		break;
	case ROUTE_DISTRIBUTOR:
		tipc_printf(buf, "ROUTING_MNG:");
		switch (msg_type(msg)) {
		case EXT_ROUTING_TABLE:
			tipc_printf(buf, "EXT_TBL:");
			tipc_printf(buf, "TO:%x:",msg_remote_node(msg));
			break;
		case LOCAL_ROUTING_TABLE:
			tipc_printf(buf, "LOCAL_TBL:");
			tipc_printf(buf, "TO:%x:",msg_remote_node(msg));
			break;
		case SLAVE_ROUTING_TABLE:
			tipc_printf(buf, "DP_TBL:");
			tipc_printf(buf, "TO:%x:",msg_remote_node(msg));
			break;
		case ROUTE_ADDITION:
			tipc_printf(buf, "ADD:");
			tipc_printf(buf, "TO:%x:",msg_remote_node(msg));
			break;
		case ROUTE_REMOVAL:
			tipc_printf(buf, "REMOVE:");
			tipc_printf(buf, "TO:%x:",msg_remote_node(msg));
			break;
		default:
			tipc_printf(buf, "UNKNOWN TYPE:%x",msg_type(msg));
		}
		break;
	case LINK_CONFIG:
		tipc_printf(buf, "CFG:");
		switch (msg_type(msg)) {
		case DSC_REQ_MSG:
			tipc_printf(buf, "DSC_REQ:");
			break;
		case DSC_RESP_MSG:
			tipc_printf(buf, "DSC_RESP:");
			break;
		default:
			tipc_printf(buf, "UNKNOWN TYPE:%x:",msg_type(msg));
			break;
		}
		break;
	default:
		tipc_printf(buf, "UNKNOWN USER:");
	}

	switch (usr) {
	case CONN_MANAGER:
	case NAME_DISTRIBUTOR:
	case DATA_LOW:
	case DATA_MEDIUM:
	case DATA_HIGH:
	case DATA_CRITICAL:
		if (msg_short(msg))
			break;	/* No error */
		switch (msg_errcode(msg)) {
		case TIPC_OK:
			break;
		case TIPC_ERR_NO_NAME:
			tipc_printf(buf, "NO_NAME:");
			break;
		case TIPC_ERR_NO_PORT:
			tipc_printf(buf, "NO_PORT:");
			break;
		case TIPC_ERR_NO_NODE:
			tipc_printf(buf, "NO_PROC:");
			break;
		case TIPC_ERR_OVERLOAD:
			tipc_printf(buf, "OVERLOAD:");
			break;
		case TIPC_CONN_SHUTDOWN:
			tipc_printf(buf, "SHUTDOWN:");
			break;
		default:
			tipc_printf(buf, "UNKNOWN ERROR(%x):",
				    msg_errcode(msg));
		}
	default:{}
	}

	tipc_printf(buf, "HZ(%u):", msg_hdr_sz(msg));
	tipc_printf(buf, "SZ(%u):", msg_size(msg));
	tipc_printf(buf, "SQNO(%u):", msg_seqno(msg));

	if (msg_non_seq(msg))
		tipc_printf(buf, "NOSEQ:");
	else {
		tipc_printf(buf, "ACK(%u):", msg_ack(msg));
	}
	tipc_printf(buf, "BACK(%u):", msg_bcast_ack(msg));
	tipc_printf(buf, "PRND(%x)", msg_prevnode(msg));

	if (msg_isdata(msg)) {
		if (msg_named(msg)) {
			tipc_printf(buf, "NTYP(%u):", msg_nametype(msg));
			tipc_printf(buf, "NINST(%u)", msg_nameinst(msg));
		}
	}

	if ((usr != LINK_PROTOCOL) && (usr != LINK_CONFIG) &&
	    (usr != MSG_BUNDLER)) {
		if (!msg_short(msg)) {
			tipc_printf(buf, ":ORIG(%x:%u):",
				    msg_orignode(msg), msg_origport(msg));
			tipc_printf(buf, ":DEST(%x:%u):",
				    msg_destnode(msg), msg_destport(msg));
		} else {
			tipc_printf(buf, ":OPRT(%u):", msg_origport(msg));
			tipc_printf(buf, ":DPRT(%u):", msg_destport(msg));
		}
		if (msg_routed(msg) && !msg_non_seq(msg))
			tipc_printf(buf, ":TSEQN(%u)", msg_transp_seqno(msg));
	}
	if (msg_user(msg) == NAME_DISTRIBUTOR) {
		tipc_printf(buf, ":ONOD(%x):", msg_orignode(msg));
		tipc_printf(buf, ":DNOD(%x):", msg_destnode(msg));
		if (msg_routed(msg)) {
			tipc_printf(buf, ":CSEQN(%u)", msg_transp_seqno(msg));
		}
	}

	if (msg_user(msg) ==  LINK_CONFIG) {
		u32* raw = (u32*)msg;
		struct tipc_media_addr* orig = (struct tipc_media_addr*)&raw[5];
		tipc_printf(buf, ":REQL(%u):", msg_req_links(msg));
		tipc_printf(buf, ":DDOM(%x):", msg_dest_domain(msg));
		tipc_printf(buf, ":NETID(%u):", msg_bc_netid(msg));
		tipc_media_addr_printf(buf, orig);
	}
	if (msg_user(msg) == BCAST_PROTOCOL) {
		tipc_printf(buf, "BCNACK:AFTER(%u):", msg_bcgap_after(msg));
		tipc_printf(buf, "TO(%u):", msg_bcgap_to(msg));
	}
	tipc_printf(buf, "\n");
	if ((usr == CHANGEOVER_PROTOCOL) && (msg_msgcnt(msg))) {
		tipc_msg_print(buf,msg_get_wrapped(msg),"      /");
	}
	if ((usr == MSG_FRAGMENTER) && (msg_type(msg) == FIRST_FRAGMENT)) {
		tipc_msg_print(buf,msg_get_wrapped(msg),"      /");
	}
}
id='n1712' href='#n1712'>1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604
#!/usr/bin/perl -w

use strict;

## Copyright (c) 1998 Michael Zucchi, All Rights Reserved        ##
## Copyright (C) 2000, 1  Tim Waugh <twaugh@redhat.com>          ##
## Copyright (C) 2001  Simon Huggins                             ##
## Copyright (C) 2005-2012  Randy Dunlap                         ##
## Copyright (C) 2012  Dan Luedtke                               ##
## 								 ##
## #define enhancements by Armin Kuster <akuster@mvista.com>	 ##
## Copyright (c) 2000 MontaVista Software, Inc.			 ##
## 								 ##
## This software falls under the GNU General Public License.     ##
## Please read the COPYING file for more information             ##

# 18/01/2001 - 	Cleanups
# 		Functions prototyped as foo(void) same as foo()
# 		Stop eval'ing where we don't need to.
# -- huggie@earth.li

# 27/06/2001 -  Allowed whitespace after initial "/**" and
#               allowed comments before function declarations.
# -- Christian Kreibich <ck@whoop.org>

# Still to do:
# 	- add perldoc documentation
# 	- Look more closely at some of the scarier bits :)

# 26/05/2001 - 	Support for separate source and object trees.
#		Return error code.
# 		Keith Owens <kaos@ocs.com.au>

# 23/09/2001 - Added support for typedefs, structs, enums and unions
#              Support for Context section; can be terminated using empty line
#              Small fixes (like spaces vs. \s in regex)
# -- Tim Jansen <tim@tjansen.de>

# 25/07/2012 - Added support for HTML5
# -- Dan Luedtke <mail@danrl.de>

#
# This will read a 'c' file and scan for embedded comments in the
# style of gnome comments (+minor extensions - see below).
#

# Note: This only supports 'c'.

# usage:
# kernel-doc [ -docbook | -html | -html5 | -text | -man | -list ]
#            [ -no-doc-sections ]
#            [ -function funcname [ -function funcname ...] ]
#            c file(s)s > outputfile
# or
#            [ -nofunction funcname [ -function funcname ...] ]
#            c file(s)s > outputfile
#
#  Set output format using one of -docbook -html -html5 -text or -man.
#  Default is man.
#  The -list format is for internal use by docproc.
#
#  -no-doc-sections
#	Do not output DOC: sections
#
#  -function funcname
#	If set, then only generate documentation for the given function(s) or
#	DOC: section titles.  All other functions and DOC: sections are ignored.
#
#  -nofunction funcname
#	If set, then only generate documentation for the other function(s)/DOC:
#	sections. Cannot be used together with -function (yes, that's a bug --
#	perl hackers can fix it 8))
#
#  c files - list of 'c' files to process
#
#  All output goes to stdout, with errors to stderr.

#
# format of comments.
# In the following table, (...)? signifies optional structure.
#                         (...)* signifies 0 or more structure elements
# /**
#  * function_name(:)? (- short description)?
# (* @parameterx: (description of parameter x)?)*
# (* a blank line)?
#  * (Description:)? (Description of function)?
#  * (section header: (section description)? )*
#  (*)?*/
#
# So .. the trivial example would be:
#
# /**
#  * my_function
#  */
#
# If the Description: header tag is omitted, then there must be a blank line
# after the last parameter specification.
# e.g.
# /**
#  * my_function - does my stuff
#  * @my_arg: its mine damnit
#  *
#  * Does my stuff explained.
#  */
#
#  or, could also use:
# /**
#  * my_function - does my stuff
#  * @my_arg: its mine damnit
#  * Description: Does my stuff explained.
#  */
# etc.
#
# Besides functions you can also write documentation for structs, unions,
# enums and typedefs. Instead of the function name you must write the name
# of the declaration;  the struct/union/enum/typedef must always precede
# the name. Nesting of declarations is not supported.
# Use the argument mechanism to document members or constants.
# e.g.
# /**
#  * struct my_struct - short description
#  * @a: first member
#  * @b: second member
#  *
#  * Longer description
#  */
# struct my_struct {
#     int a;
#     int b;
# /* private: */
#     int c;
# };
#
# All descriptions can be multiline, except the short function description.
#
# You can also add additional sections. When documenting kernel functions you
# should document the "Context:" of the function, e.g. whether the functions
# can be called form interrupts. Unlike other sections you can end it with an
# empty line.
# A non-void function should have a "Return:" section describing the return
# value(s).
# Example-sections should contain the string EXAMPLE so that they are marked
# appropriately in DocBook.
#
# Example:
# /**
#  * user_function - function that can only be called in user context
#  * @a: some argument
#  * Context: !in_interrupt()
#  *
#  * Some description
#  * Example:
#  *    user_function(22);
#  */
# ...
#
#
# All descriptive text is further processed, scanning for the following special
# patterns, which are highlighted appropriately.
#
# 'funcname()' - function
# '$ENVVAR' - environmental variable
# '&struct_name' - name of a structure (up to two words including 'struct')
# '@parameter' - name of a parameter
# '%CONST' - name of a constant.

## init lots of data

my $errors = 0;
my $warnings = 0;
my $anon_struct_union = 0;

# match expressions used to find embedded type information
my $type_constant = '\%([-_\w]+)';
my $type_func = '(\w+)\(\)';
my $type_param = '\@(\w+)';
my $type_struct = '\&((struct\s*)*[_\w]+)';
my $type_struct_xml = '\\&amp;((struct\s*)*[_\w]+)';
my $type_env = '(\$\w+)';

# Output conversion substitutions.
#  One for each output format

# these work fairly well
my %highlights_html = ( $type_constant, "<i>\$1</i>",
			$type_func, "<b>\$1</b>",
			$type_struct_xml, "<i>\$1</i>",
			$type_env, "<b><i>\$1</i></b>",
			$type_param, "<tt><b>\$1</b></tt>" );
my $local_lt = "\\\\\\\\lt:";
my $local_gt = "\\\\\\\\gt:";
my $blankline_html = $local_lt . "p" . $local_gt;	# was "<p>"

# html version 5
my %highlights_html5 = ( $type_constant, "<span class=\"const\">\$1</span>",
			$type_func, "<span class=\"func\">\$1</span>",
			$type_struct_xml, "<span class=\"struct\">\$1</span>",
			$type_env, "<span class=\"env\">\$1</span>",
			$type_param, "<span class=\"param\">\$1</span>" );
my $blankline_html5 = $local_lt . "br /" . $local_gt;

# XML, docbook format
my %highlights_xml = ( "([^=])\\\"([^\\\"<]+)\\\"", "\$1<quote>\$2</quote>",
			$type_constant, "<constant>\$1</constant>",
			$type_func, "<function>\$1</function>",
			$type_struct_xml, "<structname>\$1</structname>",
			$type_env, "<envar>\$1</envar>",
			$type_param, "<parameter>\$1</parameter>" );
my $blankline_xml = $local_lt . "/para" . $local_gt . $local_lt . "para" . $local_gt . "\n";

# gnome, docbook format
my %highlights_gnome = ( $type_constant, "<replaceable class=\"option\">\$1</replaceable>",
			 $type_func, "<function>\$1</function>",
			 $type_struct, "<structname>\$1</structname>",
			 $type_env, "<envar>\$1</envar>",
			 $type_param, "<parameter>\$1</parameter>" );
my $blankline_gnome = "</para><para>\n";

# these are pretty rough
my %highlights_man = ( $type_constant, "\$1",
		       $type_func, "\\\\fB\$1\\\\fP",
		       $type_struct, "\\\\fI\$1\\\\fP",
		       $type_param, "\\\\fI\$1\\\\fP" );
my $blankline_man = "";

# text-mode
my %highlights_text = ( $type_constant, "\$1",
			$type_func, "\$1",
			$type_struct, "\$1",
			$type_param, "\$1" );
my $blankline_text = "";

# list mode
my %highlights_list = ( $type_constant, "\$1",
			$type_func, "\$1",
			$type_struct, "\$1",
			$type_param, "\$1" );
my $blankline_list = "";

# read arguments
if ($#ARGV == -1) {
    usage();
}

my $kernelversion;
my $dohighlight = "";

my $verbose = 0;
my $output_mode = "man";
my $output_preformatted = 0;
my $no_doc_sections = 0;
my %highlights = %highlights_man;
my $blankline = $blankline_man;
my $modulename = "Kernel API";
my $function_only = 0;
my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
		'July', 'August', 'September', 'October',
		'November', 'December')[(localtime)[4]] .
  " " . ((localtime)[5]+1900);

# Essentially these are globals.
# They probably want to be tidied up, made more localised or something.
# CAVEAT EMPTOR!  Some of the others I localised may not want to be, which
# could cause "use of undefined value" or other bugs.
my ($function, %function_table, %parametertypes, $declaration_purpose);
my ($type, $declaration_name, $return_type);
my ($newsection, $newcontents, $prototype, $brcount, %source_map);

if (defined($ENV{'KBUILD_VERBOSE'})) {
	$verbose = "$ENV{'KBUILD_VERBOSE'}";
}

# Generated docbook code is inserted in a template at a point where
# docbook v3.1 requires a non-zero sequence of RefEntry's; see:
# http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
# We keep track of number of generated entries and generate a dummy
# if needs be to ensure the expanded template can be postprocessed
# into html.
my $section_counter = 0;

my $lineprefix="";

# states
# 0 - normal code
# 1 - looking for function name
# 2 - scanning field start.
# 3 - scanning prototype.
# 4 - documentation block
my $state;
my $in_doc_sect;

#declaration types: can be
# 'function', 'struct', 'union', 'enum', 'typedef'
my $decl_type;

my $doc_special = "\@\%\$\&";

my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
my $doc_end = '\*/';
my $doc_com = '\s*\*\s*';
my $doc_com_body = '\s*\* ?';
my $doc_decl = $doc_com . '(\w+)';
my $doc_sect = $doc_com . '([' . $doc_special . ']?[\w\s]+):(.*)';
my $doc_content = $doc_com_body . '(.*)';
my $doc_block = $doc_com . 'DOC:\s*(.*)?';

my %constants;
my %parameterdescs;
my @parameterlist;
my %sections;
my @sectionlist;
my $sectcheck;
my $struct_actual;

my $contents = "";
my $section_default = "Description";	# default section
my $section_intro = "Introduction";
my $section = $section_default;
my $section_context = "Context";
my $section_return = "Return";

my $undescribed = "-- undescribed --";

reset_state();

while ($ARGV[0] =~ m/^-(.*)/) {
    my $cmd = shift @ARGV;
    if ($cmd eq "-html") {
	$output_mode = "html";
	%highlights = %highlights_html;
	$blankline = $blankline_html;
    } elsif ($cmd eq "-html5") {
	$output_mode = "html5";
	%highlights = %highlights_html5;
	$blankline = $blankline_html5;
    } elsif ($cmd eq "-man") {
	$output_mode = "man";
	%highlights = %highlights_man;
	$blankline = $blankline_man;
    } elsif ($cmd eq "-text") {
	$output_mode = "text";
	%highlights = %highlights_text;
	$blankline = $blankline_text;
    } elsif ($cmd eq "-docbook") {
	$output_mode = "xml";
	%highlights = %highlights_xml;
	$blankline = $blankline_xml;
    } elsif ($cmd eq "-list") {
	$output_mode = "list";
	%highlights = %highlights_list;
	$blankline = $blankline_list;
    } elsif ($cmd eq "-gnome") {
	$output_mode = "gnome";
	%highlights = %highlights_gnome;
	$blankline = $blankline_gnome;
    } elsif ($cmd eq "-module") { # not needed for XML, inherits from calling document
	$modulename = shift @ARGV;
    } elsif ($cmd eq "-function") { # to only output specific functions
	$function_only = 1;
	$function = shift @ARGV;
	$function_table{$function} = 1;
    } elsif ($cmd eq "-nofunction") { # to only output specific functions
	$function_only = 2;
	$function = shift @ARGV;
	$function_table{$function} = 1;
    } elsif ($cmd eq "-v") {
	$verbose = 1;
    } elsif (($cmd eq "-h") || ($cmd eq "--help")) {
	usage();
    } elsif ($cmd eq '-no-doc-sections') {
	    $no_doc_sections = 1;
    }
}

# continue execution near EOF;

sub usage {
    print "Usage: $0 [ -docbook | -html | -html5 | -text | -man | -list ]\n";
    print "         [ -no-doc-sections ]\n";
    print "         [ -function funcname [ -function funcname ...] ]\n";
    print "         [ -nofunction funcname [ -nofunction funcname ...] ]\n";
    print "         [ -v ]\n";
    print "         c source file(s) > outputfile\n";
    print "         -v : verbose output, more warnings & other info listed\n";
    exit 1;
}

# get kernel version from env
sub get_kernel_version() {
    my $version = 'unknown kernel version';

    if (defined($ENV{'KERNELVERSION'})) {
	$version = $ENV{'KERNELVERSION'};
    }
    return $version;
}

##
# dumps section contents to arrays/hashes intended for that purpose.
#
sub dump_section {
    my $file = shift;
    my $name = shift;
    my $contents = join "\n", @_;

    if ($name =~ m/$type_constant/) {
	$name = $1;
#	print STDERR "constant section '$1' = '$contents'\n";
	$constants{$name} = $contents;
    } elsif ($name =~ m/$type_param/) {
#	print STDERR "parameter def '$1' = '$contents'\n";
	$name = $1;
	$parameterdescs{$name} = $contents;
	$sectcheck = $sectcheck . $name . " ";
    } elsif ($name eq "@\.\.\.") {
#	print STDERR "parameter def '...' = '$contents'\n";
	$name = "...";
	$parameterdescs{$name} = $contents;
	$sectcheck = $sectcheck . $name . " ";
    } else {
#	print STDERR "other section '$name' = '$contents'\n";
	if (defined($sections{$name}) && ($sections{$name} ne "")) {
		print STDERR "Error(${file}:$.): duplicate section name '$name'\n";
		++$errors;
	}
	$sections{$name} = $contents;
	push @sectionlist, $name;
    }
}

##
# dump DOC: section after checking that it should go out
#
sub dump_doc_section {
    my $file = shift;
    my $name = shift;
    my $contents = join "\n", @_;

    if ($no_doc_sections) {
        return;
    }

    if (($function_only == 0) ||
	( $function_only == 1 && defined($function_table{$name})) ||
	( $function_only == 2 && !defined($function_table{$name})))
    {
	dump_section($file, $name, $contents);
	output_blockhead({'sectionlist' => \@sectionlist,
			  'sections' => \%sections,
			  'module' => $modulename,
			  'content-only' => ($function_only != 0), });
    }
}

##
# output function
#
# parameterdescs, a hash.
#  function => "function name"
#  parameterlist => @list of parameters
#  parameterdescs => %parameter descriptions
#  sectionlist => @list of sections
#  sections => %section descriptions
#

sub output_highlight {
    my $contents = join "\n",@_;
    my $line;

#   DEBUG
#   if (!defined $contents) {
#	use Carp;
#	confess "output_highlight got called with no args?\n";
#   }

    if ($output_mode eq "html" || $output_mode eq "html5" ||
	$output_mode eq "xml") {
	$contents = local_unescape($contents);
	# convert data read & converted thru xml_escape() into &xyz; format:
	$contents =~ s/\\\\\\/\&/g;
    }
#   print STDERR "contents b4:$contents\n";
    eval $dohighlight;
    die $@ if $@;
#   print STDERR "contents af:$contents\n";

#   strip whitespaces when generating html5
    if ($output_mode eq "html5") {
	$contents =~ s/^\s+//;
	$contents =~ s/\s+$//;
    }
    foreach $line (split "\n", $contents) {
	if (! $output_preformatted) {
	    $line =~ s/^\s*//;
	}
	if ($line eq ""){
	    if (! $output_preformatted) {
		print $lineprefix, local_unescape($blankline);
	    }
	} else {
	    $line =~ s/\\\\\\/\&/g;
	    if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
		print "\\&$line";
	    } else {
		print $lineprefix, $line;
	    }
	}
	print "\n";
    }
}

# output sections in html
sub output_section_html(%) {
    my %args = %{$_[0]};
    my $section;

    foreach $section (@{$args{'sectionlist'}}) {
	print "<h3>$section</h3>\n";
	print "<blockquote>\n";
	output_highlight($args{'sections'}{$section});
	print "</blockquote>\n";
    }
}

# output enum in html
sub output_enum_html(%) {
    my %args = %{$_[0]};
    my ($parameter);
    my $count;
    print "<h2>enum " . $args{'enum'} . "</h2>\n";

    print "<b>enum " . $args{'enum'} . "</b> {<br>\n";
    $count = 0;
    foreach $parameter (@{$args{'parameterlist'}}) {
	print " <b>" . $parameter . "</b>";
	if ($count != $#{$args{'parameterlist'}}) {
	    $count++;
	    print ",\n";
	}
	print "<br>";
    }
    print "};<br>\n";

    print "<h3>Constants</h3>\n";
    print "<dl>\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	print "<dt><b>" . $parameter . "</b>\n";
	print "<dd>";
	output_highlight($args{'parameterdescs'}{$parameter});
    }
    print "</dl>\n";
    output_section_html(@_);
    print "<hr>\n";
}

# output typedef in html
sub output_typedef_html(%) {
    my %args = %{$_[0]};
    my ($parameter);
    my $count;
    print "<h2>typedef " . $args{'typedef'} . "</h2>\n";

    print "<b>typedef " . $args{'typedef'} . "</b>\n";
    output_section_html(@_);
    print "<hr>\n";
}

# output struct in html
sub output_struct_html(%) {
    my %args = %{$_[0]};
    my ($parameter);

    print "<h2>" . $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "</h2>\n";
    print "<b>" . $args{'type'} . " " . $args{'struct'} . "</b> {<br>\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	if ($parameter =~ /^#/) {
		print "$parameter<br>\n";
		next;
	}
	my $parameter_name = $parameter;
	$parameter_name =~ s/\[.*//;

	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
	$type = $args{'parametertypes'}{$parameter};
	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
	    # pointer-to-function
	    print "&nbsp; &nbsp; <i>$1</i><b>$parameter</b>) <i>($2)</i>;<br>\n";
	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
	    # bitfield
	    print "&nbsp; &nbsp; <i>$1</i> <b>$parameter</b>$2;<br>\n";
	} else {
	    print "&nbsp; &nbsp; <i>$type</i> <b>$parameter</b>;<br>\n";
	}
    }
    print "};<br>\n";

    print "<h3>Members</h3>\n";
    print "<dl>\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	($parameter =~ /^#/) && next;

	my $parameter_name = $parameter;
	$parameter_name =~ s/\[.*//;

	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
	print "<dt><b>" . $parameter . "</b>\n";
	print "<dd>";
	output_highlight($args{'parameterdescs'}{$parameter_name});
    }
    print "</dl>\n";
    output_section_html(@_);
    print "<hr>\n";
}

# output function in html
sub output_function_html(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);
    my $count;

    print "<h2>" . $args{'function'} . " - " . $args{'purpose'} . "</h2>\n";
    print "<i>" . $args{'functiontype'} . "</i>\n";
    print "<b>" . $args{'function'} . "</b>\n";
    print "(";
    $count = 0;
    foreach $parameter (@{$args{'parameterlist'}}) {
	$type = $args{'parametertypes'}{$parameter};
	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
	    # pointer-to-function
	    print "<i>$1</i><b>$parameter</b>) <i>($2)</i>";
	} else {
	    print "<i>" . $type . "</i> <b>" . $parameter . "</b>";
	}
	if ($count != $#{$args{'parameterlist'}}) {
	    $count++;
	    print ",\n";
	}
    }
    print ")\n";

    print "<h3>Arguments</h3>\n";
    print "<dl>\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	my $parameter_name = $parameter;
	$parameter_name =~ s/\[.*//;

	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
	print "<dt><b>" . $parameter . "</b>\n";
	print "<dd>";
	output_highlight($args{'parameterdescs'}{$parameter_name});
    }
    print "</dl>\n";
    output_section_html(@_);
    print "<hr>\n";
}

# output DOC: block header in html
sub output_blockhead_html(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);
    my $count;

    foreach $section (@{$args{'sectionlist'}}) {
	print "<h3>$section</h3>\n";
	print "<ul>\n";
	output_highlight($args{'sections'}{$section});
	print "</ul>\n";
    }
    print "<hr>\n";
}

# output sections in html5
sub output_section_html5(%) {
    my %args = %{$_[0]};
    my $section;

    foreach $section (@{$args{'sectionlist'}}) {
	print "<section>\n";
	print "<h1>$section</h1>\n";
	print "<p>\n";
	output_highlight($args{'sections'}{$section});
	print "</p>\n";
	print "</section>\n";
    }
}

# output enum in html5
sub output_enum_html5(%) {
    my %args = %{$_[0]};
    my ($parameter);
    my $count;
    my $html5id;

    $html5id = $args{'enum'};
    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
    print "<article class=\"enum\" id=\"enum:". $html5id . "\">";
    print "<h1>enum " . $args{'enum'} . "</h1>\n";
    print "<ol class=\"code\">\n";
    print "<li>";
    print "<span class=\"keyword\">enum</span> ";
    print "<span class=\"identifier\">" . $args{'enum'} . "</span> {";
    print "</li>\n";
    $count = 0;
    foreach $parameter (@{$args{'parameterlist'}}) {
	print "<li class=\"indent\">";
	print "<span class=\"param\">" . $parameter . "</span>";
	if ($count != $#{$args{'parameterlist'}}) {
	    $count++;
	    print ",";
	}
	print "</li>\n";
    }
    print "<li>};</li>\n";
    print "</ol>\n";

    print "<section>\n";
    print "<h1>Constants</h1>\n";
    print "<dl>\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	print "<dt>" . $parameter . "</dt>\n";
	print "<dd>";
	output_highlight($args{'parameterdescs'}{$parameter});
	print "</dd>\n";
    }
    print "</dl>\n";
    print "</section>\n";
    output_section_html5(@_);
    print "</article>\n";
}

# output typedef in html5
sub output_typedef_html5(%) {
    my %args = %{$_[0]};
    my ($parameter);
    my $count;
    my $html5id;

    $html5id = $args{'typedef'};
    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
    print "<article class=\"typedef\" id=\"typedef:" . $html5id . "\">\n";
    print "<h1>typedef " . $args{'typedef'} . "</h1>\n";

    print "<ol class=\"code\">\n";
    print "<li>";
    print "<span class=\"keyword\">typedef</span> ";
    print "<span class=\"identifier\">" . $args{'typedef'} . "</span>";
    print "</li>\n";
    print "</ol>\n";
    output_section_html5(@_);
    print "</article>\n";
}

# output struct in html5
sub output_struct_html5(%) {
    my %args = %{$_[0]};
    my ($parameter);
    my $html5id;

    $html5id = $args{'struct'};
    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
    print "<article class=\"struct\" id=\"struct:" . $html5id . "\">\n";
    print "<hgroup>\n";
    print "<h1>" . $args{'type'} . " " . $args{'struct'} . "</h1>";
    print "<h2>". $args{'purpose'} . "</h2>\n";
    print "</hgroup>\n";
    print "<ol class=\"code\">\n";
    print "<li>";
    print "<span class=\"type\">" . $args{'type'} . "</span> ";
    print "<span class=\"identifier\">" . $args{'struct'} . "</span> {";
    print "</li>\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	print "<li class=\"indent\">";
	if ($parameter =~ /^#/) {
		print "<span class=\"param\">" . $parameter ."</span>\n";
		print "</li>\n";
		next;
	}
	my $parameter_name = $parameter;
	$parameter_name =~ s/\[.*//;

	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
	$type = $args{'parametertypes'}{$parameter};
	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
	    # pointer-to-function
	    print "<span class=\"type\">$1</span> ";
	    print "<span class=\"param\">$parameter</span>";
	    print "<span class=\"type\">)</span> ";
	    print "(<span class=\"args\">$2</span>);";
	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
	    # bitfield
	    print "<span class=\"type\">$1</span> ";
	    print "<span class=\"param\">$parameter</span>";
	    print "<span class=\"bits\">$2</span>;";
	} else {
	    print "<span class=\"type\">$type</span> ";
	    print "<span class=\"param\">$parameter</span>;";
	}
	print "</li>\n";
    }
    print "<li>};</li>\n";
    print "</ol>\n";

    print "<section>\n";
    print "<h1>Members</h1>\n";
    print "<dl>\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	($parameter =~ /^#/) && next;

	my $parameter_name = $parameter;
	$parameter_name =~ s/\[.*//;

	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
	print "<dt>" . $parameter . "</dt>\n";
	print "<dd>";
	output_highlight($args{'parameterdescs'}{$parameter_name});
	print "</dd>\n";
    }
    print "</dl>\n";
    print "</section>\n";
    output_section_html5(@_);
    print "</article>\n";
}

# output function in html5
sub output_function_html5(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);
    my $count;
    my $html5id;

    $html5id = $args{'function'};
    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
    print "<article class=\"function\" id=\"func:". $html5id . "\">\n";
    print "<hgroup>\n";
    print "<h1>" . $args{'function'} . "</h1>";
    print "<h2>" . $args{'purpose'} . "</h2>\n";
    print "</hgroup>\n";
    print "<ol class=\"code\">\n";
    print "<li>";
    print "<span class=\"type\">" . $args{'functiontype'} . "</span> ";
    print "<span class=\"identifier\">" . $args{'function'} . "</span> (";
    print "</li>";
    $count = 0;
    foreach $parameter (@{$args{'parameterlist'}}) {
	print "<li class=\"indent\">";
	$type = $args{'parametertypes'}{$parameter};
	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
	    # pointer-to-function
	    print "<span class=\"type\">$1</span> ";
	    print "<span class=\"param\">$parameter</span>";
	    print "<span class=\"type\">)</span> ";
	    print "(<span class=\"args\">$2</span>)";
	} else {
	    print "<span class=\"type\">$type</span> ";
	    print "<span class=\"param\">$parameter</span>";
	}
	if ($count != $#{$args{'parameterlist'}}) {
	    $count++;
	    print ",";
	}
	print "</li>\n";
    }
    print "<li>)</li>\n";
    print "</ol>\n";

    print "<section>\n";
    print "<h1>Arguments</h1>\n";
    print "<p>\n";
    print "<dl>\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	my $parameter_name = $parameter;
	$parameter_name =~ s/\[.*//;

	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
	print "<dt>" . $parameter . "</dt>\n";
	print "<dd>";
	output_highlight($args{'parameterdescs'}{$parameter_name});
	print "</dd>\n";
    }
    print "</dl>\n";
    print "</section>\n";
    output_section_html5(@_);
    print "</article>\n";
}

# output DOC: block header in html5
sub output_blockhead_html5(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);
    my $count;
    my $html5id;

    foreach $section (@{$args{'sectionlist'}}) {
	$html5id = $section;
	$html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
	print "<article class=\"doc\" id=\"doc:". $html5id . "\">\n";
	print "<h1>$section</h1>\n";
	print "<p>\n";
	output_highlight($args{'sections'}{$section});
	print "</p>\n";
    }
    print "</article>\n";
}

sub output_section_xml(%) {
    my %args = %{$_[0]};
    my $section;
    # print out each section
    $lineprefix="   ";
    foreach $section (@{$args{'sectionlist'}}) {
	print "<refsect1>\n";
	print "<title>$section</title>\n";
	if ($section =~ m/EXAMPLE/i) {
	    print "<informalexample><programlisting>\n";
	    $output_preformatted = 1;
	} else {
	    print "<para>\n";
	}
	output_highlight($args{'sections'}{$section});
	$output_preformatted = 0;
	if ($section =~ m/EXAMPLE/i) {
	    print "</programlisting></informalexample>\n";
	} else {
	    print "</para>\n";
	}
	print "</refsect1>\n";
    }
}

# output function in XML DocBook
sub output_function_xml(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);
    my $count;
    my $id;

    $id = "API-" . $args{'function'};
    $id =~ s/[^A-Za-z0-9]/-/g;

    print "<refentry id=\"$id\">\n";
    print "<refentryinfo>\n";
    print " <title>LINUX</title>\n";
    print " <productname>Kernel Hackers Manual</productname>\n";
    print " <date>$man_date</date>\n";
    print "</refentryinfo>\n";
    print "<refmeta>\n";
    print " <refentrytitle><phrase>" . $args{'function'} . "</phrase></refentrytitle>\n";
    print " <manvolnum>9</manvolnum>\n";
    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
    print "</refmeta>\n";
    print "<refnamediv>\n";
    print " <refname>" . $args{'function'} . "</refname>\n";
    print " <refpurpose>\n";
    print "  ";
    output_highlight ($args{'purpose'});
    print " </refpurpose>\n";
    print "</refnamediv>\n";

    print "<refsynopsisdiv>\n";
    print " <title>Synopsis</title>\n";
    print "  <funcsynopsis><funcprototype>\n";
    print "   <funcdef>" . $args{'functiontype'} . " ";
    print "<function>" . $args{'function'} . " </function></funcdef>\n";

    $count = 0;
    if ($#{$args{'parameterlist'}} >= 0) {
	foreach $parameter (@{$args{'parameterlist'}}) {
	    $type = $args{'parametertypes'}{$parameter};
	    if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
		# pointer-to-function
		print "   <paramdef>$1<parameter>$parameter</parameter>)\n";
		print "     <funcparams>$2</funcparams></paramdef>\n";
	    } else {
		print "   <paramdef>" . $type;
		print " <parameter>$parameter</parameter></paramdef>\n";
	    }
	}
    } else {
	print "  <void/>\n";
    }
    print "  </funcprototype></funcsynopsis>\n";
    print "</refsynopsisdiv>\n";

    # print parameters
    print "<refsect1>\n <title>Arguments</title>\n";
    if ($#{$args{'parameterlist'}} >= 0) {
	print " <variablelist>\n";
	foreach $parameter (@{$args{'parameterlist'}}) {
	    my $parameter_name = $parameter;
	    $parameter_name =~ s/\[.*//;

	    print "  <varlistentry>\n   <term><parameter>$parameter</parameter></term>\n";
	    print "   <listitem>\n    <para>\n";
	    $lineprefix="     ";
	    output_highlight($args{'parameterdescs'}{$parameter_name});
	    print "    </para>\n   </listitem>\n  </varlistentry>\n";
	}
	print " </variablelist>\n";
    } else {
	print " <para>\n  None\n </para>\n";
    }
    print "</refsect1>\n";

    output_section_xml(@_);
    print "</refentry>\n\n";
}

# output struct in XML DocBook
sub output_struct_xml(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);
    my $id;

    $id = "API-struct-" . $args{'struct'};
    $id =~ s/[^A-Za-z0-9]/-/g;

    print "<refentry id=\"$id\">\n";
    print "<refentryinfo>\n";
    print " <title>LINUX</title>\n";
    print " <productname>Kernel Hackers Manual</productname>\n";
    print " <date>$man_date</date>\n";
    print "</refentryinfo>\n";
    print "<refmeta>\n";
    print " <refentrytitle><phrase>" . $args{'type'} . " " . $args{'struct'} . "</phrase></refentrytitle>\n";
    print " <manvolnum>9</manvolnum>\n";
    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
    print "</refmeta>\n";
    print "<refnamediv>\n";
    print " <refname>" . $args{'type'} . " " . $args{'struct'} . "</refname>\n";
    print " <refpurpose>\n";
    print "  ";
    output_highlight ($args{'purpose'});
    print " </refpurpose>\n";
    print "</refnamediv>\n";

    print "<refsynopsisdiv>\n";
    print " <title>Synopsis</title>\n";
    print "  <programlisting>\n";
    print $args{'type'} . " " . $args{'struct'} . " {\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	if ($parameter =~ /^#/) {
	    my $prm = $parameter;
	    # convert data read & converted thru xml_escape() into &xyz; format:
	    # This allows us to have #define macros interspersed in a struct.
	    $prm =~ s/\\\\\\/\&/g;
	    print "$prm\n";
	    next;
	}

	my $parameter_name = $parameter;
	$parameter_name =~ s/\[.*//;

	defined($args{'parameterdescs'}{$parameter_name}) || next;
	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
	$type = $args{'parametertypes'}{$parameter};
	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
	    # pointer-to-function
	    print "  $1 $parameter) ($2);\n";
	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
	    # bitfield
	    print "  $1 $parameter$2;\n";
	} else {
	    print "  " . $type . " " . $parameter . ";\n";
	}
    }
    print "};";
    print "  </programlisting>\n";
    print "</refsynopsisdiv>\n";

    print " <refsect1>\n";
    print "  <title>Members</title>\n";

    if ($#{$args{'parameterlist'}} >= 0) {
    print "  <variablelist>\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
      ($parameter =~ /^#/) && next;

      my $parameter_name = $parameter;
      $parameter_name =~ s/\[.*//;

      defined($args{'parameterdescs'}{$parameter_name}) || next;
      ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
      print "    <varlistentry>";
      print "      <term>$parameter</term>\n";
      print "      <listitem><para>\n";
      output_highlight($args{'parameterdescs'}{$parameter_name});
      print "      </para></listitem>\n";
      print "    </varlistentry>\n";
    }
    print "  </variablelist>\n";
    } else {
	print " <para>\n  None\n </para>\n";
    }
    print " </refsect1>\n";

    output_section_xml(@_);

    print "</refentry>\n\n";
}

# output enum in XML DocBook
sub output_enum_xml(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);
    my $count;
    my $id;

    $id = "API-enum-" . $args{'enum'};
    $id =~ s/[^A-Za-z0-9]/-/g;

    print "<refentry id=\"$id\">\n";
    print "<refentryinfo>\n";
    print " <title>LINUX</title>\n";
    print " <productname>Kernel Hackers Manual</productname>\n";
    print " <date>$man_date</date>\n";
    print "</refentryinfo>\n";
    print "<refmeta>\n";
    print " <refentrytitle><phrase>enum " . $args{'enum'} . "</phrase></refentrytitle>\n";
    print " <manvolnum>9</manvolnum>\n";
    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
    print "</refmeta>\n";
    print "<refnamediv>\n";
    print " <refname>enum " . $args{'enum'} . "</refname>\n";
    print " <refpurpose>\n";
    print "  ";
    output_highlight ($args{'purpose'});
    print " </refpurpose>\n";
    print "</refnamediv>\n";

    print "<refsynopsisdiv>\n";
    print " <title>Synopsis</title>\n";
    print "  <programlisting>\n";
    print "enum " . $args{'enum'} . " {\n";
    $count = 0;
    foreach $parameter (@{$args{'parameterlist'}}) {
	print "  $parameter";
	if ($count != $#{$args{'parameterlist'}}) {
	    $count++;
	    print ",";
	}
	print "\n";
    }
    print "};";
    print "  </programlisting>\n";
    print "</refsynopsisdiv>\n";

    print "<refsect1>\n";
    print " <title>Constants</title>\n";
    print "  <variablelist>\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
      my $parameter_name = $parameter;
      $parameter_name =~ s/\[.*//;

      print "    <varlistentry>";
      print "      <term>$parameter</term>\n";
      print "      <listitem><para>\n";
      output_highlight($args{'parameterdescs'}{$parameter_name});
      print "      </para></listitem>\n";
      print "    </varlistentry>\n";
    }
    print "  </variablelist>\n";
    print "</refsect1>\n";

    output_section_xml(@_);

    print "</refentry>\n\n";
}

# output typedef in XML DocBook
sub output_typedef_xml(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);
    my $id;

    $id = "API-typedef-" . $args{'typedef'};
    $id =~ s/[^A-Za-z0-9]/-/g;

    print "<refentry id=\"$id\">\n";
    print "<refentryinfo>\n";
    print " <title>LINUX</title>\n";
    print " <productname>Kernel Hackers Manual</productname>\n";
    print " <date>$man_date</date>\n";
    print "</refentryinfo>\n";
    print "<refmeta>\n";
    print " <refentrytitle><phrase>typedef " . $args{'typedef'} . "</phrase></refentrytitle>\n";
    print " <manvolnum>9</manvolnum>\n";
    print "</refmeta>\n";
    print "<refnamediv>\n";
    print " <refname>typedef " . $args{'typedef'} . "</refname>\n";
    print " <refpurpose>\n";
    print "  ";
    output_highlight ($args{'purpose'});
    print " </refpurpose>\n";
    print "</refnamediv>\n";

    print "<refsynopsisdiv>\n";
    print " <title>Synopsis</title>\n";
    print "  <synopsis>typedef " . $args{'typedef'} . ";</synopsis>\n";
    print "</refsynopsisdiv>\n";

    output_section_xml(@_);

    print "</refentry>\n\n";
}

# output in XML DocBook
sub output_blockhead_xml(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);
    my $count;

    my $id = $args{'module'};
    $id =~ s/[^A-Za-z0-9]/-/g;

    # print out each section
    $lineprefix="   ";
    foreach $section (@{$args{'sectionlist'}}) {
	if (!$args{'content-only'}) {
		print "<refsect1>\n <title>$section</title>\n";
	}
	if ($section =~ m/EXAMPLE/i) {
	    print "<example><para>\n";
	    $output_preformatted = 1;
	} else {
	    print "<para>\n";
	}
	output_highlight($args{'sections'}{$section});
	$output_preformatted = 0;
	if ($section =~ m/EXAMPLE/i) {
	    print "</para></example>\n";
	} else {
	    print "</para>";
	}
	if (!$args{'content-only'}) {
		print "\n</refsect1>\n";
	}
    }

    print "\n\n";
}

# output in XML DocBook
sub output_function_gnome {
    my %args = %{$_[0]};
    my ($parameter, $section);
    my $count;
    my $id;

    $id = $args{'module'} . "-" . $args{'function'};
    $id =~ s/[^A-Za-z0-9]/-/g;

    print "<sect2>\n";
    print " <title id=\"$id\">" . $args{'function'} . "</title>\n";

    print "  <funcsynopsis>\n";
    print "   <funcdef>" . $args{'functiontype'} . " ";
    print "<function>" . $args{'function'} . " ";
    print "</function></funcdef>\n";

    $count = 0;
    if ($#{$args{'parameterlist'}} >= 0) {
	foreach $parameter (@{$args{'parameterlist'}}) {
	    $type = $args{'parametertypes'}{$parameter};
	    if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
		# pointer-to-function
		print "   <paramdef>$1 <parameter>$parameter</parameter>)\n";
		print "     <funcparams>$2</funcparams></paramdef>\n";
	    } else {
		print "   <paramdef>" . $type;
		print " <parameter>$parameter</parameter></paramdef>\n";
	    }
	}
    } else {
	print "  <void>\n";
    }
    print "  </funcsynopsis>\n";
    if ($#{$args{'parameterlist'}} >= 0) {
	print " <informaltable pgwide=\"1\" frame=\"none\" role=\"params\">\n";
	print "<tgroup cols=\"2\">\n";
	print "<colspec colwidth=\"2*\">\n";
	print "<colspec colwidth=\"8*\">\n";
	print "<tbody>\n";
	foreach $parameter (@{$args{'parameterlist'}}) {
	    my $parameter_name = $parameter;
	    $parameter_name =~ s/\[.*//;

	    print "  <row><entry align=\"right\"><parameter>$parameter</parameter></entry>\n";
	    print "   <entry>\n";
	    $lineprefix="     ";
	    output_highlight($args{'parameterdescs'}{$parameter_name});
	    print "    </entry></row>\n";
	}
	print " </tbody></tgroup></informaltable>\n";
    } else {
	print " <para>\n  None\n </para>\n";
    }

    # print out each section
    $lineprefix="   ";
    foreach $section (@{$args{'sectionlist'}}) {
	print "<simplesect>\n <title>$section</title>\n";
	if ($section =~ m/EXAMPLE/i) {
	    print "<example><programlisting>\n";
	    $output_preformatted = 1;
	} else {
	}
	print "<para>\n";
	output_highlight($args{'sections'}{$section});
	$output_preformatted = 0;
	print "</para>\n";
	if ($section =~ m/EXAMPLE/i) {
	    print "</programlisting></example>\n";
	} else {
	}
	print " </simplesect>\n";
    }

    print "</sect2>\n\n";
}

##
# output function in man
sub output_function_man(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);
    my $count;

    print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";

    print ".SH NAME\n";
    print $args{'function'} . " \\- " . $args{'purpose'} . "\n";

    print ".SH SYNOPSIS\n";
    if ($args{'functiontype'} ne "") {
	print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
    } else {
	print ".B \"" . $args{'function'} . "\n";
    }
    $count = 0;
    my $parenth = "(";
    my $post = ",";
    foreach my $parameter (@{$args{'parameterlist'}}) {
	if ($count == $#{$args{'parameterlist'}}) {
	    $post = ");";
	}
	$type = $args{'parametertypes'}{$parameter};
	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
	    # pointer-to-function
	    print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
	} else {
	    $type =~ s/([^\*])$/$1 /;
	    print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
	}
	$count++;
	$parenth = "";
    }

    print ".SH ARGUMENTS\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	my $parameter_name = $parameter;
	$parameter_name =~ s/\[.*//;

	print ".IP \"" . $parameter . "\" 12\n";
	output_highlight($args{'parameterdescs'}{$parameter_name});
    }
    foreach $section (@{$args{'sectionlist'}}) {
	print ".SH \"", uc $section, "\"\n";
	output_highlight($args{'sections'}{$section});
    }
}

##
# output enum in man
sub output_enum_man(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);
    my $count;

    print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";

    print ".SH NAME\n";
    print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";

    print ".SH SYNOPSIS\n";
    print "enum " . $args{'enum'} . " {\n";
    $count = 0;
    foreach my $parameter (@{$args{'parameterlist'}}) {
	print ".br\n.BI \"    $parameter\"\n";
	if ($count == $#{$args{'parameterlist'}}) {
	    print "\n};\n";
	    last;
	}
	else {
	    print ", \n.br\n";
	}
	$count++;
    }

    print ".SH Constants\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	my $parameter_name = $parameter;
	$parameter_name =~ s/\[.*//;

	print ".IP \"" . $parameter . "\" 12\n";
	output_highlight($args{'parameterdescs'}{$parameter_name});
    }
    foreach $section (@{$args{'sectionlist'}}) {
	print ".SH \"$section\"\n";
	output_highlight($args{'sections'}{$section});
    }
}

##
# output struct in man
sub output_struct_man(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);

    print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";

    print ".SH NAME\n";
    print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";

    print ".SH SYNOPSIS\n";
    print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";

    foreach my $parameter (@{$args{'parameterlist'}}) {
	if ($parameter =~ /^#/) {
	    print ".BI \"$parameter\"\n.br\n";
	    next;
	}
	my $parameter_name = $parameter;
	$parameter_name =~ s/\[.*//;

	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
	$type = $args{'parametertypes'}{$parameter};
	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
	    # pointer-to-function
	    print ".BI \"    " . $1 . "\" " . $parameter . " \") (" . $2 . ")" . "\"\n;\n";
	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
	    # bitfield
	    print ".BI \"    " . $1 . "\ \" " . $parameter . $2 . " \"" . "\"\n;\n";
	} else {
	    $type =~ s/([^\*])$/$1 /;
	    print ".BI \"    " . $type . "\" " . $parameter . " \"" . "\"\n;\n";
	}
	print "\n.br\n";
    }
    print "};\n.br\n";

    print ".SH Members\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	($parameter =~ /^#/) && next;

	my $parameter_name = $parameter;
	$parameter_name =~ s/\[.*//;

	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
	print ".IP \"" . $parameter . "\" 12\n";
	output_highlight($args{'parameterdescs'}{$parameter_name});
    }
    foreach $section (@{$args{'sectionlist'}}) {
	print ".SH \"$section\"\n";
	output_highlight($args{'sections'}{$section});
    }
}

##
# output typedef in man
sub output_typedef_man(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);

    print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";

    print ".SH NAME\n";
    print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";

    foreach $section (@{$args{'sectionlist'}}) {
	print ".SH \"$section\"\n";
	output_highlight($args{'sections'}{$section});
    }
}

sub output_blockhead_man(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);
    my $count;

    print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";

    foreach $section (@{$args{'sectionlist'}}) {
	print ".SH \"$section\"\n";
	output_highlight($args{'sections'}{$section});
    }
}

##
# output in text
sub output_function_text(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);
    my $start;

    print "Name:\n\n";
    print $args{'function'} . " - " . $args{'purpose'} . "\n";

    print "\nSynopsis:\n\n";
    if ($args{'functiontype'} ne "") {
	$start = $args{'functiontype'} . " " . $args{'function'} . " (";
    } else {
	$start = $args{'function'} . " (";
    }
    print $start;

    my $count = 0;
    foreach my $parameter (@{$args{'parameterlist'}}) {
	$type = $args{'parametertypes'}{$parameter};
	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
	    # pointer-to-function
	    print $1 . $parameter . ") (" . $2;
	} else {
	    print $type . " " . $parameter;
	}
	if ($count != $#{$args{'parameterlist'}}) {
	    $count++;
	    print ",\n";
	    print " " x length($start);
	} else {
	    print ");\n\n";
	}
    }

    print "Arguments:\n\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	my $parameter_name = $parameter;
	$parameter_name =~ s/\[.*//;

	print $parameter . "\n\t" . $args{'parameterdescs'}{$parameter_name} . "\n";
    }
    output_section_text(@_);
}

#output sections in text
sub output_section_text(%) {
    my %args = %{$_[0]};
    my $section;

    print "\n";
    foreach $section (@{$args{'sectionlist'}}) {
	print "$section:\n\n";
	output_highlight($args{'sections'}{$section});
    }
    print "\n\n";
}

# output enum in text
sub output_enum_text(%) {
    my %args = %{$_[0]};
    my ($parameter);
    my $count;
    print "Enum:\n\n";

    print "enum " . $args{'enum'} . " - " . $args{'purpose'} . "\n\n";
    print "enum " . $args{'enum'} . " {\n";
    $count = 0;
    foreach $parameter (@{$args{'parameterlist'}}) {
	print "\t$parameter";
	if ($count != $#{$args{'parameterlist'}}) {
	    $count++;
	    print ",";
	}
	print "\n";
    }
    print "};\n\n";

    print "Constants:\n\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	print "$parameter\n\t";
	print $args{'parameterdescs'}{$parameter} . "\n";
    }

    output_section_text(@_);
}

# output typedef in text
sub output_typedef_text(%) {
    my %args = %{$_[0]};
    my ($parameter);
    my $count;
    print "Typedef:\n\n";

    print "typedef " . $args{'typedef'} . " - " . $args{'purpose'} . "\n";
    output_section_text(@_);
}

# output struct as text
sub output_struct_text(%) {
    my %args = %{$_[0]};
    my ($parameter);

    print $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "\n\n";
    print $args{'type'} . " " . $args{'struct'} . " {\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	if ($parameter =~ /^#/) {
	    print "$parameter\n";
	    next;
	}

	my $parameter_name = $parameter;
	$parameter_name =~ s/\[.*//;

	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
	$type = $args{'parametertypes'}{$parameter};
	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
	    # pointer-to-function
	    print "\t$1 $parameter) ($2);\n";
	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
	    # bitfield
	    print "\t$1 $parameter$2;\n";
	} else {
	    print "\t" . $type . " " . $parameter . ";\n";
	}
    }
    print "};\n\n";

    print "Members:\n\n";
    foreach $parameter (@{$args{'parameterlist'}}) {
	($parameter =~ /^#/) && next;

	my $parameter_name = $parameter;
	$parameter_name =~ s/\[.*//;

	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
	print "$parameter\n\t";
	print $args{'parameterdescs'}{$parameter_name} . "\n";
    }
    print "\n";
    output_section_text(@_);
}

sub output_blockhead_text(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);

    foreach $section (@{$args{'sectionlist'}}) {
	print " $section:\n";
	print "    -> ";
	output_highlight($args{'sections'}{$section});
    }
}

## list mode output functions

sub output_function_list(%) {
    my %args = %{$_[0]};

    print $args{'function'} . "\n";
}

# output enum in list
sub output_enum_list(%) {
    my %args = %{$_[0]};
    print $args{'enum'} . "\n";
}

# output typedef in list
sub output_typedef_list(%) {
    my %args = %{$_[0]};
    print $args{'typedef'} . "\n";
}

# output struct as list
sub output_struct_list(%) {
    my %args = %{$_[0]};

    print $args{'struct'} . "\n";
}

sub output_blockhead_list(%) {
    my %args = %{$_[0]};
    my ($parameter, $section);

    foreach $section (@{$args{'sectionlist'}}) {
	print "DOC: $section\n";
    }
}

##
# generic output function for all types (function, struct/union, typedef, enum);
# calls the generated, variable output_ function name based on
# functype and output_mode
sub output_declaration {
    no strict 'refs';
    my $name = shift;
    my $functype = shift;
    my $func = "output_${functype}_$output_mode";
    if (($function_only==0) ||
	( $function_only == 1 && defined($function_table{$name})) ||
	( $function_only == 2 && !defined($function_table{$name})))
    {
	&$func(@_);
	$section_counter++;
    }
}

##
# generic output function - calls the right one based on current output mode.
sub output_blockhead {
    no strict 'refs';
    my $func = "output_blockhead_" . $output_mode;
    &$func(@_);
    $section_counter++;
}

##
# takes a declaration (struct, union, enum, typedef) and
# invokes the right handler. NOT called for functions.
sub dump_declaration($$) {
    no strict 'refs';
    my ($prototype, $file) = @_;
    my $func = "dump_" . $decl_type;
    &$func(@_);
}

sub dump_union($$) {
    dump_struct(@_);
}

sub dump_struct($$) {
    my $x = shift;
    my $file = shift;
    my $nested;

    if ($x =~ /(struct|union)\s+(\w+)\s*{(.*)}/) {
	#my $decl_type = $1;
	$declaration_name = $2;
	my $members = $3;

	# ignore embedded structs or unions
	$members =~ s/({.*})//g;
	$nested = $1;

	# ignore members marked private:
	$members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gos;
	$members =~ s/\/\*\s*private:.*//gos;
	# strip comments:
	$members =~ s/\/\*.*?\*\///gos;
	$nested =~ s/\/\*.*?\*\///gos;
	# strip kmemcheck_bitfield_{begin,end}.*;
	$members =~ s/kmemcheck_bitfield_.*?;//gos;
	# strip attributes
	$members =~ s/__aligned\s*\(.+\)//gos;

	create_parameterlist($members, ';', $file);
	check_sections($file, $declaration_name, "struct", $sectcheck, $struct_actual, $nested);

	output_declaration($declaration_name,
			   'struct',
			   {'struct' => $declaration_name,
			    'module' => $modulename,
			    'parameterlist' => \@parameterlist,
			    'parameterdescs' => \%parameterdescs,
			    'parametertypes' => \%parametertypes,
			    'sectionlist' => \@sectionlist,
			    'sections' => \%sections,
			    'purpose' => $declaration_purpose,
			    'type' => $decl_type
			   });
    }
    else {
	print STDERR "Error(${file}:$.): Cannot parse struct or union!\n";
	++$errors;
    }
}

sub dump_enum($$) {
    my $x = shift;
    my $file = shift;

    $x =~ s@/\*.*?\*/@@gos;	# strip comments.
    $x =~ s/^#\s*define\s+.*$//; # strip #define macros inside enums

    if ($x =~ /enum\s+(\w+)\s*{(.*)}/) {
	$declaration_name = $1;
	my $members = $2;

	foreach my $arg (split ',', $members) {
	    $arg =~ s/^\s*(\w+).*/$1/;
	    push @parameterlist, $arg;
	    if (!$parameterdescs{$arg}) {
		$parameterdescs{$arg} = $undescribed;
		print STDERR "Warning(${file}:$.): Enum value '$arg' ".
		    "not described in enum '$declaration_name'\n";
	    }

	}

	output_declaration($declaration_name,
			   'enum',
			   {'enum' => $declaration_name,
			    'module' => $modulename,
			    'parameterlist' => \@parameterlist,
			    'parameterdescs' => \%parameterdescs,
			    'sectionlist' => \@sectionlist,
			    'sections' => \%sections,
			    'purpose' => $declaration_purpose
			   });
    }
    else {
	print STDERR "Error(${file}:$.): Cannot parse enum!\n";
	++$errors;
    }
}

sub dump_typedef($$) {
    my $x = shift;
    my $file = shift;

    $x =~ s@/\*.*?\*/@@gos;	# strip comments.
    while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
	$x =~ s/\(*.\)\s*;$/;/;
	$x =~ s/\[*.\]\s*;$/;/;
    }

    if ($x =~ /typedef.*\s+(\w+)\s*;/) {
	$declaration_name = $1;

	output_declaration($declaration_name,
			   'typedef',
			   {'typedef' => $declaration_name,
			    'module' => $modulename,
			    'sectionlist' => \@sectionlist,
			    'sections' => \%sections,
			    'purpose' => $declaration_purpose
			   });
    }
    else {
	print STDERR "Error(${file}:$.): Cannot parse typedef!\n";
	++$errors;
    }
}

sub save_struct_actual($) {
    my $actual = shift;

    # strip all spaces from the actual param so that it looks like one string item
    $actual =~ s/\s*//g;
    $struct_actual = $struct_actual . $actual . " ";
}

sub create_parameterlist($$$) {
    my $args = shift;
    my $splitter = shift;
    my $file = shift;
    my $type;
    my $param;

    # temporarily replace commas inside function pointer definition
    while ($args =~ /(\([^\),]+),/) {
	$args =~ s/(\([^\),]+),/$1#/g;
    }

    foreach my $arg (split($splitter, $args)) {
	# strip comments
	$arg =~ s/\/\*.*\*\///;
	# strip leading/trailing spaces
	$arg =~ s/^\s*//;
	$arg =~ s/\s*$//;
	$arg =~ s/\s+/ /;

	if ($arg =~ /^#/) {
	    # Treat preprocessor directive as a typeless variable just to fill
	    # corresponding data structures "correctly". Catch it later in
	    # output_* subs.
	    push_parameter($arg, "", $file);
	} elsif ($arg =~ m/\(.+\)\s*\(/) {
	    # pointer-to-function
	    $arg =~ tr/#/,/;
	    $arg =~ m/[^\(]+\(\*?\s*(\w*)\s*\)/;
	    $param = $1;
	    $type = $arg;
	    $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
	    save_struct_actual($param);
	    push_parameter($param, $type, $file);
	} elsif ($arg) {
	    $arg =~ s/\s*:\s*/:/g;
	    $arg =~ s/\s*\[/\[/g;

	    my @args = split('\s*,\s*', $arg);
	    if ($args[0] =~ m/\*/) {
		$args[0] =~ s/(\*+)\s*/ $1/;
	    }

	    my @first_arg;
	    if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
		    shift @args;
		    push(@first_arg, split('\s+', $1));
		    push(@first_arg, $2);
	    } else {
		    @first_arg = split('\s+', shift @args);
	    }

	    unshift(@args, pop @first_arg);
	    $type = join " ", @first_arg;

	    foreach $param (@args) {
		if ($param =~ m/^(\*+)\s*(.*)/) {
		    save_struct_actual($2);
		    push_parameter($2, "$type $1", $file);
		}
		elsif ($param =~ m/(.*?):(\d+)/) {
		    if ($type ne "") { # skip unnamed bit-fields
			save_struct_actual($1);
			push_parameter($1, "$type:$2", $file)
		    }
		}
		else {
		    save_struct_actual($param);
		    push_parameter($param, $type, $file);
		}
	    }
	}
    }
}

sub push_parameter($$$) {
	my $param = shift;
	my $type = shift;
	my $file = shift;

	if (($anon_struct_union == 1) && ($type eq "") &&
	    ($param eq "}")) {
		return;		# ignore the ending }; from anon. struct/union
	}

	$anon_struct_union = 0;
	my $param_name = $param;
	$param_name =~ s/\[.*//;

	if ($type eq "" && $param =~ /\.\.\.$/)
	{
	    if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
		$parameterdescs{$param} = "variable arguments";
	    }
	}
	elsif ($type eq "" && ($param eq "" or $param eq "void"))
	{
	    $param="void";
	    $parameterdescs{void} = "no arguments";
	}
	elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
	# handle unnamed (anonymous) union or struct:
	{
		$type = $param;
		$param = "{unnamed_" . $param . "}";
		$parameterdescs{$param} = "anonymous\n";
		$anon_struct_union = 1;
	}

	# warn if parameter has no description
	# (but ignore ones starting with # as these are not parameters
	# but inline preprocessor statements);
	# also ignore unnamed structs/unions;
	if (!$anon_struct_union) {
	if (!defined $parameterdescs{$param_name} && $param_name !~ /^#/) {

	    $parameterdescs{$param_name} = $undescribed;

	    if (($type eq 'function') || ($type eq 'enum')) {
		print STDERR "Warning(${file}:$.): Function parameter ".
		    "or member '$param' not " .
		    "described in '$declaration_name'\n";
	    }
	    print STDERR "Warning(${file}:$.):" .
			 " No description found for parameter '$param'\n";
	    ++$warnings;
	}
	}

	$param = xml_escape($param);

	# strip spaces from $param so that it is one continuous string
	# on @parameterlist;
	# this fixes a problem where check_sections() cannot find
	# a parameter like "addr[6 + 2]" because it actually appears
	# as "addr[6", "+", "2]" on the parameter list;
	# but it's better to maintain the param string unchanged for output,
	# so just weaken the string compare in check_sections() to ignore
	# "[blah" in a parameter string;
	###$param =~ s/\s*//g;
	push @parameterlist, $param;
	$parametertypes{$param} = $type;
}

sub check_sections($$$$$$) {
	my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck, $nested) = @_;
	my @sects = split ' ', $sectcheck;
	my @prms = split ' ', $prmscheck;
	my $err;
	my ($px, $sx);
	my $prm_clean;		# strip trailing "[array size]" and/or beginning "*"

	foreach $sx (0 .. $#sects) {
		$err = 1;
		foreach $px (0 .. $#prms) {
			$prm_clean = $prms[$px];
			$prm_clean =~ s/\[.*\]//;
			$prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
			# ignore array size in a parameter string;
			# however, the original param string may contain
			# spaces, e.g.:  addr[6 + 2]
			# and this appears in @prms as "addr[6" since the
			# parameter list is split at spaces;
			# hence just ignore "[..." for the sections check;
			$prm_clean =~ s/\[.*//;

			##$prm_clean =~ s/^\**//;
			if ($prm_clean eq $sects[$sx]) {
				$err = 0;
				last;
			}
		}
		if ($err) {
			if ($decl_type eq "function") {
				print STDERR "Warning(${file}:$.): " .
					"Excess function parameter " .
					"'$sects[$sx]' " .
					"description in '$decl_name'\n";
				++$warnings;
			} else {
				if ($nested !~ m/\Q$sects[$sx]\E/) {
				    print STDERR "Warning(${file}:$.): " .
					"Excess struct/union/enum/typedef member " .
					"'$sects[$sx]' " .
					"description in '$decl_name'\n";
				    ++$warnings;
				}
			}
		}
	}
}

##
# Checks the section describing the return value of a function.
sub check_return_section {
        my $file = shift;
        my $declaration_name = shift;
        my $return_type = shift;

        # Ignore an empty return type (It's a macro)
        # Ignore functions with a "void" return type. (But don't ignore "void *")
        if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) {
                return;
        }

        if (!defined($sections{$section_return}) ||
            $sections{$section_return} eq "") {
                print STDERR "Warning(${file}:$.): " .
                        "No description found for return value of " .
                        "'$declaration_name'\n";
                ++$warnings;
        }
}

##
# takes a function prototype and the name of the current file being
# processed and spits out all the details stored in the global
# arrays/hashes.
sub dump_function($$) {
    my $prototype = shift;
    my $file = shift;

    $prototype =~ s/^static +//;
    $prototype =~ s/^extern +//;
    $prototype =~ s/^asmlinkage +//;
    $prototype =~ s/^inline +//;
    $prototype =~ s/^__inline__ +//;
    $prototype =~ s/^__inline +//;
    $prototype =~ s/^__always_inline +//;
    $prototype =~ s/^noinline +//;
    $prototype =~ s/__init +//;
    $prototype =~ s/__init_or_module +//;
    $prototype =~ s/__must_check +//;
    $prototype =~ s/__weak +//;
    $prototype =~ s/^#\s*define\s+//; #ak added
    $prototype =~ s/__attribute__\s*\(\([a-z,]*\)\)//;

    # Yes, this truly is vile.  We are looking for:
    # 1. Return type (may be nothing if we're looking at a macro)
    # 2. Function name
    # 3. Function parameters.
    #
    # All the while we have to watch out for function pointer parameters
    # (which IIRC is what the two sections are for), C types (these
    # regexps don't even start to express all the possibilities), and
    # so on.
    #
    # If you mess with these regexps, it's a good idea to check that
    # the following functions' documentation still comes out right:
    # - parport_register_device (function pointer parameters)
    # - atomic_set (macro)
    # - pci_match_device, __copy_to_user (long return type)

    if ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
	$prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
	$prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
	$prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
	$prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
	$prototype =~ m/^(\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
	$prototype =~ m/^(\w+\s+\w+\s*\*\s*\w+\s*\*\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/)  {
	$return_type = $1;
	$declaration_name = $2;
	my $args = $3;

	create_parameterlist($args, ',', $file);
    } else {
	print STDERR "Error(${file}:$.): cannot understand prototype: '$prototype'\n";
	++$errors;
	return;
    }

	my $prms = join " ", @parameterlist;
	check_sections($file, $declaration_name, "function", $sectcheck, $prms, "");

        # This check emits a lot of warnings at the moment, because many
        # functions don't have a 'Return' doc section. So until the number
        # of warnings goes sufficiently down, the check is only performed in
        # verbose mode.
        # TODO: always perform the check.
        if ($verbose) {
                check_return_section($file, $declaration_name, $return_type);
        }

    output_declaration($declaration_name,
		       'function',
		       {'function' => $declaration_name,
			'module' => $modulename,
			'functiontype' => $return_type,
			'parameterlist' => \@parameterlist,
			'parameterdescs' => \%parameterdescs,
			'parametertypes' => \%parametertypes,
			'sectionlist' => \@sectionlist,
			'sections' => \%sections,
			'purpose' => $declaration_purpose
		       });
}

sub reset_state {
    $function = "";
    %constants = ();
    %parameterdescs = ();
    %parametertypes = ();
    @parameterlist = ();
    %sections = ();
    @sectionlist = ();
    $sectcheck = "";
    $struct_actual = "";
    $prototype = "";

    $state = 0;
}

sub tracepoint_munge($) {
	my $file = shift;
	my $tracepointname = 0;
	my $tracepointargs = 0;

	if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
		$tracepointname = $1;
	}
	if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
		$tracepointname = $1;
	}
	if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
		$tracepointname = $2;
	}
	$tracepointname =~ s/^\s+//; #strip leading whitespace
	if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
		$tracepointargs = $1;
	}
	if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
		print STDERR "Warning(${file}:$.): Unrecognized tracepoint format: \n".
			     "$prototype\n";
	} else {
		$prototype = "static inline void trace_$tracepointname($tracepointargs)";
	}
}

sub syscall_munge() {
	my $void = 0;

	$prototype =~ s@[\r\n\t]+@ @gos; # strip newlines/CR's/tabs
##	if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
	if ($prototype =~ m/SYSCALL_DEFINE0/) {
		$void = 1;
##		$prototype = "long sys_$1(void)";
	}

	$prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
	if ($prototype =~ m/long (sys_.*?),/) {
		$prototype =~ s/,/\(/;
	} elsif ($void) {
		$prototype =~ s/\)/\(void\)/;
	}

	# now delete all of the odd-number commas in $prototype
	# so that arg types & arg names don't have a comma between them
	my $count = 0;
	my $len = length($prototype);
	if ($void) {
		$len = 0;	# skip the for-loop
	}
	for (my $ix = 0; $ix < $len; $ix++) {
		if (substr($prototype, $ix, 1) eq ',') {
			$count++;
			if ($count % 2 == 1) {
				substr($prototype, $ix, 1) = ' ';
			}
		}
	}
}

sub process_state3_function($$) {
    my $x = shift;
    my $file = shift;

    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line

    if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
	# do nothing
    }
    elsif ($x =~ /([^\{]*)/) {
	$prototype .= $1;
    }

    if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
	$prototype =~ s@/\*.*?\*/@@gos;	# strip comments.
	$prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
	$prototype =~ s@^\s+@@gos; # strip leading spaces
	if ($prototype =~ /SYSCALL_DEFINE/) {
		syscall_munge();
	}
	if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
	    $prototype =~ /DEFINE_SINGLE_EVENT/)
	{
		tracepoint_munge($file);
	}
	dump_function($prototype, $file);
	reset_state();
    }
}

sub process_state3_type($$) {
    my $x = shift;
    my $file = shift;

    $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
    $x =~ s@^\s+@@gos; # strip leading spaces
    $x =~ s@\s+$@@gos; # strip trailing spaces
    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line

    if ($x =~ /^#/) {
	# To distinguish preprocessor directive from regular declaration later.
	$x .= ";";
    }

    while (1) {
	if ( $x =~ /([^{};]*)([{};])(.*)/ ) {
	    $prototype .= $1 . $2;
	    ($2 eq '{') && $brcount++;
	    ($2 eq '}') && $brcount--;
	    if (($2 eq ';') && ($brcount == 0)) {
		dump_declaration($prototype, $file);
		reset_state();
		last;
	    }
	    $x = $3;
	} else {
	    $prototype .= $x;
	    last;
	}
    }
}

# xml_escape: replace <, >, and & in the text stream;
#
# however, formatting controls that are generated internally/locally in the
# kernel-doc script are not escaped here; instead, they begin life like
# $blankline_html (4 of '\' followed by a mnemonic + ':'), then these strings
# are converted to their mnemonic-expected output, without the 4 * '\' & ':',
# just before actual output; (this is done by local_unescape())
sub xml_escape($) {
	my $text = shift;
	if (($output_mode eq "text") || ($output_mode eq "man")) {
		return $text;
	}
	$text =~ s/\&/\\\\\\amp;/g;
	$text =~ s/\</\\\\\\lt;/g;
	$text =~ s/\>/\\\\\\gt;/g;
	return $text;
}

# convert local escape strings to html
# local escape strings look like:  '\\\\menmonic:' (that's 4 backslashes)
sub local_unescape($) {
	my $text = shift;
	if (($output_mode eq "text") || ($output_mode eq "man")) {
		return $text;
	}
	$text =~ s/\\\\\\\\lt:/</g;
	$text =~ s/\\\\\\\\gt:/>/g;
	return $text;
}

sub process_file($) {
    my $file;
    my $identifier;
    my $func;
    my $descr;
    my $in_purpose = 0;
    my $initial_section_counter = $section_counter;

    if (defined($ENV{'SRCTREE'})) {
	$file = "$ENV{'SRCTREE'}" . "/" . "@_";
    }
    else {
	$file = "@_";
    }
    if (defined($source_map{$file})) {
	$file = $source_map{$file};
    }

    if (!open(IN,"<$file")) {
	print STDERR "Error: Cannot open file $file\n";
	++$errors;
	return;
    }

    $. = 1;

    $section_counter = 0;
    while (<IN>) {
	while (s/\\\s*$//) {
	    $_ .= <IN>;
	}
	if ($state == 0) {
	    if (/$doc_start/o) {
		$state = 1;		# next line is always the function name
		$in_doc_sect = 0;
	    }
	} elsif ($state == 1) {	# this line is the function name (always)
	    if (/$doc_block/o) {
		$state = 4;
		$contents = "";
		if ( $1 eq "" ) {
			$section = $section_intro;
		} else {
			$section = $1;
		}
	    }
	    elsif (/$doc_decl/o) {
		$identifier = $1;
		if (/\s*([\w\s]+?)\s*-/) {
		    $identifier = $1;
		}

		$state = 2;
		if (/-(.*)/) {
		    # strip leading/trailing/multiple spaces
		    $descr= $1;
		    $descr =~ s/^\s*//;
		    $descr =~ s/\s*$//;
		    $descr =~ s/\s+/ /g;
		    $declaration_purpose = xml_escape($descr);
		    $in_purpose = 1;
		} else {
		    $declaration_purpose = "";
		}

		if (($declaration_purpose eq "") && $verbose) {
			print STDERR "Warning(${file}:$.): missing initial short description on line:\n";
			print STDERR $_;
			++$warnings;
		}

		if ($identifier =~ m/^struct/) {
		    $decl_type = 'struct';
		} elsif ($identifier =~ m/^union/) {
		    $decl_type = 'union';
		} elsif ($identifier =~ m/^enum/) {
		    $decl_type = 'enum';
		} elsif ($identifier =~ m/^typedef/) {
		    $decl_type = 'typedef';
		} else {
		    $decl_type = 'function';
		}

		if ($verbose) {
		    print STDERR "Info(${file}:$.): Scanning doc for $identifier\n";
		}
	    } else {
		print STDERR "Warning(${file}:$.): Cannot understand $_ on line $.",
		" - I thought it was a doc line\n";
		++$warnings;
		$state = 0;
	    }
	} elsif ($state == 2) {	# look for head: lines, and include content
	    if (/$doc_sect/o) {
		$newsection = $1;
		$newcontents = $2;

		if (($contents ne "") && ($contents ne "\n")) {
		    if (!$in_doc_sect && $verbose) {
			print STDERR "Warning(${file}:$.): contents before sections\n";
			++$warnings;
		    }
		    dump_section($file, $section, xml_escape($contents));
		    $section = $section_default;
		}

		$in_doc_sect = 1;
		$in_purpose = 0;
		$contents = $newcontents;
		if ($contents ne "") {
		    while ((substr($contents, 0, 1) eq " ") ||
			substr($contents, 0, 1) eq "\t") {
			    $contents = substr($contents, 1);
		    }
		    $contents .= "\n";
		}
		$section = $newsection;
	    } elsif (/$doc_end/) {

		if (($contents ne "") && ($contents ne "\n")) {
		    dump_section($file, $section, xml_escape($contents));
		    $section = $section_default;
		    $contents = "";
		}
		# look for doc_com + <text> + doc_end:
		if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
		    print STDERR "Warning(${file}:$.): suspicious ending line: $_";
		    ++$warnings;
		}

		$prototype = "";
		$state = 3;
		$brcount = 0;
#		print STDERR "end of doc comment, looking for prototype\n";
	    } elsif (/$doc_content/) {
		# miguel-style comment kludge, look for blank lines after
		# @parameter line to signify start of description
		if ($1 eq "") {
		    if ($section =~ m/^@/ || $section eq $section_context) {
			dump_section($file, $section, xml_escape($contents));
			$section = $section_default;
			$contents = "";
		    } else {
			$contents .= "\n";
		    }
		    $in_purpose = 0;
		} elsif ($in_purpose == 1) {
		    # Continued declaration purpose
		    chomp($declaration_purpose);
		    $declaration_purpose .= " " . xml_escape($1);
		    $declaration_purpose =~ s/\s+/ /g;
		} else {
		    $contents .= $1 . "\n";
		}
	    } else {
		# i dont know - bad line?  ignore.
		print STDERR "Warning(${file}:$.): bad line: $_";
		++$warnings;
	    }
	} elsif ($state == 3) {	# scanning for function '{' (end of prototype)
	    if ($decl_type eq 'function') {
		process_state3_function($_, $file);
	    } else {
		process_state3_type($_, $file);
	    }
	} elsif ($state == 4) {
		# Documentation block
		if (/$doc_block/) {
			dump_doc_section($file, $section, xml_escape($contents));
			$contents = "";
			$function = "";
			%constants = ();
			%parameterdescs = ();
			%parametertypes = ();
			@parameterlist = ();
			%sections = ();
			@sectionlist = ();
			$prototype = "";
			if ( $1 eq "" ) {
				$section = $section_intro;
			} else {
				$section = $1;
			}
		}
		elsif (/$doc_end/)
		{
			dump_doc_section($file, $section, xml_escape($contents));
			$contents = "";
			$function = "";
			%constants = ();
			%parameterdescs = ();
			%parametertypes = ();
			@parameterlist = ();
			%sections = ();
			@sectionlist = ();
			$prototype = "";
			$state = 0;
		}
		elsif (/$doc_content/)
		{
			if ( $1 eq "" )
			{
				$contents .= $blankline;
			}
			else
			{
				$contents .= $1 . "\n";
			}
		}
	}
    }
    if ($initial_section_counter == $section_counter) {
	print STDERR "Warning(${file}): no structured comments found\n";
	if ($output_mode eq "xml") {
	    # The template wants at least one RefEntry here; make one.
	    print "<refentry>\n";
	    print " <refnamediv>\n";
	    print "  <refname>\n";
	    print "   ${file}\n";
	    print "  </refname>\n";
	    print "  <refpurpose>\n";
	    print "   Document generation inconsistency\n";
	    print "  </refpurpose>\n";
	    print " </refnamediv>\n";
	    print " <refsect1>\n";
	    print "  <title>\n";
	    print "   Oops\n";
	    print "  </title>\n";
	    print "  <warning>\n";
	    print "   <para>\n";
	    print "    The template for this document tried to insert\n";
	    print "    the structured comment from the file\n";
	    print "    <filename>${file}</filename> at this point,\n";
	    print "    but none was found.\n";
	    print "    This dummy section is inserted to allow\n";
	    print "    generation to continue.\n";
	    print "   </para>\n";
	    print "  </warning>\n";
	    print " </refsect1>\n";
	    print "</refentry>\n";
	}
    }
}


$kernelversion = get_kernel_version();

# generate a sequence of code that will splice in highlighting information
# using the s// operator.
foreach my $pattern (keys %highlights) {
#   print STDERR "scanning pattern:$pattern, highlight:($highlights{$pattern})\n";
    $dohighlight .=  "\$contents =~ s:$pattern:$highlights{$pattern}:gs;\n";
}

# Read the file that maps relative names to absolute names for
# separate source and object directories and for shadow trees.
if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
	my ($relname, $absname);
	while(<SOURCE_MAP>) {
		chop();
		($relname, $absname) = (split())[0..1];
		$relname =~ s:^/+::;
		$source_map{$relname} = $absname;
	}
	close(SOURCE_MAP);
}

foreach (@ARGV) {
    chomp;
    process_file($_);
}
if ($verbose && $errors) {
  print STDERR "$errors errors\n";
}
if ($verbose && $warnings) {
  print STDERR "$warnings warnings\n";
}

exit($errors);