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Commit | Line | Data |
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1da177e4 LT |
1 | /* Generate kernel symbol version hashes. |
2 | Copyright 1996, 1997 Linux International. | |
3 | ||
4 | New implementation contributed by Richard Henderson <rth@tamu.edu> | |
5 | Based on original work by Bjorn Ekwall <bj0rn@blox.se> | |
6 | ||
7 | This file was part of the Linux modutils 2.4.22: moved back into the | |
8 | kernel sources by Rusty Russell/Kai Germaschewski. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify it | |
11 | under the terms of the GNU General Public License as published by the | |
12 | Free Software Foundation; either version 2 of the License, or (at your | |
13 | option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, but | |
16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software Foundation, | |
22 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
23 | ||
24 | #include <stdio.h> | |
25 | #include <string.h> | |
26 | #include <stdlib.h> | |
27 | #include <unistd.h> | |
28 | #include <assert.h> | |
29 | #include <stdarg.h> | |
30 | #ifdef __GNU_LIBRARY__ | |
31 | #include <getopt.h> | |
78c04153 | 32 | #endif /* __GNU_LIBRARY__ */ |
1da177e4 LT |
33 | |
34 | #include "genksyms.h" | |
1da177e4 LT |
35 | /*----------------------------------------------------------------------*/ |
36 | ||
37 | #define HASH_BUCKETS 4096 | |
38 | ||
39 | static struct symbol *symtab[HASH_BUCKETS]; | |
ce560686 | 40 | static FILE *debugfile; |
1da177e4 LT |
41 | |
42 | int cur_line = 1; | |
ce560686 | 43 | char *cur_filename; |
1da177e4 | 44 | |
64e6c1e1 | 45 | static int flag_debug, flag_dump_defs, flag_reference, flag_dump_types, |
2ea03891 | 46 | flag_preserve, flag_warnings; |
ce560686 SR |
47 | static const char *arch = ""; |
48 | static const char *mod_prefix = ""; | |
1da177e4 LT |
49 | |
50 | static int errors; | |
51 | static int nsyms; | |
52 | ||
53 | static struct symbol *expansion_trail; | |
15fde675 | 54 | static struct symbol *visited_symbols; |
1da177e4 | 55 | |
7ec8eda1 MM |
56 | static const struct { |
57 | int n; | |
58 | const char *name; | |
59 | } symbol_types[] = { | |
60 | [SYM_NORMAL] = { 0, NULL}, | |
61 | [SYM_TYPEDEF] = {'t', "typedef"}, | |
62 | [SYM_ENUM] = {'e', "enum"}, | |
63 | [SYM_STRUCT] = {'s', "struct"}, | |
64 | [SYM_UNION] = {'u', "union"}, | |
1da177e4 LT |
65 | }; |
66 | ||
ce560686 SR |
67 | static int equal_list(struct string_list *a, struct string_list *b); |
68 | static void print_list(FILE * f, struct string_list *list); | |
68eb8563 MM |
69 | static struct string_list *concat_list(struct string_list *start, ...); |
70 | static struct string_list *mk_node(const char *string); | |
64e6c1e1 AG |
71 | static void print_location(void); |
72 | static void print_type_name(enum symbol_type type, const char *name); | |
ce560686 | 73 | |
1da177e4 LT |
74 | /*----------------------------------------------------------------------*/ |
75 | ||
78c04153 SR |
76 | static const unsigned int crctab32[] = { |
77 | 0x00000000U, 0x77073096U, 0xee0e612cU, 0x990951baU, 0x076dc419U, | |
78 | 0x706af48fU, 0xe963a535U, 0x9e6495a3U, 0x0edb8832U, 0x79dcb8a4U, | |
79 | 0xe0d5e91eU, 0x97d2d988U, 0x09b64c2bU, 0x7eb17cbdU, 0xe7b82d07U, | |
80 | 0x90bf1d91U, 0x1db71064U, 0x6ab020f2U, 0xf3b97148U, 0x84be41deU, | |
81 | 0x1adad47dU, 0x6ddde4ebU, 0xf4d4b551U, 0x83d385c7U, 0x136c9856U, | |
82 | 0x646ba8c0U, 0xfd62f97aU, 0x8a65c9ecU, 0x14015c4fU, 0x63066cd9U, | |
83 | 0xfa0f3d63U, 0x8d080df5U, 0x3b6e20c8U, 0x4c69105eU, 0xd56041e4U, | |
84 | 0xa2677172U, 0x3c03e4d1U, 0x4b04d447U, 0xd20d85fdU, 0xa50ab56bU, | |
85 | 0x35b5a8faU, 0x42b2986cU, 0xdbbbc9d6U, 0xacbcf940U, 0x32d86ce3U, | |
86 | 0x45df5c75U, 0xdcd60dcfU, 0xabd13d59U, 0x26d930acU, 0x51de003aU, | |
87 | 0xc8d75180U, 0xbfd06116U, 0x21b4f4b5U, 0x56b3c423U, 0xcfba9599U, | |
88 | 0xb8bda50fU, 0x2802b89eU, 0x5f058808U, 0xc60cd9b2U, 0xb10be924U, | |
89 | 0x2f6f7c87U, 0x58684c11U, 0xc1611dabU, 0xb6662d3dU, 0x76dc4190U, | |
90 | 0x01db7106U, 0x98d220bcU, 0xefd5102aU, 0x71b18589U, 0x06b6b51fU, | |
91 | 0x9fbfe4a5U, 0xe8b8d433U, 0x7807c9a2U, 0x0f00f934U, 0x9609a88eU, | |
92 | 0xe10e9818U, 0x7f6a0dbbU, 0x086d3d2dU, 0x91646c97U, 0xe6635c01U, | |
93 | 0x6b6b51f4U, 0x1c6c6162U, 0x856530d8U, 0xf262004eU, 0x6c0695edU, | |
94 | 0x1b01a57bU, 0x8208f4c1U, 0xf50fc457U, 0x65b0d9c6U, 0x12b7e950U, | |
95 | 0x8bbeb8eaU, 0xfcb9887cU, 0x62dd1ddfU, 0x15da2d49U, 0x8cd37cf3U, | |
96 | 0xfbd44c65U, 0x4db26158U, 0x3ab551ceU, 0xa3bc0074U, 0xd4bb30e2U, | |
97 | 0x4adfa541U, 0x3dd895d7U, 0xa4d1c46dU, 0xd3d6f4fbU, 0x4369e96aU, | |
98 | 0x346ed9fcU, 0xad678846U, 0xda60b8d0U, 0x44042d73U, 0x33031de5U, | |
99 | 0xaa0a4c5fU, 0xdd0d7cc9U, 0x5005713cU, 0x270241aaU, 0xbe0b1010U, | |
100 | 0xc90c2086U, 0x5768b525U, 0x206f85b3U, 0xb966d409U, 0xce61e49fU, | |
101 | 0x5edef90eU, 0x29d9c998U, 0xb0d09822U, 0xc7d7a8b4U, 0x59b33d17U, | |
102 | 0x2eb40d81U, 0xb7bd5c3bU, 0xc0ba6cadU, 0xedb88320U, 0x9abfb3b6U, | |
103 | 0x03b6e20cU, 0x74b1d29aU, 0xead54739U, 0x9dd277afU, 0x04db2615U, | |
104 | 0x73dc1683U, 0xe3630b12U, 0x94643b84U, 0x0d6d6a3eU, 0x7a6a5aa8U, | |
105 | 0xe40ecf0bU, 0x9309ff9dU, 0x0a00ae27U, 0x7d079eb1U, 0xf00f9344U, | |
106 | 0x8708a3d2U, 0x1e01f268U, 0x6906c2feU, 0xf762575dU, 0x806567cbU, | |
107 | 0x196c3671U, 0x6e6b06e7U, 0xfed41b76U, 0x89d32be0U, 0x10da7a5aU, | |
108 | 0x67dd4accU, 0xf9b9df6fU, 0x8ebeeff9U, 0x17b7be43U, 0x60b08ed5U, | |
109 | 0xd6d6a3e8U, 0xa1d1937eU, 0x38d8c2c4U, 0x4fdff252U, 0xd1bb67f1U, | |
110 | 0xa6bc5767U, 0x3fb506ddU, 0x48b2364bU, 0xd80d2bdaU, 0xaf0a1b4cU, | |
111 | 0x36034af6U, 0x41047a60U, 0xdf60efc3U, 0xa867df55U, 0x316e8eefU, | |
112 | 0x4669be79U, 0xcb61b38cU, 0xbc66831aU, 0x256fd2a0U, 0x5268e236U, | |
113 | 0xcc0c7795U, 0xbb0b4703U, 0x220216b9U, 0x5505262fU, 0xc5ba3bbeU, | |
114 | 0xb2bd0b28U, 0x2bb45a92U, 0x5cb36a04U, 0xc2d7ffa7U, 0xb5d0cf31U, | |
115 | 0x2cd99e8bU, 0x5bdeae1dU, 0x9b64c2b0U, 0xec63f226U, 0x756aa39cU, | |
116 | 0x026d930aU, 0x9c0906a9U, 0xeb0e363fU, 0x72076785U, 0x05005713U, | |
117 | 0x95bf4a82U, 0xe2b87a14U, 0x7bb12baeU, 0x0cb61b38U, 0x92d28e9bU, | |
118 | 0xe5d5be0dU, 0x7cdcefb7U, 0x0bdbdf21U, 0x86d3d2d4U, 0xf1d4e242U, | |
119 | 0x68ddb3f8U, 0x1fda836eU, 0x81be16cdU, 0xf6b9265bU, 0x6fb077e1U, | |
120 | 0x18b74777U, 0x88085ae6U, 0xff0f6a70U, 0x66063bcaU, 0x11010b5cU, | |
121 | 0x8f659effU, 0xf862ae69U, 0x616bffd3U, 0x166ccf45U, 0xa00ae278U, | |
122 | 0xd70dd2eeU, 0x4e048354U, 0x3903b3c2U, 0xa7672661U, 0xd06016f7U, | |
123 | 0x4969474dU, 0x3e6e77dbU, 0xaed16a4aU, 0xd9d65adcU, 0x40df0b66U, | |
124 | 0x37d83bf0U, 0xa9bcae53U, 0xdebb9ec5U, 0x47b2cf7fU, 0x30b5ffe9U, | |
125 | 0xbdbdf21cU, 0xcabac28aU, 0x53b39330U, 0x24b4a3a6U, 0xbad03605U, | |
126 | 0xcdd70693U, 0x54de5729U, 0x23d967bfU, 0xb3667a2eU, 0xc4614ab8U, | |
127 | 0x5d681b02U, 0x2a6f2b94U, 0xb40bbe37U, 0xc30c8ea1U, 0x5a05df1bU, | |
128 | 0x2d02ef8dU | |
1da177e4 LT |
129 | }; |
130 | ||
ce560686 | 131 | static unsigned long partial_crc32_one(unsigned char c, unsigned long crc) |
1da177e4 | 132 | { |
78c04153 | 133 | return crctab32[(crc ^ c) & 0xff] ^ (crc >> 8); |
1da177e4 LT |
134 | } |
135 | ||
ce560686 | 136 | static unsigned long partial_crc32(const char *s, unsigned long crc) |
1da177e4 | 137 | { |
78c04153 SR |
138 | while (*s) |
139 | crc = partial_crc32_one(*s++, crc); | |
140 | return crc; | |
1da177e4 LT |
141 | } |
142 | ||
ce560686 | 143 | static unsigned long crc32(const char *s) |
1da177e4 | 144 | { |
78c04153 | 145 | return partial_crc32(s, 0xffffffff) ^ 0xffffffff; |
1da177e4 LT |
146 | } |
147 | ||
1da177e4 LT |
148 | /*----------------------------------------------------------------------*/ |
149 | ||
ce560686 | 150 | static enum symbol_type map_to_ns(enum symbol_type t) |
1da177e4 | 151 | { |
78c04153 SR |
152 | if (t == SYM_TYPEDEF) |
153 | t = SYM_NORMAL; | |
154 | else if (t == SYM_UNION) | |
155 | t = SYM_STRUCT; | |
156 | return t; | |
1da177e4 LT |
157 | } |
158 | ||
78c04153 | 159 | struct symbol *find_symbol(const char *name, enum symbol_type ns) |
1da177e4 | 160 | { |
78c04153 SR |
161 | unsigned long h = crc32(name) % HASH_BUCKETS; |
162 | struct symbol *sym; | |
1da177e4 | 163 | |
78c04153 | 164 | for (sym = symtab[h]; sym; sym = sym->hash_next) |
ce560686 | 165 | if (map_to_ns(sym->type) == map_to_ns(ns) && |
64e6c1e1 AG |
166 | strcmp(name, sym->name) == 0 && |
167 | sym->is_declared) | |
78c04153 | 168 | break; |
1da177e4 | 169 | |
78c04153 | 170 | return sym; |
1da177e4 LT |
171 | } |
172 | ||
64e6c1e1 AG |
173 | static int is_unknown_symbol(struct symbol *sym) |
174 | { | |
175 | struct string_list *defn; | |
176 | ||
177 | return ((sym->type == SYM_STRUCT || | |
178 | sym->type == SYM_UNION || | |
179 | sym->type == SYM_ENUM) && | |
180 | (defn = sym->defn) && defn->tag == SYM_NORMAL && | |
181 | strcmp(defn->string, "}") == 0 && | |
182 | (defn = defn->next) && defn->tag == SYM_NORMAL && | |
183 | strcmp(defn->string, "UNKNOWN") == 0 && | |
184 | (defn = defn->next) && defn->tag == SYM_NORMAL && | |
185 | strcmp(defn->string, "{") == 0); | |
186 | } | |
187 | ||
b7ed698c | 188 | static struct symbol *__add_symbol(const char *name, enum symbol_type type, |
64e6c1e1 AG |
189 | struct string_list *defn, int is_extern, |
190 | int is_reference) | |
1da177e4 | 191 | { |
78c04153 SR |
192 | unsigned long h = crc32(name) % HASH_BUCKETS; |
193 | struct symbol *sym; | |
64e6c1e1 | 194 | enum symbol_status status = STATUS_UNCHANGED; |
78c04153 | 195 | |
ce560686 | 196 | for (sym = symtab[h]; sym; sym = sym->hash_next) { |
64e6c1e1 AG |
197 | if (map_to_ns(sym->type) == map_to_ns(type) && |
198 | strcmp(name, sym->name) == 0) { | |
199 | if (is_reference) | |
200 | /* fall through */ ; | |
201 | else if (sym->type == type && | |
202 | equal_list(sym->defn, defn)) { | |
5dae9a55 AG |
203 | if (!sym->is_declared && sym->is_override) { |
204 | print_location(); | |
205 | print_type_name(type, name); | |
206 | fprintf(stderr, " modversion is " | |
207 | "unchanged\n"); | |
208 | } | |
64e6c1e1 AG |
209 | sym->is_declared = 1; |
210 | return sym; | |
211 | } else if (!sym->is_declared) { | |
5dae9a55 AG |
212 | if (sym->is_override && flag_preserve) { |
213 | print_location(); | |
214 | fprintf(stderr, "ignoring "); | |
215 | print_type_name(type, name); | |
216 | fprintf(stderr, " modversion change\n"); | |
217 | sym->is_declared = 1; | |
218 | return sym; | |
219 | } else { | |
220 | status = is_unknown_symbol(sym) ? | |
221 | STATUS_DEFINED : STATUS_MODIFIED; | |
222 | } | |
64e6c1e1 | 223 | } else { |
78c04153 | 224 | error_with_pos("redefinition of %s", name); |
64e6c1e1 AG |
225 | return sym; |
226 | } | |
227 | break; | |
78c04153 | 228 | } |
ce560686 | 229 | } |
78c04153 | 230 | |
64e6c1e1 AG |
231 | if (sym) { |
232 | struct symbol **psym; | |
233 | ||
234 | for (psym = &symtab[h]; *psym; psym = &(*psym)->hash_next) { | |
235 | if (*psym == sym) { | |
236 | *psym = sym->hash_next; | |
237 | break; | |
238 | } | |
239 | } | |
240 | --nsyms; | |
241 | } | |
242 | ||
78c04153 SR |
243 | sym = xmalloc(sizeof(*sym)); |
244 | sym->name = name; | |
245 | sym->type = type; | |
246 | sym->defn = defn; | |
247 | sym->expansion_trail = NULL; | |
15fde675 | 248 | sym->visited = NULL; |
78c04153 SR |
249 | sym->is_extern = is_extern; |
250 | ||
251 | sym->hash_next = symtab[h]; | |
252 | symtab[h] = sym; | |
253 | ||
64e6c1e1 AG |
254 | sym->is_declared = !is_reference; |
255 | sym->status = status; | |
5dae9a55 | 256 | sym->is_override = 0; |
64e6c1e1 | 257 | |
78c04153 | 258 | if (flag_debug) { |
7ec8eda1 MM |
259 | if (symbol_types[type].name) |
260 | fprintf(debugfile, "Defn for %s %s == <", | |
261 | symbol_types[type].name, name); | |
262 | else | |
263 | fprintf(debugfile, "Defn for type%d %s == <", | |
264 | type, name); | |
78c04153 SR |
265 | if (is_extern) |
266 | fputs("extern ", debugfile); | |
267 | print_list(debugfile, defn); | |
268 | fputs(">\n", debugfile); | |
269 | } | |
270 | ||
271 | ++nsyms; | |
1da177e4 | 272 | return sym; |
1da177e4 LT |
273 | } |
274 | ||
64e6c1e1 AG |
275 | struct symbol *add_symbol(const char *name, enum symbol_type type, |
276 | struct string_list *defn, int is_extern) | |
277 | { | |
278 | return __add_symbol(name, type, defn, is_extern, 0); | |
279 | } | |
280 | ||
b7ed698c | 281 | static struct symbol *add_reference_symbol(const char *name, enum symbol_type type, |
64e6c1e1 AG |
282 | struct string_list *defn, int is_extern) |
283 | { | |
284 | return __add_symbol(name, type, defn, is_extern, 1); | |
285 | } | |
286 | ||
1da177e4 LT |
287 | /*----------------------------------------------------------------------*/ |
288 | ||
ce560686 | 289 | void free_node(struct string_list *node) |
1da177e4 | 290 | { |
78c04153 SR |
291 | free(node->string); |
292 | free(node); | |
1da177e4 LT |
293 | } |
294 | ||
78c04153 | 295 | void free_list(struct string_list *s, struct string_list *e) |
1da177e4 | 296 | { |
78c04153 SR |
297 | while (s != e) { |
298 | struct string_list *next = s->next; | |
299 | free_node(s); | |
300 | s = next; | |
301 | } | |
1da177e4 LT |
302 | } |
303 | ||
68eb8563 MM |
304 | static struct string_list *mk_node(const char *string) |
305 | { | |
306 | struct string_list *newnode; | |
307 | ||
308 | newnode = xmalloc(sizeof(*newnode)); | |
309 | newnode->string = xstrdup(string); | |
310 | newnode->tag = SYM_NORMAL; | |
311 | newnode->next = NULL; | |
312 | ||
313 | return newnode; | |
314 | } | |
315 | ||
316 | static struct string_list *concat_list(struct string_list *start, ...) | |
317 | { | |
318 | va_list ap; | |
319 | struct string_list *n, *n2; | |
320 | ||
321 | if (!start) | |
322 | return NULL; | |
323 | for (va_start(ap, start); (n = va_arg(ap, struct string_list *));) { | |
324 | for (n2 = n; n2->next; n2 = n2->next) | |
325 | ; | |
326 | n2->next = start; | |
327 | start = n; | |
328 | } | |
329 | va_end(ap); | |
330 | return start; | |
331 | } | |
332 | ||
ce560686 | 333 | struct string_list *copy_node(struct string_list *node) |
1da177e4 | 334 | { |
78c04153 | 335 | struct string_list *newnode; |
1da177e4 | 336 | |
78c04153 SR |
337 | newnode = xmalloc(sizeof(*newnode)); |
338 | newnode->string = xstrdup(node->string); | |
339 | newnode->tag = node->tag; | |
1da177e4 | 340 | |
78c04153 | 341 | return newnode; |
1da177e4 LT |
342 | } |
343 | ||
ce560686 | 344 | static int equal_list(struct string_list *a, struct string_list *b) |
1da177e4 | 345 | { |
78c04153 SR |
346 | while (a && b) { |
347 | if (a->tag != b->tag || strcmp(a->string, b->string)) | |
348 | return 0; | |
349 | a = a->next; | |
350 | b = b->next; | |
351 | } | |
1da177e4 | 352 | |
78c04153 | 353 | return !a && !b; |
1da177e4 LT |
354 | } |
355 | ||
64e6c1e1 AG |
356 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) |
357 | ||
b7ed698c | 358 | static struct string_list *read_node(FILE *f) |
64e6c1e1 AG |
359 | { |
360 | char buffer[256]; | |
361 | struct string_list node = { | |
362 | .string = buffer, | |
363 | .tag = SYM_NORMAL }; | |
364 | int c; | |
365 | ||
366 | while ((c = fgetc(f)) != EOF) { | |
367 | if (c == ' ') { | |
368 | if (node.string == buffer) | |
369 | continue; | |
370 | break; | |
371 | } else if (c == '\n') { | |
372 | if (node.string == buffer) | |
373 | return NULL; | |
374 | ungetc(c, f); | |
375 | break; | |
376 | } | |
377 | if (node.string >= buffer + sizeof(buffer) - 1) { | |
378 | fprintf(stderr, "Token too long\n"); | |
379 | exit(1); | |
380 | } | |
381 | *node.string++ = c; | |
382 | } | |
383 | if (node.string == buffer) | |
384 | return NULL; | |
385 | *node.string = 0; | |
386 | node.string = buffer; | |
387 | ||
388 | if (node.string[1] == '#') { | |
389 | int n; | |
390 | ||
7ec8eda1 MM |
391 | for (n = 0; n < ARRAY_SIZE(symbol_types); n++) { |
392 | if (node.string[0] == symbol_types[n].n) { | |
64e6c1e1 AG |
393 | node.tag = n; |
394 | node.string += 2; | |
395 | return copy_node(&node); | |
396 | } | |
397 | } | |
398 | fprintf(stderr, "Unknown type %c\n", node.string[0]); | |
399 | exit(1); | |
400 | } | |
401 | return copy_node(&node); | |
402 | } | |
403 | ||
404 | static void read_reference(FILE *f) | |
405 | { | |
406 | while (!feof(f)) { | |
407 | struct string_list *defn = NULL; | |
408 | struct string_list *sym, *def; | |
5dae9a55 AG |
409 | int is_extern = 0, is_override = 0; |
410 | struct symbol *subsym; | |
64e6c1e1 AG |
411 | |
412 | sym = read_node(f); | |
5dae9a55 AG |
413 | if (sym && sym->tag == SYM_NORMAL && |
414 | !strcmp(sym->string, "override")) { | |
415 | is_override = 1; | |
416 | free_node(sym); | |
417 | sym = read_node(f); | |
418 | } | |
64e6c1e1 AG |
419 | if (!sym) |
420 | continue; | |
421 | def = read_node(f); | |
422 | if (def && def->tag == SYM_NORMAL && | |
423 | !strcmp(def->string, "extern")) { | |
424 | is_extern = 1; | |
425 | free_node(def); | |
426 | def = read_node(f); | |
427 | } | |
428 | while (def) { | |
429 | def->next = defn; | |
430 | defn = def; | |
431 | def = read_node(f); | |
432 | } | |
5dae9a55 | 433 | subsym = add_reference_symbol(xstrdup(sym->string), sym->tag, |
64e6c1e1 | 434 | defn, is_extern); |
5dae9a55 | 435 | subsym->is_override = is_override; |
64e6c1e1 AG |
436 | free_node(sym); |
437 | } | |
438 | } | |
439 | ||
ce560686 | 440 | static void print_node(FILE * f, struct string_list *list) |
1da177e4 | 441 | { |
7ec8eda1 MM |
442 | if (symbol_types[list->tag].n) { |
443 | putc(symbol_types[list->tag].n, f); | |
78c04153 | 444 | putc('#', f); |
78c04153 | 445 | } |
15fde675 | 446 | fputs(list->string, f); |
1da177e4 LT |
447 | } |
448 | ||
ce560686 | 449 | static void print_list(FILE * f, struct string_list *list) |
1da177e4 | 450 | { |
78c04153 SR |
451 | struct string_list **e, **b; |
452 | struct string_list *tmp, **tmp2; | |
453 | int elem = 1; | |
1da177e4 | 454 | |
78c04153 SR |
455 | if (list == NULL) { |
456 | fputs("(nil)", f); | |
457 | return; | |
458 | } | |
1da177e4 | 459 | |
78c04153 SR |
460 | tmp = list; |
461 | while ((tmp = tmp->next) != NULL) | |
462 | elem++; | |
1da177e4 | 463 | |
78c04153 SR |
464 | b = alloca(elem * sizeof(*e)); |
465 | e = b + elem; | |
466 | tmp2 = e - 1; | |
1da177e4 | 467 | |
78c04153 SR |
468 | (*tmp2--) = list; |
469 | while ((list = list->next) != NULL) | |
470 | *(tmp2--) = list; | |
1da177e4 | 471 | |
78c04153 SR |
472 | while (b != e) { |
473 | print_node(f, *b++); | |
474 | putc(' ', f); | |
475 | } | |
476 | } | |
1da177e4 | 477 | |
15fde675 | 478 | static unsigned long expand_and_crc_sym(struct symbol *sym, unsigned long crc) |
78c04153 | 479 | { |
15fde675 | 480 | struct string_list *list = sym->defn; |
78c04153 SR |
481 | struct string_list **e, **b; |
482 | struct string_list *tmp, **tmp2; | |
483 | int elem = 1; | |
484 | ||
485 | if (!list) | |
486 | return crc; | |
487 | ||
488 | tmp = list; | |
489 | while ((tmp = tmp->next) != NULL) | |
490 | elem++; | |
491 | ||
492 | b = alloca(elem * sizeof(*e)); | |
493 | e = b + elem; | |
494 | tmp2 = e - 1; | |
495 | ||
496 | *(tmp2--) = list; | |
497 | while ((list = list->next) != NULL) | |
498 | *(tmp2--) = list; | |
499 | ||
500 | while (b != e) { | |
501 | struct string_list *cur; | |
502 | struct symbol *subsym; | |
503 | ||
504 | cur = *(b++); | |
505 | switch (cur->tag) { | |
506 | case SYM_NORMAL: | |
507 | if (flag_dump_defs) | |
508 | fprintf(debugfile, "%s ", cur->string); | |
509 | crc = partial_crc32(cur->string, crc); | |
510 | crc = partial_crc32_one(' ', crc); | |
511 | break; | |
512 | ||
513 | case SYM_TYPEDEF: | |
514 | subsym = find_symbol(cur->string, cur->tag); | |
64e6c1e1 | 515 | /* FIXME: Bad reference files can segfault here. */ |
78c04153 SR |
516 | if (subsym->expansion_trail) { |
517 | if (flag_dump_defs) | |
518 | fprintf(debugfile, "%s ", cur->string); | |
519 | crc = partial_crc32(cur->string, crc); | |
520 | crc = partial_crc32_one(' ', crc); | |
521 | } else { | |
522 | subsym->expansion_trail = expansion_trail; | |
523 | expansion_trail = subsym; | |
15fde675 | 524 | crc = expand_and_crc_sym(subsym, crc); |
78c04153 SR |
525 | } |
526 | break; | |
527 | ||
528 | case SYM_STRUCT: | |
529 | case SYM_UNION: | |
530 | case SYM_ENUM: | |
531 | subsym = find_symbol(cur->string, cur->tag); | |
532 | if (!subsym) { | |
68eb8563 | 533 | struct string_list *n; |
78c04153 SR |
534 | |
535 | error_with_pos("expand undefined %s %s", | |
7ec8eda1 | 536 | symbol_types[cur->tag].name, |
78c04153 | 537 | cur->string); |
68eb8563 MM |
538 | n = concat_list(mk_node |
539 | (symbol_types[cur->tag].name), | |
540 | mk_node(cur->string), | |
541 | mk_node("{"), | |
542 | mk_node("UNKNOWN"), | |
543 | mk_node("}"), NULL); | |
78c04153 SR |
544 | subsym = |
545 | add_symbol(cur->string, cur->tag, n, 0); | |
546 | } | |
547 | if (subsym->expansion_trail) { | |
548 | if (flag_dump_defs) { | |
549 | fprintf(debugfile, "%s %s ", | |
7ec8eda1 | 550 | symbol_types[cur->tag].name, |
78c04153 SR |
551 | cur->string); |
552 | } | |
553 | ||
7ec8eda1 | 554 | crc = partial_crc32(symbol_types[cur->tag].name, |
ce560686 | 555 | crc); |
78c04153 SR |
556 | crc = partial_crc32_one(' ', crc); |
557 | crc = partial_crc32(cur->string, crc); | |
558 | crc = partial_crc32_one(' ', crc); | |
559 | } else { | |
560 | subsym->expansion_trail = expansion_trail; | |
561 | expansion_trail = subsym; | |
15fde675 | 562 | crc = expand_and_crc_sym(subsym, crc); |
78c04153 SR |
563 | } |
564 | break; | |
1da177e4 | 565 | } |
1da177e4 | 566 | } |
1da177e4 | 567 | |
15fde675 AG |
568 | { |
569 | static struct symbol **end = &visited_symbols; | |
570 | ||
571 | if (!sym->visited) { | |
572 | *end = sym; | |
573 | end = &sym->visited; | |
574 | sym->visited = (struct symbol *)-1L; | |
575 | } | |
576 | } | |
577 | ||
78c04153 | 578 | return crc; |
1da177e4 LT |
579 | } |
580 | ||
78c04153 | 581 | void export_symbol(const char *name) |
1da177e4 | 582 | { |
78c04153 | 583 | struct symbol *sym; |
1da177e4 | 584 | |
78c04153 SR |
585 | sym = find_symbol(name, SYM_NORMAL); |
586 | if (!sym) | |
587 | error_with_pos("export undefined symbol %s", name); | |
588 | else { | |
589 | unsigned long crc; | |
64e6c1e1 | 590 | int has_changed = 0; |
1da177e4 | 591 | |
78c04153 SR |
592 | if (flag_dump_defs) |
593 | fprintf(debugfile, "Export %s == <", name); | |
1da177e4 | 594 | |
78c04153 | 595 | expansion_trail = (struct symbol *)-1L; |
1da177e4 | 596 | |
64e6c1e1 AG |
597 | sym->expansion_trail = expansion_trail; |
598 | expansion_trail = sym; | |
15fde675 | 599 | crc = expand_and_crc_sym(sym, 0xffffffff) ^ 0xffffffff; |
1da177e4 | 600 | |
78c04153 SR |
601 | sym = expansion_trail; |
602 | while (sym != (struct symbol *)-1L) { | |
603 | struct symbol *n = sym->expansion_trail; | |
64e6c1e1 AG |
604 | |
605 | if (sym->status != STATUS_UNCHANGED) { | |
606 | if (!has_changed) { | |
607 | print_location(); | |
608 | fprintf(stderr, "%s: %s: modversion " | |
609 | "changed because of changes " | |
610 | "in ", flag_preserve ? "error" : | |
611 | "warning", name); | |
612 | } else | |
613 | fprintf(stderr, ", "); | |
614 | print_type_name(sym->type, sym->name); | |
615 | if (sym->status == STATUS_DEFINED) | |
616 | fprintf(stderr, " (became defined)"); | |
617 | has_changed = 1; | |
618 | if (flag_preserve) | |
619 | errors++; | |
620 | } | |
78c04153 SR |
621 | sym->expansion_trail = 0; |
622 | sym = n; | |
623 | } | |
64e6c1e1 AG |
624 | if (has_changed) |
625 | fprintf(stderr, "\n"); | |
1da177e4 | 626 | |
78c04153 SR |
627 | if (flag_dump_defs) |
628 | fputs(">\n", debugfile); | |
1da177e4 | 629 | |
2ea03891 SR |
630 | /* Used as a linker script. */ |
631 | printf("%s__crc_%s = 0x%08lx ;\n", mod_prefix, name, crc); | |
78c04153 | 632 | } |
1da177e4 LT |
633 | } |
634 | ||
635 | /*----------------------------------------------------------------------*/ | |
64e6c1e1 AG |
636 | |
637 | static void print_location(void) | |
638 | { | |
639 | fprintf(stderr, "%s:%d: ", cur_filename ? : "<stdin>", cur_line); | |
640 | } | |
641 | ||
642 | static void print_type_name(enum symbol_type type, const char *name) | |
643 | { | |
7ec8eda1 MM |
644 | if (symbol_types[type].name) |
645 | fprintf(stderr, "%s %s", symbol_types[type].name, name); | |
64e6c1e1 AG |
646 | else |
647 | fprintf(stderr, "%s", name); | |
648 | } | |
649 | ||
78c04153 | 650 | void error_with_pos(const char *fmt, ...) |
1da177e4 | 651 | { |
78c04153 | 652 | va_list args; |
1da177e4 | 653 | |
78c04153 | 654 | if (flag_warnings) { |
64e6c1e1 | 655 | print_location(); |
1da177e4 | 656 | |
78c04153 SR |
657 | va_start(args, fmt); |
658 | vfprintf(stderr, fmt, args); | |
659 | va_end(args); | |
660 | putc('\n', stderr); | |
1da177e4 | 661 | |
78c04153 SR |
662 | errors++; |
663 | } | |
1da177e4 LT |
664 | } |
665 | ||
ce560686 | 666 | static void genksyms_usage(void) |
1da177e4 | 667 | { |
2ea03891 | 668 | fputs("Usage:\n" "genksyms [-adDTwqhV] > /path/to/.tmp_obj.ver\n" "\n" |
1da177e4 | 669 | #ifdef __GNU_LIBRARY__ |
36091fd3 | 670 | " -a, --arch Select architecture\n" |
1da177e4 LT |
671 | " -d, --debug Increment the debug level (repeatable)\n" |
672 | " -D, --dump Dump expanded symbol defs (for debugging only)\n" | |
64e6c1e1 AG |
673 | " -r, --reference file Read reference symbols from a file\n" |
674 | " -T, --dump-types file Dump expanded types into file\n" | |
675 | " -p, --preserve Preserve reference modversions or fail\n" | |
1da177e4 LT |
676 | " -w, --warnings Enable warnings\n" |
677 | " -q, --quiet Disable warnings (default)\n" | |
678 | " -h, --help Print this message\n" | |
679 | " -V, --version Print the release version\n" | |
78c04153 | 680 | #else /* __GNU_LIBRARY__ */ |
36091fd3 | 681 | " -a Select architecture\n" |
78c04153 SR |
682 | " -d Increment the debug level (repeatable)\n" |
683 | " -D Dump expanded symbol defs (for debugging only)\n" | |
64e6c1e1 AG |
684 | " -r file Read reference symbols from a file\n" |
685 | " -T file Dump expanded types into file\n" | |
686 | " -p Preserve reference modversions or fail\n" | |
78c04153 SR |
687 | " -w Enable warnings\n" |
688 | " -q Disable warnings (default)\n" | |
689 | " -h Print this message\n" | |
690 | " -V Print the release version\n" | |
691 | #endif /* __GNU_LIBRARY__ */ | |
1da177e4 LT |
692 | , stderr); |
693 | } | |
694 | ||
78c04153 | 695 | int main(int argc, char **argv) |
1da177e4 | 696 | { |
64e6c1e1 | 697 | FILE *dumpfile = NULL, *ref_file = NULL; |
78c04153 | 698 | int o; |
1da177e4 LT |
699 | |
700 | #ifdef __GNU_LIBRARY__ | |
78c04153 SR |
701 | struct option long_opts[] = { |
702 | {"arch", 1, 0, 'a'}, | |
703 | {"debug", 0, 0, 'd'}, | |
704 | {"warnings", 0, 0, 'w'}, | |
705 | {"quiet", 0, 0, 'q'}, | |
706 | {"dump", 0, 0, 'D'}, | |
64e6c1e1 | 707 | {"reference", 1, 0, 'r'}, |
15fde675 | 708 | {"dump-types", 1, 0, 'T'}, |
64e6c1e1 | 709 | {"preserve", 0, 0, 'p'}, |
78c04153 SR |
710 | {"version", 0, 0, 'V'}, |
711 | {"help", 0, 0, 'h'}, | |
712 | {0, 0, 0, 0} | |
713 | }; | |
714 | ||
2ea03891 | 715 | while ((o = getopt_long(argc, argv, "a:dwqVDr:T:ph", |
78c04153 SR |
716 | &long_opts[0], NULL)) != EOF) |
717 | #else /* __GNU_LIBRARY__ */ | |
2ea03891 | 718 | while ((o = getopt(argc, argv, "a:dwqVDr:T:ph")) != EOF) |
78c04153 SR |
719 | #endif /* __GNU_LIBRARY__ */ |
720 | switch (o) { | |
721 | case 'a': | |
722 | arch = optarg; | |
723 | break; | |
724 | case 'd': | |
725 | flag_debug++; | |
726 | break; | |
727 | case 'w': | |
728 | flag_warnings = 1; | |
729 | break; | |
730 | case 'q': | |
731 | flag_warnings = 0; | |
732 | break; | |
733 | case 'V': | |
734 | fputs("genksyms version 2.5.60\n", stderr); | |
735 | break; | |
736 | case 'D': | |
737 | flag_dump_defs = 1; | |
738 | break; | |
64e6c1e1 AG |
739 | case 'r': |
740 | flag_reference = 1; | |
741 | ref_file = fopen(optarg, "r"); | |
742 | if (!ref_file) { | |
743 | perror(optarg); | |
744 | return 1; | |
745 | } | |
746 | break; | |
15fde675 AG |
747 | case 'T': |
748 | flag_dump_types = 1; | |
749 | dumpfile = fopen(optarg, "w"); | |
750 | if (!dumpfile) { | |
751 | perror(optarg); | |
752 | return 1; | |
753 | } | |
754 | break; | |
64e6c1e1 AG |
755 | case 'p': |
756 | flag_preserve = 1; | |
757 | break; | |
78c04153 SR |
758 | case 'h': |
759 | genksyms_usage(); | |
760 | return 0; | |
761 | default: | |
762 | genksyms_usage(); | |
763 | return 1; | |
764 | } | |
f606ddf4 | 765 | if ((strcmp(arch, "h8300") == 0) || (strcmp(arch, "blackfin") == 0)) |
78c04153 SR |
766 | mod_prefix = "_"; |
767 | { | |
768 | extern int yydebug; | |
769 | extern int yy_flex_debug; | |
770 | ||
771 | yydebug = (flag_debug > 1); | |
772 | yy_flex_debug = (flag_debug > 2); | |
773 | ||
774 | debugfile = stderr; | |
775 | /* setlinebuf(debugfile); */ | |
776 | } | |
777 | ||
c64152bf | 778 | if (flag_reference) { |
64e6c1e1 | 779 | read_reference(ref_file); |
c64152bf AB |
780 | fclose(ref_file); |
781 | } | |
64e6c1e1 | 782 | |
78c04153 SR |
783 | yyparse(); |
784 | ||
15fde675 AG |
785 | if (flag_dump_types && visited_symbols) { |
786 | while (visited_symbols != (struct symbol *)-1L) { | |
787 | struct symbol *sym = visited_symbols; | |
788 | ||
5dae9a55 AG |
789 | if (sym->is_override) |
790 | fputs("override ", dumpfile); | |
7ec8eda1 MM |
791 | if (symbol_types[sym->type].n) { |
792 | putc(symbol_types[sym->type].n, dumpfile); | |
15fde675 AG |
793 | putc('#', dumpfile); |
794 | } | |
795 | fputs(sym->name, dumpfile); | |
796 | putc(' ', dumpfile); | |
3b40d381 AG |
797 | if (sym->is_extern) |
798 | fputs("extern ", dumpfile); | |
15fde675 AG |
799 | print_list(dumpfile, sym->defn); |
800 | putc('\n', dumpfile); | |
801 | ||
802 | visited_symbols = sym->visited; | |
803 | sym->visited = NULL; | |
804 | } | |
805 | } | |
806 | ||
78c04153 SR |
807 | if (flag_debug) { |
808 | fprintf(debugfile, "Hash table occupancy %d/%d = %g\n", | |
809 | nsyms, HASH_BUCKETS, | |
810 | (double)nsyms / (double)HASH_BUCKETS); | |
811 | } | |
812 | ||
813 | return errors != 0; | |
1da177e4 | 814 | } |