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