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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 | |
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)) { | |
5dae9a55 AG |
194 | if (!sym->is_declared && sym->is_override) { |
195 | print_location(); | |
196 | print_type_name(type, name); | |
197 | fprintf(stderr, " modversion is " | |
198 | "unchanged\n"); | |
199 | } | |
64e6c1e1 AG |
200 | sym->is_declared = 1; |
201 | return sym; | |
202 | } else if (!sym->is_declared) { | |
5dae9a55 AG |
203 | if (sym->is_override && flag_preserve) { |
204 | print_location(); | |
205 | fprintf(stderr, "ignoring "); | |
206 | print_type_name(type, name); | |
207 | fprintf(stderr, " modversion change\n"); | |
208 | sym->is_declared = 1; | |
209 | return sym; | |
210 | } else { | |
211 | status = is_unknown_symbol(sym) ? | |
212 | STATUS_DEFINED : STATUS_MODIFIED; | |
213 | } | |
64e6c1e1 | 214 | } else { |
78c04153 | 215 | error_with_pos("redefinition of %s", name); |
64e6c1e1 AG |
216 | return sym; |
217 | } | |
218 | break; | |
78c04153 | 219 | } |
ce560686 | 220 | } |
78c04153 | 221 | |
64e6c1e1 AG |
222 | if (sym) { |
223 | struct symbol **psym; | |
224 | ||
225 | for (psym = &symtab[h]; *psym; psym = &(*psym)->hash_next) { | |
226 | if (*psym == sym) { | |
227 | *psym = sym->hash_next; | |
228 | break; | |
229 | } | |
230 | } | |
231 | --nsyms; | |
232 | } | |
233 | ||
78c04153 SR |
234 | sym = xmalloc(sizeof(*sym)); |
235 | sym->name = name; | |
236 | sym->type = type; | |
237 | sym->defn = defn; | |
238 | sym->expansion_trail = NULL; | |
15fde675 | 239 | sym->visited = NULL; |
78c04153 SR |
240 | sym->is_extern = is_extern; |
241 | ||
242 | sym->hash_next = symtab[h]; | |
243 | symtab[h] = sym; | |
244 | ||
64e6c1e1 AG |
245 | sym->is_declared = !is_reference; |
246 | sym->status = status; | |
5dae9a55 | 247 | sym->is_override = 0; |
64e6c1e1 | 248 | |
78c04153 SR |
249 | if (flag_debug) { |
250 | fprintf(debugfile, "Defn for %s %s == <", | |
251 | symbol_type_name[type], name); | |
252 | if (is_extern) | |
253 | fputs("extern ", debugfile); | |
254 | print_list(debugfile, defn); | |
255 | fputs(">\n", debugfile); | |
256 | } | |
257 | ||
258 | ++nsyms; | |
1da177e4 | 259 | return sym; |
1da177e4 LT |
260 | } |
261 | ||
64e6c1e1 AG |
262 | struct symbol *add_symbol(const char *name, enum symbol_type type, |
263 | struct string_list *defn, int is_extern) | |
264 | { | |
265 | return __add_symbol(name, type, defn, is_extern, 0); | |
266 | } | |
267 | ||
268 | struct symbol *add_reference_symbol(const char *name, enum symbol_type type, | |
269 | struct string_list *defn, int is_extern) | |
270 | { | |
271 | return __add_symbol(name, type, defn, is_extern, 1); | |
272 | } | |
273 | ||
1da177e4 LT |
274 | /*----------------------------------------------------------------------*/ |
275 | ||
ce560686 | 276 | void free_node(struct string_list *node) |
1da177e4 | 277 | { |
78c04153 SR |
278 | free(node->string); |
279 | free(node); | |
1da177e4 LT |
280 | } |
281 | ||
78c04153 | 282 | void free_list(struct string_list *s, struct string_list *e) |
1da177e4 | 283 | { |
78c04153 SR |
284 | while (s != e) { |
285 | struct string_list *next = s->next; | |
286 | free_node(s); | |
287 | s = next; | |
288 | } | |
1da177e4 LT |
289 | } |
290 | ||
ce560686 | 291 | struct string_list *copy_node(struct string_list *node) |
1da177e4 | 292 | { |
78c04153 | 293 | struct string_list *newnode; |
1da177e4 | 294 | |
78c04153 SR |
295 | newnode = xmalloc(sizeof(*newnode)); |
296 | newnode->string = xstrdup(node->string); | |
297 | newnode->tag = node->tag; | |
1da177e4 | 298 | |
78c04153 | 299 | return newnode; |
1da177e4 LT |
300 | } |
301 | ||
ce560686 | 302 | static int equal_list(struct string_list *a, struct string_list *b) |
1da177e4 | 303 | { |
78c04153 SR |
304 | while (a && b) { |
305 | if (a->tag != b->tag || strcmp(a->string, b->string)) | |
306 | return 0; | |
307 | a = a->next; | |
308 | b = b->next; | |
309 | } | |
1da177e4 | 310 | |
78c04153 | 311 | return !a && !b; |
1da177e4 LT |
312 | } |
313 | ||
64e6c1e1 AG |
314 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) |
315 | ||
316 | struct string_list *read_node(FILE *f) | |
317 | { | |
318 | char buffer[256]; | |
319 | struct string_list node = { | |
320 | .string = buffer, | |
321 | .tag = SYM_NORMAL }; | |
322 | int c; | |
323 | ||
324 | while ((c = fgetc(f)) != EOF) { | |
325 | if (c == ' ') { | |
326 | if (node.string == buffer) | |
327 | continue; | |
328 | break; | |
329 | } else if (c == '\n') { | |
330 | if (node.string == buffer) | |
331 | return NULL; | |
332 | ungetc(c, f); | |
333 | break; | |
334 | } | |
335 | if (node.string >= buffer + sizeof(buffer) - 1) { | |
336 | fprintf(stderr, "Token too long\n"); | |
337 | exit(1); | |
338 | } | |
339 | *node.string++ = c; | |
340 | } | |
341 | if (node.string == buffer) | |
342 | return NULL; | |
343 | *node.string = 0; | |
344 | node.string = buffer; | |
345 | ||
346 | if (node.string[1] == '#') { | |
347 | int n; | |
348 | ||
349 | for (n = 0; n < ARRAY_SIZE(symbol_type_name); n++) { | |
350 | if (node.string[0] == symbol_type_name[n][0]) { | |
351 | node.tag = n; | |
352 | node.string += 2; | |
353 | return copy_node(&node); | |
354 | } | |
355 | } | |
356 | fprintf(stderr, "Unknown type %c\n", node.string[0]); | |
357 | exit(1); | |
358 | } | |
359 | return copy_node(&node); | |
360 | } | |
361 | ||
362 | static void read_reference(FILE *f) | |
363 | { | |
364 | while (!feof(f)) { | |
365 | struct string_list *defn = NULL; | |
366 | struct string_list *sym, *def; | |
5dae9a55 AG |
367 | int is_extern = 0, is_override = 0; |
368 | struct symbol *subsym; | |
64e6c1e1 AG |
369 | |
370 | sym = read_node(f); | |
5dae9a55 AG |
371 | if (sym && sym->tag == SYM_NORMAL && |
372 | !strcmp(sym->string, "override")) { | |
373 | is_override = 1; | |
374 | free_node(sym); | |
375 | sym = read_node(f); | |
376 | } | |
64e6c1e1 AG |
377 | if (!sym) |
378 | continue; | |
379 | def = read_node(f); | |
380 | if (def && def->tag == SYM_NORMAL && | |
381 | !strcmp(def->string, "extern")) { | |
382 | is_extern = 1; | |
383 | free_node(def); | |
384 | def = read_node(f); | |
385 | } | |
386 | while (def) { | |
387 | def->next = defn; | |
388 | defn = def; | |
389 | def = read_node(f); | |
390 | } | |
5dae9a55 | 391 | subsym = add_reference_symbol(xstrdup(sym->string), sym->tag, |
64e6c1e1 | 392 | defn, is_extern); |
5dae9a55 | 393 | subsym->is_override = is_override; |
64e6c1e1 AG |
394 | free_node(sym); |
395 | } | |
396 | } | |
397 | ||
ce560686 | 398 | static void print_node(FILE * f, struct string_list *list) |
1da177e4 | 399 | { |
15fde675 AG |
400 | if (list->tag != SYM_NORMAL) { |
401 | putc(symbol_type_name[list->tag][0], f); | |
78c04153 | 402 | putc('#', f); |
78c04153 | 403 | } |
15fde675 | 404 | fputs(list->string, f); |
1da177e4 LT |
405 | } |
406 | ||
ce560686 | 407 | static void print_list(FILE * f, struct string_list *list) |
1da177e4 | 408 | { |
78c04153 SR |
409 | struct string_list **e, **b; |
410 | struct string_list *tmp, **tmp2; | |
411 | int elem = 1; | |
1da177e4 | 412 | |
78c04153 SR |
413 | if (list == NULL) { |
414 | fputs("(nil)", f); | |
415 | return; | |
416 | } | |
1da177e4 | 417 | |
78c04153 SR |
418 | tmp = list; |
419 | while ((tmp = tmp->next) != NULL) | |
420 | elem++; | |
1da177e4 | 421 | |
78c04153 SR |
422 | b = alloca(elem * sizeof(*e)); |
423 | e = b + elem; | |
424 | tmp2 = e - 1; | |
1da177e4 | 425 | |
78c04153 SR |
426 | (*tmp2--) = list; |
427 | while ((list = list->next) != NULL) | |
428 | *(tmp2--) = list; | |
1da177e4 | 429 | |
78c04153 SR |
430 | while (b != e) { |
431 | print_node(f, *b++); | |
432 | putc(' ', f); | |
433 | } | |
434 | } | |
1da177e4 | 435 | |
15fde675 | 436 | static unsigned long expand_and_crc_sym(struct symbol *sym, unsigned long crc) |
78c04153 | 437 | { |
15fde675 | 438 | struct string_list *list = sym->defn; |
78c04153 SR |
439 | struct string_list **e, **b; |
440 | struct string_list *tmp, **tmp2; | |
441 | int elem = 1; | |
442 | ||
443 | if (!list) | |
444 | return crc; | |
445 | ||
446 | tmp = list; | |
447 | while ((tmp = tmp->next) != NULL) | |
448 | elem++; | |
449 | ||
450 | b = alloca(elem * sizeof(*e)); | |
451 | e = b + elem; | |
452 | tmp2 = e - 1; | |
453 | ||
454 | *(tmp2--) = list; | |
455 | while ((list = list->next) != NULL) | |
456 | *(tmp2--) = list; | |
457 | ||
458 | while (b != e) { | |
459 | struct string_list *cur; | |
460 | struct symbol *subsym; | |
461 | ||
462 | cur = *(b++); | |
463 | switch (cur->tag) { | |
464 | case SYM_NORMAL: | |
465 | if (flag_dump_defs) | |
466 | fprintf(debugfile, "%s ", cur->string); | |
467 | crc = partial_crc32(cur->string, crc); | |
468 | crc = partial_crc32_one(' ', crc); | |
469 | break; | |
470 | ||
471 | case SYM_TYPEDEF: | |
472 | subsym = find_symbol(cur->string, cur->tag); | |
64e6c1e1 | 473 | /* FIXME: Bad reference files can segfault here. */ |
78c04153 SR |
474 | if (subsym->expansion_trail) { |
475 | if (flag_dump_defs) | |
476 | fprintf(debugfile, "%s ", cur->string); | |
477 | crc = partial_crc32(cur->string, crc); | |
478 | crc = partial_crc32_one(' ', crc); | |
479 | } else { | |
480 | subsym->expansion_trail = expansion_trail; | |
481 | expansion_trail = subsym; | |
15fde675 | 482 | crc = expand_and_crc_sym(subsym, crc); |
78c04153 SR |
483 | } |
484 | break; | |
485 | ||
486 | case SYM_STRUCT: | |
487 | case SYM_UNION: | |
488 | case SYM_ENUM: | |
489 | subsym = find_symbol(cur->string, cur->tag); | |
490 | if (!subsym) { | |
491 | struct string_list *n, *t = NULL; | |
492 | ||
493 | error_with_pos("expand undefined %s %s", | |
494 | symbol_type_name[cur->tag], | |
495 | cur->string); | |
496 | ||
497 | n = xmalloc(sizeof(*n)); | |
498 | n->string = xstrdup(symbol_type_name[cur->tag]); | |
499 | n->tag = SYM_NORMAL; | |
500 | n->next = t; | |
501 | t = n; | |
502 | ||
503 | n = xmalloc(sizeof(*n)); | |
504 | n->string = xstrdup(cur->string); | |
505 | n->tag = SYM_NORMAL; | |
506 | n->next = t; | |
507 | t = n; | |
508 | ||
509 | n = xmalloc(sizeof(*n)); | |
64e6c1e1 | 510 | n->string = xstrdup("{"); |
78c04153 SR |
511 | n->tag = SYM_NORMAL; |
512 | n->next = t; | |
64e6c1e1 AG |
513 | t = n; |
514 | ||
515 | n = xmalloc(sizeof(*n)); | |
516 | n->string = xstrdup("UNKNOWN"); | |
517 | n->tag = SYM_NORMAL; | |
518 | n->next = t; | |
519 | t = n; | |
520 | ||
521 | n = xmalloc(sizeof(*n)); | |
522 | n->string = xstrdup("}"); | |
523 | n->tag = SYM_NORMAL; | |
524 | n->next = t; | |
525 | t = n; | |
78c04153 SR |
526 | |
527 | subsym = | |
528 | add_symbol(cur->string, cur->tag, n, 0); | |
529 | } | |
530 | if (subsym->expansion_trail) { | |
531 | if (flag_dump_defs) { | |
532 | fprintf(debugfile, "%s %s ", | |
533 | symbol_type_name[cur->tag], | |
534 | cur->string); | |
535 | } | |
536 | ||
ce560686 SR |
537 | crc = partial_crc32(symbol_type_name[cur->tag], |
538 | crc); | |
78c04153 SR |
539 | crc = partial_crc32_one(' ', crc); |
540 | crc = partial_crc32(cur->string, crc); | |
541 | crc = partial_crc32_one(' ', crc); | |
542 | } else { | |
543 | subsym->expansion_trail = expansion_trail; | |
544 | expansion_trail = subsym; | |
15fde675 | 545 | crc = expand_and_crc_sym(subsym, crc); |
78c04153 SR |
546 | } |
547 | break; | |
1da177e4 | 548 | } |
1da177e4 | 549 | } |
1da177e4 | 550 | |
15fde675 AG |
551 | { |
552 | static struct symbol **end = &visited_symbols; | |
553 | ||
554 | if (!sym->visited) { | |
555 | *end = sym; | |
556 | end = &sym->visited; | |
557 | sym->visited = (struct symbol *)-1L; | |
558 | } | |
559 | } | |
560 | ||
78c04153 | 561 | return crc; |
1da177e4 LT |
562 | } |
563 | ||
78c04153 | 564 | void export_symbol(const char *name) |
1da177e4 | 565 | { |
78c04153 | 566 | struct symbol *sym; |
1da177e4 | 567 | |
78c04153 SR |
568 | sym = find_symbol(name, SYM_NORMAL); |
569 | if (!sym) | |
570 | error_with_pos("export undefined symbol %s", name); | |
571 | else { | |
572 | unsigned long crc; | |
64e6c1e1 | 573 | int has_changed = 0; |
1da177e4 | 574 | |
78c04153 SR |
575 | if (flag_dump_defs) |
576 | fprintf(debugfile, "Export %s == <", name); | |
1da177e4 | 577 | |
78c04153 | 578 | expansion_trail = (struct symbol *)-1L; |
1da177e4 | 579 | |
64e6c1e1 AG |
580 | sym->expansion_trail = expansion_trail; |
581 | expansion_trail = sym; | |
15fde675 | 582 | crc = expand_and_crc_sym(sym, 0xffffffff) ^ 0xffffffff; |
1da177e4 | 583 | |
78c04153 SR |
584 | sym = expansion_trail; |
585 | while (sym != (struct symbol *)-1L) { | |
586 | struct symbol *n = sym->expansion_trail; | |
64e6c1e1 AG |
587 | |
588 | if (sym->status != STATUS_UNCHANGED) { | |
589 | if (!has_changed) { | |
590 | print_location(); | |
591 | fprintf(stderr, "%s: %s: modversion " | |
592 | "changed because of changes " | |
593 | "in ", flag_preserve ? "error" : | |
594 | "warning", name); | |
595 | } else | |
596 | fprintf(stderr, ", "); | |
597 | print_type_name(sym->type, sym->name); | |
598 | if (sym->status == STATUS_DEFINED) | |
599 | fprintf(stderr, " (became defined)"); | |
600 | has_changed = 1; | |
601 | if (flag_preserve) | |
602 | errors++; | |
603 | } | |
78c04153 SR |
604 | sym->expansion_trail = 0; |
605 | sym = n; | |
606 | } | |
64e6c1e1 AG |
607 | if (has_changed) |
608 | fprintf(stderr, "\n"); | |
1da177e4 | 609 | |
78c04153 SR |
610 | if (flag_dump_defs) |
611 | fputs(">\n", debugfile); | |
1da177e4 | 612 | |
2ea03891 SR |
613 | /* Used as a linker script. */ |
614 | printf("%s__crc_%s = 0x%08lx ;\n", mod_prefix, name, crc); | |
78c04153 | 615 | } |
1da177e4 LT |
616 | } |
617 | ||
618 | /*----------------------------------------------------------------------*/ | |
64e6c1e1 AG |
619 | |
620 | static void print_location(void) | |
621 | { | |
622 | fprintf(stderr, "%s:%d: ", cur_filename ? : "<stdin>", cur_line); | |
623 | } | |
624 | ||
625 | static void print_type_name(enum symbol_type type, const char *name) | |
626 | { | |
627 | if (type != SYM_NORMAL) | |
628 | fprintf(stderr, "%s %s", symbol_type_name[type], name); | |
629 | else | |
630 | fprintf(stderr, "%s", name); | |
631 | } | |
632 | ||
78c04153 | 633 | void error_with_pos(const char *fmt, ...) |
1da177e4 | 634 | { |
78c04153 | 635 | va_list args; |
1da177e4 | 636 | |
78c04153 | 637 | if (flag_warnings) { |
64e6c1e1 | 638 | print_location(); |
1da177e4 | 639 | |
78c04153 SR |
640 | va_start(args, fmt); |
641 | vfprintf(stderr, fmt, args); | |
642 | va_end(args); | |
643 | putc('\n', stderr); | |
1da177e4 | 644 | |
78c04153 SR |
645 | errors++; |
646 | } | |
1da177e4 LT |
647 | } |
648 | ||
ce560686 | 649 | static void genksyms_usage(void) |
1da177e4 | 650 | { |
2ea03891 | 651 | fputs("Usage:\n" "genksyms [-adDTwqhV] > /path/to/.tmp_obj.ver\n" "\n" |
1da177e4 | 652 | #ifdef __GNU_LIBRARY__ |
36091fd3 | 653 | " -a, --arch Select architecture\n" |
1da177e4 LT |
654 | " -d, --debug Increment the debug level (repeatable)\n" |
655 | " -D, --dump Dump expanded symbol defs (for debugging only)\n" | |
64e6c1e1 AG |
656 | " -r, --reference file Read reference symbols from a file\n" |
657 | " -T, --dump-types file Dump expanded types into file\n" | |
658 | " -p, --preserve Preserve reference modversions or fail\n" | |
1da177e4 LT |
659 | " -w, --warnings Enable warnings\n" |
660 | " -q, --quiet Disable warnings (default)\n" | |
661 | " -h, --help Print this message\n" | |
662 | " -V, --version Print the release version\n" | |
78c04153 | 663 | #else /* __GNU_LIBRARY__ */ |
36091fd3 | 664 | " -a Select architecture\n" |
78c04153 SR |
665 | " -d Increment the debug level (repeatable)\n" |
666 | " -D Dump expanded symbol defs (for debugging only)\n" | |
64e6c1e1 AG |
667 | " -r file Read reference symbols from a file\n" |
668 | " -T file Dump expanded types into file\n" | |
669 | " -p Preserve reference modversions or fail\n" | |
78c04153 SR |
670 | " -w Enable warnings\n" |
671 | " -q Disable warnings (default)\n" | |
672 | " -h Print this message\n" | |
673 | " -V Print the release version\n" | |
674 | #endif /* __GNU_LIBRARY__ */ | |
1da177e4 LT |
675 | , stderr); |
676 | } | |
677 | ||
78c04153 | 678 | int main(int argc, char **argv) |
1da177e4 | 679 | { |
64e6c1e1 | 680 | FILE *dumpfile = NULL, *ref_file = NULL; |
78c04153 | 681 | int o; |
1da177e4 LT |
682 | |
683 | #ifdef __GNU_LIBRARY__ | |
78c04153 SR |
684 | struct option long_opts[] = { |
685 | {"arch", 1, 0, 'a'}, | |
686 | {"debug", 0, 0, 'd'}, | |
687 | {"warnings", 0, 0, 'w'}, | |
688 | {"quiet", 0, 0, 'q'}, | |
689 | {"dump", 0, 0, 'D'}, | |
64e6c1e1 | 690 | {"reference", 1, 0, 'r'}, |
15fde675 | 691 | {"dump-types", 1, 0, 'T'}, |
64e6c1e1 | 692 | {"preserve", 0, 0, 'p'}, |
78c04153 SR |
693 | {"version", 0, 0, 'V'}, |
694 | {"help", 0, 0, 'h'}, | |
695 | {0, 0, 0, 0} | |
696 | }; | |
697 | ||
2ea03891 | 698 | while ((o = getopt_long(argc, argv, "a:dwqVDr:T:ph", |
78c04153 SR |
699 | &long_opts[0], NULL)) != EOF) |
700 | #else /* __GNU_LIBRARY__ */ | |
2ea03891 | 701 | while ((o = getopt(argc, argv, "a:dwqVDr:T:ph")) != EOF) |
78c04153 SR |
702 | #endif /* __GNU_LIBRARY__ */ |
703 | switch (o) { | |
704 | case 'a': | |
705 | arch = optarg; | |
706 | break; | |
707 | case 'd': | |
708 | flag_debug++; | |
709 | break; | |
710 | case 'w': | |
711 | flag_warnings = 1; | |
712 | break; | |
713 | case 'q': | |
714 | flag_warnings = 0; | |
715 | break; | |
716 | case 'V': | |
717 | fputs("genksyms version 2.5.60\n", stderr); | |
718 | break; | |
719 | case 'D': | |
720 | flag_dump_defs = 1; | |
721 | break; | |
64e6c1e1 AG |
722 | case 'r': |
723 | flag_reference = 1; | |
724 | ref_file = fopen(optarg, "r"); | |
725 | if (!ref_file) { | |
726 | perror(optarg); | |
727 | return 1; | |
728 | } | |
729 | break; | |
15fde675 AG |
730 | case 'T': |
731 | flag_dump_types = 1; | |
732 | dumpfile = fopen(optarg, "w"); | |
733 | if (!dumpfile) { | |
734 | perror(optarg); | |
735 | return 1; | |
736 | } | |
737 | break; | |
64e6c1e1 AG |
738 | case 'p': |
739 | flag_preserve = 1; | |
740 | break; | |
78c04153 SR |
741 | case 'h': |
742 | genksyms_usage(); | |
743 | return 0; | |
744 | default: | |
745 | genksyms_usage(); | |
746 | return 1; | |
747 | } | |
f606ddf4 | 748 | if ((strcmp(arch, "h8300") == 0) || (strcmp(arch, "blackfin") == 0)) |
78c04153 SR |
749 | mod_prefix = "_"; |
750 | { | |
751 | extern int yydebug; | |
752 | extern int yy_flex_debug; | |
753 | ||
754 | yydebug = (flag_debug > 1); | |
755 | yy_flex_debug = (flag_debug > 2); | |
756 | ||
757 | debugfile = stderr; | |
758 | /* setlinebuf(debugfile); */ | |
759 | } | |
760 | ||
64e6c1e1 AG |
761 | if (flag_reference) |
762 | read_reference(ref_file); | |
763 | ||
78c04153 SR |
764 | yyparse(); |
765 | ||
15fde675 AG |
766 | if (flag_dump_types && visited_symbols) { |
767 | while (visited_symbols != (struct symbol *)-1L) { | |
768 | struct symbol *sym = visited_symbols; | |
769 | ||
5dae9a55 AG |
770 | if (sym->is_override) |
771 | fputs("override ", dumpfile); | |
15fde675 AG |
772 | if (sym->type != SYM_NORMAL) { |
773 | putc(symbol_type_name[sym->type][0], dumpfile); | |
774 | putc('#', dumpfile); | |
775 | } | |
776 | fputs(sym->name, dumpfile); | |
777 | putc(' ', dumpfile); | |
3b40d381 AG |
778 | if (sym->is_extern) |
779 | fputs("extern ", dumpfile); | |
15fde675 AG |
780 | print_list(dumpfile, sym->defn); |
781 | putc('\n', dumpfile); | |
782 | ||
783 | visited_symbols = sym->visited; | |
784 | sym->visited = NULL; | |
785 | } | |
786 | } | |
787 | ||
78c04153 SR |
788 | if (flag_debug) { |
789 | fprintf(debugfile, "Hash table occupancy %d/%d = %g\n", | |
790 | nsyms, HASH_BUCKETS, | |
791 | (double)nsyms / (double)HASH_BUCKETS); | |
792 | } | |
793 | ||
794 | return errors != 0; | |
1da177e4 | 795 | } |