Commit | Line | Data |
---|---|---|
89fc3421 CC |
1 | /* test_plugin.c -- simple linker plugin test |
2 | ||
219d1afa | 3 | Copyright (C) 2008-2018 Free Software Foundation, Inc. |
89fc3421 CC |
4 | Written by Cary Coutant <ccoutant@google.com>. |
5 | ||
6 | This file is part of gold. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | MA 02110-1301, USA. */ | |
22 | ||
88ee28e9 L |
23 | #ifdef HAVE_CONFIG_H |
24 | #include "config.h" | |
25 | #endif | |
26 | ||
89fc3421 CC |
27 | #include <stdio.h> |
28 | #include <stdlib.h> | |
29 | #include <string.h> | |
30 | #include "plugin-api.h" | |
31 | ||
32 | struct claimed_file | |
33 | { | |
34 | const char* name; | |
35 | void* handle; | |
36 | int nsyms; | |
37 | struct ld_plugin_symbol* syms; | |
38 | struct claimed_file* next; | |
39 | }; | |
40 | ||
0f7c0701 CC |
41 | struct sym_info |
42 | { | |
43 | int size; | |
44 | char* type; | |
45 | char* bind; | |
46 | char* vis; | |
47 | char* sect; | |
48 | char* name; | |
49 | }; | |
50 | ||
89fc3421 CC |
51 | static struct claimed_file* first_claimed_file = NULL; |
52 | static struct claimed_file* last_claimed_file = NULL; | |
53 | ||
54 | static ld_plugin_register_claim_file register_claim_file_hook = NULL; | |
55 | static ld_plugin_register_all_symbols_read register_all_symbols_read_hook = NULL; | |
56 | static ld_plugin_register_cleanup register_cleanup_hook = NULL; | |
57 | static ld_plugin_add_symbols add_symbols = NULL; | |
58 | static ld_plugin_get_symbols get_symbols = NULL; | |
235061c2 | 59 | static ld_plugin_get_symbols get_symbols_v2 = NULL; |
95ecdfbf | 60 | static ld_plugin_get_symbols get_symbols_v3 = NULL; |
89fc3421 CC |
61 | static ld_plugin_add_input_file add_input_file = NULL; |
62 | static ld_plugin_message message = NULL; | |
0f7c0701 CC |
63 | static ld_plugin_get_input_file get_input_file = NULL; |
64 | static ld_plugin_release_input_file release_input_file = NULL; | |
e9552f7e ST |
65 | static ld_plugin_get_input_section_count get_input_section_count = NULL; |
66 | static ld_plugin_get_input_section_type get_input_section_type = NULL; | |
67 | static ld_plugin_get_input_section_name get_input_section_name = NULL; | |
68 | static ld_plugin_get_input_section_contents get_input_section_contents = NULL; | |
69 | static ld_plugin_update_section_order update_section_order = NULL; | |
70 | static ld_plugin_allow_section_ordering allow_section_ordering = NULL; | |
89fc3421 CC |
71 | |
72 | #define MAXOPTS 10 | |
73 | ||
74 | static const char *opts[MAXOPTS]; | |
75 | static int nopts = 0; | |
76 | ||
77 | enum ld_plugin_status onload(struct ld_plugin_tv *tv); | |
78 | enum ld_plugin_status claim_file_hook(const struct ld_plugin_input_file *file, | |
79 | int *claimed); | |
80 | enum ld_plugin_status all_symbols_read_hook(void); | |
81 | enum ld_plugin_status cleanup_hook(void); | |
82 | ||
0f7c0701 CC |
83 | static void parse_readelf_line(char*, struct sym_info*); |
84 | ||
89fc3421 CC |
85 | enum ld_plugin_status |
86 | onload(struct ld_plugin_tv *tv) | |
87 | { | |
88 | struct ld_plugin_tv *entry; | |
89 | int api_version = 0; | |
90 | int gold_version = 0; | |
91 | int i; | |
92 | ||
93 | for (entry = tv; entry->tv_tag != LDPT_NULL; ++entry) | |
94 | { | |
95 | switch (entry->tv_tag) | |
96 | { | |
97 | case LDPT_API_VERSION: | |
98 | api_version = entry->tv_u.tv_val; | |
99 | break; | |
100 | case LDPT_GOLD_VERSION: | |
101 | gold_version = entry->tv_u.tv_val; | |
102 | break; | |
103 | case LDPT_LINKER_OUTPUT: | |
104 | break; | |
105 | case LDPT_OPTION: | |
106 | if (nopts < MAXOPTS) | |
107 | opts[nopts++] = entry->tv_u.tv_string; | |
108 | break; | |
109 | case LDPT_REGISTER_CLAIM_FILE_HOOK: | |
110 | register_claim_file_hook = entry->tv_u.tv_register_claim_file; | |
111 | break; | |
112 | case LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK: | |
113 | register_all_symbols_read_hook = | |
114 | entry->tv_u.tv_register_all_symbols_read; | |
115 | break; | |
116 | case LDPT_REGISTER_CLEANUP_HOOK: | |
117 | register_cleanup_hook = entry->tv_u.tv_register_cleanup; | |
118 | break; | |
119 | case LDPT_ADD_SYMBOLS: | |
120 | add_symbols = entry->tv_u.tv_add_symbols; | |
121 | break; | |
122 | case LDPT_GET_SYMBOLS: | |
123 | get_symbols = entry->tv_u.tv_get_symbols; | |
124 | break; | |
235061c2 CC |
125 | case LDPT_GET_SYMBOLS_V2: |
126 | get_symbols_v2 = entry->tv_u.tv_get_symbols; | |
127 | break; | |
95ecdfbf ES |
128 | case LDPT_GET_SYMBOLS_V3: |
129 | get_symbols_v3 = entry->tv_u.tv_get_symbols; | |
130 | break; | |
89fc3421 CC |
131 | case LDPT_ADD_INPUT_FILE: |
132 | add_input_file = entry->tv_u.tv_add_input_file; | |
133 | break; | |
134 | case LDPT_MESSAGE: | |
135 | message = entry->tv_u.tv_message; | |
136 | break; | |
0f7c0701 CC |
137 | case LDPT_GET_INPUT_FILE: |
138 | get_input_file = entry->tv_u.tv_get_input_file; | |
139 | break; | |
140 | case LDPT_RELEASE_INPUT_FILE: | |
141 | release_input_file = entry->tv_u.tv_release_input_file; | |
142 | break; | |
e9552f7e ST |
143 | case LDPT_GET_INPUT_SECTION_COUNT: |
144 | get_input_section_count = *entry->tv_u.tv_get_input_section_count; | |
145 | break; | |
146 | case LDPT_GET_INPUT_SECTION_TYPE: | |
147 | get_input_section_type = *entry->tv_u.tv_get_input_section_type; | |
148 | break; | |
149 | case LDPT_GET_INPUT_SECTION_NAME: | |
150 | get_input_section_name = *entry->tv_u.tv_get_input_section_name; | |
151 | break; | |
152 | case LDPT_GET_INPUT_SECTION_CONTENTS: | |
153 | get_input_section_contents = *entry->tv_u.tv_get_input_section_contents; | |
154 | break; | |
155 | case LDPT_UPDATE_SECTION_ORDER: | |
156 | update_section_order = *entry->tv_u.tv_update_section_order; | |
157 | break; | |
158 | case LDPT_ALLOW_SECTION_ORDERING: | |
159 | allow_section_ordering = *entry->tv_u.tv_allow_section_ordering; | |
160 | break; | |
89fc3421 CC |
161 | default: |
162 | break; | |
163 | } | |
164 | } | |
165 | ||
166 | if (message == NULL) | |
167 | { | |
168 | fprintf(stderr, "tv_message interface missing\n"); | |
169 | return LDPS_ERR; | |
170 | } | |
171 | ||
172 | if (register_claim_file_hook == NULL) | |
173 | { | |
174 | fprintf(stderr, "tv_register_claim_file_hook interface missing\n"); | |
175 | return LDPS_ERR; | |
176 | } | |
177 | ||
178 | if (register_all_symbols_read_hook == NULL) | |
179 | { | |
180 | fprintf(stderr, "tv_register_all_symbols_read_hook interface missing\n"); | |
181 | return LDPS_ERR; | |
182 | } | |
183 | ||
184 | if (register_cleanup_hook == NULL) | |
185 | { | |
186 | fprintf(stderr, "tv_register_cleanup_hook interface missing\n"); | |
187 | return LDPS_ERR; | |
188 | } | |
189 | ||
190 | (*message)(LDPL_INFO, "API version: %d", api_version); | |
191 | (*message)(LDPL_INFO, "gold version: %d", gold_version); | |
192 | ||
193 | for (i = 0; i < nopts; ++i) | |
194 | (*message)(LDPL_INFO, "option: %s", opts[i]); | |
195 | ||
196 | if ((*register_claim_file_hook)(claim_file_hook) != LDPS_OK) | |
197 | { | |
198 | (*message)(LDPL_ERROR, "error registering claim file hook"); | |
199 | return LDPS_ERR; | |
200 | } | |
201 | ||
202 | if ((*register_all_symbols_read_hook)(all_symbols_read_hook) != LDPS_OK) | |
203 | { | |
204 | (*message)(LDPL_ERROR, "error registering all symbols read hook"); | |
205 | return LDPS_ERR; | |
206 | } | |
207 | ||
208 | if ((*register_cleanup_hook)(cleanup_hook) != LDPS_OK) | |
209 | { | |
210 | (*message)(LDPL_ERROR, "error registering cleanup hook"); | |
211 | return LDPS_ERR; | |
212 | } | |
213 | ||
e9552f7e ST |
214 | if (get_input_section_count == NULL) |
215 | { | |
216 | fprintf(stderr, "tv_get_input_section_count interface missing\n"); | |
217 | return LDPS_ERR; | |
218 | } | |
219 | ||
220 | if (get_input_section_type == NULL) | |
221 | { | |
222 | fprintf(stderr, "tv_get_input_section_type interface missing\n"); | |
223 | return LDPS_ERR; | |
224 | } | |
225 | ||
226 | if (get_input_section_name == NULL) | |
227 | { | |
228 | fprintf(stderr, "tv_get_input_section_name interface missing\n"); | |
229 | return LDPS_ERR; | |
230 | } | |
231 | ||
232 | if (get_input_section_contents == NULL) | |
233 | { | |
234 | fprintf(stderr, "tv_get_input_section_contents interface missing\n"); | |
235 | return LDPS_ERR; | |
236 | } | |
237 | ||
238 | if (update_section_order == NULL) | |
239 | { | |
240 | fprintf(stderr, "tv_update_section_order interface missing\n"); | |
241 | return LDPS_ERR; | |
242 | } | |
243 | ||
244 | if (allow_section_ordering == NULL) | |
245 | { | |
246 | fprintf(stderr, "tv_allow_section_ordering interface missing\n"); | |
247 | return LDPS_ERR; | |
248 | } | |
249 | ||
89fc3421 CC |
250 | return LDPS_OK; |
251 | } | |
252 | ||
253 | enum ld_plugin_status | |
254 | claim_file_hook (const struct ld_plugin_input_file* file, int* claimed) | |
255 | { | |
256 | int len; | |
0f7c0701 | 257 | off_t end_offset; |
89fc3421 CC |
258 | char buf[160]; |
259 | struct claimed_file* claimed_file; | |
260 | struct ld_plugin_symbol* syms; | |
261 | int nsyms = 0; | |
262 | int maxsyms = 0; | |
263 | FILE* irfile; | |
0f7c0701 | 264 | struct sym_info info; |
89fc3421 CC |
265 | int weak; |
266 | int def; | |
267 | int vis; | |
89fc3421 CC |
268 | int is_comdat; |
269 | int i; | |
2cfbf2fe CC |
270 | int irfile_was_opened = 0; |
271 | char syms_name[80]; | |
89fc3421 CC |
272 | |
273 | (*message)(LDPL_INFO, | |
274 | "%s: claim file hook called (offset = %ld, size = %ld)", | |
275 | file->name, (long)file->offset, (long)file->filesize); | |
276 | ||
2cfbf2fe CC |
277 | /* Look for matching syms file for an archive member. */ |
278 | if (file->offset == 0) | |
279 | snprintf(syms_name, sizeof(syms_name), "%s.syms", file->name); | |
280 | else | |
281 | snprintf(syms_name, sizeof(syms_name), "%s-%d.syms", | |
282 | file->name, (int)file->offset); | |
283 | irfile = fopen(syms_name, "r"); | |
284 | if (irfile != NULL) | |
285 | { | |
286 | irfile_was_opened = 1; | |
287 | end_offset = 1 << 20; | |
288 | } | |
289 | ||
290 | /* Otherwise, see if the file itself is a syms file. */ | |
291 | if (!irfile_was_opened) | |
292 | { | |
293 | irfile = fdopen(file->fd, "r"); | |
294 | (void)fseek(irfile, file->offset, SEEK_SET); | |
295 | end_offset = file->offset + file->filesize; | |
296 | } | |
297 | ||
89fc3421 | 298 | /* Look for the beginning of output from readelf -s. */ |
89fc3421 CC |
299 | len = fread(buf, 1, 13, irfile); |
300 | if (len < 13 || strncmp(buf, "\nSymbol table", 13) != 0) | |
301 | return LDPS_OK; | |
302 | ||
303 | /* Skip the two header lines. */ | |
304 | (void) fgets(buf, sizeof(buf), irfile); | |
305 | (void) fgets(buf, sizeof(buf), irfile); | |
306 | ||
307 | if (add_symbols == NULL) | |
308 | { | |
309 | fprintf(stderr, "tv_add_symbols interface missing\n"); | |
310 | return LDPS_ERR; | |
311 | } | |
312 | ||
313 | /* Parse the output from readelf. The columns are: | |
314 | Index Value Size Type Binding Visibility Section Name. */ | |
315 | syms = (struct ld_plugin_symbol*)malloc(sizeof(struct ld_plugin_symbol) * 8); | |
316 | if (syms == NULL) | |
317 | return LDPS_ERR; | |
318 | maxsyms = 8; | |
0f7c0701 CC |
319 | while (ftell(irfile) < end_offset |
320 | && fgets(buf, sizeof(buf), irfile) != NULL) | |
89fc3421 | 321 | { |
0f7c0701 | 322 | parse_readelf_line(buf, &info); |
89fc3421 CC |
323 | |
324 | /* Ignore local symbols. */ | |
0f7c0701 | 325 | if (strncmp(info.bind, "LOCAL", 5) == 0) |
89fc3421 CC |
326 | continue; |
327 | ||
0f7c0701 CC |
328 | weak = strncmp(info.bind, "WEAK", 4) == 0; |
329 | if (strncmp(info.sect, "UND", 3) == 0) | |
89fc3421 | 330 | def = weak ? LDPK_WEAKUNDEF : LDPK_UNDEF; |
0f7c0701 | 331 | else if (strncmp(info.sect, "COM", 3) == 0) |
89fc3421 CC |
332 | def = LDPK_COMMON; |
333 | else | |
334 | def = weak ? LDPK_WEAKDEF : LDPK_DEF; | |
335 | ||
0f7c0701 | 336 | if (strncmp(info.vis, "INTERNAL", 8) == 0) |
89fc3421 | 337 | vis = LDPV_INTERNAL; |
0f7c0701 | 338 | else if (strncmp(info.vis, "HIDDEN", 6) == 0) |
89fc3421 | 339 | vis = LDPV_HIDDEN; |
0f7c0701 | 340 | else if (strncmp(info.vis, "PROTECTED", 9) == 0) |
89fc3421 CC |
341 | vis = LDPV_PROTECTED; |
342 | else | |
343 | vis = LDPV_DEFAULT; | |
344 | ||
345 | /* If the symbol is listed in the options list, special-case | |
346 | it as a comdat symbol. */ | |
347 | is_comdat = 0; | |
348 | for (i = 0; i < nopts; ++i) | |
349 | { | |
0f7c0701 | 350 | if (info.name != NULL && strcmp(info.name, opts[i]) == 0) |
89fc3421 CC |
351 | { |
352 | is_comdat = 1; | |
353 | break; | |
354 | } | |
355 | } | |
356 | ||
357 | if (nsyms >= maxsyms) | |
358 | { | |
359 | syms = (struct ld_plugin_symbol*) | |
360 | realloc(syms, sizeof(struct ld_plugin_symbol) * maxsyms * 2); | |
361 | if (syms == NULL) | |
362 | return LDPS_ERR; | |
363 | maxsyms *= 2; | |
364 | } | |
365 | ||
0f7c0701 CC |
366 | if (info.name == NULL) |
367 | syms[nsyms].name = NULL; | |
368 | else | |
369 | { | |
370 | len = strlen(info.name); | |
371 | syms[nsyms].name = malloc(len + 1); | |
372 | strncpy(syms[nsyms].name, info.name, len + 1); | |
373 | } | |
89fc3421 CC |
374 | syms[nsyms].version = NULL; |
375 | syms[nsyms].def = def; | |
376 | syms[nsyms].visibility = vis; | |
0f7c0701 CC |
377 | syms[nsyms].size = info.size; |
378 | syms[nsyms].comdat_key = is_comdat ? syms[nsyms].name : NULL; | |
89fc3421 CC |
379 | syms[nsyms].resolution = LDPR_UNKNOWN; |
380 | ++nsyms; | |
381 | } | |
382 | ||
383 | claimed_file = (struct claimed_file*) malloc(sizeof(struct claimed_file)); | |
384 | if (claimed_file == NULL) | |
385 | return LDPS_ERR; | |
386 | ||
387 | claimed_file->name = file->name; | |
388 | claimed_file->handle = file->handle; | |
389 | claimed_file->nsyms = nsyms; | |
390 | claimed_file->syms = syms; | |
391 | claimed_file->next = NULL; | |
392 | if (last_claimed_file == NULL) | |
393 | first_claimed_file = claimed_file; | |
394 | else | |
395 | last_claimed_file->next = claimed_file; | |
396 | last_claimed_file = claimed_file; | |
397 | ||
abc8dcba CC |
398 | (*message)(LDPL_INFO, "%s: claiming file, adding %d symbols", |
399 | file->name, nsyms); | |
400 | ||
401 | if (nsyms > 0) | |
402 | (*add_symbols)(file->handle, nsyms, syms); | |
89fc3421 CC |
403 | |
404 | *claimed = 1; | |
2cfbf2fe CC |
405 | if (irfile_was_opened) |
406 | fclose(irfile); | |
89fc3421 CC |
407 | return LDPS_OK; |
408 | } | |
409 | ||
410 | enum ld_plugin_status | |
411 | all_symbols_read_hook(void) | |
412 | { | |
413 | int i; | |
414 | const char* res; | |
415 | struct claimed_file* claimed_file; | |
0f7c0701 CC |
416 | struct ld_plugin_input_file file; |
417 | FILE* irfile; | |
418 | off_t end_offset; | |
419 | struct sym_info info; | |
420 | int len; | |
89fc3421 | 421 | char buf[160]; |
0f7c0701 CC |
422 | char* p; |
423 | const char* filename; | |
89fc3421 CC |
424 | |
425 | (*message)(LDPL_INFO, "all symbols read hook called"); | |
426 | ||
95ecdfbf | 427 | if (get_symbols_v3 == NULL) |
89fc3421 | 428 | { |
95ecdfbf | 429 | fprintf(stderr, "tv_get_symbols (v3) interface missing\n"); |
89fc3421 CC |
430 | return LDPS_ERR; |
431 | } | |
432 | ||
433 | for (claimed_file = first_claimed_file; | |
434 | claimed_file != NULL; | |
435 | claimed_file = claimed_file->next) | |
436 | { | |
95ecdfbf ES |
437 | enum ld_plugin_status status = (*get_symbols_v3)( |
438 | claimed_file->handle, claimed_file->nsyms, claimed_file->syms); | |
439 | if (status == LDPS_NO_SYMS) | |
440 | { | |
441 | (*message)(LDPL_INFO, "%s: no symbols", claimed_file->name); | |
442 | continue; | |
443 | } | |
0f7c0701 | 444 | |
89fc3421 CC |
445 | for (i = 0; i < claimed_file->nsyms; ++i) |
446 | { | |
447 | switch (claimed_file->syms[i].resolution) | |
448 | { | |
449 | case LDPR_UNKNOWN: | |
450 | res = "UNKNOWN"; | |
451 | break; | |
452 | case LDPR_UNDEF: | |
453 | res = "UNDEF"; | |
454 | break; | |
455 | case LDPR_PREVAILING_DEF: | |
456 | res = "PREVAILING_DEF_REG"; | |
457 | break; | |
458 | case LDPR_PREVAILING_DEF_IRONLY: | |
459 | res = "PREVAILING_DEF_IRONLY"; | |
460 | break; | |
235061c2 CC |
461 | case LDPR_PREVAILING_DEF_IRONLY_EXP: |
462 | res = "PREVAILING_DEF_IRONLY_EXP"; | |
463 | break; | |
89fc3421 CC |
464 | case LDPR_PREEMPTED_REG: |
465 | res = "PREEMPTED_REG"; | |
466 | break; | |
467 | case LDPR_PREEMPTED_IR: | |
468 | res = "PREEMPTED_IR"; | |
469 | break; | |
470 | case LDPR_RESOLVED_IR: | |
471 | res = "RESOLVED_IR"; | |
472 | break; | |
473 | case LDPR_RESOLVED_EXEC: | |
474 | res = "RESOLVED_EXEC"; | |
475 | break; | |
476 | case LDPR_RESOLVED_DYN: | |
477 | res = "RESOLVED_DYN"; | |
478 | break; | |
479 | default: | |
480 | res = "?"; | |
481 | break; | |
482 | } | |
483 | (*message)(LDPL_INFO, "%s: %s: %s", claimed_file->name, | |
484 | claimed_file->syms[i].name, res); | |
485 | } | |
486 | } | |
487 | ||
488 | if (add_input_file == NULL) | |
489 | { | |
490 | fprintf(stderr, "tv_add_input_file interface missing\n"); | |
491 | return LDPS_ERR; | |
492 | } | |
0f7c0701 CC |
493 | if (get_input_file == NULL) |
494 | { | |
495 | fprintf(stderr, "tv_get_input_file interface missing\n"); | |
496 | return LDPS_ERR; | |
497 | } | |
498 | if (release_input_file == NULL) | |
499 | { | |
500 | fprintf(stderr, "tv_release_input_file interface missing\n"); | |
501 | return LDPS_ERR; | |
502 | } | |
89fc3421 CC |
503 | |
504 | for (claimed_file = first_claimed_file; | |
505 | claimed_file != NULL; | |
506 | claimed_file = claimed_file->next) | |
507 | { | |
2cfbf2fe CC |
508 | int irfile_was_opened = 0; |
509 | char syms_name[80]; | |
510 | ||
0f7c0701 CC |
511 | (*get_input_file) (claimed_file->handle, &file); |
512 | ||
2cfbf2fe CC |
513 | if (file.offset == 0) |
514 | snprintf(syms_name, sizeof(syms_name), "%s.syms", file.name); | |
515 | else | |
516 | snprintf(syms_name, sizeof(syms_name), "%s-%d.syms", | |
517 | file.name, (int)file.offset); | |
518 | irfile = fopen(syms_name, "r"); | |
519 | if (irfile != NULL) | |
520 | { | |
521 | irfile_was_opened = 1; | |
522 | end_offset = 1 << 20; | |
523 | } | |
524 | ||
525 | if (!irfile_was_opened) | |
526 | { | |
527 | irfile = fdopen(file.fd, "r"); | |
528 | (void)fseek(irfile, file.offset, SEEK_SET); | |
529 | end_offset = file.offset + file.filesize; | |
530 | } | |
531 | ||
0f7c0701 | 532 | /* Look for the beginning of output from readelf -s. */ |
0f7c0701 CC |
533 | len = fread(buf, 1, 13, irfile); |
534 | if (len < 13 || strncmp(buf, "\nSymbol table", 13) != 0) | |
535 | { | |
536 | fprintf(stderr, "%s: can't re-read original input file\n", | |
537 | claimed_file->name); | |
538 | return LDPS_ERR; | |
539 | } | |
540 | ||
541 | /* Skip the two header lines. */ | |
542 | (void) fgets(buf, sizeof(buf), irfile); | |
543 | (void) fgets(buf, sizeof(buf), irfile); | |
544 | ||
545 | filename = NULL; | |
546 | while (ftell(irfile) < end_offset | |
547 | && fgets(buf, sizeof(buf), irfile) != NULL) | |
548 | { | |
549 | parse_readelf_line(buf, &info); | |
550 | ||
551 | /* Look for file name. */ | |
552 | if (strncmp(info.type, "FILE", 4) == 0) | |
553 | { | |
554 | len = strlen(info.name); | |
555 | p = malloc(len + 1); | |
556 | strncpy(p, info.name, len + 1); | |
557 | filename = p; | |
558 | break; | |
559 | } | |
560 | } | |
561 | ||
2cfbf2fe CC |
562 | if (irfile_was_opened) |
563 | fclose(irfile); | |
564 | ||
0f7c0701 CC |
565 | (*release_input_file) (claimed_file->handle); |
566 | ||
567 | if (filename == NULL) | |
568 | filename = claimed_file->name; | |
569 | ||
abc8dcba CC |
570 | if (claimed_file->nsyms == 0) |
571 | continue; | |
0f7c0701 CC |
572 | |
573 | if (strlen(filename) >= sizeof(buf)) | |
89fc3421 | 574 | { |
0f7c0701 | 575 | (*message)(LDPL_FATAL, "%s: filename too long", filename); |
89fc3421 CC |
576 | return LDPS_ERR; |
577 | } | |
0f7c0701 | 578 | strcpy(buf, filename); |
89fc3421 | 579 | p = strrchr(buf, '.'); |
0f7c0701 CC |
580 | if (p == NULL |
581 | || (strcmp(p, ".syms") != 0 | |
582 | && strcmp(p, ".c") != 0 | |
583 | && strcmp(p, ".cc") != 0)) | |
89fc3421 | 584 | { |
0f7c0701 CC |
585 | (*message)(LDPL_FATAL, "%s: filename has unknown suffix", |
586 | filename); | |
89fc3421 CC |
587 | return LDPS_ERR; |
588 | } | |
589 | p[1] = 'o'; | |
590 | p[2] = '\0'; | |
0f7c0701 | 591 | (*message)(LDPL_INFO, "%s: adding new input file", buf); |
89fc3421 CC |
592 | (*add_input_file)(buf); |
593 | } | |
594 | ||
595 | return LDPS_OK; | |
596 | } | |
597 | ||
598 | enum ld_plugin_status | |
599 | cleanup_hook(void) | |
600 | { | |
601 | (*message)(LDPL_INFO, "cleanup hook called"); | |
602 | return LDPS_OK; | |
603 | } | |
0f7c0701 CC |
604 | |
605 | static void | |
606 | parse_readelf_line(char* p, struct sym_info* info) | |
607 | { | |
608 | int len; | |
609 | ||
610 | p += strspn(p, " "); | |
611 | ||
612 | /* Index field. */ | |
613 | p += strcspn(p, " "); | |
614 | p += strspn(p, " "); | |
615 | ||
616 | /* Value field. */ | |
617 | p += strcspn(p, " "); | |
618 | p += strspn(p, " "); | |
619 | ||
620 | /* Size field. */ | |
621 | info->size = atoi(p); | |
622 | p += strcspn(p, " "); | |
623 | p += strspn(p, " "); | |
624 | ||
625 | /* Type field. */ | |
626 | info->type = p; | |
627 | p += strcspn(p, " "); | |
628 | p += strspn(p, " "); | |
629 | ||
630 | /* Binding field. */ | |
631 | info->bind = p; | |
632 | p += strcspn(p, " "); | |
633 | p += strspn(p, " "); | |
634 | ||
635 | /* Visibility field. */ | |
636 | info->vis = p; | |
637 | p += strcspn(p, " "); | |
638 | p += strspn(p, " "); | |
639 | ||
61f5c66f AM |
640 | if (*p == '[') |
641 | { | |
642 | /* Skip st_other. */ | |
643 | p += strcspn(p, "]"); | |
644 | p += strspn(p, "] "); | |
645 | } | |
646 | ||
0f7c0701 CC |
647 | /* Section field. */ |
648 | info->sect = p; | |
649 | p += strcspn(p, " "); | |
650 | p += strspn(p, " "); | |
651 | ||
652 | /* Name field. */ | |
653 | /* FIXME: Look for version. */ | |
654 | len = strlen(p); | |
655 | if (len == 0) | |
656 | p = NULL; | |
657 | else if (p[len-1] == '\n') | |
658 | p[--len] = '\0'; | |
659 | info->name = p; | |
660 | } |