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ded3d3f8 | 1 | /* Routines required for instrumenting a program. */ |
2 | /* Compile this one with gcc. */ | |
fbd26352 | 3 | /* Copyright (C) 1989-2019 Free Software Foundation, Inc. |
ded3d3f8 | 4 | |
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 3, or (at your option) any later | |
10 | version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | Under Section 7 of GPL version 3, you are granted additional | |
18 | permissions described in the GCC Runtime Library Exception, version | |
19 | 3.1, as published by the Free Software Foundation. | |
20 | ||
21 | You should have received a copy of the GNU General Public License and | |
22 | a copy of the GCC Runtime Library Exception along with this program; | |
23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 | <http://www.gnu.org/licenses/>. */ | |
25 | ||
67745126 | 26 | #include "libgcov.h" |
56621355 | 27 | #include "gcov-io.h" |
ded3d3f8 | 28 | |
29 | #if defined(inhibit_libc) | |
30 | /* If libc and its header files are not available, provide dummy functions. */ | |
31 | ||
32 | #if defined(L_gcov) | |
33 | void __gcov_init (struct gcov_info *p __attribute__ ((unused))) {} | |
34 | #endif | |
35 | ||
36 | #else /* inhibit_libc */ | |
37 | ||
38 | #include <string.h> | |
39 | #if GCOV_LOCKED | |
40 | #include <fcntl.h> | |
41 | #include <errno.h> | |
42 | #include <sys/stat.h> | |
43 | #endif | |
44 | ||
45 | #ifdef L_gcov | |
f1919901 | 46 | |
3237fc56 | 47 | /* A utility function for outputting errors. */ |
f1919901 | 48 | static int gcov_error (const char *, ...); |
49 | ||
3237fc56 | 50 | #if !IN_GCOV_TOOL |
51 | static void gcov_error_exit (void); | |
52 | #endif | |
53 | ||
ded3d3f8 | 54 | #include "gcov-io.c" |
55 | ||
085a4ac7 | 56 | #define GCOV_PROF_PREFIX "libgcov profiling error:%s:" |
57 | ||
ded3d3f8 | 58 | struct gcov_fn_buffer |
59 | { | |
60 | struct gcov_fn_buffer *next; | |
61 | unsigned fn_ix; | |
62 | struct gcov_fn_info info; | |
63 | /* note gcov_fn_info ends in a trailing array. */ | |
64 | }; | |
65 | ||
66 | struct gcov_summary_buffer | |
67 | { | |
68 | struct gcov_summary_buffer *next; | |
69 | struct gcov_summary summary; | |
70 | }; | |
71 | ||
6401b74d | 72 | /* A struct that bundles all the related information about the |
73 | gcda filename. */ | |
74 | ||
75 | struct gcov_filename | |
76 | { | |
77 | char *filename; /* filename buffer */ | |
6401b74d | 78 | int strip; /* leading chars to strip from filename */ |
5b24ad4b | 79 | char *prefix; /* prefix string */ |
6401b74d | 80 | }; |
81 | ||
ded3d3f8 | 82 | static struct gcov_fn_buffer * |
83 | free_fn_data (const struct gcov_info *gi_ptr, struct gcov_fn_buffer *buffer, | |
84 | unsigned limit) | |
85 | { | |
86 | struct gcov_fn_buffer *next; | |
87 | unsigned ix, n_ctr = 0; | |
88 | ||
89 | if (!buffer) | |
90 | return 0; | |
91 | next = buffer->next; | |
92 | ||
93 | for (ix = 0; ix != limit; ix++) | |
94 | if (gi_ptr->merge[ix]) | |
95 | free (buffer->info.ctrs[n_ctr++].values); | |
96 | free (buffer); | |
97 | return next; | |
98 | } | |
99 | ||
100 | static struct gcov_fn_buffer ** | |
101 | buffer_fn_data (const char *filename, const struct gcov_info *gi_ptr, | |
102 | struct gcov_fn_buffer **end_ptr, unsigned fn_ix) | |
103 | { | |
104 | unsigned n_ctrs = 0, ix = 0; | |
105 | struct gcov_fn_buffer *fn_buffer; | |
106 | unsigned len; | |
107 | ||
108 | for (ix = GCOV_COUNTERS; ix--;) | |
109 | if (gi_ptr->merge[ix]) | |
110 | n_ctrs++; | |
111 | ||
112 | len = sizeof (*fn_buffer) + sizeof (fn_buffer->info.ctrs[0]) * n_ctrs; | |
67745126 | 113 | fn_buffer = (struct gcov_fn_buffer *) xmalloc (len); |
ded3d3f8 | 114 | |
115 | if (!fn_buffer) | |
116 | goto fail; | |
117 | ||
118 | fn_buffer->next = 0; | |
119 | fn_buffer->fn_ix = fn_ix; | |
120 | fn_buffer->info.ident = gcov_read_unsigned (); | |
121 | fn_buffer->info.lineno_checksum = gcov_read_unsigned (); | |
122 | fn_buffer->info.cfg_checksum = gcov_read_unsigned (); | |
123 | ||
124 | for (n_ctrs = ix = 0; ix != GCOV_COUNTERS; ix++) | |
125 | { | |
126 | gcov_unsigned_t length; | |
127 | gcov_type *values; | |
128 | ||
129 | if (!gi_ptr->merge[ix]) | |
130 | continue; | |
131 | ||
132 | if (gcov_read_unsigned () != GCOV_TAG_FOR_COUNTER (ix)) | |
133 | { | |
134 | len = 0; | |
135 | goto fail; | |
136 | } | |
137 | ||
138 | length = GCOV_TAG_COUNTER_NUM (gcov_read_unsigned ()); | |
139 | len = length * sizeof (gcov_type); | |
67745126 | 140 | values = (gcov_type *) xmalloc (len); |
ded3d3f8 | 141 | if (!values) |
142 | goto fail; | |
143 | ||
144 | fn_buffer->info.ctrs[n_ctrs].num = length; | |
145 | fn_buffer->info.ctrs[n_ctrs].values = values; | |
146 | ||
147 | while (length--) | |
148 | *values++ = gcov_read_counter (); | |
149 | n_ctrs++; | |
150 | } | |
151 | ||
152 | *end_ptr = fn_buffer; | |
153 | return &fn_buffer->next; | |
154 | ||
155 | fail: | |
085a4ac7 | 156 | gcov_error (GCOV_PROF_PREFIX "Function %u %s %u \n", filename, fn_ix, |
ded3d3f8 | 157 | len ? "cannot allocate" : "counter mismatch", len ? len : ix); |
158 | ||
159 | return (struct gcov_fn_buffer **)free_fn_data (gi_ptr, fn_buffer, ix); | |
160 | } | |
161 | ||
02638fde | 162 | /* Convert VERSION into a string description and return the it. |
163 | BUFFER is used for storage of the string. The code should be | |
164 | aligned wit gcov-iov.c. */ | |
165 | ||
166 | static char * | |
167 | gcov_version_string (char *buffer, char version[4]) | |
168 | { | |
169 | if (version[0] < 'A' || version[0] > 'Z' | |
170 | || version[1] < '0' || version[1] > '9' | |
171 | || version[2] < '0' || version[2] > '9') | |
172 | sprintf (buffer, "(unknown)"); | |
173 | else | |
174 | { | |
175 | unsigned major = 10 * (version[0] - 'A') + (version[1] - '0'); | |
176 | unsigned minor = version[2] - '0'; | |
177 | sprintf (buffer, "%u.%u (%s)", major, minor, | |
178 | version[3] == '*' ? "release" : "experimental"); | |
179 | } | |
180 | return buffer; | |
181 | } | |
182 | ||
ded3d3f8 | 183 | /* Check if VERSION of the info block PTR matches libgcov one. |
184 | Return 1 on success, or zero in case of versions mismatch. | |
185 | If FILENAME is not NULL, its value used for reporting purposes | |
186 | instead of value from the info block. */ | |
187 | ||
188 | static int | |
189 | gcov_version (struct gcov_info *ptr, gcov_unsigned_t version, | |
190 | const char *filename) | |
191 | { | |
192 | if (version != GCOV_VERSION) | |
193 | { | |
194 | char v[4], e[4]; | |
02638fde | 195 | char version_string[128], expected_string[128]; |
ded3d3f8 | 196 | |
197 | GCOV_UNSIGNED2STRING (v, version); | |
198 | GCOV_UNSIGNED2STRING (e, GCOV_VERSION); | |
199 | ||
085a4ac7 | 200 | gcov_error (GCOV_PROF_PREFIX "Version mismatch - expected %s (%.4s) " |
02638fde | 201 | "got %s (%.4s)\n", |
202 | filename? filename : ptr->filename, | |
203 | gcov_version_string (expected_string, e), e, | |
204 | gcov_version_string (version_string, v), v); | |
ded3d3f8 | 205 | return 0; |
206 | } | |
207 | return 1; | |
208 | } | |
209 | ||
ded3d3f8 | 210 | /* buffer for the fn_data from another program. */ |
211 | static struct gcov_fn_buffer *fn_buffer; | |
ded3d3f8 | 212 | |
ded3d3f8 | 213 | /* Including system dependent components. */ |
214 | #include "libgcov-driver-system.c" | |
215 | ||
216 | /* This function merges counters in GI_PTR to an existing gcda file. | |
217 | Return 0 on success. | |
218 | Return -1 on error. In this case, caller will goto read_fatal. */ | |
219 | ||
220 | static int | |
1186f97a | 221 | merge_one_data (const char *filename, |
222 | struct gcov_info *gi_ptr, | |
56621355 | 223 | struct gcov_summary *summary) |
ded3d3f8 | 224 | { |
225 | gcov_unsigned_t tag, length; | |
226 | unsigned t_ix; | |
56621355 | 227 | int f_ix = -1; |
ded3d3f8 | 228 | int error = 0; |
229 | struct gcov_fn_buffer **fn_tail = &fn_buffer; | |
ded3d3f8 | 230 | |
231 | length = gcov_read_unsigned (); | |
6401b74d | 232 | if (!gcov_version (gi_ptr, length, filename)) |
ded3d3f8 | 233 | return -1; |
234 | ||
235 | length = gcov_read_unsigned (); | |
236 | if (length != gi_ptr->stamp) | |
5522d934 | 237 | { |
238 | /* Read from a different compilation. Overwrite the file. */ | |
085a4ac7 | 239 | gcov_error (GCOV_PROF_PREFIX "overwriting an existing profile data " |
5522d934 | 240 | "with a different timestamp\n", filename); |
241 | return 0; | |
242 | } | |
ded3d3f8 | 243 | |
56621355 | 244 | tag = gcov_read_unsigned (); |
245 | if (tag != GCOV_TAG_OBJECT_SUMMARY) | |
246 | goto read_mismatch; | |
247 | length = gcov_read_unsigned (); | |
248 | gcc_assert (length > 0); | |
249 | gcov_read_summary (summary); | |
ded3d3f8 | 250 | |
56621355 | 251 | tag = gcov_read_unsigned (); |
ded3d3f8 | 252 | /* Merge execution counts for each function. */ |
253 | for (f_ix = 0; (unsigned)f_ix != gi_ptr->n_functions; | |
254 | f_ix++, tag = gcov_read_unsigned ()) | |
255 | { | |
256 | const struct gcov_ctr_info *ci_ptr; | |
257 | const struct gcov_fn_info *gfi_ptr = gi_ptr->functions[f_ix]; | |
258 | ||
259 | if (tag != GCOV_TAG_FUNCTION) | |
260 | goto read_mismatch; | |
261 | ||
262 | length = gcov_read_unsigned (); | |
263 | if (!length) | |
264 | /* This function did not appear in the other program. | |
265 | We have nothing to merge. */ | |
266 | continue; | |
267 | ||
268 | if (length != GCOV_TAG_FUNCTION_LENGTH) | |
269 | goto read_mismatch; | |
270 | ||
271 | if (!gfi_ptr || gfi_ptr->key != gi_ptr) | |
272 | { | |
273 | /* This function appears in the other program. We | |
274 | need to buffer the information in order to write | |
275 | it back out -- we'll be inserting data before | |
276 | this point, so cannot simply keep the data in the | |
277 | file. */ | |
6401b74d | 278 | fn_tail = buffer_fn_data (filename, gi_ptr, fn_tail, f_ix); |
ded3d3f8 | 279 | if (!fn_tail) |
280 | goto read_mismatch; | |
281 | continue; | |
282 | } | |
283 | ||
284 | length = gcov_read_unsigned (); | |
285 | if (length != gfi_ptr->ident) | |
286 | goto read_mismatch; | |
287 | ||
288 | length = gcov_read_unsigned (); | |
289 | if (length != gfi_ptr->lineno_checksum) | |
290 | goto read_mismatch; | |
291 | ||
292 | length = gcov_read_unsigned (); | |
293 | if (length != gfi_ptr->cfg_checksum) | |
294 | goto read_mismatch; | |
295 | ||
296 | ci_ptr = gfi_ptr->ctrs; | |
297 | for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++) | |
298 | { | |
299 | gcov_merge_fn merge = gi_ptr->merge[t_ix]; | |
300 | ||
301 | if (!merge) | |
302 | continue; | |
303 | ||
304 | tag = gcov_read_unsigned (); | |
305 | length = gcov_read_unsigned (); | |
306 | if (tag != GCOV_TAG_FOR_COUNTER (t_ix) | |
307 | || length != GCOV_TAG_COUNTER_LENGTH (ci_ptr->num)) | |
308 | goto read_mismatch; | |
309 | (*merge) (ci_ptr->values, ci_ptr->num); | |
310 | ci_ptr++; | |
311 | } | |
312 | if ((error = gcov_is_error ())) | |
313 | goto read_error; | |
314 | } | |
315 | ||
316 | if (tag) | |
317 | { | |
318 | read_mismatch:; | |
085a4ac7 | 319 | gcov_error (GCOV_PROF_PREFIX "Merge mismatch for %s %u\n", |
6401b74d | 320 | filename, f_ix >= 0 ? "function" : "summary", |
ded3d3f8 | 321 | f_ix < 0 ? -1 - f_ix : f_ix); |
322 | return -1; | |
323 | } | |
324 | return 0; | |
325 | ||
326 | read_error: | |
085a4ac7 | 327 | gcov_error (GCOV_PROF_PREFIX "%s merging\n", filename, |
ded3d3f8 | 328 | error < 0 ? "Overflow": "Error"); |
329 | return -1; | |
330 | } | |
331 | ||
332 | /* Write counters in GI_PTR and the summary in PRG to a gcda file. In | |
333 | the case of appending to an existing file, SUMMARY_POS will be non-zero. | |
334 | We will write the file starting from SUMMAY_POS. */ | |
335 | ||
336 | static void | |
1186f97a | 337 | write_one_data (const struct gcov_info *gi_ptr, |
56621355 | 338 | const struct gcov_summary *prg_p) |
ded3d3f8 | 339 | { |
340 | unsigned f_ix; | |
ded3d3f8 | 341 | |
56621355 | 342 | gcov_write_tag_length (GCOV_DATA_MAGIC, GCOV_VERSION); |
343 | gcov_write_unsigned (gi_ptr->stamp); | |
ded3d3f8 | 344 | |
345 | /* Generate whole program statistics. */ | |
56621355 | 346 | gcov_write_summary (GCOV_TAG_OBJECT_SUMMARY, prg_p); |
ded3d3f8 | 347 | |
348 | /* Write execution counts for each function. */ | |
349 | for (f_ix = 0; f_ix != gi_ptr->n_functions; f_ix++) | |
350 | { | |
351 | unsigned buffered = 0; | |
352 | const struct gcov_fn_info *gfi_ptr; | |
353 | const struct gcov_ctr_info *ci_ptr; | |
354 | gcov_unsigned_t length; | |
355 | unsigned t_ix; | |
356 | ||
357 | if (fn_buffer && fn_buffer->fn_ix == f_ix) | |
358 | { | |
359 | /* Buffered data from another program. */ | |
360 | buffered = 1; | |
361 | gfi_ptr = &fn_buffer->info; | |
362 | length = GCOV_TAG_FUNCTION_LENGTH; | |
363 | } | |
364 | else | |
365 | { | |
366 | gfi_ptr = gi_ptr->functions[f_ix]; | |
367 | if (gfi_ptr && gfi_ptr->key == gi_ptr) | |
368 | length = GCOV_TAG_FUNCTION_LENGTH; | |
369 | else | |
370 | length = 0; | |
371 | } | |
372 | ||
373 | gcov_write_tag_length (GCOV_TAG_FUNCTION, length); | |
374 | if (!length) | |
375 | continue; | |
376 | ||
377 | gcov_write_unsigned (gfi_ptr->ident); | |
378 | gcov_write_unsigned (gfi_ptr->lineno_checksum); | |
379 | gcov_write_unsigned (gfi_ptr->cfg_checksum); | |
380 | ||
381 | ci_ptr = gfi_ptr->ctrs; | |
382 | for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++) | |
383 | { | |
384 | gcov_unsigned_t n_counts; | |
385 | gcov_type *c_ptr; | |
386 | ||
387 | if (!gi_ptr->merge[t_ix]) | |
388 | continue; | |
389 | ||
390 | n_counts = ci_ptr->num; | |
391 | gcov_write_tag_length (GCOV_TAG_FOR_COUNTER (t_ix), | |
392 | GCOV_TAG_COUNTER_LENGTH (n_counts)); | |
393 | c_ptr = ci_ptr->values; | |
394 | while (n_counts--) | |
395 | gcov_write_counter (*c_ptr++); | |
396 | ci_ptr++; | |
397 | } | |
398 | if (buffered) | |
399 | fn_buffer = free_fn_data (gi_ptr, fn_buffer, GCOV_COUNTERS); | |
400 | } | |
401 | ||
402 | gcov_write_unsigned (0); | |
403 | } | |
404 | ||
56621355 | 405 | /* Helper function for merging summary. */ |
ded3d3f8 | 406 | |
56621355 | 407 | static void |
408 | merge_summary (int run_counted, struct gcov_summary *summary, | |
409 | gcov_type run_max) | |
ded3d3f8 | 410 | { |
5860b185 | 411 | if (!run_counted) |
5860b185 | 412 | { |
56621355 | 413 | summary->runs++; |
414 | summary->sum_max += run_max; | |
ded3d3f8 | 415 | } |
ded3d3f8 | 416 | } |
417 | ||
418 | /* Dump the coverage counts for one gcov_info object. We merge with existing | |
419 | counts when possible, to avoid growing the .da files ad infinitum. We use | |
420 | this program's checksum to make sure we only accumulate whole program | |
421 | statistics to the correct summary. An object file might be embedded | |
422 | in two separate programs, and we must keep the two program | |
423 | summaries separate. */ | |
424 | ||
425 | static void | |
1186f97a | 426 | dump_one_gcov (struct gcov_info *gi_ptr, struct gcov_filename *gf, |
56621355 | 427 | unsigned run_counted, gcov_type run_max) |
ded3d3f8 | 428 | { |
56621355 | 429 | struct gcov_summary summary = {}; |
ded3d3f8 | 430 | int error; |
431 | gcov_unsigned_t tag; | |
ded3d3f8 | 432 | |
433 | fn_buffer = 0; | |
ded3d3f8 | 434 | |
435 | error = gcov_exit_open_gcda_file (gi_ptr, gf); | |
436 | if (error == -1) | |
437 | return; | |
438 | ||
439 | tag = gcov_read_unsigned (); | |
440 | if (tag) | |
441 | { | |
442 | /* Merge data from file. */ | |
443 | if (tag != GCOV_DATA_MAGIC) | |
444 | { | |
085a4ac7 | 445 | gcov_error (GCOV_PROF_PREFIX "Not a gcov data file\n", |
446 | gf->filename); | |
ded3d3f8 | 447 | goto read_fatal; |
448 | } | |
56621355 | 449 | error = merge_one_data (gf->filename, gi_ptr, &summary); |
ded3d3f8 | 450 | if (error == -1) |
451 | goto read_fatal; | |
452 | } | |
453 | ||
454 | gcov_rewrite (); | |
455 | ||
56621355 | 456 | merge_summary (run_counted, &summary, run_max); |
ded3d3f8 | 457 | |
56621355 | 458 | write_one_data (gi_ptr, &summary); |
ded3d3f8 | 459 | /* fall through */ |
460 | ||
461 | read_fatal:; | |
462 | while (fn_buffer) | |
463 | fn_buffer = free_fn_data (gi_ptr, fn_buffer, GCOV_COUNTERS); | |
464 | ||
465 | if ((error = gcov_close ())) | |
466 | gcov_error (error < 0 ? | |
085a4ac7 | 467 | GCOV_PROF_PREFIX "Overflow writing\n" : |
468 | GCOV_PROF_PREFIX "Error writing\n", | |
6401b74d | 469 | gf->filename); |
ded3d3f8 | 470 | } |
471 | ||
472 | ||
473 | /* Dump all the coverage counts for the program. It first computes program | |
474 | summary and then traverses gcov_list list and dumps the gcov_info | |
475 | objects one by one. */ | |
476 | ||
859fa1a9 | 477 | #if !IN_GCOV_TOOL |
478 | static | |
479 | #endif | |
480 | void | |
1186f97a | 481 | gcov_do_dump (struct gcov_info *list, int run_counted) |
ded3d3f8 | 482 | { |
483 | struct gcov_info *gi_ptr; | |
6401b74d | 484 | struct gcov_filename gf; |
ded3d3f8 | 485 | |
56621355 | 486 | /* Compute run_max of this program run. */ |
487 | gcov_type run_max = 0; | |
488 | for (gi_ptr = list; gi_ptr; gi_ptr = gi_ptr->next) | |
489 | for (unsigned f_ix = 0; (unsigned)f_ix != gi_ptr->n_functions; f_ix++) | |
490 | { | |
491 | const struct gcov_ctr_info *cinfo | |
492 | = &gi_ptr->functions[f_ix]->ctrs[GCOV_COUNTER_ARCS]; | |
493 | ||
494 | for (unsigned i = 0; i < cinfo->num; i++) | |
495 | if (run_max < cinfo->values[i]) | |
496 | run_max = cinfo->values[i]; | |
497 | } | |
ded3d3f8 | 498 | |
499 | allocate_filename_struct (&gf); | |
500 | ||
501 | /* Now merge each file. */ | |
1186f97a | 502 | for (gi_ptr = list; gi_ptr; gi_ptr = gi_ptr->next) |
5b24ad4b | 503 | { |
56621355 | 504 | dump_one_gcov (gi_ptr, &gf, run_counted, run_max); |
5b24ad4b | 505 | free (gf.filename); |
506 | } | |
ded3d3f8 | 507 | |
5b24ad4b | 508 | free (gf.prefix); |
ded3d3f8 | 509 | } |
510 | ||
6db59335 | 511 | #if IN_GCOV_TOOL |
512 | const char * | |
513 | __attribute__ ((unused)) | |
514 | gcov_get_filename (struct gcov_info *list) | |
515 | { | |
516 | return list->filename; | |
517 | } | |
518 | #endif | |
519 | ||
cb3ea3de | 520 | #if !IN_GCOV_TOOL |
1186f97a | 521 | void |
859fa1a9 | 522 | __gcov_dump_one (struct gcov_root *root) |
1186f97a | 523 | { |
859fa1a9 | 524 | if (root->dumped) |
1186f97a | 525 | return; |
526 | ||
859fa1a9 | 527 | gcov_do_dump (root->list, root->run_counted); |
1186f97a | 528 | |
859fa1a9 | 529 | root->dumped = 1; |
530 | root->run_counted = 1; | |
1186f97a | 531 | } |
532 | ||
bc587267 | 533 | /* Per-dynamic-object gcov state. */ |
859fa1a9 | 534 | struct gcov_root __gcov_root; |
ded3d3f8 | 535 | |
bc587267 | 536 | /* Exactly one of these will be live in the process image. */ |
537 | struct gcov_master __gcov_master = | |
538 | {GCOV_VERSION, 0}; | |
539 | ||
db46bcd3 | 540 | void |
541 | __gcov_exit (void) | |
ded3d3f8 | 542 | { |
859fa1a9 | 543 | __gcov_dump_one (&__gcov_root); |
bc587267 | 544 | if (__gcov_root.next) |
545 | __gcov_root.next->prev = __gcov_root.prev; | |
546 | if (__gcov_root.prev) | |
547 | __gcov_root.prev->next = __gcov_root.next; | |
548 | else | |
549 | __gcov_master.root = __gcov_root.next; | |
3237fc56 | 550 | |
551 | gcov_error_exit (); | |
ded3d3f8 | 552 | } |
553 | ||
554 | /* Add a new object file onto the bb chain. Invoked automatically | |
555 | when running an object file's global ctors. */ | |
556 | ||
557 | void | |
558 | __gcov_init (struct gcov_info *info) | |
559 | { | |
560 | if (!info->version || !info->n_functions) | |
561 | return; | |
562 | if (gcov_version (info, info->version, 0)) | |
563 | { | |
859fa1a9 | 564 | if (!__gcov_root.list) |
bc587267 | 565 | { |
566 | /* Add to master list and at exit function. */ | |
567 | if (gcov_version (NULL, __gcov_master.version, "<master>")) | |
568 | { | |
569 | __gcov_root.next = __gcov_master.root; | |
570 | if (__gcov_master.root) | |
571 | __gcov_master.root->prev = &__gcov_root; | |
572 | __gcov_master.root = &__gcov_root; | |
573 | } | |
bc587267 | 574 | } |
ded3d3f8 | 575 | |
859fa1a9 | 576 | info->next = __gcov_root.list; |
577 | __gcov_root.list = info; | |
ded3d3f8 | 578 | } |
ded3d3f8 | 579 | } |
cb3ea3de | 580 | #endif /* !IN_GCOV_TOOL */ |
ded3d3f8 | 581 | #endif /* L_gcov */ |
582 | #endif /* inhibit_libc */ |