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Commit | Line | Data |
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d6d3f033 RX |
1 | /* Routines required for instrumenting a program. */ |
2 | /* Compile this one with gcc. */ | |
8d9254fc | 3 | /* Copyright (C) 1989-2020 Free Software Foundation, Inc. |
d6d3f033 RX |
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 | ||
40d6b753 | 26 | #include "libgcov.h" |
512cc015 | 27 | #include "gcov-io.h" |
d6d3f033 RX |
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 | |
e3f0315f | 46 | |
8aa5bdd6 | 47 | /* A utility function for outputting errors. */ |
e3f0315f TJ |
48 | static int gcov_error (const char *, ...); |
49 | ||
8aa5bdd6 AC |
50 | #if !IN_GCOV_TOOL |
51 | static void gcov_error_exit (void); | |
52 | #endif | |
53 | ||
d6d3f033 RX |
54 | #include "gcov-io.c" |
55 | ||
d273c40a ML |
56 | #define GCOV_PROF_PREFIX "libgcov profiling error:%s:" |
57 | ||
d6d3f033 RX |
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 | ||
6dc33097 NS |
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 */ | |
6dc33097 | 78 | int strip; /* leading chars to strip from filename */ |
6c086e8c | 79 | char *prefix; /* prefix string */ |
6dc33097 NS |
80 | }; |
81 | ||
d6d3f033 RX |
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; | |
40d6b753 | 113 | fn_buffer = (struct gcov_fn_buffer *) xmalloc (len); |
d6d3f033 RX |
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); | |
40d6b753 | 140 | values = (gcov_type *) xmalloc (len); |
d6d3f033 RX |
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: | |
d273c40a | 156 | gcov_error (GCOV_PROF_PREFIX "Function %u %s %u \n", filename, fn_ix, |
d6d3f033 RX |
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 | ||
be9d9fdb ML |
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 | ||
d6d3f033 RX |
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]; | |
be9d9fdb | 195 | char version_string[128], expected_string[128]; |
d6d3f033 RX |
196 | |
197 | GCOV_UNSIGNED2STRING (v, version); | |
198 | GCOV_UNSIGNED2STRING (e, GCOV_VERSION); | |
199 | ||
d273c40a | 200 | gcov_error (GCOV_PROF_PREFIX "Version mismatch - expected %s (%.4s) " |
be9d9fdb ML |
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); | |
d6d3f033 RX |
205 | return 0; |
206 | } | |
207 | return 1; | |
208 | } | |
209 | ||
d6d3f033 RX |
210 | /* buffer for the fn_data from another program. */ |
211 | static struct gcov_fn_buffer *fn_buffer; | |
d6d3f033 | 212 | |
d6d3f033 RX |
213 | /* Including system dependent components. */ |
214 | #include "libgcov-driver-system.c" | |
215 | ||
5f32f9cf ML |
216 | /* Prune TOP N value COUNTERS. It's needed in order to preserve |
217 | reproducibility of builds. */ | |
218 | ||
219 | static void | |
220 | prune_topn_counter (gcov_type *counters, gcov_type all) | |
221 | { | |
5f32f9cf | 222 | for (unsigned i = 0; i < GCOV_TOPN_VALUES; i++) |
e9ee848d ML |
223 | if (counters[2 * i + 1] < all) |
224 | { | |
225 | counters[2 * i] = 0; | |
226 | counters[2 * i + 1] = 0; | |
227 | } | |
5f32f9cf ML |
228 | } |
229 | ||
230 | /* Prune counters so that they are ready to store or merge. */ | |
231 | ||
232 | static void | |
233 | prune_counters (struct gcov_info *gi) | |
234 | { | |
235 | for (unsigned i = 0; i < gi->n_functions; i++) | |
236 | { | |
237 | const struct gcov_fn_info *gfi = gi->functions[i]; | |
238 | const struct gcov_ctr_info *ci = gfi->ctrs; | |
239 | ||
240 | for (unsigned j = 0; j < GCOV_COUNTERS; j++) | |
241 | { | |
242 | if (gi->merge[j] == NULL) | |
243 | continue; | |
244 | ||
245 | if (gi->merge[j] == __gcov_merge_topn) | |
246 | { | |
247 | gcc_assert (!(ci->num % GCOV_TOPN_VALUES_COUNTERS)); | |
248 | for (unsigned k = 0; k < (ci->num / GCOV_TOPN_VALUES_COUNTERS); | |
249 | k++) | |
250 | { | |
251 | gcov_type *counters | |
252 | = ci->values + (k * GCOV_TOPN_VALUES_COUNTERS); | |
253 | prune_topn_counter (counters + 1, *counters); | |
254 | } | |
255 | } | |
256 | ci++; | |
257 | } | |
258 | } | |
259 | } | |
260 | ||
d6d3f033 RX |
261 | /* This function merges counters in GI_PTR to an existing gcda file. |
262 | Return 0 on success. | |
263 | Return -1 on error. In this case, caller will goto read_fatal. */ | |
264 | ||
265 | static int | |
19926161 NS |
266 | merge_one_data (const char *filename, |
267 | struct gcov_info *gi_ptr, | |
512cc015 | 268 | struct gcov_summary *summary) |
d6d3f033 RX |
269 | { |
270 | gcov_unsigned_t tag, length; | |
271 | unsigned t_ix; | |
512cc015 | 272 | int f_ix = -1; |
d6d3f033 RX |
273 | int error = 0; |
274 | struct gcov_fn_buffer **fn_tail = &fn_buffer; | |
d6d3f033 RX |
275 | |
276 | length = gcov_read_unsigned (); | |
6dc33097 | 277 | if (!gcov_version (gi_ptr, length, filename)) |
d6d3f033 RX |
278 | return -1; |
279 | ||
280 | length = gcov_read_unsigned (); | |
281 | if (length != gi_ptr->stamp) | |
0e8f29da ML |
282 | { |
283 | /* Read from a different compilation. Overwrite the file. */ | |
d273c40a | 284 | gcov_error (GCOV_PROF_PREFIX "overwriting an existing profile data " |
0e8f29da ML |
285 | "with a different timestamp\n", filename); |
286 | return 0; | |
287 | } | |
d6d3f033 | 288 | |
512cc015 ML |
289 | tag = gcov_read_unsigned (); |
290 | if (tag != GCOV_TAG_OBJECT_SUMMARY) | |
291 | goto read_mismatch; | |
292 | length = gcov_read_unsigned (); | |
293 | gcc_assert (length > 0); | |
294 | gcov_read_summary (summary); | |
d6d3f033 | 295 | |
512cc015 | 296 | tag = gcov_read_unsigned (); |
d6d3f033 RX |
297 | /* Merge execution counts for each function. */ |
298 | for (f_ix = 0; (unsigned)f_ix != gi_ptr->n_functions; | |
299 | f_ix++, tag = gcov_read_unsigned ()) | |
300 | { | |
301 | const struct gcov_ctr_info *ci_ptr; | |
302 | const struct gcov_fn_info *gfi_ptr = gi_ptr->functions[f_ix]; | |
303 | ||
304 | if (tag != GCOV_TAG_FUNCTION) | |
305 | goto read_mismatch; | |
306 | ||
307 | length = gcov_read_unsigned (); | |
308 | if (!length) | |
309 | /* This function did not appear in the other program. | |
310 | We have nothing to merge. */ | |
311 | continue; | |
312 | ||
313 | if (length != GCOV_TAG_FUNCTION_LENGTH) | |
314 | goto read_mismatch; | |
315 | ||
316 | if (!gfi_ptr || gfi_ptr->key != gi_ptr) | |
317 | { | |
318 | /* This function appears in the other program. We | |
319 | need to buffer the information in order to write | |
320 | it back out -- we'll be inserting data before | |
321 | this point, so cannot simply keep the data in the | |
322 | file. */ | |
6dc33097 | 323 | fn_tail = buffer_fn_data (filename, gi_ptr, fn_tail, f_ix); |
d6d3f033 RX |
324 | if (!fn_tail) |
325 | goto read_mismatch; | |
326 | continue; | |
327 | } | |
328 | ||
329 | length = gcov_read_unsigned (); | |
330 | if (length != gfi_ptr->ident) | |
331 | goto read_mismatch; | |
332 | ||
333 | length = gcov_read_unsigned (); | |
334 | if (length != gfi_ptr->lineno_checksum) | |
335 | goto read_mismatch; | |
336 | ||
337 | length = gcov_read_unsigned (); | |
338 | if (length != gfi_ptr->cfg_checksum) | |
339 | goto read_mismatch; | |
340 | ||
341 | ci_ptr = gfi_ptr->ctrs; | |
342 | for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++) | |
343 | { | |
344 | gcov_merge_fn merge = gi_ptr->merge[t_ix]; | |
345 | ||
346 | if (!merge) | |
347 | continue; | |
348 | ||
349 | tag = gcov_read_unsigned (); | |
350 | length = gcov_read_unsigned (); | |
351 | if (tag != GCOV_TAG_FOR_COUNTER (t_ix) | |
352 | || length != GCOV_TAG_COUNTER_LENGTH (ci_ptr->num)) | |
353 | goto read_mismatch; | |
354 | (*merge) (ci_ptr->values, ci_ptr->num); | |
355 | ci_ptr++; | |
356 | } | |
357 | if ((error = gcov_is_error ())) | |
358 | goto read_error; | |
359 | } | |
360 | ||
361 | if (tag) | |
362 | { | |
363 | read_mismatch:; | |
d273c40a | 364 | gcov_error (GCOV_PROF_PREFIX "Merge mismatch for %s %u\n", |
6dc33097 | 365 | filename, f_ix >= 0 ? "function" : "summary", |
d6d3f033 RX |
366 | f_ix < 0 ? -1 - f_ix : f_ix); |
367 | return -1; | |
368 | } | |
369 | return 0; | |
370 | ||
371 | read_error: | |
d273c40a | 372 | gcov_error (GCOV_PROF_PREFIX "%s merging\n", filename, |
d6d3f033 RX |
373 | error < 0 ? "Overflow": "Error"); |
374 | return -1; | |
375 | } | |
376 | ||
377 | /* Write counters in GI_PTR and the summary in PRG to a gcda file. In | |
378 | the case of appending to an existing file, SUMMARY_POS will be non-zero. | |
379 | We will write the file starting from SUMMAY_POS. */ | |
380 | ||
381 | static void | |
19926161 | 382 | write_one_data (const struct gcov_info *gi_ptr, |
512cc015 | 383 | const struct gcov_summary *prg_p) |
d6d3f033 RX |
384 | { |
385 | unsigned f_ix; | |
d6d3f033 | 386 | |
512cc015 ML |
387 | gcov_write_tag_length (GCOV_DATA_MAGIC, GCOV_VERSION); |
388 | gcov_write_unsigned (gi_ptr->stamp); | |
d6d3f033 RX |
389 | |
390 | /* Generate whole program statistics. */ | |
512cc015 | 391 | gcov_write_summary (GCOV_TAG_OBJECT_SUMMARY, prg_p); |
d6d3f033 RX |
392 | |
393 | /* Write execution counts for each function. */ | |
394 | for (f_ix = 0; f_ix != gi_ptr->n_functions; f_ix++) | |
395 | { | |
396 | unsigned buffered = 0; | |
397 | const struct gcov_fn_info *gfi_ptr; | |
398 | const struct gcov_ctr_info *ci_ptr; | |
399 | gcov_unsigned_t length; | |
400 | unsigned t_ix; | |
401 | ||
402 | if (fn_buffer && fn_buffer->fn_ix == f_ix) | |
403 | { | |
404 | /* Buffered data from another program. */ | |
405 | buffered = 1; | |
406 | gfi_ptr = &fn_buffer->info; | |
407 | length = GCOV_TAG_FUNCTION_LENGTH; | |
408 | } | |
409 | else | |
410 | { | |
411 | gfi_ptr = gi_ptr->functions[f_ix]; | |
412 | if (gfi_ptr && gfi_ptr->key == gi_ptr) | |
413 | length = GCOV_TAG_FUNCTION_LENGTH; | |
414 | else | |
415 | length = 0; | |
416 | } | |
417 | ||
418 | gcov_write_tag_length (GCOV_TAG_FUNCTION, length); | |
419 | if (!length) | |
420 | continue; | |
421 | ||
422 | gcov_write_unsigned (gfi_ptr->ident); | |
423 | gcov_write_unsigned (gfi_ptr->lineno_checksum); | |
424 | gcov_write_unsigned (gfi_ptr->cfg_checksum); | |
425 | ||
426 | ci_ptr = gfi_ptr->ctrs; | |
427 | for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++) | |
428 | { | |
429 | gcov_unsigned_t n_counts; | |
430 | gcov_type *c_ptr; | |
431 | ||
432 | if (!gi_ptr->merge[t_ix]) | |
433 | continue; | |
434 | ||
435 | n_counts = ci_ptr->num; | |
436 | gcov_write_tag_length (GCOV_TAG_FOR_COUNTER (t_ix), | |
437 | GCOV_TAG_COUNTER_LENGTH (n_counts)); | |
438 | c_ptr = ci_ptr->values; | |
439 | while (n_counts--) | |
440 | gcov_write_counter (*c_ptr++); | |
441 | ci_ptr++; | |
442 | } | |
443 | if (buffered) | |
444 | fn_buffer = free_fn_data (gi_ptr, fn_buffer, GCOV_COUNTERS); | |
445 | } | |
446 | ||
447 | gcov_write_unsigned (0); | |
448 | } | |
449 | ||
512cc015 | 450 | /* Helper function for merging summary. */ |
d6d3f033 | 451 | |
512cc015 ML |
452 | static void |
453 | merge_summary (int run_counted, struct gcov_summary *summary, | |
454 | gcov_type run_max) | |
d6d3f033 | 455 | { |
7f3577f5 | 456 | if (!run_counted) |
7f3577f5 | 457 | { |
512cc015 ML |
458 | summary->runs++; |
459 | summary->sum_max += run_max; | |
d6d3f033 | 460 | } |
d6d3f033 RX |
461 | } |
462 | ||
463 | /* Dump the coverage counts for one gcov_info object. We merge with existing | |
464 | counts when possible, to avoid growing the .da files ad infinitum. We use | |
465 | this program's checksum to make sure we only accumulate whole program | |
466 | statistics to the correct summary. An object file might be embedded | |
467 | in two separate programs, and we must keep the two program | |
468 | summaries separate. */ | |
469 | ||
470 | static void | |
19926161 | 471 | dump_one_gcov (struct gcov_info *gi_ptr, struct gcov_filename *gf, |
512cc015 | 472 | unsigned run_counted, gcov_type run_max) |
d6d3f033 | 473 | { |
512cc015 | 474 | struct gcov_summary summary = {}; |
d6d3f033 RX |
475 | int error; |
476 | gcov_unsigned_t tag; | |
d6d3f033 | 477 | fn_buffer = 0; |
d6d3f033 | 478 | |
5f32f9cf ML |
479 | /* Prune current counters before we merge them. */ |
480 | prune_counters (gi_ptr); | |
481 | ||
d6d3f033 RX |
482 | error = gcov_exit_open_gcda_file (gi_ptr, gf); |
483 | if (error == -1) | |
484 | return; | |
485 | ||
486 | tag = gcov_read_unsigned (); | |
487 | if (tag) | |
488 | { | |
489 | /* Merge data from file. */ | |
490 | if (tag != GCOV_DATA_MAGIC) | |
491 | { | |
d273c40a ML |
492 | gcov_error (GCOV_PROF_PREFIX "Not a gcov data file\n", |
493 | gf->filename); | |
d6d3f033 RX |
494 | goto read_fatal; |
495 | } | |
512cc015 | 496 | error = merge_one_data (gf->filename, gi_ptr, &summary); |
d6d3f033 RX |
497 | if (error == -1) |
498 | goto read_fatal; | |
499 | } | |
500 | ||
501 | gcov_rewrite (); | |
502 | ||
512cc015 | 503 | merge_summary (run_counted, &summary, run_max); |
d6d3f033 | 504 | |
512cc015 | 505 | write_one_data (gi_ptr, &summary); |
d6d3f033 RX |
506 | /* fall through */ |
507 | ||
508 | read_fatal:; | |
509 | while (fn_buffer) | |
510 | fn_buffer = free_fn_data (gi_ptr, fn_buffer, GCOV_COUNTERS); | |
511 | ||
512 | if ((error = gcov_close ())) | |
513 | gcov_error (error < 0 ? | |
d273c40a ML |
514 | GCOV_PROF_PREFIX "Overflow writing\n" : |
515 | GCOV_PROF_PREFIX "Error writing\n", | |
6dc33097 | 516 | gf->filename); |
d6d3f033 RX |
517 | } |
518 | ||
519 | ||
520 | /* Dump all the coverage counts for the program. It first computes program | |
521 | summary and then traverses gcov_list list and dumps the gcov_info | |
522 | objects one by one. */ | |
523 | ||
4303c581 NS |
524 | #if !IN_GCOV_TOOL |
525 | static | |
526 | #endif | |
527 | void | |
19926161 | 528 | gcov_do_dump (struct gcov_info *list, int run_counted) |
d6d3f033 RX |
529 | { |
530 | struct gcov_info *gi_ptr; | |
6dc33097 | 531 | struct gcov_filename gf; |
d6d3f033 | 532 | |
512cc015 ML |
533 | /* Compute run_max of this program run. */ |
534 | gcov_type run_max = 0; | |
535 | for (gi_ptr = list; gi_ptr; gi_ptr = gi_ptr->next) | |
536 | for (unsigned f_ix = 0; (unsigned)f_ix != gi_ptr->n_functions; f_ix++) | |
537 | { | |
538 | const struct gcov_ctr_info *cinfo | |
539 | = &gi_ptr->functions[f_ix]->ctrs[GCOV_COUNTER_ARCS]; | |
540 | ||
541 | for (unsigned i = 0; i < cinfo->num; i++) | |
542 | if (run_max < cinfo->values[i]) | |
543 | run_max = cinfo->values[i]; | |
544 | } | |
d6d3f033 RX |
545 | |
546 | allocate_filename_struct (&gf); | |
547 | ||
548 | /* Now merge each file. */ | |
19926161 | 549 | for (gi_ptr = list; gi_ptr; gi_ptr = gi_ptr->next) |
6c086e8c | 550 | { |
512cc015 | 551 | dump_one_gcov (gi_ptr, &gf, run_counted, run_max); |
6c086e8c ML |
552 | free (gf.filename); |
553 | } | |
d6d3f033 | 554 | |
6c086e8c | 555 | free (gf.prefix); |
d6d3f033 RX |
556 | } |
557 | ||
63971184 ML |
558 | #if IN_GCOV_TOOL |
559 | const char * | |
560 | __attribute__ ((unused)) | |
561 | gcov_get_filename (struct gcov_info *list) | |
562 | { | |
563 | return list->filename; | |
564 | } | |
565 | #endif | |
566 | ||
b98a872b | 567 | #if !IN_GCOV_TOOL |
19926161 | 568 | void |
4303c581 | 569 | __gcov_dump_one (struct gcov_root *root) |
19926161 | 570 | { |
4303c581 | 571 | if (root->dumped) |
19926161 NS |
572 | return; |
573 | ||
4303c581 | 574 | gcov_do_dump (root->list, root->run_counted); |
19926161 | 575 | |
4303c581 NS |
576 | root->dumped = 1; |
577 | root->run_counted = 1; | |
19926161 NS |
578 | } |
579 | ||
cadb2b96 | 580 | /* Per-dynamic-object gcov state. */ |
4303c581 | 581 | struct gcov_root __gcov_root; |
d6d3f033 | 582 | |
cadb2b96 NS |
583 | /* Exactly one of these will be live in the process image. */ |
584 | struct gcov_master __gcov_master = | |
585 | {GCOV_VERSION, 0}; | |
586 | ||
8c9434c2 ML |
587 | void |
588 | __gcov_exit (void) | |
d6d3f033 | 589 | { |
4303c581 | 590 | __gcov_dump_one (&__gcov_root); |
cadb2b96 NS |
591 | if (__gcov_root.next) |
592 | __gcov_root.next->prev = __gcov_root.prev; | |
593 | if (__gcov_root.prev) | |
594 | __gcov_root.prev->next = __gcov_root.next; | |
595 | else | |
596 | __gcov_master.root = __gcov_root.next; | |
8aa5bdd6 AC |
597 | |
598 | gcov_error_exit (); | |
d6d3f033 RX |
599 | } |
600 | ||
601 | /* Add a new object file onto the bb chain. Invoked automatically | |
602 | when running an object file's global ctors. */ | |
603 | ||
604 | void | |
605 | __gcov_init (struct gcov_info *info) | |
606 | { | |
607 | if (!info->version || !info->n_functions) | |
608 | return; | |
609 | if (gcov_version (info, info->version, 0)) | |
610 | { | |
4303c581 | 611 | if (!__gcov_root.list) |
cadb2b96 NS |
612 | { |
613 | /* Add to master list and at exit function. */ | |
614 | if (gcov_version (NULL, __gcov_master.version, "<master>")) | |
615 | { | |
616 | __gcov_root.next = __gcov_master.root; | |
617 | if (__gcov_master.root) | |
618 | __gcov_master.root->prev = &__gcov_root; | |
619 | __gcov_master.root = &__gcov_root; | |
620 | } | |
cadb2b96 | 621 | } |
d6d3f033 | 622 | |
4303c581 NS |
623 | info->next = __gcov_root.list; |
624 | __gcov_root.list = info; | |
d6d3f033 | 625 | } |
d6d3f033 | 626 | } |
b98a872b | 627 | #endif /* !IN_GCOV_TOOL */ |
d6d3f033 RX |
628 | #endif /* L_gcov */ |
629 | #endif /* inhibit_libc */ |