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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. */ | |
7adcbafe | 3 | /* Copyright (C) 1989-2022 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 | 28 | |
9124bbe1 SH |
29 | /* Return 1, if all counter values are zero, otherwise 0. */ |
30 | ||
31 | static inline int | |
32 | are_all_counters_zero (const struct gcov_ctr_info *ci_ptr) | |
33 | { | |
34 | for (unsigned i = 0; i < ci_ptr->num; i++) | |
35 | if (ci_ptr->values[i] != 0) | |
36 | return 0; | |
37 | ||
38 | return 1; | |
39 | } | |
40 | ||
d6d3f033 RX |
41 | #if defined(inhibit_libc) |
42 | /* If libc and its header files are not available, provide dummy functions. */ | |
43 | ||
44 | #if defined(L_gcov) | |
45 | void __gcov_init (struct gcov_info *p __attribute__ ((unused))) {} | |
46 | #endif | |
47 | ||
48 | #else /* inhibit_libc */ | |
49 | ||
d6d3f033 RX |
50 | #if GCOV_LOCKED |
51 | #include <fcntl.h> | |
52 | #include <errno.h> | |
53 | #include <sys/stat.h> | |
9ec469f5 EB |
54 | #elif GCOV_LOCKED_WITH_LOCKING |
55 | #include <fcntl.h> | |
56 | #include <sys/locking.h> | |
57 | #include <sys/stat.h> | |
d6d3f033 RX |
58 | #endif |
59 | ||
6a8fc0c3 ML |
60 | #if HAVE_SYS_MMAN_H |
61 | #include <sys/mman.h> | |
62 | #endif | |
63 | ||
9124bbe1 SH |
64 | #endif /* inhibit_libc */ |
65 | ||
66 | #if defined(L_gcov) && !defined(inhibit_libc) | |
67 | #define NEED_L_GCOV | |
68 | #endif | |
69 | ||
70 | #if defined(L_gcov_info_to_gcda) && !IN_GCOV_TOOL | |
71 | #define NEED_L_GCOV_INFO_TO_GCDA | |
72 | #endif | |
e3f0315f | 73 | |
9124bbe1 | 74 | #ifdef NEED_L_GCOV |
8aa5bdd6 | 75 | /* A utility function for outputting errors. */ |
e3f0315f TJ |
76 | static int gcov_error (const char *, ...); |
77 | ||
8aa5bdd6 AC |
78 | #if !IN_GCOV_TOOL |
79 | static void gcov_error_exit (void); | |
80 | #endif | |
81 | ||
cd9912b5 | 82 | #include "gcov-io.cc" |
d6d3f033 | 83 | |
d273c40a ML |
84 | #define GCOV_PROF_PREFIX "libgcov profiling error:%s:" |
85 | ||
d6d3f033 RX |
86 | struct gcov_fn_buffer |
87 | { | |
88 | struct gcov_fn_buffer *next; | |
89 | unsigned fn_ix; | |
90 | struct gcov_fn_info info; | |
91 | /* note gcov_fn_info ends in a trailing array. */ | |
92 | }; | |
93 | ||
94 | struct gcov_summary_buffer | |
95 | { | |
96 | struct gcov_summary_buffer *next; | |
97 | struct gcov_summary summary; | |
98 | }; | |
99 | ||
6dc33097 NS |
100 | /* A struct that bundles all the related information about the |
101 | gcda filename. */ | |
102 | ||
103 | struct gcov_filename | |
104 | { | |
105 | char *filename; /* filename buffer */ | |
6dc33097 | 106 | int strip; /* leading chars to strip from filename */ |
6c086e8c | 107 | char *prefix; /* prefix string */ |
6dc33097 NS |
108 | }; |
109 | ||
d6d3f033 RX |
110 | static struct gcov_fn_buffer * |
111 | free_fn_data (const struct gcov_info *gi_ptr, struct gcov_fn_buffer *buffer, | |
112 | unsigned limit) | |
113 | { | |
114 | struct gcov_fn_buffer *next; | |
115 | unsigned ix, n_ctr = 0; | |
116 | ||
117 | if (!buffer) | |
118 | return 0; | |
119 | next = buffer->next; | |
120 | ||
121 | for (ix = 0; ix != limit; ix++) | |
122 | if (gi_ptr->merge[ix]) | |
123 | free (buffer->info.ctrs[n_ctr++].values); | |
124 | free (buffer); | |
125 | return next; | |
126 | } | |
127 | ||
128 | static struct gcov_fn_buffer ** | |
129 | buffer_fn_data (const char *filename, const struct gcov_info *gi_ptr, | |
130 | struct gcov_fn_buffer **end_ptr, unsigned fn_ix) | |
131 | { | |
132 | unsigned n_ctrs = 0, ix = 0; | |
133 | struct gcov_fn_buffer *fn_buffer; | |
134 | unsigned len; | |
135 | ||
136 | for (ix = GCOV_COUNTERS; ix--;) | |
137 | if (gi_ptr->merge[ix]) | |
138 | n_ctrs++; | |
139 | ||
140 | len = sizeof (*fn_buffer) + sizeof (fn_buffer->info.ctrs[0]) * n_ctrs; | |
40d6b753 | 141 | fn_buffer = (struct gcov_fn_buffer *) xmalloc (len); |
d6d3f033 RX |
142 | |
143 | if (!fn_buffer) | |
144 | goto fail; | |
145 | ||
146 | fn_buffer->next = 0; | |
147 | fn_buffer->fn_ix = fn_ix; | |
148 | fn_buffer->info.ident = gcov_read_unsigned (); | |
149 | fn_buffer->info.lineno_checksum = gcov_read_unsigned (); | |
150 | fn_buffer->info.cfg_checksum = gcov_read_unsigned (); | |
151 | ||
152 | for (n_ctrs = ix = 0; ix != GCOV_COUNTERS; ix++) | |
153 | { | |
154 | gcov_unsigned_t length; | |
155 | gcov_type *values; | |
156 | ||
157 | if (!gi_ptr->merge[ix]) | |
158 | continue; | |
159 | ||
160 | if (gcov_read_unsigned () != GCOV_TAG_FOR_COUNTER (ix)) | |
161 | { | |
162 | len = 0; | |
163 | goto fail; | |
164 | } | |
165 | ||
166 | length = GCOV_TAG_COUNTER_NUM (gcov_read_unsigned ()); | |
167 | len = length * sizeof (gcov_type); | |
40d6b753 | 168 | values = (gcov_type *) xmalloc (len); |
d6d3f033 RX |
169 | if (!values) |
170 | goto fail; | |
171 | ||
172 | fn_buffer->info.ctrs[n_ctrs].num = length; | |
173 | fn_buffer->info.ctrs[n_ctrs].values = values; | |
174 | ||
175 | while (length--) | |
176 | *values++ = gcov_read_counter (); | |
177 | n_ctrs++; | |
178 | } | |
179 | ||
180 | *end_ptr = fn_buffer; | |
181 | return &fn_buffer->next; | |
182 | ||
183 | fail: | |
d273c40a | 184 | gcov_error (GCOV_PROF_PREFIX "Function %u %s %u \n", filename, fn_ix, |
d6d3f033 RX |
185 | len ? "cannot allocate" : "counter mismatch", len ? len : ix); |
186 | ||
187 | return (struct gcov_fn_buffer **)free_fn_data (gi_ptr, fn_buffer, ix); | |
188 | } | |
189 | ||
be9d9fdb ML |
190 | /* Convert VERSION into a string description and return the it. |
191 | BUFFER is used for storage of the string. The code should be | |
192 | aligned wit gcov-iov.c. */ | |
193 | ||
194 | static char * | |
195 | gcov_version_string (char *buffer, char version[4]) | |
196 | { | |
197 | if (version[0] < 'A' || version[0] > 'Z' | |
198 | || version[1] < '0' || version[1] > '9' | |
199 | || version[2] < '0' || version[2] > '9') | |
200 | sprintf (buffer, "(unknown)"); | |
201 | else | |
202 | { | |
203 | unsigned major = 10 * (version[0] - 'A') + (version[1] - '0'); | |
204 | unsigned minor = version[2] - '0'; | |
205 | sprintf (buffer, "%u.%u (%s)", major, minor, | |
206 | version[3] == '*' ? "release" : "experimental"); | |
207 | } | |
208 | return buffer; | |
209 | } | |
210 | ||
d6d3f033 RX |
211 | /* Check if VERSION of the info block PTR matches libgcov one. |
212 | Return 1 on success, or zero in case of versions mismatch. | |
213 | If FILENAME is not NULL, its value used for reporting purposes | |
214 | instead of value from the info block. */ | |
215 | ||
216 | static int | |
217 | gcov_version (struct gcov_info *ptr, gcov_unsigned_t version, | |
218 | const char *filename) | |
219 | { | |
220 | if (version != GCOV_VERSION) | |
221 | { | |
222 | char v[4], e[4]; | |
e3a682f4 | 223 | char ver_string[128], expected_string[128]; |
d6d3f033 RX |
224 | |
225 | GCOV_UNSIGNED2STRING (v, version); | |
226 | GCOV_UNSIGNED2STRING (e, GCOV_VERSION); | |
227 | ||
d273c40a | 228 | gcov_error (GCOV_PROF_PREFIX "Version mismatch - expected %s (%.4s) " |
be9d9fdb ML |
229 | "got %s (%.4s)\n", |
230 | filename? filename : ptr->filename, | |
231 | gcov_version_string (expected_string, e), e, | |
e3a682f4 | 232 | gcov_version_string (ver_string, v), v); |
d6d3f033 RX |
233 | return 0; |
234 | } | |
235 | return 1; | |
236 | } | |
237 | ||
d6d3f033 RX |
238 | /* buffer for the fn_data from another program. */ |
239 | static struct gcov_fn_buffer *fn_buffer; | |
d6d3f033 | 240 | |
d6d3f033 RX |
241 | /* Including system dependent components. */ |
242 | #include "libgcov-driver-system.c" | |
243 | ||
244 | /* This function merges counters in GI_PTR to an existing gcda file. | |
245 | Return 0 on success. | |
246 | Return -1 on error. In this case, caller will goto read_fatal. */ | |
247 | ||
248 | static int | |
19926161 NS |
249 | merge_one_data (const char *filename, |
250 | struct gcov_info *gi_ptr, | |
512cc015 | 251 | struct gcov_summary *summary) |
d6d3f033 RX |
252 | { |
253 | gcov_unsigned_t tag, length; | |
254 | unsigned t_ix; | |
512cc015 | 255 | int f_ix = -1; |
d6d3f033 RX |
256 | int error = 0; |
257 | struct gcov_fn_buffer **fn_tail = &fn_buffer; | |
d6d3f033 RX |
258 | |
259 | length = gcov_read_unsigned (); | |
6dc33097 | 260 | if (!gcov_version (gi_ptr, length, filename)) |
d6d3f033 RX |
261 | return -1; |
262 | ||
72e0c742 ML |
263 | /* Skip timestamp. */ |
264 | gcov_read_unsigned (); | |
265 | ||
d6d3f033 | 266 | length = gcov_read_unsigned (); |
72e0c742 | 267 | if (length != gi_ptr->checksum) |
0e8f29da ML |
268 | { |
269 | /* Read from a different compilation. Overwrite the file. */ | |
d273c40a | 270 | gcov_error (GCOV_PROF_PREFIX "overwriting an existing profile data " |
72e0c742 | 271 | "with a different checksum\n", filename); |
0e8f29da ML |
272 | return 0; |
273 | } | |
d6d3f033 | 274 | |
512cc015 ML |
275 | tag = gcov_read_unsigned (); |
276 | if (tag != GCOV_TAG_OBJECT_SUMMARY) | |
277 | goto read_mismatch; | |
278 | length = gcov_read_unsigned (); | |
279 | gcc_assert (length > 0); | |
280 | gcov_read_summary (summary); | |
d6d3f033 | 281 | |
512cc015 | 282 | tag = gcov_read_unsigned (); |
d6d3f033 RX |
283 | /* Merge execution counts for each function. */ |
284 | for (f_ix = 0; (unsigned)f_ix != gi_ptr->n_functions; | |
285 | f_ix++, tag = gcov_read_unsigned ()) | |
286 | { | |
287 | const struct gcov_ctr_info *ci_ptr; | |
288 | const struct gcov_fn_info *gfi_ptr = gi_ptr->functions[f_ix]; | |
289 | ||
290 | if (tag != GCOV_TAG_FUNCTION) | |
291 | goto read_mismatch; | |
292 | ||
293 | length = gcov_read_unsigned (); | |
294 | if (!length) | |
295 | /* This function did not appear in the other program. | |
296 | We have nothing to merge. */ | |
297 | continue; | |
298 | ||
299 | if (length != GCOV_TAG_FUNCTION_LENGTH) | |
300 | goto read_mismatch; | |
301 | ||
302 | if (!gfi_ptr || gfi_ptr->key != gi_ptr) | |
303 | { | |
304 | /* This function appears in the other program. We | |
305 | need to buffer the information in order to write | |
306 | it back out -- we'll be inserting data before | |
307 | this point, so cannot simply keep the data in the | |
308 | file. */ | |
6dc33097 | 309 | fn_tail = buffer_fn_data (filename, gi_ptr, fn_tail, f_ix); |
d6d3f033 RX |
310 | if (!fn_tail) |
311 | goto read_mismatch; | |
312 | continue; | |
313 | } | |
314 | ||
315 | length = gcov_read_unsigned (); | |
316 | if (length != gfi_ptr->ident) | |
317 | goto read_mismatch; | |
318 | ||
319 | length = gcov_read_unsigned (); | |
320 | if (length != gfi_ptr->lineno_checksum) | |
321 | goto read_mismatch; | |
322 | ||
323 | length = gcov_read_unsigned (); | |
324 | if (length != gfi_ptr->cfg_checksum) | |
325 | goto read_mismatch; | |
326 | ||
327 | ci_ptr = gfi_ptr->ctrs; | |
328 | for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++) | |
329 | { | |
330 | gcov_merge_fn merge = gi_ptr->merge[t_ix]; | |
331 | ||
332 | if (!merge) | |
333 | continue; | |
334 | ||
871e5ada | 335 | tag = gcov_read_unsigned (); |
ece21ff6 ML |
336 | int read_length = (int)gcov_read_unsigned (); |
337 | length = abs (read_length); | |
871e5ada ML |
338 | if (tag != GCOV_TAG_FOR_COUNTER (t_ix) |
339 | || (length != GCOV_TAG_COUNTER_LENGTH (ci_ptr->num) | |
340 | && t_ix != GCOV_COUNTER_V_TOPN | |
341 | && t_ix != GCOV_COUNTER_V_INDIR)) | |
342 | goto read_mismatch; | |
ece21ff6 ML |
343 | /* Merging with all zero counters does not make sense. */ |
344 | if (read_length > 0) | |
345 | (*merge) (ci_ptr->values, ci_ptr->num); | |
871e5ada ML |
346 | ci_ptr++; |
347 | } | |
d6d3f033 | 348 | if ((error = gcov_is_error ())) |
871e5ada | 349 | goto read_error; |
d6d3f033 RX |
350 | } |
351 | ||
352 | if (tag) | |
353 | { | |
354 | read_mismatch:; | |
d273c40a | 355 | gcov_error (GCOV_PROF_PREFIX "Merge mismatch for %s %u\n", |
6dc33097 | 356 | filename, f_ix >= 0 ? "function" : "summary", |
d6d3f033 RX |
357 | f_ix < 0 ? -1 - f_ix : f_ix); |
358 | return -1; | |
359 | } | |
360 | return 0; | |
361 | ||
362 | read_error: | |
d273c40a | 363 | gcov_error (GCOV_PROF_PREFIX "%s merging\n", filename, |
d6d3f033 RX |
364 | error < 0 ? "Overflow": "Error"); |
365 | return -1; | |
366 | } | |
367 | ||
9124bbe1 SH |
368 | /* Write the DATA of LENGTH characters to the gcov file. */ |
369 | ||
370 | static void | |
371 | gcov_dump_handler (const void *data, | |
372 | unsigned length, | |
373 | void *arg ATTRIBUTE_UNUSED) | |
374 | { | |
375 | gcov_write (data, length); | |
376 | } | |
377 | ||
378 | /* Allocate SIZE characters and return the address of the allocated memory. */ | |
379 | ||
380 | static void * | |
381 | gcov_allocate_handler (unsigned size, void *arg ATTRIBUTE_UNUSED) | |
382 | { | |
383 | return xmalloc (size); | |
384 | } | |
385 | #endif /* NEED_L_GCOV */ | |
386 | ||
387 | #if defined(NEED_L_GCOV) || defined(NEED_L_GCOV_INFO_TO_GCDA) | |
388 | /* Dump the WORD using the DUMP handler called with ARG. */ | |
389 | ||
390 | static inline void | |
391 | dump_unsigned (gcov_unsigned_t word, | |
392 | void (*dump_fn) (const void *, unsigned, void *), | |
393 | void *arg) | |
394 | { | |
395 | (*dump_fn) (&word, sizeof (word), arg); | |
396 | } | |
397 | ||
398 | /* Dump the COUNTER using the DUMP handler called with ARG. */ | |
399 | ||
400 | static inline void | |
401 | dump_counter (gcov_type counter, | |
402 | void (*dump_fn) (const void *, unsigned, void *), | |
403 | void *arg) | |
404 | { | |
405 | dump_unsigned ((gcov_unsigned_t)counter, dump_fn, arg); | |
406 | ||
407 | if (sizeof (counter) > sizeof (gcov_unsigned_t)) | |
408 | dump_unsigned ((gcov_unsigned_t)(counter >> 32), dump_fn, arg); | |
409 | else | |
410 | dump_unsigned (0, dump_fn, arg); | |
411 | } | |
412 | ||
39d80300 SH |
413 | /* Dump the STRING using the DUMP handler called with ARG. */ |
414 | ||
415 | static inline void | |
28cfea98 | 416 | ATTRIBUTE_UNUSED |
39d80300 SH |
417 | dump_string (const char *string, |
418 | void (*dump_fn) (const void *, unsigned, void *), | |
419 | void *arg) | |
420 | { | |
421 | unsigned length = 0; | |
422 | ||
423 | if (string) | |
424 | length = strlen (string) + 1; | |
425 | ||
426 | dump_unsigned (length, dump_fn, arg); | |
427 | if (string) | |
428 | (*dump_fn) (string, length, arg); | |
429 | } | |
430 | ||
6a8fc0c3 ML |
431 | #define MAX(X,Y) ((X) > (Y) ? (X) : (Y)) |
432 | ||
871e5ada ML |
433 | /* Store all TOP N counters where each has a dynamic length. */ |
434 | ||
435 | static void | |
6a8fc0c3 ML |
436 | write_topn_counters (const struct gcov_ctr_info *ci_ptr, |
437 | unsigned t_ix, | |
9124bbe1 SH |
438 | gcov_unsigned_t n_counts, |
439 | void (*dump_fn) (const void *, unsigned, void *), | |
440 | void *(*allocate_fn)(unsigned, void *), | |
441 | void *arg) | |
871e5ada ML |
442 | { |
443 | unsigned counters = n_counts / GCOV_TOPN_MEM_COUNTERS; | |
444 | gcc_assert (n_counts % GCOV_TOPN_MEM_COUNTERS == 0); | |
6a8fc0c3 ML |
445 | |
446 | /* It can happen in a multi-threaded environment that number of counters is | |
447 | different from the size of the corresponding linked lists. */ | |
448 | #define LIST_SIZE_MIN_LENGTH 4 * 1024 | |
449 | ||
450 | static unsigned *list_sizes = NULL; | |
451 | static unsigned list_size_length = 0; | |
452 | ||
453 | if (list_sizes == NULL || counters > list_size_length) | |
454 | { | |
455 | list_size_length = MAX (LIST_SIZE_MIN_LENGTH, 2 * counters); | |
9124bbe1 | 456 | #if !defined(inhibit_libc) && HAVE_SYS_MMAN_H |
6a8fc0c3 ML |
457 | list_sizes |
458 | = (unsigned *)malloc_mmap (list_size_length * sizeof (unsigned)); | |
459 | #endif | |
460 | ||
461 | /* Malloc fallback. */ | |
462 | if (list_sizes == NULL) | |
9124bbe1 SH |
463 | list_sizes = |
464 | (unsigned *)(*allocate_fn) (list_size_length * sizeof (unsigned), | |
465 | arg); | |
6a8fc0c3 ML |
466 | } |
467 | ||
871e5ada | 468 | unsigned pair_total = 0; |
6a8fc0c3 | 469 | |
871e5ada | 470 | for (unsigned i = 0; i < counters; i++) |
6a8fc0c3 ML |
471 | { |
472 | gcov_type start = ci_ptr->values[GCOV_TOPN_MEM_COUNTERS * i + 2]; | |
9124bbe1 SH |
473 | unsigned sizes = 0; |
474 | ||
3c94db20 | 475 | for (struct gcov_kvp *node = (struct gcov_kvp *)(__INTPTR_TYPE__)start; |
6a8fc0c3 | 476 | node != NULL; node = node->next) |
9124bbe1 SH |
477 | ++sizes; |
478 | ||
479 | pair_total += sizes; | |
480 | list_sizes[i] = sizes; | |
6a8fc0c3 ML |
481 | } |
482 | ||
871e5ada | 483 | unsigned disk_size = GCOV_TOPN_DISK_COUNTERS * counters + 2 * pair_total; |
9124bbe1 SH |
484 | dump_unsigned (GCOV_TAG_FOR_COUNTER (t_ix), dump_fn, arg), |
485 | dump_unsigned (GCOV_TAG_COUNTER_LENGTH (disk_size), dump_fn, arg); | |
871e5ada ML |
486 | |
487 | for (unsigned i = 0; i < counters; i++) | |
488 | { | |
9124bbe1 SH |
489 | dump_counter (ci_ptr->values[GCOV_TOPN_MEM_COUNTERS * i], dump_fn, arg); |
490 | dump_counter (list_sizes[i], dump_fn, arg); | |
862b9b22 | 491 | gcov_type start = ci_ptr->values[GCOV_TOPN_MEM_COUNTERS * i + 2]; |
6a8fc0c3 ML |
492 | |
493 | unsigned j = 0; | |
3c94db20 | 494 | for (struct gcov_kvp *node = (struct gcov_kvp *)(__INTPTR_TYPE__)start; |
6a8fc0c3 | 495 | j < list_sizes[i]; node = node->next, j++) |
871e5ada | 496 | { |
9124bbe1 SH |
497 | dump_counter (node->value, dump_fn, arg); |
498 | dump_counter (node->count, dump_fn, arg); | |
871e5ada ML |
499 | } |
500 | } | |
501 | } | |
502 | ||
d6d3f033 RX |
503 | /* Write counters in GI_PTR and the summary in PRG to a gcda file. In |
504 | the case of appending to an existing file, SUMMARY_POS will be non-zero. | |
505 | We will write the file starting from SUMMAY_POS. */ | |
506 | ||
507 | static void | |
19926161 | 508 | write_one_data (const struct gcov_info *gi_ptr, |
9124bbe1 SH |
509 | const struct gcov_summary *prg_p ATTRIBUTE_UNUSED, |
510 | void (*dump_fn) (const void *, unsigned, void *), | |
511 | void *(*allocate_fn) (unsigned, void *), | |
512 | void *arg) | |
d6d3f033 RX |
513 | { |
514 | unsigned f_ix; | |
d6d3f033 | 515 | |
9124bbe1 SH |
516 | dump_unsigned (GCOV_DATA_MAGIC, dump_fn, arg); |
517 | dump_unsigned (GCOV_VERSION, dump_fn, arg); | |
518 | dump_unsigned (gi_ptr->stamp, dump_fn, arg); | |
72e0c742 | 519 | dump_unsigned (gi_ptr->checksum, dump_fn, arg); |
d6d3f033 | 520 | |
9124bbe1 | 521 | #ifdef NEED_L_GCOV |
d6d3f033 | 522 | /* Generate whole program statistics. */ |
a9c83fb7 | 523 | gcov_write_object_summary (prg_p); |
9124bbe1 | 524 | #endif |
d6d3f033 RX |
525 | |
526 | /* Write execution counts for each function. */ | |
527 | for (f_ix = 0; f_ix != gi_ptr->n_functions; f_ix++) | |
528 | { | |
9124bbe1 | 529 | #ifdef NEED_L_GCOV |
d6d3f033 | 530 | unsigned buffered = 0; |
9124bbe1 | 531 | #endif |
d6d3f033 RX |
532 | const struct gcov_fn_info *gfi_ptr; |
533 | const struct gcov_ctr_info *ci_ptr; | |
534 | gcov_unsigned_t length; | |
535 | unsigned t_ix; | |
536 | ||
9124bbe1 | 537 | #ifdef NEED_L_GCOV |
d6d3f033 RX |
538 | if (fn_buffer && fn_buffer->fn_ix == f_ix) |
539 | { | |
540 | /* Buffered data from another program. */ | |
541 | buffered = 1; | |
542 | gfi_ptr = &fn_buffer->info; | |
543 | length = GCOV_TAG_FUNCTION_LENGTH; | |
544 | } | |
545 | else | |
9124bbe1 | 546 | #endif |
d6d3f033 RX |
547 | { |
548 | gfi_ptr = gi_ptr->functions[f_ix]; | |
549 | if (gfi_ptr && gfi_ptr->key == gi_ptr) | |
550 | length = GCOV_TAG_FUNCTION_LENGTH; | |
551 | else | |
552 | length = 0; | |
553 | } | |
554 | ||
9124bbe1 SH |
555 | dump_unsigned (GCOV_TAG_FUNCTION, dump_fn, arg); |
556 | dump_unsigned (length, dump_fn, arg); | |
d6d3f033 RX |
557 | if (!length) |
558 | continue; | |
559 | ||
9124bbe1 SH |
560 | dump_unsigned (gfi_ptr->ident, dump_fn, arg); |
561 | dump_unsigned (gfi_ptr->lineno_checksum, dump_fn, arg); | |
562 | dump_unsigned (gfi_ptr->cfg_checksum, dump_fn, arg); | |
d6d3f033 RX |
563 | |
564 | ci_ptr = gfi_ptr->ctrs; | |
565 | for (t_ix = 0; t_ix < GCOV_COUNTERS; t_ix++) | |
566 | { | |
ece21ff6 | 567 | gcov_position_t n_counts; |
d6d3f033 | 568 | |
ece21ff6 ML |
569 | if (!gi_ptr->merge[t_ix]) |
570 | continue; | |
d6d3f033 | 571 | |
ece21ff6 | 572 | n_counts = ci_ptr->num; |
871e5ada | 573 | |
4ecf368f | 574 | if (t_ix == GCOV_COUNTER_V_TOPN || t_ix == GCOV_COUNTER_V_INDIR) |
9124bbe1 SH |
575 | write_topn_counters (ci_ptr, t_ix, n_counts, dump_fn, allocate_fn, |
576 | arg); | |
871e5ada ML |
577 | else |
578 | { | |
9124bbe1 SH |
579 | dump_unsigned (GCOV_TAG_FOR_COUNTER (t_ix), dump_fn, arg); |
580 | if (are_all_counters_zero (ci_ptr)) | |
581 | /* Do not stream when all counters are zero. */ | |
582 | dump_unsigned (GCOV_TAG_COUNTER_LENGTH (-n_counts), | |
583 | dump_fn, arg); | |
ece21ff6 ML |
584 | else |
585 | { | |
9124bbe1 SH |
586 | dump_unsigned (GCOV_TAG_COUNTER_LENGTH (n_counts), |
587 | dump_fn, arg); | |
ece21ff6 | 588 | for (unsigned i = 0; i < n_counts; i++) |
9124bbe1 | 589 | dump_counter (ci_ptr->values[i], dump_fn, arg); |
ece21ff6 | 590 | } |
871e5ada ML |
591 | } |
592 | ||
ece21ff6 ML |
593 | ci_ptr++; |
594 | } | |
9124bbe1 | 595 | #ifdef NEED_L_GCOV |
d6d3f033 RX |
596 | if (buffered) |
597 | fn_buffer = free_fn_data (gi_ptr, fn_buffer, GCOV_COUNTERS); | |
9124bbe1 | 598 | #endif |
d6d3f033 RX |
599 | } |
600 | ||
9124bbe1 | 601 | dump_unsigned (0, dump_fn, arg); |
d6d3f033 | 602 | } |
9124bbe1 | 603 | #endif /* NEED_L_GCOV || NEED_L_GCOV_INFO_TO_GCDA */ |
d6d3f033 | 604 | |
9124bbe1 | 605 | #ifdef NEED_L_GCOV |
d6d3f033 RX |
606 | /* Dump the coverage counts for one gcov_info object. We merge with existing |
607 | counts when possible, to avoid growing the .da files ad infinitum. We use | |
608 | this program's checksum to make sure we only accumulate whole program | |
609 | statistics to the correct summary. An object file might be embedded | |
610 | in two separate programs, and we must keep the two program | |
611 | summaries separate. */ | |
612 | ||
613 | static void | |
19926161 | 614 | dump_one_gcov (struct gcov_info *gi_ptr, struct gcov_filename *gf, |
88891c5f | 615 | unsigned run_counted ATTRIBUTE_UNUSED, |
1a6314b0 | 616 | gcov_type run_max ATTRIBUTE_UNUSED, int mode) |
d6d3f033 | 617 | { |
512cc015 | 618 | struct gcov_summary summary = {}; |
d6d3f033 RX |
619 | int error; |
620 | gcov_unsigned_t tag; | |
d6d3f033 | 621 | fn_buffer = 0; |
d6d3f033 | 622 | |
1a6314b0 | 623 | error = gcov_exit_open_gcda_file (gi_ptr, gf, mode); |
d6d3f033 RX |
624 | if (error == -1) |
625 | return; | |
626 | ||
627 | tag = gcov_read_unsigned (); | |
628 | if (tag) | |
629 | { | |
630 | /* Merge data from file. */ | |
631 | if (tag != GCOV_DATA_MAGIC) | |
632 | { | |
d273c40a ML |
633 | gcov_error (GCOV_PROF_PREFIX "Not a gcov data file\n", |
634 | gf->filename); | |
d6d3f033 RX |
635 | goto read_fatal; |
636 | } | |
512cc015 | 637 | error = merge_one_data (gf->filename, gi_ptr, &summary); |
d6d3f033 RX |
638 | if (error == -1) |
639 | goto read_fatal; | |
640 | } | |
641 | ||
642 | gcov_rewrite (); | |
643 | ||
88891c5f ML |
644 | #if !IN_GCOV_TOOL |
645 | if (!run_counted) | |
646 | { | |
647 | summary.runs++; | |
648 | summary.sum_max += run_max; | |
649 | } | |
650 | #else | |
651 | summary = gi_ptr->summary; | |
652 | #endif | |
d6d3f033 | 653 | |
9124bbe1 SH |
654 | write_one_data (gi_ptr, &summary, gcov_dump_handler, gcov_allocate_handler, |
655 | NULL); | |
d6d3f033 RX |
656 | /* fall through */ |
657 | ||
658 | read_fatal:; | |
659 | while (fn_buffer) | |
660 | fn_buffer = free_fn_data (gi_ptr, fn_buffer, GCOV_COUNTERS); | |
661 | ||
662 | if ((error = gcov_close ())) | |
23eb66d1 | 663 | gcov_error ((error < 0 ? GCOV_PROF_PREFIX "Overflow writing\n" |
664 | : GCOV_PROF_PREFIX "Error writing\n"), gf->filename); | |
d6d3f033 RX |
665 | } |
666 | ||
667 | ||
668 | /* Dump all the coverage counts for the program. It first computes program | |
669 | summary and then traverses gcov_list list and dumps the gcov_info | |
1a6314b0 | 670 | objects one by one. Use MODE to open files. */ |
d6d3f033 | 671 | |
4303c581 NS |
672 | #if !IN_GCOV_TOOL |
673 | static | |
674 | #endif | |
675 | void | |
1a6314b0 | 676 | gcov_do_dump (struct gcov_info *list, int run_counted, int mode) |
d6d3f033 RX |
677 | { |
678 | struct gcov_info *gi_ptr; | |
6dc33097 | 679 | struct gcov_filename gf; |
d6d3f033 | 680 | |
512cc015 ML |
681 | /* Compute run_max of this program run. */ |
682 | gcov_type run_max = 0; | |
683 | for (gi_ptr = list; gi_ptr; gi_ptr = gi_ptr->next) | |
684 | for (unsigned f_ix = 0; (unsigned)f_ix != gi_ptr->n_functions; f_ix++) | |
685 | { | |
686 | const struct gcov_ctr_info *cinfo | |
687 | = &gi_ptr->functions[f_ix]->ctrs[GCOV_COUNTER_ARCS]; | |
688 | ||
689 | for (unsigned i = 0; i < cinfo->num; i++) | |
690 | if (run_max < cinfo->values[i]) | |
691 | run_max = cinfo->values[i]; | |
692 | } | |
d6d3f033 RX |
693 | |
694 | allocate_filename_struct (&gf); | |
695 | ||
696 | /* Now merge each file. */ | |
19926161 | 697 | for (gi_ptr = list; gi_ptr; gi_ptr = gi_ptr->next) |
6c086e8c | 698 | { |
1a6314b0 | 699 | dump_one_gcov (gi_ptr, &gf, run_counted, run_max, mode); |
6c086e8c ML |
700 | free (gf.filename); |
701 | } | |
d6d3f033 | 702 | |
6c086e8c | 703 | free (gf.prefix); |
d6d3f033 RX |
704 | } |
705 | ||
63971184 ML |
706 | #if IN_GCOV_TOOL |
707 | const char * | |
708 | __attribute__ ((unused)) | |
709 | gcov_get_filename (struct gcov_info *list) | |
710 | { | |
711 | return list->filename; | |
712 | } | |
713 | #endif | |
714 | ||
b98a872b | 715 | #if !IN_GCOV_TOOL |
19926161 | 716 | void |
4303c581 | 717 | __gcov_dump_one (struct gcov_root *root) |
19926161 | 718 | { |
4303c581 | 719 | if (root->dumped) |
19926161 NS |
720 | return; |
721 | ||
1a6314b0 | 722 | gcov_do_dump (root->list, root->run_counted, 0); |
19926161 | 723 | |
4303c581 NS |
724 | root->dumped = 1; |
725 | root->run_counted = 1; | |
19926161 NS |
726 | } |
727 | ||
cadb2b96 | 728 | /* Per-dynamic-object gcov state. */ |
4303c581 | 729 | struct gcov_root __gcov_root; |
d6d3f033 | 730 | |
cadb2b96 NS |
731 | /* Exactly one of these will be live in the process image. */ |
732 | struct gcov_master __gcov_master = | |
733 | {GCOV_VERSION, 0}; | |
bc2b1a23 | 734 | |
00d79dc4 ML |
735 | /* Dynamic pool for gcov_kvp structures. */ |
736 | struct gcov_kvp *__gcov_kvp_dynamic_pool; | |
bc2b1a23 | 737 | |
00d79dc4 ML |
738 | /* Index into __gcov_kvp_dynamic_pool array. */ |
739 | unsigned __gcov_kvp_dynamic_pool_index; | |
740 | ||
741 | /* Size of _gcov_kvp_dynamic_pool array. */ | |
742 | unsigned __gcov_kvp_dynamic_pool_size; | |
cadb2b96 | 743 | |
8c9434c2 ML |
744 | void |
745 | __gcov_exit (void) | |
d6d3f033 | 746 | { |
4303c581 | 747 | __gcov_dump_one (&__gcov_root); |
cadb2b96 NS |
748 | if (__gcov_root.next) |
749 | __gcov_root.next->prev = __gcov_root.prev; | |
750 | if (__gcov_root.prev) | |
751 | __gcov_root.prev->next = __gcov_root.next; | |
752 | else | |
753 | __gcov_master.root = __gcov_root.next; | |
8aa5bdd6 AC |
754 | |
755 | gcov_error_exit (); | |
d6d3f033 RX |
756 | } |
757 | ||
758 | /* Add a new object file onto the bb chain. Invoked automatically | |
759 | when running an object file's global ctors. */ | |
760 | ||
761 | void | |
762 | __gcov_init (struct gcov_info *info) | |
763 | { | |
764 | if (!info->version || !info->n_functions) | |
765 | return; | |
766 | if (gcov_version (info, info->version, 0)) | |
767 | { | |
4303c581 | 768 | if (!__gcov_root.list) |
cadb2b96 NS |
769 | { |
770 | /* Add to master list and at exit function. */ | |
771 | if (gcov_version (NULL, __gcov_master.version, "<master>")) | |
772 | { | |
773 | __gcov_root.next = __gcov_master.root; | |
774 | if (__gcov_master.root) | |
775 | __gcov_master.root->prev = &__gcov_root; | |
776 | __gcov_master.root = &__gcov_root; | |
777 | } | |
cadb2b96 | 778 | } |
d6d3f033 | 779 | |
4303c581 NS |
780 | info->next = __gcov_root.list; |
781 | __gcov_root.list = info; | |
d6d3f033 | 782 | } |
d6d3f033 | 783 | } |
b98a872b | 784 | #endif /* !IN_GCOV_TOOL */ |
9124bbe1 SH |
785 | #endif /* NEED_L_GCOV */ |
786 | ||
787 | #ifdef NEED_L_GCOV_INFO_TO_GCDA | |
788 | /* Convert the gcov info to a gcda data stream. It is intended for | |
39d80300 | 789 | freestanding environments which do not support the C library file I/O. */ |
9124bbe1 SH |
790 | |
791 | void | |
792 | __gcov_info_to_gcda (const struct gcov_info *gi_ptr, | |
793 | void (*filename_fn) (const char *, void *), | |
794 | void (*dump_fn) (const void *, unsigned, void *), | |
795 | void *(*allocate_fn) (unsigned, void *), | |
796 | void *arg) | |
797 | { | |
798 | (*filename_fn) (gi_ptr->filename, arg); | |
799 | write_one_data (gi_ptr, NULL, dump_fn, allocate_fn, arg); | |
800 | } | |
39d80300 SH |
801 | |
802 | /* Convert the filename to a gcfn data stream. It is intended for | |
803 | freestanding environments which do not support the C library file I/O. */ | |
804 | ||
805 | void | |
806 | __gcov_filename_to_gcfn (const char *filename, | |
807 | void (*dump_fn) (const void *, unsigned, void *), | |
808 | void *arg) | |
809 | { | |
810 | dump_unsigned (GCOV_FILENAME_MAGIC, dump_fn, arg); | |
811 | dump_unsigned (GCOV_VERSION, dump_fn, arg); | |
812 | dump_string (filename, dump_fn, arg); | |
813 | } | |
9124bbe1 | 814 | #endif /* NEED_L_GCOV_INFO_TO_GCDA */ |